* [PATCH 6.12 000/337] 6.12.103-rc1 review
@ 2026-08-07 14:33 Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 002/337] um: Add os_set_pdeathsig helper function Greg Kroah-Hartman
` (343 more replies)
0 siblings, 344 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, linux-kernel, torvalds, akpm, linux,
shuah, patches, lkft-triage, pavel, jonathanh, f.fainelli,
sudipm.mukherjee, rwarsow, conor, hargar, broonie, achill, sr,
Ilya Maximets, Pablo Neira Ayuso, Sasha Levin
This is the start of the stable review cycle for the 6.12.103 release.
There are 337 patches in this series, all will be posted as a response
to this one. If anyone has any issues with these being applied, please
let me know.
Responses should be made by Sun, 09 Aug 2026 14:33:46 +0000.
Anything received after that time might be too late.
The whole patch series can be found in one patch at:
https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.12.103-rc1.gz
or in the git tree and branch at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.12.y
and the diffstat can be found below.
thanks,
greg k-h
-------------
Pseudo-Shortlog of commits:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 6.12.103-rc1
Thomas Zimmermann <tzimmermann@suse.de>
drm/tegra: fbdev: Do not assign to struct drm_fb_helper.info
Bart Van Assche <bvanassche@acm.org>
drm/fb-helper: Fix a locking bug in an error path
Andrei Kuchynski <akuchynski@chromium.org>
usb: typec: ucsi: Correct teardown ordering in ucsi_init() error path
Oliver Hartkopp <socketcan@hartkopp.net>
can: isotp: fix timer drain order, wakeup handling and tx_gen ordering
Oliver Hartkopp <socketcan@hartkopp.net>
can: use skb hash instead of private variable in headroom
David Howells <dhowells@redhat.com>
rxrpc: Fix irq-disabled in local_bh_enable()
David Howells <dhowells@redhat.com>
rxrpc: Manage RTT per-call rather than per-peer
David Howells <dhowells@redhat.com>
rxrpc: Fix the calculation and use of RTO
David Howells <dhowells@redhat.com>
rxrpc: Adjust the rxrpc_rtt_rx tracepoint
David Howells <dhowells@redhat.com>
rxrpc: Generate rtt_min
Zongyao Bai <zongyao.bai@intel.com>
drm/xe/pt: Reset current_op in xe_pt_update_ops_init()
Matthew Brost <matthew.brost@intel.com>
drm/xe: Stub out new pagefault layer
Jani Nikula <jani.nikula@intel.com>
drm/i915/hdcp: check streams[] bounds before overflow
Suraj Kandpal <suraj.kandpal@intel.com>
drm/i915/hdcp: Skip inactive MST connectors when building stream list
Jani Nikula <jani.nikula@intel.com>
drm/i915/hdcp: require monotonically increasing seq_num_v
Suraj Kandpal <suraj.kandpal@intel.com>
drm/i915/hdcp: Move to using intel_display in intel_hdcp
Nitin Gote <nitin.r.gote@intel.com>
drm/xe: Hold a dma-buf reference for imported BOs
Thomas Hellström <thomas.hellstrom@linux.intel.com>
drm/xe: Rename ___xe_bo_create_locked()
Jani Nikula <jani.nikula@intel.com>
drm/i915/vrr: require valid min/max vfreq for VRR
Ville Syrjälä <ville.syrjala@linux.intel.com>
drm/i915/vrr: Check HAS_VRR() first in intel_vrr_is_capable()
Matthew Brost <matthew.brost@intel.com>
drm/xe: Wait on external BO kernel fences in exec IOCTL
Thomas Hellström <thomas.hellstrom@linux.intel.com>
drm/exec: Remove the index parameter from drm_exec_for_each_locked_obj[_reverse]
Thomas Zimmermann <tzimmermann@suse.de>
drm/tegra: fbdev: Remove offset into framebuffer memory
Thomas Zimmermann <tzimmermann@suse.de>
drm/fb-helper: Allocate and release fb_info in single place
Asad Kamal <asad.kamal@amd.com>
drm/amdgpu/gfx: fix cleaner shader IB buffer overflow
Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
drm/amdgpu: give each kernel job a unique id
Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
drm/sched: Store the drm client_id in drm_sched_fence
Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
drm/amdgpu: Fix context pstate override handling
Timur Kristóf <timur.kristof@gmail.com>
drm/amdgpu: Respect placement requirements in amdgpu_gtt_mgr functions
Breno Leitao <leitao@debian.org>
mm/kmemleak: fix checksum computation for per-cpu objects
Catalin Marinas <catalin.marinas@arm.com>
kmemleak: iommu/iova: fix transient kmemleak false positive
Geliang Tang <geliang@kernel.org>
mptcp: pm: userspace: fix use-after-free in get_local_id
Geliang Tang <geliang@kernel.org>
mptcp: pm: use addr entry for get_local_id
Geliang Tang <geliang@kernel.org>
mptcp: add mptcp_userspace_pm_lookup_addr helper
Geliang Tang <geliang@kernel.org>
mptcp: pm: avoid code duplication to lookup endp
Kai Vehmanen <kai.vehmanen@linux.intel.com>
ALSA: hda: codecs: hdmi: disable keep-alive before audio format change
LiangCheng Wang <zaq14760@gmail.com>
wifi: brcmfmac: set F2 blocksize to 256 for BCM43752
Gokul Sivakumar <gokulkumar.sivakumar@infineon.com>
wifi: brcmfmac: fix 43752 SDIO FWVID incorrectly labelled as Cypress (CYW)
Daniel Hodges <git@danielhodges.dev>
wifi: ath6kl: fix use-after-free in aggr_reset_state()
Fan Wu <fanwu01@zju.edu.cn>
wifi: brcmfmac: drain bus_reset work on device removal
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
media: uapi: rkisp: Correct name version enum
Jackson Lee <jackson.lee@chipsnmedia.com>
media: chips-media: wave5: Support CBP profile
Sakari Ailus <sakari.ailus@linux.intel.com>
media: imx219: Fix maximum frame length in lines
Jai Luthra <jai.luthra@ideasonboard.com>
media: i2c: imx219: Rename VTS to FRM_LENGTH
Andrei Kuchynski <akuchynski@chromium.org>
usb: typec: ucsi: Fix race condition and ordering in port unregistration
Sergey Senozhatsky <senozhatsky@chromium.org>
usb: typec: ucsi: split connector lock classes
Cen Zhang <zzzccc427@gmail.com>
usb: gadget: f_tcm: synchronize delayed set_alt with teardown
Junjie Cao <junjie.cao@intel.com>
gpio: pch: use raw_spinlock_t for the register lock
Harry Yoo (Oracle) <harry@kernel.org>
mm/slab: prevent unbounded recursion in free path with new kmalloc type
Harry Yoo (Oracle) <harry@kernel.org>
lib/alloc_tag: introduce mem_alloc_profiling_permanently_disabled()
Kiryl Shutsemau (Meta) <kas@kernel.org>
mm/huge_memory: unlock i_mmap_rwsem before releasing after-split folios
Kiryl Shutsemau (Meta) <kas@kernel.org>
fs/proc/task_mmu: fix PAGEMAP_SCAN written state for unpopulated ptes
Kiryl Shutsemau (Meta) <kas@kernel.org>
mm/hugetlb: fix swap entry corruption when clearing uffd-wp at fork()
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/rtp: Ensure locking/ref counting for OA whitelists
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/oa: (De-)whitelist OA registers on OA stream open/release
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/rtp: (De-)whitelist OA registers for all hwe's for a gt
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/rtp: Toggle 'deny' bit to (de-)whitelist OA regs
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/rtp: Save OA nonpriv registers to register save/restore lists
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/rtp: Generalize whitelist_apply_to_hwe
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/rtp: Keep track of non-OA nonpriv slots
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/rtp: Maintain OA whitelists separately
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists
Lucas De Marchi <lucas.demarchi@intel.com>
drm/xe: Apply whitelist to engine save-restore
Michal Wajdeczko <michal.wajdeczko@intel.com>
drm/xe: Introduce xe_gt_dbg_printer()
Ashutosh Dixit <ashutosh.dixit@intel.com>
drm/xe/rtp: Refactor OAG MMIO trigger register whitelisting
Pauli Virtanen <pav@iki.fi>
Bluetooth: ISO: fix CONNECTED -> CLOSED transition on shutdown/release
Wandun Chen <chenwandun@lixiang.com>
of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails
Niklas Cassel <cassel@kernel.org>
ata: ahci: Make ahci_ignore_port() handle empty mask_port_map
Damien Le Moal <dlemoal@kernel.org>
ata: libahci_platform: Do not set mask_port_map when not needed
HyeongJun An <sammiee5311@gmail.com>
HID: logitech-dj: Fix maxfield check in DJ short report validation
Jun Guo <jun.guo@cixtech.com>
spi: spi-cadence: enable SPI_CONTROLLER_MUST_TX
Zack Rusin <zack.rusin@broadcom.com>
drm/vmwgfx: validate external BO copy bounds for both stride paths
Zack Rusin <zack.rusin@broadcom.com>
drm/vmwgfx: use check_add_overflow for shader size+offset bound
Zack Rusin <zack.rusin@broadcom.com>
drm/vmwgfx: avoid destroy_workqueue(NULL) on vkms init failure
Zack Rusin <zack.rusin@broadcom.com>
drm/vmwgfx: bound DMA command body size against suffix pointer
Zack Rusin <zack.rusin@broadcom.com>
drm/vmwgfx: validate DRAW_PRIMITIVES header size before division
Zack Rusin <zack.rusin@broadcom.com>
drm/vmwgfx: drop dma_buf reference on foreign-fd prime import
Zack Rusin <zack.rusin@broadcom.com>
drm/vmwgfx: reject DX_BIND_QUERY without a DX context
Zack Rusin <zack.rusin@broadcom.com>
drm/vmwgfx: fix guest_memory_dirty bitfield clobbered as size
William Palacek <William.Palacek@amd.com>
drm/amdkfd: hold event_mutex while checkpointing CRIU events
David Francis <David.Francis@amd.com>
drm/amdkfd: Handle invalid event type in CRIU event restore
William Palacek <William.Palacek@amd.com>
drm/amdkfd: fix uint32_t overflow in EOP ring buffer size alignment
Vladimir Marioukhine <Vladimir.Marioukhine@amd.com>
drm/amdkfd: fix QID bit leak in pqm_create_queue()
Gang Ba <Gang.Ba@amd.com>
drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE
Jiri Slaby (SUSE) <jirislaby@kernel.org>
drm/amd/display: use proper context for logging
Ray Wu <ray.wu@amd.com>
drm/amd/display: Increase HDMI AV mute wait from 2 to 3 frames
Harkirat Gill <harkirat.gill@amd.com>
drm/amdgpu: cap GTT size to physical RAM on APUs
Candice Li <candice.li@amd.com>
drm/amdgpu: restore UMD profile pstate after runtime resume
Myeonghun Pak <mhun512@gmail.com>
drm/mediatek: ovl_adaptor: balance component registrations
Osama Abdelkader <osama.abdelkader@gmail.com>
drm/panthor: validate firmware interface structure sizes
Osama Abdelkader <osama.abdelkader@gmail.com>
drm/panthor: reject firmware sections with oversized data
Maíra Canal <mcanal@igalia.com>
drm/vc4: Zero the tile state data array before each BIN job
Jose Maria Casanova Crespo <jmcasanova@igalia.com>
drm/vc4: Supply the overflow slot size in BPOS, not the whole bin BO size
Alexander Kaplan <alexander.kaplan@sms-medipool.de>
drm/dp: Read the PCON max FRL bandwidth only for HDMI DFPs
Avi Weiss <thnkslprpt@gmail.com>
can: ctucanfd: mark error-active controller status valid
Avi Weiss <thnkslprpt@gmail.com>
can: ctucanfd: handle bus error interrupts
Avi Weiss <thnkslprpt@gmail.com>
can: ctucanfd: unmap BAR0 using base address
Avi Weiss <thnkslprpt@gmail.com>
can: ctucanfd: use self-test mode for PRESUME_ACK
Pengpeng Hou <pengpeng@iscas.ac.cn>
can: ctucanfd: add missing MODULE_DEVICE_TABLE()
Pengpeng Hou <pengpeng@iscas.ac.cn>
can: peak_usb: validate uCAN receive record lengths
Maoyi Xie <maoyixie.tju@gmail.com>
can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error
James Gao <jamesgao5@outlook.com>
can: peak_usb: add bounds check for USB channel index
Pengpeng Hou <pengpeng@iscas.ac.cn>
can: softing: fw_parse(): validate firmware record spans
Pengpeng Hou <pengpeng@iscas.ac.cn>
can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents
Abdun Nihaal <nihaal@cse.iitm.ac.in>
can: kvaser_usb: kvaser_usb_hydra_get_busparams(): fix memory leak in kvaser_usb_hydra_get_busparams()
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
can: j1939: use netdevice_tracker for j1939_{priv,session,ecu} tracking
Oleksij Rempel <o.rempel@pengutronix.de>
can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer
Marc Kleine-Budde <mkl@pengutronix.de>
can: gs_usb: gs_usb_receive_bulk_callback(): resubmit URB on skb allocation failure
Guangshuo Li <lgs201920130244@gmail.com>
can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure
Pengpeng Hou <pengpeng@iscas.ac.cn>
can: ems_usb: validate CPC message lengths
Lucas Martins Alves <lucas.alves@lumal21.com.br>
can: c_can: c_can_chip_config(): keep controller in init mode until bittiming is configured
Liem <liem16213@gmail.com>
i2c: imx: Cancel hrtimer before clearing slave pointer
Liem <liem16213@gmail.com>
i2c: imx: Fix slave registration race and error handling
Jonas Gorski <jonas.gorski@bisdn.de>
i2c: iproc: reset bus after timeout if START_BUSY is stuck
H. Nikolaus Schaller <hns@goldelico.com>
i2c: jz4780: Cache host clock rate at probe to prevent CCF prepare_lock deadlock
Dawei Feng <dawei.feng@seu.edu.cn>
ice: fix memory leak in ice_lbtest_prepare_rings()
Aaron Ma <aaron.ma@canonical.com>
ice: wait for reset completion in ice_resume()
Ilya Maximets <i.maximets@ovn.org>
net: openvswitch: fix skb leak on flow key update failure during ct
Ilya Maximets <i.maximets@ovn.org>
net: openvswitch: fix skb leak on flow key update failure during recirculation
Ilya Maximets <i.maximets@ovn.org>
net: openvswitch: fix potential UAF on meter attach failure
Nava kishore Manne <nava.kishore.manne@amd.com>
phy: zynqmp: keep SERDES scrambler and 8b/10b enabled for USB
Nava kishore Manne <nava.kishore.manne@amd.com>
phy: zynqmp: use read-modify-write for SERDES scrambler bypass
Nava kishore Manne <nava.kishore.manne@amd.com>
phy: zynqmp: fix L0_TM_DISABLE_SCRAMBLE_ENCODER mask
Holger Dengler <dengler@linux.ibm.com>
s390/zcrypt: Validate length for CCA ECC private key requests
Holger Dengler <dengler@linux.ibm.com>
s390/zcrypt: Validate length for CCA AES cipher key requests
Harald Freudenberger <freude@linux.ibm.com>
s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs
Stefan Haberland <sth@linux.ibm.com>
s390/dasd: Fix undersized format-check buffer
Jan Höppner <hoeppner@linux.ibm.com>
s390/dasd: Fix potential NULL pointer dereference
Aswin Karuvally <aswin@linux.ibm.com>
s390/qeth: Check CAP_NET_ADMIN for private ioctls
Niklas Schnelle <schnelle@linux.ibm.com>
s390/pci: Fix s390_pci_mmio_write syscall error return without MIO
Jianing Li <m13940358460@163.com>
power: supply: max17040: handle missing status supplier
Xu Rao <raoxu@uniontech.com>
power: supply: bq25890: fix the -10 C NTC lookup entry
Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
cpufreq: schedutil: Publish util hooks only after all sg_cpu are initialized
Abdun Nihaal <nihaal@cse.iitm.ac.in>
cpufreq: powernow-k8: Fix possible memory leak in powernowk8_cpu_init()
bui duc phuc <phucduc.bui@gmail.com>
gpio: pca953x: fix cache_only and IRQ state on restore_context() failure
Myeonghun Pak <mhun512@gmail.com>
i2c: amd-mp2: Unregister callback on adapter add failure
Vincent Jardin <vjardin@free.fr>
hwmon: (pmbus/core) notify on the hwmon device, not the i2c client
Hongyan Xu <getshell@seu.edu.cn>
hwmon: (npcm750-pwm-fan): stop fan timer on device detach
Asim Viladi Oglu Manizada <manizada@pm.me>
sctp: prevent peer transport count overflow
Yuxiang Yang <yangyx22@mails.tsinghua.edu.cn>
sctp: reject stale cookies with mismatched verification tags
Ibrahim Hashimov <security@auditcode.ai>
scsi: scsi_debug: Fix REPORT ZONES alloc_len underflow OOB write
Chris Gellermann <christian.gellermann@codasip.com>
selftests/clone3: fix wild pointer access of getline due to missing init
Chris Gellermann <christian.gellermann@codasip.com>
selftests/mm: fix potential wild pointer access of getline due to missing init
Vijaya Krishna Nivarthi <vijaya.nivarthi@oss.qualcomm.com>
spi: qcom-qspi: Correct max DMA length to avoid 64K boundary failure
Masami Hiramatsu (Google) <mhiramat@kernel.org>
tracing/filters: Fix false positive match in regex_match_full()
Masami Hiramatsu (Google) <mhiramat@kernel.org>
tracing: Check return value of __register_event() in trace_module_add_events()
Ming Lei <tom.leiming@gmail.com>
ublk: reset kernel-owned dev_info fields in ublk_ctrl_add_dev()
Eric Dumazet <edumazet@google.com>
vxlan: use pskb_network_may_pull() in route_shortcircuit()
Eric Dumazet <edumazet@google.com>
vxlan: use neigh_ha_snapshot() in route_shortcircuit()
Eric Dumazet <edumazet@google.com>
vxlan: unclone skb head before modifying eth header in route_shortcircuit()
Eric Dumazet <edumazet@google.com>
vxlan: re-fetch eth header after route_shortcircuit()
Matt Fleming <mfleming@cloudflare.com>
veth: convert frag_list skbs before running XDP
Michael Bommarito <michael.bommarito@gmail.com>
um: vector: fix use-after-free in vector_mmsg_rx()
Thorsten Blum <thorsten.blum@linux.dev>
powerpc/ps3: Fix map failure path in dma_ioc0_map_pages()
Zhiling Zou <zhilinz@nebusec.ai>
net: ipv6: clear suppressed fib6 rule result
Zhiling Zou <zhilinz@nebusec.ai>
net: bridge: stop fast-leave after deleting a port group
Breno Leitao <leitao@debian.org>
mm: memcg: initialize *locked in memcg1_oom_prepare() stub
Link Lin <linkl@google.com>
mm/page_reporting: use system_freezable_wq to fix UAF during suspend
Christian Brauner <brauner@kernel.org>
binfmt_misc: don't let an 'F' entry pin its own instance
Christian Brauner <brauner@kernel.org>
binfmt_misc: reject a flag character as the field delimiter
Zhao Li <enderaoelyther@gmail.com>
wifi: mwifiex: use the subframe length when parsing A-MSDU TDLS frames
Zihan Xi <zihanx@nebusec.ai>
tipc: avoid use-after-free in poll trace queue dumps
David Lee <david.lee@trailofbits.com>
netfilter: ipset: do not update comments from kernel-side hash adds
Xuanqiang Luo <luoxuanqiang@kylinos.cn>
net/smc: fix socket use-after-free during link group termination
Zhiling Zou <roxy520tt@gmail.com>
ipvs: do not propagate one-packet flag to synced conns
Matt Vollrath <tactii@gmail.com>
igbvf: Fix leak in TX DMA error cleanup
Dawei Feng <dawei.feng@seu.edu.cn>
e1000: fix memory leak in e1000_probe()
Md Sadre Alam <md.alam@oss.qualcomm.com>
dmaengine: qcom: bam_dma: Fix command element mask field for BAM v1.6.0+
Sonali Pradhan <sonalipradhan@google.com>
ALSA: usb-audio: Clamp frame size in implicit-feedback mode
Sonali Pradhan <sonalipradhan@google.com>
ALSA: usb-audio: Fix DMA buffer out-of-bounds write when fill_max is set
Baul Lee <baul.lee@xbow.com>
ALSA: usb-audio: fix OOB write in snd_usbmidi_akai_output()
Baul Lee <baul.lee@xbow.com>
ALSA: usb-audio: fix stack info leak in RME Digiface status
Baul Lee <baul.lee@xbow.com>
ALSA: usb-audio: fix use-after-free in ump_to_endpoint()
Niklas Cassel <cassel@kernel.org>
ata: libata-sata: fix ata_scsi_lpm_supported() iteration
Matt Vollrath <tactii@gmail.com>
ata: libata-eh: Increase STANDBY IMMEDIATE timeout
Haidar Lee <haidar.lee@adlinktech.com>
ASoC: tas2562: fix broken entries in the volume lookup table
Haidar Lee <haidar.lee@adlinktech.com>
ASoC: tas2562: fix DVC coefficient write order
Baul Lee <baul.lee@xbow.com>
ALSA: ump: fix double free of out_cvts on rawmidi error
Norbert Szetei <norbert@doyensec.com>
ALSA: timer: Clear SNDRV_TIMER_IFLG_DEAD once the close completes
Norbert Szetei <norbert@doyensec.com>
ALSA: seq: Fix division by zero in initialize_timer()
Norbert Szetei <norbert@doyensec.com>
ALSA: pcm: wake linked drain waiters on unlink
Xu Rao <raoxu@uniontech.com>
ALSA: lx6464es: fix period byte count for 16-bit streams
Takashi Iwai <tiwai@suse.de>
ALSA: 6fire: Fix UAF at error handling during probe
Xuanqiang Luo <luoxuanqiang@kylinos.cn>
bpf: lwt: Fix dst reference leak on reroute failure
Sangho Lee <kudo3228@gmail.com>
Bluetooth: HIDP: validate numbered report payloads
Sangho Lee <kudo3228@gmail.com>
Bluetooth: HIDP: reject frames without a transaction header
Chengfeng Ye <nicoyip.dev@gmail.com>
Bluetooth: hci_sync: Fix advertising data UAFs
Zihan Xi <xizh2024@lzu.edu.cn>
Bluetooth: mgmt: fix UAF in pair command cancellation
Zihan Xi <zihanx@nebusec.ai>
Bluetooth: mgmt: fix pending command UAF in EIR updates
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bluetooth: btmtk: Fix short read errors in btmtk_usb_uhw_reg_read()
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bluetooth: btusb: Fix short read errors in btusb_qca_send_vendor_req()
Luxiao Xu <rakukuip@gmail.com>
audit: fix potential use-after-free in audit_del_rule()
Zhan Xusheng <zhanxusheng1024@gmail.com>
audit: fix potential integer overflow in audit_log_n_string()
Charles Vosburgh <trilobyte777@gmail.com>
sctp: validate Adaptation Indication parameter length
Farhan Ali <alifm@linux.ibm.com>
KVM: s390: pci: Validate AIBV and AISB before pinning guest pages
Farhan Ali <alifm@linux.ibm.com>
KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
Farhan Ali <alifm@linux.ibm.com>
KVM: s390: pci: Reject adapter interrupt forwarding if already enabled
Sean Christopherson <seanjc@google.com>
KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active
Raushan Patel <raushan.jhon@gmail.com>
tracing/probes: Reject $arg0 in meta argument expansion
Gregory Price <gourry@gourry.net>
mm/vmstat: fold stranded per-cpu node stats when a node comes online
Xiangfeng Cai <caixiangfeng@bytedance.com>
mm/hugetlb: fix list corruption in allocate_file_region_entries()
Zi Yan <ziy@nvidia.com>
mm/percpu-km: fix bitmap overflow and accounting in pcpu_create_chunk()
Kiryl Shutsemau (Meta) <kas@kernel.org>
fs/proc/task_mmu: fix PAGEMAP_SCAN written state for PMD holes
Kefeng Wang <wangkefeng.wang@huawei.com>
mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE
Nathan Chancellor <nathan@kernel.org>
fortify: Disable -Wstringop-overread in tests
Benjamin Boortz <bennib@mailbox.org>
pinctrl: bm1880: add missing select GENERIC_PINCONF
Michael Bommarito <michael.bommarito@gmail.com>
erofs: cap LZMA stream pool size
Karl Mehltretter <kmehltretter@gmail.com>
pinctrl: devicetree: don't free uninitialized dev_name on error path
Benjamin Boortz <bennib@mailbox.org>
pinctrl: microchip-sgpio: add missing select REGMAP_MMIO
Cen Zhang (Microsoft) <blbllhy@gmail.com>
rhashtable: clear stale iter->p on table restart
Namjae Jeon <linkinjeon@kernel.org>
ksmbd: fix use-after-free in __close_file_table_ids()
Namjae Jeon <linkinjeon@kernel.org>
ksmbd: return success for deferred final close
Denis V. Lunev <den@openvz.org>
qede: sync udp_tunnel ports outside qede_lock in the recovery path
Gabriele Monaco <gmonaco@redhat.com>
sched/deadline: Use revised wakeup rule only for running dl_server
Suman Ghosh <sumang@marvell.com>
octeontx2-pf: Set correct sequence for carrier off and tx queue stop
Jiawen Wu <jiawenwu@trustnetic.com>
net: libwx: fix FDIR ATR queue mismatch for software VLAN packets
Daniel Golle <daniel@makrotopia.org>
net: dsa: mt7530: error out on failed reads in MT7531 PHY polling
Daniel Golle <daniel@makrotopia.org>
net: dsa: mt7530: check bus->read() errors in the MDIO regmap backend
Karl Mehltretter <kmehltretter@gmail.com>
riscv: mm: Fix out-of-bounds page-table walk during memory hot-remove
Muhammad Bilal <meatuni001@gmail.com>
accel/qaic: use sizeof(*trans_hdr) for transaction length check
Masami Hiramatsu (Google) <mhiramat@kernel.org>
tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions
Zheng Yejian <zhengyejian@huaweicloud.com>
tracing: Remove TRACE_EVENT_FL_FILTERED logic
Masami Hiramatsu (Google) <mhiramat@kernel.org>
tracing/mmiotrace: Reset dropped_count in mmio_reset_data()
Minhong He <heminhong@kylinos.cn>
can: isotp: check register_netdevice_notifier() error in module init
Chenguang Zhao <zhaochenguang@kylinos.cn>
net: sxgbe: check descriptor ring allocation failures
Chenguang Zhao <zhaochenguang@kylinos.cn>
net: sxgbe: free TX rings on RX allocation failure
Leon Romanovsky <leon@kernel.org>
scsi: target: Clear cmd_cnt when initial counter enrollment fails
Benjamin Block <bblock@linux.ibm.com>
scsi: zfcp: Fix memory leak during adapter release by destroying gid_pn_req
Guangshuo Li <lgs201920130244@gmail.com>
scsi: ufs: core: Cancel RTC work in active-active suspend
TanZheng <tanzheng@kylinos.cn>
scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE
Christian Marangi <ansuelsmth@gmail.com>
net: phylink: put link_gpio if phylink_create fails
Pauli Virtanen <pav@iki.fi>
Bluetooth: hci_sync: remove unnecessary hci_conn_get in create_conn_sync
Pauli Virtanen <pav@iki.fi>
Bluetooth: hci_sync: fix hci_conn_del() use in hci_le_create_conn_sync
Pauli Virtanen <pav@iki.fi>
Bluetooth: hci_conn: hold conn reference in abort_conn_sync()
Pauli Virtanen <pav@iki.fi>
Bluetooth: hci_sync: make hci_cmd_sync_run_once return -EEXIST if exists
Zijun Hu <zijun.hu@oss.qualcomm.com>
Bluetooth: btintel: Validate length before parsing diagnostics TLV
Pauli Virtanen <pav@iki.fi>
Bluetooth: ISO: avoid deadlocks in iso_sock_timeout
Pauli Virtanen <pav@iki.fi>
Bluetooth: ISO: fix leaking sk after socket release
Pauli Virtanen <pav@iki.fi>
Bluetooth: ISO: validate sockaddr_iso first in iso_sock_rebind_bis()
Pauli Virtanen <pav@iki.fi>
Bluetooth: ISO: fix timeout vs sync_timeout typo in check_bcast_qos
Jiale Yao <yaojiale02@163.com>
Bluetooth: L2CAP: fix UAF in l2cap_le_connect_rsp
Pauli Virtanen <pav@iki.fi>
Bluetooth: ISO: clear iso_data always when detaching conn from hcon
Yuho Choi <dbgh9129@gmail.com>
idpf: Fix mailbox IRQ name leak on request failure
Joshua Hay <joshua.a.hay@intel.com>
idpf: adjust TxQ ring count minimum
Guenter Roeck <linux@roeck-us.net>
hwmon: (pmbus) Fix return value from pmbus_update_byte_data()
Chenguang Zhao <zhaochenguang@kylinos.cn>
net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller
Frank Wunderlich <frank-w@public-files.de>
net: ethernet: mtk_eth_soc: add consts for irq index
Frank Wunderlich <frank-w@public-files.de>
net: ethernet: mtk_eth_soc: support named IRQs
Zhao Li <enderaoelyther@gmail.com>
wifi: mac80211: validate individual TWT params before driver setup
Eric Dumazet <edumazet@google.com>
net: udp_tunnel: fix memory leak in udp_tunnel_nic_unregister()
Thorsten Blum <thorsten.blum@linux.dev>
powerpc/boot: Fix treeboot-akebono CPU node lookup check
Thorsten Blum <thorsten.blum@linux.dev>
powerpc/boot: Fix treeboot-currituck CPU node lookup check
Thorsten Blum <thorsten.blum@linux.dev>
powerpc/boot: Fix simpleboot CPU node lookup check
Yun Lu <luyun@kylinos.cn>
rtase: fix double free of multi-frag skb on DMA map failure
Luiz Angelo Daros de Luca <luizluca@gmail.com>
hwmon: (adt7470) Fix PWM auto temp state array and bounds check
Luiz Angelo Daros de Luca <luizluca@gmail.com>
hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
Luiz Angelo Daros de Luca <luizluca@gmail.com>
hwmon: (adt7470) Use cached PWM frequency value
Luiz Angelo Daros de Luca <luizluca@gmail.com>
hwmon: (adt7470) Fix swapped PWM3 and PWM4 auto mode masks
Luiz Angelo Daros de Luca <luizluca@gmail.com>
hwmon: (adt7470) Fix temperature alarm logic in hwmon_temp_read()
Luiz Angelo Daros de Luca <luizluca@gmail.com>
hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread
Luiz Angelo Daros de Luca <luizluca@gmail.com>
hwmon: (adt7470) Fix cache updated before hardware write on I2C error
Luiz Angelo Daros de Luca <luizluca@gmail.com>
hwmon: (adt7470) Fix fans stuck in manual mode on I2C errors
Chenguang Zhao <zhaochenguang@kylinos.cn>
forcedeth: fix UAF of txrx_stats in nv_remove
David Corvaglia <david@corvaglia.dev>
net: bridge: mrp: fix Option TLV length in MRP_Test frames
Guenter Roeck <linux@roeck-us.net>
hwmon: (nct6775-core) Prevent access to unsupported weight registers
Eric Dumazet <edumazet@google.com>
net: do not send ICMP/NDISC Redirects when peer allocation fails
Guenter Roeck <linux@roeck-us.net>
hwmon: (nzxt-smart2) DMA-align output buffer
Guenter Roeck <linux@roeck-us.net>
hwmon: (lm90) Only report alarms if driver is ready
Guenter Roeck <linux@roeck-us.net>
hwmon: (sht3x) Fix unaligned accesses
Guenter Roeck <linux@roeck-us.net>
hwmon: (ltc4282) Fix reading the minimum alarm voltage
Guenter Roeck <linux@roeck-us.net>
hwmon: (ina2xx) Fix various overflow issues
Jonas Rebmann <jre@pengutronix.de>
hwmon: (ina2xx) Shift INA234 shunt and current registers
Ian Ray <ian.ray@gehealthcare.com>
hwmon: (ina2xx) Add support for INA234
Ian Ray <ian.ray@gehealthcare.com>
hwmon: (ina2xx) Make it easier to add more devices
Wenliang Yan <wenliang202407@163.com>
hwmon: (ina226) Add support for SY24655
Guenter Roeck <linux@roeck-us.net>
hwmon: (ina2xx) Add support for INA260
Guenter Roeck <linux@roeck-us.net>
hwmon: (ina2xx) Add support for has_alerts configuration flag
Guenter Roeck <linux@roeck-us.net>
hwmon: (nct6775-core) Fix number of temperature registers for NCT6116
Srikanth Boyapally <srikanth.boyapally@amd.com>
spi: spi-cadence: Move TX FIFO full busy-wait into FIFO
Jun Guo <jun.guo@cixtech.com>
spi: spi-cadence: supports transmission with bits_per_word of 16 and 32
Dawei Feng <dawei.feng@seu.edu.cn>
smb: client: fix buffer leaks in SMB1 read and write
Xingui Yang <yangxingui@huawei.com>
scsi: libsas: Fix HA resume deadlock and hisi_sas disk-wake race
HyeongJun An <sammiee5311@gmail.com>
scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer
HyeongJun An <sammiee5311@gmail.com>
scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer
Mario Limonciello <mario.limonciello@amd.com>
pinctrl-amd: Don't clear S4 wake bits at probe
Xiang Mei <xmei5@asu.edu>
rds: tcp: hold the RCU lock across ipv6_chk_addr() in rds_tcp_laddr_check()
Ilia Gavrilov <Ilia.Gavrilov@infotecs.ru>
rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled
Xiang Mei (Microsoft) <xmei5@asu.edu>
netfilter: nft_payload: fix mask build for partial field offload
Julian Anastasov <ja@ssi.bg>
ipvs: do not mangle ICMP replies for non-first fragments
Julian Anastasov <ja@ssi.bg>
ipvs: fix places with wrong packet offsets
Julian Anastasov <ja@ssi.bg>
ipvs: fix the checksum validations
Pablo Neira Ayuso <pablo@netfilter.org>
netfilter: xt_hashlimit: validate hashtable supports XT_HASHLIMIT_RATE_MATCH
Pablo Neira Ayuso <pablo@netfilter.org>
netfilter: nf_tables: make nft_object rhltable per table
Michael Bommarito <michael.bommarito@gmail.com>
assoc_array: trim the final shortcut word using the current chunk end
Michael Bommarito <michael.bommarito@gmail.com>
keys: make keyring key-chunk byte order agree with keyring_diff_objects()
Michael Bommarito <michael.bommarito@gmail.com>
keys: fix out-of-bounds read in keyring_get_key_chunk()
Fabrice Derepas <fabrice.derepas@canonical.com>
KEYS: trusted: dcp: fix key_len validation and calc_blob_len() return type
Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Drivers: hv: vmbus: Replace lockdep_hardirq_threaded() with lockdep annotation
Ruoyu Wang <ruoyuw560@gmail.com>
drm/mediatek: Check CRTC state before freeing
Xiang Mei <xmei5@asu.edu>
netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp()
Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
phy: zynqmp: fix runtime PM leak on probe allocation failure
Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
phy: zynqmp: fix clock error handling in xpsgtr_phy_init()
Mike Looijmans <mike.looijmans@topic.nl>
phy-zynqmp: Postpone getting clock rate until actually needed
Johannes Thumshirn <johannes.thumshirn@wdc.com>
btrfs: zoned: fix deadlock between metadata writeback and transaction commit
Qu Wenruo <wqu@suse.com>
btrfs: fix leaking BTRFS_FS_STATE_REMOUNTING flag
Sang-Heon Jeon <ekffu200098@gmail.com>
of: reserved_mem: prevent OOB when too many dynamic regions are defined
Oreoluwa Babatunde <quic_obabatun@quicinc.com>
of: reserved_mem: Add code to dynamically allocate reserved_mem array
Uday Khare <udaykhare77@gmail.com>
ASoC: max98090: fix missing IS_ERR() before PTR_ERR() on mclk lookup
Uday Khare <udaykhare77@gmail.com>
ASoC: max98095: fix missing IS_ERR() before PTR_ERR() on mclk lookup
Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
ata: ahci_ceva: fix error paths in ceva_ahci_platform_enable_resources()
Damien Le Moal <dlemoal@kernel.org>
ahci: Introduce ahci_ignore_port() helper
Josua Mayer <josua@solid-run.com>
ata: libahci_platform: support non-consecutive port numbers
Rosen Penev <rosenp@gmail.com>
ata: sata_mv: accept 1 or 2 resources in platform probe
Abdun Nihaal <nihaal@cse.iitm.ac.in>
gpio: sloppy-logic-analyzer: Fix memory leak in gpio_la_poll_probe()
Yuho Choi <dbgh9129@gmail.com>
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open()
Hongling Zeng <zenghongling@kylinos.cn>
dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
pinctrl: qcom: sc8280xp: Add missing wakeup entries for GPIO143/151
Sneh Mankad <sneh.mankad@oss.qualcomm.com>
pinctrl: qcom: Unconditionally mark gpio as wakeup enable
Michael Bommarito <michael.bommarito@gmail.com>
thunderbolt: Prevent XDomain delayed work use-after-free on disconnect
Jakub Kicinski <kuba@kernel.org>
netconsole: avoid OOB reads, msg is not nul-terminated
Tristan Madani <tristan@talencesecurity.com>
bpf: Reset register bounds before narrowing retval range in check_mem_access()
Benjamin Tissoires <bentiss@kernel.org>
HID: logitech-dj: fix wrong detection of bad DJ_SHORT output report
Lee Jones <lee@kernel.org>
HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write
Lee Jones <lee@kernel.org>
HID: logitech-dj: Standardise hid_report_enum variable nomenclature
Yehyeong Lee <yhlee@isslab.korea.ac.kr>
net: mpls: initialize rtm_tos in mpls_getroute()
Wayen.Yan <win847@gmail.com>
net: airoha: Fix register index for Tx-fwd counter configuration
Lorenzo Bianconi <lorenzo@kernel.org>
netfilter: br_netfilter: Reallocate headroom if necessary in neigh_hh_bridge()
Tiwei Bie <tiwei.btw@antgroup.com>
um: Preserve errno within signal handler
Shuvam Pandey <shuvampandey1@gmail.com>
kunit: tool: skip stty when stdin is not a tty
David Gow <david@davidgow.net>
kunit: tool: Terminate kernel under test on SIGINT
Benjamin Berg <benjamin.berg@intel.com>
um: Set parent death signal for userspace process
Tiwei Bie <tiwei.btw@antgroup.com>
um: Set parent-death signal for write_sigio thread/process
Tiwei Bie <tiwei.btw@antgroup.com>
um: Set parent-death signal for ubd io thread/process
Tiwei Bie <tiwei.btw@antgroup.com>
um: Use os_set_pdeathsig helper in winch thread/process
Benjamin Berg <benjamin.berg@intel.com>
um: Set parent death signal for winch thread/process
Tiwei Bie <tiwei.btw@antgroup.com>
um: Add os_set_pdeathsig helper function
Pablo Neira Ayuso <pablo@netfilter.org>
netfilter: nf_conntrack_expect: restore helper propagation via expectation
-------------
Diffstat:
Documentation/dev-tools/kmemleak.rst | 1 +
Documentation/hwmon/ina2xx.rst | 67 +-
Makefile | 4 +-
arch/powerpc/boot/simpleboot.c | 2 +-
arch/powerpc/boot/treeboot-akebono.c | 2 +-
arch/powerpc/boot/treeboot-currituck.c | 2 +-
arch/powerpc/platforms/ps3/mm.c | 1 +
arch/riscv/mm/init.c | 4 +-
arch/s390/kvm/pci.c | 28 +-
arch/s390/pci/pci_mmio.c | 1 +
arch/um/drivers/chan_user.c | 2 +
arch/um/drivers/ubd_kern.c | 1 +
arch/um/drivers/vector_kern.c | 3 +
arch/um/include/shared/os.h | 2 +
arch/um/os-Linux/process.c | 6 +
arch/um/os-Linux/sigio.c | 1 +
arch/um/os-Linux/signal.c | 3 +
arch/um/os-Linux/skas/process.c | 3 +
arch/x86/kvm/svm/avic.c | 8 -
drivers/accel/qaic/qaic_control.c | 2 +-
drivers/ata/ahci.h | 17 +-
drivers/ata/ahci_brcm.c | 3 +
drivers/ata/ahci_ceva.c | 24 +-
drivers/ata/libahci.c | 1 +
drivers/ata/libahci_platform.c | 38 +-
drivers/ata/libata-eh.c | 8 +
drivers/ata/libata-sata.c | 2 +-
drivers/ata/sata_mv.c | 2 +-
drivers/block/ublk_drv.c | 9 +
drivers/bluetooth/btintel.c | 3 +
drivers/bluetooth/btmtk.c | 50 +-
drivers/bluetooth/btusb.c | 30 +-
drivers/cpufreq/powernow-k8.c | 1 +
drivers/dma/idxd/cdev.c | 4 +-
drivers/dma/sun6i-dma.c | 11 +-
drivers/gpio/gpio-pca953x.c | 15 +-
drivers/gpio/gpio-pch.c | 28 +-
drivers/gpio/gpio-sloppy-logic-analyzer.c | 10 +
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 12 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 73 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 15 +
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 11 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 30 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 11 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_job.h | 22 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c | 3 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 3 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 40 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 3 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 3 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c | 5 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 8 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c | 4 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c | 4 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | 12 +-
drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 6 +-
drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c | 6 +-
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 10 +-
drivers/gpu/drm/amd/amdkfd/kfd_events.c | 23 +-
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 3 +-
.../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_queue.c | 2 +-
.../gpu/drm/amd/display/dc/dce/dce_clock_source.c | 20 +-
.../drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c | 16 +-
drivers/gpu/drm/armada/armada_fbdev.c | 12 +-
drivers/gpu/drm/display/drm_dp_helper.c | 12 +
drivers/gpu/drm/drm_exec.c | 6 +-
drivers/gpu/drm/drm_fb_helper.c | 41 +-
drivers/gpu/drm/drm_fbdev_dma.c | 12 +-
drivers/gpu/drm/drm_fbdev_shmem.c | 12 +-
drivers/gpu/drm/drm_fbdev_ttm.c | 12 +-
drivers/gpu/drm/drm_gpuvm.c | 3 +-
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 2 +-
drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 9 +-
drivers/gpu/drm/gma500/fbdev.c | 13 +-
drivers/gpu/drm/i915/display/intel_fbdev.c | 9 +-
drivers/gpu/drm/i915/display/intel_hdcp.c | 699 +++++++++++----------
drivers/gpu/drm/i915/display/intel_hdcp_gsc.c | 9 +-
drivers/gpu/drm/i915/display/intel_hdcp_gsc.h | 5 +-
.../gpu/drm/i915/display/intel_hdcp_gsc_message.h | 3 +-
drivers/gpu/drm/i915/display/intel_vrr.c | 10 +-
drivers/gpu/drm/imagination/pvr_job.c | 2 +-
drivers/gpu/drm/imagination/pvr_queue.c | 5 +-
drivers/gpu/drm/imagination/pvr_queue.h | 2 +-
drivers/gpu/drm/lima/lima_gem.c | 2 +-
drivers/gpu/drm/lima/lima_sched.c | 6 +-
drivers/gpu/drm/lima/lima_sched.h | 3 +-
drivers/gpu/drm/mediatek/mtk_crtc.c | 6 +-
drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 7 +-
drivers/gpu/drm/msm/msm_fbdev.c | 9 +-
drivers/gpu/drm/msm/msm_gem_submit.c | 8 +-
drivers/gpu/drm/nouveau/nouveau_sched.c | 3 +-
drivers/gpu/drm/omapdrm/omap_fbdev.c | 9 +-
drivers/gpu/drm/panfrost/panfrost_drv.c | 2 +-
drivers/gpu/drm/panthor/panthor_drv.c | 3 +-
drivers/gpu/drm/panthor/panthor_fw.c | 47 +-
drivers/gpu/drm/panthor/panthor_mmu.c | 2 +-
drivers/gpu/drm/panthor/panthor_sched.c | 5 +-
drivers/gpu/drm/panthor/panthor_sched.h | 3 +-
drivers/gpu/drm/radeon/radeon_fbdev.c | 13 +-
drivers/gpu/drm/scheduler/sched_fence.c | 4 +-
drivers/gpu/drm/scheduler/sched_main.c | 7 +-
drivers/gpu/drm/tegra/fbdev.c | 18 +-
drivers/gpu/drm/v3d/v3d_submit.c | 2 +-
drivers/gpu/drm/vc4/vc4_irq.c | 2 +-
drivers/gpu/drm/vc4/vc4_validate.c | 29 +-
drivers/gpu/drm/vmwgfx/ttm_object.c | 7 +-
drivers/gpu/drm/vmwgfx/vmwgfx_blit.c | 39 +-
drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 20 +-
drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 4 +-
drivers/gpu/drm/vmwgfx/vmwgfx_shader.c | 13 +-
drivers/gpu/drm/vmwgfx/vmwgfx_vkms.c | 17 +-
drivers/gpu/drm/xe/Makefile | 1 +
drivers/gpu/drm/xe/display/xe_hdcp_gsc.c | 7 +-
drivers/gpu/drm/xe/xe_bo.c | 33 +-
drivers/gpu/drm/xe/xe_bo.h | 10 +-
drivers/gpu/drm/xe/xe_bo_types.h | 2 +
drivers/gpu/drm/xe/xe_dma_buf.c | 6 +-
drivers/gpu/drm/xe/xe_exec.c | 22 +-
drivers/gpu/drm/xe/xe_gt.c | 4 +-
drivers/gpu/drm/xe/xe_gt_debugfs.c | 4 +-
drivers/gpu/drm/xe/xe_gt_printk.h | 31 +
drivers/gpu/drm/xe/xe_hw_engine.c | 3 +-
drivers/gpu/drm/xe/xe_hw_engine_types.h | 8 +
drivers/gpu/drm/xe/xe_oa.c | 7 +
drivers/gpu/drm/xe/xe_oa_types.h | 3 +
drivers/gpu/drm/xe/xe_pagefault.c | 65 ++
drivers/gpu/drm/xe/xe_pagefault.h | 19 +
drivers/gpu/drm/xe/xe_pagefault_types.h | 136 ++++
drivers/gpu/drm/xe/xe_pt.c | 3 +
drivers/gpu/drm/xe/xe_reg_sr.c | 53 --
drivers/gpu/drm/xe/xe_reg_whitelist.c | 147 ++++-
drivers/gpu/drm/xe/xe_reg_whitelist.h | 4 +
drivers/gpu/drm/xe/xe_sched_job.c | 3 +-
drivers/gpu/drm/xe/xe_vm.c | 3 +-
drivers/hid/hid-logitech-dj.c | 28 +-
drivers/hv/vmbus_drv.c | 13 +-
drivers/hwmon/Kconfig | 5 +-
drivers/hwmon/adt7470.c | 131 ++--
drivers/hwmon/ina2xx.c | 251 ++++++--
drivers/hwmon/lm90.c | 4 +-
drivers/hwmon/ltc4282.c | 4 +-
drivers/hwmon/nct6775-core.c | 20 +-
drivers/hwmon/npcm750-pwm-fan.c | 11 +
drivers/hwmon/nzxt-smart2.c | 2 +-
drivers/hwmon/pmbus/pmbus_core.c | 7 +-
drivers/hwmon/sht3x.c | 9 +-
drivers/i2c/busses/i2c-amd-mp2-plat.c | 4 +-
drivers/i2c/busses/i2c-bcm-iproc.c | 11 +
drivers/i2c/busses/i2c-imx.c | 9 +-
drivers/i2c/busses/i2c-jz4780.c | 5 +-
drivers/iommu/iova.c | 6 +
drivers/media/i2c/imx219.c | 31 +-
.../media/platform/chips-media/wave5/wave5-hw.c | 3 +
.../platform/chips-media/wave5/wave5-vpu-enc.c | 5 +-
.../platform/chips-media/wave5/wave5-vpuapi.h | 1 +
drivers/net/can/c_can/c_can_main.c | 8 +-
drivers/net/can/ctucanfd/ctucanfd_base.c | 14 +-
drivers/net/can/ctucanfd/ctucanfd_pci.c | 3 +-
drivers/net/can/dev/skb.c | 2 -
drivers/net/can/softing/softing_fw.c | 46 +-
drivers/net/can/usb/ems_usb.c | 43 ++
drivers/net/can/usb/etas_es58x/es58x_core.c | 1 -
drivers/net/can/usb/gs_usb.c | 4 +-
drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c | 1 +
drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c | 13 +-
drivers/net/can/usb/peak_usb/pcan_usb_core.c | 1 -
drivers/net/can/usb/peak_usb/pcan_usb_fd.c | 40 +-
drivers/net/can/usb/peak_usb/pcan_usb_pro.c | 20 +-
drivers/net/dsa/mt7530-mdio.c | 11 +-
drivers/net/dsa/mt7530.c | 58 +-
drivers/net/ethernet/airoha/airoha_eth.c | 2 +-
drivers/net/ethernet/intel/e1000/e1000_main.c | 2 +-
drivers/net/ethernet/intel/ice/ice_ethtool.c | 10 +-
drivers/net/ethernet/intel/ice/ice_main.c | 10 +
drivers/net/ethernet/intel/idpf/idpf_lib.c | 2 +-
drivers/net/ethernet/intel/idpf/idpf_txrx.c | 5 +-
drivers/net/ethernet/intel/idpf/idpf_txrx.h | 2 +-
drivers/net/ethernet/intel/igbvf/netdev.c | 2 -
.../net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 2 +-
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 58 +-
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 7 +-
drivers/net/ethernet/nvidia/forcedeth.c | 4 +-
drivers/net/ethernet/qlogic/qede/qede_main.c | 44 +-
drivers/net/ethernet/realtek/rtase/rtase_main.c | 3 +
drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 14 +-
drivers/net/ethernet/wangxun/libwx/wx_lib.c | 2 +
drivers/net/netconsole.c | 3 +-
drivers/net/phy/phylink.c | 29 +-
drivers/net/veth.c | 4 +-
drivers/net/vxlan/vxlan_core.c | 15 +-
drivers/net/wireless/ath/ath6kl/txrx.c | 2 +-
.../wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 16 +-
.../net/wireless/broadcom/brcm80211/brcmfmac/bus.h | 6 +
.../wireless/broadcom/brcm80211/brcmfmac/chip.c | 4 +-
.../wireless/broadcom/brcm80211/brcmfmac/core.c | 46 +-
.../wireless/broadcom/brcm80211/brcmfmac/pcie.c | 6 +
.../wireless/broadcom/brcm80211/brcmfmac/sdio.c | 14 +-
.../wireless/broadcom/brcm80211/brcmfmac/sdio.h | 1 +
.../net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 3 +
.../broadcom/brcm80211/include/brcm_hw_ids.h | 2 +-
.../net/wireless/marvell/mwifiex/11n_rxreorder.c | 2 +-
drivers/of/of_reserved_mem.c | 87 ++-
drivers/phy/xilinx/phy-zynqmp.c | 130 ++--
drivers/pinctrl/Kconfig | 2 +
drivers/pinctrl/devicetree.c | 4 +
drivers/pinctrl/pinctrl-amd.c | 3 +-
drivers/pinctrl/qcom/pinctrl-msm.c | 8 +-
drivers/pinctrl/qcom/pinctrl-sc8280xp.c | 21 +-
drivers/power/supply/bq25890_charger.c | 2 +-
drivers/power/supply/max17040_battery.c | 6 +-
drivers/s390/block/dasd_eckd.c | 11 +-
drivers/s390/block/dasd_ioctl.c | 2 +-
drivers/s390/crypto/zcrypt_api.c | 2 +-
drivers/s390/crypto/zcrypt_ccamisc.c | 6 +
drivers/s390/net/qeth_core_main.c | 3 +
drivers/s390/scsi/zfcp_aux.c | 1 +
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 10 +-
drivers/scsi/libiscsi.c | 2 +-
drivers/scsi/libiscsi_tcp.c | 8 +-
drivers/scsi/libsas/sas_init.c | 37 +-
drivers/scsi/scsi_debug.c | 8 +-
drivers/spi/spi-cadence.c | 129 +++-
drivers/spi/spi-qcom-qspi.c | 3 +-
drivers/target/target_core_iblock.c | 6 +-
drivers/target/target_core_transport.c | 12 +-
drivers/thunderbolt/xdomain.c | 40 +-
drivers/ufs/core/ufshcd.c | 6 +-
drivers/usb/gadget/function/f_tcm.c | 192 +++++-
drivers/usb/gadget/function/tcm.h | 13 +
drivers/usb/typec/ucsi/ucsi.c | 88 +--
drivers/usb/typec/ucsi/ucsi.h | 1 +
fs/binfmt_misc.c | 8 +
fs/btrfs/super.c | 8 +-
fs/btrfs/zoned.c | 6 +-
fs/erofs/Kconfig | 14 +
fs/erofs/decompressor_lzma.c | 3 +-
fs/proc/task_mmu.c | 33 +-
fs/smb/client/cifssmb.c | 12 +-
fs/smb/server/vfs_cache.c | 6 +-
include/drm/drm_exec.h | 20 +-
include/drm/drm_fb_helper.h | 12 -
include/drm/gpu_scheduler.h | 12 +-
include/linux/alloc_tag.h | 3 +
include/linux/can/core.h | 1 +
include/linux/can/skb.h | 2 -
include/linux/dma/qcom_bam_dma.h | 21 +-
include/linux/kmemleak.h | 4 +
include/linux/libata.h | 2 +-
include/linux/mmc/sdio_ids.h | 2 +-
include/linux/netfilter/nf_conntrack_sip.h | 2 +-
include/linux/slab.h | 8 +-
include/linux/thunderbolt.h | 3 +
include/linux/trace_events.h | 4 -
include/net/ip_vs.h | 45 +-
include/net/neighbour.h | 8 +-
include/net/netfilter/nf_conntrack_expect.h | 5 +-
include/net/netfilter/nf_tables.h | 4 +-
include/scsi/libsas.h | 1 -
include/trace/events/rxrpc.h | 14 +-
include/uapi/linux/rkisp1-config.h | 6 +-
kernel/audit.c | 11 +-
kernel/auditfilter.c | 6 +-
kernel/bpf/verifier.c | 1 +
kernel/sched/cpufreq_schedutil.c | 11 +
kernel/sched/deadline.c | 3 +-
kernel/trace/trace.c | 44 +-
kernel/trace/trace.h | 4 -
kernel/trace/trace_branch.c | 4 +-
kernel/trace/trace_events.c | 6 +-
kernel/trace/trace_events_filter.c | 3 +
kernel/trace/trace_functions_graph.c | 8 +-
kernel/trace/trace_hwlat.c | 4 +-
kernel/trace/trace_mmiotrace.c | 21 +-
kernel/trace/trace_osnoise.c | 12 +-
kernel/trace/trace_probe.c | 6 +-
kernel/trace/trace_sched_wakeup.c | 8 +-
lib/alloc_tag.c | 9 +
lib/assoc_array.c | 3 +-
lib/rhashtable.c | 1 +
lib/test_fortify/Makefile | 1 +
lib/win_minmax.c | 1 +
mm/huge_memory.c | 16 +-
mm/hugetlb.c | 12 +-
mm/kmemleak.c | 44 +-
mm/memcontrol-v1.h | 6 +-
mm/migrate_device.c | 5 +-
mm/mm_init.c | 15 +-
mm/page_reporting.c | 6 +-
mm/percpu-km.c | 2 +-
mm/slab.h | 28 +-
mm/slab_common.c | 13 +
mm/slub.c | 34 +-
net/bluetooth/hci_conn.c | 14 +-
net/bluetooth/hci_sync.c | 154 +++--
net/bluetooth/hidp/core.c | 30 +-
net/bluetooth/iso.c | 113 ++--
net/bluetooth/l2cap_core.c | 5 +
net/bluetooth/mgmt.c | 84 ++-
net/bridge/br_mrp.c | 2 +-
net/bridge/br_multicast.c | 1 +
net/bridge/br_netfilter_hooks.c | 6 +-
net/can/af_can.c | 14 +-
net/can/bcm.c | 2 -
net/can/isotp.c | 337 +++++++---
net/can/j1939/bus.c | 2 +
net/can/j1939/j1939-priv.h | 3 +
net/can/j1939/main.c | 8 +-
net/can/j1939/socket.c | 1 -
net/can/j1939/transport.c | 6 +-
net/can/raw.c | 7 +-
net/core/lwt_bpf.c | 4 +-
net/core/skbuff.c | 18 +-
net/ipv4/route.c | 2 -
net/ipv4/udp_tunnel_nic.c | 32 +-
net/ipv6/fib6_rules.c | 1 +
net/ipv6/ip6_output.c | 2 +-
net/ipv6/ndisc.c | 2 +
net/mac80211/s1g.c | 4 +
net/mpls/af_mpls.c | 1 +
net/mptcp/pm.c | 9 +-
net/mptcp/pm_netlink.c | 29 +-
net/mptcp/pm_userspace.c | 87 ++-
net/mptcp/protocol.h | 6 +-
net/netfilter/ipset/ip_set_hash_gen.h | 2 +-
net/netfilter/ipvs/ip_vs_app.c | 4 +-
net/netfilter/ipvs/ip_vs_conn.c | 3 +
net/netfilter/ipvs/ip_vs_core.c | 180 +++---
net/netfilter/ipvs/ip_vs_proto_sctp.c | 19 +-
net/netfilter/ipvs/ip_vs_proto_tcp.c | 48 +-
net/netfilter/ipvs/ip_vs_proto_udp.c | 54 +-
net/netfilter/ipvs/ip_vs_xmit.c | 42 +-
net/netfilter/nf_conntrack_broadcast.c | 1 +
net/netfilter/nf_conntrack_core.c | 7 +-
net/netfilter/nf_conntrack_expect.c | 1 +
net/netfilter/nf_conntrack_h323_main.c | 12 +-
net/netfilter/nf_conntrack_helper.c | 5 +
net/netfilter/nf_conntrack_netlink.c | 18 +-
net/netfilter/nf_conntrack_sip.c | 4 +-
net/netfilter/nf_nat_sip.c | 2 +-
net/netfilter/nf_tables_api.c | 34 +-
net/netfilter/nft_payload.c | 12 +-
net/netfilter/xt_hashlimit.c | 16 +-
net/openvswitch/actions.c | 12 +-
net/openvswitch/meter.c | 33 +-
net/rds/ib.c | 4 +
net/rds/ib_cm.c | 4 +
net/rds/tcp.c | 14 +-
net/rxrpc/ar-internal.h | 38 +-
net/rxrpc/call_accept.c | 1 +
net/rxrpc/call_event.c | 19 +-
net/rxrpc/call_object.c | 2 +
net/rxrpc/input.c | 12 +-
net/rxrpc/output.c | 14 +-
net/rxrpc/peer_object.c | 20 +-
net/rxrpc/proc.c | 6 +-
net/rxrpc/rtt.c | 103 +--
net/rxrpc/sendmsg.c | 2 +-
net/sctp/associola.c | 3 +
net/sctp/sm_make_chunk.c | 17 +-
net/smc/smc_core.c | 2 +-
net/tipc/socket.c | 2 +-
security/keys/keyring.c | 14 +-
security/keys/trusted-keys/trusted_dcp.c | 15 +-
sound/core/pcm_native.c | 7 +
sound/core/seq/seq_timer.c | 9 +-
sound/core/timer.c | 2 +
sound/core/ump.c | 1 +
sound/pci/hda/patch_hdmi.c | 48 +-
sound/pci/lx6464es/lx6464es.c | 5 +-
sound/pci/lx6464es/lx_core.c | 5 +-
sound/soc/codecs/max98090.c | 5 +-
sound/soc/codecs/max98095.c | 5 +-
sound/soc/codecs/tas2562.c | 30 +-
sound/usb/6fire/chip.c | 4 +
sound/usb/endpoint.c | 14 +-
sound/usb/midi.c | 2 +
sound/usb/midi2.c | 4 +-
sound/usb/mixer_quirks.c | 2 +-
tools/testing/kunit/kunit_kernel.py | 39 +-
tools/testing/kunit/kunit_tool_test.py | 42 ++
tools/testing/selftests/clone3/clone3_set_tid.c | 2 +-
tools/testing/selftests/mm/mlock-random-test.c | 2 +-
387 files changed, 4750 insertions(+), 2372 deletions(-)
From gregkh@linuxfoundation.org Fri Aug 7 16:34:18 2026
Message-ID: <20260807143418.550667215@linuxfoundation.org>
User-Agent: quilt/0.69
Date: Fri, 07 Aug 2026 16:34:19 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: patches@lists.linux.dev, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, linux@roeck-us.net, shuah@kernel.org, patches@kernelci.org, lkft-triage@lists.linaro.org, pavel@nabladev.com, jonathanh@nvidia.com, f.fainelli@gmail.com, sudipm.mukherjee@gmail.com, rwarsow@gmx.de, conor@kernel.org, hargar@microsoft.com, broonie@kernel.org, achill@achill.org, sr@sladewatkins.com,
Ilya Maximets <i.maximets@ovn.org>,
Pablo Neira Ayuso <pablo@netfilter.org>,
Sasha Levin <sashal@kernel.org>
X-stable: review
X-Patchwork-Hint: ignore
Subject: [PATCH 6.12 001/337] netfilter: nf_conntrack_expect: restore helper propagation via
expectation
MIME-Version: 1.0
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pablo Neira Ayuso <pablo@netfilter.org>
[ Upstream commit dcb0f9aefdd604d36710fda53c25bd7cf4a3e37a ]
A recent series to fix expectations broke helper propagation via
expectation, this mechanism is used by the sip and h323 helper. This
also propagates the conntrack helper to expected connections. I changed
semantics of exp->helper which now tells us the actual helper that
created the expectation.
Add an explicit assign_helper field to expectations for this purpose
and update helpers to use it.
Restore this feature for userspace conntrack helper via ctnetlink
nfqueue integration so it is again possible to attach a helper to an
expectation, where it makes sense. This is not restored via ctnetlink
expectation creation as there is no client for such feature. Use the
expectation layer 4 protocol number for the helper lookup for
consistency.
Make sure the expectation using this helper propagation mechanism also
go away when the helper is unregistered.
Fixes: 9c42bc9db90a ("netfilter: nf_conntrack_expect: honor expectation helper field")
Fixes: 917b61fa2042 ("netfilter: ctnetlink: ignore explicit helper on new expectations")
Reported-by: Ilya Maximets <i.maximets@ovn.org>
Tested-by: Ilya Maximets <i.maximets@ovn.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/netfilter/nf_conntrack_expect.h | 5 ++++-
net/netfilter/nf_conntrack_broadcast.c | 1 +
net/netfilter/nf_conntrack_core.c | 7 +++++--
net/netfilter/nf_conntrack_expect.c | 1 +
net/netfilter/nf_conntrack_h323_main.c | 12 ++++++------
net/netfilter/nf_conntrack_helper.c | 5 +++++
net/netfilter/nf_conntrack_netlink.c | 18 ++++++++++++++++--
net/netfilter/nf_conntrack_sip.c | 2 +-
8 files changed, 39 insertions(+), 12 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h
index e9a8350e7ccf..80f50fd0f7ad 100644
--- a/include/net/netfilter/nf_conntrack_expect.h
+++ b/include/net/netfilter/nf_conntrack_expect.h
@@ -45,9 +45,12 @@ struct nf_conntrack_expect {
void (*expectfn)(struct nf_conn *new,
struct nf_conntrack_expect *this);
- /* Helper to assign to new connection */
+ /* Helper that created this expectation */
struct nf_conntrack_helper __rcu *helper;
+ /* Helper to assign to new connection */
+ struct nf_conntrack_helper __rcu *assign_helper;
+
/* The conntrack of the master connection */
struct nf_conn *master;
diff --git a/net/netfilter/nf_conntrack_broadcast.c b/net/netfilter/nf_conntrack_broadcast.c
index f9528d4db0a8..93c501d9d399 100644
--- a/net/netfilter/nf_conntrack_broadcast.c
+++ b/net/netfilter/nf_conntrack_broadcast.c
@@ -72,6 +72,7 @@ int nf_conntrack_broadcast_help(struct sk_buff *skb,
exp->flags = NF_CT_EXPECT_PERMANENT;
exp->class = NF_CT_EXPECT_CLASS_DEFAULT;
rcu_assign_pointer(exp->helper, helper);
+ rcu_assign_pointer(exp->assign_helper, NULL);
write_pnet(&exp->net, net);
#ifdef CONFIG_NF_CONNTRACK_ZONES
exp->zone = ct->zone;
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 423080cf86a4..0c457e159727 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1773,14 +1773,17 @@ init_conntrack(struct net *net, struct nf_conn *tmpl,
spin_lock_bh(&nf_conntrack_expect_lock);
exp = nf_ct_find_expectation(net, zone, tuple, !tmpl || nf_ct_is_confirmed(tmpl));
if (exp) {
+ struct nf_conntrack_helper *assign_helper;
+
/* Welcome, Mr. Bond. We've been expecting you... */
__set_bit(IPS_EXPECTED_BIT, &ct->status);
/* exp->master safe, refcnt bumped in nf_ct_find_expectation */
ct->master = exp->master;
- if (exp->helper) {
+ assign_helper = rcu_dereference(exp->assign_helper);
+ if (assign_helper) {
help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
if (help)
- rcu_assign_pointer(help->helper, exp->helper);
+ rcu_assign_pointer(help->helper, assign_helper);
}
#ifdef CONFIG_NF_CONNTRACK_MARK
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index bb8b87f9ee50..a8929885485b 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -344,6 +344,7 @@ void nf_ct_expect_init(struct nf_conntrack_expect *exp, unsigned int class,
helper = rcu_dereference(help->helper);
rcu_assign_pointer(exp->helper, helper);
+ rcu_assign_pointer(exp->assign_helper, NULL);
write_pnet(&exp->net, net);
#ifdef CONFIG_NF_CONNTRACK_ZONES
exp->zone = ct->zone;
diff --git a/net/netfilter/nf_conntrack_h323_main.c b/net/netfilter/nf_conntrack_h323_main.c
index 791aafe9f396..c42547284f35 100644
--- a/net/netfilter/nf_conntrack_h323_main.c
+++ b/net/netfilter/nf_conntrack_h323_main.c
@@ -642,7 +642,7 @@ static int expect_h245(struct sk_buff *skb, struct nf_conn *ct,
&ct->tuplehash[!dir].tuple.src.u3,
&ct->tuplehash[!dir].tuple.dst.u3,
IPPROTO_TCP, NULL, &port);
- rcu_assign_pointer(exp->helper, &nf_conntrack_helper_h245);
+ rcu_assign_pointer(exp->assign_helper, &nf_conntrack_helper_h245);
nathook = rcu_dereference(nfct_h323_nat_hook);
if (memcmp(&ct->tuplehash[dir].tuple.src.u3,
@@ -766,7 +766,7 @@ static int expect_callforwarding(struct sk_buff *skb,
nf_ct_expect_init(exp, NF_CT_EXPECT_CLASS_DEFAULT, nf_ct_l3num(ct),
&ct->tuplehash[!dir].tuple.src.u3, &addr,
IPPROTO_TCP, NULL, &port);
- rcu_assign_pointer(exp->helper, nf_conntrack_helper_q931);
+ rcu_assign_pointer(exp->assign_helper, nf_conntrack_helper_q931);
nathook = rcu_dereference(nfct_h323_nat_hook);
if (memcmp(&ct->tuplehash[dir].tuple.src.u3,
@@ -1233,7 +1233,7 @@ static int expect_q931(struct sk_buff *skb, struct nf_conn *ct,
&ct->tuplehash[!dir].tuple.src.u3 : NULL,
&ct->tuplehash[!dir].tuple.dst.u3,
IPPROTO_TCP, NULL, &port);
- rcu_assign_pointer(exp->helper, nf_conntrack_helper_q931);
+ rcu_assign_pointer(exp->assign_helper, nf_conntrack_helper_q931);
exp->flags = NF_CT_EXPECT_PERMANENT; /* Accept multiple calls */
nathook = rcu_dereference(nfct_h323_nat_hook);
@@ -1305,7 +1305,7 @@ static int process_gcf(struct sk_buff *skb, struct nf_conn *ct,
nf_ct_expect_init(exp, NF_CT_EXPECT_CLASS_DEFAULT, nf_ct_l3num(ct),
&ct->tuplehash[!dir].tuple.src.u3, &addr,
IPPROTO_UDP, NULL, &port);
- rcu_assign_pointer(exp->helper, nf_conntrack_helper_ras);
+ rcu_assign_pointer(exp->assign_helper, nf_conntrack_helper_ras);
if (nf_ct_expect_related(exp, 0) == 0) {
pr_debug("nf_ct_ras: expect RAS ");
@@ -1522,7 +1522,7 @@ static int process_acf(struct sk_buff *skb, struct nf_conn *ct,
&ct->tuplehash[!dir].tuple.src.u3, &addr,
IPPROTO_TCP, NULL, &port);
exp->flags = NF_CT_EXPECT_PERMANENT;
- rcu_assign_pointer(exp->helper, nf_conntrack_helper_q931);
+ rcu_assign_pointer(exp->assign_helper, nf_conntrack_helper_q931);
if (nf_ct_expect_related(exp, 0) == 0) {
pr_debug("nf_ct_ras: expect Q.931 ");
@@ -1576,7 +1576,7 @@ static int process_lcf(struct sk_buff *skb, struct nf_conn *ct,
&ct->tuplehash[!dir].tuple.src.u3, &addr,
IPPROTO_TCP, NULL, &port);
exp->flags = NF_CT_EXPECT_PERMANENT;
- rcu_assign_pointer(exp->helper, nf_conntrack_helper_q931);
+ rcu_assign_pointer(exp->assign_helper, nf_conntrack_helper_q931);
if (nf_ct_expect_related(exp, 0) == 0) {
pr_debug("nf_ct_ras: expect Q.931 ");
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index 9150bcfd7ca8..ea0cdb7ec915 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -419,6 +419,11 @@ static bool expect_iter_me(struct nf_conntrack_expect *exp, void *data)
this = rcu_dereference_protected(exp->helper,
lockdep_is_held(&nf_conntrack_expect_lock));
+ if (this == me)
+ return true;
+
+ this = rcu_dereference_protected(exp->assign_helper,
+ lockdep_is_held(&nf_conntrack_expect_lock));
return this == me;
}
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index eacbbc342c3f..80fdb875c977 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -2630,6 +2630,7 @@ static const struct nla_policy exp_nla_policy[CTA_EXPECT_MAX+1] = {
static struct nf_conntrack_expect *
ctnetlink_alloc_expect(const struct nlattr *const cda[], struct nf_conn *ct,
+ const struct nf_conntrack_helper *assign_helper,
struct nf_conntrack_tuple *tuple,
struct nf_conntrack_tuple *mask);
@@ -2856,6 +2857,7 @@ static int
ctnetlink_glue_attach_expect(const struct nlattr *attr, struct nf_conn *ct,
u32 portid, u32 report)
{
+ struct nf_conntrack_helper *assign_helper = NULL;
struct nlattr *cda[CTA_EXPECT_MAX+1];
struct nf_conntrack_tuple tuple, mask;
struct nf_conntrack_expect *exp;
@@ -2871,8 +2873,18 @@ ctnetlink_glue_attach_expect(const struct nlattr *attr, struct nf_conn *ct,
if (err < 0)
return err;
+ if (cda[CTA_EXPECT_HELP_NAME]) {
+ const char *helpname = nla_data(cda[CTA_EXPECT_HELP_NAME]);
+
+ assign_helper = __nf_conntrack_helper_find(helpname,
+ nf_ct_l3num(ct),
+ tuple.dst.protonum);
+ if (!assign_helper)
+ return -EOPNOTSUPP;
+ }
+
exp = ctnetlink_alloc_expect((const struct nlattr * const *)cda, ct,
- &tuple, &mask);
+ assign_helper, &tuple, &mask);
if (IS_ERR(exp))
return PTR_ERR(exp);
@@ -3511,6 +3523,7 @@ ctnetlink_parse_expect_nat(const struct nlattr *attr,
static struct nf_conntrack_expect *
ctnetlink_alloc_expect(const struct nlattr * const cda[], struct nf_conn *ct,
+ const struct nf_conntrack_helper *assign_helper,
struct nf_conntrack_tuple *tuple,
struct nf_conntrack_tuple *mask)
{
@@ -3564,6 +3577,7 @@ ctnetlink_alloc_expect(const struct nlattr * const cda[], struct nf_conn *ct,
exp->zone = ct->zone;
#endif
rcu_assign_pointer(exp->helper, helper);
+ rcu_assign_pointer(exp->assign_helper, assign_helper);
exp->tuple = *tuple;
exp->mask.src.u3 = mask->src.u3;
exp->mask.src.u.all = mask->src.u.all;
@@ -3619,7 +3633,7 @@ ctnetlink_create_expect(struct net *net,
ct = nf_ct_tuplehash_to_ctrack(h);
rcu_read_lock();
- exp = ctnetlink_alloc_expect(cda, ct, &tuple, &mask);
+ exp = ctnetlink_alloc_expect(cda, ct, NULL, &tuple, &mask);
if (IS_ERR(exp)) {
err = PTR_ERR(exp);
goto err_rcu;
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index bd91b8b47f4b..852c0b74b8a7 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -1386,7 +1386,7 @@ static int process_register_request(struct sk_buff *skb, unsigned int protoff,
nf_ct_expect_init(exp, SIP_EXPECT_SIGNALLING, nf_ct_l3num(ct),
saddr, &daddr, proto, NULL, &port);
exp->timeout.expires = sip_timeout * HZ;
- rcu_assign_pointer(exp->helper, helper);
+ rcu_assign_pointer(exp->assign_helper, helper);
exp->flags = NF_CT_EXPECT_PERMANENT | NF_CT_EXPECT_INACTIVE;
hooks = rcu_dereference(nf_nat_sip_hooks);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 002/337] um: Add os_set_pdeathsig helper function
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 003/337] um: Set parent death signal for winch thread/process Greg Kroah-Hartman
` (342 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tiwei Bie, Johannes Berg,
Florian Fainelli, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tiwei Bie <tiwei.btw@antgroup.com>
commit 4e5adbe447db382cc76e05613581f96aef4f91d2 upstream.
This helper can be used to set the parent-death signal of the calling
process to SIGKILL to ensure that the process will be killed if the
UML kernel dies unexpectedly without proper cleanup. This helper will
be used in the follow-up patches.
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20241024142828.2612828-2-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/um/include/shared/os.h | 2 ++
arch/um/os-Linux/process.c | 6 ++++++
2 files changed, 8 insertions(+)
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index 77a8593f219a..2a0843cc2208 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -219,6 +219,8 @@ extern int os_unmap_memory(void *addr, int len);
extern int os_drop_memory(void *addr, int length);
extern int can_drop_memory(void);
+void os_set_pdeathsig(void);
+
/* execvp.c */
extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
/* helper.c */
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index 2686120ab232..4015d3dc3958 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -12,6 +12,7 @@
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/ptrace.h>
+#include <sys/prctl.h>
#include <sys/wait.h>
#include <asm/unistd.h>
#include <init.h>
@@ -234,3 +235,8 @@ void init_new_thread_signals(void)
set_handler(SIGIO);
signal(SIGWINCH, SIG_IGN);
}
+
+void os_set_pdeathsig(void)
+{
+ prctl(PR_SET_PDEATHSIG, SIGKILL);
+}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 003/337] um: Set parent death signal for winch thread/process
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 002/337] um: Add os_set_pdeathsig helper function Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 004/337] um: Use os_set_pdeathsig helper in " Greg Kroah-Hartman
` (341 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Benjamin Berg, Johannes Berg,
Florian Fainelli, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Berg <benjamin.berg@intel.com>
commit fdb2ecd35d327a1fc6bba69b97f85b494e1f4b6b upstream.
The winch "thread" is really a separate process. Using prctl to set
PR_SET_PDEATHSIG ensures that this separate thread will be killed if the
UML kernel itself dies unexpectedly and does not perform proper cleanup.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://patch.msgid.link/20240919124511.282088-5-benjamin@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/um/drivers/chan_user.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index a66e556012c4..1434114b2f34 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -10,6 +10,7 @@
#include <signal.h>
#include <termios.h>
#include <sys/ioctl.h>
+#include <sys/prctl.h>
#include "chan_user.h"
#include <os.h>
#include <um_malloc.h>
@@ -161,6 +162,8 @@ static __noreturn int winch_thread(void *arg)
int count;
char c = 1;
+ prctl(PR_SET_PDEATHSIG, SIGKILL);
+
pty_fd = data->pty_fd;
pipe_fd = data->pipe_fd;
count = write(pipe_fd, &c, sizeof(c));
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 004/337] um: Use os_set_pdeathsig helper in winch thread/process
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 002/337] um: Add os_set_pdeathsig helper function Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 003/337] um: Set parent death signal for winch thread/process Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 005/337] um: Set parent-death signal for ubd io thread/process Greg Kroah-Hartman
` (340 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tiwei Bie, Johannes Berg,
Florian Fainelli, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tiwei Bie <tiwei.btw@antgroup.com>
commit 42b8b00c8ab1ac18fccde3f29ee589626a561ea7 upstream.
Since we have a helper now, let's switch to using it. It will make
the code slightly more consistent.
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20241024142828.2612828-5-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/um/drivers/chan_user.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index 1434114b2f34..35f9beeb19b3 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -10,7 +10,6 @@
#include <signal.h>
#include <termios.h>
#include <sys/ioctl.h>
-#include <sys/prctl.h>
#include "chan_user.h"
#include <os.h>
#include <um_malloc.h>
@@ -162,7 +161,7 @@ static __noreturn int winch_thread(void *arg)
int count;
char c = 1;
- prctl(PR_SET_PDEATHSIG, SIGKILL);
+ os_set_pdeathsig();
pty_fd = data->pty_fd;
pipe_fd = data->pipe_fd;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 005/337] um: Set parent-death signal for ubd io thread/process
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (2 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 004/337] um: Use os_set_pdeathsig helper in " Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 006/337] um: Set parent-death signal for write_sigio thread/process Greg Kroah-Hartman
` (339 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tiwei Bie, Johannes Berg,
Florian Fainelli, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tiwei Bie <tiwei.btw@antgroup.com>
commit 9b5e6c0f5a9199c69af81ac5bedc512ee7dc20b3 upstream.
The ubd io thread is not really a traditional thread. Set the
parent-death signal for it to ensure that it will be killed if
the UML kernel dies unexpectedly without proper cleanup.
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20241024142828.2612828-3-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/um/drivers/ubd_kern.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 2bfb17373244..66c1a8835e36 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1501,6 +1501,7 @@ int io_thread(void *arg)
{
int n, count, written, res;
+ os_set_pdeathsig();
os_fix_helper_signals();
while(1){
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 006/337] um: Set parent-death signal for write_sigio thread/process
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (3 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 005/337] um: Set parent-death signal for ubd io thread/process Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 007/337] um: Set parent death signal for userspace process Greg Kroah-Hartman
` (338 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tiwei Bie, Johannes Berg,
Florian Fainelli, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tiwei Bie <tiwei.btw@antgroup.com>
commit c6c4adee65969218b0b7b13f568fd2c6f2333373 upstream.
The write_sigio thread is not really a traditional thread. Set
the parent-death signal for it to ensure that it will be killed
if the UML kernel dies unexpectedly without proper cleanup.
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20241024142828.2612828-4-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/um/os-Linux/sigio.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c
index 9e71794839e8..9aac8def4d63 100644
--- a/arch/um/os-Linux/sigio.c
+++ b/arch/um/os-Linux/sigio.c
@@ -55,6 +55,7 @@ static int write_sigio_thread(void *unused)
int i, n, respond_fd;
char c;
+ os_set_pdeathsig();
os_fix_helper_signals();
fds = ¤t_poll;
while (1) {
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 007/337] um: Set parent death signal for userspace process
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (4 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 006/337] um: Set parent-death signal for write_sigio thread/process Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 008/337] kunit: tool: Terminate kernel under test on SIGINT Greg Kroah-Hartman
` (337 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Benjamin Berg, Johannes Berg,
Florian Fainelli, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Berg <benjamin.berg@intel.com>
commit 801e00d3a1b78b7f71675fae79946ff4aa3ee070 upstream.
Enable PR_SET_PDEATHSIG so that the UML userspace process will be killed
when the kernel exits unexpectedly.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://patch.msgid.link/20240919124511.282088-4-benjamin@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
[florian: upstream applies os_set_pdeathsig() in stub_exe.c, a file
introduced in v6.13 that does not exist in 6.12; applied instead to
userspace_tramp() in arch/um/os-Linux/skas/process.c, which is the
equivalent entry-point for the userspace process in 6.12]
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/um/os-Linux/skas/process.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index b6f656bcffb1..cca016b0b29b 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -214,6 +214,9 @@ static int userspace_tramp(void *stack)
(unsigned long) stub_segv_handler -
(unsigned long) __syscall_stub_start;
+ /* Make sure this process dies if the kernel dies */
+ os_set_pdeathsig();
+
ptrace(PTRACE_TRACEME, 0, 0, 0);
signal(SIGTERM, SIG_DFL);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 008/337] kunit: tool: Terminate kernel under test on SIGINT
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (5 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 007/337] um: Set parent death signal for userspace process Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 009/337] kunit: tool: skip stty when stdin is not a tty Greg Kroah-Hartman
` (336 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Andy Shevchenko, David Gow,
Shuah Khan, Florian Fainelli, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Gow <david@davidgow.net>
commit 8f260b02eeeffbf2263c2b82b6e3e32fd73cde2b upstream.
kunit.py will attempt to catch SIGINT / ^C in order to ensure the TTY isn't
messed up, but never actually attempts to terminate the running kernel (be
it UML or QEMU). This can lead to a bit of frustration if the kernel has
crashed or hung.
Terminate the kernel process in the signal handler, if it's running. This
requires plumbing through the process handle in a few more places (and
having some checks to see if the kernel is still running in places where it
may have already been killed).
Reported-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Closes: https://lore.kernel.org/all/aaFmiAmg9S18EANA@smile.fi.intel.com/
Signed-off-by: David Gow <david@davidgow.net>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
[florian: resolved conflict in signal_handler(): upstream references
_restore_terminal_if_tty() which is introduced by the following commit;
retained subprocess.call(['stty', 'sane']) until that helper is available]
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/kunit/kunit_kernel.py | 28 +++++++++++++++++++---------
1 file changed, 19 insertions(+), 9 deletions(-)
diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
index 12b0f2ee5665..3f2979f2f6ea 100644
--- a/tools/testing/kunit/kunit_kernel.py
+++ b/tools/testing/kunit/kunit_kernel.py
@@ -15,7 +15,7 @@ import shlex
import shutil
import signal
import threading
-from typing import Iterator, List, Optional, Tuple
+from typing import Iterator, List, Optional, Tuple, Any
from types import FrameType
import kunit_config
@@ -252,6 +252,7 @@ class LinuxSourceTree:
if kconfig_add:
kconfig = kunit_config.parse_from_string('\n'.join(kconfig_add))
self._kconfig.merge_in_entries(kconfig)
+ self._process : Optional[subprocess.Popen[Any]] = None
def arch(self) -> str:
return self._arch
@@ -345,36 +346,45 @@ class LinuxSourceTree:
args.append('kunit.filter_action=' + filter_action)
args.append('kunit.enable=1')
- process = self._ops.start(args, build_dir)
- assert process.stdout is not None # tell mypy it's set
+ self._process = self._ops.start(args, build_dir)
+ assert self._process is not None # tell mypy it's set
+ assert self._process.stdout is not None # tell mypy it's set
# Enforce the timeout in a background thread.
def _wait_proc() -> None:
try:
- process.wait(timeout=timeout)
+ if self._process:
+ self._process.wait(timeout=timeout)
except Exception as e:
print(e)
- process.terminate()
- process.wait()
+ if self._process:
+ self._process.terminate()
+ self._process.wait()
waiter = threading.Thread(target=_wait_proc)
waiter.start()
output = open(get_outfile_path(build_dir), 'w')
try:
# Tee the output to the file and to our caller in real time.
- for line in process.stdout:
+ for line in self._process.stdout:
output.write(line)
yield line
# This runs even if our caller doesn't consume every line.
finally:
# Flush any leftover output to the file
- output.write(process.stdout.read())
+ if self._process:
+ if self._process.stdout:
+ output.write(self._process.stdout.read())
+ self._process.stdout.close()
+ self._process = None
output.close()
- process.stdout.close()
waiter.join()
subprocess.call(['stty', 'sane'])
def signal_handler(self, unused_sig: int, unused_frame: Optional[FrameType]) -> None:
logging.error('Build interruption occurred. Cleaning console.')
+ if self._process:
+ self._process.terminate()
+ self._process.wait()
subprocess.call(['stty', 'sane'])
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 009/337] kunit: tool: skip stty when stdin is not a tty
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (6 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 008/337] kunit: tool: Terminate kernel under test on SIGINT Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 010/337] um: Preserve errno within signal handler Greg Kroah-Hartman
` (335 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Shuvam Pandey, David Gow, Shuah Khan,
Florian Fainelli, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shuvam Pandey <shuvampandey1@gmail.com>
commit e42c349f4cdfa43cb39a68c8f764f8cafc23a9a9 upstream.
run_kernel() cleanup and signal_handler() invoke stty unconditionally.
When stdin is not a tty (for example in CI or unit tests), this writes
noise to stderr.
Call stty only when stdin is a tty.
Add regression tests for these paths:
- run_kernel() with non-tty stdin
- signal_handler() with non-tty stdin
- signal_handler() with tty stdin
Signed-off-by: Shuvam Pandey <shuvampandey1@gmail.com>
Reviewed-by: David Gow <david@davidgow.net>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
[florian: add missing 'import sys' required by sys.stdin.isatty(); the
module was already present in the mainline tree before this commit but
was absent from the 6.12 base of kunit_kernel.py]
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/kunit/kunit_kernel.py | 11 +++++--
tools/testing/kunit/kunit_tool_test.py | 42 ++++++++++++++++++++++++++
2 files changed, 51 insertions(+), 2 deletions(-)
diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
index 3f2979f2f6ea..c09b66ba734b 100644
--- a/tools/testing/kunit/kunit_kernel.py
+++ b/tools/testing/kunit/kunit_kernel.py
@@ -14,6 +14,7 @@ import os
import shlex
import shutil
import signal
+import sys
import threading
from typing import Iterator, List, Optional, Tuple, Any
from types import FrameType
@@ -333,6 +334,12 @@ class LinuxSourceTree:
return False
return self.validate_config(build_dir)
+ def _restore_terminal_if_tty(self) -> None:
+ # stty requires a controlling terminal; skip headless runs.
+ if sys.stdin is None or not sys.stdin.isatty():
+ return
+ subprocess.call(['stty', 'sane'])
+
def run_kernel(self, args: Optional[List[str]]=None, build_dir: str='', filter_glob: str='', filter: str='', filter_action: Optional[str]=None, timeout: Optional[int]=None) -> Iterator[str]:
# Copy to avoid mutating the caller-supplied list. exec_tests() reuses
# the same args across repeated run_kernel() calls (e.g. --run_isolated),
@@ -380,11 +387,11 @@ class LinuxSourceTree:
output.close()
waiter.join()
- subprocess.call(['stty', 'sane'])
+ self._restore_terminal_if_tty()
def signal_handler(self, unused_sig: int, unused_frame: Optional[FrameType]) -> None:
logging.error('Build interruption occurred. Cleaning console.')
if self._process:
self._process.terminate()
self._process.wait()
- subprocess.call(['stty', 'sane'])
+ self._restore_terminal_if_tty()
diff --git a/tools/testing/kunit/kunit_tool_test.py b/tools/testing/kunit/kunit_tool_test.py
index 70e5d0abe87f..6e6200d52540 100755
--- a/tools/testing/kunit/kunit_tool_test.py
+++ b/tools/testing/kunit/kunit_tool_test.py
@@ -503,6 +503,48 @@ class LinuxSourceTreeTest(unittest.TestCase):
self.assertIn('kunit.filter_glob=suite.test1', start_calls[0])
self.assertIn('kunit.filter_glob=suite.test2', start_calls[1])
+ def test_run_kernel_skips_terminal_reset_without_tty(self):
+ def fake_start(unused_args, unused_build_dir):
+ return subprocess.Popen(['printf', 'KTAP version 1\n'],
+ text=True, stdout=subprocess.PIPE)
+
+ non_tty_stdin = mock.Mock()
+ non_tty_stdin.isatty.return_value = False
+
+ with tempfile.TemporaryDirectory('') as build_dir:
+ tree = kunit_kernel.LinuxSourceTree(build_dir, kunitconfig_paths=[os.devnull])
+ with mock.patch.object(tree._ops, 'start', side_effect=fake_start), \
+ mock.patch.object(kunit_kernel.sys, 'stdin', non_tty_stdin), \
+ mock.patch.object(kunit_kernel.subprocess, 'call') as mock_call:
+ for _ in tree.run_kernel(build_dir=build_dir):
+ pass
+
+ mock_call.assert_not_called()
+
+ def test_signal_handler_skips_terminal_reset_without_tty(self):
+ non_tty_stdin = mock.Mock()
+ non_tty_stdin.isatty.return_value = False
+ tree = kunit_kernel.LinuxSourceTree('', kunitconfig_paths=[os.devnull])
+
+ with mock.patch.object(kunit_kernel.sys, 'stdin', non_tty_stdin), \
+ mock.patch.object(kunit_kernel.subprocess, 'call') as mock_call, \
+ mock.patch.object(kunit_kernel.logging, 'error') as mock_error:
+ tree.signal_handler(signal.SIGINT, None)
+ mock_error.assert_called_once()
+ mock_call.assert_not_called()
+
+ def test_signal_handler_resets_terminal_with_tty(self):
+ tty_stdin = mock.Mock()
+ tty_stdin.isatty.return_value = True
+ tree = kunit_kernel.LinuxSourceTree('', kunitconfig_paths=[os.devnull])
+
+ with mock.patch.object(kunit_kernel.sys, 'stdin', tty_stdin), \
+ mock.patch.object(kunit_kernel.subprocess, 'call') as mock_call, \
+ mock.patch.object(kunit_kernel.logging, 'error') as mock_error:
+ tree.signal_handler(signal.SIGINT, None)
+ mock_error.assert_called_once()
+ mock_call.assert_called_once_with(['stty', 'sane'])
+
def test_build_reconfig_no_config(self):
with tempfile.TemporaryDirectory('') as build_dir:
with open(kunit_kernel.get_kunitconfig_path(build_dir), 'w') as f:
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 010/337] um: Preserve errno within signal handler
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (7 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 009/337] kunit: tool: skip stty when stdin is not a tty Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 011/337] netfilter: br_netfilter: Reallocate headroom if necessary in neigh_hh_bridge() Greg Kroah-Hartman
` (334 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tiwei Bie, Johannes Berg,
Florian Fainelli, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tiwei Bie <tiwei.btw@antgroup.com>
commit f68b2d5a907b53eed99cf2efcaaae116df73c298 upstream.
We rely on errno to determine whether a syscall has failed, so we
need to ensure that accessing errno is async-signal-safe. Currently,
we preserve the errno in sig_handler_common(), but it doesn't cover
every possible case. Let's do it in hard_handler() instead, which
is the signal handler we actually register.
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20260106001228.1531146-2-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
[florian: hard_handler() in 6.12 retains the to_irq_stack/from_irq_stack
loop from before the upstream SMP refactoring; errno save/restore is wrapped
around that loop rather than replacing sig_handler_common's existing save/restore]
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/um/os-Linux/signal.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index b11ed66c8bb0..94abc9e3ec7e 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -190,6 +190,7 @@ static void hard_handler(int sig, siginfo_t *si, void *p)
{
ucontext_t *uc = p;
mcontext_t *mc = &uc->uc_mcontext;
+ int save_errno = errno;
unsigned long pending = 1UL << sig;
do {
@@ -227,6 +228,8 @@ static void hard_handler(int sig, siginfo_t *si, void *p)
if (!nested)
pending = from_irq_stack(nested);
} while (pending);
+
+ errno = save_errno;
}
void set_handler(int sig)
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 011/337] netfilter: br_netfilter: Reallocate headroom if necessary in neigh_hh_bridge()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (8 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 010/337] um: Preserve errno within signal handler Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 012/337] net: airoha: Fix register index for Tx-fwd counter configuration Greg Kroah-Hartman
` (333 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ido Schimmel, Lorenzo Bianconi,
Pablo Neira Ayuso, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lorenzo Bianconi <lorenzo@kernel.org>
[ Upstream commit b2870fc21601db9133bc70c48c603b487614fa3b ]
neigh_hh_bridge() assumes the skb always has sufficient headroom to copy
the aligned L2 header. This assumption can trigger the crash reported
below using the following netfilter setup:
$modprobe br_netfilter
$sysctl -w net.bridge.bridge-nf-call-iptables=1
$root@OpenWrt:~# nft list ruleset
table ip nat {
chain prerouting {
type nat hook prerouting priority dstnat; policy accept;
ip daddr 192.168.83.123 dnat to 192.168.83.120
}
}
- iperf3 client (192.168.83.119) --> bridge (192.168.83.118) --> iperf3 server (192.168.83.120)
the iperf3 client is sending packet for 192.168.83.123 to the bridge device.
[ 1579.036575] Unable to handle kernel write to read-only memory at virtual address ffffff8004d76ffe
[ 1579.045482] Mem abort info:
[ 1579.048273] ESR = 0x000000009600004f
[ 1579.052024] EC = 0x25: DABT (current EL), IL = 32 bits
[ 1579.057363] SET = 0, FnV = 0
[ 1579.060417] EA = 0, S1PTW = 0
[ 1579.063550] FSC = 0x0f: level 3 permission fault
[ 1579.068345] Data abort info:
[ 1579.071224] ISV = 0, ISS = 0x0000004f, ISS2 = 0x00000000
[ 1579.076720] CM = 0, WnR = 1, TnD = 0, TagAccess = 0
[ 1579.081770] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 1579.087092] swapper pgtable: 4k pages, 39-bit VAs, pgdp=0000000080dc4000
[ 1579.093794] [ffffff8004d76ffe] pgd=180000009ffff003, p4d=180000009ffff003, pud=180000009ffff003, pmd=180000009ffe3003, pte=0060000084d76787
[ 1579.106343] Internal error: Oops: 000000009600004f [#1] SMP
[ 1579.193824] CPU: 0 UID: 0 PID: 235 Comm: napi/qdma_eth-3 Tainted: G O 6.12.57 #0
[ 1579.202614] Tainted: [O]=OOT_MODULE
[ 1579.206102] Hardware name: Airoha AN7581 Evaluation Board (DT)
[ 1579.211929] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 1579.218889] pc : br_nf_pre_routing_finish_bridge+0x1ac/0xcc8 [br_netfilter]
[ 1579.225859] lr : br_nf_pre_routing_finish_bridge+0x18c/0xcc8 [br_netfilter]
[ 1579.232822] sp : ffffffc0817cba20
[ 1579.236128] x29: ffffffc0817cba20 x28: 0000000000000000 x27: ffffff8002b89000
[ 1579.243273] x26: ffffff8004d7700e x25: 0000000000000008 x24: 0000000000000000
[ 1579.250416] x23: ffffffc08179d4c0 x22: 0000000000000000 x21: ffffffc08179d4c0
[ 1579.257561] x20: ffffff8004d9b800 x19: ffffff8015010000 x18: 0000000000000014
[ 1579.264704] x17: ffffffbf9e930000 x16: ffffffc0817c8000 x15: 0000000000000070
[ 1579.271848] x14: 0000000000000080 x13: 0000000000000001 x12: 0000000000000000
[ 1579.278993] x11: ffffffc0798caae0 x10: ffffff8014db6fd8 x9 : 0000000000000000
[ 1579.286136] x8 : 0000000000000003 x7 : ffffffc08171f628 x6 : 000000001a3b83d3
[ 1579.293281] x5 : 0000000000000000 x4 : 1beb76f22fee0000 x3 : ffffff8004d7700e
[ 1579.300425] x2 : 0000000000000000 x1 : ffffff8004d9b8bc x0 : ffffff80026ed000
[ 1579.307570] Call trace:
[ 1579.310018] br_nf_pre_routing_finish_bridge+0x1ac/0xcc8 [br_netfilter]
[ 1579.316632] br_nf_hook_thresh+0xd4/0x14bc [br_netfilter]
[ 1579.322032] br_nf_hook_thresh+0x250/0x14bc [br_netfilter]
[ 1579.327517] br_nf_hook_thresh+0x76c/0x14bc [br_netfilter]
[ 1579.333003] br_handle_frame+0x180/0x480
[ 1579.336935] __netif_receive_skb_core.constprop.0+0x540/0xf40
[ 1579.342682] __netif_receive_skb_one_core+0x28/0x50
[ 1579.347561] process_backlog+0x98/0x1e0
[ 1579.351398] __napi_poll+0x34/0x1c4
[ 1579.354887] net_rx_action+0x178/0x330
[ 1579.358638] handle_softirqs+0x108/0x2d4
[ 1579.362560] __do_softirq+0x10/0x18
[ 1579.366051] ____do_softirq+0xc/0x20
[ 1579.369627] call_on_irq_stack+0x30/0x4c
[ 1579.373550] do_softirq_own_stack+0x18/0x20
[ 1579.377734] do_softirq+0x4c/0x60
[ 1579.381050] __local_bh_enable_ip+0x88/0x98
[ 1579.385234] napi_threaded_poll_loop+0x188/0x21c
[ 1579.389853] napi_threaded_poll+0x70/0x80
[ 1579.393863] kthread+0xd8/0xdc
[ 1579.396918] ret_from_fork+0x10/0x20
[ 1579.400499] Code: 88dffc22 3707ffc2 f9406663 f9406684 (f81f0064)
[ 1579.406589] ---[ end trace 0000000000000000 ]---
[ 1579.411209] Kernel panic - not syncing: Oops: Fatal exception in interrupt
[ 1579.418083] SMP: stopping secondary CPUs
[ 1579.422012] Kernel Offset: disabled
Fix the issue reallocating the skb headroom if necessary in neigh_hh_bridge routine.
Fixes: e179e6322ac33 ("netfilter: bridge-netfilter: Fix MAC header handling with IP DNAT")
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/neighbour.h | 8 ++++++--
net/bridge/br_netfilter_hooks.c | 6 +++++-
2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index cb5f835a5d61..0272d0f0e89d 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -476,11 +476,15 @@ static inline int neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
static inline int neigh_hh_bridge(struct hh_cache *hh, struct sk_buff *skb)
{
- unsigned int seq, hh_alen;
+ unsigned int seq, hh_alen = HH_DATA_ALIGN(ETH_HLEN);
+ int err;
+
+ err = skb_cow_head(skb, hh_alen);
+ if (err)
+ return err;
do {
seq = read_seqbegin(&hh->hh_lock);
- hh_alen = HH_DATA_ALIGN(ETH_HLEN);
memcpy(skb->data - hh_alen, hh->hh_data, ETH_ALEN + hh_alen - ETH_HLEN);
} while (read_seqretry(&hh->hh_lock, seq));
return 0;
diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
index 5ad3f3ef4ca7..c550907b92dd 100644
--- a/net/bridge/br_netfilter_hooks.c
+++ b/net/bridge/br_netfilter_hooks.c
@@ -296,7 +296,11 @@ int br_nf_pre_routing_finish_bridge(struct net *net, struct sock *sk, struct sk_
goto free_skb;
}
- neigh_hh_bridge(&neigh->hh, skb);
+ if (neigh_hh_bridge(&neigh->hh, skb)) {
+ neigh_release(neigh);
+ goto free_skb;
+ }
+
skb->dev = br_indev;
ret = br_handle_frame_finish(net, sk, skb);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 012/337] net: airoha: Fix register index for Tx-fwd counter configuration
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (9 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 011/337] netfilter: br_netfilter: Reallocate headroom if necessary in neigh_hh_bridge() Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 013/337] net: mpls: initialize rtm_tos in mpls_getroute() Greg Kroah-Hartman
` (332 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Wayen.Yan, Lorenzo Bianconi,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wayen.Yan <win847@gmail.com>
[ Upstream commit 1402ecccf5630a0b7fa4749d7d2e72abc3f3d73d ]
In airoha_qdma_init_qos_stats(), the Tx-fwd counter configuration
register uses the same index (i << 1) as the Tx-cpu counter, which
overwrites the Tx-cpu configuration. The Tx-fwd counter value register
correctly uses (i << 1) + 1, so the configuration register should use
the same index.
Fix the REG_CNTR_CFG index from (i << 1) to ((i << 1) + 1) so that
the Tx-fwd counter is properly configured instead of clobbering the
Tx-cpu counter config.
Fixes: 20bf7d07c956 ("net: airoha: Add sched ETS offload support")
Signed-off-by: Wayen.Yan <win847@gmail.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/6a2b40e7.4dd82583.3a5c46.e566@mx.google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/airoha/airoha_eth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/airoha/airoha_eth.c b/drivers/net/ethernet/airoha/airoha_eth.c
index 58e5791e9cd4..9ebc9788ded7 100644
--- a/drivers/net/ethernet/airoha/airoha_eth.c
+++ b/drivers/net/ethernet/airoha/airoha_eth.c
@@ -2022,7 +2022,7 @@ static void airoha_qdma_init_qos_stats(struct airoha_qdma *qdma)
FIELD_PREP(CNTR_CHAN_MASK, i));
/* Tx-fwd transferred count */
airoha_qdma_wr(qdma, REG_CNTR_VAL((i << 1) + 1), 0);
- airoha_qdma_wr(qdma, REG_CNTR_CFG(i << 1),
+ airoha_qdma_wr(qdma, REG_CNTR_CFG((i << 1) + 1),
CNTR_EN_MASK | CNTR_ALL_QUEUE_EN_MASK |
CNTR_ALL_DSCP_RING_EN_MASK |
FIELD_PREP(CNTR_SRC_MASK, 1) |
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 013/337] net: mpls: initialize rtm_tos in mpls_getroute()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (10 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 012/337] net: airoha: Fix register index for Tx-fwd counter configuration Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 014/337] HID: logitech-dj: Standardise hid_report_enum variable nomenclature Greg Kroah-Hartman
` (331 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Yehyeong Lee, Paolo Abeni,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yehyeong Lee <yhlee@isslab.korea.ac.kr>
[ Upstream commit 295dd295e2137e10e9a5b1891d97e0f08de76f03 ]
mpls_getroute() builds the RTM_NEWROUTE reply to an RTM_GETROUTE
request by filling a struct rtmsg allocated from an skb whose data
area is not zeroed (alloc_skb(NLMSG_GOODSIZE, ...)). It sets every
field of the header except rtm_tos:
r = nlmsg_data(nlh);
r->rtm_family = AF_MPLS;
r->rtm_dst_len = 20;
r->rtm_src_len = 0;
r->rtm_table = RT_TABLE_MAIN;
r->rtm_type = RTN_UNICAST;
r->rtm_scope = RT_SCOPE_UNIVERSE;
r->rtm_protocol = rt->rt_protocol;
r->rtm_flags = 0;
struct rtmsg has no padding, so the one uninitialised byte rtm_tos
(offset 3) is copied straight to user space on recvmsg(), leaking a
byte of uninitialised heap memory. This is in contrast to
mpls_dump_route(), which fills the very same header and does set
rtm_tos = 0.
Initialize rtm_tos to 0, matching mpls_dump_route().
Reproduced with KMSAN by adding an MPLS route and issuing a
non-RTM_F_FIB_MATCH RTM_GETROUTE for its label:
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x36c/0x33f0
_copy_to_iter+0x36c/0x33f0
__skb_datagram_iter+0x196/0x12c0
skb_copy_datagram_iter+0x5b/0x210
netlink_recvmsg+0x37b/0xef0
...
Uninit was created at:
__alloc_skb+0x8ca/0x10e0
mpls_getroute+0x1280/0x3a40
rtnetlink_rcv_msg+0x1138/0x15a0
...
Byte 19 of 64 is uninitialized
(byte 19 = nlmsghdr(16) + rtmsg offset 3 = rtm_tos)
Fixes: 397fc9e5cefe ("mpls: route get support")
Signed-off-by: Yehyeong Lee <yhlee@isslab.korea.ac.kr>
Link: https://patch.msgid.link/20260723010830.289917-1-yhlee@isslab.korea.ac.kr
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mpls/af_mpls.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index 98816e51e01a..0379540d601a 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -2468,6 +2468,7 @@ static int mpls_getroute(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
r->rtm_family = AF_MPLS;
r->rtm_dst_len = 20;
r->rtm_src_len = 0;
+ r->rtm_tos = 0;
r->rtm_table = RT_TABLE_MAIN;
r->rtm_type = RTN_UNICAST;
r->rtm_scope = RT_SCOPE_UNIVERSE;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 014/337] HID: logitech-dj: Standardise hid_report_enum variable nomenclature
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (11 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 013/337] net: mpls: initialize rtm_tos in mpls_getroute() Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 015/337] HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write Greg Kroah-Hartman
` (330 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Lee Jones, Jiri Kosina, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lee Jones <lee@kernel.org>
[ Upstream commit a940aee176437046598dfc786b719bd96db3c74c ]
Since we will need to differentiate between the two report_enum types
soon, let's unify the naming conventions now to save confusion and/or
unnecessary/unrelated changes in upcoming commits.
{input,output}_report_enum is used in other places to let's conform.
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hid/hid-logitech-dj.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index 3b5412541c925..d6fb7015f0d77 100644
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -1749,7 +1749,7 @@ static int logi_dj_raw_event(struct hid_device *hdev,
static int logi_dj_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
- struct hid_report_enum *rep_enum;
+ struct hid_report_enum *input_report_enum;
struct hid_report *rep;
struct dj_receiver_dev *djrcv_dev;
struct usb_interface *intf;
@@ -1793,10 +1793,10 @@ static int logi_dj_probe(struct hid_device *hdev,
}
}
- rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
+ input_report_enum = &hdev->report_enum[HID_INPUT_REPORT];
/* no input reports, bail out */
- if (list_empty(&rep_enum->report_list))
+ if (list_empty(&input_report_enum->report_list))
return -ENODEV;
/*
@@ -1804,7 +1804,7 @@ static int logi_dj_probe(struct hid_device *hdev,
* Note: we should theoretically check for HID++ and DJ
* collections, but this will do.
*/
- list_for_each_entry(rep, &rep_enum->report_list, list) {
+ list_for_each_entry(rep, &input_report_enum->report_list, list) {
if (rep->application == 0xff000001)
has_hidpp = true;
}
@@ -1817,7 +1817,7 @@ static int logi_dj_probe(struct hid_device *hdev,
return -ENODEV;
/* get the current application attached to the node */
- rep = list_first_entry(&rep_enum->report_list, struct hid_report, list);
+ rep = list_first_entry(&input_report_enum->report_list, struct hid_report, list);
djrcv_dev = dj_get_receiver_dev(hdev, id->driver_data,
rep->application, has_hidpp);
if (!djrcv_dev) {
@@ -1825,7 +1825,7 @@ static int logi_dj_probe(struct hid_device *hdev,
return -ENOMEM;
}
- if (!rep_enum->numbered)
+ if (!input_report_enum->numbered)
djrcv_dev->unnumbered_application = rep->application;
/* Starts the usb device and connects to upper interfaces hiddev and
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 015/337] HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (12 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 014/337] HID: logitech-dj: Standardise hid_report_enum variable nomenclature Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 016/337] HID: logitech-dj: fix wrong detection of bad DJ_SHORT output report Greg Kroah-Hartman
` (329 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Lee Jones, Jiri Kosina, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lee Jones <lee@kernel.org>
[ Upstream commit b6a57912854e7ea36f3b270032661140cc4209cd ]
logi_dj_recv_send_report() assumes that all incoming REPORT_ID_DJ_SHORT
reports are 14 Bytes (DJREPORT_SHORT_LENGTH - 1) long. It uses that
assumption to load the associated field's 'value' array with 14 Bytes of
data. However, if a malicious user only sends say 1 Byte of data,
'report_count' will be 1 and only 1 Byte of memory will be allocated to
the 'value' Byte array. When we come to populate 'value[1-13]' we will
experience an OOB write.
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hid/hid-logitech-dj.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index d6fb7015f0d77..3a37d61616293 100644
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -1750,6 +1750,7 @@ static int logi_dj_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
struct hid_report_enum *input_report_enum;
+ struct hid_report_enum *output_report_enum;
struct hid_report *rep;
struct dj_receiver_dev *djrcv_dev;
struct usb_interface *intf;
@@ -1793,6 +1794,15 @@ static int logi_dj_probe(struct hid_device *hdev,
}
}
+ output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
+ rep = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT];
+
+ if (rep->maxfield < 1 || rep->field[0]->report_count != DJREPORT_SHORT_LENGTH - 1) {
+ hid_err(hdev, "Expected size of DJ short report is %d, but got %d",
+ DJREPORT_SHORT_LENGTH - 1, rep->field[0]->report_count);
+ return -EINVAL;
+ }
+
input_report_enum = &hdev->report_enum[HID_INPUT_REPORT];
/* no input reports, bail out */
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 016/337] HID: logitech-dj: fix wrong detection of bad DJ_SHORT output report
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (13 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 015/337] HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 017/337] bpf: Reset register bounds before narrowing retval range in check_mem_access() Greg Kroah-Hartman
` (328 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Benjamin Tissoires, Jiri Kosina,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Tissoires <bentiss@kernel.org>
[ Upstream commit 8b9a097eb2fc37b486afd81388c693bf3ab44466 ]
commit b6a57912854e ("HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT
related user initiated OOB write") assumed that all HID devices attached
to the logitech-dj driver was having an output report of DJ_SHORT.
However, on the receiver itself, we have 2 other HID device we attach
here: the mouse emulation and the keyboard emulation. For those devices
the value of rep is NULL and we are triggered a segfault here.
This is doubly required because logitech-dj also handles non DJ devices
that might not have the DJ collection.
Fixes: b6a57912854e ("HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write")
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hid/hid-logitech-dj.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index 3a37d61616293..f1e923ed9d1c5 100644
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -1797,7 +1797,8 @@ static int logi_dj_probe(struct hid_device *hdev,
output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
rep = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT];
- if (rep->maxfield < 1 || rep->field[0]->report_count != DJREPORT_SHORT_LENGTH - 1) {
+ if (rep && (rep->maxfield < 1 ||
+ rep->field[0]->report_count != DJREPORT_SHORT_LENGTH - 1)) {
hid_err(hdev, "Expected size of DJ short report is %d, but got %d",
DJREPORT_SHORT_LENGTH - 1, rep->field[0]->report_count);
return -EINVAL;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 017/337] bpf: Reset register bounds before narrowing retval range in check_mem_access()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (14 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 016/337] HID: logitech-dj: fix wrong detection of bad DJ_SHORT output report Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 018/337] netconsole: avoid OOB reads, msg is not nul-terminated Greg Kroah-Hartman
` (327 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tristan Madani, Eduard Zingerman,
Alexei Starovoitov, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tristan Madani <tristan@talencesecurity.com>
[ Upstream commit 5e0b273e0a62cc04ec338c7b502797c66c2ed42a ]
When the BPF verifier processes a context load of an LSM hook return
value, it calls __mark_reg_s32_range() to narrow the register to the
hook's valid range. However, __mark_reg_s32_range() intersects the new
range with the register's existing bounds using max_t()/min_t() rather
than replacing them.
If the destination register carries stale bounds from a prior instruction
(e.g. BPF_MOV64_IMM), the intersection can produce a range narrower than
reality. The verifier then believes it knows the register's exact value,
while at runtime the actual hook return value is loaded, creating a
verifier/runtime mismatch that can be used to bypass BPF memory safety
checks.
The else branch already calls mark_reg_unknown() to reset register state
before any narrowing. Apply the same reset in the is_retval path so
stale bounds are cleared before __mark_reg_s32_range() intersects.
Fixes: 5d99e198be27 ("bpf, lsm: Add check for BPF LSM return value")
Cc: stable@vger.kernel.org
Signed-off-by: Tristan Madani <tristan@talencesecurity.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260622230123.3695446-2-tristmd@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/bpf/verifier.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 8c3c4ab989a05..77183b436da5e 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -7234,6 +7234,7 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn
*/
if (reg_type == SCALAR_VALUE) {
if (is_retval && get_func_retval_range(env->prog, &range)) {
+ mark_reg_unknown(env, regs, value_regno);
err = __mark_reg_s32_range(env, regs, value_regno,
range.minval, range.maxval);
if (err)
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 018/337] netconsole: avoid OOB reads, msg is not nul-terminated
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (15 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 017/337] bpf: Reset register bounds before narrowing retval range in check_mem_access() Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 019/337] thunderbolt: Prevent XDomain delayed work use-after-free on disconnect Greg Kroah-Hartman
` (326 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jakub Kicinski, Simon Horman,
Paolo Abeni, Markus Boehme, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jakub Kicinski <kuba@kernel.org>
[ Upstream commit 82aec772fca2223bc5774bd9af486fd95766e578 ]
msg passed to netconsole from the console subsystem is not guaranteed
to be nul-terminated. Before recent
commit 7eab73b18630 ("netconsole: convert to NBCON console infrastructure")
the message would be placed in printk_shared_pbufs, a static global
buffer, so KASAN had harder time catching OOB accesses. Now we see:
printk: console [netcon_ext0] enabled
BUG: KASAN: slab-out-of-bounds in string+0x1f7/0x240
Read of size 1 at addr ffff88813b6d4c00 by task pr/netcon_ext0/594
CPU: 65 UID: 0 PID: 594 Comm: pr/netcon_ext0 Not tainted 6.19.0-11754-g4246fd6547c9
Call Trace:
kasan_report+0xe4/0x120
string+0x1f7/0x240
vsnprintf+0x655/0xba0
scnprintf+0xba/0x120
netconsole_write+0x3fe/0xa10
nbcon_emit_next_record+0x46e/0x860
nbcon_kthread_func+0x623/0x750
Allocated by task 1:
nbcon_alloc+0x1ea/0x450
register_console+0x26b/0xe10
init_netconsole+0xbb0/0xda0
The buggy address belongs to the object at ffff88813b6d4000
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 0 bytes to the right of
allocated 3072-byte region [ffff88813b6d4000, ffff88813b6d4c00)
Fixes: c62c0a17f9b7 ("netconsole: Append kernel version to message")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260219195021.2099699-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
[ mb: adjusted context; in 6.12 the affected code lives in
send_ext_msg_udp() and writes to a static buffer instead of nt->buf ]
Signed-off-by: Markus Boehme <markus.boehme@mailbox.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/netconsole.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 60375bb814a1e..3b76ec3cd49b8 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -1103,7 +1103,8 @@ static void send_ext_msg_udp(struct netconsole_target *nt, const char *msg,
if (msg_len + release_len + userdata_len <= MAX_PRINT_CHUNK) {
/* No fragmentation needed */
if (nt->release) {
- scnprintf(buf, MAX_PRINT_CHUNK, "%s,%s", release, msg);
+ scnprintf(buf, MAX_PRINT_CHUNK, "%s,%.*s", release,
+ msg_len, msg);
msg_len += release_len;
} else {
memcpy(buf, msg, msg_len);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 019/337] thunderbolt: Prevent XDomain delayed work use-after-free on disconnect
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (16 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 018/337] netconsole: avoid OOB reads, msg is not nul-terminated Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 020/337] pinctrl: qcom: Unconditionally mark gpio as wakeup enable Greg Kroah-Hartman
` (325 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Mika Westerberg,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
[ Upstream commit 2c5d2d3c3f70cde2565d7b279b544893a2035842 ]
tb_xdp_handle_request() runs on system_wq and queues
xd->state_work via queue_delayed_work() in three request handlers:
PROPERTIES_CHANGED_REQUEST, UUID_REQUEST (via start_handshake),
and LINK_STATE_CHANGE_REQUEST. Similarly, update_xdomain() queues
xd->properties_changed_work when local properties change.
Concurrently, tb_xdomain_remove() calls stop_handshake() which does
cancel_delayed_work_sync() on both delayed works. Later,
tb_xdomain_unregister() calls device_unregister() which eventually
frees the xdomain. Since commit 559c1e1e0134 ("thunderbolt: Run
tb_xdp_handle_request() in system workqueue") moved the request
handler off tb->wq, the handler and the remove path are no longer
serialized. If queue_delayed_work() executes after
cancel_delayed_work_sync() but before the xdomain is freed, the
delayed work fires on a freed object.
Add xd->removing that tb_xdomain_remove() sets under xd->lock
before calling stop_handshake(). Each external queue site holds
the same lock and checks removing before calling
queue_delayed_work(). This provides the mutual exclusion needed:
either the queue site acquires the lock first and queues work that
the subsequent cancel will see, or the remove path acquires the
lock first and the queue site observes removing == true and skips
the queue.
Fixes: 559c1e1e0134 ("thunderbolt: Run tb_xdp_handle_request() in system workqueue")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-7
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/thunderbolt/xdomain.c | 40 ++++++++++++++++++++++++++---------
include/linux/thunderbolt.h | 3 +++
2 files changed, 33 insertions(+), 10 deletions(-)
diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c
index 06357073f4ab8..ffe7ce0737491 100644
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -783,9 +783,13 @@ static void tb_xdp_handle_request(struct work_struct *work)
* the xdomain related to this connection as well in
* case there is a change in services it offers.
*/
- if (xd && device_is_registered(&xd->dev))
- queue_delayed_work(tb->wq, &xd->state_work,
- msecs_to_jiffies(XDOMAIN_SHORT_TIMEOUT));
+ if (xd) {
+ mutex_lock(&xd->lock);
+ if (!xd->removing && device_is_registered(&xd->dev))
+ queue_delayed_work(tb->wq, &xd->state_work,
+ msecs_to_jiffies(XDOMAIN_SHORT_TIMEOUT));
+ mutex_unlock(&xd->lock);
+ }
break;
case UUID_REQUEST_OLD:
@@ -798,8 +802,12 @@ static void tb_xdp_handle_request(struct work_struct *work)
* received UUID request from the remote host.
*/
if (!ret && xd && xd->state == XDOMAIN_STATE_ERROR) {
- dev_dbg(&xd->dev, "restarting handshake\n");
- start_handshake(xd);
+ mutex_lock(&xd->lock);
+ if (!xd->removing) {
+ dev_dbg(&xd->dev, "restarting handshake\n");
+ start_handshake(xd);
+ }
+ mutex_unlock(&xd->lock);
}
break;
@@ -827,9 +835,13 @@ static void tb_xdp_handle_request(struct work_struct *work)
ret = tb_xdp_link_state_change_response(ctl, route,
sequence, 0);
- xd->target_link_width = lsc->tlw;
- queue_delayed_work(tb->wq, &xd->state_work,
- msecs_to_jiffies(XDOMAIN_SHORT_TIMEOUT));
+ mutex_lock(&xd->lock);
+ if (!xd->removing) {
+ xd->target_link_width = lsc->tlw;
+ queue_delayed_work(tb->wq, &xd->state_work,
+ msecs_to_jiffies(XDOMAIN_SHORT_TIMEOUT));
+ }
+ mutex_unlock(&xd->lock);
} else {
tb_xdp_error_response(ctl, route, sequence,
ERROR_NOT_READY);
@@ -2068,6 +2080,10 @@ void tb_xdomain_remove(struct tb_xdomain *xd)
{
tb_xdomain_debugfs_remove(xd);
+ mutex_lock(&xd->lock);
+ xd->removing = true;
+ mutex_unlock(&xd->lock);
+
stop_handshake(xd);
device_for_each_child_reverse(&xd->dev, xd, unregister_service);
@@ -2464,8 +2480,12 @@ static int update_xdomain(struct device *dev, void *data)
xd = tb_to_xdomain(dev);
if (xd) {
- queue_delayed_work(xd->tb->wq, &xd->properties_changed_work,
- msecs_to_jiffies(50));
+ mutex_lock(&xd->lock);
+ if (!xd->removing)
+ queue_delayed_work(xd->tb->wq,
+ &xd->properties_changed_work,
+ msecs_to_jiffies(50));
+ mutex_unlock(&xd->lock);
}
return 0;
diff --git a/include/linux/thunderbolt.h b/include/linux/thunderbolt.h
index 7d902d8c054b2..4ef9c43026569 100644
--- a/include/linux/thunderbolt.h
+++ b/include/linux/thunderbolt.h
@@ -202,6 +202,8 @@ enum tb_link_width {
* @link_width: Width of the downstream facing link
* @link_usb4: Downstream link is USB4
* @is_unplugged: The XDomain is unplugged
+ * @removing: Set by tb_xdomain_remove() under @lock to prevent
+ * concurrent delayed work queueing
* @needs_uuid: If the XDomain does not have @remote_uuid it will be
* queried first
* @service_ids: Used to generate IDs for the services
@@ -250,6 +252,7 @@ struct tb_xdomain {
enum tb_link_width link_width;
bool link_usb4;
bool is_unplugged;
+ bool removing;
bool needs_uuid;
struct ida service_ids;
struct ida in_hopids;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 020/337] pinctrl: qcom: Unconditionally mark gpio as wakeup enable
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (17 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 019/337] thunderbolt: Prevent XDomain delayed work use-after-free on disconnect Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 021/337] pinctrl: qcom: sc8280xp: Add missing wakeup entries for GPIO143/151 Greg Kroah-Hartman
` (324 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sneh Mankad, Maulik Shah,
Linus Walleij, Konrad Dybcio, Bartosz Golaszewski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sneh Mankad <sneh.mankad@oss.qualcomm.com>
[ Upstream commit 859e02a369ab328a77dfcabf59562100e55f9c5c ]
GPIO interrupts that are wakeup capable need to be forwarded to wakeup
capable parent irqchip. This is done via writing to it's wakeup_enable bit.
Currently the bit is set only for PDC irqchip by checking skip_wake_irqs.
skip_wake_irqs is set to differentiate between parent irqchips MPM and
PDC. It is set when the parent irqchip is PDC to inform pinctrl about
skipping the IRQ setting up at TLMM.
However, the functionality to forward GPIO interrupts during SoC low
power mode is needed regardless of which parent irqchip it is.
Without the functionality it is impossible for MPM irqchip to detect the
GPIO interrupt during SoC low power mode since for MPM irqchip the
skip_wake_irqs is always false.
Remove skip_wake_irqs condition when setting wakeup enable bit to allow
forwarding GPIO interrupts for SoCs using MPM irqchip too.
Fixes: 76b446f5b86e ("pinctrl: qcom: handle intr_target_reg wakeup_present/enable bits")
Signed-off-by: Sneh Mankad <sneh.mankad@oss.qualcomm.com>
Reviewed-by: Maulik Shah <maulik.shah@oss.qualcomm.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://patch.msgid.link/20260616-enable_wakeup_capable_gpios-v3-1-fb59647d89cb@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/qcom/pinctrl-msm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index 27eb585bf42df..994f46c4c3b6b 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -1247,12 +1247,12 @@ static int msm_gpio_irq_reqres(struct irq_data *d)
/*
* If the wakeup_enable bit is present and marked as available for the
* requested GPIO, it should be enabled when the GPIO is marked as
- * wake irq in order to allow the interrupt event to be transfered to
- * the PDC HW.
+ * wake irq in order to allow the interrupt event to be transferred to
+ * the PDC/MPM HW.
* While the name implies only the wakeup event, it's also required for
* the interrupt event.
*/
- if (test_bit(d->hwirq, pctrl->skip_wake_irqs) && g->intr_wakeup_present_bit) {
+ if (g->intr_wakeup_present_bit) {
u32 intr_cfg;
raw_spin_lock_irqsave(&pctrl->lock, flags);
@@ -1280,7 +1280,7 @@ static void msm_gpio_irq_relres(struct irq_data *d)
unsigned long flags;
/* Disable the wakeup_enable bit if it has been set in msm_gpio_irq_reqres() */
- if (test_bit(d->hwirq, pctrl->skip_wake_irqs) && g->intr_wakeup_present_bit) {
+ if (g->intr_wakeup_present_bit) {
u32 intr_cfg;
raw_spin_lock_irqsave(&pctrl->lock, flags);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 021/337] pinctrl: qcom: sc8280xp: Add missing wakeup entries for GPIO143/151
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (18 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 020/337] pinctrl: qcom: Unconditionally mark gpio as wakeup enable Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 022/337] dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA Greg Kroah-Hartman
` (323 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Konrad Dybcio, Bartosz Golaszewski,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
[ Upstream commit 437a8d2aa1aa442c4a176fdf4700a9b3bb0c8794 ]
Pins 143 and 151 were not included in the PDC wakeup map. They are
normally used for PCIe2A and PCIe3a PERST# respectively, so they're
unlikely to be excercised in practice, but still add them for the sake
of completeness.
Fixes: c0e4c71a9e7c ("pinctrl: qcom: Introduce sc8280xp TLMM driver")
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://patch.msgid.link/20260626-topic-8280_pinctrl_wakeup-v1-1-2ccb267148f5@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/qcom/pinctrl-sc8280xp.c | 21 +++++++++++----------
1 file changed, 11 insertions(+), 10 deletions(-)
diff --git a/drivers/pinctrl/qcom/pinctrl-sc8280xp.c b/drivers/pinctrl/qcom/pinctrl-sc8280xp.c
index 4b1c49697698d..67945ce867fa1 100644
--- a/drivers/pinctrl/qcom/pinctrl-sc8280xp.c
+++ b/drivers/pinctrl/qcom/pinctrl-sc8280xp.c
@@ -1884,16 +1884,17 @@ static const struct msm_gpio_wakeirq_map sc8280xp_pdc_map[] = {
{ 126, 200 }, { 127, 225 }, { 128, 262 }, { 129, 201 },
{ 130, 209 }, { 131, 173 }, { 132, 202 }, { 136, 210 },
{ 138, 171 }, { 139, 226 }, { 140, 227 }, { 142, 228 },
- { 144, 229 }, { 145, 230 }, { 146, 231 }, { 148, 232 },
- { 149, 233 }, { 150, 234 }, { 152, 235 }, { 154, 212 },
- { 157, 213 }, { 161, 219 }, { 170, 236 }, { 171, 221 },
- { 174, 222 }, { 175, 237 }, { 176, 223 }, { 177, 170 },
- { 180, 238 }, { 181, 239 }, { 182, 240 }, { 183, 241 },
- { 184, 242 }, { 185, 243 }, { 190, 178 }, { 193, 184 },
- { 196, 185 }, { 198, 186 }, { 200, 174 }, { 201, 175 },
- { 205, 176 }, { 206, 177 }, { 208, 187 }, { 210, 198 },
- { 211, 199 }, { 212, 204 }, { 215, 205 }, { 220, 188 },
- { 221, 194 }, { 223, 195 }, { 225, 196 }, { 227, 197 },
+ { 143, 261 }, { 144, 229 }, { 145, 230 }, { 146, 231 },
+ { 148, 232 }, { 149, 233 }, { 150, 234 }, { 151, 264 },
+ { 152, 235 }, { 154, 212 }, { 157, 213 }, { 161, 219 },
+ { 170, 236 }, { 171, 221 }, { 174, 222 }, { 175, 237 },
+ { 176, 223 }, { 177, 170 }, { 180, 238 }, { 181, 239 },
+ { 182, 240 }, { 183, 241 }, { 184, 242 }, { 185, 243 },
+ { 190, 178 }, { 193, 184 }, { 196, 185 }, { 198, 186 },
+ { 200, 174 }, { 201, 175 }, { 205, 176 }, { 206, 177 },
+ { 208, 187 }, { 210, 198 }, { 211, 199 }, { 212, 204 },
+ { 215, 205 }, { 220, 188 }, { 221, 194 }, { 223, 195 },
+ { 225, 196 }, { 227, 197 },
};
static struct msm_pinctrl_soc_data sc8280xp_pinctrl = {
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 022/337] dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (19 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 021/337] pinctrl: qcom: sc8280xp: Add missing wakeup entries for GPIO143/151 Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 023/337] dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open() Greg Kroah-Hartman
` (322 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Hongling Zeng, Jernej Skrabec,
Frank Li, Frank Li, Vinod Koul, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hongling Zeng <zenghongling@kylinos.cn>
[ Upstream commit ab1150115e68a46b687eb38c1ab92782018c9f2c ]
When terminating DMA transfers, active descriptors are not properly
reclaimed. Only cyclic descriptors were handled, leaving non-cyclic
descriptors and their LLI chains to be permanently leaked.
Fix by using vchan_terminate_vdesc() which handles both cyclic and
non-cyclic descriptors by adding them to desc_terminated queue for
proper cleanup.
Add pchan->desc != pchan->done check to prevent double-adding completed
descriptors, which would corrupt the list.
Fixes: 555859308723 ("dmaengine: sun6i: Add driver for the Allwinner A31 DMA controller")
Signed-off-by: Hongling Zeng <zenghongling@kylinos.cn>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Suggested-by: Frank Li <Frank.li@oss.nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260701045733.33654-1-zenghongling@kylinos.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dma/sun6i-dma.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
index c97027379263d..1f1e21d48ad76 100644
--- a/drivers/dma/sun6i-dma.c
+++ b/drivers/dma/sun6i-dma.c
@@ -934,16 +934,13 @@ static int sun6i_dma_terminate_all(struct dma_chan *chan)
spin_lock_irqsave(&vchan->vc.lock, flags);
- if (vchan->cyclic) {
- vchan->cyclic = false;
- if (pchan && pchan->desc) {
- struct virt_dma_desc *vd = &pchan->desc->vd;
- struct virt_dma_chan *vc = &vchan->vc;
+ if (pchan && pchan->desc && pchan->desc != pchan->done) {
+ struct virt_dma_desc *vd = &pchan->desc->vd;
- list_add_tail(&vd->node, &vc->desc_completed);
- }
+ vchan_terminate_vdesc(vd);
}
+ vchan->cyclic = false;
vchan_get_all_descriptors(&vchan->vc, &head);
if (pchan) {
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 023/337] dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (20 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 022/337] dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 024/337] gpio: sloppy-logic-analyzer: Fix memory leak in gpio_la_poll_probe() Greg Kroah-Hartman
` (321 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuho Choi, Dave Jiang,
Vinicius Costa Gomes, Vinod Koul, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yuho Choi <dbgh9129@gmail.com>
[ Upstream commit ee1d7274102285d78a53161fc705a8d8cd40b066 ]
The failed_dev_add and failed_dev_name paths drop the file-device
reference while wq->wq_lock is still held. If put_device(fdev) drops the
last reference, idxd_file_dev_release() runs synchronously and tries to
take wq->wq_lock again, deadlocking.
Those paths also fall through into the later ctx cleanup labels even
though idxd_file_dev_release() owns that cleanup and frees ctx. This can
make idxd_xa_pasid_remove(ctx) and kfree(ctx) operate on a freed context.
Move idxd_wq_get() before file-device setup can fail, since the release
callback always calls idxd_wq_put(). Then unlock wq->wq_lock before
put_device(fdev) and return directly from the file-device setup failure
path, leaving ctx cleanup to the release callback.
Fixes: e6fd6d7e5f0fe ("dmaengine: idxd: add a device to represent the file opened")
Signed-off-by: Yuho Choi <dbgh9129@gmail.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Link: https://patch.msgid.link/20260525141550.1385581-1-dbgh9129@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dma/idxd/cdev.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c
index 8dcd2331bb1ac..14b322ac6e6c6 100644
--- a/drivers/dma/idxd/cdev.c
+++ b/drivers/dma/idxd/cdev.c
@@ -293,6 +293,7 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp)
fdev->parent = cdev_dev(idxd_cdev);
fdev->bus = &dsa_bus_type;
fdev->type = &idxd_cdev_file_type;
+ idxd_wq_get(wq);
rc = dev_set_name(fdev, "file%d", ctx->id);
if (rc < 0) {
@@ -306,13 +307,14 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp)
goto failed_dev_add;
}
- idxd_wq_get(wq);
mutex_unlock(&wq->wq_lock);
return 0;
failed_dev_add:
failed_dev_name:
+ mutex_unlock(&wq->wq_lock);
put_device(fdev);
+ return rc;
failed_ida:
failed_set_pasid:
if (device_user_pasid_enabled(idxd))
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 024/337] gpio: sloppy-logic-analyzer: Fix memory leak in gpio_la_poll_probe()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (21 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 023/337] dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open() Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 025/337] ata: sata_mv: accept 1 or 2 resources in platform probe Greg Kroah-Hartman
` (320 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Abdun Nihaal, Wolfram Sang,
Bartosz Golaszewski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Abdun Nihaal <nihaal@cse.iitm.ac.in>
[ Upstream commit 7a7baebd9f23ba4f24796775472b2fd00dcd95d9 ]
The memory allocated for priv->blob.data is not freed in the error paths
that follow the fops_buf_size_set() call in gpio_la_poll_probe(), as
well as in the remove function. Fix that by using device managed action
to free the memory on remove.
Fixes: 7828b7bbbf20 ("gpio: add sloppy logic analyzer using polling")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260715075311.527753-1-nihaal@cse.iitm.ac.in
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpio/gpio-sloppy-logic-analyzer.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpio/gpio-sloppy-logic-analyzer.c b/drivers/gpio/gpio-sloppy-logic-analyzer.c
index 59a8f3a5c4e48..9c526aeadeba5 100644
--- a/drivers/gpio/gpio-sloppy-logic-analyzer.c
+++ b/drivers/gpio/gpio-sloppy-logic-analyzer.c
@@ -161,6 +161,13 @@ static int fops_buf_size_get(void *data, u64 *val)
return 0;
}
+static void fops_buf_release(void *data)
+{
+ struct gpio_la_poll_priv *priv = data;
+
+ vfree(priv->blob.data);
+}
+
static int fops_buf_size_set(void *data, u64 val)
{
struct gpio_la_poll_priv *priv = data;
@@ -239,6 +246,9 @@ static int gpio_la_poll_probe(struct platform_device *pdev)
return ret;
fops_buf_size_set(priv, GPIO_LA_DEFAULT_BUF_SIZE);
+ ret = devm_add_action_or_reset(dev, fops_buf_release, priv);
+ if (ret)
+ return ret;
priv->descs = devm_gpiod_get_array(dev, "probe", GPIOD_IN);
if (IS_ERR(priv->descs))
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 025/337] ata: sata_mv: accept 1 or 2 resources in platform probe
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (22 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 024/337] gpio: sloppy-logic-analyzer: Fix memory leak in gpio_la_poll_probe() Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 026/337] ata: libahci_platform: support non-consecutive port numbers Greg Kroah-Hartman
` (319 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Rosen Penev, Damien Le Moal,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rosen Penev <rosenp@gmail.com>
[ Upstream commit ef19a9cf037957fe3a35df8355c76ff0a63a0436 ]
Board files in arch/arm/plat-orion, arch/arm/mach-dove,
arch/arm/mach-mv78xx0 and arch/arm/mach-orion5x still register the
"sata_mv" device with two resources (IORESOURCE_MEM plus IORESOURCE_IRQ).
Those devices are rejected with -EINVAL, so SATA no longer probes on
legacy Marvell Orion/Kirkwood-style boards.
Accept both 1 resource (DT, IRQ fetched via platform_get_irq()) and 2
resources (legacy, IRQ supplied as a second resource) so both probing
paths work.
Fixes: b3b2bec9646e ("ata: sata_mv: Fixes expected number of resources now IRQs are gone")
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/sata_mv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 05c905827dc5c..40fdc422940dd 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -4026,7 +4026,7 @@ static int mv_platform_probe(struct platform_device *pdev)
/*
* Simple resource validation ..
*/
- if (unlikely(pdev->num_resources != 1)) {
+ if (unlikely(pdev->num_resources != 1 && pdev->num_resources != 2)) {
dev_err(&pdev->dev, "invalid number of resources\n");
return -EINVAL;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 026/337] ata: libahci_platform: support non-consecutive port numbers
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (23 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 025/337] ata: sata_mv: accept 1 or 2 resources in platform probe Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 027/337] ahci: Introduce ahci_ignore_port() helper Greg Kroah-Hartman
` (318 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Josua Mayer, Hans de Goede,
Damien Le Moal, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Josua Mayer <josua@solid-run.com>
[ Upstream commit 8c87215dd3a2c814dcffc0bafe8c80c8f98f2574 ]
So far ahci_platform relied on number of child nodes in firmware to
allocate arrays and expected port numbers to start from 0 without holes.
This number of ports is then set in private structure for use when
configuring phys and regulators.
Some platforms may not use every port of an ahci controller.
E.g. SolidRUN CN9130 Clearfog uses only port 1 but not port 0, leading
to the following errors during boot:
[ 1.719476] ahci f2540000.sata: invalid port number 1
[ 1.724562] ahci f2540000.sata: No port enabled
Update all accessesors of ahci_host_priv phys and target_pwrs arrays to
support holes. Access is gated by hpriv->mask_port_map which has a bit
set for each enabled port.
Update ahci_platform_get_resources to ignore holes in the port numbers
and enable ports defined in firmware by their reg property only.
When firmware does not define children it is assumed that there is
exactly one port, using index 0.
Signed-off-by: Josua Mayer <josua@solid-run.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Stable-dep-of: 4d99a91574c4 ("ata: ahci_ceva: fix error paths in ceva_ahci_platform_enable_resources()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/ahci_brcm.c | 3 +++
drivers/ata/ahci_ceva.c | 6 +++++
drivers/ata/libahci_platform.c | 40 +++++++++++++++++++++++++++++-----
3 files changed, 43 insertions(+), 6 deletions(-)
diff --git a/drivers/ata/ahci_brcm.c b/drivers/ata/ahci_brcm.c
index 2f16524c25262..60505e1e247ab 100644
--- a/drivers/ata/ahci_brcm.c
+++ b/drivers/ata/ahci_brcm.c
@@ -288,6 +288,9 @@ static unsigned int brcm_ahci_read_id(struct ata_device *dev,
/* Re-initialize and calibrate the PHY */
for (i = 0; i < hpriv->nports; i++) {
+ if (!(hpriv->mask_port_map & (1 << i)))
+ continue;
+
rc = phy_init(hpriv->phys[i]);
if (rc)
goto disable_phys;
diff --git a/drivers/ata/ahci_ceva.c b/drivers/ata/ahci_ceva.c
index 11a2c199a7c24..6e115da23d3f0 100644
--- a/drivers/ata/ahci_ceva.c
+++ b/drivers/ata/ahci_ceva.c
@@ -206,6 +206,9 @@ static int ceva_ahci_platform_enable_resources(struct ahci_host_priv *hpriv)
goto disable_clks;
for (i = 0; i < hpriv->nports; i++) {
+ if (!(hpriv->mask_port_map & (1 << i)))
+ continue;
+
rc = phy_init(hpriv->phys[i]);
if (rc)
goto disable_rsts;
@@ -215,6 +218,9 @@ static int ceva_ahci_platform_enable_resources(struct ahci_host_priv *hpriv)
ahci_platform_deassert_rsts(hpriv);
for (i = 0; i < hpriv->nports; i++) {
+ if (!(hpriv->mask_port_map & (1 << i)))
+ continue;
+
rc = phy_power_on(hpriv->phys[i]);
if (rc) {
phy_exit(hpriv->phys[i]);
diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
index 7a8064520a35b..b68777841f7a5 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -49,6 +49,9 @@ int ahci_platform_enable_phys(struct ahci_host_priv *hpriv)
int rc, i;
for (i = 0; i < hpriv->nports; i++) {
+ if (!(hpriv->mask_port_map & (1 << i)))
+ continue;
+
rc = phy_init(hpriv->phys[i]);
if (rc)
goto disable_phys;
@@ -70,6 +73,9 @@ int ahci_platform_enable_phys(struct ahci_host_priv *hpriv)
disable_phys:
while (--i >= 0) {
+ if (!(hpriv->mask_port_map & (1 << i)))
+ continue;
+
phy_power_off(hpriv->phys[i]);
phy_exit(hpriv->phys[i]);
}
@@ -88,6 +94,9 @@ void ahci_platform_disable_phys(struct ahci_host_priv *hpriv)
int i;
for (i = 0; i < hpriv->nports; i++) {
+ if (!(hpriv->mask_port_map & (1 << i)))
+ continue;
+
phy_power_off(hpriv->phys[i]);
phy_exit(hpriv->phys[i]);
}
@@ -432,6 +441,20 @@ static int ahci_platform_get_firmware(struct ahci_host_priv *hpriv,
return 0;
}
+static u32 ahci_platform_find_max_port_id(struct device *dev)
+{
+ u32 max_port = 0;
+
+ for_each_child_of_node_scoped(dev->of_node, child) {
+ u32 port;
+
+ if (!of_property_read_u32(child, "reg", &port))
+ max_port = max(max_port, port);
+ }
+
+ return max_port;
+}
+
/**
* ahci_platform_get_resources - Get platform resources
* @pdev: platform device to get resources for
@@ -458,6 +481,7 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
struct device *dev = &pdev->dev;
struct ahci_host_priv *hpriv;
u32 mask_port_map = 0;
+ u32 max_port;
if (!devres_open_group(dev, NULL, GFP_KERNEL))
return ERR_PTR(-ENOMEM);
@@ -549,15 +573,17 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
goto err_out;
}
+ /* find maximum port id for allocating structures */
+ max_port = ahci_platform_find_max_port_id(dev);
/*
- * If no sub-node was found, we still need to set nports to
- * one in order to be able to use the
+ * Set nports according to maximum port id. Clamp at
+ * AHCI_MAX_PORTS, warning message for invalid port id
+ * is generated later.
+ * When DT has no sub-nodes max_port is 0, nports is 1,
+ * in order to be able to use the
* ahci_platform_[en|dis]able_[phys|regulators] functions.
*/
- if (child_nodes)
- hpriv->nports = child_nodes;
- else
- hpriv->nports = 1;
+ hpriv->nports = min(AHCI_MAX_PORTS, max_port + 1);
hpriv->phys = devm_kcalloc(dev, hpriv->nports, sizeof(*hpriv->phys), GFP_KERNEL);
if (!hpriv->phys) {
@@ -625,6 +651,8 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
* If no sub-node was found, keep this for device tree
* compatibility
*/
+ hpriv->mask_port_map |= BIT(0);
+
rc = ahci_platform_get_phy(hpriv, 0, dev, dev->of_node);
if (rc)
goto err_out;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 027/337] ahci: Introduce ahci_ignore_port() helper
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (24 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 026/337] ata: libahci_platform: support non-consecutive port numbers Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 028/337] ata: ahci_ceva: fix error paths in ceva_ahci_platform_enable_resources() Greg Kroah-Hartman
` (317 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Damien Le Moal, Niklas Cassel,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Damien Le Moal <dlemoal@kernel.org>
[ Upstream commit c9b5be909e6595547ed5d45aef39fd65948aa342 ]
libahci and AHCI drivers may ignore some ports if the port is invalid
(its ID does not correspond to a valid physical port) or if the user
explicitly requested the port to be ignored with the mask_port_map
ahci module parameter. Such port that shall be ignored can be identified
by checking that the bit corresponding to the port ID is not set in the
mask_port_map field of struct ahci_host_priv. E.g. code such as:
"if (!(hpriv->mask_port_map & (1 << portid)))".
Replace all direct use of the mask_port_map field to detect such port
with the new helper inline function ahci_ignore_port() to make the code
more readable/easier to understand.
The comment describing the mask_port_map field of struct ahci_host_priv
is also updated to be more accurate.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Stable-dep-of: 4d99a91574c4 ("ata: ahci_ceva: fix error paths in ceva_ahci_platform_enable_resources()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/ahci.h | 13 ++++++++++++-
drivers/ata/ahci_brcm.c | 2 +-
drivers/ata/ahci_ceva.c | 4 ++--
drivers/ata/libahci_platform.c | 6 +++---
4 files changed, 18 insertions(+), 7 deletions(-)
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 10a5fe02f0a45..5814245e43ceb 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -329,7 +329,7 @@ struct ahci_port_priv {
struct ahci_host_priv {
/* Input fields */
unsigned int flags; /* AHCI_HFLAG_* */
- u32 mask_port_map; /* mask out particular bits */
+ u32 mask_port_map; /* Mask of valid ports */
void __iomem * mmio; /* bus-independent mem map */
u32 cap; /* cap to use */
@@ -380,6 +380,17 @@ struct ahci_host_priv {
int port);
};
+/*
+ * Return true if a port should be ignored because it is excluded from
+ * the host port map.
+ */
+static inline bool ahci_ignore_port(struct ahci_host_priv *hpriv,
+ unsigned int portid)
+{
+ return portid >= hpriv->nports ||
+ !(hpriv->mask_port_map & (1 << portid));
+}
+
extern int ahci_ignore_sss;
extern const struct attribute_group *ahci_shost_groups[];
diff --git a/drivers/ata/ahci_brcm.c b/drivers/ata/ahci_brcm.c
index 60505e1e247ab..12bb0c2f914e7 100644
--- a/drivers/ata/ahci_brcm.c
+++ b/drivers/ata/ahci_brcm.c
@@ -288,7 +288,7 @@ static unsigned int brcm_ahci_read_id(struct ata_device *dev,
/* Re-initialize and calibrate the PHY */
for (i = 0; i < hpriv->nports; i++) {
- if (!(hpriv->mask_port_map & (1 << i)))
+ if (ahci_ignore_port(hpriv, i))
continue;
rc = phy_init(hpriv->phys[i]);
diff --git a/drivers/ata/ahci_ceva.c b/drivers/ata/ahci_ceva.c
index 6e115da23d3f0..93275b1b48898 100644
--- a/drivers/ata/ahci_ceva.c
+++ b/drivers/ata/ahci_ceva.c
@@ -206,7 +206,7 @@ static int ceva_ahci_platform_enable_resources(struct ahci_host_priv *hpriv)
goto disable_clks;
for (i = 0; i < hpriv->nports; i++) {
- if (!(hpriv->mask_port_map & (1 << i)))
+ if (ahci_ignore_port(hpriv, i))
continue;
rc = phy_init(hpriv->phys[i]);
@@ -218,7 +218,7 @@ static int ceva_ahci_platform_enable_resources(struct ahci_host_priv *hpriv)
ahci_platform_deassert_rsts(hpriv);
for (i = 0; i < hpriv->nports; i++) {
- if (!(hpriv->mask_port_map & (1 << i)))
+ if (ahci_ignore_port(hpriv, i))
continue;
rc = phy_power_on(hpriv->phys[i]);
diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
index b68777841f7a5..53b2c7719dc51 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -49,7 +49,7 @@ int ahci_platform_enable_phys(struct ahci_host_priv *hpriv)
int rc, i;
for (i = 0; i < hpriv->nports; i++) {
- if (!(hpriv->mask_port_map & (1 << i)))
+ if (ahci_ignore_port(hpriv, i))
continue;
rc = phy_init(hpriv->phys[i]);
@@ -73,7 +73,7 @@ int ahci_platform_enable_phys(struct ahci_host_priv *hpriv)
disable_phys:
while (--i >= 0) {
- if (!(hpriv->mask_port_map & (1 << i)))
+ if (ahci_ignore_port(hpriv, i))
continue;
phy_power_off(hpriv->phys[i]);
@@ -94,7 +94,7 @@ void ahci_platform_disable_phys(struct ahci_host_priv *hpriv)
int i;
for (i = 0; i < hpriv->nports; i++) {
- if (!(hpriv->mask_port_map & (1 << i)))
+ if (ahci_ignore_port(hpriv, i))
continue;
phy_power_off(hpriv->phys[i]);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 028/337] ata: ahci_ceva: fix error paths in ceva_ahci_platform_enable_resources()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (25 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 027/337] ahci: Introduce ahci_ignore_port() helper Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 029/337] ASoC: max98095: fix missing IS_ERR() before PTR_ERR() on mclk lookup Greg Kroah-Hartman
` (316 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Radhey Shyam Pandey, Damien Le Moal,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
[ Upstream commit 4d99a91574c420decab56cc880fad0dc15b8a7a3 ]
On phy_init() failure the error path fallsthrough to disable_rsts, which
deasserts the controller reset and then enters disable_phys calling
phy_power_off() on PHYs that were never powered on. That corrupts the PHY
power_count and triggers an extra runtime PM put.
Use a separate exit_phys path that unwinds with phy_exit() only and falls
through to disable_clks while the controller remains in reset. Reserve
phy_power_off() for the phy_power_on() failure path only, and skip
masked-out ports in both unwind loops.
On phy_power_on() failure re-assert the controller reset before disabling
clocks and regulators, matching the teardown order used by
ahci_platform_enable_resources() and ahci_platform_disable_resources().
Fixes: 26c8404e162b ("ata: ahci_ceva: fix error handling for Xilinx GT PHY support")
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/ahci_ceva.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/ata/ahci_ceva.c b/drivers/ata/ahci_ceva.c
index 93275b1b48898..b2918ad8e7e05 100644
--- a/drivers/ata/ahci_ceva.c
+++ b/drivers/ata/ahci_ceva.c
@@ -211,7 +211,7 @@ static int ceva_ahci_platform_enable_resources(struct ahci_host_priv *hpriv)
rc = phy_init(hpriv->phys[i]);
if (rc)
- goto disable_rsts;
+ goto exit_phys;
}
/* De-assert the controller reset */
@@ -230,14 +230,24 @@ static int ceva_ahci_platform_enable_resources(struct ahci_host_priv *hpriv)
return 0;
-disable_rsts:
- ahci_platform_deassert_rsts(hpriv);
-
disable_phys:
while (--i >= 0) {
+ if (ahci_ignore_port(hpriv, i))
+ continue;
+
phy_power_off(hpriv->phys[i]);
phy_exit(hpriv->phys[i]);
}
+ ahci_platform_assert_rsts(hpriv);
+ goto disable_clks;
+
+exit_phys:
+ while (--i >= 0) {
+ if (ahci_ignore_port(hpriv, i))
+ continue;
+
+ phy_exit(hpriv->phys[i]);
+ }
disable_clks:
ahci_platform_disable_clks(hpriv);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 029/337] ASoC: max98095: fix missing IS_ERR() before PTR_ERR() on mclk lookup
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (26 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 028/337] ata: ahci_ceva: fix error paths in ceva_ahci_platform_enable_resources() Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 030/337] ASoC: max98090: " Greg Kroah-Hartman
` (315 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Uday Khare, Mark Brown, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Uday Khare <udaykhare77@gmail.com>
[ Upstream commit 317e21532e6ffa1de026bdbce5ba98e1b70ca5c6 ]
In max98095_probe(), the -EPROBE_DEFER check after devm_clk_get() is
broken due to a missing IS_ERR() guard.
The code intends to return -EPROBE_DEFER only when the clock lookup
fails with that specific error. However, without IS_ERR() the check:
if (PTR_ERR(max98095->mclk) == -EPROBE_DEFER)
is called unconditionally, including when devm_clk_get() succeeds and
returns a valid pointer. Calling PTR_ERR() on a valid pointer
reinterprets its address as a signed long; the result is arbitrary
and is almost never equal to -EPROBE_DEFER, so the check silently
does nothing in the success case. When devm_clk_get() fails with
any error other than -EPROBE_DEFER the check is also skipped, leaving
max98095->mclk holding an error pointer with no indication to the caller.
This means a deferred probe will never actually be triggered for this
device, and any non-EPROBE_DEFER clock error is silently swallowed with
the error pointer left in the mclk field.
Fix this by adding the missing IS_ERR() guard around the PTR_ERR() call,
matching the pattern already used in the sibling max98088 and wm8960
drivers.
Fixes: e3048c3d2be5 ("ASoC: max98095: Add master clock handling")
Signed-off-by: Uday Khare <udaykhare77@gmail.com>
Link: https://patch.msgid.link/20260720103950.14474-1-udaykhare77@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/max98095.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/max98095.c b/sound/soc/codecs/max98095.c
index 7e525d49328d2..3b37f4c4235e6 100644
--- a/sound/soc/codecs/max98095.c
+++ b/sound/soc/codecs/max98095.c
@@ -1984,8 +1984,9 @@ static int max98095_probe(struct snd_soc_component *component)
int ret = 0;
max98095->mclk = devm_clk_get(component->dev, "mclk");
- if (PTR_ERR(max98095->mclk) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
+ if (IS_ERR(max98095->mclk))
+ if (PTR_ERR(max98095->mclk) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
/* reset the codec, the DSP core, and disable all interrupts */
max98095_reset(component);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 030/337] ASoC: max98090: fix missing IS_ERR() before PTR_ERR() on mclk lookup
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (27 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 029/337] ASoC: max98095: fix missing IS_ERR() before PTR_ERR() on mclk lookup Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 031/337] of: reserved_mem: Add code to dynamically allocate reserved_mem array Greg Kroah-Hartman
` (314 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Uday Khare, Mark Brown, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Uday Khare <udaykhare77@gmail.com>
[ Upstream commit a792ce0fad61a70793ec565743f11d6ca534de59 ]
In max98090_probe(), the -EPROBE_DEFER check after devm_clk_get() is
broken due to a missing IS_ERR() guard.
The code intends to return -EPROBE_DEFER only when the clock lookup
fails with that specific error. However, without IS_ERR() the check:
if (PTR_ERR(max98090->mclk) == -EPROBE_DEFER)
is called unconditionally, including when devm_clk_get() succeeds and
returns a valid pointer. Calling PTR_ERR() on a valid pointer
reinterprets its address as a signed long; the result is arbitrary
and is almost never equal to -EPROBE_DEFER, so the check silently
does nothing in the success case. When devm_clk_get() fails with
any error other than -EPROBE_DEFER the check is also skipped, leaving
max98090->mclk holding an error pointer with no indication to the caller.
This means a deferred probe will never actually be triggered for this
device, and any non-EPROBE_DEFER clock error is silently swallowed with
the error pointer left in the mclk field.
Fix this by adding the missing IS_ERR() guard around the PTR_ERR() call,
matching the pattern already used in the sibling max98088 and wm8960
drivers.
Fixes: b10ab7b838bd ("ASoC: max98090: Add master clock handling")
Signed-off-by: Uday Khare <udaykhare77@gmail.com>
Link: https://patch.msgid.link/20260720104254.14948-1-udaykhare77@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/max98090.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c
index 4023b88e7bc13..9253707bccde9 100644
--- a/sound/soc/codecs/max98090.c
+++ b/sound/soc/codecs/max98090.c
@@ -2388,8 +2388,9 @@ static int max98090_probe(struct snd_soc_component *component)
dev_dbg(component->dev, "max98090_probe\n");
max98090->mclk = devm_clk_get(component->dev, "mclk");
- if (PTR_ERR(max98090->mclk) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
+ if (IS_ERR(max98090->mclk))
+ if (PTR_ERR(max98090->mclk) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
max98090->component = component;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 031/337] of: reserved_mem: Add code to dynamically allocate reserved_mem array
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (28 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 030/337] ASoC: max98090: " Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 032/337] of: reserved_mem: prevent OOB when too many dynamic regions are defined Greg Kroah-Hartman
` (313 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Oreoluwa Babatunde,
Rob Herring (Arm), Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oreoluwa Babatunde <quic_obabatun@quicinc.com>
[ Upstream commit 00c9a452a235c61f099504783badd9a7675ff5a5 ]
The reserved_mem array is statically allocated with a size of
MAX_RESERVED_REGIONS(64). Therefore, if the number of reserved_mem
regions exceeds this size, there will not be enough space to store
all the data.
Hence, extend the use of the static array by introducing a
dynamically allocated array based on the number of reserved memory
regions specified in the DT.
On architectures such as arm64, memblock allocated memory is not
writable until after the page tables have been setup. Hence, the
dynamic allocation of the reserved_mem array will need to be done only
after the page tables have been setup.
As a result, a temporary static array is still needed in the initial
stages to store the information of the dynamically-placed reserved
memory regions because the start address is selected only at run-time
and is not stored anywhere else.
It is not possible to wait until the reserved_mem array is allocated
because this is done after the page tables are setup and the reserved
memory regions need to be initialized before then.
After the reserved_mem array is allocated, all entries from the static
array is copied over to the new array, and the rest of the information
for the statically-placed reserved memory regions are read in from the
DT and stored in the new array as well.
Once the init process is completed, the temporary static array is
released back to the system because it is no longer needed. This is
achieved by marking it as __initdata.
Signed-off-by: Oreoluwa Babatunde <quic_obabatun@quicinc.com>
Link: https://lore.kernel.org/r/20241008220624.551309-3-quic_obabatun@quicinc.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Stable-dep-of: db3dbdfea1b8 ("of: reserved_mem: prevent OOB when too many dynamic regions are defined")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/of/of_reserved_mem.c | 63 +++++++++++++++++++++++++++++++++---
1 file changed, 59 insertions(+), 4 deletions(-)
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 7b5d6562fe4a0..02d3c3284f886 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -28,7 +28,9 @@
#include "of_private.h"
-static struct reserved_mem reserved_mem[MAX_RESERVED_REGIONS];
+static struct reserved_mem reserved_mem_array[MAX_RESERVED_REGIONS] __initdata;
+static struct reserved_mem *reserved_mem __refdata = reserved_mem_array;
+static int total_reserved_mem_cnt = MAX_RESERVED_REGIONS;
static int reserved_mem_count;
static int __init early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
@@ -57,6 +59,50 @@ static int __init early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
return err;
}
+/*
+ * alloc_reserved_mem_array() - allocate memory for the reserved_mem
+ * array using memblock
+ *
+ * This function is used to allocate memory for the reserved_mem
+ * array according to the total number of reserved memory regions
+ * defined in the DT.
+ * After the new array is allocated, the information stored in
+ * the initial static array is copied over to this new array and
+ * the new array is used from this point on.
+ */
+static void __init alloc_reserved_mem_array(void)
+{
+ struct reserved_mem *new_array;
+ size_t alloc_size, copy_size, memset_size;
+
+ alloc_size = array_size(total_reserved_mem_cnt, sizeof(*new_array));
+ if (alloc_size == SIZE_MAX) {
+ pr_err("Failed to allocate memory for reserved_mem array with err: %d", -EOVERFLOW);
+ return;
+ }
+
+ new_array = memblock_alloc(alloc_size, SMP_CACHE_BYTES);
+ if (!new_array) {
+ pr_err("Failed to allocate memory for reserved_mem array with err: %d", -ENOMEM);
+ return;
+ }
+
+ copy_size = array_size(reserved_mem_count, sizeof(*new_array));
+ if (copy_size == SIZE_MAX) {
+ memblock_free(new_array, alloc_size);
+ total_reserved_mem_cnt = MAX_RESERVED_REGIONS;
+ pr_err("Failed to allocate memory for reserved_mem array with err: %d", -EOVERFLOW);
+ return;
+ }
+
+ memset_size = alloc_size - copy_size;
+
+ memcpy(new_array, reserved_mem, copy_size);
+ memset(new_array + reserved_mem_count, 0, memset_size);
+
+ reserved_mem = new_array;
+}
+
static void __init fdt_init_reserved_mem_node(struct reserved_mem *rmem);
/*
* fdt_reserved_mem_save_node() - save fdt node for second pass initialization
@@ -66,7 +112,7 @@ static void __init fdt_reserved_mem_save_node(unsigned long node, const char *un
{
struct reserved_mem *rmem = &reserved_mem[reserved_mem_count];
- if (reserved_mem_count == ARRAY_SIZE(reserved_mem)) {
+ if (reserved_mem_count == total_reserved_mem_cnt) {
pr_err("not enough space for all defined regions.\n");
return;
}
@@ -199,6 +245,9 @@ void __init fdt_scan_reserved_mem_reg_nodes(void)
return;
}
+ /* Attempt dynamic allocation of a new reserved_mem array */
+ alloc_reserved_mem_array();
+
if (__reserved_mem_check_root(node)) {
pr_err("Reserved memory: unsupported node format, ignoring\n");
return;
@@ -243,7 +292,7 @@ static int __init __reserved_mem_alloc_size(unsigned long node, const char *unam
int __init fdt_scan_reserved_mem(void)
{
int node, child;
- int dynamic_nodes_cnt = 0;
+ int dynamic_nodes_cnt = 0, count = 0;
int dynamic_nodes[MAX_RESERVED_REGIONS];
const void *fdt = initial_boot_params;
@@ -266,6 +315,8 @@ int __init fdt_scan_reserved_mem(void)
uname = fdt_get_name(fdt, child, NULL);
err = __reserved_mem_reserve_reg(child, uname);
+ if (!err)
+ count++;
/*
* Save the nodes for the dynamically-placed regions
* into an array which will be used for allocation right
@@ -280,11 +331,15 @@ int __init fdt_scan_reserved_mem(void)
}
for (int i = 0; i < dynamic_nodes_cnt; i++) {
const char *uname;
+ int err;
child = dynamic_nodes[i];
uname = fdt_get_name(fdt, child, NULL);
- __reserved_mem_alloc_size(child, uname);
+ err = __reserved_mem_alloc_size(child, uname);
+ if (!err)
+ count++;
}
+ total_reserved_mem_cnt = count;
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 032/337] of: reserved_mem: prevent OOB when too many dynamic regions are defined
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (29 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 031/337] of: reserved_mem: Add code to dynamically allocate reserved_mem array Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 033/337] btrfs: fix leaking BTRFS_FS_STATE_REMOUNTING flag Greg Kroah-Hartman
` (312 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sang-Heon Jeon, Rob Herring (Arm),
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sang-Heon Jeon <ekffu200098@gmail.com>
[ Upstream commit db3dbdfea1b8f38774419c5c2c14e4b81c48708d ]
On boot, fdt_scan_reserved_mem() saves each dynamically-placed
/reserved-memory subnode into a local array of size
MAX_RESERVED_REGIONS.
If the device tree defines more than MAX_RESERVED_REGIONS
dynamically-placed regions, fdt_scan_reserved_mem() writes past the
end of the local array.
Add a bounds check that logs an error and skips the excess regions,
restoring the original behavior.
Fixes: 8a6e02d0c00e ("of: reserved_mem: Restructure how the reserved memory regions are processed")
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Link: https://patch.msgid.link/20260614133807.2165124-2-ekffu200098@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/of/of_reserved_mem.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 02d3c3284f886..9f4f0306b834f 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -317,6 +317,7 @@ int __init fdt_scan_reserved_mem(void)
err = __reserved_mem_reserve_reg(child, uname);
if (!err)
count++;
+
/*
* Save the nodes for the dynamically-placed regions
* into an array which will be used for allocation right
@@ -324,10 +325,17 @@ int __init fdt_scan_reserved_mem(void)
* or marked as no-map. This is done to avoid dynamically
* allocating from one of the statically-placed regions.
*/
- if (err == -ENOENT && of_get_flat_dt_prop(child, "size", NULL)) {
- dynamic_nodes[dynamic_nodes_cnt] = child;
- dynamic_nodes_cnt++;
+ if (err != -ENOENT || !of_get_flat_dt_prop(child, "size", NULL))
+ continue;
+
+ if (dynamic_nodes_cnt == MAX_RESERVED_REGIONS) {
+ pr_err("too many defined dynamic regions, skip '%s'\n",
+ uname);
+ continue;
}
+
+ dynamic_nodes[dynamic_nodes_cnt] = child;
+ dynamic_nodes_cnt++;
}
for (int i = 0; i < dynamic_nodes_cnt; i++) {
const char *uname;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 033/337] btrfs: fix leaking BTRFS_FS_STATE_REMOUNTING flag
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (30 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 032/337] of: reserved_mem: prevent OOB when too many dynamic regions are defined Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 034/337] btrfs: zoned: fix deadlock between metadata writeback and transaction commit Greg Kroah-Hartman
` (311 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Johannes Thumshirn, Qu Wenruo,
David Sterba, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Qu Wenruo <wqu@suse.com>
[ Upstream commit 6881f45d0eb541f2cee8c37c84b3860a23823bb3 ]
[BUG]
The following script can lead to unexpected qgroup rescan failure:
# mkfs.btrfs -f -O quota $dev
# mount $dev $mnt
# mount -o remount,rescue=ibadroots $mnt
^^^^^ This above command is expected to fail
# btrfs quota rescan -w $mnt
^^^^^ The above qgroup rescan is not expected to fail
# btrfs qgroup show $mnt
WARNING: qgroup data inconsistent, rescan recommended
Qgroupid Referenced Exclusive Path
-------- ---------- --------- ----
0/5 16.00KiB 16.00KiB <toplevel>
The above short script will be converted to a proper fstests case.
[CAUSE]
Inside btrfs_reconfigure(), if either btrfs_check_options() or
btrfs_check_features() failed, we will always have
BTRFS_FS_STATE_REMOUNTING set for the fs until the next successful
remount.
That BTRFS_FS_STATE_REMOUNTING flag will interrupt several operations,
including:
- Qgroup rescan
- Auto defrag
- Space reclaim
[FIX]
Change the error handling of btrfs_check_options() and
btrfs_check_features() to goto restore label.
Fixes: eddb1a433f26 ("btrfs: add reconfigure callback for fs_context")
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/super.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 21419bc33863b..c8ad43f94db0d 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1509,12 +1509,14 @@ static int btrfs_reconfigure(struct fs_context *fc)
sync_filesystem(sb);
set_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state);
- if (!btrfs_check_options(fs_info, &ctx->mount_opt, fc->sb_flags))
- return -EINVAL;
+ if (!btrfs_check_options(fs_info, &ctx->mount_opt, fc->sb_flags)) {
+ ret = -EINVAL;
+ goto restore;
+ }
ret = btrfs_check_features(fs_info, !(fc->sb_flags & SB_RDONLY));
if (ret < 0)
- return ret;
+ goto restore;
btrfs_ctx_to_info(fs_info, ctx);
btrfs_remount_begin(fs_info, old_ctx.mount_opt, fc->sb_flags);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 034/337] btrfs: zoned: fix deadlock between metadata writeback and transaction commit
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (31 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 033/337] btrfs: fix leaking BTRFS_FS_STATE_REMOUNTING flag Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 035/337] phy-zynqmp: Postpone getting clock rate until actually needed Greg Kroah-Hartman
` (310 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Naohiro Aota, Johannes Thumshirn,
David Sterba, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johannes Thumshirn <johannes.thumshirn@wdc.com>
[ Upstream commit 1ebe51c29fa9755d5b2fea28727c051117907cf8 ]
When writing out metadata extent buffers in a zoned filesystem,
btree_writepages() holds fs_info->zoned_meta_io_lock across the whole
writeback loop, including the call to btrfs_check_meta_write_pointer() ->
check_bg_is_active().
For the tree-log block group, check_bg_is_active() may fail to activate
the zone and fall back to btrfs_zone_finish_one_bg() to free an active
zone. That path waits for the running transaction to commit while still
holding zoned_meta_io_lock, but the committer needs that same lock to
write out the tree extents, so the two tasks deadlock:
Task A (kworker, metadata writeback) Task B (fsstress, transaction commit)
------------------------------------ -------------------------------------
wb_workfn() btrfs_commit_transaction(T)
btree_writepages() btrfs_write_and_wait_transaction()
btrfs_zoned_meta_io_lock() btrfs_write_marked_extents()
btrfs_check_meta_write_pointer() btree_writepages()
check_bg_is_active() [treelog_bg] btrfs_zoned_meta_io_lock()
btrfs_zone_finish_one_bg() <blocks on zoned_meta_io_lock,
btrfs_zone_finish() held by Task A>
do_zone_finish()
btrfs_inc_block_group_ro()
btrfs_wait_for_commit()
<blocks waiting for commit
of transaction T, done by
Task B>
The sibling branch in check_bg_is_active() already drops zoned_meta_io_lock
around do_zone_finish() for this exact reason. Do the same in the tree-log
branch: release the lock around btrfs_zone_finish_one_bg() and re-acquire
it afterwards. The lock only protects fs_info->active_{meta,system}_bg,
which this branch does not touch, and ctx->zoned_bg keeps a reference to
the block group across the unlock, so nothing is lost while the lock
is dropped.
This hang occasionally reproduces with fstests generic/475 on a zoned
btrfs filesystem.
Fixes: 13bb483d32ab ("btrfs: zoned: activate metadata block group on write time")
Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/zoned.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index d9c26f4be6634..c64840b155974 100644
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -2122,7 +2122,11 @@ static bool check_bg_is_active(struct btrfs_eb_write_context *ctx,
if (fs_info->treelog_bg == block_group->start) {
if (!btrfs_zone_activate(block_group)) {
- int ret_fin = btrfs_zone_finish_one_bg(fs_info);
+ int ret_fin;
+
+ btrfs_zoned_meta_io_unlock(fs_info);
+ ret_fin = btrfs_zone_finish_one_bg(fs_info);
+ btrfs_zoned_meta_io_lock(fs_info);
if (ret_fin != 1 || !btrfs_zone_activate(block_group))
return false;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 035/337] phy-zynqmp: Postpone getting clock rate until actually needed
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (32 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 034/337] btrfs: zoned: fix deadlock between metadata writeback and transaction commit Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 036/337] phy: zynqmp: fix clock error handling in xpsgtr_phy_init() Greg Kroah-Hartman
` (309 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Mike Looijmans, Michal Simek,
Vinod Koul, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mike Looijmans <mike.looijmans@topic.nl>
[ Upstream commit 065d5885f6180c534b7b176847b3e008f4e11850 ]
At probe time the driver would display the following error and abort:
xilinx-psgtr fd400000.phy: Invalid rate 0 for reference clock 0
At probe time, the associated GTR driver (e.g. SATA or PCIe) hasn't
initialized the clock yet, so clk_get_rate() likely returns 0 if the clock
is programmable. So this driver only works if the clock is fixed.
The PHY driver doesn't need to know the clock frequency at probe yet, so
wait until the associated driver initializes the lane before requesting the
clock rate setting.
In addition to allowing the driver to be used with programmable clocks,
this also reduces the driver's runtime memory footprint by removing an
array of pointers from struct xpsgtr_phy.
Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20250428063648.22034-1-mike.looijmans@topic.nl
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Stable-dep-of: e4779e2a16d6 ("phy: zynqmp: fix clock error handling in xpsgtr_phy_init()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/phy/xilinx/phy-zynqmp.c | 70 +++++++++++++++++----------------
1 file changed, 37 insertions(+), 33 deletions(-)
diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqmp.c
index e6579002f1146..6fcbdff760b32 100644
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -222,7 +222,6 @@ struct xpsgtr_phy {
* @siou: siou base address
* @gtr_mutex: mutex for locking
* @phys: PHY lanes
- * @refclk_sscs: spread spectrum settings for the reference clocks
* @clk: reference clocks
* @tx_term_fix: fix for GT issue
* @saved_icm_cfg0: stored value of ICM CFG0 register
@@ -235,7 +234,6 @@ struct xpsgtr_dev {
void __iomem *siou;
struct mutex gtr_mutex; /* mutex for locking */
struct xpsgtr_phy phys[NUM_LANES];
- const struct xpsgtr_ssc *refclk_sscs[NUM_LANES];
struct clk *clk[NUM_LANES];
bool tx_term_fix;
unsigned int saved_icm_cfg0;
@@ -398,13 +396,40 @@ static int xpsgtr_wait_pll_lock(struct phy *phy)
return ret;
}
+/* Get the spread spectrum (SSC) settings for the reference clock rate */
+static const struct xpsgtr_ssc *xpsgtr_find_sscs(struct xpsgtr_phy *gtr_phy)
+{
+ unsigned long rate;
+ struct clk *clk;
+ unsigned int i;
+
+ clk = gtr_phy->dev->clk[gtr_phy->refclk];
+ rate = clk_get_rate(clk);
+
+ for (i = 0 ; i < ARRAY_SIZE(ssc_lookup); i++) {
+ /* Allow an error of 100 ppm */
+ unsigned long error = ssc_lookup[i].refclk_rate / 10000;
+
+ if (abs(rate - ssc_lookup[i].refclk_rate) < error)
+ return &ssc_lookup[i];
+ }
+
+ dev_err(gtr_phy->dev->dev, "Invalid rate %lu for reference clock %u\n",
+ rate, gtr_phy->refclk);
+
+ return NULL;
+}
+
/* Configure PLL and spread-sprectrum clock. */
-static void xpsgtr_configure_pll(struct xpsgtr_phy *gtr_phy)
+static int xpsgtr_configure_pll(struct xpsgtr_phy *gtr_phy)
{
const struct xpsgtr_ssc *ssc;
u32 step_size;
- ssc = gtr_phy->dev->refclk_sscs[gtr_phy->refclk];
+ ssc = xpsgtr_find_sscs(gtr_phy);
+ if (!ssc)
+ return -EINVAL;
+
step_size = ssc->step_size;
xpsgtr_clr_set(gtr_phy->dev, PLL_REF_SEL(gtr_phy->lane),
@@ -446,6 +471,8 @@ static void xpsgtr_configure_pll(struct xpsgtr_phy *gtr_phy)
xpsgtr_clr_set_phy(gtr_phy, L0_PLL_SS_STEP_SIZE_3_MSB,
STEP_SIZE_3_MASK, (step_size & STEP_SIZE_3_MASK) |
FORCE_STEP_SIZE | FORCE_STEPS);
+
+ return 0;
}
/* Configure the lane protocol. */
@@ -658,7 +685,10 @@ static int xpsgtr_phy_init(struct phy *phy)
* Configure the PLL, the lane protocol, and perform protocol-specific
* initialization.
*/
- xpsgtr_configure_pll(gtr_phy);
+ ret = xpsgtr_configure_pll(gtr_phy);
+ if (ret)
+ goto out;
+
xpsgtr_lane_set_protocol(gtr_phy);
switch (gtr_phy->protocol) {
@@ -823,8 +853,7 @@ static struct phy *xpsgtr_xlate(struct device *dev,
}
refclk = args->args[3];
- if (refclk >= ARRAY_SIZE(gtr_dev->refclk_sscs) ||
- !gtr_dev->refclk_sscs[refclk]) {
+ if (refclk >= ARRAY_SIZE(gtr_dev->clk)) {
dev_err(dev, "Invalid reference clock number %u\n", refclk);
return ERR_PTR(-EINVAL);
}
@@ -928,9 +957,7 @@ static int xpsgtr_get_ref_clocks(struct xpsgtr_dev *gtr_dev)
{
unsigned int refclk;
- for (refclk = 0; refclk < ARRAY_SIZE(gtr_dev->refclk_sscs); ++refclk) {
- unsigned long rate;
- unsigned int i;
+ for (refclk = 0; refclk < ARRAY_SIZE(gtr_dev->clk); ++refclk) {
struct clk *clk;
char name[8];
@@ -946,29 +973,6 @@ static int xpsgtr_get_ref_clocks(struct xpsgtr_dev *gtr_dev)
continue;
gtr_dev->clk[refclk] = clk;
-
- /*
- * Get the spread spectrum (SSC) settings for the reference
- * clock rate.
- */
- rate = clk_get_rate(clk);
-
- for (i = 0 ; i < ARRAY_SIZE(ssc_lookup); i++) {
- /* Allow an error of 100 ppm */
- unsigned long error = ssc_lookup[i].refclk_rate / 10000;
-
- if (abs(rate - ssc_lookup[i].refclk_rate) < error) {
- gtr_dev->refclk_sscs[refclk] = &ssc_lookup[i];
- break;
- }
- }
-
- if (i == ARRAY_SIZE(ssc_lookup)) {
- dev_err(gtr_dev->dev,
- "Invalid rate %lu for reference clock %u\n",
- rate, refclk);
- return -EINVAL;
- }
}
return 0;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 036/337] phy: zynqmp: fix clock error handling in xpsgtr_phy_init()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (33 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 035/337] phy-zynqmp: Postpone getting clock rate until actually needed Greg Kroah-Hartman
@ 2026-08-07 14:33 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 037/337] phy: zynqmp: fix runtime PM leak on probe allocation failure Greg Kroah-Hartman
` (308 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:33 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Radhey Shyam Pandey, Michal Simek,
Vinod Koul, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
[ Upstream commit e4779e2a16d600892aaf743438f6ce8cc4eb3c4c ]
Propagate clk_prepare_enable() failures to the caller instead of
returning success, and disable the reference clock on initialization
error paths to avoid leaking clock references when phy_exit() is not
called.
Fixes: 25d700833513 ("phy: xilinx: phy-zynqmp: dynamic clock support for power-save")
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260720153832.1130006-2-radhey.shyam.pandey@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/phy/xilinx/phy-zynqmp.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqmp.c
index 6fcbdff760b32..5039b0e89cba4 100644
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -658,12 +658,13 @@ static int xpsgtr_phy_init(struct phy *phy)
{
struct xpsgtr_phy *gtr_phy = phy_get_drvdata(phy);
struct xpsgtr_dev *gtr_dev = gtr_phy->dev;
- int ret = 0;
+ int ret;
mutex_lock(>r_dev->gtr_mutex);
/* Configure and enable the clock when peripheral phy_init call */
- if (clk_prepare_enable(gtr_dev->clk[gtr_phy->refclk]))
+ ret = clk_prepare_enable(gtr_dev->clk[gtr_phy->refclk]);
+ if (ret)
goto out;
/* Skip initialization if not required. */
@@ -673,7 +674,7 @@ static int xpsgtr_phy_init(struct phy *phy)
if (gtr_dev->tx_term_fix) {
ret = xpsgtr_phy_tx_term_fix(gtr_phy);
if (ret < 0)
- goto out;
+ goto out_disable_clk;
gtr_dev->tx_term_fix = false;
}
@@ -687,7 +688,7 @@ static int xpsgtr_phy_init(struct phy *phy)
*/
ret = xpsgtr_configure_pll(gtr_phy);
if (ret)
- goto out;
+ goto out_disable_clk;
xpsgtr_lane_set_protocol(gtr_phy);
@@ -705,6 +706,10 @@ static int xpsgtr_phy_init(struct phy *phy)
break;
}
+ goto out;
+
+out_disable_clk:
+ clk_disable_unprepare(gtr_dev->clk[gtr_phy->refclk]);
out:
mutex_unlock(>r_dev->gtr_mutex);
return ret;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 037/337] phy: zynqmp: fix runtime PM leak on probe allocation failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (34 preceding siblings ...)
2026-08-07 14:33 ` [PATCH 6.12 036/337] phy: zynqmp: fix clock error handling in xpsgtr_phy_init() Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 038/337] netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp() Greg Kroah-Hartman
` (307 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Radhey Shyam Pandey, Michal Simek,
Vinod Koul, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
[ Upstream commit f3506e15cf72e94f62d5f2d173e5b7008f644cde ]
Allocate saved_regs before pm_runtime_resume_and_get() so a
devm_kmalloc() failure does not leave an unreleased runtime PM usage
counter.
Fixes: 5af9b304bc60 ("phy: xilinx: phy-zynqmp: Fix SGMII linkup failure on resume")
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260720153832.1130006-3-radhey.shyam.pandey@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/phy/xilinx/phy-zynqmp.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqmp.c
index 5039b0e89cba4..1ec5722ac427c 100644
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -1044,6 +1044,12 @@ static int xpsgtr_probe(struct platform_device *pdev)
return PTR_ERR(provider);
}
+ gtr_dev->saved_regs = devm_kmalloc(gtr_dev->dev,
+ sizeof(save_reg_address),
+ GFP_KERNEL);
+ if (!gtr_dev->saved_regs)
+ return -ENOMEM;
+
pm_runtime_set_active(gtr_dev->dev);
pm_runtime_enable(gtr_dev->dev);
@@ -1053,12 +1059,6 @@ static int xpsgtr_probe(struct platform_device *pdev)
return ret;
}
- gtr_dev->saved_regs = devm_kmalloc(gtr_dev->dev,
- sizeof(save_reg_address),
- GFP_KERNEL);
- if (!gtr_dev->saved_regs)
- return -ENOMEM;
-
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 038/337] netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (35 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 037/337] phy: zynqmp: fix runtime PM leak on probe allocation failure Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 039/337] drm/mediatek: Check CRTC state before freeing Greg Kroah-Hartman
` (306 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Weiming Shi, Xiang Mei,
Pablo Neira Ayuso, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei <xmei5@asu.edu>
[ Upstream commit db3d0e0e5d4bc5ab4fe445b9f413d1b486508ca5 ]
sip_help_tcp() stores the size change of each NAT-rewritten SIP message
in s16 diff and accumulates it in s16 tdiff, but a single message can
grow by more than S16_MAX while the packet stays under the 65535
enlarge_skb() limit: nf_nat_sip() rewrites every matching URI, and a long
Contact list expands the message by tens of kilobytes. diff then wraps,
and "datalen = datalen + diff - msglen" yields a huge unsigned datalen,
so the next iteration's ct_sip_get_header() reads past the linearized skb
tail.
Widen diff, tdiff and the seq_adjust hook to s32. Both are bounded by the
65535 byte packet limit, and the seqadj core is already s32
(nf_ct_seqadj_set() takes s32), so no previously accepted input is
rejected.
BUG: KASAN: use-after-free in ct_sip_get_header (net/netfilter/nf_conntrack_sip.c:464)
Read of size 1 at addr ffff888010800000 by task ksoftirqd/1/25
ct_sip_get_header (net/netfilter/nf_conntrack_sip.c:464)
sip_help_tcp (net/netfilter/nf_conntrack_sip.c:1694)
nf_confirm (net/netfilter/nf_conntrack_proto.c:183)
nf_hook_slow (net/netfilter/core.c:619)
ip6_output (net/ipv6/ip6_output.c:246)
ip6_forward (net/ipv6/ip6_output.c:690)
ipv6_rcv (net/ipv6/ip6_input.c:351)
__netif_receive_skb_one_core (net/core/dev.c:6212)
process_backlog (net/core/dev.c:6676)
__napi_poll (net/core/dev.c:7735)
net_rx_action (net/core/dev.c:7955)
handle_softirqs (kernel/softirq.c:622)
run_ksoftirqd (kernel/softirq.c:1076)
...
Fixes: f5b321bd37fb ("netfilter: nf_conntrack_sip: add TCP support")
Reported-by: Weiming Shi <bestswngs@gmail.com>
Link: https://patch.msgid.link/netfilter-devel/20260712234201.3213635-1-xmei5@asu.edu
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/netfilter/nf_conntrack_sip.h | 2 +-
net/netfilter/nf_conntrack_sip.c | 2 +-
net/netfilter/nf_nat_sip.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/netfilter/nf_conntrack_sip.h b/include/linux/netfilter/nf_conntrack_sip.h
index dbc614dfe0d56..aafa0c04f917e 100644
--- a/include/linux/netfilter/nf_conntrack_sip.h
+++ b/include/linux/netfilter/nf_conntrack_sip.h
@@ -115,7 +115,7 @@ struct nf_nat_sip_hooks {
unsigned int *datalen);
void (*seq_adjust)(struct sk_buff *skb,
- unsigned int protoff, s16 off);
+ unsigned int protoff, s32 off);
unsigned int (*expect)(struct sk_buff *skb,
unsigned int protoff,
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 852c0b74b8a77..4f975b83c84f6 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -1629,7 +1629,7 @@ static int sip_help_tcp(struct sk_buff *skb, unsigned int protoff,
unsigned int matchoff, matchlen;
unsigned int msglen, origlen;
const char *dptr, *end;
- s16 diff, tdiff = 0;
+ s32 diff, tdiff = 0;
int ret = NF_ACCEPT;
unsigned long clen;
bool term;
diff --git a/net/netfilter/nf_nat_sip.c b/net/netfilter/nf_nat_sip.c
index f7be30c69b5c8..a1c41defaf22d 100644
--- a/net/netfilter/nf_nat_sip.c
+++ b/net/netfilter/nf_nat_sip.c
@@ -315,7 +315,7 @@ static unsigned int nf_nat_sip(struct sk_buff *skb, unsigned int protoff,
}
static void nf_nat_sip_seq_adjust(struct sk_buff *skb, unsigned int protoff,
- s16 off)
+ s32 off)
{
enum ip_conntrack_info ctinfo;
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 039/337] drm/mediatek: Check CRTC state before freeing
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (36 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 038/337] netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp() Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 040/337] Drivers: hv: vmbus: Replace lockdep_hardirq_threaded() with lockdep annotation Greg Kroah-Hartman
` (305 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ruoyu Wang, CK Hu, Chun-Kuang Hu,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ruoyu Wang <ruoyuw560@gmail.com>
[ Upstream commit 233a4d3a39fc1585f5e271b2adab43c6af025ae0 ]
mtk_crtc_reset() destroys the current CRTC state only when crtc->state
is non-NULL, but it always converts crtc->state to struct mtk_crtc_state
and passes the result to kfree().
When reset is called without an existing state, container_of(NULL, ...)
does not produce NULL. Keep the mtk state free in the same crtc->state
guard as the helper state destruction.
This issue was found by a static analysis checker and confirmed by
manual source review.
Fixes: 2d267b81898e ("drm/mtk: Use __drm_atomic_helper_crtc_reset")
Signed-off-by: Ruoyu Wang <ruoyuw560@gmail.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260707150528.2270739-1-ruoyuw560@gmail.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_crtc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_crtc.c b/drivers/gpu/drm/mediatek/mtk_crtc.c
index c4c6d0249df56..aa8e6f6ddcd32 100644
--- a/drivers/gpu/drm/mediatek/mtk_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_crtc.c
@@ -153,10 +153,10 @@ static void mtk_crtc_reset(struct drm_crtc *crtc)
{
struct mtk_crtc_state *state;
- if (crtc->state)
+ if (crtc->state) {
__drm_atomic_helper_crtc_destroy_state(crtc->state);
-
- kfree(to_mtk_crtc_state(crtc->state));
+ kfree(to_mtk_crtc_state(crtc->state));
+ }
crtc->state = NULL;
state = kzalloc(sizeof(*state), GFP_KERNEL);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 040/337] Drivers: hv: vmbus: Replace lockdep_hardirq_threaded() with lockdep annotation
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (37 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 039/337] drm/mediatek: Check CRTC state before freeing Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 041/337] KEYS: trusted: dcp: fix key_len validation and calc_blob_len() return type Greg Kroah-Hartman
` (304 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sebastian Andrzej Siewior,
Michael Kelley, Wei Liu, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
[ Upstream commit 8c7ab779c8850f4dab8473463cca9a7d52fdaecc ]
lockdep_hardirq_threaded() is supposed to be used within IRQ core code
and not within drivers. It is not obvious from within the driver, that
this is the only interrupt service routing and that it is not shared
handler.
Replace lockdep_hardirq_threaded() with a lockdep annotation limiting
threaded context on PREEMPT_RT to __vmbus_isr().
Fixes: f8e6343b7a89c ("Drivers: hv: vmbus: Use kthread for vmbus interrupts on PREEMPT_RT")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hv/vmbus_drv.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 83f3215bc5bd5..db1c71832f2a8 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -1320,8 +1320,19 @@ static void vmbus_isr(void)
if (IS_ENABLED(CONFIG_PREEMPT_RT)) {
vmbus_irqd_wake();
} else {
- lockdep_hardirq_threaded();
+ static DEFINE_WAIT_OVERRIDE_MAP(vmbus_map, LD_WAIT_CONFIG);
+
+ /*
+ * vmbus_isr is never force-threaded and always invoked at hard
+ * IRQ level. __vmbus_isr() below can acquire a spinlock_t
+ * which becomes a sleeping lock and must not be acquired in
+ * this context. Therefore on PREEMPT_RT this will be threaded
+ * via vmbus_irqd_wake(). On non-PREEMPT the annotation lets
+ * lockdep know that acquiring a spinlock_t is not an issue.
+ */
+ lock_map_acquire_try(&vmbus_map);
__vmbus_isr();
+ lock_map_release(&vmbus_map);
}
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 041/337] KEYS: trusted: dcp: fix key_len validation and calc_blob_len() return type
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (38 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 040/337] Drivers: hv: vmbus: Replace lockdep_hardirq_threaded() with lockdep annotation Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 042/337] keys: fix out-of-bounds read in keyring_get_key_chunk() Greg Kroah-Hartman
` (303 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Fabrice Derepas, David Gstir,
Richard Weinberger, Jarkko Sakkinen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Fabrice Derepas <fabrice.derepas@canonical.com>
[ Upstream commit 35d661c98fe4733490f20b4311616a3c2c30abc0 ]
Two correctness and type-hygiene issues exist in the DCP trusted keys
implementation.
First, trusted_dcp_unseal() reads p->key_len from a user-supplied blob
without checking if it exceeds MAX_KEY_SIZE. If a crafted blob provides a
payload_len larger than 128, the subsequent do_aead_crypto() call writes
past the end of the p->key array into the adjacent p->blob buffer within
the same struct trusted_key_payload -- the caller's own input, not
unrelated kernel memory. While not exploitable, this violates strict array
bounds and triggers static analyzers. Fix this by adding a validation
check against MIN_KEY_SIZE and MAX_KEY_SIZE immediately after reading the
length, matching the checks already done in trusted_core.c.
Second, calc_blob_len() calculates a sum in size_t that truncates to
unsigned int on 64-bit platforms. Because the DCP hardware is only present
on 32-bit i.MX SoC platforms, size_t and unsigned int are functionally
equivalent in production, making this truncation harmless in practice.
Nevertheless, updating the return type to size_t (and subsequently updating
'blen' in the seal/unseal paths) resolves type-narrowing warnings and
improves overall code hygiene.
Fixes: 2e8a0f40a39c ("KEYS: trusted: Introduce NXP DCP-backed trusted keys")
Signed-off-by: Fabrice Derepas <fabrice.derepas@canonical.com>
Reviewed-by: David Gstir <david@sigma-star.at>
Reviewed-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/r/20260719163939.3624767-1-fabrice.derepas@canonical.com
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
security/keys/trusted-keys/trusted_dcp.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/security/keys/trusted-keys/trusted_dcp.c b/security/keys/trusted-keys/trusted_dcp.c
index 7b6eb655df0cb..c078adebe190e 100644
--- a/security/keys/trusted-keys/trusted_dcp.c
+++ b/security/keys/trusted-keys/trusted_dcp.c
@@ -69,7 +69,7 @@ static bool skip_zk_test;
module_param_named(dcp_skip_zk_test, skip_zk_test, bool, 0);
MODULE_PARM_DESC(dcp_skip_zk_test, "Don't test whether device keys are zero'ed");
-static unsigned int calc_blob_len(unsigned int payload_len)
+static size_t calc_blob_len(unsigned int payload_len)
{
return sizeof(struct dcp_blob_fmt) + payload_len + DCP_BLOB_AUTHLEN;
}
@@ -200,7 +200,8 @@ static int encrypt_blob_key(u8 *plain_key, u8 *encrypted_key)
static int trusted_dcp_seal(struct trusted_key_payload *p, char *datablob)
{
struct dcp_blob_fmt *b = (struct dcp_blob_fmt *)p->blob;
- int blen, ret;
+ size_t blen;
+ int ret;
u8 *plain_blob_key;
blen = calc_blob_len(p->key_len);
@@ -242,7 +243,8 @@ static int trusted_dcp_seal(struct trusted_key_payload *p, char *datablob)
static int trusted_dcp_unseal(struct trusted_key_payload *p, char *datablob)
{
struct dcp_blob_fmt *b = (struct dcp_blob_fmt *)p->blob;
- int blen, ret;
+ size_t blen;
+ int ret;
u8 *plain_blob_key = NULL;
if (b->fmt_version != DCP_BLOB_VERSION) {
@@ -253,9 +255,14 @@ static int trusted_dcp_unseal(struct trusted_key_payload *p, char *datablob)
}
p->key_len = le32_to_cpu(b->payload_len);
+ if (p->key_len < MIN_KEY_SIZE || p->key_len > MAX_KEY_SIZE) {
+ ret = -EINVAL;
+ goto out;
+ }
+
blen = calc_blob_len(p->key_len);
if (blen != p->blob_len) {
- pr_err("DCP blob has bad length: %i != %i\n", blen,
+ pr_err("DCP blob has bad length: %zu != %u\n", blen,
p->blob_len);
ret = -EINVAL;
goto out;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 042/337] keys: fix out-of-bounds read in keyring_get_key_chunk()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (39 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 041/337] KEYS: trusted: dcp: fix key_len validation and calc_blob_len() return type Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 043/337] keys: make keyring key-chunk byte order agree with keyring_diff_objects() Greg Kroah-Hartman
` (302 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Jarkko Sakkinen,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
[ Upstream commit 63918731f9ae25b5deb022f118e941e6dddfcef4 ]
For description-level chunks keyring_get_key_chunk() advances the read
pointer by level * sizeof(long) past the inline prefix but only
bounds-checks the prefix, so a long enough key description is read past
its kmemdup(desc, desc_len + 1) allocation. Compute the full byte
offset and bounds-check the description against it before reading.
The walk only reaches a description-level chunk when two keys collide
through the hash, x, type and domain_tag chunks, so this is reached from
an unprivileged add_key(2) with a crafted pair of same-type keys whose
index hashes collide; KASAN reports a slab-out-of-bounds read.
Fixes: f771fde82051 ("keys: Simplify key description management")
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/r/20260719161505.2423935-2-michael.bommarito@gmail.com
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
security/keys/keyring.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index e105349794f23..b9ca9dc9b0c3f 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -271,6 +271,7 @@ static unsigned long keyring_get_key_chunk(const void *data, int level)
unsigned long chunk = 0;
const u8 *d;
int desc_len = index_key->desc_len, n = sizeof(chunk);
+ unsigned int offset;
level /= ASSOC_ARRAY_KEY_CHUNK_SIZE;
switch (level) {
@@ -284,12 +285,12 @@ static unsigned long keyring_get_key_chunk(const void *data, int level)
return (unsigned long)index_key->domain_tag;
default:
level -= 4;
- if (desc_len <= sizeof(index_key->desc))
+ offset = sizeof(index_key->desc) + level * sizeof(long);
+ if (desc_len <= offset)
return 0;
- d = index_key->description + sizeof(index_key->desc);
- d += level * sizeof(long);
- desc_len -= sizeof(index_key->desc);
+ d = index_key->description + offset;
+ desc_len -= offset;
if (desc_len > n)
desc_len = n;
do {
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 043/337] keys: make keyring key-chunk byte order agree with keyring_diff_objects()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (40 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 042/337] keys: fix out-of-bounds read in keyring_get_key_chunk() Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 044/337] assoc_array: trim the final shortcut word using the current chunk end Greg Kroah-Hartman
` (301 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Jarkko Sakkinen,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
[ Upstream commit 58565eef0f8d861aae92abfb7658458d661cee17 ]
keyring_get_key_chunk() loads description bytes into the index chunk low
address first, while keyring_diff_objects() numbers the first differing
bit from the low end and folds the absolute byte index into the level
without removing the inline-prefix offset the level already carries.
The two disagree on byte order and bit position, so the array can be
told two keys first differ at a bit that does not differ in the chunk
the walker uses, letting crafted descriptions collide into one node.
Load the chunk in the order keyring_diff_objects() assumes and drop the
inline-prefix length when folding the byte index into the level. This
only changes the in-memory ordering used to place keys within a keyring;
add, search and read of non-colliding keys are unaffected.
Fixes: f771fde82051 ("keys: Simplify key description management")
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/r/20260719161505.2423935-3-michael.bommarito@gmail.com
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
security/keys/keyring.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index b9ca9dc9b0c3f..fd95a0eb7a466 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -293,9 +293,10 @@ static unsigned long keyring_get_key_chunk(const void *data, int level)
desc_len -= offset;
if (desc_len > n)
desc_len = n;
+ d += desc_len;
do {
chunk <<= 8;
- chunk |= *d++;
+ chunk |= *--d;
} while (--desc_len > 0);
return chunk;
}
@@ -376,7 +377,7 @@ static int keyring_diff_objects(const void *object, const void *data)
return -1;
differ_plus_i:
- level += i;
+ level += i - (int)sizeof(a->desc);
differ:
i = level * 8 + __ffs(seg_a ^ seg_b);
return i;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 044/337] assoc_array: trim the final shortcut word using the current chunk end
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (41 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 043/337] keys: make keyring key-chunk byte order agree with keyring_diff_objects() Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 045/337] netfilter: nf_tables: make nft_object rhltable per table Greg Kroah-Hartman
` (300 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Jarkko Sakkinen,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
[ Upstream commit a82c8a05e86f3f84e09698f65b4515b5d04633f6 ]
assoc_array_walk() masks off the bits past shortcut->skip_to_level in the
word that contains skip_to_level, gated on
round_up(sc_level, ASSOC_ARRAY_KEY_CHUNK_SIZE) > skip_to_level.
That guard is wrong in two opposite ways:
- When sc_level is word-aligned (every word after the first) round_up()
is a no-op, so the guard is sc_level > skip_to_level and never fires for
the word that holds skip_to_level. A shortcut that spans more than one
word and ends in the middle of its last word leaves that word untrimmed,
and its stale high bits leak into the dissimilarity word and can steer
the walk down the wrong descendant.
- When sc_level is unaligned (the first word) and skip_to_level sits on
the next chunk boundary, sc_level + CHUNK would exceed skip_to_level and
fire the trim with shift = skip_to_level & CHUNK_MASK == 0, which clears
the whole dissimilarity word and makes a differing shortcut compare
equal.
Use the end of the chunk that contains sc_level instead:
skip_to_level < round_down(sc_level, CHUNK) + CHUNK
For an aligned sc_level whose word holds skip_to_level this now fires (the
first bug); for an unaligned sc_level with skip_to_level on the following
boundary it does not, so shift is never 0 when the branch runs and the trim
never clears the whole word.
Fixes: 3cb989501c26 ("Add a generic associative array implementation.")
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/r/20260719161505.2423935-4-michael.bommarito@gmail.com
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
lib/assoc_array.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/assoc_array.c b/lib/assoc_array.c
index 388e656ac9743..01619e88a52c9 100644
--- a/lib/assoc_array.c
+++ b/lib/assoc_array.c
@@ -255,7 +255,8 @@ assoc_array_walk(const struct assoc_array *array,
sc_segments = shortcut->index_key[sc_level >> ASSOC_ARRAY_KEY_CHUNK_SHIFT];
dissimilarity = segments ^ sc_segments;
- if (round_up(sc_level, ASSOC_ARRAY_KEY_CHUNK_SIZE) > shortcut->skip_to_level) {
+ if (shortcut->skip_to_level < round_down(sc_level,
+ ASSOC_ARRAY_KEY_CHUNK_SIZE) + ASSOC_ARRAY_KEY_CHUNK_SIZE) {
/* Trim segments that are beyond the shortcut */
int shift = shortcut->skip_to_level & ASSOC_ARRAY_KEY_CHUNK_MASK;
dissimilarity &= ~(ULONG_MAX << shift);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 045/337] netfilter: nf_tables: make nft_object rhltable per table
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (42 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 044/337] assoc_array: trim the final shortcut word using the current chunk end Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 046/337] netfilter: xt_hashlimit: validate hashtable supports XT_HASHLIMIT_RATE_MATCH Greg Kroah-Hartman
` (299 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Florian Westphal, Pablo Neira Ayuso,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pablo Neira Ayuso <pablo@netfilter.org>
[ Upstream commit f4f699790590bd0896c48a71e9232a65198f92f0 ]
The nft_object rhltable is global, this allows for accessing objects
that are being dismangled from lookup path by other existing netns.
Given the nft_obj_destroy() releases the object inmediately, this might
lead to use-after-free of these objects that are being released.
Make the existing rhltable per table to address this issue to deal with
with the nft_rcv_nl_event() path too.
Update nft_obj_lookup() to take the table as non-const, otherwise,
compiler complains when passing the objname_ht to rhltable_lookup().
Fixes: 4d44175aa5bb ("netfilter: nf_tables: handle nft_object lookups via rhltable")
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/netfilter/nf_tables.h | 4 +++-
net/netfilter/nf_tables_api.c | 34 +++++++++++++++----------------
2 files changed, 19 insertions(+), 19 deletions(-)
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 032b649658be9..f4b59915a49c5 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -1274,6 +1274,7 @@ static inline void nft_use_inc_restore(u32 *use)
* @sets: sets in the table
* @objects: stateful objects in the table
* @flowtables: flow tables in the table
+ * @objname_ht: hashtable for objects lookup by name
* @hgenerator: handle generator state
* @handle: table handle
* @use: number of chain references to this table
@@ -1293,6 +1294,7 @@ struct nft_table {
struct list_head sets;
struct list_head objects;
struct list_head flowtables;
+ struct rhltable objname_ht;
u64 hgenerator;
u64 handle;
u32 use;
@@ -1380,7 +1382,7 @@ static inline void *nft_obj_data(const struct nft_object *obj)
#define nft_expr_obj(expr) *((struct nft_object **)nft_expr_priv(expr))
struct nft_object *nft_obj_lookup(const struct net *net,
- const struct nft_table *table,
+ struct nft_table *table,
const struct nlattr *nla, u32 objtype,
u8 genmask);
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 4cf565686a51f..03dd9d1db12fc 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -41,8 +41,6 @@ enum {
NFT_VALIDATE_DO,
};
-static struct rhltable nft_objname_ht;
-
static u32 nft_chain_hash(const void *data, u32 len, u32 seed);
static u32 nft_chain_hash_obj(const void *data, u32 len, u32 seed);
static int nft_chain_hash_cmp(struct rhashtable_compare_arg *, const void *);
@@ -1457,6 +1455,10 @@ static int nf_tables_newtable(struct sk_buff *skb, const struct nfnl_info *info,
if (err)
goto err_chain_ht;
+ err = rhltable_init(&table->objname_ht, &nft_objname_ht_params);
+ if (err < 0)
+ goto err_obj_ht;
+
INIT_LIST_HEAD(&table->chains);
INIT_LIST_HEAD(&table->sets);
INIT_LIST_HEAD(&table->objects);
@@ -1475,6 +1477,8 @@ static int nf_tables_newtable(struct sk_buff *skb, const struct nfnl_info *info,
list_add_tail_rcu(&table->list, &nft_net->tables);
return 0;
err_trans:
+ rhltable_destroy(&table->objname_ht);
+err_obj_ht:
rhltable_destroy(&table->chains_ht);
err_chain_ht:
kfree(table->udata);
@@ -1641,6 +1645,7 @@ static void nf_tables_table_destroy(struct nft_table *table)
return;
rhltable_destroy(&table->chains_ht);
+ rhltable_destroy(&table->objname_ht);
kfree(table->name);
kfree(table->udata);
kfree(table);
@@ -7578,7 +7583,7 @@ void nft_unregister_obj(struct nft_object_type *obj_type)
EXPORT_SYMBOL_GPL(nft_unregister_obj);
struct nft_object *nft_obj_lookup(const struct net *net,
- const struct nft_table *table,
+ struct nft_table *table,
const struct nlattr *nla, u32 objtype,
u8 genmask)
{
@@ -7594,7 +7599,7 @@ struct nft_object *nft_obj_lookup(const struct net *net,
!lockdep_commit_lock_is_held(net));
rcu_read_lock();
- list = rhltable_lookup(&nft_objname_ht, &k, nft_objname_ht_params);
+ list = rhltable_lookup(&table->objname_ht, &k, nft_objname_ht_params);
if (!list)
goto out;
@@ -7873,7 +7878,7 @@ static int nf_tables_newobj(struct sk_buff *skb, const struct nfnl_info *info,
if (err < 0)
goto err_trans;
- err = rhltable_insert(&nft_objname_ht, &obj->rhlhead,
+ err = rhltable_insert(&table->objname_ht, &obj->rhlhead,
nft_objname_ht_params);
if (err < 0)
goto err_obj_ht;
@@ -8052,8 +8057,8 @@ nf_tables_getobj_single(u32 portid, const struct nfnl_info *info,
struct netlink_ext_ack *extack = info->extack;
u8 genmask = nft_genmask_cur(info->net);
u8 family = info->nfmsg->nfgen_family;
- const struct nft_table *table;
struct net *net = info->net;
+ struct nft_table *table;
struct nft_object *obj;
struct sk_buff *skb2;
u32 objtype;
@@ -9782,9 +9787,9 @@ static void nf_tables_commit_chain(struct net *net, struct nft_chain *chain)
nf_tables_commit_chain_free_rules_old(g0);
}
-static void nft_obj_del(struct nft_object *obj)
+static void nft_obj_del(struct nft_table *table, struct nft_object *obj)
{
- rhltable_remove(&nft_objname_ht, &obj->rhlhead, nft_objname_ht_params);
+ rhltable_remove(&table->objname_ht, &obj->rhlhead, nft_objname_ht_params);
list_del_rcu(&obj->list);
}
@@ -10480,7 +10485,7 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
break;
case NFT_MSG_DELOBJ:
case NFT_MSG_DESTROYOBJ:
- nft_obj_del(nft_trans_obj(trans));
+ nft_obj_del(table, nft_trans_obj(trans));
nf_tables_obj_notify(&ctx, nft_trans_obj(trans),
trans->msg_type);
break;
@@ -10780,7 +10785,7 @@ static int __nf_tables_abort(struct net *net, enum nfnl_abort_action action)
nft_trans_destroy(trans);
} else {
nft_use_dec_restore(&table->use);
- nft_obj_del(nft_trans_obj(trans));
+ nft_obj_del(table, nft_trans_obj(trans));
}
break;
case NFT_MSG_DELOBJ:
@@ -11447,7 +11452,7 @@ static void __nft_release_table(struct net *net, struct nft_table *table)
nft_set_destroy(&ctx, set);
}
list_for_each_entry_safe(obj, ne, &table->objects, list) {
- nft_obj_del(obj);
+ nft_obj_del(table, obj);
nft_use_dec(&table->use);
nft_obj_destroy(&ctx, obj);
}
@@ -11629,10 +11634,6 @@ static int __init nf_tables_module_init(void)
if (err < 0)
goto err_netdev_notifier;
- err = rhltable_init(&nft_objname_ht, &nft_objname_ht_params);
- if (err < 0)
- goto err_rht_objname;
-
err = nft_offload_init();
if (err < 0)
goto err_offload;
@@ -11655,8 +11656,6 @@ static int __init nf_tables_module_init(void)
err_netlink_notifier:
nft_offload_exit();
err_offload:
- rhltable_destroy(&nft_objname_ht);
-err_rht_objname:
unregister_netdevice_notifier(&nf_tables_flowtable_notifier);
err_netdev_notifier:
nf_tables_core_module_exit();
@@ -11678,7 +11677,6 @@ static void __exit nf_tables_module_exit(void)
unregister_pernet_subsys(&nf_tables_net_ops);
cancel_work_sync(&trans_gc_work);
rcu_barrier();
- rhltable_destroy(&nft_objname_ht);
nf_tables_core_module_exit();
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 046/337] netfilter: xt_hashlimit: validate hashtable supports XT_HASHLIMIT_RATE_MATCH
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (43 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 045/337] netfilter: nf_tables: make nft_object rhltable per table Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 047/337] ipvs: fix the checksum validations Greg Kroah-Hartman
` (298 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pablo Neira Ayuso, Sasha Levin,
Talha Berk Arslan
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pablo Neira Ayuso <pablo@netfilter.org>
[ Upstream commit 305b63e1402267459fdabb183af4527f6799eebf ]
The XT_HASHLIMIT_RATE_MATCH flag mode changes the semantics of the
dsthash_ent structure which represents an entry in the hashtable. There
is a union area which uses a different layout to express the rate match
mode.
Update .checkentry path to validate the XT_HASHLIMIT_RATE_MATCH mode
flag is requested by two or more different rules that refer to the same
hashtable. Otherwise, uninitialized access to the burst field in the
union is possible.
Reject the use of the XT_HASHLIMIT_RATE_MATCH mode flag if set on by
revision less than 3 too.
Fixes: bea74641e378 ("netfilter: xt_hashlimit: add rate match mode")
Reported-and-tested-by: Talha Berk Arslan <talha.anything.info@gmail.com>
Link: https://patch.msgid.link/20260721074629.668-1-talha.anything.info@gmail.com/
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netfilter/xt_hashlimit.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 0859b8f767645..61813010cd319 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -118,6 +118,7 @@ struct xt_hashlimit_htable {
refcount_t use;
u_int8_t family;
bool rnd_initialized;
+ bool ratematch;
struct hashlimit_cfg3 cfg; /* config */
@@ -325,6 +326,7 @@ static int htable_create(struct net *net, struct hashlimit_cfg3 *cfg,
vfree(hinfo);
return -ENOMEM;
}
+ hinfo->ratematch = !!(cfg->mode & XT_HASHLIMIT_RATE_MATCH);
spin_lock_init(&hinfo->lock);
switch (revision) {
@@ -868,7 +870,10 @@ static int hashlimit_mt_check_common(const struct xt_mtchk_param *par,
}
/* Check for overflow. */
- if (revision >= 3 && cfg->mode & XT_HASHLIMIT_RATE_MATCH) {
+ if (cfg->mode & XT_HASHLIMIT_RATE_MATCH) {
+ if (revision < 3)
+ return -EINVAL;
+
if (cfg->avg == 0 || cfg->avg > U32_MAX) {
pr_info_ratelimited("invalid rate\n");
return -ERANGE;
@@ -901,6 +906,15 @@ static int hashlimit_mt_check_common(const struct xt_mtchk_param *par,
mutex_unlock(&hashlimit_mutex);
return ret;
}
+ } else {
+ if ((cfg->mode & XT_HASHLIMIT_RATE_MATCH &&
+ !(*hinfo)->ratematch) ||
+ (!(cfg->mode & XT_HASHLIMIT_RATE_MATCH) &&
+ (*hinfo)->ratematch)) {
+ mutex_unlock(&hashlimit_mutex);
+ htable_put(*hinfo);
+ return -EINVAL;
+ }
}
mutex_unlock(&hashlimit_mutex);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 047/337] ipvs: fix the checksum validations
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (44 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 046/337] netfilter: xt_hashlimit: validate hashtable supports XT_HASHLIMIT_RATE_MATCH Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 048/337] ipvs: fix places with wrong packet offsets Greg Kroah-Hartman
` (297 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Julian Anastasov, Pablo Neira Ayuso,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Julian Anastasov <ja@ssi.bg>
[ Upstream commit e876b75b9020a97bbdc79721e7fc749024891c65 ]
ip_vs_in_icmp_v6() is missing checksum validation for ICMPv6
packets from clients. In fact, as for TCP/UDP we should
validate the checksum for ICMP packets only when we
mangle the packets on MASQ or on reply for tunnel.
Also, Sashiko points out that handle_response_icmp() being
common for IPv4 and IPv6 is missing the pseudo-header
calculation while validating ICMPv6 messages from real
servers which is a problem if checksum is not validated
by the hardware.
Fix the problems by creating ip_vs_checksum_common_check()
helper and use it for TCP/UDP/ICMP both for IPv4 and IPv6.
Rely on the nf_checksum() for validating the ICMP messages
but use it also for TCP and UDP.
Use correct IP offset for IP_VS_DBG_RL_PKT for TCP/UDP/SCTP.
IPVS packets (TCP/UDP/SCTP/ICMP) do not need checksum
validation on LOCAL_OUT (local clients or local real
servers) and on FORWARD (traffic from servers on LAN).
Do it only on LOCAL_IN, in case nf_checksum() is not
called on PRE_ROUTING.
Also, ip_vs_checksum_complete() can be marked static.
Fixes: 2a3b791e6e11 ("IPVS: Add/adjust Netfilter hook functions and helpers for v6")
Link: https://sashiko.dev/#/patchset/20260708180315.77413-1-ja%40ssi.bg
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/ip_vs.h | 31 +++++++++++++++--
net/netfilter/ipvs/ip_vs_core.c | 20 +++++++++--
net/netfilter/ipvs/ip_vs_proto_sctp.c | 15 ++++----
net/netfilter/ipvs/ip_vs_proto_tcp.c | 44 +++++------------------
net/netfilter/ipvs/ip_vs_proto_udp.c | 50 ++++++---------------------
5 files changed, 74 insertions(+), 86 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 08b90d33acdc6..aef042039cb00 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -24,7 +24,9 @@
#include <linux/netfilter.h> /* for union nf_inet_addr */
#include <linux/ip.h>
#include <linux/ipv6.h> /* for struct ipv6hdr */
+#include <net/route.h>
#include <net/ipv6.h>
+#include <net/ip6_fib.h>
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
#include <net/netfilter/nf_conntrack.h>
#endif
@@ -1711,8 +1713,6 @@ void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
struct ip_vs_conn *cp, int dir);
#endif
-__sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset);
-
static inline __wsum ip_vs_check_diff4(__be32 old, __be32 new, __wsum oldsum)
{
__be32 diff[2] = { ~old, new };
@@ -1738,6 +1738,33 @@ static inline __wsum ip_vs_check_diff2(__be16 old, __be16 new, __wsum oldsum)
return csum_partial(diff, sizeof(diff), oldsum);
}
+static inline bool ip_vs_checksum_needed(struct sk_buff *skb, int af)
+{
+ /* Checksum unnecessary or already validated? */
+ if (skb_csum_unnecessary(skb))
+ return false;
+ /* LOCAL_OUT ? */
+ if (!skb->dev || skb->dev->flags & IFF_LOOPBACK)
+ return false;
+ /* !LOCAL_IN (FORWARD) ? */
+ if (af == AF_INET6) {
+ if (!(dst_rt6_info(skb_dst(skb))->rt6i_flags & RTF_LOCAL))
+ return false;
+ } else {
+ if (!(skb_rtable(skb)->rt_flags & RTCF_LOCAL))
+ return false;
+ }
+ return true;
+}
+
+static inline bool ip_vs_checksum_common_check(struct sk_buff *skb,
+ int offset, int proto, int af)
+{
+ if (!ip_vs_checksum_needed(skb, af))
+ return true;
+ return !nf_checksum(skb, NF_INET_LOCAL_IN, offset, proto, af);
+}
+
/* Forget current conntrack (unconfirmed) and attach notrack entry */
static inline void ip_vs_notrack(struct sk_buff *skb)
{
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 90619453cb6f0..306a8227d300e 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -689,7 +689,7 @@ static int sysctl_nat_icmp_send(struct netns_ipvs *ipvs) { return 0; }
#endif
-__sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset)
+static __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset)
{
return csum_fold(skb_checksum(skb, offset, skb->len - offset, 0));
}
@@ -860,13 +860,14 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
unsigned int offset, unsigned int ihl,
unsigned int hooknum)
{
+ int iproto = af == AF_INET6 ? IPPROTO_ICMPV6 : IPPROTO_ICMP;
unsigned int verdict = NF_DROP;
if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ)
goto after_nat;
/* Ensure the checksum is correct */
- if (!skb_csum_unnecessary(skb) && ip_vs_checksum_complete(skb, ihl)) {
+ if (!ip_vs_checksum_common_check(skb, ihl, iproto, af)) {
/* Failed checksum! */
IP_VS_DBG_BUF(1, "Forward ICMP: failed checksum from %s!\n",
IP_VS_DBG_ADDR(af, snet));
@@ -1720,7 +1721,8 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
verdict = NF_DROP;
/* Ensure the checksum is correct */
- if (!skb_csum_unnecessary(skb) && ip_vs_checksum_complete(skb, ihl)) {
+ if ((IP_VS_FWD_METHOD(cp) == IP_VS_CONN_F_MASQ || tunnel) &&
+ !ip_vs_checksum_common_check(skb, ihl, IPPROTO_ICMP, AF_INET)) {
/* Failed checksum! */
IP_VS_DBG(1, "Incoming ICMP: failed checksum from %pI4!\n",
&iph->saddr);
@@ -1886,6 +1888,18 @@ static int ip_vs_in_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb,
goto out;
}
+ verdict = NF_DROP;
+
+ /* Ensure the checksum is correct */
+ if (IP_VS_FWD_METHOD(cp) == IP_VS_CONN_F_MASQ &&
+ !ip_vs_checksum_common_check(skb, iph->len, IPPROTO_ICMPV6,
+ AF_INET6)) {
+ /* Failed checksum! */
+ IP_VS_DBG(1, "Incoming ICMPv6: failed checksum from %pI6c!\n",
+ &iph->saddr);
+ goto out;
+ }
+
/* do the statistics and put it back */
ip_vs_in_stats(cp, skb);
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index c67317be17dfa..f6f732b7dfa86 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -11,7 +11,7 @@
static int
sctp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp,
- unsigned int sctphoff);
+ struct ip_vs_iphdr *iph);
static int
sctp_conn_schedule(struct netns_ipvs *ipvs, int af, struct sk_buff *skb,
@@ -109,7 +109,7 @@ sctp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
int ret;
/* Some checks before mangling */
- if (!sctp_csum_check(cp->af, skb, pp, sctphoff))
+ if (!sctp_csum_check(cp->af, skb, pp, iph))
return 0;
/* Call application helper if needed */
@@ -157,7 +157,7 @@ sctp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
int ret;
/* Some checks before mangling */
- if (!sctp_csum_check(cp->af, skb, pp, sctphoff))
+ if (!sctp_csum_check(cp->af, skb, pp, iph))
return 0;
/* Call application helper if needed */
@@ -187,19 +187,22 @@ sctp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
static int
sctp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp,
- unsigned int sctphoff)
+ struct ip_vs_iphdr *iph)
{
+ unsigned int sctphoff = iph->len;
struct sctphdr *sh;
__le32 cmp, val;
+ if (!ip_vs_checksum_needed(skb, af))
+ return 1;
sh = (struct sctphdr *)(skb->data + sctphoff);
cmp = sh->checksum;
val = sctp_compute_cksum(skb, sctphoff);
if (val != cmp) {
/* CRC failure, dump it. */
- IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
- "Failed checksum for");
+ IP_VS_DBG_RL_PKT(0, af, pp, skb, iph->off,
+ "Failed checksum for");
return 0;
}
return 1;
diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c
index b382810156b2c..bf31127338aa0 100644
--- a/net/netfilter/ipvs/ip_vs_proto_tcp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c
@@ -30,7 +30,7 @@
static int
tcp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp,
- unsigned int tcphoff);
+ struct ip_vs_iphdr *iph);
static int
tcp_conn_schedule(struct netns_ipvs *ipvs, int af, struct sk_buff *skb,
@@ -167,7 +167,7 @@ tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
int ret;
/* Some checks before mangling */
- if (!tcp_csum_check(cp->af, skb, pp, tcphoff))
+ if (!tcp_csum_check(cp->af, skb, pp, iph))
return 0;
/* Call application helper if needed */
@@ -245,7 +245,7 @@ tcp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
int ret;
/* Some checks before mangling */
- if (!tcp_csum_check(cp->af, skb, pp, tcphoff))
+ if (!tcp_csum_check(cp->af, skb, pp, iph))
return 0;
/*
@@ -303,41 +303,13 @@ tcp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
static int
tcp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp,
- unsigned int tcphoff)
+ struct ip_vs_iphdr *iph)
{
- switch (skb->ip_summed) {
- case CHECKSUM_NONE:
- skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
- fallthrough;
- case CHECKSUM_COMPLETE:
-#ifdef CONFIG_IP_VS_IPV6
- if (af == AF_INET6) {
- if (csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
- &ipv6_hdr(skb)->daddr,
- skb->len - tcphoff,
- IPPROTO_TCP,
- skb->csum)) {
- IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
- "Failed checksum for");
- return 0;
- }
- } else
-#endif
- if (csum_tcpudp_magic(ip_hdr(skb)->saddr,
- ip_hdr(skb)->daddr,
- skb->len - tcphoff,
- ip_hdr(skb)->protocol,
- skb->csum)) {
- IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
- "Failed checksum for");
- return 0;
- }
- break;
- default:
- /* No need to checksum. */
- break;
+ if (!ip_vs_checksum_common_check(skb, iph->len, IPPROTO_TCP, af)) {
+ IP_VS_DBG_RL_PKT(0, af, pp, skb, iph->off,
+ "Failed checksum for");
+ return 0;
}
-
return 1;
}
diff --git a/net/netfilter/ipvs/ip_vs_proto_udp.c b/net/netfilter/ipvs/ip_vs_proto_udp.c
index dbd4155bb0752..40d30649b3048 100644
--- a/net/netfilter/ipvs/ip_vs_proto_udp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_udp.c
@@ -26,7 +26,7 @@
static int
udp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp,
- unsigned int udphoff);
+ struct ip_vs_iphdr *iph);
static int
udp_conn_schedule(struct netns_ipvs *ipvs, int af, struct sk_buff *skb,
@@ -156,7 +156,7 @@ udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
int ret;
/* Some checks before mangling */
- if (!udp_csum_check(cp->af, skb, pp, udphoff))
+ if (!udp_csum_check(cp->af, skb, pp, iph))
return 0;
/*
@@ -239,7 +239,7 @@ udp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
int ret;
/* Some checks before mangling */
- if (!udp_csum_check(cp->af, skb, pp, udphoff))
+ if (!udp_csum_check(cp->af, skb, pp, iph))
return 0;
/*
@@ -299,48 +299,20 @@ udp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
static int
udp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp,
- unsigned int udphoff)
+ struct ip_vs_iphdr *iph)
{
struct udphdr _udph, *uh;
- uh = skb_header_pointer(skb, udphoff, sizeof(_udph), &_udph);
+ uh = skb_header_pointer(skb, iph->len, sizeof(_udph), &_udph);
if (uh == NULL)
return 0;
- if (uh->check != 0) {
- switch (skb->ip_summed) {
- case CHECKSUM_NONE:
- skb->csum = skb_checksum(skb, udphoff,
- skb->len - udphoff, 0);
- fallthrough;
- case CHECKSUM_COMPLETE:
-#ifdef CONFIG_IP_VS_IPV6
- if (af == AF_INET6) {
- if (csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
- &ipv6_hdr(skb)->daddr,
- skb->len - udphoff,
- IPPROTO_UDP,
- skb->csum)) {
- IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
- "Failed checksum for");
- return 0;
- }
- } else
-#endif
- if (csum_tcpudp_magic(ip_hdr(skb)->saddr,
- ip_hdr(skb)->daddr,
- skb->len - udphoff,
- ip_hdr(skb)->protocol,
- skb->csum)) {
- IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
- "Failed checksum for");
- return 0;
- }
- break;
- default:
- /* No need to checksum. */
- break;
- }
+ if (!uh->check)
+ return 1;
+ if (!ip_vs_checksum_common_check(skb, iph->len, IPPROTO_UDP, af)) {
+ IP_VS_DBG_RL_PKT(0, af, pp, skb, iph->off,
+ "Failed checksum for");
+ return 0;
}
return 1;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 048/337] ipvs: fix places with wrong packet offsets
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (45 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 047/337] ipvs: fix the checksum validations Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 049/337] ipvs: do not mangle ICMP replies for non-first fragments Greg Kroah-Hartman
` (296 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Julian Anastasov, Pablo Neira Ayuso,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Julian Anastasov <ja@ssi.bg>
[ Upstream commit 15cab31a3730e05f0767b922a7450e5d784b2607 ]
The offsets we use to packet headers and payloads should be
based on skb->data. We even already respect non-zero
network offset in ip_vs_fill_iph_skb() but some places
do it wrongly and support only zero offset which is expected
for the IP layer where IPVS has hooks.
Change all places that instead of skb->data use offsets based
on the network header (skb_network_header, ip_hdr, etc) because
this doubles the network offset as noted by Sashiko.
For ip_vs_nat_icmp_v6() we can even rely on the IPv6 header
parsing done by the caller.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Link: https://sashiko.dev/#/patchset/20260710143733.29741-2-fw%40strlen.de
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/ip_vs.h | 15 +--
net/netfilter/ipvs/ip_vs_app.c | 4 +-
net/netfilter/ipvs/ip_vs_core.c | 133 +++++++++++++-------------
net/netfilter/ipvs/ip_vs_proto_sctp.c | 4 +-
net/netfilter/ipvs/ip_vs_proto_tcp.c | 4 +-
net/netfilter/ipvs/ip_vs_proto_udp.c | 4 +-
net/netfilter/ipvs/ip_vs_xmit.c | 26 ++---
7 files changed, 97 insertions(+), 93 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index aef042039cb00..a44979db80134 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -1626,8 +1626,9 @@ int ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
int ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph);
int ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
- struct ip_vs_protocol *pp, int offset,
- unsigned int hooknum, struct ip_vs_iphdr *iph);
+ struct ip_vs_protocol *pp, unsigned int toff,
+ unsigned int wlen, unsigned int hooknum,
+ struct ip_vs_iphdr *ciph);
void ip_vs_dest_dst_rcu_free(struct rcu_head *head);
#ifdef CONFIG_IP_VS_IPV6
@@ -1640,8 +1641,9 @@ int ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
int ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph);
int ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
- struct ip_vs_protocol *pp, int offset,
- unsigned int hooknum, struct ip_vs_iphdr *iph);
+ struct ip_vs_protocol *pp, unsigned int toff,
+ unsigned int wlen, unsigned int hooknum,
+ struct ip_vs_iphdr *ciph);
#endif
#ifdef CONFIG_SYSCTL
@@ -1706,11 +1708,12 @@ static inline char ip_vs_fwd_tag(struct ip_vs_conn *cp)
}
void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
- struct ip_vs_conn *cp, int dir);
+ struct ip_vs_conn *cp, int dir, unsigned int toff);
#ifdef CONFIG_IP_VS_IPV6
void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
- struct ip_vs_conn *cp, int dir);
+ struct ip_vs_conn *cp, int dir, unsigned int toff,
+ struct ip_vs_iphdr *ciph);
#endif
static inline __wsum ip_vs_check_diff4(__be32 old, __be32 new, __wsum oldsum)
diff --git a/net/netfilter/ipvs/ip_vs_app.c b/net/netfilter/ipvs/ip_vs_app.c
index f9132b359f0c6..0c690a30a85dc 100644
--- a/net/netfilter/ipvs/ip_vs_app.c
+++ b/net/netfilter/ipvs/ip_vs_app.c
@@ -368,7 +368,7 @@ static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff *skb,
if (skb_ensure_writable(skb, ipvsh->len + sizeof(*th)))
return 0;
- th = (struct tcphdr *)(skb_network_header(skb) + ipvsh->len);
+ th = (struct tcphdr *)(skb->data + ipvsh->len);
/*
* Remember seq number in case this pkt gets resized
@@ -444,7 +444,7 @@ static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff *skb,
if (skb_ensure_writable(skb, ipvsh->len + sizeof(*th)))
return 0;
- th = (struct tcphdr *)(skb_network_header(skb) + ipvsh->len);
+ th = (struct tcphdr *)(skb->data + ipvsh->len);
/*
* Remember seq number in case this pkt gets resized
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 306a8227d300e..784c00ec01ef7 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -746,13 +746,12 @@ static int ip_vs_route_me_harder(struct netns_ipvs *ipvs, int af,
* - inout: 1=in->out, 0=out->in
*/
void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
- struct ip_vs_conn *cp, int inout)
+ struct ip_vs_conn *cp, int inout, unsigned int toff)
{
struct iphdr *iph = ip_hdr(skb);
- unsigned int icmp_offset = iph->ihl*4;
- struct icmphdr *icmph = (struct icmphdr *)(skb_network_header(skb) +
- icmp_offset);
+ struct icmphdr *icmph = (struct icmphdr *)(skb->data + toff);
struct iphdr *ciph = (struct iphdr *)(icmph + 1);
+ unsigned int coff __maybe_unused = toff + sizeof(struct icmphdr);
if (inout) {
iph->saddr = cp->vaddr.ip;
@@ -779,48 +778,45 @@ void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
/* And finally the ICMP checksum */
icmph->checksum = 0;
- icmph->checksum = ip_vs_checksum_complete(skb, icmp_offset);
+ icmph->checksum = ip_vs_checksum_complete(skb, toff);
skb->ip_summed = CHECKSUM_UNNECESSARY;
if (inout)
- IP_VS_DBG_PKT(11, AF_INET, pp, skb, (void *)ciph - (void *)iph,
- "Forwarding altered outgoing ICMP");
+ IP_VS_DBG_PKT(11, AF_INET, pp, skb, coff,
+ "Forwarding altered outgoing ICMP");
else
- IP_VS_DBG_PKT(11, AF_INET, pp, skb, (void *)ciph - (void *)iph,
- "Forwarding altered incoming ICMP");
+ IP_VS_DBG_PKT(11, AF_INET, pp, skb, coff,
+ "Forwarding altered incoming ICMP");
}
#ifdef CONFIG_IP_VS_IPV6
void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
- struct ip_vs_conn *cp, int inout)
+ struct ip_vs_conn *cp, int inout, unsigned int toff,
+ struct ip_vs_iphdr *ciph)
{
struct ipv6hdr *iph = ipv6_hdr(skb);
- unsigned int icmp_offset = 0;
- unsigned int offs = 0; /* header offset*/
int protocol;
struct icmp6hdr *icmph;
- struct ipv6hdr *ciph;
- unsigned short fragoffs;
+ struct ipv6hdr *cih;
- ipv6_find_hdr(skb, &icmp_offset, IPPROTO_ICMPV6, &fragoffs, NULL);
- icmph = (struct icmp6hdr *)(skb_network_header(skb) + icmp_offset);
- offs = icmp_offset + sizeof(struct icmp6hdr);
- ciph = (struct ipv6hdr *)(skb_network_header(skb) + offs);
+ icmph = (struct icmp6hdr *)(skb->data + toff);
+ cih = (struct ipv6hdr *)(skb->data + ciph->off);
- protocol = ipv6_find_hdr(skb, &offs, -1, &fragoffs, NULL);
+ protocol = ciph->protocol;
if (inout) {
iph->saddr = cp->vaddr.in6;
- ciph->daddr = cp->vaddr.in6;
+ cih->daddr = cp->vaddr.in6;
} else {
iph->daddr = cp->daddr.in6;
- ciph->saddr = cp->daddr.in6;
+ cih->saddr = cp->daddr.in6;
}
/* the TCP/UDP/SCTP port */
- if (!fragoffs && (IPPROTO_TCP == protocol || IPPROTO_UDP == protocol ||
- IPPROTO_SCTP == protocol)) {
- __be16 *ports = (void *)(skb_network_header(skb) + offs);
+ if (!ciph->fragoffs &&
+ (protocol == IPPROTO_TCP || protocol == IPPROTO_UDP ||
+ protocol == IPPROTO_SCTP)) {
+ __be16 *ports = (void *)(skb->data + ciph->len);
IP_VS_DBG(11, "%s() changed port %d to %d\n", __func__,
ntohs(inout ? ports[1] : ports[0]),
@@ -833,19 +829,17 @@ void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
/* And finally the ICMP checksum */
icmph->icmp6_cksum = ~csum_ipv6_magic(&iph->saddr, &iph->daddr,
- skb->len - icmp_offset,
+ skb->len - toff,
IPPROTO_ICMPV6, 0);
- skb->csum_start = skb_network_header(skb) - skb->head + icmp_offset;
+ skb->csum_start = skb_headroom(skb) + toff;
skb->csum_offset = offsetof(struct icmp6hdr, icmp6_cksum);
skb->ip_summed = CHECKSUM_PARTIAL;
if (inout)
- IP_VS_DBG_PKT(11, AF_INET6, pp, skb,
- (void *)ciph - (void *)iph,
+ IP_VS_DBG_PKT(11, AF_INET6, pp, skb, ciph->off,
"Forwarding altered outgoing ICMPv6");
else
- IP_VS_DBG_PKT(11, AF_INET6, pp, skb,
- (void *)ciph - (void *)iph,
+ IP_VS_DBG_PKT(11, AF_INET6, pp, skb, ciph->off,
"Forwarding altered incoming ICMPv6");
}
#endif
@@ -855,37 +849,38 @@ void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
*/
static int handle_response_icmp(int af, struct sk_buff *skb,
union nf_inet_addr *snet,
- __u8 protocol, struct ip_vs_conn *cp,
+ struct ip_vs_conn *cp,
struct ip_vs_protocol *pp,
- unsigned int offset, unsigned int ihl,
- unsigned int hooknum)
+ struct ip_vs_iphdr *ciph,
+ unsigned int toff, unsigned int hooknum)
{
int iproto = af == AF_INET6 ? IPPROTO_ICMPV6 : IPPROTO_ICMP;
unsigned int verdict = NF_DROP;
+ unsigned int ctoff = ciph->len;
if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ)
goto after_nat;
/* Ensure the checksum is correct */
- if (!ip_vs_checksum_common_check(skb, ihl, iproto, af)) {
+ if (!ip_vs_checksum_common_check(skb, toff, iproto, af)) {
/* Failed checksum! */
IP_VS_DBG_BUF(1, "Forward ICMP: failed checksum from %s!\n",
IP_VS_DBG_ADDR(af, snet));
goto out;
}
- if (IPPROTO_TCP == protocol || IPPROTO_UDP == protocol ||
- IPPROTO_SCTP == protocol)
- offset += 2 * sizeof(__u16);
- if (skb_ensure_writable(skb, offset))
+ if (ciph->protocol == IPPROTO_TCP || ciph->protocol == IPPROTO_UDP ||
+ ciph->protocol == IPPROTO_SCTP)
+ ctoff += 2 * sizeof(__u16);
+ if (skb_ensure_writable(skb, ctoff))
goto out;
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6)
- ip_vs_nat_icmp_v6(skb, pp, cp, 1);
+ ip_vs_nat_icmp_v6(skb, pp, cp, 1, toff, ciph);
else
#endif
- ip_vs_nat_icmp(skb, pp, cp, 1);
+ ip_vs_nat_icmp(skb, pp, cp, 1, toff);
if (ip_vs_route_me_harder(cp->ipvs, af, skb, hooknum))
goto out;
@@ -913,9 +908,9 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
* Currently handles error types - unreachable, quench, ttl exceeded.
*/
static int ip_vs_out_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb,
- int *related, unsigned int hooknum)
+ int *related, unsigned int hooknum,
+ struct ip_vs_iphdr *ipvsh)
{
- struct iphdr *iph;
struct icmphdr _icmph, *ic;
struct iphdr _ciph, *cih; /* The ip header contained within the ICMP */
struct ip_vs_iphdr ciph;
@@ -930,17 +925,19 @@ static int ip_vs_out_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb,
if (ip_is_fragment(ip_hdr(skb))) {
if (ip_vs_gather_frags(ipvs, skb, ip_vs_defrag_user(hooknum)))
return NF_STOLEN;
+ if (!ip_vs_fill_iph_skb(AF_INET, skb, false, ipvsh))
+ return NF_ACCEPT;
}
- iph = ip_hdr(skb);
- offset = ihl = iph->ihl * 4;
+ ihl = ipvsh->len;
+ offset = ipvsh->len;
ic = skb_header_pointer(skb, offset, sizeof(_icmph), &_icmph);
if (ic == NULL)
return NF_DROP;
IP_VS_DBG(12, "Outgoing ICMP (%d,%d) %pI4->%pI4\n",
ic->type, ntohs(icmp_id(ic)),
- &iph->saddr, &iph->daddr);
+ &ipvsh->saddr.ip, &ipvsh->daddr.ip);
/*
* Work through seeing if this is for us.
@@ -959,7 +956,7 @@ static int ip_vs_out_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb,
/* Now find the contained IP header */
offset += sizeof(_icmph);
cih = skb_header_pointer(skb, offset, sizeof(_ciph), &_ciph);
- if (cih == NULL)
+ if (!(cih && cih->version == 4 && cih->ihl >= 5))
return NF_ACCEPT; /* The packet looks wrong, ignore */
pp = ip_vs_proto_get(cih->protocol);
@@ -982,9 +979,9 @@ static int ip_vs_out_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb,
if (!cp)
return NF_ACCEPT;
- snet.ip = iph->saddr;
- return handle_response_icmp(AF_INET, skb, &snet, cih->protocol, cp,
- pp, ciph.len, ihl, hooknum);
+ snet.ip = ipvsh->saddr.ip;
+ return handle_response_icmp(AF_INET, skb, &snet, cp, pp, &ciph, ihl,
+ hooknum);
}
#ifdef CONFIG_IP_VS_IPV6
@@ -997,7 +994,6 @@ static int ip_vs_out_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb,
struct ip_vs_conn *cp;
struct ip_vs_protocol *pp;
union nf_inet_addr snet;
- unsigned int offset;
*related = 1;
ic = frag_safe_skb_hp(skb, ipvsh->len, sizeof(_icmph), &_icmph);
@@ -1040,9 +1036,8 @@ static int ip_vs_out_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb,
return NF_ACCEPT;
snet.in6 = ciph.saddr.in6;
- offset = ciph.len;
- return handle_response_icmp(AF_INET6, skb, &snet, ciph.protocol, cp,
- pp, offset, ipvsh->len, hooknum);
+ return handle_response_icmp(AF_INET6, skb, &snet, cp, pp, &ciph,
+ ipvsh->len, hooknum);
}
#endif
@@ -1368,7 +1363,8 @@ ip_vs_out_hook(void *priv, struct sk_buff *skb, const struct nf_hook_state *stat
#endif
if (unlikely(iph.protocol == IPPROTO_ICMP)) {
int related;
- int verdict = ip_vs_out_icmp(ipvs, skb, &related, hooknum);
+ int verdict = ip_vs_out_icmp(ipvs, skb, &related,
+ hooknum, &iph);
if (related)
return verdict;
@@ -1576,9 +1572,8 @@ static int ipvs_gre_decap(struct netns_ipvs *ipvs, struct sk_buff *skb,
*/
static int
ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
- unsigned int hooknum)
+ unsigned int hooknum, struct ip_vs_iphdr *iph)
{
- struct iphdr *iph;
struct icmphdr _icmph, *ic;
struct iphdr _ciph, *cih; /* The ip header contained within the ICMP */
struct ip_vs_iphdr ciph;
@@ -1588,7 +1583,7 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
unsigned int offset, offset2, ihl, verdict;
bool tunnel, new_cp = false;
union nf_inet_addr *raddr;
- char *outer_proto = "IPIP";
+ char *outer_proto __maybe_unused = "IPIP";
unsigned int hlen_ipip;
int ulen = 0;
@@ -1598,17 +1593,19 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
if (ip_is_fragment(ip_hdr(skb))) {
if (ip_vs_gather_frags(ipvs, skb, ip_vs_defrag_user(hooknum)))
return NF_STOLEN;
+ if (!ip_vs_fill_iph_skb(AF_INET, skb, false, iph))
+ return NF_ACCEPT;
}
- iph = ip_hdr(skb);
- offset = ihl = iph->ihl * 4;
+ ihl = iph->len;
+ offset = iph->len;
ic = skb_header_pointer(skb, offset, sizeof(_icmph), &_icmph);
if (ic == NULL)
return NF_DROP;
IP_VS_DBG(12, "Incoming ICMP (%d,%d) %pI4->%pI4\n",
ic->type, ntohs(icmp_id(ic)),
- &iph->saddr, &iph->daddr);
+ &iph->saddr.ip, &iph->daddr.ip);
/*
* Work through seeing if this is for us.
@@ -1725,7 +1722,7 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
!ip_vs_checksum_common_check(skb, ihl, IPPROTO_ICMP, AF_INET)) {
/* Failed checksum! */
IP_VS_DBG(1, "Incoming ICMP: failed checksum from %pI4!\n",
- &iph->saddr);
+ &iph->saddr.ip);
goto out;
}
@@ -1796,7 +1793,8 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
if (IPPROTO_TCP == cih->protocol || IPPROTO_UDP == cih->protocol ||
IPPROTO_SCTP == cih->protocol)
offset += 2 * sizeof(__u16);
- verdict = ip_vs_icmp_xmit(skb, cp, pp, offset, hooknum, &ciph);
+ verdict = ip_vs_icmp_xmit(skb, cp, pp, iph->len, offset, hooknum,
+ &ciph);
out:
if (likely(!new_cp))
@@ -1909,7 +1907,8 @@ static int ip_vs_in_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb,
IPPROTO_SCTP == ciph.protocol)
offset += 2 * sizeof(__u16); /* Also mangle ports */
- verdict = ip_vs_icmp_xmit_v6(skb, cp, pp, offset, hooknum, &ciph);
+ verdict = ip_vs_icmp_xmit_v6(skb, cp, pp, iph->len, offset, hooknum,
+ &ciph);
out:
if (likely(!new_cp))
@@ -1988,7 +1987,7 @@ ip_vs_in_hook(void *priv, struct sk_buff *skb, const struct nf_hook_state *state
if (unlikely(iph.protocol == IPPROTO_ICMP)) {
int related;
int verdict = ip_vs_in_icmp(ipvs, skb, &related,
- hooknum);
+ hooknum, &iph);
if (related)
return verdict;
@@ -2124,6 +2123,7 @@ ip_vs_forward_icmp(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
struct netns_ipvs *ipvs = net_ipvs(state->net);
+ struct ip_vs_iphdr iphdr;
int r;
/* ipvs enabled in this netns ? */
@@ -2133,10 +2133,9 @@ ip_vs_forward_icmp(void *priv, struct sk_buff *skb,
if (state->pf == NFPROTO_IPV4) {
if (ip_hdr(skb)->protocol != IPPROTO_ICMP)
return NF_ACCEPT;
+ ip_vs_fill_iph_skb(AF_INET, skb, false, &iphdr);
#ifdef CONFIG_IP_VS_IPV6
} else {
- struct ip_vs_iphdr iphdr;
-
ip_vs_fill_iph_skb(AF_INET6, skb, false, &iphdr);
if (iphdr.protocol != IPPROTO_ICMPV6)
@@ -2146,7 +2145,7 @@ ip_vs_forward_icmp(void *priv, struct sk_buff *skb,
#endif
}
- return ip_vs_in_icmp(ipvs, skb, &r, state->hook);
+ return ip_vs_in_icmp(ipvs, skb, &r, state->hook, &iphdr);
}
static const struct nf_hook_ops ip_vs_ops4[] = {
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index f6f732b7dfa86..3dbd3096e1637 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -121,7 +121,7 @@ sctp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
payload_csum = true;
}
- sctph = (void *) skb_network_header(skb) + sctphoff;
+ sctph = (void *)skb->data + sctphoff;
/* Only update csum if we really have to */
if (sctph->source != cp->vport || payload_csum ||
@@ -169,7 +169,7 @@ sctp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
payload_csum = true;
}
- sctph = (void *) skb_network_header(skb) + sctphoff;
+ sctph = (void *)skb->data + sctphoff;
/* Only update csum if we really have to */
if (sctph->dest != cp->dport || payload_csum ||
diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c
index bf31127338aa0..1ac9c233537d3 100644
--- a/net/netfilter/ipvs/ip_vs_proto_tcp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c
@@ -180,7 +180,7 @@ tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
payload_csum = true;
}
- tcph = (void *)skb_network_header(skb) + tcphoff;
+ tcph = (void *)skb->data + tcphoff;
tcph->source = cp->vport;
/* Adjust TCP checksums */
@@ -261,7 +261,7 @@ tcp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
payload_csum = true;
}
- tcph = (void *)skb_network_header(skb) + tcphoff;
+ tcph = (void *)skb->data + tcphoff;
tcph->dest = cp->dport;
/*
diff --git a/net/netfilter/ipvs/ip_vs_proto_udp.c b/net/netfilter/ipvs/ip_vs_proto_udp.c
index 40d30649b3048..96ac882df15c1 100644
--- a/net/netfilter/ipvs/ip_vs_proto_udp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_udp.c
@@ -171,7 +171,7 @@ udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
payload_csum = true;
}
- udph = (void *)skb_network_header(skb) + udphoff;
+ udph = (void *)skb->data + udphoff;
udph->source = cp->vport;
/*
@@ -255,7 +255,7 @@ udp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp,
payload_csum = true;
}
- udph = (void *)skb_network_header(skb) + udphoff;
+ udph = (void *)skb->data + udphoff;
udph->dest = cp->dport;
/*
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index fa1b03c3201f1..05e6164c45039 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -1499,8 +1499,9 @@ ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
*/
int
ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
- struct ip_vs_protocol *pp, int offset, unsigned int hooknum,
- struct ip_vs_iphdr *iph)
+ struct ip_vs_protocol *pp, unsigned int toff,
+ unsigned int wlen, unsigned int hooknum,
+ struct ip_vs_iphdr *ciph)
{
struct rtable *rt; /* Route to the other host */
int rc;
@@ -1512,7 +1513,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
translate address/port back */
if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ) {
if (cp->packet_xmit)
- rc = cp->packet_xmit(skb, cp, pp, iph);
+ rc = cp->packet_xmit(skb, cp, pp, ciph);
else
rc = NF_ACCEPT;
/* do not touch skb anymore */
@@ -1530,7 +1531,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
IP_VS_RT_MODE_LOCAL | IP_VS_RT_MODE_NON_LOCAL |
IP_VS_RT_MODE_RDR : IP_VS_RT_MODE_NON_LOCAL;
local = __ip_vs_get_out_rt(cp->ipvs, cp->af, skb, cp->dest, cp->daddr.ip, rt_mode,
- NULL, iph);
+ NULL, ciph);
if (local < 0)
goto tx_error;
rt = skb_rtable(skb);
@@ -1562,13 +1563,13 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
}
/* copy-on-write the packet before mangling it */
- if (skb_ensure_writable(skb, offset))
+ if (skb_ensure_writable(skb, wlen))
goto tx_error;
if (skb_cow(skb, rt->dst.dev->hard_header_len))
goto tx_error;
- ip_vs_nat_icmp(skb, pp, cp, 0);
+ ip_vs_nat_icmp(skb, pp, cp, 0, toff);
/* Another hack: avoid icmp_send in ip_fragment */
skb->ignore_df = 1;
@@ -1584,8 +1585,9 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
#ifdef CONFIG_IP_VS_IPV6
int
ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
- struct ip_vs_protocol *pp, int offset, unsigned int hooknum,
- struct ip_vs_iphdr *ipvsh)
+ struct ip_vs_protocol *pp, unsigned int toff,
+ unsigned int wlen, unsigned int hooknum,
+ struct ip_vs_iphdr *ciph)
{
struct rt6_info *rt; /* Route to the other host */
int rc;
@@ -1597,7 +1599,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
translate address/port back */
if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ) {
if (cp->packet_xmit)
- rc = cp->packet_xmit(skb, cp, pp, ipvsh);
+ rc = cp->packet_xmit(skb, cp, pp, ciph);
else
rc = NF_ACCEPT;
/* do not touch skb anymore */
@@ -1614,7 +1616,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
IP_VS_RT_MODE_LOCAL | IP_VS_RT_MODE_NON_LOCAL |
IP_VS_RT_MODE_RDR : IP_VS_RT_MODE_NON_LOCAL;
local = __ip_vs_get_out_rt_v6(cp->ipvs, cp->af, skb, cp->dest,
- &cp->daddr.in6, NULL, ipvsh, 0, rt_mode);
+ &cp->daddr.in6, NULL, ciph, 0, rt_mode);
if (local < 0)
goto tx_error;
rt = dst_rt6_info(skb_dst(skb));
@@ -1646,13 +1648,13 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
}
/* copy-on-write the packet before mangling it */
- if (skb_ensure_writable(skb, offset))
+ if (skb_ensure_writable(skb, wlen))
goto tx_error;
if (skb_cow(skb, rt->dst.dev->hard_header_len))
goto tx_error;
- ip_vs_nat_icmp_v6(skb, pp, cp, 0);
+ ip_vs_nat_icmp_v6(skb, pp, cp, 0, toff, ciph);
/* Another hack: avoid icmp_send in ip_fragment */
skb->ignore_df = 1;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 049/337] ipvs: do not mangle ICMP replies for non-first fragments
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (46 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 048/337] ipvs: fix places with wrong packet offsets Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 050/337] netfilter: nft_payload: fix mask build for partial field offload Greg Kroah-Hartman
` (295 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Julian Anastasov, Pablo Neira Ayuso,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Julian Anastasov <ja@ssi.bg>
[ Upstream commit 342e24a339b90e8e339a0f8c151ca479b8565661 ]
Sashiko warns that ip_vs_nat_icmp() unconditionally mangles the
payload for embedded non-first IPv4 fragments. The problem is
in the very old inverted pp->dont_defrag check which should not
continue when embedded is a non-first TCP/UDP/SCTP fragment.
Check for embedded non-first fragment is also missing from
ip_vs_out_icmp_v6(), it is needed before any connection
lookups that expect ports after the network headers.
Drop the blocking code from ip_vs_in_icmp_v6() which prevents
ICMPv6 from local clients to use non-MASQ forwarding.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Link: https://sashiko.dev/#/patchset/20260720201122.79882-1-ja%40ssi.bg
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/ip_vs.h | 11 +++---
net/netfilter/ipvs/ip_vs_core.c | 61 ++++++++++++---------------------
net/netfilter/ipvs/ip_vs_xmit.c | 28 +++++++++++----
3 files changed, 48 insertions(+), 52 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index a44979db80134..6935ec09af24d 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -1627,8 +1627,7 @@ int ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph);
int ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, unsigned int toff,
- unsigned int wlen, unsigned int hooknum,
- struct ip_vs_iphdr *ciph);
+ unsigned int hooknum, struct ip_vs_iphdr *ciph);
void ip_vs_dest_dst_rcu_free(struct rcu_head *head);
#ifdef CONFIG_IP_VS_IPV6
@@ -1642,8 +1641,7 @@ int ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, struct ip_vs_iphdr *iph);
int ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, unsigned int toff,
- unsigned int wlen, unsigned int hooknum,
- struct ip_vs_iphdr *ciph);
+ unsigned int hooknum, struct ip_vs_iphdr *ciph);
#endif
#ifdef CONFIG_SYSCTL
@@ -1708,12 +1706,13 @@ static inline char ip_vs_fwd_tag(struct ip_vs_conn *cp)
}
void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
- struct ip_vs_conn *cp, int dir, unsigned int toff);
+ struct ip_vs_conn *cp, int dir, unsigned int toff,
+ bool has_ports);
#ifdef CONFIG_IP_VS_IPV6
void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
struct ip_vs_conn *cp, int dir, unsigned int toff,
- struct ip_vs_iphdr *ciph);
+ bool has_ports, struct ip_vs_iphdr *ciph);
#endif
static inline __wsum ip_vs_check_diff4(__be32 old, __be32 new, __wsum oldsum)
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 784c00ec01ef7..6207a91e93f3b 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -746,7 +746,8 @@ static int ip_vs_route_me_harder(struct netns_ipvs *ipvs, int af,
* - inout: 1=in->out, 0=out->in
*/
void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
- struct ip_vs_conn *cp, int inout, unsigned int toff)
+ struct ip_vs_conn *cp, int inout, unsigned int toff,
+ bool has_ports)
{
struct iphdr *iph = ip_hdr(skb);
struct icmphdr *icmph = (struct icmphdr *)(skb->data + toff);
@@ -766,8 +767,7 @@ void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
}
/* the TCP/UDP/SCTP port */
- if (IPPROTO_TCP == ciph->protocol || IPPROTO_UDP == ciph->protocol ||
- IPPROTO_SCTP == ciph->protocol) {
+ if (has_ports) {
__be16 *ports = (void *)ciph + ciph->ihl*4;
if (inout)
@@ -792,18 +792,15 @@ void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
#ifdef CONFIG_IP_VS_IPV6
void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
struct ip_vs_conn *cp, int inout, unsigned int toff,
- struct ip_vs_iphdr *ciph)
+ bool has_ports, struct ip_vs_iphdr *ciph)
{
struct ipv6hdr *iph = ipv6_hdr(skb);
- int protocol;
struct icmp6hdr *icmph;
struct ipv6hdr *cih;
icmph = (struct icmp6hdr *)(skb->data + toff);
cih = (struct ipv6hdr *)(skb->data + ciph->off);
- protocol = ciph->protocol;
-
if (inout) {
iph->saddr = cp->vaddr.in6;
cih->daddr = cp->vaddr.in6;
@@ -813,9 +810,7 @@ void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
}
/* the TCP/UDP/SCTP port */
- if (!ciph->fragoffs &&
- (protocol == IPPROTO_TCP || protocol == IPPROTO_UDP ||
- protocol == IPPROTO_SCTP)) {
+ if (has_ports) {
__be16 *ports = (void *)(skb->data + ciph->len);
IP_VS_DBG(11, "%s() changed port %d to %d\n", __func__,
@@ -857,6 +852,7 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
int iproto = af == AF_INET6 ? IPPROTO_ICMPV6 : IPPROTO_ICMP;
unsigned int verdict = NF_DROP;
unsigned int ctoff = ciph->len;
+ bool has_ports = false;
if (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ)
goto after_nat;
@@ -870,17 +866,19 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
}
if (ciph->protocol == IPPROTO_TCP || ciph->protocol == IPPROTO_UDP ||
- ciph->protocol == IPPROTO_SCTP)
+ ciph->protocol == IPPROTO_SCTP) {
ctoff += 2 * sizeof(__u16);
+ has_ports = true;
+ }
if (skb_ensure_writable(skb, ctoff))
goto out;
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6)
- ip_vs_nat_icmp_v6(skb, pp, cp, 1, toff, ciph);
+ ip_vs_nat_icmp_v6(skb, pp, cp, 1, toff, has_ports, ciph);
else
#endif
- ip_vs_nat_icmp(skb, pp, cp, 1, toff);
+ ip_vs_nat_icmp(skb, pp, cp, 1, toff, has_ports);
if (ip_vs_route_me_harder(cp->ipvs, af, skb, hooknum))
goto out;
@@ -964,8 +962,7 @@ static int ip_vs_out_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb,
return NF_ACCEPT;
/* Is the embedded protocol header present? */
- if (unlikely(cih->frag_off & htons(IP_OFFSET) &&
- pp->dont_defrag))
+ if (unlikely(cih->frag_off & htons(IP_OFFSET) && !pp->dont_defrag))
return NF_ACCEPT;
IP_VS_DBG_PKT(11, AF_INET, pp, skb, offset,
@@ -1029,6 +1026,10 @@ static int ip_vs_out_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb,
if (!pp)
return NF_ACCEPT;
+ /* Is the embedded protocol header present? */
+ if (unlikely(ciph.fragoffs && !pp->dont_defrag))
+ return NF_ACCEPT;
+
/* The embedded headers contain source and dest in reverse order */
cp = INDIRECT_CALL_1(pp->conn_out_get, ip_vs_conn_out_get_proto,
ipvs, AF_INET6, skb, &ciph);
@@ -1687,8 +1688,7 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
pp = pd->pp;
/* Is the embedded protocol header present? */
- if (unlikely(cih->frag_off & htons(IP_OFFSET) &&
- pp->dont_defrag))
+ if (unlikely(cih->frag_off & htons(IP_OFFSET) && !pp->dont_defrag))
return NF_ACCEPT;
IP_VS_DBG_PKT(11, AF_INET, pp, skb, offset,
@@ -1696,7 +1696,6 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
offset2 = offset;
ip_vs_fill_iph_skb_icmp(AF_INET, skb, offset, !tunnel, &ciph);
- offset = ciph.len;
/* The embedded headers contain source and dest in reverse order.
* For IPIP/UDP/GRE tunnel this is error for request, not for reply.
@@ -1790,11 +1789,7 @@ ip_vs_in_icmp(struct netns_ipvs *ipvs, struct sk_buff *skb, int *related,
/* do the statistics and put it back */
ip_vs_in_stats(cp, skb);
- if (IPPROTO_TCP == cih->protocol || IPPROTO_UDP == cih->protocol ||
- IPPROTO_SCTP == cih->protocol)
- offset += 2 * sizeof(__u16);
- verdict = ip_vs_icmp_xmit(skb, cp, pp, iph->len, offset, hooknum,
- &ciph);
+ verdict = ip_vs_icmp_xmit(skb, cp, pp, iph->len, hooknum, &ciph);
out:
if (likely(!new_cp))
@@ -1854,8 +1849,8 @@ static int ip_vs_in_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb,
return NF_ACCEPT;
pp = pd->pp;
- /* Cannot handle fragmented embedded protocol */
- if (ciph.fragoffs)
+ /* Is the embedded protocol header present? */
+ if (ciph.fragoffs && !pp->dont_defrag)
return NF_ACCEPT;
IP_VS_DBG_PKT(11, AF_INET6, pp, skb, offset,
@@ -1879,13 +1874,6 @@ static int ip_vs_in_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb,
new_cp = true;
}
- /* VS/TUN, VS/DR and LOCALNODE just let it go */
- if ((hooknum == NF_INET_LOCAL_OUT) &&
- (IP_VS_FWD_METHOD(cp) != IP_VS_CONN_F_MASQ)) {
- verdict = NF_ACCEPT;
- goto out;
- }
-
verdict = NF_DROP;
/* Ensure the checksum is correct */
@@ -1901,14 +1889,7 @@ static int ip_vs_in_icmp_v6(struct netns_ipvs *ipvs, struct sk_buff *skb,
/* do the statistics and put it back */
ip_vs_in_stats(cp, skb);
- /* Need to mangle contained IPv6 header in ICMPv6 packet */
- offset = ciph.len;
- if (IPPROTO_TCP == ciph.protocol || IPPROTO_UDP == ciph.protocol ||
- IPPROTO_SCTP == ciph.protocol)
- offset += 2 * sizeof(__u16); /* Also mangle ports */
-
- verdict = ip_vs_icmp_xmit_v6(skb, cp, pp, iph->len, offset, hooknum,
- &ciph);
+ verdict = ip_vs_icmp_xmit_v6(skb, cp, pp, iph->len, hooknum, &ciph);
out:
if (likely(!new_cp))
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 05e6164c45039..b85420a3a14ce 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -1500,13 +1500,14 @@ ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
int
ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, unsigned int toff,
- unsigned int wlen, unsigned int hooknum,
- struct ip_vs_iphdr *ciph)
+ unsigned int hooknum, struct ip_vs_iphdr *ciph)
{
struct rtable *rt; /* Route to the other host */
int rc;
int local;
int rt_mode, was_input;
+ bool has_ports = false;
+ unsigned int wlen;
/* The ICMP packet for VS/TUN, VS/DR and LOCALNODE will be
forwarded directly here, because there is no need to
@@ -1562,6 +1563,13 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
goto tx_error;
}
+ wlen = ciph->len;
+ if (ciph->protocol == IPPROTO_TCP || ciph->protocol == IPPROTO_UDP ||
+ ciph->protocol == IPPROTO_SCTP) {
+ wlen += 2 * sizeof(__u16); /* Also mangle ports */
+ has_ports = true;
+ }
+
/* copy-on-write the packet before mangling it */
if (skb_ensure_writable(skb, wlen))
goto tx_error;
@@ -1569,7 +1577,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
if (skb_cow(skb, rt->dst.dev->hard_header_len))
goto tx_error;
- ip_vs_nat_icmp(skb, pp, cp, 0, toff);
+ ip_vs_nat_icmp(skb, pp, cp, 0, toff, has_ports);
/* Another hack: avoid icmp_send in ip_fragment */
skb->ignore_df = 1;
@@ -1586,10 +1594,11 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
int
ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, unsigned int toff,
- unsigned int wlen, unsigned int hooknum,
- struct ip_vs_iphdr *ciph)
+ unsigned int hooknum, struct ip_vs_iphdr *ciph)
{
+ bool has_ports = false;
struct rt6_info *rt; /* Route to the other host */
+ unsigned int wlen;
int rc;
int local;
int rt_mode;
@@ -1647,6 +1656,13 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
goto tx_error;
}
+ wlen = ciph->len;
+ if (ciph->protocol == IPPROTO_TCP || ciph->protocol == IPPROTO_UDP ||
+ ciph->protocol == IPPROTO_SCTP) {
+ wlen += 2 * sizeof(__u16); /* Also mangle ports */
+ has_ports = true;
+ }
+
/* copy-on-write the packet before mangling it */
if (skb_ensure_writable(skb, wlen))
goto tx_error;
@@ -1654,7 +1670,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
if (skb_cow(skb, rt->dst.dev->hard_header_len))
goto tx_error;
- ip_vs_nat_icmp_v6(skb, pp, cp, 0, toff, ciph);
+ ip_vs_nat_icmp_v6(skb, pp, cp, 0, toff, has_ports, ciph);
/* Another hack: avoid icmp_send in ip_fragment */
skb->ignore_df = 1;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 050/337] netfilter: nft_payload: fix mask build for partial field offload
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (47 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 049/337] ipvs: do not mangle ICMP replies for non-first fragments Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 051/337] rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled Greg Kroah-Hartman
` (294 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity,
Xiang Mei (Microsoft), Pablo Neira Ayuso, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei (Microsoft) <xmei5@asu.edu>
[ Upstream commit 39e88f28fb32bf02bd4b525c24c842c9cff5663d ]
nft_payload_offload_mask() builds the offload match mask for a payload
expression that covers only part of a header field. For a partial IPv6
address match (field_len = 16, priv_len = 1) that shift is 1 << 120, which
is undefined on the 32-bit int operand. It also trims only one word, so
the remaining words stay 0xffffffff (and when priv_len is a multiple of 4
the trim is skipped entirely), leaving the mask covering more bytes than
the rule matches.
UBSAN: shift-out-of-bounds in net/netfilter/nft_payload.c:278:20
shift exponent 120 is too large for 32-bit type 'int'
...
The match is byte-granular and struct nft_data is zero-initialised, so the
correct mask is simply the first priv_len bytes set to 0xff. Set those
bytes directly and drop the word/shift trimming; this removes the undefined
shift and no longer over-masks the trailing bytes.
Fixes: a5d45bc0dc50 ("netfilter: nftables_offload: build mask based from the matching bytes")
Reported-by: AutonomousCodeSecurity@microsoft.com
Signed-off-by: Xiang Mei (Microsoft) <xmei5@asu.edu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netfilter/nft_payload.c | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)
diff --git a/net/netfilter/nft_payload.c b/net/netfilter/nft_payload.c
index 36c31ad2d64c1..15feb49e0b663 100644
--- a/net/netfilter/nft_payload.c
+++ b/net/netfilter/nft_payload.c
@@ -253,9 +253,7 @@ static int nft_payload_dump(struct sk_buff *skb,
static bool nft_payload_offload_mask(struct nft_offload_reg *reg,
u32 priv_len, u32 field_len)
{
- unsigned int remainder, delta, k;
struct nft_data mask = {};
- __be32 remainder_mask;
if (priv_len == field_len) {
memset(®->mask, 0xff, priv_len);
@@ -264,15 +262,7 @@ static bool nft_payload_offload_mask(struct nft_offload_reg *reg,
return false;
}
- memset(&mask, 0xff, field_len);
- remainder = priv_len % sizeof(u32);
- if (remainder) {
- k = priv_len / sizeof(u32);
- delta = field_len - priv_len;
- remainder_mask = htonl(~((1 << (delta * BITS_PER_BYTE)) - 1));
- mask.data[k] = (__force u32)remainder_mask;
- }
-
+ memset(&mask, 0xff, priv_len);
memcpy(®->mask, &mask, field_len);
return true;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 051/337] rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (48 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 050/337] netfilter: nft_payload: fix mask build for partial field offload Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 052/337] rds: tcp: hold the RCU lock across ipv6_chk_addr() in rds_tcp_laddr_check() Greg Kroah-Hartman
` (293 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ilia Gavrilov, Allison Henderson,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ilia Gavrilov <Ilia.Gavrilov@infotecs.ru>
[ Upstream commit 9c805e592a29be9e4e61ff1bd567da04aa8fd6f9 ]
When booting with the 'ipv6.disable=1' parameter, inet6_addr_lst
is never initialized because inet6_init() exits before addrconf_init()
is called to initialize it. An attempt to bind an RDS socket to
an ipv6 address results in a crash in __ipv6_chk_addr_and_flags()
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
RIP: 0010:__ipv6_chk_addr_and_flags+0x1df/0x7e0
Call Trace:
<TASK>
ipv6_chk_addr+0x3b/0x50
rds_tcp_laddr_check+0x155/0x3b0 [rds_tcp]
rds_trans_get_preferred+0x15d/0x2d0 [rds]
? trace_hardirqs_on+0x2d/0x110
rds_bind+0x1433/0x1d60 [rds]
? rds_remove_bound+0xd50/0xd50 [rds]
? aa_af_perm+0x250/0x250
? __might_fault+0xde/0x190
? __sys_bind+0x1dc/0x210
__sys_bind+0x1dc/0x210
? __ia32_sys_socketpair+0x100/0x100
? restore_fpregs_from_fpstate+0x53/0x100
__x64_sys_bind+0x73/0xb0
? syscall_enter_from_user_mode+0x1c/0x50
do_syscall_64+0x34/0x80
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7f47f8269ea9
</TASK>
The following code reproduces the issue:
struct sockaddr_in6 addr;
s = socket(PF_RDS, SOCK_SEQPACKET, 0);
memset(&addr, 0, sizeof(addr));
inet_pton(AF_INET6, ADDRESS, &addr.sin6_addr);
addr.sin6_family = AF_INET6;
addr.sin6_port = htons(PORT);
bind(s, &addr, sizeof(addr));
Found by InfoTeCS on behalf of Linux Verification Center
(linuxtesting.org) with Syzkaller.
Fixes: eee2fa6ab322 ("rds: Changing IP address internal representation to struct in6_addr")
Fixes: 1e2b44e78eea ("rds: Enable RDS IPv6 support")
Signed-off-by: Ilia Gavrilov <Ilia.Gavrilov@infotecs.ru>
Reviewed-by: Allison Henderson <achender@kernel.org>
Link: https://patch.msgid.link/20260709162723.367523-1-Ilia.Gavrilov@infotecs.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 78f75d632f74 ("rds: tcp: hold the RCU lock across ipv6_chk_addr() in rds_tcp_laddr_check()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/rds/ib.c | 4 ++++
net/rds/ib_cm.c | 4 ++++
net/rds/tcp.c | 8 +++++---
3 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/net/rds/ib.c b/net/rds/ib.c
index ce5be43c5fbac..1061bcf7d1315 100644
--- a/net/rds/ib.c
+++ b/net/rds/ib.c
@@ -431,6 +431,10 @@ static int rds_ib_laddr_check_cm(struct net *net, const struct in6_addr *addr,
sa = (struct sockaddr *)&sin;
} else {
#if IS_ENABLED(CONFIG_IPV6)
+ if (!ipv6_mod_enabled()) {
+ ret = -EADDRNOTAVAIL;
+ goto out;
+ }
memset(&sin6, 0, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_addr = *addr;
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index 5289afbb61aa7..e50e01abb0799 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -810,6 +810,10 @@ int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
dp = event->param.conn.private_data;
if (isv6) {
#if IS_ENABLED(CONFIG_IPV6)
+ if (!ipv6_mod_enabled()) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
dp_cmn = &dp->ricp_v6.dp_cmn;
saddr6 = &dp->ricp_v6.dp_saddr;
daddr6 = &dp->ricp_v6.dp_daddr;
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index 06a2d8d48bbac..87e6ab0e93b71 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -342,9 +342,11 @@ int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr,
rcu_read_unlock();
}
#if IS_ENABLED(CONFIG_IPV6)
- ret = ipv6_chk_addr(net, addr, dev, 0);
- if (ret)
- return 0;
+ if (ipv6_mod_enabled()) {
+ ret = ipv6_chk_addr(net, addr, dev, 0);
+ if (ret)
+ return 0;
+ }
#endif
return -EADDRNOTAVAIL;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 052/337] rds: tcp: hold the RCU lock across ipv6_chk_addr() in rds_tcp_laddr_check()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (49 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 051/337] rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 053/337] pinctrl-amd: Dont clear S4 wake bits at probe Greg Kroah-Hartman
` (292 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Weiming Shi, Xiang Mei,
Allison Henderson, Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiang Mei <xmei5@asu.edu>
[ Upstream commit 78f75d632f74b8de0f081a128588f7c37d0d1164 ]
rds_tcp_laddr_check() looks up a scoped IPv6 interface with
dev_get_by_index_rcu(), drops the RCU read-side lock, and only then
passes the bare struct net_device * into ipv6_chk_addr().
dev_get_by_index_rcu() only keeps the device alive within the same RCU
read-side section. After rcu_read_unlock(), a concurrent RTM_DELLINK can
free the net_device; ipv6_chk_addr() then dereferences the stale pointer
in __ipv6_chk_addr_and_flags() (e.g. l3mdev_master_dev_rcu(dev)), reading
freed memory.
Keep the RCU read-side lock held across the ipv6_chk_addr() call instead
of dropping it right after the lookup, so the device cannot be freed
while it is in use.
BUG: KASAN: slab-use-after-free in __ipv6_chk_addr_and_flags (... net/ipv6/addrconf.c:1998)
Read of size 8 at addr ffff8880106ec000 by task exploit/153
Call Trace:
...
kasan_report (mm/kasan/report.c:595)
__ipv6_chk_addr_and_flags (... net/ipv6/addrconf.c:1998)
ipv6_chk_addr (net/ipv6/addrconf.c:2031 net/ipv6/addrconf.c:1972)
rds_tcp_laddr_check (net/rds/tcp.c:370)
rds_bind (net/rds/bind.c:248)
__sys_bind (net/socket.c:1920)
__x64_sys_bind (net/socket.c:1956)
do_syscall_64 (arch/x86/entry/syscall_64.c:63)
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
Fixes: eee2fa6ab322 ("rds: Changing IP address internal representation to struct in6_addr")
Reported-by: Weiming Shi <bestswngs@gmail.com>
Signed-off-by: Xiang Mei <xmei5@asu.edu>
Reviewed-by: Allison Henderson <achender@kernel.org>
Link: https://patch.msgid.link/20260722210203.565803-1-xmei5@asu.edu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/rds/tcp.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index 87e6ab0e93b71..1980a197034ba 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -331,23 +331,25 @@ int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr,
/* If the scope_id is specified, check only those addresses
* hosted on the specified interface.
*/
+ rcu_read_lock();
if (scope_id != 0) {
- rcu_read_lock();
dev = dev_get_by_index_rcu(net, scope_id);
/* scope_id is not valid... */
if (!dev) {
rcu_read_unlock();
return -EADDRNOTAVAIL;
}
- rcu_read_unlock();
}
#if IS_ENABLED(CONFIG_IPV6)
if (ipv6_mod_enabled()) {
ret = ipv6_chk_addr(net, addr, dev, 0);
- if (ret)
+ if (ret) {
+ rcu_read_unlock();
return 0;
+ }
}
#endif
+ rcu_read_unlock();
return -EADDRNOTAVAIL;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 053/337] pinctrl-amd: Dont clear S4 wake bits at probe
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (50 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 052/337] rds: tcp: hold the RCU lock across ipv6_chk_addr() in rds_tcp_laddr_check() Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 054/337] scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer Greg Kroah-Hartman
` (291 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Mario Limonciello, Linus Walleij,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mario Limonciello <mario.limonciello@amd.com>
[ Upstream commit ffe8a0c6b55285ceaf2f42fc20c3a0594d14f1e9 ]
commit 6bc3462a0f5e ("pinctrl: amd: Mask wake bits on probe again")
introduced a regression where Wake-on-LAN no longer works after suspend
or shutdown on some AMD platforms.
Firmware-programmed S4 wake bits for devices like PCIe NICs using PCI
PME are cleared at probe, but nothing restores them. Unlike S0i3/S3 wake
sources that use enable_irq_wake() -> amd_gpio_irq_set_wake(), PCIe PME
does not use GPIO IRQ infrastructure and relies on firmware configuration.
The original intent of commit 6bc3462a0f5e ("pinctrl: amd: Mask wake
bits on probe again") was to clear spurious wake bits left by firmware
to prevent unwanted wakeups. However, S4 wake bits are used for
hardware-level wake sources like WoL that bypass the kernel's IRQ wake
API.
Fix by preserving S4 wake bits at probe and only clearing S0i3/S3 bits:
- Firmware-configured S4 wake sources (WoL) continue working
- Kernel maintains control of S3/S0i3 wake policy via set_wake()
- S3-only wake sources work correctly per commit f31f33dbb3ba ("pinctrl:
amd: Take suspend type into consideration which pins are non-wake")
The trade-off is that firmware-programmed spurious S4 wake bits remain
set, but this is less problematic than breaking WoL.
Fixes: 6bc3462a0f5e ("pinctrl: amd: Mask wake bits on probe again")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/pinctrl-amd.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index debf36ce57857..65006eceaf399 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -869,8 +869,7 @@ static void amd_gpio_irq_init(struct amd_gpio *gpio_dev)
u32 pin_reg, mask;
int i;
- mask = BIT(WAKE_CNTRL_OFF_S0I3) | BIT(WAKE_CNTRL_OFF_S3) |
- BIT(WAKE_CNTRL_OFF_S4);
+ mask = BIT(WAKE_CNTRL_OFF_S0I3) | BIT(WAKE_CNTRL_OFF_S3);
for (i = 0; i < desc->npins; i++) {
int pin = desc->pins[i].number;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 054/337] scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (51 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 053/337] pinctrl-amd: Dont clear S4 wake bits at probe Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 055/337] scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer Greg Kroah-Hartman
` (290 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko AI, HyeongJun An,
Chris Leech, Martin K. Petersen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: HyeongJun An <sammiee5311@gmail.com>
[ Upstream commit 98b87885de4b7f605533a2860685f5689fce8e82 ]
iscsi_scsi_cmd_rsp() copies the sense data of a SCSI Response from the
target-supplied data segment. The segment carries a 2-byte sense length
followed by the sense bytes, so it must hold 2 + senselen bytes, but the
bounds check only requires datalen >= senselen:
senselen = get_unaligned_be16(data);
if (datalen < senselen)
goto invalid_datalen;
memcpy(sc->sense_buffer, data + 2,
min_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE));
A target that returns a SCSI Response whose datalen equals senselen
(with senselen <= SCSI_SENSE_BUFFERSIZE) makes the memcpy() from data +
2 read up to two bytes past the received data. Those bytes are stale
conn->data contents and end up in the command's sense buffer, which is
returned to userspace.
Account for the 2-byte sense length prefix in the check.
Fixes: 7996a778ff8c ("[SCSI] iscsi: add libiscsi")
Suggested-by: Sashiko AI <sashiko-bot@kernel.org>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: HyeongJun An <sammiee5311@gmail.com>
Acked-by: Chris Leech <cleech@redhat.com>
Link: https://patch.msgid.link/20260714104934.1404423-1-sammiee5311@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/libiscsi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 29af3722ea220..0f169f243475f 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -918,7 +918,7 @@ static void iscsi_scsi_cmd_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
}
senselen = get_unaligned_be16(data);
- if (datalen < senselen)
+ if (datalen < senselen + 2)
goto invalid_datalen;
memcpy(sc->sense_buffer, data + 2,
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 055/337] scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (52 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 054/337] scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 056/337] scsi: libsas: Fix HA resume deadlock and hisi_sas disk-wake race Greg Kroah-Hartman
` (289 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chris Leech, HyeongJun An,
Martin K. Petersen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: HyeongJun An <sammiee5311@gmail.com>
[ Upstream commit c1dea15f819cded9b3faf58f8bec72323568b6e6 ]
iscsi_tcp_hdr_dissect() receives the data segment of several PDU types
into the fixed-size conn->data buffer, which is allocated for
ISCSI_DEF_MAX_RECV_SEG_LEN (8192) bytes. For the LOGIN_RSP, TEXT_RSP,
REJECT and ASYNC_EVENT opcodes the dissect path already rejects a PDU
whose DataSegmentLength exceeds that buffer.
The SCSI Command Response (ISCSI_OP_SCSI_CMD_RSP) path also copies its
data segment (sense/response data) into conn->data via
iscsi_tcp_data_recv_prep(), but it does so without the same check. The
only upstream bound on in.datalen is conn->max_recv_dlength, the
initiator's advertised MaxRecvDataSegmentLength, which is commonly
negotiated well above 8192 (open-iscsi defaults to 262144). A target
that returns a SCSI Response with a DataSegmentLength between 8193 and
max_recv_dlength therefore overflows the 8192-byte conn->data buffer.
Once the same bound applies, ISCSI_OP_SCSI_CMD_RSP is handled exactly
like those responses: bound the data segment, receive it into conn->data
when present, and otherwise complete the PDU with no data. Fold the
opcode into that case group rather than duplicating the check.
Fixes: a081c13e39b5 ("[SCSI] iscsi_tcp: split module into lib and lld")
Suggested-by: Chris Leech <cleech@redhat.com>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: HyeongJun An <sammiee5311@gmail.com>
Acked-by: Chris Leech <cleech@redhat.com>
Link: https://patch.msgid.link/20260716065848.1653431-1-sammiee5311@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/libiscsi_tcp.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/drivers/scsi/libiscsi_tcp.c b/drivers/scsi/libiscsi_tcp.c
index c182aa83f2c93..4d23205129432 100644
--- a/drivers/scsi/libiscsi_tcp.c
+++ b/drivers/scsi/libiscsi_tcp.c
@@ -763,13 +763,6 @@ iscsi_tcp_hdr_dissect(struct iscsi_conn *conn, struct iscsi_hdr *hdr)
rc = __iscsi_complete_pdu(conn, hdr, NULL, 0);
spin_unlock(&conn->session->back_lock);
break;
- case ISCSI_OP_SCSI_CMD_RSP:
- if (tcp_conn->in.datalen) {
- iscsi_tcp_data_recv_prep(tcp_conn);
- return 0;
- }
- rc = iscsi_complete_pdu(conn, hdr, NULL, 0);
- break;
case ISCSI_OP_R2T:
if (ahslen) {
rc = ISCSI_ERR_AHSLEN;
@@ -777,6 +770,7 @@ iscsi_tcp_hdr_dissect(struct iscsi_conn *conn, struct iscsi_hdr *hdr)
}
rc = iscsi_tcp_r2t_rsp(conn, hdr);
break;
+ case ISCSI_OP_SCSI_CMD_RSP:
case ISCSI_OP_LOGIN_RSP:
case ISCSI_OP_TEXT_RSP:
case ISCSI_OP_REJECT:
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 056/337] scsi: libsas: Fix HA resume deadlock and hisi_sas disk-wake race
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (53 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 055/337] scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 057/337] smb: client: fix buffer leaks in SMB1 read and write Greg Kroah-Hartman
` (288 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Xingui Yang, John Garry,
Martin K. Petersen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xingui Yang <yangxingui@huawei.com>
[ Upstream commit 3dbbbf656b850c9c8de05df6ad4a1dfc6ff02845 ]
Commit fbefe22811c3 ("scsi: libsas: Don't always drain event workqueue
for HA resume") introduced sas_resume_ha_no_sync() to avoid a deadlock:
the PHYE_RESUME_TIMEOUT handler, running on the HA event workqueue,
calls sas_deform_port() -> sas_destruct_devices(), which removes SCSI
devices and waits for the host to become runtime-active. But the host
cannot resume until sas_resume_ha() -> sas_drain_work() returns, and the
drain is blocked on that very handler.
However skipping the drain reintroduces a race: hisi_sas returns from
resume before all PHY UP work and libsas discovery work finish. The
controller may then autosuspend while disks are still waking up. The
disks issue IO to a suspended controller, the IO fails, and the disks
get disabled.
Fix the deadlock at its source by moving the PHYE_RESUME_TIMEOUT
notification to after sas_drain_work(). By then the host resume is about
to complete, so device removal through device_link no longer blocks on
the resume and the cycle is broken.
With the deadlock gone, restore sas_resume_ha() (the draining variant)
in hisi_sas and remove sas_resume_ha_no_sync().
The reorder is safe for the other libsas consumers (isci, pm8001,
aic94xx, mvsas). During suspend, sas_suspend_devices() calls
sas_notify_lldd_dev_gone() for each device, which sets dev->lldd_dev to
NULL. When scsi_unblock_requests re-enables I/O in resume, any I/O to a
timed-out phy's disk is immediately rejected by the LLDD before reaching
hardware: isci returns SAS_DEVICE_UNKNOWN (mapped to DID_BAD_TARGET),
and pm8001 returns SAS_PHY_DOWN (mapped to DID_NO_CONNECT). Both
complete directly via scsi_done() without entering SCSI EH. This is
identical in both the old and new ordering since lldd_dev_gone runs
during suspend, before resume. The reorder only affects when the
PHYE_RESUME_TIMEOUT handler runs (synchronized by sas_drain_work()
vs. asynchronous after resume returns), not whether I/O can reach the
device. aic94xx and mvsas do not register any PM ops and never reach
this code path.
Fixes: fbefe22811c3 ("scsi: libsas: Don't always drain event workqueue for HA resume")
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://patch.msgid.link/20260716081145.3950172-1-yangxingui@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 10 +------
drivers/scsi/libsas/sas_init.c | 37 +++++++++++++-------------
include/scsi/libsas.h | 1 -
3 files changed, 19 insertions(+), 29 deletions(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index e958b588d078f..b7dd4efca0c7f 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -5219,15 +5219,7 @@ static int _resume_v3_hw(struct device *device)
return rc;
}
phys_init_v3_hw(hisi_hba);
-
- /*
- * If a directly-attached disk is removed during suspend, a deadlock
- * may occur, as the PHYE_RESUME_TIMEOUT processing will require the
- * hisi_hba->device to be active, which can only happen when resume
- * completes. So don't wait for the HA event workqueue to drain upon
- * resume.
- */
- sas_resume_ha_no_sync(sha);
+ sas_resume_ha(sha);
clear_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags);
dev_warn(dev, "end of resuming controller\n");
diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c
index 8566bb1208a05..ac157ab6a3011 100644
--- a/drivers/scsi/libsas/sas_init.c
+++ b/drivers/scsi/libsas/sas_init.c
@@ -409,7 +409,7 @@ static void sas_resume_insert_broadcast_ha(struct sas_ha_struct *ha)
}
}
-static void _sas_resume_ha(struct sas_ha_struct *ha, bool drain)
+void sas_resume_ha(struct sas_ha_struct *ha)
{
const unsigned long tmo = msecs_to_jiffies(25000);
int i;
@@ -425,6 +425,23 @@ static void _sas_resume_ha(struct sas_ha_struct *ha, bool drain)
dev_info(ha->dev, "waiting up to 25 seconds for %d phy%s to resume\n",
i, i > 1 ? "s" : "");
wait_event_timeout(ha->eh_wait_q, phys_suspended(ha) == 0, tmo);
+
+ /*
+ * All phys are back up or timed out. Turn on I/O and drain
+ * pending work.
+ */
+ scsi_unblock_requests(ha->shost);
+ sas_drain_work(ha);
+
+ /*
+ * Send PHYE_RESUME_TIMEOUT after sas_drain_work(). The handler
+ * calls sas_deform_port() -> sas_destruct_devices(), which removes
+ * SCSI devices and, for LLDDs using device_link() PM sync, waits
+ * for the host to be runtime-active. Sending it before the drain
+ * would deadlock: the drain waits for the handler, the handler
+ * waits for host resume, and host resume waits for the drain to
+ * finish.
+ */
for (i = 0; i < ha->num_phys; i++) {
struct asd_sas_phy *phy = ha->sas_phy[i];
@@ -435,12 +452,6 @@ static void _sas_resume_ha(struct sas_ha_struct *ha, bool drain)
}
}
- /* all phys are back up or timed out, turn on i/o so we can
- * flush out disks that did not return
- */
- scsi_unblock_requests(ha->shost);
- if (drain)
- sas_drain_work(ha);
clear_bit(SAS_HA_RESUMING, &ha->state);
sas_queue_deferred_work(ha);
@@ -449,20 +460,8 @@ static void _sas_resume_ha(struct sas_ha_struct *ha, bool drain)
*/
sas_resume_insert_broadcast_ha(ha);
}
-
-void sas_resume_ha(struct sas_ha_struct *ha)
-{
- _sas_resume_ha(ha, true);
-}
EXPORT_SYMBOL(sas_resume_ha);
-/* A no-sync variant, which does not call sas_drain_ha(). */
-void sas_resume_ha_no_sync(struct sas_ha_struct *ha)
-{
- _sas_resume_ha(ha, false);
-}
-EXPORT_SYMBOL(sas_resume_ha_no_sync);
-
void sas_suspend_ha(struct sas_ha_struct *ha)
{
int i;
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 1324068dd950f..2e3fcae62e27e 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -676,7 +676,6 @@ extern int sas_register_ha(struct sas_ha_struct *);
extern int sas_unregister_ha(struct sas_ha_struct *);
extern void sas_prep_resume_ha(struct sas_ha_struct *sas_ha);
extern void sas_resume_ha(struct sas_ha_struct *sas_ha);
-extern void sas_resume_ha_no_sync(struct sas_ha_struct *sas_ha);
extern void sas_suspend_ha(struct sas_ha_struct *sas_ha);
int sas_phy_reset(struct sas_phy *phy, int hard_reset);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 057/337] smb: client: fix buffer leaks in SMB1 read and write
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (54 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 056/337] scsi: libsas: Fix HA resume deadlock and hisi_sas disk-wake race Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 058/337] spi: spi-cadence: supports transmission with bits_per_word of 16 and 32 Greg Kroah-Hartman
` (287 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Dawei Feng, Steve French,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dawei Feng <dawei.feng@seu.edu.cn>
[ Upstream commit 6a3e16d60e81a4aa3056ab15617036cfbea2e07d ]
CIFSSMBRead(), CIFSSMBWrite() and CIFSSMBWrite2() allocate a request
buffer before checking whether tcon->ses->server is NULL. If that
defensive check ever fails, the helper returns -ECONNABORTED without
releasing the request buffer.
Fix these leaks by releasing the allocated request buffer before
returning from these error paths. Use cifs_small_buf_release() for the
buffers allocated by small_smb_init() and cifs_buf_release() for the
buffer allocated by smb_init().
The bug was first flagged by an experimental analysis tool we are
developing for kernel memory-management bugs while analyzing
v6.13-rc1. The tool is still under development and is not yet publicly
available. Manual inspection confirms that the bug is still
present in v7.1.1.
An x86_64 allyesconfig build showed no new warnings.
Runtime validation used a temporary fault-injection hook to force
tcon->ses->server to NULL after request-buffer initialization. On the
unfixed kernel, the harness observed two leaked small request buffers and
one leaked large request buffer, with directed kmemleak dumps confirming
the CIFS buffer allocation stacks. After the fix, no CIFS request-buffer
deltas remained.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Dawei Feng <dawei.feng@seu.edu.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/client/cifssmb.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/fs/smb/client/cifssmb.c b/fs/smb/client/cifssmb.c
index 81a1c116e9031..882d535d17a4c 100644
--- a/fs/smb/client/cifssmb.c
+++ b/fs/smb/client/cifssmb.c
@@ -1436,8 +1436,10 @@ CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
/* tcon and ses pointer are checked in smb_init */
- if (tcon->ses->server == NULL)
+ if (!tcon->ses->server) {
+ cifs_small_buf_release(pSMB);
return -ECONNABORTED;
+ }
pSMB->AndXCommand = 0xFF; /* none */
pSMB->Fid = netfid;
@@ -1549,8 +1551,10 @@ CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
/* tcon and ses pointer are checked in smb_init */
- if (tcon->ses->server == NULL)
+ if (!tcon->ses->server) {
+ cifs_buf_release(pSMB);
return -ECONNABORTED;
+ }
pSMB->AndXCommand = 0xFF; /* none */
pSMB->Fid = netfid;
@@ -1816,8 +1820,10 @@ CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
/* tcon and ses pointer are checked in smb_init */
- if (tcon->ses->server == NULL)
+ if (!tcon->ses->server) {
+ cifs_small_buf_release(pSMB);
return -ECONNABORTED;
+ }
pSMB->AndXCommand = 0xFF; /* none */
pSMB->Fid = netfid;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 058/337] spi: spi-cadence: supports transmission with bits_per_word of 16 and 32
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (55 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 057/337] smb: client: fix buffer leaks in SMB1 read and write Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 059/337] spi: spi-cadence: Move TX FIFO full busy-wait into FIFO Greg Kroah-Hartman
` (286 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Jun Guo, Mark Brown, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jun Guo <jun.guo@cixtech.com>
[ Upstream commit 4e00135b2dd1d7924a58bffa551b6ceb3bd836f2 ]
The default FIFO data width of the Cadence SPI IP is 8 bits, but
the hardware supports configurations of 16 bits and 32 bits.
This patch enhances the driver to support communication with both
16-bits and 32-bits FIFO data widths.
Signed-off-by: Jun Guo <jun.guo@cixtech.com>
Link: https://patch.msgid.link/20251031073003.3289573-3-jun.guo@cixtech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Stable-dep-of: d9eadfce2fac ("spi: spi-cadence: Move TX FIFO full busy-wait into FIFO")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/spi/spi-cadence.c | 106 +++++++++++++++++++++++++++++++++-----
1 file changed, 93 insertions(+), 13 deletions(-)
diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c
index 914384348448d..fee908b7f327e 100644
--- a/drivers/spi/spi-cadence.c
+++ b/drivers/spi/spi-cadence.c
@@ -109,6 +109,7 @@
* @rxbuf: Pointer to the RX buffer
* @tx_bytes: Number of bytes left to transfer
* @rx_bytes: Number of bytes requested
+ * @n_bytes: Number of bytes per word
* @dev_busy: Device busy flag
* @is_decoded_cs: Flag for decoder property set or not
* @tx_fifo_depth: Depth of the TX FIFO
@@ -120,16 +121,24 @@ struct cdns_spi {
struct clk *pclk;
unsigned int clk_rate;
u32 speed_hz;
- const u8 *txbuf;
- u8 *rxbuf;
+ const void *txbuf;
+ void *rxbuf;
int tx_bytes;
int rx_bytes;
+ u8 n_bytes;
u8 dev_busy;
u32 is_decoded_cs;
unsigned int tx_fifo_depth;
struct reset_control *rstc;
};
+enum cdns_spi_frame_n_bytes {
+ CDNS_SPI_N_BYTES_NULL = 0,
+ CDNS_SPI_N_BYTES_U8 = 1,
+ CDNS_SPI_N_BYTES_U16 = 2,
+ CDNS_SPI_N_BYTES_U32 = 4
+};
+
/* Macros for the SPI controller read/write */
static inline u32 cdns_spi_read(struct cdns_spi *xspi, u32 offset)
{
@@ -305,6 +314,78 @@ static int cdns_spi_setup_transfer(struct spi_device *spi,
return 0;
}
+static u8 cdns_spi_n_bytes(struct spi_transfer *transfer)
+{
+ if (transfer->bits_per_word <= 8)
+ return CDNS_SPI_N_BYTES_U8;
+ else if (transfer->bits_per_word <= 16)
+ return CDNS_SPI_N_BYTES_U16;
+ else
+ return CDNS_SPI_N_BYTES_U32;
+}
+
+static inline void cdns_spi_reader(struct cdns_spi *xspi)
+{
+ u32 rxw = 0;
+
+ if (xspi->rxbuf && !IS_ALIGNED((uintptr_t)xspi->rxbuf, xspi->n_bytes)) {
+ pr_err("%s: rxbuf address is not aligned for %d bytes\n",
+ __func__, xspi->n_bytes);
+ return;
+ }
+
+ rxw = cdns_spi_read(xspi, CDNS_SPI_RXD);
+ if (xspi->rxbuf) {
+ switch (xspi->n_bytes) {
+ case CDNS_SPI_N_BYTES_U8:
+ *(u8 *)xspi->rxbuf = rxw;
+ break;
+ case CDNS_SPI_N_BYTES_U16:
+ *(u16 *)xspi->rxbuf = rxw;
+ break;
+ case CDNS_SPI_N_BYTES_U32:
+ *(u32 *)xspi->rxbuf = rxw;
+ break;
+ default:
+ pr_err("%s invalid n_bytes %d\n", __func__,
+ xspi->n_bytes);
+ return;
+ }
+ xspi->rxbuf = (u8 *)xspi->rxbuf + xspi->n_bytes;
+ }
+}
+
+static inline void cdns_spi_writer(struct cdns_spi *xspi)
+{
+ u32 txw = 0;
+
+ if (xspi->txbuf && !IS_ALIGNED((uintptr_t)xspi->txbuf, xspi->n_bytes)) {
+ pr_err("%s: txbuf address is not aligned for %d bytes\n",
+ __func__, xspi->n_bytes);
+ return;
+ }
+
+ if (xspi->txbuf) {
+ switch (xspi->n_bytes) {
+ case CDNS_SPI_N_BYTES_U8:
+ txw = *(u8 *)xspi->txbuf;
+ break;
+ case CDNS_SPI_N_BYTES_U16:
+ txw = *(u16 *)xspi->txbuf;
+ break;
+ case CDNS_SPI_N_BYTES_U32:
+ txw = *(u32 *)xspi->txbuf;
+ break;
+ default:
+ pr_err("%s invalid n_bytes %d\n", __func__,
+ xspi->n_bytes);
+ return;
+ }
+ cdns_spi_write(xspi, CDNS_SPI_TXD, txw);
+ xspi->txbuf = (u8 *)xspi->txbuf + xspi->n_bytes;
+ }
+}
+
/**
* cdns_spi_process_fifo - Fills the TX FIFO, and drain the RX FIFO
* @xspi: Pointer to the cdns_spi structure
@@ -321,23 +402,14 @@ static void cdns_spi_process_fifo(struct cdns_spi *xspi, int ntx, int nrx)
while (ntx || nrx) {
if (nrx) {
- u8 data = cdns_spi_read(xspi, CDNS_SPI_RXD);
-
- if (xspi->rxbuf)
- *xspi->rxbuf++ = data;
-
+ cdns_spi_reader(xspi);
nrx--;
}
if (ntx) {
- if (xspi->txbuf)
- cdns_spi_write(xspi, CDNS_SPI_TXD, *xspi->txbuf++);
- else
- cdns_spi_write(xspi, CDNS_SPI_TXD, 0);
-
+ cdns_spi_writer(xspi);
ntx--;
}
-
}
}
@@ -454,6 +526,10 @@ static int cdns_transfer_one(struct spi_controller *ctlr,
if (cdns_spi_read(xspi, CDNS_SPI_ISR) & CDNS_SPI_IXR_TXFULL)
udelay(10);
+ xspi->n_bytes = cdns_spi_n_bytes(transfer);
+ xspi->tx_bytes = DIV_ROUND_UP(xspi->tx_bytes, xspi->n_bytes);
+ xspi->rx_bytes = DIV_ROUND_UP(xspi->rx_bytes, xspi->n_bytes);
+
cdns_spi_process_fifo(xspi, xspi->tx_fifo_depth, 0);
cdns_spi_write(xspi, CDNS_SPI_IER, CDNS_SPI_IXR_DEFAULT);
@@ -654,6 +730,9 @@ static int cdns_spi_probe(struct platform_device *pdev)
ctlr->mode_bits = SPI_CPOL | SPI_CPHA;
ctlr->bits_per_word_mask = SPI_BPW_MASK(8);
+ if (of_device_is_compatible(pdev->dev.of_node, "cix,sky1-spi-r1p6"))
+ ctlr->bits_per_word_mask |= SPI_BPW_MASK(16) | SPI_BPW_MASK(32);
+
if (!spi_controller_is_target(ctlr)) {
ctlr->mode_bits |= SPI_CS_HIGH;
ctlr->set_cs = cdns_spi_chipselect;
@@ -809,6 +888,7 @@ static const struct dev_pm_ops cdns_spi_dev_pm_ops = {
static const struct of_device_id cdns_spi_of_match[] = {
{ .compatible = "xlnx,zynq-spi-r1p6" },
+ { .compatible = "cix,sky1-spi-r1p6" },
{ .compatible = "cdns,spi-r1p6" },
{ /* end of table */ }
};
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 059/337] spi: spi-cadence: Move TX FIFO full busy-wait into FIFO
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (56 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 058/337] spi: spi-cadence: supports transmission with bits_per_word of 16 and 32 Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 060/337] hwmon: (nct6775-core) Fix number of temperature registers for NCT6116 Greg Kroah-Hartman
` (285 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Srikanth Boyapally,
Radhey Shyam Pandey, Mark Brown, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Srikanth Boyapally <srikanth.boyapally@amd.com>
[ Upstream commit d9eadfce2fac49445db40808fe4d8259f20a9d2b ]
SPI host transfers could intermittently stall with spi_transfer timeouts.
The TXFULL condition was checked only once in cdns_transfer_one() before
cdns_spi_process_fifo(), so if the FIFO became full again during refill,
writes could be dropped and the transfer would never complete.
Move the TXFULL busy-wait into the TX path of cdns_spi_process_fifo() so
the 10µs back-off is applied per FIFO entry during filling, ensuring
forward progress and eliminating spurious timeouts.
Restrict the delay to host mode using spi_controller_is_target(), the
controller is passed into cdns_spi_process_fifo() so the check is made at
the point of use. In target mode this delay must not run as it causes the
target to miss its transfer window and corrupt data.
Fixes: 49530e641178 ("spi: cadence: Add usleep_range() for cdns_spi_fill_tx_fifo()")
Signed-off-by: Srikanth Boyapally <srikanth.boyapally@amd.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Link: https://patch.msgid.link/20260720125510.60166-1-srikanth.boyapally@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/spi/spi-cadence.c | 26 ++++++++++++++++----------
1 file changed, 16 insertions(+), 10 deletions(-)
diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c
index fee908b7f327e..015dce7fc9d81 100644
--- a/drivers/spi/spi-cadence.c
+++ b/drivers/spi/spi-cadence.c
@@ -388,11 +388,13 @@ static inline void cdns_spi_writer(struct cdns_spi *xspi)
/**
* cdns_spi_process_fifo - Fills the TX FIFO, and drain the RX FIFO
+ * @ctlr: Pointer to the spi_controller structure
* @xspi: Pointer to the cdns_spi structure
* @ntx: Number of bytes to pack into the TX FIFO
* @nrx: Number of bytes to drain from the RX FIFO
*/
-static void cdns_spi_process_fifo(struct cdns_spi *xspi, int ntx, int nrx)
+static void cdns_spi_process_fifo(struct spi_controller *ctlr,
+ struct cdns_spi *xspi, int ntx, int nrx)
{
ntx = clamp(ntx, 0, xspi->tx_bytes);
nrx = clamp(nrx, 0, xspi->rx_bytes);
@@ -407,6 +409,16 @@ static void cdns_spi_process_fifo(struct cdns_spi *xspi, int ntx, int nrx)
}
if (ntx) {
+ /* When xspi in busy condition, bytes may send failed,
+ * then spi control didn't work thoroughly, add one byte
+ * delay. Only in host mode; in target mode this delay
+ * causes data corruption as the target fails to prepare
+ * data in time.
+ */
+ if (!spi_controller_is_target(ctlr) &&
+ (cdns_spi_read(xspi, CDNS_SPI_ISR) & CDNS_SPI_IXR_TXFULL))
+ udelay(10);
+
cdns_spi_writer(xspi);
ntx--;
}
@@ -460,14 +472,14 @@ static irqreturn_t cdns_spi_irq(int irq, void *dev_id)
cdns_spi_write(xspi, CDNS_SPI_THLD, 1);
if (xspi->tx_bytes) {
- cdns_spi_process_fifo(xspi, trans_cnt, trans_cnt);
+ cdns_spi_process_fifo(ctlr, xspi, trans_cnt, trans_cnt);
} else {
/* Fixed delay due to controller limitation with
* RX_NEMPTY incorrect status
* Xilinx AR:65885 contains more details
*/
udelay(10);
- cdns_spi_process_fifo(xspi, 0, trans_cnt);
+ cdns_spi_process_fifo(ctlr, xspi, 0, trans_cnt);
cdns_spi_write(xspi, CDNS_SPI_IDR,
CDNS_SPI_IXR_DEFAULT);
spi_finalize_current_transfer(ctlr);
@@ -520,17 +532,11 @@ static int cdns_transfer_one(struct spi_controller *ctlr,
cdns_spi_write(xspi, CDNS_SPI_THLD, xspi->tx_fifo_depth >> 1);
}
- /* When xspi in busy condition, bytes may send failed,
- * then spi control didn't work thoroughly, add one byte delay
- */
- if (cdns_spi_read(xspi, CDNS_SPI_ISR) & CDNS_SPI_IXR_TXFULL)
- udelay(10);
-
xspi->n_bytes = cdns_spi_n_bytes(transfer);
xspi->tx_bytes = DIV_ROUND_UP(xspi->tx_bytes, xspi->n_bytes);
xspi->rx_bytes = DIV_ROUND_UP(xspi->rx_bytes, xspi->n_bytes);
- cdns_spi_process_fifo(xspi, xspi->tx_fifo_depth, 0);
+ cdns_spi_process_fifo(ctlr, xspi, xspi->tx_fifo_depth, 0);
cdns_spi_write(xspi, CDNS_SPI_IER, CDNS_SPI_IXR_DEFAULT);
return transfer->len;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 060/337] hwmon: (nct6775-core) Fix number of temperature registers for NCT6116
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (57 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 059/337] spi: spi-cadence: Move TX FIFO full busy-wait into FIFO Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 061/337] hwmon: (ina2xx) Add support for has_alerts configuration flag Greg Kroah-Hartman
` (284 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Florian Bezdeka, Björn Gerhart,
Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit b0e8adb2ccb43009796897ced09f91636685c9d3 ]
Unlike NCT6106, NCT6116 only has three temperature registers, and with
it only three temperature source and temperature source configuration
registers. The register addresses match those of NCT6106 and can be
re-used.
The code used a separate array to list the temperature source registers
for NCT6116, but used the size of the NCT6106 register array to set
the number of registers. The NCT6106 register array provides six addresses,
while the temperature source register array for NCT6116 only provides three
addresses. This causes a KASAN report.
BUG: KASAN: global-out-of-bounds in nct6775_probe+0x936/0x46f0 [nct6775]
Read of size 2 at addr ffffffffc19561a6 by task modprobe/954
...
Call Trace:
dump_stack+0x7d/0xa7
print_address_description.constprop.0+0x1c/0x220
? __kasan_kmalloc.constprop.0+0xc9/0xd0
? __kmalloc_node_track_caller+0x194/0x5b0
? nct6775_probe+0x936/0x46f0 [nct6775]
? nct6775_probe+0x936/0x46f0 [nct6775]
...
Fix the problem by hard-coding the number of temperature and temperature
configuration registers to three for NCT6116. Drop the unnecessary
NCT6116_REG_TEMP_SOURCE array and re-use NCT6106_REG_TEMP_SOURCE.
Reported-by: Florian Bezdeka <florian.bezdeka@siemens.com>
Closes: https://lore.kernel.org/linux-hwmon/57cfc3fa-d4e9-4c10-8aa7-4ad0af7ebebe@roeck-us.net/T/#t
Fixes: 29c7cb485b32 ("hwmon: (nct6775) Integrate new model nct6116")
Cc: Björn Gerhart <gerhart@posteo.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/nct6775-core.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/hwmon/nct6775-core.c b/drivers/hwmon/nct6775-core.c
index 79bc67ffb9986..506d57025c3bd 100644
--- a/drivers/hwmon/nct6775-core.c
+++ b/drivers/hwmon/nct6775-core.c
@@ -846,8 +846,6 @@ static const u16 NCT6116_FAN_PULSE_SHIFT[] = { 0, 2, 4, 6, 6 };
static const u16 NCT6116_REG_PWM[] = { 0x119, 0x129, 0x139, 0x199, 0x1a9 };
static const u16 NCT6116_REG_FAN_MODE[] = { 0x113, 0x123, 0x133, 0x193, 0x1a3 };
static const u16 NCT6116_REG_TEMP_SEL[] = { 0x110, 0x120, 0x130, 0x190, 0x1a0 };
-static const u16 NCT6116_REG_TEMP_SOURCE[] = {
- 0xb0, 0xb1, 0xb2 };
static const u16 NCT6116_REG_CRITICAL_TEMP[] = {
0x11a, 0x12a, 0x13a, 0x19a, 0x1aa };
@@ -3650,7 +3648,7 @@ int nct6775_probe(struct device *dev, struct nct6775_data *data,
= NCT6106_CRITICAL_PWM_ENABLE_MASK;
data->REG_CRITICAL_PWM = NCT6116_REG_CRITICAL_PWM;
data->REG_TEMP_OFFSET = NCT6106_REG_TEMP_OFFSET;
- data->REG_TEMP_SOURCE = NCT6116_REG_TEMP_SOURCE;
+ data->REG_TEMP_SOURCE = NCT6106_REG_TEMP_SOURCE;
data->REG_TEMP_SEL = NCT6116_REG_TEMP_SEL;
data->REG_WEIGHT_TEMP_SEL = NCT6106_REG_WEIGHT_TEMP_SEL;
data->REG_WEIGHT_TEMP[0] = NCT6106_REG_WEIGHT_TEMP_STEP;
@@ -3664,13 +3662,13 @@ int nct6775_probe(struct device *dev, struct nct6775_data *data,
reg_temp = NCT6106_REG_TEMP;
reg_temp_mon = NCT6106_REG_TEMP_MON;
- num_reg_temp = ARRAY_SIZE(NCT6106_REG_TEMP);
+ num_reg_temp = 3;
num_reg_temp_mon = ARRAY_SIZE(NCT6106_REG_TEMP_MON);
num_reg_tsi_temp = ARRAY_SIZE(NCT6116_REG_TSI_TEMP);
reg_temp_over = NCT6106_REG_TEMP_OVER;
reg_temp_hyst = NCT6106_REG_TEMP_HYST;
reg_temp_config = NCT6106_REG_TEMP_CONFIG;
- num_reg_temp_config = ARRAY_SIZE(NCT6106_REG_TEMP_CONFIG);
+ num_reg_temp_config = 3;
reg_temp_alternate = NCT6106_REG_TEMP_ALTERNATE;
reg_temp_crit = NCT6106_REG_TEMP_CRIT;
reg_temp_crit_l = NCT6106_REG_TEMP_CRIT_L;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 061/337] hwmon: (ina2xx) Add support for has_alerts configuration flag
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (58 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 060/337] hwmon: (nct6775-core) Fix number of temperature registers for NCT6116 Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 062/337] hwmon: (ina2xx) Add support for INA260 Greg Kroah-Hartman
` (283 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tzung-Bi Shih, Guenter Roeck,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit de0da6ae1908b43b23782d64b4564b5ca3119f7f ]
Add configuration flag indicating if the chip supports alerts and limits
to prepare for adding INA260 support.
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Stable-dep-of: e6c80061ca23 ("hwmon: (ina2xx) Fix various overflow issues")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/ina2xx.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index f0fa6d073627f..03a011c9b73da 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -129,6 +129,7 @@ enum ina2xx_ids { ina219, ina226 };
struct ina2xx_config {
u16 config_default;
+ bool has_alerts; /* chip supports alerts and limits */
int calibration_value;
int shunt_div;
int bus_voltage_shift;
@@ -155,6 +156,7 @@ static const struct ina2xx_config ina2xx_config[] = {
.bus_voltage_shift = 3,
.bus_voltage_lsb = 4000,
.power_lsb_factor = 20,
+ .has_alerts = false,
},
[ina226] = {
.config_default = INA226_CONFIG_DEFAULT,
@@ -163,6 +165,7 @@ static const struct ina2xx_config ina2xx_config[] = {
.bus_voltage_shift = 0,
.bus_voltage_lsb = 1250,
.power_lsb_factor = 25,
+ .has_alerts = true,
},
};
@@ -624,6 +627,7 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type
u32 attr, int channel)
{
const struct ina2xx_data *data = _data;
+ bool has_alerts = data->config->has_alerts;
enum ina2xx_ids chip = data->chip;
switch (type) {
@@ -633,12 +637,12 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type
return 0444;
case hwmon_in_lcrit:
case hwmon_in_crit:
- if (chip == ina226)
+ if (has_alerts)
return 0644;
break;
case hwmon_in_lcrit_alarm:
case hwmon_in_crit_alarm:
- if (chip == ina226)
+ if (has_alerts)
return 0444;
break;
default:
@@ -651,12 +655,12 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type
return 0444;
case hwmon_curr_lcrit:
case hwmon_curr_crit:
- if (chip == ina226)
+ if (has_alerts)
return 0644;
break;
case hwmon_curr_lcrit_alarm:
case hwmon_curr_crit_alarm:
- if (chip == ina226)
+ if (has_alerts)
return 0444;
break;
default:
@@ -668,11 +672,11 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type
case hwmon_power_input:
return 0444;
case hwmon_power_crit:
- if (chip == ina226)
+ if (has_alerts)
return 0644;
break;
case hwmon_power_crit_alarm:
- if (chip == ina226)
+ if (has_alerts)
return 0444;
break;
default:
@@ -802,7 +806,7 @@ static int ina2xx_init(struct device *dev, struct ina2xx_data *data)
if (ret < 0)
return ret;
- if (data->chip == ina226) {
+ if (data->config->has_alerts) {
bool active_high = device_property_read_bool(dev, "ti,alert-polarity-active-high");
regmap_update_bits(regmap, INA226_MASK_ENABLE,
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 062/337] hwmon: (ina2xx) Add support for INA260
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (59 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 061/337] hwmon: (ina2xx) Add support for has_alerts configuration flag Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 063/337] hwmon: (ina226) Add support for SY24655 Greg Kroah-Hartman
` (282 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Loic Guegan, Tzung-Bi Shih,
Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit 70fb84a109c639637f0636281dbdb21ed8ffb000 ]
INA260 is similar to other chips of the series, except it has an internal
shunt resistor. The calibration register is therefore not present. Also,
the current register address was changed, though that does not matter for
the driver since the shunt voltage register (which is now the current
register) value is already used to read the current.
Cc: Loic Guegan <loic.guegan@mailbox.org>
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Stable-dep-of: e6c80061ca23 ("hwmon: (ina2xx) Fix various overflow issues")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
Documentation/hwmon/ina2xx.rst | 23 +++++++++++++++----
drivers/hwmon/Kconfig | 5 ++--
drivers/hwmon/ina2xx.c | 42 ++++++++++++++++++++++++++++++----
3 files changed, 59 insertions(+), 11 deletions(-)
diff --git a/Documentation/hwmon/ina2xx.rst b/Documentation/hwmon/ina2xx.rst
index 7f1939b40f74f..1ce161e6c0bf0 100644
--- a/Documentation/hwmon/ina2xx.rst
+++ b/Documentation/hwmon/ina2xx.rst
@@ -53,6 +53,16 @@ Supported chips:
https://www.ti.com/
+ * Texas Instruments INA260
+
+ Prefix: 'ina260'
+
+ Addresses: I2C 0x40 - 0x4f
+
+ Datasheet: Publicly available at the Texas Instruments website
+
+ https://www.ti.com/
+
Author: Lothar Felten <lothar.felten@gmail.com>
Description
@@ -72,6 +82,9 @@ INA230 and INA231 are high or low side current shunt and power monitors
with an I2C interface. The chips monitor both a shunt voltage drop and
bus supply voltage.
+INA260 is a high or low side current and power monitor with integrated shunt
+resistor.
+
The shunt value in micro-ohms can be set via platform data or device tree at
compile-time or via the shunt_resistor attribute in sysfs at run-time. Please
refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings
@@ -87,16 +100,16 @@ The actual programmed interval may vary from the desired value.
General sysfs entries
---------------------
-======================= ===============================
+======================= ===============================================
in0_input Shunt voltage(mV) channel
in1_input Bus voltage(mV) channel
curr1_input Current(mA) measurement channel
power1_input Power(uW) measurement channel
-shunt_resistor Shunt resistance(uOhm) channel
-======================= ===============================
+shunt_resistor Shunt resistance(uOhm) channel (not for ina260)
+======================= ===============================================
-Sysfs entries for ina226, ina230 and ina231 only
-------------------------------------------------
+Additional sysfs entries for ina226, ina230, ina231, and ina260
+---------------------------------------------------------------
======================= ====================================================
curr1_lcrit Critical low current
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index acd0f86cb9b38..681722626bc48 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -2170,11 +2170,12 @@ config SENSORS_INA2XX
select REGMAP_I2C
help
If you say yes here you get support for INA219, INA220, INA226,
- INA230, and INA231 power monitor chips.
+ INA230, INA231, and INA260 power monitor chips.
The INA2xx driver is configured for the default configuration of
the part as described in the datasheet.
- Default value for Rshunt is 10 mOhms.
+ Default value for Rshunt is 10 mOhms except for INA260 which has an
+ internal 2 mOhm shunt resistor.
This driver can also be built as a module. If so, the module
will be called ina2xx.
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index 03a011c9b73da..cecc80a41a974 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -56,12 +56,14 @@
/* settings - depend on use case */
#define INA219_CONFIG_DEFAULT 0x399F /* PGA=8 */
#define INA226_CONFIG_DEFAULT 0x4527 /* averages=16 */
+#define INA260_CONFIG_DEFAULT 0x6527 /* averages=16 */
/* worst case is 68.10 ms (~14.6Hz, ina219) */
#define INA2XX_CONVERSION_RATE 15
#define INA2XX_MAX_DELAY 69 /* worst case delay in ms */
#define INA2XX_RSHUNT_DEFAULT 10000
+#define INA260_RSHUNT 2000
/* bit mask for reading the averaging setting in the configuration register */
#define INA226_AVG_RD_MASK GENMASK(11, 9)
@@ -125,11 +127,12 @@ static const struct regmap_config ina2xx_regmap_config = {
.writeable_reg = ina2xx_writeable_reg,
};
-enum ina2xx_ids { ina219, ina226 };
+enum ina2xx_ids { ina219, ina226, ina260 };
struct ina2xx_config {
u16 config_default;
bool has_alerts; /* chip supports alerts and limits */
+ bool has_ishunt; /* chip has internal shunt resistor */
int calibration_value;
int shunt_div;
int bus_voltage_shift;
@@ -157,6 +160,7 @@ static const struct ina2xx_config ina2xx_config[] = {
.bus_voltage_lsb = 4000,
.power_lsb_factor = 20,
.has_alerts = false,
+ .has_ishunt = false,
},
[ina226] = {
.config_default = INA226_CONFIG_DEFAULT,
@@ -166,6 +170,16 @@ static const struct ina2xx_config ina2xx_config[] = {
.bus_voltage_lsb = 1250,
.power_lsb_factor = 25,
.has_alerts = true,
+ .has_ishunt = false,
+ },
+ [ina260] = {
+ .config_default = INA260_CONFIG_DEFAULT,
+ .shunt_div = 400,
+ .bus_voltage_shift = 0,
+ .bus_voltage_lsb = 1250,
+ .power_lsb_factor = 8,
+ .has_alerts = true,
+ .has_ishunt = true,
},
};
@@ -257,6 +271,15 @@ static int ina2xx_read_init(struct device *dev, int reg, long *val)
unsigned int regval;
int ret, retry;
+ if (data->config->has_ishunt) {
+ /* No calibration needed */
+ ret = regmap_read(regmap, reg, ®val);
+ if (ret < 0)
+ return ret;
+ *val = ina2xx_get_value(data, reg, regval);
+ return 0;
+ }
+
for (retry = 5; retry; retry--) {
ret = regmap_read(regmap, reg, ®val);
if (ret < 0)
@@ -686,7 +709,7 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type
case hwmon_chip:
switch (attr) {
case hwmon_chip_update_interval:
- if (chip == ina226)
+ if (chip == ina226 || chip == ina260)
return 0644;
break;
default:
@@ -795,7 +818,9 @@ static int ina2xx_init(struct device *dev, struct ina2xx_data *data)
u32 shunt;
int ret;
- if (device_property_read_u32(dev, "shunt-resistor", &shunt) < 0)
+ if (data->config->has_ishunt)
+ shunt = INA260_RSHUNT;
+ else if (device_property_read_u32(dev, "shunt-resistor", &shunt) < 0)
shunt = INA2XX_RSHUNT_DEFAULT;
ret = ina2xx_set_shunt(data, shunt);
@@ -815,6 +840,9 @@ static int ina2xx_init(struct device *dev, struct ina2xx_data *data)
FIELD_PREP(INA226_ALERT_POLARITY, active_high));
}
+ if (data->config->has_ishunt)
+ return 0;
+
/*
* Calibration register is set to the best value, which eliminates
* truncation errors on calculating current register in hardware.
@@ -860,7 +888,8 @@ static int ina2xx_probe(struct i2c_client *client)
hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
data, &ina2xx_chip_info,
- ina2xx_groups);
+ data->config->has_ishunt ?
+ NULL : ina2xx_groups);
if (IS_ERR(hwmon_dev))
return PTR_ERR(hwmon_dev);
@@ -876,6 +905,7 @@ static const struct i2c_device_id ina2xx_id[] = {
{ "ina226", ina226 },
{ "ina230", ina226 },
{ "ina231", ina226 },
+ { "ina260", ina260 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ina2xx_id);
@@ -901,6 +931,10 @@ static const struct of_device_id __maybe_unused ina2xx_of_match[] = {
.compatible = "ti,ina231",
.data = (void *)ina226
},
+ {
+ .compatible = "ti,ina260",
+ .data = (void *)ina260
+ },
{ },
};
MODULE_DEVICE_TABLE(of, ina2xx_of_match);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 063/337] hwmon: (ina226) Add support for SY24655
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (60 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 062/337] hwmon: (ina2xx) Add support for INA260 Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 064/337] hwmon: (ina2xx) Make it easier to add more devices Greg Kroah-Hartman
` (281 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Wenliang Yan, Guenter Roeck,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wenliang Yan <wenliang202407@163.com>
[ Upstream commit 52172ad87a22ed6e687ca678da21d3c949bc89a1 ]
SY24655: Support for current and voltage detection as well as
power calculation.
Signed-off-by: Wenliang Yan <wenliang202407@163.com>
Message-ID: <20241106150547.2538-1-wenliang202407@163.com>
[groeck: Changed order of compatible entries;
dropped spurious extra return statement in is_visible();
fixed code problems]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Stable-dep-of: e6c80061ca23 ("hwmon: (ina2xx) Fix various overflow issues")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
Documentation/hwmon/ina2xx.rst | 27 +++++++++-
drivers/hwmon/Kconfig | 2 +-
drivers/hwmon/ina2xx.c | 94 ++++++++++++++++++++++++++++++++--
3 files changed, 116 insertions(+), 7 deletions(-)
diff --git a/Documentation/hwmon/ina2xx.rst b/Documentation/hwmon/ina2xx.rst
index 1ce161e6c0bf0..a3860aae444c0 100644
--- a/Documentation/hwmon/ina2xx.rst
+++ b/Documentation/hwmon/ina2xx.rst
@@ -63,6 +63,17 @@ Supported chips:
https://www.ti.com/
+ * Silergy SY24655
+
+ Prefix: 'sy24655'
+
+ Addresses: I2C 0x40 - 0x4f
+
+ Datasheet: Publicly available at the Silergy website
+
+ https://us1.silergy.com/
+
+
Author: Lothar Felten <lothar.felten@gmail.com>
Description
@@ -85,6 +96,11 @@ bus supply voltage.
INA260 is a high or low side current and power monitor with integrated shunt
resistor.
+The SY24655 is a high- and low-side current shunt and power monitor with an I2C
+interface. The SY24655 supports both shunt drop and supply voltage, with
+programmable calibration value and conversion times. The SY24655 can also
+calculate average power for use in energy conversion.
+
The shunt value in micro-ohms can be set via platform data or device tree at
compile-time or via the shunt_resistor attribute in sysfs at run-time. Please
refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings
@@ -108,8 +124,8 @@ power1_input Power(uW) measurement channel
shunt_resistor Shunt resistance(uOhm) channel (not for ina260)
======================= ===============================================
-Additional sysfs entries for ina226, ina230, ina231, and ina260
----------------------------------------------------------------
+Additional sysfs entries for ina226, ina230, ina231, ina260, and sy24655
+------------------------------------------------------------------------
======================= ====================================================
curr1_lcrit Critical low current
@@ -130,6 +146,13 @@ update_interval data conversion time; affects number of samples used
to average results for shunt and bus voltages.
======================= ====================================================
+Sysfs entries for sy24655 only
+------------------------------
+
+======================= ====================================================
+power1_average average power from last reading to the present.
+======================= ====================================================
+
.. note::
- Configure `shunt_resistor` before configure `power1_crit`, because power
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 681722626bc48..195c7b505a853 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -2170,7 +2170,7 @@ config SENSORS_INA2XX
select REGMAP_I2C
help
If you say yes here you get support for INA219, INA220, INA226,
- INA230, INA231, and INA260 power monitor chips.
+ INA230, INA231, INA260, and SY24655 power monitor chips.
The INA2xx driver is configured for the default configuration of
the part as described in the datasheet.
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index cecc80a41a974..345fe7db9de94 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -51,12 +51,19 @@
#define INA226_ALERT_LIMIT 0x07
#define INA226_DIE_ID 0xFF
-#define INA2XX_MAX_REGISTERS 8
+/* SY24655 register definitions */
+#define SY24655_EIN 0x0A
+#define SY24655_ACCUM_CONFIG 0x0D
+#define INA2XX_MAX_REGISTERS 0x0D
/* settings - depend on use case */
#define INA219_CONFIG_DEFAULT 0x399F /* PGA=8 */
#define INA226_CONFIG_DEFAULT 0x4527 /* averages=16 */
#define INA260_CONFIG_DEFAULT 0x6527 /* averages=16 */
+#define SY24655_CONFIG_DEFAULT 0x4527 /* averages=16 */
+
+/* (only for sy24655) */
+#define SY24655_ACCUM_CONFIG_DEFAULT 0x044C /* continuous mode, clear after read*/
/* worst case is 68.10 ms (~14.6Hz, ina219) */
#define INA2XX_CONVERSION_RATE 15
@@ -97,6 +104,7 @@ static bool ina2xx_writeable_reg(struct device *dev, unsigned int reg)
case INA2XX_CALIBRATION:
case INA226_MASK_ENABLE:
case INA226_ALERT_LIMIT:
+ case SY24655_ACCUM_CONFIG:
return true;
default:
return false;
@@ -127,12 +135,13 @@ static const struct regmap_config ina2xx_regmap_config = {
.writeable_reg = ina2xx_writeable_reg,
};
-enum ina2xx_ids { ina219, ina226, ina260 };
+enum ina2xx_ids { ina219, ina226, ina260, sy24655 };
struct ina2xx_config {
u16 config_default;
bool has_alerts; /* chip supports alerts and limits */
bool has_ishunt; /* chip has internal shunt resistor */
+ bool has_power_average; /* chip has internal shunt resistor */
int calibration_value;
int shunt_div;
int bus_voltage_shift;
@@ -149,6 +158,7 @@ struct ina2xx_data {
long power_lsb_uW;
struct mutex config_lock;
struct regmap *regmap;
+ struct i2c_client *client;
};
static const struct ina2xx_config ina2xx_config[] = {
@@ -161,6 +171,7 @@ static const struct ina2xx_config ina2xx_config[] = {
.power_lsb_factor = 20,
.has_alerts = false,
.has_ishunt = false,
+ .has_power_average = false,
},
[ina226] = {
.config_default = INA226_CONFIG_DEFAULT,
@@ -171,6 +182,7 @@ static const struct ina2xx_config ina2xx_config[] = {
.power_lsb_factor = 25,
.has_alerts = true,
.has_ishunt = false,
+ .has_power_average = false,
},
[ina260] = {
.config_default = INA260_CONFIG_DEFAULT,
@@ -180,6 +192,18 @@ static const struct ina2xx_config ina2xx_config[] = {
.power_lsb_factor = 8,
.has_alerts = true,
.has_ishunt = true,
+ .has_power_average = false,
+ },
+ [sy24655] = {
+ .config_default = SY24655_CONFIG_DEFAULT,
+ .calibration_value = 4096,
+ .shunt_div = 400,
+ .bus_voltage_shift = 0,
+ .bus_voltage_lsb = 1250,
+ .power_lsb_factor = 25,
+ .has_alerts = true,
+ .has_ishunt = false,
+ .has_power_average = true,
},
};
@@ -485,6 +509,41 @@ static int ina2xx_in_read(struct device *dev, u32 attr, int channel, long *val)
return 0;
}
+/*
+ * Configuring the READ_EIN (bit 10) of the ACCUM_CONFIG register to 1
+ * can clear accumulator and sample_count after reading the EIN register.
+ * This way, the average power between the last read and the current
+ * read can be obtained. By combining with accurate time data from
+ * outside, the energy consumption during that period can be calculated.
+ */
+static int sy24655_average_power_read(struct ina2xx_data *data, u8 reg, long *val)
+{
+ u8 template[6];
+ int ret;
+ long accumulator_24, sample_count;
+
+ /* 48-bit register read */
+ ret = i2c_smbus_read_i2c_block_data(data->client, reg, 6, template);
+ if (ret < 0)
+ return ret;
+ if (ret != 6)
+ return -EIO;
+ accumulator_24 = ((template[3] << 16) |
+ (template[4] << 8) |
+ template[5]);
+ sample_count = ((template[0] << 16) |
+ (template[1] << 8) |
+ template[2]);
+ if (sample_count <= 0) {
+ *val = 0;
+ return 0;
+ }
+
+ *val = DIV_ROUND_CLOSEST(accumulator_24, sample_count) * data->power_lsb_uW;
+
+ return 0;
+}
+
static int ina2xx_power_read(struct device *dev, u32 attr, long *val)
{
struct ina2xx_data *data = dev_get_drvdata(dev);
@@ -492,6 +551,8 @@ static int ina2xx_power_read(struct device *dev, u32 attr, long *val)
switch (attr) {
case hwmon_power_input:
return ina2xx_read_init(dev, INA2XX_POWER, val);
+ case hwmon_power_average:
+ return sy24655_average_power_read(data, SY24655_EIN, val);
case hwmon_power_crit:
return ina226_alert_limit_read(data, INA226_POWER_OVER_LIMIT_MASK,
INA2XX_POWER, val);
@@ -651,6 +712,7 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type
{
const struct ina2xx_data *data = _data;
bool has_alerts = data->config->has_alerts;
+ bool has_power_average = data->config->has_power_average;
enum ina2xx_ids chip = data->chip;
switch (type) {
@@ -702,6 +764,10 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type
if (has_alerts)
return 0444;
break;
+ case hwmon_power_average:
+ if (has_power_average)
+ return 0444;
+ break;
default:
break;
}
@@ -734,7 +800,8 @@ static const struct hwmon_channel_info * const ina2xx_info[] = {
HWMON_CHANNEL_INFO(curr, HWMON_C_INPUT | HWMON_C_CRIT | HWMON_C_CRIT_ALARM |
HWMON_C_LCRIT | HWMON_C_LCRIT_ALARM),
HWMON_CHANNEL_INFO(power,
- HWMON_P_INPUT | HWMON_P_CRIT | HWMON_P_CRIT_ALARM),
+ HWMON_P_INPUT | HWMON_P_CRIT | HWMON_P_CRIT_ALARM |
+ HWMON_P_AVERAGE),
NULL
};
@@ -839,6 +906,19 @@ static int ina2xx_init(struct device *dev, struct ina2xx_data *data)
INA226_ALERT_LATCH_ENABLE |
FIELD_PREP(INA226_ALERT_POLARITY, active_high));
}
+ if (data->config->has_power_average) {
+ if (data->chip == sy24655) {
+ /*
+ * Initialize the power accumulation method to continuous
+ * mode and clear the EIN register after each read of the
+ * EIN register
+ */
+ ret = regmap_write(regmap, SY24655_ACCUM_CONFIG,
+ SY24655_ACCUM_CONFIG_DEFAULT);
+ if (ret < 0)
+ return ret;
+ }
+ }
if (data->config->has_ishunt)
return 0;
@@ -868,6 +948,7 @@ static int ina2xx_probe(struct i2c_client *client)
return -ENOMEM;
/* set the device type */
+ data->client = client;
data->config = &ina2xx_config[chip];
data->chip = chip;
mutex_init(&data->config_lock);
@@ -906,11 +987,16 @@ static const struct i2c_device_id ina2xx_id[] = {
{ "ina230", ina226 },
{ "ina231", ina226 },
{ "ina260", ina260 },
+ { "sy24655", sy24655 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ina2xx_id);
static const struct of_device_id __maybe_unused ina2xx_of_match[] = {
+ {
+ .compatible = "silergy,sy24655",
+ .data = (void *)sy24655
+ },
{
.compatible = "ti,ina219",
.data = (void *)ina219
@@ -935,7 +1021,7 @@ static const struct of_device_id __maybe_unused ina2xx_of_match[] = {
.compatible = "ti,ina260",
.data = (void *)ina260
},
- { },
+ { }
};
MODULE_DEVICE_TABLE(of, ina2xx_of_match);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 064/337] hwmon: (ina2xx) Make it easier to add more devices
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (61 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 063/337] hwmon: (ina226) Add support for SY24655 Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 065/337] hwmon: (ina2xx) Add support for INA234 Greg Kroah-Hartman
` (280 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ian Ray, Jens Almer, Guenter Roeck,
Sasha Levin, Bence Csókás
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ian Ray <ian.ray@gehealthcare.com>
[ Upstream commit f6e14b5bcabf4ee97a2d535c3c2d7e72c8da4c15 ]
* Make sysfs entries documentation easier to maintain.
* Use multi-line enum.
* Correct "has_power_average" comment.
Create a new "has_update_interval" member for chips which support
averaging.
Signed-off-by: Ian Ray <ian.ray@gehealthcare.com>
Reviewed-by: Bence Csókás <bence98@sch.bme.hu> # v2
Tested-by: Jens Almer <bagawk@gmail.com>
Link: https://lore.kernel.org/r/20260220112024.97446-3-ian.ray@gehealthcare.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Stable-dep-of: e6c80061ca23 ("hwmon: (ina2xx) Fix various overflow issues")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
Documentation/hwmon/ina2xx.rst | 12 ++++++++++--
drivers/hwmon/ina2xx.c | 18 ++++++++++++++----
2 files changed, 24 insertions(+), 6 deletions(-)
diff --git a/Documentation/hwmon/ina2xx.rst b/Documentation/hwmon/ina2xx.rst
index a3860aae444c0..a4ddf4bd2b081 100644
--- a/Documentation/hwmon/ina2xx.rst
+++ b/Documentation/hwmon/ina2xx.rst
@@ -124,8 +124,16 @@ power1_input Power(uW) measurement channel
shunt_resistor Shunt resistance(uOhm) channel (not for ina260)
======================= ===============================================
-Additional sysfs entries for ina226, ina230, ina231, ina260, and sy24655
-------------------------------------------------------------------------
+Additional sysfs entries
+------------------------
+
+Additional entries are available for the following chips:
+
+ * ina226
+ * ina230
+ * ina231
+ * ina260
+ * sy24655
======================= ====================================================
curr1_lcrit Critical low current
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index 345fe7db9de94..97ec0e0218307 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -135,13 +135,19 @@ static const struct regmap_config ina2xx_regmap_config = {
.writeable_reg = ina2xx_writeable_reg,
};
-enum ina2xx_ids { ina219, ina226, ina260, sy24655 };
+enum ina2xx_ids {
+ ina219,
+ ina226,
+ ina260,
+ sy24655
+};
struct ina2xx_config {
u16 config_default;
bool has_alerts; /* chip supports alerts and limits */
bool has_ishunt; /* chip has internal shunt resistor */
- bool has_power_average; /* chip has internal shunt resistor */
+ bool has_power_average; /* chip supports average power */
+ bool has_update_interval;
int calibration_value;
int shunt_div;
int bus_voltage_shift;
@@ -172,6 +178,7 @@ static const struct ina2xx_config ina2xx_config[] = {
.has_alerts = false,
.has_ishunt = false,
.has_power_average = false,
+ .has_update_interval = false,
},
[ina226] = {
.config_default = INA226_CONFIG_DEFAULT,
@@ -183,6 +190,7 @@ static const struct ina2xx_config ina2xx_config[] = {
.has_alerts = true,
.has_ishunt = false,
.has_power_average = false,
+ .has_update_interval = true,
},
[ina260] = {
.config_default = INA260_CONFIG_DEFAULT,
@@ -193,6 +201,7 @@ static const struct ina2xx_config ina2xx_config[] = {
.has_alerts = true,
.has_ishunt = true,
.has_power_average = false,
+ .has_update_interval = true,
},
[sy24655] = {
.config_default = SY24655_CONFIG_DEFAULT,
@@ -204,6 +213,7 @@ static const struct ina2xx_config ina2xx_config[] = {
.has_alerts = true,
.has_ishunt = false,
.has_power_average = true,
+ .has_update_interval = false,
},
};
@@ -713,7 +723,7 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type
const struct ina2xx_data *data = _data;
bool has_alerts = data->config->has_alerts;
bool has_power_average = data->config->has_power_average;
- enum ina2xx_ids chip = data->chip;
+ bool has_update_interval = data->config->has_update_interval;
switch (type) {
case hwmon_in:
@@ -775,7 +785,7 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type
case hwmon_chip:
switch (attr) {
case hwmon_chip_update_interval:
- if (chip == ina226 || chip == ina260)
+ if (has_update_interval)
return 0644;
break;
default:
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 065/337] hwmon: (ina2xx) Add support for INA234
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (62 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 064/337] hwmon: (ina2xx) Make it easier to add more devices Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 066/337] hwmon: (ina2xx) Shift INA234 shunt and current registers Greg Kroah-Hartman
` (279 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ian Ray, Jens Almer, Jonas Rebmann,
Guenter Roeck, Sasha Levin, Bence Csókás
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ian Ray <ian.ray@gehealthcare.com>
[ Upstream commit 88a928eebccdc5445d874ddcbf1683b76c9f1431 ]
INA234 is register compatible to INA226 (excepting manufacturer and die
or device id registers) but has different scaling.
Signed-off-by: Ian Ray <ian.ray@gehealthcare.com>
Reviewed-by: Bence Csókás <bence98@sch.bme.hu> # v2
Tested-by: Jens Almer <bagawk@gmail.com>
Tested-by: Jonas Rebmann <jre@pengutronix.de>
Link: https://lore.kernel.org/r/20260220112024.97446-4-ian.ray@gehealthcare.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Stable-dep-of: e6c80061ca23 ("hwmon: (ina2xx) Fix various overflow issues")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
Documentation/hwmon/ina2xx.rst | 13 ++++++++++++-
drivers/hwmon/Kconfig | 2 +-
drivers/hwmon/ina2xx.c | 18 ++++++++++++++++++
3 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/Documentation/hwmon/ina2xx.rst b/Documentation/hwmon/ina2xx.rst
index a4ddf4bd2b081..d64e7af46a124 100644
--- a/Documentation/hwmon/ina2xx.rst
+++ b/Documentation/hwmon/ina2xx.rst
@@ -74,6 +74,16 @@ Supported chips:
https://us1.silergy.com/
+ * Texas Instruments INA234
+
+ Prefix: 'ina234'
+
+ Addresses: I2C 0x40 - 0x43
+
+ Datasheet: Publicly available at the Texas Instruments website
+
+ https://www.ti.com/
+
Author: Lothar Felten <lothar.felten@gmail.com>
Description
@@ -89,7 +99,7 @@ interface. The INA220 monitors both shunt drop and supply voltage.
The INA226 is a current shunt and power monitor with an I2C interface.
The INA226 monitors both a shunt voltage drop and bus supply voltage.
-INA230 and INA231 are high or low side current shunt and power monitors
+INA230, INA231, and INA234 are high or low side current shunt and power monitors
with an I2C interface. The chips monitor both a shunt voltage drop and
bus supply voltage.
@@ -132,6 +142,7 @@ Additional entries are available for the following chips:
* ina226
* ina230
* ina231
+ * ina234
* ina260
* sy24655
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 195c7b505a853..848b9cfcb1d87 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -2170,7 +2170,7 @@ config SENSORS_INA2XX
select REGMAP_I2C
help
If you say yes here you get support for INA219, INA220, INA226,
- INA230, INA231, INA260, and SY24655 power monitor chips.
+ INA230, INA231, INA234, INA260, and SY24655 power monitor chips.
The INA2xx driver is configured for the default configuration of
the part as described in the datasheet.
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index 97ec0e0218307..be6e214fae21f 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -138,6 +138,7 @@ static const struct regmap_config ina2xx_regmap_config = {
enum ina2xx_ids {
ina219,
ina226,
+ ina234,
ina260,
sy24655
};
@@ -192,6 +193,18 @@ static const struct ina2xx_config ina2xx_config[] = {
.has_power_average = false,
.has_update_interval = true,
},
+ [ina234] = {
+ .config_default = INA226_CONFIG_DEFAULT,
+ .calibration_value = 2048,
+ .shunt_div = 400, /* 2.5 µV/LSB raw ADC reading from INA2XX_SHUNT_VOLTAGE */
+ .bus_voltage_shift = 4,
+ .bus_voltage_lsb = 25600,
+ .power_lsb_factor = 32,
+ .has_alerts = true,
+ .has_ishunt = false,
+ .has_power_average = false,
+ .has_update_interval = true,
+ },
[ina260] = {
.config_default = INA260_CONFIG_DEFAULT,
.shunt_div = 400,
@@ -996,6 +1009,7 @@ static const struct i2c_device_id ina2xx_id[] = {
{ "ina226", ina226 },
{ "ina230", ina226 },
{ "ina231", ina226 },
+ { "ina234", ina234 },
{ "ina260", ina260 },
{ "sy24655", sy24655 },
{ }
@@ -1027,6 +1041,10 @@ static const struct of_device_id __maybe_unused ina2xx_of_match[] = {
.compatible = "ti,ina231",
.data = (void *)ina226
},
+ {
+ .compatible = "ti,ina234",
+ .data = (void *)ina234
+ },
{
.compatible = "ti,ina260",
.data = (void *)ina260
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 066/337] hwmon: (ina2xx) Shift INA234 shunt and current registers
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (63 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 065/337] hwmon: (ina2xx) Add support for INA234 Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 067/337] hwmon: (ina2xx) Fix various overflow issues Greg Kroah-Hartman
` (278 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jonas Rebmann, Guenter Roeck,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jonas Rebmann <jre@pengutronix.de>
[ Upstream commit eeca1114d1e2cc0eacaebb80f3f2afbaebfc60be ]
The INA219 has the lowest three bits of the bus voltage register
zero-reserved, the bus_voltage_shift ina2xx_config field was introduced
to accommodate for that.
The INA234 has four bits of the bus voltage, of the shunt voltage, and
of the current registers zero-reserved but the latter two were
implemented by choosing a 16x higher shunt_div instead of a separate
field specifying a bit shift.
This is possible because shunt voltage and current are divided by
shunt_div, hence a 16x higher shunt_div results in a 16x smaller LSB for
both the shunt voltage and the current register, perfectly accounting
for the missing bit shift.
For consistency and correctness, account for the reserved bits via
shunt_voltage_shift and current_shift configuration fields as already
done for voltage registers and use the conversion constants given in the
INA234 datasheet.
Signed-off-by: Jonas Rebmann <jre@pengutronix.de>
Link: https://lore.kernel.org/r/20260303-ina234-shift-v1-2-318c33ac4480@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Stable-dep-of: e6c80061ca23 ("hwmon: (ina2xx) Fix various overflow issues")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/ina2xx.c | 22 +++++++++++++++++++---
1 file changed, 19 insertions(+), 3 deletions(-)
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index be6e214fae21f..d671d546b2054 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -151,9 +151,11 @@ struct ina2xx_config {
bool has_update_interval;
int calibration_value;
int shunt_div;
+ int shunt_voltage_shift;
int bus_voltage_shift;
int bus_voltage_lsb; /* uV */
int power_lsb_factor;
+ int current_shift;
};
struct ina2xx_data {
@@ -173,59 +175,69 @@ static const struct ina2xx_config ina2xx_config[] = {
.config_default = INA219_CONFIG_DEFAULT,
.calibration_value = 4096,
.shunt_div = 100,
+ .shunt_voltage_shift = 0,
.bus_voltage_shift = 3,
.bus_voltage_lsb = 4000,
.power_lsb_factor = 20,
.has_alerts = false,
.has_ishunt = false,
.has_power_average = false,
+ .current_shift = 0,
.has_update_interval = false,
},
[ina226] = {
.config_default = INA226_CONFIG_DEFAULT,
.calibration_value = 2048,
.shunt_div = 400,
+ .shunt_voltage_shift = 0,
.bus_voltage_shift = 0,
.bus_voltage_lsb = 1250,
.power_lsb_factor = 25,
.has_alerts = true,
.has_ishunt = false,
.has_power_average = false,
+ .current_shift = 0,
.has_update_interval = true,
},
[ina234] = {
.config_default = INA226_CONFIG_DEFAULT,
.calibration_value = 2048,
- .shunt_div = 400, /* 2.5 µV/LSB raw ADC reading from INA2XX_SHUNT_VOLTAGE */
+ .shunt_div = 25, /* 2.5 µV/LSB raw ADC reading from INA2XX_SHUNT_VOLTAGE */
+ .shunt_voltage_shift = 4,
.bus_voltage_shift = 4,
.bus_voltage_lsb = 25600,
.power_lsb_factor = 32,
.has_alerts = true,
.has_ishunt = false,
.has_power_average = false,
+ .current_shift = 4,
.has_update_interval = true,
},
[ina260] = {
.config_default = INA260_CONFIG_DEFAULT,
.shunt_div = 400,
+ .shunt_voltage_shift = 0,
.bus_voltage_shift = 0,
.bus_voltage_lsb = 1250,
.power_lsb_factor = 8,
.has_alerts = true,
.has_ishunt = true,
.has_power_average = false,
+ .current_shift = 0,
.has_update_interval = true,
},
[sy24655] = {
.config_default = SY24655_CONFIG_DEFAULT,
.calibration_value = 4096,
.shunt_div = 400,
+ .shunt_voltage_shift = 0,
.bus_voltage_shift = 0,
.bus_voltage_lsb = 1250,
.power_lsb_factor = 25,
.has_alerts = true,
.has_ishunt = false,
.has_power_average = true,
+ .current_shift = 0,
.has_update_interval = false,
},
};
@@ -279,7 +291,8 @@ static int ina2xx_get_value(struct ina2xx_data *data, u8 reg,
switch (reg) {
case INA2XX_SHUNT_VOLTAGE:
/* signed register */
- val = DIV_ROUND_CLOSEST((s16)regval, data->config->shunt_div);
+ val = (s16)regval >> data->config->shunt_voltage_shift;
+ val = DIV_ROUND_CLOSEST(val, data->config->shunt_div);
break;
case INA2XX_BUS_VOLTAGE:
val = (regval >> data->config->bus_voltage_shift) *
@@ -291,7 +304,8 @@ static int ina2xx_get_value(struct ina2xx_data *data, u8 reg,
break;
case INA2XX_CURRENT:
/* signed register, result in mA */
- val = (s16)regval * data->current_lsb_uA;
+ val = ((s16)regval >> data->config->current_shift) *
+ data->current_lsb_uA;
val = DIV_ROUND_CLOSEST(val, 1000);
break;
case INA2XX_CALIBRATION:
@@ -385,6 +399,7 @@ static u16 ina226_alert_to_reg(struct ina2xx_data *data, int reg, long val)
case INA2XX_SHUNT_VOLTAGE:
val = clamp_val(val, 0, SHRT_MAX * data->config->shunt_div);
val *= data->config->shunt_div;
+ val <<= data->config->shunt_voltage_shift;
return clamp_val(val, 0, SHRT_MAX);
case INA2XX_BUS_VOLTAGE:
val = clamp_val(val, 0, 200000);
@@ -399,6 +414,7 @@ static u16 ina226_alert_to_reg(struct ina2xx_data *data, int reg, long val)
val = clamp_val(val, INT_MIN / 1000, INT_MAX / 1000);
/* signed register, result in mA */
val = DIV_ROUND_CLOSEST(val * 1000, data->current_lsb_uA);
+ val <<= data->config->current_shift;
return clamp_val(val, SHRT_MIN, SHRT_MAX);
default:
/* programmer goofed */
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 067/337] hwmon: (ina2xx) Fix various overflow issues
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (64 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 066/337] hwmon: (ina2xx) Shift INA234 shunt and current registers Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 068/337] hwmon: (ltc4282) Fix reading the minimum alarm voltage Greg Kroah-Hartman
` (277 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Loic Poulain, Guenter Roeck,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit e6c80061ca239f45c0eaf7e47a91d6d6df9bd636 ]
Sashiko reports several integer overflow problems in the ina2xx driver
caused by unbounded multiplications and inadequate types for intermediate
calculations.
