[PATCH 4.19 00/96] 4.19.322-rc1 review

[PATCH 4.19 00/96] 4.19.322-rc1 review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 4.19.322 release.
There are 96 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 Thu, 12 Sep 2024 09:25:22 +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/v4.x/stable-review/patch-4.19.322-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-4.19.y
and the diffstat can be found below.

thanks,

greg k-h

-------------
Pseudo-Shortlog of commits:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 4.19.322-rc1

Li RongQing <lirongqing@baidu.com>
    netns: restore ops before calling ops_exit_list

Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
    net: bridge: explicitly zero is_sticky in fdb_create

Zhang Changzhong <zhangchangzhong@huawei.com>
    cx82310_eth: fix error return code in cx82310_bind()

Daniel Borkmann <daniel@iogearbox.net>
    net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket

Roland Xu <mu001999@outlook.com>
    rtmutex: Drop rt_mutex::wait_lock before scheduling

Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    drm/i915/fence: Mark debug_fence_free() with __maybe_unused

Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    drm/i915/fence: Mark debug_fence_init_onstack() with __maybe_unused

Jonathan Cameron <Jonathan.Cameron@huawei.com>
    ACPI: processor: Fix memory leaks in error paths of processor_add()

Jonathan Cameron <Jonathan.Cameron@huawei.com>
    ACPI: processor: Return an error if acpi_processor_get_info() fails in processor_add()

Eric Dumazet <edumazet@google.com>
    ila: call nf_unregister_net_hooks() sooner

Eric Dumazet <edumazet@google.com>
    netns: add pre_exit method to struct pernet_operations

Ryusuke Konishi <konishi.ryusuke@gmail.com>
    nilfs2: protect references to superblock parameters exposed in sysfs

Qing Wang <wangqing@vivo.com>
    nilfs2: replace snprintf in show functions with sysfs_emit

Zheng Yejian <zhengyejian@huaweicloud.com>
    tracing: Avoid possible softlockup in tracing_iter_reset()

Steven Rostedt (VMware) <rostedt@goodmis.org>
    ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance()

Sven Schnelle <svens@linux.ibm.com>
    uprobes: Use kzalloc to allocate xol area

Jacky Bai <ping.bai@nxp.com>
    clocksource/drivers/imx-tpm: Fix next event not taking effect sometime

Jacky Bai <ping.bai@nxp.com>
    clocksource/drivers/imx-tpm: Fix return -ETIME when delta exceeds INT_MAX

David Fernandez Gonzalez <david.fernandez.gonzalez@oracle.com>
    VMCI: Fix use-after-free when removing resource in vmci_resource_remove()

Naman Jain <namjain@linux.microsoft.com>
    Drivers: hv: vmbus: Fix rescind handling in uio_hv_generic

Saurabh Sengar <ssengar@linux.microsoft.com>
    uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind

Geert Uytterhoeven <geert+renesas@glider.be>
    nvmem: Fix return type of devm_nvmem_device_get() in kerneldoc

Matteo Martelli <matteomartelli3@gmail.com>
    iio: fix scale application in iio_convert_raw_to_processed_unlocked

David Lechner <dlechner@baylibre.com>
    iio: buffer-dmaengine: fix releasing dma channel on error

Michael Ellerman <mpe@ellerman.id.au>
    ata: pata_macio: Use WARN instead of BUG

Stefan Wiehler <stefan.wiehler@nokia.com>
    of/irq: Prevent device address out-of-bounds read in interrupt map walk

Phillip Lougher <phillip@squashfs.org.uk>
    Squashfs: sanity check symbolic link size

Oliver Neukum <oneukum@suse.com>
    usbnet: ipheth: race between ipheth_close and error handling

Dmitry Torokhov <dmitry.torokhov@gmail.com>
    Input: uinput - reject requests with unreasonable number of slots

Camila Alvarez <cam.alvarez.i@gmail.com>
    HID: cougar: fix slab-out-of-bounds Read in cougar_report_fixup

David Sterba <dsterba@suse.com>
    btrfs: initialize location to fix -Wmaybe-uninitialized in btrfs_lookup_dentry()

Dan Williams <dan.j.williams@intel.com>
    PCI: Add missing bridge lock to pci_bus_lock()

Josef Bacik <josef@toxicpanda.com>
    btrfs: clean up our handling of refs == 0 in snapshot delete

Josef Bacik <josef@toxicpanda.com>
    btrfs: replace BUG_ON with ASSERT in walk_down_proc()

Zqiang <qiang.zhang1211@gmail.com>
    smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu()

Sascha Hauer <s.hauer@pengutronix.de>
    wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()

Guenter Roeck <linux@roeck-us.net>
    hwmon: (w83627ehf) Fix underflows seen when writing limit attributes

Guenter Roeck <linux@roeck-us.net>
    hwmon: (nct6775-core) Fix underflows seen when writing limit attributes

Guenter Roeck <linux@roeck-us.net>
    hwmon: (lm95234) Fix underflows seen when writing limit attributes

Guenter Roeck <linux@roeck-us.net>
    hwmon: (adc128d818) Fix underflows seen when writing limit attributes

Krishna Kumar <krishnak@linux.ibm.com>
    pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv

Zijun Hu <quic_zijuhu@quicinc.com>
    devres: Initialize an uninitialized struct member

Johannes Berg <johannes.berg@intel.com>
    um: line: always fill *error_out in setup_one_line()

Waiman Long <longman@redhat.com>
    cgroup: Protect css->cgroup write under css_set_lock

Jacob Pan <jacob.jun.pan@linux.intel.com>
    iommu/vt-d: Handle volatile descriptor status read

Pawel Dembicki <paweldembicki@gmail.com>
    net: dsa: vsc73xx: fix possible subblocks range of CAPT block

Jonas Gorski <jonas.gorski@bisdn.de>
    net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN

Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
    net: bridge: fdb: convert added_by_external_learn to use bitops

Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
    net: bridge: fdb: convert added_by_user to bitops

Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
    net: bridge: fdb: convert is_sticky to bitops

Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
    net: bridge: fdb: convert is_static to bitops

Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
    net: bridge: fdb: convert is_local to bitops

Ido Schimmel <idosch@mellanox.com>
    bridge: switchdev: Allow clearing FDB entry offload indication

Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
    net: bridge: add support for sticky fdb entries

Richard Guy Briggs <rgb@redhat.com>
    rfkill: fix spelling mistake contidion to condition

Oliver Neukum <oneukum@suse.com>
    usbnet: modern method to get random MAC

Jakub Kicinski <kuba@kernel.org>
    net: usb: don't write directly to netdev->dev_addr

Len Baker <len.baker@gmx.com>
    drivers/net/usb: Remove all strcpy() uses

Ondrej Zary <linux@zary.sk>
    cx82310_eth: re-enable ethernet mode after router reboot

Aleksandr Mishin <amishin@t-argos.ru>
    platform/x86: dell-smbios: Fix error path in dell_smbios_init()

Daiwei Li <daiweili@google.com>
    igb: Fix not clearing TimeSync interrupts for 82580

Kuniyuki Iwashima <kuniyu@amazon.com>
    can: bcm: Remove proc entry when dev is unregistered.

Jules Irenge <jbi.octave@gmail.com>
    pcmcia: Use resource_size function on resource object

Chen Ni <nichen@iscas.ac.cn>
    media: qcom: camss: Add check for v4l2_fwnode_endpoint_parse

Arend van Spriel <arend.vanspriel@broadcom.com>
    wifi: brcmsmac: advertise MFP_CAPABLE to enable WPA3

Jan Kara <jack@suse.cz>
    udf: Avoid excessive partition lengths

Yunjian Wang <wangyunjian@huawei.com>
    netfilter: nf_conncount: fix wrong variable type

Kuniyuki Iwashima <kuniyu@amazon.com>
    af_unix: Remove put_pid()/put_cred() in copy_peercred().

Pali Rohár <pali@kernel.org>
    irqchip/armada-370-xp: Do not allow mapping IRQ 0 and 1

Konstantin Andreev <andreev@swemel.ru>
    smack: unix sockets: fix accept()ed socket label

Takashi Iwai <tiwai@suse.de>
    ALSA: hda: Add input value sanity checks to HDMI channel map controls

Ryusuke Konishi <konishi.ryusuke@gmail.com>
    nilfs2: fix state management in error path of log writing function

Ryusuke Konishi <konishi.ryusuke@gmail.com>
    nilfs2: fix missing cleanup on rollforward recovery error

Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
    clk: qcom: clk-alpha-pll: Fix the pll post div mask

Jann Horn <jannh@google.com>
    fuse: use unsigned type for getxattr/listxattr size truncation

Sam Protsenko <semen.protsenko@linaro.org>
    mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K

Zheng Qixing <zhengqixing@huawei.com>
    ata: libata: Fix memory leak for error path in ata_host_alloc()

Christoffer Sandberg <cs@tuxedo.de>
    ALSA: hda/conexant: Add pincfg quirk to enable top speakers on Sirius devices

Stephen Hemminger <stephen@networkplumber.org>
    sch/netem: fix use after free in netem_dequeue

Hillf Danton <hdanton@sina.com>
    ALSA: usb-audio: Fix gpf in snd_usb_pipe_sanity_check

Takashi Iwai <tiwai@suse.de>
    ALSA: usb-audio: Sanity checks for each pipe and EP types

Jan Kara <jack@suse.cz>
    udf: Limit file size to 4TB

Breno Leitao <leitao@debian.org>
    virtio_net: Fix napi_skb_cache_put warning

Christoph Hellwig <hch@lst.de>
    block: initialize integrity buffer to zero before writing it to media

Ricardo Ribalda <ribalda@chromium.org>
    media: uvcvideo: Enforce alignment of frame and interval

Casey Schaufler <casey@schaufler-ca.com>
    smack: tcp: ipv4, fix incorrect labeling

Simon Holesch <simon@holesch.de>
    usbip: Don't submit special requests twice

Leesoo Ahn <lsahn@ooseel.net>
    apparmor: fix possible NULL pointer dereference

Michael Chen <michael.chen@amd.com>
    drm/amdkfd: Reconcile the definition and use of oem_id in struct kfd_topology_device

Tim Huang <Tim.Huang@amd.com>
    drm/amdgpu: fix mc_data out-of-bounds read warning

Tim Huang <Tim.Huang@amd.com>
    drm/amdgpu: fix ucode out-of-bounds read warning

Tim Huang <Tim.Huang@amd.com>
    drm/amdgpu: fix overflowed array index read warning

Ma Jun <Jun.Ma2@amd.com>
    drm/amdgpu: Fix uninitialized variable warning in amdgpu_afmt_acr

Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
    usb: dwc3: st: add missing depopulate in probe error path

Nishka Dasgupta <nishkadg.linux@gmail.com>
    usb: dwc3: st: Add of_node_put() before return in probe function

ZHANG Yuntian <yt@radxa.com>
    net: usb: qmi_wwan: add MeiG Smart SRM825L


-------------

Diffstat:

 Makefile                                           |   4 +-
 arch/um/drivers/line.c                             |   2 +
 block/bio-integrity.c                              |  11 +-
 drivers/acpi/acpi_processor.c                      |  15 +--
 drivers/ata/libata-core.c                          |   4 +-
 drivers/ata/pata_macio.c                           |   7 +-
 drivers/base/devres.c                              |   1 +
 drivers/clk/qcom/clk-alpha-pll.c                   |   2 +-
 drivers/clocksource/timer-imx-tpm.c                |  16 ++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_afmt.c           |   1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c       |   2 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c            |   3 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c           |   3 +-
 drivers/gpu/drm/amd/amdkfd/kfd_crat.h              |   2 -
 drivers/gpu/drm/amd/amdkfd/kfd_topology.c          |   3 +-
 drivers/gpu/drm/amd/amdkfd/kfd_topology.h          |   5 +-
 drivers/gpu/drm/i915/i915_sw_fence.c               |   8 +-
 drivers/hid/hid-cougar.c                           |   2 +-
 drivers/hv/vmbus_drv.c                             |   1 +
 drivers/hwmon/adc128d818.c                         |   4 +-
 drivers/hwmon/lm95234.c                            |   9 +-
 drivers/hwmon/nct6775.c                            |   2 +-
 drivers/hwmon/w83627ehf.c                          |   4 +-
 drivers/iio/buffer/industrialio-buffer-dmaengine.c |   4 +-
 drivers/iio/inkern.c                               |   8 +-
 drivers/input/misc/uinput.c                        |  14 +++
 drivers/iommu/dmar.c                               |   2 +-
 drivers/irqchip/irq-armada-370-xp.c                |   4 +
 drivers/media/platform/qcom/camss/camss.c          |   5 +-
 drivers/media/usb/uvc/uvc_driver.c                 |  18 ++-
 drivers/misc/vmw_vmci/vmci_resource.c              |   3 +-
 drivers/mmc/host/dw_mmc.c                          |   4 +-
 drivers/net/dsa/vitesse-vsc73xx.c                  |  10 +-
 drivers/net/ethernet/intel/igb/igb_main.c          |  10 ++
 .../ethernet/mellanox/mlxsw/spectrum_switchdev.c   |   9 +-
 drivers/net/ethernet/rocker/rocker_main.c          |   1 +
 drivers/net/usb/ch9200.c                           |   4 +-
 drivers/net/usb/cx82310_eth.c                      |  56 +++++++--
 drivers/net/usb/ipheth.c                           |   4 +-
 drivers/net/usb/kaweth.c                           |   3 +-
 drivers/net/usb/mcs7830.c                          |   4 +-
 drivers/net/usb/qmi_wwan.c                         |   1 +
 drivers/net/usb/sierra_net.c                       |   6 +-
 drivers/net/usb/sr9700.c                           |   4 +-
 drivers/net/usb/sr9800.c                           |   5 +-
 drivers/net/usb/usbnet.c                           |  23 ++--
 drivers/net/virtio_net.c                           |   8 +-
 .../broadcom/brcm80211/brcmsmac/mac80211_if.c      |   1 +
 drivers/net/wireless/marvell/mwifiex/main.h        |   3 +
 drivers/nvmem/core.c                               |   6 +-
 drivers/of/irq.c                                   |  15 ++-
 drivers/pci/hotplug/pnv_php.c                      |   3 +-
 drivers/pci/pci.c                                  |  35 +++---
 drivers/pcmcia/yenta_socket.c                      |   6 +-
 drivers/platform/x86/dell-smbios-base.c            |   5 +-
 drivers/uio/uio_hv_generic.c                       |  11 +-
 drivers/usb/dwc3/dwc3-st.c                         |  12 +-
 drivers/usb/usbip/stub_rx.c                        |  77 +++++++-----
 fs/btrfs/extent-tree.c                             |  32 +++--
 fs/btrfs/inode.c                                   |   2 +-
 fs/fuse/xattr.c                                    |   4 +-
 fs/nilfs2/recovery.c                               |  35 +++++-
 fs/nilfs2/segment.c                                |  10 +-
 fs/nilfs2/sysfs.c                                  | 117 +++++++++++--------
 fs/squashfs/inode.c                                |   7 +-
 fs/udf/super.c                                     |  24 +++-
 include/linux/ring_buffer.h                        |   3 +-
 include/net/net_namespace.h                        |   5 +
 include/net/switchdev.h                            |   3 +-
 include/uapi/linux/neighbour.h                     |   1 +
 kernel/cgroup/cgroup.c                             |   2 +-
 kernel/events/uprobes.c                            |   3 +-
 kernel/locking/rtmutex.c                           |   4 +-
 kernel/smp.c                                       |   1 +
 kernel/trace/ring_buffer.c                         |  23 +---
 kernel/trace/trace.c                               |   6 +-
 kernel/trace/trace_functions_graph.c               |   2 +-
 net/bridge/br.c                                    |   4 +-
 net/bridge/br_fdb.c                                | 129 ++++++++++++---------
 net/bridge/br_input.c                              |   2 +-
 net/bridge/br_private.h                            |  18 ++-
 net/bridge/br_switchdev.c                          |  11 +-
 net/can/bcm.c                                      |   4 +
 net/core/net_namespace.c                           |  28 +++++
 net/dsa/slave.c                                    |   1 +
 net/ipv6/ila/ila.h                                 |   1 +
 net/ipv6/ila/ila_main.c                            |   6 +
 net/ipv6/ila/ila_xlat.c                            |  13 ++-
 net/netfilter/nf_conncount.c                       |   8 +-
 net/rfkill/core.c                                  |   4 +-
 net/sched/sch_netem.c                              |   9 +-
 net/sunrpc/xprtsock.c                              |   7 ++
 net/unix/af_unix.c                                 |   9 +-
 security/apparmor/apparmorfs.c                     |   4 +
 security/smack/smack_lsm.c                         |  14 ++-
 sound/hda/hdmi_chmap.c                             |  18 +++
 sound/pci/hda/patch_conexant.c                     |  11 ++
 sound/usb/helper.c                                 |  17 +++
 sound/usb/helper.h                                 |   1 +
 sound/usb/quirks.c                                 |  14 ++-
 100 files changed, 768 insertions(+), 344 deletions(-)

[PATCH 4.19 01/96] net: usb: qmi_wwan: add MeiG Smart SRM825L

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: ZHANG Yuntian <yt@radxa.com>

[ Upstream commit 1ca645a2f74a4290527ae27130c8611391b07dbf ]

Add support for MeiG Smart SRM825L which is based on Qualcomm 315 chip.

T:  Bus=04 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=5000 MxCh= 0
D:  Ver= 3.20 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 9 #Cfgs=  1
P:  Vendor=2dee ProdID=4d22 Rev= 4.14
S:  Manufacturer=MEIG
S:  Product=LTE-A Module
S:  SerialNumber=6f345e48
C:* #Ifs= 6 Cfg#= 1 Atr=80 MxPwr=896mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
E:  Ad=81(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E:  Ad=01(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
E:  Ad=83(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
E:  Ad=85(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
E:  Ad=84(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E:  Ad=03(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=60 Driver=option
E:  Ad=87(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
E:  Ad=86(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E:  Ad=04(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none)
E:  Ad=05(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E:  Ad=88(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 5 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan
E:  Ad=89(I) Atr=03(Int.) MxPS=   8 Ivl=32ms
E:  Ad=8e(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E:  Ad=0f(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms

Signed-off-by: ZHANG Yuntian <yt@radxa.com>
Link: https://patch.msgid.link/D1EB81385E405DFE+20240803074656.567061-1-yt@radxa.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/qmi_wwan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 881240d939564..bbd5183e5e635 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1390,6 +1390,7 @@ static const struct usb_device_id products[] = {
 	{QMI_FIXED_INTF(0x2692, 0x9025, 4)},    /* Cellient MPL200 (rebranded Qualcomm 05c6:9025) */
 	{QMI_QUIRK_SET_DTR(0x1546, 0x1342, 4)},	/* u-blox LARA-L6 */
 	{QMI_QUIRK_SET_DTR(0x33f8, 0x0104, 4)}, /* Rolling RW101 RMNET */
+	{QMI_FIXED_INTF(0x2dee, 0x4d22, 5)},    /* MeiG Smart SRM825L */
 
 	/* 4. Gobi 1000 devices */
 	{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */
-- 
2.43.0

[PATCH 4.19 02/96] usb: dwc3: st: Add of_node_put() before return in probe function

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nishka Dasgupta <nishkadg.linux@gmail.com>

[ Upstream commit e36721b90144bb46e1b6477be3ab63439c7fb79b ]

The local variable child in the function st_dwc3_probe takes the return
value of of_get_child_by_name, which gets a node and does not put it. If
the function returns without releasing child, this could cause a memory
error. Hence put child as soon as there is no more use for it. Also
create a new label, err_node_put, just before label undo_softreset; so
that err_node_put puts child. In between initialisation of child and its
first put, modify all statements that go to undo_softreset to now go to
err_node_put instead, from where they can fall through to
undo_softreset.
Issue found with Coccinelle.

Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Stable-dep-of: cd4897bfd14f ("usb: dwc3: st: add missing depopulate in probe error path")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/dwc3/dwc3-st.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c
index 6127505770cec..770f80f53c356 100644
--- a/drivers/usb/dwc3/dwc3-st.c
+++ b/drivers/usb/dwc3/dwc3-st.c
@@ -252,24 +252,25 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	if (!child) {
 		dev_err(&pdev->dev, "failed to find dwc3 core node\n");
 		ret = -ENODEV;
-		goto undo_softreset;
+		goto err_node_put;
 	}
 
 	/* Allocate and initialize the core */
 	ret = of_platform_populate(node, NULL, NULL, dev);
 	if (ret) {
 		dev_err(dev, "failed to add dwc3 core\n");
-		goto undo_softreset;
+		goto err_node_put;
 	}
 
 	child_pdev = of_find_device_by_node(child);
 	if (!child_pdev) {
 		dev_err(dev, "failed to find dwc3 core device\n");
 		ret = -ENODEV;
-		goto undo_softreset;
+		goto err_node_put;
 	}
 
 	dwc3_data->dr_mode = usb_get_dr_mode(&child_pdev->dev);
+	of_node_put(child);
 
 	/*
 	 * Configure the USB port as device or host according to the static
@@ -289,6 +290,8 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, dwc3_data);
 	return 0;
 
+err_node_put:
+	of_node_put(child);
 undo_softreset:
 	reset_control_assert(dwc3_data->rstc_rst);
 undo_powerdown:
-- 
2.43.0

[PATCH 4.19 03/96] usb: dwc3: st: add missing depopulate in probe error path

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

[ Upstream commit cd4897bfd14f6a5388b21ba45a066541a0425199 ]

Depopulate device in probe error paths to fix leak of children
resources.

Fixes: f83fca0707c6 ("usb: dwc3: add ST dwc3 glue layer to manage dwc3 HC")
Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240814093957.37940-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/dwc3/dwc3-st.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c
index 770f80f53c356..d355c784f1f18 100644
--- a/drivers/usb/dwc3/dwc3-st.c
+++ b/drivers/usb/dwc3/dwc3-st.c
@@ -266,7 +266,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	if (!child_pdev) {
 		dev_err(dev, "failed to find dwc3 core device\n");
 		ret = -ENODEV;
-		goto err_node_put;
+		goto depopulate;
 	}
 
 	dwc3_data->dr_mode = usb_get_dr_mode(&child_pdev->dev);
@@ -281,6 +281,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	ret = st_dwc3_drd_init(dwc3_data);
 	if (ret) {
 		dev_err(dev, "drd initialisation failed\n");
+		of_platform_depopulate(dev);
 		goto undo_softreset;
 	}
 
@@ -290,6 +291,8 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, dwc3_data);
 	return 0;
 
+depopulate:
+	of_platform_depopulate(dev);
 err_node_put:
 	of_node_put(child);
 undo_softreset:
-- 
2.43.0

[PATCH 4.19 04/96] drm/amdgpu: Fix uninitialized variable warning in amdgpu_afmt_acr

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ma Jun <Jun.Ma2@amd.com>

[ Upstream commit c0d6bd3cd209419cc46ac49562bef1db65d90e70 ]

Assign value to clock to fix the warning below:
"Using uninitialized value res. Field res.clock is uninitialized"

Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_afmt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_afmt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_afmt.c
index 3889486f71fe..5272cf1708cd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_afmt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_afmt.c
@@ -100,6 +100,7 @@ struct amdgpu_afmt_acr amdgpu_afmt_acr(uint32_t clock)
 	amdgpu_afmt_calc_cts(clock, &res.cts_32khz, &res.n_32khz, 32000);
 	amdgpu_afmt_calc_cts(clock, &res.cts_44_1khz, &res.n_44_1khz, 44100);
 	amdgpu_afmt_calc_cts(clock, &res.cts_48khz, &res.n_48khz, 48000);
+	res.clock = clock;
 
 	return res;
 }
-- 
2.43.0

[PATCH 4.19 05/96] drm/amdgpu: fix overflowed array index read warning

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tim Huang <Tim.Huang@amd.com>

[ Upstream commit ebbc2ada5c636a6a63d8316a3408753768f5aa9f ]

Clear overflowed array index read warning by cast operation.

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index 93794a85f83d..d1efab227034 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -497,8 +497,9 @@ static ssize_t amdgpu_debugfs_ring_read(struct file *f, char __user *buf,
 					size_t size, loff_t *pos)
 {
 	struct amdgpu_ring *ring = file_inode(f)->i_private;
-	int r, i;
 	uint32_t value, result, early[3];
+	loff_t i;
+	int r;
 
 	if (*pos & 3 || size & 3)
 		return -EINVAL;
-- 
2.43.0

[PATCH 4.19 06/96] drm/amdgpu: fix ucode out-of-bounds read warning

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tim Huang <Tim.Huang@amd.com>

[ Upstream commit 8944acd0f9db33e17f387fdc75d33bb473d7936f ]

Clear warning that read ucode[] may out-of-bounds.

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index 387f1cf1dc20..9e768ff392fe 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
@@ -212,6 +212,9 @@ static int amdgpu_cgs_get_firmware_info(struct cgs_device *cgs_device,
 		struct amdgpu_firmware_info *ucode;
 
 		id = fw_type_convert(cgs_device, type);
+		if (id >= AMDGPU_UCODE_ID_MAXIMUM)
+			return -EINVAL;
+
 		ucode = &adev->firmware.ucode[id];
 		if (ucode->fw == NULL)
 			return -EINVAL;
-- 
2.43.0

[PATCH 4.19 07/96] drm/amdgpu: fix mc_data out-of-bounds read warning

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tim Huang <Tim.Huang@amd.com>

[ Upstream commit 51dfc0a4d609fe700750a62f41447f01b8c9ea50 ]

Clear warning that read mc_data[i-1] may out-of-bounds.

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
index 95f7bb22402f..fe01df99445d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -1625,6 +1625,8 @@ int amdgpu_atombios_init_mc_reg_table(struct amdgpu_device *adev,
 										(u32)le32_to_cpu(*((u32 *)reg_data + j));
 									j++;
 								} else if ((reg_table->mc_reg_address[i].pre_reg_data & LOW_NIBBLE_MASK) == DATA_EQU_PREV) {
+									if (i == 0)
+										continue;
 									reg_table->mc_reg_table_entry[num_ranges].mc_data[i] =
 										reg_table->mc_reg_table_entry[num_ranges].mc_data[i - 1];
 								}
-- 
2.43.0

[PATCH 4.19 08/96] drm/amdkfd: Reconcile the definition and use of oem_id in struct kfd_topology_device

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Chen <michael.chen@amd.com>

[ Upstream commit 10f624ef239bd136cdcc5bbc626157a57b938a31 ]

Currently oem_id is defined as uint8_t[6] and casted to uint64_t*
in some use case. This would lead code scanner to complain about
access beyond. Re-define it in union to enforce 8-byte size and
alignment to avoid potential issue.

Signed-off-by: Michael Chen <michael.chen@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdkfd/kfd_crat.h     | 2 --
 drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 3 +--
 drivers/gpu/drm/amd/amdkfd/kfd_topology.h | 5 ++++-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.h b/drivers/gpu/drm/amd/amdkfd/kfd_crat.h
index b5cd182b9edd..037539c0b63f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.h
@@ -42,8 +42,6 @@
 #define CRAT_OEMTABLEID_LENGTH	8
 #define CRAT_RESERVED_LENGTH	6
 
-#define CRAT_OEMID_64BIT_MASK ((1ULL << (CRAT_OEMID_LENGTH * 8)) - 1)
-
 /* Compute Unit flags */
 #define COMPUTE_UNIT_CPU	(1 << 0)  /* Create Virtual CRAT for CPU */
 #define COMPUTE_UNIT_GPU	(1 << 1)  /* Create Virtual CRAT for GPU */
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index 5cf499a07806..407201315292 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -863,8 +863,7 @@ static void kfd_update_system_properties(void)
 	dev = list_last_entry(&topology_device_list,
 			struct kfd_topology_device, list);
 	if (dev) {
-		sys_props.platform_id =
-			(*((uint64_t *)dev->oem_id)) & CRAT_OEMID_64BIT_MASK;
+		sys_props.platform_id = dev->oem_id64;
 		sys_props.platform_oem = *((uint64_t *)dev->oem_table_id);
 		sys_props.platform_rev = dev->oem_revision;
 	}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h
index 7d9c3f948dff..e47c0267f206 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h
@@ -164,7 +164,10 @@ struct kfd_topology_device {
 	struct attribute		attr_gpuid;
 	struct attribute		attr_name;
 	struct attribute		attr_props;
-	uint8_t				oem_id[CRAT_OEMID_LENGTH];
+	union {
+		uint8_t				oem_id[CRAT_OEMID_LENGTH];
+		uint64_t			oem_id64;
+	};
 	uint8_t				oem_table_id[CRAT_OEMTABLEID_LENGTH];
 	uint32_t			oem_revision;
 };
-- 
2.43.0

[PATCH 4.19 09/96] apparmor: fix possible NULL pointer dereference

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Leesoo Ahn <lsahn@ooseel.net>

[ Upstream commit 3dd384108d53834002be5630132ad5c3f32166ad ]

profile->parent->dents[AAFS_PROF_DIR] could be NULL only if its parent is made
from __create_missing_ancestors(..) and 'ent->old' is NULL in
aa_replace_profiles(..).
In that case, it must return an error code and the code, -ENOENT represents
its state that the path of its parent is not existed yet.

BUG: kernel NULL pointer dereference, address: 0000000000000030
PGD 0 P4D 0
PREEMPT SMP PTI
CPU: 4 PID: 3362 Comm: apparmor_parser Not tainted 6.8.0-24-generic #24
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014
RIP: 0010:aafs_create.constprop.0+0x7f/0x130
Code: 4c 63 e0 48 83 c4 18 4c 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 c9 45 31 d2 c3 cc cc cc cc <4d> 8b 55 30 4d 8d ba a0 00 00 00 4c 89 55 c0 4c 89 ff e8 7a 6a ae
RSP: 0018:ffffc9000b2c7c98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000000041ed RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000b2c7cd8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff82baac10
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007be9f22cf740(0000) GS:ffff88817bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000030 CR3: 0000000134b08000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ? show_regs+0x6d/0x80
 ? __die+0x24/0x80
 ? page_fault_oops+0x99/0x1b0
 ? kernelmode_fixup_or_oops+0xb2/0x140
 ? __bad_area_nosemaphore+0x1a5/0x2c0
 ? find_vma+0x34/0x60
 ? bad_area_nosemaphore+0x16/0x30
 ? do_user_addr_fault+0x2a2/0x6b0
 ? exc_page_fault+0x83/0x1b0
 ? asm_exc_page_fault+0x27/0x30
 ? aafs_create.constprop.0+0x7f/0x130
 ? aafs_create.constprop.0+0x51/0x130
 __aafs_profile_mkdir+0x3d6/0x480
 aa_replace_profiles+0x83f/0x1270
 policy_update+0xe3/0x180
 profile_load+0xbc/0x150
 ? rw_verify_area+0x47/0x140
 vfs_write+0x100/0x480
 ? __x64_sys_openat+0x55/0xa0
 ? syscall_exit_to_user_mode+0x86/0x260
 ksys_write+0x73/0x100
 __x64_sys_write+0x19/0x30
 x64_sys_call+0x7e/0x25c0
 do_syscall_64+0x7f/0x180
 entry_SYSCALL_64_after_hwframe+0x78/0x80
RIP: 0033:0x7be9f211c574
Code: c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d d5 ea 0e 00 00 74 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 55 48 89 e5 48 83 ec 20 48 89
RSP: 002b:00007ffd26f2b8c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00005d504415e200 RCX: 00007be9f211c574
RDX: 0000000000001fc1 RSI: 00005d504418bc80 RDI: 0000000000000004
RBP: 0000000000001fc1 R08: 0000000000001fc1 R09: 0000000080000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00005d504418bc80
R13: 0000000000000004 R14: 00007ffd26f2b9b0 R15: 00007ffd26f2ba30
 </TASK>
Modules linked in: snd_seq_dummy snd_hrtimer qrtr snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device i2c_i801 snd_timer i2c_smbus qxl snd soundcore drm_ttm_helper lpc_ich ttm joydev input_leds serio_raw mac_hid binfmt_misc msr parport_pc ppdev lp parport efi_pstore nfnetlink dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 hid_generic usbhid hid ahci libahci psmouse virtio_rng xhci_pci xhci_pci_renesas
CR2: 0000000000000030
---[ end trace 0000000000000000 ]---
RIP: 0010:aafs_create.constprop.0+0x7f/0x130
Code: 4c 63 e0 48 83 c4 18 4c 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 c9 45 31 d2 c3 cc cc cc cc <4d> 8b 55 30 4d 8d ba a0 00 00 00 4c 89 55 c0 4c 89 ff e8 7a 6a ae
RSP: 0018:ffffc9000b2c7c98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000000041ed RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000b2c7cd8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff82baac10
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007be9f22cf740(0000) GS:ffff88817bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000030 CR3: 0000000134b08000 CR4: 00000000000006f0

Signed-off-by: Leesoo Ahn <lsahn@ooseel.net>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 security/apparmor/apparmorfs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c
index 80012d21f038..1223b2648a54 100644
--- a/security/apparmor/apparmorfs.c
+++ b/security/apparmor/apparmorfs.c
@@ -1593,6 +1593,10 @@ int __aafs_profile_mkdir(struct aa_profile *profile, struct dentry *parent)
 		struct aa_profile *p;
 		p = aa_deref_parent(profile);
 		dent = prof_dir(p);
+		if (!dent) {
+			error = -ENOENT;
+			goto fail2;
+		}
 		/* adding to parent that previously didn't have children */
 		dent = aafs_create_dir("profiles", dent);
 		if (IS_ERR(dent))
-- 
2.43.0

[PATCH 4.19 10/96] usbip: Dont submit special requests twice

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Simon Holesch <simon@holesch.de>

[ Upstream commit 8b6b386f9aa936ed0c190446c71cf59d4a507690 ]

Skip submitting URBs, when identical requests were already sent in
tweak_special_requests(). Instead call the completion handler directly
to return the result of the URB.

Even though submitting those requests twice should be harmless, there
are USB devices that react poorly to some duplicated requests.