Specifically:
- In ina2xx_get_value(), the return type is changed from int to long.
Intermediate calculations for current are now performed using 64-bit
types to prevent 32-bit integer overflow before the division by 1000.
- When calculating power in ina2xx_get_value() and
sy24655_average_power_read(), interim values are cast to u64 and clamped
to LONG_MAX. This prevents overflow when regval or accumulator_24 is
multiplied by power_lsb_uW.
- In ina226_alert_to_reg(), the clamping logic is rewritten using min_t().
This safely avoids integer overflows when scaling user-provided values
for shunt voltage, bus voltage, power, and current limits.
Cc: Loic Poulain <loic.poulain@oss.qualcomm.com>
Fixes: ab7fbee452be ("hwmon: (ina2xx) Fix various overflow issues")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/ina2xx.c | 61 ++++++++++++++++++++++++------------------
1 file changed, 35 insertions(+), 26 deletions(-)
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index d671d546b2054..c504bb43a2ca3 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -31,6 +31,7 @@
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/limits.h>
#include <linux/module.h>
#include <linux/property.h>
#include <linux/regmap.h>
@@ -283,30 +284,34 @@ static u16 ina226_interval_to_reg(long interval)
return FIELD_PREP(INA226_AVG_RD_MASK, avg_bits);
}
-static int ina2xx_get_value(struct ina2xx_data *data, u8 reg,
- unsigned int regval)
+static long ina2xx_get_value(struct ina2xx_data *data, u8 reg,
+ unsigned int regval)
{
- int val;
+ s64 val64;
+ long val;
switch (reg) {
case INA2XX_SHUNT_VOLTAGE:
/* signed register */
- val = (s16)regval >> data->config->shunt_voltage_shift;
- val = DIV_ROUND_CLOSEST(val, data->config->shunt_div);
+ val = DIV_ROUND_CLOSEST((s16)regval >> data->config->shunt_voltage_shift,
+ data->config->shunt_div);
break;
case INA2XX_BUS_VOLTAGE:
- val = (regval >> data->config->bus_voltage_shift) *
- data->config->bus_voltage_lsb;
- val = DIV_ROUND_CLOSEST(val, 1000);
+ val = DIV_ROUND_CLOSEST((regval >> data->config->bus_voltage_shift) *
+ data->config->bus_voltage_lsb, 1000);
break;
case INA2XX_POWER:
- val = regval * data->power_lsb_uW;
+ val = min_t(u64, (u64)regval * data->power_lsb_uW, LONG_MAX);
break;
case INA2XX_CURRENT:
/* signed register, result in mA */
- val = ((s16)regval >> data->config->current_shift) *
+ val64 = (s64)((s16)regval >> data->config->current_shift) *
data->current_lsb_uA;
- val = DIV_ROUND_CLOSEST(val, 1000);
+ if (val64 < 0)
+ val64 = -DIV_ROUND_CLOSEST_ULL(-val64, 1000);
+ else
+ val64 = DIV_ROUND_CLOSEST_ULL(val64, 1000);
+ val = clamp_val(val64, LONG_MIN, LONG_MAX);
break;
case INA2XX_CALIBRATION:
val = regval;
@@ -395,27 +400,29 @@ static int ina2xx_read_init(struct device *dev, int reg, long *val)
*/
static u16 ina226_alert_to_reg(struct ina2xx_data *data, int reg, long val)
{
+ long limit;
+
switch (reg) {
case INA2XX_SHUNT_VOLTAGE:
- val = clamp_val(val, 0, SHRT_MAX * data->config->shunt_div);
- val *= data->config->shunt_div;
- val <<= data->config->shunt_voltage_shift;
- return clamp_val(val, 0, SHRT_MAX);
+ val = min_t(long, val, DIV_ROUND_CLOSEST(SHRT_MAX, data->config->shunt_div));
+ return min_t(long, (val * data->config->shunt_div) << data->config->shunt_voltage_shift,
+ SHRT_MAX);
case INA2XX_BUS_VOLTAGE:
- val = clamp_val(val, 0, 200000);
- val = (val * 1000) << data->config->bus_voltage_shift;
- val = DIV_ROUND_CLOSEST(val, data->config->bus_voltage_lsb);
- return clamp_val(val, 0, USHRT_MAX);
+ val = min_t(long, val, 130000);
+ return min_t(long,
+ DIV_ROUND_CLOSEST((val * 1000) << data->config->bus_voltage_shift,
+ data->config->bus_voltage_lsb),
+ USHRT_MAX);
case INA2XX_POWER:
- val = clamp_val(val, 0, UINT_MAX - data->power_lsb_uW);
- val = DIV_ROUND_CLOSEST(val, data->power_lsb_uW);
- return clamp_val(val, 0, USHRT_MAX);
+ val = min_t(long, val, LONG_MAX - data->power_lsb_uW);
+ return min_t(long, DIV_ROUND_CLOSEST(val, data->power_lsb_uW), USHRT_MAX);
case INA2XX_CURRENT:
- val = clamp_val(val, INT_MIN / 1000, INT_MAX / 1000);
+ limit = (LONG_MAX - (data->current_lsb_uA / 2)) / 1000;
+ val = min_t(long, val, limit);
/* signed register, result in mA */
val = DIV_ROUND_CLOSEST(val * 1000, data->current_lsb_uA);
- val <<= data->config->current_shift;
- return clamp_val(val, SHRT_MIN, SHRT_MAX);
+ limit = SHRT_MAX >> data->config->current_shift;
+ return (u16)(min_t(long, val, limit) << data->config->current_shift);
default:
/* programmer goofed */
WARN_ON_ONCE(1);
@@ -560,6 +567,7 @@ static int sy24655_average_power_read(struct ina2xx_data *data, u8 reg, long *va
u8 template[6];
int ret;
long accumulator_24, sample_count;
+ u64 val64;
/* 48-bit register read */
ret = i2c_smbus_read_i2c_block_data(data->client, reg, 6, template);
@@ -578,7 +586,8 @@ static int sy24655_average_power_read(struct ina2xx_data *data, u8 reg, long *va
return 0;
}
- *val = DIV_ROUND_CLOSEST(accumulator_24, sample_count) * data->power_lsb_uW;
+ val64 = (u64)DIV_ROUND_CLOSEST(accumulator_24, sample_count) * data->power_lsb_uW;
+ *val = min_t(u64, val64, LONG_MAX);
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 068/337] hwmon: (ltc4282) Fix reading the minimum alarm voltage
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (65 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 067/337] hwmon: (ina2xx) Fix various overflow issues Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 069/337] hwmon: (sht3x) Fix unaligned accesses Greg Kroah-Hartman
` (276 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Nuno Sa, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit 00feb1cce93dab948a299b69753d99c681d45a0b ]
Coverity reports an out-of-bounds access when reading the minimum alarm
voltage for the VGPIO channel. Add the missing return statement to fix
the problem.
Fixes: cbc29538dbf7 ("hwmon: Add driver for LTC4282")
Cc: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/ltc4282.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/ltc4282.c b/drivers/hwmon/ltc4282.c
index d98c57918ce33..e1c0d02b564b7 100644
--- a/drivers/hwmon/ltc4282.c
+++ b/drivers/hwmon/ltc4282.c
@@ -382,8 +382,8 @@ static int ltc4282_read_in(struct ltc4282_state *st, u32 attr, long *val,
channel, val);
case hwmon_in_min_alarm:
if (channel == LTC4282_CHAN_VGPIO)
- ltc4282_read_alarm(st, LTC4282_ADC_ALERT_LOG,
- LTC4282_GPIO_ALARM_L_MASK, val);
+ return ltc4282_read_alarm(st, LTC4282_ADC_ALERT_LOG,
+ LTC4282_GPIO_ALARM_L_MASK, val);
return ltc4282_vdd_source_read_alm(st,
LTC4282_VSOURCE_ALARM_L_MASK,
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 069/337] hwmon: (sht3x) Fix unaligned accesses
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (66 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 068/337] hwmon: (ltc4282) Fix reading the minimum alarm voltage Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 070/337] hwmon: (lm90) Only report alarms if driver is ready Greg Kroah-Hartman
` (275 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sashiko, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit f46d5ab43a572b84773015a76966f5da56fc1748 ]
Sashiko reports:
In sht3x_update_client(), the 16-bit temperature and humidity values are
extracted from a stack-allocated byte array using be16_to_cpup(). The
pointers passed to this function are calculated as buf and buf + 3. Since
the difference between the two pointers is an odd number of bytes, at
least one of them is guaranteed to be at an unaligned offset.
This will trigger an alignment fault on strict-alignment architectures
such as ARMv5 or SPARC, resulting in a kernel panic.
Fix the problem by using get_unaligned_be16() instead of be16_to_cpup(),
and put_unaligned_be16() instead of cpu_to_be16().
Fixes: 7c84f7f80d6f ("hwmon: add support for Sensirion SHT3x sensors")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/sht3x.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/hwmon/sht3x.c b/drivers/hwmon/sht3x.c
index 94466e28dc56f..1f63c07cfb085 100644
--- a/drivers/hwmon/sht3x.c
+++ b/drivers/hwmon/sht3x.c
@@ -21,6 +21,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
+#include <linux/unaligned.h>
/* commands (high repeatability mode) */
static const unsigned char sht3x_cmd_measure_single_hpm[] = { 0x24, 0x00 };
@@ -279,9 +280,9 @@ static struct sht3x_data *sht3x_update_client(struct device *dev)
if (ret)
goto out;
- val = be16_to_cpup((__be16 *)buf);
+ val = get_unaligned_be16(buf);
data->temperature = sht3x_extract_temperature(val);
- val = be16_to_cpup((__be16 *)(buf + 3));
+ val = get_unaligned_be16(buf + 3);
data->humidity = sht3x_extract_humidity(val);
data->last_update = jiffies;
}
@@ -339,7 +340,7 @@ static int limits_update(struct sht3x_data *data)
if (ret)
return ret;
- raw = be16_to_cpup((__be16 *)buffer);
+ raw = get_unaligned_be16(buffer);
temperature = sht3x_extract_temperature((raw & 0x01ff) << 7);
humidity = sht3x_extract_humidity(raw & 0xfe00);
data->temperature_limits[index] = temperature;
@@ -392,7 +393,7 @@ static size_t limit_write(struct device *dev,
raw = ((u32)(temperature + 45000) * 24543) >> (16 + 7);
raw |= ((humidity * 42950) >> 16) & 0xfe00;
- *((__be16 *)position) = cpu_to_be16(raw);
+ put_unaligned_be16(raw, position);
position += SHT3X_WORD_LEN;
*position = crc8(sht3x_crc8_table,
position - SHT3X_WORD_LEN,
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 070/337] hwmon: (lm90) Only report alarms if driver is ready
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (67 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 069/337] hwmon: (sht3x) Fix unaligned accesses Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 071/337] hwmon: (nzxt-smart2) DMA-align output buffer Greg Kroah-Hartman
` (274 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sashiko, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit aa9429edf9fc0e90d6f4da19ea4b5495a54ab117 ]
Userspace can read sysfs attributes before driver registration is complete,
immediately after devm_hwmon_device_register_with_info() has been called.
At that time, data->hwmon_dev is not yet initialized. This can trigger
a NULL pointer access since lm90_update_device() and with it
lm90_update_alarms_locked() will be called. This call schedules
report_work and lm90_report_alarms(), which passes the still-NULL
data->hwmon_dev to hwmon_notify_event() and triggers a NULL pointer
dereference.
Fix the problem by only scheduling the report and alert workers
data->hwmon_dev is set.
Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: f6d0775119fb9 ("hwmon: (lm90) Rework alarm/status handling")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/lm90.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 511d95a0efb36..45d5a2427dcb1 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -1149,7 +1149,7 @@ static int lm90_update_alarms_locked(struct lm90_data *data, bool force)
check_enable = (client->irq || !(data->config_orig & 0x80)) &&
(data->config & 0x80);
- if (force || check_enable)
+ if (data->hwmon_dev && (force || check_enable))
schedule_work(&data->report_work);
/*
@@ -1157,7 +1157,7 @@ static int lm90_update_alarms_locked(struct lm90_data *data, bool force)
* alarms are all clear, and alerts are currently disabled.
* Otherwise (re)schedule worker if needed.
*/
- if (check_enable) {
+ if (check_enable && data->hwmon_dev) {
if (!(data->current_alarms & data->alert_alarms)) {
dev_dbg(&client->dev, "Re-enabling ALERT#\n");
lm90_update_confreg(data, data->config & ~0x80);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 071/337] hwmon: (nzxt-smart2) DMA-align output buffer
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (68 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 070/337] hwmon: (lm90) Only report alarms if driver is ready Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 072/337] net: do not send ICMP/NDISC Redirects when peer allocation fails Greg Kroah-Hartman
` (273 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Aleksandr Mezin,
Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit 080bbf42faf77e6489ab30d5114c5f8f6ccbb1b8 ]
Sashiko reports:
When send_output_report() calls hid_hw_output_report(), the underlying USB
HID core calls usb_interrupt_msg() which maps this buffer directly for DMA.
When the DMA mapping flushes or invalidates the cacheline, it will corrupt
the adjacent variables (mutex, update_interval) that were modified
concurrently by the CPU. This causes memory corruption due to cacheline
sharing on non-coherent CPU architectures (such as ARM or MIPS). The DMA
API debugging tool (CONFIG_DMA_API_DEBUG) will trigger runtime warnings
for this violation.
Any operation that triggers send_output_report() (like setting a fan speed
or updating the interval) causes the USB DMA mapping. On systems with
non-coherent caches, this structural bug causes immediate and deterministic
memory corruption.
Align the output buffer to ARCH_DMA_MINALIGN to fix the problem.
Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: 53e68c20aeb1 ("hwmon: add driver for NZXT RGB&Fan Controller/Smart Device v2.")
Cc: Aleksandr Mezin <mezin.alexander@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/nzxt-smart2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/nzxt-smart2.c b/drivers/hwmon/nzxt-smart2.c
index 6f8febda4277c..66c5886f411a6 100644
--- a/drivers/hwmon/nzxt-smart2.c
+++ b/drivers/hwmon/nzxt-smart2.c
@@ -203,7 +203,7 @@ struct drvdata {
*/
struct mutex mutex;
long update_interval;
- u8 output_buffer[OUTPUT_REPORT_SIZE];
+ u8 output_buffer[OUTPUT_REPORT_SIZE] __aligned(ARCH_DMA_MINALIGN);
};
static long scale_pwm_value(long val, long orig_max, long new_max)
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 072/337] net: do not send ICMP/NDISC Redirects when peer allocation fails
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (69 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 071/337] hwmon: (nzxt-smart2) DMA-align output buffer Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 073/337] hwmon: (nct6775-core) Prevent access to unsupported weight registers Greg Kroah-Hartman
` (272 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Ido Schimmel,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit dbc3791e3b2472e1ccc08947e0f83b443470ff4f ]
When inet_getpeer_v4() or inet_getpeer_v6() fails to allocate a peer entry
under memory pressure or tree size caps, redirect handlers previously fell
back to sending un-rate-limited ICMP/NDISC Redirect messages.
In IPv4, ip_rt_send_redirect() called icmp_send() directly when peer == NULL.
In IPv6, ip6_forward() and ndisc_send_redirect() passed a NULL peer into
inet_peer_xrlim_allow(), which returned true when peer == NULL.
Because ICMP/NDISC Redirects are not part of the default global rate limit
mask (sysctl_icmp_ratemask), sending redirects when peer == NULL creates
an un-rate-limited ICMP packet storm.
Fix this by failing closed in ip_rt_send_redirect(), ip6_forward(), and
ndisc_send_redirect() when peer is NULL.
Fixes: 92d868292634 ("inetpeer: Move ICMP rate limiting state into inet_peer entries.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260724072901.1633601-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/route.c | 2 --
net/ipv6/ip6_output.c | 2 +-
net/ipv6/ndisc.c | 2 ++
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 4dce0de6ab898..2b8c29a29c4ae 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -890,8 +890,6 @@ void ip_rt_send_redirect(struct sk_buff *skb)
peer = inet_getpeer_v4(net->ipv4.peers, ip_hdr(skb)->saddr, vif);
if (!peer) {
rcu_read_unlock();
- icmp_send(skb, ICMP_REDIRECT, ICMP_REDIR_HOST,
- rt_nexthop(rt, ip_hdr(skb)->daddr));
return;
}
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 50b41be5d38d0..5d17982cb9946 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -627,7 +627,7 @@ int ip6_forward(struct sk_buff *skb)
/* Limit redirects both by destination (here)
and by source (inside ndisc_send_redirect)
*/
- if (inet_peer_xrlim_allow(peer, 1*HZ))
+ if (peer && inet_peer_xrlim_allow(peer, 1*HZ))
ndisc_send_redirect(skb, target);
rcu_read_unlock();
} else {
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 73e2e457e30be..1a759519a90f9 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1739,6 +1739,8 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
rcu_read_lock();
peer = inet_getpeer_v6(net->ipv6.peers, &ipv6_hdr(skb)->saddr);
+ if (!peer)
+ goto release;
ret = inet_peer_xrlim_allow(peer, 1*HZ);
rcu_read_unlock();
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 073/337] hwmon: (nct6775-core) Prevent access to unsupported weight registers
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (70 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 072/337] net: do not send ICMP/NDISC Redirects when peer allocation fails Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 074/337] net: bridge: mrp: fix Option TLV length in MRP_Test frames Greg Kroah-Hartman
` (271 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Björn Gerhart,
Florian Bezdeka, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit d0b704e569ac3b8416d8e02270cdc9bf830ed395 ]
Sashiko reports:
During initialization of the nct6116 chip, the driver sets data->pwm_num
to 5. However, it assigns several NCT6106 register arrays (such as
NCT6106_REG_WEIGHT_DUTY_STEP, NCT6106_REG_WEIGHT_TEMP_SEL, and
NCT6106_REG_WEIGHT_TEMP_*) to data->REG_PWM and data->REG_WEIGHT_TEMP.
These arrays only contain 3 elements.
In nct6775_update_pwm(), the driver iterates up to data->pwm_num. If
data->has_pwm has bits 3 or 4 set (which is structurally possible for
nct6116), the loop attempts to read elements at index 3 and 4 from these
3-element arrays. This results in a global out-of-bounds read, which can
be caught by KASAN.
Furthermore, the driver uses these garbage out-of-bounds values as
hardware register addresses for subsequent read and write operations. This
leads to invalid hardware register access, potentially causing hardware
misconfiguration or system crashes.
The underlying problem is that the chip does support up to five fan
control channels, but only the first three support weight control.
Fix the problem by extending the affected weight register arrays with
zeroed fields. The driver uses zeroed register addresses to determine
if a register is supported or not, and skips accesses for unsupported
registers.
Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: 29c7cb485b32 ("hwmon: (nct6775) Integrate new model nct6116")
Cc: Björn Gerhart <gerhart@posteo.de>
Cc: Florian Bezdeka <florian.bezdeka@siemens.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/nct6775-core.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/hwmon/nct6775-core.c b/drivers/hwmon/nct6775-core.c
index 506d57025c3bd..ce2cf1f229004 100644
--- a/drivers/hwmon/nct6775-core.c
+++ b/drivers/hwmon/nct6775-core.c
@@ -791,12 +791,12 @@ static const u16 NCT6106_REG_TOLERANCE_H[] = { 0x112, 0x122, 0x132 };
static const u16 NCT6106_REG_TARGET[] = { 0x111, 0x121, 0x131 };
-static const u16 NCT6106_REG_WEIGHT_TEMP_SEL[] = { 0x168, 0x178, 0x188 };
-static const u16 NCT6106_REG_WEIGHT_TEMP_STEP[] = { 0x169, 0x179, 0x189 };
-static const u16 NCT6106_REG_WEIGHT_TEMP_STEP_TOL[] = { 0x16a, 0x17a, 0x18a };
-static const u16 NCT6106_REG_WEIGHT_DUTY_STEP[] = { 0x16b, 0x17b, 0x18b };
-static const u16 NCT6106_REG_WEIGHT_TEMP_BASE[] = { 0x16c, 0x17c, 0x18c };
-static const u16 NCT6106_REG_WEIGHT_DUTY_BASE[] = { 0x16d, 0x17d, 0x18d };
+static const u16 NCT6106_REG_WEIGHT_TEMP_SEL[] = { 0x168, 0x178, 0x188, 0, 0 };
+static const u16 NCT6106_REG_WEIGHT_TEMP_STEP[] = { 0x169, 0x179, 0x189, 0, 0 };
+static const u16 NCT6106_REG_WEIGHT_TEMP_STEP_TOL[] = { 0x16a, 0x17a, 0x18a, 0, 0 };
+static const u16 NCT6106_REG_WEIGHT_DUTY_STEP[] = { 0x16b, 0x17b, 0x18b, 0, 0 };
+static const u16 NCT6106_REG_WEIGHT_TEMP_BASE[] = { 0x16c, 0x17c, 0x18c, 0, 0 };
+static const u16 NCT6106_REG_WEIGHT_DUTY_BASE[] = { 0x16d, 0x17d, 0x18d, 0, 0 };
static const u16 NCT6106_REG_AUTO_TEMP[] = { 0x160, 0x170, 0x180 };
static const u16 NCT6106_REG_AUTO_PWM[] = { 0x164, 0x174, 0x184 };
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 074/337] net: bridge: mrp: fix Option TLV length in MRP_Test frames
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (71 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 073/337] hwmon: (nct6775-core) Prevent access to unsupported weight registers Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 075/337] forcedeth: fix UAF of txrx_stats in nv_remove Greg Kroah-Hartman
` (270 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Corvaglia, Nikolay Aleksandrov,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Corvaglia <david@corvaglia.dev>
[ Upstream commit 5546da86894d5906f131b05890705a7abf949d84 ]
oui is a pointer, so sizeof(oui) is the pointer size. The MRA
Option TLV thus advertises a wrong length (15 vs 10 on x86_64),
causing misparsing of the frame on peers. Fix is to replace
with sizeof(*oui).
Fixes: f7458934b079 ("net: bridge: mrp: Update the Test frames for MRA")
Signed-off-by: David Corvaglia <david@corvaglia.dev>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260726062605.2746-1-david@corvaglia.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bridge/br_mrp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bridge/br_mrp.c b/net/bridge/br_mrp.c
index fd2de35ffb3cf..5fd22bb4f5b60 100644
--- a/net/bridge/br_mrp.c
+++ b/net/bridge/br_mrp.c
@@ -215,7 +215,7 @@ static struct sk_buff *br_mrp_alloc_test_skb(struct br_mrp *mrp,
struct br_mrp_oui_hdr *oui = NULL;
u8 length;
- length = sizeof(*sub_opt) + sizeof(*sub_tlv) + sizeof(oui) +
+ length = sizeof(*sub_opt) + sizeof(*sub_tlv) + sizeof(*oui) +
MRP_OPT_PADDING;
br_mrp_skb_tlv(skb, BR_MRP_TLV_HEADER_OPTION, length);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 075/337] forcedeth: fix UAF of txrx_stats in nv_remove
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (72 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 074/337] net: bridge: mrp: fix Option TLV length in MRP_Test frames Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 076/337] hwmon: (adt7470) Fix fans stuck in manual mode on I2C errors Greg Kroah-Hartman
` (269 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chenguang Zhao, Vadim Fedorenko,
Zhu Yanjun, Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chenguang Zhao <zhaochenguang@kylinos.cn>
[ Upstream commit 22666ba1420164753d7b0f5a841986b25ace5435 ]
nv_remove() frees the per-CPU txrx_stats before unregister_netdev().
Until unregister completes, ndo_get_stats64, the NAPI/xmit data path,
and nv_close()/drain may still access txrx_stats, leading to a
use-after-free.
Free the stats only after unregister_netdev().
Fixes: f4b633b911fd ("forcedeth: use per cpu to collect xmit/recv statistics")
Signed-off-by: Chenguang Zhao <zhaochenguang@kylinos.cn>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Link: https://patch.msgid.link/20260723092637.2135095-1-chenguang.zhao@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/nvidia/forcedeth.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 720f577929dbf..11eb3751ad27b 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -6199,10 +6199,10 @@ static void nv_remove(struct pci_dev *pci_dev)
struct net_device *dev = pci_get_drvdata(pci_dev);
struct fe_priv *np = netdev_priv(dev);
- free_percpu(np->txrx_stats);
-
unregister_netdev(dev);
+ free_percpu(np->txrx_stats);
+
nv_restore_mac_addr(pci_dev);
/* restore any phy related changes */
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 076/337] hwmon: (adt7470) Fix fans stuck in manual mode on I2C errors
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (73 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 075/337] forcedeth: fix UAF of txrx_stats in nv_remove Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 077/337] hwmon: (adt7470) Fix cache updated before hardware write on I2C error Greg Kroah-Hartman
` (268 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot,
Luiz Angelo Daros de Luca, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luiz Angelo Daros de Luca <luizluca@gmail.com>
[ Upstream commit 625a2c02a1c04571232a746fe188b4d9a8d63edd ]
During adt7470_read_temperatures(), the driver temporarily switches
the PWM channels to manual mode, performs the temperature collection,
and then restores the original configuration registers.
However, if an I2C transaction fails at any point after entering manual
mode, the function aborts and returns immediately. This leaves the
configuration registers un-restored, permanently trapping the fans in
manual mode.
Introduce a recovery path to ensure that the original PWM configuration
registers are always restored, even when intermediate I2C operations
fail.
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/r/20260716213252.EACA71F000E9@smtp.kernel.org
Fixes: ef67959c4253 ("hwmon: (adt7470) Convert to use regmap")
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20260727-adt7470_fixes-v2-1-598e38a46ba6@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/adt7470.c | 40 +++++++++++++++++++++++++++++-----------
1 file changed, 29 insertions(+), 11 deletions(-)
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index dbee6926fa055..ef8f411df61be 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -205,11 +205,12 @@ static inline int adt7470_write_word_data(struct adt7470_data *data, unsigned in
/* Probe for temperature sensors. Assumes lock is held */
static int adt7470_read_temperatures(struct adt7470_data *data)
{
- unsigned long res;
+ struct device *dev = regmap_get_device(data->regmap);
+ u8 pwm[ADT7470_FAN_COUNT];
unsigned int pwm_cfg[2];
- int err;
+ unsigned long res;
+ int err, err2;
int i;
- u8 pwm[ADT7470_FAN_COUNT];
/* save pwm[1-4] config register */
err = regmap_read(data->regmap, ADT7470_REG_PWM_CFG(0), &pwm_cfg[0]);
@@ -233,19 +234,19 @@ static int adt7470_read_temperatures(struct adt7470_data *data)
err = regmap_update_bits(data->regmap, ADT7470_REG_PWM_CFG(2),
ADT7470_PWM_AUTO_MASK, 0);
if (err < 0)
- return err;
+ goto out_restore;
/* write pwm control to whatever it was */
err = regmap_bulk_write(data->regmap, ADT7470_REG_PWM(0), &pwm[0],
ADT7470_PWM_COUNT);
if (err < 0)
- return err;
+ goto out_restore;
/* start reading temperature sensors */
err = regmap_update_bits(data->regmap, ADT7470_REG_CFG,
ADT7470_T05_STB_MASK, ADT7470_T05_STB_MASK);
if (err < 0)
- return err;
+ goto out_restore;
/* Delay is 200ms * number of temp sensors. */
res = msleep_interruptible((data->num_temp_sensors >= 0 ?
@@ -256,13 +257,30 @@ static int adt7470_read_temperatures(struct adt7470_data *data)
err = regmap_update_bits(data->regmap, ADT7470_REG_CFG,
ADT7470_T05_STB_MASK, 0);
if (err < 0)
- return err;
+ goto out_restore;
+out_restore:
/* restore pwm[1-4] config registers */
- err = regmap_write(data->regmap, ADT7470_REG_PWM_CFG(0), pwm_cfg[0]);
- if (err < 0)
- return err;
- err = regmap_write(data->regmap, ADT7470_REG_PWM_CFG(2), pwm_cfg[1]);
+ err2 = regmap_write(data->regmap, ADT7470_REG_PWM_CFG(0), pwm_cfg[0]);
+ if (err2 < 0) {
+ dev_warn_ratelimited(dev,
+ "failed to restore PWM{1,2} config (%d)\n",
+ err2);
+
+ if (!err)
+ err = err2;
+ }
+
+ err2 = regmap_write(data->regmap, ADT7470_REG_PWM_CFG(2), pwm_cfg[1]);
+ if (err2 < 0) {
+ dev_warn_ratelimited(dev,
+ "failed to restore PWM{3,4} config (%d)\n",
+ err2);
+
+ if (!err)
+ err = err2;
+ }
+
if (err < 0)
return err;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 077/337] hwmon: (adt7470) Fix cache updated before hardware write on I2C error
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (74 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 076/337] hwmon: (adt7470) Fix fans stuck in manual mode on I2C errors Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 078/337] hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread Greg Kroah-Hartman
` (267 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Luiz Angelo Daros de Luca,
Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luiz Angelo Daros de Luca <luizluca@gmail.com>
[ Upstream commit 05270bd38d9bf88a2f4c212246a8fa29f4032078 ]
adt7470_temp_write() and adt7470_pwm_write() update the driver's
cached values (temp_min, temp_max, pwm_input, pwm_enable) before issuing
the corresponding regmap_write(), and never check whether the write
succeeded before committing that update. If the I2C transaction fails,
the function correctly propagates the error to the caller, but the cache
silently keeps the new value, which was never actually applied to the
hardware. Subsequent reads then report a value that does not match the
device state.
Reorder both write paths to update the cache only after a successful
regmap_write(), so the cache always reflects what was actually
written to the hardware.
Fixes: ef67959c4253 ("hwmon: (adt7470) Convert to use regmap")
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20260727-adt7470_fixes-v2-2-598e38a46ba6@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/adt7470.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index ef8f411df61be..06b19fd382457 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -589,14 +589,16 @@ static int adt7470_temp_write(struct device *dev, u32 attr, int channel, long va
switch (attr) {
case hwmon_temp_min:
mutex_lock(&data->lock);
- data->temp_min[channel] = val;
err = regmap_write(data->regmap, ADT7470_TEMP_MIN_REG(channel), val);
+ if (!err)
+ data->temp_min[channel] = val;
mutex_unlock(&data->lock);
break;
case hwmon_temp_max:
mutex_lock(&data->lock);
- data->temp_max[channel] = val;
err = regmap_write(data->regmap, ADT7470_TEMP_MAX_REG(channel), val);
+ if (!err)
+ data->temp_max[channel] = val;
mutex_unlock(&data->lock);
break;
default:
@@ -831,9 +833,10 @@ static int adt7470_pwm_write(struct device *dev, u32 attr, int channel, long val
case hwmon_pwm_input:
val = clamp_val(val, 0, 255);
mutex_lock(&data->lock);
- data->pwm[channel] = val;
err = regmap_write(data->regmap, ADT7470_REG_PWM(channel),
- data->pwm[channel]);
+ val);
+ if (!err)
+ data->pwm[channel] = val;
mutex_unlock(&data->lock);
break;
case hwmon_pwm_enable:
@@ -847,10 +850,11 @@ static int adt7470_pwm_write(struct device *dev, u32 attr, int channel, long val
val--;
mutex_lock(&data->lock);
- data->pwm_automatic[channel] = val;
err = regmap_update_bits(data->regmap, ADT7470_REG_PWM_CFG(channel),
pwm_auto_reg_mask,
val ? pwm_auto_reg_mask : 0);
+ if (!err)
+ data->pwm_automatic[channel] = val;
mutex_unlock(&data->lock);
break;
case hwmon_pwm_freq:
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 078/337] hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (75 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 077/337] hwmon: (adt7470) Fix cache updated before hardware write on I2C error Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 079/337] hwmon: (adt7470) Fix temperature alarm logic in hwmon_temp_read() Greg Kroah-Hartman
` (266 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot,
Luiz Angelo Daros de Luca, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luiz Angelo Daros de Luca <luizluca@gmail.com>
[ Upstream commit cb0b7f9c43b0abbd422a7e4c2c85e91db429207c ]
When userspace configures 'auto_update_interval' to 0 via sysfs, the
background kthread executes schedule_timeout_interruptible(0), which
returns immediately.
If 'num_temp_sensors' is concurrently or previously set to 0, the
msleep_interruptible() delay inside adt7470_read_temperatures() also
becomes 0. This combination forces the background thread into a tight,
unbounded busy-loop, hogging the CPU and flooding the I2C bus with a
continuous stream of transactions.
Fix this vulnerability by raising the lower limit of the clamp_val in
auto_update_interval_store() from 0 to 500 milliseconds. This guarantees
a reasonable minimum sleep window between sensor updates, protecting the
system from intentional or accidental I2C bus denial of service.
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/r/20260716213252.EACA71F000E9@smtp.kernel.org
Fixes: 89fac11cb3e7 ("adt7470: make automatic fan control really work")
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20260727-adt7470_fixes-v2-3-598e38a46ba6@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/adt7470.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index 06b19fd382457..a927e0b6d3319 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -509,7 +509,7 @@ static ssize_t auto_update_interval_store(struct device *dev,
if (kstrtol(buf, 10, &temp))
return -EINVAL;
- temp = clamp_val(temp, 0, 60000);
+ temp = clamp_val(temp, 500, 60000);
mutex_lock(&data->lock);
data->auto_update_interval = temp;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 079/337] hwmon: (adt7470) Fix temperature alarm logic in hwmon_temp_read()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (76 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 078/337] hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 080/337] hwmon: (adt7470) Fix swapped PWM3 and PWM4 auto mode masks Greg Kroah-Hartman
` (265 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot,
Luiz Angelo Daros de Luca, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luiz Angelo Daros de Luca <luizluca@gmail.com>
[ Upstream commit 1a18c79c4bc44cc5349c60e16b0b744dc6ec5f77 ]
During the conversion the alarm callback started interpreting the
channel index as an alarm bitmask, resulting in incorrect alarm
reporting. Compute the proper alarm bit instead.
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/r/20260717211224.B9E291F000E9@smtp.kernel.org
Fixes: fc958a61ff6d ("hwmon: (adt7470) Convert to devm_hwmon_device_register_with_info API")
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20260727-adt7470_fixes-v2-5-598e38a46ba6@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/adt7470.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index a927e0b6d3319..41fa6a0e8b937 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -110,6 +110,21 @@ static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };
#define ALARM2(x) ((x) << 8)
+/* TEMP1..TEMP7 (ch 0..6) are, respectively BIT(0)..BIT(6) of reg 0x41 and
+ * 0x72, or BIT(0)..BIT(6) of data->alarm.
+ * TEMP8..TEMP9 (ch 7..9) are, respectively BIT(0)..BIT(2) of reg 0x42 and
+ * 0x73, or BIT(8)..BIT(10) of data->alarm.
+ */
+#define TEMP_ALARM_BIT(ch) ({ \
+ typeof(ch) _ch = (ch); \
+ (1 << (_ch < 7 ? _ch : _ch + 1)); \
+})
+
+/* FAN1..FAN4 (ch 0..3) are respectively BIT(4)..BIT(7) in
+ * reg 0x42 and 0x73 or BIT(12)..BIT(15) in data->alarm.
+ */
+#define FAN_ALARM_BIT(ch) (1 << (12 + (ch)))
+
#define ADT7470_VENDOR 0x41
#define ADT7470_DEVICE 0x70
/* datasheet only mentions a revision 2 */
@@ -569,7 +584,7 @@ static int adt7470_temp_read(struct device *dev, u32 attr, int channel, long *va
*val = 1000 * data->temp_max[channel];
break;
case hwmon_temp_alarm:
- *val = !!(data->alarm & channel);
+ *val = !!(data->alarm & TEMP_ALARM_BIT(channel));
break;
default:
return -EOPNOTSUPP;
@@ -668,7 +683,7 @@ static int adt7470_fan_read(struct device *dev, u32 attr, int channel, long *val
*val = 0;
break;
case hwmon_fan_alarm:
- *val = !!(data->alarm & (1 << (12 + channel)));
+ *val = !!(data->alarm & FAN_ALARM_BIT(channel));
break;
default:
return -EOPNOTSUPP;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 080/337] hwmon: (adt7470) Fix swapped PWM3 and PWM4 auto mode masks
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (77 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 079/337] hwmon: (adt7470) Fix temperature alarm logic in hwmon_temp_read() Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 081/337] hwmon: (adt7470) Use cached PWM frequency value Greg Kroah-Hartman
` (264 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Luiz Angelo Daros de Luca,
Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luiz Angelo Daros de Luca <luizluca@gmail.com>
[ Upstream commit a3850231521b06bbbb18c8ebea100320c14a08be ]
The ADT7470_PWM3_AUTO_MASK and ADT7470_PWM4_AUTO_MASK macros are
currently defined with swapped bit values.
According to Table 22 of the ADT7470 datasheet, the Fan Control Mode
Configuration for register 0x69 follows the exact same bit position
layout as register 0x68:
- 0x68 Bit[7] corresponds to BHVR1 (PWM1) -> 0x80
- 0x68 Bit[6] corresponds to BHVR2 (PWM2) -> 0x40
- 0x69 Bit[7] corresponds to BHVR3 (PWM3) -> 0x80
- 0x69 Bit[6] corresponds to BHVR4 (PWM4) -> 0x40
Consequently, PWM3 should use mask 0x80 and PWM4 should use 0x40.
This typo did not cause any functional bugs because these specific
macros are never referenced in the driver code. Instead, the driver
correctly applies the configuration by relying on the modulo parity of
the channel index (e.g., `channel % 2`) to selectively apply either
ADT7470_PWM1_AUTO_MASK (0x80) or ADT7470_PWM2_AUTO_MASK (0x40).
Since the bit layout is identical between the two configuration
registers, the hardware is currently configured correctly.
Fix the macro definitions to reflect the datasheet accurately and
prevent future bugs or confusion during code review and refactoring.
As this is a purely cosmetic fix with no functional impact, a backport
to stable kernels is not necessary.
Fixes: 6f9703d0be16 ("hwmon: add support for adt7470")
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20260727-adt7470_fixes-v2-4-598e38a46ba6@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/adt7470.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index 41fa6a0e8b937..f0a45538ded6d 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -70,8 +70,8 @@ static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };
#define ADT7470_PWM1_AUTO_MASK 0x80
#define ADT7470_PWM_AUTO_MASK 0xC0
#define ADT7470_REG_PWM34_CFG 0x69
-#define ADT7470_PWM3_AUTO_MASK 0x40
-#define ADT7470_PWM4_AUTO_MASK 0x80
+#define ADT7470_PWM4_AUTO_MASK 0x40
+#define ADT7470_PWM3_AUTO_MASK 0x80
#define ADT7470_REG_PWM_MIN_BASE_ADDR 0x6A
#define ADT7470_REG_PWM_MIN_MAX_ADDR 0x6D
#define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR 0x6E
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 081/337] hwmon: (adt7470) Use cached PWM frequency value
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (78 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 080/337] hwmon: (adt7470) Fix swapped PWM3 and PWM4 auto mode masks Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 082/337] hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read Greg Kroah-Hartman
` (263 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Luiz Angelo Daros de Luca,
Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luiz Angelo Daros de Luca <luizluca@gmail.com>
[ Upstream commit 60677cd4c28f44d5b307d3029dccece38fcce90f ]
adt7470_pwm_read() currently ignores failures returned by
pwm1_freq_get(). If the register read fails, the negative error code is
returned through *val while the function itself reports success,
potentially exposing a negative PWM frequency through sysfs.
Fix this by using the cached PWM frequency maintained by the driver,
eliminating the register access from the read path.
Apart from the corrected error propagation and using the cached value,
no functional change is intended.
Fixes: ef67959c4253 ("hwmon: (adt7470) Convert to use regmap")
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20260727-adt7470_fixes-v2-6-598e38a46ba6@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/adt7470.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index f0a45538ded6d..43c0130342622 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -182,6 +182,7 @@ struct adt7470_data {
u8 pwm_min[ADT7470_PWM_COUNT];
s8 pwm_tmin[ADT7470_PWM_COUNT];
u8 pwm_auto_temp[ADT7470_PWM_COUNT];
+ u32 pwm_freq;
struct task_struct *auto_update;
unsigned int auto_update_interval;
@@ -756,7 +757,7 @@ static ssize_t force_pwm_max_store(struct device *dev,
}
/* These are the valid PWM frequencies to the nearest Hz */
-static const int adt7470_freq_map[] = {
+static const u32 adt7470_freq_map[] = {
11, 15, 22, 29, 35, 44, 59, 88, 1400, 22500
};
@@ -796,7 +797,7 @@ static int adt7470_pwm_read(struct device *dev, u32 attr, int channel, long *val
*val = 1 + data->pwm_automatic[channel];
break;
case hwmon_pwm_freq:
- *val = pwm1_freq_get(dev);
+ *val = data->pwm_freq;
break;
default:
return -EOPNOTSUPP;
@@ -809,12 +810,14 @@ static int pwm1_freq_set(struct device *dev, long freq)
{
struct adt7470_data *data = dev_get_drvdata(dev);
unsigned int low_freq = ADT7470_CFG_LF;
+ u32 closest_freq;
int index;
int err;
/* Round the user value given to the closest available frequency */
index = find_closest(freq, adt7470_freq_map,
ARRAY_SIZE(adt7470_freq_map));
+ closest_freq = adt7470_freq_map[index];
if (index >= 8) {
index -= 8;
@@ -832,6 +835,10 @@ static int pwm1_freq_set(struct device *dev, long freq)
err = regmap_update_bits(data->regmap, ADT7470_REG_CFG_2,
ADT7470_FREQ_MASK,
index << ADT7470_FREQ_SHIFT);
+ if (err < 0)
+ goto out;
+
+ data->pwm_freq = closest_freq;
out:
mutex_unlock(&data->lock);
@@ -1285,6 +1292,7 @@ static int adt7470_probe(struct i2c_client *client)
struct device *dev = &client->dev;
struct adt7470_data *data;
struct device *hwmon_dev;
+ int freq_val;
int err;
data = devm_kzalloc(dev, sizeof(struct adt7470_data), GFP_KERNEL);
@@ -1309,6 +1317,14 @@ static int adt7470_probe(struct i2c_client *client)
if (err < 0)
return err;
+ freq_val = pwm1_freq_get(dev);
+ if (freq_val <= 0) {
+ err = freq_val < 0 ? freq_val : -EINVAL;
+ return err;
+ }
+
+ data->pwm_freq = (u32)freq_val;
+
/* Register sysfs hooks */
hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data,
&adt7470_chip_info,
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 082/337] hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (79 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 081/337] hwmon: (adt7470) Use cached PWM frequency value Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 083/337] hwmon: (adt7470) Fix PWM auto temp state array and bounds check Greg Kroah-Hartman
` (262 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot,
Luiz Angelo Daros de Luca, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luiz Angelo Daros de Luca <luizluca@gmail.com>
[ Upstream commit 1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3 ]
If the fan data becomes 0 between the FAN_DATA_VALID() check and the
FAN_PERIOD_TO_RPM() conversion, it will result in a divide-by-zero crash
due to a race with a concurrent update of the cached fan value.
Fix a TOCTOU issue by reading fan data once.
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/r/20260727034929.E29B71F000E9@smtp.kernel.org/
Fixes: fc958a61ff6d ("hwmon: (adt7470) Convert to devm_hwmon_device_register_with_info API")
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20260727-adt7470_fixes-v2-7-598e38a46ba6@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/adt7470.c | 23 ++++++++++-------------
1 file changed, 10 insertions(+), 13 deletions(-)
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index 43c0130342622..3a2d408a45be8 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -660,36 +660,33 @@ static ssize_t alarm_mask_store(struct device *dev,
static int adt7470_fan_read(struct device *dev, u32 attr, int channel, long *val)
{
struct adt7470_data *data = adt7470_update_device(dev);
+ u16 fan_data;
if (IS_ERR(data))
return PTR_ERR(data);
switch (attr) {
case hwmon_fan_input:
- if (FAN_DATA_VALID(data->fan[channel]))
- *val = FAN_PERIOD_TO_RPM(data->fan[channel]);
- else
- *val = 0;
+ fan_data = READ_ONCE(data->fan[channel]);
break;
case hwmon_fan_min:
- if (FAN_DATA_VALID(data->fan_min[channel]))
- *val = FAN_PERIOD_TO_RPM(data->fan_min[channel]);
- else
- *val = 0;
+ fan_data = READ_ONCE(data->fan_min[channel]);
break;
case hwmon_fan_max:
- if (FAN_DATA_VALID(data->fan_max[channel]))
- *val = FAN_PERIOD_TO_RPM(data->fan_max[channel]);
- else
- *val = 0;
+ fan_data = READ_ONCE(data->fan_max[channel]);
break;
case hwmon_fan_alarm:
*val = !!(data->alarm & FAN_ALARM_BIT(channel));
- break;
+ return 0;
default:
return -EOPNOTSUPP;
}
+ if (FAN_DATA_VALID(fan_data))
+ *val = FAN_PERIOD_TO_RPM(fan_data);
+ else
+ *val = 0;
+
return 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 083/337] hwmon: (adt7470) Fix PWM auto temp state array and bounds check
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (80 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 082/337] hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 084/337] rtase: fix double free of multi-frag skb on DMA map failure Greg Kroah-Hartman
` (261 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, sashiko-bot,
Luiz Angelo Daros de Luca, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luiz Angelo Daros de Luca <luizluca@gmail.com>
[ Upstream commit 92413f439d1ec5e55b73ede8d66a7b971cbd1ced ]
In pwm_auto_temp_store(), the parsed user input was missing bounds
checks, allowing values > 0xF to overflow into the adjacent channel's
bits. Furthermore, the value was being incorrectly written to the
pwm_automatic state array instead of pwm_auto_temp.
Fix this by rejecting values > 0xF with -EINVAL, and assigning the
value to the correct array only after a successful I2C write.
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/all/20260727034932.0B7C41F000E9@smtp.kernel.org/#t
Fixes: 6f9703d0be16 ("hwmon: add support for adt7470")
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20260727-adt7470_fixes-v2-8-598e38a46ba6@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/adt7470.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index 3a2d408a45be8..0fad4bfe53df6 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -1049,8 +1049,10 @@ static ssize_t pwm_auto_temp_store(struct device *dev,
if (temp < 0)
return temp;
+ if (temp > 0xF)
+ return -EINVAL;
+
mutex_lock(&data->lock);
- data->pwm_automatic[attr->index] = temp;
if (!(attr->index % 2)) {
mask = 0xF0;
@@ -1061,6 +1063,9 @@ static ssize_t pwm_auto_temp_store(struct device *dev,
}
err = regmap_update_bits(data->regmap, pwm_auto_reg, mask, val);
+ if (!err)
+ data->pwm_auto_temp[attr->index] = temp;
+
mutex_unlock(&data->lock);
return err < 0 ? err : count;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 084/337] rtase: fix double free of multi-frag skb on DMA map failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (81 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 083/337] hwmon: (adt7470) Fix PWM auto temp state array and bounds check Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 085/337] powerpc/boot: Fix simpleboot CPU node lookup check Greg Kroah-Hartman
` (260 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yun Lu, Jacob Keller, Justin Lai,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yun Lu <luyun@kylinos.cn>
[ Upstream commit 6fb7b769d6ed6d1d2e02af4a80e57a2477f35086 ]
In rtase_start_xmit(), when the head buffer DMA mapping fails after
rtase_xmit_frags() has mapped all fragments, the error path clears
the fragment descriptors with rtase_tx_clear_range(), which frees
the skb through the last-frag slot and accounts tx_dropped. Control
then falls through to the common error label, which frees the same
skb a second time and counts it again.
Return right after clearing the fragments when the skb owns frags;
the no-frag case still drops through and frees the head skb once.
Fixes: d6e882b89fdf ("rtase: Implement .ndo_start_xmit function")
Signed-off-by: Yun Lu <luyun@kylinos.cn>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Justin Lai <justinlai0215@realtek.com>
Link: https://patch.msgid.link/20260721023836.6691-1-luyun_611@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/realtek/rtase/rtase_main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/realtek/rtase/rtase_main.c b/drivers/net/ethernet/realtek/rtase/rtase_main.c
index a565d5fb6b85c..afae19cc99314 100644
--- a/drivers/net/ethernet/realtek/rtase/rtase_main.c
+++ b/drivers/net/ethernet/realtek/rtase/rtase_main.c
@@ -1609,6 +1609,9 @@ static netdev_tx_t rtase_start_xmit(struct sk_buff *skb,
err_dma_1:
ring->skbuff[entry] = NULL;
rtase_tx_clear_range(ring, ring->cur_idx + 1, frags);
+ if (frags)
+ /* the frags were cleared above, along with the skb */
+ return NETDEV_TX_OK;
err_dma_0:
tp->stats.tx_dropped++;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 085/337] powerpc/boot: Fix simpleboot CPU node lookup check
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (82 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 084/337] rtase: fix double free of multi-frag skb on DMA map failure Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 086/337] powerpc/boot: Fix treeboot-currituck " Greg Kroah-Hartman
` (259 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thorsten Blum, Ritesh Harjani (IBM),
Madhavan Srinivasan, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thorsten Blum <thorsten.blum@linux.dev>
[ Upstream commit c824ab65685bb119c6c6a3a200b3428c72862d5a ]
fdt_node_offset_by_prop_value() returns a negative error code on
failure - fix the check accordingly.
Fixes: d2477b5cc8ca ("[POWERPC] bootwrapper: Add a firmware-independent simpleboot target.")
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260702211554.56923-4-thorsten.blum@linux.dev
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/boot/simpleboot.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/boot/simpleboot.c b/arch/powerpc/boot/simpleboot.c
index c80691d83880b..27591df41e9e8 100644
--- a/arch/powerpc/boot/simpleboot.c
+++ b/arch/powerpc/boot/simpleboot.c
@@ -68,7 +68,7 @@ void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
/* finally, setup the timebase */
node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type",
"cpu", sizeof("cpu"));
- if (!node)
+ if (node < 0)
fatal("Cannot find cpu node\n");
timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size);
if (timebase && (size == 4))
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 086/337] powerpc/boot: Fix treeboot-currituck CPU node lookup check
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (83 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 085/337] powerpc/boot: Fix simpleboot CPU node lookup check Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 087/337] powerpc/boot: Fix treeboot-akebono " Greg Kroah-Hartman
` (258 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thorsten Blum, Ritesh Harjani (IBM),
Madhavan Srinivasan, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thorsten Blum <thorsten.blum@linux.dev>
[ Upstream commit 43863f6575d2211e8c5157fefb83ad0ad046aab4 ]
fdt_node_offset_by_prop_value() returns a negative error code on
failure - fix the check accordingly.
Fixes: 228d55053397 ("powerpc/47x: Add support for the new IBM currituck platform")
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260702211554.56923-5-thorsten.blum@linux.dev
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/boot/treeboot-currituck.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/boot/treeboot-currituck.c b/arch/powerpc/boot/treeboot-currituck.c
index d53e8a592f816..5b5363b74f9f3 100644
--- a/arch/powerpc/boot/treeboot-currituck.c
+++ b/arch/powerpc/boot/treeboot-currituck.c
@@ -102,7 +102,7 @@ void platform_init(void)
node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type",
"cpu", sizeof("cpu"));
- if (!node)
+ if (node < 0)
fatal("Cannot find cpu node\n");
timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size);
if (timebase && (size == 4))
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 087/337] powerpc/boot: Fix treeboot-akebono CPU node lookup check
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (84 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 086/337] powerpc/boot: Fix treeboot-currituck " Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 088/337] net: udp_tunnel: fix memory leak in udp_tunnel_nic_unregister() Greg Kroah-Hartman
` (257 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thorsten Blum, Ritesh Harjani (IBM),
Madhavan Srinivasan, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thorsten Blum <thorsten.blum@linux.dev>
[ Upstream commit b24fc8278b70a9d27ec801a427ab4de9b769d69a ]
fdt_node_offset_by_prop_value() returns a negative error code on
failure - fix the check accordingly.
Fixes: 2a2c74b2efcb ("IBM Akebono: Add the Akebono platform")
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260702211554.56923-6-thorsten.blum@linux.dev
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/boot/treeboot-akebono.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/boot/treeboot-akebono.c b/arch/powerpc/boot/treeboot-akebono.c
index e3cc2599869cc..1b529037480fb 100644
--- a/arch/powerpc/boot/treeboot-akebono.c
+++ b/arch/powerpc/boot/treeboot-akebono.c
@@ -146,7 +146,7 @@ void platform_init(char *userdata)
node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type",
"cpu", sizeof("cpu"));
- if (!node)
+ if (node < 0)
fatal("Cannot find cpu node\n");
timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size);
if (timebase && (size == 4))
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 088/337] net: udp_tunnel: fix memory leak in udp_tunnel_nic_unregister()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (85 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 087/337] powerpc/boot: Fix treeboot-akebono " Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 089/337] wifi: mac80211: validate individual TWT params before driver setup Greg Kroah-Hartman
` (256 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, syzbot+eca845fb8c18dd6b44c1,
Eric Dumazet, Paolo Abeni, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 080695e6f005e2396f1207fd69d24c442cb230c6 ]
syzbot reported a memory leak [1] in the UDP tunnel NIC offload code.
When device registration fails (e.g. in register_netdevice()), netdev core
unwinds by sending a single NETDEV_UNREGISTER notification. If work was queued
during NETDEV_REGISTER (utn->work_pending is set), udp_tunnel_nic_unregister()
returns early:
if (utn->work_pending)
return;
Because failed registrations do not enter netdev_wait_allrefs_any(), no
subsequent NETDEV_UNREGISTER rebroadcast will ever occur. As a result, the
struct udp_tunnel_nic allocated in udp_tunnel_nic_alloc() is leaked
permanently.
Fix this by removing the early return. Instead, synchronously cancel any
pending work with cancel_delayed_work_sync() before freeing @utn.
To be able to call cancel_delayed_work_sync() while holding RTNL (the work also
needs RTNL), switch udp_tunnel_nic_device_sync_work() to rtnl_trylock(). If RTNL
is contended, requeue the work with a 1 jiffy delay (via queue_delayed_work())
to prevent high CPU contention while waiting for RTNL lock.
The utn->work_pending bookkeeping is no longer needed and is removed, as
the workqueue core already tracks the pending/running state of the work.
[1]
BUG: memory leak
unreferenced object 0xffff888127d5f840 (size 96):
comm "syz-executor", pid 5806, jiffies 4294942188
backtrace (crc 99fdb6c8):
__kmalloc_noprof+0x3bf/0x550
udp_tunnel_nic_alloc net/ipv4/udp_tunnel_nic.c:756 [inline]
udp_tunnel_nic_register net/ipv4/udp_tunnel_nic.c:833 [inline]
udp_tunnel_nic_netdevice_event+0x804/0xab0 net/ipv4/udp_tunnel_nic.c:931
notifier_call_chain+0x59/0x160 kernel/notifier.c:85
call_netdevice_notifiers_info+0x7d/0xb0 net/core/dev.c:2250
register_netdevice+0xc10/0xeb0 net/core/dev.c:11478
Fixes: cc4e3835eff4 ("udp_tunnel: add central NIC RX port offload infrastructure")
Reported-by: syzbot+eca845fb8c18dd6b44c1@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/6a632b15.dde6c935.cf6c8.0011.GAE@google.com/T/#u
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260724091137.1792543-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/ipv4/udp_tunnel_nic.c | 32 +++++++++++++++++---------------
1 file changed, 17 insertions(+), 15 deletions(-)
diff --git a/net/ipv4/udp_tunnel_nic.c b/net/ipv4/udp_tunnel_nic.c
index b13e8f7092f46..4360d159ee8a7 100644
--- a/net/ipv4/udp_tunnel_nic.c
+++ b/net/ipv4/udp_tunnel_nic.c
@@ -32,13 +32,12 @@ struct udp_tunnel_nic_table_entry {
* @lock: protects all fields
* @need_sync: at least one port start changed
* @need_replay: space was freed, we need a replay of all ports
- * @work_pending: @work is currently scheduled
* @n_tables: number of tables under @entries
* @missed: bitmap of tables which overflown
* @entries: table of tables of ports currently offloaded
*/
struct udp_tunnel_nic {
- struct work_struct work;
+ struct delayed_work work;
struct net_device *dev;
@@ -46,7 +45,6 @@ struct udp_tunnel_nic {
u8 need_sync:1;
u8 need_replay:1;
- u8 work_pending:1;
unsigned int n_tables;
unsigned long missed;
@@ -301,11 +299,10 @@ __udp_tunnel_nic_device_sync(struct net_device *dev, struct udp_tunnel_nic *utn)
static void
udp_tunnel_nic_device_sync(struct net_device *dev, struct udp_tunnel_nic *utn)
{
- if (!utn->need_sync || utn->work_pending)
+ if (!utn->need_sync)
return;
- queue_work(udp_tunnel_nic_workqueue, &utn->work);
- utn->work_pending = 1;
+ queue_delayed_work(udp_tunnel_nic_workqueue, &utn->work, 0);
}
static bool
@@ -731,12 +728,17 @@ udp_tunnel_nic_replay(struct net_device *dev, struct udp_tunnel_nic *utn)
static void udp_tunnel_nic_device_sync_work(struct work_struct *work)
{
struct udp_tunnel_nic *utn =
- container_of(work, struct udp_tunnel_nic, work);
+ container_of(work, struct udp_tunnel_nic, work.work);
- rtnl_lock();
+ /* We cannot block on RTNL here, otherwise we would deadlock with
+ * udp_tunnel_nic_unregister() calling cancel_delayed_work_sync()
+ * while holding RTNL. Requeue with 1 jiffy delay if RTNL is contended.
+ */
+ if (!rtnl_trylock()) {
+ queue_delayed_work(udp_tunnel_nic_workqueue, &utn->work, 1);
+ return;
+ }
mutex_lock(&utn->lock);
-
- utn->work_pending = 0;
__udp_tunnel_nic_device_sync(utn->dev, utn);
if (utn->need_replay)
@@ -757,7 +759,7 @@ udp_tunnel_nic_alloc(const struct udp_tunnel_nic_info *info,
if (!utn)
return NULL;
utn->n_tables = n_tables;
- INIT_WORK(&utn->work, udp_tunnel_nic_device_sync_work);
+ INIT_DELAYED_WORK(&utn->work, udp_tunnel_nic_device_sync_work);
mutex_init(&utn->lock);
for (i = 0; i < n_tables; i++) {
@@ -901,11 +903,11 @@ udp_tunnel_nic_unregister(struct net_device *dev, struct udp_tunnel_nic *utn)
udp_tunnel_nic_flush(dev, utn);
udp_tunnel_nic_unlock(dev);
- /* Wait for the work to be done using the state, netdev core will
- * retry unregister until we give up our reference on this device.
+ /* Make sure no work is running or queued before freeing @utn.
+ * The work handler uses rtnl_trylock(), so it will not deadlock
+ * against the RTNL we are holding here.
*/
- if (utn->work_pending)
- return;
+ cancel_delayed_work_sync(&utn->work);
udp_tunnel_nic_free(utn);
release_dev:
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 089/337] wifi: mac80211: validate individual TWT params before driver setup
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (86 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 088/337] net: udp_tunnel: fix memory leak in udp_tunnel_nic_unregister() Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 090/337] net: ethernet: mtk_eth_soc: support named IRQs Greg Kroah-Hartman
` (255 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhao Li, Johannes Berg, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
[ Upstream commit 0502d5077e419427d80f4d46ba95d0067f5fb916 ]
ieee80211_process_rx_twt_action() only partially validates a received
S1G TWT setup frame before queueing it.
An individual agreement can therefore reach ieee80211_s1g_rx_twt_setup()
with twt->length too short for the full struct ieee80211_twt_params.
The individual path passes twt to drv_add_twt_setup(). Both the tracepoint
and the driver callback consume the complete parameters block, not merely
req_type. Do not pass a short individual agreement to the driver.
Broadcast agreements remain unchanged because they are rejected locally
after accessing only req_type.
Fixes: f5a4c24e689f ("mac80211: introduce individual TWT support in AP mode")
Assisted-by: Codex:gpt-5
Assisted-by: Claude:opus-4.8
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260723010928.76551-1-enderaoelyther@gmail.com
[edit commit message to not overclaim lack of validation nor
understate driver impact]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/mac80211/s1g.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/mac80211/s1g.c b/net/mac80211/s1g.c
index d4ed0c0a335ca..2a23e431cbb5a 100644
--- a/net/mac80211/s1g.c
+++ b/net/mac80211/s1g.c
@@ -101,6 +101,10 @@ ieee80211_s1g_rx_twt_setup(struct ieee80211_sub_if_data *sdata,
struct ieee80211_twt_setup *twt = (void *)mgmt->u.action.u.s1g.variable;
struct ieee80211_twt_params *twt_agrt = (void *)twt->params;
+ if (!(twt->control & IEEE80211_TWT_CONTROL_NEG_TYPE_BROADCAST) &&
+ twt->length < sizeof(twt->control) + sizeof(*twt_agrt))
+ return;
+
twt_agrt->req_type &= cpu_to_le16(~IEEE80211_TWT_REQTYPE_REQUEST);
/* broadcast TWT not supported yet */
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 090/337] net: ethernet: mtk_eth_soc: support named IRQs
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (87 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 089/337] wifi: mac80211: validate individual TWT params before driver setup Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 091/337] net: ethernet: mtk_eth_soc: add consts for irq index Greg Kroah-Hartman
` (254 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Frank Wunderlich, Simon Horman,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Frank Wunderlich <frank-w@public-files.de>
[ Upstream commit ee85b483fefbbebe1e6e61c53169f864bbdd8f13 ]
Add named interrupts and keep index based fallback for existing
devicetrees.
Currently only rx and tx IRQs are defined to be used with mt7988, but
later extended with RSS/LRO support.
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250619132125.78368-2-linux@fw-web.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: e095f249e220 ("net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 46 ++++++++++++++++-----
1 file changed, 35 insertions(+), 11 deletions(-)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index ebf5432cb328d..4305779459efd 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -3210,6 +3210,37 @@ static void mtk_tx_timeout(struct net_device *dev, unsigned int txqueue)
schedule_work(ð->pending_work);
}
+static int mtk_get_irqs(struct platform_device *pdev, struct mtk_eth *eth)
+{
+ int i;
+
+ /* future SoCs beginning with MT7988 should use named IRQs in dts */
+ eth->irq[1] = platform_get_irq_byname(pdev, "fe1");
+ eth->irq[2] = platform_get_irq_byname(pdev, "fe2");
+ if (eth->irq[1] >= 0 && eth->irq[2] >= 0)
+ return 0;
+
+ /* legacy way:
+ * On MTK_SHARED_INT SoCs (MT7621 + MT7628) the first IRQ is taken
+ * from devicetree and used for both RX and TX - it is shared.
+ * On SoCs with non-shared IRQs the first entry is not used,
+ * the second is for TX, and the third is for RX.
+ */
+ for (i = 0; i < 3; i++) {
+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_INT) && i > 0)
+ eth->irq[i] = eth->irq[0];
+ else
+ eth->irq[i] = platform_get_irq(pdev, i);
+
+ if (eth->irq[i] < 0) {
+ dev_err(&pdev->dev, "no IRQ%d resource found\n", i);
+ return -ENXIO;
+ }
+ }
+
+ return 0;
+}
+
static irqreturn_t mtk_handle_irq_rx(int irq, void *_eth)
{
struct mtk_eth *eth = _eth;
@@ -4986,17 +5017,10 @@ static int mtk_probe(struct platform_device *pdev)
}
}
- for (i = 0; i < 3; i++) {
- if (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_INT) && i > 0)
- eth->irq[i] = eth->irq[0];
- else
- eth->irq[i] = platform_get_irq(pdev, i);
- if (eth->irq[i] < 0) {
- dev_err(&pdev->dev, "no IRQ%d resource found\n", i);
- err = -ENXIO;
- goto err_wed_exit;
- }
- }
+ err = mtk_get_irqs(pdev, eth);
+ if (err)
+ goto err_wed_exit;
+
for (i = 0; i < ARRAY_SIZE(eth->clks); i++) {
eth->clks[i] = devm_clk_get(eth->dev,
mtk_clks_source_name[i]);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 091/337] net: ethernet: mtk_eth_soc: add consts for irq index
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (88 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 090/337] net: ethernet: mtk_eth_soc: support named IRQs Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 092/337] net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller Greg Kroah-Hartman
` (253 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Frank Wunderlich, Simon Horman,
Daniel Golle, Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Frank Wunderlich <frank-w@public-files.de>
[ Upstream commit 4981901009923c8889a635a928d55b8f7f8b31ec ]
Use consts instead of fixed integers for accessing IRQ array.
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/20250619132125.78368-3-linux@fw-web.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: e095f249e220 ("net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 22 ++++++++++-----------
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 7 ++++++-
2 files changed, 17 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 4305779459efd..c18d4a143aac9 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -3215,9 +3215,9 @@ static int mtk_get_irqs(struct platform_device *pdev, struct mtk_eth *eth)
int i;
/* future SoCs beginning with MT7988 should use named IRQs in dts */
- eth->irq[1] = platform_get_irq_byname(pdev, "fe1");
- eth->irq[2] = platform_get_irq_byname(pdev, "fe2");
- if (eth->irq[1] >= 0 && eth->irq[2] >= 0)
+ eth->irq[MTK_FE_IRQ_TX] = platform_get_irq_byname(pdev, "fe1");
+ eth->irq[MTK_FE_IRQ_RX] = platform_get_irq_byname(pdev, "fe2");
+ if (eth->irq[MTK_FE_IRQ_TX] >= 0 && eth->irq[MTK_FE_IRQ_RX] >= 0)
return 0;
/* legacy way:
@@ -3226,9 +3226,9 @@ static int mtk_get_irqs(struct platform_device *pdev, struct mtk_eth *eth)
* On SoCs with non-shared IRQs the first entry is not used,
* the second is for TX, and the third is for RX.
*/
- for (i = 0; i < 3; i++) {
+ for (i = 0; i < MTK_FE_IRQ_NUM; i++) {
if (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_INT) && i > 0)
- eth->irq[i] = eth->irq[0];
+ eth->irq[i] = eth->irq[MTK_FE_IRQ_SHARED];
else
eth->irq[i] = platform_get_irq(pdev, i);
@@ -3294,7 +3294,7 @@ static void mtk_poll_controller(struct net_device *dev)
mtk_tx_irq_disable(eth, MTK_TX_DONE_INT);
mtk_rx_irq_disable(eth, eth->soc->rx.irq_done_mask);
- mtk_handle_irq_rx(eth->irq[2], dev);
+ mtk_handle_irq_rx(eth->irq[MTK_FE_IRQ_RX], dev);
mtk_tx_irq_enable(eth, MTK_TX_DONE_INT);
mtk_rx_irq_enable(eth, eth->soc->rx.irq_done_mask);
}
@@ -4787,7 +4787,7 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
eth->netdev[id]->features |= eth->soc->hw_features;
eth->netdev[id]->ethtool_ops = &mtk_ethtool_ops;
- eth->netdev[id]->irq = eth->irq[0];
+ eth->netdev[id]->irq = eth->irq[MTK_FE_IRQ_SHARED];
eth->netdev[id]->dev.of_node = np;
if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628))
@@ -5064,17 +5064,17 @@ static int mtk_probe(struct platform_device *pdev)
}
if (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_INT)) {
- err = devm_request_irq(eth->dev, eth->irq[0],
+ err = devm_request_irq(eth->dev, eth->irq[MTK_FE_IRQ_SHARED],
mtk_handle_irq, 0,
dev_name(eth->dev), eth);
} else {
- err = devm_request_irq(eth->dev, eth->irq[1],
+ err = devm_request_irq(eth->dev, eth->irq[MTK_FE_IRQ_TX],
mtk_handle_irq_tx, 0,
dev_name(eth->dev), eth);
if (err)
goto err_free_dev;
- err = devm_request_irq(eth->dev, eth->irq[2],
+ err = devm_request_irq(eth->dev, eth->irq[MTK_FE_IRQ_RX],
mtk_handle_irq_rx, 0,
dev_name(eth->dev), eth);
}
@@ -5120,7 +5120,7 @@ static int mtk_probe(struct platform_device *pdev)
} else
netif_info(eth, probe, eth->netdev[i],
"mediatek frame engine at 0x%08lx, irq %d\n",
- eth->netdev[i]->base_addr, eth->irq[0]);
+ eth->netdev[i]->base_addr, eth->irq[MTK_FE_IRQ_SHARED]);
}
/* we run 2 devices on the same DMA ring so we need a dummy device
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 0570623e569d5..76d60b6a23b2b 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -611,6 +611,11 @@
#define MTK_MAC_FSM(x) (0x1010C + ((x) * 0x100))
+#define MTK_FE_IRQ_SHARED 0
+#define MTK_FE_IRQ_TX 1
+#define MTK_FE_IRQ_RX 2
+#define MTK_FE_IRQ_NUM (MTK_FE_IRQ_RX + 1)
+
struct mtk_rx_dma {
unsigned int rxd1;
unsigned int rxd2;
@@ -1248,7 +1253,7 @@ struct mtk_eth {
struct net_device *dummy_dev;
struct net_device *netdev[MTK_MAX_DEVS];
struct mtk_mac *mac[MTK_MAX_DEVS];
- int irq[3];
+ int irq[MTK_FE_IRQ_NUM];
u32 msg_enable;
unsigned long sysclk;
struct regmap *ethsys;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 092/337] net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (89 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 091/337] net: ethernet: mtk_eth_soc: add consts for irq index Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 093/337] hwmon: (pmbus) Fix return value from pmbus_update_byte_data() Greg Kroah-Hartman
` (252 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chenguang Zhao, Paolo Abeni,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chenguang Zhao <zhaochenguang@kylinos.cn>
[ Upstream commit e095f249e2209674f6366f6db0383a2b96e19239 ]
mtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq
cookie), but mtk_poll_controller incorrectly passed the net_device *.
Calling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled
would then crash.
Fixes: 8186f6e382d8 ("net-next: mediatek: fix compile error inside mtk_poll_controller()")
Signed-off-by: Chenguang Zhao <zhaochenguang@kylinos.cn>
Link: https://patch.msgid.link/20260723055735.885112-1-chenguang.zhao@linux.dev
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index c18d4a143aac9..0d3346baa84e7 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -3294,7 +3294,7 @@ static void mtk_poll_controller(struct net_device *dev)
mtk_tx_irq_disable(eth, MTK_TX_DONE_INT);
mtk_rx_irq_disable(eth, eth->soc->rx.irq_done_mask);
- mtk_handle_irq_rx(eth->irq[MTK_FE_IRQ_RX], dev);
+ mtk_handle_irq_rx(eth->irq[MTK_FE_IRQ_RX], eth);
mtk_tx_irq_enable(eth, MTK_TX_DONE_INT);
mtk_rx_irq_enable(eth, eth->soc->rx.irq_done_mask);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 093/337] hwmon: (pmbus) Fix return value from pmbus_update_byte_data()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (90 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 092/337] net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 094/337] idpf: adjust TxQ ring count minimum Greg Kroah-Hartman
` (251 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Guenter Roeck, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guenter Roeck <linux@roeck-us.net>
[ Upstream commit a19038a200f18d9e74ac30081797917d0886e16b ]
pmbus_update_byte_data() is supposed to return a negative error code or 0.
However, if no change is made to the register, it actually returns the
register value. This can result in problems if the calling code explicitly
expects to see an error code or 0.
Fix it to return 0 on success or the error code as expected.
Fixes: 11c119986f270 ("hwmon: (pmbus) add helpers for byte write and read modify write")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/pmbus/pmbus_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index a431cce336034..e08e30f288130 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -508,7 +508,7 @@ int pmbus_update_byte_data(struct i2c_client *client, int page, u8 reg,
if (tmp != rv)
rv = _pmbus_write_byte_data(client, page, reg, tmp);
- return rv;
+ return rv < 0 ? rv : 0;
}
EXPORT_SYMBOL_NS_GPL(pmbus_update_byte_data, PMBUS);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 094/337] idpf: adjust TxQ ring count minimum
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (91 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 093/337] hwmon: (pmbus) Fix return value from pmbus_update_byte_data() Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 095/337] idpf: Fix mailbox IRQ name leak on request failure Greg Kroah-Hartman
` (250 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Joshua Hay, Aleksandr Loktionov,
Samuel Salin, Tony Nguyen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Joshua Hay <joshua.a.hay@intel.com>
[ Upstream commit bef152db47debcd14cbacefc5767f6f026c4bc89 ]
Set the TxQ ring count minimum to 128 descriptors. Any lower than this,
and the queue will stall and trigger Tx timeouts in flow based
scheduling mode. This is because next_to_clean might never be updated.
In flow based scheduling mode, next_to_clean is only updated after a
descriptor completion is processed, i.e. after the RE bit is set in the
last descriptor of a Tx packet. This will never happen with a ring size
of 64 and an IDPF_TX_SPLITQ_RE_MIN_GAP of 64. No matter what the value
of last_re is initialized/set to, the calculated gap will be at most 63
and never trigger the RE bit.
Even a ring size of 96 does not solve this. Because of how infrequent
next_to_clean is updated and how small the ring is, IDPF_DESC_UNUSED
will be much smaller on average. This increases the chance the queue
will be stopped because a multi-descriptor packet, e.g. a large LSO
packet, does not see enough resources on the ring. In this case, the
queue will trigger the stop logic. The queue permanently stalls because
there is no chance for a descriptor completion to update next_to_clean
since it is dependent on a packet being sent.
Fixes: 5f417d551324 ("idpf: replace flow scheduling buffer ring with buffer pool")
Signed-off-by: Joshua Hay <joshua.a.hay@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Samuel Salin <Samuel.salin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/intel/idpf/idpf_txrx.c | 5 +----
drivers/net/ethernet/intel/idpf/idpf_txrx.h | 2 +-
2 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
index 82a927265b9cf..afb922e8704d0 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
@@ -2507,10 +2507,7 @@ static netdev_tx_t idpf_tx_splitq_frame(struct sk_buff *skb,
tx_params.dtype = IDPF_TX_DESC_DTYPE_FLEX_FLOW_SCHE;
tx_params.eop_cmd = IDPF_TXD_FLEX_FLOW_CMD_EOP;
- /* Set the RE bit to periodically "clean" the descriptor ring.
- * MIN_GAP is set to MIN_RING size to ensure it will be set at
- * least once each time around the ring.
- */
+ /* Set the RE bit periodically to "clean" the descriptor ring */
if (idpf_tx_splitq_need_re(tx_q)) {
tx_params.eop_cmd |= IDPF_TXD_FLEX_FLOW_CMD_RE;
tx_q->txq_grp->num_completions_pending++;
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
index a34c791c46088..2d9960dd51ad5 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.h
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
@@ -19,7 +19,7 @@
/* Mailbox Queue */
#define IDPF_MAX_MBXQ 1
-#define IDPF_MIN_TXQ_DESC 64
+#define IDPF_MIN_TXQ_DESC 128
#define IDPF_MIN_RXQ_DESC 64
#define IDPF_MIN_TXQ_COMPLQ_DESC 256
#define IDPF_MAX_QIDS 256
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 095/337] idpf: Fix mailbox IRQ name leak on request failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (92 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 094/337] idpf: adjust TxQ ring count minimum Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 096/337] Bluetooth: ISO: clear iso_data always when detaching conn from hcon Greg Kroah-Hartman
` (249 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuho Choi, Aleksandr Loktionov,
Samuel Salin, Tony Nguyen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yuho Choi <dbgh9129@gmail.com>
[ Upstream commit 9bff30482c10f70d9e56c0633a6616e07140e217 ]
idpf_mb_intr_req_irq() allocates the mailbox IRQ name before calling
request_irq(). On success, the name is released later through
kfree(free_irq()), but request_irq() failure returns without freeing it.
Free the allocated name on the request_irq() failure path.
Fixes: 4930fbf419a7 ("idpf: add core init and interrupt request")
Signed-off-by: Yuho Choi <dbgh9129@gmail.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Samuel Salin <Samuel.salin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/intel/idpf/idpf_lib.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/idpf/idpf_lib.c b/drivers/net/ethernet/intel/idpf/idpf_lib.c
index 4973135c346a2..c2101f7f6e1bf 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_lib.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_lib.c
@@ -134,7 +134,7 @@ static int idpf_mb_intr_req_irq(struct idpf_adapter *adapter)
if (err) {
dev_err(&adapter->pdev->dev,
"IRQ request for mailbox failed, error: %d\n", err);
-
+ kfree(name);
return err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 096/337] Bluetooth: ISO: clear iso_data always when detaching conn from hcon
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (93 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 095/337] idpf: Fix mailbox IRQ name leak on request failure Greg Kroah-Hartman
@ 2026-08-07 14:34 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 097/337] Bluetooth: L2CAP: fix UAF in l2cap_le_connect_rsp Greg Kroah-Hartman
` (248 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:34 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit d57e506f6a1e3929611340fae87c1e4823f4d85c ]
When setting conn->hcon = NULL, also conn->hcon->iso_data = NULL is
necessary, otherwise later iso_conn_free() will UAF.
Fix clearing of iso_data in iso_sock_disconn()
Fixes KASAN: slab-use-after-free in iso_conn_hold_unless_zero on
iso_sock_release() followed by hci_abort_conn_sync().
Fixes: fbdc4bc47268 ("Bluetooth: ISO: Use defer setup to separate PA sync and BIG sync")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/iso.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index 12a01dc6dbde3..1d3e4616ee700 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -811,6 +811,7 @@ static void iso_sock_disconn(struct sock *sk)
sk->sk_state = BT_DISCONN;
iso_conn_lock(iso_pi(sk)->conn);
hci_conn_drop(iso_pi(sk)->conn->hcon);
+ iso_pi(sk)->conn->hcon->iso_data = NULL;
iso_pi(sk)->conn->hcon = NULL;
iso_conn_unlock(iso_pi(sk)->conn);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 097/337] Bluetooth: L2CAP: fix UAF in l2cap_le_connect_rsp
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (94 preceding siblings ...)
2026-08-07 14:34 ` [PATCH 6.12 096/337] Bluetooth: ISO: clear iso_data always when detaching conn from hcon Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 098/337] Bluetooth: ISO: fix timeout vs sync_timeout typo in check_bcast_qos Greg Kroah-Hartman
` (247 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jiale Yao, Luiz Augusto von Dentz,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiale Yao <yaojiale02@163.com>
[ Upstream commit c4740e7f23ff9a8210198d8b4703259e21b9f69d ]
l2cap_le_connect_rsp() obtains a channel via
__l2cap_get_chan_by_ident() but neither holds a reference nor uses
l2cap_chan_hold_unless_zero() before locking and operating on it.
A concurrent l2cap_chan_del() triggered by a remote disconnect can
free the channel between the lookup and l2cap_chan_lock(), causing
a use-after-free.
The BR/EDR counterpart l2cap_connect_rsp() and the sibling handler
l2cap_le_command_rej() already use l2cap_chan_hold_unless_zero()
to safely hold a reference, but l2cap_le_connect_rsp() was left
unprotected.
Fix by adding l2cap_chan_hold_unless_zero() after the ident lookup
and l2cap_chan_put() on the exit path, consistent with other L2CAP
response handlers.
Fixes: f1496dee9cbd ("Bluetooth: Add initial code for LE L2CAP Connect Request")
Assisted-by: Claude:deepseek-v4-pro
Signed-off-by: Jiale Yao <yaojiale02@163.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/l2cap_core.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 56337f164d306..c876f986b27f5 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4796,6 +4796,10 @@ static int l2cap_le_connect_rsp(struct l2cap_conn *conn,
if (!chan)
return -EBADSLT;
+ chan = l2cap_chan_hold_unless_zero(chan);
+ if (!chan)
+ return -EBADSLT;
+
err = 0;
l2cap_chan_lock(chan);
@@ -4841,6 +4845,7 @@ static int l2cap_le_connect_rsp(struct l2cap_conn *conn,
}
l2cap_chan_unlock(chan);
+ l2cap_chan_put(chan);
return err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 098/337] Bluetooth: ISO: fix timeout vs sync_timeout typo in check_bcast_qos
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (95 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 097/337] Bluetooth: L2CAP: fix UAF in l2cap_le_connect_rsp Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 099/337] Bluetooth: ISO: validate sockaddr_iso first in iso_sock_rebind_bis() Greg Kroah-Hartman
` (246 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit e9cb51813d79fc9aae4a2098aab3ab6ebd7fb6c8 ]
In iso.c check_bcast_qos(), missing bcast.timeout is not set to its
default value, and appears typoed as bcast.sync_timeout.
Fix the typo.
Fixes: b37cab587aa3 ("Bluetooth: ISO: Don't reject BT_ISO_QOS if parameters are unset")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/iso.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index 1d3e4616ee700..c54e42ab6947b 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -1636,7 +1636,7 @@ static bool check_bcast_qos(struct bt_iso_qos *qos)
return false;
if (!qos->bcast.timeout)
- qos->bcast.sync_timeout = BT_ISO_SYNC_TIMEOUT;
+ qos->bcast.timeout = BT_ISO_SYNC_TIMEOUT;
if (qos->bcast.timeout < 0x000a || qos->bcast.timeout > 0x4000)
return false;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 099/337] Bluetooth: ISO: validate sockaddr_iso first in iso_sock_rebind_bis()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (96 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 098/337] Bluetooth: ISO: fix timeout vs sync_timeout typo in check_bcast_qos Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 100/337] Bluetooth: ISO: fix leaking sk after socket release Greg Kroah-Hartman
` (245 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit 4e20192d46a685d73e590a60a4a2419a0a8afcbf ]
iso_sock_rebind_bis() updates socket iso_pi(sk)->bc_num_bis before
validating the BIS values, so it's possible to end up with bc_num_bis
inconsistent.
Assign to iso_pi(sk)->bc_num_bis only after validation.
Fixes: 80837140c1f2 ("Bluetooth: ISO: Allow binding a PA sync socket")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/iso.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index c54e42ab6947b..06c68e053b423 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -1014,15 +1014,15 @@ static int iso_sock_bind_pa_sk(struct sock *sk, struct sockaddr_iso *sa,
goto done;
}
- iso_pi(sk)->bc_num_bis = sa->iso_bc->bc_num_bis;
-
- for (int i = 0; i < iso_pi(sk)->bc_num_bis; i++)
+ for (int i = 0; i < sa->iso_bc->bc_num_bis; i++)
if (sa->iso_bc->bc_bis[i] < 0x01 ||
sa->iso_bc->bc_bis[i] > 0x1f) {
err = -EINVAL;
goto done;
}
+ iso_pi(sk)->bc_num_bis = sa->iso_bc->bc_num_bis;
+
memcpy(iso_pi(sk)->bc_bis, sa->iso_bc->bc_bis,
iso_pi(sk)->bc_num_bis);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 100/337] Bluetooth: ISO: fix leaking sk after socket release
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (97 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 099/337] Bluetooth: ISO: validate sockaddr_iso first in iso_sock_rebind_bis() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 101/337] Bluetooth: ISO: avoid deadlocks in iso_sock_timeout Greg Kroah-Hartman
` (244 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit ce57442a379212fe3fda59c9437ee8217eceb5b1 ]
iso_sock_kill() tests !sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket ||
sock_flag(sk, SOCK_DEAD) for early return, but this is always true since
sock_orphan(sk) sets SOCK_DEAD, so the sk reference released by socket
always leaks, iso_sock_destruct is never called.
The socket reference also leaks when __iso_sock_close() does not set
SOCK_ZAPPED, since iso_conn_del() does not call iso_sock_kill() after
zapping.
Fix by replacing SOCK_DEAD by BT_SK_KILLED flag that is not used for
something else, and lock_sock to ensure iso_sock_kill() puts sk only
after socket release only once. Release and iso_conn_del may run
concurrently. Call iso_sock_kill() from iso_conn_del() to clean sk up
after zapping.
Remove call to iso_sock_kill() from iso_sock_close(), as it's generally
no-op there.
Fixes: ccf74f2390d6 ("Bluetooth: Add BTPROTO_ISO socket type")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/iso.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index 06c68e053b423..a1c350defcb3a 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -55,6 +55,7 @@ static void iso_sock_kill(struct sock *sk);
enum {
BT_SK_BIG_SYNC,
BT_SK_PA_SYNC,
+ BT_SK_KILLED,
};
struct iso_pinfo {
@@ -286,6 +287,7 @@ static void iso_conn_del(struct hci_conn *hcon, int err)
iso_sock_clear_timer(sk);
iso_chan_del(sk, err);
release_sock(sk);
+ iso_sock_kill(sk);
sock_put(sk);
}
@@ -764,9 +766,13 @@ static void iso_sock_cleanup_listen(struct sock *parent)
*/
static void iso_sock_kill(struct sock *sk)
{
+ lock_sock(sk);
+
if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket ||
- sock_flag(sk, SOCK_DEAD))
+ test_bit(BT_SK_KILLED, &iso_pi(sk)->flags)) {
+ release_sock(sk);
return;
+ }
BT_DBG("sk %p state %d", sk, sk->sk_state);
@@ -780,6 +786,9 @@ static void iso_sock_kill(struct sock *sk)
/* Kill poor orphan */
bt_sock_unlink(&iso_sk_list, sk);
sock_set_flag(sk, SOCK_DEAD);
+ set_bit(BT_SK_KILLED, &iso_pi(sk)->flags);
+
+ release_sock(sk);
sock_put(sk);
}
@@ -859,7 +868,6 @@ static void iso_sock_close(struct sock *sk)
iso_sock_clear_timer(sk);
__iso_sock_close(sk);
release_sock(sk);
- iso_sock_kill(sk);
}
static void iso_sock_init(struct sock *sk, struct sock *parent)
@@ -1867,8 +1875,16 @@ static int iso_sock_release(struct socket *sock)
release_sock(sk);
}
+ /* Make sure sk is valid even if iso_conn_del() is concurrent */
+ sock_hold(sk);
+
+ lock_sock(sk);
sock_orphan(sk);
+ release_sock(sk);
+
iso_sock_kill(sk);
+
+ sock_put(sk);
return err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 101/337] Bluetooth: ISO: avoid deadlocks in iso_sock_timeout
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (98 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 100/337] Bluetooth: ISO: fix leaking sk after socket release Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 102/337] Bluetooth: btintel: Validate length before parsing diagnostics TLV Greg Kroah-Hartman
` (243 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit 200fa1629c57a3ca2b03d3ca63fd3a9bfd910c43 ]
iso_sock_timeout() takes lock_sock, so sync disabling the timer while
holding that lock may deadlock.
iso_sock_timeout() may also run concurrently with iso_conn_del(), which
leads to UAF
[Task 1] [Task hdev->workqueue]
iso_sock_timeout iso_conn_del
iso_conn_hold_unless_zero iso_chan_del
`------------> iso_conn_put
caller frees hcon
iso_conn_put
iso_conn_free
conn->hcon->iso_data = NULL; /* UAF */
Fix the deadlock by removing the disable from the lock_sock sections.
Move the timer from iso_conn to iso_pinfo to decouple it from iso_conn
which may need to be freed in lock_sock section. Convert some of the
clear_timer to disable_timer.
Fixes: dc26097bdb86 ("Bluetooth: ISO: Use kref to track lifetime of iso_conn")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/iso.c | 60 ++++++++++++++++++++++-----------------------
1 file changed, 29 insertions(+), 31 deletions(-)
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index a1c350defcb3a..5b53de4589471 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -30,8 +30,6 @@ struct iso_conn {
spinlock_t lock;
struct sock *sk;
- struct delayed_work timeout_work;
-
struct sk_buff *rx_skb;
__u32 rx_len;
__u16 tx_sn;
@@ -74,6 +72,7 @@ struct iso_pinfo {
__u8 base_len;
__u8 base[BASE_MAX_LENGTH];
struct iso_conn *conn;
+ struct delayed_work timeout_work;
};
static struct bt_iso_qos default_qos;
@@ -109,9 +108,6 @@ static void iso_conn_free(struct kref *ref)
hci_conn_drop(conn->hcon);
}
- /* Ensure no more work items will run since hci_conn has been dropped */
- disable_delayed_work_sync(&conn->timeout_work);
-
kfree_skb(conn->rx_skb);
kfree(conn);
@@ -152,48 +148,45 @@ static struct sock *iso_sock_hold(struct iso_conn *conn)
static void iso_sock_timeout(struct work_struct *work)
{
- struct iso_conn *conn = container_of(work, struct iso_conn,
- timeout_work.work);
- struct sock *sk;
-
- conn = iso_conn_hold_unless_zero(conn);
- if (!conn)
- return;
-
- iso_conn_lock(conn);
- sk = iso_sock_hold(conn);
- iso_conn_unlock(conn);
- iso_conn_put(conn);
-
- if (!sk)
- return;
+ struct iso_pinfo *pi = container_of(work, struct iso_pinfo,
+ timeout_work.work);
+ struct sock *sk = &pi->bt.sk;
BT_DBG("sock %p state %d", sk, sk->sk_state);
lock_sock(sk);
- sk->sk_err = ETIMEDOUT;
- sk->sk_state_change(sk);
+ if (!sock_flag(sk, SOCK_ZAPPED)) {
+ sk->sk_err = ETIMEDOUT;
+ sk->sk_state_change(sk);
+ }
release_sock(sk);
- sock_put(sk);
}
static void iso_sock_set_timer(struct sock *sk, long timeout)
{
+ lockdep_assert(lockdep_sock_is_held(sk));
+
+ cancel_delayed_work(&iso_pi(sk)->timeout_work);
+
if (!iso_pi(sk)->conn)
return;
BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout);
- cancel_delayed_work(&iso_pi(sk)->conn->timeout_work);
- schedule_delayed_work(&iso_pi(sk)->conn->timeout_work, timeout);
+ schedule_delayed_work(&iso_pi(sk)->timeout_work, timeout);
}
static void iso_sock_clear_timer(struct sock *sk)
{
- if (!iso_pi(sk)->conn)
- return;
+ BT_DBG("sock %p state %d", sk, sk->sk_state);
+ cancel_delayed_work(&iso_pi(sk)->timeout_work);
+}
+
+static void iso_sock_disable_timer(struct sock *sk)
+{
+ lockdep_assert(!lockdep_sock_is_held(sk));
BT_DBG("sock %p state %d", sk, sk->sk_state);
- cancel_delayed_work(&iso_pi(sk)->conn->timeout_work);
+ disable_delayed_work_sync(&iso_pi(sk)->timeout_work);
}
/* ---- ISO connections ---- */
@@ -218,7 +211,6 @@ static struct iso_conn *iso_conn_add(struct hci_conn *hcon)
kref_init(&conn->ref);
spin_lock_init(&conn->lock);
- INIT_DELAYED_WORK(&conn->timeout_work, iso_sock_timeout);
hcon->iso_data = conn;
conn->hcon = hcon;
@@ -283,8 +275,9 @@ static void iso_conn_del(struct hci_conn *hcon, int err)
return;
}
+ iso_sock_disable_timer(sk);
+
lock_sock(sk);
- iso_sock_clear_timer(sk);
iso_chan_del(sk, err);
release_sock(sk);
iso_sock_kill(sk);
@@ -766,6 +759,8 @@ static void iso_sock_cleanup_listen(struct sock *parent)
*/
static void iso_sock_kill(struct sock *sk)
{
+ iso_sock_disable_timer(sk);
+
lock_sock(sk);
if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket ||
@@ -864,8 +859,9 @@ static void __iso_sock_close(struct sock *sk)
/* Must be called on unlocked socket. */
static void iso_sock_close(struct sock *sk)
{
+ iso_sock_disable_timer(sk);
+
lock_sock(sk);
- iso_sock_clear_timer(sk);
__iso_sock_close(sk);
release_sock(sk);
}
@@ -934,6 +930,8 @@ static struct sock *iso_sock_alloc(struct net *net, struct socket *sock,
iso_pi(sk)->qos = default_qos;
iso_pi(sk)->sync_handle = -1;
+ INIT_DELAYED_WORK(&iso_pi(sk)->timeout_work, iso_sock_timeout);
+
bt_sock_link(&iso_sk_list, sk);
return sk;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 102/337] Bluetooth: btintel: Validate length before parsing diagnostics TLV
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (99 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 101/337] Bluetooth: ISO: avoid deadlocks in iso_sock_timeout Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 103/337] Bluetooth: hci_sync: make hci_cmd_sync_run_once return -EEXIST if exists Greg Kroah-Hartman
` (242 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zijun Hu, Luiz Augusto von Dentz,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zijun Hu <zijun.hu@oss.qualcomm.com>
[ Upstream commit b640ff9af3c809ff5ea2077fbba17df1594ec1e4 ]
btintel_diagnostics() accesses tlv->val[0] without first validating
that the diagnostics VSE is long enough to contain that field, so
may cause reading data beyond the received frame.
Fix by validating the length before access.
Fixes: af395330abed ("Bluetooth: btintel: Add Intel devcoredump support")
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/bluetooth/btintel.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index 6e3e4a817e727..cb948423a9bd8 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -3335,6 +3335,9 @@ int btintel_diagnostics(struct hci_dev *hdev, struct sk_buff *skb)
{
struct intel_tlv *tlv = (void *)&skb->data[5];
+ if (skb->len < 5 + sizeof(*tlv) + sizeof(tlv->val[0]))
+ goto recv_frame;
+
/* The first event is always an event type TLV */
if (tlv->type != INTEL_TLV_TYPE_ID)
goto recv_frame;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 103/337] Bluetooth: hci_sync: make hci_cmd_sync_run_once return -EEXIST if exists
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (100 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 102/337] Bluetooth: btintel: Validate length before parsing diagnostics TLV Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 104/337] Bluetooth: hci_conn: hold conn reference in abort_conn_sync() Greg Kroah-Hartman
` (241 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit d288f4db0909c22342eb50cd1632b4d850517281 ]
hci_cmd_sync_run_once() needs to indicate whether a queue item was
added, so caller can know if callbacks are called, so it can avoid
leaking resources.
Change the function to return -EEXIST if queue item already exists.
Modify all callsites vs. the changes. The only callsite is
hci_abort_conn().
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Stable-dep-of: 5761d003daa9 ("Bluetooth: hci_conn: hold conn reference in abort_conn_sync()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/hci_conn.c | 4 +++-
net/bluetooth/hci_sync.c | 2 +-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index ac98e3f2344e2..93c14e2d66c8a 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -2928,6 +2928,7 @@ static int abort_conn_sync(struct hci_dev *hdev, void *data)
int hci_abort_conn(struct hci_conn *conn, u8 reason)
{
struct hci_dev *hdev = conn->hdev;
+ int err;
/* If abort_reason has already been set it means the connection is
* already being aborted so don't attempt to overwrite it.
@@ -2949,5 +2950,6 @@ int hci_abort_conn(struct hci_conn *conn, u8 reason)
* as a result to MGMT_OP_DISCONNECT/MGMT_OP_UNPAIR which does
* already queue its callback on cmd_sync_work.
*/
- return hci_cmd_sync_run_once(hdev, abort_conn_sync, conn, NULL);
+ err = hci_cmd_sync_run_once(hdev, abort_conn_sync, conn, NULL);
+ return (err == -EEXIST) ? 0 : err;
}
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index d2e8543b5a51e..111b8f3c77296 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -825,7 +825,7 @@ int hci_cmd_sync_run_once(struct hci_dev *hdev, hci_cmd_sync_work_func_t func,
void *data, hci_cmd_sync_work_destroy_t destroy)
{
if (hci_cmd_sync_lookup_entry(hdev, func, data, destroy))
- return 0;
+ return -EEXIST;
return hci_cmd_sync_run(hdev, func, data, destroy);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 104/337] Bluetooth: hci_conn: hold conn reference in abort_conn_sync()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (101 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 103/337] Bluetooth: hci_sync: make hci_cmd_sync_run_once return -EEXIST if exists Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 105/337] Bluetooth: hci_sync: fix hci_conn_del() use in hci_le_create_conn_sync Greg Kroah-Hartman
` (240 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit 5761d003daa987ac81463f570713ce9c9dd204e5 ]
There is theoretical UAF if the conn is freed while the hci_sync task is
running.
Hold refcount to avoid that.
Fixes: 227a0cdf4a02 ("Bluetooth: MGMT: Fix not generating command complete for MGMT_OP_DISCONNECT")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/hci_conn.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 93c14e2d66c8a..c5b006d9d974a 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -2925,6 +2925,13 @@ static int abort_conn_sync(struct hci_dev *hdev, void *data)
return hci_abort_conn_sync(hdev, conn, conn->abort_reason);
}
+static void abort_conn_destroy(struct hci_dev *hdev, void *data, int err)
+{
+ struct hci_conn *conn = data;
+
+ hci_conn_put(conn);
+}
+
int hci_abort_conn(struct hci_conn *conn, u8 reason)
{
struct hci_dev *hdev = conn->hdev;
@@ -2950,6 +2957,9 @@ int hci_abort_conn(struct hci_conn *conn, u8 reason)
* as a result to MGMT_OP_DISCONNECT/MGMT_OP_UNPAIR which does
* already queue its callback on cmd_sync_work.
*/
- err = hci_cmd_sync_run_once(hdev, abort_conn_sync, conn, NULL);
+ err = hci_cmd_sync_run_once(hdev, abort_conn_sync, hci_conn_get(conn),
+ abort_conn_destroy);
+ if (err)
+ hci_conn_put(conn);
return (err == -EEXIST) ? 0 : err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 105/337] Bluetooth: hci_sync: fix hci_conn_del() use in hci_le_create_conn_sync
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (102 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 104/337] Bluetooth: hci_conn: hold conn reference in abort_conn_sync() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 106/337] Bluetooth: hci_sync: remove unnecessary hci_conn_get in create_conn_sync Greg Kroah-Hartman
` (239 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit 2c1e4e00613dfd105f978be2276e5e265801ec9f ]
hci_conn_del() caller must hold hdev->lock, check the conn was not
concurrently deleted, and usually inform socket the conn is going to be
deleted.
Use hci_abort_conn_sync() instead of calling hci_conn_del() without
locks etc.
Fixes: 8e8b92ee60de5 ("Bluetooth: hci_sync: Add hci_le_create_conn_sync")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/hci_sync.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 111b8f3c77296..8c48d459a5415 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -6593,7 +6593,9 @@ static int hci_le_create_conn_sync(struct hci_dev *hdev, void *data)
if (hci_dev_test_flag(hdev, HCI_LE_SCAN) &&
hdev->le_scan_type == LE_SCAN_ACTIVE &&
!hci_dev_test_flag(hdev, HCI_LE_SIMULTANEOUS_ROLES)) {
- hci_conn_del(conn);
+ conn->state = BT_OPEN;
+ hci_abort_conn_sync(hdev, conn,
+ HCI_ERROR_REJ_LIMITED_RESOURCES);
hci_conn_put(conn);
return -EBUSY;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 106/337] Bluetooth: hci_sync: remove unnecessary hci_conn_get in create_conn_sync
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (103 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 105/337] Bluetooth: hci_sync: fix hci_conn_del() use in hci_le_create_conn_sync Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-08 17:08 ` Harshit Mogalapalli
2026-08-07 14:35 ` [PATCH 6.12 107/337] net: phylink: put link_gpio if phylink_create fails Greg Kroah-Hartman
` (238 subsequent siblings)
343 siblings, 1 reply; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
[ Upstream commit c0a9dcd2be398eee505d4b254ec3a845aa8ab189 ]
hci_conn_get() without already held reference is data race against
concurrent deletion.
In previous patches, the refcount has been changed to be taken before
starting the hci_sync task, so remove these extra get() + put() as they
are not needed.
Fixes: 12917f591cea ("Bluetooth: hci_conn: Fix null ptr deref in hci_abort_conn()")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/hci_sync.c | 13 -------------
1 file changed, 13 deletions(-)
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 8c48d459a5415..03bbf4c1d6e5a 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -6577,11 +6577,6 @@ static int hci_le_create_conn_sync(struct hci_dev *hdev, void *data)
bt_dev_dbg(hdev, "conn %p", conn);
- /* Hold a reference so conn stays valid for the HCI_CONN_CREATE
- * clear_bit() at done.
- */
- hci_conn_get(conn);
-
clear_bit(HCI_CONN_SCANNING, &conn->flags);
conn->state = BT_CONNECT;
@@ -6596,7 +6591,6 @@ static int hci_le_create_conn_sync(struct hci_dev *hdev, void *data)
conn->state = BT_OPEN;
hci_abort_conn_sync(hdev, conn,
HCI_ERROR_REJ_LIMITED_RESOURCES);
- hci_conn_put(conn);
return -EBUSY;
}
@@ -6690,7 +6684,6 @@ static int hci_le_create_conn_sync(struct hci_dev *hdev, void *data)
/* Re-enable advertising after the connection attempt is finished. */
hci_resume_advertising_sync(hdev);
- hci_conn_put(conn);
return err;
}
@@ -6965,11 +6958,6 @@ static int hci_acl_create_conn_sync(struct hci_dev *hdev, void *data)
else
cp.role_switch = 0x00;
- /* Hold a reference so conn stays valid for the HCI_CONN_CREATE
- * clear_bit() below.
- */
- hci_conn_get(conn);
-
/* Mark create connection in flight so hci_cancel_connect_sync() can
* cancel it while blocking on the connection complete event.
*/
@@ -6981,7 +6969,6 @@ static int hci_acl_create_conn_sync(struct hci_dev *hdev, void *data)
conn->conn_timeout, NULL);
clear_bit(HCI_CONN_CREATE, &conn->flags);
- hci_conn_put(conn);
return err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 107/337] net: phylink: put link_gpio if phylink_create fails
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (104 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 106/337] Bluetooth: hci_sync: remove unnecessary hci_conn_get in create_conn_sync Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 108/337] scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE Greg Kroah-Hartman
` (237 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian Marangi, Andrew Lunn,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Marangi <ansuelsmth@gmail.com>
[ Upstream commit 0fe1e3e8f3380d7862296a73b528d164e96c76b8 ]
In phylink_create() if phylink_register_sfp() returns an error, link_gpio
obtained by phylink_parse_fixedlink() is never released. While this is a
very unlikely scenario, it's worth to fix/handle this.
This was present from the very first implementation of phylink but got
relevant only with the introduction of ce0aa27ff3f6 ("sfp: add sfp-bus to
bridge between network devices and sfp cages") where additional function
were added after phylink_parse_fixedlink() making the release of link_gpio
needed if such additional function errored out.
While at it, restructure the exit condition of phylink_create() with the
goto pattern to reduce code duplication on handling error conditions.
Fixes: ce0aa27ff3f6 ("sfp: add sfp-bus to bridge between network devices and sfp cages")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260726150806.2437-1-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/phy/phylink.c | 29 +++++++++++++++--------------
1 file changed, 15 insertions(+), 14 deletions(-)
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index b78dfcbec936c..e6f3963739ad6 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1728,8 +1728,8 @@ struct phylink *phylink_create(struct phylink_config *config,
} else if (config->type == PHYLINK_DEV) {
pl->dev = config->dev;
} else {
- kfree(pl);
- return ERR_PTR(-EINVAL);
+ ret = -EINVAL;
+ goto free_pl;
}
pl->using_mac_select_pcs = using_mac_select_pcs;
@@ -1753,28 +1753,29 @@ struct phylink *phylink_create(struct phylink_config *config,
phylink_validate(pl, pl->supported, &pl->link_config);
ret = phylink_parse_mode(pl, fwnode);
- if (ret < 0) {
- kfree(pl);
- return ERR_PTR(ret);
- }
+ if (ret < 0)
+ goto free_pl;
if (pl->cfg_link_an_mode == MLO_AN_FIXED) {
ret = phylink_parse_fixedlink(pl, fwnode);
- if (ret < 0) {
- kfree(pl);
- return ERR_PTR(ret);
- }
+ if (ret < 0)
+ goto release_link_gpio;
}
pl->cur_link_an_mode = pl->cfg_link_an_mode;
ret = phylink_register_sfp(pl, fwnode);
- if (ret < 0) {
- kfree(pl);
- return ERR_PTR(ret);
- }
+ if (ret < 0)
+ goto release_link_gpio;
return pl;
+
+release_link_gpio:
+ if (pl->link_gpio)
+ gpiod_put(pl->link_gpio);
+free_pl:
+ kfree(pl);
+ return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(phylink_create);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 108/337] scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (105 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 107/337] net: phylink: put link_gpio if phylink_create fails Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 109/337] scsi: ufs: core: Cancel RTC work in active-active suspend Greg Kroah-Hartman
` (236 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, TanZheng, Mike Christie,
Martin K. Petersen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: TanZheng <tanzheng@kylinos.cn>
[ Upstream commit 9c33222bd387312874fbe36ca8002e5c945b9653 ]
In the iblock_execute_pr_out() function, PRO_PREEMPT,
PRO_PREEMPT_AND_ABORT, and PRO_RELEASE all perform callback capability
checks through ops->pr_clear. The error check allows unimplemented hooks
to pass through the gate, resulting dereferencing a NULL function
pointer.
Check whether the hooks that need to be called are supported.
Fixes: 394f81184882 ("scsi: target: Add block PR support to iblock")
Signed-off-by: TanZheng <tanzheng@kylinos.cn>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Link: https://patch.msgid.link/20260724075850.280699-1-kensanya@163.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/target/target_core_iblock.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index c8dc92a7d63e6..0a232abee8f58 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -891,7 +891,7 @@ static sense_reason_t iblock_execute_pr_out(struct se_cmd *cmd, u8 sa, u64 key,
break;
case PRO_PREEMPT:
case PRO_PREEMPT_AND_ABORT:
- if (!ops->pr_clear) {
+ if (!ops->pr_preempt) {
pr_err("block_device does not support pr_preempt.\n");
return TCM_UNSUPPORTED_SCSI_OPCODE;
}
@@ -901,8 +901,8 @@ static sense_reason_t iblock_execute_pr_out(struct se_cmd *cmd, u8 sa, u64 key,
sa == PRO_PREEMPT_AND_ABORT);
break;
case PRO_RELEASE:
- if (!ops->pr_clear) {
- pr_err("block_device does not support pr_pclear.\n");
+ if (!ops->pr_release) {
+ pr_err("block_device does not support pr_release.\n");
return TCM_UNSUPPORTED_SCSI_OPCODE;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 109/337] scsi: ufs: core: Cancel RTC work in active-active suspend
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (106 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 108/337] scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 110/337] scsi: zfcp: Fix memory leak during adapter release by destroying gid_pn_req Greg Kroah-Hartman
` (235 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Peter Wang, Bean Huo,
Bart Van Assche, Martin K. Petersen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
[ Upstream commit f71b4a30983b846b4075bf544e835121e70e6a43 ]
UFS RTC support schedules ufs_rtc_update_work to periodically update the
device RTC. The work can issue query commands and access the UFS host
controller.
A previous change moved the RTC work cancellation before the PRE_CHANGE
vendor suspend callback to close a race in the common suspend path.
However, the active-active path jumps directly to vops_suspend after
flushing exception handling work and therefore bypasses the
cancellation.
If the RTC work runs while the vendor suspend callback is gating or
otherwise changing hardware state, it can access the controller during
suspend and trigger an SError.
Cancel the RTC work before entering the vendor suspend callback in the
active-active path. Since this path now cancels the work, move the RTC
work scheduling outside the device and link state restoration block in
the resume path. This restarts RTC updates after an active-active
suspend and resume cycle.
Fixes: b0bd84c39289 ("scsi: ufs: core: Fix SError in ufshcd_rtc_work() during UFS suspend")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260714172726.1736967-1-lgs201920130244@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ufs/core/ufshcd.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 205427f6c4651..98bf5bc6f383e 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -9761,6 +9761,7 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
req_link_state == UIC_LINK_ACTIVE_STATE) {
ufshcd_disable_auto_bkops(hba);
flush_work(&hba->eeh_work);
+ cancel_delayed_work_sync(&hba->ufs_rtc_update_work);
goto vops_suspend;
}
@@ -9970,10 +9971,11 @@ static int __ufshcd_wl_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
if (ret)
goto set_old_link_state;
ufshcd_set_timestamp_attr(hba);
- schedule_delayed_work(&hba->ufs_rtc_update_work,
- msecs_to_jiffies(UFS_RTC_UPDATE_INTERVAL_MS));
}
+ schedule_delayed_work(&hba->ufs_rtc_update_work,
+ msecs_to_jiffies(UFS_RTC_UPDATE_INTERVAL_MS));
+
if (ufshcd_keep_autobkops_enabled_except_suspend(hba))
ufshcd_enable_auto_bkops(hba);
else
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 110/337] scsi: zfcp: Fix memory leak during adapter release by destroying gid_pn_req
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (107 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 109/337] scsi: ufs: core: Cancel RTC work in active-active suspend Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 111/337] scsi: target: Clear cmd_cnt when initial counter enrollment fails Greg Kroah-Hartman
` (234 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Benjamin Block, M Nikhil,
Chinmaya Kajagar, Nihar Panda, Martin K. Petersen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Block <bblock@linux.ibm.com>
[ Upstream commit b601fa590e667bd9643feed8c869b6b3e418480d ]
When releasing an adapter we don't free the mempool 'gid_pn_req' that is
allocated during the enqueue. This leaks memory:
unreferenced object 0xd8d29297de700 (size 256):
comm "(udev-worker)", pid 2105, jiffies 4294945794
hex dump (first 32 bytes):
00 00 00 00 de ad 4e ad ff ff ff ff 00 00 00 00 ......N.........
ff ff ff ff ff ff ff ff 00 0d c4 5f 67 9d 99 e0 ..........._g...
backtrace (crc 4a5b5da2):
[<000dc45f64da418c>] kmemleak_alloc+0x6c/0xa0
[<000dc45f62b430aa>] __kmalloc_cache_node_noprof+0x36a/0x4d0
[<000dc45f629a535a>] mempool_create_node_noprof+0xaa/0x150
[<000dc45ee2c065e6>] zfcp_allocate_low_mem_buffers+0x96/0x370 [zfcp]
[<000dc45ee2c070f8>] zfcp_adapter_enqueue+0x598/0xd40 [zfcp]
[<000dc45ee2c08eb0>] zfcp_ccw_set_online+0x160/0x210 [zfcp]
[<000dc45f643d4762>] ccw_device_set_online+0x232/0xd80
[<000dc45f643d53d4>] online_store_recog_and_online+0x124/0x390
[<000dc45f643d8238>] online_store+0x298/0x5b0
[<000dc45f62eb0a04>] kernfs_fop_write_iter+0x2c4/0x480
[<000dc45f62c81150>] new_sync_write+0x370/0x4b0
[<000dc45f62c87abe>] vfs_write+0x43e/0x5b0
[<000dc45f62c87ff4>] ksys_write+0x114/0x1f0
[<000dc45f621c4a16>] do_syscall+0x2f6/0x430
[<000dc45f64d9d5d8>] __do_syscall+0xc8/0x1c0
[<000dc45f64dc2224>] system_call+0x74/0xa0
Fix this by destroying the mempool during the adapter's release.
Fixes: 799b76d09aee ("[SCSI] zfcp: Decouple gid_pn requests from erp")
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Tested-by: M Nikhil <nikh1092@linux.ibm.com>
Acked-by: M Nikhil <nikh1092@linux.ibm.com>
Reviewed-by: Chinmaya Kajagar <chinmayk@linux.ibm.com>
Reviewed-by: Nihar Panda <niharp@linux.ibm.com>
Link: https://patch.msgid.link/20260720072736.3381816-2-niharp@linux.ibm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/s390/scsi/zfcp_aux.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index ab2f35bc294da..d3cc884ccd599 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -254,6 +254,7 @@ static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)
static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
{
mempool_destroy(adapter->pool.erp_req);
+ mempool_destroy(adapter->pool.gid_pn_req);
mempool_destroy(adapter->pool.scsi_req);
mempool_destroy(adapter->pool.scsi_abort);
mempool_destroy(adapter->pool.qtcb_pool);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 111/337] scsi: target: Clear cmd_cnt when initial counter enrollment fails
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (108 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 110/337] scsi: zfcp: Fix memory leak during adapter release by destroying gid_pn_req Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 112/337] net: sxgbe: free TX rings on RX allocation failure Greg Kroah-Hartman
` (233 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Leon Romanovsky, Mike Christie,
Martin K. Petersen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Leon Romanovsky <leonro@nvidia.com>
[ Upstream commit a8ddfd2425bbbafadae8700d63ed8a61a4109878 ]
When target_get_sess_cmd() fails during session shutdown because
percpu_ref_tryget_live() returns false, the command keeps the
se_cmd->cmd_cnt pointer that __target_init_cmd() assigned earlier
without owning a reference. Final release through
target_release_cmd_kref() then issues an unmatched percpu_ref_put().
Commit 8e288be8606a ("scsi: target: Pass in cmd counter to use during
cmd setup") moved the cmd_cnt assignment ahead of the reference
acquisition. Clear se_cmd->cmd_cnt whenever the initial
target_get_sess_cmd() fails in target_init_cmd() and
target_submit_tmr(), so release performs exactly one matching put per
acquired reference.
Fixes: 8e288be8606a ("scsi: target: Pass in cmd counter to use during cmd setup")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Link: https://patch.msgid.link/20260722-reference-count-underflow-in-target-v1-1-63ab664f12fd@nvidia.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/target/target_core_transport.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index cf9834f958c9c..3dc49f6c7832e 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1691,6 +1691,7 @@ int target_init_cmd(struct se_cmd *se_cmd, struct se_session *se_sess,
u32 data_length, int task_attr, int data_dir, int flags)
{
struct se_portal_group *se_tpg;
+ int ret;
se_tpg = se_sess->se_tpg;
BUG_ON(!se_tpg);
@@ -1720,7 +1721,11 @@ int target_init_cmd(struct se_cmd *se_cmd, struct se_session *se_sess,
* necessary for fabrics using TARGET_SCF_ACK_KREF that expect a second
* kref_put() to happen during fabric packet acknowledgement.
*/
- return target_get_sess_cmd(se_cmd, flags & TARGET_SCF_ACK_KREF);
+ ret = target_get_sess_cmd(se_cmd, flags & TARGET_SCF_ACK_KREF);
+ if (ret)
+ se_cmd->cmd_cnt = NULL;
+
+ return ret;
}
EXPORT_SYMBOL_GPL(target_init_cmd);
@@ -1996,8 +2001,10 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
* allocation failure.
*/
ret = core_tmr_alloc_req(se_cmd, fabric_tmr_ptr, tm_type, gfp);
- if (ret < 0)
+ if (ret < 0) {
+ se_cmd->cmd_cnt = NULL;
return -ENOMEM;
+ }
if (tm_type == TMR_ABORT_TASK)
se_cmd->se_tmr_req->ref_task_tag = tag;
@@ -2005,6 +2012,7 @@ int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
/* See target_submit_cmd for commentary */
ret = target_get_sess_cmd(se_cmd, flags & TARGET_SCF_ACK_KREF);
if (ret) {
+ se_cmd->cmd_cnt = NULL;
core_tmr_release_req(se_cmd->se_tmr_req);
return ret;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 112/337] net: sxgbe: free TX rings on RX allocation failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (109 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 111/337] scsi: target: Clear cmd_cnt when initial counter enrollment fails Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 113/337] net: sxgbe: check descriptor ring allocation failures Greg Kroah-Hartman
` (232 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chenguang Zhao, Vadim Fedorenko,
David S. Miller, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chenguang Zhao <zhaochenguang@kylinos.cn>
[ Upstream commit c870f7e2890b9f78ac84515a9809cc5c183c975e ]
When RX descriptor ring allocation fails, init_dma_desc_rings() only
frees the partially allocated RX rings and returns. The TX rings that
were allocated earlier in the same function are leaked.
Rearrange error labels to clean up TX rings upon RX failures.
Fixes: 1edb9ca69e8a ("net: sxgbe: add basic framework for Samsung 10Gb ethernet driver")
Signed-off-by: Chenguang Zhao <zhaochenguang@kylinos.cn>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
index d2ba283f6123f..a4f457fa570d9 100644
--- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
@@ -598,14 +598,13 @@ static int init_dma_desc_rings(struct net_device *netd)
return 0;
-txalloc_err:
- while (queue_num--)
- free_tx_ring(priv->device, priv->txq[queue_num], tx_rsize);
- return ret;
-
rxalloc_err:
while (queue_num--)
free_rx_ring(priv->device, priv->rxq[queue_num], rx_rsize);
+ queue_num = SXGBE_TX_QUEUES;
+txalloc_err:
+ while (queue_num--)
+ free_tx_ring(priv->device, priv->txq[queue_num], tx_rsize);
return ret;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 113/337] net: sxgbe: check descriptor ring allocation failures
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (110 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 112/337] net: sxgbe: free TX rings on RX allocation failure Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 114/337] can: isotp: check register_netdevice_notifier() error in module init Greg Kroah-Hartman
` (231 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chenguang Zhao, Vadim Fedorenko,
David S. Miller, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chenguang Zhao <zhaochenguang@kylinos.cn>
[ Upstream commit 51b093a7ba27476e1f639455f005e8d2e75390e4 ]
sxgbe_open() ignores the return value of init_dma_desc_rings() and
continues to program DMA with invalid ring addresses when allocation
fails. Check the return value and disconnect the PHY on failure.
Fixes: 1edb9ca69e8a ("net: sxgbe: add basic framework for Samsung 10Gb ethernet driver")
Signed-off-by: Chenguang Zhao <zhaochenguang@kylinos.cn>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
index a4f457fa570d9..4afa2b2c67b47 100644
--- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
@@ -1079,7 +1079,9 @@ static int sxgbe_open(struct net_device *dev)
priv->dma_buf_sz = SXGBE_ALIGN(DMA_BUFFER_SIZE);
priv->tx_tc = TC_DEFAULT;
priv->rx_tc = TC_DEFAULT;
- init_dma_desc_rings(dev);
+ ret = init_dma_desc_rings(dev);
+ if (ret)
+ goto init_phy_error;
/* DMA initialization and SW reset */
ret = sxgbe_init_dma_engine(priv);
@@ -1188,6 +1190,7 @@ static int sxgbe_open(struct net_device *dev)
init_error:
free_dma_desc_resources(priv);
+init_phy_error:
if (dev->phydev)
phy_disconnect(dev->phydev);
phy_error:
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 114/337] can: isotp: check register_netdevice_notifier() error in module init
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (111 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 113/337] net: sxgbe: check descriptor ring allocation failures Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 115/337] tracing/mmiotrace: Reset dropped_count in mmio_reset_data() Greg Kroah-Hartman
` (230 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Minhong He, Marc Kleine-Budde,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Minhong He <heminhong@kylinos.cn>
[ Upstream commit ef09a13c5afac41a3c4b5f22b8572820d9e7518c ]
Register the netdevice notifier before can_proto_register() and check the
return value. If protocol registration fails, unregister the notifier
before returning the error.
Align isotp_module_init() with the reordering already done for raw.c
(commit c28b3bffe49e ("can: raw: process optimization in raw_init()")) and
bcm.c (commit edd1a7e42f1d ("can: bcm: registration process optimization
in bcm_module_init()")).
Fixes: 8d0caedb7596 ("can: bcm/raw/isotp: use per module netdevice notifier")
Signed-off-by: Minhong He <heminhong@kylinos.cn>
Link: https://patch.msgid.link/20260729085656.134523-1-heminhong@kylinos.cn
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/can/isotp.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/net/can/isotp.c b/net/can/isotp.c
index b2622c881aa32..7e3d6afbb24f9 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -1885,13 +1885,18 @@ static __init int isotp_module_init(void)
pr_info("can: isotp protocol (max_pdu_size %d)\n", max_pdu_size);
+ err = register_netdevice_notifier(&canisotp_notifier);
+ if (err)
+ return err;
+
err = can_proto_register(&isotp_can_proto);
- if (err < 0)
+ if (err < 0) {
pr_err("can: registration of isotp protocol failed %pe\n", ERR_PTR(err));
- else
- register_netdevice_notifier(&canisotp_notifier);
+ unregister_netdevice_notifier(&canisotp_notifier);
+ return err;
+ }
- return err;
+ return 0;
}
static __exit void isotp_module_exit(void)
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 115/337] tracing/mmiotrace: Reset dropped_count in mmio_reset_data()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (112 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 114/337] can: isotp: check register_netdevice_notifier() error in module init Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 116/337] tracing: Remove TRACE_EVENT_FL_FILTERED logic Greg Kroah-Hartman
` (229 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google),
Steven Rostedt, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
[ Upstream commit c786d2bdf1f3964deee192ad942dee2a741c1e2c ]
mmio_reset_data() is called during tracer initialization, reset, and
start. While it resets overrun_detected and prev_overruns, it neglects
to reset dropped_count. Consequently, dropped event counts from prior
tracing sessions persist in dropped_count and corrupt overrun reports
in subsequent runs.
Fix this by explicitly calling atomic_set(&dropped_count, 0) in
mmio_reset_data().
Link: https://patch.msgid.link/178524299122.56416.16277704230639425172.stgit@devnote2
Fixes: 173ed24ee2d6 ("mmiotrace: count events lost due to not recording")
Assisted-by: Antigravity:gemini-3.6-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/trace/trace_mmiotrace.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index 4d9e5c830dbe1..c523ce5aa4958 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -29,6 +29,7 @@ static void mmio_reset_data(struct trace_array *tr)
{
overrun_detected = false;
prev_overruns = 0;
+ atomic_set(&dropped_count, 0);
tracing_reset_online_cpus(&tr->array_buffer);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 116/337] tracing: Remove TRACE_EVENT_FL_FILTERED logic
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (113 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 115/337] tracing/mmiotrace: Reset dropped_count in mmio_reset_data() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 117/337] tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions Greg Kroah-Hartman
` (228 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zheng Yejian,
Steven Rostedt (Google), Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zheng Yejian <zhengyejian@huaweicloud.com>
[ Upstream commit 49e4154f4b16345da5e219b23ed9737a6e735bc1 ]
After commit dcb0b5575d24 ("tracing: Remove TRACE_EVENT_FL_USE_CALL_FILTER
logic"), no one's going to set the TRACE_EVENT_FL_FILTERED or change the
call->filter, so remove related logic.
Link: https://lore.kernel.org/20240911010026.2302849-1-zhengyejian@huaweicloud.com
Signed-off-by: Zheng Yejian <zhengyejian@huaweicloud.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Stable-dep-of: 12b80cdbc54c ("tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/trace_events.h | 4 ---
kernel/trace/trace.c | 44 ++++++----------------------
kernel/trace/trace.h | 4 ---
kernel/trace/trace_branch.c | 4 +--
kernel/trace/trace_events.c | 2 --
kernel/trace/trace_functions_graph.c | 8 ++---
kernel/trace/trace_hwlat.c | 4 +--
kernel/trace/trace_mmiotrace.c | 8 ++---
kernel/trace/trace_osnoise.c | 12 ++------
kernel/trace/trace_sched_wakeup.c | 8 ++---
10 files changed, 20 insertions(+), 78 deletions(-)
diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index 54ba231ded519..98ee10b417e67 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -327,7 +327,6 @@ void *trace_event_buffer_reserve(struct trace_event_buffer *fbuffer,
void trace_event_buffer_commit(struct trace_event_buffer *fbuffer);
enum {
- TRACE_EVENT_FL_FILTERED_BIT,
TRACE_EVENT_FL_CAP_ANY_BIT,
TRACE_EVENT_FL_NO_SET_FILTER_BIT,
TRACE_EVENT_FL_IGNORE_ENABLE_BIT,
@@ -343,7 +342,6 @@ enum {
/*
* Event flags:
- * FILTERED - The event has a filter attached
* CAP_ANY - Any user can enable for perf
* NO_SET_FILTER - Set when filter has error and is to be ignored
* IGNORE_ENABLE - For trace internal events, do not enable with debugfs file
@@ -359,7 +357,6 @@ enum {
* TEST_STR - The event has a "%s" that points to a string outside the event
*/
enum {
- TRACE_EVENT_FL_FILTERED = (1 << TRACE_EVENT_FL_FILTERED_BIT),
TRACE_EVENT_FL_CAP_ANY = (1 << TRACE_EVENT_FL_CAP_ANY_BIT),
TRACE_EVENT_FL_NO_SET_FILTER = (1 << TRACE_EVENT_FL_NO_SET_FILTER_BIT),
TRACE_EVENT_FL_IGNORE_ENABLE = (1 << TRACE_EVENT_FL_IGNORE_ENABLE_BIT),
@@ -385,7 +382,6 @@ struct trace_event_call {
};
struct trace_event event;
char *print_fmt;
- struct event_filter *filter;
/*
* Static events can disappear with modules,
* where as dynamic ones need their own ref count.
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 9e5aa468d7e48..fcbeda360df3e 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -591,19 +591,6 @@ int tracing_check_open_get_tr(struct trace_array *tr)
return 0;
}
-int call_filter_check_discard(struct trace_event_call *call, void *rec,
- struct trace_buffer *buffer,
- struct ring_buffer_event *event)
-{
- if (unlikely(call->flags & TRACE_EVENT_FL_FILTERED) &&
- !filter_match_preds(call->filter, rec)) {
- __trace_event_discard_commit(buffer, event);
- return 1;
- }
-
- return 0;
-}
-
/**
* trace_find_filtered_pid - check if a pid exists in a filtered_pid list
* @filtered_pids: The list of pids to check
@@ -2894,7 +2881,6 @@ void
trace_function(struct trace_array *tr, unsigned long ip, unsigned long
parent_ip, unsigned int trace_ctx)
{
- struct trace_event_call *call = &event_function;
struct trace_buffer *buffer = tr->array_buffer.buffer;
struct ring_buffer_event *event;
struct ftrace_entry *entry;
@@ -2907,11 +2893,9 @@ trace_function(struct trace_array *tr, unsigned long ip, unsigned long
entry->ip = ip;
entry->parent_ip = parent_ip;
- if (!call_filter_check_discard(call, entry, buffer, event)) {
- if (static_branch_unlikely(&trace_function_exports_enabled))
- ftrace_exports(event, TRACE_EXPORT_FUNCTION);
- __buffer_unlock_commit(buffer, event);
- }
+ if (static_branch_unlikely(&trace_function_exports_enabled))
+ ftrace_exports(event, TRACE_EXPORT_FUNCTION);
+ __buffer_unlock_commit(buffer, event);
}
#ifdef CONFIG_STACKTRACE
@@ -2938,7 +2922,6 @@ static void __ftrace_trace_stack(struct trace_array *tr,
unsigned int trace_ctx,
int skip, struct pt_regs *regs)
{
- struct trace_event_call *call = &event_kernel_stack;
struct ring_buffer_event *event;
unsigned int size, nr_entries;
struct ftrace_stack *fstack;
@@ -3011,8 +2994,7 @@ static void __ftrace_trace_stack(struct trace_array *tr,
memcpy(&entry->caller, fstack->calls,
flex_array_size(entry, caller, nr_entries));
- if (!call_filter_check_discard(call, entry, buffer, event))
- __buffer_unlock_commit(buffer, event);
+ __buffer_unlock_commit(buffer, event);
out:
/* Again, don't let gcc optimize things here */
@@ -3086,7 +3068,6 @@ static void
ftrace_trace_userstack(struct trace_array *tr,
struct trace_buffer *buffer, unsigned int trace_ctx)
{
- struct trace_event_call *call = &event_user_stack;
struct ring_buffer_event *event;
struct userstack_entry *entry;
@@ -3120,8 +3101,7 @@ ftrace_trace_userstack(struct trace_array *tr,
memset(&entry->caller, 0, sizeof(entry->caller));
stack_trace_save_user(entry->caller, FTRACE_STACK_ENTRIES);
- if (!call_filter_check_discard(call, entry, buffer, event))
- __buffer_unlock_commit(buffer, event);
+ __buffer_unlock_commit(buffer, event);
out_drop_count:
__this_cpu_dec(user_stack_count);
@@ -3290,7 +3270,6 @@ static void trace_printk_start_stop_comm(int enabled)
*/
int trace_vbprintk(unsigned long ip, const char *fmt, va_list args)
{
- struct trace_event_call *call = &event_bprint;
struct ring_buffer_event *event;
struct trace_buffer *buffer;
struct trace_array *tr = READ_ONCE(printk_trace);
@@ -3334,10 +3313,8 @@ int trace_vbprintk(unsigned long ip, const char *fmt, va_list args)
entry->fmt = fmt;
memcpy(entry->buf, tbuffer, sizeof(u32) * len);
- if (!call_filter_check_discard(call, entry, buffer, event)) {
- __buffer_unlock_commit(buffer, event);
- ftrace_trace_stack(tr, buffer, trace_ctx, 6, NULL);
- }
+ __buffer_unlock_commit(buffer, event);
+ ftrace_trace_stack(tr, buffer, trace_ctx, 6, NULL);
out:
ring_buffer_nest_end(buffer);
@@ -3356,7 +3333,6 @@ static __printf(3, 0)
int __trace_array_vprintk(struct trace_buffer *buffer,
unsigned long ip, const char *fmt, va_list args)
{
- struct trace_event_call *call = &event_print;
struct ring_buffer_event *event;
int len = 0, size;
struct print_entry *entry;
@@ -3391,10 +3367,8 @@ int __trace_array_vprintk(struct trace_buffer *buffer,
entry->ip = ip;
memcpy(&entry->buf, tbuffer, len + 1);
- if (!call_filter_check_discard(call, entry, buffer, event)) {
- __buffer_unlock_commit(buffer, event);
- ftrace_trace_stack(printk_trace, buffer, trace_ctx, 6, NULL);
- }
+ __buffer_unlock_commit(buffer, event);
+ ftrace_trace_stack(printk_trace, buffer, trace_ctx, 6, NULL);
out:
ring_buffer_nest_end(buffer);
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index ed4fcc438a0bf..baa39009a25d1 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -1440,10 +1440,6 @@ struct trace_subsystem_dir {
int nr_events;
};
-extern int call_filter_check_discard(struct trace_event_call *call, void *rec,
- struct trace_buffer *buffer,
- struct ring_buffer_event *event);
-
void trace_buffer_unlock_commit_regs(struct trace_array *tr,
struct trace_buffer *buffer,
struct ring_buffer_event *event,
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c
index 30f72e0ecb5d4..138f69521eb4a 100644
--- a/kernel/trace/trace_branch.c
+++ b/kernel/trace/trace_branch.c
@@ -30,7 +30,6 @@ static struct trace_array *branch_tracer;
static void
probe_likely_condition(struct ftrace_likely_data *f, int val, int expect)
{
- struct trace_event_call *call = &event_branch;
struct trace_array *tr = branch_tracer;
struct trace_buffer *buffer;
struct trace_array_cpu *data;
@@ -82,8 +81,7 @@ probe_likely_condition(struct ftrace_likely_data *f, int val, int expect)
entry->line = f->data.line;
entry->correct = val == expect;
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit_nostack(buffer, event);
+ trace_buffer_unlock_commit_nostack(buffer, event);
out:
current->trace_recursion &= ~TRACE_BRANCH_BIT;
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index d07b8062ded30..14feebea4f000 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -3319,8 +3319,6 @@ static void __trace_remove_event_call(struct trace_event_call *call)
{
event_remove(call);
trace_destroy_fields(call);
- free_event_filter(call->filter);
- call->filter = NULL;
}
static int probe_remove_event_call(struct trace_event_call *call)
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 47ea114ca9f46..04d403a38f04f 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -102,7 +102,6 @@ int __trace_graph_entry(struct trace_array *tr,
struct ftrace_graph_ent *trace,
unsigned int trace_ctx)
{
- struct trace_event_call *call = &event_funcgraph_entry;
struct ring_buffer_event *event;
struct trace_buffer *buffer = tr->array_buffer.buffer;
struct ftrace_graph_ent_entry *entry;
@@ -113,8 +112,7 @@ int __trace_graph_entry(struct trace_array *tr,
return 0;
entry = ring_buffer_event_data(event);
entry->graph_ent = *trace;
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit_nostack(buffer, event);
+ trace_buffer_unlock_commit_nostack(buffer, event);
return 1;
}
@@ -223,7 +221,6 @@ void __trace_graph_return(struct trace_array *tr,
struct ftrace_graph_ret *trace,
unsigned int trace_ctx)
{
- struct trace_event_call *call = &event_funcgraph_exit;
struct ring_buffer_event *event;
struct trace_buffer *buffer = tr->array_buffer.buffer;
struct ftrace_graph_ret_entry *entry;
@@ -234,8 +231,7 @@ void __trace_graph_return(struct trace_array *tr,
return;
entry = ring_buffer_event_data(event);
entry->ret = *trace;
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit_nostack(buffer, event);
+ trace_buffer_unlock_commit_nostack(buffer, event);
}
void trace_graph_return(struct ftrace_graph_ret *trace,
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c
index bc437b6ce8969..8703eb86a20c8 100644
--- a/kernel/trace/trace_hwlat.c
+++ b/kernel/trace/trace_hwlat.c
@@ -130,7 +130,6 @@ static bool hwlat_busy;
static void trace_hwlat_sample(struct hwlat_sample *sample)
{
struct trace_array *tr = hwlat_trace;
- struct trace_event_call *call = &event_hwlat;
struct trace_buffer *buffer = tr->array_buffer.buffer;
struct ring_buffer_event *event;
struct hwlat_entry *entry;
@@ -148,8 +147,7 @@ static void trace_hwlat_sample(struct hwlat_sample *sample)
entry->nmi_count = sample->nmi_count;
entry->count = sample->count;
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit_nostack(buffer, event);
+ trace_buffer_unlock_commit_nostack(buffer, event);
}
/* Macros to encapsulate the time capturing infrastructure */
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index c523ce5aa4958..6b964471265e1 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -295,7 +295,6 @@ static void __trace_mmiotrace_rw(struct trace_array *tr,
struct trace_array_cpu *data,
struct mmiotrace_rw *rw)
{
- struct trace_event_call *call = &event_mmiotrace_rw;
struct trace_buffer *buffer = tr->array_buffer.buffer;
struct ring_buffer_event *event;
struct trace_mmiotrace_rw *entry;
@@ -311,8 +310,7 @@ static void __trace_mmiotrace_rw(struct trace_array *tr,
entry = ring_buffer_event_data(event);
entry->rw = *rw;
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit(tr, buffer, event, trace_ctx);
+ trace_buffer_unlock_commit(tr, buffer, event, trace_ctx);
}
void mmio_trace_rw(struct mmiotrace_rw *rw)
@@ -326,7 +324,6 @@ static void __trace_mmiotrace_map(struct trace_array *tr,
struct trace_array_cpu *data,
struct mmiotrace_map *map)
{
- struct trace_event_call *call = &event_mmiotrace_map;
struct trace_buffer *buffer = tr->array_buffer.buffer;
struct ring_buffer_event *event;
struct trace_mmiotrace_map *entry;
@@ -342,8 +339,7 @@ static void __trace_mmiotrace_map(struct trace_array *tr,
entry = ring_buffer_event_data(event);
entry->map = *map;
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit(tr, buffer, event, trace_ctx);
+ trace_buffer_unlock_commit(tr, buffer, event, trace_ctx);
}
void mmio_trace_mapping(struct mmiotrace_map *map)
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index 4daedf8debdc5..549ac1916dc39 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -501,7 +501,6 @@ static void print_osnoise_headers(struct seq_file *s)
static void
__trace_osnoise_sample(struct osnoise_sample *sample, struct trace_buffer *buffer)
{
- struct trace_event_call *call = &event_osnoise;
struct ring_buffer_event *event;
struct osnoise_entry *entry;
@@ -519,8 +518,7 @@ __trace_osnoise_sample(struct osnoise_sample *sample, struct trace_buffer *buffe
entry->softirq_count = sample->softirq_count;
entry->thread_count = sample->thread_count;
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit_nostack(buffer, event);
+ trace_buffer_unlock_commit_nostack(buffer, event);
}
/*
@@ -580,7 +578,6 @@ static void print_timerlat_headers(struct seq_file *s)
static void
__trace_timerlat_sample(struct timerlat_sample *sample, struct trace_buffer *buffer)
{
- struct trace_event_call *call = &event_osnoise;
struct ring_buffer_event *event;
struct timerlat_entry *entry;
@@ -593,8 +590,7 @@ __trace_timerlat_sample(struct timerlat_sample *sample, struct trace_buffer *buf
entry->context = sample->context;
entry->timer_latency = sample->timer_latency;
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit_nostack(buffer, event);
+ trace_buffer_unlock_commit_nostack(buffer, event);
}
/*
@@ -656,7 +652,6 @@ static void timerlat_save_stack(int skip)
static void
__timerlat_dump_stack(struct trace_buffer *buffer, struct trace_stack *fstack, unsigned int size)
{
- struct trace_event_call *call = &event_osnoise;
struct ring_buffer_event *event;
struct stack_entry *entry;
@@ -670,8 +665,7 @@ __timerlat_dump_stack(struct trace_buffer *buffer, struct trace_stack *fstack, u
entry->size = fstack->nr_entries;
memcpy(&entry->caller, fstack->calls, size);
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit_nostack(buffer, event);
+ trace_buffer_unlock_commit_nostack(buffer, event);
}
/*
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 039382576bc16..59e30d897a9da 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -376,7 +376,6 @@ tracing_sched_switch_trace(struct trace_array *tr,
struct task_struct *next,
unsigned int trace_ctx)
{
- struct trace_event_call *call = &event_context_switch;
struct trace_buffer *buffer = tr->array_buffer.buffer;
struct ring_buffer_event *event;
struct ctx_switch_entry *entry;
@@ -394,8 +393,7 @@ tracing_sched_switch_trace(struct trace_array *tr,
entry->next_state = task_state_index(next);
entry->next_cpu = task_cpu(next);
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit(tr, buffer, event, trace_ctx);
+ trace_buffer_unlock_commit(tr, buffer, event, trace_ctx);
}
static void
@@ -404,7 +402,6 @@ tracing_sched_wakeup_trace(struct trace_array *tr,
struct task_struct *curr,
unsigned int trace_ctx)
{
- struct trace_event_call *call = &event_wakeup;
struct ring_buffer_event *event;
struct ctx_switch_entry *entry;
struct trace_buffer *buffer = tr->array_buffer.buffer;
@@ -422,8 +419,7 @@ tracing_sched_wakeup_trace(struct trace_array *tr,
entry->next_state = task_state_index(wakee);
entry->next_cpu = task_cpu(wakee);
- if (!call_filter_check_discard(call, entry, buffer, event))
- trace_buffer_unlock_commit(tr, buffer, event, trace_ctx);
+ trace_buffer_unlock_commit(tr, buffer, event, trace_ctx);
}
static void notrace
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 117/337] tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (114 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 116/337] tracing: Remove TRACE_EVENT_FL_FILTERED logic Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-08 17:23 ` Harshit Mogalapalli
2026-08-07 14:35 ` [PATCH 6.12 118/337] accel/qaic: use sizeof(*trans_hdr) for transaction length check Greg Kroah-Hartman
` (227 subsequent siblings)
343 siblings, 1 reply; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google),
Steven Rostedt, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
[ Upstream commit 12b80cdbc54cf615b4717a4e8180063408091ea2 ]
mmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into
tr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map().
If these functions are invoked while mmio_trace_array is NULL (e.g. before
initialization or after disabled), accessing tr->array_buffer.buffer will
result in a NULL pointer dereference crash.
Fix this by adding an explicit NULL check for tr at the beginning of
__trace_mmiotrace_rw() and __trace_mmiotrace_map().
Link: https://patch.msgid.link/178524300062.56416.8362487250709962380.stgit@devnote2
Fixes: f984b51e0779 ("ftrace: add mmiotrace plugin")
Assisted-by: Antigravity:gemini-3.6-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/trace/trace_mmiotrace.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index 6b964471265e1..251ed7051e409 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -295,11 +295,15 @@ static void __trace_mmiotrace_rw(struct trace_array *tr,
struct trace_array_cpu *data,
struct mmiotrace_rw *rw)
{
- struct trace_buffer *buffer = tr->array_buffer.buffer;
+ struct trace_buffer *buffer;
struct ring_buffer_event *event;
struct trace_mmiotrace_rw *entry;
unsigned int trace_ctx;
+ if (!tr)
+ return;
+
+ buffer = tr->array_buffer.buffer;
trace_ctx = tracing_gen_ctx_flags(0);
event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_RW,
sizeof(*entry), trace_ctx);
@@ -324,11 +328,15 @@ static void __trace_mmiotrace_map(struct trace_array *tr,
struct trace_array_cpu *data,
struct mmiotrace_map *map)
{
- struct trace_buffer *buffer = tr->array_buffer.buffer;
+ struct trace_buffer *buffer;
struct ring_buffer_event *event;
struct trace_mmiotrace_map *entry;
unsigned int trace_ctx;
+ if (!tr)
+ return;
+
+ buffer = tr->array_buffer.buffer;
trace_ctx = tracing_gen_ctx_flags(0);
event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_MAP,
sizeof(*entry), trace_ctx);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 118/337] accel/qaic: use sizeof(*trans_hdr) for transaction length check
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (115 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 117/337] tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 119/337] riscv: mm: Fix out-of-bounds page-table walk during memory hot-remove Greg Kroah-Hartman
` (226 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Muhammad Bilal, Jeff Hugo,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Muhammad Bilal <meatuni001@gmail.com>
[ Upstream commit d6c075f797a672a6e3bd2fd44aee713801698ec2 ]
In encode_message() the per-transaction lower-bound check compares
trans_hdr->len against sizeof(trans_hdr), i.e. the size of the pointer,
instead of sizeof(*trans_hdr), the size of struct qaic_manage_trans_hdr.
Every other length check in this file (encode_message() at the loop
guard, decode_message(), etc.) correctly uses sizeof(*trans_hdr), so
this is an inconsistency. On 64-bit builds the pointer and the struct
are both 8 bytes, so the check is correct by coincidence and there is
no behavioural change. On 32-bit builds the pointer is 4 bytes, which
weakens the minimum-length check below the 8-byte header size.
Use sizeof(*trans_hdr) so the check validates against the actual
transaction header size on all builds.
Fixes: ea33cb6fc278 ("accel/qaic: tighten bounds checking in encode_message()")
Signed-off-by: Muhammad Bilal <meatuni001@gmail.com>
Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Link: https://patch.msgid.link/20260617212520.59801-1-meatuni001@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/accel/qaic/qaic_control.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/accel/qaic/qaic_control.c b/drivers/accel/qaic/qaic_control.c
index 8eae30fe14f98..8759b53ba38eb 100644
--- a/drivers/accel/qaic/qaic_control.c
+++ b/drivers/accel/qaic/qaic_control.c
@@ -782,7 +782,7 @@ static int encode_message(struct qaic_device *qdev, struct manage_msg *user_msg,
break;
}
trans_hdr = (struct qaic_manage_trans_hdr *)(user_msg->data + user_len);
- if (trans_hdr->len < sizeof(trans_hdr) ||
+ if (trans_hdr->len < sizeof(*trans_hdr) ||
size_add(user_len, trans_hdr->len) > user_msg->len) {
ret = -EINVAL;
break;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 119/337] riscv: mm: Fix out-of-bounds page-table walk during memory hot-remove
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (116 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 118/337] accel/qaic: use sizeof(*trans_hdr) for transaction length check Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 120/337] net: dsa: mt7530: check bus->read() errors in the MDIO regmap backend Greg Kroah-Hartman
` (225 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Karl Mehltretter, Paul Walmsley,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Karl Mehltretter <kmehltretter@gmail.com>
[ Upstream commit a0188cc133696627857d16054e43f9ebc7efc821 ]
remove_pud_mapping() and remove_p4d_mapping() obtain a child table base
with pud_offset(p4dp, 0) and p4d_offset(pgd, 0), then add the index for
addr.
RISC-V folds page-table levels at runtime. When a level is folded, its
offset helper returns the parent entry itself, but the index can still be
nonzero. Adding it walks past the parent table. Sv48 folds P4D, while Sv39
folds both P4D and PUD, so memory hot-remove can descend into unrelated
memory and pass an invalid page to __free_pages(). This can trigger:
kernel BUG at include/linux/mm.h:1810!
VM_BUG_ON_PAGE(page_ref_count(page) == 0)
arch_remove_memory+0x1e/0x5c
try_remove_memory+0x15e/0x200
remove_memory+0x24/0x3c
Only add the index when the corresponding page-table level is enabled,
matching p4d_offset() and pud_offset().
Fixes: c75a74f4ba19 ("riscv: mm: Add memory hotplugging support")
Assisted-by: Claude:claude-fable-5
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Link: https://patch.msgid.link/20260729012132.24882-1-kmehltretter@gmail.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/riscv/mm/init.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 4594f77a06ee3..e52f7dabb370c 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -1726,7 +1726,7 @@ static void __meminit remove_pud_mapping(pud_t *pud_base, unsigned long addr, un
for (; addr < end; addr = next) {
next = pud_addr_end(addr, end);
- pudp = pud_base + pud_index(addr);
+ pudp = pgtable_l4_enabled ? pud_base + pud_index(addr) : pud_base;
pud = pudp_get(pudp);
if (!pud_present(pud))
continue;
@@ -1757,7 +1757,7 @@ static void __meminit remove_p4d_mapping(p4d_t *p4d_base, unsigned long addr, un
for (; addr < end; addr = next) {
next = p4d_addr_end(addr, end);
- p4dp = p4d_base + p4d_index(addr);
+ p4dp = pgtable_l5_enabled ? p4d_base + p4d_index(addr) : p4d_base;
p4d = p4dp_get(p4dp);
if (!p4d_present(p4d))
continue;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 120/337] net: dsa: mt7530: check bus->read() errors in the MDIO regmap backend
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (117 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 119/337] riscv: mm: Fix out-of-bounds page-table walk during memory hot-remove Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 121/337] net: dsa: mt7530: error out on failed reads in MT7531 PHY polling Greg Kroah-Hartman
` (224 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Daniel Golle, Andrew Lunn,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Golle <daniel@makrotopia.org>
[ Upstream commit b4ce102b2cd88424c5860fbbb20b9eb343a93bf4 ]
bus->read() returns a negative errno on failure, but
mt7530_regmap_read() assigns it to a u16, truncating e.g. -ETIMEDOUT
into 0xff92, and returns success. The garbage word is then consumed as
register data, and read-modify-write cycles write it back to the
switch. Check both reads and propagate their errors.
The same defect existed in mt7530_mii_read() since the driver was
introduced and moved into the regmap backend unchanged.
Fixes: b8f126a8d543 ("net-next: dsa: add dsa support for Mediatek MT7530 switch")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/3c628e48276c2e5522c8795a6be60d11c7a76a7d.1785213071.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/dsa/mt7530-mdio.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/dsa/mt7530-mdio.c b/drivers/net/dsa/mt7530-mdio.c
index 51df42ccdbe62..e19b46449ffe6 100644
--- a/drivers/net/dsa/mt7530-mdio.c
+++ b/drivers/net/dsa/mt7530-mdio.c
@@ -55,8 +55,15 @@ mt7530_regmap_read(void *context, unsigned int reg, unsigned int *val)
if (ret < 0)
return ret;
- lo = bus->read(bus, priv->mdiodev->addr, r);
- hi = bus->read(bus, priv->mdiodev->addr, 0x10);
+ ret = bus->read(bus, priv->mdiodev->addr, r);
+ if (ret < 0)
+ return ret;
+ lo = ret;
+
+ ret = bus->read(bus, priv->mdiodev->addr, 0x10);
+ if (ret < 0)
+ return ret;
+ hi = ret;
*val = (hi << 16) | (lo & 0xffff);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 121/337] net: dsa: mt7530: error out on failed reads in MT7531 PHY polling
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (118 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 120/337] net: dsa: mt7530: check bus->read() errors in the MDIO regmap backend Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 122/337] net: libwx: fix FDIR ATR queue mismatch for software VLAN packets Greg Kroah-Hartman
` (223 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Daniel Golle, Andrew Lunn,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Golle <daniel@makrotopia.org>
[ Upstream commit 77a9ebe8818cf6dd1699bd6728cb5d66307801d7 ]
The MT7531 indirect PHY access functions poll MT7531_PHY_IAC through
a helper which returns 0 when the underlying read fails, so a failed
bus transaction clears MT7531_PHY_ACS_ST and the access carries on,
returning garbage PHY register data to phylib.
Poll using regmap_read_poll_timeout(), which stops on read errors and
propagates them. These functions hold the MDIO bus lock across the
whole sequence, so the unlocked regmap accesses remain correct. Remove
the now-unused _mt7530_unlocked_read().
Fixes: c288575f7810 ("net: dsa: mt7530: Add the support of MT7531 switch")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/79e85d68d210cc37342978171aa6432aa2954333.1785213071.git.daniel@makrotopia.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/dsa/mt7530.c | 58 ++++++++++++++--------------------------
1 file changed, 20 insertions(+), 38 deletions(-)
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 21437ce57b64f..b13e905833c3f 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -219,12 +219,6 @@ mt7530_write(struct mt7530_priv *priv, u32 reg, u32 val)
mt7530_mutex_unlock(priv);
}
-static u32
-_mt7530_unlocked_read(struct mt7530_dummy_poll *p)
-{
- return mt7530_mii_read(p->priv, p->reg);
-}
-
static u32
_mt7530_read(struct mt7530_dummy_poll *p)
{
@@ -577,16 +571,13 @@ static int
mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
int regnum)
{
- struct mt7530_dummy_poll p;
u32 reg, val;
int ret;
- INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
-
mt7530_mutex_lock(priv);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
- !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
@@ -596,8 +587,8 @@ mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
MT7531_MDIO_DEV_ADDR(devad) | regnum;
mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
- !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
@@ -607,8 +598,8 @@ mt7531_ind_c45_phy_read(struct mt7530_priv *priv, int port, int devad,
MT7531_MDIO_DEV_ADDR(devad);
mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
- !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
@@ -625,16 +616,13 @@ static int
mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
int regnum, u16 data)
{
- struct mt7530_dummy_poll p;
u32 val, reg;
int ret;
- INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
-
mt7530_mutex_lock(priv);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
- !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
@@ -644,8 +632,8 @@ mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
MT7531_MDIO_DEV_ADDR(devad) | regnum;
mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
- !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
@@ -655,8 +643,8 @@ mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
MT7531_MDIO_DEV_ADDR(devad) | data;
mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
- !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
@@ -671,16 +659,13 @@ mt7531_ind_c45_phy_write(struct mt7530_priv *priv, int port, int devad,
static int
mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum)
{
- struct mt7530_dummy_poll p;
int ret;
u32 val;
- INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
-
mt7530_mutex_lock(priv);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
- !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
@@ -691,8 +676,8 @@ mt7531_ind_c22_phy_read(struct mt7530_priv *priv, int port, int regnum)
mt7530_mii_write(priv, MT7531_PHY_IAC, val | MT7531_PHY_ACS_ST);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, val,
- !(val & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, val,
+ !(val & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
@@ -709,16 +694,13 @@ static int
mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
u16 data)
{
- struct mt7530_dummy_poll p;
int ret;
u32 reg;
- INIT_MT7530_DUMMY_POLL(&p, priv, MT7531_PHY_IAC);
-
mt7530_mutex_lock(priv);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
- !(reg & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, reg,
+ !(reg & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
@@ -729,8 +711,8 @@ mt7531_ind_c22_phy_write(struct mt7530_priv *priv, int port, int regnum,
mt7530_mii_write(priv, MT7531_PHY_IAC, reg | MT7531_PHY_ACS_ST);
- ret = readx_poll_timeout(_mt7530_unlocked_read, &p, reg,
- !(reg & MT7531_PHY_ACS_ST), 20, 100000);
+ ret = regmap_read_poll_timeout(priv->regmap, MT7531_PHY_IAC, reg,
+ !(reg & MT7531_PHY_ACS_ST), 20, 100000);
if (ret < 0) {
dev_err(priv->dev, "poll timeout\n");
goto out;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 122/337] net: libwx: fix FDIR ATR queue mismatch for software VLAN packets
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (119 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 121/337] net: dsa: mt7530: error out on failed reads in MT7531 PHY polling Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 123/337] octeontx2-pf: Set correct sequence for carrier off and tx queue stop Greg Kroah-Hartman
` (222 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jiawen Wu, Simon Horman, Paolo Abeni,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiawen Wu <jiawenwu@trustnetic.com>
[ Upstream commit 732ed8f75ce583d115716f668dc80d730f3ad610 ]
When TX VLAN hardware offload is disabled, VLAN tags are embedded in
the packet payload (software VLAN). Previously, the driver failed to
set the WX_TX_FLAGS_SW_VLAN flag for these packets during transmission.
This missing flag caused the txgbe FDIR ATR logic to fall through to the
default hash calculation path. This resulted in asymmetric hash values
for Tx and Rx flows, preventing return packets from being steered to the
same queue as the transmit packets.
Fix this by detecting software VLANs via eth_type_vlan(skb->protocol)
and setting WX_TX_FLAGS_SW_VLAN. This ensures the ATR feature selects
the correct hashing algorithm to maintain Tx/Rx queue symmetry.
Fixes: b501d261a5b3 ("net: txgbe: add FDIR ATR support")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/0879DA38A8E32701+20260724074657.10773-1-jiawenwu@trustnetic.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/wangxun/libwx/wx_lib.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index 4c203f4afd689..3666302e3401b 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -1481,6 +1481,8 @@ static netdev_tx_t wx_xmit_frame_ring(struct sk_buff *skb,
if (skb_vlan_tag_present(skb)) {
tx_flags |= skb_vlan_tag_get(skb) << WX_TX_FLAGS_VLAN_SHIFT;
tx_flags |= WX_TX_FLAGS_HW_VLAN;
+ } else if (eth_type_vlan(skb->protocol)) {
+ tx_flags |= WX_TX_FLAGS_SW_VLAN;
}
/* record initial flags and protocol */
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 123/337] octeontx2-pf: Set correct sequence for carrier off and tx queue stop
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (120 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 122/337] net: libwx: fix FDIR ATR queue mismatch for software VLAN packets Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 124/337] sched/deadline: Use revised wakeup rule only for running dl_server Greg Kroah-Hartman
` (221 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Suman Ghosh, Ratheesh Kannoth,
Simon Horman, Paolo Abeni, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Suman Ghosh <sumang@marvell.com>
[ Upstream commit 16809472409d998afcda402e32b8229b389337c4 ]
During link down event, we were doing netif_tx_stop_all_queues() first
and then netif_carrier_off(). This can cause a potential race since
carrier is still on during down event. This patch reverse the calling
order to fix the issue.
Fixes: 50fe6c02e5ad ("octeontx2-pf: Register and handle link notifications")
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260724072831.2415281-1-rkannoth@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index c314139e0d781..d03399585d01d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -838,8 +838,8 @@ static void otx2_handle_link_event(struct otx2_nic *pf)
netif_carrier_on(netdev);
netif_tx_start_all_queues(netdev);
} else {
- netif_tx_stop_all_queues(netdev);
netif_carrier_off(netdev);
+ netif_tx_stop_all_queues(netdev);
}
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 124/337] sched/deadline: Use revised wakeup rule only for running dl_server
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (121 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 123/337] octeontx2-pf: Set correct sequence for carrier off and tx queue stop Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 125/337] qede: sync udp_tunnel ports outside qede_lock in the recovery path Greg Kroah-Hartman
` (220 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Gabriele Monaco,
Peter Zijlstra (Intel), Juri Lelli, Andrea Righi, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gabriele Monaco <gmonaco@redhat.com>
[ Upstream commit 1842bf97af109f5ebf830175c9725bf81ebb78b1 ]
Commit 14a857056466 ("sched/deadline: Use revised wakeup rule for
dl_server") applies the revised wakeup rule to any server, as a result
servers that are not running (dl_defer_running == 0) and start with a
deadline overflow get enqueued and can boost tasks as if they were
running, invalidating the defer rule and the documented state model.
Apply the revised wakeup rule only for deferrable servers that are
marked as running.
Fixes: 14a857056466 ("sched/deadline: Use revised wakeup rule for dl_server")
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Juri Lelli <juri.lelli@redhat.com>
Tested-by: Andrea Righi <arighi@nvidia.com>
Link: https://patch.msgid.link/20260522125833.264145-1-gmonaco@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/sched/deadline.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index cb8eff0ebd228..f5c64d1a019d5 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1079,7 +1079,8 @@ static void update_dl_entity(struct sched_dl_entity *dl_se)
if (dl_time_before(dl_se->deadline, rq_clock(rq)) ||
dl_entity_overflow(dl_se, rq_clock(rq))) {
- if (unlikely((!dl_is_implicit(dl_se) || dl_se->dl_defer) &&
+ if (unlikely((!dl_is_implicit(dl_se) ||
+ (dl_se->dl_defer && dl_se->dl_defer_running)) &&
!dl_time_before(dl_se->deadline, rq_clock(rq)) &&
!is_dl_boosted(dl_se))) {
update_dl_revised_wakeup(dl_se, rq);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 125/337] qede: sync udp_tunnel ports outside qede_lock in the recovery path
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (122 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 124/337] sched/deadline: Use revised wakeup rule only for running dl_server Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 126/337] ksmbd: return success for deferred final close Greg Kroah-Hartman
` (219 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Denis V. Lunev, Andrew Lunn,
David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
Jacob Keller, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Denis V. Lunev <den@openvz.org>
[ Upstream commit 451c9075d6c53f2438d110addbeeeea6fac18567 ]
A TX timeout on a qede NIC that has VXLAN/GENEVE tunnel ports
configured wedges the rtnetlink control plane of the whole machine:
NETDEV WATCHDOG: ens6f1 (qede): transmit queue 2 timed out 10226 ms
[qede_tx_timeout:586(ens6f1)]TX timeout on queue 2!
[qede_recovery_handler:2665(ens6f0)]Starting a recovery process
The recovery path deadlocks on the driver's own mutex:
qede_sp_task
rtnl_lock()
mutex_lock(&edev->qede_lock) <- taken
qede_recovery_handler
qede_load
udp_tunnel_nic_reset_ntf
__udp_tunnel_nic_device_sync
info->sync_table == qede_udp_tunnel_sync
mutex_lock(&edev->qede_lock) <- same task: deadlock
The mutex is not recursive, so the kworker blocks on itself with
rtnl_lock held, and neither lock is ever released. Every task that
calls rtnl_lock() afterwards (ip, ovs-vswitchd, lldpad, IPv6
addrconf, sshd) blocks forever while the node still answers ping.
In a vmcore from an affected production node rtnl_mutex.owner
decodes to the very kworker blocked at the innermost mutex_lock()
above.
Re-sync the tunnel ports from qede_sp_task() after the internal lock
is dropped, still under rtnl_lock as the udp_tunnel API requires.
This mirrors qede_open(), which calls udp_tunnel_nic_reset_ntf()
under rtnl without the internal lock.
qede_recovery_handler() now returns whether it has successfully
reloaded an open device, and the caller re-syncs the ports only in
that case. This keeps the old gating exactly: a device that was down
or a failed recovery returns false, as those paths never reached the
udp_tunnel_nic_reset_ntf() call before either.
This was the only user of the qede_lock()/qede_unlock() helpers, so
remove them.
Fixes: 8cd160a29415 ("qede: convert to new udp_tunnel_nic infra")
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Andrew Lunn <andrew+netdev@lunn.ch>
CC: "David S. Miller" <davem@davemloft.net>
CC: Eric Dumazet <edumazet@google.com>
CC: Jakub Kicinski <kuba@kernel.org>
CC: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260726104311.1782900-1-den@openvz.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/qlogic/qede/qede_main.c | 44 ++++++++++----------
1 file changed, 22 insertions(+), 22 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index b5d744d2586f7..59a80f7193723 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -107,7 +107,7 @@ static void qede_remove(struct pci_dev *pdev);
static void qede_shutdown(struct pci_dev *pdev);
static void qede_link_update(void *dev, struct qed_link_output *link);
static void qede_schedule_recovery_handler(void *dev);
-static void qede_recovery_handler(struct qede_dev *edev);
+static bool qede_recovery_handler(struct qede_dev *edev);
static void qede_schedule_hw_err_handler(void *dev,
enum qed_hw_err_type err_type);
static void qede_get_eth_tlv_data(void *edev, void *data);
@@ -1065,21 +1065,6 @@ void __qede_unlock(struct qede_dev *edev)
mutex_unlock(&edev->qede_lock);
}
-/* This version of the lock should be used when acquiring the RTNL lock is also
- * needed in addition to the internal qede lock.
- */
-static void qede_lock(struct qede_dev *edev)
-{
- rtnl_lock();
- __qede_lock(edev);
-}
-
-static void qede_unlock(struct qede_dev *edev)
-{
- __qede_unlock(edev);
- rtnl_unlock();
-}
-
static void qede_periodic_task(struct work_struct *work)
{
struct qede_dev *edev = container_of(work, struct qede_dev,
@@ -1116,6 +1101,8 @@ static void qede_sp_task(struct work_struct *work)
*/
if (test_and_clear_bit(QEDE_SP_RECOVERY, &edev->sp_flags)) {
+ bool reloaded;
+
cancel_delayed_work_sync(&edev->periodic_task);
#ifdef CONFIG_QED_SRIOV
/* SRIOV must be disabled outside the lock to avoid a deadlock.
@@ -1124,9 +1111,17 @@ static void qede_sp_task(struct work_struct *work)
if (pci_num_vf(edev->pdev))
qede_sriov_configure(edev->pdev, 0);
#endif
- qede_lock(edev);
- qede_recovery_handler(edev);
- qede_unlock(edev);
+ rtnl_lock();
+ __qede_lock(edev);
+ reloaded = qede_recovery_handler(edev);
+ __qede_unlock(edev);
+
+ /* The udp_tunnel core synchronously calls back into
+ * qede_udp_tunnel_sync(), which takes the qede lock.
+ */
+ if (reloaded)
+ udp_tunnel_nic_reset_ntf(edev->ndev);
+ rtnl_unlock();
}
__qede_lock(edev);
@@ -2667,9 +2662,13 @@ static void qede_recovery_failed(struct qede_dev *edev)
edev->ops->common->set_power_state(edev->cdev, PCI_D3hot);
}
-static void qede_recovery_handler(struct qede_dev *edev)
+/* Returns true if an open device was successfully reloaded and its
+ * udp_tunnel ports need to be re-synced by the caller.
+ */
+static bool qede_recovery_handler(struct qede_dev *edev)
{
u32 curr_state = edev->state;
+ bool reloaded = false;
int rc;
DP_NOTICE(edev, "Starting a recovery process\n");
@@ -2699,17 +2698,18 @@ static void qede_recovery_handler(struct qede_dev *edev)
goto err;
qede_config_rx_mode(edev->ndev);
- udp_tunnel_nic_reset_ntf(edev->ndev);
+ reloaded = true;
}
edev->state = curr_state;
DP_NOTICE(edev, "Recovery handling is done\n");
- return;
+ return reloaded;
err:
qede_recovery_failed(edev);
+ return false;
}
static void qede_atomic_hw_err_handler(struct qede_dev *edev)
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 126/337] ksmbd: return success for deferred final close
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (123 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 125/337] qede: sync udp_tunnel ports outside qede_lock in the recovery path Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 127/337] ksmbd: fix use-after-free in __close_file_table_ids() Greg Kroah-Hartman
` (218 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Namjae Jeon, Steve French,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Namjae Jeon <linkinjeon@kernel.org>
[ Upstream commit c5db4de8988f1a621556ca5c4537f77b766ca07d ]
ksmbd_close_fd() marks an open file as FP_CLOSED and drops the file table
reference. If another in-flight request still holds a reference, the final
close is deferred until that request drops its reference.
The function currently returns -EINVAL in that deferred-final-close case
because fp is cleared when the reference count does not reach zero. That
turns a valid close into STATUS_FILE_CLOSED.
smb2.compound_find.compound_find_close sends QUERY_DIRECTORY and then
closes the same directory handle before receiving the find response.
The query holds a reference while it builds the response, so close must
mark the handle closed and return success even though final teardown is
delayed. Track whether the handle was successfully transitioned to
FP_CLOSED and return success when only the final close is deferred.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Stable-dep-of: e7188199eff4 ("ksmbd: fix use-after-free in __close_file_table_ids()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/server/vfs_cache.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/smb/server/vfs_cache.c b/fs/smb/server/vfs_cache.c
index 5b6d8bb8edb27..0d3341927b483 100644
--- a/fs/smb/server/vfs_cache.c
+++ b/fs/smb/server/vfs_cache.c
@@ -487,6 +487,7 @@ int ksmbd_close_fd(struct ksmbd_work *work, u64 id)
{
struct ksmbd_file *fp;
struct ksmbd_file_table *ft;
+ bool closed = false;
if (!has_file_id(id))
return 0;
@@ -501,6 +502,7 @@ int ksmbd_close_fd(struct ksmbd_work *work, u64 id)
fp = NULL;
else {
fp->f_state = FP_CLOSED;
+ closed = true;
if (!atomic_dec_and_test(&fp->refcount))
fp = NULL;
}
@@ -508,7 +510,7 @@ int ksmbd_close_fd(struct ksmbd_work *work, u64 id)
write_unlock(&ft->lock);
if (!fp)
- return -EINVAL;
+ return closed ? 0 : -EINVAL;
__put_fd_final(work, fp);
return 0;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 127/337] ksmbd: fix use-after-free in __close_file_table_ids()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (124 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 126/337] ksmbd: return success for deferred final close Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 128/337] rhashtable: clear stale iter->p on table restart Greg Kroah-Hartman
` (217 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yunseong Kim, Namjae Jeon,
Steve French, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Namjae Jeon <linkinjeon@kernel.org>
[ Upstream commit e7188199eff46a636f3436356f0aae039be6dd66 ]
A ksmbd_file can remain alive after logical close while another session
holds a temporary reference obtained through ksmbd_lookup_fd_inode().
ksmbd_close_fd() currently marks the file closed and drops the idr-owned
reference, but leaves the pointer published in the closing session's idr
until the final reference is dropped.
If the foreign holder performs the final ksmbd_fd_put(), __put_fd_final()
supplies the foreign session's file table to __ksmbd_close_fd(). The object
is then freed without being removed from its owner's idr, and the owner
session later dereferences the stale pointer during file-table teardown.
Remove the volatile id from the owner's idr while ksmbd_close_fd() still
holds that table's lock, and clear volatile_id before dropping
the idr-owned reference. A later foreign final put then only performs
physical destruction and cannot remove the object from the wrong table.
Fixes: 8510a043d334 ("ksmbd: increment reference count of parent fp")
Reported-by: Yunseong Kim <yunseong.kim@est.tech>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/server/vfs_cache.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/smb/server/vfs_cache.c b/fs/smb/server/vfs_cache.c
index 0d3341927b483..51e37e89d1aa5 100644
--- a/fs/smb/server/vfs_cache.c
+++ b/fs/smb/server/vfs_cache.c
@@ -502,6 +502,8 @@ int ksmbd_close_fd(struct ksmbd_work *work, u64 id)
fp = NULL;
else {
fp->f_state = FP_CLOSED;
+ idr_remove(ft->idr, id);
+ fp->volatile_id = KSMBD_NO_FID;
closed = true;
if (!atomic_dec_and_test(&fp->refcount))
fp = NULL;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 128/337] rhashtable: clear stale iter->p on table restart
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (125 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 127/337] ksmbd: fix use-after-free in __close_file_table_ids() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 129/337] pinctrl: microchip-sgpio: add missing select REGMAP_MMIO Greg Kroah-Hartman
` (216 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, AutonomousCodeSecurity, Yuan Tan,
Cen Zhang (Microsoft), NeilBrown, Herbert Xu, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang (Microsoft) <blbllhy@gmail.com>
[ Upstream commit 8173f7e2ce67e6ca1d4763f3da14e5b01ce77456 ]
rhashtable_walk_start_check() has two restart paths when resuming a walk.
When iter->walker.tbl is valid, it re-validates iter->p against the table
and sets iter->p = NULL if the object is gone. When iter->walker.tbl is
NULL (table was freed during resize), it resets slot and skip but forgets
to clear iter->p.
rhashtable_walk_next() then dereferences the stale iter->p, reading
freed memory. This is a use-after-free.
Any caller that does multi-fragment rhashtable walks across
walk_stop/walk_start boundaries is affected. Concrete cases include
netlink_diag (__netlink_diag_dump in net/netlink/diag.c) and TIPC
(tipc_nl_sk_walk in net/tipc/socket.c).
Crash stack (netlink_diag):
BUG: KASAN: slab-use-after-free in rhashtable_walk_next+0x365/0x3c0
Read of size 8 at addr ffff88801a9d2438 (freed kmalloc-2k, offset 1080)
Call Trace:
rhashtable_walk_next+0x365/0x3c0 (lib/rhashtable.c:1016)
__netlink_diag_dump+0x160/0x760 (net/netlink/diag.c:122)
netlink_diag_dump+0xc2/0x240
netlink_dump+0x5bc/0x1270
netlink_recvmsg+0x7a3/0x980
sock_recvmsg+0x1bc/0x200
__sys_recvfrom+0x1d4/0x2c0
Fixes: 5d240a8936f6 ("rhashtable: improve rhashtable_walk stability when stop/start used.")
Cc: <stable@vger.kernel.org>
Reported-by: AutonomousCodeSecurity@microsoft.com
Reported-by: Yuan Tan <yuantan098@gmail.com>
Closes: https://lore.kernel.org/linux-crypto/CAB8m9Wh559e+=n8z51gB8DrbEyCc2mc0MgGjrRR6_VXBmU=2AQ@mail.gmail.com
Signed-off-by: Cen Zhang (Microsoft) <blbllhy@gmail.com>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
lib/rhashtable.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index 0e9a1d4cf89be..16d2ce87c22e2 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -742,6 +742,7 @@ int rhashtable_walk_start_check(struct rhashtable_iter *iter)
iter->walker.tbl = rht_dereference_rcu(ht->tbl, ht);
iter->slot = 0;
iter->skip = 0;
+ iter->p = NULL;
return -EAGAIN;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 129/337] pinctrl: microchip-sgpio: add missing select REGMAP_MMIO
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (126 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 128/337] rhashtable: clear stale iter->p on table restart Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-08 17:33 ` Harshit Mogalapalli
2026-08-07 14:35 ` [PATCH 6.12 130/337] pinctrl: devicetree: dont free uninitialized dev_name on error path Greg Kroah-Hartman
` (215 subsequent siblings)
343 siblings, 1 reply; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Benjamin Boortz, Andy Shevchenko,
Linus Walleij
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Boortz <bennib@mailbox.org>
commit 25cb6e9a13123d1039cdc75b446ac52e1ebdc26d upstream.
The driver calls ocelot_regmap_from_resource() via <linux/mfd/ocelot.h>,
which internally uses devm_regmap_init_mmio() and requires REGMAP_MMIO.