One example is the ChipIdea controller implementation in U-Boot: The
second SET_CONFIGURATION request makes U-Boot disable and re-enable all
endpoints. Re-enabling an endpoint in the ChipIdea controller, however,
was broken until U-Boot commit b272c8792502 ("usb: ci: Fix gadget
reinit").

Signed-off-by: Simon Holesch <simon@holesch.de>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Reviewed-by: Hongren Zheng <i@zenithal.me>
Tested-by: Hongren Zheng <i@zenithal.me>
Link: https://lore.kernel.org/r/20240519141922.171460-1-simon@holesch.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/usb/usbip/stub_rx.c | 77 ++++++++++++++++++++++++-------------
 1 file changed, 50 insertions(+), 27 deletions(-)

diff --git a/drivers/usb/usbip/stub_rx.c b/drivers/usb/usbip/stub_rx.c
index b88eeaee637a..72501198be45 100644
--- a/drivers/usb/usbip/stub_rx.c
+++ b/drivers/usb/usbip/stub_rx.c
@@ -144,53 +144,62 @@ static int tweak_set_configuration_cmd(struct urb *urb)
 	if (err && err != -ENODEV)
 		dev_err(&sdev->udev->dev, "can't set config #%d, error %d\n",
 			config, err);
-	return 0;
+	return err;
 }
 
 static int tweak_reset_device_cmd(struct urb *urb)
 {
 	struct stub_priv *priv = (struct stub_priv *) urb->context;
 	struct stub_device *sdev = priv->sdev;
+	int err;
 
 	dev_info(&urb->dev->dev, "usb_queue_reset_device\n");
 
-	if (usb_lock_device_for_reset(sdev->udev, NULL) < 0) {
+	err = usb_lock_device_for_reset(sdev->udev, NULL);
+	if (err < 0) {
 		dev_err(&urb->dev->dev, "could not obtain lock to reset device\n");
-		return 0;
+		return err;
 	}
-	usb_reset_device(sdev->udev);
+	err = usb_reset_device(sdev->udev);
 	usb_unlock_device(sdev->udev);
 
-	return 0;
+	return err;
 }
 
 /*
  * clear_halt, set_interface, and set_configuration require special tricks.
+ * Returns 1 if request was tweaked, 0 otherwise.
  */
-static void tweak_special_requests(struct urb *urb)
+static int tweak_special_requests(struct urb *urb)
 {
+	int err;
+
 	if (!urb || !urb->setup_packet)
-		return;
+		return 0;
 
 	if (usb_pipetype(urb->pipe) != PIPE_CONTROL)
-		return;
+		return 0;
 
 	if (is_clear_halt_cmd(urb))
 		/* tweak clear_halt */
-		 tweak_clear_halt_cmd(urb);
+		err = tweak_clear_halt_cmd(urb);
 
 	else if (is_set_interface_cmd(urb))
 		/* tweak set_interface */
-		tweak_set_interface_cmd(urb);
+		err = tweak_set_interface_cmd(urb);
 
 	else if (is_set_configuration_cmd(urb))
 		/* tweak set_configuration */
-		tweak_set_configuration_cmd(urb);
+		err = tweak_set_configuration_cmd(urb);
 
 	else if (is_reset_device_cmd(urb))
-		tweak_reset_device_cmd(urb);
-	else
+		err = tweak_reset_device_cmd(urb);
+	else {
 		usbip_dbg_stub_rx("no need to tweak\n");
+		return 0;
+	}
+
+	return !err;
 }
 
 /*
@@ -468,6 +477,7 @@ static void stub_recv_cmd_submit(struct stub_device *sdev,
 	int support_sg = 1;
 	int np = 0;
 	int ret, i;
+	int is_tweaked;
 
 	if (pipe == -1)
 		return;
@@ -580,8 +590,11 @@ static void stub_recv_cmd_submit(struct stub_device *sdev,
 		priv->urbs[i]->pipe = pipe;
 		priv->urbs[i]->complete = stub_complete;
 
-		/* no need to submit an intercepted request, but harmless? */
-		tweak_special_requests(priv->urbs[i]);
+		/*
+		 * all URBs belong to a single PDU, so a global is_tweaked flag is
+		 * enough
+		 */
+		is_tweaked = tweak_special_requests(priv->urbs[i]);
 
 		masking_bogus_flags(priv->urbs[i]);
 	}
@@ -594,22 +607,32 @@ static void stub_recv_cmd_submit(struct stub_device *sdev,
 
 	/* urb is now ready to submit */
 	for (i = 0; i < priv->num_urbs; i++) {
-		ret = usb_submit_urb(priv->urbs[i], GFP_KERNEL);
+		if (!is_tweaked) {
+			ret = usb_submit_urb(priv->urbs[i], GFP_KERNEL);
 
-		if (ret == 0)
-			usbip_dbg_stub_rx("submit urb ok, seqnum %u\n",
-					pdu->base.seqnum);
-		else {
-			dev_err(&udev->dev, "submit_urb error, %d\n", ret);
-			usbip_dump_header(pdu);
-			usbip_dump_urb(priv->urbs[i]);
+			if (ret == 0)
+				usbip_dbg_stub_rx("submit urb ok, seqnum %u\n",
+						pdu->base.seqnum);
+			else {
+				dev_err(&udev->dev, "submit_urb error, %d\n", ret);
+				usbip_dump_header(pdu);
+				usbip_dump_urb(priv->urbs[i]);
 
+				/*
+				 * Pessimistic.
+				 * This connection will be discarded.
+				 */
+				usbip_event_add(ud, SDEV_EVENT_ERROR_SUBMIT);
+				break;
+			}
+		} else {
 			/*
-			 * Pessimistic.
-			 * This connection will be discarded.
+			 * An identical URB was already submitted in
+			 * tweak_special_requests(). Skip submitting this URB to not
+			 * duplicate the request.
 			 */
-			usbip_event_add(ud, SDEV_EVENT_ERROR_SUBMIT);
-			break;
+			priv->urbs[i]->status = 0;
+			stub_complete(priv->urbs[i]);
 		}
 	}
 
-- 
2.43.0

[PATCH 4.19 11/96] smack: tcp: ipv4, fix incorrect labeling

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Casey Schaufler <casey@schaufler-ca.com>

[ Upstream commit 2fe209d0ad2e2729f7e22b9b31a86cc3ff0db550 ]

Currently, Smack mirrors the label of incoming tcp/ipv4 connections:
when a label 'foo' connects to a label 'bar' with tcp/ipv4,
'foo' always gets 'foo' in returned ipv4 packets. So,
1) returned packets are incorrectly labeled ('foo' instead of 'bar')
2) 'bar' can write to 'foo' without being authorized to write.

Here is a scenario how to see this:

* Take two machines, let's call them C and S,
   with active Smack in the default state
   (no settings, no rules, no labeled hosts, only builtin labels)

* At S, add Smack rule 'foo bar w'
   (labels 'foo' and 'bar' are instantiated at S at this moment)

* At S, at label 'bar', launch a program
   that listens for incoming tcp/ipv4 connections

* From C, at label 'foo', connect to the listener at S.
   (label 'foo' is instantiated at C at this moment)
   Connection succeedes and works.

* Send some data in both directions.
* Collect network traffic of this connection.

All packets in both directions are labeled with the CIPSO
of the label 'foo'. Hence, label 'bar' writes to 'foo' without
being authorized, and even without ever being known at C.

If anybody cares: exactly the same happens with DCCP.

This behavior 1st manifested in release 2.6.29.4 (see Fixes below)
and it looks unintentional. At least, no explanation was provided.

I changed returned packes label into the 'bar',
to bring it into line with the Smack documentation claims.

Signed-off-by: Konstantin Andreev <andreev@swemel.ru>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 security/smack/smack_lsm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index d9bff4ba7f2e..158f4df39be4 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -4291,7 +4291,7 @@ static int smack_inet_conn_request(struct sock *sk, struct sk_buff *skb,
 	rcu_read_unlock();
 
 	if (hskp == NULL)
-		rc = netlbl_req_setattr(req, &skp->smk_netlabel);
+		rc = netlbl_req_setattr(req, &ssp->smk_out->smk_netlabel);
 	else
 		netlbl_req_delattr(req);
 
-- 
2.43.0

[PATCH 4.19 12/96] media: uvcvideo: Enforce alignment of frame and interval

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ricardo Ribalda <ribalda@chromium.org>

[ Upstream commit c8931ef55bd325052ec496f242aea7f6de47dc9c ]

Struct uvc_frame and interval (u32*) are packaged together on
streaming->formats on a single contiguous allocation.

Right now they are allocated right after uvc_format, without taking into
consideration their required alignment.

This is working fine because both structures have a field with a
pointer, but it will stop working when the sizeof() of any of those
structs is not a multiple of the sizeof(void*).

Enforce that alignment during the allocation.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20240404-uvc-align-v2-1-9e104b0ecfbd@chromium.org
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/usb/uvc/uvc_driver.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 775d67720648..6367ee9c0066 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -860,16 +860,26 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 		goto error;
 	}
 
-	size = nformats * sizeof(*format) + nframes * sizeof(*frame)
+	/*
+	 * Allocate memory for the formats, the frames and the intervals,
+	 * plus any required padding to guarantee that everything has the
+	 * correct alignment.
+	 */
+	size = nformats * sizeof(*format);
+	size = ALIGN(size, __alignof__(*frame)) + nframes * sizeof(*frame);
+	size = ALIGN(size, __alignof__(*interval))
 	     + nintervals * sizeof(*interval);
+
 	format = kzalloc(size, GFP_KERNEL);
-	if (format == NULL) {
+	if (!format) {
 		ret = -ENOMEM;
 		goto error;
 	}
 
-	frame = (struct uvc_frame *)&format[nformats];
-	interval = (u32 *)&frame[nframes];
+	frame = (void *)format + nformats * sizeof(*format);
+	frame = PTR_ALIGN(frame, __alignof__(*frame));
+	interval = (void *)frame + nframes * sizeof(*frame);
+	interval = PTR_ALIGN(interval, __alignof__(*interval));
 
 	streaming->format = format;
 	streaming->nformats = nformats;
-- 
2.43.0

[PATCH 4.19 13/96] block: initialize integrity buffer to zero before writing it to media

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christoph Hellwig <hch@lst.de>

commit 899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f upstream.

Metadata added by bio_integrity_prep is using plain kmalloc, which leads
to random kernel memory being written media.  For PI metadata this is
limited to the app tag that isn't used by kernel generated metadata,
but for non-PI metadata the entire buffer leaks kernel memory.

Fix this by adding the __GFP_ZERO flag to allocations for writes.

Fixes: 7ba1ba12eeef ("block: Block layer data integrity support")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20240613084839.1044015-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Shivani Agarwal <shivani.agarwal@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 block/bio-integrity.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -227,6 +227,7 @@ bool bio_integrity_prep(struct bio *bio)
 	unsigned int bytes, offset, i;
 	unsigned int intervals;
 	blk_status_t status;
+	gfp_t gfp = GFP_NOIO;
 
 	if (!bi)
 		return true;
@@ -249,12 +250,20 @@ bool bio_integrity_prep(struct bio *bio)
 		if (!bi->profile->generate_fn ||
 		    !(bi->flags & BLK_INTEGRITY_GENERATE))
 			return true;
+
+		/*
+		 * Zero the memory allocated to not leak uninitialized kernel
+		 * memory to disk.  For PI this only affects the app tag, but
+		 * for non-integrity metadata it affects the entire metadata
+		 * buffer.
+		 */
+		gfp |= __GFP_ZERO;
 	}
 	intervals = bio_integrity_intervals(bi, bio_sectors(bio));
 
 	/* Allocate kernel buffer for protection data */
 	len = intervals * bi->tuple_size;
-	buf = kmalloc(len, GFP_NOIO | q->bounce_gfp);
+	buf = kmalloc(len, gfp | q->bounce_gfp);
 	status = BLK_STS_RESOURCE;
 	if (unlikely(buf == NULL)) {
 		printk(KERN_ERR "could not allocate integrity buffer\n");

[PATCH 4.19 14/96] virtio_net: Fix napi_skb_cache_put warning

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Breno Leitao <leitao@debian.org>

commit f8321fa75102246d7415a6af441872f6637c93ab upstream.

After the commit bdacf3e34945 ("net: Use nested-BH locking for
napi_alloc_cache.") was merged, the following warning began to appear:

	 WARNING: CPU: 5 PID: 1 at net/core/skbuff.c:1451 napi_skb_cache_put+0x82/0x4b0

	  __warn+0x12f/0x340
	  napi_skb_cache_put+0x82/0x4b0
	  napi_skb_cache_put+0x82/0x4b0
	  report_bug+0x165/0x370
	  handle_bug+0x3d/0x80
	  exc_invalid_op+0x1a/0x50
	  asm_exc_invalid_op+0x1a/0x20
	  __free_old_xmit+0x1c8/0x510
	  napi_skb_cache_put+0x82/0x4b0
	  __free_old_xmit+0x1c8/0x510
	  __free_old_xmit+0x1c8/0x510
	  __pfx___free_old_xmit+0x10/0x10

The issue arises because virtio is assuming it's running in NAPI context
even when it's not, such as in the netpoll case.

To resolve this, modify virtnet_poll_tx() to only set NAPI when budget
is available. Same for virtnet_poll_cleantx(), which always assumed that
it was in a NAPI context.

Fixes: df133f3f9625 ("virtio_net: bulk free tx skbs")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Heng Qi <hengqi@linux.alibaba.com>
Link: https://patch.msgid.link/20240712115325.54175-1-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[Shivani: Modified to apply on v4.19.y-v5.10.y]
Signed-off-by: Shivani Agarwal <shivani.agarwal@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/virtio_net.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1428,7 +1428,7 @@ static bool is_xdp_raw_buffer_queue(stru
 		return false;
 }
 
-static void virtnet_poll_cleantx(struct receive_queue *rq)
+static void virtnet_poll_cleantx(struct receive_queue *rq, int budget)
 {
 	struct virtnet_info *vi = rq->vq->vdev->priv;
 	unsigned int index = vq2rxq(rq->vq);
@@ -1439,7 +1439,7 @@ static void virtnet_poll_cleantx(struct
 		return;
 
 	if (__netif_tx_trylock(txq)) {
-		free_old_xmit_skbs(sq, true);
+		free_old_xmit_skbs(sq, !!budget);
 		__netif_tx_unlock(txq);
 	}
 
@@ -1456,7 +1456,7 @@ static int virtnet_poll(struct napi_stru
 	unsigned int received;
 	unsigned int xdp_xmit = 0;
 
-	virtnet_poll_cleantx(rq);
+	virtnet_poll_cleantx(rq, budget);
 
 	received = virtnet_receive(rq, budget, &xdp_xmit);
 
@@ -1526,7 +1526,7 @@ static int virtnet_poll_tx(struct napi_s
 	txq = netdev_get_tx_queue(vi->dev, index);
 	__netif_tx_lock(txq, raw_smp_processor_id());
 	virtqueue_disable_cb(sq->vq);
-	free_old_xmit_skbs(sq, true);
+	free_old_xmit_skbs(sq, !!budget);
 
 	opaque = virtqueue_enable_cb_prepare(sq->vq);
 

[PATCH 4.19 15/96] udf: Limit file size to 4TB

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jan Kara <jack@suse.cz>

commit c2efd13a2ed4f29bf9ef14ac2fbb7474084655f8 upstream.

UDF disk format supports in principle file sizes up to 1<<64-1. However
the file space (including holes) is described by a linked list of
extents, each of which can have at most 1GB. Thus the creation and
handling of extents gets unusably slow beyond certain point. Limit the
file size to 4TB to avoid locking up the kernel too easily.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/udf/super.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -86,6 +86,13 @@ enum {
 #define UDF_MAX_LVID_NESTING 1000
 
 enum { UDF_MAX_LINKS = 0xffff };
+/*
+ * We limit filesize to 4TB. This is arbitrary as the on-disk format supports
+ * more but because the file space is described by a linked list of extents,
+ * each of which can have at most 1GB, the creation and handling of extents
+ * gets unusably slow beyond certain point...
+ */
+#define UDF_MAX_FILESIZE (1ULL << 42)
 
 /* These are the "meat" - everything else is stuffing */
 static int udf_fill_super(struct super_block *, void *, int);
@@ -2307,7 +2314,7 @@ static int udf_fill_super(struct super_b
 		ret = -ENOMEM;
 		goto error_out;
 	}
-	sb->s_maxbytes = MAX_LFS_FILESIZE;
+	sb->s_maxbytes = UDF_MAX_FILESIZE;
 	sb->s_max_links = UDF_MAX_LINKS;
 	return 0;
 

[PATCH 4.19 16/96] ALSA: usb-audio: Sanity checks for each pipe and EP types

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 801ebf1043ae7b182588554cc9b9ad3c14bc2ab5 ]

The recent USB core code performs sanity checks for the given pipe and
EP types, and it can be hit by manipulated USB descriptors by syzbot.
For making syzbot happier, this patch introduces a local helper for a
sanity check in the driver side and calls it at each place before the
message handling, so that we can avoid the WARNING splats.

Reported-by: syzbot+d952e5e28f5fb7718d23@syzkaller.appspotmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/usb/helper.c |   17 +++++++++++++++++
 sound/usb/helper.h |    1 +
 sound/usb/quirks.c |   14 +++++++++++---
 3 files changed, 29 insertions(+), 3 deletions(-)

--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -76,6 +76,20 @@ void *snd_usb_find_csint_desc(void *buff
 	return NULL;
 }
 
+/* check the validity of pipe and EP types */
+int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe)
+{
+	static const int pipetypes[4] = {
+		PIPE_CONTROL, PIPE_ISOCHRONOUS, PIPE_BULK, PIPE_INTERRUPT
+	};
+	struct usb_host_endpoint *ep;
+
+	ep = usb_pipe_endpoint(dev, pipe);
+	if (usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
+		return -EINVAL;
+	return 0;
+}
+
 /*
  * Wrapper for usb_control_msg().
  * Allocates a temp buffer to prevent dmaing from/to the stack.
@@ -88,6 +102,9 @@ int snd_usb_ctl_msg(struct usb_device *d
 	void *buf = NULL;
 	int timeout;
 
+	if (snd_usb_pipe_sanity_check(dev, pipe))
+		return -EINVAL;
+
 	if (size > 0) {
 		buf = kmemdup(data, size, GFP_KERNEL);
 		if (!buf)
--- a/sound/usb/helper.h
+++ b/sound/usb/helper.h
@@ -7,6 +7,7 @@ unsigned int snd_usb_combine_bytes(unsig
 void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
 void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
 
+int snd_usb_pipe_sanity_check(struct usb_device *dev, unsigned int pipe);
 int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe,
 		    __u8 request, __u8 requesttype, __u16 value, __u16 index,
 		    void *data, __u16 size);
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -743,11 +743,13 @@ static int snd_usb_novation_boot_quirk(s
 static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev)
 {
 	int err, actual_length;
-
 	/* "midi send" enable */
 	static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 };
+	void *buf;
 
-	void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
+	if (snd_usb_pipe_sanity_check(dev, usb_sndintpipe(dev, 0x05)))
+		return -EINVAL;
+	buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 	err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf,
@@ -772,7 +774,11 @@ static int snd_usb_accessmusic_boot_quir
 
 static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev)
 {
-	int ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+	int ret;
+
+	if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+		return -EINVAL;
+	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 				  0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 				  1, 0, NULL, 0, 1000);
 
@@ -879,6 +885,8 @@ static int snd_usb_axefx3_boot_quirk(str
 
 	dev_dbg(&dev->dev, "Waiting for Axe-Fx III to boot up...\n");
 
+	if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
+		return -EINVAL;
 	/* If the Axe-Fx III has not fully booted, it will timeout when trying
 	 * to enable the audio streaming interface. A more generous timeout is
 	 * used here to detect when the Axe-Fx III has finished booting as the

[PATCH 4.19 17/96] ALSA: usb-audio: Fix gpf in snd_usb_pipe_sanity_check

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hillf Danton <hdanton@sina.com>

[ Upstream commit 5d78e1c2b7f4be00bbe62141603a631dc7812f35 ]

syzbot found the following crash on:

  general protection fault: 0000 [#1] SMP KASAN
  RIP: 0010:snd_usb_pipe_sanity_check+0x80/0x130 sound/usb/helper.c:75
  Call Trace:
    snd_usb_motu_microbookii_communicate.constprop.0+0xa0/0x2fb  sound/usb/quirks.c:1007
    snd_usb_motu_microbookii_boot_quirk sound/usb/quirks.c:1051 [inline]
    snd_usb_apply_boot_quirk.cold+0x163/0x370 sound/usb/quirks.c:1280
    usb_audio_probe+0x2ec/0x2010 sound/usb/card.c:576
    usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
    really_probe+0x281/0x650 drivers/base/dd.c:548
    ....

It was introduced in commit 801ebf1043ae for checking pipe and endpoint
types. It is fixed by adding a check of the ep pointer in question.

BugLink: https://syzkaller.appspot.com/bug?extid=d59c4387bfb6eced94e2
Reported-by: syzbot <syzbot+d59c4387bfb6eced94e2@syzkaller.appspotmail.com>
Fixes: 801ebf1043ae ("ALSA: usb-audio: Sanity checks for each pipe and EP types")
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Hillf Danton <hdanton@sina.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/usb/helper.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/usb/helper.c
+++ b/sound/usb/helper.c
@@ -85,7 +85,7 @@ int snd_usb_pipe_sanity_check(struct usb
 	struct usb_host_endpoint *ep;
 
 	ep = usb_pipe_endpoint(dev, pipe);
-	if (usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
+	if (!ep || usb_pipetype(pipe) != pipetypes[usb_endpoint_type(&ep->desc)])
 		return -EINVAL;
 	return 0;
 }

[PATCH 4.19 18/96] sch/netem: fix use after free in netem_dequeue

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stephen Hemminger <stephen@networkplumber.org>

commit 3b3a2a9c6349e25a025d2330f479bc33a6ccb54a upstream.

If netem_dequeue() enqueues packet to inner qdisc and that qdisc
returns __NET_XMIT_STOLEN. The packet is dropped but
qdisc_tree_reduce_backlog() is not called to update the parent's
q.qlen, leading to the similar use-after-free as Commit
e04991a48dbaf382 ("netem: fix return value if duplicate enqueue
fails")

Commands to trigger KASAN UaF:

ip link add type dummy
ip link set lo up
ip link set dummy0 up
tc qdisc add dev lo parent root handle 1: drr
tc filter add dev lo parent 1: basic classid 1:1
tc class add dev lo classid 1:1 drr
tc qdisc add dev lo parent 1:1 handle 2: netem
tc qdisc add dev lo parent 2: handle 3: drr
tc filter add dev lo parent 3: basic classid 3:1 action mirred egress
redirect dev dummy0
tc class add dev lo classid 3:1 drr
ping -c1 -W0.01 localhost # Trigger bug
tc class del dev lo classid 1:1
tc class add dev lo classid 1:1 drr
ping -c1 -W0.01 localhost # UaF

Fixes: 50612537e9ab ("netem: fix classful handling")
Reported-by: Budimir Markovic <markovicbudimir@gmail.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Link: https://patch.msgid.link/20240901182438.4992-1-stephen@networkplumber.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/sched/sch_netem.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -697,11 +697,10 @@ deliver:
 
 				err = qdisc_enqueue(skb, q->qdisc, &to_free);
 				kfree_skb_list(to_free);
-				if (err != NET_XMIT_SUCCESS &&
-				    net_xmit_drop_count(err)) {
-					qdisc_qstats_drop(sch);
-					qdisc_tree_reduce_backlog(sch, 1,
-								  pkt_len);
+				if (err != NET_XMIT_SUCCESS) {
+					if (net_xmit_drop_count(err))
+						qdisc_qstats_drop(sch);
+					qdisc_tree_reduce_backlog(sch, 1, pkt_len);
 				}
 				goto tfifo_dequeue;
 			}

[PATCH 4.19 19/96] ALSA: hda/conexant: Add pincfg quirk to enable top speakers on Sirius devices

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christoffer Sandberg <cs@tuxedo.de>

commit 4178d78cd7a86510ba68d203f26fc01113c7f126 upstream.

The Sirius notebooks have two sets of speakers 0x17 (sides) and
0x1d (top center). The side speakers are active by default but
the top speakers aren't.

This patch provides a pincfg quirk to activate the top speakers.

Signed-off-by: Christoffer Sandberg <cs@tuxedo.de>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20240827102540.9480-1-wse@tuxedocomputers.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/pci/hda/patch_conexant.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -230,6 +230,7 @@ enum {
 	CXT_FIXUP_HEADSET_MIC,
 	CXT_FIXUP_HP_MIC_NO_PRESENCE,
 	CXT_PINCFG_SWS_JS201D,
+	CXT_PINCFG_TOP_SPEAKER,
 };
 
 /* for hda_fixup_thinkpad_acpi() */
@@ -884,6 +885,13 @@ static const struct hda_fixup cxt_fixups
 		.type = HDA_FIXUP_PINS,
 		.v.pins = cxt_pincfg_sws_js201d,
 	},
+	[CXT_PINCFG_TOP_SPEAKER] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x1d, 0x82170111 },
+			{ }
+		},
+	},
 };
 
 static const struct snd_pci_quirk cxt5045_fixups[] = {
@@ -978,6 +986,8 @@ static const struct snd_pci_quirk cxt506
 	SND_PCI_QUIRK_VENDOR(0x17aa, "Thinkpad", CXT_FIXUP_THINKPAD_ACPI),
 	SND_PCI_QUIRK(0x1c06, 0x2011, "Lemote A1004", CXT_PINCFG_LEMOTE_A1004),
 	SND_PCI_QUIRK(0x1c06, 0x2012, "Lemote A1205", CXT_PINCFG_LEMOTE_A1205),
+	SND_PCI_QUIRK(0x2782, 0x12c3, "Sirius Gen1", CXT_PINCFG_TOP_SPEAKER),
+	SND_PCI_QUIRK(0x2782, 0x12c5, "Sirius Gen2", CXT_PINCFG_TOP_SPEAKER),
 	{}
 };
 
@@ -996,6 +1006,7 @@ static const struct hda_model_fixup cxt5
 	{ .id = CXT_FIXUP_HP_MIC_NO_PRESENCE, .name = "hp-mic-fix" },
 	{ .id = CXT_PINCFG_LENOVO_NOTEBOOK, .name = "lenovo-20149" },
 	{ .id = CXT_PINCFG_SWS_JS201D, .name = "sws-js201d" },
+	{ .id = CXT_PINCFG_TOP_SPEAKER, .name = "sirius-top-speaker" },
 	{}
 };
 

[PATCH 4.19 20/96] ata: libata: Fix memory leak for error path in ata_host_alloc()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zheng Qixing <zhengqixing@huawei.com>

commit 284b75a3d83c7631586d98f6dede1d90f128f0db upstream.

In ata_host_alloc(), if devres_alloc() fails to allocate the device host
resource data pointer, the already allocated ata_host structure is not
freed before returning from the function. This results in a potential
memory leak.

Call kfree(host) before jumping to the error handling path to ensure
that the ata_host structure is properly freed if devres_alloc() fails.

Fixes: 2623c7a5f279 ("libata: add refcounting to ata_host")
Cc: stable@vger.kernel.org
Signed-off-by: Zheng Qixing <zhengqixing@huawei.com>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/ata/libata-core.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6221,8 +6221,10 @@ struct ata_host *ata_host_alloc(struct d
 	}
 
 	dr = devres_alloc(ata_devres_release, 0, GFP_KERNEL);
-	if (!dr)
+	if (!dr) {
+		kfree(host);
 		goto err_out;
+	}
 
 	devres_add(dev, dr);
 	dev_set_drvdata(dev, host);

[PATCH 4.19 21/96] mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sam Protsenko <semen.protsenko@linaro.org>

commit 8396c793ffdf28bb8aee7cfe0891080f8cab7890 upstream.

Commit 616f87661792 ("mmc: pass queue_limits to blk_mq_alloc_disk") [1]
revealed the long living issue in dw_mmc.c driver, existing since the
time when it was first introduced in commit f95f3850f7a9 ("mmc: dw_mmc:
Add Synopsys DesignWare mmc host driver."), also making kernel boot
broken on platforms using dw_mmc driver with 16K or 64K pages enabled,
with this message in dmesg:

    mmcblk: probe of mmc0:0001 failed with error -22

That's happening because mmc_blk_probe() fails when it calls
blk_validate_limits() consequently, which returns the error due to
failed max_segment_size check in this code:

    /*
     * The maximum segment size has an odd historic 64k default that
     * drivers probably should override.  Just like the I/O size we
     * require drivers to at least handle a full page per segment.
     */
    ...
    if (WARN_ON_ONCE(lim->max_segment_size < PAGE_SIZE))
        return -EINVAL;

In case when IDMAC (Internal DMA Controller) is used, dw_mmc.c always
sets .max_seg_size to 4 KiB:

    mmc->max_seg_size = 0x1000;

The comment in the code above explains why it's incorrect. Arnd
suggested setting .max_seg_size to .max_req_size to fix it, which is
also what some other drivers are doing:

   $ grep -rl 'max_seg_size.*=.*max_req_size' drivers/mmc/host/ | \
     wc -l
   18

This change is not only fixing the boot with 16K/64K pages, but also
leads to a better MMC performance. The linear write performance was
tested on E850-96 board (eMMC only), before commit [1] (where it's
possible to boot with 16K/64K pages without this fix, to be able to do
a comparison). It was tested with this command:

    # dd if=/dev/zero of=somefile bs=1M count=500 oflag=sync

Test results are as follows:

  - 4K pages,  .max_seg_size = 4 KiB:                   94.2 MB/s
  - 4K pages,  .max_seg_size = .max_req_size = 512 KiB: 96.9 MB/s
  - 16K pages, .max_seg_size = 4 KiB:                   126 MB/s
  - 16K pages, .max_seg_size = .max_req_size = 2 MiB:   128 MB/s
  - 64K pages, .max_seg_size = 4 KiB:                   138 MB/s
  - 64K pages, .max_seg_size = .max_req_size = 8 MiB:   138 MB/s

Unfortunately, SD card controller is not enabled in E850-96 yet, so it
wasn't possible for me to run the test on some cheap SD cards to check
this patch's impact on those. But it's possible that this change might
also reduce the writes count, thus improving SD/eMMC longevity.

All credit for the analysis and the suggested solution goes to Arnd.

[1] https://lore.kernel.org/all/20240215070300.2200308-18-hch@lst.de/

Fixes: f95f3850f7a9 ("mmc: dw_mmc: Add Synopsys DesignWare mmc host driver.")
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Closes: https://lore.kernel.org/all/CA+G9fYtddf2Fd3be+YShHP6CmSDNcn0ptW8qg+stUKW+Cn0rjQ@mail.gmail.com/
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240306232052.21317-1-semen.protsenko@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/mmc/host/dw_mmc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2857,8 +2857,8 @@ static int dw_mci_init_slot(struct dw_mc
 	if (host->use_dma == TRANS_MODE_IDMAC) {
 		mmc->max_segs = host->ring_size;
 		mmc->max_blk_size = 65535;
-		mmc->max_seg_size = 0x1000;
-		mmc->max_req_size = mmc->max_seg_size * host->ring_size;
+		mmc->max_req_size = DW_MCI_DESC_DATA_LENGTH * host->ring_size;
+		mmc->max_seg_size = mmc->max_req_size;
 		mmc->max_blk_count = mmc->max_req_size / 512;
 	} else if (host->use_dma == TRANS_MODE_EDMAC) {
 		mmc->max_segs = 64;

[PATCH 4.19 22/96] fuse: use unsigned type for getxattr/listxattr size truncation

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jann Horn <jannh@google.com>

commit b18915248a15eae7d901262f108d6ff0ffb4ffc1 upstream.

The existing code uses min_t(ssize_t, outarg.size, XATTR_LIST_MAX) when
parsing the FUSE daemon's response to a zero-length getxattr/listxattr
request.
On 32-bit kernels, where ssize_t and outarg.size are the same size, this is
wrong: The min_t() will pass through any size values that are negative when
interpreted as signed.
fuse_listxattr() will then return this userspace-supplied negative value,
which callers will treat as an error value.

This kind of bug pattern can lead to fairly bad security bugs because of
how error codes are used in the Linux kernel. If a caller were to convert
the numeric error into an error pointer, like so:

    struct foo *func(...) {
      int len = fuse_getxattr(..., NULL, 0);
      if (len < 0)
        return ERR_PTR(len);
      ...
    }

then it would end up returning this userspace-supplied negative value cast
to a pointer - but the caller of this function wouldn't recognize it as an
error pointer (IS_ERR_VALUE() only detects values in the narrow range in
which legitimate errno values are), and so it would just be treated as a
kernel pointer.

I think there is at least one theoretical codepath where this could happen,
but that path would involve virtio-fs with submounts plus some weird
SELinux configuration, so I think it's probably not a concern in practice.

Cc: stable@vger.kernel.org # v4.9
Fixes: 63401ccdb2ca ("fuse: limit xattr returned size")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/fuse/xattr.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/fs/fuse/xattr.c
+++ b/fs/fuse/xattr.c
@@ -79,7 +79,7 @@ ssize_t fuse_getxattr(struct inode *inod
 	}
 	ret = fuse_simple_request(fc, &args);
 	if (!ret && !size)
-		ret = min_t(ssize_t, outarg.size, XATTR_SIZE_MAX);
+		ret = min_t(size_t, outarg.size, XATTR_SIZE_MAX);
 	if (ret == -ENOSYS) {
 		fc->no_getxattr = 1;
 		ret = -EOPNOTSUPP;
@@ -141,7 +141,7 @@ ssize_t fuse_listxattr(struct dentry *en
 	}
 	ret = fuse_simple_request(fc, &args);
 	if (!ret && !size)
-		ret = min_t(ssize_t, outarg.size, XATTR_LIST_MAX);
+		ret = min_t(size_t, outarg.size, XATTR_LIST_MAX);
 	if (ret > 0 && size)
 		ret = fuse_verify_xattr_list(list, ret);
 	if (ret == -ENOSYS) {

[PATCH 4.19 23/96] clk: qcom: clk-alpha-pll: Fix the pll post div mask

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>

commit 2c4553e6c485a96b5d86989eb9654bf20e51e6dd upstream.