The Kconfig entry does not select REGMAP_MMIO, causing a build failure
when no other driver in the config happens to pull in REGMAP_MMIO:
include/linux/mfd/ocelot.h:34:24: error: implicit declaration of function 'devm_regmap_init_mmio'
Found by randconfig testing on arm64; tinyconfig reproducer below.
Fixes: 2afbbab45c26 ("pinctrl: microchip-sgpio: update to support regmap")
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Boortz <bennib@mailbox.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/pinctrl/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -213,6 +213,7 @@ config PINCTRL_EQUILIBRIUM
select GENERIC_PINCONF
select GENERIC_PINCTRL_GROUPS
select GENERIC_PINMUX_FUNCTIONS
+ select REGMAP_MMIO
help
Equilibrium driver is a pinctrl and GPIO driver for Intel Lightning
Mountain network processor SoC that supports both the GPIO and pin
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 130/337] pinctrl: devicetree: dont free uninitialized dev_name on error path
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (127 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 129/337] pinctrl: microchip-sgpio: add missing select REGMAP_MMIO Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 131/337] erofs: cap LZMA stream pool size Greg Kroah-Hartman
` (214 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Karl Mehltretter, Linus Walleij
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Karl Mehltretter <kmehltretter@gmail.com>
commit 015b5bcbcb622b32317642be91a7f79aa5413649 upstream.
dt_remember_or_free_map() duplicates dev_name for each map entry. If
kstrdup_const() fails, dt_free_map() frees dev_name in all num_maps
entries, including entries that have not been initialized.
Some pinctrl drivers, including pinctrl-imx, allocate the map with
kmalloc() and leave dev_name for the core to initialize. The untouched
entries therefore contain uninitialized data which is passed to
kfree_const().
Reproduced on qemu's mcimx6ul-evk (pinctrl-imx) with failslab injection
while binding the pinctrl-consuming device, under KASAN:
BUG: KASAN: double-free in dt_free_map+0x34/0xa4
Free of addr c425a900 by task init/1
kfree from dt_free_map+0x34/0xa4
dt_free_map from dt_remember_or_free_map+0x184/0x198
dt_remember_or_free_map from pinctrl_dt_to_map+0x33c/0x4c8
pinctrl_dt_to_map from create_pinctrl+0x9c/0x5c0
Initialize all dev_name fields to NULL before duplicating the device
name, making the full-map cleanup safe after a partial failure.
Fixes: be4c60b563ed ("pinctrl: devicetree: Avoid taking direct reference to device name string")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-fable-5
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/pinctrl/devicetree.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/pinctrl/devicetree.c
+++ b/drivers/pinctrl/devicetree.c
@@ -69,6 +69,10 @@ static int dt_remember_or_free_map(struc
int i;
struct pinctrl_dt_map *dt_map;
+ /* Initialize dev_name before any allocation can fail */
+ for (i = 0; i < num_maps; i++)
+ map[i].dev_name = NULL;
+
/* Initialize common mapping table entry fields */
for (i = 0; i < num_maps; i++) {
const char *devname;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 131/337] erofs: cap LZMA stream pool size
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (128 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 130/337] pinctrl: devicetree: dont free uninitialized dev_name on error path Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 132/337] pinctrl: bm1880: add missing select GENERIC_PINCONF Greg Kroah-Hartman
` (213 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Michael Bommarito, Gao Xiang
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
commit c9b47e6b23114e939b17f818471c7a46e59006e7 upstream.
fs/erofs/decompressor_lzma.c sizes the module-global MicroLZMA stream
pool from num_possible_cpus() when the lzma_streams module parameter is
unset, then z_erofs_load_lzma_config() preallocates one image-supplied
dictionary per stream, accepting dictionaries up to 8 MiB. On high-CPU
systems, a small EROFS image can pin hundreds of MiB of vmalloc-backed
decoder state until the erofs module is unloaded.
Impact: An EROFS image mounted by the system can pin up to 8 MiB of
vmalloc memory per LZMA stream, either as intended or unexpectedly.
Bound the default stream count by a new
CONFIG_EROFS_FS_ZIP_LZMA_DEFAULT_MAX_STREAMS option, default 16, so the
worst-case default preallocation is 128 MiB if the number of CPUs is no
less than 16 while preserving the existing per-image dictionary limit.
An explicit lzma_streams module parameter is still honoured as-is, so
administrators who deliberately size the pool are not affected.
Fixes: 622ceaddb764 ("erofs: lzma compression support")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/erofs/Kconfig | 14 ++++++++++++++
fs/erofs/decompressor_lzma.c | 3 ++-
2 files changed, 16 insertions(+), 1 deletion(-)
--- a/fs/erofs/Kconfig
+++ b/fs/erofs/Kconfig
@@ -114,6 +114,20 @@ config EROFS_FS_ZIP_LZMA
If unsure, say N.
+config EROFS_FS_ZIP_LZMA_DEFAULT_MAX_STREAMS
+ int "EROFS LZMA default maximum decompression streams"
+ depends on EROFS_FS_ZIP_LZMA
+ range 1 NR_CPUS
+ default 16
+ help
+ By default EROFS allocates one LZMA decompression stream per CPU.
+ Each stream can hold a dictionary of up to 8 MiB taken from the
+ mounted image, so on systems with many CPUs this can reserve a lot
+ of memory. This caps the default; the lzma_streams module parameter
+ still overrides it.
+
+ If unsure, keep the default of 16.
+
config EROFS_FS_ZIP_DEFLATE
bool "EROFS DEFLATE compressed data support"
depends on EROFS_FS_ZIP
--- a/fs/erofs/decompressor_lzma.c
+++ b/fs/erofs/decompressor_lzma.c
@@ -51,7 +51,8 @@ static int __init z_erofs_lzma_init(void
/* by default, use # of possible CPUs instead */
if (!z_erofs_lzma_nstrms)
- z_erofs_lzma_nstrms = num_possible_cpus();
+ z_erofs_lzma_nstrms = min_t(unsigned int, num_possible_cpus(),
+ CONFIG_EROFS_FS_ZIP_LZMA_DEFAULT_MAX_STREAMS);
for (i = 0; i < z_erofs_lzma_nstrms; ++i) {
struct z_erofs_lzma *strm = kzalloc(sizeof(*strm), GFP_KERNEL);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 132/337] pinctrl: bm1880: add missing select GENERIC_PINCONF
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (129 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 131/337] erofs: cap LZMA stream pool size Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 133/337] fortify: Disable -Wstringop-overread in tests Greg Kroah-Hartman
` (212 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Benjamin Boortz, Linus Walleij
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Benjamin Boortz <bennib@mailbox.org>
commit dad6e107b3cd9d20514e7799b7ad8674f81e3f30 upstream.
drivers/pinctrl/pinctrl-bm1880.c initialises its pinconf_ops with
.is_generic = true, but that field is only present when
CONFIG_GENERIC_PINCONF is enabled (guarded by #ifdef in pinconf.h).
The Kconfig entry for PINCTRL_BM1880 never selects GENERIC_PINCONF,
so any config that enables CONFIG_PINCTRL_BM1880=y without
CONFIG_GENERIC_PINCONF=y fails to compile:
drivers/pinctrl/pinctrl-bm1880.c:1288:10: error: 'const struct pinconf_ops' has no member named 'is_generic'
Found by randconfig testing on arm64; tinyconfig reproducer below.
Add the missing select to fix the build.
Fixes: 49bd61ebce5f ("pinctrl: Add pinconf support for BM1880 SoC")
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Boortz <bennib@mailbox.org>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/pinctrl/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -150,6 +150,7 @@ config PINCTRL_BM1880
depends on OF && (ARCH_BITMAIN || COMPILE_TEST)
default ARCH_BITMAIN
select PINMUX
+ select GENERIC_PINCONF
help
Pinctrl driver for Bitmain BM1880 SoC.
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 133/337] fortify: Disable -Wstringop-overread in tests
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (130 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 132/337] pinctrl: bm1880: add missing select GENERIC_PINCONF Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 134/337] mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE Greg Kroah-Hartman
` (211 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Nathan Chancellor, Kees Cook
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nathan Chancellor <nathan@kernel.org>
commit c1f3e770eec26d6f96dd6d2ea30555ba7c09a244 upstream.
clang recently added support for -Wstringop-overread [1], which is on by
default like -Wfortify-source. This breaks the usage of -Werror in the
fortify tests, resulting in the following false positive warnings in the
kernel build:
warning: unsafe memcmp() usage lacked '__read_overflow2' warning in lib/test_fortify/read_overflow2-memcmp.c
warning: unsafe memcmp() usage lacked '__read_overflow' warning in lib/test_fortify/read_overflow-memcmp.c
warning: unsafe memchr() usage lacked '__read_overflow' warning in lib/test_fortify/read_overflow-memchr.c
Examining the fortify test logs shows a warning like the following in
each of the failed logs:
In file included from lib/test_fortify/read_overflow2-memcmp.c:5:
lib/test_fortify/test_fortify.h:34:2: error: 'memcmp' reading 17 bytes from a region of size 16 [-Werror,-Wstringop-overread]
34 | TEST;
| ^
lib/test_fortify/read_overflow2-memcmp.c:3:2: note: expanded from macro 'TEST'
3 | memcmp(large, small, sizeof(small) + 1)
| ^
1 error generated.
Disable -Wstringop-overread for the fortify tests, as it defeats the
purpose of testing the Linux specific implementation of fortify, like
-Wfortify-source.
Cc: stable@vger.kernel.org
Closes: https://github.com/ClangBuiltLinux/linux/issues/2168
Link: https://github.com/llvm/llvm-project/commit/86f2e71cb8d165b59ad31a442b2391e23826133e [1]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260623-fix-test_fortify-for-clang-stringop-overread-v1-1-15ee8342a953@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
lib/test_fortify/Makefile | 1 +
1 file changed, 1 insertion(+)
--- a/lib/test_fortify/Makefile
+++ b/lib/test_fortify/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
ccflags-y := $(call cc-disable-warning,fortify-source)
+ccflags-y += $(call cc-disable-warning,stringop-overread)
quiet_cmd_test_fortify = TEST $@
cmd_test_fortify = $(CONFIG_SHELL) $(src)/test_fortify.sh \
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 134/337] mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (131 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 133/337] fortify: Disable -Wstringop-overread in tests Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 135/337] fs/proc/task_mmu: fix PAGEMAP_SCAN written state for PMD holes Greg Kroah-Hartman
` (210 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kefeng Wang, Balbir Singh, Zi Yan,
Alistair Popple, Byungchul Park, David Hildenbrand, Gregory Price,
Huang, Ying, Joshua Hahn, Matthew Brost, Rakie Kim, Andrew Morton
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kefeng Wang <wangkefeng.wang@huawei.com>
commit 63867c82d0c0c2d182016a32b1cc0103116b0ea5 upstream.
pte_pfn() and pte_dirty() have undefined behaviour when called on a
non-present PTE. In migrate_vma_collect_pmd(), these functions may be
invoked on non-present entries (e.g., device-private entries), leading
to potential crashes from pte_pfn() or incorrect dirty folio accounting
from pte_dirty(). Fix both by guarding with pte_present() checks.
Link: https://lore.kernel.org/20260708003955.4024340-1-wangkefeng.wang@huawei.com
Link: https://lore.kernel.org/20260706111958.3649651-1-wangkefeng.wang@huawei.com
Fixes: fd35ca3d12cc ("mm/migrate_device.c: copy pte dirty bit to page")
Fixes: 6c287605fd56 ("mm: remember exclusively mapped anonymous pages with PG_anon_exclusive")
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Balbir Singh <balbirs@nvidia.com>
Acked-by: Zi Yan <ziy@nvidia.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Gregory Price <gourry@gourry.net>
Cc: "Huang, Ying" <ying.huang@linux.alibaba.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Ying Huang <ying.huang@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/migrate_device.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/mm/migrate_device.c
+++ b/mm/migrate_device.c
@@ -196,7 +196,8 @@ again:
bool anon_exclusive;
pte_t swp_pte;
- flush_cache_page(vma, addr, pte_pfn(pte));
+ if (pte_present(pte))
+ flush_cache_page(vma, addr, pte_pfn(pte));
anon_exclusive = folio_test_anon(folio) &&
PageAnonExclusive(page);
if (anon_exclusive) {
@@ -216,7 +217,7 @@ again:
migrate->cpages++;
/* Set the dirty flag on the folio now the pte is gone. */
- if (pte_dirty(pte))
+ if (pte_present(pte) && pte_dirty(pte))
folio_mark_dirty(folio);
/* Setup special migration page table entry */
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 135/337] fs/proc/task_mmu: fix PAGEMAP_SCAN written state for PMD holes
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (132 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 134/337] mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 136/337] mm/percpu-km: fix bitmap overflow and accounting in pcpu_create_chunk() Greg Kroah-Hartman
` (209 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kiryl Shutsemau, Sashiko AI review,
Muhammad Usama Anjum, David Hildenbrand (Arm), Peter Xu,
Jann Horn, Liam R. Howlett, Lorenzo Stoakes, Michal Hocko,
Mike Rapoport, Pedro Falcato, Shuah Khan, Suren Baghdasaryan,
Vlastimil Babka, Zenghui Yu, Andrew Morton
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kiryl Shutsemau (Meta) <kas@kernel.org>
commit 40de8160ca7f67d14619ee0351ce5d68fc4a237a upstream.
PAGEMAP_SCAN reports an unpopulated PTE in a uffd-wp VMA as written, but a
range with no page table at all -- a PMD hole -- is skipped:
pagemap_scan_pte_hole() tests p->cur_vma_category, which never carries
PAGE_IS_WRITTEN, so the hole is neither reported nor (under
PM_SCAN_WP_MATCHING) armed.
In a uffd-wp VMA, WP_UNPOPULATED installs uffd-wp markers when protecting
a range, allocating page tables as needed, so an unpopulated slot is
treated as written -- see the pte_none() handling in
pagemap_page_category(). A missing marker therefore means the range was
zapped, e.g. via MADV_DONTNEED. This applies to anon and shmem VMAs.
An anonymous THP is write-protected in place as a huge PMD, so a full-PMD
MADV_DONTNEED clears it to pmd_none -- a hole with no page table -- and
pagemap_scan_pte_hole() misses it. For a MAP_PRIVATE|MAP_ANON mapping
MADV_DONTNEED has fill-with-zeros semantics, so a write-tracking
checkpoint/migration tool (e.g. CRIU) treats the range as unchanged and
keeps its previous contents; after restore or live migration the process
reads stale data instead of zeroes -- data corruption.
Report a hole in a non-hugetlb uffd-wp VMA as written, matching the
pte_none handling in pagemap_page_category(); the existing
PM_SCAN_WP_MATCHING path then arms it via uffd_wp_range().
hugetlb is excluded: pagemap_hugetlb_category() reports an empty hugetlb
entry (huge_pte_none) as not-written, unlike pagemap_page_category(),
which reports pte_none as written. pagemap_scan_pte_hole() fires for a
hugetlb slot only when it has no page table; keeping that not-written
matches how an allocated-but-empty hugetlb entry reads, so the hole and
the empty-entry cases agree within the VMA.
Link: https://lore.kernel.org/20260715144234.442721-2-kirill@shutemov.name
Fixes: 2bad466cc9d9 ("mm/uffd: UFFD_FEATURE_WP_UNPOPULATED")
Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
Reported-by: Sashiko AI review <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260707151349.92143-1-kirill@shutemov.name
Tested-by: Muhammad Usama Anjum <usama.anjum@arm.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Zenghui Yu <zenghui.yu@linux.dev>
Assisted-by: Claude:claude-fable-5
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/proc/task_mmu.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -2690,12 +2690,28 @@ static int pagemap_scan_pte_hole(unsigne
{
struct pagemap_scan_private *p = walk->private;
struct vm_area_struct *vma = walk->vma;
+ unsigned long categories;
int ret, err;
- if (!vma || !pagemap_scan_is_interesting_page(p->cur_vma_category, p))
+ if (!vma)
return 0;
- ret = pagemap_scan_output(p->cur_vma_category, p, addr, &end);
+ /*
+ * In a uffd-wp VMA an unpopulated range is treated as written:
+ * uffd-wp registration populates page tables and installs markers
+ * with WP_UNPOPULATED, so a missing marker means the range was
+ * zapped. See the pte_none() handling in pagemap_page_category().
+ *
+ * hugetlb differs, see pagemap_hugetlb_category().
+ */
+ categories = p->cur_vma_category;
+ if (userfaultfd_wp(vma) && !is_vm_hugetlb_page(vma))
+ categories |= PAGE_IS_WRITTEN;
+
+ if (!pagemap_scan_is_interesting_page(categories, p))
+ return 0;
+
+ ret = pagemap_scan_output(categories, p, addr, &end);
if (addr == end)
return ret;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 136/337] mm/percpu-km: fix bitmap overflow and accounting in pcpu_create_chunk()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (133 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 135/337] fs/proc/task_mmu: fix PAGEMAP_SCAN written state for PMD holes Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 137/337] mm/hugetlb: fix list corruption in allocate_file_region_entries() Greg Kroah-Hartman
` (208 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sashiko, Zi Yan, Dennis Zhou,
Christoph Lameter, Tejun Heo, Andrew Morton
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zi Yan <ziy@nvidia.com>
commit 89b1b79c308818a715e75f28744b70d8940a07c9 upstream.
In pcpu_create_chunk(), nr_pages is the total contiguous backing
allocation, i.e., nr_units * pcpu_unit_pages, but pcpu_chunk_populated()
uses it to set chunk->populated, whose size is pcpu_unit_pages, bitmap.
Since bit N in chunk->populated means page offset N inside every unit is
backed. When nr_units > 1, the function writes beyond chunk->populated.
Fix it by using chunk->nr_pages.
It also fixes the global pcpu_nr_empty_pop_pages accounting, since
pcpu_balance_free() only iterates up to chunk->nr_pages.
Commit a63d4ac4ab609 ("percpu: make percpu-km set chunk->populated bitmap
properly") introduced the bitmap overflow issue. Later, commit
b539b87fed37f ("percpu: implmeent pcpu_nr_empty_pop_pages and
chunk->nr_populated") added pcpu_nr_empty_pop_pages and caused the
accounting issue.
Link: https://lore.kernel.org/20260709-fix-pcpu_create_chunk-in-percpu-km-v1-1-1f64745a84cc@nvidia.com
Fixes: a63d4ac4ab609 ("percpu: make percpu-km set chunk->populated bitmap properly")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260703-keep-subpage-private-zero-at-free-v2-0-2970fe777dd6%40nvidia.com?part=1
Assisted-by: Codex:GPT-5
Signed-off-by: Zi Yan <ziy@nvidia.com>
Acked-by: Dennis Zhou <dennis@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/percpu-km.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/percpu-km.c
+++ b/mm/percpu-km.c
@@ -75,7 +75,7 @@ static struct pcpu_chunk *pcpu_create_ch
chunk->base_addr = page_address(pages);
spin_lock_irqsave(&pcpu_lock, flags);
- pcpu_chunk_populated(chunk, 0, nr_pages);
+ pcpu_chunk_populated(chunk, 0, chunk->nr_pages);
spin_unlock_irqrestore(&pcpu_lock, flags);
pcpu_stats_chunk_alloc();
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 137/337] mm/hugetlb: fix list corruption in allocate_file_region_entries()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (134 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 136/337] mm/percpu-km: fix bitmap overflow and accounting in pcpu_create_chunk() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 138/337] mm/vmstat: fold stranded per-cpu node stats when a node comes online Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Xiangfeng Cai, Muchun Song,
Baoquan He, David Hildenbrand, Oscar Salvador, Shuah Khan,
Wei Yang, Andrew Morton
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiangfeng Cai <caixiangfeng@bytedance.com>
commit dd9623f58ec702a07b2d67179d6fcea79c52231a upstream.
allocate_file_region_entries() tops up resv->region_cache with freshly
allocated file_region descriptors. The allocation uses GFP_KERNEL, so
resv->lock is dropped around it: the new entries are gathered on a
stack-local list head, allocated_regions, and spliced into
resv->region_cache once the lock is re-acquired.
The splice used list_splice(), which moves the entries but does not
re-initialize the source head, so allocated_regions is left pointing at an
entry that now lives on resv->region_cache. The top-up runs in a while
loop that re-checks the cache deficit after re-acquiring the lock. For a
shared mapping the resv_map is shared by every mapper of the hugetlbfs
inode, so a concurrent region_chg()/region_add()/region_del() on the same
resv_map can consume cache entries during the unlocked window and force a
second iteration. That iteration calls list_add() on the stale head and
corrupts the list; with CONFIG_DEBUG_LIST the __list_add_valid() check
trips:
list_add corruption. next->prev should be prev (ffffc900011ff7f8),
but was ffff88814c281460. (next=ffff88814c545640).
kernel BUG at lib/list_debug.c:31!
allocate_file_region_entries+0x191/0x420
region_chg+0x267/0x300
hugetlb_reserve_pages+0x387/0xc80
hugetlbfs_file_mmap+0x2ce/0x3f0
mmap_region+0x1348/0x1a80
do_mmap+0x85e/0xb90
vm_mmap_pgoff+0x18c/0x330
ksys_mmap_pgoff+0x2a1/0x3e0
do_syscall_64+0xd7/0x420
Without CONFIG_DEBUG_LIST the bad list_add() silently links a kernel-stack
address into resv->region_cache, leading to later use-after-free.
This was observed as a real host panic on a dense KVM host where a QEMU
guest-RAM hugetlbfs file was mapped MAP_SHARED by both QEMU and a separate
SPDK/DPDK vhost-user target, generating concurrent region_* traffic on one
shared resv_map.
Use list_splice_init() so the source head is re-initialized empty after
each splice, making the retry loop safe.
Link: https://lore.kernel.org/20260713171456.300518-2-caixiangfeng@bytedance.com
Fixes: d3ec7b6e09e5 ("mm/hugetlb: use list_splice to merge two list at once")
Signed-off-by: Xiangfeng Cai <caixiangfeng@bytedance.com>
Reviewed-by: Muchun Song <muchun.song@linux.dev>
Cc: Baoquan He <baoquan.he@linux.dev>
Cc: David Hildenbrand <david@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/hugetlb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -676,7 +676,7 @@ static int allocate_file_region_entries(
spin_lock(&resv->lock);
- list_splice(&allocated_regions, &resv->region_cache);
+ list_splice_init(&allocated_regions, &resv->region_cache);
resv->region_cache_count += to_allocate;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 138/337] mm/vmstat: fold stranded per-cpu node stats when a node comes online
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (135 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 137/337] mm/hugetlb: fix list corruption in allocate_file_region_entries() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 139/337] tracing/probes: Reject $arg0 in meta argument expansion Greg Kroah-Hartman
` (206 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Gregory Price, Johannes Weiner,
Mel Gorman, Mike Rapoport, Vlastimil Babka, Andrew Morton
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gregory Price <gourry@gourry.net>
commit ea3034b2b00fa50c8d2518d0804c9d427bbafa86 upstream.
A per-node vmstat counter is pgdat->vm_stat[] plus per-cpu deltas. A
balanced counter can sit split as global=+N / per-cpu=-N.
The folds reconciling the split only walk online nodes, so when
try_offline_node() marks a node offline the per-cpu deltas are stranded.
A subsequent online resets the per-cpu area but not pgdat->vm_stat[],
orphaning the +N permanently. All NR_VM_NODE_STAT_ITEMS are affected.
The existing code zeroes the per-cpu counters and causes a permanent skew.
Fold the stranded deltas instead, before the node rejoins the online set.
The node is not online yet and the hotplug lock is held, so the remote
access to per-cpu values is safe.
Discovered when node compaction hung for a nearly empty node, as the math
to determine throttling broke. Reproduced by repeated memory
hotplug/unplug cycles on a node under pressure: NR_ISOLATED_ANON ratchets
up and never returns to zero.
Link: https://lore.kernel.org/20260627202243.758289-1-gourry@gourry.net
Fixes: 75ef71840539 ("mm, vmstat: add infrastructure for per-node vmstats")
Signed-off-by: Gregory Price <gourry@gourry.net>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/mm_init.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -1524,7 +1524,7 @@ void __ref free_area_init_core_hotplug(s
{
int nid = pgdat->node_id;
enum zone_type z;
- int cpu;
+ int cpu, i;
pgdat_init_internals(pgdat);
@@ -1542,10 +1542,17 @@ void __ref free_area_init_core_hotplug(s
pgdat->node_start_pfn = 0;
pgdat->node_present_pages = 0;
- for_each_online_cpu(cpu) {
- struct per_cpu_nodestat *p;
+ /*
+ * Hot-unplug can leave per-cpu vmstat deltas unfolded (folders skip
+ * offline nodes) - reconcile this at online. Foreign access to counters
+ * is safe: the node is not online yet and we hold the hotplug lock.
+ */
+ for_each_possible_cpu(cpu) {
+ struct per_cpu_nodestat *p = per_cpu_ptr(pgdat->per_cpu_nodestats, cpu);
- p = per_cpu_ptr(pgdat->per_cpu_nodestats, cpu);
+ for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++)
+ if (p->vm_node_stat_diff[i])
+ node_page_state_add(p->vm_node_stat_diff[i], pgdat, i);
memset(p, 0, sizeof(*p));
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 139/337] tracing/probes: Reject $arg0 in meta argument expansion
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (136 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 138/337] mm/vmstat: fold stranded per-cpu node stats when a node comes online Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 140/337] KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active Greg Kroah-Hartman
` (205 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Raushan Patel,
Masami Hiramatsu (Google)
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Raushan Patel <raushan.jhon@gmail.com>
commit 00a8ce2a2a9fa17674e1feec4d9105c1a5d6a419 upstream.
traceprobe_expand_meta_args() parses $argN with simple_strtoul() and
calls sprint_nth_btf_arg(n - 1, ...). For $arg0, n is 0 so the index is
-1. Because ctx->nr_params is signed, the "idx >= nr_params" guard in
sprint_nth_btf_arg() does not catch the negative index, and
ctx->params[-1].name_off is read out of bounds.
The normal per-argument path (parse_probe_vars()) already rejects
$arg0 via its argument-number check, but meta-argument expansion runs
before per-argument parsing and substitutes the value first, bypassing
that check.
Reject $arg0 explicitly during expansion.
Link: https://lore.kernel.org/all/20260724054435.146279-1-raushan.jhon@gmail.com/
Fixes: 18b1e870a496 ("tracing/probes: Add $arg* meta argument for all function args")
Cc: stable@vger.kernel.org
Signed-off-by: Raushan Patel <raushan.jhon@gmail.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_probe.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -1766,7 +1766,11 @@ const char **traceprobe_expand_meta_args
ret = -ENOENT;
goto error;
}
- /* Note: $argN starts from $arg1 */
+ /* Note: $argN starts from $arg1, so $arg0 is invalid. */
+ if (n == 0) {
+ trace_probe_log_err(0, BAD_ARG_NUM);
+ return ERR_PTR(-EINVAL);
+ }
ret = sprint_nth_btf_arg(n - 1, type, buf + used,
bufsize - used, ctx);
if (ret < 0)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 140/337] KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (137 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 139/337] tracing/probes: Reject $arg0 in meta argument expansion Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 141/337] KVM: s390: pci: Reject adapter interrupt forwarding if already enabled Greg Kroah-Hartman
` (204 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yosry Ahmed, Sean Christopherson,
Paolo Bonzini
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sean Christopherson <seanjc@google.com>
commit 7d3aae206663c4e006b25a1c7a20a4029e67da76 upstream.
Always update x2APIC MSR intercepts for L1 when AVIC is deactivated, even
if L2 is active and KVM is using a separate MSR bitmap to run L2. If AVIC
is fully enabled prior to running L2, and is then inhibited while L2 is
active (for a VM-scoped inhibit), then KVM will run L1 with AVIC disabled,
but with x2APIC MSR intercepts disabled, i.e. will allow L1 to read most of
the host's APIC state, send arbitrary interrupts, change task priority, and
ultimately trivially DoS the host.
E.g. sending a self-IPI in L1 on HYPERV_REENLIGHTENMENT_VECTOR, 0xee, with
CONFIG_HYPERV=n in the host kernel as a "safe" PoC, yields:
Spurious interrupt (vector 0xee) on CPU#425. Acked
And hacking KVM to abuse kvm_set_posted_intr_wakeup_handler() to register a
handler and WARN on POSTED_INTR_WAKEUP_VECTOR yields:
------------[ cut here ]------------
WARNING: arch/x86/kvm/svm/svm.c:5594 at pi_wakeup_handler+0x9/0x10 [kvm_amd], CPU#156: nested_x2apic_t/316940
CPU: 156 UID: 0 PID: 316940 Comm: nested_x2apic_t Tainted: G S U
Tainted: [S]=CPU_OUT_OF_SPEC, [U]=USER
Hardware name: Google Astoria-Turin/astoria, BIOS 0.20260209.0-0 02/09/2026
RIP: 0010:pi_wakeup_handler+0x9/0x10 [kvm_amd]
Call Trace:
<IRQ>
sysvec_kvm_posted_intr_wakeup_ipi+0x64/0x80
</IRQ>
<TASK>
asm_sysvec_kvm_posted_intr_wakeup_ipi+0x1a/0x20
RIP: 0010:vcpu_run+0x1430/0x1e40 [kvm]
kvm_arch_vcpu_ioctl_run+0x2c1/0x600 [kvm]
kvm_vcpu_ioctl+0x580/0x6b0 [kvm]
__se_sys_ioctl+0x6d/0xb0
do_syscall_64+0x10a/0x480
entry_SYSCALL_64_after_hwframe+0x4b/0x53
RIP: 0033:0x46ff4b
</TASK>
---[ end trace 0000000000000000 ]---
Fixes: 091abbf578f9 ("KVM: x86: nSVM: optimize svm_set_x2apic_msr_interception")
Cc: stable@vger.kernel.org
Cc: Yosry Ahmed <yosry@kernel.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://patch.msgid.link/20260729213558.639074-1-pbonzini@redhat.com/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/svm/avic.c | 8 --------
1 file changed, 8 deletions(-)
--- a/arch/x86/kvm/svm/avic.c
+++ b/arch/x86/kvm/svm/avic.c
@@ -167,14 +167,6 @@ static void avic_deactivate_vmcb(struct
if (!sev_es_guest(svm->vcpu.kvm))
svm_set_intercept(svm, INTERCEPT_CR8_WRITE);
- /*
- * If running nested and the guest uses its own MSR bitmap, there
- * is no need to update L0's msr bitmap
- */
- if (is_guest_mode(&svm->vcpu) &&
- vmcb12_is_intercept(&svm->nested.ctl, INTERCEPT_MSR_PROT))
- return;
-
/* Enabling MSR intercept for x2APIC registers */
svm_set_x2apic_msr_interception(svm, true);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 141/337] KVM: s390: pci: Reject adapter interrupt forwarding if already enabled
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (138 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 140/337] KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 142/337] KVM: s390: pci: Fix NULL dereference on AIBV allocation failure Greg Kroah-Hartman
` (203 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian Borntraeger,
Matthew Rosato, Farhan Ali
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Farhan Ali <alifm@linux.ibm.com>
commit 8fa01be5a6149404adb82c0979a78f6347edd3ef upstream.
The MPCIFC instruction doesn't allow registering adapter interrupts without
first unregistering. So reject any request to enable interrupt forwarding
if its already enabled for the zPCI device. This also fixes overwriting and
thus leaking resources when the ioctl is called multiple times for the same
device.
Fixes: 3c5a1b6f0a18 ("KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding")
Cc: stable@vger.kernel.org
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/s390/kvm/pci.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/s390/kvm/pci.c
+++ b/arch/s390/kvm/pci.c
@@ -239,6 +239,10 @@ static int kvm_s390_pci_aif_enable(struc
if (zdev->gisa == 0)
return -EINVAL;
+ /* AIF already enabled for the device */
+ if (zdev->kzdev->fib.fmt0.aibv != 0)
+ return -EINVAL;
+
kvm = zdev->kzdev->kvm;
msi_vecs = min_t(unsigned int, fib->fmt0.noi, zdev->max_msi);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 142/337] KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (139 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 141/337] KVM: s390: pci: Reject adapter interrupt forwarding if already enabled Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 143/337] KVM: s390: pci: Validate AIBV and AISB before pinning guest pages Greg Kroah-Hartman
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343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian Borntraeger,
Matthew Rosato, Farhan Ali
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Farhan Ali <alifm@linux.ibm.com>
commit 8bf09b9b7d3232806df95f409581f8a9fd99a3fa upstream.
The airq_iv_create() can return NULL on failure, but the return value was
never checked. If it fails, zdev->aibv will be NULL and fail when
dereferenced in kvm_zpci_set_airq(). Add a NULL check and free the
previously allocated AISB bit and zdev->aisb on failure.
Fixes: 3c5a1b6f0a18 ("KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding")
Cc: stable@vger.kernel.org
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/s390/kvm/pci.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/arch/s390/kvm/pci.c
+++ b/arch/s390/kvm/pci.c
@@ -295,6 +295,11 @@ static int kvm_s390_pci_aif_enable(struc
AIRQ_IV_GUESTVEC,
phys_to_virt(fib->fmt0.aibv));
+ if (!zdev->aibv) {
+ rc = -ENOMEM;
+ goto free_aisb;
+ }
+
spin_lock_irq(&aift->gait_lock);
gaite = aift->gait + zdev->aisb;
@@ -331,6 +336,9 @@ static int kvm_s390_pci_aif_enable(struc
rc = kvm_zpci_set_airq(zdev);
return rc;
+free_aisb:
+ airq_iv_free_bit(aift->sbv, zdev->aisb);
+ zdev->aisb = 0;
unlock:
mutex_unlock(&aift->aift_lock);
unpin2:
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 143/337] KVM: s390: pci: Validate AIBV and AISB before pinning guest pages
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (140 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 142/337] KVM: s390: pci: Fix NULL dereference on AIBV allocation failure Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 144/337] sctp: validate Adaptation Indication parameter length Greg Kroah-Hartman
` (201 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian Borntraeger,
Matthew Rosato, Farhan Ali
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Farhan Ali <alifm@linux.ibm.com>
commit 868d32ac72cba21c5c6d8a66a814b7c25a3a5c01 upstream.
The AIBV holds one bit per MSI-X vector for a given function. The size of
the bit vector is derived from the NOI and the AIBVO. If the size of the
AIBV exceeds a single page boundary, then reject the request as we cannot
safely pin the guest AIBV.
Similarly reject the request if the AISB address is not 8-byte aligned as
the architecture requires doubleword alignment for the summary bit address.
Since the AISBO can address up to 64 bits, the size of the AISB can only be
8 bytes for the function. This also ensures the AISB doesn't exceed a
single page boundary.
Fixes: 3c5a1b6f0a18 ("KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding")
Cc: stable@vger.kernel.org
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/s390/kvm/pci.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
--- a/arch/s390/kvm/pci.c
+++ b/arch/s390/kvm/pci.c
@@ -225,7 +225,7 @@ static int kvm_s390_pci_aif_enable(struc
bool assist)
{
struct page *pages[1], *aibv_page, *aisb_page = NULL;
- unsigned int msi_vecs, idx;
+ unsigned int msi_vecs, idx, size;
struct zpci_gaite *gaite;
unsigned long hva, bit;
struct kvm *kvm;
@@ -252,6 +252,14 @@ static int kvm_s390_pci_aif_enable(struc
return gisc;
/* Replace AIBV address */
+ size = BITS_TO_LONGS(msi_vecs + fib->fmt0.aibvo) * sizeof(unsigned long);
+ npages = DIV_ROUND_UP((fib->fmt0.aibv & ~PAGE_MASK) + size, PAGE_SIZE);
+ /* AIBV cannot span more than 1 page */
+ if (npages > 1) {
+ rc = -EINVAL;
+ goto out;
+ }
+
idx = srcu_read_lock(&kvm->srcu);
hva = gfn_to_hva(kvm, gpa_to_gfn((gpa_t)fib->fmt0.aibv));
npages = pin_user_pages_fast(hva, 1, FOLL_WRITE | FOLL_LONGTERM, pages);
@@ -267,6 +275,12 @@ static int kvm_s390_pci_aif_enable(struc
/* Pin the guest AISB if one was specified */
if (fib->fmt0.sum == 1) {
+ /* AISB must be dword aligned */
+ if (fib->fmt0.aisb & 0x7) {
+ rc = -EINVAL;
+ goto unpin1;
+ }
+
idx = srcu_read_lock(&kvm->srcu);
hva = gfn_to_hva(kvm, gpa_to_gfn((gpa_t)fib->fmt0.aisb));
npages = pin_user_pages_fast(hva, 1, FOLL_WRITE | FOLL_LONGTERM,
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 144/337] sctp: validate Adaptation Indication parameter length
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (141 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 143/337] KVM: s390: pci: Validate AIBV and AISB before pinning guest pages Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 145/337] audit: fix potential integer overflow in audit_log_n_string() Greg Kroah-Hartman
` (200 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Charles Vosburgh, Xin Long,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Charles Vosburgh <trilobyte777@gmail.com>
commit 74b21f52c5c5a71a05c0ff70e513f4f04ff28b17 upstream.
The Adaptation Layer Indication parameter contains a fixed 32-bit
Adaptation Code Point after its parameter header. However,
sctp_verify_param() accepts a header-only parameter because the generic
parameter walker only requires the header to be present.
sctp_process_param() then reads adaptation_ind beyond the declared
parameter. When the malformed parameter is last in an INIT, the read
starts at the receive skb tail, and the value is copied into the state
cookie returned in the INIT ACK. This may disclose four receive-buffer
tail bytes.
Require the declared parameter length to match the fixed structure size
and abort the association through the existing invalid parameter length
path otherwise.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Charles Vosburgh <trilobyte777@gmail.com>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20260727-sctp-adaptation-length-v1-1-0ab58b2810a5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/sctp/sm_make_chunk.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2187,7 +2187,13 @@ static enum sctp_ierror sctp_verify_para
case SCTP_PARAM_HEARTBEAT_INFO:
case SCTP_PARAM_UNRECOGNIZED_PARAMETERS:
case SCTP_PARAM_ECN_CAPABLE:
+ break;
case SCTP_PARAM_ADAPTATION_LAYER_IND:
+ if (ntohs(param.p->length) != sizeof(*param.aind)) {
+ sctp_process_inv_paramlength(asoc, param.p,
+ chunk, err_chunk);
+ retval = SCTP_IERROR_ABORT;
+ }
break;
case SCTP_PARAM_SUPPORTED_EXT:
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 145/337] audit: fix potential integer overflow in audit_log_n_string()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (142 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 144/337] sctp: validate Adaptation Indication parameter length Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 146/337] audit: fix potential use-after-free in audit_del_rule() Greg Kroah-Hartman
` (199 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhan Xusheng, Paul Moore
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhan Xusheng <zhanxusheng1024@gmail.com>
commit f865c143629d4094866a811dba5f329250bad486 upstream.
audit_log_n_string() computes new_len as "slen + 3" (enclosing quotes
plus the NUL terminator) and stores it into an int, while slen is a
size_t. For a sufficiently large slen the addition can overflow and/or
the result be truncated when assigned to the int new_len, so the
"new_len > avail" check can be bypassed and the subsequent
memcpy(ptr, string, slen) can write past the skb tail.
This is the same class of bug that was fixed for the hex sibling in
commit 65dfde57d1e2 ("audit: fix potential integer overflow in
audit_log_n_hex()"); both helpers are reached through
audit_log_n_untrustedstring() with the same length source.
Make new_len a size_t and use check_add_overflow() to catch the
overflow, mirroring the audit_log_n_hex() fix. No functional change for
the in-tree callers, which all pass bounded lengths.
Cc: stable@vger.kernel.org
Fixes: 168b7173959f ("AUDIT: Clean up logging of untrusted strings")
Signed-off-by: Zhan Xusheng <zhanxusheng@xiaomi.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/audit.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -2070,7 +2070,8 @@ void audit_log_n_hex(struct audit_buffer
void audit_log_n_string(struct audit_buffer *ab, const char *string,
size_t slen)
{
- int avail, new_len;
+ int avail;
+ size_t new_len;
unsigned char *ptr;
struct sk_buff *skb;
@@ -2080,7 +2081,13 @@ void audit_log_n_string(struct audit_buf
BUG_ON(!ab->skb);
skb = ab->skb;
avail = skb_tailroom(skb);
- new_len = slen + 3; /* enclosing quotes + null terminator */
+
+ /* enclosing quotes + null terminator */
+ if (check_add_overflow(slen, 3, &new_len)) {
+ audit_log_format(ab, "?");
+ return;
+ }
+
if (new_len > avail) {
avail = audit_expand(ab, new_len);
if (!avail)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 146/337] audit: fix potential use-after-free in audit_del_rule()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (143 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 145/337] audit: fix potential integer overflow in audit_log_n_string() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 147/337] Bluetooth: btusb: Fix short read errors in btusb_qca_send_vendor_req() Greg Kroah-Hartman
` (198 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vega, Luxiao Xu, Ren Wei, Paul Moore
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Luxiao Xu <rakukuip@gmail.com>
commit 246df90b5f1a8a6e6abbd2f058b029558720adec upstream.
`audit_del_rule()` destroys `e->rule.exe` via `audit_remove_mark_rule()`
before unlinking the rule from RCU-visible filter lists and waiting for a
grace period. Concurrent readers in `audit_filter()` and
`audit_filter_rules()` still dereference `e->rule.exe`, while the fsnotify
mark can be freed on an independent lifetime path. This creates a
use-after-free window during rule deletion.
Fix this by unlinking the rule from the RCU-visible lists and invoking
`synchronize_rcu()` before calling `audit_remove_mark_rule()` (and other
rule removal helpers). This ensures that all existing RCU readers have
exited the critical section before any underlying resources are destroyed.
Cc: stable@vger.kernel.org
Fixes: 34d99af52ad4 ("audit: implement audit by executable")
Reported-by: Vega <vega@nebusec.ai>
Assisted-by: Codex:gpt-5.4
Signed-off-by: Luxiao Xu <rakukuip@gmail.com>
Signed-off-by: Ren Wei <enjou1224z@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/auditfilter.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -1047,6 +1047,10 @@ int audit_del_rule(struct audit_entry *e
goto out;
}
+ list_del_rcu(&e->list);
+ list_del(&e->rule.list);
+ synchronize_rcu();
+
if (e->rule.watch)
audit_remove_watch_rule(&e->rule);
@@ -1064,8 +1068,6 @@ int audit_del_rule(struct audit_entry *e
audit_signals--;
#endif
- list_del_rcu(&e->list);
- list_del(&e->rule.list);
call_rcu(&e->rcu, audit_free_rule_rcu);
out:
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 147/337] Bluetooth: btusb: Fix short read errors in btusb_qca_send_vendor_req()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (144 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 146/337] audit: fix potential use-after-free in audit_del_rule() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 148/337] Bluetooth: btmtk: Fix short read errors in btmtk_usb_uhw_reg_read() Greg Kroah-Hartman
` (197 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Luiz Augusto von Dentz
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit cac43d360c928bc0cbbd18809632388265649761 upstream.
If btusb_qca_send_vendor_req() gets a "short" read from a device, it
will accidentally treat that as a "real" read and populate the returned
value with some unknown and probably totally invalid data.
Fix this logic error up by calling usb_control_msg_recv() which
guarantees a "full" read happens, and then simplify the error checking
for when btusb_qca_send_vendor_req() is called.
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/bluetooth/btusb.c | 30 +++++++++---------------------
1 file changed, 9 insertions(+), 21 deletions(-)
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3304,28 +3304,16 @@ static u16 qca_extract_board_id(const st
static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
void *data, u16 size)
{
- int pipe, err;
- u8 *buf;
-
- buf = kmalloc(size, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
+ int err;
/* Found some of USB hosts have IOT issues with ours so that we should
* not wait until HCI layer is ready.
*/
- pipe = usb_rcvctrlpipe(udev, 0);
- err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
- 0, 0, buf, size, USB_CTRL_GET_TIMEOUT);
- if (err < 0) {
+ err = usb_control_msg_recv(udev, 0, request, USB_TYPE_VENDOR | USB_DIR_IN,
+ 0, 0, data, size, USB_CTRL_GET_TIMEOUT,
+ GFP_KERNEL);
+ if (err)
dev_err(&udev->dev, "Failed to access otp area (%d)", err);
- goto done;
- }
-
- memcpy(data, buf, size);
-
-done:
- kfree(buf);
return err;
}
@@ -3519,7 +3507,7 @@ static bool btusb_qca_need_patch(struct
struct qca_version ver;
if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
- sizeof(ver)) < 0)
+ sizeof(ver)))
return false;
/* only low ROM versions need patches */
return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
@@ -3537,7 +3525,7 @@ static int btusb_setup_qca(struct hci_de
err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
sizeof(ver));
- if (err < 0)
+ if (err)
return err;
ver_rom = le32_to_cpu(ver.rom_version);
@@ -3560,7 +3548,7 @@ static int btusb_setup_qca(struct hci_de
err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
sizeof(status));
- if (err < 0)
+ if (err)
return err;
if (!(status & QCA_PATCH_UPDATED)) {
@@ -3571,7 +3559,7 @@ static int btusb_setup_qca(struct hci_de
err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
sizeof(ver));
- if (err < 0)
+ if (err)
return err;
btdata->qca_dump.fw_version = le32_to_cpu(ver.patch_version);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 148/337] Bluetooth: btmtk: Fix short read errors in btmtk_usb_uhw_reg_read()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (145 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 147/337] Bluetooth: btusb: Fix short read errors in btusb_qca_send_vendor_req() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 149/337] Bluetooth: mgmt: fix pending command UAF in EIR updates Greg Kroah-Hartman
` (196 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Luiz Augusto von Dentz
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b186c18c4843dd58adc29443369bddc71cb626a3 upstream.
If btmtk_usb_uhw_reg_read() gets a "short" read from a device, it will
accidentally treat that as a "real" read and populate the returned value
with some unknown and probably totally invalid data.
Fix this logic error up by calling usb_control_msg_recv() which
guarantees a "full" read happens, and then simplify the error checking
for when btmtk_usb_uhw_reg_read() is called.
Note, one caller of btmtk_usb_uhw_reg_read() does not check the return
value, but as we pre-initialize the return value as 0, an incorrect read
will not do anything wrong.
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/bluetooth/btmtk.c | 50 ++++++++++++++++++++--------------------------
1 file changed, 22 insertions(+), 28 deletions(-)
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -763,30 +763,24 @@ static int btmtk_usb_uhw_reg_write(struc
static int btmtk_usb_uhw_reg_read(struct hci_dev *hdev, u32 reg, u32 *val)
{
struct btmtk_data *data = hci_get_priv(hdev);
- int pipe, err;
- void *buf;
-
- buf = kzalloc(4, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
+ u8 buf[sizeof(u32)];
+ int err;
- pipe = usb_rcvctrlpipe(data->udev, 0);
- err = usb_control_msg(data->udev, pipe, 0x01,
- 0xDE,
- reg >> 16, reg & 0xffff,
- buf, 4, USB_CTRL_GET_TIMEOUT);
- if (err < 0) {
+ *val = 0;
+ err = usb_control_msg_recv(data->udev, 0, 0x01,
+ 0xDE,
+ reg >> 16, reg & 0xffff,
+ buf, sizeof(buf), USB_CTRL_GET_TIMEOUT,
+ GFP_KERNEL);
+ if (err) {
bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
- goto err_free_buf;
+ return err;
}
*val = get_unaligned_le32(buf);
bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
-err_free_buf:
- kfree(buf);
-
- return err;
+ return 0;
}
static int btmtk_usb_reg_read(struct hci_dev *hdev, u32 reg, u32 *val)
@@ -836,7 +830,7 @@ int btmtk_usb_subsys_reset(struct hci_de
if (dev_id == 0x7922) {
err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_SUBSYS_RST, &val);
- if (err < 0)
+ if (err)
return err;
val |= 0x00002020;
err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_SUBSYS_RST, val);
@@ -846,7 +840,7 @@ int btmtk_usb_subsys_reset(struct hci_de
if (err < 0)
return err;
err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_SUBSYS_RST, &val);
- if (err < 0)
+ if (err)
return err;
val |= BIT(0);
err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_SUBSYS_RST, val);
@@ -855,14 +849,14 @@ int btmtk_usb_subsys_reset(struct hci_de
msleep(100);
} else if (dev_id == 0x7925) {
err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_RESET_REG_CONNV3, &val);
- if (err < 0)
+ if (err)
return err;
val |= (1 << 5);
err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_RESET_REG_CONNV3, val);
if (err < 0)
return err;
err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_RESET_REG_CONNV3, &val);
- if (err < 0)
+ if (err)
return err;
val &= 0xFFFF00FF;
val |= (1 << 13);
@@ -873,7 +867,7 @@ int btmtk_usb_subsys_reset(struct hci_de
if (err < 0)
return err;
err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_RESET_REG_CONNV3, &val);
- if (err < 0)
+ if (err)
return err;
val |= (1 << 0);
err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_RESET_REG_CONNV3, val);
@@ -883,13 +877,13 @@ int btmtk_usb_subsys_reset(struct hci_de
if (err < 0)
return err;
err = btmtk_usb_uhw_reg_read(hdev, MTK_UDMA_INT_STA_BT, &val);
- if (err < 0)
+ if (err)
return err;
err = btmtk_usb_uhw_reg_write(hdev, MTK_UDMA_INT_STA_BT1, 0x000000FF);
if (err < 0)
return err;
err = btmtk_usb_uhw_reg_read(hdev, MTK_UDMA_INT_STA_BT1, &val);
- if (err < 0)
+ if (err)
return err;
msleep(100);
} else {
@@ -899,7 +893,7 @@ int btmtk_usb_subsys_reset(struct hci_de
if (err < 0)
return err;
err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_WDT_STATUS, &val);
- if (err < 0)
+ if (err)
return err;
/* Reset the bluetooth chip via USB interface. */
err = btmtk_usb_uhw_reg_write(hdev, MTK_BT_SUBSYS_RST, 1);
@@ -909,13 +903,13 @@ int btmtk_usb_subsys_reset(struct hci_de
if (err < 0)
return err;
err = btmtk_usb_uhw_reg_read(hdev, MTK_UDMA_INT_STA_BT, &val);
- if (err < 0)
+ if (err)
return err;
err = btmtk_usb_uhw_reg_write(hdev, MTK_UDMA_INT_STA_BT1, 0x000000FF);
if (err < 0)
return err;
err = btmtk_usb_uhw_reg_read(hdev, MTK_UDMA_INT_STA_BT1, &val);
- if (err < 0)
+ if (err)
return err;
/* MT7921 need to delay 20ms between toggle reset bit */
msleep(20);
@@ -923,7 +917,7 @@ int btmtk_usb_subsys_reset(struct hci_de
if (err < 0)
return err;
err = btmtk_usb_uhw_reg_read(hdev, MTK_BT_SUBSYS_RST, &val);
- if (err < 0)
+ if (err)
return err;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 149/337] Bluetooth: mgmt: fix pending command UAF in EIR updates
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (146 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 148/337] Bluetooth: btmtk: Fix short read errors in btmtk_usb_uhw_reg_read() Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 150/337] Bluetooth: mgmt: fix UAF in pair command cancellation Greg Kroah-Hartman
` (195 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vega, Zihan Xi, Ren Wei,
Luiz Augusto von Dentz
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zihan Xi <zihanx@nebusec.ai>
commit 8f2f62855a41d1730fb9e8122912bd2c8d6bed5d upstream.
MGMT_OP_SET_LOCAL_NAME is handled asynchronously on powered controllers
and can run set_name_sync(). When the controller is BR/EDR capable,
set_name_sync() updates the local name and then rebuilds EIR data through
eir_create(). The EIR builder walks hdev->uuids, but the UUID list can
be changed and entries can be freed by MGMT_OP_ADD_UUID and
MGMT_OP_REMOVE_UUID.
pending_eir_or_class() is meant to serialize management commands that
can change EIR or the class of device, but it did not include
MGMT_OP_SET_LOCAL_NAME. In addition, it walked hdev->mgmt_pending
without hdev->mgmt_pending_lock even though pending commands are added
and removed under that mutex. A racing command completion can therefore
remove and free a pending command while pending_eir_or_class() is still
inspecting it, leading to a use-after-free in the pending-command list or
allowing a local name update to rebuild EIR while UUID entries are being
removed.
Take hdev->mgmt_pending_lock while scanning hdev->mgmt_pending and treat
MGMT_OP_SET_LOCAL_NAME as an EIR/class-affecting pending command on the
powered asynchronous path. Check for a conflicting pending command before
copying the new short name so a rejected SET_LOCAL_NAME request does not
modify hdev->short_name.
Fixes: 6fe26f694c82 ("Bluetooth: MGMT: Protect mgmt_pending list with its own lock")
Cc: stable@vger.kernel.org
Reported-by: Vega <vega@nebusec.ai>
Assisted-by: Codex:gpt-5.4
Signed-off-by: Zihan Xi <zihanx@nebusec.ai>
Signed-off-by: Ren Wei <enjou1224z@gmail.com>
Reported-by: Vega <vega@nebusec.ai>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/bluetooth/mgmt.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2617,18 +2617,28 @@ unlock:
static bool pending_eir_or_class(struct hci_dev *hdev)
{
struct mgmt_pending_cmd *cmd;
+ bool pending = false;
+
+ mutex_lock(&hdev->mgmt_pending_lock);
list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
switch (cmd->opcode) {
case MGMT_OP_ADD_UUID:
case MGMT_OP_REMOVE_UUID:
case MGMT_OP_SET_DEV_CLASS:
+ case MGMT_OP_SET_LOCAL_NAME:
case MGMT_OP_SET_POWERED:
- return true;
+ pending = true;
+ break;
}
+
+ if (pending)
+ break;
}
- return false;
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
+ return pending;
}
static const u8 bluetooth_base_uuid[] = {
@@ -3964,6 +3974,12 @@ static int set_local_name(struct sock *s
goto failed;
}
+ if (hdev_is_powered(hdev) && pending_eir_or_class(hdev)) {
+ err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME,
+ MGMT_STATUS_BUSY);
+ goto failed;
+ }
+
memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name));
if (!hdev_is_powered(hdev)) {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 150/337] Bluetooth: mgmt: fix UAF in pair command cancellation
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (147 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 149/337] Bluetooth: mgmt: fix pending command UAF in EIR updates Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 151/337] Bluetooth: hci_sync: Fix advertising data UAFs Greg Kroah-Hartman
` (194 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vega, Zihan Xi, Ren Wei,
Luiz Augusto von Dentz
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zihan Xi <xizh2024@lzu.edu.cn>
commit d0a7b48ad0921bd88effaee10bf970ab1d5d0ddd upstream.
The pairing completion and authentication failure callbacks look up the
pending MGMT_OP_PAIR_DEVICE command by walking hdev->mgmt_pending. The
lookup returned a command that was still linked on the shared pending list,
without keeping mgmt_pending_lock held for the later dereference and
removal.
A concurrent MGMT_OP_CANCEL_PAIR_DEVICE request can remove and free the
same pending command before the callback uses it. The reverse race is also
possible when cancel_pair_device() gets a command from pending_find() and a
callback removes it before the cancel path dereferences it. This can lead
to a use-after-free and a second list_del().
Make the pairing lookup helpers transfer ownership of the pending command
by removing it from hdev->mgmt_pending while holding mgmt_pending_lock.
The callbacks and cancel path then complete the command and free it
directly, so racing paths cannot find or free the same command again. Take
a temporary hci_conn reference in cancel_pair_device() because the command
completion drops the reference stored in the pending command.
Fixes: e9a416b5ce0c ("Bluetooth: Add mgmt_pair_device command")
Cc: stable@vger.kernel.org
Reported-by: Vega <vega@nebusec.ai>
Assisted-by: Codex:gpt-5.4
Signed-off-by: Zihan Xi <xizh2024@lzu.edu.cn>
Reviewed-by: Ren Wei <enjou1224z@gmail.com>
Reported-by: Vega <vega@nebusec.ai>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/bluetooth/mgmt.c | 64 ++++++++++++++++++++++++++++++++++++---------------
1 file changed, 46 insertions(+), 18 deletions(-)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3445,11 +3445,13 @@ static int set_io_capability(struct sock
NULL, 0);
}
-static struct mgmt_pending_cmd *find_pairing(struct hci_conn *conn)
+static struct mgmt_pending_cmd *remove_pairing(struct hci_conn *conn)
{
struct hci_dev *hdev = conn->hdev;
struct mgmt_pending_cmd *cmd;
+ mutex_lock(&hdev->mgmt_pending_lock);
+
list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
if (cmd->opcode != MGMT_OP_PAIR_DEVICE)
continue;
@@ -3457,9 +3459,39 @@ static struct mgmt_pending_cmd *find_pai
if (cmd->user_data != conn)
continue;
+ list_del(&cmd->list);
+ mutex_unlock(&hdev->mgmt_pending_lock);
return cmd;
}
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
+ return NULL;
+}
+
+static struct mgmt_pending_cmd *remove_pairing_by_addr(struct hci_dev *hdev,
+ bdaddr_t *bdaddr)
+{
+ struct mgmt_pending_cmd *cmd;
+ struct hci_conn *conn;
+
+ mutex_lock(&hdev->mgmt_pending_lock);
+
+ list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
+ if (cmd->opcode != MGMT_OP_PAIR_DEVICE)
+ continue;
+
+ conn = cmd->user_data;
+ if (bacmp(bdaddr, &conn->dst) != 0)
+ continue;
+
+ list_del(&cmd->list);
+ mutex_unlock(&hdev->mgmt_pending_lock);
+ return cmd;
+ }
+
+ mutex_unlock(&hdev->mgmt_pending_lock);
+
return NULL;
}
@@ -3497,10 +3529,10 @@ void mgmt_smp_complete(struct hci_conn *
u8 status = complete ? MGMT_STATUS_SUCCESS : MGMT_STATUS_FAILED;
struct mgmt_pending_cmd *cmd;
- cmd = find_pairing(conn);
+ cmd = remove_pairing(conn);
if (cmd) {
cmd->cmd_complete(cmd, status);
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
}
}
@@ -3510,14 +3542,14 @@ static void pairing_complete_cb(struct h
BT_DBG("status %u", status);
- cmd = find_pairing(conn);
+ cmd = remove_pairing(conn);
if (!cmd) {
BT_DBG("Unable to find a pending command");
return;
}
cmd->cmd_complete(cmd, mgmt_status(status));
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
}
static void le_pairing_complete_cb(struct hci_conn *conn, u8 status)
@@ -3529,14 +3561,14 @@ static void le_pairing_complete_cb(struc
if (!status)
return;
- cmd = find_pairing(conn);
+ cmd = remove_pairing(conn);
if (!cmd) {
BT_DBG("Unable to find a pending command");
return;
}
cmd->cmd_complete(cmd, mgmt_status(status));
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
}
static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
@@ -3693,23 +3725,17 @@ static int cancel_pair_device(struct soc
goto unlock;
}
- cmd = pending_find(MGMT_OP_PAIR_DEVICE, hdev);
+ cmd = remove_pairing_by_addr(hdev, &addr->bdaddr);
if (!cmd) {
err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
MGMT_STATUS_INVALID_PARAMS);
goto unlock;
}
- conn = cmd->user_data;
-
- if (bacmp(&addr->bdaddr, &conn->dst) != 0) {
- err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE,
- MGMT_STATUS_INVALID_PARAMS);
- goto unlock;
- }
+ conn = hci_conn_get(cmd->user_data);
cmd->cmd_complete(cmd, MGMT_STATUS_CANCELLED);
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0,
addr, sizeof(*addr));
@@ -3727,6 +3753,8 @@ static int cancel_pair_device(struct soc
if (conn->conn_reason == CONN_REASON_PAIR_DEVICE)
hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM);
+ hci_conn_put(conn);
+
unlock:
hci_dev_unlock(hdev);
return err;
@@ -10221,14 +10249,14 @@ void mgmt_auth_failed(struct hci_conn *c
ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type);
ev.status = status;
- cmd = find_pairing(conn);
+ cmd = remove_pairing(conn);
mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev),
cmd ? cmd->sk : NULL);
if (cmd) {
cmd->cmd_complete(cmd, status);
- mgmt_pending_remove(cmd);
+ mgmt_pending_free(cmd);
}
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 151/337] Bluetooth: hci_sync: Fix advertising data UAFs
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (148 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 150/337] Bluetooth: mgmt: fix UAF in pair command cancellation Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 152/337] Bluetooth: HIDP: reject frames without a transaction header Greg Kroah-Hartman
` (193 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Luiz Augusto von Dentz, Chengfeng Ye,
Luiz Augusto von Dentz
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chengfeng Ye <nicoyip.dev@gmail.com>
commit cdc36db204ffd97b947d64374cf23a210dc74777 upstream.
hci_find_adv_instance() returns an adv_info pointer that is valid only
while hdev->lock is held. The advertising command-sync paths perform
instance lookups without that lock and, in some cases, retain the pointer
while waiting for a controller response.
An advertising termination event can therefore interleave as follows:
hci_cmd_sync_work hci_rx_work
hci_find_adv_instance()
__hci_cmd_sync_status()
wait for controller reply hci_dev_lock()
hci_remove_adv_instance()
kfree(adv)
adv->scan_rsp_changed = false
KASAN reported:
BUG: KASAN: slab-use-after-free in hci_set_ext_scan_rsp_data_sync+0x2e1/0x300
Write of size 1 at addr ffff88810a45d21d by task kworker/u17:0/88
Workqueue: hci0 hci_cmd_sync_work
Call Trace:
hci_set_ext_scan_rsp_data_sync+0x2e1/0x300
hci_schedule_adv_instance_sync+0x390/0x4c0
hci_cmd_sync_work+0x173/0x300
Allocated by task 87:
hci_add_adv_instance+0x538/0xac0
add_advertising+0x885/0x1160
Freed by task 89:
kfree+0x131/0x3c0
hci_remove_adv_instance+0x1d8/0x3b0
hci_le_ext_adv_term_evt+0x17b/0x730
Protect the instance lookup and payload construction in the extended
advertising, scan response, and periodic advertising data paths. Snapshot
the advertising parameters under hdev->lock, but release the lock before
waiting for the controller.
Clear advertising-data dirty bits before issuing their commands and
restore them after a failure using a fresh lookup. Likewise, update the
reported transmit power through a fresh lookup after the parameter command
completes. No adv_info pointer then survives an HCI command wait.
Fixes: cba6b758711c ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 2")
Cc: stable@vger.kernel.org
Suggested-by: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Signed-off-by: Chengfeng Ye <nicoyip.dev@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/bluetooth/hci_sync.c | 131 ++++++++++++++++++++++++++++++++++-------------
1 file changed, 97 insertions(+), 34 deletions(-)
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -1228,10 +1228,11 @@ static int hci_set_adv_set_random_addr_s
}
static int
-hci_set_ext_adv_params_sync(struct hci_dev *hdev, struct adv_info *adv,
+hci_set_ext_adv_params_sync(struct hci_dev *hdev, u8 instance,
const struct hci_cp_le_set_ext_adv_params *cp,
struct hci_rp_le_set_ext_adv_params *rp)
{
+ struct adv_info *adv;
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS, sizeof(*cp),
@@ -1259,11 +1260,15 @@ hci_set_ext_adv_params_sync(struct hci_d
if (!rp->status) {
hdev->adv_addr_type = cp->own_addr_type;
- if (!cp->handle) {
+ if (!instance) {
/* Store in hdev for instance 0 */
hdev->adv_tx_power = rp->tx_power;
- } else if (adv) {
- adv->tx_power = rp->tx_power;
+ } else {
+ hci_dev_lock(hdev);
+ adv = hci_find_adv_instance(hdev, instance);
+ if (adv)
+ adv->tx_power = rp->tx_power;
+ hci_dev_unlock(hdev);
}
}
@@ -1279,9 +1284,13 @@ static int hci_set_ext_adv_data_sync(str
int err;
if (instance) {
+ hci_dev_lock(hdev);
+
adv = hci_find_adv_instance(hdev, instance);
- if (!adv || !adv->adv_data_changed)
+ if (!adv || !adv->adv_data_changed) {
+ hci_dev_unlock(hdev);
return 0;
+ }
}
len = eir_create_adv_data(hdev, instance, pdu->data,
@@ -1292,16 +1301,27 @@ static int hci_set_ext_adv_data_sync(str
pdu->operation = LE_SET_ADV_DATA_OP_COMPLETE;
pdu->frag_pref = LE_SET_ADV_DATA_NO_FRAG;
+ if (adv) {
+ adv->adv_data_changed = false;
+ hci_dev_unlock(hdev);
+ }
+
err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_ADV_DATA,
struct_size(pdu, data, len), pdu,
HCI_CMD_TIMEOUT);
- if (err)
+ if (err) {
+ if (instance) {
+ hci_dev_lock(hdev);
+ adv = hci_find_adv_instance(hdev, instance);
+ if (adv)
+ adv->adv_data_changed = true;
+ hci_dev_unlock(hdev);
+ }
+
return err;
+ }
- /* Update data if the command succeed */
- if (adv) {
- adv->adv_data_changed = false;
- } else {
+ if (!instance) {
memcpy(hdev->adv_data, pdu->data, len);
hdev->adv_data_len = len;
}
@@ -1355,22 +1375,22 @@ int hci_setup_ext_adv_instance_sync(stru
struct adv_info *adv;
bool secondary_adv;
- if (instance > 0) {
- adv = hci_find_adv_instance(hdev, instance);
- if (!adv)
- return -EINVAL;
- } else {
- adv = NULL;
- }
-
/* Updating parameters of an active instance will return a
- * Command Disallowed error, so we must first disable the
- * instance if it is active.
+ * Command Disallowed error, so disable it before taking a snapshot.
*/
- if (adv) {
+ if (instance > 0) {
err = hci_disable_ext_adv_instance_sync(hdev, instance);
if (err)
return err;
+
+ hci_dev_lock(hdev);
+ adv = hci_find_adv_instance(hdev, instance);
+ if (!adv) {
+ hci_dev_unlock(hdev);
+ return -EINVAL;
+ }
+ } else {
+ adv = NULL;
}
flags = hci_adv_instance_flags(hdev, instance);
@@ -1381,8 +1401,11 @@ int hci_setup_ext_adv_instance_sync(stru
connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) ||
mgmt_get_connectable(hdev);
- if (!is_advertising_allowed(hdev, connectable))
+ if (!is_advertising_allowed(hdev, connectable)) {
+ if (instance)
+ hci_dev_unlock(hdev);
return -EPERM;
+ }
/* Set require_privacy to true only when non-connectable
* advertising is used and it is not periodic.
@@ -1393,8 +1416,11 @@ int hci_setup_ext_adv_instance_sync(stru
err = hci_get_random_address(hdev, require_privacy,
adv_use_rpa(hdev, flags), adv,
&own_addr_type, &random_addr);
- if (err < 0)
+ if (err < 0) {
+ if (instance)
+ hci_dev_unlock(hdev);
return err;
+ }
memset(&cp, 0, sizeof(cp));
@@ -1445,6 +1471,9 @@ int hci_setup_ext_adv_instance_sync(stru
cp.channel_map = hdev->le_adv_channel_map;
cp.handle = adv ? adv->handle : instance;
+ if (instance)
+ hci_dev_unlock(hdev);
+
if (flags & MGMT_ADV_FLAG_SEC_2M) {
cp.primary_phy = HCI_ADV_PHY_1M;
cp.secondary_phy = HCI_ADV_PHY_2M;
@@ -1457,12 +1486,12 @@ int hci_setup_ext_adv_instance_sync(stru
cp.secondary_phy = HCI_ADV_PHY_1M;
}
- err = hci_set_ext_adv_params_sync(hdev, adv, &cp, &rp);
+ err = hci_set_ext_adv_params_sync(hdev, instance, &cp, &rp);
if (err)
return err;
/* Update adv data as tx power is known now */
- err = hci_set_ext_adv_data_sync(hdev, cp.handle);
+ err = hci_set_ext_adv_data_sync(hdev, instance);
if (err)
return err;
@@ -1470,9 +1499,14 @@ int hci_setup_ext_adv_instance_sync(stru
own_addr_type == ADDR_LE_DEV_RANDOM_RESOLVED) &&
bacmp(&random_addr, BDADDR_ANY)) {
/* Check if random address need to be updated */
- if (adv) {
- if (!bacmp(&random_addr, &adv->random_addr))
+ if (instance) {
+ hci_dev_lock(hdev);
+ adv = hci_find_adv_instance(hdev, instance);
+ if (!adv || !bacmp(&random_addr, &adv->random_addr)) {
+ hci_dev_unlock(hdev);
return 0;
+ }
+ hci_dev_unlock(hdev);
} else {
if (!bacmp(&random_addr, &hdev->random_addr))
return 0;
@@ -1494,9 +1528,13 @@ static int hci_set_ext_scan_rsp_data_syn
int err;
if (instance) {
+ hci_dev_lock(hdev);
+
adv = hci_find_adv_instance(hdev, instance);
- if (!adv || !adv->scan_rsp_changed)
+ if (!adv || !adv->scan_rsp_changed) {
+ hci_dev_unlock(hdev);
return 0;
+ }
}
len = eir_create_scan_rsp(hdev, instance, pdu->data);
@@ -1506,15 +1544,27 @@ static int hci_set_ext_scan_rsp_data_syn
pdu->operation = LE_SET_ADV_DATA_OP_COMPLETE;
pdu->frag_pref = LE_SET_ADV_DATA_NO_FRAG;
+ if (adv) {
+ adv->scan_rsp_changed = false;
+ hci_dev_unlock(hdev);
+ }
+
err = __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA,
struct_size(pdu, data, len), pdu,
HCI_CMD_TIMEOUT);
- if (err)
+ if (err) {
+ if (instance) {
+ hci_dev_lock(hdev);
+ adv = hci_find_adv_instance(hdev, instance);
+ if (adv)
+ adv->scan_rsp_changed = true;
+ hci_dev_unlock(hdev);
+ }
+
return err;
+ }
- if (adv) {
- adv->scan_rsp_changed = false;
- } else {
+ if (!instance) {
memcpy(hdev->scan_rsp_data, pdu->data, len);
hdev->scan_rsp_data_len = len;
}
@@ -1529,8 +1579,14 @@ static int __hci_set_scan_rsp_data_sync(
memset(&cp, 0, sizeof(cp));
+ if (instance)
+ hci_dev_lock(hdev);
+
len = eir_create_scan_rsp(hdev, instance, cp.data);
+ if (instance)
+ hci_dev_unlock(hdev);
+
if (hdev->scan_rsp_data_len == len &&
!memcmp(cp.data, hdev->scan_rsp_data, len))
return 0;
@@ -1665,9 +1721,13 @@ static int hci_set_per_adv_data_sync(str
struct adv_info *adv = NULL;
if (instance) {
+ hci_dev_lock(hdev);
+
adv = hci_find_adv_instance(hdev, instance);
- if (!adv || !adv->periodic)
+ if (!adv || !adv->periodic) {
+ hci_dev_unlock(hdev);
return 0;
+ }
}
len = eir_create_per_adv_data(hdev, instance, pdu->data);
@@ -1676,6 +1736,9 @@ static int hci_set_per_adv_data_sync(str
pdu->handle = adv ? adv->handle : instance;
pdu->operation = LE_SET_ADV_DATA_OP_COMPLETE;
+ if (adv)
+ hci_dev_unlock(hdev);
+
return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_PER_ADV_DATA,
struct_size(pdu, data, len), pdu,
HCI_CMD_TIMEOUT);
@@ -6422,7 +6485,7 @@ static int hci_le_ext_directed_advertisi
if (err)
return err;
- err = hci_set_ext_adv_params_sync(hdev, NULL, &cp, &rp);
+ err = hci_set_ext_adv_params_sync(hdev, 0, &cp, &rp);
if (err)
return err;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 152/337] Bluetooth: HIDP: reject frames without a transaction header
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (149 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 151/337] Bluetooth: hci_sync: Fix advertising data UAFs Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 153/337] Bluetooth: HIDP: validate numbered report payloads Greg Kroah-Hartman
` (192 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sangho Lee, Luiz Augusto von Dentz
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sangho Lee <kudo3228@gmail.com>
commit 47778d2c2087b5d192398f6fddf692d16a5431cf upstream.
hidp_recv_ctrl_frame() and hidp_recv_intr_frame() read skb->data[0]
before checking that the L2CAP SDU contains a transaction header. A
connected HIDP peer can send an empty basic-mode SDU and make both paths
use an uninitialized byte from skb tailroom.
KMSAN reports the use in hidp_session_run(), with the uninitialized value
originating in __alloc_skb() through vhci_write(). The control path
produces two reports and the interrupt path produces one.
The byte can also be controlled by a malformed lower-layer packet. If an
HCI ACL packet contains an L2CAP PDU with a declared zero-length payload
followed by an extra 0x15 byte, l2cap_recv_acldata() reduces skb->len to
the declared PDU length before dispatch. The current HIDP path nevertheless
consumes the extra byte as HIDP_TRANS_HID_CONTROL |
HIDP_CTRL_VIRTUAL_CABLE_UNPLUG and terminates the HIDP session. With this
change, the same packet is discarded and a subsequent feature report
request succeeds.
Pull the transaction header with skb_pull_data() and discard frames that
do not contain it.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Sangho Lee <kudo3228@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/bluetooth/hidp/core.c | 25 +++++++++++++++----------
1 file changed, 15 insertions(+), 10 deletions(-)
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -563,16 +563,18 @@ static int hidp_process_data(struct hidp
static void hidp_recv_ctrl_frame(struct hidp_session *session,
struct sk_buff *skb)
{
- unsigned char hdr, type, param;
+ unsigned char type, param;
+ u8 *hdr;
int free_skb = 1;
BT_DBG("session %p skb %p len %u", session, skb, skb->len);
- hdr = skb->data[0];
- skb_pull(skb, 1);
+ hdr = skb_pull_data(skb, 1);
+ if (!hdr)
+ goto free;
- type = hdr & HIDP_HEADER_TRANS_MASK;
- param = hdr & HIDP_HEADER_PARAM_MASK;
+ type = *hdr & HIDP_HEADER_TRANS_MASK;
+ param = *hdr & HIDP_HEADER_PARAM_MASK;
switch (type) {
case HIDP_TRANS_HANDSHAKE:
@@ -593,6 +595,7 @@ static void hidp_recv_ctrl_frame(struct
break;
}
+free:
if (free_skb)
kfree_skb(skb);
}
@@ -600,14 +603,15 @@ static void hidp_recv_ctrl_frame(struct
static void hidp_recv_intr_frame(struct hidp_session *session,
struct sk_buff *skb)
{
- unsigned char hdr;
+ u8 *hdr;
BT_DBG("session %p skb %p len %u", session, skb, skb->len);
- hdr = skb->data[0];
- skb_pull(skb, 1);
+ hdr = skb_pull_data(skb, 1);
+ if (!hdr)
+ goto free;
- if (hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) {
+ if (*hdr == (HIDP_TRANS_DATA | HIDP_DATA_RTYPE_INPUT)) {
hidp_set_timer(session);
if (session->input)
@@ -619,9 +623,10 @@ static void hidp_recv_intr_frame(struct
BT_DBG("report len %d", skb->len);
}
} else {
- BT_DBG("Unsupported protocol header 0x%02x", hdr);
+ BT_DBG("Unsupported protocol header 0x%02x", *hdr);
}
+free:
kfree_skb(skb);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 153/337] Bluetooth: HIDP: validate numbered report payloads
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (150 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 152/337] Bluetooth: HIDP: reject frames without a transaction header Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 154/337] bpf: lwt: Fix dst reference leak on reroute failure Greg Kroah-Hartman
` (191 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sangho Lee, Luiz Augusto von Dentz
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sangho Lee <kudo3228@gmail.com>
commit 34f53d27b81a16a02828c8fdfa4e02badc326f17 upstream.
When hidp_get_raw_report() waits for a numbered report,
hidp_process_data() compares the expected report number with skb->data[0].
A connected HIDP peer can reply with only a DATA transaction header,
leaving the skb empty after the header is removed.
KMSAN reports an uninitialized-value use in hidp_session_run(), with the
value originating in __alloc_skb() through vhci_write(). The transaction
header checks remove the empty-frame reports, but this report remains until
the payload check is added.
The comparison can also consume a peer-controlled byte beyond the declared
L2CAP PDU. A DATA | FEATURE response followed by an extra 0x01 byte made
the current code accept that byte as report ID 1 and complete
HIDIOCGFEATURE with a zero-byte result. With this change the malformed
response is rejected with -EIO, while a subsequent valid response still
succeeds.
Require a payload byte before comparing a numbered report ID. Unnumbered
reports continue to accept an empty payload.
Fixes: 0ff1731a1ae5 ("HID: bt: Add support for hidraw HIDIOCGFEATURE and HIDIOCSFEATURE")
Cc: stable@vger.kernel.org
Signed-off-by: Sangho Lee <kudo3228@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/bluetooth/hidp/core.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -546,9 +546,10 @@ static int hidp_process_data(struct hidp
}
if (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags) &&
- param == session->waiting_report_type) {
+ param == session->waiting_report_type) {
if (session->waiting_report_number < 0 ||
- session->waiting_report_number == skb->data[0]) {
+ (skb->len &&
+ session->waiting_report_number == skb->data[0])) {
/* hidp_get_raw_report() is waiting on this report. */
session->report_return = skb;
done_with_skb = 0;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 154/337] bpf: lwt: Fix dst reference leak on reroute failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (151 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 153/337] Bluetooth: HIDP: validate numbered report payloads Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 155/337] ALSA: 6fire: Fix UAF at error handling during probe Greg Kroah-Hartman
` (190 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Xuanqiang Luo, Paolo Abeni
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
commit 88c17de85ddb459c3fe1e3c65d61fa366b1cf0a8 upstream.
bpf_lwt_xmit_reroute() obtains a referenced dst from the route
lookup. When skb_cow_head() fails before that dst is installed on the
skb, the error path only frees the skb. The skb still owns its previous
dst, so the newly looked up dst reference is leaked.
Release the new dst reference before freeing the skb on this error
path.
Fixes: 3bd0b15281af ("bpf: add handling of BPF_LWT_REROUTE to lwt_bpf.c")
Cc: stable@vger.kernel.org
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Link: https://patch.msgid.link/20260723060445.21926-1-xuanqiang.luo@linux.dev
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/core/lwt_bpf.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/net/core/lwt_bpf.c
+++ b/net/core/lwt_bpf.c
@@ -248,8 +248,10 @@ static int bpf_lwt_xmit_reroute(struct s
* if there is enough header space in skb.
*/
err = skb_cow_head(skb, LL_RESERVED_SPACE(dst->dev));
- if (unlikely(err))
+ if (unlikely(err)) {
+ dst_release(dst);
goto err;
+ }
skb_dst_drop(skb);
skb_dst_set(skb, dst);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 155/337] ALSA: 6fire: Fix UAF at error handling during probe
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (152 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 154/337] bpf: lwt: Fix dst reference leak on reroute failure Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 156/337] ALSA: lx6464es: fix period byte count for 16-bit streams Greg Kroah-Hartman
` (189 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Takashi Iwai, Shuangpeng Bai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@suse.de>
commit a54bf16965f896415c3337bc4fbb40fb11941d99 upstream.
Although 6fire driver had a few fixes for dealing with the early error
handling during the probe phase, it forgot a pending URB before
freeing the resources, which may lead to a UAF.
This patch addresses it by doing the almost same cleanup procedure
like the normal disconnect phase at the error path.
Reported-and-tested-by: Shuangpeng Bai <shuangpeng.kernel@gmail.com>
Closes: https://lore.kernel.org/20260724030900.1984491-1-shuangpeng.kernel@gmail.com
Cc: <stable@vger.kernel.org>
Link: https://patch.msgid.link/20260726074821.2288158-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/usb/6fire/chip.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/sound/usb/6fire/chip.c
+++ b/sound/usb/6fire/chip.c
@@ -158,6 +158,10 @@ static int usb6fire_chip_probe(struct us
return 0;
destroy_chip:
+ chip->shutdown = true;
+ if (card)
+ snd_card_disconnect(card);
+ usb6fire_chip_abort(chip);
snd_card_free(card);
return ret;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 156/337] ALSA: lx6464es: fix period byte count for 16-bit streams
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (153 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 155/337] ALSA: 6fire: Fix UAF at error handling during probe Greg Kroah-Hartman
@ 2026-08-07 14:35 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 157/337] ALSA: pcm: wake linked drain waiters on unlink Greg Kroah-Hartman
` (188 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:35 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Xu Rao, Takashi Iwai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xu Rao <raoxu@uniontech.com>
commit 6437033bffe8bd2af174d139af552d90d40c7ac6 upstream.
The lx6464es driver advertises both 16-bit and packed 24-bit PCM formats,
but lx_trigger_start() and lx_interrupt_request_new_buffer() calculate the
DMA period size as runtime->period_size * runtime->channels * 3. That is
only correct for the packed 24-bit formats.
For 16-bit streams the driver submits buffers that are 50% larger than the
actual ALSA period and advances the DMA address by the same wrong amount.
For example, with 2 channels, 256 frames and 4 periods, the third buffer
already extends beyond the ALSA buffer and the fourth buffer starts outside
it.
Use snd_pcm_lib_period_bytes() so the byte count matches the runtime
format, channel count and period size.
Fixes: 02bec4904508 ("ALSA: lx6464es - driver for the digigram lx6464es interface")
Cc: stable@vger.kernel.org
Signed-off-by: Xu Rao <raoxu@uniontech.com>
Link: https://patch.msgid.link/8BB12E8D92A7CDBA+20260723085710.2567463-1-raoxu@uniontech.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/pci/lx6464es/lx6464es.c | 5 +----
sound/pci/lx6464es/lx_core.c | 5 +----
2 files changed, 2 insertions(+), 8 deletions(-)
--- a/sound/pci/lx6464es/lx6464es.c
+++ b/sound/pci/lx6464es/lx6464es.c
@@ -410,11 +410,8 @@ static void lx_trigger_start(struct lx64
int err;
- const u32 channels = substream->runtime->channels;
- const u32 bytes_per_frame = channels * 3;
- const u32 period_size = substream->runtime->period_size;
const u32 periods = substream->runtime->periods;
- const u32 period_bytes = period_size * bytes_per_frame;
+ const u32 period_bytes = snd_pcm_lib_period_bytes(substream);
dma_addr_t buf = substream->dma_buffer.addr;
int i;
--- a/sound/pci/lx6464es/lx_core.c
+++ b/sound/pci/lx6464es/lx_core.c
@@ -1015,10 +1015,7 @@ static int lx_interrupt_request_new_buff
const unsigned int is_capture = lx_stream->is_capture;
int err;
- const u32 channels = substream->runtime->channels;
- const u32 bytes_per_frame = channels * 3;
- const u32 period_size = substream->runtime->period_size;
- const u32 period_bytes = period_size * bytes_per_frame;
+ const u32 period_bytes = snd_pcm_lib_period_bytes(substream);
const u32 pos = lx_stream->frame_pos;
const u32 next_pos = ((pos+1) == substream->runtime->periods) ?
0 : pos + 1;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 157/337] ALSA: pcm: wake linked drain waiters on unlink
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (154 preceding siblings ...)
2026-08-07 14:35 ` [PATCH 6.12 156/337] ALSA: lx6464es: fix period byte count for 16-bit streams Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 158/337] ALSA: seq: Fix division by zero in initialize_timer() Greg Kroah-Hartman
` (187 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Norbert Szetei, Takashi Iwai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Norbert Szetei <norbert@doyensec.com>
commit f495b6c4c8594122918552c9be2b51eb71647cd9 upstream.
snd_pcm_drain() on a linked stream parks an on-stack wait entry on the
drained peer's runtime->sleep, and after schedule_timeout() removes it
only if that peer is still found in the caller's group. If group
membership changes during the wait and the sleep ends by signal or
timeout (so autoremove_wake_function() does not run), finish_wait() is
skipped and snd_pcm_drain() returns with the entry still queued on that
stream's sleep list; a later wake_up() then walks a freed stack frame.
This is reachable by unlinking either the drained or the draining stream.
Unlike the close path (snd_pcm_drop() -> snd_pcm_post_stop()),
snd_pcm_unlink() never wakes the sleep queues. Wake every group member
under the group lock before the membership change, so a linked drainer is
released and drops its entry while the streams are still grouped.
The window was opened when snd_pcm_link_rwsem stopped being held across
the wait and the removal became conditional on group membership (see
Fixes). The later switch to finish_wait() kept that conditional removal,
so the signal/timeout case remained.
Fixes: f57f3df03a8e ("ALSA: pcm: More fine-grained PCM link locking")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-5
Signed-off-by: Norbert Szetei <norbert@doyensec.com>
Link: https://patch.msgid.link/A0705100-D10B-4286-9980-0142ABEEAD51@doyensec.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/pcm_native.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -2334,6 +2334,7 @@ static void relink_to_local(struct snd_p
static int snd_pcm_unlink(struct snd_pcm_substream *substream)
{
+ struct snd_pcm_substream *s;
struct snd_pcm_group *group;
bool nonatomic = substream->pcm->nonatomic;
bool do_free = false;
@@ -2346,6 +2347,12 @@ static int snd_pcm_unlink(struct snd_pcm
group = substream->group;
snd_pcm_group_lock_irq(group, nonatomic);
+ /* release drain waiters before changing membership, else snd_pcm_drain()
+ * leaves its on-stack wait entry queued on a member's sleep list
+ */
+ snd_pcm_group_for_each_entry(s, substream)
+ wake_up(&s->runtime->sleep);
+
relink_to_local(substream);
refcount_dec(&group->refs);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 158/337] ALSA: seq: Fix division by zero in initialize_timer()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (155 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 157/337] ALSA: pcm: wake linked drain waiters on unlink Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 159/337] ALSA: timer: Clear SNDRV_TIMER_IFLG_DEAD once the close completes Greg Kroah-Hartman
` (186 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Norbert Szetei, Takashi Iwai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Norbert Szetei <norbert@doyensec.com>
commit 21e19688433452dfbbbe6b2bb670dea6eb92f0f6 upstream.
A userspace-driven ALSA timer (SND_UTIMER) lets an unprivileged user set
the backing snd_timer's hardware resolution to an arbitrary 64-bit value
via SNDRV_TIMER_IOCTL_CREATE. snd_utimer_create() only rejects zero.
When such a timer is bound to a sequencer queue, initialize_timer()
computes the tick period as
tmr->ticks = 1000000000 / (r * freq);
where r is that user-controlled resolution and freq is the sequencer
update rate in Hz, clamped to MIN_FREQUENCY..MAX_FREQUENCY (10..6250).
A resolution of 2^63 makes the 64-bit product r * freq wrap to zero for
any even freq, including DEFAULT_FREQUENCY (1000), so the division faults
with a divide-by-zero.
The division runs under tmr->lock with interrupts disabled, so the oops
leaves the spinlock held and hangs the CPU. It is reachable by an
unprivileged user with access to /dev/snd/timer and /dev/snd/seq.
Oops: divide error: 0000 [#1] SMP KASAN PTI
CPU: 7 UID: 1000 PID: 456 Comm: alsa_seq_utimer Not tainted 7.2.0-rc4+
RIP: 0010:initialize_timer.constprop.0+0x20a/0x2d0
snd_seq_timer_start+0x15e/0x2b0
snd_seq_control_queue+0x56f/0xba0
snd_seq_write+0x3e0/0x730
Reject an overflowing product with check_mul_overflow() and fall back to
a single tick, which also avoids feeding a wrapped-but-nonzero divisor
(e.g. 2^63 * 1000 mod 2^64 == 0, or other resolutions wrapping to a small
value) into the period computation.
Fixes: 37745918e0e7 ("ALSA: timer: Introduce virtual userspace-driven timers")
Cc: <stable@vger.kernel.org>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Norbert Szetei <norbert@doyensec.com>
Link: https://patch.msgid.link/DF8A3844-AD5E-4B8A-9CFC-BD83C212BA38@doyensec.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/seq/seq_timer.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
--- a/sound/core/seq/seq_timer.c
+++ b/sound/core/seq/seq_timer.c
@@ -362,11 +362,10 @@ static int initialize_timer(struct snd_s
tmr->ticks = 1;
if (!(t->hw.flags & SNDRV_TIMER_HW_SLAVE)) {
unsigned long r = snd_timer_resolution(tmr->timeri);
- if (r) {
- tmr->ticks = (unsigned int)(1000000000uL / (r * freq));
- if (! tmr->ticks)
- tmr->ticks = 1;
- }
+ unsigned long den;
+
+ if (r && !check_mul_overflow(r, freq, &den))
+ tmr->ticks = max(1U, (unsigned int)(1000000000uL / den));
}
tmr->initialized = 1;
return 0;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 159/337] ALSA: timer: Clear SNDRV_TIMER_IFLG_DEAD once the close completes
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (156 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 158/337] ALSA: seq: Fix division by zero in initialize_timer() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 160/337] ALSA: ump: fix double free of out_cvts on rawmidi error Greg Kroah-Hartman
` (185 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Norbert Szetei, Takashi Iwai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Norbert Szetei <norbert@doyensec.com>
commit c2744d5f3aea474513fd2298daecb94a952ce441 upstream.
snd_timer_close_locked() marks an instance with SNDRV_TIMER_IFLG_DEAD
and returns early when the flag is already set, but the flag is never
cleared again. A completed close ends in remove_slave_links(), which
leaves timeri->timer NULL, so a second close is already harmless through
the timer == NULL path; the early return can only be reached by an
instance that was opened again in between. For such an instance the
close unlinks nothing, so snd_timer_instance_free() frees an object that
is still on timer->open_list_head, still on snd_timer_master_list if it
was opened with a slave key, still owns any adopted slaves, and still
holds its timer and module references.
snd_seq_timer_open() reopens an instance exactly like that: it retries
its fallback open on the same object after a failure that has already
run snd_timer_close_locked() internally. An unprivileged user with
access to /dev/snd/timer and /dev/snd/seq can force that failure, since
snd_timer_check_master() returns -EBUSY when a pending slave matches the
new master's (slave_class, slave_id) key and the target timer has
reached max_instances, and SNDRV_TIMER_IOCTL_SELECT with dev_class =
SNDRV_TIMER_CLASS_SLAVE keeps the caller-supplied dev_sclass, so a
sequencer queue's key can be forged. The freed instance is afterwards
dereferenced by any further snd_timer_open() on that timer, by
snd_timer_check_slave(), and by /proc/asound/timers, which faults on the
stale ti->owner pointer.
The flag only has to be visible while the close is in progress, which is
all its other users need. Clear it in remove_slave_links(), under the
same timer->lock that sets it, once the instance is off every list.
Fixes: da3039e91d1f ("ALSA: timer: Forcibly close timer instances at closing")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-5
Signed-off-by: Norbert Szetei <norbert@doyensec.com>
Link: https://patch.msgid.link/CA41AA48-75BF-45E9-A36D-3A5D2F124F60@doyensec.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/timer.c | 2 ++
1 file changed, 2 insertions(+)
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -409,6 +409,8 @@ static void remove_slave_links(struct sn
list_del_init(&slave->ack_list);
list_del_init(&slave->active_list);
}
+ /* the close is done; a reopen must not see the mark */
+ timeri->flags &= ~SNDRV_TIMER_IFLG_DEAD;
}
/*
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 160/337] ALSA: ump: fix double free of out_cvts on rawmidi error
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (157 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 159/337] ALSA: timer: Clear SNDRV_TIMER_IFLG_DEAD once the close completes Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 161/337] ASoC: tas2562: fix DVC coefficient write order Greg Kroah-Hartman
` (184 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Federico Kirschbaum, Baul Lee,
Takashi Iwai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Baul Lee <baul.lee@xbow.com>
commit 70c977815af0d997feb2d0c5d284d55689bf7051 upstream.
snd_ump_attach_legacy_rawmidi() allocates the legacy conversion array
ump->out_cvts and, on the snd_rawmidi_new() error path, frees it with
kfree() but leaves ump->out_cvts pointing at the freed memory. When the
endpoint is later torn down, snd_ump_endpoint_free() frees ump->out_cvts
a second time, resulting in a double free.
The host snd-usb-audio driver attaches the legacy rawmidi for any USB
MIDI 2.0 (UMP) device, so a device that makes snd_rawmidi_new() fail
reaches this path on enumeration.
Clear ump->out_cvts after freeing it on the error path so it is not
freed again during teardown.
Discovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>
Fixes: 33cd7630782d ("ALSA: ump: Export MIDI1 / UMP conversion helpers")
Reported-by: Federico Kirschbaum <federico.kirschbaum@xbow.com>
Reported-by: Baul Lee <baul.lee@xbow.com>
Cc: stable@vger.kernel.org
Signed-off-by: Baul Lee <baul.lee@xbow.com>
Link: https://patch.msgid.link/20260726051633.41206-1-baul.lee@xbow.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/core/ump.c | 1 +
1 file changed, 1 insertion(+)
--- a/sound/core/ump.c
+++ b/sound/core/ump.c
@@ -1297,6 +1297,7 @@ int snd_ump_attach_legacy_rawmidi(struct
&rmidi);
if (err < 0) {
kfree(ump->out_cvts);
+ ump->out_cvts = NULL;
return err;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 161/337] ASoC: tas2562: fix DVC coefficient write order
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (158 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 160/337] ALSA: ump: fix double free of out_cvts on rawmidi error Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 162/337] ASoC: tas2562: fix broken entries in the volume lookup table Greg Kroah-Hartman
` (183 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Haidar Lee, Mark Brown
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Haidar Lee <haidar.lee@adlinktech.com>
commit 8e957e4907c58e9ca944f98799524f2bbb9cf68a upstream.
The TAS2562 applies the 32-bit digital volume coefficient to the
playback path when the last byte, DVC_CFG4 (book 0 page 2 reg 0x0F), is
written. tas2562_volume_control_put() wrote DVC_CFG4 first and DVC_CFG1
(the MSB) last, so every volume change latched a value made of the
previous coefficient's upper three bytes combined with the new LSB; the
remaining bytes only took effect on the next volume change.
In practice the control was unusable: the first setting after power-on
always played at roughly 0 dB no matter what value was requested (the
chip's default upper bytes were still latched), and most subsequent
changes muted the output entirely or produced a distorted, over-unity
gain.
Verified on a TAS2562 (ADLINK OSM-520 / MT8189 board) by tracing the
I2C writes with ftrace and by writing the same coefficients manually in
both byte orders: written MSB-first the register block behaves exactly
as the driver expects, LSB-first reproduces the broken behaviour.
Write the bytes MSB first with DVC_CFG4 last so the complete new
coefficient is latched atomically.
Fixes: bf726b1c86f2 ("ASoC: tas2562: Add support for digital volume control")
Cc: stable@vger.kernel.org
Signed-off-by: Haidar Lee <haidar.lee@adlinktech.com>
Link: https://patch.msgid.link/20260715-tas2562-dvc-fix-v1-1-072b13901b20@adlinktech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/codecs/tas2562.c | 23 +++++++++++++++--------
1 file changed, 15 insertions(+), 8 deletions(-)
--- a/sound/soc/codecs/tas2562.c
+++ b/sound/soc/codecs/tas2562.c
@@ -475,20 +475,27 @@ static int tas2562_volume_control_put(st
u32 reg_val;
reg_val = float_vol_db_lookup[ucontrol->value.integer.value[0]/2];
- ret = snd_soc_component_write(component, TAS2562_DVC_CFG4,
- (reg_val & 0xff));
- if (ret)
- return ret;
- ret = snd_soc_component_write(component, TAS2562_DVC_CFG3,
- ((reg_val >> 8) & 0xff));
+ /*
+ * The device applies the 32-bit coefficient to the playback path on
+ * the write to DVC_CFG4 (the LSB, book 0 page 2 reg 0x0F), so the
+ * bytes must be written MSB first and DVC_CFG4 last. Writing CFG4
+ * first latches a mix of the previous coefficient's upper bytes and
+ * the new LSB instead of the requested value.
+ */
+ ret = snd_soc_component_write(component, TAS2562_DVC_CFG1,
+ ((reg_val >> 24) & 0xff));
if (ret)
return ret;
ret = snd_soc_component_write(component, TAS2562_DVC_CFG2,
((reg_val >> 16) & 0xff));
if (ret)
return ret;
- ret = snd_soc_component_write(component, TAS2562_DVC_CFG1,
- ((reg_val >> 24) & 0xff));
+ ret = snd_soc_component_write(component, TAS2562_DVC_CFG3,
+ ((reg_val >> 8) & 0xff));
+ if (ret)
+ return ret;
+ ret = snd_soc_component_write(component, TAS2562_DVC_CFG4,
+ (reg_val & 0xff));
if (ret)
return ret;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 162/337] ASoC: tas2562: fix broken entries in the volume lookup table
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (159 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 161/337] ASoC: tas2562: fix DVC coefficient write order Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 163/337] ata: libata-eh: Increase STANDBY IMMEDIATE timeout Greg Kroah-Hartman
` (182 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Haidar Lee, Mark Brown
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Haidar Lee <haidar.lee@adlinktech.com>
commit bdb0fd6de403fcea7b85dc9d38f0a571583ebe80 upstream.
The float_vol_db_lookup table is supposed to hold
round(10^(dB/20) * 2^30) for every 2 dB step from -110 dB to 0 dB,
which is 56 entries, but it only has 55: the -90 dB entry duplicates
the -92 dB value (0x0000695b) and the -20 dB entry (0x06666666) is
missing altogether. As a result every step between -90 dB and -22 dB
is off by 2 dB, and the control's maximum raw value of 110 indexes one
element past the end of the array.
Replace the duplicated -90 dB entry with the correct value 0x000084a3
and add the missing -20 dB entry, bringing the table to the full 56
entries so index 55 (raw value 110, 0 dB) is in range again.
Fixes: bf726b1c86f2 ("ASoC: tas2562: Add support for digital volume control")
Cc: stable@vger.kernel.org
Signed-off-by: Haidar Lee <haidar.lee@adlinktech.com>
Link: https://patch.msgid.link/20260715-tas2562-dvc-fix-v1-2-072b13901b20@adlinktech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/codecs/tas2562.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/sound/soc/codecs/tas2562.c
+++ b/sound/soc/codecs/tas2562.c
@@ -32,15 +32,16 @@
static const unsigned int float_vol_db_lookup[] = {
0x00000d43, 0x000010b2, 0x00001505, 0x00001a67, 0x00002151,
0x000029f1, 0x000034cd, 0x00004279, 0x000053af, 0x0000695b,
-0x0000695b, 0x0000a6fa, 0x0000d236, 0x000108a4, 0x00014d2a,
+0x000084a3, 0x0000a6fa, 0x0000d236, 0x000108a4, 0x00014d2a,
0x0001a36e, 0x00021008, 0x000298c0, 0x000344df, 0x00041d8f,
0x00052e5a, 0x000685c8, 0x00083621, 0x000a566d, 0x000d03a7,
0x0010624d, 0x0014a050, 0x0019f786, 0x0020b0bc, 0x0029279d,
0x0033cf8d, 0x004139d3, 0x00521d50, 0x00676044, 0x0082248a,
0x00a3d70a, 0x00ce4328, 0x0103ab3d, 0x0146e75d, 0x019b8c27,
0x02061b89, 0x028c423f, 0x03352529, 0x0409c2b0, 0x05156d68,
-0x080e9f96, 0x0a24b062, 0x0cc509ab, 0x10137987, 0x143d1362,
-0x197a967f, 0x2013739e, 0x28619ae9, 0x32d64617, 0x40000000
+0x06666666, 0x080e9f96, 0x0a24b062, 0x0cc509ab, 0x10137987,
+0x143d1362, 0x197a967f, 0x2013739e, 0x28619ae9, 0x32d64617,
+0x40000000
};
struct tas2562_data {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 163/337] ata: libata-eh: Increase STANDBY IMMEDIATE timeout
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (160 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 162/337] ASoC: tas2562: fix broken entries in the volume lookup table Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 164/337] ata: libata-sata: fix ata_scsi_lpm_supported() iteration Greg Kroah-Hartman
` (181 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Matt Vollrath, Damien Le Moal
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matt Vollrath <tactii@gmail.com>
commit 1e024d2b41ee32bc06818f7f09a3562c58842cf9 upstream.
Correct a previous change (see Fixes) which reduced the standby timeout
from 30 to 5 seconds. Increase it to 15 seconds.
I was troubleshooting an error spotted during system suspend:
[ 1217.152867] ata1.00: Entering standby power mode
[ 1222.322948] ata1.00: qc timeout after 5000 msecs (cmd 0xe0)
[ 1222.324010] ata1.00: STANDBY IMMEDIATE failed (err_mask=0x4)
This drive is a Samsung 870 EVO SSD in good SMART standing, and I wasn't
aware of any reason it should be taking so long to standby. The issue is
intermittent, but I observed it sometimes taking 7 seconds to manually
standby. I assume this was interruption of background maintenance after
a power outage.
As a desktop user, I would prefer to wait the extra 2 seconds at suspend
to let the drive finish its business rather than drop the rails from
under it.
The change from 30 to 5 seconds was implicit when switching suspend
from START STOP UNIT to an internal command with no timeout table entry.
No reason was stated for the change.
Fixes: aa3998dbeb3a ("ata: libata-scsi: Disable scsi device manage_system_start_stop")
Cc: stable@vger.kernel.org
Signed-off-by: Matt Vollrath <tactii@gmail.com>
Assisted-by: Claude:claude-5-fable
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/ata/libata-eh.c | 8 ++++++++
include/linux/libata.h | 2 +-
2 files changed, 9 insertions(+), 1 deletion(-)
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -106,6 +106,12 @@ static const unsigned int ata_eh_flush_t
UINT_MAX,
};
+static const unsigned int ata_eh_standby_timeouts[] = {
+ 15000, /* Some drives may be slow to standby */
+ /* but don't hold up a suspend too long waiting for them */
+ UINT_MAX,
+};
+
static const unsigned int ata_eh_other_timeouts[] = {
5000, /* same rationale as identify timeout */
10000, /* ditto */
@@ -147,6 +153,8 @@ ata_eh_cmd_timeout_table[ATA_EH_CMD_TIME
.timeouts = ata_eh_other_timeouts, },
{ .commands = CMDS(ATA_CMD_FLUSH, ATA_CMD_FLUSH_EXT),
.timeouts = ata_eh_flush_timeouts },
+ { .commands = CMDS(ATA_CMD_STANDBYNOW1),
+ .timeouts = ata_eh_standby_timeouts },
{ .commands = CMDS(ATA_CMD_VERIFY),
.timeouts = ata_eh_reset_timeouts },
};
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -402,7 +402,7 @@ enum {
/* This should match the actual table size of
* ata_eh_cmd_timeout_table in libata-eh.c.
*/
- ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 8,
+ ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 9,
/*
* Quirk flags: may be set by libata or controller drivers on drives.
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 164/337] ata: libata-sata: fix ata_scsi_lpm_supported() iteration
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (161 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 163/337] ata: libata-eh: Increase STANDBY IMMEDIATE timeout Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 165/337] ALSA: usb-audio: fix use-after-free in ump_to_endpoint() Greg Kroah-Hartman
` (180 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sashiko, Niklas Cassel,
Damien Le Moal
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Niklas Cassel <cassel@kernel.org>
commit 3fd70e96914d761c17c376aadd0b0d1a3c9badba upstream.
The inner loop of ata_scsi_lpm_supported() uses the wrong variable when
iterating.
It should obviously use the link that we are currently iterating over,
rather than always using the host link.
ata_scsi_lpm_supported() is used to control if a user should be allowed
to change lpm policy (from the default) via sysfs.
Thus, this bug could potentially disallow users to change the LPM policy
for certain SATA devices via sysfs.
Cc: stable@vger.kernel.org
Fixes: 0060beec0bfa ("ata: libata-sata: Add link_power_management_supported sysfs attribute")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Link: https://lore.kernel.org/linux-ide/20260728112200.B99F21F000E9@smtp.kernel.org/
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/ata/libata-sata.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index b0706c30da05..ad40f516c6d4 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -913,7 +913,7 @@ static bool ata_scsi_lpm_supported(struct ata_port *ap)
return false;
ata_for_each_link(link, ap, EDGE) {
- ata_for_each_dev(dev, &ap->link, ENABLED) {
+ ata_for_each_dev(dev, link, ENABLED) {
if (dev->quirks & ATA_QUIRK_NOLPM)
return false;
}
--
2.55.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 165/337] ALSA: usb-audio: fix use-after-free in ump_to_endpoint()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (162 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 164/337] ata: libata-sata: fix ata_scsi_lpm_supported() iteration Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 166/337] ALSA: usb-audio: fix stack info leak in RME Digiface status Greg Kroah-Hartman
` (179 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Federico Kirschbaum, Baul Lee,
Takashi Iwai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Baul Lee <baul.lee@xbow.com>
commit 4a05b2d1b4642df74f30b6f54843e825c4a2bfd3 upstream.
create_midi2_ump() registers a card-owned snd_ump_endpoint and stores a
back-pointer to its per-interface snd_usb_midi2_ump object in
ump->private_data, but it never installs an ump->private_free hook and
never clears that pointer.
If a later step of snd_usb_midi_v2_create() fails, its error path calls
free_all_midi2_umps(), which kfree()s the snd_usb_midi2_ump object while
the already-registered endpoint keeps pointing at it. The created
/dev/snd/umpC*D* node stays exposed, so the first operation of any UMP
open, ump_to_endpoint(), dereferences the dangling ump->private_data and
reads rmidi->eps[dir] out of freed memory.
A malicious USB MIDI 2.0 device that makes creation fail after the
endpoint is registered can thus trigger a slab use-after-free read on a
subsequent open of the UMP node.
Clear the endpoint's back-pointer before freeing the object, and let
ump_to_endpoint() tolerate a NULL private_data so the open/close/trigger
callbacks fail cleanly (their callers already handle a NULL endpoint)
instead of dereferencing a stale pointer.
Discovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>
Fixes: ff49d1df79ae ("ALSA: usb-audio: USB MIDI 2.0 UMP support")
Reported-by: Federico Kirschbaum <federico.kirschbaum@xbow.com>
Reported-by: Baul Lee <baul.lee@xbow.com>
Cc: stable@vger.kernel.org
Signed-off-by: Baul Lee <baul.lee@xbow.com>
Link: https://patch.msgid.link/20260726051337.41124-1-baul.lee@xbow.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/usb/midi2.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/sound/usb/midi2.c
+++ b/sound/usb/midi2.c
@@ -337,7 +337,7 @@ ump_to_endpoint(struct snd_ump_endpoint
{
struct snd_usb_midi2_ump *rmidi = ump->private_data;
- return rmidi->eps[dir];
+ return rmidi ? rmidi->eps[dir] : NULL;
}
/* ump open callback */
@@ -693,6 +693,8 @@ static void free_all_midi2_umps(struct s
rmidi = list_first_entry(&umidi->rawmidi_list,
struct snd_usb_midi2_ump, list);
list_del(&rmidi->list);
+ if (rmidi->ump)
+ rmidi->ump->private_data = NULL;
kfree(rmidi);
}
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 166/337] ALSA: usb-audio: fix stack info leak in RME Digiface status
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (163 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 165/337] ALSA: usb-audio: fix use-after-free in ump_to_endpoint() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 167/337] ALSA: usb-audio: fix OOB write in snd_usbmidi_akai_output() Greg Kroah-Hartman
` (178 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Federico Kirschbaum, Baul Lee,
Takashi Iwai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Baul Lee <baul.lee@xbow.com>
commit 441aaad150c57edaf57ee482a79a3bf4c5b7e353 upstream.
snd_rme_digiface_read_status() reads a four-word status block from the
device into an uninitialised on-stack __le32 buf[4] and, whenever the
vendor control-IN transfer does not return a negative error, copies all
four words into the caller's status[].
snd_usb_ctl_msg() copies the full requested size back into the caller's
buffer regardless of how many bytes the data stage actually delivered:
buf = kmemdup(data, size, GFP_KERNEL);
err = usb_control_msg(dev, pipe, request, requesttype,
value, index, buf, size, timeout);
memcpy(data, buf, size);
usb_control_msg() returns the transferred length on a short control-IN,
which is a non-negative value, and writes only that many bytes. The
remainder of the copy back is the kmemdup()ed image of the caller's
buffer, so a device answering with a short data stage leaves the
trailing words of buf[] holding leftover kernel stack. The only guard
in the caller is err < 0, so those words are stored into status[].
They then reach user space: snd_rme_digiface_get_status_val() selects a
16-bit halfword of status[] per the control's reg/mask, and the eight
Digiface status controls together expose the whole 16-byte frame to an
unprivileged reader of /dev/snd/controlC*.
Zero-initialise the buffer so a short read yields zeros instead of stack
residue. This mirrors snd_rme_get_status1(), which already clears its
output word before the same kind of vendor read.
Discovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>
Fixes: 611a96f6acf2 ("ALSA: usb-audio: Add mixer quirk for RME Digiface USB")
Reported-by: Federico Kirschbaum <federico.kirschbaum@xbow.com>
Reported-by: Baul Lee <baul.lee@xbow.com>
Cc: stable@vger.kernel.org
Signed-off-by: Baul Lee <baul.lee@xbow.com>
Link: https://patch.msgid.link/20260726065020.46070-1-baul.lee@xbow.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/usb/mixer_quirks.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -3413,7 +3413,7 @@ static int snd_rme_digiface_read_status(
struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
struct snd_usb_audio *chip = list->mixer->chip;
struct usb_device *dev = chip->dev;
- __le32 buf[4];
+ __le32 buf[4] = {};
int err;
err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 167/337] ALSA: usb-audio: fix OOB write in snd_usbmidi_akai_output()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (164 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 166/337] ALSA: usb-audio: fix stack info leak in RME Digiface status Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 168/337] ALSA: usb-audio: Fix DMA buffer out-of-bounds write when fill_max is set Greg Kroah-Hartman
` (177 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Takashi Iwai, Federico Kirschbaum,
Baul Lee
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Baul Lee <baul.lee@xbow.com>
commit 0970274613fb463d376211450cab066d34ebfe6a upstream.
snd_usbmidi_akai_output() computes its fill-loop bound
buf_end = ep->max_transfer - MAX_AKAI_SYSEX_LEN - 1;
as a signed int, so a small device-advertised bulk-OUT max_transfer
makes buf_end negative. The loop guard then compares the u32
urb->transfer_buffer_length against that negative int: the usual
arithmetic conversion turns buf_end into a large unsigned value, so the
guard stays true and each iteration keeps appending SysEx framing and
payload bytes past the end of the URB transfer buffer, which is only
max_transfer bytes long.
A USB device that advertises a tiny bulk-OUT endpoint can therefore
trigger an attacker-length- and content-controlled heap out-of-bounds
write when a process writes to the created /dev/snd/midiC*D* node.
Return early when there is no room for even one SysEx, so the loop is
never entered with a bound that would wrap. The loop is the last
statement of the function, so bailing out is equivalent to it not
running.
Discovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>
Fixes: 4434ade8c933 ("ALSA: usb-audio: add support for Akai MPD16")
Suggested-by: Takashi Iwai <tiwai@suse.de>
Reported-by: Federico Kirschbaum <federico.kirschbaum@xbow.com>
Reported-by: Baul Lee <baul.lee@xbow.com>
Cc: stable@vger.kernel.org
Signed-off-by: Baul Lee <baul.lee@xbow.com>
Link: https://patch.msgid.link/20260726074500.50145-1-baul.lee@xbow.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/usb/midi.c | 2 ++
1 file changed, 2 insertions(+)
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -800,6 +800,8 @@ static void snd_usbmidi_akai_output(stru
msg = urb->transfer_buffer + urb->transfer_buffer_length;
buf_end = ep->max_transfer - MAX_AKAI_SYSEX_LEN - 1;
+ if (buf_end <= 0)
+ return;
/* only try adding more data when there's space for at least 1 SysEx */
while (urb->transfer_buffer_length < buf_end) {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 168/337] ALSA: usb-audio: Fix DMA buffer out-of-bounds write when fill_max is set
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (165 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 167/337] ALSA: usb-audio: fix OOB write in snd_usbmidi_akai_output() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 169/337] ALSA: usb-audio: Clamp frame size in implicit-feedback mode Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sonali Pradhan, Takashi Iwai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sonali Pradhan <sonalipradhan@google.com>
commit d0199ae1666ff9ae2d1d568d64c3430d4c47f0e5 upstream.
When a USB audio endpoint requests full packet transfers via the fill_max
descriptor flag, data_ep_set_params() promotes ep->curpacksize to
ep->maxpacksize. However, maxsize is left at the original sample-rate
derived value.
Since u->buffer_size is allocated as maxsize * packets, the resulting
DMA buffer is far too small for the requested transfer length. When the
USB host controller streams up to curpacksize bytes per packet, it writes
past the end of the buffer via DMA, corrupting kernel heap memory.
Update maxsize to curpacksize when fill_max is set so that the allocated
DMA buffer size matches the actual transfer request size.
[ changed to reassign maxsize only when ep->fill_max is set -- tiwai ]
Fixes: 8fdff6a319e7 ("ALSA: snd-usb: implement new endpoint streaming model")
Cc: stable@vger.kernel.org
Assisted-by: Jetski:Gemini-3.6-Flash
Signed-off-by: Sonali Pradhan <sonalipradhan@google.com>
Link: https://patch.msgid.link/20260728201716.2347726-1-sonalipradhan@google.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/usb/endpoint.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -1188,10 +1188,12 @@ static int data_ep_set_params(struct snd
<< (16 - ep->datainterval);
}
- if (ep->fill_max)
+ if (ep->fill_max) {
ep->curpacksize = ep->maxpacksize;
- else
+ maxsize = ep->curpacksize;
+ } else {
ep->curpacksize = maxsize;
+ }
if (snd_usb_get_speed(chip->dev) != USB_SPEED_FULL) {
packs_per_ms = 8 >> ep->datainterval;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 169/337] ALSA: usb-audio: Clamp frame size in implicit-feedback mode
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (166 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 168/337] ALSA: usb-audio: Fix DMA buffer out-of-bounds write when fill_max is set Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 170/337] dmaengine: qcom: bam_dma: Fix command element mask field for BAM v1.6.0+ Greg Kroah-Hartman
` (175 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Sonali Pradhan, Takashi Iwai
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sonali Pradhan <sonalipradhan@google.com>
commit 8d7a30c50c2e58a6839634ed0acde14466d1dc61 upstream.
snd_usb_handle_sync_urb() scales received sync packet sizes by the sender's
stride and stores the result directly in out_packet->packet_size[i]. If a
connected USB device sends an oversized sync packet, this frame count can
exceed ep->maxframesize.
The un-clamped frame count then propagates to the playback endpoint queue,
potentially driving packet transfers beyond the endpoint's hardware frame
limits.
Cap the calculated frame count against ep->maxframesize in
snd_usb_handle_sync_urb() to prevent oversized packets from entering the
playback queue.
Fixes: 28acb12014fb ("ALSA: usb-audio: use sender stride for implicit feedback")
Cc: stable@vger.kernel.org
Assisted-by: Jetski:Gemini-3.6-Flash
Signed-off-by: Sonali Pradhan <sonalipradhan@google.com>
Link: https://patch.msgid.link/20260728202432.2354994-1-sonalipradhan@google.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/usb/endpoint.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -1837,11 +1837,13 @@ static void snd_usb_handle_sync_urb(stru
out_packet->packets = in_ctx->packets;
for (i = 0; i < in_ctx->packets; i++) {
- if (urb->iso_frame_desc[i].status == 0)
- out_packet->packet_size[i] =
+ if (urb->iso_frame_desc[i].status == 0) {
+ unsigned int frames =
urb->iso_frame_desc[i].actual_length / sender->stride;
- else
+ out_packet->packet_size[i] = min(frames, ep->maxframesize);
+ } else {
out_packet->packet_size[i] = 0;
+ }
}
spin_unlock_irqrestore(&ep->lock, flags);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 170/337] dmaengine: qcom: bam_dma: Fix command element mask field for BAM v1.6.0+
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (167 preceding siblings ...)
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@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 171/337] e1000: fix memory leak in e1000_probe() Greg Kroah-Hartman
` (174 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lakshmi Sowjanya D, Md Sadre Alam,
Frank Li, Dmitry Baryshkov, Varadarajan Narayanan, Vinod Koul
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Md Sadre Alam <md.alam@oss.qualcomm.com>
commit 867621ba203027338b525af6729719c544135336 upstream.
BAM version 1.6.0 and later changed the behavior of the mask field in
command elements for read operations.
In older BAM versions, or prior implementation assumptions, the mask
field was effectively ignored for read commands. However, starting from
BAM v1.6.0, the mask field for read commands is repurposed to carry the
upper 4 bits of the destination address, enabling support for 36-bit
addressing. For write commands, the mask field continues to function as
a traditional write mask.
The current driver sets mask = 0xffffffff for all command elements.
While this works for write operations, it breaks read operations on
BAM v1.6.0+ hardware. In such cases, the hardware interprets the upper
address bits as 0xf, resulting in an invalid destination address
(0xf_xxxxxxxx instead of 0x0_xxxxxxxx).
This leads to failures such as NAND enumeration issues observed on
platforms like IPQ5424.
Fix this by assigning the mask field based on command type:
- For read commands: set mask = 0 (upper address bits = 0)
- For write commands: retain mask = 0xffffffff
Also update the bam_cmd_element structure documentation to reflect the
dual purpose of the mask field across BAM versions.
This ensures correct behavior on BAM v1.6.0+ while maintaining backward
compatibility with older hardware.
Fixes: dfebb055f73a2 ("dmaengine: qcom: bam_dma: wrapper functions for command descriptor")
Tested-by: Lakshmi Sowjanya D <lakshmi.d@oss.qualcomm.com>
Signed-off-by: Md Sadre Alam <md.alam@oss.qualcomm.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Varadarajan Narayanan <varadarajan.narayanan@oss.qualcomm.com>
Link: https://patch.msgid.link/20260615060908.1263171-1-varadarajan.narayanan@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/linux/dma/qcom_bam_dma.h | 21 ++++++++++++++++-----
1 file changed, 16 insertions(+), 5 deletions(-)
--- a/include/linux/dma/qcom_bam_dma.h
+++ b/include/linux/dma/qcom_bam_dma.h
@@ -13,9 +13,12 @@
* supported by BAM DMA Engine.
*
* @cmd_and_addr - upper 8 bits command and lower 24 bits register address.
- * @data - for write command: content to be written into peripheral register.
- * for read command: dest addr to write peripheral register value.
- * @mask - register mask.
+ * @data - For write command: content to be written into peripheral register.
+ * For read command: lower 32 bits of destination address.
+ * @mask - For write command: register write mask.
+ * For read command on BAM v1.6.0+: upper 4 bits of destination address.
+ * For read command on BAM < v1.6.0: ignored by hardware.
+ * Setting to 0 ensures 32-bit addressing compatibility.
* @reserved - for future usage.
*
*/
@@ -42,6 +45,10 @@ enum bam_command_type {
* @addr: target address
* @cmd: BAM command
* @data: actual data for write and dest addr for read in le32
+ *
+ * For BAM v1.6.0+, the mask field behavior depends on command type:
+ * - Write commands: mask = write mask (typically 0xffffffff)
+ * - Read commands: mask = upper 4 bits of destination address (0 for 32-bit)
*/
static inline void
bam_prep_ce_le32(struct bam_cmd_element *bam_ce, u32 addr,
@@ -50,7 +57,11 @@ bam_prep_ce_le32(struct bam_cmd_element
bam_ce->cmd_and_addr =
cpu_to_le32((addr & 0xffffff) | ((cmd & 0xff) << 24));
bam_ce->data = data;
- bam_ce->mask = cpu_to_le32(0xffffffff);
+ if (cmd == BAM_READ_COMMAND)
+ bam_ce->mask = cpu_to_le32(0x0); /* 32-bit addressing */
+ else
+ bam_ce->mask = cpu_to_le32(0xffffffff); /* Write mask */
+ bam_ce->reserved = 0;
}
/*
@@ -60,7 +71,7 @@ bam_prep_ce_le32(struct bam_cmd_element
* @bam_ce: BAM command element
* @addr: target address
* @cmd: BAM command
- * @data: actual data for write and dest addr for read
+ * @data: actual data for write and destination address for read
*/
static inline void
bam_prep_ce(struct bam_cmd_element *bam_ce, u32 addr,
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 171/337] e1000: fix memory leak in e1000_probe()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (168 preceding siblings ...)
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@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 172/337] igbvf: Fix leak in TX DMA error cleanup Greg Kroah-Hartman
` (173 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zilin Guan, Dawei Feng,
Dima Ruinskiy, Tony Nguyen
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dawei Feng <dawei.feng@seu.edu.cn>
commit 816419dfea5c88126f35eb7a1b429a1bf546665e upstream.
In the e1000_probe() path, e1000_sw_init() allocates adapter->tx_ring and
adapter->rx_ring. If the subsequent CE4100-specific MDIO BAR mapping
fails, the error handling jumps past the ring cleanup code, leaking both
allocations.
Fix this leak by moving the err_mdio_ioremap label above the ring
deallocation logic. This guarantees the proper release of these resources
and prevents the memory leak.
The bug was first flagged by an experimental analysis tool we are
developing for kernel memory-management bugs while analyzing
v6.13-rc1. The tool is still under development and is not yet publicly
available. Manual inspection confirms that the bug is still
present in v7.1-rc6.
An x86_64 allyesconfig build showed no new warnings. As we do not have a
CE4100 reference platform to test with, no runtime testing was able to
be performed.
Fixes: 5377a4160bb65 ("e1000: Add support for the CE4100 reference platform")
Cc: stable@vger.kernel.org
Signed-off-by: Zilin Guan <zilin@seu.edu.cn>
Signed-off-by: Dawei Feng <dawei.feng@seu.edu.cn>
Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/e1000/e1000_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
@@ -1225,11 +1225,11 @@ err_eeprom:
if (hw->flash_address)
iounmap(hw->flash_address);
+err_mdio_ioremap:
kfree(adapter->tx_ring);
kfree(adapter->rx_ring);
err_dma:
err_sw_init:
-err_mdio_ioremap:
iounmap(hw->ce4100_gbe_mdio_base_virt);
iounmap(hw->hw_addr);
err_ioremap:
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 172/337] igbvf: Fix leak in TX DMA error cleanup
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (169 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 171/337] e1000: fix memory leak in e1000_probe() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 173/337] ipvs: do not propagate one-packet flag to synced conns Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Matt Vollrath, Tony Nguyen
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matt Vollrath <tactii@gmail.com>
commit 0565052b7e2f436b7f1541f4849da96dc0aa7a0e upstream.
If an error is encountered while mapping TX buffers, the driver should
unmap any buffers already mapped for that skb.
Because count is incremented before each frag mapping, it will always
match the correct number of unmappings needed when dma_error is reached.
Decrementing count before the while loop in dma_error causes an
off-by-one error. If any mapping was successful before an unsuccessful
mapping, exactly one DMA mapping (the head) would leak.
This bug was introduced by a 2010 fix for an endless loop in dma_error.
All other affected drivers have already been fixed.
Fixes: c1fa347f20f1 ("e1000/e1000e/igb/igbvf/ixgb/ixgbe: Fix tests of unsigned in *_tx_map()")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-4-7-opus
Signed-off-by: Matt Vollrath <tactii@gmail.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/igbvf/netdev.c | 2 --
1 file changed, 2 deletions(-)
--- a/drivers/net/ethernet/intel/igbvf/netdev.c
+++ b/drivers/net/ethernet/intel/igbvf/netdev.c
@@ -2201,8 +2201,6 @@ dma_error:
buffer_info->time_stamp = 0;
buffer_info->length = 0;
buffer_info->mapped_as_page = false;
- if (count)
- count--;
/* clear timestamp and dma mappings for remaining portion of packet */
while (count--) {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 173/337] ipvs: do not propagate one-packet flag to synced conns
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (170 preceding siblings ...)
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@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 174/337] net/smc: fix socket use-after-free during link group termination Greg Kroah-Hartman
` (171 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Yuan Tan, Yifan Wu, Juefei Pu,
Xin Liu, Julian Anastasov, Zhiling Zou, Ren Wei,
Pablo Neira Ayuso
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhiling Zou <roxy520tt@gmail.com>
commit a63d2dbaeb50a85d4c976b15a36e6b0c7113db5b upstream.
Synced connections can be created before their destination exists. When
the destination is later added, ip_vs_bind_dest() copies connection flags
from the destination into cp->flags.
IP_VS_CONN_F_ONE_PACKET connections are not synced. If a synced
connection inherits IP_VS_CONN_F_ONE_PACKET while it is already hashed,
expiry can treat it as a one-packet connection and skip unlinking the
existing conn_tab node, leaving stale hash nodes pointing at a freed
struct ip_vs_conn.
Drop IP_VS_CONN_F_ONE_PACKET from destination flags when binding synced
connections.
Fixes: 26ec037f9841 ("IPVS: one-packet scheduling")
Cc: stable@vger.kernel.org
Reported-by: Yuan Tan <yuantan098@gmail.com>
Reported-by: Yifan Wu <yifanwucs@gmail.com>
Reported-by: Juefei Pu <tomapufckgml@gmail.com>
Reported-by: Xin Liu <bird@lzu.edu.cn>
Suggested-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Zhiling Zou <roxy520tt@gmail.com>
Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netfilter/ipvs/ip_vs_conn.c | 3 +++
1 file changed, 3 insertions(+)
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -599,6 +599,9 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, s
flags = cp->flags;
/* Bind with the destination and its corresponding transmitter */
if (flags & IP_VS_CONN_F_SYNC) {
+ /* Synced conns are hashed, so they can not get this flag */
+ conn_flags &= ~IP_VS_CONN_F_ONE_PACKET;
+
/* if the connection is not template and is created
* by sync, preserve the activity flag.
*/
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 174/337] net/smc: fix socket use-after-free during link group termination
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (171 preceding siblings ...)
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@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 175/337] netfilter: ipset: do not update comments from kernel-side hash adds Greg Kroah-Hartman
` (170 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Xuanqiang Luo, Mahanta Jambigi,
Paolo Abeni
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
commit f621d6ebeebb6374342571e4ddf45fdbc420f6cd upstream.
__smc_lgr_terminate() drops conns_lock after finding a connection in
lgr->conns_all, but before taking a reference on its socket. The connection
is embedded in the socket, and its registration reference protects it only
while the connection remains in the tree.
A concurrent close can unregister the connection and drop that reference,
freeing the socket before the termination worker reaches sock_hold().
The race is reachable when close overlaps link group termination.
Local stress testing reproduced the use-after-free and KASAN reported:
BUG: KASAN: slab-use-after-free in __smc_lgr_terminate.part.0 [smc]
Write of size 4 by task kworker/3:3
Workqueue: events smc_lgr_terminate_work [smc]
__smc_lgr_terminate.part.0 [smc]
The socket was allocated by smc_create(), freed through
slab_free_after_rcu_debug(), and was followed by:
refcount_t: addition on 0; use-after-free.
__smc_lgr_terminate.part.0 [smc]
Take the socket reference while conns_lock still protects the tree entry.
The unregister path then cannot drop the last reference until termination
has finished using the socket.
Fixes: 69318b5215f2 ("net/smc: improve abnormal termination locking")
Cc: stable@vger.kernel.org
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Reviewed-by: Mahanta Jambigi <mjambigi@linux.ibm.com>
Link: https://patch.msgid.link/20260723105454.87016-1-xuanqiang.luo@linux.dev
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/smc/smc_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1553,10 +1553,10 @@ static void __smc_lgr_terminate(struct s
read_lock_bh(&lgr->conns_lock);
node = rb_first(&lgr->conns_all);
while (node) {
- read_unlock_bh(&lgr->conns_lock);
conn = rb_entry(node, struct smc_connection, alert_node);
smc = container_of(conn, struct smc_sock, conn);
sock_hold(&smc->sk); /* sock_put below */
+ read_unlock_bh(&lgr->conns_lock);
lock_sock(&smc->sk);
smc_conn_kill(conn, soft);
release_sock(&smc->sk);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 175/337] netfilter: ipset: do not update comments from kernel-side hash adds
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (172 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 174/337] net/smc: fix socket use-after-free during link group termination Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 176/337] tipc: avoid use-after-free in poll trace queue dumps Greg Kroah-Hartman
` (169 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Lee, Jozsef Kadlecsik,
Pablo Neira Ayuso
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Lee <david.lee@trailofbits.com>
commit f30415929be8aeb002d557c8d3f7ab2d2188003a upstream.
mtype_resize() copies comment pointers with memcpy(), not the comment
objects themselves. During the window after an entry has been copied but
before the table swap and backlog replay, the old table is still
published for packet-side updates while the replacement-table entry
already holds the same ip_set_comment_rcu pointer.
If xt_SET --add-set ... --exist hits that old entry in this window,
mtype_add() calls ip_set_init_comment() even though packet-side adds
carry no comment payload. That call frees the shared comment through the
old entry, so the replacement-table entry now holds a stale pointer.
When the queued add is replayed on the new table, mtype_add() calls
ip_set_init_comment() again and strlen() dereferences the stale pointer.
Fix this in mtype_add() by skipping ip_set_init_comment() when
ext->target marks a packet-side add. Userspace adds still update
comments, while packet-side adds can no longer free comment storage
shared with a resize copy.
Fixes: f66ee0410b1c ("netfilter: ipset: Fix "INFO: rcu detected stall in hash_xxx" reports")
Cc: stable@vger.kernel.org
Signed-off-by: David Lee <david.lee@trailofbits.com>
Assisted-by: Codex:gpt-5.5
Acked-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netfilter/ipset/ip_set_hash_gen.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/netfilter/ipset/ip_set_hash_gen.h
+++ b/net/netfilter/ipset/ip_set_hash_gen.h
@@ -984,7 +984,7 @@ overwrite_extensions:
#endif
if (SET_WITH_COUNTER(set))
ip_set_init_counter(ext_counter(data, set), ext);
- if (SET_WITH_COMMENT(set))
+ if (SET_WITH_COMMENT(set) && !ext->target)
ip_set_init_comment(set, ext_comment(data, set), ext);
if (SET_WITH_SKBINFO(set))
ip_set_init_skbinfo(ext_skbinfo(data, set), ext);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 176/337] tipc: avoid use-after-free in poll trace queue dumps
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (173 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 175/337] netfilter: ipset: do not update comments from kernel-side hash adds Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 177/337] wifi: mwifiex: use the subframe length when parsing A-MSDU TDLS frames Greg Kroah-Hartman
` (168 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vega, Zihan Xi, Ren Wei, Tung Nguyen,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zihan Xi <zihanx@nebusec.ai>
commit b4f1719dfea023220e0e6bd892b087d76b2a6a49 upstream.
TIPC socket tracepoints dump queue state through tipc_sk_dump(). Most
queue-dump callsites already serialize that walk under the socket lock or
sk->sk_lock.slock, but tipc_poll() calls trace_tipc_sk_poll(...,
TIPC_DUMP_ALL, ...) without holding either lock.
That lets the poll trace path reach tipc_list_dump() and backlog head/tail
dumping while another context dequeues and frees an skb, leaving the trace
helper dereferencing a stale queue entry.
Stop the unlocked poll trace site from requesting queue dumps. Other queue
dump trace callsites keep their existing output under the locking they
already provide, while poll still emits the event itself without walking
live queue members from an unlocked context.
Fixes: b4b9771bcbbd ("tipc: enable tracepoints in tipc")
Cc: stable@vger.kernel.org
Reported-by: Vega <vega@nebusec.ai>
Signed-off-by: Zihan Xi <zihanx@nebusec.ai>
Signed-off-by: Ren Wei <enjou1224z@gmail.com>
Reviewed-by: Tung Nguyen <tung.quang.nguyen@est.tech>
Link: https://patch.msgid.link/f8119abd5e5ecc400597de667ae9d39656de56d0.1784794294.git.zihanx@nebusec.ai
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/tipc/socket.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -795,7 +795,7 @@ static __poll_t tipc_poll(struct file *f
__poll_t revents = 0;
sock_poll_wait(file, sock, wait);
- trace_tipc_sk_poll(sk, NULL, TIPC_DUMP_ALL, " ");
+ trace_tipc_sk_poll(sk, NULL, TIPC_DUMP_NONE, " ");
if (sk->sk_shutdown & RCV_SHUTDOWN)
revents |= EPOLLRDHUP | EPOLLIN | EPOLLRDNORM;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 177/337] wifi: mwifiex: use the subframe length when parsing A-MSDU TDLS frames
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (174 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 176/337] tipc: avoid use-after-free in poll trace queue dumps Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 178/337] binfmt_misc: reject a flag character as the field delimiter Greg Kroah-Hartman
` (167 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zhao Li, Johannes Berg
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhao Li <enderaoelyther@gmail.com>
commit 99a948382af8a225e2d5e54a7052158cd6281cc6 upstream.
mwifiex_11n_dispatch_amsdu_pkt() splits an A-MSDU with
ieee80211_amsdu_to_8023s() and walks the resulting subframes. For each
subframe it passes the subframe data pointer to
mwifiex_process_tdls_action_frame(), but pairs it with skb->len, the
length of the A-MSDU parent, instead of rx_skb->len:
rx_skb = __skb_dequeue(&list);
rx_hdr = (struct rx_packet_hdr *)rx_skb->data;
if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
ntohs(rx_hdr->eth803_hdr.h_proto) == ETH_P_TDLS) {
mwifiex_process_tdls_action_frame(priv, (u8 *)rx_hdr,
skb->len);
}
The parent is not a valid description of that buffer, and may not be
valid memory at all. ieee80211_amsdu_to_8023s() ends with
if (!reuse_skb)
dev_kfree_skb(skb);
and it only sets reuse_skb when the parent is linear, is not a
head_frag, and is being consumed as the *last* subframe. So when the
parent does not qualify for reuse it has already been freed, and the
read of skb->len is a use-after-free. When it is reused, skb->len is
the length of the last subframe, applied to every earlier subframe,
which over-states the buffer whenever an earlier subframe is shorter.
The callee cannot absorb a wrong length, because it derives its own
ceiling from the value it is given. Each frame type computes
ies_len = len - sizeof(struct ethhdr) - TDLS_*_FIX_LEN;
and the element walk is then bounded entirely against that ceiling,
for (end = pos + ies_len; pos + 1 < end; pos += 2 + pos[1]) {
u8 ie_len = pos[1];
if (pos + 2 + ie_len > end)
break;
so a too-large len moves end past the end of the subframe and the walk
reads and copies beyond it. The A-MSDU layout is chosen by the sender,
which makes the difference between the last subframe and a shorter
earlier one remotely selectable. Reaching this requires TDLS support in
firmware and the TDLS ethertype on the subframe.
The other caller, mwifiex_process_rx_packet(), is correct: it passes a
pointer and a length that describe the same region of the RX buffer.
Pass rx_skb->len, the length of the subframe actually being parsed.
Fixes: 776f742040ca ("mwifiex: fix AMPDU not setup on TDLS link problem")
Assisted-by: Codex:gpt-5.6-sol
Assisted-by: Kimi:K3
Cc: stable@vger.kernel.org
Signed-off-by: Zhao Li <enderaoelyther@gmail.com>
Link: https://patch.msgid.link/20260728115325.19128-1-enderaoelyther@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
+++ b/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
@@ -44,7 +44,7 @@ static int mwifiex_11n_dispatch_amsdu_pk
ntohs(rx_hdr->eth803_hdr.h_proto) == ETH_P_TDLS) {
mwifiex_process_tdls_action_frame(priv,
(u8 *)rx_hdr,
- skb->len);
+ rx_skb->len);
}
if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 178/337] binfmt_misc: reject a flag character as the field delimiter
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (175 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 177/337] wifi: mwifiex: use the subframe length when parsing A-MSDU TDLS frames Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 179/337] binfmt_misc: dont let an F entry pin its own instance Greg Kroah-Hartman
` (166 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Christian Brauner (Amutable)
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
commit 8e85d50ba1117fd446bf9a250bd8a97d48384bdc upstream.
The registration string starts with a user chosen delimiter that
separates the individual fields. So that the field parsers terminate
even on a truncated string create_entry() pads the buffer with that
same delimiter:
memset(buf + count, del, 8);
Most fields are scanned for the delimiter with strchr()/scanarg() and
happily stop on the padding. The flags field is different: instead of
scanning for the delimiter check_special_flags() consumes the flag
characters 'P', 'O', 'C' and 'F' and stops at the first byte that is
none of them, relying on the trailing delimiter to end the scan.
If the delimiter is itself a flag character the padding no longer acts
as a terminator. The scan swallows all eight padding bytes and keeps
reading past the end of the allocation until it hits a byte that is
not a flag character. For example registering
PaPEPPxPPiP
with 'P' as the delimiter (name "a", type extension, magic "x",
interpreter "i", empty flags) leaves the flag scan running off the end
of the buffer. The registration is rejected in the end because the
parser does not stop exactly at buf + count, but only after the out of
bounds read has already happened. With an unlucky allocation layout the
scan can walk into an unmapped page; under KASAN it is reported as a
slab out of bounds read. binfmt_misc mounts are available to
unprivileged users in a user namespace so the read is reachable without
privileges.
Reject a delimiter that is one of the flag characters up front. Such a
registration was always rejected anyway, only after the out of bounds
read, so no valid registration string changes meaning.
Link: https://patch.msgid.link/20260710-work-binfmt_misc-locking-v3-3-a162f7cb58d6@kernel.org
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/binfmt_misc.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -375,6 +375,10 @@ static Node *create_entry(const char __u
pr_debug("register: delim: %#x {%c}\n", del, del);
+ /* A flag-char delimiter runs the flag scan off the buffer. */
+ if (del == 'P' || del == 'O' || del == 'C' || del == 'F')
+ goto einval;
+
/* Pad the buffer with the delim to simplify parsing below. */
memset(buf + count, del, 8);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 179/337] binfmt_misc: dont let an F entry pin its own instance
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (176 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 178/337] binfmt_misc: reject a flag character as the field delimiter Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 180/337] mm/page_reporting: use system_freezable_wq to fix UAF during suspend Greg Kroah-Hartman
` (165 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Christian Brauner (Amutable)
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Brauner <brauner@kernel.org>
commit 79055d82772b9584f259b747fe40ff56a076678d upstream.
An entry registered with 'F' opens its interpreter at registration time
and holds that file until the entry is freed. Any entry nobody removes
by hand only gets closed once the binfmt_misc superblock is shut down.
If the interpreter lives on a mount that keeps that superblock alive the
two pin each other:
binfmt_misc sb -> inode -> entry -> interp_file -> vfsmount -> binfmt_misc sb
TL;DR the file is never closed. Once the mount namespace is gone there
is nothing left to unregister through either.
There are two ways to trigger this bug:
- Point the interpreter at the instance itself. Its files are regular
files owned by the mounter and both bm_get_inode() and
simple_fill_super() leave i_op at empty_iops. So notify_change() falls
back to simple_setattr() and chmod +x works. We never set SB_I_NOEXEC
and so open_exec() accepts it.
- Use the instance as an overlayfs lower layer. The overlay superblock
holds a clone_private_mount() of every layer until it is destroyed and
that clone is in no namespace. So umount_tree() never reaches it.
That's a DoS. And it isn't only the superblock that leaks. It pins the
user namespace it was mounted in, so every iteration permanently eats
one of the caller's user namespace charges.
So let's just do the sane thing. SB_I_NOEXEC makes open_exec() fail on
the instance's own files and s_stack_depth makes overlayfs reject the
layer before it ever takes a clone. That also covers the ecryptfs and
fuse passthrough variants. What 'F' promises is unchanged.
The stable tag is narrower than the Fixes tags on purpose. Before
sandboxed mounts this needed global root against the single instance
everyone shares, and the change doesn't apply to those trees anyway.
Note that SB_I_NODEV is implicitly raised for userns mounts but raise it
explicitly here as well.
Link: https://patch.msgid.link/20260728-work-binfmt_misc-selfpin-v1-1-74df5daeca5b@kernel.org
Fixes: 948b701a607f ("binfmt_misc: add persistent opened binary handler for containers")
Fixes: 21ca59b365c0 ("binfmt_misc: enable sandboxed mounts")
Cc: stable@vger.kernel.org # v6.7+
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/binfmt_misc.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -986,6 +986,10 @@ static int bm_fill_super(struct super_bl
if (WARN_ON(user_ns != current_user_ns()))
return -EINVAL;
+ /* Never exec off this instance and never let anything stack on it. */
+ sb->s_iflags |= SB_I_NOEXEC | SB_I_NODEV;
+ sb->s_stack_depth = FILESYSTEM_MAX_STACK_DEPTH;
+
/*
* Lazily allocate a new binfmt_misc instance for this namespace, i.e.
* do it here during the first mount of binfmt_misc. We don't need to
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 180/337] mm/page_reporting: use system_freezable_wq to fix UAF during suspend
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (177 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 179/337] binfmt_misc: dont let an F entry pin its own instance Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 181/337] mm: memcg: initialize *locked in memcg1_oom_prepare() stub Greg Kroah-Hartman
` (164 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Link Lin, David Hildenbrand (Arm),
Michael S. Tsirkin, David Rientjes, Alexander Duyck, Greg Thelen,
James Houghton, Jason Wang, Jiaqi Yan, Vlastimil Babka, Xuan Zhuo,
Andrew Morton
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Link Lin <linkl@google.com>
commit 0b45f6927a14914ff685fe0e6f9d11232a1e03df upstream.
During PM freeze (e.g. S3 suspend or S4 hibernation), device drivers like
virtio_balloon reset their underlying virtio devices and delete their
virtqueues via vdev->config->del_vqs().
However, page reporting work (page_reporting_process) was scheduled on the
global system_wq. Because system_wq lacks the WQ_FREEZABLE flag, the PM
freezer skips it, leaving page_reporting_process active during suspend.
If pages are freed into the buddy allocator while suspending (for example,
when core MM invokes the balloon shrinker during S4 hibernation image
saving), page reporting triggers virtballoon_free_page_report() on deleted
virtqueues, resulting in a Use-After-Free / General Protection Fault:
[ 196.795226] general protection fault, probably for non-canonical address 0xaa1436fe70dae6df: 0000 [#1] SMP NOPTI
[ 196.825967] Workqueue: events page_reporting_process
[ 196.831038] RIP: 0010:virtqueue_add_split+0x233/0x4c0 [virtio_ring]
[ 196.927073] virtballoon_free_page_report+0x3a/0xe0 [virtio_balloon]
[ 196.946943] page_reporting_process+0x370/0x4f0
Fix this by switching page reporting work to system_freezable_wq. This
ensures that the PM freezer pauses page_reporting_process before device
drivers destroy their reporting virtqueues. Because the reporting worker
is frozen, memory reclamation/freeing (e.g. via shrinker execution) can
safely return pages to MM during freeze without triggering unfrozen
reporting work on deleted virtqueues.
This aligns with the driver's existing design. The comment in
virtballoon_freeze() states:
/*
* The workqueue is already frozen by the PM core before this
* function is called.
*/
Testing:
I have verified these fixes using Google’s virtualization infrastructure
by running continuous suspend/resume iterations (40+ cycles) while
churning memory using stress-ng (`stress-ng --vm 4 --vm-bytes 60%
--timeout 1`) to constantly create free pages for the buddy allocator. We
also set the `page_reporting_order` parameter to 0 to make the page
reporting worker highly sensitive, forcing it to pick up any 4K free
pages. This confirmed that the UAF crashes are no longer reproducible.
Link: https://lore.kernel.org/20260721005603.1710551-1-linkl@google.com
Fixes: 36e66c554b5c ("mm: introduce Reported pages")
Signed-off-by: Link Lin <linkl@google.com>
Suggested-by: David Hildenbrand (Arm) <david@kernel.org>
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: James Houghton <jthoughton@google.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Jiaqi Yan <jiaqiyan@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/page_reporting.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/mm/page_reporting.c
+++ b/mm/page_reporting.c
@@ -80,7 +80,8 @@ __page_reporting_request(struct page_rep
* now we are limiting this to running no more than once every
* couple of seconds.
*/
- schedule_delayed_work(&prdev->work, PAGE_REPORTING_DELAY);
+ queue_delayed_work(system_freezable_wq, &prdev->work,
+ PAGE_REPORTING_DELAY);
}
/* notify prdev of free page reporting request */
@@ -343,7 +344,8 @@ err_out:
*/
state = atomic_cmpxchg(&prdev->state, state, PAGE_REPORTING_IDLE);
if (state == PAGE_REPORTING_REQUESTED)
- schedule_delayed_work(&prdev->work, PAGE_REPORTING_DELAY);
+ queue_delayed_work(system_freezable_wq, &prdev->work,
+ PAGE_REPORTING_DELAY);
}
static DEFINE_MUTEX(page_reporting_mutex);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 181/337] mm: memcg: initialize *locked in memcg1_oom_prepare() stub
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (178 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 180/337] mm/page_reporting: use system_freezable_wq to fix UAF during suspend Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 182/337] net: bridge: stop fast-leave after deleting a port group Greg Kroah-Hartman
` (163 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Breno Leitao, Joshua Hahn,
Johannes Weiner, SeongJae Park, Shakeel Butt, Michal Hocko,
Muchun Song, Roman Gushchin, Andrew Morton
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Breno Leitao <leitao@debian.org>
commit 1833ce36b35426504c64600c94f322437ea44bb2 upstream.
mem_cgroup_oom() passes an uninitialized "locked" to memcg1_oom_prepare()
and reads it back in memcg1_oom_finish():
bool locked, ret;
...
if (!memcg1_oom_prepare(memcg, &locked))
return false;
ret = mem_cgroup_out_of_memory(memcg, mask, order);
memcg1_oom_finish(memcg, locked);
This relies on memcg1_oom_prepare() setting *locked whenever it returns
true. The CONFIG_MEMCG_V1=y version does, but the stub used when
CONFIG_MEMCG_V1=n returns true without touching *locked, so
memcg1_oom_finish() consumes an uninitialized value. On a memcg OOM this
is reported by UBSAN:
UBSAN: invalid-load in mm/memcontrol.c:1932:27
load of value 0 is not a valid value for type 'bool' (aka '_Bool')
Initialize *locked to false in the stub; with cgroup v1 compiled out there
is no OOM lock to take.
Link: https://lore.kernel.org/20260716-memcg-oom-uninit-locked-v2-1-63631d878eb4@debian.org
Fixes: e93d4166b40a ("mm: memcg: put cgroup v1-specific code under a config option")
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/memcontrol-v1.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/mm/memcontrol-v1.h
+++ b/mm/memcontrol-v1.h
@@ -133,7 +133,11 @@ static inline void memcg1_soft_limit_res
static inline bool memcg1_wait_acct_move(struct mem_cgroup *memcg) { return false; }
static inline void memcg1_css_offline(struct mem_cgroup *memcg) {}
-static inline bool memcg1_oom_prepare(struct mem_cgroup *memcg, bool *locked) { return true; }
+static inline bool memcg1_oom_prepare(struct mem_cgroup *memcg, bool *locked)
+{
+ *locked = false;
+ return true;
+}
static inline void memcg1_oom_finish(struct mem_cgroup *memcg, bool locked) {}
static inline void memcg1_oom_recover(struct mem_cgroup *memcg) {}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 182/337] net: bridge: stop fast-leave after deleting a port group
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (179 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 181/337] mm: memcg: initialize *locked in memcg1_oom_prepare() stub Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 183/337] net: ipv6: clear suppressed fib6 rule result Greg Kroah-Hartman
` (162 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vega, Zhiling Zou, Ren Wei,
Nikolay Aleksandrov, Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhiling Zou <zhilinz@nebusec.ai>
commit a39789f211b8a4125f0c70e05b30cf715f4f187d upstream.
br_multicast_leave_group() iterates mp->ports with pp = &p->next in
its fast-leave path. After br_multicast_del_pg() removes p,
continuing the loop advances pp through the deleted entry.
If multicast-to-unicast was enabled, the bridge can hold multiple port
groups for the same port and group with different source MAC
addresses. Once multicast-to-unicast is disabled,
br_port_group_equal() matches those entries by port only. A fast leave
can then delete one entry and continue from its stale next pointer,
leaving mp->ports pointing at a deleted port group.
Fast leave only needs to remove one matching port group. Break after
br_multicast_del_pg() so the loop stops before dereferencing the
removed entry.
Fixes: 6db6f0eae605 ("bridge: multicast to unicast")
Cc: stable@vger.kernel.org
Reported-by: Vega <vega@nebusec.ai>
Signed-off-by: Zhiling Zou <zhilinz@nebusec.ai>
Signed-off-by: Ren Wei <enjou1224z@gmail.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/1cf0898872ef7c72d5f4c0304414a192c6dac591.1784707712.git.zhilinz@nebusec.ai
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/bridge/br_multicast.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -3685,6 +3685,7 @@ br_multicast_leave_group(struct net_brid
p->flags |= MDB_PG_FLAGS_FAST_LEAVE;
br_multicast_del_pg(mp, p, pp);
+ break;
}
goto out;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 183/337] net: ipv6: clear suppressed fib6 rule result
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (180 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 182/337] net: bridge: stop fast-leave after deleting a port group Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 184/337] powerpc/ps3: Fix map failure path in dma_ioc0_map_pages() Greg Kroah-Hartman
` (161 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vega, Zhiling Zou, Ren Wei,
Ido Schimmel, Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhiling Zou <zhilinz@nebusec.ai>
commit 6aea62e433fe1b586202a5fee8b5807ce635e1d7 upstream.
fib6_rule_suppress() drops a suppressed route with ip6_rt_put_flags(),
but leaves res->rt6 pointing at the released rt6_info.
If no later rule supplies a replacement, fib6_rule_lookup() still sees
res.rt6 and returns that stale dst to its caller. A suppressing rule can
therefore leak a released route back to rt6_lookup(), and the next put
hits rcuref_put_slowpath() from dst_release().
Clear res->rt6 when suppressing the route so suppressed lookups fall
through to the null dst instead of reusing the released one.
Fixes: cdef485217d3 ("ipv6: fix memory leak in fib6_rule_suppress")
Cc: stable@vger.kernel.org
Reported-by: Vega <vega@nebusec.ai>
Signed-off-by: Zhiling Zou <zhilinz@nebusec.ai>
Signed-off-by: Ren Wei <enjou1224z@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/4b8acb7787d54e440155585dd32ebdf0bef7d122.1784710966.git.zhilinz@nebusec.ai
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv6/fib6_rules.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -302,6 +302,7 @@ INDIRECT_CALLABLE_SCOPE bool fib6_rule_s
suppress_route:
ip6_rt_put_flags(rt, flags);
+ res->rt6 = NULL;
return true;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 184/337] powerpc/ps3: Fix map failure path in dma_ioc0_map_pages()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (181 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 183/337] net: ipv6: clear suppressed fib6 rule result Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 185/337] um: vector: fix use-after-free in vector_mmsg_rx() Greg Kroah-Hartman
` (160 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thorsten Blum, Ritesh Harjani (IBM),
Geert Uytterhoeven, Madhavan Srinivasan
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thorsten Blum <thorsten.blum@linux.dev>
commit 0bb024f11d120abff3e8db9144a585b9d7fb8459 upstream.
If lv1_put_iopte() fails in dma_ioc0_map_pages(), the error path
decrements iopage but keeps using the failed mapping's offset. As a
result, it repeatedly tries to invalidate the failed IOPTE slot and
leaves the already installed IOPTEs valid.
Recompute offset and invalidate the installed IOPTEs instead.
Fixes: 6bb5cf102541 ("[POWERPC] PS3: System-bus rework")
Cc: stable@vger.kernel.org
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260711130931.740719-3-thorsten.blum@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/platforms/ps3/mm.c | 1 +
1 file changed, 1 insertion(+)
--- a/arch/powerpc/platforms/ps3/mm.c
+++ b/arch/powerpc/platforms/ps3/mm.c
@@ -615,6 +615,7 @@ static int dma_ioc0_map_pages(struct ps3
fail_map:
for (iopage--; 0 <= iopage; iopage--) {
+ offset = (1 << r->page_size) * iopage;
lv1_put_iopte(0,
c->bus_addr + offset,
c->lpar_addr + offset,
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 185/337] um: vector: fix use-after-free in vector_mmsg_rx()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (182 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 184/337] powerpc/ps3: Fix map failure path in dma_ioc0_map_pages() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 186/337] veth: convert frag_list skbs before running XDP Greg Kroah-Hartman
` (159 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Michael Bommarito,
Richard Weinberger
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michael Bommarito <michael.bommarito@gmail.com>
commit af421e9aed3920c7ac88c24daa48606c7112feca upstream.
When vector_mmsg_rx() discards a packet whose overlay header fails
verify_header(), it frees the skb and continues the loop:
if (header_check < 0) {
dev_kfree_skb_irq(skb);
vp->estats.rx_encaps_errors++;
continue;
}
The normal and short-packet paths fall through to the bottom of the
loop body, which clears the consumed slot and advances the cursors:
(*skbuff_vector) = NULL;
mmsg_vector++;
skbuff_vector++;
The verify_header() < 0 path skips that via continue, so the freed skb
is left in skbuff_vector[] and the cursors do not advance. The next
iteration reads the same slot, gets the freed skb, and frees it again,
producing a refcount underflow / use-after-free in the RX path.
Discard the slot the same way the other paths do before continuing.
Only transports whose verify_header() can return negative are affected:
GRE and L2TPv3 do so on a cookie/session-id mismatch (raw/tap do not),
so any peer on such a transport can trigger it without authentication.
Fixes: 49da7e64f33e ("High Performance UML Vector Network Driver")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/um/drivers/vector_kern.c | 3 +++
1 file changed, 3 insertions(+)
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -999,6 +999,9 @@ static int vector_mmsg_rx(struct vector_
*/
dev_kfree_skb_irq(skb);
vp->estats.rx_encaps_errors++;
+ (*skbuff_vector) = NULL;
+ mmsg_vector++;
+ skbuff_vector++;
continue;
}
if (header_check > 0) {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 186/337] veth: convert frag_list skbs before running XDP
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (183 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 185/337] um: vector: fix use-after-free in vector_mmsg_rx() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 187/337] vxlan: re-fetch eth header after route_shortcircuit() Greg Kroah-Hartman
` (158 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matt Fleming,
Toke Høiland-Jørgensen, Lorenzo Bianconi,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matt Fleming <mfleming@cloudflare.com>
commit d0d6415963040c401e7a7e4e482a698ba52448cb upstream.
A frag_list skb can reach veth with data_len set but nr_frags zero.
veth_convert_skb_to_xdp_buff() only converts skbs that are shared,
locked, have frags[], or do not have enough headroom. It later uses
skb_is_nonlinear() to decide whether to set XDP_FLAGS_HAS_FRAGS and
xdp_frags_size.
That exposes frag_list data to XDP as if it were stored in frags[], but
frags[] is empty. AF_XDP copy mode can then trust the bogus XDP fragment
metadata, walk an empty fragment entry, and crash in memcpy() from
__xsk_rcv().
Route non-linear skbs through skb_pp_cow_data() before exposing them to
XDP, and only advertise XDP frags when the resulting skb has frags[].
skb_copy_bits() already handles frag_list input, and skb_pp_cow_data()
builds frags[] output with skb_add_rx_frag(), which is the
representation XDP multi-buffer expects.
Fixes: 718a18a0c8a6 ("veth: Rework veth_xdp_rcv_skb in order to accept non-linear skb")
Cc: stable@vger.kernel.org
Signed-off-by: Matt Fleming <mfleming@cloudflare.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@toke.dk>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260722191925.2192070-1-matt@readmodwrite.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/veth.c | 4 ++--
net/core/skbuff.c | 18 ++++++++++++------
2 files changed, 14 insertions(+), 8 deletions(-)
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -756,7 +756,7 @@ static int veth_convert_skb_to_xdp_buff(
u32 frame_sz;
if (skb_shared(skb) || skb_head_is_locked(skb) ||
- skb_shinfo(skb)->nr_frags ||
+ skb_is_nonlinear(skb) ||
skb_headroom(skb) < XDP_PACKET_HEADROOM) {
if (skb_pp_cow_data(rq->page_pool, pskb, XDP_PACKET_HEADROOM))
goto drop;
@@ -771,7 +771,7 @@ static int veth_convert_skb_to_xdp_buff(
xdp_prepare_buff(xdp, skb->head, skb_headroom(skb),
skb_headlen(skb), true);
- if (skb_is_nonlinear(skb)) {
+ if (skb_shinfo(skb)->nr_frags) {
skb_shinfo(skb)->xdp_frags_size = skb->data_len;
xdp_buff_set_frags_flag(xdp);
} else {
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -925,6 +925,18 @@ static void skb_clone_fraglist(struct sk
skb_get(list);
}
+/**
+ * skb_pp_cow_data() - copy skb data into page-pool backed storage
+ * @pool: page pool to allocate from
+ * @pskb: pointer to skb pointer, replaced with the copied skb on success
+ * @headroom: headroom to reserve in the copied skb
+ *
+ * skb_copy_bits() handles both frags[] and frag_list input. If the copied
+ * skb remains non-linear, it uses frags[], which is the representation used
+ * by XDP multi-buffer.
+ *
+ * Return: 0 on success or a negative errno on failure.
+ */
int skb_pp_cow_data(struct page_pool *pool, struct sk_buff **pskb,
unsigned int headroom)
{
@@ -934,12 +946,6 @@ int skb_pp_cow_data(struct page_pool *po
int err, i, head_off;
void *data;
- /* XDP does not support fraglist so we need to linearize
- * the skb.
- */
- if (skb_has_frag_list(skb))
- return -EOPNOTSUPP;
-
max_head_size = SKB_WITH_OVERHEAD(PAGE_SIZE - headroom);
if (skb->len > max_head_size + MAX_SKB_FRAGS * PAGE_SIZE)
return -ENOMEM;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 187/337] vxlan: re-fetch eth header after route_shortcircuit()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (184 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 186/337] veth: convert frag_list skbs before running XDP Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 188/337] vxlan: unclone skb head before modifying eth header in route_shortcircuit() Greg Kroah-Hartman
` (157 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Vadim Fedorenko,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
commit 1395a676ec15a0a02a2a6d86602324f2d5fd41d5 upstream.
Before route_shortcircuit(), the eth header pointer is cached from eth_hdr(skb).
Inside route_shortcircuit(), pskb_may_pull() can be called, which may
reallocate skb->head.
In this case, returning to vxlan_xmit() leaves the cached eth pointer pointing to
freed memory, leading to a use-after-free when dereferencing eth->h_dest.
Fix this by updating eth = eth_hdr(skb) after calling route_shortcircuit().
Fixes: ae8840825605 ("VXLAN: Allow L2 redirection with L3 switching")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20260723144249.759100-2-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/vxlan/vxlan_core.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -2790,6 +2790,7 @@ static netdev_tx_t vxlan_xmit(struct sk_
(ntohs(eth->h_proto) == ETH_P_IP ||
ntohs(eth->h_proto) == ETH_P_IPV6)) {
did_rsc = route_shortcircuit(dev, skb);
+ eth = eth_hdr(skb);
if (did_rsc)
f = vxlan_find_mac_tx(vxlan, eth->h_dest, vni);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 188/337] vxlan: unclone skb head before modifying eth header in route_shortcircuit()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (185 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 187/337] vxlan: re-fetch eth header after route_shortcircuit() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 189/337] vxlan: use neigh_ha_snapshot() " Greg Kroah-Hartman
` (156 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
commit 760d36e737f2b3867762f42af36c663f55babcc4 upstream.
When route_shortcircuit() performs L3 short-circuit routing, it modifies
the Ethernet header of the skb in-place:
memcpy(eth_hdr(skb)->h_source, eth_hdr(skb)->h_dest, dev->addr_len);
memcpy(eth_hdr(skb)->h_dest, n->ha, dev->addr_len);
If the incoming skb is cloned (for example by packet sockets, tcpdump, or
dev_queue_xmit), modifying the Ethernet header without uncloning can corrupt
the packet header for other readers holding a reference to the cloned skb.
Ensure the skb header is writable and unshared by calling skb_cow_head(skb, 0)
prior to updating the Ethernet header. If skb_cow_head() fails, abort short-circuiting
and return false to allow standard packet processing fallback.
Fixes: e4f67addf158 ("add DOVE extensions for VXLAN")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260723144249.759100-3-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/vxlan/vxlan_core.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -2190,6 +2190,10 @@ static bool route_shortcircuit(struct ne
diff = !ether_addr_equal(eth_hdr(skb)->h_dest, n->ha);
if (diff) {
+ if (skb_cow_head(skb, 0)) {
+ neigh_release(n);
+ return false;
+ }
memcpy(eth_hdr(skb)->h_source, eth_hdr(skb)->h_dest,
dev->addr_len);
memcpy(eth_hdr(skb)->h_dest, n->ha, dev->addr_len);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 189/337] vxlan: use neigh_ha_snapshot() in route_shortcircuit()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (186 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 188/337] vxlan: unclone skb head before modifying eth header in route_shortcircuit() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 190/337] vxlan: use pskb_network_may_pull() " Greg Kroah-Hartman
` (155 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Vadim Fedorenko,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
commit 8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d upstream.
The neighbour hardware address n->ha can be updated asynchronously by the
neighbour subsystem, protected by n->ha_lock seqlock. Reading n->ha without
holding the seqlock loop can lead to torn reads or reading a partially updated
MAC address.
Use neigh_ha_snapshot() in route_shortcircuit() to safely copy n->ha under
read_seqbegin()/read_seqretry() lock protection before using it.
Note that arp_reduce() and neigh_reduce() seem to have the same issue
left for future patches.
Fixes: e4f67addf158 ("add DOVE extensions for VXLAN")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20260723144249.759100-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/vxlan/vxlan_core.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -2186,9 +2186,11 @@ static bool route_shortcircuit(struct ne
}
if (n) {
+ u8 haddr[ETH_ALEN];
bool diff;
- diff = !ether_addr_equal(eth_hdr(skb)->h_dest, n->ha);
+ neigh_ha_snapshot(haddr, n, dev);
+ diff = !ether_addr_equal_unaligned(eth_hdr(skb)->h_dest, haddr);
if (diff) {
if (skb_cow_head(skb, 0)) {
neigh_release(n);
@@ -2196,7 +2198,7 @@ static bool route_shortcircuit(struct ne
}
memcpy(eth_hdr(skb)->h_source, eth_hdr(skb)->h_dest,
dev->addr_len);
- memcpy(eth_hdr(skb)->h_dest, n->ha, dev->addr_len);
+ memcpy(eth_hdr(skb)->h_dest, haddr, dev->addr_len);
}
neigh_release(n);
return diff;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 190/337] vxlan: use pskb_network_may_pull() in route_shortcircuit()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (187 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 189/337] vxlan: use neigh_ha_snapshot() " Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 191/337] ublk: reset kernel-owned dev_info fields in ublk_ctrl_add_dev() Greg Kroah-Hartman
` (154 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Eric Dumazet, Vadim Fedorenko,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
commit 26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb upstream.
route_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr))
(or ipv6hdr), which checks if bytes are available starting from skb->data.
However, in vxlan_xmit(), skb->data points to the MAC header, so
skb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20)
only checks 20 bytes from skb->data (which is 14 bytes MAC header + 6 bytes of
IP header), leaving the rest of the IP header potentially un-pulled in non-linear
frags. Subsequent dereferences of ip_hdr(skb)->daddr can read beyond the pulled
linear buffer length.
Fix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to
the length check to ensure the full network header is present in the linear buffer.
Fixes: e4f67addf158 ("add DOVE extensions for VXLAN")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20260723144249.759100-5-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/vxlan/vxlan_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -2138,7 +2138,7 @@ static bool route_shortcircuit(struct ne
{
struct iphdr *pip;
- if (!pskb_may_pull(skb, sizeof(struct iphdr)))
+ if (!pskb_network_may_pull(skb, sizeof(struct iphdr)))
return false;
pip = ip_hdr(skb);
n = neigh_lookup(&arp_tbl, &pip->daddr, dev);
@@ -2164,7 +2164,7 @@ static bool route_shortcircuit(struct ne
*/
if (!ipv6_stub->nd_tbl)
return false;
- if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
+ if (!pskb_network_may_pull(skb, sizeof(struct ipv6hdr)))
return false;
pip6 = ipv6_hdr(skb);
n = neigh_lookup(ipv6_stub->nd_tbl, &pip6->daddr, dev);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 191/337] ublk: reset kernel-owned dev_info fields in ublk_ctrl_add_dev()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (188 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 190/337] vxlan: use pskb_network_may_pull() " Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 192/337] tracing: Check return value of __register_event() in trace_module_add_events() Greg Kroah-Hartman
` (153 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ming Lei, Caleb Sander Mateos,
Jens Axboe
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ming Lei <tom.leiming@gmail.com>
commit e65848e4ce352bac9e3465099354c8b8f845391f upstream.
ublk_ctrl_add_dev() memcpy()s the userspace ublksrv_ctrl_dev_info into
ub->dev_info and then fixes up the fields the driver owns, but misses
->state and ->ublksrv_pid.
A device added with ->state = UBLK_S_DEV_LIVE passes the
"->state != UBLK_S_DEV_DEAD" test that ublk_stop_dev_unlocked() uses as its
proxy for "a disk is attached", while ->ub_disk is still NULL, so DEL_DEV
right after ADD_DEV oopses in del_gendisk(). UBLK_S_DEV_QUIESCED plus
UBLK_F_USER_RECOVERY dies one step earlier, in ublk_force_abort_dev(). A
poisoned ->state also gets START_USER_RECOVERY and the char device
read/write path onto a device that was never started, and wedges START_DEV
at -EEXIST. A poisoned ->ublksrv_pid just makes GET_DEV_INFO report an
unrelated task as the ublk server.
Reset both after the memcpy(), as ublk_detach_disk() does. Userspace only
ever reads these back, so correcting them silently breaks nothing.
ADD_DEV has copied ->state in unsanitized since ublk was merged, but back
then it was harmless: the gendisk was allocated during ADD_DEV, and both
teardown and the START_DEV -EEXIST check keyed off disk_live() rather than
->state. The oops became reachable once the disk allocation moved to
START_DEV and those checks switched to ->state.
Fixes: 6d9e6dfdf3b2 ("ublk: defer disk allocation")
Cc: stable@vger.kernel.org
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Link: https://patch.msgid.link/20260726145025.1507383-1-tom.leiming@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/block/ublk_drv.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -2559,6 +2559,15 @@ static int ublk_ctrl_add_dev(struct io_u
ub->dev_info.dev_id = ub->ub_number;
/*
+ * ->state and ->ublksrv_pid are owned by the driver and only read back
+ * by userspace, but they come from the copied-in dev_info, so reset
+ * them. Otherwise a device added with ->state != DEAD looks live while
+ * ->ub_disk is still NULL.
+ */
+ ub->dev_info.state = UBLK_S_DEV_DEAD;
+ ub->dev_info.ublksrv_pid = -1;
+
+ /*
* 64bit flags will be copied back to userspace as feature
* negotiation result, so have to clear flags which driver
* doesn't support yet, then userspace can get correct flags
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 192/337] tracing: Check return value of __register_event() in trace_module_add_events()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (189 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 191/337] ublk: reset kernel-owned dev_info fields in ublk_ctrl_add_dev() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 193/337] tracing/filters: Fix false positive match in regex_match_full() Greg Kroah-Hartman
` (152 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google),
Steven Rostedt
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
commit ac8719969e6c3c54e939834df812bc41f25453cf upstream.
trace_module_add_events() ignores the return value of __register_event()
and unconditionally calls __add_event_to_tracers() for each event.
If __register_event() fails (for example, if event_init() fails), the
trace_event_call is not added to ftrace_events list, but
__add_event_to_tracers() still creates a trace_event_file pointing to it.
If module loading subsequently fails and module memory is freed, tracing
state retains a stale trace_event_call pointer in trace_event_file,
leading to a use-after-free when tracefs or tracing subsystem operations
are later executed.
Fix this by checking the return value of __register_event() and only
calling __add_event_to_tracers() if event registration succeeded.
Fixes: ae63b31e4d0e ("tracing: Separate out trace events from global variables")
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/178528487878.124250.14170824576025743236.stgit@devnote2
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_events.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -3405,8 +3405,8 @@ static void trace_module_add_events(stru
end = mod->trace_events + mod->num_trace_events;
for_each_event(call, start, end) {
- __register_event(*call, mod);
- __add_event_to_tracers(*call);
+ if (!__register_event(*call, mod))
+ __add_event_to_tracers(*call);
}
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 193/337] tracing/filters: Fix false positive match in regex_match_full()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (190 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 192/337] tracing: Check return value of __register_event() in trace_module_add_events() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 194/337] spi: qcom-qspi: Correct max DMA length to avoid 64K boundary failure Greg Kroah-Hartman
` (151 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Masami Hiramatsu (Google),
Steven Rostedt
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
commit c22c7b735f9810ad276014f788f9aa5c879ec238 upstream.
regex_match_full() calls strncmp(str, r->pattern, len) where len is the
target field buffer size. When len is smaller than r->len (the filter
pattern length), strncmp() checks only len bytes of r->pattern against
str. If those len bytes match, strncmp() returns 0, resulting in a
false-positive match where a shorter string in a fixed-size field
matches a longer filter pattern.
For example, a 4-byte static string field containing "abcd" matched the
filter pattern "abcdefgh" because strncmp("abcd", "abcdefgh", 4)
returned 0. In this case, @len does NOT include '\0' because it is
fixed-size array.
Fix this by returning 0 (no match) early when len < r->len.
Fixes: 1889d20922d1 ("tracing/filters: Provide basic regex support")
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/178528488779.124250.5571741156199253769.stgit@devnote2
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/trace/trace_events_filter.c | 3 +++
1 file changed, 3 insertions(+)
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1027,6 +1027,9 @@ static int regex_match_full(char *str, s
if (!len)
return strcmp(str, r->pattern) == 0;
+ if (len < r->len)
+ return 0;
+
return strncmp(str, r->pattern, len) == 0;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 194/337] spi: qcom-qspi: Correct max DMA length to avoid 64K boundary failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (191 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 193/337] tracing/filters: Fix false positive match in regex_match_full() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 195/337] selftests/mm: fix potential wild pointer access of getline due to missing init Greg Kroah-Hartman
` (150 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vijaya Krishna Nivarthi, Mark Brown
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vijaya Krishna Nivarthi <vijaya.nivarthi@oss.qualcomm.com>
commit 90ef2f2961c2dc55957dafe2f53b3efdb4675efc upstream.
The maximum size for a DMA data descriptor is 64KB-1 because the size
field in HW is 16 bits wide. For this reason, transfers fail at 64KB
and beyond.
Lower max_dma_len to 60KB so larger transfers are split into multiple
DMA blocks and do not hit the failing 64KB boundary. 60KB is chosen as
a safe round number below the 64KB-1 hardware limit while satisfying
alignment requirements.