The PLL_POST_DIV_MASK should be 0 to (width - 1) bits. Fix it.

Fixes: 1c3541145cbf ("clk: qcom: support for 2 bit PLL post divider")
Cc: stable@vger.kernel.org
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
Link: https://lore.kernel.org/r/20240731062916.2680823-2-quic_skakitap@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/clk/qcom/clk-alpha-pll.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -37,7 +37,7 @@
 
 #define PLL_USER_CTL(p)		((p)->offset + (p)->regs[PLL_OFF_USER_CTL])
 # define PLL_POST_DIV_SHIFT	8
-# define PLL_POST_DIV_MASK(p)	GENMASK((p)->width, 0)
+# define PLL_POST_DIV_MASK(p)	GENMASK((p)->width - 1, 0)
 # define PLL_ALPHA_EN		BIT(24)
 # define PLL_ALPHA_MODE		BIT(25)
 # define PLL_VCO_SHIFT		20

[PATCH 4.19 24/96] nilfs2: fix missing cleanup on rollforward recovery error

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ryusuke Konishi <konishi.ryusuke@gmail.com>

commit 5787fcaab9eb5930f5378d6a1dd03d916d146622 upstream.

In an error injection test of a routine for mount-time recovery, KASAN
found a use-after-free bug.

It turned out that if data recovery was performed using partial logs
created by dsync writes, but an error occurred before starting the log
writer to create a recovered checkpoint, the inodes whose data had been
recovered were left in the ns_dirty_files list of the nilfs object and
were not freed.

Fix this issue by cleaning up inodes that have read the recovery data if
the recovery routine fails midway before the log writer starts.

Link: https://lkml.kernel.org/r/20240810065242.3701-1-konishi.ryusuke@gmail.com
Fixes: 0f3e1c7f23f8 ("nilfs2: recovery functions")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nilfs2/recovery.c |   35 +++++++++++++++++++++++++++++++++--
 1 file changed, 33 insertions(+), 2 deletions(-)

--- a/fs/nilfs2/recovery.c
+++ b/fs/nilfs2/recovery.c
@@ -709,6 +709,33 @@ static void nilfs_finish_roll_forward(st
 }
 
 /**
+ * nilfs_abort_roll_forward - cleaning up after a failed rollforward recovery
+ * @nilfs: nilfs object
+ */
+static void nilfs_abort_roll_forward(struct the_nilfs *nilfs)
+{
+	struct nilfs_inode_info *ii, *n;
+	LIST_HEAD(head);
+
+	/* Abandon inodes that have read recovery data */
+	spin_lock(&nilfs->ns_inode_lock);
+	list_splice_init(&nilfs->ns_dirty_files, &head);
+	spin_unlock(&nilfs->ns_inode_lock);
+	if (list_empty(&head))
+		return;
+
+	set_nilfs_purging(nilfs);
+	list_for_each_entry_safe(ii, n, &head, i_dirty) {
+		spin_lock(&nilfs->ns_inode_lock);
+		list_del_init(&ii->i_dirty);
+		spin_unlock(&nilfs->ns_inode_lock);
+
+		iput(&ii->vfs_inode);
+	}
+	clear_nilfs_purging(nilfs);
+}
+
+/**
  * nilfs_salvage_orphan_logs - salvage logs written after the latest checkpoint
  * @nilfs: nilfs object
  * @sb: super block instance
@@ -766,15 +793,19 @@ int nilfs_salvage_orphan_logs(struct the
 		if (unlikely(err)) {
 			nilfs_err(sb, "error %d writing segment for recovery",
 				  err);
-			goto failed;
+			goto put_root;
 		}
 
 		nilfs_finish_roll_forward(nilfs, ri);
 	}
 
- failed:
+put_root:
 	nilfs_put_root(root);
 	return err;
+
+failed:
+	nilfs_abort_roll_forward(nilfs);
+	goto put_root;
 }
 
 /**

[PATCH 4.19 25/96] nilfs2: fix state management in error path of log writing function

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ryusuke Konishi <konishi.ryusuke@gmail.com>

commit 6576dd6695f2afca3f4954029ac4a64f82ba60ab upstream.

After commit a694291a6211 ("nilfs2: separate wait function from
nilfs_segctor_write") was applied, the log writing function
nilfs_segctor_do_construct() was able to issue I/O requests continuously
even if user data blocks were split into multiple logs across segments,
but two potential flaws were introduced in its error handling.

First, if nilfs_segctor_begin_construction() fails while creating the
second or subsequent logs, the log writing function returns without
calling nilfs_segctor_abort_construction(), so the writeback flag set on
pages/folios will remain uncleared.  This causes page cache operations to
hang waiting for the writeback flag.  For example,
truncate_inode_pages_final(), which is called via nilfs_evict_inode() when
an inode is evicted from memory, will hang.

Second, the NILFS_I_COLLECTED flag set on normal inodes remain uncleared.
As a result, if the next log write involves checkpoint creation, that's
fine, but if a partial log write is performed that does not, inodes with
NILFS_I_COLLECTED set are erroneously removed from the "sc_dirty_files"
list, and their data and b-tree blocks may not be written to the device,
corrupting the block mapping.

Fix these issues by uniformly calling nilfs_segctor_abort_construction()
on failure of each step in the loop in nilfs_segctor_do_construct(),
having it clean up logs and segment usages according to progress, and
correcting the conditions for calling nilfs_redirty_inodes() to ensure
that the NILFS_I_COLLECTED flag is cleared.

Link: https://lkml.kernel.org/r/20240814101119.4070-1-konishi.ryusuke@gmail.com
Fixes: a694291a6211 ("nilfs2: separate wait function from nilfs_segctor_write")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/nilfs2/segment.c |   10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -1828,6 +1828,9 @@ static void nilfs_segctor_abort_construc
 	nilfs_abort_logs(&logs, ret ? : err);
 
 	list_splice_tail_init(&sci->sc_segbufs, &logs);
+	if (list_empty(&logs))
+		return; /* if the first segment buffer preparation failed */
+
 	nilfs_cancel_segusage(&logs, nilfs->ns_sufile);
 	nilfs_free_incomplete_logs(&logs, nilfs);
 
@@ -2072,7 +2075,7 @@ static int nilfs_segctor_do_construct(st
 
 		err = nilfs_segctor_begin_construction(sci, nilfs);
 		if (unlikely(err))
-			goto out;
+			goto failed;
 
 		/* Update time stamp */
 		sci->sc_seg_ctime = ktime_get_real_seconds();
@@ -2135,10 +2138,9 @@ static int nilfs_segctor_do_construct(st
 	return err;
 
  failed_to_write:
-	if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED)
-		nilfs_redirty_inodes(&sci->sc_dirty_files);
-
  failed:
+	if (mode == SC_LSEG_SR && nilfs_sc_cstage_get(sci) >= NILFS_ST_IFILE)
+		nilfs_redirty_inodes(&sci->sc_dirty_files);
 	if (nilfs_doing_gc())
 		nilfs_redirty_inodes(&sci->sc_gc_inodes);
 	nilfs_segctor_abort_construction(sci, nilfs, err);

[PATCH 4.19 26/96] ALSA: hda: Add input value sanity checks to HDMI channel map controls

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 6278056e42d953e207e2afd416be39d09ed2d496 ]

Add a simple sanity check to HD-audio HDMI Channel Map controls.
Although the value might not be accepted for the actual connection, we
can filter out some bogus values beforehand, and that should be enough
for making kselftest happier.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/20240616073454.16512-7-tiwai@suse.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/hda/hdmi_chmap.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/sound/hda/hdmi_chmap.c b/sound/hda/hdmi_chmap.c
index acbe61b8db7b..4463992d2102 100644
--- a/sound/hda/hdmi_chmap.c
+++ b/sound/hda/hdmi_chmap.c
@@ -752,6 +752,20 @@ static int hdmi_chmap_ctl_get(struct snd_kcontrol *kcontrol,
 	return 0;
 }
 
+/* a simple sanity check for input values to chmap kcontrol */
+static int chmap_value_check(struct hdac_chmap *hchmap,
+			     const struct snd_ctl_elem_value *ucontrol)
+{
+	int i;
+
+	for (i = 0; i < hchmap->channels_max; i++) {
+		if (ucontrol->value.integer.value[i] < 0 ||
+		    ucontrol->value.integer.value[i] > SNDRV_CHMAP_LAST)
+			return -EINVAL;
+	}
+	return 0;
+}
+
 static int hdmi_chmap_ctl_put(struct snd_kcontrol *kcontrol,
 			      struct snd_ctl_elem_value *ucontrol)
 {
@@ -763,6 +777,10 @@ static int hdmi_chmap_ctl_put(struct snd_kcontrol *kcontrol,
 	unsigned char chmap[8], per_pin_chmap[8];
 	int i, err, ca, prepared = 0;
 
+	err = chmap_value_check(hchmap, ucontrol);
+	if (err < 0)
+		return err;
+
 	/* No monitor is connected in dyn_pcm_assign.
 	 * It's invalid to setup the chmap
 	 */
-- 
2.43.0

[PATCH 4.19 27/96] smack: unix sockets: fix accept()ed socket label

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Konstantin Andreev <andreev@swemel.ru>

[ Upstream commit e86cac0acdb1a74f608bacefe702f2034133a047 ]

When a process accept()s connection from a unix socket
(either stream or seqpacket)
it gets the socket with the label of the connecting process.

For example, if a connecting process has a label 'foo',
the accept()ed socket will also have 'in' and 'out' labels 'foo',
regardless of the label of the listener process.

This is because kernel creates unix child sockets
in the context of the connecting process.

I do not see any obvious way for the listener to abuse
alien labels coming with the new socket, but,
to be on the safe side, it's better fix new socket labels.

Signed-off-by: Konstantin Andreev <andreev@swemel.ru>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 security/smack/smack_lsm.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 158f4df39be4..00d8e1b53b2a 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -3745,12 +3745,18 @@ static int smack_unix_stream_connect(struct sock *sock,
 		}
 	}
 
-	/*
-	 * Cross reference the peer labels for SO_PEERSEC.
-	 */
 	if (rc == 0) {
+		/*
+		 * Cross reference the peer labels for SO_PEERSEC.
+		 */
 		nsp->smk_packet = ssp->smk_out;
 		ssp->smk_packet = osp->smk_out;
+
+		/*
+		 * new/child/established socket must inherit listening socket labels
+		 */
+		nsp->smk_out = osp->smk_out;
+		nsp->smk_in  = osp->smk_in;
 	}
 
 	return rc;
-- 
2.43.0

[PATCH 4.19 28/96] irqchip/armada-370-xp: Do not allow mapping IRQ 0 and 1

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Pali Rohár <pali@kernel.org>

[ Upstream commit 3cef738208e5c3cb7084e208caf9bbf684f24feb ]

IRQs 0 (IPI) and 1 (MSI) are handled internally by this driver,
generic_handle_domain_irq() is never called for these IRQs.

Disallow mapping these IRQs.

[ Marek: changed commit message ]

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/irqchip/irq-armada-370-xp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 0fd428db3aa4..73c386aba368 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -346,6 +346,10 @@ static struct irq_chip armada_370_xp_irq_chip = {
 static int armada_370_xp_mpic_irq_map(struct irq_domain *h,
 				      unsigned int virq, irq_hw_number_t hw)
 {
+	/* IRQs 0 and 1 cannot be mapped, they are handled internally */
+	if (hw <= 1)
+		return -EINVAL;
+
 	armada_370_xp_irq_mask(irq_get_irq_data(virq));
 	if (!is_percpu_irq(hw))
 		writel(hw, per_cpu_int_base +
-- 
2.43.0

[PATCH 4.19 29/96] af_unix: Remove put_pid()/put_cred() in copy_peercred().

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kuniyuki Iwashima <kuniyu@amazon.com>

[ Upstream commit e4bd881d987121dbf1a288641491955a53d9f8f7 ]

When (AF_UNIX, SOCK_STREAM) socket connect()s to a listening socket,
the listener's sk_peer_pid/sk_peer_cred are copied to the client in
copy_peercred().

Then, the client's sk_peer_pid and sk_peer_cred are always NULL, so
we need not call put_pid() and put_cred() there.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/unix/af_unix.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index dfcafbb8cd0e..24fb6f00f597 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -610,9 +610,6 @@ static void init_peercred(struct sock *sk)
 
 static void copy_peercred(struct sock *sk, struct sock *peersk)
 {
-	const struct cred *old_cred;
-	struct pid *old_pid;
-
 	if (sk < peersk) {
 		spin_lock(&sk->sk_peer_lock);
 		spin_lock_nested(&peersk->sk_peer_lock, SINGLE_DEPTH_NESTING);
@@ -620,16 +617,12 @@ static void copy_peercred(struct sock *sk, struct sock *peersk)
 		spin_lock(&peersk->sk_peer_lock);
 		spin_lock_nested(&sk->sk_peer_lock, SINGLE_DEPTH_NESTING);
 	}
-	old_pid = sk->sk_peer_pid;
-	old_cred = sk->sk_peer_cred;
+
 	sk->sk_peer_pid  = get_pid(peersk->sk_peer_pid);
 	sk->sk_peer_cred = get_cred(peersk->sk_peer_cred);
 
 	spin_unlock(&sk->sk_peer_lock);
 	spin_unlock(&peersk->sk_peer_lock);
-
-	put_pid(old_pid);
-	put_cred(old_cred);
 }
 
 static int unix_listen(struct socket *sock, int backlog)
-- 
2.43.0

[PATCH 4.19 30/96] netfilter: nf_conncount: fix wrong variable type

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Yunjian Wang <wangyunjian@huawei.com>

[ Upstream commit 0b88d1654d556264bcd24a9cb6383f0888e30131 ]

Now there is a issue is that code checks reports a warning: implicit
narrowing conversion from type 'unsigned int' to small type 'u8' (the
'keylen' variable). Fix it by removing the 'keylen' variable.

Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/nf_conncount.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/net/netfilter/nf_conncount.c b/net/netfilter/nf_conncount.c
index 7554c56b2e63..d189ca7c2c02 100644
--- a/net/netfilter/nf_conncount.c
+++ b/net/netfilter/nf_conncount.c
@@ -309,7 +309,6 @@ insert_tree(struct net *net,
 	struct nf_conncount_rb *rbconn;
 	struct nf_conncount_tuple *conn;
 	unsigned int count = 0, gc_count = 0;
-	u8 keylen = data->keylen;
 	bool do_gc = true;
 
 	spin_lock_bh(&nf_conncount_locks[hash]);
@@ -321,7 +320,7 @@ insert_tree(struct net *net,
 		rbconn = rb_entry(*rbnode, struct nf_conncount_rb, node);
 
 		parent = *rbnode;
-		diff = key_diff(key, rbconn->key, keylen);
+		diff = key_diff(key, rbconn->key, data->keylen);
 		if (diff < 0) {
 			rbnode = &((*rbnode)->rb_left);
 		} else if (diff > 0) {
@@ -366,7 +365,7 @@ insert_tree(struct net *net,
 
 	conn->tuple = *tuple;
 	conn->zone = *zone;
-	memcpy(rbconn->key, key, sizeof(u32) * keylen);
+	memcpy(rbconn->key, key, sizeof(u32) * data->keylen);
 
 	nf_conncount_list_init(&rbconn->list);
 	list_add(&conn->node, &rbconn->list.head);
@@ -391,7 +390,6 @@ count_tree(struct net *net,
 	struct rb_node *parent;
 	struct nf_conncount_rb *rbconn;
 	unsigned int hash;
-	u8 keylen = data->keylen;
 
 	hash = jhash2(key, data->keylen, conncount_rnd) % CONNCOUNT_SLOTS;
 	root = &data->root[hash];
@@ -402,7 +400,7 @@ count_tree(struct net *net,
 
 		rbconn = rb_entry(parent, struct nf_conncount_rb, node);
 
-		diff = key_diff(key, rbconn->key, keylen);
+		diff = key_diff(key, rbconn->key, data->keylen);
 		if (diff < 0) {
 			parent = rcu_dereference_raw(parent->rb_left);
 		} else if (diff > 0) {
-- 
2.43.0

[PATCH 4.19 31/96] udf: Avoid excessive partition lengths

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jan Kara <jack@suse.cz>

[ Upstream commit ebbe26fd54a9621994bc16b14f2ba8f84c089693 ]

Avoid mounting filesystems where the partition would overflow the
32-bits used for block number. Also refuse to mount filesystems where
the partition length is so large we cannot safely index bits in a
block bitmap.