Tested on x1e80100 (Hamoa) with SPI-NOR flash (/dev/mtd0):
Without patch:
dd if=/dev/mtd0 of=/tmp/spi_dump.bin bs=32768 count=2 # works
dd if=/dev/mtd0 of=/tmp/spi_dump.bin bs=65536 count=1 # fails
With patch:
dd if=/dev/mtd0 of=/tmp/spi_dump.bin bs=65536 count=1 # works
Fixes: b5762d95607e ("spi: spi-qcom-qspi: Add DMA mode support")
Cc: stable@vger.kernel.org
Signed-off-by: Vijaya Krishna Nivarthi <vijaya.nivarthi@oss.qualcomm.com>
Link: https://patch.msgid.link/20260722092358.459943-1-vnivarth@qti.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/spi/spi-qcom-qspi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/spi/spi-qcom-qspi.c
+++ b/drivers/spi/spi-qcom-qspi.c
@@ -759,7 +759,8 @@ static int qcom_qspi_probe(struct platfo
return dev_err_probe(dev, ret, "could not set DMA mask\n");
host->max_speed_hz = 300000000;
- host->max_dma_len = 65536; /* as per HPG */
+ /* as per HPG, it is 64KB, limit to 60KB to avoid boundary condition failures */
+ host->max_dma_len = 0xf000;
host->dma_alignment = QSPI_ALIGN_REQ;
host->num_chipselect = QSPI_NUM_CS;
host->bus_num = -1;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 195/337] selftests/mm: fix potential wild pointer access of getline due to missing init
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (192 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 194/337] spi: qcom-qspi: Correct max DMA length to avoid 64K boundary failure Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 196/337] selftests/clone3: fix " Greg Kroah-Hartman
` (149 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chris Gellermann,
David Hildenbrand (arm), Lorenzo Stoakes, Christian Brauner,
Liam R. Howlett, Michal Hocko, Mike Rapoport, Shuah Khan,
Suren Baghdasaryan, Vlastimil Babka, Andrew Morton
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chris Gellermann <christian.gellermann@codasip.com>
commit 9f1d75a4ce04095afdb63d8e540092ff8151dacf upstream.
This is another occurrence of using getline where the code assumes that
getline allocates memory to store the line, but the pointer passed to it
is uninitialized and potentially a non-null pointer. This violates the
Open Group Spec[1] and caused a segfault in a similar situation in
selftest/clone3/clone3_set_tid. Fix it by initializing the line pointer
to NULL.
The issue has been found by simply grepping through the selftest code
after running into the issue in clone3_set_tid. Whether it segfaults in
its current state is unknown to me. But it's good to be addressed due to
defensive reasons.
Link: https://lore.kernel.org/20260722130246.2135563-3-christian.gellermann@codasip.com
Link: https://pubs.opengroup.org/onlinepubs/9799919799/functions/getline.html [1]
Fixes: 26b4224d9961 ("selftests: expanding more mlock selftest")
Signed-off-by: Chris Gellermann <christian.gellermann@codasip.com>
Acked-by: David Hildenbrand (arm) <david@kernel.org>
Reviewed-by: Lorenzo Stoakes <ljs@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/mm/mlock-random-test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/mm/mlock-random-test.c
+++ b/tools/testing/selftests/mm/mlock-random-test.c
@@ -84,7 +84,7 @@ int get_proc_locked_vm_size(void)
int get_proc_page_size(unsigned long addr)
{
FILE *smaps;
- char *line;
+ char *line = NULL;
unsigned long mmupage_size = 0;
size_t size;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 196/337] selftests/clone3: fix wild pointer access of getline due to missing init
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (193 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 195/337] selftests/mm: fix potential wild pointer access of getline due to missing init Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 197/337] scsi: scsi_debug: Fix REPORT ZONES alloc_len underflow OOB write Greg Kroah-Hartman
` (148 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Chris Gellermann,
David Hildenbrand (arm), Lorenzo Stoakes, Christian Brauner,
Liam R. Howlett, Michal Hocko, Mike Rapoport, Shuah Khan,
Suren Baghdasaryan, Vlastimil Babka, Andrew Morton
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chris Gellermann <christian.gellermann@codasip.com>
commit 8f6f9fd93cd7a5dd607ad5cd910476dd68fff3ed upstream.
Patch series "selftests: Add missing initalization of pointer passed to
getline", v2.
This patch (of 2):
Clone3_set_tid uses getline(&line, ...) in a loop to read the child's
process status. The code expects that getline allocates the buffer for
the line on the first loop iteration. According to the Open Group
Spec[1], char *line has to be null pointer for this:
> ssize_t getline(char **restrict lineptr, ...);
> If *lineptr is a null pointer or if the object pointed to by *lineptr
> is of insufficient size, an object shall be allocated as if by
malloc()
> or the object shall be reallocated as if by realloc()[...].
However, char *line is only declared, leading to an undefined value that
is potentially non-null. In an example run with Musl v1.2.6, the realloc
call[2] of getdelim, which implements getline, triggers a segfault:
./run_kselftest.sh --test clone3:clone3_set_tid
[ 1366.165898] kselftest: Running tests in clone3
...
[ 1367.799244] clone3_set_tid[811]: unhandled signal 11 code 0x1 at
0x0000000000000000 in libc.so[68184,3fbf69f000+4c000]
[ 1367.802808] CPU: 0 UID: 0 PID: 811 Comm: clone3_set_tid Not tainted
..
[ 1367.804188] epc: 0x0000003fbf6b0184
[ 1367.804188] ra : 0x0000003fbf6d4664
[ 1367.804188] sp : 0x0000003fce5f2e40
[ 1367.805314] gp : 0x0000002aaab0dfb8
[ 1367.805314] tp : 0x0000003fbf6f14a8
[ 1367.805314] t0 : 0x0000003fbf63d000
...
Looking at the realloc implementation, Musl mallocs for a null pointer
memory. But for a non-null pointer, it assumes it's passed a valid
pointer to the heap and tries to access its meta-data. This leads to the
segfault we see:
void *realloc(void *p, size_t n)
{
if (!p) return malloc(n);
if (size_overflows(n)) return 0;
struct meta *g = get_meta(p);
...
}
Fix this by properly initializing the line pointer to NULL.
Link: https://lore.kernel.org/20260722130246.2135563-1-christian.gellermann@codasip.com
Link: https://lore.kernel.org/20260722130246.2135563-2-christian.gellermann@codasip.com
Link: https://pubs.opengroup.org/onlinepubs/9799919799/functions/getline.html [1]
Link: https://git.musl-libc.org/cgit/musl/tree/src/stdio/getdelim.c#n38 [2]
Fixes: 41585bbeeef9 ("selftests: add tests for clone3() with *set_tid")
Signed-off-by: Chris Gellermann <christian.gellermann@codasip.com>
Acked-by: David Hildenbrand (arm) <david@kernel.org>
Reviewed-by: Lorenzo Stoakes <ljs@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/clone3/clone3_set_tid.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/clone3/clone3_set_tid.c
+++ b/tools/testing/selftests/clone3/clone3_set_tid.c
@@ -141,7 +141,7 @@ int main(int argc, char *argv[])
{
FILE *f;
char buf;
- char *line;
+ char *line = NULL;
int status;
int ret = -1;
size_t len = 0;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 197/337] scsi: scsi_debug: Fix REPORT ZONES alloc_len underflow OOB write
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (194 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 196/337] selftests/clone3: fix " Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 198/337] sctp: reject stale cookies with mismatched verification tags Greg Kroah-Hartman
` (147 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Damien Le Moal, Ibrahim Hashimov,
Bart Van Assche, Martin K. Petersen
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ibrahim Hashimov <security@auditcode.ai>
commit 93dde0bf2f39a0f9f57fd610aa3201ce5b753433 upstream.
resp_report_zones() sizes the reply buffer from the CDB allocation
length. The v3 fix rounds alloc_len up with ALIGN() before deriving the
descriptor count:
rep_max_zones = (ALIGN((u64)alloc_len, RZONES_DESC_HD) -
RZONES_DESC_HD) >> ilog2(RZONES_DESC_HD);
arr_len = (u64)RZONES_DESC_HD * (rep_max_zones + 1);
For alloc_len in 0xFFFFFFC1..0xFFFFFFFF, ALIGN() rounds up to
0x100000000, so arr_len is 4 GB. On 32-bit, kzalloc()'s size_t is 32-bit
and truncates 0x100000000 to 0; kzalloc(0) returns ZERO_SIZE_PTR, which
passes the !arr check, and desc = arr + 64 is then dereferenced in the
loop -> out-of-bounds write / panic.
Clamp rep_max_zones to devip->nr_zones. The loop already stops at
sdebug_capacity (after nr_zones zones), so a report can never hold more
than nr_zones descriptors; the clamp does not change the report, it only
bounds arr_len to (nr_zones + 1) * RZONES_DESC_HD, a real device
property that can never reach 0x100000000.
Fixes: 7db0e0c8190a ("scsi: scsi_debug: Fix buffer size of REPORT ZONES command")
Suggested-by: Damien Le Moal <dlemoal@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ibrahim Hashimov <security@auditcode.ai>
Assisted-by: AuditCode-AI:2026.07
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260712183739.83915-1-security@auditcode.ai
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/scsi/scsi_debug.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -5191,6 +5191,7 @@ static int resp_report_zones(struct scsi
u32 alloc_len, rep_opts, rep_len;
bool partial;
u64 lba, zs_lba;
+ u64 arr_len;
u8 *arr = NULL, *desc;
u8 *cmd = scp->cmnd;
struct sdeb_zone_state *zsp = NULL;
@@ -5212,9 +5213,12 @@ static int resp_report_zones(struct scsi
return check_condition_result;
}
- rep_max_zones = (alloc_len - 64) >> ilog2(RZONES_DESC_HD);
+ rep_max_zones = (ALIGN((u64)alloc_len, RZONES_DESC_HD) - RZONES_DESC_HD) >>
+ ilog2(RZONES_DESC_HD);
+ rep_max_zones = min_t(unsigned int, rep_max_zones, devip->nr_zones);
+ arr_len = (u64)RZONES_DESC_HD * (rep_max_zones + 1);
- arr = kzalloc(alloc_len, GFP_ATOMIC | __GFP_NOWARN);
+ arr = kzalloc(arr_len, GFP_ATOMIC | __GFP_NOWARN);
if (!arr) {
mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC,
INSUFF_RES_ASCQ);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 198/337] sctp: reject stale cookies with mismatched verification tags
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (195 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 197/337] scsi: scsi_debug: Fix REPORT ZONES alloc_len underflow OOB write Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 199/337] sctp: prevent peer transport count overflow Greg Kroah-Hartman
` (146 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Yuxiang Yang, Xin Long,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yuxiang Yang <yangyx22@mails.tsinghua.edu.cn>
commit 9d8da8e0a9bce4a340af60dd0446bc7eb8d07587 upstream.
sctp_unpack_cookie() skips cookie expiration checks whenever an
association already exists. This is broader than the exception in
RFC 9260 Section 5.2.4.
For an existing association, Section 5.2.4 permits an expired State
Cookie only when both Verification Tags in the cookie match the current
association. Otherwise, the packet SHOULD be discarded and a Stale
Cookie ERROR MUST be sent.
The broad check lets an expired Action A restart cookie reach
sctp_sf_do_dupcook_a(). In a runtime test with the default 60 second
cookie lifetime, replaying such a cookie after 65 seconds returned a
COOKIE-ACK and restarted the association.
Check cookie expiration unless both Verification Tags match. This
preserves the Action D exception for a lost COOKIE ACK while rejecting
expired cookies in all other cases.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Yuxiang Yang <yangyx22@mails.tsinghua.edu.cn>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20260723225623.2658868-1-yangyx22@mails.tsinghua.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/sctp/sm_make_chunk.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1821,9 +1821,9 @@ no_hmac:
goto fail;
}
- /* Check to see if the cookie is stale. If there is already
- * an association, there is no need to check cookie's expiration
- * for init collision case of lost COOKIE ACK.
+ /* Check to see if the cookie is stale. RFC 9260 Section 5.2.4
+ * exempts an expired cookie only when both Verification Tags match
+ * the current association.
* If skb has been timestamped, then use the stamp, otherwise
* use current time. This introduces a small possibility that
* a cookie may be considered expired, but this would only slow
@@ -1834,7 +1834,10 @@ no_hmac:
else
kt = ktime_get_real();
- if (!asoc && ktime_before(bear_cookie->expiration, kt)) {
+ if ((!asoc ||
+ asoc->c.my_vtag != bear_cookie->my_vtag ||
+ asoc->c.peer_vtag != bear_cookie->peer_vtag) &&
+ ktime_before(bear_cookie->expiration, kt)) {
suseconds_t usecs = ktime_to_us(ktime_sub(kt, bear_cookie->expiration));
__be32 n = htonl(usecs);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 199/337] sctp: prevent peer transport count overflow
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (196 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 198/337] sctp: reject stale cookies with mismatched verification tags Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 200/337] hwmon: (npcm750-pwm-fan): stop fan timer on device detach Greg Kroah-Hartman
` (145 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Asim Viladi Oglu Manizada, Xin Long,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Asim Viladi Oglu Manizada <manizada@pm.me>
commit bd0e9289e2642f6a5c54faad304ce0f41e926d22 upstream.
sctp_assoc_add_peer() increments the association's 16-bit transport_count
for every new unique peer. Adding the 65,536th transport wraps the count to
zero.
SCTP sock_diag uses transport_count to reserve the INET_DIAG_PEERS payload,
then copies one sockaddr_storage for every entry in transport_addr_list.
After the wrap, a diagnostic dump reserves an empty payload and writes
8 MiB of peer addresses past the skb tail.
Reject a new unique peer when transport_count has reached U16_MAX. Perform
the check after the existing-peer lookup so a duplicate address continues
to return its existing transport at the limit.
Fixes: 8f840e47f190 ("sctp: add the sctp_diag.c file")
Cc: stable@vger.kernel.org
Signed-off-by: Asim Viladi Oglu Manizada <manizada@pm.me>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20260725032053.521705-1-manizada@pm.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/sctp/associola.c | 3 +++
1 file changed, 3 insertions(+)
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -614,6 +614,9 @@ struct sctp_transport *sctp_assoc_add_pe
return peer;
}
+ if (asoc->peer.transport_count == U16_MAX)
+ return NULL;
+
peer = sctp_transport_new(asoc->base.net, addr, gfp);
if (!peer)
return NULL;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 200/337] hwmon: (npcm750-pwm-fan): stop fan timer on device detach
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (197 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 199/337] sctp: prevent peer transport count overflow Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 201/337] hwmon: (pmbus/core) notify on the hwmon device, not the i2c client Greg Kroah-Hartman
` (144 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Hongyan Xu, Guenter Roeck
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hongyan Xu <getshell@seu.edu.cn>
commit f27f6976ea269219c1259a7c2f8c6dfe782540a3 upstream.
When a fan tach channel is present, npcm7xx_pwm_fan_probe() starts
fan_timer. The timer callback polls tach state and rearms the timer, but
the driver has no remove callback or devm cleanup action to stop it. On
device detach, the devm-managed driver data and I/O mappings can be
released while the timer is still pending or running.
Register a devm cleanup action before starting the timer and shut the
timer down synchronously from that action.
This issue was found by a static analysis tool.
Fixes: f1fd4a4db777 ("hwmon: Add NPCM7xx PWM and Fan driver")
Cc: stable@vger.kernel.org
Signed-off-by: Hongyan Xu <getshell@seu.edu.cn>
Link: https://lore.kernel.org/r/20260729100116.790-1-getshell@seu.edu.cn
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hwmon/npcm750-pwm-fan.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/drivers/hwmon/npcm750-pwm-fan.c
+++ b/drivers/hwmon/npcm750-pwm-fan.c
@@ -364,6 +364,11 @@ static void npcm7xx_fan_polling(struct t
add_timer(&data->fan_timer);
}
+static void npcm7xx_fan_cleanup(void *timer)
+{
+ timer_shutdown_sync(timer);
+}
+
static inline void npcm7xx_fan_compute(struct npcm7xx_pwm_fan_data *data,
u8 fan, u8 cmp, u8 fan_id, u8 flag_int,
u8 flag_mode, u8 flag_clear)
@@ -1027,6 +1032,12 @@ static int npcm7xx_pwm_fan_probe(struct
msecs_to_jiffies(NPCM7XX_FAN_POLL_TIMER_200MS);
timer_setup(&data->fan_timer,
npcm7xx_fan_polling, 0);
+ ret = devm_add_action_or_reset(dev,
+ npcm7xx_fan_cleanup,
+ &data->fan_timer);
+ if (ret)
+ return ret;
+
add_timer(&data->fan_timer);
break;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 201/337] hwmon: (pmbus/core) notify on the hwmon device, not the i2c client
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (198 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 200/337] hwmon: (npcm750-pwm-fan): stop fan timer on device detach Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 202/337] i2c: amd-mp2: Unregister callback on adapter add failure Greg Kroah-Hartman
` (143 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Vincent Jardin, Guenter Roeck
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vincent Jardin <vjardin@free.fr>
commit a64a7e8a0b012ba81b0eadbd7afc84ab0dbfd70c upstream.
pmbus_notify() calls sysfs_notify() and kobject_uevent() on the i2c
client's kobject, but the alarm attributes live on the hwmon class
device registered by pmbus_do_probe(). Notifying the parent i2c device
is a no-op for both poll(POLLPRI) waiters and udev listeners: the named
attribute does not exist on that kobject.
Notify the hwmon device instead, so poll() wakes up and "change"
uevents fire on the inX_alarm/tempX_alarm attributes when SMBALERT#
reports a fault.
Fixes: f469bde9afd1 ("hwmon: (pmbus/core) Notify hwmon events")
Cc: stable@vger.kernel.org # v6.4+
Signed-off-by: Vincent Jardin <vjardin@free.fr>
Link: https://lore.kernel.org/r/20260723-fix_hwmon_notify_v1-v1-1-5a24c528686d@free.fr
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hwmon/pmbus/pmbus_core.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2930,8 +2930,9 @@ static void pmbus_notify(struct pmbus_da
if (reg == sreg && page == spage && (smask & flags)) {
dev_dbg(data->dev, "sysfs notify: %s", da->attr.name);
- sysfs_notify(&data->dev->kobj, NULL, da->attr.name);
- kobject_uevent(&data->dev->kobj, KOBJ_CHANGE);
+ sysfs_notify(&data->hwmon_dev->kobj, NULL,
+ da->attr.name);
+ kobject_uevent(&data->hwmon_dev->kobj, KOBJ_CHANGE);
flags &= ~smask;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 202/337] i2c: amd-mp2: Unregister callback on adapter add failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (199 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 201/337] hwmon: (pmbus/core) notify on the hwmon device, not the i2c client Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 203/337] gpio: pca953x: fix cache_only and IRQ state on restore_context() failure Greg Kroah-Hartman
` (142 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Ijae Kim, Myeonghun Pak, Andi Shyti
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Myeonghun Pak <mhun512@gmail.com>
commit 82048795242f04275a3f49ffc66ad851b6120954 upstream.
amd_mp2_register_cb() stores the platform I2C context in the MP2 PCI
driver's callback table before the adapter is registered. If
i2c_add_adapter() fails, probe returns and devres frees the context,
but the PCI driver can still dereference the stale pointer from its IRQ
and system-sleep callbacks.
Unregister the callback before returning the adapter registration error.
Fixes: 529766e0a011 ("i2c: Add drivers for the AMD PCIe MP2 I2C controller")
Co-developed-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
Cc: <stable@vger.kernel.org> # v5.2+
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260721144147.31150-1-mhun512@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/i2c/busses/i2c-amd-mp2-plat.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/i2c/busses/i2c-amd-mp2-plat.c
+++ b/drivers/i2c/busses/i2c-amd-mp2-plat.c
@@ -316,8 +316,10 @@ static int i2c_amd_probe(struct platform
amd_mp2_pm_runtime_put(mp2_dev);
- if (ret < 0)
+ if (ret < 0) {
dev_err(&pdev->dev, "i2c add adapter failed = %d\n", ret);
+ amd_mp2_unregister_cb(&i2c_dev->common);
+ }
return ret;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 203/337] gpio: pca953x: fix cache_only and IRQ state on restore_context() failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (200 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 202/337] i2c: amd-mp2: Unregister callback on adapter add failure Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 204/337] cpufreq: powernow-k8: Fix possible memory leak in powernowk8_cpu_init() Greg Kroah-Hartman
` (141 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Linus Walleij, bui duc phuc,
Bartosz Golaszewski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: bui duc phuc <phucduc.bui@gmail.com>
commit d233087c19f6607ef926ac3f47d776e2406ffd1f upstream.
When pca953x_restore_context() fails, cache_only is left disabled and
the IRQ left enabled, even though register synchronization may not have
completed successfully. Restore cache_only and disable the IRQ again on
failure, matching the state set by pca953x_save_context().
Fixes: ec5bde62019b ("gpio: pca953x: Split pca953x_restore_context() and pca953x_save_context()")
Fixes: 3e38f946062b ("gpio: pca953x: fix IRQ storm on system wake up")
Cc: stable@vger.kernel.org
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260727080205.16353-1-phucduc.bui@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpio/gpio-pca953x.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -1256,9 +1256,20 @@ static int pca953x_restore_context(struc
regcache_mark_dirty(chip->regmap);
ret = pca953x_regcache_sync(chip);
if (ret)
- return ret;
+ goto err;
- return regcache_sync(chip->regmap);
+ ret = regcache_sync(chip->regmap);
+ if (ret)
+ goto err;
+
+ return 0;
+
+err:
+ if (chip->client->irq > 0)
+ disable_irq(chip->client->irq);
+ regcache_cache_only(chip->regmap, true);
+
+ return ret;
}
static void pca953x_save_context(struct pca953x_chip *chip)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 204/337] cpufreq: powernow-k8: Fix possible memory leak in powernowk8_cpu_init()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (201 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 203/337] gpio: pca953x: fix cache_only and IRQ state on restore_context() failure Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 205/337] cpufreq: schedutil: Publish util hooks only after all sg_cpu are initialized Greg Kroah-Hartman
` (140 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Abdun Nihaal, Viresh Kumar,
Zhongqiu Han, Rafael J. Wysocki
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Abdun Nihaal <nihaal@cse.iitm.ac.in>
commit d5f8e5f6040d052d44fcbf4f31dd35145c0c8d7d upstream.
The memory allocated for data->powernow_table inside
powernow_k8_cpu_init_acpi() or find_psb_table() is not freed in one of
the error paths in powernowk8_cpu_init(). Fix that by adding a kfree().
Fixes: 1ff6e97f1d99 ("[CPUFREQ] cpumask: avoid playing with cpus_allowed in powernow-k8.c")
Cc: stable@vger.kernel.org
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Link: https://patch.msgid.link/20260727093553.98246-1-nihaal@cse.iitm.ac.in
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/cpufreq/powernow-k8.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/cpufreq/powernow-k8.c
+++ b/drivers/cpufreq/powernow-k8.c
@@ -1083,6 +1083,7 @@ static int powernowk8_cpu_init(struct cp
err_out_exit_acpi:
powernow_k8_cpu_exit_acpi(data);
+ kfree(data->powernow_table);
err_out:
kfree(data);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 205/337] cpufreq: schedutil: Publish util hooks only after all sg_cpu are initialized
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (202 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 204/337] cpufreq: powernow-k8: Fix possible memory leak in powernowk8_cpu_init() Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 206/337] power: supply: bq25890: fix the -10 C NTC lookup entry Greg Kroah-Hartman
` (139 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Zhongqiu Han, Christian Loehle,
Rafael J. Wysocki
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
commit f0a3f042293a8c5a2152346b3637ea60866c503a upstream.
Commit 16a03c71bba0 ("cpufreq: schedutil: Merge initialization code of
sg_cpu in single loop") merged the per-CPU initialization and the
utilization-hook registration into a single loop in sugov_start().
For a shared cpufreq policy this re-introduces the race originally fixed
by commit ab2f7cf141aa ("cpufreq: schedutil: Fix sugov_start() versus
sugov_update_shared() race").
The scheduler's util path reaches the hook under RCU-sched and never takes
policy->rwsem, so the rwsem held across sugov_start() cannot serialize the
two. Once the first CPU's hook is published, sugov_update_shared() may run
and, via sugov_next_freq_shared(), read/write each sibling sugov_cpu
(iowait_boost, util, bw_min, ...) concurrently with the memset() still
initializing them, with no lock common to both sides: the update side holds
sg_policy->update_lock while the init side holds only policy->rwsem, which
the scheduler's util path never takes.
The walk only accesses scalar members, never a pointer like ->sg_policy,
so it does not crash today; it merely uses stale (or zero on first start)
values that skew the frequency selection and tracepoints. It is still a
genuine data race, and a latent crash once any pointer member is
dereferenced there.
Restore the two-phase approach: initialize all per-CPU structures first,
and only then publish the per-CPU utilization update hooks.
Fixes: 16a03c71bba0 ("cpufreq: schedutil: Merge initialization code of sg_cpu in single loop")
Cc: stable@vger.kernel.org
Signed-off-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/20260716115159.848403-1-zhongqiu.han@oss.qualcomm.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/sched/cpufreq_schedutil.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -880,8 +880,19 @@ static int sugov_start(struct cpufreq_po
memset(sg_cpu, 0, sizeof(*sg_cpu));
sg_cpu->cpu = cpu;
sg_cpu->sg_policy = sg_policy;
+ }
+
+ /*
+ * Publish the hooks only after all per-CPU data is initialized, so a
+ * shared policy's sugov_update_shared() never reads an uninitialized
+ * sibling sugov_cpu.
+ */
+ for_each_cpu(cpu, policy->cpus) {
+ struct sugov_cpu *sg_cpu = &per_cpu(sugov_cpu, cpu);
+
cpufreq_add_update_util_hook(cpu, &sg_cpu->update_util, uu);
}
+
return 0;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 206/337] power: supply: bq25890: fix the -10 C NTC lookup entry
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (203 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 205/337] cpufreq: schedutil: Publish util hooks only after all sg_cpu are initialized Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 207/337] power: supply: max17040: handle missing status supplier Greg Kroah-Hartman
` (138 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Xu Rao, Sebastian Reichel
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xu Rao <raoxu@uniontech.com>
commit 160a783aa65b74782bc17cb874af1a6d3f5fba3c upstream.
The TSPCT lookup table is monotonically decreasing except for ADC code
121, where the sequence reads -9.0 C, -1.0 C, -12.0 C. This makes the
reported battery temperature jump upward by eight degrees for one code
and then downward by eleven degrees for the next code.
The entry is a missing zero: use -10.0 C so the sequence remains
monotonic between -9.0 C and -12.0 C.
Fixes: 9652c02428f3 ("power: bq25890: add POWER_SUPPLY_PROP_TEMP")
Cc: stable@vger.kernel.org
Signed-off-by: Xu Rao <raoxu@uniontech.com>
Link: https://patch.msgid.link/0619C8BF15F43B7C+20260723065444.1796002-1-raoxu@uniontech.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/power/supply/bq25890_charger.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/power/supply/bq25890_charger.c
+++ b/drivers/power/supply/bq25890_charger.c
@@ -320,7 +320,7 @@ static const u32 bq25890_tspct_tbl[] = {
145, 140, 130, 120, 115, 110, 100, 90,
80, 70, 60, 50, 40, 30, 20, 10,
0, -10, -20, -30, -40, -60, -70, -80,
- -90, -10, -120, -140, -150, -170, -190, -210,
+ -90, -100, -120, -140, -150, -170, -190, -210,
};
#define BQ25890_TSPCT_TBL_SIZE ARRAY_SIZE(bq25890_tspct_tbl)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 207/337] power: supply: max17040: handle missing status supplier
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (204 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 206/337] power: supply: bq25890: fix the -10 C NTC lookup entry Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 208/337] s390/pci: Fix s390_pci_mmio_write syscall error return without MIO Greg Kroah-Hartman
` (137 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Jianing Li, Sebastian Reichel
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jianing Li <m13940358460@163.com>
commit 725668c6b6aa3971fe850659102c250d0d676e18 upstream.
MAX17040 does not report charger state itself, so the driver forwards
POWER_SUPPLY_PROP_STATUS to a supplier power supply. If no supplier is
registered, power_supply_get_property_from_supplier() returns -ENODEV and
leaves the output value untouched.
max17040_get_property() currently ignores that error and returns success,
so userspace can read an uninitialized status value from the battery power
supply. This happens on systems that use the fuel gauge without a charger
supplier relationship in firmware.
Return POWER_SUPPLY_STATUS_UNKNOWN when no supplier provides STATUS, and
propagate other supplier lookup errors.
Fixes: f4b782af61ae ("power: max17040: pass status property from supplier")
Cc: stable@vger.kernel.org # 6.7+
Signed-off-by: Jianing Li <m13940358460@163.com>
Link: https://patch.msgid.link/20260701061042.1008-1-m13940358460@163.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/power/supply/max17040_battery.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/power/supply/max17040_battery.c
+++ b/drivers/power/supply/max17040_battery.c
@@ -405,7 +405,11 @@ static int max17040_get_property(struct
val->intval = chip->low_soc_alert;
break;
case POWER_SUPPLY_PROP_STATUS:
- power_supply_get_property_from_supplier(psy, psp, val);
+ ret = power_supply_get_property_from_supplier(psy, psp, val);
+ if (ret == -ENODEV)
+ val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
+ else if (ret)
+ return ret;
break;
case POWER_SUPPLY_PROP_TEMP:
if (!chip->channel_temp)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 208/337] s390/pci: Fix s390_pci_mmio_write syscall error return without MIO
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (205 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 207/337] power: supply: max17040: handle missing status supplier Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 209/337] s390/qeth: Check CAP_NET_ADMIN for private ioctls Greg Kroah-Hartman
` (136 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Julian Ruess, Farhan Ali,
Niklas Schnelle, Vasily Gorbik
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Niklas Schnelle <schnelle@linux.ibm.com>
commit b7ab86bdc65eadcfc43a0e3faf682a3f750cfb96 upstream.
On a machine without PCI memory-I/O (MIO) support or when running with
pci=nomio the s390 specific PCI MMIO write syscall checks if the MMIO
cookie is above ZPCI_IOMAP_ADDR_BASE as a sanity check before even
trying to perform the MMIO. If this check fails the return value was
left unchanged and thus 0 from prior operations falsely indicating
success. This could potentially confuse user-space into falsely
believing the MMIO, on a mapping not valid for MMIO was successful.
Fix this by setting the return value to -EFAULT prior to the check
following the same pattern as elsewhere in the same function.
Cc: stable@vger.kernel.org
Reviewed-by: Julian Ruess <julianr@linux.ibm.com>
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Fixes: a67a88b0b8de ("s390/pci: remove races against pte updates")
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/s390/pci/pci_mmio.c | 1 +
1 file changed, 1 insertion(+)
--- a/arch/s390/pci/pci_mmio.c
+++ b/arch/s390/pci/pci_mmio.c
@@ -178,6 +178,7 @@ SYSCALL_DEFINE3(s390_pci_mmio_write, uns
goto out_unlock_mmap;
}
+ ret = -EFAULT;
io_addr = (void __iomem *)((args.pfn << PAGE_SHIFT) |
(mmio_addr & ~PAGE_MASK));
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 209/337] s390/qeth: Check CAP_NET_ADMIN for private ioctls
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (206 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 208/337] s390/pci: Fix s390_pci_mmio_write syscall error return without MIO Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 210/337] s390/dasd: Fix potential NULL pointer dereference Greg Kroah-Hartman
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343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian Borntraeger,
Alexandra Winter, Aswin Karuvally, Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aswin Karuvally <aswin@linux.ibm.com>
commit d211028bac1bd0fff0026bfa2a8328e5b78cd0e6 upstream.
Gate the SIOCDEVPRIVATE ioctl commands SIOC_QETH_ADP_SET_SNMP_CONTROL,
SIOC_QETH_GET_CARD_TYPE and SIOC_QETH_QUERY_OAT with CAP_NET_ADMIN
capable check to ensure unprivileged users cannot invoke them.
Fixes: 18787eeebd71 ("qeth: use ndo_siocdevprivate")
Cc: stable@vger.kernel.org
Suggested-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Aswin Karuvally <aswin@linux.ibm.com>
Link: https://patch.msgid.link/20260723140050.762991-1-aswin@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/s390/net/qeth_core_main.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -6526,6 +6526,9 @@ int qeth_siocdevprivate(struct net_devic
struct qeth_card *card = dev->ml_priv;
int rc = 0;
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
switch (cmd) {
case SIOC_QETH_ADP_SET_SNMP_CONTROL:
rc = qeth_snmp_command(card, data);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 210/337] s390/dasd: Fix potential NULL pointer dereference
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (207 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 209/337] s390/qeth: Check CAP_NET_ADMIN for private ioctls Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 211/337] s390/dasd: Fix undersized format-check buffer Greg Kroah-Hartman
` (134 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Vasily Gorbik, Eduard Shishkin,
Stefan Haberland, Jan Höppner, Jens Axboe
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jan Höppner <hoeppner@linux.ibm.com>
commit 9973026f572db6b67570cadc30942f3014e41079 upstream.
dasd_release_space() checks the implementation of the is_ese()
discipline function before calling it to determine if a given device is
an ESE DASD.
The current usage of the logical AND operator will lead to a NULL
pointer dereference as the function is called even if the function
pointer is NULL.
Fix this by using the logical OR operator.
Fixes: 91dc4a197569 ("s390/dasd: Add new ioctl to release space")
Cc: stable@vger.kernel.org # v5.3+
Reported-by: Vasily Gorbik <gor@linux.ibm.com>
Acked-by: Eduard Shishkin <edward6@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://patch.msgid.link/20260727142840.567286-3-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/s390/block/dasd_ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -324,7 +324,7 @@ out_err:
static int dasd_release_space(struct dasd_device *device,
struct format_data_t *rdata)
{
- if (!device->discipline->is_ese && !device->discipline->is_ese(device))
+ if (!device->discipline->is_ese || !device->discipline->is_ese(device))
return -ENOTSUPP;
if (!device->discipline->release_space)
return -ENOTSUPP;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 211/337] s390/dasd: Fix undersized format-check buffer
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (208 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 210/337] s390/dasd: Fix potential NULL pointer dereference Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 212/337] s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs Greg Kroah-Hartman
` (133 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jan Höppner, Stefan Haberland,
Jens Axboe
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Stefan Haberland <sth@linux.ibm.com>
commit 7f40b346462f563a0d6e841a77b5163d2a882a04 upstream.
fmt_buffer_size in dasd_eckd_check_device_format() is declared as
int, even though one of the multiplicands, sizeof(struct eckd_count),
is a size_t. The expression
trkcount * rpt_max * sizeof(struct eckd_count)
is therefore correctly evaluated at 64-bit width, but the result is
silently truncated when it is stored back into the 32-bit
fmt_buffer_size variable. For a sufficiently large track range
(start_unit/stop_unit are caller-controlled) this truncation
yields a buffer size far smaller than the number of tracks actually
requested. kzalloc() then succeeds with an undersized allocation,
while the subsequent channel program build still operates on the
untruncated track count and writes past the end of that buffer.
Compute the buffer size with check_mul_overflow() and keep it in a
size_t, so that a value that no longer fits results in -EINVAL
instead of a silently truncated allocation size.
Fixes: 8fd575200db5 ("s390/dasd: Add new ioctl BIODASDCHECKFMT")
Cc: stable@vger.kernel.org #4.7
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://patch.msgid.link/20260727142840.567286-4-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/s390/block/dasd_eckd.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -21,6 +21,7 @@
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/io.h>
+#include <linux/overflow.h>
#include <asm/css_chars.h>
#include <asm/debug.h>
@@ -3475,11 +3476,11 @@ static int dasd_eckd_check_device_format
{
struct dasd_eckd_private *private = base->private;
struct eckd_count *fmt_buffer;
- struct irb irb;
+ size_t fmt_buffer_size;
+ unsigned int trkcount;
int rpt_max, rpt_exp;
- int fmt_buffer_size;
+ struct irb irb;
int trk_per_cyl;
- int trkcount;
int tpm = 0;
int rc;
@@ -3490,7 +3491,9 @@ static int dasd_eckd_check_device_format
rpt_exp = recs_per_track(&private->rdc_data, 0, cdata->expect.blksize);
trkcount = cdata->expect.stop_unit - cdata->expect.start_unit + 1;
- fmt_buffer_size = trkcount * rpt_max * sizeof(struct eckd_count);
+ if (check_mul_overflow(trkcount, rpt_max, &fmt_buffer_size) ||
+ check_mul_overflow(fmt_buffer_size, sizeof(struct eckd_count), &fmt_buffer_size))
+ return -EINVAL;
fmt_buffer = kzalloc(fmt_buffer_size, GFP_KERNEL | GFP_DMA);
if (!fmt_buffer)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 212/337] s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (209 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 211/337] s390/dasd: Fix undersized format-check buffer Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 213/337] s390/zcrypt: Validate length for CCA AES cipher key requests Greg Kroah-Hartman
` (132 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Finn Callies, Harald Freudenberger,
Vasily Gorbik
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Harald Freudenberger <freude@linux.ibm.com>
commit 983279d7f86ade73db86f886e09172dd567031b5 upstream.
There is a wrong upper limit check for the domain value when an EP11
CPRB is processed for sending to a crypto card. This check is only
active on custom device nodes but may lead to access heap memory
behind perms->adm when an administrative CPRB is sent.
Add correct limit (AP_DOMAINS = 256) checking to fix this.
Fixes: cfd68b33094e ("s390/zcrypt: Filter admin CPRBs on custom devices")
Cc: stable@vger.kernel.org
Reviewed-by: Finn Callies <fcallies@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/s390/crypto/zcrypt_api.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -1071,7 +1071,7 @@ static long _zcrypt_send_ep11_cprb(bool
print_hex_dump_debug("ep11req: ", DUMP_PREFIX_ADDRESS, 16, 1,
ap_msg.msg, ap_msg.len, false);
- if (perms != &ap_perms && domain < AUTOSEL_DOM) {
+ if (perms != &ap_perms && domain < AP_DOMAINS) {
if (ap_msg.flags & AP_MSG_FLAG_ADMIN) {
if (!test_bit_inv(domain, perms->adm)) {
rc = -ENODEV;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 213/337] s390/zcrypt: Validate length for CCA AES cipher key requests
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (210 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 212/337] s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 214/337] s390/zcrypt: Validate length for CCA ECC private " Greg Kroah-Hartman
` (131 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Holger Dengler, Harald Freudenberger,
Vasily Gorbik
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Holger Dengler <dengler@linux.ibm.com>
commit 06afe425d5283b9764303de47f554da5a808ce8a upstream.
cca_cipher2protkey() derives the copy length for the CPRB parameter
block directly from the length field in the key token. Reject the
request early if the token length exceeds the available space in the
parameter block.
Fixes: 4bc123b18ce6 ("s390/zcrypt: Add low level functions for CCA AES cipher keys")
Signed-off-by: Holger Dengler <dengler@linux.ibm.com>
Cc: stable@vger.kernel.org # 5.4+
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/s390/crypto/zcrypt_ccamisc.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/s390/crypto/zcrypt_ccamisc.c
+++ b/drivers/s390/crypto/zcrypt_ccamisc.c
@@ -1218,6 +1218,9 @@ int cca_cipher2protkey(u16 cardnr, u16 d
} __packed * prepparm;
int keytoklen = ((struct cipherkeytoken *)ckey)->len;
+ if (keytoklen > PARMBSIZE - sizeof(struct aureqparm))
+ return -EINVAL;
+
/* get already prepared memory for 2 cprbs with param block each */
rc = alloc_and_prep_cprbmem(PARMBSIZE, &mem, &preqcblk, &prepcblk);
if (rc)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 214/337] s390/zcrypt: Validate length for CCA ECC private key requests
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (211 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 213/337] s390/zcrypt: Validate length for CCA AES cipher key requests Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 215/337] phy: zynqmp: fix L0_TM_DISABLE_SCRAMBLE_ENCODER mask Greg Kroah-Hartman
` (130 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Holger Dengler, Harald Freudenberger,
Vasily Gorbik
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Holger Dengler <dengler@linux.ibm.com>
commit a9ae0f6dd45c3ccc1d69363f7aea8af179122730 upstream.
cca_ecc2protkey() derives the copy length for the CPRB parameter
block directly from the length field in the key token. Reject the
request early if the token length exceeds the available space in the
parameter block.
Fixes: fa6999e326fe ("s390/pkey: support CCA and EP11 secure ECC private keys")
Signed-off-by: Holger Dengler <dengler@linux.ibm.com>
Cc: stable@vger.kernel.org # 5.10+
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/s390/crypto/zcrypt_ccamisc.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/s390/crypto/zcrypt_ccamisc.c
+++ b/drivers/s390/crypto/zcrypt_ccamisc.c
@@ -1384,6 +1384,9 @@ int cca_ecc2protkey(u16 cardnr, u16 doma
} __packed * prepparm;
int keylen = ((struct eccprivkeytoken *)key)->len;
+ if (keylen > PARMBSIZE - sizeof(struct aureqparm))
+ return -EINVAL;
+
/* get already prepared memory for 2 cprbs with param block each */
rc = alloc_and_prep_cprbmem(PARMBSIZE, &mem, &preqcblk, &prepcblk);
if (rc)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 215/337] phy: zynqmp: fix L0_TM_DISABLE_SCRAMBLE_ENCODER mask
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (212 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 214/337] s390/zcrypt: Validate length for CCA ECC private " Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 216/337] phy: zynqmp: use read-modify-write for SERDES scrambler bypass Greg Kroah-Hartman
` (129 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Nava kishore Manne,
Radhey Shyam Pandey, Michal Simek, Vinod Koul
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nava kishore Manne <nava.kishore.manne@amd.com>
commit 6cb22477929489a412df8d153e550e77a012e701 upstream.
The L0_TX_DIG_61 register bit 2 is a reserved read-only field.
The previous mask value 0x0f incorrectly included bit 2, causing
unintended writes to a reserved bit on every scrambler bypass
operation.
Correct the mask to (BIT(3) | GENMASK(1, 0)) to cover only the
valid scramble bypass control bits.
Fixes: 4a33bea00314 ("phy: zynqmp: Add PHY driver for the Xilinx ZynqMP Gigabit Transceiver")
Cc: stable@vger.kernel.org
Signed-off-by: Nava kishore Manne <nava.kishore.manne@amd.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260627155229.2791113-2-radhey.shyam.pandey@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/phy/xilinx/phy-zynqmp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -53,7 +53,7 @@
#define L0_TM_DIG_6 0x106c
#define L0_TM_DIS_DESCRAMBLE_DECODER 0x0f
#define L0_TX_DIG_61 0x00f4
-#define L0_TM_DISABLE_SCRAMBLE_ENCODER 0x0f
+#define L0_TM_DISABLE_SCRAMBLE_ENCODER (BIT(3) | GENMASK(1, 0))
/* PLL Test Mode register parameters */
#define L0_TM_PLL_DIG_37 0x2094
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 216/337] phy: zynqmp: use read-modify-write for SERDES scrambler bypass
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (213 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 215/337] phy: zynqmp: fix L0_TM_DISABLE_SCRAMBLE_ENCODER mask Greg Kroah-Hartman
@ 2026-08-07 14:36 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 217/337] phy: zynqmp: keep SERDES scrambler and 8b/10b enabled for USB Greg Kroah-Hartman
` (128 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:36 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Nava kishore Manne,
Radhey Shyam Pandey, Michal Simek, Vinod Koul
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nava kishore Manne <nava.kishore.manne@amd.com>
commit 21e0749f931702765b9d52d05740092bc87fcd8d upstream.
xpsgtr_bypass_scrambler_8b10b() used xpsgtr_write_phy() which performs
a full register write, silently clearing any bits beyond the intended
bypass control fields.
Switch to xpsgtr_clr_set_phy() with clr=mask, set=mask to set only
the bypass bits while preserving the remaining bits in each register.
Fixes: 4a33bea00314 ("phy: zynqmp: Add PHY driver for the Xilinx ZynqMP Gigabit Transceiver")
Cc: stable@vger.kernel.org
Signed-off-by: Nava kishore Manne <nava.kishore.manne@amd.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260627155229.2791113-3-radhey.shyam.pandey@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/phy/xilinx/phy-zynqmp.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -505,8 +505,12 @@ static void xpsgtr_lane_set_protocol(str
/* Bypass (de)scrambler and 8b/10b decoder and encoder. */
static void xpsgtr_bypass_scrambler_8b10b(struct xpsgtr_phy *gtr_phy)
{
- xpsgtr_write_phy(gtr_phy, L0_TM_DIG_6, L0_TM_DIS_DESCRAMBLE_DECODER);
- xpsgtr_write_phy(gtr_phy, L0_TX_DIG_61, L0_TM_DISABLE_SCRAMBLE_ENCODER);
+ xpsgtr_clr_set_phy(gtr_phy, L0_TM_DIG_6,
+ L0_TM_DIS_DESCRAMBLE_DECODER,
+ L0_TM_DIS_DESCRAMBLE_DECODER);
+ xpsgtr_clr_set_phy(gtr_phy, L0_TX_DIG_61,
+ L0_TM_DISABLE_SCRAMBLE_ENCODER,
+ L0_TM_DISABLE_SCRAMBLE_ENCODER);
}
/* DP-specific initialization. */
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 217/337] phy: zynqmp: keep SERDES scrambler and 8b/10b enabled for USB
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (214 preceding siblings ...)
2026-08-07 14:36 ` [PATCH 6.12 216/337] phy: zynqmp: use read-modify-write for SERDES scrambler bypass Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 218/337] net: openvswitch: fix potential UAF on meter attach failure Greg Kroah-Hartman
` (127 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Nava kishore Manne,
Radhey Shyam Pandey, Michal Simek, Vinod Koul
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nava kishore Manne <nava.kishore.manne@amd.com>
commit 7eb61caf45607e1e1270f51f8f93f0ded53146da upstream.
USB Gen1 requires scrambling and 8b/10b encoding to be performed in the
physical layer. Do not bypass PHY-side scrambler or encoder/decoder for
USB operation, as mandated by the USB 3.x specification.
Scrambler and 8b/10b bypass remain restricted to SATA and SGMII
modes, where encoding is handled in the controller.
Fixes: 4a33bea00314 ("phy: zynqmp: Add PHY driver for the Xilinx ZynqMP Gigabit Transceiver")
Cc: stable@vger.kernel.org
Signed-off-by: Nava kishore Manne <nava.kishore.manne@amd.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260627155229.2791113-4-radhey.shyam.pandey@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/phy/xilinx/phy-zynqmp.c | 39 +++++++++++++++++++++++++++++----------
1 file changed, 29 insertions(+), 10 deletions(-)
--- a/drivers/phy/xilinx/phy-zynqmp.c
+++ b/drivers/phy/xilinx/phy-zynqmp.c
@@ -502,15 +502,30 @@ static void xpsgtr_lane_set_protocol(str
}
}
-/* Bypass (de)scrambler and 8b/10b decoder and encoder. */
-static void xpsgtr_bypass_scrambler_8b10b(struct xpsgtr_phy *gtr_phy)
+/**
+ * xpsgtr_bypass_scrambler_8b10b - Configure scrambler/encoder behavior
+ * @gtr_phy: pointer to lane context
+ * @bypass: true to enable scrambler/encoder bypass (SATA/SGMII),
+ * false to disable scrambler/encoder bypass (USB3)
+ *
+ * Uses RMW to preserve reserved and unrelated register fields.
+ */
+static void xpsgtr_bypass_scrambler_8b10b(struct xpsgtr_phy *gtr_phy,
+ bool bypass)
{
- xpsgtr_clr_set_phy(gtr_phy, L0_TM_DIG_6,
- L0_TM_DIS_DESCRAMBLE_DECODER,
- L0_TM_DIS_DESCRAMBLE_DECODER);
- xpsgtr_clr_set_phy(gtr_phy, L0_TX_DIG_61,
- L0_TM_DISABLE_SCRAMBLE_ENCODER,
- L0_TM_DISABLE_SCRAMBLE_ENCODER);
+ if (bypass) {
+ xpsgtr_clr_set_phy(gtr_phy, L0_TM_DIG_6,
+ L0_TM_DIS_DESCRAMBLE_DECODER,
+ L0_TM_DIS_DESCRAMBLE_DECODER);
+ xpsgtr_clr_set_phy(gtr_phy, L0_TX_DIG_61,
+ L0_TM_DISABLE_SCRAMBLE_ENCODER,
+ L0_TM_DISABLE_SCRAMBLE_ENCODER);
+ } else {
+ xpsgtr_clr_set_phy(gtr_phy, L0_TM_DIG_6,
+ L0_TM_DIS_DESCRAMBLE_DECODER, 0);
+ xpsgtr_clr_set_phy(gtr_phy, L0_TX_DIG_61,
+ L0_TM_DISABLE_SCRAMBLE_ENCODER, 0);
+ }
}
/* DP-specific initialization. */
@@ -531,7 +546,7 @@ static void xpsgtr_phy_init_sata(struct
{
struct xpsgtr_dev *gtr_dev = gtr_phy->dev;
- xpsgtr_bypass_scrambler_8b10b(gtr_phy);
+ xpsgtr_bypass_scrambler_8b10b(gtr_phy, true);
writel(gtr_phy->lane, gtr_dev->siou + SATA_CONTROL_OFFSET);
}
@@ -547,7 +562,7 @@ static void xpsgtr_phy_init_sgmii(struct
xpsgtr_clr_set(gtr_dev, TX_PROT_BUS_WIDTH, mask, val);
xpsgtr_clr_set(gtr_dev, RX_PROT_BUS_WIDTH, mask, val);
- xpsgtr_bypass_scrambler_8b10b(gtr_phy);
+ xpsgtr_bypass_scrambler_8b10b(gtr_phy, true);
}
/* Configure TX de-emphasis and margining for DP. */
@@ -708,6 +723,10 @@ static int xpsgtr_phy_init(struct phy *p
case ICM_PROTOCOL_SGMII:
xpsgtr_phy_init_sgmii(gtr_phy);
break;
+
+ case ICM_PROTOCOL_USB:
+ xpsgtr_bypass_scrambler_8b10b(gtr_phy, false);
+ break;
}
goto out;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 218/337] net: openvswitch: fix potential UAF on meter attach failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (215 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 217/337] phy: zynqmp: keep SERDES scrambler and 8b/10b enabled for USB Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 219/337] net: openvswitch: fix skb leak on flow key update failure during recirculation Greg Kroah-Hartman
` (126 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ilya Maximets, Eelco Chaudron,
Paolo Abeni
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ilya Maximets <i.maximets@ovn.org>
commit a58a2b0ce354df531ebc71fc870058c2feb59f6b upstream.
While attaching a newly created meter attach_meter() function makes
the new meter visible to other CPUs but can still fail afterwards.
On failure, it detaches the meter back and returns an error.
However, this is an unexpected behavior for the ovs_meter_cmd_set()
that uses a plain kfree(meter) on attach failure without waiting for
RCU readers to stop using it, assuming it was never visible.
This is never a problem for ovs-vswitchd as it always creates meters
before creating any flows that use them. But the UAF can be triggered
with a custom application using uAPI:
BUG: KASAN: slab-use-after-free in ovs_meter_execute (net/openvswitch/meter.c:653)
Read of size 8 at addr ffff88810d152650 by task meter/2508
Call Trace:
ovs_meter_execute (net/openvswitch/meter.c:653)
do_execute_actions (net/openvswitch/actions.c:1407)
ovs_execute_actions (net/openvswitch/actions.c:1584)
ovs_packet_cmd_execute (net/openvswitch/datapath.c:703)
...
netlink_sendmsg (af_netlink.c:1900)
Allocated by task 2519:
__kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
ovs_meter_cmd_set (net/openvswitch/meter.c:422)
...
netlink_sendmsg (af_netlink.c:1900)
Freed by task 2519:
kfree (mm/slub.c:2705 mm/slub.c:6405 mm/slub.c:6720)
ovs_meter_cmd_set (net/openvswitch/meter.c:479)
...
netlink_sendmsg (af_netlink.c:1900)
Fix that by making sure attach_meter() doesn't make the meter visible
until all the checks are done and the function can't fail anymore.
This also makes sure the "hash" value is calculated after the potential
re-sizing of the table.
Reported by Trend Micro's Zero Day Initiative as ZDI-CAN-31642.
Fixes: c7c4c44c9a95 ("net: openvswitch: expand the meters supported number")
Cc: stable@vger.kernel.org
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Eelco Chaudron <echaudro@redhat.com>
Link: https://patch.msgid.link/20260727121022.198461-1-i.maximets@ovn.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/openvswitch/meter.c | 33 +++++++++++++++++++--------------
1 file changed, 19 insertions(+), 14 deletions(-)
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -133,18 +133,10 @@ static void dp_meter_instance_remove(str
static int attach_meter(struct dp_meter_table *tbl, struct dp_meter *meter)
{
- struct dp_meter_instance *ti = rcu_dereference_ovsl(tbl->ti);
- u32 hash = meter_hash(ti, meter->id);
+ struct dp_meter_instance *ti;
+ u32 hash;
int err;
- /* In generally, slots selected should be empty, because
- * OvS uses id-pool to fetch a available id.
- */
- if (unlikely(rcu_dereference_ovsl(ti->dp_meters[hash])))
- return -EBUSY;
-
- dp_meter_instance_insert(ti, meter);
-
/* That function is thread-safe. */
tbl->count++;
if (tbl->count >= tbl->max_meters_allowed) {
@@ -152,16 +144,29 @@ static int attach_meter(struct dp_meter_
goto attach_err;
}
- if (tbl->count >= ti->n_meters &&
- dp_meter_instance_realloc(tbl, ti->n_meters * 2)) {
- err = -ENOMEM;
+ ti = rcu_dereference_ovsl(tbl->ti);
+ if (tbl->count >= ti->n_meters) {
+ err = dp_meter_instance_realloc(tbl, ti->n_meters * 2);
+ if (err)
+ goto attach_err;
+
+ ti = rcu_dereference_ovsl(tbl->ti);
+ }
+
+ hash = meter_hash(ti, meter->id);
+
+ /* In general, selected slots should be empty, because
+ * OvS uses id-pool to fetch available ids.
+ */
+ if (unlikely(rcu_dereference_ovsl(ti->dp_meters[hash]))) {
+ err = -EBUSY;
goto attach_err;
}
+ dp_meter_instance_insert(ti, meter);
return 0;
attach_err:
- dp_meter_instance_remove(ti, meter);
tbl->count--;
return err;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 219/337] net: openvswitch: fix skb leak on flow key update failure during recirculation
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (216 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 218/337] net: openvswitch: fix potential UAF on meter attach failure Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 220/337] net: openvswitch: fix skb leak on flow key update failure during ct Greg Kroah-Hartman
` (125 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ilya Maximets, Aaron Conole,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ilya Maximets <i.maximets@ovn.org>
commit e1cf066244dad576221b7123a0e5005967f25a20 upstream.
do_execute_actions() returns right away when execute_recirc() fails on
the last action as it assumes this function always takes ownership of
the skb when 'last' is true. But when the flow key update fails, the
function doesn't free the skb and it ends up leaked.
This is a very unlikely scenario as it requires the packet to become
unparseable by applying a set of actions on a previously parseable skb,
but should be fixed nevertheless.
Reported by Sashiko.
Fixes: 971427f353f3 ("openvswitch: Add recirc and hash action.")
Cc: stable@vger.kernel.org
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20260727181851.306076-2-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/openvswitch/actions.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -1146,6 +1146,10 @@ static int execute_masked_set_action(str
return err;
}
+/* When 'last' is true, recirc() should always consume the 'skb'.
+ * Otherwise, recirc() should keep 'skb' intact regardless what
+ * actions are executed on recirculation.
+ */
static int execute_recirc(struct datapath *dp, struct sk_buff *skb,
struct sw_flow_key *key,
const struct nlattr *a, bool last)
@@ -1156,8 +1160,12 @@ static int execute_recirc(struct datapat
int err;
err = ovs_flow_key_update(skb, key);
- if (err)
+ if (err) {
+ if (last)
+ ovs_kfree_skb_reason(skb,
+ OVS_DROP_ACTION_ERROR);
return err;
+ }
}
BUG_ON(!is_flow_key_valid(key));
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 220/337] net: openvswitch: fix skb leak on flow key update failure during ct
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (217 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 219/337] net: openvswitch: fix skb leak on flow key update failure during recirculation Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 221/337] ice: wait for reset completion in ice_resume() Greg Kroah-Hartman
` (124 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ilya Maximets, Aaron Conole,
Jakub Kicinski
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ilya Maximets <i.maximets@ovn.org>
commit bc62e843bc48f933da765ce47079fd992e535794 upstream.
ovs_ct_execute() always steals or frees the skb on failure while
ovs_flow_key_update() does not. So, if it fails and we return right
away, the skb ends up leaked.
Fix that by breaking instead and letting the common error handling
code at the bottom of the loop to free the skb properly.
This is a very unlikely scenario as it requires the packet to become
unparseable by applying a set of actions on a previously parseable skb,
but should be fixed nevertheless.
Reported by Sashiko.
Fixes: ec0d043d05e6 ("openvswitch: Ensure flow is valid before executing ct")
Cc: stable@vger.kernel.org
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20260727181851.306076-3-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/openvswitch/actions.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -1418,7 +1418,7 @@ static int do_execute_actions(struct dat
if (!is_flow_key_valid(key)) {
err = ovs_flow_key_update(skb, key);
if (err)
- return err;
+ break;
}
err = ovs_ct_execute(ovs_dp_get_net(dp), skb, key,
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 221/337] ice: wait for reset completion in ice_resume()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (218 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 220/337] net: openvswitch: fix skb leak on flow key update failure during ct Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 222/337] ice: fix memory leak in ice_lbtest_prepare_rings() Greg Kroah-Hartman
` (123 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kohei Enju, Aleksandr Loktionov,
Przemek Kitszel, Aaron Ma, Alexander Nowlin, Tony Nguyen
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aaron Ma <aaron.ma@canonical.com>
commit c2816d613f388814d27bc9fd6dbd931a88056e19 upstream.
ice_resume() schedules an asynchronous PF reset and returns
immediately. The reset runs later in ice_service_task(). If
userspace tries to bring up the net device before the reset
finishes, ice_open() fails with -EBUSY:
ice_resume()
ice_schedule_reset() # sets ICE_PFR_REQ, returns
...
ice_open()
ice_is_reset_in_progress() # ICE_PFR_REQ still set, -EBUSY
...
ice_service_task()
ice_do_reset()
ice_rebuild() # clears ICE_PFR_REQ, too late
Reproduced on E800 series NICs during suspend/resume with irdma
enabled, where the aux device probe widens the race window.
ice 0000:81:00.0: can't open net device while reset is in progress
Add a best-effort wait (10s timeout, matching ice_devlink_info_get())
for the reset to complete before returning from ice_resume(). In
practice the reset completes in ~300ms.
Fixes: 769c500dcc1e ("ice: Add advanced power mgmt for WoL")
Cc: stable@vger.kernel.org
Reviewed-by: Kohei Enju <kohei@enjuk.jp>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Tested-by: Alexander Nowlin <alexander.nowlin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/ice/ice_main.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -5708,6 +5708,16 @@ static int ice_resume(struct device *dev
/* Restart the service task */
mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
+ /* Best-effort wait for the scheduled reset to finish so that the
+ * device is operational before returning. Without this, userspace
+ * (e.g. NetworkManager) may try to open the net device while the
+ * asynchronous reset is still in progress, hitting -EBUSY.
+ */
+ ret = ice_wait_for_reset(pf, secs_to_jiffies(10));
+ if (ret)
+ dev_err(dev, "Wait for reset timed out (10s) during resume: %d\n",
+ ret);
+
return 0;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 222/337] ice: fix memory leak in ice_lbtest_prepare_rings()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (219 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 221/337] ice: wait for reset completion in ice_resume() Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 223/337] i2c: jz4780: Cache host clock rate at probe to prevent CCF prepare_lock deadlock Greg Kroah-Hartman
` (122 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Dawei Feng, Jacob Keller,
Tony Nguyen, Rinitha S
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dawei Feng <dawei.feng@seu.edu.cn>
commit 3a9de5590da4ffd9e9c541c4c4d492aa2b54cf6e upstream.
ice_lbtest_prepare_rings() frees Rx rings only when
ice_vsi_start_all_rx_rings() fails. If ice_vsi_setup_rx_rings() fails
after allocating some descriptors, or if ice_vsi_cfg_lan() fails after
the Rx rings were prepared, the function reaches the Tx cleanup path
without releasing the initialized Rx resources.
Fix this by adding separate unwind paths for Rx setup failure and LAN
configuration failure. The Rx setup failure path releases the partially
prepared Rx rings before freeing Tx rings, while later failures first
undo the LAN Tx configuration and then release the Rx rings in reverse
setup order.
The bug was first flagged by an experimental analysis tool we are
developing for kernel memory-management bugs while analyzing
v6.13-rc1. The tool is still under development and is not yet publicly
available. Manual inspection confirms that the bug is still
present in v7.1-rc7.
An x86_64 allyesconfig build showed no new warnings. As we do not have an
Intel E800 Series adapter available to run the ethtool offline loopback
selftest, no runtime testing was able to be performed.
Fixes: 0e674aeb0b77 ("ice: Add handler for ethtool selftest")
Cc: stable@vger.kernel.org
Signed-off-by: Dawei Feng <dawei.feng@seu.edu.cn>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/intel/ice/ice_ethtool.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -1067,18 +1067,18 @@ static int ice_lbtest_prepare_rings(stru
status = ice_vsi_cfg_lan(vsi);
if (status)
- goto err_setup_rx_ring;
+ goto err_cfg_lan;
status = ice_vsi_start_all_rx_rings(vsi);
if (status)
- goto err_start_rx_ring;
+ goto err_cfg_lan;
return 0;
-err_start_rx_ring:
- ice_vsi_free_rx_rings(vsi);
-err_setup_rx_ring:
+err_cfg_lan:
ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, 0);
+err_setup_rx_ring:
+ ice_vsi_free_rx_rings(vsi);
err_setup_tx_ring:
ice_vsi_free_tx_rings(vsi);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 223/337] i2c: jz4780: Cache host clock rate at probe to prevent CCF prepare_lock deadlock
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (220 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 222/337] ice: fix memory leak in ice_lbtest_prepare_rings() Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 224/337] i2c: iproc: reset bus after timeout if START_BUSY is stuck Greg Kroah-Hartman
` (121 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, H. Nikolaus Schaller, Andi Shyti
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: H. Nikolaus Schaller <hns@goldelico.com>
commit d99607c888f26e8a4e9fe9772860cef4aff86bb4 upstream.
Fix a severe AB/BA deadlock between the Common Clock Framework (CCF)
and the I2C adapter lock, which triggers when an I2C-controlled clock
generator client (like the Si5351) is registered or modified under the CCF.
During an i2c client clock (generator) frequency change, the CCF acquires its global
'prepare_lock' mutex and the driver calls i2c_transfer() to update the client's
chip registers, stalling for the adapter's I2C bus lock.
Concurrently, an independent, parallel transfer on the same bus (e.g., a GPIO
expander handling LEDs) can hold the I2C adapter lock. Inside this parallel
transfer path, jz4780_i2c_set_speed() calls clk_get_rate() on the host
controller's input clock to calculate bus timings. This call attempts to acquire
the blocked CCF 'prepare_lock', creating a circular dependency that freezes
the system.
The jz4780 host controller clock itself is static and never changes at runtime.
However, calling clk_get_rate() inside the active transfer path introduces
an unnecessary dependency on the CCF internal locks.
Eliminate this synchronous clk_get_rate() call from the active transfer
path by caching the static host peripheral clock rate once - inside the private
jz4780_i2c structure during jz4780_i2c_probe(). Update jz4780_i2c_set_speed()
to use this cached value, safely decoupling active I2C transactions from the
CCF internal locks without any risk of stale timings.
Assisted-by web based Google AI (pinpointing the bug and writing the message).
Fixes: ba92222ed63a12 ("i2c: jz4780: Add i2c bus controller driver for Ingenic JZ4780")
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Cc: <stable@vger.kernel.org> # v4.1+
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/2db6fd233aceb7238474e4833f4d25ca681c3ffb.1784492382.git.hns@goldelico.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/i2c/busses/i2c-jz4780.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/i2c/busses/i2c-jz4780.c
+++ b/drivers/i2c/busses/i2c-jz4780.c
@@ -141,6 +141,7 @@ struct jz4780_i2c {
void __iomem *iomem;
int irq;
struct clk *clk;
+ unsigned long clk_rate_khz;
struct i2c_adapter adap;
const struct ingenic_i2c_config *cdata;
@@ -246,7 +247,7 @@ static int jz4780_i2c_set_target(struct
static int jz4780_i2c_set_speed(struct jz4780_i2c *i2c)
{
- int dev_clk_khz = clk_get_rate(i2c->clk) / 1000;
+ int dev_clk_khz = i2c->clk_rate_khz;
int cnt_high = 0; /* HIGH period count of the SCL clock */
int cnt_low = 0; /* LOW period count of the SCL clock */
int cnt_period = 0; /* period count of the SCL clock */
@@ -796,6 +797,8 @@ static int jz4780_i2c_probe(struct platf
if (IS_ERR(i2c->clk))
return PTR_ERR(i2c->clk);
+ i2c->clk_rate_khz = clk_get_rate(i2c->clk) / 1000;
+
ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency",
&clk_freq);
if (ret) {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 224/337] i2c: iproc: reset bus after timeout if START_BUSY is stuck
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (221 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 223/337] i2c: jz4780: Cache host clock rate at probe to prevent CCF prepare_lock deadlock Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 225/337] i2c: imx: Fix slave registration race and error handling Greg Kroah-Hartman
` (120 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Jonas Gorski, Ray Jui, Andi Shyti
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jonas Gorski <jonas.gorski@bisdn.de>
commit 98f2e9e6d6f91a6abb43f166b244b428ba85fa2b upstream.
If a transaction times out, the START_BUSY signal can stay up, and
subsequent transactaction attempts will fail as the bus is still
considered busy.
I can easily trigger this by attempting to read from an address with no
device, e.g. when running i2cdetect. After the first read times out, all
subsequent read attempts return busy.
To get to a working state again, the controller needs to be reset to
clear the START_BUSY signal. So check for START_BUSY still asserted on a
timeout, and do reset in case it is,
This is also done by the original non-upstream iproc-smbus driver
implementation [1].
Works around situations like:
bcm-iproc-2c 1803b000.i2c: transaction timed out
bcm-iproc-2c 1803b000.i2c: bus is busy
bcm-iproc-2c 1803b000.i2c: bus is busy
bcm-iproc-2c 1803b000.i2c: bus is busy
bcm-iproc-2c 1803b000.i2c: bus is busy
bcm-iproc-2c 1803b000.i2c: bus is busy
...
where the bus never recovers after a timeout.
[1] https://github.com/opencomputeproject/onie/blob/master/patches/kernel/3.2.69/driver-iproc-smbus.patch
Fixes: e6e5dd3566e0 ("i2c: iproc: Add Broadcom iProc I2C Driver")
Signed-off-by: Jonas Gorski <jonas.gorski@bisdn.de>
Cc: <stable@vger.kernel.org> # v4.0+
Acked-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260717085507.34209-1-jonas.gorski@bisdn.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/i2c/busses/i2c-bcm-iproc.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/drivers/i2c/busses/i2c-bcm-iproc.c
+++ b/drivers/i2c/busses/i2c-bcm-iproc.c
@@ -811,6 +811,17 @@ static int bcm_iproc_i2c_xfer_wait(struc
}
if (!time_left && !iproc_i2c->xfer_is_done) {
+ /*
+ * The controller may fail to clear START_BUSY after a timeout,
+ * reset the controller to recover in that case.
+ */
+ if (!!(iproc_i2c_rd_reg(iproc_i2c, M_CMD_OFFSET) &
+ BIT(M_CMD_START_BUSY_SHIFT))) {
+ bcm_iproc_i2c_enable_disable(iproc_i2c, false);
+ bcm_iproc_i2c_init(iproc_i2c);
+ bcm_iproc_i2c_enable_disable(iproc_i2c, true);
+ }
+
/* flush both TX/RX FIFOs */
val = BIT(M_FIFO_RX_FLUSH_SHIFT) | BIT(M_FIFO_TX_FLUSH_SHIFT);
iproc_i2c_wr_reg(iproc_i2c, M_FIFO_CTRL_OFFSET, val);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 225/337] i2c: imx: Fix slave registration race and error handling
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (222 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 224/337] i2c: iproc: reset bus after timeout if START_BUSY is stuck Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 226/337] i2c: imx: Cancel hrtimer before clearing slave pointer Greg Kroah-Hartman
` (119 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Liem, Frank Li, Carlos Song,
Andi Shyti
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Liem <liem16213@gmail.com>
commit d64ec362c369bbc33833f7936d5f3a706b0d5c45 upstream.
In i2c_imx_reg_slave(), the slave pointer was assigned before
pm_runtime_resume_and_get(). If pm_runtime_resume_and_get() failed,
the error path returned without clearing i2c_imx->slave, leaving it
non-NULL and causing all subsequent registration attempts to fail
with -EBUSY.
Additionally, because this driver uses a shared IRQ, the interrupt
handler i2c_imx_isr() can execute concurrently and, after acquiring
slave_lock, dereference i2c_imx->slave. The previous fix attempt
added a lockless i2c_imx->slave = NULL on the error path, but that
could race with the ISR under the lock and still cause a NULL pointer
dereference.
Fix both issues by deferring the assignment of i2c_imx->slave and
i2c_imx->last_slave_event to after a successful resume, and by
performing the assignment inside the slave_lock critical section.
This guarantees that the slave pointer is never left stale on the
error path and is always valid when observed by the interrupt handler.
Fixes: f7414cd6923f ("i2c: imx: support slave mode for imx I2C driver")
Signed-off-by: Liem <liem16213@gmail.com>
Cc: <stable@vger.kernel.org> # v5.11+
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Carlos Song <carlos.song@nxp.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260629023829.152651-2-liem16213@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/i2c/busses/i2c-imx.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -866,9 +866,6 @@ static int i2c_imx_reg_slave(struct i2c_
if (i2c_imx->slave)
return -EBUSY;
- i2c_imx->slave = client;
- i2c_imx->last_slave_event = I2C_SLAVE_STOP;
-
/* Resume */
ret = pm_runtime_resume_and_get(i2c_imx->adapter.dev.parent);
if (ret < 0) {
@@ -876,6 +873,11 @@ static int i2c_imx_reg_slave(struct i2c_
return ret;
}
+ scoped_guard(spinlock_irqsave, &i2c_imx->slave_lock) {
+ i2c_imx->slave = client;
+ i2c_imx->last_slave_event = I2C_SLAVE_STOP;
+ }
+
i2c_imx_slave_init(i2c_imx);
return 0;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 226/337] i2c: imx: Cancel hrtimer before clearing slave pointer
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (223 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 225/337] i2c: imx: Fix slave registration race and error handling Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 227/337] can: c_can: c_can_chip_config(): keep controller in init mode until bittiming is configured Greg Kroah-Hartman
` (118 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Liem, Carlos Song, Frank Li,
Andi Shyti
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Liem <liem16213@gmail.com>
commit 6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f upstream.
In i2c_imx_unreg_slave(), the slave pointer is set to NULL after
disabling interrupts. However, a pending interrupt might already
have started the hrtimer (i2c_imx_slave_timeout) before the pointer
was cleared. If the hrtimer fires after i2c_imx->slave is set to
NULL, the timer callback i2c_imx_slave_finish_op() will call
i2c_imx_slave_event() with a NULL slave pointer, which results in a
use-after-free / NULL pointer dereference.
Fix by canceling the hrtimer and waiting for it to complete after
disabling interrupts, before clearing the slave pointer.
Fixes: f7414cd6923f ("i2c: imx: support slave mode for imx I2C driver")
Signed-off-by: Liem <liem16213@gmail.com>
Cc: <stable@vger.kernel.org> # v5.11+
Acked-by: Carlos Song <carlos.song@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260629023829.152651-3-liem16213@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/i2c/busses/i2c-imx.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -896,6 +896,7 @@ static int i2c_imx_unreg_slave(struct i2
i2c_imx_reset_regs(i2c_imx);
+ hrtimer_cancel(&i2c_imx->slave_timer);
i2c_imx->slave = NULL;
/* Suspend */
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 227/337] can: c_can: c_can_chip_config(): keep controller in init mode until bittiming is configured
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (224 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 226/337] i2c: imx: Cancel hrtimer before clearing slave pointer Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 228/337] can: ems_usb: validate CPC message lengths Greg Kroah-Hartman
` (117 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lucas Martins Alves, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lucas Martins Alves <lucas.alves@lumal21.com.br>
commit 26504844613fb44c7cab1c5f6fcff77861709baa upstream.
c_can_chip_config() was programming C_CAN_CTRL_REG without CONTROL_INIT,
which may allow the controller to become active before
c_can_set_bittiming() finishes.
That creates a short timing window where the peripheral can interact with
the bus using a different/default bitrate, potentially generating bus
errors and corrupting traffic.
Set CONTROL_INIT together with the control-mode writes in
c_can_chip_config() (normal, loopback and listen-only paths), so the
controller stays halted until bit timing is fully programmed.
This prevents transient bus disturbance during startup when the configured
bitrate differs from the active bus bitrate.
Signed-off-by: Lucas Martins Alves <lucas.alves@lumal21.com.br>
Link: https://patch.msgid.link/20260714164839.771123-1-lucas.alves@lumal21.com.br
Fixes: 881ff67ad450 ("can: c_can: Added support for Bosch C_CAN controller")
Cc: stable@kernel.org
[mkl: remove space before close parenthesis]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/c_can/c_can_main.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/net/can/c_can/c_can_main.c
+++ b/drivers/net/can/c_can/c_can_main.c
@@ -597,20 +597,20 @@ static int c_can_chip_config(struct net_
return err;
/* enable automatic retransmission */
- priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_ENABLE_AR);
+ priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_ENABLE_AR | CONTROL_INIT);
if ((priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) &&
(priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)) {
/* loopback + silent mode : useful for hot self-test */
- priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_TEST);
+ priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_TEST | CONTROL_INIT);
priv->write_reg(priv, C_CAN_TEST_REG, TEST_LBACK | TEST_SILENT);
} else if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK) {
/* loopback mode : useful for self-test function */
- priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_TEST);
+ priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_TEST | CONTROL_INIT);
priv->write_reg(priv, C_CAN_TEST_REG, TEST_LBACK);
} else if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) {
/* silent mode : bus-monitoring mode */
- priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_TEST);
+ priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_TEST | CONTROL_INIT);
priv->write_reg(priv, C_CAN_TEST_REG, TEST_SILENT);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 228/337] can: ems_usb: validate CPC message lengths
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (225 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 227/337] can: c_can: c_can_chip_config(): keep controller in init mode until bittiming is configured Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 229/337] can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure Greg Kroah-Hartman
` (116 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
commit 02925f51377f2a42a6724f00549167499c9302e5 upstream.
ems_usb_read_bulk_callback() walks CPC messages packed in one USB
receive buffer.
Check that each declared message fits in the URB payload. Also require the
type-specific payload to cover the fields used by the CAN, state, error and
overrun handlers.
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260706092752.79600-1-pengpeng@iscas.ac.cn
Fixes: 702171adeed3 ("ems_usb: Added support for EMS CPC-USB/ARM7 CAN/USB interface")
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/usb/ems_usb.c | 43 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -409,6 +409,40 @@ static void ems_usb_rx_err(struct ems_us
netif_rx(skb);
}
+static bool ems_usb_rx_msg_len_valid(struct ems_cpc_msg *msg)
+{
+ size_t len = msg->length;
+ size_t can_len;
+
+ switch (msg->type) {
+ case CPC_MSG_TYPE_CAN_STATE:
+ return len >= sizeof(msg->msg.can_state);
+
+ case CPC_MSG_TYPE_CAN_FRAME:
+ case CPC_MSG_TYPE_EXT_CAN_FRAME:
+ case CPC_MSG_TYPE_RTR_FRAME:
+ case CPC_MSG_TYPE_EXT_RTR_FRAME:
+ if (len < CPC_CAN_MSG_MIN_SIZE)
+ return false;
+
+ if (msg->type == CPC_MSG_TYPE_RTR_FRAME ||
+ msg->type == CPC_MSG_TYPE_EXT_RTR_FRAME)
+ return true;
+
+ can_len = can_cc_dlc2len(msg->msg.can_msg.length & 0xf);
+ return len >= CPC_CAN_MSG_MIN_SIZE + can_len;
+
+ case CPC_MSG_TYPE_CAN_FRAME_ERROR:
+ return len >= sizeof(msg->msg.error);
+
+ case CPC_MSG_TYPE_OVERRUN:
+ return len >= sizeof(msg->msg.overrun);
+
+ default:
+ return true;
+ }
+}
+
/*
* callback for bulk IN urb
*/
@@ -451,6 +485,15 @@ static void ems_usb_read_bulk_callback(s
}
msg = (struct ems_cpc_msg *)&ibuf[start];
+ if (msg->length >
+ urb->actual_length - start - CPC_MSG_HEADER_LEN) {
+ netdev_err(netdev, "format error\n");
+ break;
+ }
+ if (!ems_usb_rx_msg_len_valid(msg)) {
+ netdev_err(netdev, "format error\n");
+ break;
+ }
switch (msg->type) {
case CPC_MSG_TYPE_CAN_STATE:
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 229/337] can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (226 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 228/337] can: ems_usb: validate CPC message lengths Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 230/337] can: gs_usb: gs_usb_receive_bulk_callback(): resubmit URB on skb allocation failure Greg Kroah-Hartman
` (115 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Guangshuo Li, Vincent Mailhol,
stable, Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Guangshuo Li <lgs201920130244@gmail.com>
commit 7a0cf2b2497c757c3cb1286eddf2986abb0d387b upstream.
es58x_read_bulk_callback() resubmits the RX URB after processing a received
packet. If the resubmit succeeds, the URB remains anchored and will be
handled by the normal RX path or by teardown.
However, if usb_submit_urb() fails, the callback unanchors the URB and then
returns directly. This skips the existing free_urb path, so the coherent
transfer buffer allocated with usb_alloc_coherent() is not released.
Reuse the existing free_urb path after a resubmit failure so that the RX
coherent buffer is freed before leaving the callback.
Fixes: 5eaad4f76826 ("can: usb: etas_es58x: correctly anchor the urb in the read bulk callback")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20260706014601.415445-1-lgs201920130244@gmail.com
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/usb/etas_es58x/es58x_core.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/net/can/usb/etas_es58x/es58x_core.c
+++ b/drivers/net/can/usb/etas_es58x/es58x_core.c
@@ -1476,7 +1476,6 @@ static void es58x_read_bulk_callback(str
dev_err_ratelimited(dev,
"Failed resubmitting read bulk urb: %pe\n",
ERR_PTR(ret));
- return;
free_urb:
usb_free_coherent(urb->dev, urb->transfer_buffer_length,
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 230/337] can: gs_usb: gs_usb_receive_bulk_callback(): resubmit URB on skb allocation failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (227 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 229/337] can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 231/337] can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer Greg Kroah-Hartman
` (114 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marc Kleine-Budde <mkl@pengutronix.de>
commit 68c5724ecd159992f76edb7b57dc508a44c8b7da upstream.
If the allocation of the SKB in gs_usb_receive_bulk_callback() fails, the
driver returns from the callback without resubmitting the URB in order to
receive further USB in URBs.
This results in a silent performance degradation which, if it occurs
repeatedly, results in starvation of USB in traffic.
Instead of returning immediately, try to resend the URB. If this also
fails, this is logged as an info message.
Fixes: d08e973a77d1 ("can: gs_usb: Added support for the GS_USB CAN devices")
Fixes: 26949ac935e3 ("can: gs_usb: add CAN-FD support")
Link: https://patch.msgid.link/20260709-gs_usb-resubmit-urb-v1-1-4dd40030cc84@pengutronix.de
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/usb/gs_usb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -671,7 +671,7 @@ static void gs_usb_receive_bulk_callback
if (hf->flags & GS_CAN_FLAG_FD) {
skb = alloc_canfd_skb(netdev, &cfd);
if (!skb)
- return;
+ goto resubmit_urb;
cfd->can_id = le32_to_cpu(hf->can_id);
cfd->len = data_length;
@@ -684,7 +684,7 @@ static void gs_usb_receive_bulk_callback
} else {
skb = alloc_can_skb(netdev, &cf);
if (!skb)
- return;
+ goto resubmit_urb;
cf->can_id = le32_to_cpu(hf->can_id);
can_frame_set_cc_len(cf, hf->can_dlc, dev->can.ctrlmode);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 231/337] can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (228 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 230/337] can: gs_usb: gs_usb_receive_bulk_callback(): resubmit URB on skb allocation failure Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 232/337] can: j1939: use netdevice_tracker for j1939_{priv,session,ecu} tracking Greg Kroah-Hartman
` (113 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jian Zhou, Oleksij Rempel, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oleksij Rempel <o.rempel@pengutronix.de>
commit eb96c58907922546e415e545fe9a14ea63b02719 upstream.
Zero the allocated buffer in j1939_session_fresh_new() to ensure it
contains no residual data.
While there is a potential performance impact if users allocate maximum
sized ETP buffers, most real-world use cases are not noticeably affected
since the maximum known buffer size is typically around 65K.
Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
Reported-by: Ji'an Zhou <eilaimemedsnaimel@gmail.com>
Message-ID: <CAPAUci5dykCLjoijqkUtFqJFesgncrD7+S6y_V=gjbFkY2Tifg@mail.gmail.com>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://patch.msgid.link/20260728055835.1151785-3-o.rempel@pengutronix.de
Cc: stable@kernel.org
[mkl: add Message-ID]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/can/j1939/transport.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -1562,7 +1562,7 @@ j1939_session *j1939_session_fresh_new(s
}
/* alloc data area */
- skb_put(skb, size);
+ skb_put_zero(skb, size);
/* skb is recounted in j1939_session_new() */
return session;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 232/337] can: j1939: use netdevice_tracker for j1939_{priv,session,ecu} tracking
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (229 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 231/337] can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 233/337] can: kvaser_usb: kvaser_usb_hydra_get_busparams(): fix memory leak in kvaser_usb_hydra_get_busparams() Greg Kroah-Hartman
` (112 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tetsuo Handa, Oleksij Rempel, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
commit d2fb981384b3a45f690616d550b29046e8ad16a4 upstream.
syzbot is still reporting
unregister_netdevice: waiting for vcan0 to become free. Usage count = 2
problem. A debug printk() patch in linux-next-20260508 identified that
there is dev_hold()/dev_put() imbalance in j1939_priv management.
Call trace for vcan0[26] +4 at
__dev_hold include/linux/netdevice.h:4470 [inline]
netdev_hold include/linux/netdevice.h:4513 [inline]
dev_hold include/linux/netdevice.h:4536 [inline]
j1939_priv_create net/can/j1939/main.c:140 [inline]
j1939_netdev_start+0x36b/0xc10 net/can/j1939/main.c:268
j1939_sk_bind+0x853/0xb30 net/can/j1939/socket.c:506
__sys_bind_socket net/socket.c:1948 [inline]
__sys_bind+0x2e9/0x410 net/socket.c:1979
Call trace for vcan0[28] -3 at
__dev_put include/linux/netdevice.h:4456 [inline]
netdev_put include/linux/netdevice.h:4523 [inline]
dev_put include/linux/netdevice.h:4548 [inline]
__j1939_priv_release net/can/j1939/main.c:166 [inline]
kref_put include/linux/kref.h:65 [inline]
j1939_priv_put+0x128/0x270 net/can/j1939/main.c:172
j1939_sk_sock_destruct+0x52/0x90 net/can/j1939/socket.c:388
__sk_destruct+0x8d/0x9d0 net/core/sock.c:2352
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core kernel/rcu/tree.c:2869 [inline]
rcu_cpu_kthread+0x99e/0x1470 kernel/rcu/tree.c:2957
smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
This refcount leak in j1939_priv might be caused by a refcount leak in
j1939_{session,ecu} because j1939_{session,ecu} holds a ref on j1939_priv.
For further investigation using upstream kernels, enable netdevice_tracker
in j1939_{priv,session,ecu} management.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://patch.msgid.link/20260728055835.1151785-2-o.rempel@pengutronix.de
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/can/j1939/bus.c | 2 ++
net/can/j1939/j1939-priv.h | 3 +++
net/can/j1939/main.c | 8 ++++----
net/can/j1939/transport.c | 2 ++
4 files changed, 11 insertions(+), 4 deletions(-)
--- a/net/can/j1939/bus.c
+++ b/net/can/j1939/bus.c
@@ -20,6 +20,7 @@ static void __j1939_ecu_release(struct k
struct j1939_priv *priv = ecu->priv;
list_del(&ecu->list);
+ netdev_put(priv->ndev, &ecu->priv_dev_tracker);
kfree(ecu);
j1939_priv_put(priv);
}
@@ -155,6 +156,7 @@ struct j1939_ecu *j1939_ecu_create_locke
if (!ecu)
return ERR_PTR(-ENOMEM);
kref_init(&ecu->kref);
+ netdev_hold(priv->ndev, &ecu->priv_dev_tracker, gfp_any());
ecu->addr = J1939_IDLE_ADDR;
ecu->name = name;
--- a/net/can/j1939/j1939-priv.h
+++ b/net/can/j1939/j1939-priv.h
@@ -38,6 +38,7 @@ struct j1939_ecu {
struct hrtimer ac_timer;
struct kref kref;
struct j1939_priv *priv;
+ netdevice_tracker priv_dev_tracker;
/* count users, to help transport protocol decide for interaction */
int nusers;
@@ -60,6 +61,7 @@ struct j1939_priv {
rwlock_t lock;
struct net_device *ndev;
+ netdevice_tracker dev_tracker;
/* list of 256 ecu ptrs, that cache the claimed addresses.
* also protected by the above lock
@@ -229,6 +231,7 @@ enum j1939_session_state {
struct j1939_session {
struct j1939_priv *priv;
+ netdevice_tracker priv_dev_tracker;
struct list_head active_session_list_entry;
struct list_head sk_session_queue_entry;
struct kref kref;
--- a/net/can/j1939/main.c
+++ b/net/can/j1939/main.c
@@ -137,7 +137,7 @@ static struct j1939_priv *j1939_priv_cre
priv->ndev = ndev;
kref_init(&priv->kref);
kref_init(&priv->rx_kref);
- dev_hold(ndev);
+ netdev_hold(ndev, &priv->dev_tracker, GFP_KERNEL);
netdev_dbg(priv->ndev, "%s : 0x%p\n", __func__, priv);
@@ -163,7 +163,7 @@ static void __j1939_priv_release(struct
WARN_ON_ONCE(!list_empty(&priv->ecus));
WARN_ON_ONCE(!list_empty(&priv->j1939_socks));
- dev_put(ndev);
+ netdev_put(ndev, &priv->dev_tracker);
kfree(priv);
}
@@ -281,7 +281,7 @@ struct j1939_priv *j1939_netdev_start(st
*/
kref_get(&priv_new->rx_kref);
mutex_unlock(&j1939_netdev_lock);
- dev_put(ndev);
+ netdev_put(ndev, &priv->dev_tracker);
kfree(priv);
return priv_new;
}
@@ -298,7 +298,7 @@ struct j1939_priv *j1939_netdev_start(st
j1939_priv_set(ndev, NULL);
mutex_unlock(&j1939_netdev_lock);
- dev_put(ndev);
+ netdev_put(ndev, &priv->dev_tracker);
kfree(priv);
return ERR_PTR(ret);
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -282,6 +282,7 @@ static void j1939_session_destroy(struct
kfree_skb(skb);
}
__j1939_session_drop(session);
+ netdev_put(session->priv->ndev, &session->priv_dev_tracker);
j1939_priv_put(session->priv);
kfree(session);
}
@@ -1510,6 +1511,7 @@ static struct j1939_session *j1939_sessi
INIT_LIST_HEAD(&session->active_session_list_entry);
INIT_LIST_HEAD(&session->sk_session_queue_entry);
kref_init(&session->kref);
+ netdev_hold(priv->ndev, &session->priv_dev_tracker, gfp_any());
j1939_priv_get(priv);
session->priv = priv;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 233/337] can: kvaser_usb: kvaser_usb_hydra_get_busparams(): fix memory leak in kvaser_usb_hydra_get_busparams()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (230 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 232/337] can: j1939: use netdevice_tracker for j1939_{priv,session,ecu} tracking Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 234/337] can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents Greg Kroah-Hartman
` (111 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Abdun Nihaal, Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Abdun Nihaal <nihaal@cse.iitm.ac.in>
commit 941eaf9a6d3b33dea49f2c0a1da7546a03b6ff71 upstream.
The memory allocated for cmd is not freed after the call to
kvaser_usb_send_cmd() in both the normal and error paths.
Fix that by adding a kfree() immediately after the call.
Fixes: 39d3df6b0ea8 ("can: kvaser_usb: Compare requested bittiming parameters with actual parameters in do_set_{,data}_bittiming")
Cc: stable@vger.kernel.org
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Link: https://patch.msgid.link/20260722103906.108571-1-nihaal@cse.iitm.ac.in
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
@@ -1625,6 +1625,7 @@ static int kvaser_usb_hydra_get_busparam
reinit_completion(&priv->get_busparams_comp);
err = kvaser_usb_send_cmd(dev, cmd, cmd_len);
+ kfree(cmd);
if (err)
return err;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 234/337] can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (231 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 233/337] can: kvaser_usb: kvaser_usb_hydra_get_busparams(): fix memory leak in kvaser_usb_hydra_get_busparams() Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 235/337] can: softing: fw_parse(): validate firmware record spans Greg Kroah-Hartman
` (110 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
commit 0293dd153f9dbc1ddf5dacdccc76b363bce4a8ee upstream.
The wait and bulk receive paths walk variable-length commands from a
USB buffer. A nonzero command shorter than CMD_HEADER_LEN can still be
dispatched, and the wait path copies a matching command into a fixed
caller-owned struct kvaser_cmd using the device-provided length.
Reject nonzero commands that do not contain the fixed header or that
extend beyond the current USB buffer item. In the wait path, also reject
a matching command that exceeds the destination before copying it.
Fixes: 080f40a6fa28 ("can: kvaser_usb: Add support for Kvaser CAN/USB devices")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260722042221.44066-1-pengpeng@iscas.ac.cn
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
@@ -668,13 +668,22 @@ static int kvaser_usb_leaf_wait_cmd(cons
continue;
}
- if (pos + tmp->len > actual_len) {
+ if (tmp->len < CMD_HEADER_LEN ||
+ tmp->len > actual_len - pos) {
dev_err_ratelimited(&dev->intf->dev,
"Format error\n");
break;
}
if (tmp->id == id) {
+ if (tmp->len > sizeof(*cmd)) {
+ dev_err_ratelimited(&dev->intf->dev,
+ "Received command %u too large (%u)\n",
+ tmp->id, tmp->len);
+ err = -EIO;
+ goto end;
+ }
+
memcpy(cmd, tmp, tmp->len);
goto end;
}
@@ -1677,7 +1686,7 @@ static void kvaser_usb_leaf_read_bulk_ca
continue;
}
- if (pos + cmd->len > len) {
+ if (cmd->len < CMD_HEADER_LEN || cmd->len > len - pos) {
dev_err_ratelimited(&dev->intf->dev, "Format error\n");
break;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 235/337] can: softing: fw_parse(): validate firmware record spans
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (232 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 234/337] can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 236/337] can: peak_usb: add bounds check for USB channel index Greg Kroah-Hartman
` (109 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
commit 856d6cb04e5407523566b075841dcd6423757d1c upstream.
fw_parse() reads a fixed record header, a firmware-provided payload,
and a trailing checksum without knowing the end of the firmware blob. A
truncated record can therefore make those reads exceed the blob.
The same record also supplies addresses and lengths for writes into
DPRAM. The generic loader uses wrap-prone mixed signed arithmetic for its
bounds check, while the application loader does not bound the staging
copy at all.
Pass the firmware end to the parser and validate the full source record.
Use a signed wide offset for generic DPRAM records and validate the
application staging span against the mapped DPRAM before copying.
Fixes: 03fd3cf5a179 ("can: add driver for Softing card")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260722044347.2708-1-pengpeng@iscas.ac.cn
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/softing/softing_fw.c | 46 ++++++++++++++++++++++++-----------
1 file changed, 32 insertions(+), 14 deletions(-)
--- a/drivers/net/can/softing/softing_fw.c
+++ b/drivers/net/can/softing/softing_fw.c
@@ -91,12 +91,12 @@ int softing_bootloader_command(struct so
return ret;
}
-static int fw_parse(const uint8_t **pmem, uint16_t *ptype, uint32_t *paddr,
- uint16_t *plen, const uint8_t **pdat)
+static int fw_parse(const u8 **pmem, const u8 *limit, u16 *ptype,
+ u32 *paddr, u16 *plen, const u8 **pdat)
{
uint16_t checksum[2];
- const uint8_t *mem;
- const uint8_t *end;
+ const u8 *mem;
+ const u8 *record_end;
/*
* firmware records are a binary, unaligned stream composed of:
@@ -114,14 +114,21 @@ static int fw_parse(const uint8_t **pmem
* endianness & alignment.
*/
mem = *pmem;
+ /* A record needs an 8-byte prefix and a 2-byte checksum. */
+ if (mem > limit || limit - mem < 10)
+ return -EINVAL;
+
*ptype = le16_to_cpup((void *)&mem[0]);
*paddr = le32_to_cpup((void *)&mem[2]);
*plen = le16_to_cpup((void *)&mem[6]);
+ if (*plen > limit - mem - 10)
+ return -EINVAL;
+
*pdat = &mem[8];
/* verify checksum */
- end = &mem[8 + *plen];
- checksum[0] = le16_to_cpup((void *)end);
- for (checksum[1] = 0; mem < end; ++mem)
+ record_end = &mem[8 + *plen];
+ checksum[0] = le16_to_cpup((void *)record_end);
+ for (checksum[1] = 0; mem < record_end; ++mem)
checksum[1] += *mem;
if (checksum[0] != checksum[1])
return -EINVAL;
@@ -139,6 +146,7 @@ int softing_load_fw(const char *file, st
uint16_t type, len;
uint32_t addr;
uint8_t *buf = NULL, *new_buf;
+ s64 dpram_offset;
int buflen = 0;
int8_t type_end = 0;
@@ -153,7 +161,7 @@ int softing_load_fw(const char *file, st
mem = fw->data;
end = &mem[fw->size];
/* look for header record */
- ret = fw_parse(&mem, &type, &addr, &len, &dat);
+ ret = fw_parse(&mem, end, &type, &addr, &len, &dat);
if (ret < 0)
goto failed;
if (type != 0xffff)
@@ -164,7 +172,7 @@ int softing_load_fw(const char *file, st
}
/* ok, we had a header */
while (mem < end) {
- ret = fw_parse(&mem, &type, &addr, &len, &dat);
+ ret = fw_parse(&mem, end, &type, &addr, &len, &dat);
if (ret < 0)
goto failed;
if (type == 3) {
@@ -179,9 +187,13 @@ int softing_load_fw(const char *file, st
goto failed;
}
- if ((addr + len + offset) > size)
+ dpram_offset = (s64)addr + offset;
+ if (dpram_offset < 0 || dpram_offset > size ||
+ len > size - dpram_offset) {
+ ret = -EINVAL;
goto failed;
- memcpy_toio(&dpram[addr + offset], dat, len);
+ }
+ memcpy_toio(&dpram[dpram_offset], dat, len);
/* be sure to flush caches from IO space */
mb();
if (len > buflen) {
@@ -195,7 +207,7 @@ int softing_load_fw(const char *file, st
buf = new_buf;
}
/* verify record data */
- memcpy_fromio(buf, &dpram[addr + offset], len);
+ memcpy_fromio(buf, &dpram[dpram_offset], len);
if (memcmp(buf, dat, len)) {
/* is not ok */
dev_alert(&card->pdev->dev, "DPRAM readback failed\n");
@@ -237,7 +249,7 @@ int softing_load_app_fw(const char *file
mem = fw->data;
end = &mem[fw->size];
/* look for header record */
- ret = fw_parse(&mem, &type, &addr, &len, &dat);
+ ret = fw_parse(&mem, end, &type, &addr, &len, &dat);
if (ret)
goto failed;
ret = -EINVAL;
@@ -253,7 +265,7 @@ int softing_load_app_fw(const char *file
}
/* ok, we had a header */
while (mem < end) {
- ret = fw_parse(&mem, &type, &addr, &len, &dat);
+ ret = fw_parse(&mem, end, &type, &addr, &len, &dat);
if (ret)
goto failed;
@@ -279,6 +291,12 @@ int softing_load_app_fw(const char *file
/* work in 16bit (target) */
sum &= 0xffff;
+ if (card->pdat->app.offs > card->dpram_size ||
+ len > card->dpram_size - card->pdat->app.offs) {
+ ret = -EINVAL;
+ goto failed;
+ }
+
memcpy_toio(&card->dpram[card->pdat->app.offs], dat, len);
iowrite32(card->pdat->app.offs + card->pdat->app.addr,
&card->dpram[DPRAM_COMMAND + 2]);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 236/337] can: peak_usb: add bounds check for USB channel index
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (233 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 235/337] can: softing: fw_parse(): validate firmware record spans Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 237/337] can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error Greg Kroah-Hartman
` (108 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, James Gao, Vincent Mailhol, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: James Gao <jamesgao5@outlook.com>
commit 39132f166ca8ce00ae60d8a9068e06a60943cc4b upstream.
The channel control index ctrl_idx is derived from rx->len which comes
directly from a device USB payload. The mask 0x0f allows values 0-15, but
the array size of usb_if->dev[] is only 2. Values 2-15 cause heap
out-of-bounds read, eventually causing kernel panic in the IRQ context.
Add bounds checking for ctrl_idx before the array access in both
pcan_usb_pro_handle_canmsg() and pcan_usb_pro_handle_error().
Fixes: d8a199355f8f ("can: usb: PEAK-System Technik PCAN-USB Pro specific part")
Signed-off-by: James Gao <jamesgao5@outlook.com>
Reviewed-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/TYWPR01MB8559DBAAAA6A7F410400329CF0012@TYWPR01MB8559.jpnprd01.prod.outlook.com
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/usb/peak_usb/pcan_usb_pro.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
--- a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
@@ -534,12 +534,18 @@ static int pcan_usb_pro_handle_canmsg(st
struct pcan_usb_pro_rxmsg *rx)
{
const unsigned int ctrl_idx = (rx->len >> 4) & 0x0f;
- struct peak_usb_device *dev = usb_if->dev[ctrl_idx];
- struct net_device *netdev = dev->netdev;
+ struct peak_usb_device *dev;
+ struct net_device *netdev;
struct can_frame *can_frame;
struct sk_buff *skb;
struct skb_shared_hwtstamps *hwts;
+ if (ctrl_idx >= ARRAY_SIZE(usb_if->dev))
+ return -EINVAL;
+
+ dev = usb_if->dev[ctrl_idx];
+ netdev = dev->netdev;
+
skb = alloc_can_skb(netdev, &can_frame);
if (!skb)
return -ENOMEM;
@@ -573,14 +579,20 @@ static int pcan_usb_pro_handle_error(str
{
const u16 raw_status = le16_to_cpu(er->status);
const unsigned int ctrl_idx = (er->channel >> 4) & 0x0f;
- struct peak_usb_device *dev = usb_if->dev[ctrl_idx];
- struct net_device *netdev = dev->netdev;
+ struct peak_usb_device *dev;
+ struct net_device *netdev;
struct can_frame *can_frame;
enum can_state new_state = CAN_STATE_ERROR_ACTIVE;
u8 err_mask = 0;
struct sk_buff *skb;
struct skb_shared_hwtstamps *hwts;
+ if (ctrl_idx >= ARRAY_SIZE(usb_if->dev))
+ return -EINVAL;
+
+ dev = usb_if->dev[ctrl_idx];
+ netdev = dev->netdev;
+
/* nothing should be sent while in BUS_OFF state */
if (dev->can.state == CAN_STATE_BUS_OFF)
return 0;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 237/337] can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (234 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 236/337] can: peak_usb: add bounds check for USB channel index Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 238/337] can: peak_usb: validate uCAN receive record lengths Greg Kroah-Hartman
` (107 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Maoyi Xie, Vincent Mailhol,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Maoyi Xie <maoyixie.tju@gmail.com>
commit 9b3d5a6d952c38bbcf07f903cbeadefdb56b9bc9 upstream.
In peak_usb_start(), each RX URB transfer buffer is allocated with kmalloc()
and the URB is flagged URB_FREE_BUFFER so that the final usb_free_urb() also
frees the transfer buffer.
If usb_submit_urb() fails, the error path frees the buffer explicitly with
kfree(buf) and then calls usb_free_urb(urb). Because URB_FREE_BUFFER is set,
usb_free_urb() -> urb_destroy() frees the same buffer a second time, a double
free of the transfer buffer.
BUG: KASAN: double-free in usb_free_urb.part.0+0x91/0xb0
Free of addr ffff8881069ccb80 by task trigger.sh/285
Call Trace:
kfree+0x113/0x3c0
usb_free_urb.part.0+0x91/0xb0
Drop the redundant kfree(buf); usb_free_urb() already releases the transfer
buffer. This mirrors commit 03819abbeb11 ("net: usb: lan78xx: Fix double free
issue with interrupt buffer allocation").
Fixes: bb4785551f64 ("can: usb: PEAK-System Technik USB adapters driver core")
Closes: https://lore.kernel.org/linux-can/178159320216.2154888.16953451793788581739@maoyixie.com/T/#u
Cc: stable@vger.kernel.org
Signed-off-by: Maoyi Xie <maoyixie.tju@gmail.com>
Reviewed-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/178163373110.2507866.216458825145756798@maoyixie.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/usb/peak_usb/pcan_usb_core.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -470,7 +470,6 @@ static int peak_usb_start(struct peak_us
netif_device_detach(dev->netdev);
usb_unanchor_urb(urb);
- kfree(buf);
usb_free_urb(urb);
break;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 238/337] can: peak_usb: validate uCAN receive record lengths
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (235 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 237/337] can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 239/337] can: ctucanfd: add missing MODULE_DEVICE_TABLE() Greg Kroah-Hartman
` (106 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
commit 93fcab2c6968446316bbb49548848df604d6346f upstream.
pcan_usb_fd_decode_buf() walks uCAN records packed in one USB
receive buffer.
Require each record to contain the fixed header for its type, and verify
CAN payload bytes before copying them into the skb.
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260706092836.79754-1-pengpeng@iscas.ac.cn
Fixes: 0a25e1f4f185 ("can: peak_usb: add support for PEAK new CANFD USB adapters")
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/usb/peak_usb/pcan_usb_fd.c | 40 ++++++++++++++++++++++++++++-
1 file changed, 39 insertions(+), 1 deletion(-)
--- a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
@@ -565,6 +565,13 @@ static int pcan_usb_fd_decode_canmsg(str
dev->can.ctrlmode);
}
+ if (!(rx_msg_flags & PUCAN_MSG_RTR) &&
+ le16_to_cpu(rx_msg->size) - offsetof(struct pucan_rx_msg, d) <
+ cfd->len) {
+ kfree_skb(skb);
+ return -EBADMSG;
+ }
+
cfd->can_id = le32_to_cpu(rm->can_id);
if (rx_msg_flags & PUCAN_MSG_EXT_ID)
@@ -713,6 +720,24 @@ static void pcan_usb_fd_decode_ts(struct
peak_usb_set_ts_now(&usb_if->time_ref, le32_to_cpu(ts->ts_low));
}
+static size_t pcan_usb_fd_rx_msg_min_size(u16 rx_msg_type)
+{
+ switch (rx_msg_type) {
+ case PUCAN_MSG_CAN_RX:
+ return offsetof(struct pucan_rx_msg, d);
+ case PCAN_UFD_MSG_CALIBRATION:
+ return sizeof(struct pcan_ufd_ts_msg);
+ case PUCAN_MSG_ERROR:
+ return sizeof(struct pucan_error_msg);
+ case PUCAN_MSG_STATUS:
+ return sizeof(struct pucan_status_msg);
+ case PCAN_UFD_MSG_OVERRUN:
+ return sizeof(struct pcan_ufd_ovr_msg);
+ default:
+ return sizeof(struct pucan_msg);
+ }
+}
+
/* callback for bulk IN urb */
static int pcan_usb_fd_decode_buf(struct peak_usb_device *dev, struct urb *urb)
{
@@ -727,6 +752,12 @@ static int pcan_usb_fd_decode_buf(struct
msg_end = urb->transfer_buffer + urb->actual_length;
for (; msg_ptr < msg_end;) {
u16 rx_msg_type, rx_msg_size;
+ size_t rx_msg_min_size;
+
+ if (msg_end - msg_ptr < sizeof(*rx_msg)) {
+ err = -EBADMSG;
+ break;
+ }
rx_msg = (struct pucan_msg *)msg_ptr;
if (!rx_msg->size) {
@@ -738,12 +769,19 @@ static int pcan_usb_fd_decode_buf(struct
rx_msg_type = le16_to_cpu(rx_msg->type);
/* check if the record goes out of current packet */
- if (msg_ptr + rx_msg_size > msg_end) {
+ if (rx_msg_size > msg_end - msg_ptr) {
netdev_err(netdev,
"got frag rec: should inc usb rx buf sze\n");
err = -EBADMSG;
break;
}
+
+ rx_msg_min_size = pcan_usb_fd_rx_msg_min_size(rx_msg_type);
+ if (rx_msg_size < rx_msg_min_size) {
+ netdev_err(netdev, "got short rec\n");
+ err = -EBADMSG;
+ break;
+ }
switch (rx_msg_type) {
case PUCAN_MSG_CAN_RX:
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 239/337] can: ctucanfd: add missing MODULE_DEVICE_TABLE()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (236 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 238/337] can: peak_usb: validate uCAN receive record lengths Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 240/337] can: ctucanfd: use self-test mode for PRESUME_ACK Greg Kroah-Hartman
` (105 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pengpeng Hou, Pavel Pisa, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pengpeng Hou <pengpeng@iscas.ac.cn>
commit d937bdb244a751fe5967052ea2d64a7b2c476cc0 upstream.
The driver has a match table for the pci bus wired into its driver
structure, but the table is not exported with MODULE_DEVICE_TABLE().
Add the missing MODULE_DEVICE_TABLE() entry so module alias information
is generated for automatic module loading.
This is a source-level fix. It does not claim dynamic hardware
reproduction; the evidence is the driver-owned match table, its use by
the driver registration structure, and the missing module alias
publication.
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Acked-by: Pavel Pisa <pisa@fel.cvut.cz>
Link: https://patch.msgid.link/20260704151957.48194-1-pengpeng@iscas.ac.cn
Fixes: 792a5b678e81 ("can: ctucanfd: CTU CAN FD open-source IP core - PCI bus support.")
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/ctucanfd/ctucanfd_pci.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/can/ctucanfd/ctucanfd_pci.c
+++ b/drivers/net/can/ctucanfd/ctucanfd_pci.c
@@ -274,6 +274,7 @@ static const struct pci_device_id ctucan
CTUCAN_WITH_CTUCAN_ID)},
{},
};
+MODULE_DEVICE_TABLE(pci, ctucan_pci_tbl);
static struct pci_driver ctucan_pci_driver = {
.name = KBUILD_MODNAME,
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 240/337] can: ctucanfd: use self-test mode for PRESUME_ACK
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (237 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 239/337] can: ctucanfd: add missing MODULE_DEVICE_TABLE() Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 241/337] can: ctucanfd: unmap BAR0 using base address Greg Kroah-Hartman
` (104 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Avi Weiss, Pavel Pisa, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Avi Weiss <thnkslprpt@gmail.com>
commit c31a435933f18be0f874302161333e9f16e200a0 upstream.
Use self-test mode for CAN_CTRLMODE_PRESUME_ACK so transmitted
frames can complete without receiving an ACK.
ACK forbidden mode prevents the controller from acknowledging
received frames and does not implement the presume-ack behavior.
Fixes: 2dcb8e8782d8 ("can: ctucanfd: add support for CTU CAN FD open-source IP core - bus independent part.")
Signed-off-by: Avi Weiss <thnkslprpt@gmail.com>
Acked-by: Pavel Pisa <pisa@fel.cvut.cz>
Link: https://patch.msgid.link/20260722192726.230729-1-thnkslprpt@gmail.com
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/ctucanfd/ctucanfd_base.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/can/ctucanfd/ctucanfd_base.c
+++ b/drivers/net/can/ctucanfd/ctucanfd_base.c
@@ -340,8 +340,8 @@ static void ctucan_set_mode(struct ctuca
(mode_reg & ~REG_MODE_FDE);
mode_reg = (mode->flags & CAN_CTRLMODE_PRESUME_ACK) ?
- (mode_reg | REG_MODE_ACF) :
- (mode_reg & ~REG_MODE_ACF);
+ (mode_reg | REG_MODE_STM) :
+ (mode_reg & ~REG_MODE_STM);
mode_reg = (mode->flags & CAN_CTRLMODE_FD_NON_ISO) ?
(mode_reg | REG_MODE_NISOFD) :
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 241/337] can: ctucanfd: unmap BAR0 using base address
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (238 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 240/337] can: ctucanfd: use self-test mode for PRESUME_ACK Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 242/337] can: ctucanfd: handle bus error interrupts Greg Kroah-Hartman
` (103 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Avi Weiss, Pavel Pisa, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Avi Weiss <thnkslprpt@gmail.com>
commit a6873910f983096746d1a2e0af94f36b8003e839 upstream.
BAR0 is mapped into bar0_base, while cra_addr points to an offset
within that mapping and is used for other purposes.
Pass bar0_base to pci_iounmap(), instead of cra_addr, on the probe error
path so the address returned by pci_iomap() is used for unmapping.
Fixes: 792a5b678e81 ("can: ctucanfd: CTU CAN FD open-source IP core - PCI bus support.")
Signed-off-by: Avi Weiss <thnkslprpt@gmail.com>
Acked-by: Pavel Pisa <pisa@fel.cvut.cz>
Link: https://patch.msgid.link/20260723095934.181042-1-thnkslprpt@gmail.com
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/ctucanfd/ctucanfd_pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/can/ctucanfd/ctucanfd_pci.c
+++ b/drivers/net/can/ctucanfd/ctucanfd_pci.c
@@ -202,7 +202,7 @@ err_free_board:
pci_set_drvdata(pdev, NULL);
kfree(bdata);
err_pci_iounmap_bar0:
- pci_iounmap(pdev, cra_addr);
+ pci_iounmap(pdev, bar0_base);
err_pci_iounmap_bar1:
pci_iounmap(pdev, addr);
err_release_regions:
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 242/337] can: ctucanfd: handle bus error interrupts
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (239 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 241/337] can: ctucanfd: unmap BAR0 using base address Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 243/337] can: ctucanfd: mark error-active controller status valid Greg Kroah-Hartman
` (102 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Avi Weiss, Pavel Pisa, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Avi Weiss <thnkslprpt@gmail.com>
commit e74bae899529f49c0f375307983d12e8ecad7d4b upstream.
Include REG_INT_STAT_BEI in the top-level error interrupt condition.
BEI is enabled when CAN_CTRLMODE_BERR_REPORTING is requested and
ctucan_err_interrupt() already handles it. Without checking and
clearing BEI in the top-level handler, bus error interrupts are not
handled or acknowledged.
Fixes: 2dcb8e8782d8 ("can: ctucanfd: add support for CTU CAN FD open-source IP core - bus independent part.")
Signed-off-by: Avi Weiss <thnkslprpt@gmail.com>
Acked-by: Pavel Pisa <pisa@fel.cvut.cz>
Link: https://patch.msgid.link/20260723074403.131575-1-thnkslprpt@gmail.com
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/ctucanfd/ctucanfd_base.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/net/can/ctucanfd/ctucanfd_base.c
+++ b/drivers/net/can/ctucanfd/ctucanfd_base.c
@@ -1135,8 +1135,12 @@ static irqreturn_t ctucan_interrupt(int
/* Error interrupts */
if (FIELD_GET(REG_INT_STAT_EWLI, isr) ||
FIELD_GET(REG_INT_STAT_FCSI, isr) ||
- FIELD_GET(REG_INT_STAT_ALI, isr)) {
- icr = isr & (REG_INT_STAT_EWLI | REG_INT_STAT_FCSI | REG_INT_STAT_ALI);
+ FIELD_GET(REG_INT_STAT_ALI, isr) ||
+ FIELD_GET(REG_INT_STAT_BEI, isr)) {
+ icr = isr & (REG_INT_STAT_EWLI |
+ REG_INT_STAT_FCSI |
+ REG_INT_STAT_ALI |
+ REG_INT_STAT_BEI);
ctucan_netdev_dbg(ndev, "some ERR interrupt: clearing 0x%08x\n", icr);
ctucan_write32(priv, CTUCANFD_INT_STAT, icr);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 243/337] can: ctucanfd: mark error-active controller status valid
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (240 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 242/337] can: ctucanfd: handle bus error interrupts Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 244/337] drm/dp: Read the PCON max FRL bandwidth only for HDMI DFPs Greg Kroah-Hartman
` (101 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Avi Weiss, stable, Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Avi Weiss <thnkslprpt@gmail.com>
commit 4e735cbe3affe88001428fdd9cae8e685ce92f21 upstream.
In the CAN_STATE_ERROR_ACTIVE case, cf->data[1] is set to
CAN_ERR_CRTL_ACTIVE, but cf->can_id is not set with CAN_ERR_CRTL in
that path.
Set CAN_ERR_CRTL so consumers know the controller-status information
in cf->data[1] is valid.
Fixes: 9bd24927e3ee ("can: ctucanfd: handle skb allocation failure")
Signed-off-by: Avi Weiss <thnkslprpt@gmail.com>
Link: https://patch.msgid.link/20260723155543.318414-1-thnkslprpt@gmail.com
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/ctucanfd/ctucanfd_base.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/can/ctucanfd/ctucanfd_base.c
+++ b/drivers/net/can/ctucanfd/ctucanfd_base.c
@@ -868,7 +868,7 @@ static void ctucan_err_interrupt(struct
break;
case CAN_STATE_ERROR_ACTIVE:
if (skb) {
- cf->can_id |= CAN_ERR_CNT;
+ cf->can_id |= CAN_ERR_CRTL | CAN_ERR_CNT;
cf->data[1] = CAN_ERR_CRTL_ACTIVE;
cf->data[6] = bec.txerr;
cf->data[7] = bec.rxerr;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 244/337] drm/dp: Read the PCON max FRL bandwidth only for HDMI DFPs
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (241 preceding siblings ...)
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@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 245/337] drm/vc4: Supply the overflow slot size in BPOS, not the whole bin BO size Greg Kroah-Hartman
` (100 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ankit Nautiyal, Jani Nikula,
Maarten Lankhorst, dri-devel, Alexander Kaplan, Uma Shankar
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexander Kaplan <alexander.kaplan@sms-medipool.de>
commit e40e20ac089e32f1d910636155dc82e61e61dcf3 upstream.
The PCON max FRL bandwidth field lives in byte 2 of the DFP Detailed
Capability Info (DPCD 0x82 for the first DFP).
The DP standard defines the meaning of descriptor bytes 1-3 strictly
per DFP type, and for a DisplayPort type DFP all of them are
reserved, with "read all 0s" semantics (DP v2.0, section 2.12.3,
Table 2-183).
The FRL bandwidth field is an HDMI DFP extension added by the VESA
DP-to-HDMI PCON specification.
drm_dp_get_pcon_max_frl_bw() however parses the byte without checking
the DFP type, the branch presence or DETAILED_CAP_INFO_AVAILABLE.
Without the latter the port descriptors are one byte wide and
port_cap[2] is not even the right register.
All neighbouring helpers parsing the same descriptor are scoped by
the DFP type already, see for instance drm_dp_downstream_max_bpc()
reading the same byte and returning 0 for a DP type DFP.
amdgpu's DC parses the field only for HDMI(/DP++) detailed types as
well.
This is not theoretical.
A Synaptics VMM7100 based USB-C to HDMI adapter with a macOS targeted
firmware advertises a DisplayPort type DFP with the type byte
replicated across the whole descriptor (08 08 08 08).
i915 decodes that as "PCON limited to 18 Gbps FRL" and prunes every
mode above ~750 MHz dotclock, including all the 4k@100/120 modes the
sink EDID offers, while macOS drives 4k@120 through the same adapter
just fine via DP DSC (and amdgpu's type-scoped parser would ignore
the bogus field as well).
Only parse the field for an HDMI DFP behind a DPCD 1.1+ branch
device that reports detailed cap info, matching the type-scoped
field layout of the spec and the rest of the helpers.
Fixes: ce32a6239de6 ("drm/dp_helper: Add Helpers for FRL Link Training support for DP-HDMI2.1 PCON")
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com> (v2)
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v5.12+
Signed-off-by: Alexander Kaplan <alexander.kaplan@sms-medipool.de>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patch.msgid.link/20260610193825.2933-1-alexander.kaplan@sms-medipool.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/display/drm_dp_helper.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/drivers/gpu/drm/display/drm_dp_helper.c
+++ b/drivers/gpu/drm/display/drm_dp_helper.c
@@ -3145,6 +3145,18 @@ int drm_dp_get_pcon_max_frl_bw(const u8
int bw;
u8 buf;
+ if (!drm_dp_is_branch(dpcd))
+ return 0;
+
+ if (dpcd[DP_DPCD_REV] < 0x11)
+ return 0;
+
+ if ((dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DETAILED_CAP_INFO_AVAILABLE) == 0)
+ return 0;
+
+ if ((port_cap[0] & DP_DS_PORT_TYPE_MASK) != DP_DS_PORT_TYPE_HDMI)
+ return 0;
+
buf = port_cap[2];
bw = buf & DP_PCON_MAX_FRL_BW;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 245/337] drm/vc4: Supply the overflow slot size in BPOS, not the whole bin BO size
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (242 preceding siblings ...)
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@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 246/337] drm/vc4: Zero the tile state data array before each BIN job Greg Kroah-Hartman
` (99 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jose Maria Casanova Crespo,
Maíra Canal, Iago Toral Quiroga
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
commit 6395789e4739aa5177bbec0fa0f07ccc38d249b0 upstream.
vc4_overflow_mem_work() points BPOA at a 512KB slot inside the 16MB
binner BO, but writes the size of the whole BO to BPOS. On every binner
out-of-memory event the PTB is therefore authorized to write tile lists
across all the other slots (which may hold the tile state, tile alloc and
overflow memory of in-flight jobs) and, for any slot but the first, past
the end of the binner BO into unrelated CMA memory.
Since CMA pages are recycled into page cache and user allocations, this
is arbitrary memory corruption by GPU DMA. In practice it shows up as GPU
hangs with corrupted control list pointers, userspace heap corruption, a
GPU that stays permanently wedged after the first hang, and occasional
full system crashes, whenever a job overflows the initial binner slot.
The bug dates back to the conversion from a dedicated overflow BO (where
writing the full BO size was correct) to the slotted binner BO.
Fixes: 553c942f8b2c ("drm/vc4: Allow using more than 256MB of CMA memory.")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.8
Signed-off-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Link: https://patch.msgid.link/20260727-vc4-bin-oom-fixes-v2-1-0d8a5eddc7c9@igalia.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vc4/vc4_irq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/vc4/vc4_irq.c
+++ b/drivers/gpu/drm/vc4/vc4_irq.c
@@ -104,7 +104,7 @@ vc4_overflow_mem_work(struct work_struct
vc4->bin_alloc_overflow = BIT(bin_bo_slot);
V3D_WRITE(V3D_BPOA, bo->base.dma_addr + bin_bo_slot * vc4->bin_alloc_size);
- V3D_WRITE(V3D_BPOS, bo->base.base.size);
+ V3D_WRITE(V3D_BPOS, vc4->bin_alloc_size);
V3D_WRITE(V3D_INTCTL, V3D_INT_OUTOMEM);
V3D_WRITE(V3D_INTENA, V3D_INT_OUTOMEM);
spin_unlock_irqrestore(&vc4->job_lock, irqflags);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 246/337] drm/vc4: Zero the tile state data array before each BIN job
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (243 preceding siblings ...)
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@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 247/337] drm/panthor: reject firmware sections with oversized data Greg Kroah-Hartman
` (98 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Iago Toral Quiroga, Maíra Canal
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Maíra Canal <mcanal@igalia.com>
commit 48a570c964d8e37d353381e4195106277e17f5cb upstream.
The binner BO is a single 16MB buffer split into 512KB slots that are
handed out to jobs at submission time and recycled as jobs complete,
without ever being cleared. Each slot holds the job's Tile State Data
Array (TSDA) at its start, followed by the tile allocation pool.
While the tile allocation pool is only walked by the render thread
through branches the binner generated during the current job, the
TSDA is the PTB's own per-tile bookkeeping and is consumed by the
hardware itself. Although the kernel sets the "Auto-initialise Tile
State Data Array" flag in the tile binning mode configuration, the
PTB demonstrably still acts on stale tile state left by the slot's
previous user: the binner ends up creating invalid command streams
with invalid primitive streams and branches, which can cause GPU hangs
as observed in [1][2].
Zero the TSDA when the job's binning slot is configured. This clears
48 bytes per tile (~24KB for a 1080p frame) in the submission path, and
guarantees the PTB never sees another job's tile state.
The tile count is only checked for being non-zero today, so the 8-bit
fields it comes from can describe a tile state array almost six times
larger than the slot it has to live in. Bound it before the slot is
handed out, since such size decides how much of the slot is left for
the tile alloc pool.
Link: https://github.com/raspberrypi/linux/issues/3221 [1]
Link: https://github.com/raspberrypi/linux/issues/5780 [2]
Fixes: 553c942f8b2c ("drm/vc4: Allow using more than 256MB of CMA memory.")
Cc: stable@vger.kernel.org
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Link: https://patch.msgid.link/20260727-vc4-bin-oom-fixes-v2-2-0d8a5eddc7c9@igalia.com
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vc4/vc4_validate.c | 29 +++++++++++++++++++++++------
1 file changed, 23 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_validate.c
+++ b/drivers/gpu/drm/vc4/vc4_validate.c
@@ -387,6 +387,23 @@ validate_tile_binning_config(VALIDATE_AR
return -EINVAL;
}
+ /* The tile state data array is 48 bytes per tile, and we put it at
+ * the start of a BO containing both it and the tile alloc.
+ */
+ tile_state_size = 48 * tile_count;
+
+ /* Since the tile alloc array will follow us, align. */
+ tile_state_size = roundup(tile_state_size, 4096);
+
+ /* Reject configurations whose tile state would leave no room for
+ * the tile alloc pool that follows it in the slot.
+ */
+ if (tile_state_size >= vc4->bin_alloc_size) {
+ DRM_DEBUG("Tile binning config of %dx%d too large\n",
+ exec->bin_tiles_x, exec->bin_tiles_y);
+ return -EINVAL;
+ }
+
bin_slot = vc4_v3d_get_bin_slot(vc4);
if (bin_slot < 0) {
if (bin_slot != -EINTR && bin_slot != -ERESTARTSYS) {
@@ -402,13 +419,13 @@ validate_tile_binning_config(VALIDATE_AR
exec->bin_slots |= BIT(bin_slot);
bin_addr = vc4->bin_bo->base.dma_addr + bin_slot * vc4->bin_alloc_size;
- /* The tile state data array is 48 bytes per tile, and we put it at
- * the start of a BO containing both it and the tile alloc.
- */
- tile_state_size = 48 * tile_count;
+ exec->tile_alloc_offset = bin_addr + tile_state_size;
- /* Since the tile alloc array will follow us, align. */
- exec->tile_alloc_offset = bin_addr + roundup(tile_state_size, 4096);
+ /* The TSDA area must be zeroed out before use, otherwise the PTB might
+ * consume a stale tile state.
+ */
+ memset(vc4->bin_bo->base.vaddr + bin_slot * vc4->bin_alloc_size, 0,
+ tile_state_size);
*(uint8_t *)(validated + 14) =
((flags & ~(VC4_BIN_CONFIG_ALLOC_INIT_BLOCK_SIZE_MASK |
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 247/337] drm/panthor: reject firmware sections with oversized data
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (244 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 246/337] drm/vc4: Zero the tile state data array before each BIN job Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 248/337] drm/panthor: validate firmware interface structure sizes Greg Kroah-Hartman
` (97 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Osama Abdelkader, Steven Price,
Boris Brezillon
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Osama Abdelkader <osama.abdelkader@gmail.com>
commit a3caaa06809248b996254be5b47e10804a3494e2 upstream.
In panthor_fw_load_section_entry(), the data size to copy is calculated
without validating it against the allocated section_size:
section->data.size = hdr.data.end - hdr.data.start;
If a crafted firmware sets data.size larger than the allocated memory,
this could cause a heap buffer overflow in panthor_fw_init_section_mem()
memcpy(section->mem->kmap, section->data.buf, section->data.size);
Additionally, if the section->data.size exceeds the BO size, could this
memset underflow the size calculation, leading to a massive out-of-bounds
zeroing of kernel memory?
memset(section->mem->kmap + section->data.size, 0,
panthor_kernel_bo_size(section->mem) - section->data.size);
Reject section entries whose initial data is larger than the section size.
Fixes: 2718d91816ee ("drm/panthor: Add the FW logical block")
Cc: stable@vger.kernel.org
Signed-off-by: Osama Abdelkader <osama.abdelkader@gmail.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patch.msgid.link/20260716143939.21903-1-osama.abdelkader@gmail.com
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/panthor/panthor_fw.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/panthor/panthor_fw.c
+++ b/drivers/gpu/drm/panthor/panthor_fw.c
@@ -491,6 +491,7 @@ static int panthor_fw_load_section_entry
struct panthor_fw_binary_section_entry_hdr hdr;
struct panthor_fw_section *section;
u32 section_size;
+ u32 data_size;
u32 name_len;
int ret;
@@ -541,6 +542,13 @@ static int panthor_fw_load_section_entry
return -EINVAL;
}
+ section_size = hdr.va.end - hdr.va.start;
+ data_size = hdr.data.end - hdr.data.start;
+ if (data_size > section_size) {
+ drm_err(&ptdev->base, "Firmware corrupted, section data exceeds section size\n");
+ return -EINVAL;
+ }
+
name_len = iter->size - iter->offset;
section = drmm_kzalloc(&ptdev->base, sizeof(*section), GFP_KERNEL);
@@ -549,7 +557,7 @@ static int panthor_fw_load_section_entry
list_add_tail(§ion->node, &ptdev->fw->sections);
section->flags = hdr.flags;
- section->data.size = hdr.data.end - hdr.data.start;
+ section->data.size = data_size;
if (section->data.size > 0) {
void *data = drmm_kmalloc(&ptdev->base, section->data.size, GFP_KERNEL);
@@ -572,7 +580,6 @@ static int panthor_fw_load_section_entry
section->name = name;
}
- section_size = hdr.va.end - hdr.va.start;
if (section_size) {
u32 cache_mode = hdr.flags & CSF_FW_BINARY_IFACE_ENTRY_RD_CACHE_MODE_MASK;
struct panthor_gem_object *bo;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 248/337] drm/panthor: validate firmware interface structure sizes
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (245 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 247/337] drm/panthor: reject firmware sections with oversized data Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 249/337] drm/mediatek: ovl_adaptor: balance component registrations Greg Kroah-Hartman
` (96 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Osama Abdelkader, Steven Price
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Osama Abdelkader <osama.abdelkader@gmail.com>
commit b921b8613790a3f9e78ab64017fa7149ef0b750c upstream.
iface_fw_to_cpu_addr() only checks that the firmware-provided MCU virtual
address points inside the shared section. The returned pointer is later
used as a full firmware interface structure, so accepting an address near
the end of the shared section can still lead to out-of-bounds accesses.
Pass the expected object size to iface_fw_to_cpu_addr() and reject ranges
that do not fit entirely in the shared section.
Fixes: 2718d91816ee ("drm/panthor: Add the FW logical block")
Cc: stable@vger.kernel.org
Signed-off-by: Osama Abdelkader <osama.abdelkader@gmail.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patch.msgid.link/20260720114918.15973-1-osama.abdelkader@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/panthor/panthor_fw.c | 36 +++++++++++++++++++++++------------
1 file changed, 24 insertions(+), 12 deletions(-)
--- a/drivers/gpu/drm/panthor/panthor_fw.c
+++ b/drivers/gpu/drm/panthor/panthor_fw.c
@@ -767,18 +767,24 @@ out:
* iface_fw_to_cpu_addr() - Turn an MCU address into a CPU address
* @ptdev: Device.
* @mcu_va: MCU address.
+ * @size: Size of the object pointed to by @mcu_va.
*
- * Return: NULL if the address is not part of the shared section, non-NULL otherwise.
+ * Return: NULL if the object is not part of the shared section, non-NULL otherwise.
*/
-static void *iface_fw_to_cpu_addr(struct panthor_device *ptdev, u32 mcu_va)
+static void *iface_fw_to_cpu_addr(struct panthor_device *ptdev, u32 mcu_va, size_t size)
{
u64 shared_mem_start = panthor_kernel_bo_gpuva(ptdev->fw->shared_section->mem);
- u64 shared_mem_end = shared_mem_start +
- panthor_kernel_bo_size(ptdev->fw->shared_section->mem);
- if (mcu_va < shared_mem_start || mcu_va >= shared_mem_end)
+ size_t shared_mem_size = panthor_kernel_bo_size(ptdev->fw->shared_section->mem);
+ u64 offset;
+
+ if (mcu_va < shared_mem_start)
+ return NULL;
+
+ offset = mcu_va - shared_mem_start;
+ if (offset > shared_mem_size || size > shared_mem_size - offset)
return NULL;
- return ptdev->fw->shared_section->mem->kmap + (mcu_va - shared_mem_start);
+ return ptdev->fw->shared_section->mem->kmap + offset;
}
static int panthor_init_cs_iface(struct panthor_device *ptdev,
@@ -800,8 +806,10 @@ static int panthor_init_cs_iface(struct
spin_lock_init(&cs_iface->lock);
cs_iface->control = ptdev->fw->shared_section->mem->kmap + iface_offset;
- cs_iface->input = iface_fw_to_cpu_addr(ptdev, cs_iface->control->input_va);
- cs_iface->output = iface_fw_to_cpu_addr(ptdev, cs_iface->control->output_va);
+ cs_iface->input = iface_fw_to_cpu_addr(ptdev, cs_iface->control->input_va,
+ sizeof(*cs_iface->input));
+ cs_iface->output = iface_fw_to_cpu_addr(ptdev, cs_iface->control->output_va,
+ sizeof(*cs_iface->output));
if (!cs_iface->input || !cs_iface->output) {
drm_err(&ptdev->base, "Invalid stream control interface input/output VA");
@@ -851,8 +859,10 @@ static int panthor_init_csg_iface(struct
spin_lock_init(&csg_iface->lock);
csg_iface->control = ptdev->fw->shared_section->mem->kmap + iface_offset;
- csg_iface->input = iface_fw_to_cpu_addr(ptdev, csg_iface->control->input_va);
- csg_iface->output = iface_fw_to_cpu_addr(ptdev, csg_iface->control->output_va);
+ csg_iface->input = iface_fw_to_cpu_addr(ptdev, csg_iface->control->input_va,
+ sizeof(*csg_iface->input));
+ csg_iface->output = iface_fw_to_cpu_addr(ptdev, csg_iface->control->output_va,
+ sizeof(*csg_iface->output));
if (csg_iface->control->stream_num < MIN_CS_PER_CSG ||
csg_iface->control->stream_num > MAX_CS_PER_CSG)
@@ -909,8 +919,10 @@ static int panthor_fw_init_ifaces(struct
return -EINVAL;
}
- glb_iface->input = iface_fw_to_cpu_addr(ptdev, glb_iface->control->input_va);
- glb_iface->output = iface_fw_to_cpu_addr(ptdev, glb_iface->control->output_va);
+ glb_iface->input = iface_fw_to_cpu_addr(ptdev, glb_iface->control->input_va,
+ sizeof(*glb_iface->input));
+ glb_iface->output = iface_fw_to_cpu_addr(ptdev, glb_iface->control->output_va,
+ sizeof(*glb_iface->output));
if (!glb_iface->input || !glb_iface->output) {
drm_err(&ptdev->base, "Invalid global control interface input/output VA");
return -EINVAL;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 249/337] drm/mediatek: ovl_adaptor: balance component registrations
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (246 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 248/337] drm/panthor: validate firmware interface structure sizes Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 250/337] drm/amdgpu: restore UMD profile pstate after runtime resume Greg Kroah-Hartman
` (95 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ijae Kim, Myeonghun Pak, CK Hu,
Chun-Kuang Hu
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Myeonghun Pak <mhun512@gmail.com>
commit 533e3469a57996905cdb95f178e7efe38c21aeb2 upstream.
The OVL adaptor registers both an aggregate driver for its child devices
and a component for the main DRM aggregate. Probe currently ignores an
error from registering the child aggregate and leaves that aggregate
registered if registering the DRM component fails. The remove callback
also leaves the DRM component registered.
These imbalances can leave component framework entries referring to a
device whose probe failed or whose driver has been detached. The aggregate
unbind callback also fails to undo component_bind_all(), leaving its child
components marked as bound when the aggregate is removed.
Check the aggregate registration result, unwind it when the component
registration fails, and unregister the component before the aggregate on
remove. Keep runtime PM enabled until both framework registrations have
been removed, and unbind all child components from the aggregate unbind
callback.
Fixes: 453c3364632a ("drm/mediatek: Add ovl_adaptor support for MT8195")
Cc: stable@vger.kernel.org # 6.4+
Co-developed-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Ijae Kim <ae878000@gmail.com>
Signed-off-by: Myeonghun Pak <mhun512@gmail.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260721152242.47138-1-mhun512@gmail.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
@@ -585,6 +585,7 @@ static void mtk_disp_ovl_adaptor_master_
struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev);
priv->children_bound = false;
+ component_unbind_all(dev, priv->mmsys_dev);
}
static const struct component_master_ops mtk_disp_ovl_adaptor_master_ops = {
@@ -611,12 +612,15 @@ static int mtk_disp_ovl_adaptor_probe(st
priv->mmsys_dev = pdev->dev.platform_data;
- component_master_add_with_match(dev, &mtk_disp_ovl_adaptor_master_ops, match);
+ ret = component_master_add_with_match(dev, &mtk_disp_ovl_adaptor_master_ops, match);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to add component master\n");
pm_runtime_enable(dev);
ret = component_add(dev, &mtk_disp_ovl_adaptor_comp_ops);
if (ret != 0) {
+ component_master_del(dev, &mtk_disp_ovl_adaptor_master_ops);
pm_runtime_disable(dev);
return dev_err_probe(dev, ret, "Failed to add component\n");
}
@@ -626,6 +630,7 @@ static int mtk_disp_ovl_adaptor_probe(st
static void mtk_disp_ovl_adaptor_remove(struct platform_device *pdev)
{
+ component_del(&pdev->dev, &mtk_disp_ovl_adaptor_comp_ops);
component_master_del(&pdev->dev, &mtk_disp_ovl_adaptor_master_ops);
pm_runtime_disable(&pdev->dev);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 250/337] drm/amdgpu: restore UMD profile pstate after runtime resume
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (247 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 249/337] drm/mediatek: ovl_adaptor: balance component registrations Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 251/337] drm/amdgpu: cap GTT size to physical RAM on APUs Greg Kroah-Hartman
` (94 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Candice Li, Hawking Zhang, Yang Wang,
Alex Deucher
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Candice Li <candice.li@amd.com>
commit f931c54b241ce2f36bfc34955aec43a188276b8d upstream.
Runtime suspend runs GFX hw_fini and clears perfmon clock gating while
the UMD profile DPM level remains set in software. Re-apply stable
pstate after a successful runtime resume when a profile mode is active.
Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 138531c8850cc247aa12b104bb29ea387bcdcbb1)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -2824,6 +2824,19 @@ static int amdgpu_pmops_runtime_suspend(
return 0;
}
+static void amdgpu_restore_umd_profile_pstate_after_runpm(struct amdgpu_device *adev)
+{
+ enum amd_dpm_forced_level level;
+ uint32_t profile_mode_mask = AMD_DPM_FORCED_LEVEL_PROFILE_STANDARD |
+ AMD_DPM_FORCED_LEVEL_PROFILE_MIN_SCLK |
+ AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK |
+ AMD_DPM_FORCED_LEVEL_PROFILE_PEAK;
+
+ level = amdgpu_dpm_get_performance_level(adev);
+ if (level & profile_mode_mask)
+ amdgpu_asic_update_umd_stable_pstate(adev, true);
+}
+
static int amdgpu_pmops_runtime_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
@@ -2868,6 +2881,8 @@ static int amdgpu_pmops_runtime_resume(s
if (adev->pm.rpm_mode == AMDGPU_RUNPM_PX)
drm_dev->switch_power_state = DRM_SWITCH_POWER_ON;
+
+ amdgpu_restore_umd_profile_pstate_after_runpm(adev);
adev->in_runpm = false;
return 0;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 251/337] drm/amdgpu: cap GTT size to physical RAM on APUs
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (248 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 250/337] drm/amdgpu: restore UMD profile pstate after runtime resume Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 252/337] drm/amd/display: Increase HDMI AV mute wait from 2 to 3 frames Greg Kroah-Hartman
` (93 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Harkirat Gill, David Francis,
Alex Deucher
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Harkirat Gill <harkirat.gill@amd.com>
commit 5e70f6804b4d6256058c360b10e044ee04ea4a4e upstream.
On APUs, the GTT pool is backed by system RAM, but its size is not bound
to the non-carveout memory that actually backs it. A user can end up
with GTT + VRAM exceeding total physical memory through the following
sequence:
- Have a large non-carveout memory space (~128GB) and accordingly set a
large GTT (~100GB) via the ttm module parameter.
- Lower the non-carveout memory space in BIOS by increasing the UMA
Frame Buffer Size (VRAM) to 64GB.
- The previously set GTT value (~100GB) persists, even though the new
non-carveout space (64GB) can no longer back it.
This leads to a case where kernel reports GTT (100GB) + VRAM (64GB)
despite the sum being greater than total physical memory (128GB).
Cap the GTT size to totalram_pages() on APUs. totalram_pages() already
excludes the VRAM carveout, so the resulting GTT can never exceed the
system RAM that actually backs it.
Signed-off-by: Harkirat Gill <harkirat.gill@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Assisted-by: Claude:claude-opus-4
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 5dafdd649280c7dc6c22c8f877da3f54fcc441e1)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1996,6 +1996,18 @@ int amdgpu_ttm_init(struct amdgpu_device
else
gtt_size = (uint64_t)amdgpu_gtt_size << 20;
+ /* Cap GTT so that it does not exceed total physical RAM. */
+ if (adev->flags & AMD_IS_APU) {
+ u64 phys_ram = (u64)totalram_pages() << PAGE_SHIFT;
+
+ if (gtt_size > phys_ram) {
+ gtt_size = phys_ram;
+ dev_info(adev->dev,
+ "Capping GTT to %uM to not exceed available system memory\n",
+ (unsigned int)(gtt_size / (1024 * 1024)));
+ }
+ }
+
/* Initialize GTT memory pool */
r = amdgpu_gtt_mgr_init(adev, gtt_size);
if (r) {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 252/337] drm/amd/display: Increase HDMI AV mute wait from 2 to 3 frames
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (249 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 251/337] drm/amdgpu: cap GTT size to physical RAM on APUs Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 253/337] drm/amd/display: use proper context for logging Greg Kroah-Hartman
` (92 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Wayne Lin, Ray Wu, Dan Wheeler,
Alex Deucher
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ray Wu <ray.wu@amd.com>
commit c216b39fbbc4b007fd6984cffd85039d49a55154 upstream.
Some HDMI sinks need additional GCP packets to properly process the
mute state before the timing generator is disabled, especially after
link re-establishment with HDMI 2.0 scrambling enabled. Waiting for
only 2 frames is insufficient for certain monitor firmware, resulting
in garbled display output on resume from suspend.
Increase the AV mute wait in dcn30_set_avmute() from 2 to 3 frames
to ensure the sink receives enough GCP packets.
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5167
Assisted-by: Cursor:Claude-Opus-4.6
Reviewed-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 0c0d5174b09640d8b560764aa5a177630e076e93)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c
@@ -821,13 +821,19 @@ void dcn30_set_avmute(struct pipe_ctx *p
pipe_ctx->stream_res.stream_enc,
enable);
- /* Wait for two frame to make sure AV mute is sent out */
+ /* Wait for three frames to make sure AV mute is sent out.
+ * Some HDMI sinks need additional GCP packets to properly
+ * process the mute state, especially after link re-establishment
+ * with HDMI 2.0 scrambling enabled.
+ */
if (enable && pipe_ctx->stream_res.tg->funcs->is_tg_enabled(pipe_ctx->stream_res.tg)) {
+ int i;
+
pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VACTIVE);
- pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VBLANK);
- pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VACTIVE);
- pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VBLANK);
- pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VACTIVE);
+ for (i = 0; i < 3; i++) {
+ pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VBLANK);
+ pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VACTIVE);
+ }
}
}
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 253/337] drm/amd/display: use proper context for logging
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (250 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 252/337] drm/amd/display: Increase HDMI AV mute wait from 2 to 3 frames Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 254/337] drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Bhawanpreet Lakha, Jiri Slaby (SUSE),
Lakha, Bhawanpreet, Harry Wentland, Leo Li, Rodrigo Siqueira,
Alex Deucher, Christian König, David Airlie, Simona Vetter,
amd-gfx
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiri Slaby (SUSE) <jirislaby@kernel.org>
commit 114b42507b6a23d9d24e24e4ef165233332c64d4 upstream.
The same as the rest of the code, get_ss_info_from_atombios() uses
calc_pll_cs->ctx->logger for logging. But calc_pll_cs->ctx is
initialized only later in calc_pll_max_vco_construct(). Therefore, any
output using DC_LOG_SYNC() leads to a NULL pointer deference in
get_ss_info_from_atombios().
According to Sashiko, the very same problem exists in
dce112_get_pix_clk_dividers() and dcn3_get_pix_clk_dividers() too.
To avoid accessing the NULL context, use clk_src->base.ctx->logger
everywhere. That context in base is initialized earlier in
dce110_clk_src_construct() and dce112_clk_src_construct(). Before
get_ss_info_from_atombios() or Sashiko's get_pix_clk_dividers functions
above are actually called. This is done by redefining DC_LOGGER to
CTX->logger.
Before:
dce110_clk_src_construct() did:
-> sets clk_src->base.ctx = ctx;
-> ss_info_from_atombios_create()
-> get_ss_info_from_atombios() <- uses calc_pll_cs->ctx # BOOM
-> calc_pll_max_vco_construct() <- sets calc_pll_cs->ctx
After:
dce110_clk_src_construct() does:
-> sets clk_src->base.ctx = ctx;
-> ss_info_from_atombios_create()
-> get_ss_info_from_atombios() <- uses clk_src->base.ctx
Closes: https://bugzilla.suse.com/show_bug.cgi?id=1271175
Closes: https://lore.kernel.org/all/a9ee54e6-2413-4156-9bde-d528ae3c63a3@kernel.org/
Fixes: 1296423bf23c ("drm/amd/display: define DC_LOGGER for logger")
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Cc: Lakha, Bhawanpreet <Bhawanpreet.Lakha@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Rodrigo Siqueira <siqueira@igalia.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 6f16fcbb0c46a87e3d9685407e906573d60104b0)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c | 20 ++++++++----------
1 file changed, 9 insertions(+), 11 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c
@@ -45,9 +45,7 @@
clk_src->base.ctx
#define DC_LOGGER \
- calc_pll_cs->ctx->logger
-#define DC_LOGGER_INIT() \
- struct calc_pll_clock_source *calc_pll_cs = &clk_src->calc_pll
+ CTX->logger
#undef FN
#define FN(reg_name, field_name) \
@@ -291,6 +289,7 @@ static bool calc_pll_dividers_in_range(
}
static uint32_t calculate_pixel_clock_pll_dividers(
+ struct dce110_clk_src *clk_src,
struct calc_pll_clock_source *calc_pll_cs,
struct pll_settings *pll_settings)
{
@@ -479,7 +478,7 @@ static uint32_t dce110_get_pix_clk_divid
{
uint32_t field = 0;
uint32_t pll_calc_error = MAX_PLL_CALC_ERROR;
- DC_LOGGER_INIT();
+
/* Check if reference clock is external (not pcie/xtalin)
* HW Dce80 spec:
* 00 - PCIE_REFCLK, 01 - XTALIN, 02 - GENERICA, 03 - GENERICB
@@ -522,12 +521,14 @@ static uint32_t dce110_get_pix_clk_divid
/*Calculate Dividers by HDMI object, no SS case or SS case */
pll_calc_error =
calculate_pixel_clock_pll_dividers(
+ clk_src,
&clk_src->calc_pll_hdmi,
pll_settings);
else
/*Calculate Dividers by default object, no SS case or SS case */
pll_calc_error =
calculate_pixel_clock_pll_dividers(
+ clk_src,
&clk_src->calc_pll,
pll_settings);
@@ -572,7 +573,6 @@ static uint32_t dce110_get_pix_clk_divid
{
struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(cs);
uint32_t pll_calc_error = MAX_PLL_CALC_ERROR;
- DC_LOGGER_INIT();
if (pix_clk_params == NULL || pll_settings == NULL
|| pix_clk_params->requested_pix_clk_100hz == 0) {
@@ -604,7 +604,6 @@ static uint32_t dce112_get_pix_clk_divid
struct pll_settings *pll_settings)
{
struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(cs);
- DC_LOGGER_INIT();
if (pix_clk_params == NULL || pll_settings == NULL
|| pix_clk_params->requested_pix_clk_100hz == 0) {
@@ -1366,8 +1365,6 @@ static uint32_t dcn3_get_pix_clk_divider
unsigned long long actual_pix_clk_100Hz = pix_clk_params ? pix_clk_params->requested_pix_clk_100hz : 0;
struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(cs);
- DC_LOGGER_INIT();
-
if (pix_clk_params == NULL || pll_settings == NULL
|| pix_clk_params->requested_pix_clk_100hz == 0) {
DC_LOG_ERROR(
@@ -1437,7 +1434,6 @@ static const struct clock_source_funcs d
.get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
};
-
static void get_ss_info_from_atombios(
struct dce110_clk_src *clk_src,
enum as_signal_type as_signal,
@@ -1450,7 +1446,7 @@ static void get_ss_info_from_atombios(
struct spread_spectrum_info *ss_info_cur;
struct spread_spectrum_data *ss_data_cur;
uint32_t i;
- DC_LOGGER_INIT();
+
if (ss_entries_num == NULL) {
DC_LOG_SYNC(
"Invalid entry !!!\n");
@@ -1585,6 +1581,7 @@ static void ss_info_from_atombios_create
}
static bool calc_pll_max_vco_construct(
+ struct dce110_clk_src *clk_src,
struct calc_pll_clock_source *calc_pll_cs,
struct calc_pll_clock_source_init_data *init_data)
{
@@ -1736,6 +1733,7 @@ bool dce110_clk_src_construct(
ss_info_from_atombios_create(clk_src);
if (!calc_pll_max_vco_construct(
+ clk_src,
&clk_src->calc_pll,
&calc_pll_cs_init_data)) {
ASSERT_CRITICAL(false);
@@ -1750,7 +1748,7 @@ bool dce110_clk_src_construct(
if (!calc_pll_max_vco_construct(
- &clk_src->calc_pll_hdmi, &calc_pll_cs_init_data_hdmi)) {
+ clk_src, &clk_src->calc_pll_hdmi, &calc_pll_cs_init_data_hdmi)) {
ASSERT_CRITICAL(false);
goto unexpected_failure;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 254/337] drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (251 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 253/337] drm/amd/display: use proper context for logging Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 255/337] drm/amdkfd: fix QID bit leak in pqm_create_queue() Greg Kroah-Hartman
` (90 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Gang Ba, Kent Russell, Alex Deucher
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gang Ba <Gang.Ba@amd.com>
commit 99b2fe4f19e3be0a8d0a0b5ea98d855970889653 upstream.
Prevent unauthorized termination of active GPU debug sessions.
Previously, users with /dev/kfd access could terminate another process's
debug session without proper ownership or ptrace authorization.
Signed-off-by: Gang Ba <Gang.Ba@amd.com>
Reviewed-by: Kent Russell <kent.russell@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 4db4c5ffd5585b72622ecf6ffedf2da258ee23f5)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -2978,10 +2978,14 @@ static int kfd_ioctl_set_debug_trap(stru
goto out;
}
- /* Check if target is still PTRACED. */
+ /*
+ * Verify debugger has permission to debug target process.
+ * For cross-process debugging, require active ptrace relationship.
+ * This applies to ALL operations to prevent unauthorized interference.
+ */
rcu_read_lock();
- if (target != p && args->op != KFD_IOC_DBG_TRAP_DISABLE
- && ptrace_parent(target->lead_thread) != current) {
+ if (target != p && ptrace_parent(target->lead_thread) != current
+ && target->debugger_process != p) {
pr_err("PID %i is not PTRACED and cannot be debugged\n", args->pid);
r = -EPERM;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 255/337] drm/amdkfd: fix QID bit leak in pqm_create_queue()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (252 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 254/337] drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 256/337] drm/amdkfd: fix uint32_t overflow in EOP ring buffer size alignment Greg Kroah-Hartman
` (89 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Deucher, Alexander,
Vladimir Marioukhine, Kent Russell
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vladimir Marioukhine <Vladimir.Marioukhine@amd.com>
commit 38b73293f38658a4685ffcea666462024f858ad9 upstream.
When MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during
the first queue creation for a process, pqm_create_queue() returns
early via 'return retval' without going through the err_create_queue
cleanup label.
This means clear_bit(*qid, pqm->queue_slot_bitmap) is never called,
leaving the reserved QID bit permanently set in queue_slot_bitmap.
Over time this leaks QID slots, potentially exhausting all available
queue slots.
Fix this by replacing 'return retval' with 'goto err_allocate_pqn'
so that clear_bit() is always called on the error path without
touching the uninitialized pqn pointer.
AILIKFD-813
Reported-by: Deucher, Alexander <alexander.deucher@amd.com>
Signed-off-by: Vladimir Marioukhine <Vladimir.Marioukhine@amd.com>
Reviewed-by: Kent Russell <kent.russell@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a107f74c38edbb80d6ab64dcaeeb292c14e9779f)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -376,7 +376,7 @@ int pqm_create_queue(struct process_queu
false);
if (retval) {
dev_err(dev->adev->dev, "failed to allocate process context bo\n");
- return retval;
+ goto err_allocate_pqn;
}
memset(pdd->proc_ctx_cpu_ptr, 0, AMDGPU_MES_PROC_CTX_SIZE);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 256/337] drm/amdkfd: fix uint32_t overflow in EOP ring buffer size alignment
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (253 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 255/337] drm/amdkfd: fix QID bit leak in pqm_create_queue() Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 257/337] drm/amdkfd: Handle invalid event type in CRIU event restore Greg Kroah-Hartman
` (88 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, William Palacek, Alysa Liu,
Alex Deucher
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: William Palacek <William.Palacek@amd.com>
commit 83463a96ea3c7d8ae636a4d6a0ba63c9ce410724 upstream.
eop_ring_buffer_size in struct queue_properties is a u32. In
kfd_queue_acquire_buffers() the expected EOP buffer size is computed as
ALIGN(eop_ring_buffer_size, PAGE_SIZE); ALIGN uses typeof(x), so the
addition is done in 32-bit. A user-supplied size of 0xFFFFF001 wraps to
0, causing kfd_queue_buffer_get() to skip its exact-size check (gated on
size != 0) and accept any BO mapped at the address. On GFX8/GFX9 the MQD
cp_hqd_eop_control is then programmed for an 8KB EOP ring backed by a 4KB
BO, so CP EOP writes can land past the buffer and fault the GPU.
Cast the operand to u64 so the alignment is computed in 64-bit; the size
check in kfd_queue_buffer_get() then rejects the oversized request.
Fixes: 42ea9cf2f16b ("drm/amdkfd: Relax size checking during queue buffer get")
Signed-off-by: William Palacek <William.Palacek@amd.com>
Reviewed-by: Alysa Liu <Alysa.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit ae443117b742c357bfef3a7bddabf76fcf86e9ef)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdkfd/kfd_queue.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_queue.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_queue.c
@@ -285,7 +285,7 @@ int kfd_queue_acquire_buffers(struct kfd
}
err = kfd_queue_buffer_get(vm, (void *)properties->eop_ring_buffer_address,
&properties->eop_buf_bo,
- ALIGN(properties->eop_ring_buffer_size, PAGE_SIZE));
+ ALIGN((u64)properties->eop_ring_buffer_size, PAGE_SIZE));
if (err)
goto out_err_unreserve;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 257/337] drm/amdkfd: Handle invalid event type in CRIU event restore
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (254 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 256/337] drm/amdkfd: fix uint32_t overflow in EOP ring buffer size alignment Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 258/337] drm/amdkfd: hold event_mutex while checkpointing CRIU events Greg Kroah-Hartman
` (87 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Francis, Kent Russell,
Alex Deucher
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Francis <David.Francis@amd.com>
commit a9cdc85839e4fe2c760aa4ca6cc341c31ad1918a upstream.
In kfd_criu_restore_event, there was no handling for
the event priv data having an invalid event type. The priv
data here is untrusted and can be invalid.
In that case, fail with EINVAL.
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Kent Russell <kent.russell@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 2e8e9963cd5c41aa14fd5316bf9ec92e7a0e3097)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdkfd/kfd_events.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
@@ -521,6 +521,9 @@ int kfd_criu_restore_event(struct file *
ret = create_other_event(p, ev, &ev_priv->event_id);
break;
+ default:
+ ret = -EINVAL;
+ break;
}
mutex_unlock(&p->event_mutex);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 258/337] drm/amdkfd: hold event_mutex while checkpointing CRIU events
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (255 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 257/337] drm/amdkfd: Handle invalid event type in CRIU event restore Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 259/337] drm/vmwgfx: fix guest_memory_dirty bitfield clobbered as size Greg Kroah-Hartman
` (86 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, William Palacek, Alysa Liu,
Alex Deucher
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: William Palacek <William.Palacek@amd.com>
commit ff8bc5a68a9a70bdc38d61a72c7a49c56063f9d2 upstream.
kfd_criu_checkpoint_events() counts the entries in p->event_idr via
kfd_get_num_events(), allocates an array sized to that count, and then
walks the same IDR to fill it. Neither the count nor the walk holds
p->event_mutex.
The CRIU checkpoint caller holds only p->mutex. Event create and destroy
(kfd_event_create()/kfd_event_destroy()) take p->event_mutex and do not
take p->mutex, so a second thread in the same process can insert or remove
events between the count and the walk. If an event is inserted, the walk
iterates more entries than were counted and writes past the end of the
ev_privs allocation; if an event is removed, the walk dereferences an
entry that is being freed.
Hold p->event_mutex across the count and the walk so both observe a
consistent view of p->event_idr. The lock is released before
copy_to_user(), which only touches the local buffer. The caller already
holds p->mutex and the create/destroy paths never take p->mutex, so the
p->mutex -> p->event_mutex order is not inverted and no deadlock is
introduced.
Fixes: 40e8a766a761 ("drm/amdkfd: CRIU checkpoint and restore events")
Signed-off-by: William Palacek <William.Palacek@amd.com>
Reviewed-by: Alysa Liu <Alysa.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit ff57e223ab105795b05d3ef3f3c35a5a441bcbaa)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdkfd/kfd_events.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
@@ -545,15 +545,27 @@ int kfd_criu_checkpoint_events(struct kf
int ret = 0;
struct kfd_event *ev;
uint32_t ev_id;
+ uint32_t num_events;
- uint32_t num_events = kfd_get_num_events(p);
-
- if (!num_events)
+ /* Serialize the count and the walk below against concurrent event
+ * create/destroy. Those paths take only p->event_mutex, not the
+ * p->mutex held by the CRIU checkpoint caller, so without this the
+ * event_idr can grow between kfd_get_num_events() and the loop and the
+ * walk writes past the ev_privs allocation.
+ */
+ mutex_lock(&p->event_mutex);
+
+ num_events = kfd_get_num_events(p);
+ if (!num_events) {
+ mutex_unlock(&p->event_mutex);
return 0;
+ }
ev_privs = kvzalloc(num_events * sizeof(*ev_privs), GFP_KERNEL);
- if (!ev_privs)
+ if (!ev_privs) {
+ mutex_unlock(&p->event_mutex);
return -ENOMEM;
+ }
idr_for_each_entry(&p->event_idr, ev, ev_id) {
@@ -594,6 +606,8 @@ int kfd_criu_checkpoint_events(struct kf
i++;
}
+ mutex_unlock(&p->event_mutex);
+
ret = copy_to_user(user_priv_data + *priv_data_offset,
ev_privs, num_events * sizeof(*ev_privs));
if (ret) {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 259/337] drm/vmwgfx: fix guest_memory_dirty bitfield clobbered as size
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (256 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 258/337] drm/amdkfd: hold event_mutex while checkpointing CRIU events Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 260/337] drm/vmwgfx: reject DX_BIND_QUERY without a DX context Greg Kroah-Hartman
` (85 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zack Rusin, Ian Forbes
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zack Rusin <zack.rusin@broadcom.com>
commit 83195b778f2d109a3a4f3ffaba4dce7e4cdb58aa upstream.
Two sites in vmwgfx_resource.c assign boolean literals to
res->guest_memory_size, which is an unsigned long allocation-size
field; the intended target is the adjacent res->guest_memory_dirty
bitfield. After the assignments the field holds 0 or 1 instead of
the resource's MOB allocation size:
- vmw_resource_release() writes 0 (false), and
- vmw_resource_unbind_list() writes 1 (true).
Subsequent revalidation paths read guest_memory_size when computing
the dirty page range (vmw_bo_dirty_transfer_to_res()) and the buffer
allocation size (vmw_resource_buf_alloc()), producing zero-length
walks or wrap-around ranges that read or write past the MOB bitmap.
The dirty-tracking intent of the original code (mark the resource as
dirtied since the last sync) is also lost, since guest_memory_dirty
is never updated.
Rename both assignments to guest_memory_dirty.
Fixes: 668b206601c5 ("drm/vmwgfx: Stop using raw ttm_buffer_object's")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.7
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Ian Forbes <ian.forbes@broadcom.com>
Link: https://patch.msgid.link/20260505222728.519626-2-zack.rusin@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -136,7 +136,7 @@ static void vmw_resource_release(struct
val_buf.num_shared = 0;
res->func->unbind(res, false, &val_buf);
}
- res->guest_memory_size = false;
+ res->guest_memory_dirty = false;
vmw_resource_mob_detach(res);
if (res->dirty)
res->func->dirty_free(res);
@@ -773,7 +773,7 @@ void vmw_resource_unbind_list(struct vmw
if (!WARN_ON_ONCE(!res->func->unbind))
(void) res->func->unbind(res, res->res_dirty, &val_buf);
- res->guest_memory_size = true;
+ res->guest_memory_dirty = true;
res->res_dirty = false;
vmw_resource_mob_detach(res);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 260/337] drm/vmwgfx: reject DX_BIND_QUERY without a DX context
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (257 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 259/337] drm/vmwgfx: fix guest_memory_dirty bitfield clobbered as size Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 261/337] drm/vmwgfx: drop dma_buf reference on foreign-fd prime import Greg Kroah-Hartman
` (84 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zack Rusin, Ian Forbes
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zack Rusin <zack.rusin@broadcom.com>
commit 55ec09c9ce10b1272802c7ab6c1be2ea0dbc68db upstream.
vmw_cmd_dx_bind_query() unconditionally dereferences
sw_context->dx_ctx_node->ctx. Userspace can trigger a NULL pointer
dereference from any render-node fd by submitting an execbuf with
dx_context_handle == SVGA3D_INVALID_ID and a SVGA_3D_CMD_DX_BIND_QUERY
opcode in the command stream: dx_ctx_node is left NULL and the kernel
oopses on the assignment. The same NULL is then re-read in
vmw_resources_reserve() via vmw_context_get_dx_query_mob().
All sibling DX handlers fail-close on a missing dx_ctx_node using
VMW_GET_CTX_NODE(). Use the same pattern here, returning -EINVAL up
front before any relocation state is published.
Fixes: 9c079b8ce8bf ("drm/vmwgfx: Adapt execbuf to the new validation api")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.7
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Ian Forbes <ian.forbes@broadcom.com>
Link: https://patch.msgid.link/20260505222728.519626-3-zack.rusin@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -1290,9 +1290,13 @@ static int vmw_cmd_dx_bind_query(struct
SVGA3dCmdHeader *header)
{
VMW_DECLARE_CMD_VAR(*cmd, SVGA3dCmdDXBindQuery);
+ struct vmw_ctx_validation_info *ctx_node = VMW_GET_CTX_NODE(sw_context);
struct vmw_bo *vmw_bo;
int ret;
+ if (!ctx_node)
+ return -EINVAL;
+
cmd = container_of(header, typeof(*cmd), header);
/*
@@ -1306,7 +1310,7 @@ static int vmw_cmd_dx_bind_query(struct
return ret;
sw_context->dx_query_mob = vmw_bo;
- sw_context->dx_query_ctx = sw_context->dx_ctx_node->ctx;
+ sw_context->dx_query_ctx = ctx_node->ctx;
return 0;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 261/337] drm/vmwgfx: drop dma_buf reference on foreign-fd prime import
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (258 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 260/337] drm/vmwgfx: reject DX_BIND_QUERY without a DX context Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 262/337] drm/vmwgfx: validate DRAW_PRIMITIVES header size before division Greg Kroah-Hartman
` (83 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zack Rusin, Ian Forbes
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zack Rusin <zack.rusin@broadcom.com>
commit f739416dc555fa205a785e5135d73fa39b26f35d upstream.
ttm_prime_fd_to_handle() returns -ENOSYS when the imported fd's
dma_buf->ops do not match the ttm_object_device's ops, but does so
without releasing the reference acquired by dma_buf_get(). Any
unprivileged renderD client passing a non-vmwgfx prime fd through the
DRM_VMW_GB_SURFACE_REF{,_EXT} path leaks one dma_buf reference per
call and indefinitely pins the foreign exporter's GEM resources.
Funnel the error path through the existing dma_buf_put() so the
reference is always dropped.
Fixes: 65981f7681ab ("drm/ttm: Add a minimal prime implementation for ttm base objects")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.7
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Ian Forbes <ian.forbes@broadcom.com>
Link: https://patch.msgid.link/20260505222728.519626-6-zack.rusin@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vmwgfx/ttm_object.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/vmwgfx/ttm_object.c
+++ b/drivers/gpu/drm/vmwgfx/ttm_object.c
@@ -547,14 +547,17 @@ int ttm_prime_fd_to_handle(struct ttm_ob
if (IS_ERR(dma_buf))
return PTR_ERR(dma_buf);
- if (dma_buf->ops != &tdev->ops)
- return -ENOSYS;
+ if (dma_buf->ops != &tdev->ops) {
+ ret = -ENOSYS;
+ goto out;
+ }
prime = (struct ttm_prime_object *) dma_buf->priv;
base = &prime->base;
*handle = base->handle;
ret = ttm_ref_object_add(tfile, base, NULL, false);
+out:
dma_buf_put(dma_buf);
return ret;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 262/337] drm/vmwgfx: validate DRAW_PRIMITIVES header size before division
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (259 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 261/337] drm/vmwgfx: drop dma_buf reference on foreign-fd prime import Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 263/337] drm/vmwgfx: bound DMA command body size against suffix pointer Greg Kroah-Hartman
` (82 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zack Rusin, Ian Forbes
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zack Rusin <zack.rusin@broadcom.com>
commit 85891d174707d8bddcec7a888fb4e1d17def34f3 upstream.
vmw_cmd_draw() computes
maxnum = (header->size - sizeof(cmd->body)) / sizeof(*decl);
where header->size is u32 and is taken straight from the user-supplied
command stream. When header->size is less than sizeof(cmd->body) the
unsigned subtraction wraps to nearly 4 GiB, producing a huge maxnum.
Any user-controlled cmd->body.numVertexDecls then passes the bound and
the loop dereferences decl[i] far past the end of the kernel command
bounce buffer, producing an out-of-bounds read of kernel memory.
Reject undersized headers up front.
Fixes: 7a73ba7469cb ("drm/vmwgfx: Use TTM handles instead of SIDs as user-space surface handles.")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.7
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Ian Forbes <ian.forbes@broadcom.com>
Link: https://patch.msgid.link/20260505222728.519626-7-zack.rusin@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -1589,11 +1589,17 @@ static int vmw_cmd_draw(struct vmw_priva
uint32_t maxnum;
int ret;
+ cmd = container_of(header, typeof(*cmd), header);
+
+ if (unlikely(header->size < sizeof(cmd->body))) {
+ VMW_DEBUG_USER("Illegal DRAW_PRIMITIVES header size.\n");
+ return -EINVAL;
+ }
+
ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
if (unlikely(ret != 0))
return ret;
- cmd = container_of(header, typeof(*cmd), header);
maxnum = (header->size - sizeof(cmd->body)) / sizeof(*decl);
if (unlikely(cmd->body.numVertexDecls > maxnum)) {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 263/337] drm/vmwgfx: bound DMA command body size against suffix pointer
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (260 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 262/337] drm/vmwgfx: validate DRAW_PRIMITIVES header size before division Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 264/337] drm/vmwgfx: avoid destroy_workqueue(NULL) on vkms init failure Greg Kroah-Hartman
` (81 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zack Rusin, Ian Forbes
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zack Rusin <zack.rusin@broadcom.com>
commit f4f1db96bfd68b81053693ba53405b6f510ac16c upstream.
vmw_cmd_dma() locates the DMA suffix at
(unsigned long) &cmd->body + header->size - sizeof(*suffix)
without checking that header->size is large enough to contain both
cmd->body and the suffix. An undersized header makes the suffix
pointer underflow back into the previous command in the bounce
buffer. The verifier later writes suffix->maximumOffset, clobbering
verified fields of an already-relocated earlier command -- a TOCTOU
on the device-visible command stream that lets one command rewrite
another's GMR id, surface id, or other authenticated fields.
Reject the command if the body is too small for the suffix to fit.
Fixes: 4e4ddd477743 ("drm/vmwgfx: Fix queries if no dma buffer thrashing is occuring.")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.7
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Ian Forbes <ian.forbes@broadcom.com>
Link: https://patch.msgid.link/20260505222728.519626-8-zack.rusin@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -1528,6 +1528,12 @@ static int vmw_cmd_dma(struct vmw_privat
bool dirty;
cmd = container_of(header, typeof(*cmd), header);
+
+ if (unlikely(header->size < sizeof(cmd->body) + sizeof(*suffix))) {
+ VMW_DEBUG_USER("Illegal SVGA_3D_CMD_SURFACE_DMA size.\n");
+ return -EINVAL;
+ }
+
suffix = (SVGA3dCmdSurfaceDMASuffix *)((unsigned long) &cmd->body +
header->size - sizeof(*suffix));
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 264/337] drm/vmwgfx: avoid destroy_workqueue(NULL) on vkms init failure
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (261 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 263/337] drm/vmwgfx: bound DMA command body size against suffix pointer Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 265/337] drm/vmwgfx: use check_add_overflow for shader size+offset bound Greg Kroah-Hartman
` (80 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zack Rusin, Ian Forbes
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zack Rusin <zack.rusin@broadcom.com>
commit 05eaa887e7b4f40fba425f8a1d7a5a8a043092a6 upstream.
Two paths through vmw_vkms_init() can leave vmw->crc_workq NULL while
still leaving the rest of the driver in a state that calls
vmw_vkms_cleanup() at module unload:
1. vmw_host_get_guestinfo(GUESTINFO_VBLANK, ...) failing or
returning an oversized buffer -- the common case on hosts
without a VBLANK guestinfo entry -- early-returned before the
workqueue allocation.
2. alloc_ordered_workqueue() returning NULL on memory pressure.
vmw_vkms_cleanup() then calls destroy_workqueue(NULL), which
dereferences wq->name and panics.
Fix the first case by removing the early return: vmw->vkms_enabled
is already false on the rpci-failure path so no work will ever be
queued, and allocating the workqueue unconditionally keeps the
control flow simple. Fix the second case by guarding the cleanup
with a NULL check, since alloc_ordered_workqueue() can still fail
under low memory.
Fixes: 7b0062036c3b ("drm/vmwgfx: Implement virtual crc generation")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.7
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Ian Forbes <ian.forbes@broadcom.com>
Link: https://patch.msgid.link/20260505222728.519626-9-zack.rusin@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vmwgfx/vmwgfx_vkms.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_vkms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_vkms.c
@@ -214,14 +214,14 @@ vmw_vkms_init(struct vmw_private *vmw)
vmw->vkms_enabled = false;
ret = vmw_host_get_guestinfo(GUESTINFO_VBLANK, buffer, &buf_len);
- if (ret || buf_len > max_buf_len)
- return;
- buffer[buf_len] = '\0';
+ if (!ret && buf_len <= max_buf_len) {
+ buffer[buf_len] = '\0';
- ret = kstrtobool(buffer, &vmw->vkms_enabled);
- if (!ret && vmw->vkms_enabled) {
- ret = drm_vblank_init(&vmw->drm, VMWGFX_NUM_DISPLAY_UNITS);
- vmw->vkms_enabled = (ret == 0);
+ ret = kstrtobool(buffer, &vmw->vkms_enabled);
+ if (!ret && vmw->vkms_enabled) {
+ ret = drm_vblank_init(&vmw->drm, VMWGFX_NUM_DISPLAY_UNITS);
+ vmw->vkms_enabled = (ret == 0);
+ }
}
vmw->crc_workq = alloc_ordered_workqueue("vmwgfx_crc_generator", 0);
@@ -236,7 +236,8 @@ vmw_vkms_init(struct vmw_private *vmw)
void
vmw_vkms_cleanup(struct vmw_private *vmw)
{
- destroy_workqueue(vmw->crc_workq);
+ if (vmw->crc_workq)
+ destroy_workqueue(vmw->crc_workq);
}
bool
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 265/337] drm/vmwgfx: use check_add_overflow for shader size+offset bound
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (262 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 264/337] drm/vmwgfx: avoid destroy_workqueue(NULL) on vkms init failure Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 266/337] drm/vmwgfx: validate external BO copy bounds for both stride paths Greg Kroah-Hartman
` (79 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zack Rusin, Ian Forbes
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zack Rusin <zack.rusin@broadcom.com>
commit 54d56d5b42d2e4c72ba6e365e9774da90698aa22 upstream.
vmw_shader_define() validates the user-supplied shader window against
its backing buffer with
(u64)buffer->tbo.base.size < (u64)size + (u64)offset
drm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is
near U64_MAX the unsigned addition wraps and the resulting tiny value
passes the check. The unbounded offset is then stored in
res->guest_memory_offset and forwarded to host SVGA shader-create
commands.
Use check_add_overflow() to detect the wrap and compare the resulting
endpoint against the buffer size.