Link: https://patch.msgid.link/20240620130403.14731-1-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/udf/super.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 6273ffd312cc..22c76a33f6f3 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1054,12 +1054,19 @@ static int udf_fill_partdesc_info(struct super_block *sb,
 	struct udf_part_map *map;
 	struct udf_sb_info *sbi = UDF_SB(sb);
 	struct partitionHeaderDesc *phd;
+	u32 sum;
 	int err;
 
 	map = &sbi->s_partmaps[p_index];
 
 	map->s_partition_len = le32_to_cpu(p->partitionLength); /* blocks */
 	map->s_partition_root = le32_to_cpu(p->partitionStartingLocation);
+	if (check_add_overflow(map->s_partition_root, map->s_partition_len,
+			       &sum)) {
+		udf_err(sb, "Partition %d has invalid location %u + %u\n",
+			p_index, map->s_partition_root, map->s_partition_len);
+		return -EFSCORRUPTED;
+	}
 
 	if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
 		map->s_partition_flags |= UDF_PART_FLAG_READ_ONLY;
@@ -1115,6 +1122,14 @@ static int udf_fill_partdesc_info(struct super_block *sb,
 		bitmap->s_extPosition = le32_to_cpu(
 				phd->unallocSpaceBitmap.extPosition);
 		map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
+		/* Check whether math over bitmap won't overflow. */
+		if (check_add_overflow(map->s_partition_len,
+				       sizeof(struct spaceBitmapDesc) << 3,
+				       &sum)) {
+			udf_err(sb, "Partition %d is too long (%u)\n", p_index,
+				map->s_partition_len);
+			return -EFSCORRUPTED;
+		}
 		udf_debug("unallocSpaceBitmap (part %d) @ %u\n",
 			  p_index, bitmap->s_extPosition);
 	}
-- 
2.43.0

[PATCH 4.19 32/96] wifi: brcmsmac: advertise MFP_CAPABLE to enable WPA3

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arend van Spriel <arend.vanspriel@broadcom.com>

[ Upstream commit dbb5265a5d7cca1cdba7736dba313ab7d07bc19d ]

After being asked about support for WPA3 for BCM43224 chipset it
was found that all it takes is setting the MFP_CAPABLE flag and
mac80211 will take care of all that is needed [1].

Link: https://lore.kernel.org/linux-wireless/20200526155909.5807-2-Larry.Finger@lwfinger.net/ [1]
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Tested-by: Reijer Boekhoff <reijerboekhoff@protonmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/20240617122609.349582-1-arend.vanspriel@broadcom.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c
index 288d4d4d4454..eb735b054790 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c
@@ -1091,6 +1091,7 @@ static int ieee_hw_init(struct ieee80211_hw *hw)
 	ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 	ieee80211_hw_set(hw, SIGNAL_DBM);
 	ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
+	ieee80211_hw_set(hw, MFP_CAPABLE);
 
 	hw->extra_tx_headroom = brcms_c_get_header_len();
 	hw->queues = N_TX_QUEUES;
-- 
2.43.0

[PATCH 4.19 33/96] media: qcom: camss: Add check for v4l2_fwnode_endpoint_parse

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chen Ni <nichen@iscas.ac.cn>

[ Upstream commit 4caf6d93d9f2c11d6441c64e1c549c445fa322ed ]

Add check for the return value of v4l2_fwnode_endpoint_parse() and
return the error if it fails in order to catch the error.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/platform/qcom/camss/camss.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index 669615fff6a0..0fc7951640e2 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -431,8 +431,11 @@ static int camss_of_parse_endpoint_node(struct device *dev,
 	struct v4l2_fwnode_bus_mipi_csi2 *mipi_csi2;
 	struct v4l2_fwnode_endpoint vep = { { 0 } };
 	unsigned int i;
+	int ret;
 
-	v4l2_fwnode_endpoint_parse(of_fwnode_handle(node), &vep);
+	ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(node), &vep);
+	if (ret)
+		return ret;
 
 	csd->interface.csiphy_id = vep.base.port;
 
-- 
2.43.0

[PATCH 4.19 34/96] pcmcia: Use resource_size function on resource object

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jules Irenge <jbi.octave@gmail.com>

[ Upstream commit 24a025497e7e883bd2adef5d0ece1e9b9268009f ]

Cocinnele reports a warning

WARNING: Suspicious code. resource_size is maybe missing with root

The root cause is the function resource_size is not used when needed

Use resource_size() on variable "root" of type resource

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pcmcia/yenta_socket.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
index ac6a3f46b1e6..738660002ef3 100644
--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -636,11 +636,11 @@ static int yenta_search_one_res(struct resource *root, struct resource *res,
 		start = PCIBIOS_MIN_CARDBUS_IO;
 		end = ~0U;
 	} else {
-		unsigned long avail = root->end - root->start;
+		unsigned long avail = resource_size(root);
 		int i;
 		size = BRIDGE_MEM_MAX;
-		if (size > avail/8) {
-			size = (avail+1)/8;
+		if (size > (avail - 1) / 8) {
+			size = avail / 8;
 			/* round size down to next power of 2 */
 			i = 0;
 			while ((size /= 2) != 0)
-- 
2.43.0

[PATCH 4.19 35/96] can: bcm: Remove proc entry when dev is unregistered.

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kuniyuki Iwashima <kuniyu@amazon.com>

[ Upstream commit 76fe372ccb81b0c89b6cd2fec26e2f38c958be85 ]

syzkaller reported a warning in bcm_connect() below. [0]

The repro calls connect() to vxcan1, removes vxcan1, and calls
connect() with ifindex == 0.

Calling connect() for a BCM socket allocates a proc entry.
Then, bcm_sk(sk)->bound is set to 1 to prevent further connect().

However, removing the bound device resets bcm_sk(sk)->bound to 0
in bcm_notify().

The 2nd connect() tries to allocate a proc entry with the same
name and sets NULL to bcm_sk(sk)->bcm_proc_read, leaking the
original proc entry.

Since the proc entry is available only for connect()ed sockets,
let's clean up the entry when the bound netdev is unregistered.

[0]:
proc_dir_entry 'can-bcm/2456' already registered
WARNING: CPU: 1 PID: 394 at fs/proc/generic.c:376 proc_register+0x645/0x8f0 fs/proc/generic.c:375
Modules linked in:
CPU: 1 PID: 394 Comm: syz-executor403 Not tainted 6.10.0-rc7-g852e42cc2dd4
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
RIP: 0010:proc_register+0x645/0x8f0 fs/proc/generic.c:375
Code: 00 00 00 00 00 48 85 ed 0f 85 97 02 00 00 4d 85 f6 0f 85 9f 02 00 00 48 c7 c7 9b cb cf 87 48 89 de 4c 89 fa e8 1c 6f eb fe 90 <0f> 0b 90 90 48 c7 c7 98 37 99 89 e8 cb 7e 22 05 bb 00 00 00 10 48
RSP: 0018:ffa0000000cd7c30 EFLAGS: 00010246
RAX: 9e129be1950f0200 RBX: ff1100011b51582c RCX: ff1100011857cd80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffd400000000000f R09: ff1100013e78cac0
R10: ffac800000cd7980 R11: ff1100013e12b1f0 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ff1100011a99a2ec
FS:  00007fbd7086f740(0000) GS:ff1100013fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200071c0 CR3: 0000000118556004 CR4: 0000000000771ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
 <TASK>
 proc_create_net_single+0x144/0x210 fs/proc/proc_net.c:220
 bcm_connect+0x472/0x840 net/can/bcm.c:1673
 __sys_connect_file net/socket.c:2049 [inline]
 __sys_connect+0x5d2/0x690 net/socket.c:2066
 __do_sys_connect net/socket.c:2076 [inline]
 __se_sys_connect net/socket.c:2073 [inline]
 __x64_sys_connect+0x8f/0x100 net/socket.c:2073
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x4b/0x53
RIP: 0033:0x7fbd708b0e5d
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 9f 1b 00 f7 d8 64 89 01 48
RSP: 002b:00007fff8cd33f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fbd708b0e5d
RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000040 R09: 0000000000000040
R10: 0000000000000040 R11: 0000000000000246 R12: 00007fff8cd34098
R13: 0000000000401280 R14: 0000000000406de8 R15: 00007fbd70ab9000
 </TASK>
remove_proc_entry: removing non-empty directory 'net/can-bcm', leaking at least '2456'

Fixes: ffd980f976e7 ("[CAN]: Add broadcast manager (bcm) protocol")
Reported-by: syzkaller <syzkaller@googlegroups.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/all/20240722192842.37421-1-kuniyu@amazon.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/can/bcm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/can/bcm.c b/net/can/bcm.c
index 1c9953c68f09..095f68536c14 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1422,6 +1422,10 @@ static void bcm_notify(struct bcm_sock *bo, unsigned long msg,
 
 		/* remove device reference, if this is our bound device */
 		if (bo->bound && bo->ifindex == dev->ifindex) {
+#if IS_ENABLED(CONFIG_PROC_FS)
+			if (sock_net(sk)->can.bcmproc_dir && bo->bcm_proc_read)
+				remove_proc_entry(bo->procname, sock_net(sk)->can.bcmproc_dir);
+#endif
 			bo->bound   = 0;
 			bo->ifindex = 0;
 			notify_enodev = 1;
-- 
2.43.0

[PATCH 4.19 36/96] igb: Fix not clearing TimeSync interrupts for 82580

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Daiwei Li <daiweili@google.com>

[ Upstream commit ba8cf80724dbc09825b52498e4efacb563935408 ]

82580 NICs have a hardware bug that makes it
necessary to write into the TSICR (TimeSync Interrupt Cause) register
to clear it:
https://lore.kernel.org/all/CDCB8BE0.1EC2C%25matthew.vick@intel.com/

Add a conditional so only for 82580 we write into the TSICR register,
so we don't risk losing events for other models.

Without this change, when running ptp4l with an Intel 82580 card,
I get the following output:

> timed out while polling for tx timestamp increasing tx_timestamp_timeout or
> increasing kworker priority may correct this issue, but a driver bug likely
> causes it

This goes away with this change.

This (partially) reverts commit ee14cc9ea19b ("igb: Fix missing time sync events").

Fixes: ee14cc9ea19b ("igb: Fix missing time sync events")
Closes: https://lore.kernel.org/intel-wired-lan/CAN0jFd1kO0MMtOh8N2Ztxn6f7vvDKp2h507sMryobkBKe=xk=w@mail.gmail.com/
Tested-by: Daiwei Li <daiweili@google.com>
Suggested-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Daiwei Li <daiweili@google.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/intel/igb/igb_main.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 5d8d5915bc27..01138fc93ea1 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -6554,10 +6554,20 @@ static void igb_extts(struct igb_adapter *adapter, int tsintr_tt)
 
 static void igb_tsync_interrupt(struct igb_adapter *adapter)
 {
+	const u32 mask = (TSINTR_SYS_WRAP | E1000_TSICR_TXTS |
+			  TSINTR_TT0 | TSINTR_TT1 |
+			  TSINTR_AUTT0 | TSINTR_AUTT1);
 	struct e1000_hw *hw = &adapter->hw;
 	u32 tsicr = rd32(E1000_TSICR);
 	struct ptp_clock_event event;
 
+	if (hw->mac.type == e1000_82580) {
+		/* 82580 has a hardware bug that requires an explicit
+		 * write to clear the TimeSync interrupt cause.
+		 */
+		wr32(E1000_TSICR, tsicr & mask);
+	}
+
 	if (tsicr & TSINTR_SYS_WRAP) {
 		event.type = PTP_CLOCK_PPS;
 		if (adapter->ptp_caps.pps)
-- 
2.43.0

[PATCH 4.19 37/96] platform/x86: dell-smbios: Fix error path in dell_smbios_init()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Aleksandr Mishin <amishin@t-argos.ru>

[ Upstream commit ffc17e1479e8e9459b7afa80e5d9d40d0dd78abb ]

In case of error in build_tokens_sysfs(), all the memory that has been
allocated is freed at end of this function. But then free_group() is
called which performs memory deallocation again.

Also, instead of free_group() call, there should be exit_dell_smbios_smm()
and exit_dell_smbios_wmi() calls, since there is initialization, but there
is no release of resources in case of an error.

Fix these issues by replacing free_group() call with
exit_dell_smbios_wmi() and exit_dell_smbios_smm().

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 33b9ca1e53b4 ("platform/x86: dell-smbios: Add a sysfs interface for SMBIOS tokens")
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Link: https://lore.kernel.org/r/20240830065428.9544-1-amishin@t-argos.ru
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/platform/x86/dell-smbios-base.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/dell-smbios-base.c b/drivers/platform/x86/dell-smbios-base.c
index 9e9fc5155789..f5299edb83f5 100644
--- a/drivers/platform/x86/dell-smbios-base.c
+++ b/drivers/platform/x86/dell-smbios-base.c
@@ -613,7 +613,10 @@ static int __init dell_smbios_init(void)
 	return 0;
 
 fail_sysfs:
-	free_group(platform_device);
+	if (!wmi)
+		exit_dell_smbios_wmi();
+	if (!smm)
+		exit_dell_smbios_smm();
 
 fail_create_group:
 	platform_device_del(platform_device);
-- 
2.43.0

[PATCH 4.19 38/96] cx82310_eth: re-enable ethernet mode after router reboot

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ondrej Zary <linux@zary.sk>

[ Upstream commit ca139d76b0d9e59d18f2d2ec8f0d81b82acd6808 ]

When the router is rebooted without a power cycle, the USB device
remains connected but its configuration is reset. This results in
a non-working ethernet connection with messages like this in syslog:
	usb 2-2: RX packet too long: 65535 B

Re-enable ethernet mode when receiving a packet with invalid size of
0xffff.

Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: bab8eb0dd4cb ("usbnet: modern method to get random MAC")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/cx82310_eth.c | 50 ++++++++++++++++++++++++++++++-----
 1 file changed, 44 insertions(+), 6 deletions(-)

diff --git a/drivers/net/usb/cx82310_eth.c b/drivers/net/usb/cx82310_eth.c
index dfbdea22fbad..6a9a5e540b09 100644
--- a/drivers/net/usb/cx82310_eth.c
+++ b/drivers/net/usb/cx82310_eth.c
@@ -52,6 +52,11 @@ enum cx82310_status {
 #define CX82310_MTU	1514
 #define CMD_EP		0x01
 
+struct cx82310_priv {
+	struct work_struct reenable_work;
+	struct usbnet *dev;
+};
+
 /*
  * execute control command
  *  - optionally send some data (command parameters)
@@ -127,6 +132,23 @@ static int cx82310_cmd(struct usbnet *dev, enum cx82310_cmd cmd, bool reply,
 	return ret;
 }
 
+static int cx82310_enable_ethernet(struct usbnet *dev)
+{
+	int ret = cx82310_cmd(dev, CMD_ETHERNET_MODE, true, "\x01", 1, NULL, 0);
+
+	if (ret)
+		netdev_err(dev->net, "unable to enable ethernet mode: %d\n",
+			   ret);
+	return ret;
+}
+
+static void cx82310_reenable_work(struct work_struct *work)
+{
+	struct cx82310_priv *priv = container_of(work, struct cx82310_priv,
+						 reenable_work);
+	cx82310_enable_ethernet(priv->dev);
+}
+
 #define partial_len	data[0]		/* length of partial packet data */
 #define partial_rem	data[1]		/* remaining (missing) data length */
 #define partial_data	data[2]		/* partial packet data */
@@ -138,6 +160,7 @@ static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf)
 	struct usb_device *udev = dev->udev;
 	u8 link[3];
 	int timeout = 50;
+	struct cx82310_priv *priv;
 
 	/* avoid ADSL modems - continue only if iProduct is "USB NET CARD" */
 	if (usb_string(udev, udev->descriptor.iProduct, buf, sizeof(buf)) > 0
@@ -164,6 +187,15 @@ static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf)
 	if (!dev->partial_data)
 		return -ENOMEM;
 
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (!priv) {
+		ret = -ENOMEM;
+		goto err_partial;
+	}
+	dev->driver_priv = priv;
+	INIT_WORK(&priv->reenable_work, cx82310_reenable_work);
+	priv->dev = dev;
+
 	/* wait for firmware to become ready (indicated by the link being up) */
 	while (--timeout) {
 		ret = cx82310_cmd(dev, CMD_GET_LINK_STATUS, true, NULL, 0,
@@ -180,12 +212,8 @@ static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf)
 	}
 
 	/* enable ethernet mode (?) */
-	ret = cx82310_cmd(dev, CMD_ETHERNET_MODE, true, "\x01", 1, NULL, 0);
-	if (ret) {
-		dev_err(&udev->dev, "unable to enable ethernet mode: %d\n",
-			ret);
+	if (cx82310_enable_ethernet(dev))
 		goto err;
-	}
 
 	/* get the MAC address */
 	ret = cx82310_cmd(dev, CMD_GET_MAC_ADDR, true, NULL, 0,
@@ -202,13 +230,19 @@ static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf)
 
 	return 0;
 err:
+	kfree(dev->driver_priv);
+err_partial:
 	kfree((void *)dev->partial_data);
 	return ret;
 }
 
 static void cx82310_unbind(struct usbnet *dev, struct usb_interface *intf)
 {
+	struct cx82310_priv *priv = dev->driver_priv;
+
 	kfree((void *)dev->partial_data);
+	cancel_work_sync(&priv->reenable_work);
+	kfree(dev->driver_priv);
 }
 
 /*
@@ -223,6 +257,7 @@ static int cx82310_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 {
 	int len;
 	struct sk_buff *skb2;
+	struct cx82310_priv *priv = dev->driver_priv;
 
 	/*
 	 * If the last skb ended with an incomplete packet, this skb contains
@@ -257,7 +292,10 @@ static int cx82310_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 			break;
 		}
 
-		if (len > CX82310_MTU) {
+		if (len == 0xffff) {
+			netdev_info(dev->net, "router was rebooted, re-enabling ethernet mode");
+			schedule_work(&priv->reenable_work);
+		} else if (len > CX82310_MTU) {
 			dev_err(&dev->udev->dev, "RX packet too long: %d B\n",
 				len);
 			return 0;
-- 
2.43.0

[PATCH 4.19 39/96] drivers/net/usb: Remove all strcpy() uses

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Len Baker <len.baker@gmx.com>

[ Upstream commit 493c3ca6bd754d8587604496eb814f72e933075d ]

strcpy() performs no bounds checking on the destination buffer. This
could result in linear overflows beyond the end of the buffer, leading
to all kinds of misbehaviors. The safe replacement is strscpy().