Fixes: 668b206601c5 ("drm/vmwgfx: Stop using raw ttm_buffer_object's")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.7
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Ian Forbes <ian.forbes@broadcom.com>
Link: https://patch.msgid.link/20260505222728.519626-12-zack.rusin@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vmwgfx/vmwgfx_shader.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c
@@ -25,6 +25,8 @@
*
**************************************************************************/
+#include <linux/overflow.h>
+
#include <drm/ttm/ttm_placement.h>
#include "vmwgfx_binding.h"
@@ -685,7 +687,7 @@ int vmw_shader_destroy_ioctl(struct drm_
static int vmw_user_shader_alloc(struct vmw_private *dev_priv,
struct vmw_bo *buffer,
size_t shader_size,
- size_t offset,
+ u64 offset,
SVGA3dShaderType shader_type,
uint8_t num_input_sig,
uint8_t num_output_sig,
@@ -739,7 +741,7 @@ out:
static struct vmw_resource *vmw_shader_alloc(struct vmw_private *dev_priv,
struct vmw_bo *buffer,
size_t shader_size,
- size_t offset,
+ u64 offset,
SVGA3dShaderType shader_type)
{
struct vmw_shader *shader;
@@ -768,7 +770,7 @@ out_err:
static int vmw_shader_define(struct drm_device *dev, struct drm_file *file_priv,
enum drm_vmw_shader_type shader_type_drm,
- u32 buffer_handle, size_t size, size_t offset,
+ u32 buffer_handle, size_t size, u64 offset,
uint8_t num_input_sig, uint8_t num_output_sig,
uint32_t *shader_handle)
{
@@ -779,13 +781,16 @@ static int vmw_shader_define(struct drm_
int ret;
if (buffer_handle != SVGA3D_INVALID_ID) {
+ u64 end;
+
ret = vmw_user_bo_lookup(file_priv, buffer_handle, &buffer);
if (unlikely(ret != 0)) {
VMW_DEBUG_USER("Couldn't find buffer for shader creation.\n");
return ret;
}
- if ((u64)buffer->tbo.base.size < (u64)size + (u64)offset) {
+ if (check_add_overflow((u64)size, (u64)offset, &end) ||
+ end > buffer->tbo.base.size) {
VMW_DEBUG_USER("Illegal buffer- or shader size.\n");
ret = -EINVAL;
goto out_bad_arg;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 266/337] drm/vmwgfx: validate external BO copy bounds for both stride paths
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (263 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 265/337] drm/vmwgfx: use check_add_overflow for shader size+offset bound Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 267/337] spi: spi-cadence: enable SPI_CONTROLLER_MUST_TX Greg Kroah-Hartman
` (78 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Zack Rusin, Ian Forbes
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zack Rusin <zack.rusin@broadcom.com>
commit 706c93c5813caabbb0d0a576c017d15aeec2c113 upstream.
vmw_external_bo_copy() trusts caller-supplied offsets, strides, and
heights and operates on imported dma-buf vmaps:
- The equal-stride memcpy() bound was clamped after subtracting the
offsets from dst_size and src_size; an offset larger than the BO
size wraps the unsigned subtraction to a huge value and the
resulting memcpy() runs off the end of the vmap. dst_stride *
height is also a u32 multiplication that can overflow.
- The non-equal-stride row-by-row path had no bound at all. The
loop touches bytes through offset + (height - 1) * stride +
width_in_bytes, with only a WARN_ON(dst_stride < width_in_bytes),
and could likewise step past the end of either mapping.
The offsets and strides are derived from STDU/SOU plane state, so a
configured CRTC submitting a crafted atomic commit on an imported
framebuffer can reach this path.
Validate the exact row-copy endpoint against each BO's size up front
using check_mul_overflow() and check_add_overflow(). Use the bulk
memcpy() path only when width_in_bytes covers the whole stride;
otherwise copy one row at a time so partial-row updates near the bottom
of a framebuffer remain valid. Also reject zero strides and stride <
width_in_bytes, both of which the row-by-row path cannot represent
safely.
Fixes: 50f119925091 ("drm/vmwgfx: Fix prime with external buffers")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.7
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Ian Forbes <ian.forbes@broadcom.com>
Link: https://patch.msgid.link/20260505222728.519626-13-zack.rusin@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/vmwgfx/vmwgfx_blit.c | 39 +++++++++++++++++++++++++++--------
1 file changed, 31 insertions(+), 8 deletions(-)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c
@@ -30,6 +30,7 @@
#include "vmwgfx_bo.h"
#include <linux/highmem.h>
+#include <linux/overflow.h>
/*
* Template that implements find_first_diff() for a generic
@@ -463,19 +464,42 @@ static int vmw_external_bo_copy(struct v
container_of(dst->tbo.bdev, struct vmw_private, bdev);
size_t dst_size = dst->tbo.resource->size;
size_t src_size = src->tbo.resource->size;
+ size_t dst_end, src_end;
struct iosys_map dst_map = {0};
struct iosys_map src_map = {0};
+ bool dst_mapped = false;
+ bool src_mapped = false;
int ret, i;
int x_in_bytes;
u8 *vsrc;
u8 *vdst;
+ if (!height || !width_in_bytes)
+ return 0;
+
+ if (!dst_stride || !src_stride)
+ return -EINVAL;
+ if (dst_stride < width_in_bytes || src_stride < width_in_bytes)
+ return -EINVAL;
+ if (check_mul_overflow((size_t)dst_stride, (size_t)height - 1, &dst_end) ||
+ check_add_overflow(dst_end, (size_t)width_in_bytes, &dst_end) ||
+ check_add_overflow((size_t)dst_offset, dst_end, &dst_end) ||
+ dst_end > dst_size ||
+ check_mul_overflow((size_t)src_stride, (size_t)height - 1, &src_end) ||
+ check_add_overflow(src_end, (size_t)width_in_bytes, &src_end) ||
+ check_add_overflow((size_t)src_offset, src_end, &src_end) ||
+ src_end > src_size) {
+ drm_dbg_driver(&vmw->drm, "Out-of-bounds external BO copy\n");
+ return -EINVAL;
+ }
+
vsrc = map_external(src, &src_map);
if (!vsrc) {
drm_dbg_driver(&vmw->drm, "Wasn't able to map src\n");
ret = -ENOMEM;
goto out;
}
+ src_mapped = true;
vdst = map_external(dst, &dst_map);
if (!vdst) {
@@ -483,16 +507,13 @@ static int vmw_external_bo_copy(struct v
ret = -ENOMEM;
goto out;
}
+ dst_mapped = true;
vsrc += src_offset;
vdst += dst_offset;
- if (src_stride == dst_stride) {
- dst_size -= dst_offset;
- src_size -= src_offset;
- memcpy(vdst, vsrc,
- min(dst_stride * height, min(dst_size, src_size)));
+ if (src_stride == dst_stride && width_in_bytes == dst_stride) {
+ memcpy(vdst, vsrc, dst_stride * (size_t)height);
} else {
- WARN_ON(dst_stride < width_in_bytes);
for (i = 0; i < height; ++i) {
memcpy(vdst, vsrc, width_in_bytes);
vsrc += src_stride;
@@ -508,8 +529,10 @@ static int vmw_external_bo_copy(struct v
ret = 0;
out:
- unmap_external(src, &src_map);
- unmap_external(dst, &dst_map);
+ if (src_mapped)
+ unmap_external(src, &src_map);
+ if (dst_mapped)
+ unmap_external(dst, &dst_map);
return ret;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 267/337] spi: spi-cadence: enable SPI_CONTROLLER_MUST_TX
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (264 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 266/337] drm/vmwgfx: validate external BO copy bounds for both stride paths Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 268/337] HID: logitech-dj: Fix maxfield check in DJ short report validation Greg Kroah-Hartman
` (77 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Rodrigo Alencar, Jun Guo, Mark Brown
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jun Guo <jun.guo@cixtech.com>
commit f6b625639e39bc384a7bddbf134a698d40258b3b upstream.
During an SPI read operation, even if the xspi->txbuf passed to the
cdns_spi_writerinterface is empty, it is still necessary to call
cdns_spi_write(xspi, CDNS_SPI_TXD, txw); otherwise, the read operation
will fail to obtain data correctly due to a lack of clocks.
Fixes: 4e00135b2dd1 ("spi: spi-cadence: supports transmission with bits_per_word of 16 and 32")
Reported-by: Rodrigo Alencar <455.rodrigo.alencar@gmail.com>
Closes: https://lore.kernel.org/all/lbijvnnwsnddonmm5pveqzap6iibxhl4maneq43x4j6w64dev6@u75qhm5cwiob/
Signed-off-by: Jun Guo <jun.guo@cixtech.com>
Link: https://patch.msgid.link/20260115091924.844179-1-jun.guo@cixtech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/spi/spi-cadence.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/spi/spi-cadence.c
+++ b/drivers/spi/spi-cadence.c
@@ -735,6 +735,7 @@ static int cdns_spi_probe(struct platfor
ctlr->unprepare_transfer_hardware = cdns_unprepare_transfer_hardware;
ctlr->mode_bits = SPI_CPOL | SPI_CPHA;
ctlr->bits_per_word_mask = SPI_BPW_MASK(8);
+ ctlr->flags = SPI_CONTROLLER_MUST_TX;
if (of_device_is_compatible(pdev->dev.of_node, "cix,sky1-spi-r1p6"))
ctlr->bits_per_word_mask |= SPI_BPW_MASK(16) | SPI_BPW_MASK(32);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 268/337] HID: logitech-dj: Fix maxfield check in DJ short report validation
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (265 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 267/337] spi: spi-cadence: enable SPI_CONTROLLER_MUST_TX Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 269/337] ata: libahci_platform: Do not set mask_port_map when not needed Greg Kroah-Hartman
` (76 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, HyeongJun An, Jiri Kosina
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: HyeongJun An <sammiee5311@gmail.com>
commit 590cc4d782487632a52f37c2171bee1eeea29627 upstream.
Commit b6a57912854e ("HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT
related user initiated OOB write") added validation for the DJ short
output report, but the error path dereferences rep->field[0] even when
rep->maxfield is zero.
Commit 8b9a097eb2fc ("HID: logitech-dj: fix wrong detection of bad
DJ_SHORT output report") made the check conditional on rep being present,
but a crafted descriptor can still create report ID 0x20 with only padding
output items. hid-core registers the report, ignores the padding field,
and leaves rep->maxfield as zero.
In that case the validation enters the rep->maxfield < 1 branch and then
dereferences rep->field[0]->report_count while printing the error message,
causing a NULL pointer dereference during probe. This is reproducible with
uhid by emulating a Logitech receiver with a padding-only DJ short output
report:
BUG: KASAN: null-ptr-deref in logi_dj_probe+0xb1/0x754 [hid_logitech_dj]
Read of size 4 at addr 0000000000000028 by task kworker/4:1/129
...
Call Trace:
logi_dj_probe+0xb1/0x754 [hid_logitech_dj]
hid_device_probe+0x329/0x3f0 [hid]
really_probe+0x162/0x570
__device_attach+0x137/0x2c0
bus_probe_device+0x38/0xc0
device_add+0xa56/0xce0
hid_add_device+0x19c/0x280 [hid]
uhid_device_add_worker+0x2c/0xb0 [uhid]
Reject the zero-field report before printing the field report_count.
Fixes: b6a57912854e ("HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: HyeongJun An <sammiee5311@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hid/hid-logitech-dj.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -1797,8 +1797,13 @@ static int logi_dj_probe(struct hid_devi
output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
rep = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT];
- if (rep && (rep->maxfield < 1 ||
- rep->field[0]->report_count != DJREPORT_SHORT_LENGTH - 1)) {
+ if (rep && rep->maxfield < 1) {
+ hid_err(hdev, "Expected size of DJ short report is %d, but got 0",
+ DJREPORT_SHORT_LENGTH - 1);
+ return -EINVAL;
+ }
+
+ if (rep && rep->field[0]->report_count != DJREPORT_SHORT_LENGTH - 1) {
hid_err(hdev, "Expected size of DJ short report is %d, but got %d",
DJREPORT_SHORT_LENGTH - 1, rep->field[0]->report_count);
return -EINVAL;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 269/337] ata: libahci_platform: Do not set mask_port_map when not needed
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (266 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 268/337] HID: logitech-dj: Fix maxfield check in DJ short report validation Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 270/337] ata: ahci: Make ahci_ignore_port() handle empty mask_port_map Greg Kroah-Hartman
` (75 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Klaus Kudielka, Damien Le Moal,
Josua Mayer, Niklas Cassel
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Damien Le Moal <dlemoal@kernel.org>
commit 2c202e6c4f4dd19d2e8c1dfac9df05170aa3934f upstream.
Commit 8c87215dd3a2 ("ata: libahci_platform: support non-consecutive
port numbers") modified ahci_platform_get_resources() to allow
identifying the ports of a controller that are defined as child nodes of
the controller node in order to support non-consecutive port numbers (as
defined by the platform device tree).
However, this commit also erroneously sets bit 0 of
hpriv->mask_port_map when the platform devices tree does not define port
child nodes, to match the fact that the temporary default number of
ports used in that case is 1 (which is also consistent with the fact
that only index 0 of hpriv->phys[] is initialized with the call to
ahci_platform_get_phy(). But doing so causes ahci_platform_init_host()
to initialize and probe only the first port, even if this function
determines that the controller has in fact multiple ports using the
capability register of the controller (through a call to
ahci_nr_ports()). This can be seen with the ahci_mvebu driver (Armada
385 SoC) with the second port declared as "dummy":
ahci-mvebu f10a8000.sata: masking port_map 0x3 -> 0x1
ahci-mvebu f10a8000.sata: AHCI vers 0001.0000, 32 command slots, 6 Gbps, platform mode
ahci-mvebu f10a8000.sata: 1/2 ports implemented (port mask 0x1)
ahci-mvebu f10a8000.sata: flags: 64bit ncq sntf led only pmp fbs pio slum part sxs
scsi host0: ahci-mvebu
scsi host1: ahci-mvebu
ata1: SATA max UDMA/133 mmio [mem 0xf10a8000-0xf10a9fff] port 0x100 irq 40 lpm-pol 0
ata2: DUMMY
Fix this issue by removing setting bit 0 of hpriv->mask_port_map when
the platform device tree does not define port child nodes.
Reported-by: Klaus Kudielka <klaus.kudielka@gmail.com>
Fixes: 8c87215dd3a2 ("ata: libahci_platform: support non-consecutive port numbers")
Tested-by: Klaus Kudielka <klaus.kudielka@gmail.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Acked-by: Josua Mayer <josua@solid-run.com>
Link: https://lore.kernel.org/r/20250207232915.1439174-1-dlemoal@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/ata/libahci_platform.c | 2 --
1 file changed, 2 deletions(-)
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -651,8 +651,6 @@ struct ahci_host_priv *ahci_platform_get
* If no sub-node was found, keep this for device tree
* compatibility
*/
- hpriv->mask_port_map |= BIT(0);
-
rc = ahci_platform_get_phy(hpriv, 0, dev, dev->of_node);
if (rc)
goto err_out;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 270/337] ata: ahci: Make ahci_ignore_port() handle empty mask_port_map
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (267 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 269/337] ata: libahci_platform: Do not set mask_port_map when not needed Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 271/337] of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails Greg Kroah-Hartman
` (74 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Marek Szyprowski, Damien Le Moal,
Niklas Cassel
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Niklas Cassel <cassel@kernel.org>
commit 130ff5c8b78e6fd05270a04985c50bce6a3de6c1 upstream.
Commit 8c87215dd3a2 ("ata: libahci_platform: support non-consecutive port
numbers") added a skip to ahci_platform_enable_phys() for ports that are
not in mask_port_map.
The code in ahci_platform_get_resources(), will currently set mask_port_map
for each child "port" node it finds in the device tree.
However, device trees that do not have any child "port" nodes will not have
mask_port_map set, and for non-device tree platforms mask_port_map will
only exist as a quirk for specific PCI device + vendor IDs, or as a kernel
module parameter, but will not be set by default.
Therefore, the common thing is that mask_port_map is only set if you do not
want to use all ports (as defined by Offset 0Ch: PI – Ports Implemented
register), but instead only want to use the ports in mask_port_map. If
mask_port_map is not set, all ports are available.
Thus, ahci_ignore_port() must be able to handle an empty mask_port_map.
Fixes: 8c87215dd3a2 ("ata: libahci_platform: support non-consecutive port numbers")
Fixes: 2c202e6c4f4d ("ata: libahci_platform: Do not set mask_port_map when not needed")
Fixes: c9b5be909e65 ("ahci: Introduce ahci_ignore_port() helper")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Closes: https://lore.kernel.org/linux-ide/10b31dd0-d0bb-4f76-9305-2195c3e17670@samsung.com/
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Co-developed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20250225141612.942170-2-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/ata/ahci.h | 8 ++++++--
drivers/ata/libahci.c | 1 +
2 files changed, 7 insertions(+), 2 deletions(-)
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -387,8 +387,12 @@ struct ahci_host_priv {
static inline bool ahci_ignore_port(struct ahci_host_priv *hpriv,
unsigned int portid)
{
- return portid >= hpriv->nports ||
- !(hpriv->mask_port_map & (1 << portid));
+ if (portid >= hpriv->nports)
+ return true;
+ /* mask_port_map not set means that all ports are available */
+ if (!hpriv->mask_port_map)
+ return false;
+ return !(hpriv->mask_port_map & (1 << portid));
}
extern int ahci_ignore_sss;
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -542,6 +542,7 @@ void ahci_save_initial_config(struct dev
hpriv->saved_port_map = port_map;
}
+ /* mask_port_map not set means that all ports are available */
if (hpriv->mask_port_map) {
dev_warn(dev, "masking port_map 0x%lx -> 0x%lx\n",
port_map,
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 271/337] of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (268 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 270/337] ata: ahci: Make ahci_ignore_port() handle empty mask_port_map Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 272/337] Bluetooth: ISO: fix CONNECTED -> CLOSED transition on shutdown/release Greg Kroah-Hartman
` (73 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Wandun Chen, Rob Herring (Arm)
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wandun Chen <chenwandun@lixiang.com>
commit e1686ca81dbf3edbde589b7daf312b45cbf76e03 upstream.
The global pointer 'reserved_mem' continues to reference the
reserved_mem_array which lives in __initdata if
alloc_reserved_mem_array() fails. of_reserved_mem_lookup() is
exported for post-init use, that would dereference freed memory
and trigger a use-after-free.
So reset reserved_mem_count to 0 when alloc_reserved_mem_array()
fails.
Fixes: 00c9a452a235 ("of: reserved_mem: Add code to dynamically allocate reserved_mem array")
Signed-off-by: Wandun Chen <chenwandun@lixiang.com>
Link: https://patch.msgid.link/20260604015332.3669384-1-chenwandun1@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/of/of_reserved_mem.c | 28 +++++++++++++++++++---------
1 file changed, 19 insertions(+), 9 deletions(-)
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -70,29 +70,32 @@ static int __init early_init_dt_alloc_re
* the initial static array is copied over to this new array and
* the new array is used from this point on.
*/
-static void __init alloc_reserved_mem_array(void)
+static int __init alloc_reserved_mem_array(void)
{
struct reserved_mem *new_array;
size_t alloc_size, copy_size, memset_size;
+ int ret;
+
+ if (!total_reserved_mem_cnt)
+ return 0;
alloc_size = array_size(total_reserved_mem_cnt, sizeof(*new_array));
if (alloc_size == SIZE_MAX) {
- pr_err("Failed to allocate memory for reserved_mem array with err: %d", -EOVERFLOW);
- return;
+ ret = -EOVERFLOW;
+ goto fail;
}
new_array = memblock_alloc(alloc_size, SMP_CACHE_BYTES);
if (!new_array) {
- pr_err("Failed to allocate memory for reserved_mem array with err: %d", -ENOMEM);
- return;
+ ret = -ENOMEM;
+ goto fail;
}
copy_size = array_size(reserved_mem_count, sizeof(*new_array));
if (copy_size == SIZE_MAX) {
memblock_free(new_array, alloc_size);
- total_reserved_mem_cnt = MAX_RESERVED_REGIONS;
- pr_err("Failed to allocate memory for reserved_mem array with err: %d", -EOVERFLOW);
- return;
+ ret = -EOVERFLOW;
+ goto fail;
}
memset_size = alloc_size - copy_size;
@@ -101,6 +104,12 @@ static void __init alloc_reserved_mem_ar
memset(new_array + reserved_mem_count, 0, memset_size);
reserved_mem = new_array;
+ return 0;
+
+fail:
+ pr_err("Failed to allocate memory for reserved_mem array with err: %d", ret);
+ reserved_mem_count = 0;
+ return ret;
}
static void __init fdt_init_reserved_mem_node(struct reserved_mem *rmem);
@@ -246,7 +255,8 @@ void __init fdt_scan_reserved_mem_reg_no
}
/* Attempt dynamic allocation of a new reserved_mem array */
- alloc_reserved_mem_array();
+ if (alloc_reserved_mem_array())
+ return;
if (__reserved_mem_check_root(node)) {
pr_err("Reserved memory: unsupported node format, ignoring\n");
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 272/337] Bluetooth: ISO: fix CONNECTED -> CLOSED transition on shutdown/release
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (269 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 271/337] of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 273/337] drm/xe/rtp: Refactor OAG MMIO trigger register whitelisting Greg Kroah-Hartman
` (72 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Pauli Virtanen,
Luiz Augusto von Dentz
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pauli Virtanen <pav@iki.fi>
commit 0786469ee242952008628ed0e2d386098e2065ab upstream.
Commit d57e506f6a1e ("Bluetooth: ISO: clear iso_data always when detaching conn from hcon")
merged a version of the UAF fix that breaks releasing connected
ISO sockets. Since hci_conn::iso_data is set to NULL, iso_chan_del() won't
be called when the hci_conn disconnects, and the ISO socket does not emit
POLLHUP correctly.
Fix by retaining full hci_conn <-> iso_conn association while in
BT_DISCONNECT state, so that local disconnect via shutdown() follows
similar ISO socket code path as remote disconnect. Use a separate flag
to track whether hci_conn_drop() is needed, instead of setting
iso_conn::hcon = NULL
In iso_sock_ready(), disallow disconnecting socket going BT_CONNECTED,
in case hcon connects while its drop is pending.
Fixes: d57e506f6a1e ("Bluetooth: ISO: clear iso_data always when detaching conn from hcon")
Fixes: fbdc4bc47268 ("Bluetooth: ISO: Use defer setup to separate PA sync and BIG sync")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/bluetooth/iso.c | 26 ++++++++++++++++++++------
1 file changed, 20 insertions(+), 6 deletions(-)
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -23,8 +23,14 @@ static struct bt_sock_list iso_sk_list =
};
/* ---- ISO connections ---- */
+enum {
+ ISO_CONN_DROPPED,
+ __ISO_CONN_NUM_FLAGS
+};
+
struct iso_conn {
struct hci_conn *hcon;
+ DECLARE_BITMAP(flags, __ISO_CONN_NUM_FLAGS);
/* @lock: spinlock protecting changes to iso_conn fields */
spinlock_t lock;
@@ -105,7 +111,8 @@ static void iso_conn_free(struct kref *r
if (conn->hcon) {
conn->hcon->iso_data = NULL;
- hci_conn_drop(conn->hcon);
+ if (!test_and_set_bit(ISO_CONN_DROPPED, conn->flags))
+ hci_conn_drop(conn->hcon);
}
kfree_skb(conn->rx_skb);
@@ -299,6 +306,7 @@ static int __iso_chan_add(struct iso_con
iso_pi(sk)->conn = conn;
conn->sk = sk;
+ clear_bit(ISO_CONN_DROPPED, conn->flags);
if (parent)
bt_accept_enqueue(parent, sk, true);
@@ -813,11 +821,8 @@ static void iso_sock_disconn(struct sock
}
sk->sk_state = BT_DISCONN;
- iso_conn_lock(iso_pi(sk)->conn);
- hci_conn_drop(iso_pi(sk)->conn->hcon);
- iso_pi(sk)->conn->hcon->iso_data = NULL;
- iso_pi(sk)->conn->hcon = NULL;
- iso_conn_unlock(iso_pi(sk)->conn);
+ if (!test_and_set_bit(ISO_CONN_DROPPED, iso_pi(sk)->conn->flags))
+ hci_conn_drop(iso_pi(sk)->conn->hcon);
}
static void __iso_sock_close(struct sock *sk)
@@ -1894,9 +1899,18 @@ static void iso_sock_ready(struct sock *
return;
lock_sock(sk);
+
+ switch (sk->sk_state) {
+ case BT_DISCONN:
+ case BT_CLOSED:
+ release_sock(sk);
+ return;
+ }
+
iso_sock_clear_timer(sk);
sk->sk_state = BT_CONNECTED;
sk->sk_state_change(sk);
+
release_sock(sk);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 273/337] drm/xe/rtp: Refactor OAG MMIO trigger register whitelisting
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (270 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 272/337] Bluetooth: ISO: fix CONNECTED -> CLOSED transition on shutdown/release Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 274/337] drm/xe: Introduce xe_gt_dbg_printer() Greg Kroah-Hartman
` (71 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ashutosh Dixit,
Umesh Nerlige Ramappa, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit ed455775c5a68b75e5f6ad6c8e0e3e9c98fd3f64 ]
Minor refactor of OAG MMIO trigger register whitelisting for code reuse
with OAM MMIO trigger register whitelisting.
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20251202025115.373546-5-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_reg_whitelist.c | 29 ++++++++++++---------------
1 file changed, 13 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index 3de0a867149da..d88261921ae46 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -64,27 +64,24 @@ static const struct xe_rtp_entry_sr register_whitelist[] = {
ENGINE_CLASS(RENDER)),
XE_RTP_ACTIONS(WHITELIST(CSBE_DEBUG_STATUS(RENDER_RING_BASE), 0))
},
- { XE_RTP_NAME("oa_reg_render"),
+
+#define WHITELIST_OA_MMIO_TRG(trg, status, head) \
+ WHITELIST(trg, RING_FORCE_TO_NONPRIV_ACCESS_RW), \
+ WHITELIST(status, RING_FORCE_TO_NONPRIV_ACCESS_RD), \
+ WHITELIST(head, RING_FORCE_TO_NONPRIV_ACCESS_RD | RING_FORCE_TO_NONPRIV_RANGE_4)
+
+#define WHITELIST_OAG_MMIO_TRG \
+ WHITELIST_OA_MMIO_TRG(OAG_MMIOTRIGGER, OAG_OASTATUS, OAG_OAHEADPTR)
+
+ { XE_RTP_NAME("oag_mmio_trg_rcs"),
XE_RTP_RULES(GRAPHICS_VERSION_RANGE(1200, XE_RTP_END_VERSION_UNDEFINED),
ENGINE_CLASS(RENDER)),
- XE_RTP_ACTIONS(WHITELIST(OAG_MMIOTRIGGER,
- RING_FORCE_TO_NONPRIV_ACCESS_RW),
- WHITELIST(OAG_OASTATUS,
- RING_FORCE_TO_NONPRIV_ACCESS_RD),
- WHITELIST(OAG_OAHEADPTR,
- RING_FORCE_TO_NONPRIV_ACCESS_RD |
- RING_FORCE_TO_NONPRIV_RANGE_4))
+ XE_RTP_ACTIONS(WHITELIST_OAG_MMIO_TRG)
},
- { XE_RTP_NAME("oa_reg_compute"),
+ { XE_RTP_NAME("oag_mmio_trg_ccs"),
XE_RTP_RULES(GRAPHICS_VERSION_RANGE(1200, XE_RTP_END_VERSION_UNDEFINED),
ENGINE_CLASS(COMPUTE)),
- XE_RTP_ACTIONS(WHITELIST(OAG_MMIOTRIGGER,
- RING_FORCE_TO_NONPRIV_ACCESS_RW),
- WHITELIST(OAG_OASTATUS,
- RING_FORCE_TO_NONPRIV_ACCESS_RD),
- WHITELIST(OAG_OAHEADPTR,
- RING_FORCE_TO_NONPRIV_ACCESS_RD |
- RING_FORCE_TO_NONPRIV_RANGE_4))
+ XE_RTP_ACTIONS(WHITELIST_OAG_MMIO_TRG)
},
{}
};
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 274/337] drm/xe: Introduce xe_gt_dbg_printer()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (271 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 273/337] drm/xe/rtp: Refactor OAG MMIO trigger register whitelisting Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 275/337] drm/xe: Apply whitelist to engine save-restore Greg Kroah-Hartman
` (70 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Michal Wajdeczko, Lucas De Marchi,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michal Wajdeczko <michal.wajdeczko@intel.com>
[ Upstream commit 26582fc61a923e81832df8d5a169bbdab095d15e ]
We didn't have GT-oriented debug level printer as it was hard to
correctly show actual callsite annotation. But this is now doable
from commit c2ef66e9ad88 ("drm/print: Improve drm_dbg_printer").
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241209232739.147417-3-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_gt_printk.h | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_gt_printk.h b/drivers/gpu/drm/xe/xe_gt_printk.h
index 5dc71394372d6..11da0228cea71 100644
--- a/drivers/gpu/drm/xe/xe_gt_printk.h
+++ b/drivers/gpu/drm/xe/xe_gt_printk.h
@@ -60,6 +60,21 @@ static inline void __xe_gt_printfn_info(struct drm_printer *p, struct va_format
xe_gt_info(gt, "%pV", vaf);
}
+static inline void __xe_gt_printfn_dbg(struct drm_printer *p, struct va_format *vaf)
+{
+ struct xe_gt *gt = p->arg;
+ struct drm_printer dbg;
+
+ /*
+ * The original xe_gt_dbg() callsite annotations are useless here,
+ * redirect to the tweaked drm_dbg_printer() instead.
+ */
+ dbg = drm_dbg_printer(>_to_xe(gt)->drm, DRM_UT_DRIVER, NULL);
+ dbg.origin = p->origin;
+
+ drm_printf(&dbg, "GT%u: %pV", gt->info.id, vaf);
+}
+
/**
* xe_gt_err_printer - Construct a &drm_printer that outputs to xe_gt_err()
* @gt: the &xe_gt pointer to use in xe_gt_err()
@@ -90,4 +105,20 @@ static inline struct drm_printer xe_gt_info_printer(struct xe_gt *gt)
return p;
}
+/**
+ * xe_gt_dbg_printer - Construct a &drm_printer that outputs like xe_gt_dbg()
+ * @gt: the &xe_gt pointer to use in xe_gt_dbg()
+ *
+ * Return: The &drm_printer object.
+ */
+static inline struct drm_printer xe_gt_dbg_printer(struct xe_gt *gt)
+{
+ struct drm_printer p = {
+ .printfn = __xe_gt_printfn_dbg,
+ .arg = gt,
+ .origin = (const void *)_THIS_IP_,
+ };
+ return p;
+}
+
#endif
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 275/337] drm/xe: Apply whitelist to engine save-restore
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (272 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 274/337] drm/xe: Introduce xe_gt_dbg_printer() Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 276/337] drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists Greg Kroah-Hartman
` (69 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matt Roper, Lucas De Marchi,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lucas De Marchi <lucas.demarchi@intel.com>
[ Upstream commit 3fcf68d7393fd622b96cd45124ccb1eddf77684c ]
Changes in xe_guc_ads.c in the above commit are not needed for linux-6.12.y.
Instead of handling the whitelist directly in the GuC ADS
initialization, make it follow the same logic as other engine registers
that are save-restored. Main benefit is that then the SW tracking then
shows it in debugfs and there's no risk of an engine workaround to write
to the same nopriv register that is being passed directly to GuC.
This means that xe_reg_whitelist_process_engine() only has to process
the RTP and convert them to entries for the hwe. With that all the
registers should be covered by xe_reg_sr_apply_mmio() to write to the HW
and there's no special handling in GuC ADS to also add these registers
to the list of registers that is passed to GuC.
Example for DG2:
# cat /sys/kernel/debug/dri/0000\:03\:00.0/gt0/register-save-restore
...
Engine
rcs0
...
REG[0x24d0] clr=0xffffffff set=0x1000dafc masked=no mcr=no
REG[0x24d4] clr=0xffffffff set=0x1000db01 masked=no mcr=no
REG[0x24d8] clr=0xffffffff set=0x0000db1c masked=no mcr=no
...
Whitelist
rcs0
REG[0xdafc-0xdaff]: allow read access
REG[0xdb00-0xdb1f]: allow read access
REG[0xdb1c-0xdb1f]: allow rw access
v2:
- Use ~0u for clr bits so it's just a write (Matt Roper)
- Simplify helpers now that unused slots are not written
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241209232739.147417-6-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_gt.c | 4 +-
drivers/gpu/drm/xe/xe_hw_engine.c | 1 -
drivers/gpu/drm/xe/xe_reg_sr.c | 53 ---------------------------
drivers/gpu/drm/xe/xe_reg_whitelist.c | 37 +++++++++++++++++++
4 files changed, 38 insertions(+), 57 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c
index 292947e44a8a8..e2ac1589dfbf6 100644
--- a/drivers/gpu/drm/xe/xe_gt.c
+++ b/drivers/gpu/drm/xe/xe_gt.c
@@ -722,10 +722,8 @@ static int do_gt_restart(struct xe_gt *gt)
xe_mocs_init(gt);
- for_each_hw_engine(hwe, gt, id) {
+ for_each_hw_engine(hwe, gt, id)
xe_reg_sr_apply_mmio(&hwe->reg_sr, gt);
- xe_reg_sr_apply_whitelist(hwe);
- }
/* Get CCS mode in sync between sw/hw */
xe_gt_apply_ccs_mode(gt);
diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index 45d0ae074e652..ca4c2dee276bc 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -546,7 +546,6 @@ static int hw_engine_init(struct xe_gt *gt, struct xe_hw_engine *hwe,
xe_gt_assert(gt, gt->info.engine_mask & BIT(id));
xe_reg_sr_apply_mmio(&hwe->reg_sr, gt);
- xe_reg_sr_apply_whitelist(hwe);
hwe->hwsp = xe_managed_bo_create_pin_map(xe, tile, SZ_4K,
XE_BO_FLAG_VRAM_IF_DGFX(tile) |
diff --git a/drivers/gpu/drm/xe/xe_reg_sr.c b/drivers/gpu/drm/xe/xe_reg_sr.c
index ae9e6df2f4e12..01ee54d53531b 100644
--- a/drivers/gpu/drm/xe/xe_reg_sr.c
+++ b/drivers/gpu/drm/xe/xe_reg_sr.c
@@ -24,7 +24,6 @@
#include "xe_hw_engine_types.h"
#include "xe_macros.h"
#include "xe_mmio.h"
-#include "xe_reg_whitelist.h"
#include "xe_rtp_types.h"
static void reg_sr_fini(struct drm_device *drm, void *arg)
@@ -194,58 +193,6 @@ void xe_reg_sr_apply_mmio(struct xe_reg_sr *sr, struct xe_gt *gt)
xe_gt_err(gt, "Failed to apply, err=%d\n", err);
}
-void xe_reg_sr_apply_whitelist(struct xe_hw_engine *hwe)
-{
- struct xe_reg_sr *sr = &hwe->reg_whitelist;
- struct xe_gt *gt = hwe->gt;
- struct xe_device *xe = gt_to_xe(gt);
- struct xe_reg_sr_entry *entry;
- struct drm_printer p;
- u32 mmio_base = hwe->mmio_base;
- unsigned long reg;
- unsigned int slot = 0;
- int err;
-
- if (xa_empty(&sr->xa))
- return;
-
- drm_dbg(&xe->drm, "Whitelisting %s registers\n", sr->name);
-
- err = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL);
- if (err)
- goto err_force_wake;
-
- p = drm_dbg_printer(&xe->drm, DRM_UT_DRIVER, NULL);
- xa_for_each(&sr->xa, reg, entry) {
- if (slot == RING_MAX_NONPRIV_SLOTS) {
- xe_gt_err(gt,
- "hwe %s: maximum register whitelist slots (%d) reached, refusing to add more\n",
- hwe->name, RING_MAX_NONPRIV_SLOTS);
- break;
- }
-
- xe_reg_whitelist_print_entry(&p, 0, reg, entry);
- xe_mmio_write32(gt, RING_FORCE_TO_NONPRIV(mmio_base, slot),
- reg | entry->set_bits);
- slot++;
- }
-
- /* And clear the rest just in case of garbage */
- for (; slot < RING_MAX_NONPRIV_SLOTS; slot++) {
- u32 addr = RING_NOPID(mmio_base).addr;
-
- xe_mmio_write32(gt, RING_FORCE_TO_NONPRIV(mmio_base, slot), addr);
- }
-
- err = xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL);
- XE_WARN_ON(err);
-
- return;
-
-err_force_wake:
- drm_err(&xe->drm, "Failed to apply, err=%d\n", err);
-}
-
/**
* xe_reg_sr_dump - print all save/restore entries
* @sr: Save/restore entries
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index d88261921ae46..ef1bb1b47af09 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -10,7 +10,9 @@
#include "regs/xe_oa_regs.h"
#include "regs/xe_regs.h"
#include "xe_gt_types.h"
+#include "xe_gt_printk.h"
#include "xe_platform_types.h"
+#include "xe_reg_sr.h"
#include "xe_rtp.h"
#include "xe_step.h"
@@ -86,6 +88,40 @@ static const struct xe_rtp_entry_sr register_whitelist[] = {
{}
};
+static void whitelist_apply_to_hwe(struct xe_hw_engine *hwe)
+{
+ struct xe_reg_sr *sr = &hwe->reg_whitelist;
+ struct xe_reg_sr_entry *entry;
+ struct drm_printer p;
+ unsigned long reg;
+ unsigned int slot;
+
+ xe_gt_dbg(hwe->gt, "Add %s whitelist to engine\n", sr->name);
+ p = xe_gt_dbg_printer(hwe->gt);
+
+ slot = 0;
+ xa_for_each(&sr->xa, reg, entry) {
+ struct xe_reg_sr_entry hwe_entry = {
+ .reg = RING_FORCE_TO_NONPRIV(hwe->mmio_base, slot),
+ .set_bits = entry->reg.addr | entry->set_bits,
+ .clr_bits = ~0u,
+ .read_mask = entry->read_mask,
+ };
+
+ if (slot == RING_MAX_NONPRIV_SLOTS) {
+ xe_gt_err(hwe->gt,
+ "hwe %s: maximum register whitelist slots (%d) reached, refusing to add more\n",
+ hwe->name, RING_MAX_NONPRIV_SLOTS);
+ break;
+ }
+
+ xe_reg_whitelist_print_entry(&p, 0, reg, entry);
+ xe_reg_sr_add(&hwe->reg_sr, &hwe_entry, hwe->gt);
+
+ slot++;
+ }
+}
+
/**
* xe_reg_whitelist_process_engine - process table of registers to whitelist
* @hwe: engine instance to process whitelist for
@@ -99,6 +135,7 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe)
struct xe_rtp_process_ctx ctx = XE_RTP_PROCESS_CTX_INITIALIZER(hwe);
xe_rtp_process_to_sr(&ctx, register_whitelist, &hwe->reg_whitelist);
+ whitelist_apply_to_hwe(hwe);
}
/**
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 276/337] drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (273 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 275/337] drm/xe: Apply whitelist to engine save-restore Greg Kroah-Hartman
@ 2026-08-07 14:37 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 277/337] drm/xe/rtp: Maintain OA whitelists separately Greg Kroah-Hartman
` (68 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:37 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Umesh Nerlige Ramappa,
Ashutosh Dixit, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit e70086a3a06d276b4a5d9a2c51c9330c6cf72780 ]
Unconditionally whitelisting OA registers is a security violation. Set
RING_FORCE_TO_NONPRIV_DENY bit in OA nonpriv slots, so that OA registers
don't get whitelisted by default after probe, gt reset, resume and engine
reset.
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Suggested-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-2-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_reg_whitelist.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index ef1bb1b47af09..d75bc87cb3cb1 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -67,10 +67,12 @@ static const struct xe_rtp_entry_sr register_whitelist[] = {
XE_RTP_ACTIONS(WHITELIST(CSBE_DEBUG_STATUS(RENDER_RING_BASE), 0))
},
+#define WHITELIST_DENY(r, f) WHITELIST(r, (f) | RING_FORCE_TO_NONPRIV_DENY)
+
#define WHITELIST_OA_MMIO_TRG(trg, status, head) \
- WHITELIST(trg, RING_FORCE_TO_NONPRIV_ACCESS_RW), \
- WHITELIST(status, RING_FORCE_TO_NONPRIV_ACCESS_RD), \
- WHITELIST(head, RING_FORCE_TO_NONPRIV_ACCESS_RD | RING_FORCE_TO_NONPRIV_RANGE_4)
+ WHITELIST_DENY(trg, RING_FORCE_TO_NONPRIV_ACCESS_RW), \
+ WHITELIST_DENY(status, RING_FORCE_TO_NONPRIV_ACCESS_RD), \
+ WHITELIST_DENY(head, RING_FORCE_TO_NONPRIV_ACCESS_RD | RING_FORCE_TO_NONPRIV_RANGE_4)
#define WHITELIST_OAG_MMIO_TRG \
WHITELIST_OA_MMIO_TRG(OAG_MMIOTRIGGER, OAG_OASTATUS, OAG_OAHEADPTR)
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 277/337] drm/xe/rtp: Maintain OA whitelists separately
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (274 preceding siblings ...)
2026-08-07 14:37 ` [PATCH 6.12 276/337] drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 278/337] drm/xe/rtp: Keep track of non-OA nonpriv slots Greg Kroah-Hartman
` (67 subsequent siblings)
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From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ashutosh Dixit,
Umesh Nerlige Ramappa, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit 31e2437561621b4867c08efc890bf629d017df03 ]
Contains minor modification of the above commit because of changed API.
OA registers are dynamically whitelisted (and again dewhitelisted) on OA
stream open/close. Maintaining OA whitelists separately from non-OA
register whitlists simplifies this management of OA register
whitelisting/dewhitelisting.
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-3-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_gt_debugfs.c | 4 +++-
drivers/gpu/drm/xe/xe_hw_engine.c | 2 ++
drivers/gpu/drm/xe/xe_hw_engine_types.h | 8 ++++++++
drivers/gpu/drm/xe/xe_reg_whitelist.c | 6 ++++++
4 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/xe/xe_gt_debugfs.c b/drivers/gpu/drm/xe/xe_gt_debugfs.c
index 8f95d3a5949bc..15ff52dfe461b 100644
--- a/drivers/gpu/drm/xe/xe_gt_debugfs.c
+++ b/drivers/gpu/drm/xe/xe_gt_debugfs.c
@@ -191,8 +191,10 @@ static int register_save_restore(struct xe_gt *gt, struct drm_printer *p)
drm_printf(p, "\n");
drm_printf(p, "Whitelist\n");
- for_each_hw_engine(hwe, gt, id)
+ for_each_hw_engine(hwe, gt, id) {
xe_reg_whitelist_dump(&hwe->reg_whitelist, p);
+ xe_reg_whitelist_dump(&hwe->oa_whitelist, p);
+ }
xe_pm_runtime_put(gt_to_xe(gt));
diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index ca4c2dee276bc..9f560ac9e2b8a 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -532,6 +532,8 @@ static void hw_engine_init_early(struct xe_gt *gt, struct xe_hw_engine *hwe,
hw_engine_setup_default_state(hwe);
xe_reg_sr_init(&hwe->reg_whitelist, hwe->name, gt_to_xe(gt));
+ xe_reg_sr_init(&hwe->oa_whitelist, hwe->name, gt_to_xe(gt));
+ xe_reg_sr_init(&hwe->oa_sr, hwe->name, gt_to_xe(gt));
xe_reg_whitelist_process_engine(hwe);
}
diff --git a/drivers/gpu/drm/xe/xe_hw_engine_types.h b/drivers/gpu/drm/xe/xe_hw_engine_types.h
index 8be6d420ece40..ac876a8c3eec3 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine_types.h
+++ b/drivers/gpu/drm/xe/xe_hw_engine_types.h
@@ -128,6 +128,14 @@ struct xe_hw_engine {
* @reg_whitelist: table with registers to be whitelisted
*/
struct xe_reg_sr reg_whitelist;
+ /**
+ * @oa_whitelist: oa registers to be whitelisted
+ */
+ struct xe_reg_sr oa_whitelist;
+ /**
+ * @oa_sr: oa nonpriv whitelist registers, changed on oa stream open/close
+ */
+ struct xe_reg_sr oa_sr;
/**
* @reg_lrc: LRC workaround registers
*/
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index d75bc87cb3cb1..d82b14f8d0716 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -66,6 +66,10 @@ static const struct xe_rtp_entry_sr register_whitelist[] = {
ENGINE_CLASS(RENDER)),
XE_RTP_ACTIONS(WHITELIST(CSBE_DEBUG_STATUS(RENDER_RING_BASE), 0))
},
+ {}
+};
+
+static const struct xe_rtp_entry_sr oa_whitelist[] = {
#define WHITELIST_DENY(r, f) WHITELIST(r, (f) | RING_FORCE_TO_NONPRIV_DENY)
@@ -138,6 +142,8 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe)
xe_rtp_process_to_sr(&ctx, register_whitelist, &hwe->reg_whitelist);
whitelist_apply_to_hwe(hwe);
+
+ xe_rtp_process_to_sr(&ctx, oa_whitelist, &hwe->oa_whitelist);
}
/**
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 278/337] drm/xe/rtp: Keep track of non-OA nonpriv slots
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (275 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 277/337] drm/xe/rtp: Maintain OA whitelists separately Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 279/337] drm/xe/rtp: Generalize whitelist_apply_to_hwe Greg Kroah-Hartman
` (66 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ashutosh Dixit,
Umesh Nerlige Ramappa, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit 60d49ea28bb190a640bd8dc3f4c946e0811a948c ]
In order to dynamically whitelist/dewhitelist OA registers on OA stream
open/close, we need to keep track of nonpriv slots occupied by non-OA
register whitelists.
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-4-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_reg_whitelist.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index d82b14f8d0716..12d12d8f0e99c 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -94,7 +94,7 @@ static const struct xe_rtp_entry_sr oa_whitelist[] = {
{}
};
-static void whitelist_apply_to_hwe(struct xe_hw_engine *hwe)
+static int whitelist_apply_to_hwe(struct xe_hw_engine *hwe)
{
struct xe_reg_sr *sr = &hwe->reg_whitelist;
struct xe_reg_sr_entry *entry;
@@ -126,6 +126,8 @@ static void whitelist_apply_to_hwe(struct xe_hw_engine *hwe)
slot++;
}
+
+ return slot;
}
/**
@@ -139,9 +141,10 @@ static void whitelist_apply_to_hwe(struct xe_hw_engine *hwe)
void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe)
{
struct xe_rtp_process_ctx ctx = XE_RTP_PROCESS_CTX_INITIALIZER(hwe);
+ int first_oa_slot;
xe_rtp_process_to_sr(&ctx, register_whitelist, &hwe->reg_whitelist);
- whitelist_apply_to_hwe(hwe);
+ first_oa_slot = whitelist_apply_to_hwe(hwe);
xe_rtp_process_to_sr(&ctx, oa_whitelist, &hwe->oa_whitelist);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 279/337] drm/xe/rtp: Generalize whitelist_apply_to_hwe
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (276 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 278/337] drm/xe/rtp: Keep track of non-OA nonpriv slots Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 280/337] drm/xe/rtp: Save OA nonpriv registers to register save/restore lists Greg Kroah-Hartman
` (65 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ashutosh Dixit,
Umesh Nerlige Ramappa, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit 4fe2844b0f0c7cdc45ca4c4c62ca56b7f26c514c ]
Generalize whitelist_apply_to_hwe to construct both non-OA and OA
whitelist nonpriv registers.
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-5-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_reg_whitelist.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index 12d12d8f0e99c..47beb473f6a29 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -94,9 +94,10 @@ static const struct xe_rtp_entry_sr oa_whitelist[] = {
{}
};
-static int whitelist_apply_to_hwe(struct xe_hw_engine *hwe)
+static int whitelist_apply_to_hwe(struct xe_hw_engine *hwe, struct xe_reg_sr *in,
+ struct xe_reg_sr *out, int first_slot)
{
- struct xe_reg_sr *sr = &hwe->reg_whitelist;
+ struct xe_reg_sr *sr = in;
struct xe_reg_sr_entry *entry;
struct drm_printer p;
unsigned long reg;
@@ -105,7 +106,7 @@ static int whitelist_apply_to_hwe(struct xe_hw_engine *hwe)
xe_gt_dbg(hwe->gt, "Add %s whitelist to engine\n", sr->name);
p = xe_gt_dbg_printer(hwe->gt);
- slot = 0;
+ slot = first_slot;
xa_for_each(&sr->xa, reg, entry) {
struct xe_reg_sr_entry hwe_entry = {
.reg = RING_FORCE_TO_NONPRIV(hwe->mmio_base, slot),
@@ -122,7 +123,7 @@ static int whitelist_apply_to_hwe(struct xe_hw_engine *hwe)
}
xe_reg_whitelist_print_entry(&p, 0, reg, entry);
- xe_reg_sr_add(&hwe->reg_sr, &hwe_entry, hwe->gt);
+ xe_reg_sr_add(out, &hwe_entry, hwe->gt);
slot++;
}
@@ -144,7 +145,7 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe)
int first_oa_slot;
xe_rtp_process_to_sr(&ctx, register_whitelist, &hwe->reg_whitelist);
- first_oa_slot = whitelist_apply_to_hwe(hwe);
+ first_oa_slot = whitelist_apply_to_hwe(hwe, &hwe->reg_whitelist, &hwe->reg_sr, 0);
xe_rtp_process_to_sr(&ctx, oa_whitelist, &hwe->oa_whitelist);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 280/337] drm/xe/rtp: Save OA nonpriv registers to register save/restore lists
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (277 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 279/337] drm/xe/rtp: Generalize whitelist_apply_to_hwe Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 281/337] drm/xe/rtp: Toggle deny bit to (de-)whitelist OA regs Greg Kroah-Hartman
` (64 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ashutosh Dixit,
Umesh Nerlige Ramappa, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit a19a83721a28ccaddace846da70da5c53d7dd052 ]
Now we can save OA whitelisting nonpriv registers to register save/restore
lists. OA nonpriv registers are saved to both hwe->oa_sr as well as
hwe->reg_sr.
During probe, resume and gt-reset flows KMD will apply hwe->reg_sr,
ensuring OA registers are de-whitelisted after these events. For
engine-reset, hwe->reg_sr is registered with GuC and GuC will apply these
registers, ensuring OA registers are de-whitelisted after engine resets.
hwe->oa_sr is used for whitelisting or de-whitelisting OA registers during
OA operation, by toggling the 'deny' bit on oa stream open/close.
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-6-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_reg_whitelist.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index 47beb473f6a29..a3a45f470faa1 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -148,6 +148,18 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe)
first_oa_slot = whitelist_apply_to_hwe(hwe, &hwe->reg_whitelist, &hwe->reg_sr, 0);
xe_rtp_process_to_sr(&ctx, oa_whitelist, &hwe->oa_whitelist);
+
+ /*
+ * Save oa nonpriv registers to hwe->oa_sr, from which oa registers are whitelisted
+ * or de-whitelisted, by toggling the 'deny' bit on oa stream open/close
+ */
+ whitelist_apply_to_hwe(hwe, &hwe->oa_whitelist, &hwe->oa_sr, first_oa_slot);
+
+ /*
+ * Also save oa nonpriv registers to hwe->reg_sr, to ensure oa registers are not
+ * whitelisted by default after probe, gt reset, resume and engine reset
+ */
+ whitelist_apply_to_hwe(hwe, &hwe->oa_whitelist, &hwe->reg_sr, first_oa_slot);
}
/**
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 281/337] drm/xe/rtp: Toggle deny bit to (de-)whitelist OA regs
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (278 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 280/337] drm/xe/rtp: Save OA nonpriv registers to register save/restore lists Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 282/337] drm/xe/rtp: (De-)whitelist OA registers for all hwes for a gt Greg Kroah-Hartman
` (63 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ashutosh Dixit,
Umesh Nerlige Ramappa, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit b422babd77fac2c96b92db484050e460899bddaf ]
Whitelist or de-whitelist OA registers by setting or resetting the 'deny'
bit in OA nonpriv registers and writing new register values to HW.
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-7-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_reg_whitelist.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index a3a45f470faa1..39f577a0cac71 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -162,6 +162,21 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe)
whitelist_apply_to_hwe(hwe, &hwe->oa_whitelist, &hwe->reg_sr, first_oa_slot);
}
+__maybe_unused static void __whitelist_oa_regs(struct xe_hw_engine *hwe, bool whitelist)
+{
+ struct xe_reg_sr_entry *entry;
+ unsigned long reg;
+
+ xa_for_each(&hwe->oa_sr.xa, reg, entry) {
+ if (whitelist)
+ entry->set_bits &= ~RING_FORCE_TO_NONPRIV_DENY;
+ else
+ entry->set_bits |= RING_FORCE_TO_NONPRIV_DENY;
+ }
+
+ xe_reg_sr_apply_mmio(&hwe->oa_sr, hwe->gt);
+}
+
/**
* xe_reg_whitelist_print_entry - print one whitelist entry
* @p: DRM printer
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 282/337] drm/xe/rtp: (De-)whitelist OA registers for all hwes for a gt
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (279 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 281/337] drm/xe/rtp: Toggle deny bit to (de-)whitelist OA regs Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 283/337] drm/xe/oa: (De-)whitelist OA registers on OA stream open/release Greg Kroah-Hartman
` (62 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ashutosh Dixit,
Umesh Nerlige Ramappa, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit ebba7ce65252a4ab0e3794ff14854df2afca5c08 ]
Whitelist or de-whitelist OA registers for all hwe's on the gt on which the
OA stream is opened. This simplifies the case where an oa unit has 0
attached hwe's (but which monitors OA events on the associated GT).
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-8-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_reg_whitelist.c | 34 +++++++++++++++++++++++++--
drivers/gpu/drm/xe/xe_reg_whitelist.h | 4 ++++
2 files changed, 36 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index 39f577a0cac71..8a1c3f3c82973 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -9,7 +9,7 @@
#include "regs/xe_gt_regs.h"
#include "regs/xe_oa_regs.h"
#include "regs/xe_regs.h"
-#include "xe_gt_types.h"
+#include "xe_gt.h"
#include "xe_gt_printk.h"
#include "xe_platform_types.h"
#include "xe_reg_sr.h"
@@ -162,7 +162,7 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe)
whitelist_apply_to_hwe(hwe, &hwe->oa_whitelist, &hwe->reg_sr, first_oa_slot);
}
-__maybe_unused static void __whitelist_oa_regs(struct xe_hw_engine *hwe, bool whitelist)
+static void __whitelist_oa_regs(struct xe_hw_engine *hwe, bool whitelist)
{
struct xe_reg_sr_entry *entry;
unsigned long reg;
@@ -177,6 +177,36 @@ __maybe_unused static void __whitelist_oa_regs(struct xe_hw_engine *hwe, bool wh
xe_reg_sr_apply_mmio(&hwe->oa_sr, hwe->gt);
}
+/**
+ * xe_reg_whitelist_oa_regs - whitelist oa registers for gt
+ * @gt: gt to whitelist oa registers for
+ *
+ * Whitelist OA registers by resetting RING_FORCE_TO_NONPRIV_DENY
+ */
+void xe_reg_whitelist_oa_regs(struct xe_gt *gt)
+{
+ struct xe_hw_engine *hwe;
+ enum xe_hw_engine_id id;
+
+ for_each_hw_engine(hwe, gt, id)
+ __whitelist_oa_regs(hwe, true);
+}
+
+/**
+ * xe_reg_dewhitelist_oa_regs - dewhitelist oa registers for gt
+ * @gt: gt to dewhitelist oa registers for
+ *
+ * Dewhitelist OA registers by setting RING_FORCE_TO_NONPRIV_DENY
+ */
+void xe_reg_dewhitelist_oa_regs(struct xe_gt *gt)
+{
+ struct xe_hw_engine *hwe;
+ enum xe_hw_engine_id id;
+
+ for_each_hw_engine(hwe, gt, id)
+ __whitelist_oa_regs(hwe, false);
+}
+
/**
* xe_reg_whitelist_print_entry - print one whitelist entry
* @p: DRM printer
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.h b/drivers/gpu/drm/xe/xe_reg_whitelist.h
index 69b121d377da0..f243b6ac60b7e 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.h
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.h
@@ -9,12 +9,16 @@
#include <linux/types.h>
struct drm_printer;
+struct xe_gt;
struct xe_hw_engine;
struct xe_reg_sr;
struct xe_reg_sr_entry;
void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe);
+void xe_reg_whitelist_oa_regs(struct xe_gt *gt);
+void xe_reg_dewhitelist_oa_regs(struct xe_gt *gt);
+
void xe_reg_whitelist_print_entry(struct drm_printer *p, unsigned int indent,
u32 reg, struct xe_reg_sr_entry *entry);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 283/337] drm/xe/oa: (De-)whitelist OA registers on OA stream open/release
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (280 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 282/337] drm/xe/rtp: (De-)whitelist OA registers for all hwes for a gt Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 284/337] drm/xe/rtp: Ensure locking/ref counting for OA whitelists Greg Kroah-Hartman
` (61 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ashutosh Dixit,
Umesh Nerlige Ramappa, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit 63ddb3ad08ff4e89c108499dfec5e9be5ddc25c9 ]
Whitelist OA registers on stream open and de-whitelist on stream
close/release. Whitelisting is only done when 'stream->sample' is
true. 'stream->sample' is only true when (a) xe_observation_paranoid is set
to false by system admin, or (b) the process is perfmon_capable(). This
therefore enforces the OA register whitelisting security requirements.
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-9-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_oa.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_oa.c b/drivers/gpu/drm/xe/xe_oa.c
index 5e38afc46e20e..476d887749a9b 100644
--- a/drivers/gpu/drm/xe/xe_oa.c
+++ b/drivers/gpu/drm/xe/xe_oa.c
@@ -34,6 +34,7 @@
#include "xe_oa.h"
#include "xe_observation.h"
#include "xe_pm.h"
+#include "xe_reg_whitelist.h"
#include "xe_sched_job.h"
#include "xe_sriov.h"
#include "xe_sync.h"
@@ -836,6 +837,9 @@ static void xe_oa_stream_destroy(struct xe_oa_stream *stream)
mutex_destroy(&stream->stream_lock);
+ if (stream->sample)
+ xe_reg_dewhitelist_oa_regs(stream->gt);
+
xe_oa_disable_metric_set(stream);
xe_exec_queue_put(stream->k_exec_q);
@@ -1868,6 +1872,9 @@ static int xe_oa_stream_open_ioctl_locked(struct xe_oa *oa,
goto err_disable;
}
+ if (stream->sample)
+ xe_reg_whitelist_oa_regs(stream->gt);
+
/* Hold a reference on the drm device till stream_fd is released */
drm_dev_get(&stream->oa->xe->drm);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 284/337] drm/xe/rtp: Ensure locking/ref counting for OA whitelists
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (281 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 283/337] drm/xe/oa: (De-)whitelist OA registers on OA stream open/release Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 285/337] mm/hugetlb: fix swap entry corruption when clearing uffd-wp at fork() Greg Kroah-Hartman
` (60 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ashutosh Dixit,
Umesh Nerlige Ramappa, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ashutosh Dixit <ashutosh.dixit@intel.com>
[ Upstream commit ef78e2a22f72c892fd6663f0760abd208d49a3e2 ]
Since multiple OA streams might be open in parallel on a gt, ensure that
proper locking is in place. Also ensure that OA registers are whitelisted
when the first OA stream is open and de-whitelisted after the last OA
stream is closed.
Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: stable@vger.kernel.org # v6.12+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://patch.msgid.link/20260615224227.34880-10-ashutosh.dixit@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/xe/xe_oa_types.h | 3 +++
drivers/gpu/drm/xe/xe_reg_whitelist.c | 10 ++++++++++
2 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_oa_types.h b/drivers/gpu/drm/xe/xe_oa_types.h
index fea9d981e414f..0faec73954b70 100644
--- a/drivers/gpu/drm/xe/xe_oa_types.h
+++ b/drivers/gpu/drm/xe/xe_oa_types.h
@@ -120,6 +120,9 @@ struct xe_oa_gt {
/** @oa_unit: array of oa_units */
struct xe_oa_unit *oa_unit;
+
+ /** @whitelist_count: number of open streams for which oa registers are whitelisted */
+ u32 whitelist_count;
};
/**
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index 8a1c3f3c82973..4b70460d6e002 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -9,6 +9,7 @@
#include "regs/xe_gt_regs.h"
#include "regs/xe_oa_regs.h"
#include "regs/xe_regs.h"
+#include "xe_assert.h"
#include "xe_gt.h"
#include "xe_gt_printk.h"
#include "xe_platform_types.h"
@@ -188,6 +189,10 @@ void xe_reg_whitelist_oa_regs(struct xe_gt *gt)
struct xe_hw_engine *hwe;
enum xe_hw_engine_id id;
+ lockdep_assert_held(>->oa.gt_lock);
+ if (gt->oa.whitelist_count++)
+ return;
+
for_each_hw_engine(hwe, gt, id)
__whitelist_oa_regs(hwe, true);
}
@@ -203,6 +208,11 @@ void xe_reg_dewhitelist_oa_regs(struct xe_gt *gt)
struct xe_hw_engine *hwe;
enum xe_hw_engine_id id;
+ lockdep_assert_held(>->oa.gt_lock);
+ xe_assert(gt_to_xe(gt), gt->oa.whitelist_count);
+ if (--gt->oa.whitelist_count)
+ return;
+
for_each_hw_engine(hwe, gt, id)
__whitelist_oa_regs(hwe, false);
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 285/337] mm/hugetlb: fix swap entry corruption when clearing uffd-wp at fork()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (282 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 284/337] drm/xe/rtp: Ensure locking/ref counting for OA whitelists Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 286/337] fs/proc/task_mmu: fix PAGEMAP_SCAN written state for unpopulated ptes Greg Kroah-Hartman
` (59 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kiryl Shutsemau, Sashiko AI review,
David Hildenbrand, Muchun Song, Oscar Salvador, Peter Xu,
Andrew Morton, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kiryl Shutsemau (Meta) <kas@kernel.org>
[ Upstream commit 83abe2fd5b3aeb3123b5408a5a91709c5538fb23 ]
copy_hugetlb_page_range() clears the uffd-wp bit of migration and hwpoison
entries with huge_pte_clear_uffd_wp(), which operates on the present-PTE
bit position. Swap entries keep the uffd-wp state elsewhere -- the
migration branch reads and sets it with pte_swp_uffd_wp() and
pte_swp_mkuffd_wp() -- and the present-PTE position falls into the swap
payload. On x86-64 it lands in the inverted swap offset, where a
naturally-aligned hugetlb PFN always has the affected bit set, so the
clear advances the encoded PFN by two pages.
No userfaultfd needs to be involved: the clear is guarded only by the
child VMA not being uffd-wp registered, so a plain fork() with an
in-flight hugetlb migration entry (or a poisoned hugetlb page) corrupts
the entry copied into the child. Instrumenting the clear and forking
after MADV_HWPOISON on a 2MB anon hugetlb page shows:
offset before=120e00
offset after =120e02
The fallout is mostly latent: rmap walks match migration entries by folio
range and remove_migration_pte() rebuilds the PTE from the folio, so a
within-folio PFN skew heals once migration completes. But any path that
re-encodes the corrupted offset -- e.g. hugetlb_change_protection()
rewriting a writable migration entry via
make_readable_migration_entry(swp_offset(entry)) -- propagates it.
Migration entries legitimately carry uffd-wp, so clear it with
pte_swp_clear_uffd_wp(), matching copy_nonpresent_pte() and
move_huge_pte().
A hwpoison entry, on the other hand, never carries the uffd-wp bit: it is
installed fresh by make_hwpoison_entry() (try_to_unmap_one() does not
preserve uffd-wp on the hwpoison path) and hugetlb_change_protection()
leaves hwpoison entries untouched. There was nothing to clear there, only
the corruption, so drop the clear entirely.
Link: https://lore.kernel.org/20260708090110.136162-1-kirill@shutemov.name
Fixes: bc70fbf269fd ("mm/hugetlb: handle uffd-wp during fork()")
Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
Reported-by: Sashiko AI review <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260703140011.99E601F000E9@smtp.kernel.org/
Suggested-by: David Hildenbrand <david@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Assisted-by: Claude:claude-fable-5
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 83abe2fd5b3aeb3123b5408a5a91709c5538fb23)
[ kas: adapt to the pre-softleaf idiom ]
Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
mm/hugetlb.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 2fb6e45a1ea0d..e910ed0c43d0b 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5281,8 +5281,12 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
*/
;
} else if (unlikely(is_hugetlb_entry_hwpoisoned(entry))) {
- if (!userfaultfd_wp(dst_vma))
- entry = huge_pte_clear_uffd_wp(entry);
+ /*
+ * A hwpoison entry never carries the uffd-wp bit: it is
+ * installed fresh by make_hwpoison_entry() and
+ * hugetlb_change_protection() leaves it untouched, so
+ * there is nothing to clear for the child.
+ */
set_huge_pte_at(dst, addr, dst_pte, entry, sz);
} else if (unlikely(is_hugetlb_entry_migration(entry))) {
swp_entry_t swp_entry = pte_to_swp_entry(entry);
@@ -5301,7 +5305,7 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
set_huge_pte_at(src, addr, src_pte, entry, sz);
}
if (!userfaultfd_wp(dst_vma))
- entry = huge_pte_clear_uffd_wp(entry);
+ entry = pte_swp_clear_uffd_wp(entry);
set_huge_pte_at(dst, addr, dst_pte, entry, sz);
} else if (unlikely(is_pte_marker(entry))) {
pte_marker marker = copy_pte_marker(
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 286/337] fs/proc/task_mmu: fix PAGEMAP_SCAN written state for unpopulated ptes
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (283 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 285/337] mm/hugetlb: fix swap entry corruption when clearing uffd-wp at fork() Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 287/337] mm/huge_memory: unlock i_mmap_rwsem before releasing after-split folios Greg Kroah-Hartman
` (58 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kiryl Shutsemau,
Muhammad Usama Anjum, David Hildenbrand, Jann Horn,
Liam R. Howlett, Lorenzo Stoakes, Michal Hocko, Mike Rapoport,
Pedro Falcato, Peter Xu, Shuah Khan, Suren Baghdasaryan,
Vlastimil Babka, Andrew Morton, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kiryl Shutsemau (Meta) <kas@kernel.org>
[ Upstream commit 07b4377bdbe74a3ec0c8da5849d014f70e003384 ]
PAGEMAP_SCAN reports an unpopulated pte differently depending on which
path serves the request. The PAGE_IS_WRITTEN fast path in
pagemap_scan_pmd_entry() reports a pte_none as written (and, under
PM_SCAN_WP_MATCHING, arms a marker); pagemap_page_category() returns 0 for
the same pte_none. A request that cannot take the fast path (an extra
category bit, category_anyof_mask or category_inverted) therefore reports
the pte as clean and skips arming it.
A range that was populated and then MADV_DONTNEED'd reads as written via
one mask and clean via another, and in the latter case is not re-armed for
the next round -- an incremental-dump consumer (e.g. CRIU) using a richer
mask drops the zapped range and stops tracking writes to it.
Report pte_none as written in pagemap_page_category() too. A pte_none
carries no uffd-wp marker, i.e. it is not write-protected -- the same
condition under which the present and swap cases already report
PAGE_IS_WRITTEN. The fast path applies no VMA test, so neither does this.
The hugetlb and fully-unpopulated-PMD (no page table) scans have no
PAGE_IS_WRITTEN fast path, so they do not exhibit the per-entry divergence
and are left unchanged.
Add a pagemap_ioctl selftest that populates a range, drops it with
MADV_DONTNEED, and checks that the fast path and the generic
(category_anyof_mask) path both report every page written.
Link: https://lore.kernel.org/20260707151349.92143-1-kirill@shutemov.name
Fixes: 12f6b01a0bcb ("fs/proc/task_mmu: add fast paths to get/clear PAGE_IS_WRITTEN flag")
Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Peter Xu <peterx@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Assisted-by: Claude:claude-fable-5
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 07b4377bdbe74a3ec0c8da5849d014f70e003384)
[ kas: fix only; selftest hunk dropped (pagemap_ioctl.c differs on this tree) ]
Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/proc/task_mmu.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index a521f0faa0a49..44dc442b4f0e7 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -2097,6 +2097,19 @@ static unsigned long pagemap_page_category(struct pagemap_scan_private *p,
{
unsigned long categories = 0;
+ if (pte_none(pte)) {
+ /*
+ * An unpopulated pte carries no uffd-wp marker, i.e. it is not
+ * write-protected, the same condition under which the present
+ * and swap cases below report PAGE_IS_WRITTEN. Report it here
+ * too so this generic path agrees with the PAGE_IS_WRITTEN fast
+ * path in pagemap_scan_pmd_entry(), which reports pte_none as
+ * written and, under PM_SCAN_WP_MATCHING, arms a marker. The
+ * fast path applies no VMA test, so neither does this.
+ */
+ return PAGE_IS_WRITTEN;
+ }
+
if (pte_present(pte)) {
struct page *page;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 287/337] mm/huge_memory: unlock i_mmap_rwsem before releasing after-split folios
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (284 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 286/337] fs/proc/task_mmu: fix PAGEMAP_SCAN written state for unpopulated ptes Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 288/337] lib/alloc_tag: introduce mem_alloc_profiling_permanently_disabled() Greg Kroah-Hartman
` (57 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Kiryl Shutsemau (Meta), Hao Zhang,
David Hildenbrand (Arm), Zi Yan, Baolin Wang, Miaohe Lin,
Barry Song, Dev Jain, Lance Yang, Liam R. Howlett,
Lorenzo Stoakes, Naoya Horiguchi, Nico Pache, Ryan Roberts,
Andrew Morton, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kiryl Shutsemau (Meta) <kas@kernel.org>
[ Upstream commit e923bd21058ea02fd0dcd3549d151d143fd036e5 ]
__folio_split() keeps dereferencing the mapping after the split:
shmem_uncharge(mapping->host) and remap_page() while the folios are still
frozen/locked, and i_mmap_unlock_read(mapping) at the very end, after the
after-split folios have been unlocked and freed.
Nothing holds an inode reference across that. The split relies on @folio
-- which the beyond-EOF drop loop never removes, as it starts at
folio_next(folio) -- staying locked and in the page cache to hold off
eviction. But the unlock loop unlocks @folio before i_mmap_unlock_read()
runs. If the caller's @lock_at is a tail beyond EOF, as memory_failure()
passes when splitting a poisoned tail of a shmem THP that reaches past
i_size during truncation, it too is gone from the page cache; so once
@folio is unlocked no locked, in-cache folio pins the inode, and a
concurrent final iput() can evict and RCU-free it before
i_mmap_unlock_read() touches i_mmap_rwsem:
BUG: KASAN: slab-use-after-free in __up_read+0x634/0x790
i_mmap_unlock_read include/linux/fs.h:537 [inline]
__folio_split+0x732/0x1640 mm/huge_memory.c:4100
try_to_split_thp_page+0xab/0x390 mm/memory-failure.c:1675
memory_failure+0x1394/0x26e0 mm/memory-failure.c:2470
Freed by task 4601:
shmem_free_in_core_inode+0x54/0xb0 mm/shmem.c:5177
evict+0x57f/0xac0 fs/inode.c:870
Do every mapping dereference while @folio still pins the inode: drop
i_mmap_rwsem right after remap_page(), before the loop that unlocks and
frees the after-split folios, and clear @mapping so the exit path does not
unlock it again. shmem_uncharge() and remap_page() already run before
that point, so after this nothing past the unlock loop touches the inode
or the mapping.
This is now a rule the split depends on, alongside keeping @folio frozen
until the page cache is updated: no inode or mapping dereference once the
after-split folios start being unlocked.
Link: https://lore.kernel.org/20260716095424.471052-1-kirill@shutemov.name
Fixes: baa355fd3314 ("thp: file pages support for split_huge_page()")
Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Reported-by: Hao Zhang <zhanghao1@kylinos.cn>
Closes: https://lore.kernel.org/linux-mm/20260710071344.GA106129@zh-pc
Co-developed-by: Hao Zhang <zhanghao1@kylinos.cn>
Signed-off-by: Hao Zhang <zhanghao1@kylinos.cn>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit e923bd21058ea02fd0dcd3549d151d143fd036e5)
[ kas: adapt to the __split_huge_page()/split_huge_page_to_list_to_order()
two-function split: pass @mapping into __split_huge_page() and drop it
there, before the loop that frees the after-split subpages while the
head is still locked; the caller then skips its own i_mmap unlock ]
Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
mm/huge_memory.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e60c21b924644..b2daa1767d900 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -3206,7 +3206,7 @@ static void __split_huge_page_tail(struct folio *folio, int tail,
}
static void __split_huge_page(struct page *page, struct list_head *list,
- pgoff_t end, unsigned int new_order)
+ pgoff_t end, unsigned int new_order, struct address_space *mapping)
{
struct folio *folio = page_folio(page);
/* Scan poisoned pages when split a poisoned folio to large folios */
@@ -3303,6 +3303,16 @@ static void __split_huge_page(struct page *page, struct list_head *list,
if (new_order)
page = compound_head(page);
+ /*
+ * Drop the mapping while the head page is still locked and thus pins
+ * the inode. The loop below may free the after-split subpages --
+ * including the head, when @page is a tail beyond EOF that the split
+ * dropped from the page cache -- which could otherwise let the inode,
+ * and @mapping, be freed before this unlock.
+ */
+ if (mapping)
+ i_mmap_unlock_read(mapping);
+
for (i = 0; i < nr; i += new_nr) {
struct page *subpage = head + i;
struct folio *new_folio = page_folio(subpage);
@@ -3580,7 +3590,9 @@ int split_huge_page_to_list_to_order(struct page *page, struct list_head *list,
mod_mthp_stat(order, MTHP_STAT_NR_ANON, -1);
mod_mthp_stat(new_order, MTHP_STAT_NR_ANON, 1 << (order - new_order));
}
- __split_huge_page(page, list, end, new_order);
+ __split_huge_page(page, list, end, new_order, mapping);
+ /* __split_huge_page() dropped the i_mmap lock */
+ mapping = NULL;
ret = 0;
} else {
spin_unlock(&ds_queue->split_queue_lock);
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 288/337] lib/alloc_tag: introduce mem_alloc_profiling_permanently_disabled()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (285 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 287/337] mm/huge_memory: unlock i_mmap_rwsem before releasing after-split folios Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 289/337] mm/slab: prevent unbounded recursion in free path with new kmalloc type Greg Kroah-Hartman
` (56 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Harry Yoo (Oracle),
Suren Baghdasaryan, Vlastimil Babka (SUSE), Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Harry Yoo (Oracle) <harry@kernel.org>
commit a37b0066a10aabf3c968b4566706fb866eaf9a85 upstream.
mem_alloc_profiling_enabled() tells whether memalloc profiling is
currently enabled. However, even when this function returns false,
it can be enabled later.
However, this is not enough. Some optimizations can be applied only when
memalloc profiling is permanently disabled. For example, to skip the
creation of KMALLOC_NO_OBJ_EXT caches at boot time, mem_profiling must
be set to "never", "0" w/ debugging on, or have been shutdown so that
it can no longer be enabled.
Introduce mem_alloc_profiling_permanently_disabled() for this purpose.
Signed-off-by: Harry Yoo (Oracle) <harry@kernel.org>
Acked-by: Suren Baghdasaryan <surenb@google.com>
Link: https://patch.msgid.link/20260713-kmalloc-no-objext-v3-3-47c7bd138de7@kernel.org
Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
[ harry@kernel.org: Move the definition of
mem_alloc_profiling_permanently_disabled() after
mem_profiling_support.
Unlike 6.18 and later kernels, mem_profiling_support is marked
__init and gets freed after boot. Since the function is needed
only when creating kmalloc caches, mark it __init as well. ]
Signed-off-by: Harry Yoo <harry@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/alloc_tag.h | 3 +++
lib/alloc_tag.c | 9 +++++++++
2 files changed, 12 insertions(+)
diff --git a/include/linux/alloc_tag.h b/include/linux/alloc_tag.h
index 6073a8f13c413..70025f8e24990 100644
--- a/include/linux/alloc_tag.h
+++ b/include/linux/alloc_tag.h
@@ -105,6 +105,8 @@ static inline bool mem_alloc_profiling_enabled(void)
&mem_alloc_profiling_key);
}
+bool __init mem_alloc_profiling_permanently_disabled(void);
+
static inline struct alloc_tag_counters alloc_tag_read(struct alloc_tag *tag)
{
struct alloc_tag_counters v = { 0, 0 };
@@ -198,6 +200,7 @@ static inline void alloc_tag_sub(union codetag_ref *ref, size_t bytes)
#define DEFINE_ALLOC_TAG(_alloc_tag)
static inline bool mem_alloc_profiling_enabled(void) { return false; }
+static inline bool mem_alloc_profiling_permanently_disabled(void) { return true; }
static inline void alloc_tag_add(union codetag_ref *ref, struct alloc_tag *tag,
size_t bytes) {}
static inline void alloc_tag_sub(union codetag_ref *ref, size_t bytes) {}
diff --git a/lib/alloc_tag.c b/lib/alloc_tag.c
index e76c40bf29d06..a0d11582029ef 100644
--- a/lib/alloc_tag.c
+++ b/lib/alloc_tag.c
@@ -183,6 +183,15 @@ static bool mem_profiling_support __meminitdata = true;
static bool mem_profiling_support __meminitdata;
#endif
+/*
+ * Memory allocation profiling is permanently disabled and cannot be enabled.
+ * Must be called after setup_early_mem_profiling().
+ */
+bool __init mem_alloc_profiling_permanently_disabled(void)
+{
+ return !mem_profiling_support;
+}
+
static int __init setup_early_mem_profiling(char *str)
{
bool enable;
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 289/337] mm/slab: prevent unbounded recursion in free path with new kmalloc type
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (286 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 288/337] lib/alloc_tag: introduce mem_alloc_profiling_permanently_disabled() Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 18:02 ` Nathan Chancellor
2026-08-07 14:38 ` [PATCH 6.12 290/337] gpio: pch: use raw_spinlock_t for the register lock Greg Kroah-Hartman
` (55 subsequent siblings)
343 siblings, 1 reply; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Danielle Costantino, Shakeel Butt,
Harry Yoo (Oracle), Suren Baghdasaryan, Vlastimil Babka (SUSE),
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Harry Yoo (Oracle) <harry@kernel.org>
commit d9e6a7623938968e3752b67e37eaff097e559a54 upstream.
Commit 280ea9c3154b ("mm/slab: avoid allocating slabobj_ext array from
its own slab") avoided recursive allocation of obj_exts from kmalloc
caches of the same size, by bumping the obj_exts array's allocation
size whenever the array size equals the size of the object being
allocated.
However, as reported by Danielle Costantino and Shakeel Butt,
even slabs from kmalloc caches of different sizes can form a cycle
by allocating obj_exts arrays from each other [1]:
What happened: a KMALLOC_NORMAL slab's obj_exts array (used by
allocation profiling / memcg accounting) is itself kmalloc()'d from a
KMALLOC_NORMAL cache, so the "slab holds another slab's obj_exts array"
relation can form cycles. With sizeof(struct slabobj_ext) == 16 and
the host's geometry:
- kmalloc-512 has 64 objects/slab -> array is 64*16 == 1024 bytes,
served from kmalloc-1k;
- kmalloc-1k has 32 objects/slab -> array is 32*16 == 512 bytes,
served from kmalloc-512.
A kmalloc-512 slab and a kmalloc-1k slab therefore hold each other's
obj_exts array. Discarding one frees the other's array, which empties
and discards that slab, which frees the first's array, and so on:
__free_slab() -> free_slab_obj_exts() -> kfree() -> discard_slab() ->
__free_slab() recurses along the cycle until the stack is exhausted.
With memory allocation profiling, this allows unbounded recursion
in the free path and led to a stack overflow on a production host in
the Meta fleet [1]:
BUG: TASK stack guard page was hit
Oops: stack guard page
RIP: 0010:kfree+0x8/0x5d0
Call Trace:
__free_slab+0x66/0xc0
kfree+0x3f0/0x5d0
... ( ~125x __free_slab <-> kfree ) ...
<kernel driver freeing a resource>
do_syscall_64
It is proposed [1] to resolve this issue by always serving the obj_exts
array allocation from kmalloc caches (or large kmalloc) of sizes larger
than the object size. However, as pointed out by Vlastimil Babka [2],
this can waste an excessive amount of memory as slabs from large
kmalloc sizes (e.g. kmalloc-8k) generally need obj_exts arrays much
smaller than the object size.
Therefore, rather than bumping the size, let us take a different
approach; disallow formation of cycles between kmalloc types when
allocating obj_exts arrays. Currently, all obj_exts arrays are served
from normal kmalloc caches. Cycles cannot be created if obj_exts arrays
of normal kmalloc caches are served from a special kmalloc type that can
never have obj_exts arrays.
To achieve this, create a new kmalloc type called KMALLOC_NO_OBJ_EXT.
KMALLOC_NO_OBJ_EXT caches are created with SLAB_NO_OBJ_EXT flag when
either 1) memory allocation profiling is not permanently disabled,
or 2) kmalloc types with a priority higher than KMALLOC_CGROUP are
aliased with KMALLOC_NORMAL.
Sheaf bootstrapping for KMALLOC_NO_OBJ_EXT caches now must be deferred
because allocation of a barn can trigger obj_exts array allocation of
normal kmalloc caches when the KMALLOC_NO_OBJ_EXT cache for that size
is not ready yet. For simplicity, perform bootstrapping of sheaves for
all kmalloc caches later.
Introduce a new slab alloc flag, SLAB_ALLOC_NO_OBJ_EXT, to prevent
allocation of obj_exts arrays, and let kmalloc_slab() override the type
to KMALLOC_NO_OBJ_EXT when specified. Note that kmalloc_type() remains
unchanged because kmalloc_flags() bypasses the kmalloc fastpath.
Do not pass SLAB_ALLOC_NO_RECURSE to kmalloc_flags() in
alloc_slab_obj_exts() and instead use SLAB_ALLOC_NO_OBJ_EXT only when
the objects are allocated from normal kmalloc caches. While this
prevents unbounded recursive allocation of obj_exts, it allows
KMALLOC_NO_OBJ_EXT caches to have sheaves.
Since sheaf allocations specify SLAB_ALLOC_NO_RECURSE that prevents
allocation of both sheaves and obj_exts arrays, the recursion depth
is bounded.
obj_exts arrays for non-kmalloc-normal caches can now have a valid tag.
Do not call mark_obj_codetag_empty() when freeing an obj_exts array to
avoid false warnings. KMALLOC_NO_OBJ_EXT don't need this as they never
allocate those arrays.
Reported-by: Danielle Costantino <dcostantino@meta.com>
Reported-by: Shakeel Butt <shakeel.butt@linux.dev>
Closes: https://lore.kernel.org/linux-mm/20260625230029.703750-1-shakeel.butt@linux.dev [1]
Fixes: 4b8736964640 ("mm/slab: add allocation accounting into slab allocation and free paths")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/linux-mm/c5c4208d-a6f0-413e-bad9-49be12f12d55@kernel.org [2]
Signed-off-by: Harry Yoo (Oracle) <harry@kernel.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Link: https://patch.msgid.link/20260713-kmalloc-no-objext-v3-4-47c7bd138de7@kernel.org
Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
[harry@kernel.org: Backport notes:
- Fix a minor conflict due to missing partitioned
kmalloc caches in 6.12.
- Use __GFP_NO_OBJ_EXT instead of SLAB_ALLOC_NO_OBJ_EXT
since slab's internal alloc_flags do not exist in 6.12.
- Deferring sheaf bootstrapping for kmalloc caches is not applied
as 6.12 doesn't have sheaves.
- Adjust the comment for SLAB_NO_OBJ_EXT, like in the commit
982e31382d9a ("mm/slab: decouple SLAB_NO_SHEAVES from
SLAB_NO_OBJ_EXT"). The rest of that commit is a no-op in 6.12 as
sheaves are not supported. Thus only adjust the comment.
- Resolve conflicts due to missing kmalloc_nolock() support in 6.12.
- Mark need_kmalloc_no_objext() __always_inline to make sure
the compiler does not generate a out-of-line function that could
access mem_profiling_support (which is marked __init) ]
Signed-off-by: Harry Yoo <harry@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/slab.h | 8 +++++++-
mm/slab.h | 28 ++++++++++++++++++++++++++--
mm/slab_common.c | 13 +++++++++++++
mm/slub.c | 34 +++++++++++++++++++++++-----------
4 files changed, 69 insertions(+), 14 deletions(-)
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 773843a71960d..28eba6cbb7670 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -206,7 +206,7 @@ enum _slab_flag_bits {
#endif
#define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */
-/* Slab created using create_boot_cache */
+/* Slab caches without obj_exts array */
#ifdef CONFIG_SLAB_OBJ_EXT
#define SLAB_NO_OBJ_EXT __SLAB_FLAG_BIT(_SLAB_NO_OBJ_EXT)
#else
@@ -578,6 +578,9 @@ enum kmalloc_cache_type {
#endif
#ifndef CONFIG_MEMCG
KMALLOC_CGROUP = KMALLOC_NORMAL,
+#endif
+#ifndef CONFIG_SLAB_OBJ_EXT
+ KMALLOC_NO_OBJ_EXT = KMALLOC_NORMAL,
#endif
KMALLOC_RANDOM_START = KMALLOC_NORMAL,
KMALLOC_RANDOM_END = KMALLOC_RANDOM_START + RANDOM_KMALLOC_CACHES_NR,
@@ -591,6 +594,9 @@ enum kmalloc_cache_type {
#endif
#ifdef CONFIG_MEMCG
KMALLOC_CGROUP,
+#endif
+#ifdef CONFIG_SLAB_OBJ_EXT
+ KMALLOC_NO_OBJ_EXT,
#endif
NR_KMALLOC_TYPES
};
diff --git a/mm/slab.h b/mm/slab.h
index b65d2462b3fdb..34a3d65b4ef5f 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -413,9 +413,13 @@ static inline struct kmem_cache *
kmalloc_slab(size_t size, kmem_buckets *b, gfp_t flags, unsigned long caller)
{
unsigned int index;
+ enum kmalloc_cache_type type = kmalloc_type(flags, caller);
+
+ if (flags & __GFP_NO_OBJ_EXT)
+ type = KMALLOC_NO_OBJ_EXT;
if (!b)
- b = &kmalloc_caches[kmalloc_type(flags, caller)];
+ b = &kmalloc_caches[type];
if (size <= 192)
index = kmalloc_size_index[size_index_elem(size)];
else
@@ -454,7 +458,8 @@ static inline bool is_kmalloc_normal(struct kmem_cache *s)
{
if (!is_kmalloc_cache(s))
return false;
- return !(s->flags & (SLAB_CACHE_DMA|SLAB_ACCOUNT|SLAB_RECLAIM_ACCOUNT));
+
+ return !(s->flags & (SLAB_CACHE_DMA|SLAB_ACCOUNT|SLAB_RECLAIM_ACCOUNT|SLAB_NO_OBJ_EXT));
}
/* Legal flag mask for kmem_cache_create(), for various configurations */
@@ -557,6 +562,25 @@ bool slab_in_kunit_test(void);
static inline bool slab_in_kunit_test(void) { return false; }
#endif
+/*
+ * Return true if KMALLOC_NORMAL caches may need obj_exts arrays.
+ *
+ * Memory allocation profiling requires obj_exts for all caches.
+ * Memcg usually doesn't need them for normal kmalloc caches, but kmalloc types
+ * with a priority higher than KMALLOC_CGROUP can be aliased with KMALLOC_NORMAL.
+ */
+static __always_inline inline bool need_kmalloc_no_objext(void)
+{
+ if (!mem_alloc_profiling_permanently_disabled())
+ return true;
+
+ if (!mem_cgroup_kmem_disabled() &&
+ (KMALLOC_NORMAL == KMALLOC_RECLAIM))
+ return true;
+
+ return false;
+}
+
#ifdef CONFIG_SLAB_OBJ_EXT
/*
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 477fa471da185..4cc96c3ea18e0 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -793,6 +793,12 @@ EXPORT_SYMBOL(kmalloc_size_roundup);
#define KMALLOC_RANDOM_NAME(N, sz)
#endif
+#ifdef CONFIG_SLAB_OBJ_EXT
+#define KMALLOC_NO_OBJ_EXT_NAME(sz) .name[KMALLOC_NO_OBJ_EXT] = "kmalloc-no-objext-" #sz,
+#else
+#define KMALLOC_NO_OBJ_EXT_NAME(sz)
+#endif
+
#define INIT_KMALLOC_INFO(__size, __short_size) \
{ \
.name[KMALLOC_NORMAL] = "kmalloc-" #__short_size, \
@@ -800,6 +806,7 @@ EXPORT_SYMBOL(kmalloc_size_roundup);
KMALLOC_CGROUP_NAME(__short_size) \
KMALLOC_DMA_NAME(__short_size) \
KMALLOC_RANDOM_NAME(RANDOM_KMALLOC_CACHES_NR, __short_size) \
+ KMALLOC_NO_OBJ_EXT_NAME(__short_size) \
.size = __size, \
}
@@ -907,6 +914,12 @@ new_kmalloc_cache(int idx, enum kmalloc_cache_type type)
return;
}
flags |= SLAB_ACCOUNT;
+ } else if (IS_ENABLED(CONFIG_SLAB_OBJ_EXT) && type == KMALLOC_NO_OBJ_EXT) {
+ if (!need_kmalloc_no_objext()) {
+ kmalloc_caches[type][idx] = kmalloc_caches[KMALLOC_NORMAL][idx];
+ return;
+ }
+ flags |= SLAB_NO_OBJ_EXT | SLAB_NO_MERGE;
} else if (IS_ENABLED(CONFIG_ZONE_DMA) && (type == KMALLOC_DMA)) {
flags |= SLAB_CACHE_DMA;
}
diff --git a/mm/slub.c b/mm/slub.c
index cf678f4617258..b61225c3503bf 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1997,8 +1997,13 @@ int alloc_slab_obj_exts(struct slab *slab, struct kmem_cache *s,
struct slabobj_ext *vec;
gfp &= ~OBJCGS_CLEAR_MASK;
- /* Prevent recursive extension vector allocation */
- gfp |= __GFP_NO_OBJ_EXT;
+ /*
+ * In most cases, obj_exts arrays are allocated from normal kmalloc.
+ * However, normal kmalloc caches must allocate them from
+ * KMALLOC_NO_OBJ_EXT caches to prevent recursion.
+ */
+ if (is_kmalloc_normal(s))
+ gfp |= __GFP_NO_OBJ_EXT;
vec = kcalloc_node(objects, sizeof(struct slabobj_ext), gfp,
slab_nid(slab));
if (!vec) {
@@ -2014,6 +2019,22 @@ int alloc_slab_obj_exts(struct slab *slab, struct kmem_cache *s,
return -ENOMEM;
}
+ if (IS_ENABLED(CONFIG_DEBUG_VM)) {
+ struct kmem_cache *exts_cache;
+ struct slab *exts_slab;
+
+ exts_slab = virt_to_slab(vec);
+ if (exts_slab) {
+ /*
+ * The vector must be allocated from either normal or
+ * KMALLOC_NO_OBJ_EXT kmalloc caches to avoid cycles.
+ */
+ exts_cache = exts_slab->slab_cache;
+ WARN_ON_ONCE(!is_kmalloc_normal(exts_cache) &&
+ !(exts_cache->flags & SLAB_NO_OBJ_EXT));
+ }
+ }
+
new_exts = (unsigned long)vec;
#ifdef CONFIG_MEMCG
new_exts |= MEMCG_DATA_OBJEXTS;
@@ -2034,7 +2055,6 @@ int alloc_slab_obj_exts(struct slab *slab, struct kmem_cache *s,
* assign slabobj_exts in parallel. In this case the existing
* objcg vector should be reused.
*/
- mark_objexts_empty(vec);
kfree(vec);
return 0;
} else if (cmpxchg(&slab->obj_exts, old_exts, new_exts) != old_exts) {
@@ -2061,14 +2081,6 @@ static inline void free_slab_obj_exts(struct slab *slab)
return;
}
- /*
- * obj_exts was created with __GFP_NO_OBJ_EXT flag, therefore its
- * corresponding extension will be NULL. alloc_tag_sub() will throw a
- * warning if slab has extensions but the extension of an object is
- * NULL, therefore replace NULL with CODETAG_EMPTY to indicate that
- * the extension for obj_exts is expected to be NULL.
- */
- mark_objexts_empty(obj_exts);
kfree(obj_exts);
slab->obj_exts = 0;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 353+ messages in thread
* [PATCH 6.12 290/337] gpio: pch: use raw_spinlock_t for the register lock
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (287 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 289/337] mm/slab: prevent unbounded recursion in free path with new kmalloc type Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 291/337] usb: gadget: f_tcm: synchronize delayed set_alt with teardown Greg Kroah-Hartman
` (54 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Junjie Cao, Linus Walleij,
Bartosz Golaszewski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Junjie Cao <junjie.cao@intel.com>
[ Upstream commit a02b8950d619123da64f69b70fe1dadef217dfe4 ]
pch_irq_type() is registered as the irq_chip .irq_set_type callback and
takes chip->spinlock with spin_lock_irqsave(). This callback is reached
from __setup_irq() -> __irq_set_trigger() -> chip->irq_set_type() while
the caller holds desc->lock, a raw_spinlock_t, with hardirqs disabled.
That context is not sleepable, but on PREEMPT_RT a regular spinlock_t is
an rtmutex-backed sleeping lock, so acquiring it there is invalid.
This was confirmed on a PREEMPT_RT kernel with lockdep
(PROVE_RAW_LOCK_NESTING and DEBUG_ATOMIC_SLEEP). A grounded PoC mirrored
pch_irq_type()'s locking and drove it through the real genirq carrier
irq_set_irq_type() -> __irq_set_trigger() -> chip->irq_set_type(), i.e.
the same __irq_set_trigger() edge that __setup_irq() takes for a
requested IRQ. With the original spin_lock_irqsave() edge lockdep
reported an invalid wait context, immediately followed by:
BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 95, name: insmod
hardirqs last disabled at (3784): _raw_spin_lock_irqsave+0x4f/0x60
rt_spin_lock+0x3a/0x1c0
repro_irq_set_type+0x64/0xa0 [pch_repro]
__irq_set_trigger+0x69/0x140
irq_set_irq_type+0x78/0xd0
Switching the mirrored lock to raw_spinlock_t made both splats go away.
Convert the register lock to raw_spinlock_t. The same lock also
serializes the GPIO direction/value callbacks and the suspend/resume
register save/restore, but all of those critical sections only perform
MMIO register accesses (ioread32()/iowrite32()) and
irq_set_handler_locked(); none of them contain sleepable operations.
Keeping this register lock non-sleeping is therefore appropriate for the
irqchip callbacks and does not change the GPIO-side locking contract.
This is the same class of issue and fix as recently addressed for other
GPIO controllers, e.g. commit 286533cb14a3 ("gpio: sch: use raw_spinlock_t
in the irq startup path") and commit 90f0109019e6 ("gpio: eic-sprd: use
raw_spinlock_t in the irq startup path").
Fixes: 38eb18a6f92d ("gpio-pch: Support interrupt function")
Cc: stable@vger.kernel.org
Signed-off-by: Junjie Cao <junjie.cao@intel.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260723014129.1129730-1-junjie.cao@intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
(cherry picked from commit a02b8950d619123da64f69b70fe1dadef217dfe4)
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpio/gpio-pch.c | 28 ++++++++++++++--------------
1 file changed, 14 insertions(+), 14 deletions(-)
--- a/drivers/gpio/gpio-pch.c
+++ b/drivers/gpio/gpio-pch.c
@@ -96,7 +96,7 @@ struct pch_gpio {
struct pch_gpio_reg_data pch_gpio_reg;
int irq_base;
enum pch_type_t ioh;
- spinlock_t spinlock;
+ raw_spinlock_t spinlock;
};
static void pch_gpio_set(struct gpio_chip *gpio, unsigned int nr, int val)
@@ -105,7 +105,7 @@ static void pch_gpio_set(struct gpio_chi
struct pch_gpio *chip = gpiochip_get_data(gpio);
unsigned long flags;
- spin_lock_irqsave(&chip->spinlock, flags);
+ raw_spin_lock_irqsave(&chip->spinlock, flags);
reg_val = ioread32(&chip->reg->po);
if (val)
reg_val |= BIT(nr);
@@ -113,7 +113,7 @@ static void pch_gpio_set(struct gpio_chi
reg_val &= ~BIT(nr);
iowrite32(reg_val, &chip->reg->po);
- spin_unlock_irqrestore(&chip->spinlock, flags);
+ raw_spin_unlock_irqrestore(&chip->spinlock, flags);
}
static int pch_gpio_get(struct gpio_chip *gpio, unsigned int nr)
@@ -131,7 +131,7 @@ static int pch_gpio_direction_output(str
u32 reg_val;
unsigned long flags;
- spin_lock_irqsave(&chip->spinlock, flags);
+ raw_spin_lock_irqsave(&chip->spinlock, flags);
reg_val = ioread32(&chip->reg->po);
if (val)
@@ -145,7 +145,7 @@ static int pch_gpio_direction_output(str
pm |= BIT(nr);
iowrite32(pm, &chip->reg->pm);
- spin_unlock_irqrestore(&chip->spinlock, flags);
+ raw_spin_unlock_irqrestore(&chip->spinlock, flags);
return 0;
}
@@ -156,12 +156,12 @@ static int pch_gpio_direction_input(stru
u32 pm;
unsigned long flags;
- spin_lock_irqsave(&chip->spinlock, flags);
+ raw_spin_lock_irqsave(&chip->spinlock, flags);
pm = ioread32(&chip->reg->pm);
pm &= BIT(gpio_pins[chip->ioh]) - 1;
pm &= ~BIT(nr);
iowrite32(pm, &chip->reg->pm);
- spin_unlock_irqrestore(&chip->spinlock, flags);
+ raw_spin_unlock_irqrestore(&chip->spinlock, flags);
return 0;
}
@@ -263,7 +263,7 @@ static int pch_irq_type(struct irq_data
return 0;
}
- spin_lock_irqsave(&chip->spinlock, flags);
+ raw_spin_lock_irqsave(&chip->spinlock, flags);
/* Set interrupt mode */
im = ioread32(im_reg) & ~(PCH_IM_MASK << (im_pos * 4));
@@ -275,7 +275,7 @@ static int pch_irq_type(struct irq_data
else if (type & IRQ_TYPE_EDGE_BOTH)
irq_set_handler_locked(d, handle_edge_irq);
- spin_unlock_irqrestore(&chip->spinlock, flags);
+ raw_spin_unlock_irqrestore(&chip->spinlock, flags);
return 0;
}
@@ -372,7 +372,7 @@ static int pch_gpio_probe(struct pci_dev
chip->ioh = id->driver_data;
chip->reg = chip->base;
pci_set_drvdata(pdev, chip);
- spin_lock_init(&chip->spinlock);
+ raw_spin_lock_init(&chip->spinlock);
pch_gpio_setup(chip);
ret = devm_gpiochip_add_data(dev, &chip->gpio, chip);
@@ -405,9 +405,9 @@ static int __maybe_unused pch_gpio_suspe
struct pch_gpio *chip = dev_get_drvdata(dev);
unsigned long flags;
- spin_lock_irqsave(&chip->spinlock, flags);
+ raw_spin_lock_irqsave(&chip->spinlock, flags);
pch_gpio_save_reg_conf(chip);
- spin_unlock_irqrestore(&chip->spinlock, flags);
+ raw_spin_unlock_irqrestore(&chip->spinlock, flags);
return 0;
}
@@ -417,11 +417,11 @@ static int __maybe_unused pch_gpio_resum
struct pch_gpio *chip = dev_get_drvdata(dev);
unsigned long flags;
- spin_lock_irqsave(&chip->spinlock, flags);
+ raw_spin_lock_irqsave(&chip->spinlock, flags);
iowrite32(0x01, &chip->reg->reset);
iowrite32(0x00, &chip->reg->reset);
pch_gpio_restore_reg_conf(chip);
- spin_unlock_irqrestore(&chip->spinlock, flags);
+ raw_spin_unlock_irqrestore(&chip->spinlock, flags);
return 0;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 291/337] usb: gadget: f_tcm: synchronize delayed set_alt with teardown
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (288 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 290/337] gpio: pch: use raw_spinlock_t for the register lock Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 292/337] usb: typec: ucsi: split connector lock classes Greg Kroah-Hartman
` (53 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, stable, Cen Zhang, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cen Zhang <zzzccc427@gmail.com>
[ Upstream commit 79e2d75725c85607f8a9d87ae9cace62a19f767d ]
The f_tcm set_alt() path defers endpoint setup to a work item and
completes the delayed status response from process context. The delayed
work uses f_tcm private state and may complete the setup request after
disconnect or function teardown has already moved on.
Cancel and drain the delayed set_alt work when the function is unbound or
freed. For disable paths, which are reached under the composite device
lock, use a small state machine and a non-sleeping cancellation path
instead of cancel_work_sync(). If the work is already running, mark it
cancelled and let the worker own the cleanup; otherwise tcm_disable() can
cancel the queued work and clean up immediately.
Also serialize the final delayed-status completion with the cancellation
check while holding the composite device lock. This prevents a disconnect
from clearing delayed_status while the worker is about to complete the
control request.
Validation reproduced this kernel report:
BUG: KASAN: slab-use-after-free in tcm_delayed_set_alt+0x6c/0xef0
Call Trace:
<TASK>
dump_stack_lvl+0x66/0xa0
print_report+0xce/0x630
? tcm_delayed_set_alt+0x6c/0xef0
? srso_alias_return_thunk+0x5/0xfbef5
? __virt_addr_valid+0x188/0x320
? tcm_delayed_set_alt+0x6c/0xef0
kasan_report+0xe0/0x110
? tcm_delayed_set_alt+0x6c/0xef0
tcm_delayed_set_alt+0x6c/0xef0
? __pfx_tcm_delayed_set_alt+0x10/0x10
? process_one_work+0x4cb/0xb90
? rcu_is_watching+0x20/0x50
? tcm_delayed_set_alt+0x9/0xef0
process_one_work+0x4d7/0xb90
? __pfx_process_one_work+0x10/0x10
? srso_alias_return_thunk+0x5/0xfbef5
? __list_add_valid_or_report+0x37/0xf0
? __pfx_tcm_delayed_set_alt+0x10/0x10
? srso_alias_return_thunk+0x5/0xfbef5
worker_thread+0x2d8/0x570
? __pfx_worker_thread+0x10/0x10
kthread+0x1ad/0x1f0
? __pfx_kthread+0x10/0x10
ret_from_fork+0x3c9/0x540
? __pfx_ret_from_fork+0x10/0x10
? srso_alias_return_thunk+0x5/0xfbef5
? __switch_to+0x2e9/0x730
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1a/0x30
</TASK>
Allocated by task 544:
kasan_save_stack+0x33/0x60
kasan_save_track+0x14/0x30
__kasan_kmalloc+0x8f/0xa0
tcm_alloc+0x68/0x180
usb_get_function+0x36/0x60
config_usb_cfg_link+0x125/0x1b0
configfs_symlink+0x322/0x890
vfs_symlink+0xc2/0x270
filename_symlinkat+0x295/0x2f0
__x64_sys_symlinkat+0x62/0x90
do_syscall_64+0x115/0x6a0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 661:
kasan_save_stack+0x33/0x60
kasan_save_track+0x14/0x30
kasan_save_free_info+0x3b/0x60
__kasan_slab_free+0x43/0x70
kfree+0x2f9/0x530
config_usb_cfg_unlink+0x173/0x1e0
configfs_unlink+0x1fa/0x340
vfs_unlink+0x15c/0x510
filename_unlinkat+0x2ba/0x450
__x64_sys_unlinkat+0x63/0x90
do_syscall_64+0x115/0x6a0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Fixes: c52661d60f63 ("usb-gadget: Initial merge of target module for UASP + BOT")
Cc: stable <stable@kernel.org>
Assisted-by: Codex:gpt-5.5
Signed-off-by: Cen Zhang <zzzccc427@gmail.com>
Link: https://patch.msgid.link/20260627104153.3822495-1-zzzccc427@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ adjusted context for 6.12's scalar `struct usbg_cdb cmd` and missing `stream_hash`, dropping the `hash_init()` context line ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/function/f_tcm.c | 192 ++++++++++++++++++++++++++++++------
drivers/usb/gadget/function/tcm.h | 13 ++
2 files changed, 177 insertions(+), 28 deletions(-)
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -2014,31 +2014,158 @@ ep_fail:
return -ENOTSUPP;
}
-struct guas_setup_wq {
- struct work_struct work;
- struct f_uas *fu;
- unsigned int alt;
-};
+static void tcm_cleanup_old_alt(struct f_uas *fu)
+{
+ if (fu->flags & USBG_IS_UAS)
+ uasp_cleanup_old_alt(fu);
+ else if (fu->flags & USBG_IS_BOT)
+ bot_cleanup_old_alt(fu);
+ fu->flags = 0;
+}
+
+static void tcm_delayed_set_alt_done(struct f_uas *fu)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_IDLE;
+ fu->delayed_set_alt_cancel = false;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+}
+
+static bool tcm_delayed_set_alt_cancelled(struct f_uas *fu)
+{
+ bool cancelled;
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ cancelled = fu->delayed_set_alt_cancel;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+
+ return cancelled;
+}
+
+static bool tcm_complete_delayed_status(struct f_uas *fu)
+{
+ struct usb_composite_dev *cdev = fu->function.config->cdev;
+ struct usb_request *req = cdev->req;
+ unsigned long cdev_flags;
+ bool cancelled;
+ int ret;
+
+ spin_lock_irqsave(&cdev->lock, cdev_flags);
+ spin_lock(&fu->delayed_set_alt_lock);
+ cancelled = fu->delayed_set_alt_cancel;
+ if (!cancelled) {
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_IDLE;
+ fu->delayed_set_alt_cancel = false;
+ }
+ spin_unlock(&fu->delayed_set_alt_lock);
+
+ if (cancelled) {
+ spin_unlock_irqrestore(&cdev->lock, cdev_flags);
+ return false;
+ }
+
+ if (cdev->delayed_status == 0) {
+ WARN(cdev, "%s: Unexpected call\n", __func__);
+ } else if (--cdev->delayed_status == 0) {
+ req->length = 0;
+ req->context = cdev;
+ ret = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC);
+ if (ret == 0) {
+ cdev->setup_pending = true;
+ } else {
+ req->status = 0;
+ req->complete(cdev->gadget->ep0, req);
+ }
+ }
+
+ spin_unlock_irqrestore(&cdev->lock, cdev_flags);
+
+ return true;
+}
+
+static bool tcm_cancel_delayed_set_alt(struct f_uas *fu)
+{
+ bool cleanup = false;
+ bool cancel = false;
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ switch (fu->delayed_set_alt_state) {
+ case USBG_DELAYED_SET_ALT_IDLE:
+ cleanup = true;
+ break;
+ case USBG_DELAYED_SET_ALT_QUEUED:
+ case USBG_DELAYED_SET_ALT_RUNNING:
+ fu->delayed_set_alt_cancel = true;
+ cancel = true;
+ break;
+ }
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+
+ if (cancel && cancel_work(&fu->delayed_set_alt)) {
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ if (fu->delayed_set_alt_state == USBG_DELAYED_SET_ALT_QUEUED) {
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_IDLE;
+ fu->delayed_set_alt_cancel = false;
+ cleanup = true;
+ }
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+ }
+
+ return cleanup;
+}
+
+static void tcm_cancel_delayed_set_alt_sync(struct f_uas *fu)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ if (fu->delayed_set_alt_state != USBG_DELAYED_SET_ALT_IDLE)
+ fu->delayed_set_alt_cancel = true;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+
+ cancel_work_sync(&fu->delayed_set_alt);
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_IDLE;
+ fu->delayed_set_alt_cancel = false;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+}
static void tcm_delayed_set_alt(struct work_struct *wq)
{
- struct guas_setup_wq *work = container_of(wq, struct guas_setup_wq,
- work);
- struct f_uas *fu = work->fu;
- int alt = work->alt;
+ struct f_uas *fu = container_of(wq, struct f_uas, delayed_set_alt);
+ unsigned long flags;
+ unsigned int alt;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ if (fu->delayed_set_alt_state != USBG_DELAYED_SET_ALT_QUEUED) {
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
+ return;
+ }
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_RUNNING;
+ alt = fu->delayed_alt;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
- kfree(work);
+ tcm_cleanup_old_alt(fu);
- if (fu->flags & USBG_IS_BOT)
- bot_cleanup_old_alt(fu);
- if (fu->flags & USBG_IS_UAS)
- uasp_cleanup_old_alt(fu);
+ if (tcm_delayed_set_alt_cancelled(fu))
+ goto out_done;
if (alt == USB_G_ALT_INT_BBB)
bot_set_alt(fu);
else if (alt == USB_G_ALT_INT_UAS)
uasp_set_alt(fu);
- usb_composite_setup_continue(fu->function.config->cdev);
+
+ if (tcm_complete_delayed_status(fu))
+ return;
+
+ tcm_cleanup_old_alt(fu);
+out_done:
+ tcm_delayed_set_alt_done(fu);
}
static int tcm_get_alt(struct usb_function *f, unsigned intf)
@@ -2064,15 +2191,20 @@ static int tcm_set_alt(struct usb_functi
return -EOPNOTSUPP;
if ((alt == USB_G_ALT_INT_BBB) || (alt == USB_G_ALT_INT_UAS)) {
- struct guas_setup_wq *work;
+ unsigned long flags;
+
+ spin_lock_irqsave(&fu->delayed_set_alt_lock, flags);
+ if (fu->delayed_set_alt_state != USBG_DELAYED_SET_ALT_IDLE) {
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock,
+ flags);
+ return -EBUSY;
+ }
+ fu->delayed_alt = alt;
+ fu->delayed_set_alt_cancel = false;
+ fu->delayed_set_alt_state = USBG_DELAYED_SET_ALT_QUEUED;
+ spin_unlock_irqrestore(&fu->delayed_set_alt_lock, flags);
- work = kmalloc(sizeof(*work), GFP_ATOMIC);
- if (!work)
- return -ENOMEM;
- INIT_WORK(&work->work, tcm_delayed_set_alt);
- work->fu = fu;
- work->alt = alt;
- schedule_work(&work->work);
+ schedule_work(&fu->delayed_set_alt);
return USB_GADGET_DELAYED_STATUS;
}
return -EOPNOTSUPP;
@@ -2082,11 +2214,8 @@ static void tcm_disable(struct usb_funct
{
struct f_uas *fu = to_f_uas(f);
- if (fu->flags & USBG_IS_UAS)
- uasp_cleanup_old_alt(fu);
- else if (fu->flags & USBG_IS_BOT)
- bot_cleanup_old_alt(fu);
- fu->flags = 0;
+ if (tcm_cancel_delayed_set_alt(fu))
+ tcm_cleanup_old_alt(fu);
}
static int tcm_setup(struct usb_function *f,
@@ -2234,11 +2363,16 @@ static void tcm_free(struct usb_function
{
struct f_uas *tcm = to_f_uas(f);
+ tcm_cancel_delayed_set_alt_sync(tcm);
kfree(tcm);
}
static void tcm_unbind(struct usb_configuration *c, struct usb_function *f)
{
+ struct f_uas *fu = to_f_uas(f);
+
+ tcm_cancel_delayed_set_alt_sync(fu);
+ tcm_cleanup_old_alt(fu);
usb_free_all_descriptors(f);
}
@@ -2271,6 +2405,8 @@ static struct usb_function *tcm_alloc(st
fu->function.disable = tcm_disable;
fu->function.free_func = tcm_free;
fu->tpg = tpg_instances[i].tpg;
+ INIT_WORK(&fu->delayed_set_alt, tcm_delayed_set_alt);
+ spin_lock_init(&fu->delayed_set_alt_lock);
mutex_unlock(&tpg_instances_lock);
return &fu->function;
--- a/drivers/usb/gadget/function/tcm.h
+++ b/drivers/usb/gadget/function/tcm.h
@@ -3,6 +3,7 @@
#define __TARGET_USB_GADGET_H__
#include <linux/kref.h>
+#include <linux/spinlock.h>
/* #include <linux/usb/uas.h> */
#include <linux/usb/composite.h>
#include <linux/usb/uas.h>
@@ -26,6 +27,12 @@ enum {
#define USB_G_DEFAULT_SESSION_TAGS 128
+enum {
+ USBG_DELAYED_SET_ALT_IDLE = 0,
+ USBG_DELAYED_SET_ALT_QUEUED,
+ USBG_DELAYED_SET_ALT_RUNNING,
+};
+
struct tcm_usbg_nexus {
struct se_session *tvn_se_sess;
};
@@ -117,6 +124,12 @@ struct f_uas {
#define USBG_IS_BOT (1 << 3)
#define USBG_BOT_CMD_PEND (1 << 4)
+ struct work_struct delayed_set_alt;
+ spinlock_t delayed_set_alt_lock; /* protects delayed_set_alt_* */
+ unsigned int delayed_alt;
+ unsigned int delayed_set_alt_state;
+ bool delayed_set_alt_cancel;
+
struct usbg_cdb cmd;
struct usb_ep *ep_in;
struct usb_ep *ep_out;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 292/337] usb: typec: ucsi: split connector lock classes
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (289 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 291/337] usb: gadget: f_tcm: synchronize delayed set_alt with teardown Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 293/337] usb: typec: ucsi: Fix race condition and ordering in port unregistration Greg Kroah-Hartman
` (52 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sergey Senozhatsky, Heikki Krogerus,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sergey Senozhatsky <senozhatsky@chromium.org>
[ Upstream commit 8c22256bbafad3dc5fdbe9f684d045b67ff06a68 ]
Lockdep detects a possible recursive locking scenario during
ucsi init:
[ 5.418616] ============================================
[ 5.418634] WARNING: possible recursive locking detected
[ 5.418706] --------------------------------------------
[ 5.418725] kworker/4:1/82 is trying to acquire lock:
[ 5.418759] ffff888119a34648 (&con->lock){+.+.}-{3:3}, at: ucsi_init_work+0x1a78/0x2eb0 [typec_ucsi]
[ 5.418801]
but task is already holding lock:
[ 5.418835] ffff888119a34080 (&con->lock){+.+.}-{3:3}, at: ucsi_init_work+0x1a78/0x2eb0 [typec_ucsi]
[ 5.418884]
other info that might help us debug this:
[ 5.418904] Possible unsafe locking scenario:
[ 5.418937] CPU0
[ 5.418956] ----
[ 5.418991] lock(&con->lock);
[ 5.419013] lock(&con->lock);
[ 5.419033]
*** DEADLOCK ***
[ 5.419387] Call Trace:
[ 5.419406] <TASK>
[ 5.419425] dump_stack_lvl+0x61/0xa0
[ 5.419448] print_deadlock_bug+0x4a6/0x650
[ 5.419483] __lock_acquire+0x62b6/0x7f50
[ 5.419507] lock_acquire+0x11b/0x390
[ 5.419654] __mutex_lock+0xbc/0xcd0
[ 5.419741] ucsi_init_work+0x1a78/0x2eb0
[ 5.419785] ? worker_thread+0xf53/0x2bc0
[ 5.419819] worker_thread+0xff4/0x2bc0
[ 5.419842] kthread+0x2a7/0x330
[ 5.419863] ? __pfx_worker_thread+0x10/0x10
[ 5.419896] ? __pfx_kthread+0x10/0x10
[ 5.419916] ret_from_fork+0x38/0x70
[ 5.419936] ? __pfx_kthread+0x10/0x10
[ 5.419969] ret_from_fork_asm+0x1b/0x30
[ 5.419991] </TASK>
[ 5.420009] ---[ end trace 0000000000000000 ]---
The problem is that all connector locks belong to the same
lockdep lock class, so the following loop:
for (i = 0; i < ucsi->cap.num_connectors; i++)
ucsi_register_port(connector[i])
mutex_lock(&connector[i]->lock)
looks like a recursive acquire of the same mutex. Put each connector
lock into a dedicated lock class so that lockdep doesn't see it as a
possible recursion.
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260515060042.136083-1-senozhatsky@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 7aa7d4bf9d3f ("usb: typec: ucsi: Fix race condition and ordering in port unregistration")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/typec/ucsi/ucsi.c | 8 ++++++++
drivers/usb/typec/ucsi/ucsi.h | 1 +
2 files changed, 9 insertions(+)
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -1569,6 +1569,7 @@ static int ucsi_register_port(struct ucs
INIT_WORK(&con->work, ucsi_handle_connector_change);
init_completion(&con->complete);
mutex_init(&con->lock);
+ lockdep_set_class(&con->lock, &con->lock_key);
INIT_LIST_HEAD(&con->partner_tasks);
con->ucsi = ucsi;
@@ -1808,6 +1809,9 @@ static int ucsi_init(struct ucsi *ucsi)
goto err_reset;
}
+ for (i = 0; i < ucsi->cap.num_connectors; i++)
+ lockdep_register_key(&connector[i].lock_key);
+
/* Register all connectors */
for (i = 0; i < ucsi->cap.num_connectors; i++) {
connector[i].num = i + 1;
@@ -1837,6 +1841,9 @@ static int ucsi_init(struct ucsi *ucsi)
return 0;
err_unregister:
+ for (i = 0; i < ucsi->cap.num_connectors; i++)
+ lockdep_unregister_key(&connector[i].lock_key);
+
for (con = connector; con->port; con++) {
if (con->wq)
destroy_workqueue(con->wq);
@@ -2107,6 +2114,7 @@ void ucsi_unregister(struct ucsi *ucsi)
usb_power_delivery_unregister(ucsi->connector[i].pd);
ucsi->connector[i].pd = NULL;
typec_unregister_port(ucsi->connector[i].port);
+ lockdep_unregister_key(&ucsi->connector[i].lock_key);
}
kfree(ucsi->connector);
--- a/drivers/usb/typec/ucsi/ucsi.h
+++ b/drivers/usb/typec/ucsi/ucsi.h
@@ -422,6 +422,7 @@ struct ucsi_connector {
struct ucsi *ucsi;
struct mutex lock; /* port lock */
+ struct lock_class_key lock_key;
struct work_struct work;
struct completion complete;
struct workqueue_struct *wq;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 293/337] usb: typec: ucsi: Fix race condition and ordering in port unregistration
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (290 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 292/337] usb: typec: ucsi: split connector lock classes Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 294/337] media: i2c: imx219: Rename VTS to FRM_LENGTH Greg Kroah-Hartman
` (51 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, stable, Andrei Kuchynski,
Benson Leung, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Andrei Kuchynski <akuchynski@chromium.org>
[ Upstream commit 7aa7d4bf9d3fa9a6a47b640ad103ab433b7ff261 ]
A synchronization issue exists during port unregistration where pending
partner work items can race against workqueue destruction, leading to
use-after-free conditions:
cros_ec_ucsi cros_ec_ucsi.3.auto: error -ETIMEDOUT: PPM init failed
BUG: kernel NULL pointer dereference, address: 0000000000000000
RIP: 0010:__queue_work+0x83/0x4a0
Call Trace:
<IRQ>
__cfi_delayed_work_timer_fn+0x10/0x10
run_timer_softirq+0x3b6/0xbd0
sched_clock_cpu+0xc/0x110
irq_exit_rcu+0x18d/0x330
fred_sysvec_apic_timer_interrupt+0x5e/0x80
Fix this by ensuring strict ordering and proper serialization during
teardown:
1. Move ucsi_unregister_partner() to the beginning of the teardown
sequence and protect it under the connector mutex lock.
2. Ensure all pending partner tasks are explicitly flushed and finished
before the workqueue is destroyed.
3. Switch from mod_delayed_work() to a cancel_delayed_work() and
queue_delayed_work() sequence. This guarantees that items currently marked
as pending won't be scheduled an additional time, preventing a double
release of resources which leads to the following crash:
Oops: general protection fault, probably for non-canonical address
0xdead000000000122: 0000 [#1] SMP NOPTI
Workqueue: cros_ec_ucsi.3.auto-con2 ucsi_poll_worker
RIP: 0010:ucsi_poll_worker+0x65/0x1e0
Call Trace:
<TASK>
process_scheduled_works+0x218/0x6d0
worker_thread+0x188/0x3f0
__cfi_worker_thread+0x10/0x10
kthread+0x226/0x2a0
To ensure these rules are applied identically across both the normal
teardown and the ucsi_init() error paths, consolidate the cleanup logic
into a new helper, ucsi_unregister_port().
Cc: stable <stable@kernel.org>
Fixes: b9aa02ca39a4 ("usb: typec: ucsi: Add polling mechanism for partner tasks like alt mode checking")
Fixes: b13abcb7ddd8 ("usb: typec: ucsi: Fix NULL pointer access")
Fixes: fac4b8633fd6 ("usb: ucsi: Ensure connector delayed work items are flushed")
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://patch.msgid.link/20260707141736.1635698-1-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/typec/ucsi/ucsi.c | 82 +++++++++++++++++++-----------------------
1 file changed, 39 insertions(+), 43 deletions(-)
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -1719,6 +1719,42 @@ out_unlock:
return ret;
}
+static void ucsi_unregister_port(struct ucsi_connector *con)
+{
+ struct ucsi_work *uwork;
+
+ if (con->wq) {
+ mutex_lock(&con->lock);
+ ucsi_unregister_partner(con);
+ /*
+ * queue delayed items immediately so they can execute
+ * and free themselves before the wq is destroyed
+ */
+ list_for_each_entry(uwork, &con->partner_tasks, node) {
+ if (cancel_delayed_work(&uwork->work))
+ queue_delayed_work(con->wq, &uwork->work, 0);
+ }
+ mutex_unlock(&con->lock);
+
+ destroy_workqueue(con->wq);
+ con->wq = NULL;
+ } else {
+ ucsi_unregister_partner(con);
+ }
+
+ ucsi_unregister_altmodes(con, UCSI_RECIPIENT_CON);
+ ucsi_unregister_port_psy(con);
+
+ usb_power_delivery_unregister_capabilities(con->port_sink_caps);
+ con->port_sink_caps = NULL;
+ usb_power_delivery_unregister_capabilities(con->port_source_caps);
+ con->port_source_caps = NULL;
+ usb_power_delivery_unregister(con->pd);
+ con->pd = NULL;
+ typec_unregister_port(con->port);
+ con->port = NULL;
+}
+
static u64 ucsi_get_supported_notifications(struct ucsi *ucsi)
{
u16 features = ucsi->cap.features;
@@ -1844,22 +1880,8 @@ err_unregister:
for (i = 0; i < ucsi->cap.num_connectors; i++)
lockdep_unregister_key(&connector[i].lock_key);
- for (con = connector; con->port; con++) {
- if (con->wq)
- destroy_workqueue(con->wq);
- ucsi_unregister_partner(con);
- ucsi_unregister_altmodes(con, UCSI_RECIPIENT_CON);
- ucsi_unregister_port_psy(con);
-
- usb_power_delivery_unregister_capabilities(con->port_sink_caps);
- con->port_sink_caps = NULL;
- usb_power_delivery_unregister_capabilities(con->port_source_caps);
- con->port_source_caps = NULL;
- usb_power_delivery_unregister(con->pd);
- con->pd = NULL;
- typec_unregister_port(con->port);
- con->port = NULL;
- }
+ for (con = connector; con->port; con++)
+ ucsi_unregister_port(con);
kfree(connector);
err_reset:
memset(&ucsi->cap, 0, sizeof(ucsi->cap));
@@ -2087,33 +2109,7 @@ void ucsi_unregister(struct ucsi *ucsi)
for (i = 0; i < ucsi->cap.num_connectors; i++) {
cancel_work_sync(&ucsi->connector[i].work);
-
- if (ucsi->connector[i].wq) {
- struct ucsi_work *uwork;
-
- mutex_lock(&ucsi->connector[i].lock);
- /*
- * queue delayed items immediately so they can execute
- * and free themselves before the wq is destroyed
- */
- list_for_each_entry(uwork, &ucsi->connector[i].partner_tasks, node)
- mod_delayed_work(ucsi->connector[i].wq, &uwork->work, 0);
- mutex_unlock(&ucsi->connector[i].lock);
- destroy_workqueue(ucsi->connector[i].wq);
- }
-
- ucsi_unregister_partner(&ucsi->connector[i]);
- ucsi_unregister_altmodes(&ucsi->connector[i],
- UCSI_RECIPIENT_CON);
- ucsi_unregister_port_psy(&ucsi->connector[i]);
-
- usb_power_delivery_unregister_capabilities(ucsi->connector[i].port_sink_caps);
- ucsi->connector[i].port_sink_caps = NULL;
- usb_power_delivery_unregister_capabilities(ucsi->connector[i].port_source_caps);
- ucsi->connector[i].port_source_caps = NULL;
- usb_power_delivery_unregister(ucsi->connector[i].pd);
- ucsi->connector[i].pd = NULL;
- typec_unregister_port(ucsi->connector[i].port);
+ ucsi_unregister_port(&ucsi->connector[i]);
lockdep_unregister_key(&ucsi->connector[i].lock_key);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 294/337] media: i2c: imx219: Rename VTS to FRM_LENGTH
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (291 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 293/337] usb: typec: ucsi: Fix race condition and ordering in port unregistration Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 295/337] media: imx219: Fix maximum frame length in lines Greg Kroah-Hartman
` (50 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Dave Stevenson, Jai Luthra,
Sakari Ailus, Hans Verkuil, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jai Luthra <jai.luthra@ideasonboard.com>
[ Upstream commit 04f78503f99ae7e9887c7fe5e4bc54a7cfb10fe0 ]
The IMX219 datasheet refers to the vertical length + blanking as
FRM_LENGTH instead of VTS.
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Stable-dep-of: 2c4f1ba73543 ("media: imx219: Fix maximum frame length in lines")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/i2c/imx219.c | 31 +++++++++++++++----------------
1 file changed, 15 insertions(+), 16 deletions(-)
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -71,9 +71,8 @@
#define IMX219_EXPOSURE_MAX 65535
/* V_TIMING internal */
-#define IMX219_REG_VTS CCI_REG16(0x0160)
-#define IMX219_VTS_MAX 0xffff
-
+#define IMX219_REG_FRM_LENGTH_A CCI_REG16(0x0160)
+#define IMX219_FLL_MAX 0xffff
#define IMX219_VBLANK_MIN 32
/* HBLANK control - read only */
@@ -156,7 +155,7 @@ struct imx219_mode {
unsigned int height;
/* V-timing */
- unsigned int vts_def;
+ unsigned int fll_def;
};
static const struct cci_reg_sequence imx219_common_regs[] = {
@@ -315,25 +314,25 @@ static const struct imx219_mode supporte
/* 8MPix 15fps mode */
.width = 3280,
.height = 2464,
- .vts_def = 3526,
+ .fll_def = 3526,
},
{
/* 1080P 30fps cropped */
.width = 1920,
.height = 1080,
- .vts_def = 1763,
+ .fll_def = 1763,
},
{
/* 2x2 binned 30fps mode */
.width = 1640,
.height = 1232,
- .vts_def = 1763,
+ .fll_def = 1763,
},
{
/* 640x480 30fps mode */
.width = 640,
.height = 480,
- .vts_def = 1763,
+ .fll_def = 1763,
},
};
@@ -444,7 +443,7 @@ static int imx219_set_ctrl(struct v4l2_c
imx219->hflip->val | imx219->vflip->val << 1, &ret);
break;
case V4L2_CID_VBLANK:
- cci_write(imx219->regmap, IMX219_REG_VTS,
+ cci_write(imx219->regmap, IMX219_REG_FRM_LENGTH_A,
format->height + ctrl->val, &ret);
break;
case V4L2_CID_TEST_PATTERN_RED:
@@ -519,15 +518,15 @@ static int imx219_init_controls(struct i
/* Initial vblank/hblank/exposure parameters based on current mode */
imx219->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
V4L2_CID_VBLANK, IMX219_VBLANK_MIN,
- IMX219_VTS_MAX - mode->height, 1,
- mode->vts_def - mode->height);
+ IMX219_FLL_MAX - mode->height, 1,
+ mode->fll_def - mode->height);
hblank = IMX219_PPL_DEFAULT - mode->width;
imx219->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
V4L2_CID_HBLANK, hblank, hblank,
1, hblank);
if (imx219->hblank)
imx219->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
- exposure_max = mode->vts_def - 4;
+ exposure_max = mode->fll_def - 4;
exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
exposure_max : IMX219_EXPOSURE_DEFAULT;
imx219->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
@@ -878,12 +877,12 @@ static int imx219_set_pad_format(struct
/* Update limits and set FPS to default */
__v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN,
- IMX219_VTS_MAX - mode->height, 1,
- mode->vts_def - mode->height);
+ IMX219_FLL_MAX - mode->height, 1,
+ mode->fll_def - mode->height);
__v4l2_ctrl_s_ctrl(imx219->vblank,
- mode->vts_def - mode->height);
+ mode->fll_def - mode->height);
/* Update max exposure while meeting expected vblanking */
- exposure_max = mode->vts_def - 4;
+ exposure_max = mode->fll_def - 4;
exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
exposure_max : IMX219_EXPOSURE_DEFAULT;
__v4l2_ctrl_modify_range(imx219->exposure,
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 295/337] media: imx219: Fix maximum frame length in lines
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (292 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 294/337] media: i2c: imx219: Rename VTS to FRM_LENGTH Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 296/337] media: chips-media: wave5: Support CBP profile Greg Kroah-Hartman
` (49 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Sakari Ailus, Dave Stevenson,
Laurent Pinchart, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sakari Ailus <sakari.ailus@linux.intel.com>
[ Upstream commit 2c4f1ba7354312ad2d6e34e70a518a51a9344715 ]
The driver used the maximum frame length in lines value of 0xffff, but the
maximum appears to be 0xfffe instead. Fix it.
Fixes: 1283b3b8f82b ("media: i2c: Add driver for Sony IMX219 sensor")
Cc: stable@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/i2c/imx219.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -72,7 +72,7 @@
/* V_TIMING internal */
#define IMX219_REG_FRM_LENGTH_A CCI_REG16(0x0160)
-#define IMX219_FLL_MAX 0xffff
+#define IMX219_FLL_MAX 0xfffe
#define IMX219_VBLANK_MIN 32
/* HBLANK control - read only */
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 296/337] media: chips-media: wave5: Support CBP profile
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (293 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 295/337] media: imx219: Fix maximum frame length in lines Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 297/337] media: uapi: rkisp: Correct name version enum Greg Kroah-Hartman
` (48 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Jackson Lee, Nas Chung,
Brandon Brnich, Nicolas Dufresne, Hans Verkuil, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jackson Lee <jackson.lee@chipsnmedia.com>
[ Upstream commit f8505f9d6b223a26854003bfdba1a0772457886d ]
Constrained Baseline Profile (CBP) and Baseline Profile (BP) have been
treated as the same.
Introduce the ability to differentiate between the two.
Fixes: 9707a6254a8a ("media: chips-media: wave5: Add the v4l2 layer")
Cc: stable@vger.kernel.org
Signed-off-by: Jackson Lee <jackson.lee@chipsnmedia.com>
Signed-off-by: Nas Chung <nas.chung@chipsnmedia.com>
Tested-by: Brandon Brnich <b-brnich@ti.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/platform/chips-media/wave5/wave5-hw.c | 3 +++
drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c | 5 ++++-
drivers/media/platform/chips-media/wave5/wave5-vpuapi.h | 1 +
3 files changed, 8 insertions(+), 1 deletion(-)
--- a/drivers/media/platform/chips-media/wave5/wave5-hw.c
+++ b/drivers/media/platform/chips-media/wave5/wave5-hw.c
@@ -1753,6 +1753,9 @@ int wave5_vpu_enc_init_seq(struct vpu_in
(p_param->skip_intra_trans << 25) |
(p_param->strong_intra_smooth_enable << 27) |
(p_param->en_still_picture << 30);
+ else if (inst->std == W_AVC_ENC)
+ reg_val |= (p_param->constraint_set1_flag << 29);
+
vpu_write_reg(inst->dev, W5_CMD_ENC_SEQ_SPS_PARAM, reg_val);
reg_val = (p_param->lossless_enable) |
--- a/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
+++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c
@@ -906,6 +906,8 @@ static int wave5_vpu_enc_s_ctrl(struct v
case V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE:
inst->enc_param.profile = H264_PROFILE_BP;
inst->bit_depth = 8;
+ if (ctrl->val == V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE)
+ inst->enc_param.constraint_set1_flag = 1;
break;
case V4L2_MPEG_VIDEO_H264_PROFILE_MAIN:
inst->enc_param.profile = H264_PROFILE_MP;
@@ -1168,6 +1170,7 @@ static void wave5_set_enc_openparam(stru
open_param->wave_param.intra_period = input.avc_idr_period;
}
} else {
+ open_param->wave_param.constraint_set1_flag = input.constraint_set1_flag;
open_param->wave_param.avc_idr_period = input.avc_idr_period;
}
open_param->wave_param.entropy_coding_mode = input.entropy_coding_mode;
@@ -1631,7 +1634,7 @@ static int wave5_vpu_open_enc(struct fil
-6, 6, 1, 0);
v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM,
- 0, 1, 1, 1);
+ 0, 1, 1, 0);
v4l2_ctrl_new_std(v4l2_ctrl_hdl, &wave5_vpu_enc_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION,
0, 1, 1, 0);
--- a/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h
+++ b/drivers/media/platform/chips-media/wave5/wave5-vpuapi.h
@@ -568,6 +568,7 @@ struct enc_wave_param {
u32 lambda_scaling_enable: 1; /* enable lambda scaling using custom GOP */
u32 transform8x8_enable: 1; /* enable 8x8 intra prediction and 8x8 transform */
u32 mb_level_rc_enable: 1; /* enable MB-level rate control */
+ u32 constraint_set1_flag: 1; /* enable CBP */
};
struct enc_open_param {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 297/337] media: uapi: rkisp: Correct name version enum
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (294 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 296/337] media: chips-media: wave5: Support CBP profile Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 298/337] wifi: brcmfmac: drain bus_reset work on device removal Greg Kroah-Hartman
` (47 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Niklas Söderlund,
Laurent Pinchart, Hans Verkuil, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
[ Upstream commit c4c01c4fd4a3916ffdfb35ad9f511c48e289f51c ]
The name of the enum to hold the mapping of parameter buffer versions
have a typo in the name, correct it. While this is a uAPI header the
impact should be minimal as the enum is only used as a collection for
the one version number supported.
Fixes: e9d05e9d5db1 ("media: uapi: rkisp1-config: Add extensible params format")
Cc: stable@vger.kernel.org
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260501190339.3449193-1-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
[ Adjusted context to keep the tree's `RKISP1_EXT_PARAM_BUFFER_V1 = 1` initializer instead of upstream's `V4L2_ISP_PARAMS_VERSION_V1`, which does not exist in this tree. ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/uapi/linux/rkisp1-config.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/include/uapi/linux/rkisp1-config.h
+++ b/include/uapi/linux/rkisp1-config.h
@@ -1487,11 +1487,11 @@ struct rkisp1_ext_params_compand_curve_c
sizeof(struct rkisp1_ext_params_compand_curve_config))
/**
- * enum rksip1_ext_param_buffer_version - RkISP1 extensible parameters version
+ * enum rkisp1_ext_param_buffer_version - RkISP1 extensible parameters version
*
* @RKISP1_EXT_PARAM_BUFFER_V1: First version of RkISP1 extensible parameters
*/
-enum rksip1_ext_param_buffer_version {
+enum rkisp1_ext_param_buffer_version {
RKISP1_EXT_PARAM_BUFFER_V1 = 1,
};
@@ -1563,7 +1563,7 @@ enum rksip1_ext_param_buffer_version {
* +---------------------------------------------------------------------+
*
* @version: The RkISP1 extensible parameters buffer version, see
- * :c:type:`rksip1_ext_param_buffer_version`
+ * :c:type:`rkisp1_ext_param_buffer_version`
* @data_size: The RkISP1 configuration data effective size, excluding this
* header
* @data: The RkISP1 extensible configuration data blocks
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 298/337] wifi: brcmfmac: drain bus_reset work on device removal
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (295 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 297/337] media: uapi: rkisp: Correct name version enum Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 299/337] wifi: ath6kl: fix use-after-free in aggr_reset_state() Greg Kroah-Hartman
` (46 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Fan Wu, Arend van Spriel,
Johannes Berg, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Fan Wu <fanwu01@zju.edu.cn>
[ Upstream commit 43b25879f004c98defa2776bedc6ca4763c51945 ]
brcmf_fw_crashed() and the debugfs "reset" entry both schedule
drvr->bus_reset, whose callback recovers drvr through container_of()
and dereferences it. The removal path frees drvr (brcmf_free ->
wiphy_free) without draining the work, so a bus_reset callback pending
or running during removal can outlive drvr.
Cancellation cannot live in brcmf_detach() or brcmf_free(): the work
callback reaches teardown through the bus .reset op (PCIe
brcmf_pcie_reset -> brcmf_detach; SDIO brcmf_sdio_bus_reset ->
brcmf_sdiod_remove -> brcmf_free), so cancelling there would wait for
the running work and deadlock.
Add a per-bus mutex (bus_reset_lock) and route all arming through
brcmf_bus_schedule_reset(), which under the lock skips when the bus is
marked removing. Each bus remove entry calls
brcmf_bus_cancel_reset_work(), which under the same lock sets removing
and cancels the work. Holding the mutex across cancel_work_sync() makes
the set-removing + drain step atomic. Every producer reaches the arming
path from process context -- the PCIe firmware-halt notification runs in
the threaded IRQ handler (brcmf_pcie_isr_thread) and the SDIO hostmail
path runs from the data workqueue -- so the mutex is taken only in
sleepable contexts. Where applicable the remove entry first stops the
firmware-crash producer: on PCIe mask the mailbox and synchronize_irq;
on SDIO unregister the bus interrupt and cancel the data worker, which
also reports firmware halts through brcmf_fw_crashed(). The mutex is
initialized at bus allocation. The SDIO suspend power-off path frees
drvr through the same brcmf_sdiod_remove() and takes the same lock;
resume re-allows the work only on a successful re-probe.
Also guard brcmf_fw_crashed() against a NULL bus_if/drvr: it can fire
before brcmf_attach() wires up drvr, and it dereferences drvr
(bphy_err/brcmf_dev_coredump) before reaching the arming gate.
The bus_reset work is shared across buses, so the drain is applied to
every remove path: PCIe (the .reset op introduced by the Fixes commit),
SDIO (arms the same work through brcmf_fw_crashed()), and USB (via the
debugfs "reset" entry). cancel_work_sync() drains a running or pending
bus_reset work item before removal frees drvr, and patch 1/2 makes the
scratch-buffer release safe when reset teardown has already released
those DMA buffers.
This patch fixes the lifetime of the bus_reset work item itself. It does
not attempt to address the separate, pre-existing lifetime of the
asynchronous firmware completion started by the PCIe reset path. That
callback needs its own lifetime/ownership protocol and is being tracked
separately.
This issue was found by an in-house static analysis tool.
Fixes: 4684997d9eea ("brcmfmac: reset PCIe bus on a firmware crash")
Cc: stable@vger.kernel.org
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Assisted-by: Codex:gpt-5.6
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260718024353.3147201-3-fanwu01@zju.edu.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 13 +++
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h | 6 +
drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c | 46 ++++++++++++--
drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 6 +
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 6 +
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h | 1
drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 3
7 files changed, 77 insertions(+), 4 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -1064,6 +1064,7 @@ static int brcmf_ops_sdio_probe(struct s
bus_if = kzalloc(sizeof(*bus_if), GFP_KERNEL);
if (!bus_if)
return -ENOMEM;
+ mutex_init(&bus_if->bus_reset_lock);
sdiodev = kzalloc(sizeof(*sdiodev), GFP_KERNEL);
if (!sdiodev) {
kfree(bus_if);
@@ -1125,6 +1126,14 @@ static void brcmf_ops_sdio_remove(struct
if (func->num != 1)
return;
+ /* Drain bus_reset before the shared brcmf_sdiod_remove()
+ * teardown, which the SDIO reset callback also reaches. The
+ * data worker can arm bus_reset via brcmf_fw_crashed(); cancel
+ * it first.
+ */
+ brcmf_sdio_cancel_datawork(sdiodev->bus);
+ brcmf_bus_cancel_reset_work(bus_if);
+
/* only proceed with rest of cleanup if func 1 */
brcmf_sdiod_remove(sdiodev);
@@ -1199,6 +1208,8 @@ static int brcmf_ops_sdio_suspend(struct
} else {
/* power will be cut so remove device, probe again in resume */
brcmf_sdiod_intr_unregister(sdiodev);
+ brcmf_sdio_cancel_datawork(sdiodev->bus);
+ brcmf_bus_cancel_reset_work(bus_if);
ret = brcmf_sdiod_remove(sdiodev);
if (ret)
brcmf_err("Failed to remove device on suspend\n");
@@ -1224,6 +1235,8 @@ static int brcmf_ops_sdio_resume(struct
ret = brcmf_sdiod_probe(sdiodev);
if (ret)
brcmf_err("Failed to probe device on resume\n");
+ else
+ brcmf_bus_allow_reset_work(bus_if);
} else {
if (sdiodev->wowl_enabled && sdiodev->settings->bus.sdio.oob_irq_supported)
disable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
@@ -9,6 +9,7 @@
#include <linux/kernel.h>
#include <linux/firmware.h>
#include <linux/device.h>
+#include <linux/mutex.h>
#include "debug.h"
/* IDs of the 6 default common rings of msgbuf protocol */
@@ -179,6 +180,8 @@ struct brcmf_bus {
enum brcmf_fwvendor fwvid;
bool always_use_fws_queue;
bool wowl_supported;
+ bool removing; /* device removal in progress; quiesce async work */
+ struct mutex bus_reset_lock;
const struct brcmf_bus_ops *ops;
struct brcmf_bus_msgbuf *msgbuf;
@@ -186,6 +189,9 @@ struct brcmf_bus {
struct list_head list;
};
+void brcmf_bus_cancel_reset_work(struct brcmf_bus *bus_if);
+void brcmf_bus_allow_reset_work(struct brcmf_bus *bus_if);
+
/*
* callback wrappers
*/
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1162,6 +1162,35 @@ static int brcmf_revinfo_read(struct seq
return 0;
}
+/*
+ * Serialize arming from debugfs reset and brcmf_fw_crashed() against
+ * teardown. The remove path sets ->removing and drains the work while
+ * holding bus_reset_lock, so a racing armer is either drained or skips it.
+ */
+static void brcmf_bus_schedule_reset(struct brcmf_bus *bus_if)
+{
+ mutex_lock(&bus_if->bus_reset_lock);
+ if (bus_if->drvr && bus_if->drvr->bus_reset.func && !bus_if->removing)
+ schedule_work(&bus_if->drvr->bus_reset);
+ mutex_unlock(&bus_if->bus_reset_lock);
+}
+
+void brcmf_bus_cancel_reset_work(struct brcmf_bus *bus_if)
+{
+ mutex_lock(&bus_if->bus_reset_lock);
+ bus_if->removing = true;
+ if (bus_if->drvr)
+ cancel_work_sync(&bus_if->drvr->bus_reset);
+ mutex_unlock(&bus_if->bus_reset_lock);
+}
+
+void brcmf_bus_allow_reset_work(struct brcmf_bus *bus_if)
+{
+ mutex_lock(&bus_if->bus_reset_lock);
+ bus_if->removing = false;
+ mutex_unlock(&bus_if->bus_reset_lock);
+}
+
static void brcmf_core_bus_reset(struct work_struct *work)
{
struct brcmf_pub *drvr = container_of(work, struct brcmf_pub,
@@ -1182,7 +1211,7 @@ static ssize_t bus_reset_write(struct fi
if (value != 1)
return -EINVAL;
- schedule_work(&drvr->bus_reset);
+ brcmf_bus_schedule_reset(drvr->bus_if);
return count;
}
@@ -1410,14 +1439,23 @@ void brcmf_dev_coredump(struct device *d
void brcmf_fw_crashed(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_pub *drvr = bus_if->drvr;
+ struct brcmf_pub *drvr;
+
+ /* May fire before brcmf_attach() wires up drvr, or after removal
+ * has cleared it; guard the derefs below (and the arming gate in
+ * brcmf_bus_schedule_reset() already checks drvr/->removing).
+ */
+ if (!bus_if)
+ return;
+ drvr = bus_if->drvr;
+ if (!drvr)
+ return;
bphy_err(drvr, "Firmware has halted or crashed\n");
brcmf_dev_coredump(dev);
- if (drvr->bus_reset.func)
- schedule_work(&drvr->bus_reset);
+ brcmf_bus_schedule_reset(bus_if);
}
void brcmf_detach(struct device *dev)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -2462,6 +2462,7 @@ brcmf_pcie_probe(struct pci_dev *pdev, c
ret = -ENOMEM;
goto fail;
}
+ mutex_init(&bus->bus_reset_lock);
bus->msgbuf = kzalloc(sizeof(*bus->msgbuf), GFP_KERNEL);
if (!bus->msgbuf) {
ret = -ENOMEM;
@@ -2547,6 +2548,11 @@ brcmf_pcie_remove(struct pci_dev *pdev)
if (devinfo->ci)
brcmf_pcie_intr_disable(devinfo);
+ if (devinfo->irq_allocated)
+ synchronize_irq(pdev->irq);
+
+ brcmf_bus_cancel_reset_work(bus);
+
brcmf_detach(&pdev->dev);
brcmf_free(&pdev->dev);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -4550,6 +4550,12 @@ fail:
return NULL;
}
+void brcmf_sdio_cancel_datawork(struct brcmf_sdio *bus)
+{
+ if (bus)
+ cancel_work_sync(&bus->datawork);
+}
+
/* Detach and free everything */
void brcmf_sdio_remove(struct brcmf_sdio *bus)
{
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h
@@ -361,6 +361,7 @@ int brcmf_sdiod_remove(struct brcmf_sdio
struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev);
void brcmf_sdio_remove(struct brcmf_sdio *bus);
void brcmf_sdio_isr(struct brcmf_sdio *bus, bool in_isr);
+void brcmf_sdio_cancel_datawork(struct brcmf_sdio *bus);
void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, bool active);
void brcmf_sdio_wowl_config(struct device *dev, bool enabled);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
@@ -1254,6 +1254,7 @@ static int brcmf_usb_probe_cb(struct brc
ret = -ENOMEM;
goto fail;
}
+ mutex_init(&bus->bus_reset_lock);
bus->dev = dev;
bus_pub->bus = bus;
@@ -1320,6 +1321,8 @@ brcmf_usb_disconnect_cb(struct brcmf_usb
return;
brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo);
+ brcmf_bus_cancel_reset_work(devinfo->bus_pub.bus);
+
brcmf_detach(devinfo->dev);
brcmf_free(devinfo->dev);
kfree(devinfo->bus_pub.bus);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 299/337] wifi: ath6kl: fix use-after-free in aggr_reset_state()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (296 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 298/337] wifi: brcmfmac: drain bus_reset work on device removal Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 300/337] wifi: brcmfmac: fix 43752 SDIO FWVID incorrectly labelled as Cypress (CYW) Greg Kroah-Hartman
` (45 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Daniel Hodges,
Vasanthakumar Thiagarajan, Jeff Johnson, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Daniel Hodges <git@danielhodges.dev>
[ Upstream commit ba7debb4dd6427386862220e8335a53a4bfc235d ]
The aggr_reset_state() function uses timer_delete() (non-synchronous)
for the aggregation timer before proceeding to delete TID state and
before the structure is freed by callers like aggr_module_destroy().
If the timer callback (aggr_timeout) is executing when aggr_reset_state()
is called, the callback will continue to access aggr_conn fields like
rx_tid[] and stat[] which may be freed immediately after by
kfree(aggr_info->aggr_conn) in aggr_module_destroy().
Additionally, the timer callback can re-arm itself via mod_timer() while
aggr_reset_state() is running, creating a more complex race condition.
Use timer_delete_sync() instead to ensure any running timer callback
has completed before returning.
Fixes: bdcd81707973 ("Add ath6kl cleaned up driver")
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Hodges <git@danielhodges.dev>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20260206185207.30098-1-git@danielhodges.dev
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/ath/ath6kl/txrx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath6kl/txrx.c
+++ b/drivers/net/wireless/ath/ath6kl/txrx.c
@@ -1829,7 +1829,7 @@ void aggr_reset_state(struct aggr_info_c
return;
if (aggr_conn->timer_scheduled) {
- del_timer(&aggr_conn->timer);
+ timer_delete_sync(&aggr_conn->timer);
aggr_conn->timer_scheduled = false;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 300/337] wifi: brcmfmac: fix 43752 SDIO FWVID incorrectly labelled as Cypress (CYW)
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (297 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 299/337] wifi: ath6kl: fix use-after-free in aggr_reset_state() Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 301/337] wifi: brcmfmac: set F2 blocksize to 256 for BCM43752 Greg Kroah-Hartman
` (44 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Gokul Sivakumar, Arend van Spriel,
Johannes Berg, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gokul Sivakumar <gokulkumar.sivakumar@infineon.com>
[ Upstream commit 74e2ef72bd4b25ce21c8f309d4f5b91b5df9ff5b ]
Cypress(Infineon) is not the vendor for this 43752 SDIO WLAN chip, and so
has not officially released any firmware binary for it. It is incorrect to
maintain this WLAN chip with firmware vendor ID as "CYW". So relabel the
chip's firmware Vendor ID as "WCC" as suggested by the maintainer.
Fixes: d2587c57ffd8 ("brcmfmac: add 43752 SDIO ids and initialization")
Fixes: f74f1ec22dc2 ("wifi: brcmfmac: add support for Cypress firmware api")
Signed-off-by: Gokul Sivakumar <gokulkumar.sivakumar@infineon.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20250724101136.6691-1-gokulkumar.sivakumar@infineon.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stable-dep-of: 29ab31f3f271 ("wifi: brcmfmac: set F2 blocksize to 256 for BCM43752")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 2 +-
drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c | 4 ++--
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 8 ++++----
drivers/net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h | 2 +-
include/linux/mmc/sdio_ids.h | 2 +-
5 files changed, 9 insertions(+), 9 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -991,9 +991,9 @@ static const struct sdio_device_id brcmf
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354, WCC),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4356, WCC),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4359, WCC),
+ BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43752, WCC),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373, CYW),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43012, CYW),
- BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43752, CYW),
BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_89359, CYW),
CYW_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_CYPRESS_43439, CYW),
{ /* end: all zeroes */ }
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c
@@ -738,7 +738,7 @@ static u32 brcmf_chip_tcm_rambase(struct
case BRCM_CC_4364_CHIP_ID:
case CY_CC_4373_CHIP_ID:
return 0x160000;
- case CY_CC_43752_CHIP_ID:
+ case BRCM_CC_43752_CHIP_ID:
case BRCM_CC_4377_CHIP_ID:
return 0x170000;
case BRCM_CC_4378_CHIP_ID:
@@ -1465,7 +1465,7 @@ bool brcmf_chip_sr_capable(struct brcmf_
reg = chip->ops->read32(chip->ctx, addr);
return (reg & CC_SR_CTL0_ENABLE_MASK) != 0;
case BRCM_CC_4359_CHIP_ID:
- case CY_CC_43752_CHIP_ID:
+ case BRCM_CC_43752_CHIP_ID:
case CY_CC_43012_CHIP_ID:
addr = CORE_CC_REG(pmu->base, retention_ctl);
reg = chip->ops->read32(chip->ctx, addr);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -654,10 +654,10 @@ static const struct brcmf_firmware_mappi
BRCMF_FW_ENTRY(BRCM_CC_4354_CHIP_ID, 0xFFFFFFFF, 4354),
BRCMF_FW_ENTRY(BRCM_CC_4356_CHIP_ID, 0xFFFFFFFF, 4356),
BRCMF_FW_ENTRY(BRCM_CC_4359_CHIP_ID, 0xFFFFFFFF, 4359),
+ BRCMF_FW_ENTRY(BRCM_CC_43752_CHIP_ID, 0xFFFFFFFF, 43752),
BRCMF_FW_ENTRY(CY_CC_4373_CHIP_ID, 0xFFFFFFFF, 4373),
BRCMF_FW_ENTRY(CY_CC_43012_CHIP_ID, 0xFFFFFFFF, 43012),
BRCMF_FW_ENTRY(CY_CC_43439_CHIP_ID, 0xFFFFFFFF, 43439),
- BRCMF_FW_ENTRY(CY_CC_43752_CHIP_ID, 0xFFFFFFFF, 43752)
};
#define TXCTL_CREDITS 2
@@ -3425,8 +3425,8 @@ err:
static bool brcmf_sdio_aos_no_decode(struct brcmf_sdio *bus)
{
- if (bus->ci->chip == CY_CC_43012_CHIP_ID ||
- bus->ci->chip == CY_CC_43752_CHIP_ID)
+ if (bus->ci->chip == BRCM_CC_43752_CHIP_ID ||
+ bus->ci->chip == CY_CC_43012_CHIP_ID)
return true;
else
return false;
@@ -4274,8 +4274,8 @@ static void brcmf_sdio_firmware_callback
bus->hostintmask, NULL);
switch (sdiod->func1->device) {
+ case SDIO_DEVICE_ID_BROADCOM_43752:
case SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373:
- case SDIO_DEVICE_ID_BROADCOM_CYPRESS_43752:
brcmf_dbg(INFO, "set F2 watermark to 0x%x*4 bytes\n",
CY_4373_F2_WATERMARK);
brcmf_sdiod_writeb(sdiod, SBSDIO_WATERMARK,
--- a/drivers/net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h
+++ b/drivers/net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h
@@ -52,13 +52,13 @@
#define BRCM_CC_43664_CHIP_ID 43664
#define BRCM_CC_43666_CHIP_ID 43666
#define BRCM_CC_4371_CHIP_ID 0x4371
+#define BRCM_CC_43752_CHIP_ID 43752
#define BRCM_CC_4377_CHIP_ID 0x4377
#define BRCM_CC_4378_CHIP_ID 0x4378
#define BRCM_CC_4387_CHIP_ID 0x4387
#define CY_CC_4373_CHIP_ID 0x4373
#define CY_CC_43012_CHIP_ID 43012
#define CY_CC_43439_CHIP_ID 43439
-#define CY_CC_43752_CHIP_ID 43752
/* USB Device IDs */
#define BRCM_USB_43143_DEVICE_ID 0xbd1e
--- a/include/linux/mmc/sdio_ids.h
+++ b/include/linux/mmc/sdio_ids.h
@@ -76,7 +76,7 @@
#define SDIO_DEVICE_ID_BROADCOM_43430 0xa9a6
#define SDIO_DEVICE_ID_BROADCOM_43439 0xa9af
#define SDIO_DEVICE_ID_BROADCOM_43455 0xa9bf
-#define SDIO_DEVICE_ID_BROADCOM_CYPRESS_43752 0xaae8
+#define SDIO_DEVICE_ID_BROADCOM_43752 0xaae8
#define SDIO_VENDOR_ID_CYPRESS 0x04b4
#define SDIO_DEVICE_ID_BROADCOM_CYPRESS_43439 0xbd3d
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 301/337] wifi: brcmfmac: set F2 blocksize to 256 for BCM43752
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (298 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 300/337] wifi: brcmfmac: fix 43752 SDIO FWVID incorrectly labelled as Cypress (CYW) Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 302/337] ALSA: hda: codecs: hdmi: disable keep-alive before audio format change Greg Kroah-Hartman
` (43 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, LiangCheng Wang, Arend van Spriel,
Johannes Berg, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: LiangCheng Wang <zaq14760@gmail.com>
[ Upstream commit 29ab31f3f27157648f2f7e6d5e1fd9792fdf0614 ]
The BCM43752 is not reliable with the default 512-byte SDIO function 2
block size: on an i.MX8MP board with an AMPAK AP6275S module at
SDR104 / 200 MHz, an iperf TX stress test kills WLAN within seconds:
mmc_submit_one: CMD53 sg block write failed -84
brcmf_sdio_dpc: failed backplane access over SDIO, halting operation
Commit d2587c57ffd8 ("brcmfmac: add 43752 SDIO ids and initialization")
set up the 43752 like the 4373 for the F2 watermark but missed the F2
block size, which the 4373 limits to 256 bytes. The vendor driver
(bcmdhd) also programs a 256-byte F2 block size for this chip and runs
the same hardware without errors.
Group the 43752 with the 4373, matching the F2 watermark handling.
With this change a 10-minute bidirectional iperf3 soak completes with
zero SDIO errors at ~270 Mbit/s in each direction.
Backporting note: kernels before v6.18 name this id
SDIO_DEVICE_ID_BROADCOM_CYPRESS_43752, so on those trees the case
label added by this patch must be adjusted to that name. Cherry-picking
the rename commit 74e2ef72bd4b ("wifi: brcmfmac: fix 43752 SDIO FWVID
incorrectly labelled as Cypress (CYW)") first is not a clean
alternative: on trees before v6.17 its context collides with the 43751
additions, and trees before v6.2 lack the FWVID framework it touches.
Fixes: d2587c57ffd8 ("brcmfmac: add 43752 SDIO ids and initialization")
Cc: stable@vger.kernel.org # see patch description, needs adjustments for <= 6.17
Signed-off-by: LiangCheng Wang <zaq14760@gmail.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Link: https://patch.msgid.link/20260715-b43752-f2-blksz-v2-1-f9be49856050@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -906,6 +906,7 @@ int brcmf_sdiod_probe(struct brcmf_sdio_
return ret;
}
switch (sdiodev->func2->device) {
+ case SDIO_DEVICE_ID_BROADCOM_43752:
case SDIO_DEVICE_ID_BROADCOM_CYPRESS_4373:
f2_blksz = SDIO_4373_FUNC2_BLOCKSIZE;
break;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 302/337] ALSA: hda: codecs: hdmi: disable keep-alive before audio format change
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (299 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 301/337] wifi: brcmfmac: set F2 blocksize to 256 for BCM43752 Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 303/337] mptcp: pm: avoid code duplication to lookup endp Greg Kroah-Hartman
` (42 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Alexander Kaplan, Kai Vehmanen,
Takashi Iwai, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kai Vehmanen <kai.vehmanen@linux.intel.com>
[ Upstream commit a3d6d3cedfe87bbd5a677d52b22ac20d28e59cf8 ]
When a keep-alive (KAE) silent stream is active on an Intel HDMI/DP
codec, opening a real PCM stream reprograms the converter format and the
audio infoframe in snd_hda_hdmi_generic_pcm_prepare(). Part of that
reprogramming - the converter channel count and the channel mapping in
snd_hda_hdmi_setup_audio_infoframe() - is not safe to do while a
keep-alive stream is active. This is most visible when switching to a
multichannel PCM configuration, where the active channel count actually
changes. In that case the newly opened PCM stream plays no sound.
Add an optional hdmi_ops .prepare hook, called at the start of the
PCM prepare sequence (before the format and infoframe are touched), and
implement it for HSW+ to release keep-alive. Keep-alive is then
re-enabled as before once the new stream has been set up, in the
setup_stream op.
Fixes: 15175a4f2bbb ("ALSA: hda/hdmi: add keep-alive support for ADL-P and DG2")
Reported-by: Alexander Kaplan <alexander.kaplan@sms-medipool.de>
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/8412
Tested-by: Alexander Kaplan <alexander.kaplan@sms-medipool.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://patch.msgid.link/20260715180610.1371243-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
[ adapted three hunks from the post-6.12 split files (hdmi.c/hdmi_local.h/intelhdmi.c) back into the monolithic sound/pci/hda/patch_hdmi.c, with the prepare hook un-indented one level since 6.12 uses plain mutex_lock() instead of scoped_guard() ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/pci/hda/patch_hdmi.c | 48 +++++++++++++++++++++++++++++++++++++++------
1 file changed, 42 insertions(+), 6 deletions(-)
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -111,6 +111,15 @@ struct hdmi_ops {
hda_nid_t pin_nid, int dev_id, u32 stream_tag,
int format);
+ /*
+ * Optional hook invoked at the beginning of the PCM prepare
+ * sequence, before the audio infoframe and stream format are
+ * (re)programmed. Used to disable keep-alive / silent stream so
+ * that the format change is not done while keep-alive is active.
+ */
+ void (*prepare)(struct hda_codec *codec,
+ struct hdmi_spec_per_pin *per_pin);
+
void (*pin_cvt_fixup)(struct hda_codec *codec,
struct hdmi_spec_per_pin *per_pin,
hda_nid_t cvt_nid);
@@ -2134,6 +2143,9 @@ static int generic_hdmi_playback_pcm_pre
per_pin->channels = substream->runtime->channels;
per_pin->setup = true;
+ if (spec->ops.prepare)
+ spec->ops.prepare(codec, per_pin);
+
if (get_wcaps(codec, cvt_nid) & AC_WCAP_STRIPE) {
stripe = snd_hdac_get_stream_stripe_ctl(&codec->bus->core,
substream);
@@ -2901,6 +2913,28 @@ static void register_i915_notifier(struc
codec->relaxed_resume = 1;
}
+/*
+ * prepare ops override for HSW+
+ *
+ * Disable keep-alive before the converter format and audio infoframe are
+ * reprogrammed by the PCM prepare sequence. Changing the audio format (e.g.
+ * the channel count when switching to multichannel PCM) while a keep-alive
+ * stream is active is not safe, so release keep-alive here, early in the
+ * sequence. It is re-enabled once the new stream has been set up, in
+ * i915_hsw_setup_stream().
+ */
+static void i915_hsw_prepare(struct hda_codec *codec,
+ struct hdmi_spec_per_pin *per_pin)
+{
+ struct hdmi_spec *spec = codec->spec;
+
+ if (spec->silent_stream_type == SILENT_STREAM_KAE && per_pin->silent_stream) {
+ silent_stream_set_kae(codec, per_pin, false);
+ /* wait for pending transfers in codec to clear */
+ usleep_range(100, 200);
+ }
+}
+
/* setup_stream ops override for HSW+ */
static int i915_hsw_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid,
hda_nid_t pin_nid, int dev_id, u32 stream_tag,
@@ -2918,15 +2952,16 @@ static int i915_hsw_setup_stream(struct
haswell_verify_D0(codec, cvt_nid, pin_nid);
- if (spec->silent_stream_type == SILENT_STREAM_KAE && per_pin && per_pin->silent_stream) {
- silent_stream_set_kae(codec, per_pin, false);
- /* wait for pending transfers in codec to clear */
- usleep_range(100, 200);
- }
-
res = hdmi_setup_stream(codec, cvt_nid, pin_nid, dev_id,
stream_tag, format);
+ /*
+ * Keep-alive was disabled in i915_hsw_prepare(), re-enable it now.
+ * The pin lookup above resolves to the same per_pin that prepare
+ * used (pin_nid comes from that per_pin), so this stays balanced; a
+ * NULL per_pin only occurs on a lookup failure that also implies no
+ * active keep-alive stream to restore.
+ */
if (spec->silent_stream_type == SILENT_STREAM_KAE && per_pin && per_pin->silent_stream) {
usleep_range(100, 200);
silent_stream_set_kae(codec, per_pin, true);
@@ -3100,6 +3135,7 @@ static int intel_hsw_common_init(struct
codec->depop_delay = 0;
codec->auto_runtime_pm = 1;
+ spec->ops.prepare = i915_hsw_prepare;
spec->ops.setup_stream = i915_hsw_setup_stream;
spec->ops.pin_cvt_fixup = i915_pin_cvt_fixup;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 303/337] mptcp: pm: avoid code duplication to lookup endp
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (300 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 302/337] ALSA: hda: codecs: hdmi: disable keep-alive before audio format change Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 304/337] mptcp: add mptcp_userspace_pm_lookup_addr helper Greg Kroah-Hartman
` (41 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthieu Baerts (NGI0), Geliang Tang,
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Geliang Tang <tanggeliang@kylinos.cn>
[ Upstream commit 1d7fa6ceb91fddbe38cae3521d5d1075bce6a00e ]
The helper __lookup_addr() can be used in mptcp_pm_nl_get_local_id()
and mptcp_pm_nl_is_backup() to simplify the code, and avoid code
duplication.
Co-developed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241115-net-next-mptcp-pm-lockless-dump-v1-2-f4a1bcb4ca2c@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 9bc6d5e4ca9f ("mptcp: pm: userspace: fix use-after-free in get_local_id")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mptcp/pm_netlink.c | 20 ++++++--------------
1 file changed, 6 insertions(+), 14 deletions(-)
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -1278,17 +1278,13 @@ int mptcp_pm_nl_get_local_id(struct mptc
{
struct mptcp_pm_addr_entry *entry;
struct pm_nl_pernet *pernet;
- int ret = -1;
+ int ret;
pernet = pm_nl_get_pernet_from_msk(msk);
rcu_read_lock();
- list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {
- if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port)) {
- ret = entry->addr.id;
- break;
- }
- }
+ entry = __lookup_addr(pernet, skc);
+ ret = entry ? entry->addr.id : -1;
rcu_read_unlock();
if (ret >= 0)
return ret;
@@ -1315,15 +1311,11 @@ bool mptcp_pm_nl_is_backup(struct mptcp_
{
struct pm_nl_pernet *pernet = pm_nl_get_pernet_from_msk(msk);
struct mptcp_pm_addr_entry *entry;
- bool backup = false;
+ bool backup;
rcu_read_lock();
- list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {
- if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port)) {
- backup = !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
- break;
- }
- }
+ entry = __lookup_addr(pernet, skc);
+ backup = entry && !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
rcu_read_unlock();
return backup;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 304/337] mptcp: add mptcp_userspace_pm_lookup_addr helper
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (301 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 303/337] mptcp: pm: avoid code duplication to lookup endp Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 305/337] mptcp: pm: use addr entry for get_local_id Greg Kroah-Hartman
` (40 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Geliang Tang, Matthieu Baerts (NGI0),
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Geliang Tang <tanggeliang@kylinos.cn>
[ Upstream commit e7b4083b90b7213902124d13fd1ed808360e32b1 ]
Like __lookup_addr() helper in pm_netlink.c, a new helper
mptcp_userspace_pm_lookup_addr() is also defined in pm_userspace.c.
It looks up the corresponding mptcp_pm_addr_entry address in
userspace_pm_local_addr_list through the passed "addr" parameter
and returns the found address entry.
This helper can be used in mptcp_userspace_pm_delete_local_addr(),
mptcp_userspace_pm_set_flags(), mptcp_userspace_pm_get_local_id()
and mptcp_userspace_pm_is_backup() to simplify the code.
Please note that with this change now list_for_each_entry() is used in
mptcp_userspace_pm_append_new_local_addr(), not list_for_each_entry_safe(),
but that's OK to do so because mptcp_userspace_pm_lookup_addr() only
returns an entry from the list, the list hasn't been modified here.
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241213-net-next-mptcp-pm-misc-cleanup-v1-1-ddb6d00109a8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 9bc6d5e4ca9f ("mptcp: pm: userspace: fix use-after-free in get_local_id")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mptcp/pm_userspace.c | 71 +++++++++++++++++++++++------------------------
1 file changed, 36 insertions(+), 35 deletions(-)
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -26,6 +26,19 @@ void mptcp_free_local_addr_list(struct m
}
}
+static struct mptcp_pm_addr_entry *
+mptcp_userspace_pm_lookup_addr(struct mptcp_sock *msk,
+ const struct mptcp_addr_info *addr)
+{
+ struct mptcp_pm_addr_entry *entry;
+
+ list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) {
+ if (mptcp_addresses_equal(&entry->addr, addr, false))
+ return entry;
+ }
+ return NULL;
+}
+
static int mptcp_userspace_pm_append_new_local_addr(struct mptcp_sock *msk,
struct mptcp_pm_addr_entry *entry,
bool needs_id)
@@ -90,22 +103,20 @@ append_err:
static int mptcp_userspace_pm_delete_local_addr(struct mptcp_sock *msk,
struct mptcp_pm_addr_entry *addr)
{
- struct mptcp_pm_addr_entry *entry, *tmp;
struct sock *sk = (struct sock *)msk;
+ struct mptcp_pm_addr_entry *entry;
- list_for_each_entry_safe(entry, tmp, &msk->pm.userspace_pm_local_addr_list, list) {
- if (mptcp_addresses_equal(&entry->addr, &addr->addr, false)) {
- /* TODO: a refcount is needed because the entry can
- * be used multiple times (e.g. fullmesh mode).
- */
- list_del_rcu(&entry->list);
- sock_kfree_s(sk, entry, sizeof(*entry));
- msk->pm.local_addr_used--;
- return 0;
- }
- }
-
- return -EINVAL;
+ entry = mptcp_userspace_pm_lookup_addr(msk, &addr->addr);
+ if (!entry)
+ return -EINVAL;
+
+ /* TODO: a refcount is needed because the entry can
+ * be used multiple times (e.g. fullmesh mode).
+ */
+ list_del_rcu(&entry->list);
+ sock_kfree_s(sk, entry, sizeof(*entry));
+ msk->pm.local_addr_used--;
+ return 0;
}
static struct mptcp_pm_addr_entry *
@@ -123,17 +134,12 @@ mptcp_userspace_pm_lookup_addr_by_id(str
int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk,
struct mptcp_addr_info *skc)
{
- struct mptcp_pm_addr_entry *entry = NULL, *e, new_entry;
+ struct mptcp_pm_addr_entry *entry = NULL, new_entry;
__be16 msk_sport = ((struct inet_sock *)
inet_sk((struct sock *)msk))->inet_sport;
spin_lock_bh(&msk->pm.lock);
- list_for_each_entry(e, &msk->pm.userspace_pm_local_addr_list, list) {
- if (mptcp_addresses_equal(&e->addr, skc, false)) {
- entry = e;
- break;
- }
- }
+ entry = mptcp_userspace_pm_lookup_addr(msk, skc);
spin_unlock_bh(&msk->pm.lock);
if (entry)
return entry->addr.id;
@@ -153,15 +159,11 @@ bool mptcp_userspace_pm_is_backup(struct
struct mptcp_addr_info *skc)
{
struct mptcp_pm_addr_entry *entry;
- bool backup = false;
+ bool backup;
spin_lock_bh(&msk->pm.lock);
- list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) {
- if (mptcp_addresses_equal(&entry->addr, skc, false)) {
- backup = !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
- break;
- }
- }
+ entry = mptcp_userspace_pm_lookup_addr(msk, skc);
+ backup = entry && !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
spin_unlock_bh(&msk->pm.lock);
return backup;
@@ -607,13 +609,12 @@ int mptcp_userspace_pm_set_flags(struct
bkup = 1;
spin_lock_bh(&msk->pm.lock);
- list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) {
- if (mptcp_addresses_equal(&entry->addr, &loc.addr, false)) {
- if (bkup)
- entry->flags |= MPTCP_PM_ADDR_FLAG_BACKUP;
- else
- entry->flags &= ~MPTCP_PM_ADDR_FLAG_BACKUP;
- }
+ entry = mptcp_userspace_pm_lookup_addr(msk, &loc.addr);
+ if (entry) {
+ if (bkup)
+ entry->flags |= MPTCP_PM_ADDR_FLAG_BACKUP;
+ else
+ entry->flags &= ~MPTCP_PM_ADDR_FLAG_BACKUP;
}
spin_unlock_bh(&msk->pm.lock);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 305/337] mptcp: pm: use addr entry for get_local_id
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (302 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 304/337] mptcp: add mptcp_userspace_pm_lookup_addr helper Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 306/337] mptcp: pm: userspace: fix use-after-free in get_local_id Greg Kroah-Hartman
` (39 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Geliang Tang, Matthieu Baerts (NGI0),
Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Geliang Tang <tanggeliang@kylinos.cn>
[ Upstream commit 7462fe22cc74321eb663768848976d42eba3ddbb ]
The following code in mptcp_userspace_pm_get_local_id() that assigns "skc"
to "new_entry" is not allowed in BPF if we use the same code to implement
the get_local_id() interface of a BFP path manager:
memset(&new_entry, 0, sizeof(struct mptcp_pm_addr_entry));
new_entry.addr = *skc;
new_entry.addr.id = 0;
new_entry.flags = MPTCP_PM_ADDR_FLAG_IMPLICIT;
To solve the issue, this patch moves this assignment to "new_entry" forward
to mptcp_pm_get_local_id(), and then passing "new_entry" as a parameter to
both mptcp_pm_nl_get_local_id() and mptcp_userspace_pm_get_local_id().
No behavioural changes intended.
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250307-net-next-mptcp-pm-reorg-v1-1-abef20ada03b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 9bc6d5e4ca9f ("mptcp: pm: userspace: fix use-after-free in get_local_id")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mptcp/pm.c | 9 ++++++---
net/mptcp/pm_netlink.c | 11 ++++-------
net/mptcp/pm_userspace.c | 17 ++++++-----------
net/mptcp/protocol.h | 6 ++++--
4 files changed, 20 insertions(+), 23 deletions(-)
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -427,7 +427,7 @@ out_unlock:
int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc)
{
- struct mptcp_addr_info skc_local;
+ struct mptcp_pm_addr_entry skc_local = { 0 };
struct mptcp_addr_info msk_local;
if (WARN_ON_ONCE(!msk))
@@ -437,10 +437,13 @@ int mptcp_pm_get_local_id(struct mptcp_s
* addr
*/
mptcp_local_address((struct sock_common *)msk, &msk_local);
- mptcp_local_address((struct sock_common *)skc, &skc_local);
- if (mptcp_addresses_equal(&msk_local, &skc_local, false))
+ mptcp_local_address((struct sock_common *)skc, &skc_local.addr);
+ if (mptcp_addresses_equal(&msk_local, &skc_local.addr, false))
return 0;
+ skc_local.addr.id = 0;
+ skc_local.flags = MPTCP_PM_ADDR_FLAG_IMPLICIT;
+
if (mptcp_pm_is_userspace(msk))
return mptcp_userspace_pm_get_local_id(msk, &skc_local);
return mptcp_pm_nl_get_local_id(msk, &skc_local);
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -1274,7 +1274,8 @@ static int mptcp_pm_nl_create_listen_soc
return err;
}
-int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc)
+int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk,
+ struct mptcp_pm_addr_entry *skc)
{
struct mptcp_pm_addr_entry *entry;
struct pm_nl_pernet *pernet;
@@ -1283,7 +1284,7 @@ int mptcp_pm_nl_get_local_id(struct mptc
pernet = pm_nl_get_pernet_from_msk(msk);
rcu_read_lock();
- entry = __lookup_addr(pernet, skc);
+ entry = __lookup_addr(pernet, &skc->addr);
ret = entry ? entry->addr.id : -1;
rcu_read_unlock();
if (ret >= 0)
@@ -1294,12 +1295,8 @@ int mptcp_pm_nl_get_local_id(struct mptc
if (!entry)
return -ENOMEM;
- entry->addr = *skc;
- entry->addr.id = 0;
+ *entry = *skc;
entry->addr.port = 0;
- entry->ifindex = 0;
- entry->flags = MPTCP_PM_ADDR_FLAG_IMPLICIT;
- entry->lsk = NULL;
ret = mptcp_pm_nl_append_new_local_addr(pernet, entry, false);
if (ret < 0)
kfree(entry);
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -132,27 +132,22 @@ mptcp_userspace_pm_lookup_addr_by_id(str
}
int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk,
- struct mptcp_addr_info *skc)
+ struct mptcp_pm_addr_entry *skc)
{
- struct mptcp_pm_addr_entry *entry = NULL, new_entry;
__be16 msk_sport = ((struct inet_sock *)
inet_sk((struct sock *)msk))->inet_sport;
+ struct mptcp_pm_addr_entry *entry;
spin_lock_bh(&msk->pm.lock);
- entry = mptcp_userspace_pm_lookup_addr(msk, skc);
+ entry = mptcp_userspace_pm_lookup_addr(msk, &skc->addr);
spin_unlock_bh(&msk->pm.lock);
if (entry)
return entry->addr.id;
- memset(&new_entry, 0, sizeof(struct mptcp_pm_addr_entry));
- new_entry.addr = *skc;
- new_entry.addr.id = 0;
- new_entry.flags = MPTCP_PM_ADDR_FLAG_IMPLICIT;
+ if (skc->addr.port == msk_sport)
+ skc->addr.port = 0;
- if (new_entry.addr.port == msk_sport)
- new_entry.addr.port = 0;
-
- return mptcp_userspace_pm_append_new_local_addr(msk, &new_entry, true);
+ return mptcp_userspace_pm_append_new_local_addr(msk, skc, true);
}
bool mptcp_userspace_pm_is_backup(struct mptcp_sock *msk,
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -1136,8 +1136,10 @@ bool mptcp_pm_add_addr_signal(struct mpt
bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
struct mptcp_rm_list *rm_list);
int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);
-int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
-int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
+int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk,
+ struct mptcp_pm_addr_entry *skc);
+int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk,
+ struct mptcp_pm_addr_entry *skc);
bool mptcp_pm_is_backup(struct mptcp_sock *msk, struct sock_common *skc);
bool mptcp_pm_nl_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
bool mptcp_userspace_pm_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 306/337] mptcp: pm: userspace: fix use-after-free in get_local_id
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (303 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 305/337] mptcp: pm: use addr entry for get_local_id Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 307/337] kmemleak: iommu/iova: fix transient kmemleak false positive Greg Kroah-Hartman
` (38 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Geliang Tang, Xuanqiang Luo,
Matthieu Baerts (NGI0), Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Geliang Tang <tanggeliang@kylinos.cn>
[ Upstream commit 9bc6d5e4ca9f3cbb41d43400b3a31cb0403796c9 ]
In mptcp_pm_userspace_get_local_id(), the address entry is looked up under
spinlock, but its id is read after dropping the lock. A concurrent deletion
can free the entry between the unlock and the read, leading to UAF.
The race window is narrow. It was reproduced only with a locally
constructed stress test that repeatedly overlaps an MP_JOIN SYN with a
MPTCP_PM_CMD_SUBFLOW_DESTROY request.
However, the KASAN report below confirms that the race is reachable:
[ 666.319376] BUG: KASAN: slab-use-after-free in mptcp_userspace_pm_get_local_id+0x1dc/0x1f0
[ 666.319386] Read of size 1 at addr ffff888124845610 by task swapper/0/0
...
[ 666.319401] Call Trace:
[ 666.319405] <IRQ>
[ 666.319408] dump_stack_lvl+0x53/0x70
[ 666.319412] print_address_description.constprop.0+0x2c/0x3b0
[ 666.319418] print_report+0xbe/0x2b0
[ 666.319421] ? mptcp_userspace_pm_get_local_id+0x1dc/0x1f0
[ 666.319423] kasan_report+0xce/0x100
[ 666.319426] ? mptcp_userspace_pm_get_local_id+0x1dc/0x1f0
[ 666.319429] mptcp_userspace_pm_get_local_id+0x1dc/0x1f0
[ 666.319433] mptcp_pm_get_local_id+0x371/0x440
...
[ 666.319821] Allocated by task 45539:
[ 666.319844] kasan_save_stack+0x33/0x60
[ 666.319855] kasan_save_track+0x14/0x30
[ 666.319858] __kasan_kmalloc+0x8f/0xa0
[ 666.319863] __kmalloc_noprof+0x1e7/0x520
[ 666.319867] sock_kmalloc+0xdf/0x130
[ 666.319885] sock_kmemdup+0x1b/0x40
[ 666.319888] mptcp_userspace_pm_append_new_local_addr+0x261/0x500
[ 666.319910] mptcp_pm_nl_announce_doit+0x16a/0x610
...
[ 666.319967] Freed by task 45560:
[ 666.319988] kasan_save_stack+0x33/0x60
[ 666.319991] kasan_save_track+0x14/0x30
[ 666.319994] kasan_save_free_info+0x3b/0x60
[ 666.319998] __kasan_slab_free+0x43/0x70
[ 666.320000] kfree+0x166/0x440
[ 666.320003] sock_kfree_s+0x1d/0x50
[ 666.320007] mptcp_userspace_pm_delete_local_addr.isra.0+0x157/0x200
[ 666.320011] mptcp_pm_nl_subflow_destroy_doit+0x51d/0xea0
Fix by copying the id into a local variable while still holding the lock,
and use -1 as a "not found" sentinel.
Fixes: f012d796a6de ("mptcp: check addrs list in userspace_pm_get_local_id")
Cc: stable@vger.kernel.org
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Tested-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260722-net-mptcp-misc-fixes-7-2-rc5-v1-2-6fb595bc86ef@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/mptcp/pm_userspace.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -137,12 +137,15 @@ int mptcp_userspace_pm_get_local_id(stru
__be16 msk_sport = ((struct inet_sock *)
inet_sk((struct sock *)msk))->inet_sport;
struct mptcp_pm_addr_entry *entry;
+ int id;
spin_lock_bh(&msk->pm.lock);
entry = mptcp_userspace_pm_lookup_addr(msk, &skc->addr);
+ id = entry ? entry->addr.id : -1;
spin_unlock_bh(&msk->pm.lock);
- if (entry)
- return entry->addr.id;
+
+ if (id != -1)
+ return id;
if (skc->addr.port == msk_sport)
skc->addr.port = 0;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 307/337] kmemleak: iommu/iova: fix transient kmemleak false positive
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (304 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 306/337] mptcp: pm: userspace: fix use-after-free in get_local_id Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 308/337] mm/kmemleak: fix checksum computation for per-cpu objects Greg Kroah-Hartman
` (37 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Catalin Marinas, Ido Schimmel,
Ido Schimmel, Robin Murphy, Joerg Roedel, Will Deacon,
Andrew Morton, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Catalin Marinas <catalin.marinas@arm.com>
[ Upstream commit 7591c127f3b17d5879f18819cad7058bf3a2e276 ]
The introduction of iova_depot_pop() in 911aa1245da8 ("iommu/iova: Make
the rcache depot scale better") confused kmemleak by moving a struct
iova_magazine object from a singly linked list to rcache->depot and
resetting the 'next' pointer referencing it. Unlike doubly linked lists,
the content of the object being referred is never changed on removal from
a singly linked list and the kmemleak checksum heuristics do not detect
such scenario. This leads to false positives like:
unreferenced object 0xffff8881a5301000 (size 1024):
comm "softirq", pid 0, jiffies 4306297099 (age 462.991s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 e7 7d 05 00 00 00 00 00 .........}......
0f b4 05 00 00 00 00 00 b4 96 05 00 00 00 00 00 ................
backtrace:
[<ffffffff819f5f08>] __kmem_cache_alloc_node+0x1e8/0x320
[<ffffffff818a239a>] kmalloc_trace+0x2a/0x60
[<ffffffff8231d31e>] free_iova_fast+0x28e/0x4e0
[<ffffffff82310860>] fq_ring_free_locked+0x1b0/0x310
[<ffffffff8231225d>] fq_flush_timeout+0x19d/0x2e0
[<ffffffff813e95ba>] call_timer_fn+0x19a/0x5c0
[<ffffffff813ea16b>] __run_timers+0x78b/0xb80
[<ffffffff813ea5bd>] run_timer_softirq+0x5d/0xd0
[<ffffffff82f1d915>] __do_softirq+0x205/0x8b5
Introduce kmemleak_transient_leak() which resets the object checksum
requiring another scan pass before it is reported (if still unreferenced).
Call this new API in iova_depot_pop().
Link: https://lkml.kernel.org/r/20241104111944.2207155-1-catalin.marinas@arm.com
Link: https://lore.kernel.org/r/ZY1osaGLyT-sdKE8@shredder/
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Ido Schimmel <idosch@idosch.org>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Stable-dep-of: 79c37ae3733e ("mm/kmemleak: fix checksum computation for per-cpu objects")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Documentation/dev-tools/kmemleak.rst | 1
drivers/iommu/iova.c | 6 +++++
include/linux/kmemleak.h | 4 +++
mm/kmemleak.c | 39 +++++++++++++++++++++++++++++++++++
4 files changed, 50 insertions(+)
--- a/Documentation/dev-tools/kmemleak.rst
+++ b/Documentation/dev-tools/kmemleak.rst
@@ -161,6 +161,7 @@ See the include/linux/kmemleak.h header
- ``kmemleak_free_percpu`` - notify of a percpu memory block freeing
- ``kmemleak_update_trace`` - update object allocation stack trace
- ``kmemleak_not_leak`` - mark an object as not a leak
+- ``kmemleak_transient_leak`` - mark an object as a transient leak
- ``kmemleak_ignore`` - do not scan or report an object as leak
- ``kmemleak_scan_area`` - add scan areas inside a memory block
- ``kmemleak_no_scan`` - do not scan a memory block
--- a/drivers/iommu/iova.c
+++ b/drivers/iommu/iova.c
@@ -6,6 +6,7 @@
*/
#include <linux/iova.h>
+#include <linux/kmemleak.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/smp.h>
@@ -673,6 +674,11 @@ static struct iova_magazine *iova_depot_
{
struct iova_magazine *mag = rcache->depot;
+ /*
+ * As the mag->next pointer is moved to rcache->depot and reset via
+ * the mag->size assignment, mark it as a transient false positive.
+ */
+ kmemleak_transient_leak(mag->next);
rcache->depot = mag->next;
mag->size = IOVA_MAG_SIZE;
rcache->depot_size--;
--- a/include/linux/kmemleak.h
+++ b/include/linux/kmemleak.h
@@ -26,6 +26,7 @@ extern void kmemleak_free_part(const voi
extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
extern void kmemleak_update_trace(const void *ptr) __ref;
extern void kmemleak_not_leak(const void *ptr) __ref;
+extern void kmemleak_transient_leak(const void *ptr) __ref;
extern void kmemleak_ignore(const void *ptr) __ref;
extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
extern void kmemleak_no_scan(const void *ptr) __ref;
@@ -93,6 +94,9 @@ static inline void kmemleak_update_trace
static inline void kmemleak_not_leak(const void *ptr)
{
}
+static inline void kmemleak_transient_leak(const void *ptr)
+{
+}
static inline void kmemleak_ignore(const void *ptr)
{
}
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -951,6 +951,28 @@ static void make_black_object(unsigned l
}
/*
+ * Reset the checksum of an object. The immediate effect is that it will not
+ * be reported as a leak during the next scan until its checksum is updated.
+ */
+static void reset_checksum(unsigned long ptr)
+{
+ unsigned long flags;
+ struct kmemleak_object *object;
+
+ object = find_and_get_object(ptr, 0);
+ if (!object) {
+ kmemleak_warn("Not resetting the checksum of an unknown object at 0x%08lx\n",
+ ptr);
+ return;
+ }
+
+ raw_spin_lock_irqsave(&object->lock, flags);
+ object->checksum = 0;
+ raw_spin_unlock_irqrestore(&object->lock, flags);
+ put_object(object);
+}
+
+/*
* Add a scanning area to the object. If at least one such area is added,
* kmemleak will only scan these ranges rather than the whole memory block.
*/
@@ -1219,6 +1241,23 @@ void __ref kmemleak_not_leak(const void
EXPORT_SYMBOL(kmemleak_not_leak);
/**
+ * kmemleak_transient_leak - mark an allocated object as transient false positive
+ * @ptr: pointer to beginning of the object
+ *
+ * Calling this function on an object will cause the memory block to not be
+ * reported as a leak temporarily. This may happen, for example, if the object
+ * is part of a singly linked list and the ->next reference to it is changed.
+ */
+void __ref kmemleak_transient_leak(const void *ptr)
+{
+ pr_debug("%s(0x%px)\n", __func__, ptr);
+
+ if (kmemleak_enabled && ptr && !IS_ERR(ptr))
+ reset_checksum((unsigned long)ptr);
+}
+EXPORT_SYMBOL(kmemleak_transient_leak);
+
+/**
* kmemleak_ignore - ignore an allocated object
* @ptr: pointer to beginning of the object
*
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 308/337] mm/kmemleak: fix checksum computation for per-cpu objects
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (305 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 307/337] kmemleak: iommu/iova: fix transient kmemleak false positive Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 309/337] drm/amdgpu: Respect placement requirements in amdgpu_gtt_mgr functions Greg Kroah-Hartman
` (36 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Breno Leitao, Catalin Marinas,
Pavel Tikhomirov, Andrew Morton, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Breno Leitao <leitao@debian.org>
[ Upstream commit 79c37ae3733e93d9d8ea12ecb44f717e61439024 ]
The per-cpu object checksum folds each CPU's CRC together with XOR and
seeds every CRC with 0. Both choices make update_checksum() miss content
changes:
- XOR is self-cancelling, so equal contents on two CPUs cancel out and
simultaneous identical changes leave the checksum unchanged.
- crc32(0, ...) over all-zero content is 0, so a freshly allocated,
zeroed per-cpu area checksums to 0, matching the initial value, and
the object is never seen to change.
See discussions at [0].
When update_checksum() wrongly reports an actively modified object as
unchanged, kmemleak stops greying it for an extra scan and can report a
live per-cpu object as a leak.
Fold the per-cpu CRC as a single rolling checksum across all CPUs and
initialise the object checksum to ~0 so the first computed value always
registers as a change, even for content that hashes to 0.
reset_checksum() is seeded the same way.
Link: https://lore.kernel.org/all/akfYImSNDh3OjIfR@gmail.com [0]
Link: https://lore.kernel.org/20260703-kmemleak_checksum-v1-1-5e0ab7d6966f@debian.org
Fixes: 6c99d4eb7c5e ("kmemleak: enable tracking for percpu pointers")
Signed-off-by: Breno Leitao <leitao@debian.org>
Co-developed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
mm/kmemleak.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -671,7 +671,7 @@ static struct kmemleak_object *__alloc_o
atomic_set(&object->use_count, 1);
object->excess_ref = 0;
object->count = 0; /* white color initially */
- object->checksum = 0;
+ object->checksum = ~0;
object->del_state = 0;
/* task information */
@@ -967,7 +967,7 @@ static void reset_checksum(unsigned long
}
raw_spin_lock_irqsave(&object->lock, flags);
- object->checksum = 0;
+ object->checksum = ~0;
raw_spin_unlock_irqrestore(&object->lock, flags);
put_object(object);
}
@@ -1382,7 +1382,8 @@ static bool update_checksum(struct kmeml
for_each_possible_cpu(cpu) {
void *ptr = per_cpu_ptr((void __percpu *)object->pointer, cpu);
- object->checksum ^= crc32(0, kasan_reset_tag((void *)ptr), object->size);
+ object->checksum = crc32(object->checksum,
+ kasan_reset_tag((void *)ptr), object->size);
}
} else {
object->checksum = crc32(0, kasan_reset_tag((void *)object->pointer), object->size);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 309/337] drm/amdgpu: Respect placement requirements in amdgpu_gtt_mgr functions
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (306 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 308/337] mm/kmemleak: fix checksum computation for per-cpu objects Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 310/337] drm/amdgpu: Fix context pstate override handling Greg Kroah-Hartman
` (35 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian König,
Timur Kristóf, Alex Deucher, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Timur Kristóf <timur.kristof@gmail.com>
[ Upstream commit 8882f8897e554053af9e72f4c2da8b1e2cce56c7 ]
When testing intersection and compatibility, respect
the actual placement requirements. This is a pre-requisite
for ensuring that UVD CS BOs do not cross 256M segments.
Fixes: ded910f368a5 ("drm/amdgpu: Implement intersect/compatible functions")
Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit bc06579ca29dee9c245a41b12e39c7bb6938af5d)
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 30 ++++++++++++++++++++++++++--
1 file changed, 28 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
@@ -217,7 +217,20 @@ static bool amdgpu_gtt_mgr_intersects(st
const struct ttm_place *place,
size_t size)
{
- return !place->lpfn || amdgpu_gtt_mgr_has_gart_addr(res);
+ const struct drm_mm_node *const node = &to_ttm_range_mgr_node(res)->mm_nodes[0];
+ const u32 num_pages = PFN_UP(size);
+
+ if (!place->lpfn)
+ return true;
+
+ if (!amdgpu_gtt_mgr_has_gart_addr(res))
+ return false;
+
+ if (place->fpfn >= (node->start + num_pages) ||
+ (place->lpfn && place->lpfn <= node->start))
+ return false;
+
+ return true;
}
/**
@@ -235,7 +248,20 @@ static bool amdgpu_gtt_mgr_compatible(st
const struct ttm_place *place,
size_t size)
{
- return !place->lpfn || amdgpu_gtt_mgr_has_gart_addr(res);
+ const struct drm_mm_node *const node = &to_ttm_range_mgr_node(res)->mm_nodes[0];
+ const u32 num_pages = PFN_UP(size);
+
+ if (!place->lpfn)
+ return true;
+
+ if (!amdgpu_gtt_mgr_has_gart_addr(res))
+ return false;
+
+ if (node->start < place->fpfn ||
+ (place->lpfn && (node->start + num_pages) > place->lpfn))
+ return false;
+
+ return true;
}
/**
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 310/337] drm/amdgpu: Fix context pstate override handling
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (307 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 309/337] drm/amdgpu: Respect placement requirements in amdgpu_gtt_mgr functions Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 311/337] drm/sched: Store the drm client_id in drm_sched_fence Greg Kroah-Hartman
` (34 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Tvrtko Ursulin, Chengming Gui,
Alex Deucher, Christian König, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
[ Upstream commit c1dc4ccb82c9e56325d8e7514ca4c90bd1efb351 ]
There are several problems in the context pstate handling code.
The most serious ones are potential use-after-free and NULL pointer
dereferences at context initialization time. Both are due
amdgpu_ctx_init() not holding the adev->pm.stable_pstate_ctx_lock, which
is otherwise used from both sysfs and the context code itself for
modifying and clearing the stored context pointer.
Second issue is that context fini can trample over the pstate
configuration set via sysfs. This is due the restore state
(ctx->stable_pstate) being saved at context init time, and not if, or when
the context actually changes the pstate. As the context exits it will
therefore incorrectly restore to what was set before the sysfs override
was requested.
The simplest fix is to drastically simplify how the state is tracked, by
clearly defining the points at which pstate ownership is taken and
released, and to handle all transitions under the correct lock.
Instead of at context init time, the previous state is saved only at the
point the context overrides the current state, and is restored on context
exit only if the context is still the owner of the current override state.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Fixes: 79610d304133 ("drm/amdgpu: fix pstate setting issue")
Cc: Chengming Gui <Jack.Gui@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 1b5e413713c0a93bc1818394d0ce49aaad21bd27)
Cc: <stable@vger.kernel.org> # v6.1+
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 71 ++++++++++++++++++--------------
1 file changed, 42 insertions(+), 29 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -321,7 +321,6 @@ static int amdgpu_ctx_init(struct amdgpu
struct drm_file *filp, struct amdgpu_ctx *ctx)
{
struct amdgpu_fpriv *fpriv = filp->driver_priv;
- u32 current_stable_pstate;
int r;
r = amdgpu_ctx_priority_permit(filp, priority);
@@ -339,37 +338,22 @@ static int amdgpu_ctx_init(struct amdgpu
ctx->generation = amdgpu_vm_generation(mgr->adev, &fpriv->vm);
ctx->init_priority = priority;
ctx->override_priority = AMDGPU_CTX_PRIORITY_UNSET;
-
- r = amdgpu_ctx_get_stable_pstate(ctx, ¤t_stable_pstate);
- if (r)
- return r;
-
- if (mgr->adev->pm.stable_pstate_ctx)
- ctx->stable_pstate = mgr->adev->pm.stable_pstate_ctx->stable_pstate;
- else
- ctx->stable_pstate = current_stable_pstate;
+ ctx->stable_pstate = AMDGPU_CTX_STABLE_PSTATE_NONE;
ctx->ctx_mgr = &(fpriv->ctx_mgr);
return 0;
}
-static int amdgpu_ctx_set_stable_pstate(struct amdgpu_ctx *ctx,
- u32 stable_pstate)
+static int __amdgpu_ctx_set_stable_pstate(struct amdgpu_ctx *ctx,
+ u32 stable_pstate)
{
struct amdgpu_device *adev = ctx->mgr->adev;
enum amd_dpm_forced_level level;
+ struct amdgpu_ctx *current_ctx;
u32 current_stable_pstate;
- int r;
-
- mutex_lock(&adev->pm.stable_pstate_ctx_lock);
- if (adev->pm.stable_pstate_ctx && adev->pm.stable_pstate_ctx != ctx) {
- r = -EBUSY;
- goto done;
- }
+ int r = 0;
- r = amdgpu_ctx_get_stable_pstate(ctx, ¤t_stable_pstate);
- if (r || (stable_pstate == current_stable_pstate))
- goto done;
+ lockdep_assert_held(&adev->pm.stable_pstate_ctx_lock);
switch (stable_pstate) {
case AMDGPU_CTX_STABLE_PSTATE_NONE:
@@ -388,17 +372,41 @@ static int amdgpu_ctx_set_stable_pstate(
level = AMD_DPM_FORCED_LEVEL_PROFILE_PEAK;
break;
default:
- r = -EINVAL;
- goto done;
+ return -EINVAL;
}
+ current_ctx = adev->pm.stable_pstate_ctx;
+ if (current_ctx && current_ctx != ctx)
+ return -EBUSY;
+
+ r = amdgpu_ctx_get_stable_pstate(ctx, ¤t_stable_pstate);
+ if (r || current_stable_pstate == stable_pstate)
+ return r;
+
r = amdgpu_dpm_force_performance_level(adev, level);
+ if (r)
+ return r;
- if (level == AMD_DPM_FORCED_LEVEL_AUTO)
- adev->pm.stable_pstate_ctx = NULL;
- else
+ if (!current_ctx) {
adev->pm.stable_pstate_ctx = ctx;
-done:
+ /*
+ * Serialized by context taking ownership for the first time
+ * while holding adev->pm.stable_pstate_ctx_lock).
+ */
+ WRITE_ONCE(ctx->stable_pstate, current_stable_pstate);
+ }
+
+ return 0;
+}
+
+static int amdgpu_ctx_set_stable_pstate(struct amdgpu_ctx *ctx,
+ u32 stable_pstate)
+{
+ struct amdgpu_device *adev = ctx->mgr->adev;
+ int r;
+
+ mutex_lock(&adev->pm.stable_pstate_ctx_lock);
+ r = __amdgpu_ctx_set_stable_pstate(ctx, stable_pstate);
mutex_unlock(&adev->pm.stable_pstate_ctx_lock);
return r;
@@ -424,7 +432,12 @@ static void amdgpu_ctx_fini(struct kref
}
if (drm_dev_enter(adev_to_drm(adev), &idx)) {
- amdgpu_ctx_set_stable_pstate(ctx, ctx->stable_pstate);
+ mutex_lock(&adev->pm.stable_pstate_ctx_lock);
+ if (adev->pm.stable_pstate_ctx == ctx) {
+ __amdgpu_ctx_set_stable_pstate(ctx, ctx->stable_pstate);
+ adev->pm.stable_pstate_ctx = NULL;
+ }
+ mutex_unlock(&adev->pm.stable_pstate_ctx_lock);
drm_dev_exit(idx);
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 311/337] drm/sched: Store the drm client_id in drm_sched_fence
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (308 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 310/337] drm/amdgpu: Fix context pstate override handling Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 312/337] drm/amdgpu: give each kernel job a unique id Greg Kroah-Hartman
` (33 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Christian König,
Pierre-Eric Pelloux-Prayer, Philipp Stanner, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
[ Upstream commit 2956554823cedb390b7ec4534afa898176317638 ]
This will be used in a later commit to trace the drm client_id in
some of the gpu_scheduler trace events.
This requires changing all the users of drm_sched_job_init to
add an extra parameter.
The newly added drm_client_id field in the drm_sched_fence is a bit
of a duplicate of the owner one. One suggestion I received was to
merge those 2 fields - this can't be done right now as amdgpu uses
some special values (AMDGPU_FENCE_OWNER_*) that can't really be
translated into a client id. Christian is working on getting rid of
those; when it's done we should be able to squash owner/drm_client_id
together.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Signed-off-by: Philipp Stanner <phasta@kernel.org>
Link: https://lore.kernel.org/r/20250526125505.2360-3-pierre-eric.pelloux-prayer@amd.com
Stable-dep-of: 3e864bf2a32a ("drm/amdgpu/gfx: fix cleaner shader IB buffer overflow")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 8 +++++---
drivers/gpu/drm/amd/amdgpu/amdgpu_job.h | 3 ++-
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 2 +-
drivers/gpu/drm/imagination/pvr_job.c | 2 +-
drivers/gpu/drm/imagination/pvr_queue.c | 5 +++--
drivers/gpu/drm/imagination/pvr_queue.h | 2 +-
drivers/gpu/drm/lima/lima_gem.c | 2 +-
drivers/gpu/drm/lima/lima_sched.c | 6 ++++--
drivers/gpu/drm/lima/lima_sched.h | 3 ++-
drivers/gpu/drm/msm/msm_gem_submit.c | 8 +++++---
drivers/gpu/drm/nouveau/nouveau_sched.c | 3 ++-
drivers/gpu/drm/panfrost/panfrost_drv.c | 2 +-
drivers/gpu/drm/panthor/panthor_drv.c | 3 ++-
drivers/gpu/drm/panthor/panthor_mmu.c | 2 +-
drivers/gpu/drm/panthor/panthor_sched.c | 5 +++--
drivers/gpu/drm/panthor/panthor_sched.h | 3 ++-
drivers/gpu/drm/scheduler/sched_fence.c | 4 +++-
drivers/gpu/drm/scheduler/sched_main.c | 7 +++++--
drivers/gpu/drm/v3d/v3d_submit.c | 2 +-
drivers/gpu/drm/xe/xe_sched_job.c | 3 ++-
include/drm/gpu_scheduler.h | 12 ++++++++++--
23 files changed, 60 insertions(+), 32 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -681,7 +681,7 @@ int amdgpu_amdkfd_submit_ib(struct amdgp
goto err;
}
- ret = amdgpu_job_alloc(adev, NULL, NULL, NULL, 1, &job);
+ ret = amdgpu_job_alloc(adev, NULL, NULL, NULL, 1, &job, 0);
if (ret)
goto err;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -297,7 +297,8 @@ static int amdgpu_cs_pass1(struct amdgpu
for (i = 0; i < p->gang_size; ++i) {
ret = amdgpu_job_alloc(p->adev, vm, p->entities[i], vm,
- num_ibs[i], &p->jobs[i]);
+ num_ibs[i], &p->jobs[i],
+ p->filp->client_id);
if (ret)
goto free_all_kdata;
p->jobs[i]->enforce_isolation = p->adev->enforce_isolation[fpriv->xcp_id];
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -187,7 +187,8 @@ exit:
int amdgpu_job_alloc(struct amdgpu_device *adev, struct amdgpu_vm *vm,
struct drm_sched_entity *entity, void *owner,
- unsigned int num_ibs, struct amdgpu_job **job)
+ unsigned int num_ibs, struct amdgpu_job **job,
+ u64 drm_client_id)
{
if (num_ibs == 0)
return -EINVAL;
@@ -210,7 +211,8 @@ int amdgpu_job_alloc(struct amdgpu_devic
if (!entity)
return 0;
- return drm_sched_job_init(&(*job)->base, entity, 1, owner);
+ return drm_sched_job_init(&(*job)->base, entity, 1, owner,
+ drm_client_id);
}
int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev,
@@ -220,7 +222,7 @@ int amdgpu_job_alloc_with_ib(struct amdg
{
int r;
- r = amdgpu_job_alloc(adev, NULL, entity, owner, 1, job);
+ r = amdgpu_job_alloc(adev, NULL, entity, owner, 1, job, 0);
if (r)
return r;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
@@ -90,7 +90,8 @@ static inline struct amdgpu_ring *amdgpu
int amdgpu_job_alloc(struct amdgpu_device *adev, struct amdgpu_vm *vm,
struct drm_sched_entity *entity, void *owner,
- unsigned int num_ibs, struct amdgpu_job **job);
+ unsigned int num_ibs, struct amdgpu_job **job,
+ u64 drm_client_id);
int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev,
struct drm_sched_entity *entity, void *owner,
size_t size, enum amdgpu_ib_pool_type pool_type,
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -535,7 +535,7 @@ int etnaviv_ioctl_gem_submit(struct drm_
ret = drm_sched_job_init(&submit->sched_job,
&ctx->sched_entity[args->pipe],
- 1, submit->ctx);
+ 1, submit->ctx, file->client_id);
if (ret)
goto err_submit_put;
--- a/drivers/gpu/drm/imagination/pvr_job.c
+++ b/drivers/gpu/drm/imagination/pvr_job.c
@@ -453,7 +453,7 @@ create_job(struct pvr_device *pvr_dev,
if (err)
goto err_put_job;
- err = pvr_queue_job_init(job);
+ err = pvr_queue_job_init(job, pvr_file->file->client_id);
if (err)
goto err_put_job;
--- a/drivers/gpu/drm/imagination/pvr_queue.c
+++ b/drivers/gpu/drm/imagination/pvr_queue.c
@@ -1088,6 +1088,7 @@ static int pvr_queue_cleanup_fw_context(
/**
* pvr_queue_job_init() - Initialize queue related fields in a pvr_job object.
* @job: The job to initialize.
+ * @drm_client_id: drm_file.client_id submitting the job
*
* Bind the job to a queue and allocate memory to guarantee pvr_queue_job_arm()
* and pvr_queue_job_push() can't fail. We also make sure the context type is
@@ -1097,7 +1098,7 @@ static int pvr_queue_cleanup_fw_context(
* * 0 on success, or
* * An error code if something failed.
*/
-int pvr_queue_job_init(struct pvr_job *job)
+int pvr_queue_job_init(struct pvr_job *job, u64 drm_client_id)
{
/* Fragment jobs need at least one native fence wait on the geometry job fence. */
u32 min_native_dep_count = job->type == DRM_PVR_JOB_TYPE_FRAGMENT ? 1 : 0;
@@ -1114,7 +1115,7 @@ int pvr_queue_job_init(struct pvr_job *j
if (!pvr_cccb_cmdseq_can_fit(&queue->cccb, job_cmds_size(job, min_native_dep_count)))
return -E2BIG;
- err = drm_sched_job_init(&job->base, &queue->entity, 1, THIS_MODULE);
+ err = drm_sched_job_init(&job->base, &queue->entity, 1, THIS_MODULE, drm_client_id);
if (err)
return err;
--- a/drivers/gpu/drm/imagination/pvr_queue.h
+++ b/drivers/gpu/drm/imagination/pvr_queue.h
@@ -143,7 +143,7 @@ struct pvr_queue {
bool pvr_queue_fence_is_ufo_backed(struct dma_fence *f);
-int pvr_queue_job_init(struct pvr_job *job);
+int pvr_queue_job_init(struct pvr_job *job, u64 drm_client_id);
void pvr_queue_job_cleanup(struct pvr_job *job);
--- a/drivers/gpu/drm/lima/lima_gem.c
+++ b/drivers/gpu/drm/lima/lima_gem.c
@@ -341,7 +341,7 @@ int lima_gem_submit(struct drm_file *fil
err = lima_sched_task_init(
submit->task, submit->ctx->context + submit->pipe,
- bos, submit->nr_bos, vm);
+ bos, submit->nr_bos, vm, file->client_id);
if (err)
goto err_out1;
--- a/drivers/gpu/drm/lima/lima_sched.c
+++ b/drivers/gpu/drm/lima/lima_sched.c
@@ -113,7 +113,8 @@ static inline struct lima_sched_pipe *to
int lima_sched_task_init(struct lima_sched_task *task,
struct lima_sched_context *context,
struct lima_bo **bos, int num_bos,
- struct lima_vm *vm)
+ struct lima_vm *vm,
+ u64 drm_client_id)
{
int err, i;
@@ -124,7 +125,8 @@ int lima_sched_task_init(struct lima_sch
for (i = 0; i < num_bos; i++)
drm_gem_object_get(&bos[i]->base.base);
- err = drm_sched_job_init(&task->base, &context->base, 1, vm);
+ err = drm_sched_job_init(&task->base, &context->base, 1, vm,
+ drm_client_id);
if (err) {
kfree(task->bos);
return err;
--- a/drivers/gpu/drm/lima/lima_sched.h
+++ b/drivers/gpu/drm/lima/lima_sched.h
@@ -88,7 +88,8 @@ struct lima_sched_pipe {
int lima_sched_task_init(struct lima_sched_task *task,
struct lima_sched_context *context,
struct lima_bo **bos, int num_bos,
- struct lima_vm *vm);
+ struct lima_vm *vm,
+ u64 drm_client_id);
void lima_sched_task_fini(struct lima_sched_task *task);
int lima_sched_context_init(struct lima_sched_pipe *pipe,
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -30,7 +30,7 @@
static struct msm_gem_submit *submit_create(struct drm_device *dev,
struct msm_gpu *gpu,
struct msm_gpu_submitqueue *queue, uint32_t nr_bos,
- uint32_t nr_cmds)
+ uint32_t nr_cmds, u64 drm_client_id)
{
static atomic_t ident = ATOMIC_INIT(0);
struct msm_gem_submit *submit;
@@ -54,7 +54,8 @@ static struct msm_gem_submit *submit_cre
return ERR_PTR(ret);
}
- ret = drm_sched_job_init(&submit->base, queue->entity, 1, queue);
+ ret = drm_sched_job_init(&submit->base, queue->entity, 1, queue,
+ drm_client_id);
if (ret) {
kfree(submit->hw_fence);
kfree(submit);
@@ -712,7 +713,8 @@ int msm_ioctl_gem_submit(struct drm_devi
}
}
- submit = submit_create(dev, gpu, queue, args->nr_bos, args->nr_cmds);
+ submit = submit_create(dev, gpu, queue, args->nr_bos, args->nr_cmds,
+ file->client_id);
if (IS_ERR(submit)) {
ret = PTR_ERR(submit);
goto out_post_unlock;
--- a/drivers/gpu/drm/nouveau/nouveau_sched.c
+++ b/drivers/gpu/drm/nouveau/nouveau_sched.c
@@ -87,7 +87,8 @@ nouveau_job_init(struct nouveau_job *job
}
ret = drm_sched_job_init(&job->base, &sched->entity,
- args->credits, NULL);
+ args->credits, NULL,
+ job->file_priv->client_id);
if (ret)
goto err_free_chains;
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -273,7 +273,7 @@ static int panfrost_ioctl_submit(struct
ret = drm_sched_job_init(&job->base,
&file_priv->sched_entity[slot],
- 1, NULL);
+ 1, NULL, file->client_id);
if (ret)
goto out_put_job;
--- a/drivers/gpu/drm/panthor/panthor_drv.c
+++ b/drivers/gpu/drm/panthor/panthor_drv.c
@@ -908,7 +908,8 @@ static int panthor_ioctl_group_submit(st
const struct drm_panthor_queue_submit *qsubmit = &jobs_args[i];
struct drm_sched_job *job;
- job = panthor_job_create(pfile, args->group_handle, qsubmit);
+ job = panthor_job_create(pfile, args->group_handle, qsubmit,
+ file->client_id);
if (IS_ERR(job)) {
ret = PTR_ERR(job);
goto out_cleanup_submit_ctx;
--- a/drivers/gpu/drm/panthor/panthor_mmu.c
+++ b/drivers/gpu/drm/panthor/panthor_mmu.c
@@ -2498,7 +2498,7 @@ panthor_vm_bind_job_create(struct drm_fi
kref_init(&job->refcount);
job->vm = panthor_vm_get(vm);
- ret = drm_sched_job_init(&job->base, &vm->entity, 1, vm);
+ ret = drm_sched_job_init(&job->base, &vm->entity, 1, vm, file->client_id);
if (ret)
goto err_put_job;
--- a/drivers/gpu/drm/panthor/panthor_sched.c
+++ b/drivers/gpu/drm/panthor/panthor_sched.c
@@ -3664,7 +3664,8 @@ struct panthor_vm *panthor_job_vm(struct
struct drm_sched_job *
panthor_job_create(struct panthor_file *pfile,
u16 group_handle,
- const struct drm_panthor_queue_submit *qsubmit)
+ const struct drm_panthor_queue_submit *qsubmit,
+ u64 drm_client_id)
{
struct panthor_group_pool *gpool = pfile->groups;
struct panthor_job *job;
@@ -3736,7 +3737,7 @@ panthor_job_create(struct panthor_file *
ret = drm_sched_job_init(&job->base,
&job->group->queues[job->queue_idx]->entity,
- credits, job->group);
+ credits, job->group, drm_client_id);
if (ret)
goto err_put_job;
--- a/drivers/gpu/drm/panthor/panthor_sched.h
+++ b/drivers/gpu/drm/panthor/panthor_sched.h
@@ -28,7 +28,8 @@ int panthor_group_get_state(struct panth
struct drm_sched_job *
panthor_job_create(struct panthor_file *pfile,
u16 group_handle,
- const struct drm_panthor_queue_submit *qsubmit);
+ const struct drm_panthor_queue_submit *qsubmit,
+ u64 drm_client_id);
struct drm_sched_job *panthor_job_get(struct drm_sched_job *job);
struct panthor_vm *panthor_job_vm(struct drm_sched_job *sched_job);
void panthor_job_put(struct drm_sched_job *job);
--- a/drivers/gpu/drm/scheduler/sched_fence.c
+++ b/drivers/gpu/drm/scheduler/sched_fence.c
@@ -204,7 +204,8 @@ struct drm_sched_fence *to_drm_sched_fen
EXPORT_SYMBOL(to_drm_sched_fence);
struct drm_sched_fence *drm_sched_fence_alloc(struct drm_sched_entity *entity,
- void *owner)
+ void *owner,
+ u64 drm_client_id)
{
struct drm_sched_fence *fence = NULL;
@@ -213,6 +214,7 @@ struct drm_sched_fence *drm_sched_fence_
return NULL;
fence->owner = owner;
+ fence->drm_client_id = drm_client_id;
spin_lock_init(&fence->lock);
return fence;
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -772,6 +772,8 @@ EXPORT_SYMBOL(drm_sched_resubmit_jobs);
* @credits: the number of credits this job contributes to the schedulers
* credit limit
* @owner: job owner for debugging
+ * @drm_client_id: &struct drm_file.client_id of the owner (used by trace
+ * events)
*
* Refer to drm_sched_entity_push_job() documentation
* for locking considerations.
@@ -788,7 +790,8 @@ EXPORT_SYMBOL(drm_sched_resubmit_jobs);
*/
int drm_sched_job_init(struct drm_sched_job *job,
struct drm_sched_entity *entity,
- u32 credits, void *owner)
+ u32 credits, void *owner,
+ uint64_t drm_client_id)
{
if (!entity->rq) {
/* This will most likely be followed by missing frames
@@ -814,7 +817,7 @@ int drm_sched_job_init(struct drm_sched_
job->entity = entity;
job->credits = credits;
- job->s_fence = drm_sched_fence_alloc(entity, owner);
+ job->s_fence = drm_sched_fence_alloc(entity, owner, drm_client_id);
if (!job->s_fence)
return -ENOMEM;
--- a/drivers/gpu/drm/v3d/v3d_submit.c
+++ b/drivers/gpu/drm/v3d/v3d_submit.c
@@ -186,7 +186,7 @@ v3d_job_init(struct v3d_dev *v3d, struct
job->file = file_priv;
ret = drm_sched_job_init(&job->base, &v3d_priv->sched_entity[queue],
- 1, v3d_priv);
+ 1, v3d_priv, file_priv->client_id);
if (ret)
return ret;
--- a/drivers/gpu/drm/xe/xe_sched_job.c
+++ b/drivers/gpu/drm/xe/xe_sched_job.c
@@ -113,7 +113,8 @@ struct xe_sched_job *xe_sched_job_create
kref_init(&job->refcount);
xe_exec_queue_get(job->q);
- err = drm_sched_job_init(&job->drm, q->entity, 1, NULL);
+ err = drm_sched_job_init(&job->drm, q->entity, 1, NULL,
+ q->xef ? q->xef->drm->client_id : 0);
if (err)
goto err_free;
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -309,6 +309,13 @@ struct drm_sched_fence {
* @owner: job owner for debugging
*/
void *owner;
+
+ /**
+ * @drm_client_id:
+ *
+ * The client_id of the drm_file which owns the job.
+ */
+ uint64_t drm_client_id;
};
struct drm_sched_fence *to_drm_sched_fence(struct dma_fence *f);
@@ -553,7 +560,8 @@ int drm_sched_init(struct drm_gpu_schedu
void drm_sched_fini(struct drm_gpu_scheduler *sched);
int drm_sched_job_init(struct drm_sched_job *job,
struct drm_sched_entity *entity,
- u32 credits, void *owner);
+ u32 credits, void *owner,
+ u64 drm_client_id);
void drm_sched_job_arm(struct drm_sched_job *job);
int drm_sched_job_add_dependency(struct drm_sched_job *job,
struct dma_fence *fence);
@@ -613,7 +621,7 @@ bool drm_sched_entity_is_ready(struct dr
int drm_sched_entity_error(struct drm_sched_entity *entity);
struct drm_sched_fence *drm_sched_fence_alloc(
- struct drm_sched_entity *s_entity, void *owner);
+ struct drm_sched_entity *s_entity, void *owner, u64 drm_client_id);
void drm_sched_fence_init(struct drm_sched_fence *fence,
struct drm_sched_entity *entity);
void drm_sched_fence_free(struct drm_sched_fence *fence);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 312/337] drm/amdgpu: give each kernel job a unique id
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (309 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 311/337] drm/sched: Store the drm client_id in drm_sched_fence Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 313/337] drm/amdgpu/gfx: fix cleaner shader IB buffer overflow Greg Kroah-Hartman
` (32 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Pierre-Eric Pelloux-Prayer,
Alex Deucher, Arunpravin Paneer Selvam, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
[ Upstream commit 256576ed6895b81290690ae3e2b9f62eb7c642fc ]
Userspace jobs have drm_file.client_id as a unique identifier
as job's owners. For kernel jobs, we can allocate arbitrary
values - the risk of overlap with userspace ids is small (given
that it's a u64 value).
In the unlikely case the overlap happens, it'll only impact
trace events.
Since this ID is traced in the gpu_scheduler trace events, this
allows to determine the source of each job sent to the hardware.
To make grepping easier, the IDs are defined as they will appear
in the trace output.
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Link: https://lore.kernel.org/r/20250604122827.2191-1-pierre-eric.pelloux-prayer@amd.com
Stable-dep-of: 3e864bf2a32a ("drm/amdgpu/gfx: fix cleaner shader IB buffer overflow")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 5 +++--
drivers/gpu/drm/amd/amdgpu/amdgpu_job.h | 19 ++++++++++++++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 28 +++++++++++++++++-----------
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c | 5 +++--
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 8 ++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6 ++++--
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c | 4 +++-
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c | 4 +++-
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | 12 +++++++-----
drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 6 ++++--
drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c | 6 ++++--
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 3 ++-
19 files changed, 84 insertions(+), 41 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -1449,7 +1449,8 @@ static int amdgpu_gfx_run_cleaner_shader
owner = (void *)(unsigned long)atomic_inc_return(&counter);
r = amdgpu_job_alloc_with_ib(ring->adev, &entity, owner,
- 64, 0, &job);
+ 64, 0, &job,
+ AMDGPU_KERNEL_JOB_ID_CLEANER_SHADER);
if (r)
goto err;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -664,7 +664,7 @@ void amdgpu_gmc_flush_gpu_tlb(struct amd
r = amdgpu_job_alloc_with_ib(ring->adev, &adev->mman.high_pr,
AMDGPU_FENCE_OWNER_UNDEFINED,
16 * 4, AMDGPU_IB_POOL_IMMEDIATE,
- &job);
+ &job, AMDGPU_KERNEL_JOB_ID_FLUSH_GPU_TLB);
if (r)
goto error_alloc;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -218,11 +218,12 @@ int amdgpu_job_alloc(struct amdgpu_devic
int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev,
struct drm_sched_entity *entity, void *owner,
size_t size, enum amdgpu_ib_pool_type pool_type,
- struct amdgpu_job **job)
+ struct amdgpu_job **job, u64 k_job_id)
{
int r;
- r = amdgpu_job_alloc(adev, NULL, entity, owner, 1, job, 0);
+ r = amdgpu_job_alloc(adev, NULL, entity, owner, 1, job,
+ k_job_id);
if (r)
return r;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
@@ -44,6 +44,22 @@
struct amdgpu_fence;
enum amdgpu_ib_pool_type;
+/* Internal kernel job ids. (decreasing values, starting from U64_MAX). */
+#define AMDGPU_KERNEL_JOB_ID_VM_UPDATE (18446744073709551615ULL)
+#define AMDGPU_KERNEL_JOB_ID_VM_UPDATE_PDES (18446744073709551614ULL)
+#define AMDGPU_KERNEL_JOB_ID_VM_UPDATE_RANGE (18446744073709551613ULL)
+#define AMDGPU_KERNEL_JOB_ID_VM_PT_CLEAR (18446744073709551612ULL)
+#define AMDGPU_KERNEL_JOB_ID_TTM_MAP_BUFFER (18446744073709551611ULL)
+#define AMDGPU_KERNEL_JOB_ID_TTM_ACCESS_MEMORY_SDMA (18446744073709551610ULL)
+#define AMDGPU_KERNEL_JOB_ID_TTM_COPY_BUFFER (18446744073709551609ULL)
+#define AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE (18446744073709551608ULL)
+#define AMDGPU_KERNEL_JOB_ID_MOVE_BLIT (18446744073709551607ULL)
+#define AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER (18446744073709551606ULL)
+#define AMDGPU_KERNEL_JOB_ID_CLEANER_SHADER (18446744073709551605ULL)
+#define AMDGPU_KERNEL_JOB_ID_FLUSH_GPU_TLB (18446744073709551604ULL)
+#define AMDGPU_KERNEL_JOB_ID_KFD_GART_MAP (18446744073709551603ULL)
+#define AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST (18446744073709551602ULL)
+
struct amdgpu_job {
struct drm_sched_job base;
struct amdgpu_vm *vm;
@@ -95,7 +111,8 @@ int amdgpu_job_alloc(struct amdgpu_devic
int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev,
struct drm_sched_entity *entity, void *owner,
size_t size, enum amdgpu_ib_pool_type pool_type,
- struct amdgpu_job **job);
+ struct amdgpu_job **job,
+ u64 k_job_id);
void amdgpu_job_set_resources(struct amdgpu_job *job, struct amdgpu_bo *gds,
struct amdgpu_bo *gws, struct amdgpu_bo *oa);
void amdgpu_job_free_resources(struct amdgpu_job *job);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c
@@ -192,7 +192,8 @@ static int amdgpu_jpeg_dec_set_reg(struc
int i, r;
r = amdgpu_job_alloc_with_ib(ring->adev, NULL, NULL, ib_size_dw * 4,
- AMDGPU_IB_POOL_DIRECT, &job);
+ AMDGPU_IB_POOL_DIRECT, &job,
+ AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1269,7 +1269,8 @@ void amdgpu_bo_release_notify(struct ttm
if (r)
goto out;
- r = amdgpu_fill_buffer(abo, 0, &bo->base._resv, &fence, true);
+ r = amdgpu_fill_buffer(abo, 0, &bo->base._resv, &fence, true,
+ AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE);
if (WARN_ON(r))
goto out;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -229,7 +229,8 @@ static int amdgpu_ttm_map_buffer(struct
r = amdgpu_job_alloc_with_ib(adev, &adev->mman.high_pr,
AMDGPU_FENCE_OWNER_UNDEFINED,
num_dw * 4 + num_bytes,
- AMDGPU_IB_POOL_DELAYED, &job);
+ AMDGPU_IB_POOL_DELAYED, &job,
+ AMDGPU_KERNEL_JOB_ID_TTM_MAP_BUFFER);
if (r)
return r;
@@ -408,7 +409,7 @@ static int amdgpu_move_blit(struct ttm_b
struct dma_fence *wipe_fence = NULL;
r = amdgpu_fill_buffer(abo, 0, NULL, &wipe_fence,
- false);
+ false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT);
if (r) {
goto error;
} else if (wipe_fence) {
@@ -1530,7 +1531,8 @@ static int amdgpu_ttm_access_memory_sdma
r = amdgpu_job_alloc_with_ib(adev, &adev->mman.high_pr,
AMDGPU_FENCE_OWNER_UNDEFINED,
num_dw * 4, AMDGPU_IB_POOL_DELAYED,
- &job);
+ &job,
+ AMDGPU_KERNEL_JOB_ID_TTM_ACCESS_MEMORY_SDMA);
if (r)
goto out;
@@ -2175,7 +2177,7 @@ static int amdgpu_ttm_prepare_job(struct
struct dma_resv *resv,
bool vm_needs_flush,
struct amdgpu_job **job,
- bool delayed)
+ bool delayed, u64 k_job_id)
{
enum amdgpu_ib_pool_type pool = direct_submit ?
AMDGPU_IB_POOL_DIRECT :
@@ -2185,7 +2187,7 @@ static int amdgpu_ttm_prepare_job(struct
&adev->mman.high_pr;
r = amdgpu_job_alloc_with_ib(adev, entity,
AMDGPU_FENCE_OWNER_UNDEFINED,
- num_dw * 4, pool, job);
+ num_dw * 4, pool, job, k_job_id);
if (r)
return r;
@@ -2224,7 +2226,8 @@ int amdgpu_copy_buffer(struct amdgpu_rin
num_loops = DIV_ROUND_UP(byte_count, max_bytes);
num_dw = ALIGN(num_loops * adev->mman.buffer_funcs->copy_num_dw, 8);
r = amdgpu_ttm_prepare_job(adev, direct_submit, num_dw,
- resv, vm_needs_flush, &job, false);
+ resv, vm_needs_flush, &job, false,
+ AMDGPU_KERNEL_JOB_ID_TTM_COPY_BUFFER);
if (r)
return r;
@@ -2259,7 +2262,8 @@ static int amdgpu_ttm_fill_mem(struct am
uint64_t dst_addr, uint32_t byte_count,
struct dma_resv *resv,
struct dma_fence **fence,
- bool vm_needs_flush, bool delayed)
+ bool vm_needs_flush, bool delayed,
+ u64 k_job_id)
{
struct amdgpu_device *adev = ring->adev;
unsigned int num_loops, num_dw;
@@ -2272,7 +2276,7 @@ static int amdgpu_ttm_fill_mem(struct am
num_loops = DIV_ROUND_UP_ULL(byte_count, max_bytes);
num_dw = ALIGN(num_loops * adev->mman.buffer_funcs->fill_num_dw, 8);
r = amdgpu_ttm_prepare_job(adev, false, num_dw, resv, vm_needs_flush,
- &job, delayed);
+ &job, delayed, k_job_id);
if (r)
return r;
@@ -2342,7 +2346,8 @@ int amdgpu_ttm_clear_buffer(struct amdgp
goto err;
r = amdgpu_ttm_fill_mem(ring, 0, addr, size, resv,
- &next, true, true);
+ &next, true, true,
+ AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER);
if (r)
goto err;
@@ -2361,7 +2366,8 @@ int amdgpu_fill_buffer(struct amdgpu_bo
uint32_t src_data,
struct dma_resv *resv,
struct dma_fence **f,
- bool delayed)
+ bool delayed,
+ u64 k_job_id)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
@@ -2390,7 +2396,7 @@ int amdgpu_fill_buffer(struct amdgpu_bo
goto error;
r = amdgpu_ttm_fill_mem(ring, src_data, to, cur_size, resv,
- &next, true, delayed);
+ &next, true, delayed, k_job_id);
if (r)
goto error;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -180,7 +180,8 @@ int amdgpu_fill_buffer(struct amdgpu_bo
uint32_t src_data,
struct dma_resv *resv,
struct dma_fence **fence,
- bool delayed);
+ bool delayed,
+ u64 k_job_id);
int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo);
void amdgpu_ttm_recover_gart(struct ttm_buffer_object *tbo);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -1164,7 +1164,8 @@ static int amdgpu_uvd_send_msg(struct am
r = amdgpu_job_alloc_with_ib(ring->adev, &adev->uvd.entity,
AMDGPU_FENCE_OWNER_UNDEFINED,
64, direct ? AMDGPU_IB_POOL_DIRECT :
- AMDGPU_IB_POOL_DELAYED, &job);
+ AMDGPU_IB_POOL_DELAYED, &job,
+ AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
@@ -449,7 +449,7 @@ static int amdgpu_vce_get_create_msg(str
r = amdgpu_job_alloc_with_ib(ring->adev, &ring->adev->vce.entity,
AMDGPU_FENCE_OWNER_UNDEFINED,
ib_size_dw * 4, AMDGPU_IB_POOL_DIRECT,
- &job);
+ &job, AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
@@ -540,7 +540,8 @@ static int amdgpu_vce_get_destroy_msg(st
AMDGPU_FENCE_OWNER_UNDEFINED,
ib_size_dw * 4,
direct ? AMDGPU_IB_POOL_DIRECT :
- AMDGPU_IB_POOL_DELAYED, &job);
+ AMDGPU_IB_POOL_DELAYED, &job,
+ AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -553,7 +553,7 @@ static int amdgpu_vcn_dec_send_msg(struc
r = amdgpu_job_alloc_with_ib(ring->adev, NULL, NULL,
64, AMDGPU_IB_POOL_DIRECT,
- &job);
+ &job, AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
goto err;
@@ -733,7 +733,7 @@ static int amdgpu_vcn_dec_sw_send_msg(st
r = amdgpu_job_alloc_with_ib(ring->adev, NULL, NULL,
ib_size_dw * 4, AMDGPU_IB_POOL_DIRECT,
- &job);
+ &job, AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
goto err;
@@ -863,7 +863,7 @@ static int amdgpu_vcn_enc_get_create_msg
r = amdgpu_job_alloc_with_ib(ring->adev, NULL, NULL,
ib_size_dw * 4, AMDGPU_IB_POOL_DIRECT,
- &job);
+ &job, AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
@@ -930,7 +930,7 @@ static int amdgpu_vcn_enc_get_destroy_ms
r = amdgpu_job_alloc_with_ib(ring->adev, NULL, NULL,
ib_size_dw * 4, AMDGPU_IB_POOL_DIRECT,
- &job);
+ &job, AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -838,7 +838,8 @@ int amdgpu_vm_update_pdes(struct amdgpu_
params.vm = vm;
params.immediate = immediate;
- r = vm->update_funcs->prepare(¶ms, NULL);
+ r = vm->update_funcs->prepare(¶ms, NULL,
+ AMDGPU_KERNEL_JOB_ID_VM_UPDATE_PDES);
if (r)
goto error;
@@ -1007,7 +1008,8 @@ int amdgpu_vm_update_range(struct amdgpu
dma_fence_put(tmp);
}
- r = vm->update_funcs->prepare(¶ms, sync);
+ r = vm->update_funcs->prepare(¶ms, sync,
+ AMDGPU_KERNEL_JOB_ID_VM_UPDATE_RANGE);
if (r)
goto error_free;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -305,7 +305,7 @@ struct amdgpu_vm_update_params {
struct amdgpu_vm_update_funcs {
int (*map_table)(struct amdgpu_bo_vm *bo);
int (*prepare)(struct amdgpu_vm_update_params *p,
- struct amdgpu_sync *sync);
+ struct amdgpu_sync *sync, u64 k_job_id);
int (*update)(struct amdgpu_vm_update_params *p,
struct amdgpu_bo_vm *bo, uint64_t pe, uint64_t addr,
unsigned count, uint32_t incr, uint64_t flags);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c
@@ -42,12 +42,14 @@ static int amdgpu_vm_cpu_map_table(struc
*
* @p: see amdgpu_vm_update_params definition
* @sync: sync obj with fences to wait on
+ * @k_job_id: the id for tracing/debug purposes
*
* Returns:
* Negativ errno, 0 for success.
*/
static int amdgpu_vm_cpu_prepare(struct amdgpu_vm_update_params *p,
- struct amdgpu_sync *sync)
+ struct amdgpu_sync *sync,
+ u64 k_job_id)
{
if (!sync)
return 0;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
@@ -26,6 +26,7 @@
#include "amdgpu.h"
#include "amdgpu_trace.h"
#include "amdgpu_vm.h"
+#include "amdgpu_job.h"
/*
* amdgpu_vm_pt_cursor - state for for_each_amdgpu_vm_pt
@@ -395,7 +396,8 @@ int amdgpu_vm_pt_clear(struct amdgpu_dev
params.vm = vm;
params.immediate = immediate;
- r = vm->update_funcs->prepare(¶ms, NULL);
+ r = vm->update_funcs->prepare(¶ms, NULL,
+ AMDGPU_KERNEL_JOB_ID_VM_PT_CLEAR);
if (r)
goto exit;
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c
@@ -40,7 +40,7 @@ static int amdgpu_vm_sdma_map_table(stru
/* Allocate a new job for @count PTE updates */
static int amdgpu_vm_sdma_alloc_job(struct amdgpu_vm_update_params *p,
- unsigned int count)
+ unsigned int count, u64 k_job_id)
{
enum amdgpu_ib_pool_type pool = p->immediate ? AMDGPU_IB_POOL_IMMEDIATE
: AMDGPU_IB_POOL_DELAYED;
@@ -56,7 +56,7 @@ static int amdgpu_vm_sdma_alloc_job(stru
ndw = min(ndw, AMDGPU_VM_SDMA_MAX_NUM_DW);
r = amdgpu_job_alloc_with_ib(p->adev, entity, AMDGPU_FENCE_OWNER_VM,
- ndw * 4, pool, &p->job);
+ ndw * 4, pool, &p->job, k_job_id);
if (r)
return r;
@@ -69,16 +69,17 @@ static int amdgpu_vm_sdma_alloc_job(stru
*
* @p: see amdgpu_vm_update_params definition
* @sync: amdgpu_sync object with fences to wait for
+ * @k_job_id: identifier of the job, for tracing purpose
*
* Returns:
* Negativ errno, 0 for success.
*/
static int amdgpu_vm_sdma_prepare(struct amdgpu_vm_update_params *p,
- struct amdgpu_sync *sync)
+ struct amdgpu_sync *sync, u64 k_job_id)
{
int r;
- r = amdgpu_vm_sdma_alloc_job(p, 0);
+ r = amdgpu_vm_sdma_alloc_job(p, 0, k_job_id);
if (r)
return r;
@@ -249,7 +250,8 @@ static int amdgpu_vm_sdma_update(struct
if (r)
return r;
- r = amdgpu_vm_sdma_alloc_job(p, count);
+ r = amdgpu_vm_sdma_alloc_job(p, count,
+ AMDGPU_KERNEL_JOB_ID_VM_UPDATE);
if (r)
return r;
}
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
@@ -217,7 +217,8 @@ static int uvd_v6_0_enc_get_create_msg(s
int i, r;
r = amdgpu_job_alloc_with_ib(ring->adev, NULL, NULL, ib_size_dw * 4,
- AMDGPU_IB_POOL_DIRECT, &job);
+ AMDGPU_IB_POOL_DIRECT, &job,
+ AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
@@ -281,7 +282,8 @@ static int uvd_v6_0_enc_get_destroy_msg(
int i, r;
r = amdgpu_job_alloc_with_ib(ring->adev, NULL, NULL, ib_size_dw * 4,
- AMDGPU_IB_POOL_DIRECT, &job);
+ AMDGPU_IB_POOL_DIRECT, &job,
+ AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c
@@ -225,7 +225,8 @@ static int uvd_v7_0_enc_get_create_msg(s
int i, r;
r = amdgpu_job_alloc_with_ib(ring->adev, NULL, NULL, ib_size_dw * 4,
- AMDGPU_IB_POOL_DIRECT, &job);
+ AMDGPU_IB_POOL_DIRECT, &job,
+ AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
@@ -288,7 +289,8 @@ static int uvd_v7_0_enc_get_destroy_msg(
int i, r;
r = amdgpu_job_alloc_with_ib(ring->adev, NULL, NULL, ib_size_dw * 4,
- AMDGPU_IB_POOL_DIRECT, &job);
+ AMDGPU_IB_POOL_DIRECT, &job,
+ AMDGPU_KERNEL_JOB_ID_VCN_RING_TEST);
if (r)
return r;
--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
@@ -68,7 +68,8 @@ svm_migrate_gart_map(struct amdgpu_ring
AMDGPU_FENCE_OWNER_UNDEFINED,
num_dw * 4 + num_bytes,
AMDGPU_IB_POOL_DELAYED,
- &job);
+ &job,
+ AMDGPU_KERNEL_JOB_ID_KFD_GART_MAP);
if (r)
return r;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 313/337] drm/amdgpu/gfx: fix cleaner shader IB buffer overflow
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (310 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 312/337] drm/amdgpu: give each kernel job a unique id Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 314/337] drm/fb-helper: Allocate and release fb_info in single place Greg Kroah-Hartman
` (31 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Lijo Lazar, Asad Kamal, Alex Deucher,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Asad Kamal <asad.kamal@amd.com>
[ Upstream commit 3e864bf2a32a1cbdf1e0f9c5a5a4176e8575f4a3 ]
The cleaner shader sysfs path allocates a 16-dword (64 byte) IB but
incorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is
0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a
kernel page fault.
The IB only needs to be a minimal NOP shell to schedule the job; the
cleaner shader itself is emitted on the ring via emit_cleaner_shader().
Fill 16 dwords to match the allocation.
v2: Use ib_size_dw variable (Lijo)
Fixes: d361ad5d2fc0 ("drm/amdgpu: Add sysfs interface for running cleaner shader")
Suggested-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit bf21af331ebf72d0935fd70c73192414a422c03a)
CC: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -1426,12 +1426,13 @@ static int amdgpu_gfx_run_cleaner_shader
struct amdgpu_device *adev = ring->adev;
struct drm_gpu_scheduler *sched = &ring->sched;
struct drm_sched_entity entity;
+ unsigned int ib_size_dw = 16;
static atomic_t counter;
struct dma_fence *f;
struct amdgpu_job *job;
struct amdgpu_ib *ib;
void *owner;
- int i, r;
+ int r;
/* Initialize the scheduler entity */
r = drm_sched_entity_init(&entity, DRM_SCHED_PRIORITY_NORMAL,
@@ -1449,7 +1450,7 @@ static int amdgpu_gfx_run_cleaner_shader
owner = (void *)(unsigned long)atomic_inc_return(&counter);
r = amdgpu_job_alloc_with_ib(ring->adev, &entity, owner,
- 64, 0, &job,
+ ib_size_dw * sizeof(uint32_t), 0, &job,
AMDGPU_KERNEL_JOB_ID_CLEANER_SHADER);
if (r)
goto err;
@@ -1457,9 +1458,8 @@ static int amdgpu_gfx_run_cleaner_shader
job->enforce_isolation = true;
ib = &job->ibs[0];
- for (i = 0; i <= ring->funcs->align_mask; ++i)
- ib->ptr[i] = ring->funcs->nop;
- ib->length_dw = ring->funcs->align_mask + 1;
+ memset32(ib->ptr, ring->funcs->nop, ib_size_dw);
+ ib->length_dw = ib_size_dw;
f = amdgpu_job_submit(job);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 314/337] drm/fb-helper: Allocate and release fb_info in single place
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (311 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 313/337] drm/amdgpu/gfx: fix cleaner shader IB buffer overflow Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 315/337] drm/tegra: fbdev: Remove offset into framebuffer memory Greg Kroah-Hartman
` (30 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann,
Javier Martinez Canillas, Sasha Levin, Christian König,
Dmitry Baryshkov
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Zimmermann <tzimmermann@suse.de>
[ Upstream commit 63c971af40365ee706c7e24f6a7900d693518f09 ]
Move the calls to drm_fb_helper_alloc_info() from drivers into a
single place in fbdev helpers. Allocates struct fb_info for a new
framebuffer device. Then call drm_fb_helper_single_fb_probe() to
create an fbdev screen buffer. Also release the instance on errors
by calling drm_fb_helper_release_info().
Simplifies the code and fixes the error cleanup for some of the
drivers.
Regular release of the struct fb_info instance still happens in
drm_fb_helper_fini() as before.
v2:
- remove error rollback in driver implementations (kernel test robot)
- initialize info in TTM implementation (kernel test robot)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Christian König <christian.koenig@amd.com> # radeon
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> # msm
Acked-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20251027081245.80262-1-tzimmermann@suse.de
Stable-dep-of: a18b6e30ecd6 ("drm/tegra: fbdev: Remove offset into framebuffer memory")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/armada/armada_fbdev.c | 12 --------
drivers/gpu/drm/drm_fb_helper.c | 39 ++++++++---------------------
drivers/gpu/drm/drm_fbdev_dma.c | 12 +-------
drivers/gpu/drm/drm_fbdev_shmem.c | 12 +-------
drivers/gpu/drm/drm_fbdev_ttm.c | 12 +-------
drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 9 ------
drivers/gpu/drm/gma500/fbdev.c | 13 ---------
drivers/gpu/drm/i915/display/intel_fbdev.c | 9 ------
drivers/gpu/drm/msm/msm_fbdev.c | 9 ------
drivers/gpu/drm/omapdrm/omap_fbdev.c | 9 ------
drivers/gpu/drm/radeon/radeon_fbdev.c | 13 ---------
drivers/gpu/drm/tegra/fbdev.c | 9 ------
include/drm/drm_fb_helper.h | 12 --------
13 files changed, 26 insertions(+), 144 deletions(-)
--- a/drivers/gpu/drm/armada/armada_fbdev.c
+++ b/drivers/gpu/drm/armada/armada_fbdev.c
@@ -43,10 +43,10 @@ static int armada_fbdev_create(struct dr
struct drm_fb_helper_surface_size *sizes)
{
struct drm_device *dev = fbh->dev;
+ struct fb_info *info = fbh->info;
struct drm_mode_fb_cmd2 mode;
struct armada_framebuffer *dfb;
struct armada_gem_object *obj;
- struct fb_info *info;
int size, ret;
void *ptr;
@@ -87,12 +87,6 @@ static int armada_fbdev_create(struct dr
if (IS_ERR(dfb))
return PTR_ERR(dfb);
- info = drm_fb_helper_alloc_info(fbh);
- if (IS_ERR(info)) {
- ret = PTR_ERR(info);
- goto err_fballoc;
- }
-
info->fbops = &armada_fb_ops;
info->fix.smem_start = obj->phys_addr;
info->fix.smem_len = obj->obj.size;
@@ -107,10 +101,6 @@ static int armada_fbdev_create(struct dr
(unsigned long long)obj->phys_addr);
return 0;
-
- err_fballoc:
- dfb->fb.funcs->destroy(&dfb->fb);
- return ret;
}
static int armada_fb_probe(struct drm_fb_helper *fbh,
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -485,20 +485,7 @@ int drm_fb_helper_init(struct drm_device
}
EXPORT_SYMBOL(drm_fb_helper_init);
-/**
- * drm_fb_helper_alloc_info - allocate fb_info and some of its members
- * @fb_helper: driver-allocated fbdev helper
- *
- * A helper to alloc fb_info and the member cmap. Called by the driver
- * within the struct &drm_driver.fbdev_probe callback function. Drivers do
- * not need to release the allocated fb_info structure themselves, this is
- * automatically done when calling drm_fb_helper_fini().
- *
- * RETURNS:
- * fb_info pointer if things went okay, pointer containing error code
- * otherwise
- */
-struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper)
+static struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper)
{
struct device *dev = fb_helper->dev->dev;
struct fb_info *info;
@@ -525,17 +512,8 @@ err_release:
framebuffer_release(info);
return ERR_PTR(ret);
}
-EXPORT_SYMBOL(drm_fb_helper_alloc_info);
-/**
- * drm_fb_helper_release_info - release fb_info and its members
- * @fb_helper: driver-allocated fbdev helper
- *
- * A helper to release fb_info and the member cmap. Drivers do not
- * need to release the allocated fb_info structure themselves, this is
- * automatically done when calling drm_fb_helper_fini().
- */
-void drm_fb_helper_release_info(struct drm_fb_helper *fb_helper)
+static void drm_fb_helper_release_info(struct drm_fb_helper *fb_helper)
{
struct fb_info *info = fb_helper->info;
@@ -548,7 +526,6 @@ void drm_fb_helper_release_info(struct d
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
-EXPORT_SYMBOL(drm_fb_helper_release_info);
/**
* drm_fb_helper_unregister_info - unregister fb_info framebuffer device
@@ -1803,6 +1780,11 @@ __drm_fb_helper_initial_config_and_unloc
height = dev->mode_config.max_height;
drm_client_modeset_probe(&fb_helper->client, width, height);
+
+ info = drm_fb_helper_alloc_info(fb_helper);
+ if (IS_ERR(info))
+ return PTR_ERR(info);
+
ret = drm_fb_helper_single_fb_probe(fb_helper);
if (ret < 0) {
if (ret == -EAGAIN) {
@@ -1811,13 +1793,12 @@ __drm_fb_helper_initial_config_and_unloc
}
mutex_unlock(&fb_helper->lock);
- return ret;
+ goto err_drm_fb_helper_release_info;
}
drm_setup_crtcs_fb(fb_helper);
fb_helper->deferred_setup = false;
- info = fb_helper->info;
info->var.pixclock = 0;
/* Need to drop locks to avoid recursive deadlock in
@@ -1840,6 +1821,10 @@ __drm_fb_helper_initial_config_and_unloc
mutex_unlock(&kernel_fb_helper_lock);
return 0;
+
+err_drm_fb_helper_release_info:
+ drm_fb_helper_release_info(fb_helper);
+ return ret;
}
/**
--- a/drivers/gpu/drm/drm_fbdev_dma.c
+++ b/drivers/gpu/drm/drm_fbdev_dma.c
@@ -280,9 +280,9 @@ int drm_fbdev_dma_driver_fbdev_probe(str
{
struct drm_client_dev *client = &fb_helper->client;
struct drm_device *dev = fb_helper->dev;
+ struct fb_info *info = fb_helper->info;
struct drm_client_buffer *buffer;
struct drm_framebuffer *fb;
- struct fb_info *info;
u32 format;
struct iosys_map map;
int ret;
@@ -312,12 +312,6 @@ int drm_fbdev_dma_driver_fbdev_probe(str
fb_helper->buffer = buffer;
fb_helper->fb = fb;
- info = drm_fb_helper_alloc_info(fb_helper);
- if (IS_ERR(info)) {
- ret = PTR_ERR(info);
- goto err_drm_client_buffer_vunmap;
- }
-
drm_fb_helper_fill_info(info, fb_helper, sizes);
if (fb->funcs->dirty)
@@ -325,12 +319,10 @@ int drm_fbdev_dma_driver_fbdev_probe(str
else
ret = drm_fbdev_dma_driver_fbdev_probe_tail(fb_helper, sizes);
if (ret)
- goto err_drm_fb_helper_release_info;
+ goto err_drm_client_buffer_vunmap;
return 0;
-err_drm_fb_helper_release_info:
- drm_fb_helper_release_info(fb_helper);
err_drm_client_buffer_vunmap:
fb_helper->fb = NULL;
fb_helper->buffer = NULL;
--- a/drivers/gpu/drm/drm_fbdev_shmem.c
+++ b/drivers/gpu/drm/drm_fbdev_shmem.c
@@ -110,10 +110,10 @@ static int drm_fbdev_shmem_helper_fb_pro
{
struct drm_client_dev *client = &fb_helper->client;
struct drm_device *dev = fb_helper->dev;
+ struct fb_info *info = fb_helper->info;
struct drm_client_buffer *buffer;
struct drm_gem_shmem_object *shmem;
struct drm_framebuffer *fb;
- struct fb_info *info;
u32 format;
struct iosys_map map;
int ret;
@@ -142,12 +142,6 @@ static int drm_fbdev_shmem_helper_fb_pro
fb_helper->buffer = buffer;
fb_helper->fb = fb;
- info = drm_fb_helper_alloc_info(fb_helper);
- if (IS_ERR(info)) {
- ret = PTR_ERR(info);
- goto err_drm_client_buffer_vunmap;
- }
-
drm_fb_helper_fill_info(info, fb_helper, sizes);
info->fbops = &drm_fbdev_shmem_fb_ops;
@@ -168,12 +162,10 @@ static int drm_fbdev_shmem_helper_fb_pro
info->fbdefio = &fb_helper->fbdefio;
ret = fb_deferred_io_init(info);
if (ret)
- goto err_drm_fb_helper_release_info;
+ goto err_drm_client_buffer_vunmap;
return 0;
-err_drm_fb_helper_release_info:
- drm_fb_helper_release_info(fb_helper);
err_drm_client_buffer_vunmap:
fb_helper->fb = NULL;
fb_helper->buffer = NULL;
--- a/drivers/gpu/drm/drm_fbdev_ttm.c
+++ b/drivers/gpu/drm/drm_fbdev_ttm.c
@@ -185,8 +185,8 @@ int drm_fbdev_ttm_driver_fbdev_probe(str
{
struct drm_client_dev *client = &fb_helper->client;
struct drm_device *dev = fb_helper->dev;
+ struct fb_info *info = fb_helper->info;
struct drm_client_buffer *buffer;
- struct fb_info *info;
size_t screen_size;
void *screen_buffer;
u32 format;
@@ -214,12 +214,6 @@ int drm_fbdev_ttm_driver_fbdev_probe(str
goto err_drm_client_framebuffer_delete;
}
- info = drm_fb_helper_alloc_info(fb_helper);
- if (IS_ERR(info)) {
- ret = PTR_ERR(info);
- goto err_vfree;
- }
-
drm_fb_helper_fill_info(info, fb_helper, sizes);
info->fbops = &drm_fbdev_ttm_fb_ops;
@@ -236,12 +230,10 @@ int drm_fbdev_ttm_driver_fbdev_probe(str
info->fbdefio = &fb_helper->fbdefio;
ret = fb_deferred_io_init(info);
if (ret)
- goto err_drm_fb_helper_release_info;
+ goto err_vfree;
return 0;
-err_drm_fb_helper_release_info:
- drm_fb_helper_release_info(fb_helper);
err_vfree:
vfree(screen_buffer);
err_drm_client_framebuffer_delete:
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -60,18 +60,11 @@ static int exynos_drm_fbdev_update(struc
struct drm_fb_helper_surface_size *sizes,
struct exynos_drm_gem *exynos_gem)
{
- struct fb_info *fbi;
+ struct fb_info *fbi = helper->info;
struct drm_framebuffer *fb = helper->fb;
unsigned int size = fb->width * fb->height * fb->format->cpp[0];
unsigned long offset;
- fbi = drm_fb_helper_alloc_info(helper);
- if (IS_ERR(fbi)) {
- DRM_DEV_ERROR(to_dma_dev(helper->dev),
- "failed to allocate fb info.\n");
- return PTR_ERR(fbi);
- }
-
fbi->fbops = &exynos_drm_fb_ops;
drm_fb_helper_fill_info(fbi, helper, sizes);
--- a/drivers/gpu/drm/gma500/fbdev.c
+++ b/drivers/gpu/drm/gma500/fbdev.c
@@ -110,7 +110,7 @@ static int psb_fbdev_fb_probe(struct drm
struct drm_device *dev = fb_helper->dev;
struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
struct pci_dev *pdev = to_pci_dev(dev->dev);
- struct fb_info *info;
+ struct fb_info *info = fb_helper->info;
struct drm_framebuffer *fb;
struct drm_mode_fb_cmd2 mode_cmd = { };
int size;
@@ -165,12 +165,6 @@ static int psb_fbdev_fb_probe(struct drm
fb_helper->fb = fb;
- info = drm_fb_helper_alloc_info(fb_helper);
- if (IS_ERR(info)) {
- ret = PTR_ERR(info);
- goto err_drm_framebuffer_unregister_private;
- }
-
info->fbops = &psb_fbdev_fb_ops;
/* Accessed stolen memory directly */
@@ -194,11 +188,6 @@ static int psb_fbdev_fb_probe(struct drm
return 0;
-err_drm_framebuffer_unregister_private:
- drm_framebuffer_unregister_private(fb);
- fb->obj[0] = NULL;
- drm_framebuffer_cleanup(fb);
- kfree(fb);
err_drm_gem_object_put:
drm_gem_object_put(obj);
return ret;
--- a/drivers/gpu/drm/i915/display/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/display/intel_fbdev.c
@@ -183,7 +183,7 @@ static int intelfb_create(struct drm_fb_
.type = I915_GTT_VIEW_NORMAL,
};
intel_wakeref_t wakeref;
- struct fb_info *info;
+ struct fb_info *info = helper->info;
struct i915_vma *vma;
unsigned long flags = 0;
bool prealloc = false;
@@ -236,13 +236,6 @@ static int intelfb_create(struct drm_fb_
goto out_unlock;
}
- info = drm_fb_helper_alloc_info(helper);
- if (IS_ERR(info)) {
- drm_err(&dev_priv->drm, "Failed to allocate fb_info (%pe)\n", info);
- ret = PTR_ERR(info);
- goto out_unpin;
- }
-
ifbdev->helper.fb = &fb->base;
info->fbops = &intelfb_ops;
--- a/drivers/gpu/drm/msm/msm_fbdev.c
+++ b/drivers/gpu/drm/msm/msm_fbdev.c
@@ -70,9 +70,9 @@ static int msm_fbdev_create(struct drm_f
{
struct drm_device *dev = helper->dev;
struct msm_drm_private *priv = dev->dev_private;
+ struct fb_info *fbi = helper->info;
struct drm_framebuffer *fb = NULL;
struct drm_gem_object *bo;
- struct fb_info *fbi = NULL;
uint64_t paddr;
uint32_t format;
int ret, pitch;
@@ -105,13 +105,6 @@ static int msm_fbdev_create(struct drm_f
goto fail;
}
- fbi = drm_fb_helper_alloc_info(helper);
- if (IS_ERR(fbi)) {
- DRM_DEV_ERROR(dev->dev, "failed to allocate fb info\n");
- ret = PTR_ERR(fbi);
- goto fail;
- }
-
DBG("fbi=%p, dev=%p", fbi, dev);
helper->fb = fb;
--- a/drivers/gpu/drm/omapdrm/omap_fbdev.c
+++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c
@@ -131,9 +131,9 @@ static int omap_fbdev_create(struct drm_
struct omap_fbdev *fbdev = to_omap_fbdev(helper);
struct drm_device *dev = helper->dev;
struct omap_drm_private *priv = dev->dev_private;
+ struct fb_info *fbi = helper->info;
struct drm_framebuffer *fb = NULL;
union omap_gem_size gsize;
- struct fb_info *fbi = NULL;
struct drm_mode_fb_cmd2 mode_cmd = {0};
struct drm_gem_object *bo;
dma_addr_t dma_addr;
@@ -199,13 +199,6 @@ static int omap_fbdev_create(struct drm_
goto fail;
}
- fbi = drm_fb_helper_alloc_info(helper);
- if (IS_ERR(fbi)) {
- dev_err(dev->dev, "failed to allocate fb info\n");
- ret = PTR_ERR(fbi);
- goto fail;
- }
-
DBG("fbi=%p, dev=%p", fbi, dev);
helper->fb = fb;
--- a/drivers/gpu/drm/radeon/radeon_fbdev.c
+++ b/drivers/gpu/drm/radeon/radeon_fbdev.c
@@ -207,7 +207,7 @@ static int radeon_fbdev_fb_helper_fb_pro
{
struct radeon_device *rdev = fb_helper->dev->dev_private;
struct drm_mode_fb_cmd2 mode_cmd = { };
- struct fb_info *info;
+ struct fb_info *info = fb_helper->info;
struct drm_gem_object *gobj;
struct radeon_bo *rbo;
struct drm_framebuffer *fb;
@@ -245,13 +245,6 @@ static int radeon_fbdev_fb_helper_fb_pro
/* setup helper */
fb_helper->fb = fb;
- /* okay we have an object now allocate the framebuffer */
- info = drm_fb_helper_alloc_info(fb_helper);
- if (IS_ERR(info)) {
- ret = PTR_ERR(info);
- goto err_drm_framebuffer_unregister_private;
- }
-
info->fbops = &radeon_fbdev_fb_ops;
/* radeon resume is fragile and needs a vt switch to help it along */
@@ -277,10 +270,6 @@ static int radeon_fbdev_fb_helper_fb_pro
return 0;
-err_drm_framebuffer_unregister_private:
- fb_helper->fb = NULL;
- drm_framebuffer_unregister_private(fb);
- drm_framebuffer_cleanup(fb);
err_kfree:
kfree(fb);
err_radeon_fbdev_destroy_pinned_object:
--- a/drivers/gpu/drm/tegra/fbdev.c
+++ b/drivers/gpu/drm/tegra/fbdev.c
@@ -72,10 +72,10 @@ static int tegra_fbdev_probe(struct drm_
struct tegra_drm *tegra = helper->dev->dev_private;
struct drm_device *drm = helper->dev;
struct drm_mode_fb_cmd2 cmd = { 0 };
+ struct fb_info *info = helper->info;
unsigned int bytes_per_pixel;
struct drm_framebuffer *fb;
unsigned long offset;
- struct fb_info *info;
struct tegra_bo *bo;
size_t size;
int err;
@@ -96,13 +96,6 @@ static int tegra_fbdev_probe(struct drm_
if (IS_ERR(bo))
return PTR_ERR(bo);
- info = drm_fb_helper_alloc_info(helper);
- if (IS_ERR(info)) {
- dev_err(drm->dev, "failed to allocate framebuffer info\n");
- drm_gem_object_put(&bo->gem);
- return PTR_ERR(info);
- }
-
fb = tegra_fb_alloc(drm, &cmd, &bo, 1);
if (IS_ERR(fb)) {
err = PTR_ERR(fb);
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -246,8 +246,6 @@ int drm_fb_helper_check_var(struct fb_va
int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
-struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper);
-void drm_fb_helper_release_info(struct drm_fb_helper *fb_helper);
void drm_fb_helper_unregister_info(struct drm_fb_helper *fb_helper);
void drm_fb_helper_fill_info(struct fb_info *info,
struct drm_fb_helper *fb_helper,
@@ -328,16 +326,6 @@ drm_fb_helper_restore_fbdev_mode_unlocke
return 0;
}
-static inline struct fb_info *
-drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper)
-{
- return NULL;
-}
-
-static inline void drm_fb_helper_release_info(struct drm_fb_helper *fb_helper)
-{
-}
-
static inline void drm_fb_helper_unregister_info(struct drm_fb_helper *fb_helper)
{
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 315/337] drm/tegra: fbdev: Remove offset into framebuffer memory
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (312 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 314/337] drm/fb-helper: Allocate and release fb_info in single place Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 316/337] drm/exec: Remove the index parameter from drm_exec_for_each_locked_obj[_reverse] Greg Kroah-Hartman
` (29 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann, dri-devel,
linux-tegra, Thierry Reding, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Zimmermann <tzimmermann@suse.de>
[ Upstream commit a18b6e30ecd69096beda4a0c96d2570900c3879a ]
The screen_buffer field in struct fb_info contains the kernel address
of the first byte of framebuffer memory. Do not add the display offset.
This offset only describes scrolling during scanout.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: de2ba664c30f ("gpu: host1x: drm: Add memory manager and fb")
Cc: dri-devel@lists.freedesktop.org
Cc: linux-tegra@vger.kernel.org
Cc: <stable@vger.kernel.org> # v3.10+
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patch.msgid.link/20260421073646.144712-3-tzimmermann@suse.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/tegra/fbdev.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/tegra/fbdev.c
+++ b/drivers/gpu/drm/tegra/fbdev.c
@@ -75,7 +75,6 @@ static int tegra_fbdev_probe(struct drm_
struct fb_info *info = helper->info;
unsigned int bytes_per_pixel;
struct drm_framebuffer *fb;
- unsigned long offset;
struct tegra_bo *bo;
size_t size;
int err;
@@ -112,9 +111,6 @@ static int tegra_fbdev_probe(struct drm_
drm_fb_helper_fill_info(info, helper, sizes);
- offset = info->var.xoffset * bytes_per_pixel +
- info->var.yoffset * fb->pitches[0];
-
if (bo->pages) {
bo->vaddr = vmap(bo->pages, bo->num_pages, VM_MAP,
pgprot_writecombine(PAGE_KERNEL));
@@ -126,9 +122,9 @@ static int tegra_fbdev_probe(struct drm_
}
info->flags |= FBINFO_VIRTFB;
- info->screen_buffer = bo->vaddr + offset;
+ info->screen_buffer = bo->vaddr;
info->screen_size = size;
- info->fix.smem_start = (unsigned long)(bo->iova + offset);
+ info->fix.smem_start = (unsigned long)(bo->iova);
info->fix.smem_len = size;
return 0;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 316/337] drm/exec: Remove the index parameter from drm_exec_for_each_locked_obj[_reverse]
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (313 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 315/337] drm/tegra: fbdev: Remove offset into framebuffer memory Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 317/337] drm/xe: Wait on external BO kernel fences in exec IOCTL Greg Kroah-Hartman
` (28 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Hellström,
Christian König, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Hellström <thomas.hellstrom@linux.intel.com>
[ Upstream commit ce44b78512e9102aea54ff6b6e521d6c8de9f31c ]
Nobody makes any use of it. Possible internal future users can
instead use the _index variable. External users shouldn't use
it since the array it's pointing into is internal drm_exec state.
v2:
- Use a unique id for the loop variable (Christian)
Assisted-by: GitHub Copilot:claude-sonnet-4.6
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patch.msgid.link/20260520101616.41284-2-thomas.hellstrom@linux.intel.com
Stable-dep-of: af80e2bfde93 ("drm/xe: Wait on external BO kernel fences in exec IOCTL")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 9 +++------
drivers/gpu/drm/drm_exec.c | 6 ++----
drivers/gpu/drm/drm_gpuvm.c | 3 +--
drivers/gpu/drm/xe/xe_vm.c | 3 +--
include/drm/drm_exec.h | 20 ++++++++++++--------
5 files changed, 19 insertions(+), 22 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -848,7 +848,6 @@ static int amdgpu_cs_parser_bos(struct a
struct amdgpu_vm *vm = &fpriv->vm;
struct amdgpu_bo_list_entry *e;
struct drm_gem_object *obj;
- unsigned long index;
unsigned int i;
int r;
@@ -969,7 +968,7 @@ static int amdgpu_cs_parser_bos(struct a
goto out_free_user_pages;
}
- drm_exec_for_each_locked_object(&p->exec, index, obj) {
+ drm_exec_for_each_locked_object(&p->exec, obj) {
r = amdgpu_cs_bo_validate(p, gem_to_amdgpu_bo(obj));
if (unlikely(r))
goto out_free_user_pages;
@@ -1207,7 +1206,6 @@ static int amdgpu_cs_sync_rings(struct a
struct drm_gpu_scheduler *sched;
struct drm_gem_object *obj;
struct dma_fence *fence;
- unsigned long index;
unsigned int i;
int r;
@@ -1218,7 +1216,7 @@ static int amdgpu_cs_sync_rings(struct a
return r;
}
- drm_exec_for_each_locked_object(&p->exec, index, obj) {
+ drm_exec_for_each_locked_object(&p->exec, obj) {
struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
struct dma_resv *resv = bo->tbo.base.resv;
@@ -1286,7 +1284,6 @@ static int amdgpu_cs_submit(struct amdgp
struct amdgpu_vm *vm = &fpriv->vm;
struct amdgpu_bo_list_entry *e;
struct drm_gem_object *gobj;
- unsigned long index;
unsigned int i;
uint64_t seq;
int r;
@@ -1337,7 +1334,7 @@ static int amdgpu_cs_submit(struct amdgp
}
p->fence = dma_fence_get(&leader->base.s_fence->finished);
- drm_exec_for_each_locked_object(&p->exec, index, gobj) {
+ drm_exec_for_each_locked_object(&p->exec, gobj) {
ttm_bo_move_to_lru_tail_unlocked(&gem_to_amdgpu_bo(gobj)->tbo);
--- a/drivers/gpu/drm/drm_exec.c
+++ b/drivers/gpu/drm/drm_exec.c
@@ -22,7 +22,6 @@
*
* struct drm_gem_object *obj;
* struct drm_exec exec;
- * unsigned long index;
* int ret;
*
* drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT);
@@ -38,7 +37,7 @@
* goto error;
* }
*
- * drm_exec_for_each_locked_object(&exec, index, obj) {
+ * drm_exec_for_each_locked_object(&exec, obj) {
* dma_resv_add_fence(obj->resv, fence, DMA_RESV_USAGE_READ);
* ...
* }
@@ -54,9 +53,8 @@
static void drm_exec_unlock_all(struct drm_exec *exec)
{
struct drm_gem_object *obj;
- unsigned long index;
- drm_exec_for_each_locked_object_reverse(exec, index, obj) {
+ drm_exec_for_each_locked_object_reverse(exec, obj) {
dma_resv_unlock(obj->resv);
drm_gem_object_put(obj);
}
--- a/drivers/gpu/drm/drm_gpuvm.c
+++ b/drivers/gpu/drm/drm_gpuvm.c
@@ -1451,9 +1451,8 @@ drm_gpuvm_resv_add_fence(struct drm_gpuv
enum dma_resv_usage extobj_usage)
{
struct drm_gem_object *obj;
- unsigned long index;
- drm_exec_for_each_locked_object(exec, index, obj) {
+ drm_exec_for_each_locked_object(exec, obj) {
dma_resv_assert_held(obj->resv);
dma_resv_add_fence(obj->resv, fence,
drm_gpuvm_is_extobj(gpuvm, obj) ?
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -418,7 +418,6 @@ int xe_vm_validate_rebind(struct xe_vm *
unsigned int num_fences)
{
struct drm_gem_object *obj;
- unsigned long index;
int ret;
do {
@@ -431,7 +430,7 @@ int xe_vm_validate_rebind(struct xe_vm *
return ret;
} while (!list_empty(&vm->gpuvm.evict.list));
- drm_exec_for_each_locked_object(exec, index, obj) {
+ drm_exec_for_each_locked_object(exec, obj) {
ret = dma_resv_reserve_fences(obj->resv, num_fences);
if (ret)
return ret;
--- a/include/drm/drm_exec.h
+++ b/include/drm/drm_exec.h
@@ -65,31 +65,35 @@ drm_exec_obj(struct drm_exec *exec, unsi
return index < exec->num_objects ? exec->objects[index] : NULL;
}
+/* Helper for drm_exec_for_each_locked_object(). Internal use only. */
+#define __drm_exec_for_each_locked_object(exec, obj, __index) \
+ for (unsigned long __index = 0; ((obj) = drm_exec_obj(exec, __index)); ++__index)
/**
* drm_exec_for_each_locked_object - iterate over all the locked objects
* @exec: drm_exec object
- * @index: unsigned long index for the iteration
* @obj: the current GEM object
*
* Iterate over all the locked GEM objects inside the drm_exec object.
*/
-#define drm_exec_for_each_locked_object(exec, index, obj) \
- for ((index) = 0; ((obj) = drm_exec_obj(exec, index)); ++(index))
+#define drm_exec_for_each_locked_object(exec, obj) \
+ __drm_exec_for_each_locked_object(exec, obj, __UNIQUE_ID(drm_exec))
+/* Helper for drm_exec_for_each_locked_object_reverse(). Internal use only. */
+#define __drm_exec_for_each_locked_object_reverse(exec, obj, __index) \
+ for (unsigned long __index = (exec)->num_objects - 1; \
+ ((obj) = drm_exec_obj(exec, __index)); --__index)
/**
* drm_exec_for_each_locked_object_reverse - iterate over all the locked
* objects in reverse locking order
* @exec: drm_exec object
- * @index: unsigned long index for the iteration
* @obj: the current GEM object
*
* Iterate over all the locked GEM objects inside the drm_exec object in
- * reverse locking order. Note that @index may go below zero and wrap,
+ * reverse locking order. Note that the internal index may wrap around,
* but that will be caught by drm_exec_obj(), returning a NULL object.
*/
-#define drm_exec_for_each_locked_object_reverse(exec, index, obj) \
- for ((index) = (exec)->num_objects - 1; \
- ((obj) = drm_exec_obj(exec, index)); --(index))
+#define drm_exec_for_each_locked_object_reverse(exec, obj) \
+ __drm_exec_for_each_locked_object_reverse(exec, obj, __UNIQUE_ID(drm_exec))
/**
* drm_exec_until_all_locked - loop until all GEM objects are locked
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 317/337] drm/xe: Wait on external BO kernel fences in exec IOCTL
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (314 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 316/337] drm/exec: Remove the index parameter from drm_exec_for_each_locked_obj[_reverse] Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 318/337] drm/i915/vrr: Check HAS_VRR() first in intel_vrr_is_capable() Greg Kroah-Hartman
` (27 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthew Brost, Matthew Auld,
Thomas Hellström, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Brost <matthew.brost@intel.com>
[ Upstream commit af80e2bfde9312c76b60cf9274248dce0410b30d ]
Before arming a user job, xe_exec_ioctl() only added the VM's
dma-resv KERNEL slot as a dependency. That slot covers rebinds and
the kernel operations of the VM's private BOs, but not external BOs
(bo->vm == NULL), which carry their kernel operations (evictions,
moves, ...) in their own dma-resv KERNEL slot.
The DMA_RESV_USAGE_KERNEL slot is the cross-driver contract for
memory management operations that must complete before the BO or its
backing store may be used: any accessor is required to wait on the
KERNEL fences before touching the resv. By skipping the external BOs'
KERNEL slots, the exec path violated that contract and could schedule
a user job while a kernel operation on an external BO mapped by the VM
was still in flight, racing against it and potentially reading or
writing memory that was being moved.
Replace the VM-only dependency with an iteration over every object
locked by the exec, adding each object's KERNEL slot as a job
dependency. This covers the VM resv (rebinds and private BOs) as well
as every external BO, mirroring the drm_gpuvm_resv_add_fence() call
that later publishes the job fence to the same set of objects.
Long-running mode continues to skip this, as before.
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@vger.kernel.org
Assisted-by: GitHub_Copilot:claude-opus-4.8
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260702215805.4011228-1-matthew.brost@intel.com
(cherry picked from commit a6b842acf3ddd1efc53a56de9260cfa718fb35e7)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/xe/xe_exec.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
--- a/drivers/gpu/drm/xe/xe_exec.c
+++ b/drivers/gpu/drm/xe/xe_exec.c
@@ -270,13 +270,23 @@ retry:
goto err_exec;
}
- /* Wait behind rebinds */
+ /*
+ * Wait behind rebinds and any kernel operations (evictions, defrag
+ * moves, ...) on the VM and all external BOs. The VM's private BOs
+ * carry their kernel ops in the VM dma-resv KERNEL slot, while each
+ * external BO carries them in its own dma-resv KERNEL slot; both are
+ * covered by iterating every object locked by the exec, mirroring the
+ * drm_gpuvm_resv_add_fence() below.
+ */
if (!xe_vm_in_lr_mode(vm)) {
- err = xe_sched_job_add_deps(job,
- xe_vm_resv(vm),
- DMA_RESV_USAGE_KERNEL);
- if (err)
- goto err_put_job;
+ struct drm_gem_object *obj;
+
+ drm_exec_for_each_locked_object(exec, obj) {
+ err = xe_sched_job_add_deps(job, obj->resv,
+ DMA_RESV_USAGE_KERNEL);
+ if (err)
+ goto err_put_job;
+ }
}
for (i = 0; i < num_syncs && !err; i++)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 318/337] drm/i915/vrr: Check HAS_VRR() first in intel_vrr_is_capable()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (315 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 317/337] drm/xe: Wait on external BO kernel fences in exec IOCTL Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 319/337] drm/i915/vrr: require valid min/max vfreq for VRR Greg Kroah-Hartman
` (26 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Ville Syrjälä,
Ankit Nautiyal, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ville Syrjälä <ville.syrjala@linux.intel.com>
[ Upstream commit 4b274b0b61ab2a529e5c22e9aa033f3028e639fc ]
There's no point in doing all the other checks in
intel_vrr_is_capable() if the platform doesn't support VRR at all
Check HAS_VRR() before wasting time on the other checks.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20251020185038.4272-23-ville.syrjala@linux.intel.com
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Stable-dep-of: f8a9262c7a6f ("drm/i915/vrr: require valid min/max vfreq for VRR")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_vrr.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -21,6 +21,9 @@ bool intel_vrr_is_capable(struct intel_c
const struct drm_display_info *info = &connector->base.display_info;
struct intel_dp *intel_dp;
+ if (!HAS_VRR(display))
+ return false;
+
/*
* DP Sink is capable of VRR video timings if
* Ignore MSA bit is set in DPCD.
@@ -43,8 +46,7 @@ bool intel_vrr_is_capable(struct intel_c
return false;
}
- return HAS_VRR(display) &&
- info->monitor_range.max_vfreq - info->monitor_range.min_vfreq > 10;
+ return info->monitor_range.max_vfreq - info->monitor_range.min_vfreq > 10;
}
bool intel_vrr_is_in_range(struct intel_connector *connector, int vrefresh)
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 319/337] drm/i915/vrr: require valid min/max vfreq for VRR
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (316 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 318/337] drm/i915/vrr: Check HAS_VRR() first in intel_vrr_is_capable() Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 320/337] drm/xe: Rename ___xe_bo_create_locked() Greg Kroah-Hartman
` (25 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Ankit Nautiyal,
Jani Nikula, Joonas Lahtinen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jani Nikula <jani.nikula@intel.com>
[ Upstream commit f8a9262c7a6fc2de9802e14b0228114f0333869e ]
Ensure the EDID provided min/max vfreq are valid. Most scenarios are
already covered (by coincidence) through the checks in
intel_vrr_is_capable() and intel_vrr_is_in_range(), but be more explicit
about it. At worst, a zero min_vfreq could lead to a division by zero in
intel_vrr_compute_vmax().
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: 117cd09ba528 ("drm/i915/display/dp: Compute VRR state in atomic_check")
Cc: stable@vger.kernel.org # v5.12+
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patch.msgid.link/20260625131040.1051272-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 1765cf59f517b02f3b0591fe5120930d08bddeb6)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_vrr.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -46,6 +46,10 @@ bool intel_vrr_is_capable(struct intel_c
return false;
}
+ if (!info->monitor_range.min_vfreq || !info->monitor_range.max_vfreq ||
+ info->monitor_range.min_vfreq > info->monitor_range.max_vfreq)
+ return false;
+
return info->monitor_range.max_vfreq - info->monitor_range.min_vfreq > 10;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 320/337] drm/xe: Rename ___xe_bo_create_locked()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (317 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 319/337] drm/i915/vrr: require valid min/max vfreq for VRR Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 321/337] drm/xe: Hold a dma-buf reference for imported BOs Greg Kroah-Hartman
` (24 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Hellström, Matthew Brost,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Hellström <thomas.hellstrom@linux.intel.com>
[ Upstream commit 550a42a8daee1b056f9b3e6c858e57451a5b315a ]
Don't start external function names with underscores.
Rename to xe_bo_init_locked().
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250908101246.65025-10-thomas.hellstrom@linux.intel.com
Stable-dep-of: 62775525a27c ("drm/xe: Hold a dma-buf reference for imported BOs")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/xe/xe_bo.c | 20 ++++++++++----------
drivers/gpu/drm/xe/xe_bo.h | 10 +++++-----
drivers/gpu/drm/xe/xe_dma_buf.c | 6 +++---
3 files changed, 18 insertions(+), 18 deletions(-)
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -1288,11 +1288,11 @@ void xe_bo_free(struct xe_bo *bo)
kfree(bo);
}
-struct xe_bo *___xe_bo_create_locked(struct xe_device *xe, struct xe_bo *bo,
- struct xe_tile *tile, struct dma_resv *resv,
- struct ttm_lru_bulk_move *bulk, size_t size,
- u16 cpu_caching, enum ttm_bo_type type,
- u32 flags)
+struct xe_bo *xe_bo_init_locked(struct xe_device *xe, struct xe_bo *bo,
+ struct xe_tile *tile, struct dma_resv *resv,
+ struct ttm_lru_bulk_move *bulk, size_t size,
+ u16 cpu_caching, enum ttm_bo_type type,
+ u32 flags)
{
struct ttm_operation_ctx ctx = {
.interruptible = true,
@@ -1487,11 +1487,11 @@ __xe_bo_create_locked(struct xe_device *
}
}
- bo = ___xe_bo_create_locked(xe, bo, tile, vm ? xe_vm_resv(vm) : NULL,
- vm && !xe_vm_in_fault_mode(vm) &&
- flags & XE_BO_FLAG_USER ?
- &vm->lru_bulk_move : NULL, size,
- cpu_caching, type, flags);
+ bo = xe_bo_init_locked(xe, bo, tile, vm ? xe_vm_resv(vm) : NULL,
+ vm && !xe_vm_in_fault_mode(vm) &&
+ flags & XE_BO_FLAG_USER ?
+ &vm->lru_bulk_move : NULL, size,
+ cpu_caching, type, flags);
if (IS_ERR(bo))
return bo;
--- a/drivers/gpu/drm/xe/xe_bo.h
+++ b/drivers/gpu/drm/xe/xe_bo.h
@@ -80,11 +80,11 @@ struct sg_table;
struct xe_bo *xe_bo_alloc(void);
void xe_bo_free(struct xe_bo *bo);
-struct xe_bo *___xe_bo_create_locked(struct xe_device *xe, struct xe_bo *bo,
- struct xe_tile *tile, struct dma_resv *resv,
- struct ttm_lru_bulk_move *bulk, size_t size,
- u16 cpu_caching, enum ttm_bo_type type,
- u32 flags);
+struct xe_bo *xe_bo_init_locked(struct xe_device *xe, struct xe_bo *bo,
+ struct xe_tile *tile, struct dma_resv *resv,
+ struct ttm_lru_bulk_move *bulk, size_t size,
+ u16 cpu_caching, enum ttm_bo_type type,
+ u32 flags);
struct xe_bo *
xe_bo_create_locked_range(struct xe_device *xe,
struct xe_tile *tile, struct xe_vm *vm,
--- a/drivers/gpu/drm/xe/xe_dma_buf.c
+++ b/drivers/gpu/drm/xe/xe_dma_buf.c
@@ -212,9 +212,9 @@ xe_dma_buf_init_obj(struct drm_device *d
int ret;
dma_resv_lock(resv, NULL);
- bo = ___xe_bo_create_locked(xe, storage, NULL, resv, NULL, dma_buf->size,
- 0, /* Will require 1way or 2way for vm_bind */
- ttm_bo_type_sg, XE_BO_FLAG_SYSTEM);
+ bo = xe_bo_init_locked(xe, storage, NULL, resv, NULL, dma_buf->size,
+ 0, /* Will require 1way or 2way for vm_bind */
+ ttm_bo_type_sg, XE_BO_FLAG_SYSTEM);
if (IS_ERR(bo)) {
ret = PTR_ERR(bo);
goto error;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 321/337] drm/xe: Hold a dma-buf reference for imported BOs
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (318 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 320/337] drm/xe: Rename ___xe_bo_create_locked() Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 322/337] drm/i915/hdcp: Move to using intel_display in intel_hdcp Greg Kroah-Hartman
` (23 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Hellstrom, Christian Konig,
Matthew Auld, Nitin Gote, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nitin Gote <nitin.r.gote@intel.com>
[ Upstream commit 62775525a27c3b0d56382e08ba81ee2d322058b6 ]
An imported dma-buf BO is created as a ttm_bo_type_sg BO whose
reservation object is the exporter's dma_buf->resv. The importer,
however, only takes a dma-buf reference after a successful
dma_buf_dynamic_attach(). Until then nothing keeps the exporter alive,
so if the exporter is freed while the BO still references its resv, a
later access to that resv is a use-after-free:
Oops: general protection fault, probably for non-canonical address
0x6b6b6b6b6b6b6b9c
Workqueue: ttm ttm_bo_delayed_delete [ttm]
RIP: 0010:mutex_can_spin_on_owner+0x3f/0xc0
This can be reached on two paths:
- dma_buf_dynamic_attach() fails, or
- ttm_bo_init_reserved() fails during BO creation.
In both cases the BO already has bo->base.resv pointing at the exporter
resv, and sg BOs are always torn down via ttm_bo_delayed_delete(), which
locks bo->base.resv asynchronously - potentially after the exporter has
been freed.
Take the dma-buf reference in xe_bo_init_locked(), before
ttm_bo_init_reserved(), so it also covers a creation failure there, and
release it in xe_ttm_bo_destroy(). The reference is held for the whole
BO lifetime, keeping the shared resv alive on every path.
v2:
- Reworked the fix to avoid creating the imported sg BO before
dma_buf_dynamic_attach() succeeds.
- Attach with importer_priv == NULL and make invalidate_mappings ignore
incomplete imports.
v3:
- Dropped the xe-side reordering approach since importer_priv must be
valid when dma_buf_dynamic_attach() publishes the attachment.
- Per Christian's suggestion on the v1 thread, keyed the check on
import_attach rather than removing the sg guard entirely.
- Fixes both xe and amdgpu in a single TTM patch.
v4:
- Moved import_attach check to after dma_resv_copy_fences() so fences
are copied before returning for successful imports (Thomas).
- Removed exporter-alive claim from commit message (Thomas).
v5:
- Add drm/xe patch to keep imported sg BOs off the LRU before attach
succeeds; the TTM fix alone is not sufficient for xe if the BO is
already LRU-visible. (Thomas)
v4 patch:
https://patchwork.freedesktop.org/patch/736663/?series=169129&rev=2
- Patch 1 (drm/ttm) carries Christian's Reviewed-by from v4.
v6:
- Reworked the fix based on Thomas' suggestion. Instead of the TTM resv
individualization (v1-v5) plus the xe off-LRU/placement handling (v5),
just hold a dma-buf reference for the imported BO lifetime so the
shared resv can never be freed while the BO still references it.
Single xe patch, no TTM change. (Thomas)
- Take the reference in xe_bo_init_locked() before ttm_bo_init_reserved()
so a TTM creation failure is covered too (Thomas).
- Dropped the v5 series (drm/ttm + drm/xe off-LRU); the off-LRU approach
also regressed in CI BAT via ttm_bo_pipeline_gutting() creating a ghost
BO that outlived the exporter.
Link to v5: https://patchwork.freedesktop.org/series/169984/
v7:
- Move changelog above --- so it stays in the commit message.
- Reorder changelog entries oldest-to-newest. (Thomas)
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/8023
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@vger.kernel.org
Cc: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Cc: Christian Konig <christian.koenig@amd.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Suggested-by: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Assisted-by: GitHub_Copilot:claude-sonnet-4.6
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Nitin Gote <nitin.r.gote@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patch.msgid.link/20260710191027.260160-2-nitin.r.gote@intel.com
(cherry picked from commit 3516f3fae6be35642f8f06f8a218da6425c0306a)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/xe/xe_bo.c | 17 +++++++++++++++--
drivers/gpu/drm/xe/xe_bo.h | 2 +-
drivers/gpu/drm/xe/xe_bo_types.h | 2 ++
drivers/gpu/drm/xe/xe_dma_buf.c | 2 +-
4 files changed, 19 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -1131,6 +1131,8 @@ static void xe_ttm_bo_destroy(struct ttm
if (bo->ttm.base.import_attach)
drm_prime_gem_destroy(&bo->ttm.base, NULL);
+ if (bo->dma_buf)
+ dma_buf_put(bo->dma_buf);
drm_gem_object_release(&bo->ttm.base);
xe_assert(xe, list_empty(&ttm_bo->base.gpuva.list));
@@ -1292,7 +1294,7 @@ struct xe_bo *xe_bo_init_locked(struct x
struct xe_tile *tile, struct dma_resv *resv,
struct ttm_lru_bulk_move *bulk, size_t size,
u16 cpu_caching, enum ttm_bo_type type,
- u32 flags)
+ u32 flags, struct dma_buf *dma_buf)
{
struct ttm_operation_ctx ctx = {
.interruptible = true,
@@ -1377,6 +1379,17 @@ struct xe_bo *xe_bo_init_locked(struct x
placement = (type == ttm_bo_type_sg ||
bo->flags & XE_BO_FLAG_DEFER_BACKING) ? &sys_placement :
&bo->placement;
+
+ /*
+ * For imported BOs, keep the exporter dma-buf alive for the BO
+ * lifetime. Taken before ttm_bo_init_reserved() to also cover a
+ * creation failure there. Released in xe_ttm_bo_destroy().
+ */
+ if (dma_buf) {
+ get_dma_buf(dma_buf);
+ bo->dma_buf = dma_buf;
+ }
+
err = ttm_bo_init_reserved(&xe->ttm, &bo->ttm, type,
placement, alignment,
&ctx, NULL, resv, xe_ttm_bo_destroy);
@@ -1491,7 +1504,7 @@ __xe_bo_create_locked(struct xe_device *
vm && !xe_vm_in_fault_mode(vm) &&
flags & XE_BO_FLAG_USER ?
&vm->lru_bulk_move : NULL, size,
- cpu_caching, type, flags);
+ cpu_caching, type, flags, NULL);
if (IS_ERR(bo))
return bo;
--- a/drivers/gpu/drm/xe/xe_bo.h
+++ b/drivers/gpu/drm/xe/xe_bo.h
@@ -84,7 +84,7 @@ struct xe_bo *xe_bo_init_locked(struct x
struct xe_tile *tile, struct dma_resv *resv,
struct ttm_lru_bulk_move *bulk, size_t size,
u16 cpu_caching, enum ttm_bo_type type,
- u32 flags);
+ u32 flags, struct dma_buf *dma_buf);
struct xe_bo *
xe_bo_create_locked_range(struct xe_device *xe,
struct xe_tile *tile, struct xe_vm *vm,
--- a/drivers/gpu/drm/xe/xe_bo_types.h
+++ b/drivers/gpu/drm/xe/xe_bo_types.h
@@ -30,6 +30,8 @@ struct xe_bo {
struct ttm_buffer_object ttm;
/** @size: Size of this buffer object */
size_t size;
+ /** @dma_buf: Imported dma-buf ref to keep its resv alive. */
+ struct dma_buf *dma_buf;
/** @flags: flags for this buffer object */
u32 flags;
/** @vm: VM this BO is attached to, for extobj this will be NULL */
--- a/drivers/gpu/drm/xe/xe_dma_buf.c
+++ b/drivers/gpu/drm/xe/xe_dma_buf.c
@@ -214,7 +214,7 @@ xe_dma_buf_init_obj(struct drm_device *d
dma_resv_lock(resv, NULL);
bo = xe_bo_init_locked(xe, storage, NULL, resv, NULL, dma_buf->size,
0, /* Will require 1way or 2way for vm_bind */
- ttm_bo_type_sg, XE_BO_FLAG_SYSTEM);
+ ttm_bo_type_sg, XE_BO_FLAG_SYSTEM, dma_buf);
if (IS_ERR(bo)) {
ret = PTR_ERR(bo);
goto error;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 322/337] drm/i915/hdcp: Move to using intel_display in intel_hdcp
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (319 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 321/337] drm/xe: Hold a dma-buf reference for imported BOs Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 323/337] drm/i915/hdcp: require monotonically increasing seq_num_v Greg Kroah-Hartman
` (22 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable; +Cc: Greg Kroah-Hartman, patches, Suraj Kandpal, Jani Nikula,
Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Suraj Kandpal <suraj.kandpal@intel.com>
[ Upstream commit e35bf8f6a0ff06ceeff15bb032351cd5d006f92b ]
Move to using intel_display wherever possible in intel_hdcp.c
as a part of code refactor.
--v2
-Move intel_display to the first line wherever possible [Jani]
-use the closest reference when using to_intel_display [Jani]
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240911090540.643155-2-suraj.kandpal@intel.com
Stable-dep-of: db9e64c983dc ("drm/i915/hdcp: require monotonically increasing seq_num_v")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 685 +++++++++---------
drivers/gpu/drm/i915/display/intel_hdcp_gsc.c | 9
drivers/gpu/drm/i915/display/intel_hdcp_gsc.h | 5
drivers/gpu/drm/i915/display/intel_hdcp_gsc_message.h | 3
drivers/gpu/drm/xe/display/xe_hdcp_gsc.c | 7
5 files changed, 361 insertions(+), 348 deletions(-)
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -35,20 +35,20 @@ static void
intel_hdcp_disable_hdcp_line_rekeying(struct intel_encoder *encoder,
struct intel_hdcp *hdcp)
{
- struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_display *display = to_intel_display(encoder);
/* Here we assume HDMI is in TMDS mode of operation */
if (encoder->type != INTEL_OUTPUT_HDMI)
return;
- if (DISPLAY_VER(dev_priv) >= 14) {
- if (IS_DISPLAY_VER_STEP(dev_priv, IP_VER(14, 0), STEP_D0, STEP_FOREVER))
- intel_de_rmw(dev_priv, MTL_CHICKEN_TRANS(hdcp->cpu_transcoder),
+ if (DISPLAY_VER(display) >= 14) {
+ if (IS_DISPLAY_VER_STEP(display, IP_VER(14, 0), STEP_D0, STEP_FOREVER))
+ intel_de_rmw(display, MTL_CHICKEN_TRANS(hdcp->cpu_transcoder),
0, HDCP_LINE_REKEY_DISABLE);
- else if (IS_DISPLAY_VER_STEP(dev_priv, IP_VER(14, 1), STEP_B0, STEP_FOREVER) ||
- IS_DISPLAY_VER_STEP(dev_priv, IP_VER(20, 0), STEP_B0, STEP_FOREVER))
- intel_de_rmw(dev_priv,
- TRANS_DDI_FUNC_CTL(dev_priv, hdcp->cpu_transcoder),
+ else if (IS_DISPLAY_VER_STEP(display, IP_VER(14, 1), STEP_B0, STEP_FOREVER) ||
+ IS_DISPLAY_VER_STEP(display, IP_VER(20, 0), STEP_B0, STEP_FOREVER))
+ intel_de_rmw(display,
+ TRANS_DDI_FUNC_CTL(display, hdcp->cpu_transcoder),
0, TRANS_DDI_HDCP_LINE_REKEY_DISABLE);
}
}
@@ -95,10 +95,10 @@ static int
intel_hdcp_required_content_stream(struct intel_atomic_state *state,
struct intel_digital_port *dig_port)
{
+ struct intel_display *display = to_intel_display(state);
struct drm_connector_list_iter conn_iter;
struct intel_digital_port *conn_dig_port;
struct intel_connector *connector;
- struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
bool enforce_type0 = false;
int k;
@@ -111,7 +111,7 @@ intel_hdcp_required_content_stream(struc
if (!dig_port->hdcp_mst_type1_capable)
enforce_type0 = true;
- drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+ drm_connector_list_iter_begin(display->drm, &conn_iter);
for_each_intel_connector_iter(connector, &conn_iter) {
if (connector->base.status == connector_status_disconnected)
continue;
@@ -133,7 +133,7 @@ intel_hdcp_required_content_stream(struc
}
drm_connector_list_iter_end(&conn_iter);
- if (drm_WARN_ON(&i915->drm, data->k > INTEL_NUM_PIPES(i915) || data->k == 0))
+ if (drm_WARN_ON(display->drm, data->k > INTEL_NUM_PIPES(display) || data->k == 0))
return -EINVAL;
/*
@@ -181,7 +181,7 @@ static
int intel_hdcp_read_valid_bksv(struct intel_digital_port *dig_port,
const struct intel_hdcp_shim *shim, u8 *bksv)
{
- struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+ struct intel_display *display = to_intel_display(dig_port);
int ret, i, tries = 2;
/* HDCP spec states that we must retry the bksv if it is invalid */
@@ -193,7 +193,7 @@ int intel_hdcp_read_valid_bksv(struct in
break;
}
if (i == tries) {
- drm_dbg_kms(&i915->drm, "Bksv is invalid\n");
+ drm_dbg_kms(display->drm, "Bksv is invalid\n");
return -ENODEV;
}
@@ -232,7 +232,7 @@ bool intel_hdcp_get_capability(struct in
*/
static bool intel_hdcp2_prerequisite(struct intel_connector *connector)
{
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
/* I915 support for HDCP2.2 */
@@ -240,18 +240,18 @@ static bool intel_hdcp2_prerequisite(str
return false;
/* If MTL+ make sure gsc is loaded and proxy is setup */
- if (intel_hdcp_gsc_cs_required(i915)) {
- if (!intel_hdcp_gsc_check_status(i915))
+ if (intel_hdcp_gsc_cs_required(display)) {
+ if (!intel_hdcp_gsc_check_status(display))
return false;
}
/* MEI/GSC interface is solid depending on which is used */
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- if (!i915->display.hdcp.comp_added || !i915->display.hdcp.arbiter) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ if (!display->hdcp.comp_added || !display->hdcp.arbiter) {
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return false;
}
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return true;
}
@@ -287,19 +287,19 @@ void intel_hdcp_get_remote_capability(st
*hdcp2_capable = false;
}
-static bool intel_hdcp_in_use(struct drm_i915_private *i915,
+static bool intel_hdcp_in_use(struct intel_display *display,
enum transcoder cpu_transcoder, enum port port)
{
- return intel_de_read(i915,
- HDCP_STATUS(i915, cpu_transcoder, port)) &
+ return intel_de_read(display,
+ HDCP_STATUS(display, cpu_transcoder, port)) &
HDCP_STATUS_ENC;
}
-static bool intel_hdcp2_in_use(struct drm_i915_private *i915,
+static bool intel_hdcp2_in_use(struct intel_display *display,
enum transcoder cpu_transcoder, enum port port)
{
- return intel_de_read(i915,
- HDCP2_STATUS(i915, cpu_transcoder, port)) &
+ return intel_de_read(display,
+ HDCP2_STATUS(display, cpu_transcoder, port)) &
LINK_ENCRYPTION_STATUS;
}
@@ -324,8 +324,9 @@ static int intel_hdcp_poll_ksv_fifo(stru
return 0;
}
-static bool hdcp_key_loadable(struct drm_i915_private *i915)
+static bool hdcp_key_loadable(struct intel_display *display)
{
+ struct drm_i915_private *i915 = to_i915(display->drm);
enum i915_power_well_id id;
intel_wakeref_t wakeref;
bool enabled = false;
@@ -352,19 +353,20 @@ static bool hdcp_key_loadable(struct drm
return enabled;
}
-static void intel_hdcp_clear_keys(struct drm_i915_private *i915)
+static void intel_hdcp_clear_keys(struct intel_display *display)
{
- intel_de_write(i915, HDCP_KEY_CONF, HDCP_CLEAR_KEYS_TRIGGER);
- intel_de_write(i915, HDCP_KEY_STATUS,
+ intel_de_write(display, HDCP_KEY_CONF, HDCP_CLEAR_KEYS_TRIGGER);
+ intel_de_write(display, HDCP_KEY_STATUS,
HDCP_KEY_LOAD_DONE | HDCP_KEY_LOAD_STATUS | HDCP_FUSE_IN_PROGRESS | HDCP_FUSE_ERROR | HDCP_FUSE_DONE);
}
-static int intel_hdcp_load_keys(struct drm_i915_private *i915)
+static int intel_hdcp_load_keys(struct intel_display *display)
{
+ struct drm_i915_private *i915 = to_i915(display->drm);
int ret;
u32 val;
- val = intel_de_read(i915, HDCP_KEY_STATUS);
+ val = intel_de_read(display, HDCP_KEY_STATUS);
if ((val & HDCP_KEY_LOAD_DONE) && (val & HDCP_KEY_LOAD_STATUS))
return 0;
@@ -373,7 +375,7 @@ static int intel_hdcp_load_keys(struct d
* out of reset. So if Key is not already loaded, its an error state.
*/
if (IS_HASWELL(i915) || IS_BROADWELL(i915))
- if (!(intel_de_read(i915, HDCP_KEY_STATUS) & HDCP_KEY_LOAD_DONE))
+ if (!(intel_de_read(display, HDCP_KEY_STATUS) & HDCP_KEY_LOAD_DONE))
return -ENXIO;
/*
@@ -384,20 +386,20 @@ static int intel_hdcp_load_keys(struct d
* process from other platforms. These platforms use the GT Driver
* Mailbox interface.
*/
- if (DISPLAY_VER(i915) == 9 && !IS_BROXTON(i915)) {
+ if (DISPLAY_VER(display) == 9 && !IS_BROXTON(i915)) {
ret = snb_pcode_write(&i915->uncore, SKL_PCODE_LOAD_HDCP_KEYS, 1);
if (ret) {
- drm_err(&i915->drm,
+ drm_err(display->drm,
"Failed to initiate HDCP key load (%d)\n",
ret);
return ret;
}
} else {
- intel_de_write(i915, HDCP_KEY_CONF, HDCP_KEY_LOAD_TRIGGER);
+ intel_de_write(display, HDCP_KEY_CONF, HDCP_KEY_LOAD_TRIGGER);
}
/* Wait for the keys to load (500us) */
- ret = intel_de_wait_custom(i915, HDCP_KEY_STATUS,
+ ret = intel_de_wait_custom(display, HDCP_KEY_STATUS,
HDCP_KEY_LOAD_DONE, HDCP_KEY_LOAD_DONE,
10, 1, &val);
if (ret)
@@ -406,27 +408,27 @@ static int intel_hdcp_load_keys(struct d
return -ENXIO;
/* Send Aksv over to PCH display for use in authentication */
- intel_de_write(i915, HDCP_KEY_CONF, HDCP_AKSV_SEND_TRIGGER);
+ intel_de_write(display, HDCP_KEY_CONF, HDCP_AKSV_SEND_TRIGGER);
return 0;
}
/* Returns updated SHA-1 index */
-static int intel_write_sha_text(struct drm_i915_private *i915, u32 sha_text)
+static int intel_write_sha_text(struct intel_display *display, u32 sha_text)
{
- intel_de_write(i915, HDCP_SHA_TEXT, sha_text);
- if (intel_de_wait_for_set(i915, HDCP_REP_CTL, HDCP_SHA1_READY, 1)) {
- drm_err(&i915->drm, "Timed out waiting for SHA1 ready\n");
+ intel_de_write(display, HDCP_SHA_TEXT, sha_text);
+ if (intel_de_wait_for_set(display, HDCP_REP_CTL, HDCP_SHA1_READY, 1)) {
+ drm_err(display->drm, "Timed out waiting for SHA1 ready\n");
return -ETIMEDOUT;
}
return 0;
}
static
-u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private *i915,
+u32 intel_hdcp_get_repeater_ctl(struct intel_display *display,
enum transcoder cpu_transcoder, enum port port)
{
- if (DISPLAY_VER(i915) >= 12) {
+ if (DISPLAY_VER(display) >= 12) {
switch (cpu_transcoder) {
case TRANSCODER_A:
return HDCP_TRANSA_REP_PRESENT |
@@ -441,7 +443,7 @@ u32 intel_hdcp_get_repeater_ctl(struct d
return HDCP_TRANSD_REP_PRESENT |
HDCP_TRANSD_SHA1_M0;
default:
- drm_err(&i915->drm, "Unknown transcoder %d\n",
+ drm_err(display->drm, "Unknown transcoder %d\n",
cpu_transcoder);
return 0;
}
@@ -459,7 +461,7 @@ u32 intel_hdcp_get_repeater_ctl(struct d
case PORT_E:
return HDCP_DDIE_REP_PRESENT | HDCP_DDIE_SHA1_M0;
default:
- drm_err(&i915->drm, "Unknown port %d\n", port);
+ drm_err(display->drm, "Unknown port %d\n", port);
return 0;
}
}
@@ -469,8 +471,8 @@ int intel_hdcp_validate_v_prime(struct i
const struct intel_hdcp_shim *shim,
u8 *ksv_fifo, u8 num_downstream, u8 *bstatus)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
enum transcoder cpu_transcoder = connector->hdcp.cpu_transcoder;
enum port port = dig_port->base.port;
u32 vprime, sha_text, sha_leftovers, rep_ctl;
@@ -481,7 +483,7 @@ int intel_hdcp_validate_v_prime(struct i
ret = shim->read_v_prime_part(dig_port, i, &vprime);
if (ret)
return ret;
- intel_de_write(i915, HDCP_SHA_V_PRIME(i), vprime);
+ intel_de_write(display, HDCP_SHA_V_PRIME(i), vprime);
}
/*
@@ -497,8 +499,8 @@ int intel_hdcp_validate_v_prime(struct i
sha_idx = 0;
sha_text = 0;
sha_leftovers = 0;
- rep_ctl = intel_hdcp_get_repeater_ctl(i915, cpu_transcoder, port);
- intel_de_write(i915, HDCP_REP_CTL, rep_ctl | HDCP_SHA1_TEXT_32);
+ rep_ctl = intel_hdcp_get_repeater_ctl(display, cpu_transcoder, port);
+ intel_de_write(display, HDCP_REP_CTL, rep_ctl | HDCP_SHA1_TEXT_32);
for (i = 0; i < num_downstream; i++) {
unsigned int sha_empty;
u8 *ksv = &ksv_fifo[i * DRM_HDCP_KSV_LEN];
@@ -510,14 +512,14 @@ int intel_hdcp_validate_v_prime(struct i
sha_text |= ksv[j] << off;
}
- ret = intel_write_sha_text(i915, sha_text);
+ ret = intel_write_sha_text(display, sha_text);
if (ret < 0)
return ret;
/* Programming guide writes this every 64 bytes */
sha_idx += sizeof(sha_text);
if (!(sha_idx % 64))
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_32);
/* Store the leftover bytes from the ksv in sha_text */
@@ -534,7 +536,7 @@ int intel_hdcp_validate_v_prime(struct i
if (sizeof(sha_text) > sha_leftovers)
continue;
- ret = intel_write_sha_text(i915, sha_text);
+ ret = intel_write_sha_text(display, sha_text);
if (ret < 0)
return ret;
sha_leftovers = 0;
@@ -550,73 +552,73 @@ int intel_hdcp_validate_v_prime(struct i
*/
if (sha_leftovers == 0) {
/* Write 16 bits of text, 16 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_16);
- ret = intel_write_sha_text(i915,
+ ret = intel_write_sha_text(display,
bstatus[0] << 8 | bstatus[1]);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
/* Write 32 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_0);
- ret = intel_write_sha_text(i915, 0);
+ ret = intel_write_sha_text(display, 0);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
/* Write 16 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_16);
- ret = intel_write_sha_text(i915, 0);
+ ret = intel_write_sha_text(display, 0);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
} else if (sha_leftovers == 1) {
/* Write 24 bits of text, 8 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_24);
sha_text |= bstatus[0] << 16 | bstatus[1] << 8;
/* Only 24-bits of data, must be in the LSB */
sha_text = (sha_text & 0xffffff00) >> 8;
- ret = intel_write_sha_text(i915, sha_text);
+ ret = intel_write_sha_text(display, sha_text);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
/* Write 32 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_0);
- ret = intel_write_sha_text(i915, 0);
+ ret = intel_write_sha_text(display, 0);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
/* Write 24 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_8);
- ret = intel_write_sha_text(i915, 0);
+ ret = intel_write_sha_text(display, 0);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
} else if (sha_leftovers == 2) {
/* Write 32 bits of text */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_32);
sha_text |= bstatus[0] << 8 | bstatus[1];
- ret = intel_write_sha_text(i915, sha_text);
+ ret = intel_write_sha_text(display, sha_text);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
/* Write 64 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_0);
for (i = 0; i < 2; i++) {
- ret = intel_write_sha_text(i915, 0);
+ ret = intel_write_sha_text(display, 0);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
@@ -626,56 +628,56 @@ int intel_hdcp_validate_v_prime(struct i
* Terminate the SHA-1 stream by hand. For the other leftover
* cases this is appended by the hardware.
*/
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_32);
sha_text = DRM_HDCP_SHA1_TERMINATOR << 24;
- ret = intel_write_sha_text(i915, sha_text);
+ ret = intel_write_sha_text(display, sha_text);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
} else if (sha_leftovers == 3) {
/* Write 32 bits of text (filled from LSB) */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_32);
sha_text |= bstatus[0];
- ret = intel_write_sha_text(i915, sha_text);
+ ret = intel_write_sha_text(display, sha_text);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
/* Write 8 bits of text (filled from LSB), 24 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_8);
- ret = intel_write_sha_text(i915, bstatus[1]);
+ ret = intel_write_sha_text(display, bstatus[1]);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
/* Write 32 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_0);
- ret = intel_write_sha_text(i915, 0);
+ ret = intel_write_sha_text(display, 0);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
/* Write 8 bits of M0 */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_TEXT_24);
- ret = intel_write_sha_text(i915, 0);
+ ret = intel_write_sha_text(display, 0);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
} else {
- drm_dbg_kms(&i915->drm, "Invalid number of leftovers %d\n",
+ drm_dbg_kms(display->drm, "Invalid number of leftovers %d\n",
sha_leftovers);
return -EINVAL;
}
- intel_de_write(i915, HDCP_REP_CTL, rep_ctl | HDCP_SHA1_TEXT_32);
+ intel_de_write(display, HDCP_REP_CTL, rep_ctl | HDCP_SHA1_TEXT_32);
/* Fill up to 64-4 bytes with zeros (leave the last write for length) */
while ((sha_idx % 64) < (64 - sizeof(sha_text))) {
- ret = intel_write_sha_text(i915, 0);
+ ret = intel_write_sha_text(display, 0);
if (ret < 0)
return ret;
sha_idx += sizeof(sha_text);
@@ -687,20 +689,20 @@ int intel_hdcp_validate_v_prime(struct i
* - 10 bytes for BINFO/BSTATUS(2), M0(8)
*/
sha_text = (num_downstream * 5 + 10) * 8;
- ret = intel_write_sha_text(i915, sha_text);
+ ret = intel_write_sha_text(display, sha_text);
if (ret < 0)
return ret;
/* Tell the HW we're done with the hash and wait for it to ACK */
- intel_de_write(i915, HDCP_REP_CTL,
+ intel_de_write(display, HDCP_REP_CTL,
rep_ctl | HDCP_SHA1_COMPLETE_HASH);
- if (intel_de_wait_for_set(i915, HDCP_REP_CTL,
+ if (intel_de_wait_for_set(display, HDCP_REP_CTL,
HDCP_SHA1_COMPLETE, 1)) {
- drm_err(&i915->drm, "Timed out waiting for SHA1 complete\n");
+ drm_err(display->drm, "Timed out waiting for SHA1 complete\n");
return -ETIMEDOUT;
}
- if (!(intel_de_read(i915, HDCP_REP_CTL) & HDCP_SHA1_V_MATCH)) {
- drm_dbg_kms(&i915->drm, "SHA-1 mismatch, HDCP failed\n");
+ if (!(intel_de_read(display, HDCP_REP_CTL) & HDCP_SHA1_V_MATCH)) {
+ drm_dbg_kms(display->drm, "SHA-1 mismatch, HDCP failed\n");
return -ENXIO;
}
@@ -711,15 +713,15 @@ int intel_hdcp_validate_v_prime(struct i
static
int intel_hdcp_auth_downstream(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
const struct intel_hdcp_shim *shim = connector->hdcp.shim;
u8 bstatus[2], num_downstream, *ksv_fifo;
int ret, i, tries = 3;
ret = intel_hdcp_poll_ksv_fifo(dig_port, shim);
if (ret) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"KSV list failed to become ready (%d)\n", ret);
return ret;
}
@@ -730,7 +732,7 @@ int intel_hdcp_auth_downstream(struct in
if (DRM_HDCP_MAX_DEVICE_EXCEEDED(bstatus[0]) ||
DRM_HDCP_MAX_CASCADE_EXCEEDED(bstatus[1])) {
- drm_dbg_kms(&i915->drm, "Max Topology Limit Exceeded\n");
+ drm_dbg_kms(display->drm, "Max Topology Limit Exceeded\n");
return -EPERM;
}
@@ -743,14 +745,14 @@ int intel_hdcp_auth_downstream(struct in
*/
num_downstream = DRM_HDCP_NUM_DOWNSTREAM(bstatus[0]);
if (num_downstream == 0) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Repeater with zero downstream devices\n");
return -EINVAL;
}
ksv_fifo = kcalloc(DRM_HDCP_KSV_LEN, num_downstream, GFP_KERNEL);
if (!ksv_fifo) {
- drm_dbg_kms(&i915->drm, "Out of mem: ksv_fifo\n");
+ drm_dbg_kms(display->drm, "Out of mem: ksv_fifo\n");
return -ENOMEM;
}
@@ -758,9 +760,9 @@ int intel_hdcp_auth_downstream(struct in
if (ret)
goto err;
- if (drm_hdcp_check_ksvs_revoked(&i915->drm, ksv_fifo,
+ if (drm_hdcp_check_ksvs_revoked(display->drm, ksv_fifo,
num_downstream) > 0) {
- drm_err(&i915->drm, "Revoked Ksv(s) in ksv_fifo\n");
+ drm_err(display->drm, "Revoked Ksv(s) in ksv_fifo\n");
ret = -EPERM;
goto err;
}
@@ -778,12 +780,12 @@ int intel_hdcp_auth_downstream(struct in
}
if (i == tries) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"V Prime validation failed.(%d)\n", ret);
goto err;
}
- drm_dbg_kms(&i915->drm, "HDCP is enabled (%d downstream devices)\n",
+ drm_dbg_kms(display->drm, "HDCP is enabled (%d downstream devices)\n",
num_downstream);
ret = 0;
err:
@@ -794,8 +796,8 @@ err:
/* Implements Part 1 of the HDCP authorization procedure */
static int intel_hdcp_auth(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
const struct intel_hdcp_shim *shim = hdcp->shim;
enum transcoder cpu_transcoder = connector->hdcp.cpu_transcoder;
@@ -827,7 +829,7 @@ static int intel_hdcp_auth(struct intel_
if (ret)
return ret;
if (!hdcp_capable) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Panel is not HDCP capable\n");
return -EINVAL;
}
@@ -835,24 +837,24 @@ static int intel_hdcp_auth(struct intel_
/* Initialize An with 2 random values and acquire it */
for (i = 0; i < 2; i++)
- intel_de_write(i915,
- HDCP_ANINIT(i915, cpu_transcoder, port),
+ intel_de_write(display,
+ HDCP_ANINIT(display, cpu_transcoder, port),
get_random_u32());
- intel_de_write(i915, HDCP_CONF(i915, cpu_transcoder, port),
+ intel_de_write(display, HDCP_CONF(display, cpu_transcoder, port),
HDCP_CONF_CAPTURE_AN);
/* Wait for An to be acquired */
- if (intel_de_wait_for_set(i915,
- HDCP_STATUS(i915, cpu_transcoder, port),
+ if (intel_de_wait_for_set(display,
+ HDCP_STATUS(display, cpu_transcoder, port),
HDCP_STATUS_AN_READY, 1)) {
- drm_err(&i915->drm, "Timed out waiting for An\n");
+ drm_err(display->drm, "Timed out waiting for An\n");
return -ETIMEDOUT;
}
- an.reg[0] = intel_de_read(i915,
- HDCP_ANLO(i915, cpu_transcoder, port));
- an.reg[1] = intel_de_read(i915,
- HDCP_ANHI(i915, cpu_transcoder, port));
+ an.reg[0] = intel_de_read(display,
+ HDCP_ANLO(display, cpu_transcoder, port));
+ an.reg[1] = intel_de_read(display,
+ HDCP_ANHI(display, cpu_transcoder, port));
ret = shim->write_an_aksv(dig_port, an.shim);
if (ret)
return ret;
@@ -865,34 +867,34 @@ static int intel_hdcp_auth(struct intel_
if (ret < 0)
return ret;
- if (drm_hdcp_check_ksvs_revoked(&i915->drm, bksv.shim, 1) > 0) {
- drm_err(&i915->drm, "BKSV is revoked\n");
+ if (drm_hdcp_check_ksvs_revoked(display->drm, bksv.shim, 1) > 0) {
+ drm_err(display->drm, "BKSV is revoked\n");
return -EPERM;
}
- intel_de_write(i915, HDCP_BKSVLO(i915, cpu_transcoder, port),
+ intel_de_write(display, HDCP_BKSVLO(display, cpu_transcoder, port),
bksv.reg[0]);
- intel_de_write(i915, HDCP_BKSVHI(i915, cpu_transcoder, port),
+ intel_de_write(display, HDCP_BKSVHI(display, cpu_transcoder, port),
bksv.reg[1]);
ret = shim->repeater_present(dig_port, &repeater_present);
if (ret)
return ret;
if (repeater_present)
- intel_de_write(i915, HDCP_REP_CTL,
- intel_hdcp_get_repeater_ctl(i915, cpu_transcoder, port));
+ intel_de_write(display, HDCP_REP_CTL,
+ intel_hdcp_get_repeater_ctl(display, cpu_transcoder, port));
ret = shim->toggle_signalling(dig_port, cpu_transcoder, true);
if (ret)
return ret;
- intel_de_write(i915, HDCP_CONF(i915, cpu_transcoder, port),
+ intel_de_write(display, HDCP_CONF(display, cpu_transcoder, port),
HDCP_CONF_AUTH_AND_ENC);
/* Wait for R0 ready */
- if (wait_for(intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, port)) &
+ if (wait_for(intel_de_read(display, HDCP_STATUS(display, cpu_transcoder, port)) &
(HDCP_STATUS_R0_READY | HDCP_STATUS_ENC), 1)) {
- drm_err(&i915->drm, "Timed out waiting for R0 ready\n");
+ drm_err(display->drm, "Timed out waiting for R0 ready\n");
return -ETIMEDOUT;
}
@@ -918,30 +920,30 @@ static int intel_hdcp_auth(struct intel_
ret = shim->read_ri_prime(dig_port, ri.shim);
if (ret)
return ret;
- intel_de_write(i915,
- HDCP_RPRIME(i915, cpu_transcoder, port),
+ intel_de_write(display,
+ HDCP_RPRIME(display, cpu_transcoder, port),
ri.reg);
/* Wait for Ri prime match */
- if (!wait_for(intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, port)) &
+ if (!wait_for(intel_de_read(display, HDCP_STATUS(display, cpu_transcoder, port)) &
(HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1))
break;
}
if (i == tries) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Timed out waiting for Ri prime match (%x)\n",
- intel_de_read(i915,
- HDCP_STATUS(i915, cpu_transcoder, port)));
+ intel_de_read(display,
+ HDCP_STATUS(display, cpu_transcoder, port)));
return -ETIMEDOUT;
}
/* Wait for encryption confirmation */
- if (intel_de_wait_for_set(i915,
- HDCP_STATUS(i915, cpu_transcoder, port),
+ if (intel_de_wait_for_set(display,
+ HDCP_STATUS(display, cpu_transcoder, port),
HDCP_STATUS_ENC,
HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
- drm_err(&i915->drm, "Timed out waiting for encryption\n");
+ drm_err(display->drm, "Timed out waiting for encryption\n");
return -ETIMEDOUT;
}
@@ -949,42 +951,42 @@ static int intel_hdcp_auth(struct intel_
if (shim->stream_encryption) {
ret = shim->stream_encryption(connector, true);
if (ret) {
- drm_err(&i915->drm, "[CONNECTOR:%d:%s] Failed to enable HDCP 1.4 stream enc\n",
+ drm_err(display->drm, "[CONNECTOR:%d:%s] Failed to enable HDCP 1.4 stream enc\n",
connector->base.base.id, connector->base.name);
return ret;
}
- drm_dbg_kms(&i915->drm, "HDCP 1.4 transcoder: %s stream encrypted\n",
+ drm_dbg_kms(display->drm, "HDCP 1.4 transcoder: %s stream encrypted\n",
transcoder_name(hdcp->stream_transcoder));
}
if (repeater_present)
return intel_hdcp_auth_downstream(connector);
- drm_dbg_kms(&i915->drm, "HDCP is enabled (no repeater present)\n");
+ drm_dbg_kms(display->drm, "HDCP is enabled (no repeater present)\n");
return 0;
}
static int _intel_hdcp_disable(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
enum port port = dig_port->base.port;
enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
u32 repeater_ctl;
int ret;
- drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP is being disabled...\n",
+ drm_dbg_kms(display->drm, "[CONNECTOR:%d:%s] HDCP is being disabled...\n",
connector->base.base.id, connector->base.name);
if (hdcp->shim->stream_encryption) {
ret = hdcp->shim->stream_encryption(connector, false);
if (ret) {
- drm_err(&i915->drm, "[CONNECTOR:%d:%s] Failed to disable HDCP 1.4 stream enc\n",
+ drm_err(display->drm, "[CONNECTOR:%d:%s] Failed to disable HDCP 1.4 stream enc\n",
connector->base.base.id, connector->base.name);
return ret;
}
- drm_dbg_kms(&i915->drm, "HDCP 1.4 transcoder: %s stream encryption disabled\n",
+ drm_dbg_kms(display->drm, "HDCP 1.4 transcoder: %s stream encryption disabled\n",
transcoder_name(hdcp->stream_transcoder));
/*
* If there are other connectors on this port using HDCP,
@@ -996,51 +998,51 @@ static int _intel_hdcp_disable(struct in
}
hdcp->hdcp_encrypted = false;
- intel_de_write(i915, HDCP_CONF(i915, cpu_transcoder, port), 0);
- if (intel_de_wait_for_clear(i915,
- HDCP_STATUS(i915, cpu_transcoder, port),
+ intel_de_write(display, HDCP_CONF(display, cpu_transcoder, port), 0);
+ if (intel_de_wait_for_clear(display,
+ HDCP_STATUS(display, cpu_transcoder, port),
~0, HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
- drm_err(&i915->drm,
+ drm_err(display->drm,
"Failed to disable HDCP, timeout clearing status\n");
return -ETIMEDOUT;
}
- repeater_ctl = intel_hdcp_get_repeater_ctl(i915, cpu_transcoder,
+ repeater_ctl = intel_hdcp_get_repeater_ctl(display, cpu_transcoder,
port);
- intel_de_rmw(i915, HDCP_REP_CTL, repeater_ctl, 0);
+ intel_de_rmw(display, HDCP_REP_CTL, repeater_ctl, 0);
ret = hdcp->shim->toggle_signalling(dig_port, cpu_transcoder, false);
if (ret) {
- drm_err(&i915->drm, "Failed to disable HDCP signalling\n");
+ drm_err(display->drm, "Failed to disable HDCP signalling\n");
return ret;
}
- drm_dbg_kms(&i915->drm, "HDCP is disabled\n");
+ drm_dbg_kms(display->drm, "HDCP is disabled\n");
return 0;
}
static int intel_hdcp1_enable(struct intel_connector *connector)
{
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
int i, ret, tries = 3;
- drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP is being enabled...\n",
+ drm_dbg_kms(display->drm, "[CONNECTOR:%d:%s] HDCP is being enabled...\n",
connector->base.base.id, connector->base.name);
- if (!hdcp_key_loadable(i915)) {
- drm_err(&i915->drm, "HDCP key Load is not possible\n");
+ if (!hdcp_key_loadable(display)) {
+ drm_err(display->drm, "HDCP key Load is not possible\n");
return -ENXIO;
}
for (i = 0; i < KEY_LOAD_TRIES; i++) {
- ret = intel_hdcp_load_keys(i915);
+ ret = intel_hdcp_load_keys(display);
if (!ret)
break;
- intel_hdcp_clear_keys(i915);
+ intel_hdcp_clear_keys(display);
}
if (ret) {
- drm_err(&i915->drm, "Could not load HDCP keys, (%d)\n",
+ drm_err(display->drm, "Could not load HDCP keys, (%d)\n",
ret);
return ret;
}
@@ -1053,13 +1055,13 @@ static int intel_hdcp1_enable(struct int
return 0;
}
- drm_dbg_kms(&i915->drm, "HDCP Auth failure (%d)\n", ret);
+ drm_dbg_kms(display->drm, "HDCP Auth failure (%d)\n", ret);
/* Ensuring HDCP encryption and signalling are stopped. */
_intel_hdcp_disable(connector);
}
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"HDCP authentication failed (%d tries/%d)\n", tries, ret);
return ret;
}
@@ -1072,20 +1074,20 @@ static struct intel_connector *intel_hdc
static void intel_hdcp_update_value(struct intel_connector *connector,
u64 value, bool update_property)
{
- struct drm_device *dev = connector->base.dev;
+ struct intel_display *display = to_intel_display(connector);
+ struct drm_i915_private *i915 = to_i915(display->drm);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
- drm_WARN_ON(connector->base.dev, !mutex_is_locked(&hdcp->mutex));
+ drm_WARN_ON(display->drm, !mutex_is_locked(&hdcp->mutex));
if (hdcp->value == value)
return;
- drm_WARN_ON(dev, !mutex_is_locked(&dig_port->hdcp_mutex));
+ drm_WARN_ON(display->drm, !mutex_is_locked(&dig_port->hdcp_mutex));
if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
- if (!drm_WARN_ON(dev, dig_port->num_hdcp_streams == 0))
+ if (!drm_WARN_ON(display->drm, dig_port->num_hdcp_streams == 0))
dig_port->num_hdcp_streams--;
} else if (value == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
dig_port->num_hdcp_streams++;
@@ -1102,8 +1104,8 @@ static void intel_hdcp_update_value(stru
/* Implements Part 3 of the HDCP authorization procedure */
static int intel_hdcp_check_link(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
enum port port = dig_port->base.port;
enum transcoder cpu_transcoder;
@@ -1121,12 +1123,12 @@ static int intel_hdcp_check_link(struct
goto out;
}
- if (drm_WARN_ON(&i915->drm,
- !intel_hdcp_in_use(i915, cpu_transcoder, port))) {
- drm_err(&i915->drm,
+ if (drm_WARN_ON(display->drm,
+ !intel_hdcp_in_use(display, cpu_transcoder, port))) {
+ drm_err(display->drm,
"[CONNECTOR:%d:%s] HDCP link stopped encryption,%x\n",
connector->base.base.id, connector->base.name,
- intel_de_read(i915, HDCP_STATUS(i915, cpu_transcoder, port)));
+ intel_de_read(display, HDCP_STATUS(display, cpu_transcoder, port)));
ret = -ENXIO;
intel_hdcp_update_value(connector,
DRM_MODE_CONTENT_PROTECTION_DESIRED,
@@ -1142,13 +1144,13 @@ static int intel_hdcp_check_link(struct
goto out;
}
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"[CONNECTOR:%d:%s] HDCP link failed, retrying authentication\n",
connector->base.base.id, connector->base.name);
ret = _intel_hdcp_disable(connector);
if (ret) {
- drm_err(&i915->drm, "Failed to disable hdcp (%d)\n", ret);
+ drm_err(display->drm, "Failed to disable hdcp (%d)\n", ret);
intel_hdcp_update_value(connector,
DRM_MODE_CONTENT_PROTECTION_DESIRED,
true);
@@ -1169,9 +1171,9 @@ static void intel_hdcp_prop_work(struct
struct intel_hdcp *hdcp = container_of(work, struct intel_hdcp,
prop_work);
struct intel_connector *connector = intel_hdcp_to_connector(hdcp);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
- drm_modeset_lock(&i915->drm.mode_config.connection_mutex, NULL);
+ drm_modeset_lock(&display->drm->mode_config.connection_mutex, NULL);
mutex_lock(&hdcp->mutex);
/*
@@ -1184,7 +1186,7 @@ static void intel_hdcp_prop_work(struct
hdcp->value);
mutex_unlock(&hdcp->mutex);
- drm_modeset_unlock(&i915->drm.mode_config.connection_mutex);
+ drm_modeset_unlock(&display->drm->mode_config.connection_mutex);
drm_connector_put(&connector->base);
}
@@ -1199,25 +1201,25 @@ static int
hdcp2_prepare_ake_init(struct intel_connector *connector,
struct hdcp2_ake_init *ake_data)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
ret = arbiter->ops->initiate_hdcp2_session(arbiter->hdcp_dev, data, ake_data);
if (ret)
- drm_dbg_kms(&i915->drm, "Prepare_ake_init failed. %d\n",
+ drm_dbg_kms(display->drm, "Prepare_ake_init failed. %d\n",
ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
@@ -1229,17 +1231,17 @@ hdcp2_verify_rx_cert_prepare_km(struct i
struct hdcp2_ake_no_stored_km *ek_pub_km,
size_t *msg_sz)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
@@ -1247,9 +1249,9 @@ hdcp2_verify_rx_cert_prepare_km(struct i
rx_cert, paired,
ek_pub_km, msg_sz);
if (ret < 0)
- drm_dbg_kms(&i915->drm, "Verify rx_cert failed. %d\n",
+ drm_dbg_kms(display->drm, "Verify rx_cert failed. %d\n",
ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
@@ -1257,24 +1259,24 @@ hdcp2_verify_rx_cert_prepare_km(struct i
static int hdcp2_verify_hprime(struct intel_connector *connector,
struct hdcp2_ake_send_hprime *rx_hprime)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
ret = arbiter->ops->verify_hprime(arbiter->hdcp_dev, data, rx_hprime);
if (ret < 0)
- drm_dbg_kms(&i915->drm, "Verify hprime failed. %d\n", ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ drm_dbg_kms(display->drm, "Verify hprime failed. %d\n", ret);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
@@ -1283,25 +1285,25 @@ static int
hdcp2_store_pairing_info(struct intel_connector *connector,
struct hdcp2_ake_send_pairing_info *pairing_info)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
ret = arbiter->ops->store_pairing_info(arbiter->hdcp_dev, data, pairing_info);
if (ret < 0)
- drm_dbg_kms(&i915->drm, "Store pairing info failed. %d\n",
+ drm_dbg_kms(display->drm, "Store pairing info failed. %d\n",
ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
@@ -1310,25 +1312,25 @@ static int
hdcp2_prepare_lc_init(struct intel_connector *connector,
struct hdcp2_lc_init *lc_init)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
ret = arbiter->ops->initiate_locality_check(arbiter->hdcp_dev, data, lc_init);
if (ret < 0)
- drm_dbg_kms(&i915->drm, "Prepare lc_init failed. %d\n",
+ drm_dbg_kms(display->drm, "Prepare lc_init failed. %d\n",
ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
@@ -1337,25 +1339,25 @@ static int
hdcp2_verify_lprime(struct intel_connector *connector,
struct hdcp2_lc_send_lprime *rx_lprime)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
ret = arbiter->ops->verify_lprime(arbiter->hdcp_dev, data, rx_lprime);
if (ret < 0)
- drm_dbg_kms(&i915->drm, "Verify L_Prime failed. %d\n",
+ drm_dbg_kms(display->drm, "Verify L_Prime failed. %d\n",
ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
@@ -1363,25 +1365,25 @@ hdcp2_verify_lprime(struct intel_connect
static int hdcp2_prepare_skey(struct intel_connector *connector,
struct hdcp2_ske_send_eks *ske_data)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
ret = arbiter->ops->get_session_key(arbiter->hdcp_dev, data, ske_data);
if (ret < 0)
- drm_dbg_kms(&i915->drm, "Get session key failed. %d\n",
+ drm_dbg_kms(display->drm, "Get session key failed. %d\n",
ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
@@ -1392,17 +1394,17 @@ hdcp2_verify_rep_topology_prepare_ack(st
*rep_topology,
struct hdcp2_rep_send_ack *rep_send_ack)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
@@ -1411,9 +1413,9 @@ hdcp2_verify_rep_topology_prepare_ack(st
rep_topology,
rep_send_ack);
if (ret < 0)
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Verify rep topology failed. %d\n", ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
@@ -1422,71 +1424,71 @@ static int
hdcp2_verify_mprime(struct intel_connector *connector,
struct hdcp2_rep_stream_ready *stream_ready)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
ret = arbiter->ops->verify_mprime(arbiter->hdcp_dev, data, stream_ready);
if (ret < 0)
- drm_dbg_kms(&i915->drm, "Verify mprime failed. %d\n", ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ drm_dbg_kms(display->drm, "Verify mprime failed. %d\n", ret);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
static int hdcp2_authenticate_port(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
ret = arbiter->ops->enable_hdcp_authentication(arbiter->hdcp_dev, data);
if (ret < 0)
- drm_dbg_kms(&i915->drm, "Enable hdcp auth failed. %d\n",
+ drm_dbg_kms(display->drm, "Enable hdcp auth failed. %d\n",
ret);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
static int hdcp2_close_session(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct i915_hdcp_arbiter *arbiter;
int ret;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- arbiter = i915->display.hdcp.arbiter;
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ arbiter = display->hdcp.arbiter;
if (!arbiter || !arbiter->ops) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return -EINVAL;
}
ret = arbiter->ops->close_hdcp_session(arbiter->hdcp_dev,
&dig_port->hdcp_port_data);
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return ret;
}
@@ -1499,7 +1501,7 @@ static int hdcp2_deauthenticate_port(str
/* Authentication flow starts from here */
static int hdcp2_authentication_key_exchange(struct intel_connector *connector)
{
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
union {
struct hdcp2_ake_init ake_init;
@@ -1531,16 +1533,16 @@ static int hdcp2_authentication_key_exch
return ret;
if (msgs.send_cert.rx_caps[0] != HDCP_2_2_RX_CAPS_VERSION_VAL) {
- drm_dbg_kms(&i915->drm, "cert.rx_caps dont claim HDCP2.2\n");
+ drm_dbg_kms(display->drm, "cert.rx_caps dont claim HDCP2.2\n");
return -EINVAL;
}
hdcp->is_repeater = HDCP_2_2_RX_REPEATER(msgs.send_cert.rx_caps[2]);
- if (drm_hdcp_check_ksvs_revoked(&i915->drm,
+ if (drm_hdcp_check_ksvs_revoked(display->drm,
msgs.send_cert.cert_rx.receiver_id,
1) > 0) {
- drm_err(&i915->drm, "Receiver ID is revoked\n");
+ drm_err(display->drm, "Receiver ID is revoked\n");
return -EPERM;
}
@@ -1691,8 +1693,8 @@ out:
static
int hdcp2_authenticate_repeater_topology(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
union {
struct hdcp2_rep_send_receiverid_list recvid_list;
@@ -1712,7 +1714,7 @@ int hdcp2_authenticate_repeater_topology
if (HDCP_2_2_MAX_CASCADE_EXCEEDED(rx_info[1]) ||
HDCP_2_2_MAX_DEVS_EXCEEDED(rx_info[1])) {
- drm_dbg_kms(&i915->drm, "Topology Max Size Exceeded\n");
+ drm_dbg_kms(display->drm, "Topology Max Size Exceeded\n");
return -EINVAL;
}
@@ -1725,7 +1727,7 @@ int hdcp2_authenticate_repeater_topology
!HDCP_2_2_HDCP_2_0_REP_CONNECTED(rx_info[1]);
if (!dig_port->hdcp_mst_type1_capable && hdcp->content_type) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"HDCP1.x or 2.0 Legacy Device Downstream\n");
return -EINVAL;
}
@@ -1735,23 +1737,23 @@ int hdcp2_authenticate_repeater_topology
drm_hdcp_be24_to_cpu((const u8 *)msgs.recvid_list.seq_num_v);
if (!hdcp->hdcp2_encrypted && seq_num_v) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Non zero Seq_num_v at first RecvId_List msg\n");
return -EINVAL;
}
if (seq_num_v < hdcp->seq_num_v) {
/* Roll over of the seq_num_v from repeater. Reauthenticate. */
- drm_dbg_kms(&i915->drm, "Seq_num_v roll over.\n");
+ drm_dbg_kms(display->drm, "Seq_num_v roll over.\n");
return -EINVAL;
}
device_cnt = (HDCP_2_2_DEV_COUNT_HI(rx_info[0]) << 4 |
HDCP_2_2_DEV_COUNT_LO(rx_info[1]));
- if (drm_hdcp_check_ksvs_revoked(&i915->drm,
+ if (drm_hdcp_check_ksvs_revoked(display->drm,
msgs.recvid_list.receiver_ids,
device_cnt) > 0) {
- drm_err(&i915->drm, "Revoked receiver ID(s) is in list\n");
+ drm_err(display->drm, "Revoked receiver ID(s) is in list\n");
return -EPERM;
}
@@ -1772,27 +1774,27 @@ int hdcp2_authenticate_repeater_topology
static int hdcp2_authenticate_sink(struct intel_connector *connector)
{
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
const struct intel_hdcp_shim *shim = hdcp->shim;
int ret;
ret = hdcp2_authentication_key_exchange(connector);
if (ret < 0) {
- drm_dbg_kms(&i915->drm, "AKE Failed. Err : %d\n", ret);
+ drm_dbg_kms(display->drm, "AKE Failed. Err : %d\n", ret);
return ret;
}
ret = hdcp2_locality_check(connector);
if (ret < 0) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Locality Check failed. Err : %d\n", ret);
return ret;
}
ret = hdcp2_session_key_exchange(connector);
if (ret < 0) {
- drm_dbg_kms(&i915->drm, "SKE Failed. Err : %d\n", ret);
+ drm_dbg_kms(display->drm, "SKE Failed. Err : %d\n", ret);
return ret;
}
@@ -1807,7 +1809,7 @@ static int hdcp2_authenticate_sink(struc
if (hdcp->is_repeater) {
ret = hdcp2_authenticate_repeater_topology(connector);
if (ret < 0) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Repeater Auth Failed. Err: %d\n", ret);
return ret;
}
@@ -1818,17 +1820,17 @@ static int hdcp2_authenticate_sink(struc
static int hdcp2_enable_stream_encryption(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
struct intel_hdcp *hdcp = &connector->hdcp;
enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
enum port port = dig_port->base.port;
int ret = 0;
- if (!(intel_de_read(i915, HDCP2_STATUS(i915, cpu_transcoder, port)) &
+ if (!(intel_de_read(display, HDCP2_STATUS(display, cpu_transcoder, port)) &
LINK_ENCRYPTION_STATUS)) {
- drm_err(&i915->drm, "[CONNECTOR:%d:%s] HDCP 2.2 Link is not encrypted\n",
+ drm_err(display->drm, "[CONNECTOR:%d:%s] HDCP 2.2 Link is not encrypted\n",
connector->base.base.id, connector->base.name);
ret = -EPERM;
goto link_recover;
@@ -1837,11 +1839,11 @@ static int hdcp2_enable_stream_encryptio
if (hdcp->shim->stream_2_2_encryption) {
ret = hdcp->shim->stream_2_2_encryption(connector, true);
if (ret) {
- drm_err(&i915->drm, "[CONNECTOR:%d:%s] Failed to enable HDCP 2.2 stream enc\n",
+ drm_err(display->drm, "[CONNECTOR:%d:%s] Failed to enable HDCP 2.2 stream enc\n",
connector->base.base.id, connector->base.name);
return ret;
}
- drm_dbg_kms(&i915->drm, "HDCP 2.2 transcoder: %s stream encrypted\n",
+ drm_dbg_kms(display->drm, "HDCP 2.2 transcoder: %s stream encrypted\n",
transcoder_name(hdcp->stream_transcoder));
}
@@ -1849,7 +1851,7 @@ static int hdcp2_enable_stream_encryptio
link_recover:
if (hdcp2_deauthenticate_port(connector) < 0)
- drm_dbg_kms(&i915->drm, "Port deauth failed.\n");
+ drm_dbg_kms(display->drm, "Port deauth failed.\n");
dig_port->hdcp_auth_status = false;
data->k = 0;
@@ -1859,35 +1861,35 @@ link_recover:
static int hdcp2_enable_encryption(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
enum port port = dig_port->base.port;
enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
int ret;
- drm_WARN_ON(&i915->drm,
- intel_de_read(i915, HDCP2_STATUS(i915, cpu_transcoder, port)) &
+ drm_WARN_ON(display->drm,
+ intel_de_read(display, HDCP2_STATUS(display, cpu_transcoder, port)) &
LINK_ENCRYPTION_STATUS);
if (hdcp->shim->toggle_signalling) {
ret = hdcp->shim->toggle_signalling(dig_port, cpu_transcoder,
true);
if (ret) {
- drm_err(&i915->drm,
+ drm_err(display->drm,
"Failed to enable HDCP signalling. %d\n",
ret);
return ret;
}
}
- if (intel_de_read(i915, HDCP2_STATUS(i915, cpu_transcoder, port)) &
+ if (intel_de_read(display, HDCP2_STATUS(display, cpu_transcoder, port)) &
LINK_AUTH_STATUS)
/* Link is Authenticated. Now set for Encryption */
- intel_de_rmw(i915, HDCP2_CTL(i915, cpu_transcoder, port),
+ intel_de_rmw(display, HDCP2_CTL(display, cpu_transcoder, port),
0, CTL_LINK_ENCRYPTION_REQ);
- ret = intel_de_wait_for_set(i915,
- HDCP2_STATUS(i915, cpu_transcoder,
+ ret = intel_de_wait_for_set(display,
+ HDCP2_STATUS(display, cpu_transcoder,
port),
LINK_ENCRYPTION_STATUS,
HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
@@ -1898,32 +1900,33 @@ static int hdcp2_enable_encryption(struc
static int hdcp2_disable_encryption(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
enum port port = dig_port->base.port;
enum transcoder cpu_transcoder = hdcp->cpu_transcoder;
int ret;
- drm_WARN_ON(&i915->drm, !(intel_de_read(i915, HDCP2_STATUS(i915, cpu_transcoder, port)) &
- LINK_ENCRYPTION_STATUS));
+ drm_WARN_ON(display->drm,
+ !(intel_de_read(display, HDCP2_STATUS(display, cpu_transcoder, port)) &
+ LINK_ENCRYPTION_STATUS));
- intel_de_rmw(i915, HDCP2_CTL(i915, cpu_transcoder, port),
+ intel_de_rmw(display, HDCP2_CTL(display, cpu_transcoder, port),
CTL_LINK_ENCRYPTION_REQ, 0);
- ret = intel_de_wait_for_clear(i915,
- HDCP2_STATUS(i915, cpu_transcoder,
+ ret = intel_de_wait_for_clear(display,
+ HDCP2_STATUS(display, cpu_transcoder,
port),
LINK_ENCRYPTION_STATUS,
HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
if (ret == -ETIMEDOUT)
- drm_dbg_kms(&i915->drm, "Disable Encryption Timedout");
+ drm_dbg_kms(display->drm, "Disable Encryption Timedout");
if (hdcp->shim->toggle_signalling) {
ret = hdcp->shim->toggle_signalling(dig_port, cpu_transcoder,
false);
if (ret) {
- drm_err(&i915->drm,
+ drm_err(display->drm,
"Failed to disable HDCP signalling. %d\n",
ret);
return ret;
@@ -1936,7 +1939,7 @@ static int hdcp2_disable_encryption(stru
static int
hdcp2_propagate_stream_management_info(struct intel_connector *connector)
{
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
int i, tries = 3, ret;
if (!connector->hdcp.is_repeater)
@@ -1949,12 +1952,12 @@ hdcp2_propagate_stream_management_info(s
/* Lets restart the auth incase of seq_num_m roll over */
if (connector->hdcp.seq_num_m > HDCP_2_2_SEQ_NUM_MAX) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"seq_num_m roll over.(%d)\n", ret);
break;
}
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"HDCP2 stream management %d of %d Failed.(%d)\n",
i + 1, tries, ret);
}
@@ -1965,8 +1968,8 @@ hdcp2_propagate_stream_management_info(s
static int hdcp2_authenticate_and_encrypt(struct intel_atomic_state *state,
struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
int ret = 0, i, tries = 3;
for (i = 0; i < tries && !dig_port->hdcp_auth_status; i++) {
@@ -1974,7 +1977,7 @@ static int hdcp2_authenticate_and_encryp
if (!ret) {
ret = intel_hdcp_prepare_streams(state, connector);
if (ret) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Prepare stream failed.(%d)\n",
ret);
break;
@@ -1982,7 +1985,7 @@ static int hdcp2_authenticate_and_encryp
ret = hdcp2_propagate_stream_management_info(connector);
if (ret) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Stream management failed.(%d)\n",
ret);
break;
@@ -1991,15 +1994,15 @@ static int hdcp2_authenticate_and_encryp
ret = hdcp2_authenticate_port(connector);
if (!ret)
break;
- drm_dbg_kms(&i915->drm, "HDCP2 port auth failed.(%d)\n",
+ drm_dbg_kms(display->drm, "HDCP2 port auth failed.(%d)\n",
ret);
}
/* Clearing the mei hdcp session */
- drm_dbg_kms(&i915->drm, "HDCP2.2 Auth %d of %d Failed.(%d)\n",
+ drm_dbg_kms(display->drm, "HDCP2.2 Auth %d of %d Failed.(%d)\n",
i + 1, tries, ret);
if (hdcp2_deauthenticate_port(connector) < 0)
- drm_dbg_kms(&i915->drm, "Port deauth failed.\n");
+ drm_dbg_kms(display->drm, "Port deauth failed.\n");
}
if (!ret && !dig_port->hdcp_auth_status) {
@@ -2010,10 +2013,10 @@ static int hdcp2_authenticate_and_encryp
msleep(HDCP_2_2_DELAY_BEFORE_ENCRYPTION_EN);
ret = hdcp2_enable_encryption(connector);
if (ret < 0) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"Encryption Enable Failed.(%d)\n", ret);
if (hdcp2_deauthenticate_port(connector) < 0)
- drm_dbg_kms(&i915->drm, "Port deauth failed.\n");
+ drm_dbg_kms(display->drm, "Port deauth failed.\n");
}
}
@@ -2026,11 +2029,11 @@ static int hdcp2_authenticate_and_encryp
static int _intel_hdcp2_enable(struct intel_atomic_state *state,
struct intel_connector *connector)
{
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
int ret;
- drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP2.2 is being enabled. Type: %d\n",
+ drm_dbg_kms(display->drm, "[CONNECTOR:%d:%s] HDCP2.2 is being enabled. Type: %d\n",
connector->base.base.id, connector->base.name,
hdcp->content_type);
@@ -2038,12 +2041,12 @@ static int _intel_hdcp2_enable(struct in
ret = hdcp2_authenticate_and_encrypt(state, connector);
if (ret) {
- drm_dbg_kms(&i915->drm, "HDCP2 Type%d Enabling Failed. (%d)\n",
+ drm_dbg_kms(display->drm, "HDCP2 Type%d Enabling Failed. (%d)\n",
hdcp->content_type, ret);
return ret;
}
- drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP2.2 is enabled. Type %d\n",
+ drm_dbg_kms(display->drm, "[CONNECTOR:%d:%s] HDCP2.2 is enabled. Type %d\n",
connector->base.base.id, connector->base.name,
hdcp->content_type);
@@ -2054,23 +2057,23 @@ static int _intel_hdcp2_enable(struct in
static int
_intel_hdcp2_disable(struct intel_connector *connector, bool hdcp2_link_recovery)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
struct intel_hdcp *hdcp = &connector->hdcp;
int ret;
- drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] HDCP2.2 is being Disabled\n",
+ drm_dbg_kms(display->drm, "[CONNECTOR:%d:%s] HDCP2.2 is being Disabled\n",
connector->base.base.id, connector->base.name);
if (hdcp->shim->stream_2_2_encryption) {
ret = hdcp->shim->stream_2_2_encryption(connector, false);
if (ret) {
- drm_err(&i915->drm, "[CONNECTOR:%d:%s] Failed to disable HDCP 2.2 stream enc\n",
+ drm_err(display->drm, "[CONNECTOR:%d:%s] Failed to disable HDCP 2.2 stream enc\n",
connector->base.base.id, connector->base.name);
return ret;
}
- drm_dbg_kms(&i915->drm, "HDCP 2.2 transcoder: %s stream encryption disabled\n",
+ drm_dbg_kms(display->drm, "HDCP 2.2 transcoder: %s stream encryption disabled\n",
transcoder_name(hdcp->stream_transcoder));
if (dig_port->num_hdcp_streams > 0 && !hdcp2_link_recovery)
@@ -2080,7 +2083,7 @@ _intel_hdcp2_disable(struct intel_connec
ret = hdcp2_disable_encryption(connector);
if (hdcp2_deauthenticate_port(connector) < 0)
- drm_dbg_kms(&i915->drm, "Port deauth failed.\n");
+ drm_dbg_kms(display->drm, "Port deauth failed.\n");
connector->hdcp.hdcp2_encrypted = false;
dig_port->hdcp_auth_status = false;
@@ -2092,8 +2095,8 @@ _intel_hdcp2_disable(struct intel_connec
/* Implements the Link Integrity Check for HDCP2.2 */
static int intel_hdcp2_check_link(struct intel_connector *connector)
{
+ struct intel_display *display = to_intel_display(connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
enum port port = dig_port->base.port;
enum transcoder cpu_transcoder;
@@ -2110,11 +2113,11 @@ static int intel_hdcp2_check_link(struct
goto out;
}
- if (drm_WARN_ON(&i915->drm,
- !intel_hdcp2_in_use(i915, cpu_transcoder, port))) {
- drm_err(&i915->drm,
+ if (drm_WARN_ON(display->drm,
+ !intel_hdcp2_in_use(display, cpu_transcoder, port))) {
+ drm_err(display->drm,
"HDCP2.2 link stopped the encryption, %x\n",
- intel_de_read(i915, HDCP2_STATUS(i915, cpu_transcoder, port)));
+ intel_de_read(display, HDCP2_STATUS(display, cpu_transcoder, port)));
ret = -ENXIO;
_intel_hdcp2_disable(connector, true);
intel_hdcp_update_value(connector,
@@ -2137,17 +2140,17 @@ static int intel_hdcp2_check_link(struct
if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
goto out;
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"HDCP2.2 Downstream topology change\n");
} else {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"[CONNECTOR:%d:%s] HDCP2.2 link failed, retrying auth\n",
connector->base.base.id, connector->base.name);
}
ret = _intel_hdcp2_disable(connector, true);
if (ret) {
- drm_err(&i915->drm,
+ drm_err(display->drm,
"[CONNECTOR:%d:%s] Failed to disable hdcp2.2 (%d)\n",
connector->base.base.id, connector->base.name, ret);
intel_hdcp_update_value(connector,
@@ -2169,7 +2172,8 @@ static void intel_hdcp_check_work(struct
struct intel_hdcp,
check_work);
struct intel_connector *connector = intel_hdcp_to_connector(hdcp);
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
+ struct drm_i915_private *i915 = to_i915(display->drm);
if (drm_connector_is_unregistered(&connector->base))
return;
@@ -2186,13 +2190,12 @@ static int i915_hdcp_component_bind(stru
struct device *mei_kdev, void *data)
{
struct intel_display *display = to_intel_display(drv_kdev);
- struct drm_i915_private *i915 = to_i915(display->drm);
- drm_dbg(&i915->drm, "I915 HDCP comp bind\n");
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- i915->display.hdcp.arbiter = (struct i915_hdcp_arbiter *)data;
- i915->display.hdcp.arbiter->hdcp_dev = mei_kdev;
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ drm_dbg(display->drm, "I915 HDCP comp bind\n");
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ display->hdcp.arbiter = (struct i915_hdcp_arbiter *)data;
+ display->hdcp.arbiter->hdcp_dev = mei_kdev;
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return 0;
}
@@ -2201,12 +2204,11 @@ static void i915_hdcp_component_unbind(s
struct device *mei_kdev, void *data)
{
struct intel_display *display = to_intel_display(drv_kdev);
- struct drm_i915_private *i915 = to_i915(display->drm);
- drm_dbg(&i915->drm, "I915 HDCP comp unbind\n");
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- i915->display.hdcp.arbiter = NULL;
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ drm_dbg(display->drm, "I915 HDCP comp unbind\n");
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ display->hdcp.arbiter = NULL;
+ mutex_unlock(&display->hdcp.hdcp_mutex);
}
static const struct component_ops i915_hdcp_ops = {
@@ -2240,11 +2242,11 @@ static int initialize_hdcp_port_data(str
struct intel_digital_port *dig_port,
const struct intel_hdcp_shim *shim)
{
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
enum port port = dig_port->base.port;
- if (DISPLAY_VER(i915) < 12)
+ if (DISPLAY_VER(display) < 12)
data->hdcp_ddi = intel_get_hdcp_ddi_index(port);
else
/*
@@ -2264,11 +2266,11 @@ static int initialize_hdcp_port_data(str
data->protocol = (u8)shim->protocol;
if (!data->streams)
- data->streams = kcalloc(INTEL_NUM_PIPES(i915),
+ data->streams = kcalloc(INTEL_NUM_PIPES(display),
sizeof(struct hdcp2_streamid_type),
GFP_KERNEL);
if (!data->streams) {
- drm_err(&i915->drm, "Out of Memory\n");
+ drm_err(display->drm, "Out of Memory\n");
return -ENOMEM;
}
@@ -2277,13 +2279,15 @@ static int initialize_hdcp_port_data(str
static bool is_hdcp2_supported(struct drm_i915_private *i915)
{
- if (intel_hdcp_gsc_cs_required(i915))
+ struct intel_display *display = to_intel_display(&i915->drm);
+
+ if (intel_hdcp_gsc_cs_required(display))
return true;
if (!IS_ENABLED(CONFIG_INTEL_MEI_HDCP))
return false;
- return (DISPLAY_VER(i915) >= 10 ||
+ return (DISPLAY_VER(display) >= 10 ||
IS_KABYLAKE(i915) ||
IS_COFFEELAKE(i915) ||
IS_COMETLAKE(i915));
@@ -2291,28 +2295,29 @@ static bool is_hdcp2_supported(struct dr
void intel_hdcp_component_init(struct drm_i915_private *i915)
{
+ struct intel_display *display = to_intel_display(&i915->drm);
int ret;
if (!is_hdcp2_supported(i915))
return;
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- drm_WARN_ON(&i915->drm, i915->display.hdcp.comp_added);
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ drm_WARN_ON(display->drm, display->hdcp.comp_added);
- i915->display.hdcp.comp_added = true;
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
- if (intel_hdcp_gsc_cs_required(i915))
+ display->hdcp.comp_added = true;
+ mutex_unlock(&display->hdcp.hdcp_mutex);
+ if (intel_hdcp_gsc_cs_required(display))
ret = intel_hdcp_gsc_init(i915);
else
- ret = component_add_typed(i915->drm.dev, &i915_hdcp_ops,
+ ret = component_add_typed(display->drm->dev, &i915_hdcp_ops,
I915_COMPONENT_HDCP);
if (ret < 0) {
- drm_dbg_kms(&i915->drm, "Failed at fw component add(%d)\n",
+ drm_dbg_kms(display->drm, "Failed at fw component add(%d)\n",
ret);
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- i915->display.hdcp.comp_added = false;
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ display->hdcp.comp_added = false;
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return;
}
}
@@ -2321,13 +2326,13 @@ static void intel_hdcp2_init(struct inte
struct intel_digital_port *dig_port,
const struct intel_hdcp_shim *shim)
{
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
int ret;
ret = initialize_hdcp_port_data(connector, dig_port, shim);
if (ret) {
- drm_dbg_kms(&i915->drm, "Mei hdcp data init failed\n");
+ drm_dbg_kms(display->drm, "Mei hdcp data init failed\n");
return;
}
@@ -2371,7 +2376,8 @@ static int _intel_hdcp_enable(struct int
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
- struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ struct intel_display *display = to_intel_display(encoder);
+ struct drm_i915_private *i915 = to_i915(display->drm);
struct intel_connector *connector =
to_intel_connector(conn_state->connector);
struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
@@ -2383,14 +2389,14 @@ static int _intel_hdcp_enable(struct int
return -ENOENT;
if (!connector->encoder) {
- drm_err(&i915->drm, "[CONNECTOR:%d:%s] encoder is not initialized\n",
+ drm_err(display->drm, "[CONNECTOR:%d:%s] encoder is not initialized\n",
connector->base.base.id, connector->base.name);
return -ENODEV;
}
mutex_lock(&hdcp->mutex);
mutex_lock(&dig_port->hdcp_mutex);
- drm_WARN_ON(&i915->drm,
+ drm_WARN_ON(display->drm,
hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED);
hdcp->content_type = (u8)conn_state->hdcp_content_type;
@@ -2555,19 +2561,21 @@ void intel_hdcp_update_pipe(struct intel
void intel_hdcp_component_fini(struct drm_i915_private *i915)
{
- mutex_lock(&i915->display.hdcp.hdcp_mutex);
- if (!i915->display.hdcp.comp_added) {
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ struct intel_display *display = to_intel_display(&i915->drm);
+
+ mutex_lock(&display->hdcp.hdcp_mutex);
+ if (!display->hdcp.comp_added) {
+ mutex_unlock(&display->hdcp.hdcp_mutex);
return;
}
- i915->display.hdcp.comp_added = false;
- mutex_unlock(&i915->display.hdcp.hdcp_mutex);
+ display->hdcp.comp_added = false;
+ mutex_unlock(&display->hdcp.hdcp_mutex);
- if (intel_hdcp_gsc_cs_required(i915))
+ if (intel_hdcp_gsc_cs_required(display))
intel_hdcp_gsc_fini(i915);
else
- component_del(i915->drm.dev, &i915_hdcp_ops);
+ component_del(display->drm->dev, &i915_hdcp_ops);
}
void intel_hdcp_cleanup(struct intel_connector *connector)
@@ -2657,7 +2665,8 @@ void intel_hdcp_atomic_check(struct drm_
void intel_hdcp_handle_cp_irq(struct intel_connector *connector)
{
struct intel_hdcp *hdcp = &connector->hdcp;
- struct drm_i915_private *i915 = to_i915(connector->base.dev);
+ struct intel_display *display = to_intel_display(connector);
+ struct drm_i915_private *i915 = to_i915(display->drm);
if (!hdcp->shim)
return;
--- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.c
@@ -19,18 +19,19 @@ struct intel_hdcp_gsc_message {
void *hdcp_cmd_out;
};
-bool intel_hdcp_gsc_cs_required(struct drm_i915_private *i915)
+bool intel_hdcp_gsc_cs_required(struct intel_display *display)
{
- return DISPLAY_VER(i915) >= 14;
+ return DISPLAY_VER(display) >= 14;
}
-bool intel_hdcp_gsc_check_status(struct drm_i915_private *i915)
+bool intel_hdcp_gsc_check_status(struct intel_display *display)
{
+ struct drm_i915_private *i915 = to_i915(display->drm);
struct intel_gt *gt = i915->media_gt;
struct intel_gsc_uc *gsc = gt ? >->uc.gsc : NULL;
if (!gsc || !intel_uc_fw_is_running(&gsc->fw)) {
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(display->drm,
"GSC components required for HDCP2.2 are not ready\n");
return false;
}
--- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h
+++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc.h
@@ -10,14 +10,15 @@
#include <linux/types.h>
struct drm_i915_private;
+struct intel_display;
struct intel_hdcp_gsc_message;
-bool intel_hdcp_gsc_cs_required(struct drm_i915_private *i915);
+bool intel_hdcp_gsc_cs_required(struct intel_display *display);
ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in,
size_t msg_in_len, u8 *msg_out,
size_t msg_out_len);
int intel_hdcp_gsc_init(struct drm_i915_private *i915);
void intel_hdcp_gsc_fini(struct drm_i915_private *i915);
-bool intel_hdcp_gsc_check_status(struct drm_i915_private *i915);
+bool intel_hdcp_gsc_check_status(struct intel_display *display);
#endif /* __INTEL_HDCP_GCS_H__ */
--- a/drivers/gpu/drm/i915/display/intel_hdcp_gsc_message.h
+++ b/drivers/gpu/drm/i915/display/intel_hdcp_gsc_message.h
@@ -22,11 +22,12 @@ struct hdcp2_ske_send_eks;
struct hdcp2_rep_send_receiverid_list;
struct hdcp2_rep_send_ack;
struct hdcp2_rep_stream_ready;
+struct intel_display;
ssize_t intel_hdcp_gsc_msg_send(struct drm_i915_private *i915, u8 *msg_in,
size_t msg_in_len, u8 *msg_out,
size_t msg_out_len);
-bool intel_hdcp_gsc_check_status(struct drm_i915_private *i915);
+bool intel_hdcp_gsc_check_status(struct intel_display *display);
int
intel_hdcp_gsc_initiate_session(struct device *dev, struct hdcp_port_data *data,
struct hdcp2_ake_init *ake_data);
--- a/drivers/gpu/drm/xe/display/xe_hdcp_gsc.c
+++ b/drivers/gpu/drm/xe/display/xe_hdcp_gsc.c
@@ -30,13 +30,14 @@ struct intel_hdcp_gsc_message {
#define HDCP_GSC_HEADER_SIZE sizeof(struct intel_gsc_mtl_header)
-bool intel_hdcp_gsc_cs_required(struct xe_device *xe)
+bool intel_hdcp_gsc_cs_required(struct intel_display *display)
{
- return DISPLAY_VER(xe) >= 14;
+ return DISPLAY_VER(display) >= 14;
}
-bool intel_hdcp_gsc_check_status(struct xe_device *xe)
+bool intel_hdcp_gsc_check_status(struct intel_display *display)
{
+ struct xe_device *xe = to_xe_device(display->drm);
struct xe_tile *tile = xe_device_get_root_tile(xe);
struct xe_gt *gt = tile->media_gt;
struct xe_gsc *gsc;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 323/337] drm/i915/hdcp: require monotonically increasing seq_num_v
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (320 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 322/337] drm/i915/hdcp: Move to using intel_display in intel_hdcp Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 324/337] drm/i915/hdcp: Skip inactive MST connectors when building stream list Greg Kroah-Hartman
` (21 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Suraj Kandpal,
Jani Nikula, Joonas Lahtinen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jani Nikula <jani.nikula@intel.com>
[ Upstream commit db9e64c983dcb07ff256bd455f258c44aa530ff8 ]
The HDCP 2.2 specification requires the seq_num_v to be monotonically
increasing, and repeated seq_num_v needs to be treated as an integrity
failure. Make it so.