Signed-off-by: Len Baker <len.baker@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: bab8eb0dd4cb ("usbnet: modern method to get random MAC")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/ipheth.c | 2 +-
 drivers/net/usb/usbnet.c | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c
index cea005cc7b2a..5e8fd2aa1888 100644
--- a/drivers/net/usb/ipheth.c
+++ b/drivers/net/usb/ipheth.c
@@ -497,7 +497,7 @@ static int ipheth_probe(struct usb_interface *intf,
 
 	netdev->netdev_ops = &ipheth_netdev_ops;
 	netdev->watchdog_timeo = IPHETH_TX_TIMEOUT;
-	strcpy(netdev->name, "eth%d");
+	strscpy(netdev->name, "eth%d", sizeof(netdev->name));
 
 	dev = netdev_priv(netdev);
 	dev->udev = udev;
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index f7f037b399a7..8065af844410 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -1722,7 +1722,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 	dev->interrupt_count = 0;
 
 	dev->net = net;
-	strcpy (net->name, "usb%d");
+	strscpy(net->name, "usb%d", sizeof(net->name));
 	memcpy (net->dev_addr, node_id, sizeof node_id);
 
 	/* rx and tx sides can use different message sizes;
@@ -1749,13 +1749,13 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 		if ((dev->driver_info->flags & FLAG_ETHER) != 0 &&
 		    ((dev->driver_info->flags & FLAG_POINTTOPOINT) == 0 ||
 		     (net->dev_addr [0] & 0x02) == 0))
-			strcpy (net->name, "eth%d");
+			strscpy(net->name, "eth%d", sizeof(net->name));
 		/* WLAN devices should always be named "wlan%d" */
 		if ((dev->driver_info->flags & FLAG_WLAN) != 0)
-			strcpy(net->name, "wlan%d");
+			strscpy(net->name, "wlan%d", sizeof(net->name));
 		/* WWAN devices should always be named "wwan%d" */
 		if ((dev->driver_info->flags & FLAG_WWAN) != 0)
-			strcpy(net->name, "wwan%d");
+			strscpy(net->name, "wwan%d", sizeof(net->name));
 
 		/* devices that cannot do ARP */
 		if ((dev->driver_info->flags & FLAG_NOARP) != 0)
-- 
2.43.0

[PATCH 4.19 40/96] net: usb: dont write directly to netdev->dev_addr

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jakub Kicinski <kuba@kernel.org>

[ Upstream commit 2674e7ea22ba0e22a2d1603bd51e0b8f6442a267 ]

Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

Manually fix all net/usb drivers without separate maintainers.

v2: catc does DMA to the buffer, leave the conversion to Oliver

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: bab8eb0dd4cb ("usbnet: modern method to get random MAC")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/ch9200.c      | 4 +++-
 drivers/net/usb/cx82310_eth.c | 5 +++--
 drivers/net/usb/kaweth.c      | 3 +--
 drivers/net/usb/mcs7830.c     | 4 +++-
 drivers/net/usb/sierra_net.c  | 6 ++++--
 drivers/net/usb/sr9700.c      | 4 +++-
 drivers/net/usb/sr9800.c      | 5 +++--
 drivers/net/usb/usbnet.c      | 6 ++++--
 8 files changed, 24 insertions(+), 13 deletions(-)

diff --git a/drivers/net/usb/ch9200.c b/drivers/net/usb/ch9200.c
index 9df3c1ffff35..6ed8da85b081 100644
--- a/drivers/net/usb/ch9200.c
+++ b/drivers/net/usb/ch9200.c
@@ -338,6 +338,7 @@ static int ch9200_bind(struct usbnet *dev, struct usb_interface *intf)
 {
 	int retval = 0;
 	unsigned char data[2];
+	u8 addr[ETH_ALEN];
 
 	retval = usbnet_get_endpoints(dev, intf);
 	if (retval)
@@ -385,7 +386,8 @@ static int ch9200_bind(struct usbnet *dev, struct usb_interface *intf)
 	retval = control_write(dev, REQUEST_WRITE, 0, MAC_REG_CTRL, data, 0x02,
 			       CONTROL_TIMEOUT_MS);
 
-	retval = get_mac_address(dev, dev->net->dev_addr);
+	retval = get_mac_address(dev, addr);
+	eth_hw_addr_set(dev->net, addr);
 
 	return retval;
 }
diff --git a/drivers/net/usb/cx82310_eth.c b/drivers/net/usb/cx82310_eth.c
index 6a9a5e540b09..2efa33eb1f73 100644
--- a/drivers/net/usb/cx82310_eth.c
+++ b/drivers/net/usb/cx82310_eth.c
@@ -161,6 +161,7 @@ static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf)
 	u8 link[3];
 	int timeout = 50;
 	struct cx82310_priv *priv;
+	u8 addr[ETH_ALEN];
 
 	/* avoid ADSL modems - continue only if iProduct is "USB NET CARD" */
 	if (usb_string(udev, udev->descriptor.iProduct, buf, sizeof(buf)) > 0
@@ -216,12 +217,12 @@ static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf)
 		goto err;
 
 	/* get the MAC address */
-	ret = cx82310_cmd(dev, CMD_GET_MAC_ADDR, true, NULL, 0,
-			  dev->net->dev_addr, ETH_ALEN);
+	ret = cx82310_cmd(dev, CMD_GET_MAC_ADDR, true, NULL, 0, addr, ETH_ALEN);
 	if (ret) {
 		dev_err(&udev->dev, "unable to read MAC address: %d\n", ret);
 		goto err;
 	}
+	eth_hw_addr_set(dev->net, addr);
 
 	/* start (does not seem to have any effect?) */
 	ret = cx82310_cmd(dev, CMD_START, false, NULL, 0, NULL, 0);
diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c
index 913e50bab0a2..b05154fad3ce 100644
--- a/drivers/net/usb/kaweth.c
+++ b/drivers/net/usb/kaweth.c
@@ -1139,8 +1139,7 @@ static int kaweth_probe(
 		goto err_all_but_rxbuf;
 
 	memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
-	memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
-               sizeof(kaweth->configuration.hw_addr));
+	eth_hw_addr_set(netdev, (u8 *)&kaweth->configuration.hw_addr);
 
 	netdev->netdev_ops = &kaweth_netdev_ops;
 	netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
diff --git a/drivers/net/usb/mcs7830.c b/drivers/net/usb/mcs7830.c
index c0f52a622964..c304ce4abaa4 100644
--- a/drivers/net/usb/mcs7830.c
+++ b/drivers/net/usb/mcs7830.c
@@ -493,17 +493,19 @@ static const struct net_device_ops mcs7830_netdev_ops = {
 static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
 {
 	struct net_device *net = dev->net;
+	u8 addr[ETH_ALEN];
 	int ret;
 	int retry;
 
 	/* Initial startup: Gather MAC address setting from EEPROM */
 	ret = -EINVAL;
 	for (retry = 0; retry < 5 && ret; retry++)
-		ret = mcs7830_hif_get_mac_address(dev, net->dev_addr);
+		ret = mcs7830_hif_get_mac_address(dev, addr);
 	if (ret) {
 		dev_warn(&dev->udev->dev, "Cannot read MAC address\n");
 		goto out;
 	}
+	eth_hw_addr_set(net, addr);
 
 	mcs7830_data_set_multicast(net);
 
diff --git a/drivers/net/usb/sierra_net.c b/drivers/net/usb/sierra_net.c
index c43087e06696..4226ad0f11f3 100644
--- a/drivers/net/usb/sierra_net.c
+++ b/drivers/net/usb/sierra_net.c
@@ -686,6 +686,7 @@ static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf)
 		0x00, 0x00, SIERRA_NET_HIP_MSYNC_ID, 0x00};
 	static const u8 shdwn_tmplate[sizeof(priv->shdwn_msg)] = {
 		0x00, 0x00, SIERRA_NET_HIP_SHUTD_ID, 0x00};
+	u8 mod[2];
 
 	dev_dbg(&dev->udev->dev, "%s", __func__);
 
@@ -715,8 +716,9 @@ static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf)
 	dev->net->netdev_ops = &sierra_net_device_ops;
 
 	/* change MAC addr to include, ifacenum, and to be unique */
-	dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return(&iface_counter);
-	dev->net->dev_addr[ETH_ALEN-1] = ifacenum;
+	mod[0] = atomic_inc_return(&iface_counter);
+	mod[1] = ifacenum;
+	dev_addr_mod(dev->net, ETH_ALEN - 2, mod, 2);
 
 	/* prepare shutdown message template */
 	memcpy(priv->shdwn_msg, shdwn_tmplate, sizeof(priv->shdwn_msg));
diff --git a/drivers/net/usb/sr9700.c b/drivers/net/usb/sr9700.c
index 1f11c56ccd5c..1f4b2fabb5e6 100644
--- a/drivers/net/usb/sr9700.c
+++ b/drivers/net/usb/sr9700.c
@@ -326,6 +326,7 @@ static int sr9700_bind(struct usbnet *dev, struct usb_interface *intf)
 {
 	struct net_device *netdev;
 	struct mii_if_info *mii;
+	u8 addr[ETH_ALEN];
 	int ret;
 
 	ret = usbnet_get_endpoints(dev, intf);
@@ -356,11 +357,12 @@ static int sr9700_bind(struct usbnet *dev, struct usb_interface *intf)
 	 * EEPROM automatically to PAR. In case there is no EEPROM externally,
 	 * a default MAC address is stored in PAR for making chip work properly.
 	 */
-	if (sr_read(dev, SR_PAR, ETH_ALEN, netdev->dev_addr) < 0) {
+	if (sr_read(dev, SR_PAR, ETH_ALEN, addr) < 0) {
 		netdev_err(netdev, "Error reading MAC address\n");
 		ret = -ENODEV;
 		goto out;
 	}
+	eth_hw_addr_set(netdev, addr);
 
 	/* power up and reset phy */
 	sr_write_reg(dev, SR_PRR, PRR_PHY_RST);
diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c
index a5ff7df10505..485a50d9f281 100644
--- a/drivers/net/usb/sr9800.c
+++ b/drivers/net/usb/sr9800.c
@@ -732,6 +732,7 @@ static int sr9800_bind(struct usbnet *dev, struct usb_interface *intf)
 	struct sr_data *data = (struct sr_data *)&dev->data;
 	u16 led01_mux, led23_mux;
 	int ret, embd_phy;
+	u8 addr[ETH_ALEN];
 	u32 phyid;
 	u16 rx_ctl;
 
@@ -757,12 +758,12 @@ static int sr9800_bind(struct usbnet *dev, struct usb_interface *intf)
 	}
 
 	/* Get the MAC address */
-	ret = sr_read_cmd(dev, SR_CMD_READ_NODE_ID, 0, 0, ETH_ALEN,
-			  dev->net->dev_addr);
+	ret = sr_read_cmd(dev, SR_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, addr);
 	if (ret < 0) {
 		netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
 		return ret;
 	}
+	eth_hw_addr_set(dev->net, addr);
 	netdev_dbg(dev->net, "mac addr : %pM\n", dev->net->dev_addr);
 
 	/* Initialize MII structure */
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 8065af844410..16225654d88c 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -163,12 +163,13 @@ EXPORT_SYMBOL_GPL(usbnet_get_endpoints);
 
 int usbnet_get_ethernet_addr(struct usbnet *dev, int iMACAddress)
 {
+	u8		addr[ETH_ALEN];
 	int 		tmp = -1, ret;
 	unsigned char	buf [13];
 
 	ret = usb_string(dev->udev, iMACAddress, buf, sizeof buf);
 	if (ret == 12)
-		tmp = hex2bin(dev->net->dev_addr, buf, 6);
+		tmp = hex2bin(addr, buf, 6);
 	if (tmp < 0) {
 		dev_dbg(&dev->udev->dev,
 			"bad MAC string %d fetch, %d\n", iMACAddress, tmp);
@@ -176,6 +177,7 @@ int usbnet_get_ethernet_addr(struct usbnet *dev, int iMACAddress)
 			ret = -EINVAL;
 		return ret;
 	}
+	eth_hw_addr_set(dev->net, addr);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(usbnet_get_ethernet_addr);
@@ -1723,7 +1725,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 
 	dev->net = net;
 	strscpy(net->name, "usb%d", sizeof(net->name));
-	memcpy (net->dev_addr, node_id, sizeof node_id);
+	eth_hw_addr_set(net, node_id);
 
 	/* rx and tx sides can use different message sizes;
 	 * bind() should set rx_urb_size in that case.
-- 
2.43.0

[PATCH 4.19 41/96] usbnet: modern method to get random MAC

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Oliver Neukum <oneukum@suse.com>

[ Upstream commit bab8eb0dd4cb995caa4a0529d5655531c2ec5e8e ]

The driver generates a random MAC once on load
and uses it over and over, including on two devices
needing a random MAC at the same time.

Jakub suggested revamping the driver to the modern
API for setting a random MAC rather than fixing
the old stuff.

The bug is as old as the driver.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Link: https://patch.msgid.link/20240829175201.670718-1-oneukum@suse.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/usbnet.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 16225654d88c..938335f4738d 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -79,9 +79,6 @@
 
 /*-------------------------------------------------------------------------*/
 
-// randomly generated ethernet address
-static u8	node_id [ETH_ALEN];
-
 /* use ethtool to change the level for any given device */
 static int msg_level = -1;
 module_param (msg_level, int, 0);
@@ -1725,7 +1722,6 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 
 	dev->net = net;
 	strscpy(net->name, "usb%d", sizeof(net->name));
-	eth_hw_addr_set(net, node_id);
 
 	/* rx and tx sides can use different message sizes;
 	 * bind() should set rx_urb_size in that case.
@@ -1799,9 +1795,9 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 		goto out4;
 	}
 
-	/* let userspace know we have a random address */
-	if (ether_addr_equal(net->dev_addr, node_id))
-		net->addr_assign_type = NET_ADDR_RANDOM;
+	/* this flags the device for user space */
+	if (!is_valid_ether_addr(net->dev_addr))
+		eth_hw_addr_random(net);
 
 	if ((dev->driver_info->flags & FLAG_WLAN) != 0)
 		SET_NETDEV_DEVTYPE(net, &wlan_type);
@@ -2211,7 +2207,6 @@ static int __init usbnet_init(void)
 	BUILD_BUG_ON(
 		FIELD_SIZEOF(struct sk_buff, cb) < sizeof(struct skb_data));
 
-	eth_random_addr(node_id);
 	return 0;
 }
 module_init(usbnet_init);
-- 
2.43.0

[PATCH 4.19 42/96] rfkill: fix spelling mistake contidion to condition

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Richard Guy Briggs <rgb@redhat.com>

[ Upstream commit f404c3ecc401b3617c454c06a3d36a43a01f1aaf ]

This came about while trying to determine if there would be any pattern
match on contid, a new audit container identifier internal variable.
This was the only one.