For the first message, seq_num_v must be zero, and is already
checked. We can only check for less-than-or-equal for the subsequent
messages, where hdcp2_encrypted is true.
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: d849178e2c9e ("drm/i915: Implement HDCP2.2 repeater authentication")
Cc: stable@vger.kernel.org # v5.2+
Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260625104407.1025614-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 58a224375c81179b52558c53d8857b93196d2687)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -1742,9 +1742,10 @@ int hdcp2_authenticate_repeater_topology
return -EINVAL;
}
- if (seq_num_v < hdcp->seq_num_v) {
- /* Roll over of the seq_num_v from repeater. Reauthenticate. */
- drm_dbg_kms(display->drm, "Seq_num_v roll over.\n");
+ if (hdcp->hdcp2_encrypted && seq_num_v <= hdcp->seq_num_v) {
+ /* Reauthenticate on Seq_num_v repeat or rollover */
+ drm_dbg_kms(display->drm, "Seq_num_v %s\n",
+ seq_num_v == hdcp->seq_num_v ? "repeat" : "rollover");
return -EINVAL;
}
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 324/337] drm/i915/hdcp: Skip inactive MST connectors when building stream list
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (321 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 323/337] drm/i915/hdcp: require monotonically increasing seq_num_v Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 325/337] drm/i915/hdcp: check streams[] bounds before overflow Greg Kroah-Hartman
` (20 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Suraj Kandpal,
Santhosh Reddy Guddati, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Suraj Kandpal <suraj.kandpal@intel.com>
[ Upstream commit 0161e2c2016337a2f22ef79dff0aee43c0841bce ]
intel_hdcp_required_content_stream() walks every connector on the
digital port to populate hdcp_port_data->streams[]. The only filter is
connector_status_disconnected, which reflects physical presence on the
MST topology, not whether the connector currently drives a stream.
On a multi-sink MST setup where only a subset of sinks are modeset,
the loop can pick a sibling MST connector that is connected but has
no active CRTC / VC payload. intel_conn_to_vcpi() then logs "MST
Payload not present" and returns 0, and the bogus StreamID=0 is
written to the repeater in RepeaterAuth_Stream_Manage (DPCD 0x693F0).
Authentication completes, but the repeater shortly raises
LINK_INTEGRITY_FAILURE (RxStatus 0x69493 bit4) because the StreamID
does not match any stream on its input. The HDCP check work then
tears the link down, the Content Protection property drops back to
DESIRED, and userspace observes a spurious HDCP enable failure.
Filter the connector iteration to only those with a CRTC assigned in
the new atomic state, so intel_conn_to_vcpi() is called for the
connector actually being enabled and reads its real VCPI from the MST
topology state.
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Santhosh Reddy Guddati <santhosh.reddy.guddati@intel.com>
Link: https://patch.msgid.link/20260505094022.4064256-1-suraj.kandpal@intel.com
Stable-dep-of: bbb15a6b042d ("drm/i915/hdcp: check streams[] bounds before overflow")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -97,6 +97,7 @@ intel_hdcp_required_content_stream(struc
{
struct intel_display *display = to_intel_display(state);
struct drm_connector_list_iter conn_iter;
+ struct drm_connector_state *new_conn_state;
struct intel_digital_port *conn_dig_port;
struct intel_connector *connector;
struct hdcp_port_data *data = &dig_port->hdcp_port_data;
@@ -123,6 +124,11 @@ intel_hdcp_required_content_stream(struc
if (conn_dig_port != dig_port)
continue;
+ new_conn_state = drm_atomic_get_new_connector_state(&state->base,
+ &connector->base);
+ if (!new_conn_state || !new_conn_state->crtc)
+ continue;
+
data->streams[data->k].stream_id =
intel_conn_to_vcpi(state, connector);
data->k++;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 325/337] drm/i915/hdcp: check streams[] bounds before overflow
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (322 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 324/337] drm/i915/hdcp: Skip inactive MST connectors when building stream list Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 326/337] drm/xe: Stub out new pagefault layer Greg Kroah-Hartman
` (19 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Martin Hodo, Anshuman Gupta,
Suraj Kandpal, Jani Nikula, Joonas Lahtinen, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jani Nikula <jani.nikula@intel.com>
[ Upstream commit bbb15a6b042d02e5508a02b4847e02d2579ee7bc ]
The data->streams[] overflow check is done after the buffer overflow has
already happened. Move the overflow check before the write.
Side note, emitting a warning splat with a backtrace might be overkill
here, but prefer not changing the behaviour other than not doing the
overrun.
Discovered using AI-assisted static analysis confirmed by Intel Product
Security.
Reported-by: Martin Hodo <martin.hodo@intel.com>
Fixes: e03187e12cae ("drm/i915/hdcp: MST streams support in hdcp port_data")
Cc: stable@vger.kernel.org # v5.12+
Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260625170304.1104723-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 9284ab3b6e776c315883ac2611283d263c9460fd)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -129,6 +129,9 @@ intel_hdcp_required_content_stream(struc
if (!new_conn_state || !new_conn_state->crtc)
continue;
+ if (drm_WARN_ON(display->drm, data->k >= INTEL_NUM_PIPES(display)))
+ return -EINVAL;
+
data->streams[data->k].stream_id =
intel_conn_to_vcpi(state, connector);
data->k++;
@@ -139,7 +142,7 @@ intel_hdcp_required_content_stream(struc
}
drm_connector_list_iter_end(&conn_iter);
- if (drm_WARN_ON(display->drm, data->k > INTEL_NUM_PIPES(display) || data->k == 0))
+ if (drm_WARN_ON(display->drm, !data->k))
return -EINVAL;
/*
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 326/337] drm/xe: Stub out new pagefault layer
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (323 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 325/337] drm/i915/hdcp: check streams[] bounds before overflow Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 327/337] drm/xe/pt: Reset current_op in xe_pt_update_ops_init() Greg Kroah-Hartman
` (18 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthew Brost, Lucas De Marchi,
Francois Dugast, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Brost <matthew.brost@intel.com>
[ Upstream commit 620a09fb0bddf387f418663478b48ca4ba62b6d6 ]
Stub out the new page fault layer and add kernel documentation. This is
intended as a replacement for the GT page fault layer, enabling multiple
producers to hook into a shared page fault consumer interface.
v2:
- Fix kernel doc typo (checkpatch)
- Remove comment around GT (Stuart)
- Add explaination around reclaim (Francois)
- Add comment around u8 vs enum (Francois)
- Include engine instance (Stuart)
v3:
- Fix XE_PAGEFAULT_TYPE_ATOMIC_ACCESS_VIOLATION kernel doc (Stuart)
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Tested-by: Francois Dugast <francois.dugast@intel.com>
Link: https://patch.msgid.link/20251031165416.2871503-2-matthew.brost@intel.com
Stable-dep-of: 6384271ac1ac ("drm/xe/pt: Reset current_op in xe_pt_update_ops_init()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/xe/Makefile | 1
drivers/gpu/drm/xe/xe_pagefault.c | 65 +++++++++++++++
drivers/gpu/drm/xe/xe_pagefault.h | 19 ++++
drivers/gpu/drm/xe/xe_pagefault_types.h | 136 ++++++++++++++++++++++++++++++++
4 files changed, 221 insertions(+)
create mode 100644 drivers/gpu/drm/xe/xe_pagefault.c
create mode 100644 drivers/gpu/drm/xe/xe_pagefault.h
create mode 100644 drivers/gpu/drm/xe/xe_pagefault_types.h
--- a/drivers/gpu/drm/xe/Makefile
+++ b/drivers/gpu/drm/xe/Makefile
@@ -78,6 +78,7 @@ xe-y += xe_bb.o \
xe_module.o \
xe_oa.o \
xe_observation.o \
+ xe_pagefault.o \
xe_pat.o \
xe_pci.o \
xe_pcode.o \
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_pagefault.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#include "xe_pagefault.h"
+#include "xe_pagefault_types.h"
+
+/**
+ * DOC: Xe page faults
+ *
+ * Xe page faults are handled in two layers. The producer layer interacts with
+ * hardware or firmware to receive and parse faults into struct xe_pagefault,
+ * then forwards them to the consumer. The consumer layer services the faults
+ * (e.g., memory migration, page table updates) and acknowledges the result back
+ * to the producer, which then forwards the results to the hardware or firmware.
+ * The consumer uses a page fault queue sized to absorb all potential faults and
+ * a multi-threaded worker to process them. Multiple producers are supported,
+ * with a single shared consumer.
+ *
+ * xe_pagefault.c implements the consumer layer.
+ */
+
+/**
+ * xe_pagefault_init() - Page fault init
+ * @xe: xe device instance
+ *
+ * Initialize Xe page fault state. Must be done after reading fuses.
+ *
+ * Return: 0 on Success, errno on failure
+ */
+int xe_pagefault_init(struct xe_device *xe)
+{
+ /* TODO - implement */
+ return 0;
+}
+
+/**
+ * xe_pagefault_reset() - Page fault reset for a GT
+ * @xe: xe device instance
+ * @gt: GT being reset
+ *
+ * Reset the Xe page fault state for a GT; that is, squash any pending faults on
+ * the GT.
+ */
+void xe_pagefault_reset(struct xe_device *xe, struct xe_gt *gt)
+{
+ /* TODO - implement */
+}
+
+/**
+ * xe_pagefault_handler() - Page fault handler
+ * @xe: xe device instance
+ * @pf: Page fault
+ *
+ * Sink the page fault to a queue (i.e., a memory buffer) and queue a worker to
+ * service it. Safe to be called from IRQ or process context. Reclaim safe.
+ *
+ * Return: 0 on success, errno on failure
+ */
+int xe_pagefault_handler(struct xe_device *xe, struct xe_pagefault *pf)
+{
+ /* TODO - implement */
+ return 0;
+}
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_pagefault.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#ifndef _XE_PAGEFAULT_H_
+#define _XE_PAGEFAULT_H_
+
+struct xe_device;
+struct xe_gt;
+struct xe_pagefault;
+
+int xe_pagefault_init(struct xe_device *xe);
+
+void xe_pagefault_reset(struct xe_device *xe, struct xe_gt *gt);
+
+int xe_pagefault_handler(struct xe_device *xe, struct xe_pagefault *pf);
+
+#endif
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_pagefault_types.h
@@ -0,0 +1,136 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#ifndef _XE_PAGEFAULT_TYPES_H_
+#define _XE_PAGEFAULT_TYPES_H_
+
+#include <linux/workqueue.h>
+
+struct xe_gt;
+struct xe_pagefault;
+
+/** enum xe_pagefault_access_type - Xe page fault access type */
+enum xe_pagefault_access_type {
+ /** @XE_PAGEFAULT_ACCESS_TYPE_READ: Read access type */
+ XE_PAGEFAULT_ACCESS_TYPE_READ = 0,
+ /** @XE_PAGEFAULT_ACCESS_TYPE_WRITE: Write access type */
+ XE_PAGEFAULT_ACCESS_TYPE_WRITE = 1,
+ /** @XE_PAGEFAULT_ACCESS_TYPE_ATOMIC: Atomic access type */
+ XE_PAGEFAULT_ACCESS_TYPE_ATOMIC = 2,
+};
+
+/** enum xe_pagefault_type - Xe page fault type */
+enum xe_pagefault_type {
+ /** @XE_PAGEFAULT_TYPE_NOT_PRESENT: Not present */
+ XE_PAGEFAULT_TYPE_NOT_PRESENT = 0,
+ /** @XE_PAGEFAULT_TYPE_WRITE_ACCESS_VIOLATION: Write access violation */
+ XE_PAGEFAULT_TYPE_WRITE_ACCESS_VIOLATION = 1,
+ /** @XE_PAGEFAULT_TYPE_ATOMIC_ACCESS_VIOLATION: Atomic access violation */
+ XE_PAGEFAULT_TYPE_ATOMIC_ACCESS_VIOLATION = 2,
+};
+
+/** struct xe_pagefault_ops - Xe pagefault ops (producer) */
+struct xe_pagefault_ops {
+ /**
+ * @ack_fault: Ack fault
+ * @pf: Page fault
+ * @err: Error state of fault
+ *
+ * Page fault producer receives acknowledgment from the consumer and
+ * sends the result to the HW/FW interface.
+ */
+ void (*ack_fault)(struct xe_pagefault *pf, int err);
+};
+
+/**
+ * struct xe_pagefault - Xe page fault
+ *
+ * Generic page fault structure for communication between producer and consumer.
+ * Carefully sized to be 64 bytes. Upon a device page fault, the producer
+ * populates this structure, and the consumer copies it into the page-fault
+ * queue for deferred handling.
+ */
+struct xe_pagefault {
+ /**
+ * @gt: GT of fault
+ */
+ struct xe_gt *gt;
+ /**
+ * @consumer: State for the software handling the fault. Populated by
+ * the producer and may be modified by the consumer to communicate
+ * information back to the producer upon fault acknowledgment.
+ */
+ struct {
+ /** @consumer.page_addr: address of page fault */
+ u64 page_addr;
+ /** @consumer.asid: address space ID */
+ u32 asid;
+ /**
+ * @consumer.access_type: access type, u8 rather than enum to
+ * keep size compact
+ */
+ u8 access_type;
+ /**
+ * @consumer.fault_type: fault type, u8 rather than enum to
+ * keep size compact
+ */
+ u8 fault_type;
+#define XE_PAGEFAULT_LEVEL_NACK 0xff /* Producer indicates nack fault */
+ /** @consumer.fault_level: fault level */
+ u8 fault_level;
+ /** @consumer.engine_class: engine class */
+ u8 engine_class;
+ /** @consumer.engine_instance: engine instance */
+ u8 engine_instance;
+ /** consumer.reserved: reserved bits for future expansion */
+ u8 reserved[7];
+ } consumer;
+ /**
+ * @producer: State for the producer (i.e., HW/FW interface). Populated
+ * by the producer and should not be modified—or even inspected—by the
+ * consumer, except for calling operations.
+ */
+ struct {
+ /** @producer.private: private pointer */
+ void *private;
+ /** @producer.ops: operations */
+ const struct xe_pagefault_ops *ops;
+#define XE_PAGEFAULT_PRODUCER_MSG_LEN_DW 4
+ /**
+ * @producer.msg: page fault message, used by producer in fault
+ * acknowledgment to formulate response to HW/FW interface.
+ * Included in the page-fault message because the producer
+ * typically receives the fault in a context where memory cannot
+ * be allocated (e.g., atomic context or the reclaim path).
+ */
+ u32 msg[XE_PAGEFAULT_PRODUCER_MSG_LEN_DW];
+ } producer;
+};
+
+/**
+ * struct xe_pagefault_queue: Xe pagefault queue (consumer)
+ *
+ * Used to capture all device page faults for deferred processing. Size this
+ * queue to absorb the device’s worst-case number of outstanding faults.
+ */
+struct xe_pagefault_queue {
+ /**
+ * @data: Data in queue containing struct xe_pagefault, protected by
+ * @lock
+ */
+ void *data;
+ /** @size: Size of queue in bytes */
+ u32 size;
+ /** @head: Head pointer in bytes, moved by producer, protected by @lock */
+ u32 head;
+ /** @tail: Tail pointer in bytes, moved by consumer, protected by @lock */
+ u32 tail;
+ /** @lock: protects page fault queue */
+ spinlock_t lock;
+ /** @worker: to process page faults */
+ struct work_struct worker;
+};
+
+#endif
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 327/337] drm/xe/pt: Reset current_op in xe_pt_update_ops_init()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (324 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 326/337] drm/xe: Stub out new pagefault layer Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 328/337] rxrpc: Generate rtt_min Greg Kroah-Hartman
` (17 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Matthew Auld, Zongyao Bai,
Matthew Brost, Thomas Hellström, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zongyao Bai <zongyao.bai@intel.com>
[ Upstream commit 6384271ac1ac0099198d15df79212a19ebdb929d ]
xe_pt_update_ops_init() fails to reset current_op to 0. On the
vm_bind path, ops_execute() calls xe_pt_update_ops_prepare() inside
the xe_validation_guard() / drm_exec_until_all_locked() loop. When
that loop retries due to lock contention or OOM eviction
(drm_exec_retry_on_contention() / xe_validation_retry_on_oom()),
xe_pt_update_ops_prepare() runs again on the same vops, and each
call to bind_op_prepare() increments current_op without resetting it.
After N retries current_op exceeds the array size allocated by
xe_vma_ops_alloc(), causing an out-of-bounds write into
SLUB-poisoned memory and a subsequent UAF crash in
xe_migrate_update_pgtables_cpu() when reading the corrupted pt_op->bind.
Also reset needs_svm_lock and needs_invalidation which are derived in
the same prepare pass and would otherwise cause wrong migrate ops
selection and redundant TLB invalidation on retry.
Fix this by resetting current_op, needs_svm_lock and needs_invalidation
in xe_pt_update_ops_init().
v2 (Matt):
- Add details in commit message.
- Add Fixes tag and Cc to stable@vger.kernel.org
Fixes: e8babb280b5e ("drm/xe: Convert multiple bind ops into single job")
Suggested-by: Matthew Auld <matthew.auld@intel.com>
Cc: stable@vger.kernel.org
Assisted-by: GitHub-Copilot:claude-sonnet-4.6
Signed-off-by: Zongyao Bai <zongyao.bai@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260714232433.2737533-1-zongyao.bai@intel.com
(cherry picked from commit 046045543e530605c441063535e7dca0075369a6)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/xe/xe_pt.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/xe/xe_pt.c
+++ b/drivers/gpu/drm/xe/xe_pt.c
@@ -1833,8 +1833,11 @@ static void
xe_pt_update_ops_init(struct xe_vm_pgtable_update_ops *pt_update_ops)
{
init_llist_head(&pt_update_ops->deferred);
+ pt_update_ops->current_op = 0;
pt_update_ops->start = ~0x0ull;
pt_update_ops->last = 0x0ull;
+ pt_update_ops->needs_userptr_lock = false;
+ pt_update_ops->needs_invalidation = false;
}
/**
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 328/337] rxrpc: Generate rtt_min
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (325 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 327/337] drm/xe/pt: Reset current_op in xe_pt_update_ops_init() Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 329/337] rxrpc: Adjust the rxrpc_rtt_rx tracepoint Greg Kroah-Hartman
` (16 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Howells, Marc Dionne,
linux-afs, Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Howells <dhowells@redhat.com>
[ Upstream commit c637bd066841de6d0a204898a62f1d9bb8fa1b7f ]
Generate rtt_min as this is required by RACK-TLP.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://patch.msgid.link/20241204074710.990092-27-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: e4d2878369d5 ("rxrpc: Fix irq-disabled in local_bh_enable()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
lib/win_minmax.c | 1 +
net/rxrpc/ar-internal.h | 2 ++
net/rxrpc/rtt.c | 20 ++++++++++++++++----
3 files changed, 19 insertions(+), 4 deletions(-)
--- a/lib/win_minmax.c
+++ b/lib/win_minmax.c
@@ -97,3 +97,4 @@ u32 minmax_running_min(struct minmax *m,
return minmax_subwin_update(m, win, &val);
}
+EXPORT_SYMBOL(minmax_running_min);
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -349,6 +349,8 @@ struct rxrpc_peer {
spinlock_t rtt_input_lock; /* RTT lock for input routine */
ktime_t rtt_last_req; /* Time of last RTT request */
unsigned int rtt_count; /* Number of samples we've got */
+ unsigned int rtt_taken; /* Number of samples taken (wrapping) */
+ struct minmax min_rtt; /* Estimated minimum RTT */
u32 srtt_us; /* smoothed round trip time << 3 in usecs */
u32 mdev_us; /* medium deviation */
--- a/net/rxrpc/rtt.c
+++ b/net/rxrpc/rtt.c
@@ -127,16 +127,27 @@ static void rxrpc_set_rto(struct rxrpc_p
peer->rto_us = rxrpc_bound_rto(rto);
}
-static void rxrpc_ack_update_rtt(struct rxrpc_peer *peer, long rtt_us)
+static void rxrpc_update_rtt_min(struct rxrpc_peer *peer, ktime_t resp_time, long rtt_us)
+{
+ /* Window size 5mins in approx usec (ipv4.sysctl_tcp_min_rtt_wlen) */
+ u32 wlen_us = 5ULL * NSEC_PER_SEC / 1024;
+
+ minmax_running_min(&peer->min_rtt, wlen_us, resp_time / 1024,
+ (u32)rtt_us ? : jiffies_to_usecs(1));
+}
+
+static void rxrpc_ack_update_rtt(struct rxrpc_peer *peer, ktime_t resp_time, long rtt_us)
{
if (rtt_us < 0)
return;
- //rxrpc_update_rtt_min(peer, rtt_us);
+ /* Update RACK min RTT [RFC8985 6.1 Step 1]. */
+ rxrpc_update_rtt_min(peer, resp_time, rtt_us);
+
rxrpc_rtt_estimator(peer, rtt_us);
rxrpc_set_rto(peer);
- /* RFC6298: only reset backoff on valid RTT measurement. */
+ /* Only reset backoff on valid RTT measurement [RFC6298]. */
peer->backoff = 0;
}
@@ -157,9 +168,10 @@ void rxrpc_peer_add_rtt(struct rxrpc_cal
return;
spin_lock(&peer->rtt_input_lock);
- rxrpc_ack_update_rtt(peer, rtt_us);
+ rxrpc_ack_update_rtt(peer, resp_time, rtt_us);
if (peer->rtt_count < 3)
peer->rtt_count++;
+ peer->rtt_taken++;
spin_unlock(&peer->rtt_input_lock);
trace_rxrpc_rtt_rx(call, why, rtt_slot, send_serial, resp_serial,
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 329/337] rxrpc: Adjust the rxrpc_rtt_rx tracepoint
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (326 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 328/337] rxrpc: Generate rtt_min Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 330/337] rxrpc: Fix the calculation and use of RTO Greg Kroah-Hartman
` (15 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Howells, Marc Dionne,
linux-afs, Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Howells <dhowells@redhat.com>
[ Upstream commit 93dfca65a1df42a3c8b1094299dc42ab8f18e5c8 ]
Adjust the rxrpc_rtt_rx tracepoint in the following ways:
(1) Display the collected RTT sample in the rxrpc_rtt_rx trace.
(2) Move the division of srtt by 8 to the TP_printk() rather doing it
before invoking the trace point.
(3) Display the min_rtt value.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: e4d2878369d5 ("rxrpc: Fix irq-disabled in local_bh_enable()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/trace/events/rxrpc.h | 14 ++++++++++----
net/rxrpc/input.c | 4 ++--
net/rxrpc/rtt.c | 2 +-
3 files changed, 13 insertions(+), 7 deletions(-)
--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -1308,9 +1308,9 @@ TRACE_EVENT(rxrpc_rtt_rx,
TP_PROTO(struct rxrpc_call *call, enum rxrpc_rtt_rx_trace why,
int slot,
rxrpc_serial_t send_serial, rxrpc_serial_t resp_serial,
- u32 rtt, u32 rto),
+ u32 rtt, u32 srtt, u32 rto),
- TP_ARGS(call, why, slot, send_serial, resp_serial, rtt, rto),
+ TP_ARGS(call, why, slot, send_serial, resp_serial, rtt, srtt, rto),
TP_STRUCT__entry(
__field(unsigned int, call)
@@ -1319,7 +1319,9 @@ TRACE_EVENT(rxrpc_rtt_rx,
__field(rxrpc_serial_t, send_serial)
__field(rxrpc_serial_t, resp_serial)
__field(u32, rtt)
+ __field(u32, srtt)
__field(u32, rto)
+ __field(u32, min_rtt)
),
TP_fast_assign(
@@ -1329,17 +1331,21 @@ TRACE_EVENT(rxrpc_rtt_rx,
__entry->send_serial = send_serial;
__entry->resp_serial = resp_serial;
__entry->rtt = rtt;
+ __entry->srtt = srtt;
__entry->rto = rto;
+ __entry->min_rtt = minmax_get(&call->peer->min_rtt)
),
- TP_printk("c=%08x [%d] %s sr=%08x rr=%08x rtt=%u rto=%u",
+ TP_printk("c=%08x [%d] %s sr=%08x rr=%08x rtt=%u srtt=%u rto=%u min=%u",
__entry->call,
__entry->slot,
__print_symbolic(__entry->why, rxrpc_rtt_rx_traces),
__entry->send_serial,
__entry->resp_serial,
__entry->rtt,
- __entry->rto)
+ __entry->srtt / 8,
+ __entry->rto,
+ __entry->min_rtt)
);
TRACE_EVENT(rxrpc_timer_set,
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -674,7 +674,7 @@ static void rxrpc_complete_rtt_probe(str
*/
if (after(acked_serial, orig_serial)) {
trace_rxrpc_rtt_rx(call, rxrpc_rtt_rx_obsolete, i,
- orig_serial, acked_serial, 0, 0);
+ orig_serial, acked_serial, 0, 0, 0);
clear_bit(i + RXRPC_CALL_RTT_PEND_SHIFT, &call->rtt_avail);
smp_wmb();
set_bit(i, &call->rtt_avail);
@@ -682,7 +682,7 @@ static void rxrpc_complete_rtt_probe(str
}
if (!matched)
- trace_rxrpc_rtt_rx(call, rxrpc_rtt_rx_lost, 9, 0, acked_serial, 0, 0);
+ trace_rxrpc_rtt_rx(call, rxrpc_rtt_rx_lost, 9, 0, acked_serial, 0, 0, 0);
}
/*
--- a/net/rxrpc/rtt.c
+++ b/net/rxrpc/rtt.c
@@ -175,7 +175,7 @@ void rxrpc_peer_add_rtt(struct rxrpc_cal
spin_unlock(&peer->rtt_input_lock);
trace_rxrpc_rtt_rx(call, why, rtt_slot, send_serial, resp_serial,
- peer->srtt_us >> 3, peer->rto_us);
+ rtt_us, peer->srtt_us, peer->rto_us);
}
/*
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 330/337] rxrpc: Fix the calculation and use of RTO
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (327 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 329/337] rxrpc: Adjust the rxrpc_rtt_rx tracepoint Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 331/337] rxrpc: Manage RTT per-call rather than per-peer Greg Kroah-Hartman
` (14 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Howells, Simon Wilkinson,
Marc Dionne, linux-afs, Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Howells <dhowells@redhat.com>
[ Upstream commit 5c0ceba23bb47085d6c9c53bff08a29634ee4e7e ]
Make the following changes to the calculation and use of RTO:
(1) Fix rxrpc_resend() to use the backed-off RTO value obtained by calling
rxrpc_get_rto_backoff() rather than extracting the value itself.
Without this, it may retransmit packets too early.
(2) The RTO value being similar to the RTT causes a lot of extraneous
resends because the RTT doesn't end up taking account of clearing out
of the receive queue on the server. Worse, responses to PING-ACKs are
made as fast as possible and so are less than the DATA-requested-ACK
RTT and so skew the RTT down.
Fix this by putting a lower bound on the RTO by adding 100ms to it and
limiting the lower end to 200ms.
Fixes: c410bf01933e ("rxrpc: Fix the excessive initial retransmission timeout")
Fixes: 37473e416234 ("rxrpc: Clean up the resend algorithm")
Signed-off-by: David Howells <dhowells@redhat.com>
Suggested-by: Simon Wilkinson <sxw@auristor.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: e4d2878369d5 ("rxrpc: Fix irq-disabled in local_bh_enable()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/rxrpc/call_event.c | 3 ++-
net/rxrpc/rtt.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -71,7 +71,8 @@ void rxrpc_resend(struct rxrpc_call *cal
struct rxrpc_skb_priv *sp;
struct rxrpc_txbuf *txb;
rxrpc_seq_t transmitted = call->tx_transmitted;
- ktime_t next_resend = KTIME_MAX, rto = ns_to_ktime(call->peer->rto_us * NSEC_PER_USEC);
+ ktime_t next_resend = KTIME_MAX;
+ ktime_t rto = rxrpc_get_rto_backoff(call->peer, false);
ktime_t resend_at = KTIME_MAX, now, delay;
bool unacked = false, did_send = false;
unsigned int i;
--- a/net/rxrpc/rtt.c
+++ b/net/rxrpc/rtt.c
@@ -27,7 +27,7 @@ static u32 __rxrpc_set_rto(const struct
static u32 rxrpc_bound_rto(u32 rto)
{
- return min(rto, RXRPC_RTO_MAX);
+ return clamp(200000, rto + 100000, RXRPC_RTO_MAX);
}
/*
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 331/337] rxrpc: Manage RTT per-call rather than per-peer
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (328 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 330/337] rxrpc: Fix the calculation and use of RTO Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 332/337] rxrpc: Fix irq-disabled in local_bh_enable() Greg Kroah-Hartman
` (13 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Howells, Marc Dionne,
linux-afs, Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Howells <dhowells@redhat.com>
[ Upstream commit b40ef2b85a7d117dd323b5910e504899e0a3e7dc ]
Manage the determination of RTT on a per-call (ie. per-RPC op) basis rather
than on a per-peer basis, averaging across all calls going to that peer.
The problem is that the RTT measurements from the initial packets on a call
may be off because the server may do some setting up (such as getting a
lock on a file) before accepting the rest of the data in the RPC and,
further, the RTT may be affected by server-side file operations, for
instance if a large amount of data is being written or read.
Note: When handling the FS.StoreData-type RPCs, for example, the server
uses the userStatus field in the header of ACK packets as supplementary
flow control to aid in managing this. AF_RXRPC does not yet support this,
but it should be added.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: e4d2878369d5 ("rxrpc: Fix irq-disabled in local_bh_enable()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
include/trace/events/rxrpc.h | 2
net/rxrpc/ar-internal.h | 39 +++++++++---------
net/rxrpc/call_event.c | 18 ++++----
net/rxrpc/call_object.c | 2
net/rxrpc/input.c | 8 +--
net/rxrpc/output.c | 14 +++---
net/rxrpc/peer_object.c | 8 ---
net/rxrpc/proc.c | 6 +-
net/rxrpc/rtt.c | 93 +++++++++++++++++++++----------------------
net/rxrpc/sendmsg.c | 2
10 files changed, 97 insertions(+), 95 deletions(-)
--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -1333,7 +1333,7 @@ TRACE_EVENT(rxrpc_rtt_rx,
__entry->rtt = rtt;
__entry->srtt = srtt;
__entry->rto = rto;
- __entry->min_rtt = minmax_get(&call->peer->min_rtt)
+ __entry->min_rtt = minmax_get(&call->min_rtt)
),
TP_printk("c=%08x [%d] %s sr=%08x rr=%08x rtt=%u srtt=%u rto=%u min=%u",
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -344,20 +344,9 @@ struct rxrpc_peer {
int debug_id; /* debug ID for printks */
struct sockaddr_rxrpc srx; /* remote address */
- /* calculated RTT cache */
-#define RXRPC_RTT_CACHE_SIZE 32
- spinlock_t rtt_input_lock; /* RTT lock for input routine */
- ktime_t rtt_last_req; /* Time of last RTT request */
- unsigned int rtt_count; /* Number of samples we've got */
- unsigned int rtt_taken; /* Number of samples taken (wrapping) */
- struct minmax min_rtt; /* Estimated minimum RTT */
-
- u32 srtt_us; /* smoothed round trip time << 3 in usecs */
- u32 mdev_us; /* medium deviation */
- u32 mdev_max_us; /* maximal mdev for the last rtt period */
- u32 rttvar_us; /* smoothed mdev_max */
- u32 rto_us; /* Retransmission timeout in usec */
- u8 backoff; /* Backoff timeout (as shift) */
+ /* Calculated RTT cache */
+ unsigned int recent_srtt_us;
+ unsigned int recent_rto_us;
u8 cong_ssthresh; /* Congestion slow-start threshold */
};
@@ -742,6 +731,18 @@ struct rxrpc_call {
rxrpc_seq_t acks_hard_ack; /* Latest hard-ack point */
rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */
rxrpc_serial_t acks_highest_serial; /* Highest serial number ACK'd */
+
+ /* Calculated RTT cache */
+ ktime_t rtt_last_req; /* Time of last RTT request */
+ unsigned int rtt_count; /* Number of samples we've got */
+ unsigned int rtt_taken; /* Number of samples taken (wrapping) */
+ struct minmax min_rtt; /* Estimated minimum RTT */
+ u32 srtt_us; /* smoothed round trip time << 3 in usecs */
+ u32 mdev_us; /* medium deviation */
+ u32 mdev_max_us; /* maximal mdev for the last rtt period */
+ u32 rttvar_us; /* smoothed mdev_max */
+ u32 rto_us; /* Retransmission timeout in usec */
+ u8 backoff; /* Backoff timeout (as shift) */
};
/*
@@ -1222,10 +1223,12 @@ static inline int rxrpc_abort_eproto(str
/*
* rtt.c
*/
-void rxrpc_peer_add_rtt(struct rxrpc_call *, enum rxrpc_rtt_rx_trace, int,
- rxrpc_serial_t, rxrpc_serial_t, ktime_t, ktime_t);
-ktime_t rxrpc_get_rto_backoff(struct rxrpc_peer *peer, bool retrans);
-void rxrpc_peer_init_rtt(struct rxrpc_peer *);
+void rxrpc_call_add_rtt(struct rxrpc_call *call, enum rxrpc_rtt_rx_trace why,
+ int rtt_slot,
+ rxrpc_serial_t send_serial, rxrpc_serial_t resp_serial,
+ ktime_t send_time, ktime_t resp_time);
+ktime_t rxrpc_get_rto_backoff(struct rxrpc_call *call, bool retrans);
+void rxrpc_call_init_rtt(struct rxrpc_call *call);
/*
* rxkad.c
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -44,8 +44,8 @@ void rxrpc_propose_delay_ACK(struct rxrp
trace_rxrpc_propose_ack(call, why, RXRPC_ACK_DELAY, serial);
- if (call->peer->srtt_us)
- delay = (call->peer->srtt_us >> 3) * NSEC_PER_USEC;
+ if (call->srtt_us)
+ delay = (call->srtt_us >> 3) * NSEC_PER_USEC;
else
delay = ms_to_ktime(READ_ONCE(rxrpc_soft_ack_delay));
ktime_add_ms(delay, call->tx_backoff);
@@ -72,7 +72,7 @@ void rxrpc_resend(struct rxrpc_call *cal
struct rxrpc_txbuf *txb;
rxrpc_seq_t transmitted = call->tx_transmitted;
ktime_t next_resend = KTIME_MAX;
- ktime_t rto = rxrpc_get_rto_backoff(call->peer, false);
+ ktime_t rto = rxrpc_get_rto_backoff(call, false);
ktime_t resend_at = KTIME_MAX, now, delay;
bool unacked = false, did_send = false;
unsigned int i;
@@ -174,7 +174,7 @@ void rxrpc_resend(struct rxrpc_call *cal
no_further_resend:
no_resend:
if (resend_at < KTIME_MAX) {
- delay = rxrpc_get_rto_backoff(call->peer, did_send);
+ delay = rxrpc_get_rto_backoff(call, did_send);
resend_at = ktime_add(resend_at, delay);
trace_rxrpc_timer_set(call, resend_at - now, rxrpc_timer_trace_resend_reset);
}
@@ -189,7 +189,7 @@ no_resend:
*/
if (!did_send) {
ktime_t next_ping = ktime_add_us(call->acks_latest_ts,
- call->peer->srtt_us >> 3);
+ call->srtt_us >> 3);
if (ktime_sub(next_ping, now) <= 0)
rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
@@ -306,8 +306,8 @@ static void rxrpc_transmit_some_data(str
*/
static void rxrpc_send_initial_ping(struct rxrpc_call *call)
{
- if (call->peer->rtt_count < 3 ||
- ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000),
+ if (call->rtt_count < 3 ||
+ ktime_before(ktime_add_ms(call->rtt_last_req, 1000),
ktime_get_real()))
rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
rxrpc_propose_ack_ping_for_params);
@@ -438,10 +438,10 @@ bool rxrpc_input_call_event(struct rxrpc
rxrpc_propose_ack_rx_idle);
if (call->ackr_nr_unacked > 2) {
- if (call->peer->rtt_count < 3)
+ if (call->rtt_count < 3)
rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
rxrpc_propose_ack_ping_for_rtt);
- else if (ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000),
+ else if (ktime_before(ktime_add_ms(call->rtt_last_req, 1000),
ktime_get_real()))
rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
rxrpc_propose_ack_ping_for_old_rtt);
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -178,6 +178,8 @@ struct rxrpc_call *rxrpc_alloc_call(stru
call->cong_cwnd = RXRPC_MIN_CWND;
call->cong_ssthresh = RXRPC_TX_MAX_WINDOW;
+ rxrpc_call_init_rtt(call);
+
call->rxnet = rxnet;
call->rtt_avail = RXRPC_CALL_RTT_AVAIL_MASK;
atomic_inc(&rxnet->nr_calls);
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -83,11 +83,11 @@ static void rxrpc_congestion_management(
/* We analyse the number of packets that get ACK'd per RTT
* period and increase the window if we managed to fill it.
*/
- if (call->peer->rtt_count == 0)
+ if (call->rtt_count == 0)
goto out;
if (ktime_before(skb->tstamp,
ktime_add_us(call->cong_tstamp,
- call->peer->srtt_us >> 3)))
+ call->srtt_us >> 3)))
goto out_no_clear_ca;
change = rxrpc_cong_rtt_window_end;
call->cong_tstamp = skb->tstamp;
@@ -197,7 +197,7 @@ void rxrpc_congestion_degrade(struct rxr
if (__rxrpc_call_state(call) == RXRPC_CALL_CLIENT_AWAIT_REPLY)
return;
- rtt = ns_to_ktime(call->peer->srtt_us * (1000 / 8));
+ rtt = ns_to_ktime(call->srtt_us * (NSEC_PER_USEC / 8));
now = ktime_get_real();
if (!ktime_before(ktime_add(call->tx_last_sent, rtt), now))
return;
@@ -664,7 +664,7 @@ static void rxrpc_complete_rtt_probe(str
clear_bit(i + RXRPC_CALL_RTT_PEND_SHIFT, &call->rtt_avail);
smp_mb(); /* Read data before setting avail bit */
set_bit(i, &call->rtt_avail);
- rxrpc_peer_add_rtt(call, type, i, acked_serial, ack_serial,
+ rxrpc_call_add_rtt(call, type, i, acked_serial, ack_serial,
sent_at, resp_time);
matched = true;
}
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -220,7 +220,7 @@ static void rxrpc_send_ack_packet(struct
if (ack->reason == RXRPC_ACK_PING)
rxrpc_begin_rtt_probe(call, txb->serial, now, rxrpc_rtt_tx_ping);
if (txb->flags & RXRPC_REQUEST_ACK)
- call->peer->rtt_last_req = now;
+ call->rtt_last_req = now;
rxrpc_set_keepalive(call, now);
}
rxrpc_tx_backoff(call, ret);
@@ -358,9 +358,9 @@ static void rxrpc_prepare_data_subpacket
why = rxrpc_reqack_slow_start;
else if (call->tx_winsize <= 2)
why = rxrpc_reqack_small_txwin;
- else if (call->peer->rtt_count < 3 && txb->seq & 1)
+ else if (call->rtt_count < 3)
why = rxrpc_reqack_more_rtt;
- else if (ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000), ktime_get_real()))
+ else if (ktime_before(ktime_add_ms(call->rtt_last_req, 1000), ktime_get_real()))
why = rxrpc_reqack_old_rtt;
else
goto dont_set_request_ack;
@@ -407,9 +407,9 @@ static void rxrpc_tstamp_data_packets(st
if (ack_requested) {
rxrpc_begin_rtt_probe(call, txb->serial, now, rxrpc_rtt_tx_data);
- call->peer->rtt_last_req = now;
- if (call->peer->rtt_count > 1) {
- ktime_t delay = rxrpc_get_rto_backoff(call->peer, false);
+ call->rtt_last_req = now;
+ if (call->rtt_count > 1) {
+ ktime_t delay = rxrpc_get_rto_backoff(call, false);
call->ack_lost_at = ktime_add(now, delay);
trace_rxrpc_timer_set(call, delay, rxrpc_timer_trace_lost_ack);
@@ -727,7 +727,7 @@ void rxrpc_transmit_one(struct rxrpc_cal
rxrpc_instant_resend(call, txb);
}
} else {
- ktime_t delay = ns_to_ktime(call->peer->rto_us * NSEC_PER_USEC);
+ ktime_t delay = ns_to_ktime(call->rto_us * NSEC_PER_USEC);
call->resend_at = ktime_add(ktime_get_real(), delay);
trace_rxrpc_timer_set(call, delay, rxrpc_timer_trace_resend_tx);
--- a/net/rxrpc/peer_object.c
+++ b/net/rxrpc/peer_object.c
@@ -222,11 +222,8 @@ struct rxrpc_peer *rxrpc_alloc_peer(stru
peer->service_conns = RB_ROOT;
seqlock_init(&peer->service_conn_lock);
spin_lock_init(&peer->lock);
- spin_lock_init(&peer->rtt_input_lock);
peer->debug_id = atomic_inc_return(&rxrpc_debug_id);
-
- rxrpc_peer_init_rtt(peer);
-
+ peer->recent_srtt_us = UINT_MAX;
peer->cong_ssthresh = RXRPC_TX_MAX_WINDOW;
trace_rxrpc_peer(peer->debug_id, 1, why);
}
@@ -244,7 +241,6 @@ static void rxrpc_init_peer(struct rxrpc
peer->hash_key = hash_key;
rxrpc_assess_MTU_size(local, peer);
peer->mtu = peer->if_mtu;
- peer->rtt_last_req = ktime_get_real();
switch (peer->srx.transport.family) {
case AF_INET:
@@ -480,7 +476,7 @@ EXPORT_SYMBOL(rxrpc_kernel_get_call_peer
*/
unsigned int rxrpc_kernel_get_srtt(const struct rxrpc_peer *peer)
{
- return peer->rtt_count > 0 ? peer->srtt_us >> 3 : UINT_MAX;
+ return READ_ONCE(peer->recent_srtt_us);
}
EXPORT_SYMBOL(rxrpc_kernel_get_srtt);
--- a/net/rxrpc/proc.c
+++ b/net/rxrpc/proc.c
@@ -299,15 +299,15 @@ static int rxrpc_peer_seq_show(struct se
now = ktime_get_seconds();
seq_printf(seq,
"UDP %-47.47s %-47.47s %3u"
- " %3u %5u %6ds %8u %8u\n",
+ " %3u %5u %6ds %8d %8d\n",
lbuff,
rbuff,
refcount_read(&peer->ref),
peer->cong_ssthresh,
peer->mtu,
(s32)now - (s32)READ_ONCE(peer->last_tx_at),
- peer->srtt_us >> 3,
- peer->rto_us);
+ READ_ONCE(peer->recent_srtt_us),
+ READ_ONCE(peer->recent_rto_us));
return 0;
}
--- a/net/rxrpc/rtt.c
+++ b/net/rxrpc/rtt.c
@@ -12,17 +12,17 @@
#include "ar-internal.h"
#define RXRPC_RTO_MAX (120 * USEC_PER_SEC)
-#define RXRPC_TIMEOUT_INIT ((unsigned int)(1 * MSEC_PER_SEC)) /* RFC6298 2.1 initial RTO value */
+#define RXRPC_TIMEOUT_INIT ((unsigned int)(1 * USEC_PER_SEC)) /* RFC6298 2.1 initial RTO value */
#define rxrpc_jiffies32 ((u32)jiffies) /* As rxrpc_jiffies32 */
-static u32 rxrpc_rto_min_us(struct rxrpc_peer *peer)
+static u32 rxrpc_rto_min_us(struct rxrpc_call *call)
{
return 200;
}
-static u32 __rxrpc_set_rto(const struct rxrpc_peer *peer)
+static u32 __rxrpc_set_rto(const struct rxrpc_call *call)
{
- return (peer->srtt_us >> 3) + peer->rttvar_us;
+ return (call->srtt_us >> 3) + call->rttvar_us;
}
static u32 rxrpc_bound_rto(u32 rto)
@@ -40,10 +40,10 @@ static u32 rxrpc_bound_rto(u32 rto)
* To save cycles in the RFC 1323 implementation it was better to break
* it up into three procedures. -- erics
*/
-static void rxrpc_rtt_estimator(struct rxrpc_peer *peer, long sample_rtt_us)
+static void rxrpc_rtt_estimator(struct rxrpc_call *call, long sample_rtt_us)
{
long m = sample_rtt_us; /* RTT */
- u32 srtt = peer->srtt_us;
+ u32 srtt = call->srtt_us;
/* The following amusing code comes from Jacobson's
* article in SIGCOMM '88. Note that rtt and mdev
@@ -66,7 +66,7 @@ static void rxrpc_rtt_estimator(struct r
srtt += m; /* rtt = 7/8 rtt + 1/8 new */
if (m < 0) {
m = -m; /* m is now abs(error) */
- m -= (peer->mdev_us >> 2); /* similar update on mdev */
+ m -= (call->mdev_us >> 2); /* similar update on mdev */
/* This is similar to one of Eifel findings.
* Eifel blocks mdev updates when rtt decreases.
* This solution is a bit different: we use finer gain
@@ -78,31 +78,31 @@ static void rxrpc_rtt_estimator(struct r
if (m > 0)
m >>= 3;
} else {
- m -= (peer->mdev_us >> 2); /* similar update on mdev */
+ m -= (call->mdev_us >> 2); /* similar update on mdev */
}
- peer->mdev_us += m; /* mdev = 3/4 mdev + 1/4 new */
- if (peer->mdev_us > peer->mdev_max_us) {
- peer->mdev_max_us = peer->mdev_us;
- if (peer->mdev_max_us > peer->rttvar_us)
- peer->rttvar_us = peer->mdev_max_us;
+ call->mdev_us += m; /* mdev = 3/4 mdev + 1/4 new */
+ if (call->mdev_us > call->mdev_max_us) {
+ call->mdev_max_us = call->mdev_us;
+ if (call->mdev_max_us > call->rttvar_us)
+ call->rttvar_us = call->mdev_max_us;
}
} else {
/* no previous measure. */
srtt = m << 3; /* take the measured time to be rtt */
- peer->mdev_us = m << 1; /* make sure rto = 3*rtt */
- peer->rttvar_us = max(peer->mdev_us, rxrpc_rto_min_us(peer));
- peer->mdev_max_us = peer->rttvar_us;
+ call->mdev_us = m << 1; /* make sure rto = 3*rtt */
+ call->rttvar_us = umax(call->mdev_us, rxrpc_rto_min_us(call));
+ call->mdev_max_us = call->rttvar_us;
}
- peer->srtt_us = max(1U, srtt);
+ call->srtt_us = umax(srtt, 1);
}
/*
* Calculate rto without backoff. This is the second half of Van Jacobson's
* routine referred to above.
*/
-static void rxrpc_set_rto(struct rxrpc_peer *peer)
+static void rxrpc_set_rto(struct rxrpc_call *call)
{
u32 rto;
@@ -113,7 +113,7 @@ static void rxrpc_set_rto(struct rxrpc_p
* is invisible. Actually, Linux-2.4 also generates erratic
* ACKs in some circumstances.
*/
- rto = __rxrpc_set_rto(peer);
+ rto = __rxrpc_set_rto(call);
/* 2. Fixups made earlier cannot be right.
* If we do not estimate RTO correctly without them,
@@ -124,73 +124,73 @@ static void rxrpc_set_rto(struct rxrpc_p
/* NOTE: clamping at RXRPC_RTO_MIN is not required, current algo
* guarantees that rto is higher.
*/
- peer->rto_us = rxrpc_bound_rto(rto);
+ call->rto_us = rxrpc_bound_rto(rto);
}
-static void rxrpc_update_rtt_min(struct rxrpc_peer *peer, ktime_t resp_time, long rtt_us)
+static void rxrpc_update_rtt_min(struct rxrpc_call *call, ktime_t resp_time, long rtt_us)
{
/* Window size 5mins in approx usec (ipv4.sysctl_tcp_min_rtt_wlen) */
u32 wlen_us = 5ULL * NSEC_PER_SEC / 1024;
- minmax_running_min(&peer->min_rtt, wlen_us, resp_time / 1024,
+ minmax_running_min(&call->min_rtt, wlen_us, resp_time / 1024,
(u32)rtt_us ? : jiffies_to_usecs(1));
}
-static void rxrpc_ack_update_rtt(struct rxrpc_peer *peer, ktime_t resp_time, long rtt_us)
+static void rxrpc_ack_update_rtt(struct rxrpc_call *call, ktime_t resp_time, long rtt_us)
{
if (rtt_us < 0)
return;
/* Update RACK min RTT [RFC8985 6.1 Step 1]. */
- rxrpc_update_rtt_min(peer, resp_time, rtt_us);
+ rxrpc_update_rtt_min(call, resp_time, rtt_us);
- rxrpc_rtt_estimator(peer, rtt_us);
- rxrpc_set_rto(peer);
+ rxrpc_rtt_estimator(call, rtt_us);
+ rxrpc_set_rto(call);
/* Only reset backoff on valid RTT measurement [RFC6298]. */
- peer->backoff = 0;
+ call->backoff = 0;
}
/*
* Add RTT information to cache. This is called in softirq mode and has
- * exclusive access to the peer RTT data.
+ * exclusive access to the call RTT data.
*/
-void rxrpc_peer_add_rtt(struct rxrpc_call *call, enum rxrpc_rtt_rx_trace why,
+void rxrpc_call_add_rtt(struct rxrpc_call *call, enum rxrpc_rtt_rx_trace why,
int rtt_slot,
rxrpc_serial_t send_serial, rxrpc_serial_t resp_serial,
ktime_t send_time, ktime_t resp_time)
{
- struct rxrpc_peer *peer = call->peer;
s64 rtt_us;
rtt_us = ktime_to_us(ktime_sub(resp_time, send_time));
if (rtt_us < 0)
return;
- spin_lock(&peer->rtt_input_lock);
- rxrpc_ack_update_rtt(peer, resp_time, rtt_us);
- if (peer->rtt_count < 3)
- peer->rtt_count++;
- peer->rtt_taken++;
- spin_unlock(&peer->rtt_input_lock);
+ rxrpc_ack_update_rtt(call, resp_time, rtt_us);
+ if (call->rtt_count < 3)
+ call->rtt_count++;
+ call->rtt_taken++;
+
+ WRITE_ONCE(call->peer->recent_srtt_us, call->srtt_us / 8);
+ WRITE_ONCE(call->peer->recent_rto_us, call->rto_us);
trace_rxrpc_rtt_rx(call, why, rtt_slot, send_serial, resp_serial,
- rtt_us, peer->srtt_us, peer->rto_us);
+ rtt_us, call->srtt_us, call->rto_us);
}
/*
* Get the retransmission timeout to set in nanoseconds, backing it off each
* time we retransmit.
*/
-ktime_t rxrpc_get_rto_backoff(struct rxrpc_peer *peer, bool retrans)
+ktime_t rxrpc_get_rto_backoff(struct rxrpc_call *call, bool retrans)
{
u64 timo_us;
- u32 backoff = READ_ONCE(peer->backoff);
+ u32 backoff = READ_ONCE(call->backoff);
- timo_us = peer->rto_us;
+ timo_us = call->rto_us;
timo_us <<= backoff;
if (retrans && timo_us * 2 <= RXRPC_RTO_MAX)
- WRITE_ONCE(peer->backoff, backoff + 1);
+ WRITE_ONCE(call->backoff, backoff + 1);
if (timo_us < 1)
timo_us = 1;
@@ -198,10 +198,11 @@ ktime_t rxrpc_get_rto_backoff(struct rxr
return ns_to_ktime(timo_us * NSEC_PER_USEC);
}
-void rxrpc_peer_init_rtt(struct rxrpc_peer *peer)
+void rxrpc_call_init_rtt(struct rxrpc_call *call)
{
- peer->rto_us = RXRPC_TIMEOUT_INIT;
- peer->mdev_us = RXRPC_TIMEOUT_INIT;
- peer->backoff = 0;
- //minmax_reset(&peer->rtt_min, rxrpc_jiffies32, ~0U);
+ call->rtt_last_req = KTIME_MIN;
+ call->rto_us = RXRPC_TIMEOUT_INIT;
+ call->mdev_us = RXRPC_TIMEOUT_INIT;
+ call->backoff = 0;
+ //minmax_reset(&call->rtt_min, rxrpc_jiffies32, ~0U);
}
--- a/net/rxrpc/sendmsg.c
+++ b/net/rxrpc/sendmsg.c
@@ -133,7 +133,7 @@ static int rxrpc_wait_for_tx_window_wait
rxrpc_seq_t tx_start, tx_win;
signed long rtt, timeout;
- rtt = READ_ONCE(call->peer->srtt_us) >> 3;
+ rtt = READ_ONCE(call->srtt_us) >> 3;
rtt = usecs_to_jiffies(rtt) * 2;
if (rtt < 2)
rtt = 2;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 332/337] rxrpc: Fix irq-disabled in local_bh_enable()
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (329 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 331/337] rxrpc: Manage RTT per-call rather than per-peer Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 333/337] can: use skb hash instead of private variable in headroom Greg Kroah-Hartman
` (12 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, David Howells, Jeffrey Altman,
Marc Dionne, Junvyyang, Tencent Zhuque Lab, LePremierHomme,
Simon Horman, linux-afs, Jakub Kicinski, Sasha Levin
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: David Howells <dhowells@redhat.com>
[ Upstream commit e4d2878369d590bf8455e3678a644e503172eafa ]
The rxrpc_assess_MTU_size() function calls down into the IP layer to find
out the MTU size for a route. When accepting an incoming call, this is
called from rxrpc_new_incoming_call() which holds interrupts disabled
across the code that calls down to it. Unfortunately, the IP layer uses
local_bh_enable() which, config dependent, throws a warning if IRQs are
enabled:
WARNING: CPU: 1 PID: 5544 at kernel/softirq.c:387 __local_bh_enable_ip+0x43/0xd0
...
RIP: 0010:__local_bh_enable_ip+0x43/0xd0
...
Call Trace:
<TASK>
rt_cache_route+0x7e/0xa0
rt_set_nexthop.isra.0+0x3b3/0x3f0
__mkroute_output+0x43a/0x460
ip_route_output_key_hash+0xf7/0x140
ip_route_output_flow+0x1b/0x90
rxrpc_assess_MTU_size.isra.0+0x2a0/0x590
rxrpc_new_incoming_peer+0x46/0x120
rxrpc_alloc_incoming_call+0x1b1/0x400
rxrpc_new_incoming_call+0x1da/0x5e0
rxrpc_input_packet+0x827/0x900
rxrpc_io_thread+0x403/0xb60
kthread+0x2f7/0x310
ret_from_fork+0x2a/0x230
ret_from_fork_asm+0x1a/0x30
...
hardirqs last enabled at (23): _raw_spin_unlock_irq+0x24/0x50
hardirqs last disabled at (24): _raw_read_lock_irq+0x17/0x70
softirqs last enabled at (0): copy_process+0xc61/0x2730
softirqs last disabled at (25): rt_add_uncached_list+0x3c/0x90
Fix this by moving the call to rxrpc_assess_MTU_size() out of
rxrpc_init_peer() and further up the stack where it can be done without
interrupts disabled.
It shouldn't be a problem for rxrpc_new_incoming_call() to do it after the
locks are dropped as pmtud is going to be performed by the I/O thread - and
we're in the I/O thread at this point.
Fixes: a2ea9a907260 ("rxrpc: Use irq-disabling spinlocks between app and I/O thread")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeffrey Altman <jaltman@auristor.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Junvyyang, Tencent Zhuque Lab <zhuque@tencent.com>
cc: LePremierHomme <kwqcheii@proton.me>
cc: Simon Horman <horms@kernel.org>
cc: linux-afs@lists.infradead.org
Link: https://patch.msgid.link/20250717074350.3767366-2-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/rxrpc/ar-internal.h | 1 +
net/rxrpc/call_accept.c | 1 +
net/rxrpc/peer_object.c | 12 +++++++-----
3 files changed, 9 insertions(+), 5 deletions(-)
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -1183,6 +1183,7 @@ struct rxrpc_peer *rxrpc_lookup_peer_rcu
const struct sockaddr_rxrpc *);
struct rxrpc_peer *rxrpc_lookup_peer(struct rxrpc_local *local,
struct sockaddr_rxrpc *srx, gfp_t gfp);
+void rxrpc_assess_MTU_size(struct rxrpc_local *local, struct rxrpc_peer *peer);
struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *, gfp_t,
enum rxrpc_peer_trace);
void rxrpc_new_incoming_peer(struct rxrpc_local *local, struct rxrpc_peer *peer);
--- a/net/rxrpc/call_accept.c
+++ b/net/rxrpc/call_accept.c
@@ -407,6 +407,7 @@ bool rxrpc_new_incoming_call(struct rxrp
spin_unlock(&rx->incoming_lock);
read_unlock_irq(&local->services_lock);
+ rxrpc_assess_MTU_size(local, call->peer);
if (hlist_unhashed(&call->error_link)) {
spin_lock_irq(&call->peer->lock);
--- a/net/rxrpc/peer_object.c
+++ b/net/rxrpc/peer_object.c
@@ -149,8 +149,7 @@ struct rxrpc_peer *rxrpc_lookup_peer_rcu
* assess the MTU size for the network interface through which this peer is
* reached
*/
-static void rxrpc_assess_MTU_size(struct rxrpc_local *local,
- struct rxrpc_peer *peer)
+void rxrpc_assess_MTU_size(struct rxrpc_local *local, struct rxrpc_peer *peer)
{
struct net *net = local->net;
struct dst_entry *dst;
@@ -162,6 +161,8 @@ static void rxrpc_assess_MTU_size(struct
#endif
peer->if_mtu = 1500;
+ peer->mtu = peer->if_mtu;
+ peer->maxdata = peer->mtu - peer->hdrsize;
memset(&fl, 0, sizeof(fl));
switch (peer->srx.transport.family) {
@@ -201,6 +202,9 @@ static void rxrpc_assess_MTU_size(struct
peer->if_mtu = dst_mtu(dst);
dst_release(dst);
+ peer->mtu = peer->if_mtu;
+ peer->maxdata = peer->mtu - peer->hdrsize;
+
_leave(" [if_mtu %u]", peer->if_mtu);
}
@@ -239,8 +243,6 @@ static void rxrpc_init_peer(struct rxrpc
unsigned long hash_key)
{
peer->hash_key = hash_key;
- rxrpc_assess_MTU_size(local, peer);
- peer->mtu = peer->if_mtu;
switch (peer->srx.transport.family) {
case AF_INET:
@@ -264,7 +266,6 @@ static void rxrpc_init_peer(struct rxrpc
}
peer->hdrsize += sizeof(struct rxrpc_wire_header);
- peer->maxdata = peer->mtu - peer->hdrsize;
}
/*
@@ -283,6 +284,7 @@ static struct rxrpc_peer *rxrpc_create_p
if (peer) {
memcpy(&peer->srx, srx, sizeof(*srx));
rxrpc_init_peer(local, peer, hash_key);
+ rxrpc_assess_MTU_size(local, peer);
}
_leave(" = %p", peer);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 333/337] can: use skb hash instead of private variable in headroom
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (330 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 332/337] rxrpc: Fix irq-disabled in local_bh_enable() Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 334/337] can: isotp: fix timer drain order, wakeup handling and tx_gen ordering Greg Kroah-Hartman
` (11 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Marc Kleine-Budde, Oliver Hartkopp,
Paolo Abeni
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit d4fb6514ff8ed6912a71294e6b66a5d59ee88007 upstream.
The can_skb_priv::skbcnt variable is used to identify CAN skbs in the RX
path analogue to the skb->hash.
As the skb hash is not filled in CAN skbs move the private skbcnt value to
skb->hash and set skb->sw_hash accordingly. The skb->hash is a value used
for RPS to identify skbs. Use it as intended.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260201-can_skb_ext-v8-1-3635d790fe8b@hartkopp.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/can/dev/skb.c | 2 --
include/linux/can/core.h | 1 +
include/linux/can/skb.h | 2 --
net/can/af_can.c | 14 +++++++++++---
net/can/bcm.c | 2 --
net/can/isotp.c | 3 ---
net/can/j1939/socket.c | 1 -
net/can/j1939/transport.c | 2 --
net/can/raw.c | 7 +++----
9 files changed, 15 insertions(+), 19 deletions(-)
--- a/drivers/net/can/dev/skb.c
+++ b/drivers/net/can/dev/skb.c
@@ -202,7 +202,6 @@ static void init_can_skb_reserve(struct
skb_reset_transport_header(skb);
can_skb_reserve(skb);
- can_skb_prv(skb)->skbcnt = 0;
}
struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
@@ -312,7 +311,6 @@ static bool can_skb_headroom_valid(struc
if (skb->ip_summed == CHECKSUM_NONE) {
/* init headroom */
can_skb_prv(skb)->ifindex = dev->ifindex;
- can_skb_prv(skb)->skbcnt = 0;
skb->ip_summed = CHECKSUM_UNNECESSARY;
--- a/include/linux/can/core.h
+++ b/include/linux/can/core.h
@@ -58,6 +58,7 @@ extern void can_rx_unregister(struct net
void *data);
extern int can_send(struct sk_buff *skb, int loop);
+void can_set_skb_uid(struct sk_buff *skb);
void can_sock_destruct(struct sock *sk);
#endif /* !_CAN_CORE_H */
--- a/include/linux/can/skb.h
+++ b/include/linux/can/skb.h
@@ -49,13 +49,11 @@ bool can_dropped_invalid_skb(struct net_
/**
* struct can_skb_priv - private additional data inside CAN sk_buffs
* @ifindex: ifindex of the first interface the CAN frame appeared on
- * @skbcnt: atomic counter to have an unique id together with skb pointer
* @frame_len: length of CAN frame in data link layer
* @cf: align to the following CAN frame at skb->data
*/
struct can_skb_priv {
int ifindex;
- int skbcnt;
unsigned int frame_len;
struct can_frame cf[];
};
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -639,6 +639,16 @@ static int can_rcv_filter(struct can_dev
return matches;
}
+void can_set_skb_uid(struct sk_buff *skb)
+{
+ /* create non-zero unique skb identifier together with *skb */
+ while (!(skb->hash))
+ skb->hash = atomic_inc_return(&skbcounter);
+
+ skb->sw_hash = 1;
+}
+EXPORT_SYMBOL(can_set_skb_uid);
+
static void can_receive(struct sk_buff *skb, struct net_device *dev)
{
struct can_dev_rcv_lists *dev_rcv_lists;
@@ -650,9 +660,7 @@ static void can_receive(struct sk_buff *
atomic_long_inc(&pkg_stats->rx_frames);
atomic_long_inc(&pkg_stats->rx_frames_delta);
- /* create non-zero unique skb identifier together with *skb */
- while (!(can_skb_prv(skb)->skbcnt))
- can_skb_prv(skb)->skbcnt = atomic_inc_return(&skbcounter);
+ can_set_skb_uid(skb);
rcu_read_lock();
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -350,7 +350,6 @@ static void bcm_can_tx(struct bcm_op *op
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = dev->ifindex;
- can_skb_prv(skb)->skbcnt = 0;
skb_put_data(skb, cf, op->cfsiz);
@@ -1624,7 +1623,6 @@ static int bcm_tx_send(struct msghdr *ms
}
can_skb_prv(skb)->ifindex = dev->ifindex;
- can_skb_prv(skb)->skbcnt = 0;
skb->dev = dev;
can_skb_set_owner(skb, sk);
err = can_send(skb, 1); /* send with loopback */
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -232,7 +232,6 @@ static int isotp_send_fc(struct sock *sk
can_skb_reserve(nskb);
can_skb_prv(nskb)->ifindex = dev->ifindex;
- can_skb_prv(nskb)->skbcnt = 0;
nskb->dev = dev;
can_skb_set_owner(nskb, sk);
@@ -798,7 +797,6 @@ static void isotp_send_cframe(struct iso
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = dev->ifindex;
- can_skb_prv(skb)->skbcnt = 0;
cf = (struct canfd_frame *)skb->data;
skb_put_zero(skb, so->ll.mtu);
@@ -1104,7 +1102,6 @@ static int isotp_sendmsg(struct socket *
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = dev->ifindex;
- can_skb_prv(skb)->skbcnt = 0;
so->tx.len = size;
so->tx.idx = 0;
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -889,7 +889,6 @@ static struct sk_buff *j1939_sk_alloc_sk
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = ndev->ifindex;
- can_skb_prv(skb)->skbcnt = 0;
skb_reserve(skb, offsetof(struct can_frame, data));
ret = memcpy_from_msg(skb_put(skb, size), msg, size);
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -613,7 +613,6 @@ sk_buff *j1939_tp_tx_dat_new(struct j193
skb->dev = priv->ndev;
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = priv->ndev->ifindex;
- can_skb_prv(skb)->skbcnt = 0;
/* reserve CAN header */
skb_reserve(skb, offsetof(struct can_frame, data));
@@ -1553,7 +1552,6 @@ j1939_session *j1939_session_fresh_new(s
skb->dev = priv->ndev;
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = priv->ndev->ifindex;
- can_skb_prv(skb)->skbcnt = 0;
skcb = j1939_skb_to_cb(skb);
memcpy(skcb, rel_skcb, sizeof(*skcb));
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -75,8 +75,8 @@ MODULE_ALIAS("can-proto-1");
*/
struct uniqframe {
- int skbcnt;
const struct sk_buff *skb;
+ u32 hash;
unsigned int join_rx_count;
};
@@ -163,7 +163,7 @@ static void raw_rcv(struct sk_buff *oskb
/* eliminate multiple filter matches for the same skb */
if (this_cpu_ptr(ro->uniq)->skb == oskb &&
- this_cpu_ptr(ro->uniq)->skbcnt == can_skb_prv(oskb)->skbcnt) {
+ this_cpu_ptr(ro->uniq)->hash == oskb->hash) {
if (!ro->join_filters)
return;
@@ -173,7 +173,7 @@ static void raw_rcv(struct sk_buff *oskb
return;
} else {
this_cpu_ptr(ro->uniq)->skb = oskb;
- this_cpu_ptr(ro->uniq)->skbcnt = can_skb_prv(oskb)->skbcnt;
+ this_cpu_ptr(ro->uniq)->hash = oskb->hash;
this_cpu_ptr(ro->uniq)->join_rx_count = 1;
/* drop first frame to check all enabled filters? */
if (ro->join_filters && ro->count > 1)
@@ -945,7 +945,6 @@ static int raw_sendmsg(struct socket *so
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = dev->ifindex;
- can_skb_prv(skb)->skbcnt = 0;
/* fill the skb before testing for valid CAN frames */
err = memcpy_from_msg(skb_put(skb, size), msg, size);
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 334/337] can: isotp: fix timer drain order, wakeup handling and tx_gen ordering
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (331 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 333/337] can: use skb hash instead of private variable in headroom Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 335/337] usb: typec: ucsi: Correct teardown ordering in ucsi_init() error path Greg Kroah-Hartman
` (10 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Oliver Hartkopp, stable,
Marc Kleine-Budde
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Oliver Hartkopp <socketcan@hartkopp.net>
commit 050f010f920da17c1044a4f174766ad553e770b6 upstream.
This patch is a follow-up to commit cf070fe33bfb ("can: isotp: serialize
TX state transitions under so->rx_lock") which addresses following
sashiko-bot findings:
- isotp_sendmsg(): drain so->txfrtimer first so a stale callback can't
re-arm echotimer after the claim
- isotp_release(): wake so->wait after forcing ISOTP_SHUTDOWN so a
sleeping sendmsg() claim isn't stranded
- isotp_sendmsg(): have both wait_event_interruptible() calls in
isotp_sendmsg() also wake on ISOTP_SHUTDOWN and do not return claim to
IDLE to avoid corrupting a concurrent isotp_release() process.
- isotp_sendmsg(): handle potential claim of a new transfer when
the wait_event_interruptible() call returns in CAN_ISOTP_WAIT_TX_DONE
mode. Don't touch timers and states of the new transfer if a new thread
incremented so->tx_gen before getting the lock at err_event_drop.
- isotp_sendmsg(): handle a stuck can_send() and omit timer and state
changes if a new transfer was claimed. wait_tx_done() returns the error
recorded in so->tx_result[], tagged with the caller's own generation.
- isotp_tx_timeout(): on a claimed timeout, record the ECOMM error for
the timed-out transfer's own generation in so->tx_result[]; sk->sk_err
is raised unconditionally, same as every other error path here.
- isotp_tx_gen_done()/isotp_tx_timeout(): always read tx.state (acquire)
before tx_gen - the reverse order let a weakly ordered CPU pair a fresh
tx.state with a stale tx_gen/tx_result slot.
- isotp_sendmsg(): wait_tx_done: drain sk_err via sock_error() once we
have read the result from so->tx_result[], so an already-reported error
doesn't stay latched for a later poll()/SO_ERROR.
Also align the remaining lock-free so->tx.state/rx.state/cfecho accesses
and use skb->hash as unique loopback echo frame indicator.
Fixes: cf070fe33bfb ("can: isotp: serialize TX state transitions under so->rx_lock")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260724181525.43556-1-socketcan@hartkopp.net
Cc: stable@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/can/isotp.c | 317 ++++++++++++++++++++++++++++++++++++++++----------------
1 file changed, 230 insertions(+), 87 deletions(-)
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -126,6 +126,15 @@ MODULE_PARM_DESC(max_pdu_size, "maximum
#define ISOTP_FC_TIMEOUT 1 /* 1 sec */
#define ISOTP_ECHO_TIMEOUT 2 /* 2 secs */
+/* so->tx_result[so->tx_gen % ISOTP_TX_RESULT_SLOTS] holds the packed value
+ * (err << ISOTP_TX_RESULT_GEN_BITS | gen) for each tx generation slot, so it
+ * can be handled with a single READ_ONCE()/WRITE_ONCE() access.
+ */
+#define ISOTP_TX_RESULT_SLOTS 4
+#define ISOTP_TX_RESULT_GEN_BITS 24
+#define ISOTP_TX_RESULT_GEN_MASK ((1U << ISOTP_TX_RESULT_GEN_BITS) - 1)
+#define ISOTP_TX_RESULT_ERR_MASK 0xFF
+
enum {
ISOTP_IDLE = 0,
ISOTP_WAIT_FIRST_FC,
@@ -164,7 +173,8 @@ struct isotp_sock {
u32 force_tx_stmin;
u32 force_rx_stmin;
u32 cfecho; /* consecutive frame echo tag */
- u32 tx_gen; /* generation, bumped per new tx transfer */
+ u32 tx_gen; /* transfer generation, increased per new tx transfer */
+ u32 tx_result[ISOTP_TX_RESULT_SLOTS]; /* per-generation result slots */
struct tpcon rx, tx;
struct list_head notifier;
wait_queue_head_t wait;
@@ -175,6 +185,65 @@ static LIST_HEAD(isotp_notifier_list);
static DEFINE_SPINLOCK(isotp_notifier_lock);
static struct isotp_sock *isotp_busy_notifier;
+/* increase (24 bit) tx generation value */
+static u32 isotp_inc_tx_gen(u32 gen)
+{
+ return (gen + 1) & ISOTP_TX_RESULT_GEN_MASK;
+}
+
+/* store 8 bit error and 24 bit tx generation values in packed u32 element */
+static u32 isotp_pack_tx_result(u32 gen, int err)
+{
+ return gen | ((u32)err << ISOTP_TX_RESULT_GEN_BITS);
+}
+
+/* get the 24 bit tx generation value from the tx result */
+static u32 isotp_get_tx_gen(u32 gen_err)
+{
+ return gen_err & ISOTP_TX_RESULT_GEN_MASK;
+}
+
+/* get the 8 bit error value from the tx result */
+static u32 isotp_get_tx_err(u32 gen_err)
+{
+ return (gen_err >> ISOTP_TX_RESULT_GEN_BITS) & ISOTP_TX_RESULT_ERR_MASK;
+}
+
+/* store transfer result in per-generation%4 so->tx_result[] slot */
+static void isotp_set_tx_result(struct isotp_sock *so, u32 gen, int err)
+{
+ WRITE_ONCE(so->tx_result[gen % ISOTP_TX_RESULT_SLOTS],
+ isotp_pack_tx_result(gen, err));
+}
+
+/* fetch the result recorded for 'gen', as a (negative) errno (0 for success) */
+static int isotp_get_tx_result(struct isotp_sock *so, u32 gen)
+{
+ u32 result = READ_ONCE(so->tx_result[gen % ISOTP_TX_RESULT_SLOTS]);
+
+ if (isotp_get_tx_gen(result) != gen) {
+ pr_notice_once("can-isotp: tx_result[] slot reused before read\n");
+
+ /* report failure rather than risk a false success */
+ return -ECOMM;
+ }
+
+ return -(isotp_get_tx_err(result));
+}
+
+/* true if done, shut down or superseded ('gen' is no longer the active
+ * transfer). Reads tx.state first (acquire) so tx_gen/tx_result reads
+ * below see at least what that state write published (common sequence).
+ */
+static bool isotp_tx_gen_done(struct isotp_sock *so, u32 gen)
+{
+ /* read tx.state first for the common sequence */
+ u32 state = smp_load_acquire(&so->tx.state);
+
+ return state == ISOTP_IDLE || state == ISOTP_SHUTDOWN ||
+ READ_ONCE(so->tx_gen) != gen;
+}
+
static inline struct isotp_sock *isotp_sk(const struct sock *sk)
{
return (struct isotp_sock *)sk;
@@ -197,7 +266,7 @@ static enum hrtimer_restart isotp_rx_tim
rxtimer);
struct sock *sk = &so->sk;
- if (so->rx.state == ISOTP_WAIT_DATA) {
+ if (READ_ONCE(so->rx.state) == ISOTP_WAIT_DATA) {
/* we did not get new data frames in time */
/* report 'connection timed out' */
@@ -206,7 +275,7 @@ static enum hrtimer_restart isotp_rx_tim
sk_error_report(sk);
/* reset rx state */
- so->rx.state = ISOTP_IDLE;
+ WRITE_ONCE(so->rx.state, ISOTP_IDLE);
}
return HRTIMER_NORESTART;
@@ -363,20 +432,19 @@ static void isotp_send_cframe(struct iso
static int isotp_rcv_fc(struct isotp_sock *so, struct canfd_frame *cf, int ae)
{
struct sock *sk = &so->sk;
+ int tx_err = EBADMSG; /* default for unknown FC status */
- if (so->tx.state != ISOTP_WAIT_FC &&
- so->tx.state != ISOTP_WAIT_FIRST_FC)
+ if (READ_ONCE(so->tx.state) != ISOTP_WAIT_FC &&
+ READ_ONCE(so->tx.state) != ISOTP_WAIT_FIRST_FC)
return 0;
hrtimer_cancel(&so->txtimer);
/* isotp_tx_timeout() may have given up on this job while
- * hrtimer_cancel() above waited for it to finish; so->rx_lock
- * (held by our caller isotp_rcv()) rules out a concurrent claim,
- * so a plain recheck is enough here.
+ * hrtimer_cancel() above waited for it to finish => recheck
*/
- if (so->tx.state != ISOTP_WAIT_FC &&
- so->tx.state != ISOTP_WAIT_FIRST_FC)
+ if (READ_ONCE(so->tx.state) != ISOTP_WAIT_FC &&
+ READ_ONCE(so->tx.state) != ISOTP_WAIT_FIRST_FC)
return 1;
if ((cf->len < ae + FC_CONTENT_SZ) ||
@@ -387,13 +455,15 @@ static int isotp_rcv_fc(struct isotp_soc
if (!sock_flag(sk, SOCK_DEAD))
sk_error_report(sk);
- so->tx.state = ISOTP_IDLE;
+ isotp_set_tx_result(so, so->tx_gen, EBADMSG);
+ /* set to IDLE after publishing tx_result */
+ smp_store_release(&so->tx.state, ISOTP_IDLE);
wake_up_interruptible(&so->wait);
return 1;
}
/* get static/dynamic communication params from first/every FC frame */
- if (so->tx.state == ISOTP_WAIT_FIRST_FC ||
+ if (READ_ONCE(so->tx.state) == ISOTP_WAIT_FIRST_FC ||
so->opt.flags & CAN_ISOTP_DYN_FC_PARMS) {
so->txfc.bs = cf->data[ae + 1];
so->txfc.stmin = cf->data[ae + 2];
@@ -417,13 +487,13 @@ static int isotp_rcv_fc(struct isotp_soc
so->tx_gap = ktime_add_ns(so->tx_gap,
(so->txfc.stmin - 0xF0)
* 100000);
- so->tx.state = ISOTP_WAIT_FC;
+ WRITE_ONCE(so->tx.state, ISOTP_WAIT_FC);
}
switch (cf->data[ae] & 0x0F) {
case ISOTP_FC_CTS:
so->tx.bs = 0;
- so->tx.state = ISOTP_SENDING;
+ WRITE_ONCE(so->tx.state, ISOTP_SENDING);
/* send CF frame and enable echo timeout handling */
hrtimer_start(&so->echotimer, ktime_set(ISOTP_ECHO_TIMEOUT, 0),
HRTIMER_MODE_REL_SOFT);
@@ -438,14 +508,19 @@ static int isotp_rcv_fc(struct isotp_soc
case ISOTP_FC_OVFLW:
/* overflow on receiver side - report 'message too long' */
- sk->sk_err = EMSGSIZE;
- if (!sock_flag(sk, SOCK_DEAD))
- sk_error_report(sk);
+ tx_err = EMSGSIZE;
fallthrough;
default:
- /* stop this tx job */
- so->tx.state = ISOTP_IDLE;
+ /* reserved/unknown flow status (tx_err defaults to EBADMSG) */
+
+ sk->sk_err = tx_err;
+ if (!sock_flag(sk, SOCK_DEAD))
+ sk_error_report(sk);
+
+ isotp_set_tx_result(so, so->tx_gen, tx_err);
+ /* set to IDLE after publishing tx_result */
+ smp_store_release(&so->tx.state, ISOTP_IDLE);
wake_up_interruptible(&so->wait);
}
return 0;
@@ -458,7 +533,7 @@ static int isotp_rcv_sf(struct sock *sk,
struct sk_buff *nskb;
hrtimer_cancel(&so->rxtimer);
- so->rx.state = ISOTP_IDLE;
+ WRITE_ONCE(so->rx.state, ISOTP_IDLE);
if (!len || len > cf->len - pcilen)
return 1;
@@ -492,7 +567,7 @@ static int isotp_rcv_ff(struct sock *sk,
int ff_pci_sz;
hrtimer_cancel(&so->rxtimer);
- so->rx.state = ISOTP_IDLE;
+ WRITE_ONCE(so->rx.state, ISOTP_IDLE);
/* get the used sender LL_DL from the (first) CAN frame data length */
so->rx.ll_dl = padlen(cf->len);
@@ -546,7 +621,7 @@ static int isotp_rcv_ff(struct sock *sk,
/* initial setup for this pdu reception */
so->rx.sn = 1;
- so->rx.state = ISOTP_WAIT_DATA;
+ WRITE_ONCE(so->rx.state, ISOTP_WAIT_DATA);
/* no creation of flow control frames */
if (so->opt.flags & CAN_ISOTP_LISTEN_MODE)
@@ -564,7 +639,7 @@ static int isotp_rcv_cf(struct sock *sk,
struct sk_buff *nskb;
int i;
- if (so->rx.state != ISOTP_WAIT_DATA)
+ if (READ_ONCE(so->rx.state) != ISOTP_WAIT_DATA)
return 0;
/* drop if timestamp gap is less than force_rx_stmin nano secs */
@@ -579,11 +654,9 @@ static int isotp_rcv_cf(struct sock *sk,
hrtimer_cancel(&so->rxtimer);
/* isotp_rx_timer_handler() may have raced us for so->rx.state
- * while hrtimer_cancel() above waited for it to finish, already
- * reporting ETIMEDOUT and resetting the reception; don't process
- * this CF into a reassembly that has already been given up on.
+ * while hrtimer_cancel() above waited for it to finish => recheck
*/
- if (so->rx.state != ISOTP_WAIT_DATA)
+ if (READ_ONCE(so->rx.state) != ISOTP_WAIT_DATA)
return 1;
/* CFs are never longer than the FF */
@@ -604,7 +677,7 @@ static int isotp_rcv_cf(struct sock *sk,
sk_error_report(sk);
/* reset rx state */
- so->rx.state = ISOTP_IDLE;
+ WRITE_ONCE(so->rx.state, ISOTP_IDLE);
return 1;
}
so->rx.sn++;
@@ -618,7 +691,7 @@ static int isotp_rcv_cf(struct sock *sk,
if (so->rx.idx >= so->rx.len) {
/* we are done */
- so->rx.state = ISOTP_IDLE;
+ WRITE_ONCE(so->rx.state, ISOTP_IDLE);
if ((so->opt.flags & ISOTP_CHECK_PADDING) &&
check_pad(so, cf, i + 1, so->opt.rxpad_content)) {
@@ -689,8 +762,10 @@ static void isotp_rcv(struct sk_buff *sk
if (so->opt.flags & CAN_ISOTP_HALF_DUPLEX) {
/* check rx/tx path half duplex expectations */
- if ((so->tx.state != ISOTP_IDLE && n_pci_type != N_PCI_FC) ||
- (so->rx.state != ISOTP_IDLE && n_pci_type == N_PCI_FC))
+ if ((READ_ONCE(so->tx.state) != ISOTP_IDLE &&
+ n_pci_type != N_PCI_FC) ||
+ (READ_ONCE(so->rx.state) != ISOTP_IDLE &&
+ n_pci_type == N_PCI_FC))
goto out_unlock;
}
@@ -784,6 +859,7 @@ static void isotp_send_cframe(struct iso
struct canfd_frame *cf;
int can_send_ret;
int ae = (so->opt.flags & CAN_ISOTP_EXTEND_ADDR) ? 1 : 0;
+ u32 old_cfecho;
dev = dev_get_by_index(sock_net(sk), so->ifindex);
if (!dev)
@@ -798,6 +874,9 @@ static void isotp_send_cframe(struct iso
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = dev->ifindex;
+ /* set uid in tx skb to identify CF echo frames */
+ can_set_skb_uid(skb);
+
cf = (struct canfd_frame *)skb->data;
skb_put_zero(skb, so->ll.mtu);
@@ -814,12 +893,15 @@ static void isotp_send_cframe(struct iso
skb->dev = dev;
can_skb_set_owner(skb, sk);
- /* cfecho should have been zero'ed by init/isotp_rcv_echo() */
- if (so->cfecho)
- pr_notice_once("can-isotp: cfecho is %08X != 0\n", so->cfecho);
+ /* zero'ed by init/isotp_rcv_echo(); reached lock-free via
+ * isotp_txfr_timer_handler() too, so use READ_ONCE()/WRITE_ONCE()
+ */
+ old_cfecho = READ_ONCE(so->cfecho);
+ if (old_cfecho)
+ pr_notice_once("can-isotp: cfecho is %08X != 0\n", old_cfecho);
/* set consecutive frame echo tag */
- so->cfecho = *(u32 *)cf->data;
+ WRITE_ONCE(so->cfecho, skb->hash);
/* send frame with local echo enabled */
can_send_ret = can_send(skb, 1);
@@ -871,7 +953,6 @@ static void isotp_rcv_echo(struct sk_buf
{
struct sock *sk = (struct sock *)data;
struct isotp_sock *so = isotp_sk(sk);
- struct canfd_frame *cf = (struct canfd_frame *)skb->data;
/* only handle my own local echo CF/SF skb's (no FF!) */
if (skb->sk != sk)
@@ -883,32 +964,35 @@ static void isotp_rcv_echo(struct sk_buf
spin_lock(&so->rx_lock);
/* so->cfecho may since belong to a new transfer; recheck under lock */
- if (so->cfecho != *(u32 *)cf->data)
+ if (READ_ONCE(so->cfecho) != skb->hash)
goto out_unlock;
/* cancel local echo timeout */
hrtimer_cancel(&so->echotimer);
/* local echo skb with consecutive frame has been consumed */
- so->cfecho = 0;
+ WRITE_ONCE(so->cfecho, 0);
/* claiming a transfer also takes so->rx_lock, so a plain recheck
* is enough: so->tx.state can't have flipped to ISOTP_SENDING for
* a new claim while we're still in here
*/
- if (so->tx.state != ISOTP_SENDING)
+ if (READ_ONCE(so->tx.state) != ISOTP_SENDING)
goto out_unlock;
if (so->tx.idx >= so->tx.len) {
/* we are done */
- so->tx.state = ISOTP_IDLE;
+
+ isotp_set_tx_result(so, so->tx_gen, 0);
+ /* set to IDLE after publishing tx_result */
+ smp_store_release(&so->tx.state, ISOTP_IDLE);
wake_up_interruptible(&so->wait);
goto out_unlock;
}
if (so->txfc.bs && so->tx.bs >= so->txfc.bs) {
/* stop and wait for FC with timeout */
- so->tx.state = ISOTP_WAIT_FC;
+ WRITE_ONCE(so->tx.state, ISOTP_WAIT_FC);
hrtimer_start(&so->txtimer, ktime_set(ISOTP_FC_TIMEOUT, 0),
HRTIMER_MODE_REL_SOFT);
goto out_unlock;
@@ -930,16 +1014,20 @@ out_unlock:
spin_unlock(&so->rx_lock);
}
-/* shared by so->txtimer's and so->echotimer's callbacks. Both timers get
- * cancelled under so->rx_lock elsewhere, so this must stay lock-free to
- * avoid deadlocking with that; uses so->tx_gen instead to avoid tainting
- * a new transfer with an error from the one that just timed out.
+/* isotp_tx_timeout: we did not get any flow control or echo frame in time
+ *
+ * Shared by so->txtimer's and so->echotimer's callbacks. Both timers get
+ * cancelled under so->rx_lock elsewhere, so this must stay lock-free.
+ *
+ * tx.state is acquired before tx_gen. Common sequence in isotp_tx_gen_done().
+ * cmpxchg() only orders itself, not the two preceding loads.
*/
static enum hrtimer_restart isotp_tx_timeout(struct isotp_sock *so)
{
struct sock *sk = &so->sk;
+ /* read tx.state first for the common sequence */
+ u32 old_state = smp_load_acquire(&so->tx.state);
u32 gen = READ_ONCE(so->tx_gen);
- u32 old_state = READ_ONCE(so->tx.state);
/* don't handle timeouts in IDLE or SHUTDOWN state */
if (old_state == ISOTP_IDLE || old_state == ISOTP_SHUTDOWN)
@@ -949,14 +1037,14 @@ static enum hrtimer_restart isotp_tx_tim
if (cmpxchg(&so->tx.state, old_state, ISOTP_IDLE) != old_state)
return HRTIMER_NORESTART;
- /* we did not get any flow control or echo frame in time */
+ /* detected timeout: report 'communication error on send' */
- if (READ_ONCE(so->tx_gen) == gen) {
- /* report 'communication error on send' */
- sk->sk_err = ECOMM;
- if (!sock_flag(sk, SOCK_DEAD))
- sk_error_report(sk);
- }
+ /* a stale read of this slot by a waiter still falls back to ECOMM */
+ isotp_set_tx_result(so, gen, ECOMM);
+
+ sk->sk_err = ECOMM;
+ if (!sock_flag(sk, SOCK_DEAD))
+ sk_error_report(sk);
wake_up_interruptible(&so->wait);
@@ -991,7 +1079,7 @@ static enum hrtimer_restart isotp_txfr_t
HRTIMER_MODE_REL_SOFT);
/* cfecho should be consumed by isotp_rcv_echo() here */
- if (so->tx.state == ISOTP_SENDING && !so->cfecho)
+ if (READ_ONCE(so->tx.state) == ISOTP_SENDING && !READ_ONCE(so->cfecho))
isotp_send_cframe(so);
return HRTIMER_NORESTART;
@@ -1009,10 +1097,12 @@ static int isotp_sendmsg(struct socket *
s64 hrtimer_sec = ISOTP_ECHO_TIMEOUT;
struct hrtimer *tx_hrt = &so->echotimer;
u32 new_state = ISOTP_SENDING;
+ u32 my_gen;
+ u32 old_cfecho;
int off;
int err;
- if (!so->bound || so->tx.state == ISOTP_SHUTDOWN)
+ if (!so->bound || READ_ONCE(so->tx.state) == ISOTP_SHUTDOWN)
return -EADDRNOTAVAIL;
/* claim the socket under so->rx_lock: this serializes the claim
@@ -1029,29 +1119,33 @@ static int isotp_sendmsg(struct socket *
if (msg->msg_flags & MSG_DONTWAIT)
return -EAGAIN;
- if (so->tx.state == ISOTP_SHUTDOWN)
+ if (READ_ONCE(so->tx.state) == ISOTP_SHUTDOWN)
return -EADDRNOTAVAIL;
/* wait for complete transmission of current pdu */
err = wait_event_interruptible(so->wait,
- so->tx.state == ISOTP_IDLE);
+ READ_ONCE(so->tx.state) == ISOTP_IDLE ||
+ READ_ONCE(so->tx.state) == ISOTP_SHUTDOWN);
if (err)
return err;
}
- /* new transfer: bump so->tx_gen and drain the old one's timers,
- * still under the so->rx_lock we just claimed the socket with
- */
- WRITE_ONCE(so->tx.state, ISOTP_SENDING);
- WRITE_ONCE(so->tx_gen, READ_ONCE(so->tx_gen) + 1);
+ /* txfrtimer's callback re-arms echotimer lock-free: drain it first */
+ hrtimer_cancel(&so->txfrtimer);
hrtimer_cancel(&so->txtimer);
hrtimer_cancel(&so->echotimer);
- hrtimer_cancel(&so->txfrtimer);
- so->cfecho = 0;
+
+ /* new transfer: increment so->tx_gen and set tx.state after barrier */
+ my_gen = isotp_inc_tx_gen(READ_ONCE(so->tx_gen));
+ isotp_set_tx_result(so, my_gen, ECOMM); /* prevent stale slot matching */
+ WRITE_ONCE(so->tx_gen, my_gen);
+ smp_wmb(); /* see smp_load_acquire() in isotp_tx_[timeout|gen_done] */
+ WRITE_ONCE(so->tx.state, ISOTP_SENDING);
+ WRITE_ONCE(so->cfecho, 0);
spin_unlock_bh(&so->rx_lock);
/* so->bound is only checked once above - a wakeup may have
- * unbound/rebound the socket meanwhile, so re-validate it
+ * unbound/rebound the socket meanwhile => recheck
*/
if (!so->bound) {
err = -EADDRNOTAVAIL;
@@ -1103,6 +1197,9 @@ static int isotp_sendmsg(struct socket *
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = dev->ifindex;
+ /* set uid in tx skb to identify CF echo frames */
+ can_set_skb_uid(skb);
+
so->tx.len = size;
so->tx.idx = 0;
@@ -1110,8 +1207,9 @@ static int isotp_sendmsg(struct socket *
skb_put_zero(skb, so->ll.mtu);
/* cfecho should have been zero'ed by init / former isotp_rcv_echo() */
- if (so->cfecho)
- pr_notice_once("can-isotp: uninit cfecho %08X\n", so->cfecho);
+ old_cfecho = READ_ONCE(so->cfecho);
+ if (old_cfecho)
+ pr_notice_once("can-isotp: uninit cfecho %08X\n", old_cfecho);
/* check for single frame transmission depending on TX_DL */
if (size <= so->tx.ll_dl - SF_PCI_SZ4 - ae - off) {
@@ -1139,7 +1237,7 @@ static int isotp_sendmsg(struct socket *
cf->data[ae] |= size;
/* set CF echo tag for isotp_rcv_echo() (SF-mode) */
- so->cfecho = *(u32 *)cf->data;
+ WRITE_ONCE(so->cfecho, skb->hash);
} else {
/* send first frame */
@@ -1156,7 +1254,7 @@ static int isotp_sendmsg(struct socket *
so->txfc.bs = 0;
/* set CF echo tag for isotp_rcv_echo() (CF-mode) */
- so->cfecho = *(u32 *)cf->data;
+ WRITE_ONCE(so->cfecho, skb->hash);
} else {
/* standard flow control check */
new_state = ISOTP_WAIT_FIRST_FC;
@@ -1166,12 +1264,12 @@ static int isotp_sendmsg(struct socket *
tx_hrt = &so->txtimer;
/* no CF echo tag for isotp_rcv_echo() (FF-mode) */
- so->cfecho = 0;
+ WRITE_ONCE(so->cfecho, 0);
}
}
spin_lock_bh(&so->rx_lock);
- if (so->tx.state == ISOTP_SHUTDOWN) {
+ if (READ_ONCE(so->tx.state) == ISOTP_SHUTDOWN) {
/* isotp_release() has since taken over and already drained
* our timers - don't send into a socket that's going away
*/
@@ -1182,7 +1280,7 @@ static int isotp_sendmsg(struct socket *
return -EADDRNOTAVAIL;
}
/* WAIT_FIRST_FC for standard FF, else stays ISOTP_SENDING */
- so->tx.state = new_state;
+ WRITE_ONCE(so->tx.state, new_state);
hrtimer_start(tx_hrt, ktime_set(hrtimer_sec, 0),
HRTIMER_MODE_REL_SOFT);
spin_unlock_bh(&so->rx_lock);
@@ -1199,20 +1297,49 @@ static int isotp_sendmsg(struct socket *
__func__, ERR_PTR(err));
spin_lock_bh(&so->rx_lock);
+
+ /* new transfer already claimed by a concurrent completion,
+ * timeout or sendmsg() while we were stuck in can_send()?
+ */
+ if (READ_ONCE(so->tx_gen) != my_gen) {
+ /* don't touch timers and state of the new transfer */
+ spin_unlock_bh(&so->rx_lock);
+ return err;
+ }
+
/* no transmission -> no timeout monitoring */
hrtimer_cancel(tx_hrt);
goto err_out_drop_locked;
}
if (wait_tx_done) {
- /* wait for complete transmission of current pdu */
- err = wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE);
+ /* wake up for:
+ * - concurrent sendmsg() claiming a new transfer
+ * - complete transmission of current PDU
+ * - shutdown state change in isotp_release()
+ * isotp_tx_gen_done() uses common tx.state/tx_gen read sequence
+ */
+ err = wait_event_interruptible(so->wait,
+ isotp_tx_gen_done(so, my_gen));
if (err)
goto err_event_drop;
- err = sock_error(sk);
- if (err)
- return err;
+ /* still our claim, but isotp_release() force-shut it down */
+ if (smp_load_acquire(&so->tx.state) == ISOTP_SHUTDOWN &&
+ READ_ONCE(so->tx_gen) == my_gen) {
+ err = -EADDRNOTAVAIL;
+ goto err_event_drop;
+ }
+
+ /* own completion, or tx_gen moved on - either way this is
+ * what isotp_get_tx_result() recorded for my_gen
+ */
+ err = isotp_get_tx_result(so, my_gen);
+
+ /* drain to avoid stale error for a later poll()/SO_ERROR */
+ sock_error(sk);
+
+ return err ? err : size;
}
return size;
@@ -1222,15 +1349,26 @@ err_out_drop:
spin_lock_bh(&so->rx_lock);
goto err_out_drop_locked;
err_event_drop:
- /* interrupted waiting on our own transfer - drain its timers */
+ /* interrupted or shut down while waiting on our own transfer */
spin_lock_bh(&so->rx_lock);
+
+ /* new transfer already started by concurrent sendmsg()? */
+ if (READ_ONCE(so->tx_gen) != my_gen) {
+ /* don't touch timers and states of the new transfer */
+ spin_unlock_bh(&so->rx_lock);
+ return err;
+ }
+
hrtimer_cancel(&so->txfrtimer);
hrtimer_cancel(&so->txtimer);
hrtimer_cancel(&so->echotimer);
err_out_drop_locked:
/* release the claim; so->rx_lock still held from above */
- so->cfecho = 0;
- so->tx.state = ISOTP_IDLE;
+ WRITE_ONCE(so->cfecho, 0);
+
+ /* only claim to IDLE if isotp_release() has not taken over */
+ if (READ_ONCE(so->tx.state) != ISOTP_SHUTDOWN)
+ WRITE_ONCE(so->tx.state, ISOTP_IDLE);
spin_unlock_bh(&so->rx_lock);
wake_up_interruptible(&so->wait);
@@ -1296,8 +1434,9 @@ static int isotp_release(struct socket *
/* best-effort: wait for a running pdu to finish, but don't block on
* it forever - give up after the first signal
*/
- while (so->tx.state != ISOTP_IDLE &&
- wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE) == 0)
+ while (READ_ONCE(so->tx.state) != ISOTP_IDLE &&
+ wait_event_interruptible(so->wait,
+ READ_ONCE(so->tx.state) == ISOTP_IDLE) == 0)
;
/* claim the socket under so->rx_lock like sendmsg() does, so its
@@ -1305,9 +1444,12 @@ static int isotp_release(struct socket *
* unconditionally, even when a signal cut the wait above short
*/
spin_lock_bh(&so->rx_lock);
- so->tx.state = ISOTP_SHUTDOWN;
+ WRITE_ONCE(so->tx.state, ISOTP_SHUTDOWN);
spin_unlock_bh(&so->rx_lock);
- so->rx.state = ISOTP_IDLE;
+ WRITE_ONCE(so->rx.state, ISOTP_IDLE);
+
+ /* forced SHUTDOWN may have skipped IDLE (gave up on a signal) */
+ wake_up_interruptible(&so->wait);
spin_lock(&isotp_notifier_lock);
while (isotp_busy_notifier == so) {
@@ -1422,7 +1564,8 @@ static int isotp_bind(struct socket *soc
* with so->bound in the same lock_sock() section above, so there is
* no window in which a concurrent isotp_notify() could be missed.
*/
- if (so->tx.state != ISOTP_IDLE || so->rx.state != ISOTP_IDLE) {
+ if (READ_ONCE(so->tx.state) != ISOTP_IDLE ||
+ READ_ONCE(so->rx.state) != ISOTP_IDLE) {
err = -EAGAIN;
goto out;
}
@@ -1456,7 +1599,7 @@ static int isotp_bind(struct socket *soc
isotp_rcv, sk, "isotp", sk);
/* no consecutive frame echo skb in flight */
- so->cfecho = 0;
+ WRITE_ONCE(so->cfecho, 0);
/* register for echo skb's */
can_rx_register(net, dev, tx_id, SINGLE_MASK(tx_id),
@@ -1822,7 +1965,7 @@ static __poll_t isotp_poll(struct file *
poll_wait(file, &so->wait, wait);
/* Check for false positives due to TX state */
- if ((mask & EPOLLWRNORM) && (so->tx.state != ISOTP_IDLE))
+ if ((mask & EPOLLWRNORM) && (READ_ONCE(so->tx.state) != ISOTP_IDLE))
mask &= ~(EPOLLOUT | EPOLLWRNORM);
return mask;
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 335/337] usb: typec: ucsi: Correct teardown ordering in ucsi_init() error path
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (332 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 334/337] can: isotp: fix timer drain order, wakeup handling and tx_gen ordering Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 336/337] drm/fb-helper: Fix a locking bug in an " Greg Kroah-Hartman
` (9 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Borah, Chaitanya Kumar,
Andrei Kuchynski, Heikki Krogerus
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Andrei Kuchynski <akuchynski@chromium.org>
commit fb0bf289f5d529336ef490c8273e88a8a8b29f69 upstream.
The commit 7aa7d4bf9d3f ("usb: typec: ucsi: Fix race condition and
ordering in port unregistration") consolidated port teardown into the
ucsi_unregister_port() helper. However, it introduced an ordering problem
in the ucsi_init() error path.
Fix this by ensuring ucsi_unregister_port() is called before we unregister
their corresponding lockdep keys.
Cc: stable@vger.kernel.org
Fixes: 7aa7d4bf9d3f ("usb: typec: ucsi: Fix race condition and ordering in port unregistration")
Reported-by: "Borah, Chaitanya Kumar" <chaitanya.kumar.borah@intel.com>
Closes: https://lore.kernel.org/all/22064276-6c56-411a-9f20-6917ceeb865f@intel.com/
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Tested-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260717104614.325250-1-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/typec/ucsi/ucsi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -1877,11 +1877,11 @@ static int ucsi_init(struct ucsi *ucsi)
return 0;
err_unregister:
+ for (con = connector; con->port; con++)
+ ucsi_unregister_port(con);
for (i = 0; i < ucsi->cap.num_connectors; i++)
lockdep_unregister_key(&connector[i].lock_key);
- for (con = connector; con->port; con++)
- ucsi_unregister_port(con);
kfree(connector);
err_reset:
memset(&ucsi->cap, 0, sizeof(ucsi->cap));
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 336/337] drm/fb-helper: Fix a locking bug in an error path
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (333 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 335/337] usb: typec: ucsi: Correct teardown ordering in ucsi_init() error path Greg Kroah-Hartman
@ 2026-08-07 14:38 ` Greg Kroah-Hartman
2026-08-07 14:39 ` [PATCH 6.12 337/337] drm/tegra: fbdev: Do not assign to struct drm_fb_helper.info Greg Kroah-Hartman
` (8 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann,
Javier Martinez Canillas, Bart Van Assche, Christian König,
Dmitry Baryshkov
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bart Van Assche <bvanassche@acm.org>
commit bd64240dc88caaf7b96dd869f36f165f51b52039 upstream.
The name of the function __drm_fb_helper_initial_config_and_unlock() and
also the comment above that function make it clear that all code paths
in this function should unlock fb_helper->lock before returning. Add a
mutex_unlock() call in the only code path where it is missing. This has
been detected by the Clang thread-safety analyzer.
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Christian König <christian.koenig@amd.com> # radeon
Cc: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> # msm
Cc: Javier Martinez Canillas <javierm@redhat.com>
Fixes: 63c971af4036 ("drm/fb-helper: Allocate and release fb_info in single place")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260403205355.1181984-1-bvanassche@acm.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/drm_fb_helper.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -1782,8 +1782,10 @@ __drm_fb_helper_initial_config_and_unloc
drm_client_modeset_probe(&fb_helper->client, width, height);
info = drm_fb_helper_alloc_info(fb_helper);
- if (IS_ERR(info))
+ if (IS_ERR(info)) {
+ mutex_unlock(&fb_helper->lock);
return PTR_ERR(info);
+ }
ret = drm_fb_helper_single_fb_probe(fb_helper);
if (ret < 0) {
^ permalink raw reply [flat|nested] 353+ messages in thread
* [PATCH 6.12 337/337] drm/tegra: fbdev: Do not assign to struct drm_fb_helper.info
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (334 preceding siblings ...)
2026-08-07 14:38 ` [PATCH 6.12 336/337] drm/fb-helper: Fix a locking bug in an " Greg Kroah-Hartman
@ 2026-08-07 14:39 ` Greg Kroah-Hartman
2026-08-07 18:32 ` [PATCH 6.12 000/337] 6.12.103-rc1 review Pavel Machek
` (7 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Greg Kroah-Hartman @ 2026-08-07 14:39 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Thomas Zimmermann, linux-tegra,
Thierry Reding
6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Zimmermann <tzimmermann@suse.de>
commit d23bd83f3e47a928e783c0d6a004737519dc77dc upstream.
That field already contains the value being assigned. No need to do
this twice.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 63c971af4036 ("drm/fb-helper: Allocate and release fb_info in single place")
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patch.msgid.link/20260421073646.144712-2-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/tegra/fbdev.c | 1 -
1 file changed, 1 deletion(-)
--- a/drivers/gpu/drm/tegra/fbdev.c
+++ b/drivers/gpu/drm/tegra/fbdev.c
@@ -105,7 +105,6 @@ static int tegra_fbdev_probe(struct drm_
}
helper->fb = fb;
- helper->info = info;
info->fbops = &tegra_fb_ops;
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 289/337] mm/slab: prevent unbounded recursion in free path with new kmalloc type
2026-08-07 14:38 ` [PATCH 6.12 289/337] mm/slab: prevent unbounded recursion in free path with new kmalloc type Greg Kroah-Hartman
@ 2026-08-07 18:02 ` Nathan Chancellor
2026-08-08 11:10 ` Sasha Levin
0 siblings, 1 reply; 353+ messages in thread
From: Nathan Chancellor @ 2026-08-07 18:02 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: stable, patches, Danielle Costantino, Shakeel Butt,
Harry Yoo (Oracle), Suren Baghdasaryan, Vlastimil Babka (SUSE),
Sasha Levin
On Fri, Aug 07, 2026 at 04:38:12PM +0200, Greg Kroah-Hartman wrote:
...
> - Mark need_kmalloc_no_objext() __always_inline to make sure
> the compiler does not generate a out-of-line function that could
> access mem_profiling_support (which is marked __init)
...
> diff --git a/mm/slab.h b/mm/slab.h
> index b65d2462b3fdb..34a3d65b4ef5f 100644
> --- a/mm/slab.h
> +++ b/mm/slab.h
> @@ -557,6 +562,25 @@ bool slab_in_kunit_test(void);
> static inline bool slab_in_kunit_test(void) { return false; }
> #endif
>
> +/*
> + * Return true if KMALLOC_NORMAL caches may need obj_exts arrays.
> + *
> + * Memory allocation profiling requires obj_exts for all caches.
> + * Memcg usually doesn't need them for normal kmalloc caches, but kmalloc types
> + * with a priority higher than KMALLOC_CGROUP can be aliased with KMALLOC_NORMAL.
> + */
> +static __always_inline inline bool need_kmalloc_no_objext(void)
This adjustment causes a clang warning (or error with CONFIG_WERROR):
In file included from linux/mm/mempool.c:21:
linux/mm/slab.h:572:24: error: duplicate 'inline' declaration specifier [-Werror,-Wduplicate-decl-specifier]
572 | static __always_inline inline bool need_kmalloc_no_objext(void)
| ^
linux/include/linux/compiler_types.h:249:16: note: expanded from macro 'inline'
249 | #define inline inline __gnu_inline __inline_maybe_unused notrace
| ^
As originally reported by KernelCI at
https://lore.kernel.org/178611474407.7658.14431237412617748501@kernelci.org/
The 'inline' should be dropped, as '__always_inline' includes 'inline'
already.
--
Cheers,
Nathan
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 000/337] 6.12.103-rc1 review
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (335 preceding siblings ...)
2026-08-07 14:39 ` [PATCH 6.12 337/337] drm/tegra: fbdev: Do not assign to struct drm_fb_helper.info Greg Kroah-Hartman
@ 2026-08-07 18:32 ` Pavel Machek
2026-08-08 0:34 ` Shuah Khan
` (6 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Pavel Machek @ 2026-08-07 18:32 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: stable, patches, linux-kernel, torvalds, akpm, linux, shuah,
patches, lkft-triage, pavel, jonathanh, f.fainelli,
sudipm.mukherjee, rwarsow, conor, hargar, broonie, achill, sr,
Ilya Maximets, Pablo Neira Ayuso, Sasha Levin
[-- Attachment #1: Type: text/plain, Size: 543 bytes --]
Hi!
> This is the start of the stable review cycle for the 6.12.103 release.
> There are 337 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
CIP testing did not find any problems here:
https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/tree/linux-6.12.y
Tested-by: Pavel Machek (CIP) <pavel@nabladev.com>
Best regards,
Pavel
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 000/337] 6.12.103-rc1 review
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (336 preceding siblings ...)
2026-08-07 18:32 ` [PATCH 6.12 000/337] 6.12.103-rc1 review Pavel Machek
@ 2026-08-08 0:34 ` Shuah Khan
2026-08-08 2:36 ` Peter Schneider
` (5 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Shuah Khan @ 2026-08-08 0:34 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: patches, linux-kernel, torvalds, akpm, linux, shuah, patches,
lkft-triage, pavel, jonathanh, f.fainelli, sudipm.mukherjee,
rwarsow, conor, hargar, broonie, achill, sr, Ilya Maximets,
Pablo Neira Ayuso, Sasha Levin, Shuah Khan
On 8/7/26 08:33, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.12.103 release.
> There are 337 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sun, 09 Aug 2026 14:33:46 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.12.103-rc1.gz
> or in the git tree and branch at:
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.12.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
>
Compiled and booted on my test system. No dmesg regressions.
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
thanks,
-- Shuah
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 000/337] 6.12.103-rc1 review
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (337 preceding siblings ...)
2026-08-08 0:34 ` Shuah Khan
@ 2026-08-08 2:36 ` Peter Schneider
2026-08-08 10:22 ` Brett A C Sheffield
` (4 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Peter Schneider @ 2026-08-08 2:36 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: patches, linux-kernel, torvalds, akpm, linux, shuah, patches,
lkft-triage, pavel, jonathanh, f.fainelli, sudipm.mukherjee,
rwarsow, conor, hargar, broonie, achill, sr, Ilya Maximets,
Pablo Neira Ayuso, Sasha Levin
Am 07.08.2026 um 16:33 schrieb Greg Kroah-Hartman:
> This is the start of the stable review cycle for the 6.12.103 release.
> There are 337 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
Builds, boots and works on my 2-socket Ivy Bridge Xeon E5-2697 v2 server. No dmesg oddities or regressions found.
Tested-by: Peter Schneider <pschneider1968@googlemail.com>
Beste Grüße,
Peter Schneider
--
Climb the mountain not to plant your flag, but to embrace the challenge,
enjoy the air and behold the view. Climb it so you can see the world,
not so the world can see you. -- David McCullough Jr.
OpenPGP: 0xA3828BD796CCE11A8CADE8866E3A92C92C3FF244
Download: https://www.peters-netzplatz.de/download/pschneider1968_pub.asc
https://keys.mailvelope.com/pks/lookup?op=get&search=pschneider1968@googlemail.com
https://keys.mailvelope.com/pks/lookup?op=get&search=pschneider1968@gmail.com
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 000/337] 6.12.103-rc1 review
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (338 preceding siblings ...)
2026-08-08 2:36 ` Peter Schneider
@ 2026-08-08 10:22 ` Brett A C Sheffield
2026-08-08 20:39 ` Harshit Mogalapalli
` (3 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Brett A C Sheffield @ 2026-08-08 10:22 UTC (permalink / raw)
To: gregkh
Cc: stable, patches, linux-kernel, torvalds, akpm, linux, shuah,
patches, lkft-triage, pavel, jonathanh, f.fainelli,
sudipm.mukherjee, rwarsow, conor, hargar, broonie, achill, sr,
i.maximets, pablo, sashal, Brett A C Sheffield
# Librecast Test Results
020/020 [ OK ] liblcrq
010/010 [ OK ] libmld
120/120 [ OK ] liblibrecast
CPU/kernel: Linux auntie 6.12.103-rc1-g72d4b4c8c906 #1 SMP PREEMPT_DYNAMIC Sat Aug 8 10:10:11 -00 2026 x86_64 AMD Ryzen 9 9950X 16-Core Processor AuthenticAMD GNU/Linux
Tested-by: Brett A C Sheffield <bacs@librecast.net>
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 289/337] mm/slab: prevent unbounded recursion in free path with new kmalloc type
2026-08-07 18:02 ` Nathan Chancellor
@ 2026-08-08 11:10 ` Sasha Levin
0 siblings, 0 replies; 353+ messages in thread
From: Sasha Levin @ 2026-08-08 11:10 UTC (permalink / raw)
To: Greg Kroah-Hartman, Nathan Chancellor
Cc: Sasha Levin, stable, patches, Danielle Costantino, Shakeel Butt,
Harry Yoo (Oracle), Suren Baghdasaryan, Vlastimil Babka (SUSE),
bot, kernelci-results
On Fri, Aug 07, 2026 at 11:02:45AM -0700, Nathan Chancellor wrote:
> linux/mm/slab.h:572:24: error: duplicate 'inline' declaration specifier [-Werror,-Wduplicate-decl-specifier]
> 572 | static __always_inline inline bool need_kmalloc_no_objext(void)
>
> The 'inline' should be dropped, as '__always_inline' includes 'inline'
> already.
Fixed in the queue - I dropped the redundant 'inline' and kept
'__always_inline', so the 6.12 backport now reads:
static __always_inline bool need_kmalloc_no_objext(void)
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 106/337] Bluetooth: hci_sync: remove unnecessary hci_conn_get in create_conn_sync
2026-08-07 14:35 ` [PATCH 6.12 106/337] Bluetooth: hci_sync: remove unnecessary hci_conn_get in create_conn_sync Greg Kroah-Hartman
@ 2026-08-08 17:08 ` Harshit Mogalapalli
2026-08-09 15:08 ` Sasha Levin
0 siblings, 1 reply; 353+ messages in thread
From: Harshit Mogalapalli @ 2026-08-08 17:08 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: patches, Pauli Virtanen, Luiz Augusto von Dentz, Sasha Levin,
vegard.nossum
Hi Greg/Sasha
On 07/08/26 8:05 pm, Greg Kroah-Hartman wrote:
> 6.12-stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Pauli Virtanen <pav@iki.fi>
>
> [ Upstream commit c0a9dcd2be398eee505d4b254ec3a845aa8ab189 ]
>
> hci_conn_get() without already held reference is data race against
> concurrent deletion.
>
> In previous patches, the refcount has been changed to be taken before
> starting the hci_sync task, so remove these extra get() + put() as they
> are not needed.
>
I have run an AI assisted backport review and it spotted an issue; I
checked 6.12.y tree and the prerequisite change is missing.
Upstream first changed the callers to queue a held reference:
err = hci_cmd_sync_queue_once(hdev, hci_acl_create_conn_sync,
hci_conn_get(conn),
hci_acl_create_conn_sync_complete);
if (err)
hci_conn_put(conn);
The posted 6.12.y state still queues the raw pointer:
return hci_cmd_sync_queue_once(hdev, hci_acl_create_conn_sync, conn,
NULL);
This backport nevertheless removes the worker-side get/put pairs. That
leaves the queued work without a reference if connection deletion races
it. I think 6.12.y misses commit: 2f5d635ad5906 ("Bluetooth:
hci_sync: hold conn in hci_connect_acl/le_sync() callbacks"); I think we
have to either queue this prerequisite or drop this, thoughts ?
Also this is part of the series:
https://lore.kernel.org/all/178517880663.1372023.9123649060094265539.git-patchwork-notify@kernel.org/
thanks,
Harshit
> Fixes: 12917f591cea ("Bluetooth: hci_conn: Fix null ptr deref in hci_abort_conn()")
> Signed-off-by: Pauli Virtanen <pav@iki.fi>
> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
> net/bluetooth/hci_sync.c | 13 -------------
> 1 file changed, 13 deletions(-)
>
> diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
> index 8c48d459a5415..03bbf4c1d6e5a 100644
> --- a/net/bluetooth/hci_sync.c
> +++ b/net/bluetooth/hci_sync.c
> @@ -6577,11 +6577,6 @@ static int hci_le_create_conn_sync(struct hci_dev *hdev, void *data)
>
> bt_dev_dbg(hdev, "conn %p", conn);
>
> - /* Hold a reference so conn stays valid for the HCI_CONN_CREATE
> - * clear_bit() at done.
> - */
> - hci_conn_get(conn);
> -
> clear_bit(HCI_CONN_SCANNING, &conn->flags);
> conn->state = BT_CONNECT;
>
> @@ -6596,7 +6591,6 @@ static int hci_le_create_conn_sync(struct hci_dev *hdev, void *data)
> conn->state = BT_OPEN;
> hci_abort_conn_sync(hdev, conn,
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 117/337] tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions
2026-08-07 14:35 ` [PATCH 6.12 117/337] tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions Greg Kroah-Hartman
@ 2026-08-08 17:23 ` Harshit Mogalapalli
2026-08-08 22:22 ` Steven Rostedt
0 siblings, 1 reply; 353+ messages in thread
From: Harshit Mogalapalli @ 2026-08-08 17:23 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: patches, Masami Hiramatsu (Google), Steven Rostedt, Sasha Levin,
vegard.nossum
Hi Greg/Sasha,
On 07/08/26 8:05 pm, Greg Kroah-Hartman wrote:
> 6.12-stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
>
> [ Upstream commit 12b80cdbc54cf615b4717a4e8180063408091ea2 ]
>
> mmio_trace_rw() and mmio_trace_mapping() retrieve mmio_trace_array into
> tr and pass it to __trace_mmiotrace_rw() and __trace_mmiotrace_map().
> If these functions are invoked while mmio_trace_array is NULL (e.g. before
> initialization or after disabled), accessing tr->array_buffer.buffer will
> result in a NULL pointer dereference crash.
>
> Fix this by adding an explicit NULL check for tr at the beginning of
> __trace_mmiotrace_rw() and __trace_mmiotrace_map().
>
> Link: https://patch.msgid.link/178524300062.56416.8362487250709962380.stgit@devnote2
> Fixes: f984b51e0779 ("ftrace: add mmiotrace plugin")
> Assisted-by: Antigravity:gemini-3.6-flash
> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
> kernel/trace/trace_mmiotrace.c | 12 ++++++++++--
> 1 file changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
> index 6b964471265e1..251ed7051e409 100644
> --- a/kernel/trace/trace_mmiotrace.c
> +++ b/kernel/trace/trace_mmiotrace.c
> @@ -295,11 +295,15 @@ static void __trace_mmiotrace_rw(struct trace_array *tr,
> struct trace_array_cpu *data,
^^^ lets keep this in mind
> struct mmiotrace_rw *rw)
> {
> - struct trace_buffer *buffer = tr->array_buffer.buffer;
> + struct trace_buffer *buffer;
> struct ring_buffer_event *event;
> struct trace_mmiotrace_rw *entry;
> unsigned int trace_ctx;
>
> + if (!tr)
> + return;
> +
> + buffer = tr->array_buffer.buffer;
I ran an AI-assisted backport review and then checked the 6.12.y code. I
think this backport is missing a small prerequisite.
Upstream's wrappers pass tr directly to __trace_mmiotrace_rw() and
__trace_mmiotrace_map().Each function checks tr before dereferencing it:
if (!tr)
return;
buffer = tr->array_buffer.buffer;
The upstream fix follows commit: 6936298393d8 ("tracing/mmiotrace:
Remove reference to unused per CPU data pointer"), which removes the
unused data argument.
6.12.y does not have that commit, so both functions still have that
argument and their wrappers compute it first:
struct trace_array *tr = mmio_trace_array;
struct trace_array_cpu *data =
per_cpu_ptr(tr->array_buffer.data, smp_processor_id());
__trace_mmiotrace_rw(tr, data, rw);
Consequently, if mmio_trace_array is NULL, the dereference in
per_cpu_ptr(tr->array_buffer.data, ...) occurs before either function's
new NULL check.
I think 6.12.y needs commit: 6936298393d8 ("tracing/mmiotrace: Remove
reference to unused per CPU data pointer") before this fix.
Thoughts?
thanks,
Harshit
> trace_ctx = tracing_gen_ctx_flags(0);
> event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_RW,
> sizeof(*entry), trace_ctx);
> @@ -324,11 +328,15 @@ static void __trace_mmiotrace_map(struct trace_array *tr,
> struct trace_array_cpu *data,
> struct mmiotrace_map *map)
> {
> - struct trace_buffer *buffer = tr->array_buffer.buffer;
> + struct trace_buffer *buffer;
> struct ring_buffer_event *event;
> struct trace_mmiotrace_map *entry;
> unsigned int trace_ctx;
>
> + if (!tr)
> + return;
> +
> + buffer = tr->array_buffer.buffer;
> trace_ctx = tracing_gen_ctx_flags(0);
> event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_MAP,
> sizeof(*entry), trace_ctx);
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 129/337] pinctrl: microchip-sgpio: add missing select REGMAP_MMIO
2026-08-07 14:35 ` [PATCH 6.12 129/337] pinctrl: microchip-sgpio: add missing select REGMAP_MMIO Greg Kroah-Hartman
@ 2026-08-08 17:33 ` Harshit Mogalapalli
2026-08-09 15:08 ` Sasha Levin
0 siblings, 1 reply; 353+ messages in thread
From: Harshit Mogalapalli @ 2026-08-08 17:33 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: patches, Benjamin Boortz, Andy Shevchenko, Linus Walleij,
vegard.nossum
Hi Greg,
On 07/08/26 8:05 pm, Greg Kroah-Hartman wrote:
> 6.12-stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Benjamin Boortz <bennib@mailbox.org>
>
> commit 25cb6e9a13123d1039cdc75b446ac52e1ebdc26d upstream.
>
> The driver calls ocelot_regmap_from_resource() via <linux/mfd/ocelot.h>,
> which internally uses devm_regmap_init_mmio() and requires REGMAP_MMIO.
> The Kconfig entry does not select REGMAP_MMIO, causing a build failure
> when no other driver in the config happens to pull in REGMAP_MMIO:
>
> include/linux/mfd/ocelot.h:34:24: error: implicit declaration of function 'devm_regmap_init_mmio'
>
> Found by randconfig testing on arm64; tinyconfig reproducer below.
>
> Fixes: 2afbbab45c26 ("pinctrl: microchip-sgpio: update to support regmap")
> Cc: stable@vger.kernel.org
> Signed-off-by: Benjamin Boortz <bennib@mailbox.org>
> Reviewed-by: Andy Shevchenko <andy@kernel.org>
> Signed-off-by: Linus Walleij <linusw@kernel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
> drivers/pinctrl/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> --- a/drivers/pinctrl/Kconfig
> +++ b/drivers/pinctrl/Kconfig
> @@ -213,6 +213,7 @@ config PINCTRL_EQUILIBRIUM
> select GENERIC_PINCONF
> select GENERIC_PINCTRL_GROUPS
> select GENERIC_PINMUX_FUNCTIONS
> + select REGMAP_MMIO
I have run an AI assisted backport review and it spotted an issue; I
checked the Kconfig delta and the selector was added to the wrong symbol.
Upstream has:
config PINCTRL_MICROCHIP_SGPIO
...
select REGMAP_MMIO
The posted 6.12.y change instead leaves PINCTRL_MICROCHIP_SGPIO without
that line and adds it under PINCTRL_EQUILIBRIUM.
I suggest moving select REGMAP_MMIO to the PINCTRL_MICROCHIP_SGPIO.
Thanks,
Harshit
> help
> Equilibrium driver is a pinctrl and GPIO driver for Intel Lightning
> Mountain network processor SoC that supports both the GPIO and pin
>
>
>
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 000/337] 6.12.103-rc1 review
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (339 preceding siblings ...)
2026-08-08 10:22 ` Brett A C Sheffield
@ 2026-08-08 20:39 ` Harshit Mogalapalli
2026-08-08 22:52 ` Ron Economos
` (2 subsequent siblings)
343 siblings, 0 replies; 353+ messages in thread
From: Harshit Mogalapalli @ 2026-08-08 20:39 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: patches, linux-kernel, torvalds, akpm, linux, shuah, patches,
lkft-triage, pavel, jonathanh, f.fainelli, sudipm.mukherjee,
rwarsow, conor, hargar, broonie, achill, sr, Ilya Maximets,
Pablo Neira Ayuso, Sasha Levin
Hi Greg,
On 07/08/26 8:03 pm, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.12.103 release.
> There are 337 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sun, 09 Aug 2026 14:33:46 +0000.
> Anything received after that time might be too late.
No problems seen on x86_64 and aarch64 with our testing.
Tested-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Thanks,
Harshit
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 117/337] tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions
2026-08-08 17:23 ` Harshit Mogalapalli
@ 2026-08-08 22:22 ` Steven Rostedt
0 siblings, 0 replies; 353+ messages in thread
From: Steven Rostedt @ 2026-08-08 22:22 UTC (permalink / raw)
To: Harshit Mogalapalli
Cc: Greg Kroah-Hartman, stable, patches, Masami Hiramatsu (Google),
Sasha Levin, vegard.nossum
On Sat, 8 Aug 2026 22:53:31 +0530
Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> wrote:
> I ran an AI-assisted backport review and then checked the 6.12.y code. I
> think this backport is missing a small prerequisite.
>
> Upstream's wrappers pass tr directly to __trace_mmiotrace_rw() and
> __trace_mmiotrace_map().Each function checks tr before dereferencing it:
>
> if (!tr)
> return;
> buffer = tr->array_buffer.buffer;
>
>
> The upstream fix follows commit: 6936298393d8 ("tracing/mmiotrace:
> Remove reference to unused per CPU data pointer"), which removes the
> unused data argument.
>
> 6.12.y does not have that commit, so both functions still have that
> argument and their wrappers compute it first:
>
> struct trace_array *tr = mmio_trace_array;
> struct trace_array_cpu *data =
> per_cpu_ptr(tr->array_buffer.data, smp_processor_id());
> __trace_mmiotrace_rw(tr, data, rw);
>
>
> Consequently, if mmio_trace_array is NULL, the dereference in
> per_cpu_ptr(tr->array_buffer.data, ...) occurs before either function's
> new NULL check.
>
> I think 6.12.y needs commit: 6936298393d8 ("tracing/mmiotrace: Remove
> reference to unused per CPU data pointer") before this fix.
>
> Thoughts?
>
Yeah, it looks like the kernel could crash for the same reasons without
commit 6936298393d8.
Greg, care to backport that one too?
Thanks,
-- Steve
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 000/337] 6.12.103-rc1 review
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (340 preceding siblings ...)
2026-08-08 20:39 ` Harshit Mogalapalli
@ 2026-08-08 22:52 ` Ron Economos
2026-08-09 8:28 ` Miguel Ojeda
2026-08-09 11:55 ` Mark Brown
343 siblings, 0 replies; 353+ messages in thread
From: Ron Economos @ 2026-08-08 22:52 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: patches, linux-kernel, torvalds, akpm, linux, shuah, patches,
lkft-triage, pavel, jonathanh, f.fainelli, sudipm.mukherjee,
rwarsow, conor, hargar, broonie, achill, sr, Ilya Maximets,
Pablo Neira Ayuso, Sasha Levin
On 8/7/26 07:33, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.12.103 release.
> There are 337 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sun, 09 Aug 2026 14:33:46 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.12.103-rc1.gz
> or in the git tree and branch at:
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.12.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h
Built and booted successfully on RISC-V RV64 (HiFive Unmatched).
Tested-by: Ron Economos <re@w6rz.net>
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 000/337] 6.12.103-rc1 review
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (341 preceding siblings ...)
2026-08-08 22:52 ` Ron Economos
@ 2026-08-09 8:28 ` Miguel Ojeda
2026-08-09 11:55 ` Mark Brown
343 siblings, 0 replies; 353+ messages in thread
From: Miguel Ojeda @ 2026-08-09 8:28 UTC (permalink / raw)
To: gregkh
Cc: achill, akpm, broonie, conor, f.fainelli, hargar, i.maximets,
jonathanh, linux-kernel, linux, lkft-triage, pablo, patches,
patches, pavel, rwarsow, sashal, shuah, sr, stable,
sudipm.mukherjee, torvalds, Miguel Ojeda
On Fri, 07 Aug 2026 16:33:24 +0200 Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 6.12.103 release.
> There are 337 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sun, 09 Aug 2026 14:33:46 +0000.
> Anything received after that time might be too late.
Boot-tested under QEMU for Rust x86_64, arm64 and riscv64; built-tested
for loongarch64:
Tested-by: Miguel Ojeda <ojeda@kernel.org>
I also had the slub `inline` issue, which I see Sasha fixed already:
In file included from mm/slub.c:21:
mm/slab.h:572:24: warning: duplicate 'inline' declaration specifier [-Wduplicate-decl-specifier]
572 | static __always_inline inline bool need_kmalloc_no_objext(void)
| ^
././include/linux/compiler_types.h:249:16: note: expanded from macro 'inline'
249 | #define inline inline __gnu_inline __inline_maybe_unused notrace
| ^
Thanks!
Cheers,
Miguel
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 000/337] 6.12.103-rc1 review
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
` (342 preceding siblings ...)
2026-08-09 8:28 ` Miguel Ojeda
@ 2026-08-09 11:55 ` Mark Brown
343 siblings, 0 replies; 353+ messages in thread
From: Mark Brown @ 2026-08-09 11:55 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: stable, patches, linux-kernel, torvalds, akpm, linux, shuah,
patches, lkft-triage, pavel, jonathanh, f.fainelli,
sudipm.mukherjee, rwarsow, conor, hargar, achill, sr,
Ilya Maximets, Pablo Neira Ayuso, Sasha Levin
[-- Attachment #1: Type: text/plain, Size: 347 bytes --]
On Fri, Aug 07, 2026 at 04:33:24PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.12.103 release.
> There are 337 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
Tested-by: Mark Brown <broonie@kernel.org>
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 106/337] Bluetooth: hci_sync: remove unnecessary hci_conn_get in create_conn_sync
2026-08-08 17:08 ` Harshit Mogalapalli
@ 2026-08-09 15:08 ` Sasha Levin
0 siblings, 0 replies; 353+ messages in thread
From: Sasha Levin @ 2026-08-09 15:08 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: Sasha Levin, patches, Pauli Virtanen, Luiz Augusto von Dentz,
vegard.nossum, Harshit Mogalapalli
On Sat, Aug 08, 2026 at 10:38:00PM +0530, Harshit Mogalapalli wrote:
> This backport nevertheless removes the worker-side get/put pairs. That
> leaves the queued work without a reference if connection deletion races
> it. I think 6.12.y misses commit: 2f5d635ad5906 ("Bluetooth:
> hci_sync: hold conn in hci_connect_acl/le_sync() callbacks"); I think we
> have to either queue this prerequisite or drop this, thoughts ?
Good catch, thank you. The same problem is in 6.18.y and 6.6.y, not just
6.12.y. I've dropped it from the 6.18, 6.12 and 6.6 queues.
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 353+ messages in thread
* Re: [PATCH 6.12 129/337] pinctrl: microchip-sgpio: add missing select REGMAP_MMIO
2026-08-08 17:33 ` Harshit Mogalapalli
@ 2026-08-09 15:08 ` Sasha Levin
0 siblings, 0 replies; 353+ messages in thread
From: Sasha Levin @ 2026-08-09 15:08 UTC (permalink / raw)
To: Greg Kroah-Hartman, stable
Cc: Sasha Levin, patches, Benjamin Boortz, Andy Shevchenko,
Linus Walleij, vegard.nossum, Harshit Mogalapalli
On Sat, Aug 08, 2026 at 11:03:41PM +0530, Harshit Mogalapalli wrote:
> The posted 6.12.y change instead leaves PINCTRL_MICROCHIP_SGPIO without
> that line and adds it under PINCTRL_EQUILIBRIUM.
>
> I suggest moving select REGMAP_MMIO to the PINCTRL_MICROCHIP_SGPIO.
Confirmed, and thanks for catching it. The hunk fuzzed onto the wrong Kconfig
symbol.
It is not only 6.12: 6.18.y, 6.6.y and 6.1.y have the same misapply. 7.1.y is
correct.
I've regenerated the four queue files with the hunk anchored at the right
place. Thanks!
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 353+ messages in thread
end of thread, other threads:[~2026-08-09 15:08 UTC | newest]
Thread overview: 353+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-08-07 14:33 [PATCH 6.12 000/337] 6.12.103-rc1 review Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 002/337] um: Add os_set_pdeathsig helper function Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 003/337] um: Set parent death signal for winch thread/process Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 004/337] um: Use os_set_pdeathsig helper in " Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 005/337] um: Set parent-death signal for ubd io thread/process Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 006/337] um: Set parent-death signal for write_sigio thread/process Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 007/337] um: Set parent death signal for userspace process Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 008/337] kunit: tool: Terminate kernel under test on SIGINT Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 009/337] kunit: tool: skip stty when stdin is not a tty Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 010/337] um: Preserve errno within signal handler Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 011/337] netfilter: br_netfilter: Reallocate headroom if necessary in neigh_hh_bridge() Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 012/337] net: airoha: Fix register index for Tx-fwd counter configuration Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 013/337] net: mpls: initialize rtm_tos in mpls_getroute() Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 014/337] HID: logitech-dj: Standardise hid_report_enum variable nomenclature Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 015/337] HID: logitech-dj: Prevent REPORT_ID_DJ_SHORT related user initiated OOB write Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 016/337] HID: logitech-dj: fix wrong detection of bad DJ_SHORT output report Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 017/337] bpf: Reset register bounds before narrowing retval range in check_mem_access() Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 018/337] netconsole: avoid OOB reads, msg is not nul-terminated Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 019/337] thunderbolt: Prevent XDomain delayed work use-after-free on disconnect Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 020/337] pinctrl: qcom: Unconditionally mark gpio as wakeup enable Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 021/337] pinctrl: qcom: sc8280xp: Add missing wakeup entries for GPIO143/151 Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 022/337] dmaengine: sun6i-dma: Fix reclaim descriptors while terminating DMA Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 023/337] dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev_open() Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 024/337] gpio: sloppy-logic-analyzer: Fix memory leak in gpio_la_poll_probe() Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 025/337] ata: sata_mv: accept 1 or 2 resources in platform probe Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 026/337] ata: libahci_platform: support non-consecutive port numbers Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 027/337] ahci: Introduce ahci_ignore_port() helper Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 028/337] ata: ahci_ceva: fix error paths in ceva_ahci_platform_enable_resources() Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 029/337] ASoC: max98095: fix missing IS_ERR() before PTR_ERR() on mclk lookup Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 030/337] ASoC: max98090: " Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 031/337] of: reserved_mem: Add code to dynamically allocate reserved_mem array Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 032/337] of: reserved_mem: prevent OOB when too many dynamic regions are defined Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 033/337] btrfs: fix leaking BTRFS_FS_STATE_REMOUNTING flag Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 034/337] btrfs: zoned: fix deadlock between metadata writeback and transaction commit Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 035/337] phy-zynqmp: Postpone getting clock rate until actually needed Greg Kroah-Hartman
2026-08-07 14:33 ` [PATCH 6.12 036/337] phy: zynqmp: fix clock error handling in xpsgtr_phy_init() Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 037/337] phy: zynqmp: fix runtime PM leak on probe allocation failure Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 038/337] netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp() Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 039/337] drm/mediatek: Check CRTC state before freeing Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 040/337] Drivers: hv: vmbus: Replace lockdep_hardirq_threaded() with lockdep annotation Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 041/337] KEYS: trusted: dcp: fix key_len validation and calc_blob_len() return type Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 042/337] keys: fix out-of-bounds read in keyring_get_key_chunk() Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 043/337] keys: make keyring key-chunk byte order agree with keyring_diff_objects() Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 044/337] assoc_array: trim the final shortcut word using the current chunk end Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 045/337] netfilter: nf_tables: make nft_object rhltable per table Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 046/337] netfilter: xt_hashlimit: validate hashtable supports XT_HASHLIMIT_RATE_MATCH Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 047/337] ipvs: fix the checksum validations Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 048/337] ipvs: fix places with wrong packet offsets Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 049/337] ipvs: do not mangle ICMP replies for non-first fragments Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 050/337] netfilter: nft_payload: fix mask build for partial field offload Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 051/337] rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 052/337] rds: tcp: hold the RCU lock across ipv6_chk_addr() in rds_tcp_laddr_check() Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 053/337] pinctrl-amd: Dont clear S4 wake bits at probe Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 054/337] scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 055/337] scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 056/337] scsi: libsas: Fix HA resume deadlock and hisi_sas disk-wake race Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 057/337] smb: client: fix buffer leaks in SMB1 read and write Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 058/337] spi: spi-cadence: supports transmission with bits_per_word of 16 and 32 Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 059/337] spi: spi-cadence: Move TX FIFO full busy-wait into FIFO Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 060/337] hwmon: (nct6775-core) Fix number of temperature registers for NCT6116 Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 061/337] hwmon: (ina2xx) Add support for has_alerts configuration flag Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 062/337] hwmon: (ina2xx) Add support for INA260 Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 063/337] hwmon: (ina226) Add support for SY24655 Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 064/337] hwmon: (ina2xx) Make it easier to add more devices Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 065/337] hwmon: (ina2xx) Add support for INA234 Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 066/337] hwmon: (ina2xx) Shift INA234 shunt and current registers Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 067/337] hwmon: (ina2xx) Fix various overflow issues Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 068/337] hwmon: (ltc4282) Fix reading the minimum alarm voltage Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 069/337] hwmon: (sht3x) Fix unaligned accesses Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 070/337] hwmon: (lm90) Only report alarms if driver is ready Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 071/337] hwmon: (nzxt-smart2) DMA-align output buffer Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 072/337] net: do not send ICMP/NDISC Redirects when peer allocation fails Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 073/337] hwmon: (nct6775-core) Prevent access to unsupported weight registers Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 074/337] net: bridge: mrp: fix Option TLV length in MRP_Test frames Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 075/337] forcedeth: fix UAF of txrx_stats in nv_remove Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 076/337] hwmon: (adt7470) Fix fans stuck in manual mode on I2C errors Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 077/337] hwmon: (adt7470) Fix cache updated before hardware write on I2C error Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 078/337] hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 079/337] hwmon: (adt7470) Fix temperature alarm logic in hwmon_temp_read() Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 080/337] hwmon: (adt7470) Fix swapped PWM3 and PWM4 auto mode masks Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 081/337] hwmon: (adt7470) Use cached PWM frequency value Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 082/337] hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 083/337] hwmon: (adt7470) Fix PWM auto temp state array and bounds check Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 084/337] rtase: fix double free of multi-frag skb on DMA map failure Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 085/337] powerpc/boot: Fix simpleboot CPU node lookup check Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 086/337] powerpc/boot: Fix treeboot-currituck " Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 087/337] powerpc/boot: Fix treeboot-akebono " Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 088/337] net: udp_tunnel: fix memory leak in udp_tunnel_nic_unregister() Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 089/337] wifi: mac80211: validate individual TWT params before driver setup Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 090/337] net: ethernet: mtk_eth_soc: support named IRQs Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 091/337] net: ethernet: mtk_eth_soc: add consts for irq index Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 092/337] net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 093/337] hwmon: (pmbus) Fix return value from pmbus_update_byte_data() Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 094/337] idpf: adjust TxQ ring count minimum Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 095/337] idpf: Fix mailbox IRQ name leak on request failure Greg Kroah-Hartman
2026-08-07 14:34 ` [PATCH 6.12 096/337] Bluetooth: ISO: clear iso_data always when detaching conn from hcon Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 097/337] Bluetooth: L2CAP: fix UAF in l2cap_le_connect_rsp Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 098/337] Bluetooth: ISO: fix timeout vs sync_timeout typo in check_bcast_qos Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 099/337] Bluetooth: ISO: validate sockaddr_iso first in iso_sock_rebind_bis() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 100/337] Bluetooth: ISO: fix leaking sk after socket release Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 101/337] Bluetooth: ISO: avoid deadlocks in iso_sock_timeout Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 102/337] Bluetooth: btintel: Validate length before parsing diagnostics TLV Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 103/337] Bluetooth: hci_sync: make hci_cmd_sync_run_once return -EEXIST if exists Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 104/337] Bluetooth: hci_conn: hold conn reference in abort_conn_sync() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 105/337] Bluetooth: hci_sync: fix hci_conn_del() use in hci_le_create_conn_sync Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 106/337] Bluetooth: hci_sync: remove unnecessary hci_conn_get in create_conn_sync Greg Kroah-Hartman
2026-08-08 17:08 ` Harshit Mogalapalli
2026-08-09 15:08 ` Sasha Levin
2026-08-07 14:35 ` [PATCH 6.12 107/337] net: phylink: put link_gpio if phylink_create fails Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 108/337] scsi: target: iblock: Fix wrong PR ops NULL check for PREEMPT/RELEASE Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 109/337] scsi: ufs: core: Cancel RTC work in active-active suspend Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 110/337] scsi: zfcp: Fix memory leak during adapter release by destroying gid_pn_req Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 111/337] scsi: target: Clear cmd_cnt when initial counter enrollment fails Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 112/337] net: sxgbe: free TX rings on RX allocation failure Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 113/337] net: sxgbe: check descriptor ring allocation failures Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 114/337] can: isotp: check register_netdevice_notifier() error in module init Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 115/337] tracing/mmiotrace: Reset dropped_count in mmio_reset_data() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 116/337] tracing: Remove TRACE_EVENT_FL_FILTERED logic Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 117/337] tracing/mmiotrace: Add NULL check for mmio_trace_array in logging functions Greg Kroah-Hartman
2026-08-08 17:23 ` Harshit Mogalapalli
2026-08-08 22:22 ` Steven Rostedt
2026-08-07 14:35 ` [PATCH 6.12 118/337] accel/qaic: use sizeof(*trans_hdr) for transaction length check Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 119/337] riscv: mm: Fix out-of-bounds page-table walk during memory hot-remove Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 120/337] net: dsa: mt7530: check bus->read() errors in the MDIO regmap backend Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 121/337] net: dsa: mt7530: error out on failed reads in MT7531 PHY polling Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 122/337] net: libwx: fix FDIR ATR queue mismatch for software VLAN packets Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 123/337] octeontx2-pf: Set correct sequence for carrier off and tx queue stop Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 124/337] sched/deadline: Use revised wakeup rule only for running dl_server Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 125/337] qede: sync udp_tunnel ports outside qede_lock in the recovery path Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 126/337] ksmbd: return success for deferred final close Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 127/337] ksmbd: fix use-after-free in __close_file_table_ids() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 128/337] rhashtable: clear stale iter->p on table restart Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 129/337] pinctrl: microchip-sgpio: add missing select REGMAP_MMIO Greg Kroah-Hartman
2026-08-08 17:33 ` Harshit Mogalapalli
2026-08-09 15:08 ` Sasha Levin
2026-08-07 14:35 ` [PATCH 6.12 130/337] pinctrl: devicetree: dont free uninitialized dev_name on error path Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 131/337] erofs: cap LZMA stream pool size Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 132/337] pinctrl: bm1880: add missing select GENERIC_PINCONF Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 133/337] fortify: Disable -Wstringop-overread in tests Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 134/337] mm: migrate_device: fix pte_pfn/pte_dirty called on non-present PTE Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 135/337] fs/proc/task_mmu: fix PAGEMAP_SCAN written state for PMD holes Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 136/337] mm/percpu-km: fix bitmap overflow and accounting in pcpu_create_chunk() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 137/337] mm/hugetlb: fix list corruption in allocate_file_region_entries() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 138/337] mm/vmstat: fold stranded per-cpu node stats when a node comes online Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 139/337] tracing/probes: Reject $arg0 in meta argument expansion Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 140/337] KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 141/337] KVM: s390: pci: Reject adapter interrupt forwarding if already enabled Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 142/337] KVM: s390: pci: Fix NULL dereference on AIBV allocation failure Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 143/337] KVM: s390: pci: Validate AIBV and AISB before pinning guest pages Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 144/337] sctp: validate Adaptation Indication parameter length Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 145/337] audit: fix potential integer overflow in audit_log_n_string() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 146/337] audit: fix potential use-after-free in audit_del_rule() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 147/337] Bluetooth: btusb: Fix short read errors in btusb_qca_send_vendor_req() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 148/337] Bluetooth: btmtk: Fix short read errors in btmtk_usb_uhw_reg_read() Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 149/337] Bluetooth: mgmt: fix pending command UAF in EIR updates Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 150/337] Bluetooth: mgmt: fix UAF in pair command cancellation Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 151/337] Bluetooth: hci_sync: Fix advertising data UAFs Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 152/337] Bluetooth: HIDP: reject frames without a transaction header Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 153/337] Bluetooth: HIDP: validate numbered report payloads Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 154/337] bpf: lwt: Fix dst reference leak on reroute failure Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 155/337] ALSA: 6fire: Fix UAF at error handling during probe Greg Kroah-Hartman
2026-08-07 14:35 ` [PATCH 6.12 156/337] ALSA: lx6464es: fix period byte count for 16-bit streams Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 157/337] ALSA: pcm: wake linked drain waiters on unlink Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 158/337] ALSA: seq: Fix division by zero in initialize_timer() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 159/337] ALSA: timer: Clear SNDRV_TIMER_IFLG_DEAD once the close completes Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 160/337] ALSA: ump: fix double free of out_cvts on rawmidi error Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 161/337] ASoC: tas2562: fix DVC coefficient write order Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 162/337] ASoC: tas2562: fix broken entries in the volume lookup table Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 163/337] ata: libata-eh: Increase STANDBY IMMEDIATE timeout Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 164/337] ata: libata-sata: fix ata_scsi_lpm_supported() iteration Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 165/337] ALSA: usb-audio: fix use-after-free in ump_to_endpoint() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 166/337] ALSA: usb-audio: fix stack info leak in RME Digiface status Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 167/337] ALSA: usb-audio: fix OOB write in snd_usbmidi_akai_output() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 168/337] ALSA: usb-audio: Fix DMA buffer out-of-bounds write when fill_max is set Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 169/337] ALSA: usb-audio: Clamp frame size in implicit-feedback mode Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 170/337] dmaengine: qcom: bam_dma: Fix command element mask field for BAM v1.6.0+ Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 171/337] e1000: fix memory leak in e1000_probe() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 172/337] igbvf: Fix leak in TX DMA error cleanup Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 173/337] ipvs: do not propagate one-packet flag to synced conns Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 174/337] net/smc: fix socket use-after-free during link group termination Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 175/337] netfilter: ipset: do not update comments from kernel-side hash adds Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 176/337] tipc: avoid use-after-free in poll trace queue dumps Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 177/337] wifi: mwifiex: use the subframe length when parsing A-MSDU TDLS frames Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 178/337] binfmt_misc: reject a flag character as the field delimiter Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 179/337] binfmt_misc: dont let an F entry pin its own instance Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 180/337] mm/page_reporting: use system_freezable_wq to fix UAF during suspend Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 181/337] mm: memcg: initialize *locked in memcg1_oom_prepare() stub Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 182/337] net: bridge: stop fast-leave after deleting a port group Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 183/337] net: ipv6: clear suppressed fib6 rule result Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 184/337] powerpc/ps3: Fix map failure path in dma_ioc0_map_pages() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 185/337] um: vector: fix use-after-free in vector_mmsg_rx() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 186/337] veth: convert frag_list skbs before running XDP Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 187/337] vxlan: re-fetch eth header after route_shortcircuit() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 188/337] vxlan: unclone skb head before modifying eth header in route_shortcircuit() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 189/337] vxlan: use neigh_ha_snapshot() " Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 190/337] vxlan: use pskb_network_may_pull() " Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 191/337] ublk: reset kernel-owned dev_info fields in ublk_ctrl_add_dev() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 192/337] tracing: Check return value of __register_event() in trace_module_add_events() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 193/337] tracing/filters: Fix false positive match in regex_match_full() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 194/337] spi: qcom-qspi: Correct max DMA length to avoid 64K boundary failure Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 195/337] selftests/mm: fix potential wild pointer access of getline due to missing init Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 196/337] selftests/clone3: fix " Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 197/337] scsi: scsi_debug: Fix REPORT ZONES alloc_len underflow OOB write Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 198/337] sctp: reject stale cookies with mismatched verification tags Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 199/337] sctp: prevent peer transport count overflow Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 200/337] hwmon: (npcm750-pwm-fan): stop fan timer on device detach Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 201/337] hwmon: (pmbus/core) notify on the hwmon device, not the i2c client Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 202/337] i2c: amd-mp2: Unregister callback on adapter add failure Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 203/337] gpio: pca953x: fix cache_only and IRQ state on restore_context() failure Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 204/337] cpufreq: powernow-k8: Fix possible memory leak in powernowk8_cpu_init() Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 205/337] cpufreq: schedutil: Publish util hooks only after all sg_cpu are initialized Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 206/337] power: supply: bq25890: fix the -10 C NTC lookup entry Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 207/337] power: supply: max17040: handle missing status supplier Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 208/337] s390/pci: Fix s390_pci_mmio_write syscall error return without MIO Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 209/337] s390/qeth: Check CAP_NET_ADMIN for private ioctls Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 210/337] s390/dasd: Fix potential NULL pointer dereference Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 211/337] s390/dasd: Fix undersized format-check buffer Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 212/337] s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 213/337] s390/zcrypt: Validate length for CCA AES cipher key requests Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 214/337] s390/zcrypt: Validate length for CCA ECC private " Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 215/337] phy: zynqmp: fix L0_TM_DISABLE_SCRAMBLE_ENCODER mask Greg Kroah-Hartman
2026-08-07 14:36 ` [PATCH 6.12 216/337] phy: zynqmp: use read-modify-write for SERDES scrambler bypass Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 217/337] phy: zynqmp: keep SERDES scrambler and 8b/10b enabled for USB Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 218/337] net: openvswitch: fix potential UAF on meter attach failure Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 219/337] net: openvswitch: fix skb leak on flow key update failure during recirculation Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 220/337] net: openvswitch: fix skb leak on flow key update failure during ct Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 221/337] ice: wait for reset completion in ice_resume() Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 222/337] ice: fix memory leak in ice_lbtest_prepare_rings() Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 223/337] i2c: jz4780: Cache host clock rate at probe to prevent CCF prepare_lock deadlock Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 224/337] i2c: iproc: reset bus after timeout if START_BUSY is stuck Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 225/337] i2c: imx: Fix slave registration race and error handling Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 226/337] i2c: imx: Cancel hrtimer before clearing slave pointer Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 227/337] can: c_can: c_can_chip_config(): keep controller in init mode until bittiming is configured Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 228/337] can: ems_usb: validate CPC message lengths Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 229/337] can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 230/337] can: gs_usb: gs_usb_receive_bulk_callback(): resubmit URB on skb allocation failure Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 231/337] can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 232/337] can: j1939: use netdevice_tracker for j1939_{priv,session,ecu} tracking Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 233/337] can: kvaser_usb: kvaser_usb_hydra_get_busparams(): fix memory leak in kvaser_usb_hydra_get_busparams() Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 234/337] can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 235/337] can: softing: fw_parse(): validate firmware record spans Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 236/337] can: peak_usb: add bounds check for USB channel index Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 237/337] can: peak_usb: peak_usb_start(): fix double free of transfer buffer on URB submit error Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 238/337] can: peak_usb: validate uCAN receive record lengths Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 239/337] can: ctucanfd: add missing MODULE_DEVICE_TABLE() Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 240/337] can: ctucanfd: use self-test mode for PRESUME_ACK Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 241/337] can: ctucanfd: unmap BAR0 using base address Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 242/337] can: ctucanfd: handle bus error interrupts Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 243/337] can: ctucanfd: mark error-active controller status valid Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 244/337] drm/dp: Read the PCON max FRL bandwidth only for HDMI DFPs Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 245/337] drm/vc4: Supply the overflow slot size in BPOS, not the whole bin BO size Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 246/337] drm/vc4: Zero the tile state data array before each BIN job Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 247/337] drm/panthor: reject firmware sections with oversized data Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 248/337] drm/panthor: validate firmware interface structure sizes Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 249/337] drm/mediatek: ovl_adaptor: balance component registrations Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 250/337] drm/amdgpu: restore UMD profile pstate after runtime resume Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 251/337] drm/amdgpu: cap GTT size to physical RAM on APUs Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 252/337] drm/amd/display: Increase HDMI AV mute wait from 2 to 3 frames Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 253/337] drm/amd/display: use proper context for logging Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 254/337] drm/amdkfd: Fix missing authorization check in KFD_IOC_DBG_TRAP_DISABLE Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 255/337] drm/amdkfd: fix QID bit leak in pqm_create_queue() Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 256/337] drm/amdkfd: fix uint32_t overflow in EOP ring buffer size alignment Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 257/337] drm/amdkfd: Handle invalid event type in CRIU event restore Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 258/337] drm/amdkfd: hold event_mutex while checkpointing CRIU events Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 259/337] drm/vmwgfx: fix guest_memory_dirty bitfield clobbered as size Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 260/337] drm/vmwgfx: reject DX_BIND_QUERY without a DX context Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 261/337] drm/vmwgfx: drop dma_buf reference on foreign-fd prime import Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 262/337] drm/vmwgfx: validate DRAW_PRIMITIVES header size before division Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 263/337] drm/vmwgfx: bound DMA command body size against suffix pointer Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 264/337] drm/vmwgfx: avoid destroy_workqueue(NULL) on vkms init failure Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 265/337] drm/vmwgfx: use check_add_overflow for shader size+offset bound Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 266/337] drm/vmwgfx: validate external BO copy bounds for both stride paths Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 267/337] spi: spi-cadence: enable SPI_CONTROLLER_MUST_TX Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 268/337] HID: logitech-dj: Fix maxfield check in DJ short report validation Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 269/337] ata: libahci_platform: Do not set mask_port_map when not needed Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 270/337] ata: ahci: Make ahci_ignore_port() handle empty mask_port_map Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 271/337] of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 272/337] Bluetooth: ISO: fix CONNECTED -> CLOSED transition on shutdown/release Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 273/337] drm/xe/rtp: Refactor OAG MMIO trigger register whitelisting Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 274/337] drm/xe: Introduce xe_gt_dbg_printer() Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 275/337] drm/xe: Apply whitelist to engine save-restore Greg Kroah-Hartman
2026-08-07 14:37 ` [PATCH 6.12 276/337] drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 277/337] drm/xe/rtp: Maintain OA whitelists separately Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 278/337] drm/xe/rtp: Keep track of non-OA nonpriv slots Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 279/337] drm/xe/rtp: Generalize whitelist_apply_to_hwe Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 280/337] drm/xe/rtp: Save OA nonpriv registers to register save/restore lists Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 281/337] drm/xe/rtp: Toggle deny bit to (de-)whitelist OA regs Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 282/337] drm/xe/rtp: (De-)whitelist OA registers for all hwes for a gt Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 283/337] drm/xe/oa: (De-)whitelist OA registers on OA stream open/release Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 284/337] drm/xe/rtp: Ensure locking/ref counting for OA whitelists Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 285/337] mm/hugetlb: fix swap entry corruption when clearing uffd-wp at fork() Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 286/337] fs/proc/task_mmu: fix PAGEMAP_SCAN written state for unpopulated ptes Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 287/337] mm/huge_memory: unlock i_mmap_rwsem before releasing after-split folios Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 288/337] lib/alloc_tag: introduce mem_alloc_profiling_permanently_disabled() Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 289/337] mm/slab: prevent unbounded recursion in free path with new kmalloc type Greg Kroah-Hartman
2026-08-07 18:02 ` Nathan Chancellor
2026-08-08 11:10 ` Sasha Levin
2026-08-07 14:38 ` [PATCH 6.12 290/337] gpio: pch: use raw_spinlock_t for the register lock Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 291/337] usb: gadget: f_tcm: synchronize delayed set_alt with teardown Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 292/337] usb: typec: ucsi: split connector lock classes Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 293/337] usb: typec: ucsi: Fix race condition and ordering in port unregistration Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 294/337] media: i2c: imx219: Rename VTS to FRM_LENGTH Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 295/337] media: imx219: Fix maximum frame length in lines Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 296/337] media: chips-media: wave5: Support CBP profile Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 297/337] media: uapi: rkisp: Correct name version enum Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 298/337] wifi: brcmfmac: drain bus_reset work on device removal Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 299/337] wifi: ath6kl: fix use-after-free in aggr_reset_state() Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 300/337] wifi: brcmfmac: fix 43752 SDIO FWVID incorrectly labelled as Cypress (CYW) Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 301/337] wifi: brcmfmac: set F2 blocksize to 256 for BCM43752 Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 302/337] ALSA: hda: codecs: hdmi: disable keep-alive before audio format change Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 303/337] mptcp: pm: avoid code duplication to lookup endp Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 304/337] mptcp: add mptcp_userspace_pm_lookup_addr helper Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 305/337] mptcp: pm: use addr entry for get_local_id Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 306/337] mptcp: pm: userspace: fix use-after-free in get_local_id Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 307/337] kmemleak: iommu/iova: fix transient kmemleak false positive Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 308/337] mm/kmemleak: fix checksum computation for per-cpu objects Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 309/337] drm/amdgpu: Respect placement requirements in amdgpu_gtt_mgr functions Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 310/337] drm/amdgpu: Fix context pstate override handling Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 311/337] drm/sched: Store the drm client_id in drm_sched_fence Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 312/337] drm/amdgpu: give each kernel job a unique id Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 313/337] drm/amdgpu/gfx: fix cleaner shader IB buffer overflow Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 314/337] drm/fb-helper: Allocate and release fb_info in single place Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 315/337] drm/tegra: fbdev: Remove offset into framebuffer memory Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 316/337] drm/exec: Remove the index parameter from drm_exec_for_each_locked_obj[_reverse] Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 317/337] drm/xe: Wait on external BO kernel fences in exec IOCTL Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 318/337] drm/i915/vrr: Check HAS_VRR() first in intel_vrr_is_capable() Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 319/337] drm/i915/vrr: require valid min/max vfreq for VRR Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 320/337] drm/xe: Rename ___xe_bo_create_locked() Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 321/337] drm/xe: Hold a dma-buf reference for imported BOs Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 322/337] drm/i915/hdcp: Move to using intel_display in intel_hdcp Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 323/337] drm/i915/hdcp: require monotonically increasing seq_num_v Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 324/337] drm/i915/hdcp: Skip inactive MST connectors when building stream list Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 325/337] drm/i915/hdcp: check streams[] bounds before overflow Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 326/337] drm/xe: Stub out new pagefault layer Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 327/337] drm/xe/pt: Reset current_op in xe_pt_update_ops_init() Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 328/337] rxrpc: Generate rtt_min Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 329/337] rxrpc: Adjust the rxrpc_rtt_rx tracepoint Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 330/337] rxrpc: Fix the calculation and use of RTO Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 331/337] rxrpc: Manage RTT per-call rather than per-peer Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 332/337] rxrpc: Fix irq-disabled in local_bh_enable() Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 333/337] can: use skb hash instead of private variable in headroom Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 334/337] can: isotp: fix timer drain order, wakeup handling and tx_gen ordering Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 335/337] usb: typec: ucsi: Correct teardown ordering in ucsi_init() error path Greg Kroah-Hartman
2026-08-07 14:38 ` [PATCH 6.12 336/337] drm/fb-helper: Fix a locking bug in an " Greg Kroah-Hartman
2026-08-07 14:39 ` [PATCH 6.12 337/337] drm/tegra: fbdev: Do not assign to struct drm_fb_helper.info Greg Kroah-Hartman
2026-08-07 18:32 ` [PATCH 6.12 000/337] 6.12.103-rc1 review Pavel Machek
2026-08-08 0:34 ` Shuah Khan
2026-08-08 2:36 ` Peter Schneider
2026-08-08 10:22 ` Brett A C Sheffield
2026-08-08 20:39 ` Harshit Mogalapalli
2026-08-08 22:52 ` Ron Economos
2026-08-09 8:28 ` Miguel Ojeda
2026-08-09 11:55 ` Mark Brown
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