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stable-dep-of: bee2ef946d31 ("net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/rfkill/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index d6467cbf5c4f..d138a2123d70 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -510,8 +510,8 @@ void rfkill_remove_epo_lock(void)
 /**
  * rfkill_is_epo_lock_active - returns true EPO is active
  *
- * Returns 0 (false) if there is NOT an active EPO contidion,
- * and 1 (true) if there is an active EPO contition, which
+ * Returns 0 (false) if there is NOT an active EPO condition,
+ * and 1 (true) if there is an active EPO condition, which
  * locks all radios in one of the BLOCKED states.
  *
  * Can be called in atomic context.
-- 
2.43.0

[PATCH 4.19 43/96] net: bridge: add support for sticky fdb entries

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

[ Upstream commit 435f2e7cc0b783615d7fbcf08f5f00d289f9caeb ]

Add support for entries which are "sticky", i.e. will not change their port
if they show up from a different one. A new ndm flag is introduced for that
purpose - NTF_STICKY. We allow to set it only to non-local entries.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: bee2ef946d31 ("net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/uapi/linux/neighbour.h |  1 +
 net/bridge/br_fdb.c            | 19 ++++++++++++++++---
 net/bridge/br_private.h        |  1 +
 3 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/include/uapi/linux/neighbour.h b/include/uapi/linux/neighbour.h
index 904db6148476..998155444e0d 100644
--- a/include/uapi/linux/neighbour.h
+++ b/include/uapi/linux/neighbour.h
@@ -43,6 +43,7 @@ enum {
 #define NTF_PROXY	0x08	/* == ATF_PUBL */
 #define NTF_EXT_LEARNED	0x10
 #define NTF_OFFLOADED   0x20
+#define NTF_STICKY	0x40
 #define NTF_ROUTER	0x80
 
 /*
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 4d4b9b5ea1c1..1714f4e91fca 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -584,7 +584,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 			unsigned long now = jiffies;
 
 			/* fastpath: update of existing entry */
-			if (unlikely(source != fdb->dst)) {
+			if (unlikely(source != fdb->dst && !fdb->is_sticky)) {
 				fdb->dst = source;
 				fdb_modified = true;
 				/* Take over HW learned entry */
@@ -656,6 +656,8 @@ static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
 		ndm->ndm_flags |= NTF_OFFLOADED;
 	if (fdb->added_by_external_learn)
 		ndm->ndm_flags |= NTF_EXT_LEARNED;
+	if (fdb->is_sticky)
+		ndm->ndm_flags |= NTF_STICKY;
 
 	if (nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->key.addr))
 		goto nla_put_failure;
@@ -772,8 +774,10 @@ int br_fdb_dump(struct sk_buff *skb,
 
 /* Update (create or replace) forwarding database entry */
 static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
-			 const __u8 *addr, __u16 state, __u16 flags, __u16 vid)
+			 const u8 *addr, u16 state, u16 flags, u16 vid,
+			 u8 ndm_flags)
 {
+	u8 is_sticky = !!(ndm_flags & NTF_STICKY);
 	struct net_bridge_fdb_entry *fdb;
 	bool modified = false;
 
@@ -789,6 +793,9 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
 		return -EINVAL;
 	}
 
+	if (is_sticky && (state & NUD_PERMANENT))
+		return -EINVAL;
+
 	fdb = br_fdb_find(br, addr, vid);
 	if (fdb == NULL) {
 		if (!(flags & NLM_F_CREATE))
@@ -832,6 +839,12 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
 
 		modified = true;
 	}
+
+	if (is_sticky != fdb->is_sticky) {
+		fdb->is_sticky = is_sticky;
+		modified = true;
+	}
+
 	fdb->added_by_user = 1;
 
 	fdb->used = jiffies;
@@ -865,7 +878,7 @@ static int __br_fdb_add(struct ndmsg *ndm, struct net_bridge *br,
 	} else {
 		spin_lock_bh(&br->hash_lock);
 		err = fdb_add_entry(br, p, addr, ndm->ndm_state,
-				    nlh_flags, vid);
+				    nlh_flags, vid, ndm->ndm_flags);
 		spin_unlock_bh(&br->hash_lock);
 	}
 
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 7ca3b469242e..4e0c6f9d9c16 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -181,6 +181,7 @@ struct net_bridge_fdb_entry {
 	struct hlist_node		fdb_node;
 	unsigned char			is_local:1,
 					is_static:1,
+					is_sticky:1,
 					added_by_user:1,
 					added_by_external_learn:1,
 					offloaded:1;
-- 
2.43.0

[PATCH 4.19 44/96] bridge: switchdev: Allow clearing FDB entry offload indication

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ido Schimmel <idosch@mellanox.com>

[ Upstream commit e9ba0fbc7dd23a74e77960c98c988f59a1ff75aa ]

Currently, an FDB entry only ceases being offloaded when it is deleted.
This changes with VxLAN encapsulation.

Devices capable of performing VxLAN encapsulation usually have only one
FDB table, unlike the software data path which has two - one in the
bridge driver and another in the VxLAN driver.

Therefore, bridge FDB entries pointing to a VxLAN device are only
offloaded if there is a corresponding entry in the VxLAN FDB.

Allow clearing the offload indication in case the corresponding entry
was deleted from the VxLAN FDB.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: bee2ef946d31 ("net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 9 +++++----
 drivers/net/ethernet/rocker/rocker_main.c                | 1 +
 include/net/switchdev.h                                  | 3 ++-
 net/bridge/br.c                                          | 4 ++--
 net/bridge/br_fdb.c                                      | 4 ++--
 net/bridge/br_private.h                                  | 2 +-
 net/bridge/br_switchdev.c                                | 9 ++++++---
 net/dsa/slave.c                                          | 1 +
 8 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 8d556eb37b7a..c0c73b76f6c7 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -2072,12 +2072,13 @@ void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
 static void
 mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type,
 			    const char *mac, u16 vid,
-			    struct net_device *dev)
+			    struct net_device *dev, bool offloaded)
 {
 	struct switchdev_notifier_fdb_info info;
 
 	info.addr = mac;
 	info.vid = vid;
+	info.offloaded = offloaded;
 	call_switchdev_notifiers(type, dev, &info.info);
 }
 
@@ -2129,7 +2130,7 @@ static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
 	if (!do_notification)
 		return;
 	type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE;
-	mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev);
+	mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev, adding);
 
 	return;
 
@@ -2189,7 +2190,7 @@ static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
 	if (!do_notification)
 		return;
 	type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE;
-	mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev);
+	mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev, adding);
 
 	return;
 
@@ -2294,7 +2295,7 @@ static void mlxsw_sp_switchdev_event_work(struct work_struct *work)
 			break;
 		mlxsw_sp_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED,
 					    fdb_info->addr,
-					    fdb_info->vid, dev);
+					    fdb_info->vid, dev, true);
 		break;
 	case SWITCHDEV_FDB_DEL_TO_DEVICE:
 		fdb_info = &switchdev_work->fdb_info;
diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c
index b13ab4eee4c7..7d81de57b6f4 100644
--- a/drivers/net/ethernet/rocker/rocker_main.c
+++ b/drivers/net/ethernet/rocker/rocker_main.c
@@ -2728,6 +2728,7 @@ rocker_fdb_offload_notify(struct rocker_port *rocker_port,
 
 	info.addr = recv_info->addr;
 	info.vid = recv_info->vid;
+	info.offloaded = true;
 	call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED,
 				 rocker_port->dev, &info.info);
 }
diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index d574ce63bf22..435bb79925b2 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -155,7 +155,8 @@ struct switchdev_notifier_fdb_info {
 	struct switchdev_notifier_info info; /* must be first */
 	const unsigned char *addr;
 	u16 vid;
-	bool added_by_user;
+	u8 added_by_user:1,
+	   offloaded:1;
 };
 
 static inline struct net_device *
diff --git a/net/bridge/br.c b/net/bridge/br.c
index b0a0b82e2d91..a175f5557873 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -151,7 +151,7 @@ static int br_switchdev_event(struct notifier_block *unused,
 			break;
 		}
 		br_fdb_offloaded_set(br, p, fdb_info->addr,
-				     fdb_info->vid);
+				     fdb_info->vid, true);
 		break;
 	case SWITCHDEV_FDB_DEL_TO_BRIDGE:
 		fdb_info = ptr;
@@ -163,7 +163,7 @@ static int br_switchdev_event(struct notifier_block *unused,
 	case SWITCHDEV_FDB_OFFLOADED:
 		fdb_info = ptr;
 		br_fdb_offloaded_set(br, p, fdb_info->addr,
-				     fdb_info->vid);
+				     fdb_info->vid, fdb_info->offloaded);
 		break;
 	}
 
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 1714f4e91fca..a659e7c4ee43 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -1156,7 +1156,7 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 }
 
 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
-			  const unsigned char *addr, u16 vid)
+			  const unsigned char *addr, u16 vid, bool offloaded)
 {
 	struct net_bridge_fdb_entry *fdb;
 
@@ -1164,7 +1164,7 @@ void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
 
 	fdb = br_fdb_find(br, addr, vid);
 	if (fdb)
-		fdb->offloaded = 1;
+		fdb->offloaded = offloaded;
 
 	spin_unlock_bh(&br->hash_lock);
 }
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 4e0c6f9d9c16..f5e258ca3043 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -565,7 +565,7 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 			      const unsigned char *addr, u16 vid,
 			      bool swdev_notify);
 void br_fdb_offloaded_set(struct net_bridge *br, struct net_bridge_port *p,
-			  const unsigned char *addr, u16 vid);
+			  const unsigned char *addr, u16 vid, bool offloaded);
 
 /* br_forward.c */
 enum br_pkt_type {
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index d77f807420c4..b993df770675 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -103,7 +103,7 @@ int br_switchdev_set_port_flag(struct net_bridge_port *p,
 static void
 br_switchdev_fdb_call_notifiers(bool adding, const unsigned char *mac,
 				u16 vid, struct net_device *dev,
-				bool added_by_user)
+				bool added_by_user, bool offloaded)
 {
 	struct switchdev_notifier_fdb_info info;
 	unsigned long notifier_type;
@@ -111,6 +111,7 @@ br_switchdev_fdb_call_notifiers(bool adding, const unsigned char *mac,
 	info.addr = mac;
 	info.vid = vid;
 	info.added_by_user = added_by_user;
+	info.offloaded = offloaded;
 	notifier_type = adding ? SWITCHDEV_FDB_ADD_TO_DEVICE : SWITCHDEV_FDB_DEL_TO_DEVICE;
 	call_switchdev_notifiers(notifier_type, dev, &info.info);
 }
@@ -126,13 +127,15 @@ br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
 		br_switchdev_fdb_call_notifiers(false, fdb->key.addr.addr,
 						fdb->key.vlan_id,
 						fdb->dst->dev,
-						fdb->added_by_user);
+						fdb->added_by_user,
+						fdb->offloaded);
 		break;
 	case RTM_NEWNEIGH:
 		br_switchdev_fdb_call_notifiers(true, fdb->key.addr.addr,
 						fdb->key.vlan_id,
 						fdb->dst->dev,
-						fdb->added_by_user);
+						fdb->added_by_user,
+						fdb->offloaded);
 		break;
 	}
 }
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index f7c122357a96..9b74e439809f 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1464,6 +1464,7 @@ static void dsa_slave_switchdev_event_work(struct work_struct *work)
 			netdev_dbg(dev, "fdb add failed err=%d\n", err);
 			break;
 		}
+		fdb_info->offloaded = true;
 		call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
 					 &fdb_info->info);
 		break;
-- 
2.43.0

[PATCH 4.19 45/96] net: bridge: fdb: convert is_local to bitops

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

[ Upstream commit 6869c3b02b596eba931a754f56875d2e2ac612db ]

The patch adds a new fdb flags field in the hole between the two cache
lines and uses it to convert is_local to bitops.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: bee2ef946d31 ("net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/br_fdb.c     | 32 +++++++++++++++++++-------------
 net/bridge/br_input.c   |  2 +-
 net/bridge/br_private.h |  9 +++++++--
 3 files changed, 27 insertions(+), 16 deletions(-)

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index a659e7c4ee43..f01ccf6ca4f4 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -255,7 +255,8 @@ void br_fdb_find_delete_local(struct net_bridge *br,
 
 	spin_lock_bh(&br->hash_lock);
 	f = br_fdb_find(br, addr, vid);
-	if (f && f->is_local && !f->added_by_user && f->dst == p)
+	if (f && test_bit(BR_FDB_LOCAL, &f->flags) &&
+	    !f->added_by_user && f->dst == p)
 		fdb_delete_local(br, p, f);
 	spin_unlock_bh(&br->hash_lock);
 }
@@ -270,7 +271,8 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr)
 	spin_lock_bh(&br->hash_lock);
 	vg = nbp_vlan_group(p);
 	hlist_for_each_entry(f, &br->fdb_list, fdb_node) {
-		if (f->dst == p && f->is_local && !f->added_by_user) {
+		if (f->dst == p && test_bit(BR_FDB_LOCAL, &f->flags) &&
+		    !f->added_by_user) {
 			/* delete old one */
 			fdb_delete_local(br, p, f);
 
@@ -311,7 +313,8 @@ void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr)
 
 	/* If old entry was unassociated with any port, then delete it. */
 	f = br_fdb_find(br, br->dev->dev_addr, 0);
-	if (f && f->is_local && !f->dst && !f->added_by_user)
+	if (f && test_bit(BR_FDB_LOCAL, &f->flags) &&
+	    !f->dst && !f->added_by_user)
 		fdb_delete_local(br, NULL, f);
 
 	fdb_insert(br, NULL, newaddr, 0);
@@ -326,7 +329,8 @@ void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr)
 		if (!br_vlan_should_use(v))
 			continue;
 		f = br_fdb_find(br, br->dev->dev_addr, v->vid);
-		if (f && f->is_local && !f->dst && !f->added_by_user)
+		if (f && test_bit(BR_FDB_LOCAL, &f->flags) &&
+		    !f->dst && !f->added_by_user)
 			fdb_delete_local(br, NULL, f);
 		fdb_insert(br, NULL, newaddr, v->vid);
 	}
@@ -405,7 +409,7 @@ void br_fdb_delete_by_port(struct net_bridge *br,
 			if (f->is_static || (vid && f->key.vlan_id != vid))
 				continue;
 
-		if (f->is_local)
+		if (test_bit(BR_FDB_LOCAL, &f->flags))
 			fdb_delete_local(br, p, f);
 		else
 			fdb_delete(br, f, true);
@@ -474,7 +478,7 @@ int br_fdb_fillbuf(struct net_bridge *br, void *buf,
 		fe->port_no = f->dst->port_no;
 		fe->port_hi = f->dst->port_no >> 8;
 
-		fe->is_local = f->is_local;
+		fe->is_local = test_bit(BR_FDB_LOCAL, &f->flags);
 		if (!f->is_static)
 			fe->ageing_timer_value = jiffies_delta_to_clock_t(jiffies - f->updated);
 		++fe;
@@ -499,7 +503,9 @@ static struct net_bridge_fdb_entry *fdb_create(struct net_bridge *br,
 		memcpy(fdb->key.addr.addr, addr, ETH_ALEN);
 		fdb->dst = source;
 		fdb->key.vlan_id = vid;
-		fdb->is_local = is_local;
+		fdb->flags = 0;
+		if (is_local)
+			set_bit(BR_FDB_LOCAL, &fdb->flags);
 		fdb->is_static = is_static;
 		fdb->added_by_user = 0;
 		fdb->added_by_external_learn = 0;
@@ -530,7 +536,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
 		/* it is okay to have multiple ports with same
 		 * address, just use the first one.
 		 */
-		if (fdb->is_local)
+		if (test_bit(BR_FDB_LOCAL, &fdb->flags))
 			return 0;
 		br_warn(br, "adding interface %s with same address as a received packet (addr:%pM, vlan:%u)\n",
 		       source ? source->dev->name : br->dev->name, addr, vid);
@@ -576,7 +582,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 	fdb = fdb_find_rcu(&br->fdb_hash_tbl, addr, vid);
 	if (likely(fdb)) {
 		/* attempt to update an entry for a local interface */
-		if (unlikely(fdb->is_local)) {
+		if (unlikely(test_bit(BR_FDB_LOCAL, &fdb->flags))) {
 			if (net_ratelimit())
 				br_warn(br, "received packet on %s with own address as source address (addr:%pM, vlan:%u)\n",
 					source->dev->name, addr, vid);
@@ -620,7 +626,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 static int fdb_to_nud(const struct net_bridge *br,
 		      const struct net_bridge_fdb_entry *fdb)
 {
-	if (fdb->is_local)
+	if (test_bit(BR_FDB_LOCAL, &fdb->flags))
 		return NUD_PERMANENT;
 	else if (fdb->is_static)
 		return NUD_NOARP;
@@ -818,19 +824,19 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
 
 	if (fdb_to_nud(br, fdb) != state) {
 		if (state & NUD_PERMANENT) {
-			fdb->is_local = 1;
+			set_bit(BR_FDB_LOCAL, &fdb->flags);
 			if (!fdb->is_static) {
 				fdb->is_static = 1;
 				fdb_add_hw_addr(br, addr);
 			}
 		} else if (state & NUD_NOARP) {
-			fdb->is_local = 0;
+			clear_bit(BR_FDB_LOCAL, &fdb->flags);
 			if (!fdb->is_static) {
 				fdb->is_static = 1;
 				fdb_add_hw_addr(br, addr);
 			}
 		} else {
-			fdb->is_local = 0;
+			clear_bit(BR_FDB_LOCAL, &fdb->flags);
 			if (fdb->is_static) {
 				fdb->is_static = 0;
 				fdb_del_hw_addr(br, addr);
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index f3938337ff87..e126ba0bd486 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -163,7 +163,7 @@ int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb
 	if (dst) {
 		unsigned long now = jiffies;
 
-		if (dst->is_local)
+		if (test_bit(BR_FDB_LOCAL, &dst->flags))
 			return br_pass_frame_up(skb);
 
 		if (now != dst->used)
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index f5e258ca3043..6a38ea247a9e 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -168,6 +168,11 @@ struct net_bridge_vlan_group {
 	u16				pvid;
 };
 
+/* bridge fdb flags */
+enum {
+	BR_FDB_LOCAL,
+};
+
 struct net_bridge_fdb_key {
 	mac_addr addr;
 	u16 vlan_id;
@@ -179,8 +184,8 @@ struct net_bridge_fdb_entry {
 
 	struct net_bridge_fdb_key	key;
 	struct hlist_node		fdb_node;
-	unsigned char			is_local:1,
-					is_static:1,
+	unsigned long			flags;
+	unsigned char			is_static:1,
 					is_sticky:1,
 					added_by_user:1,
 					added_by_external_learn:1,
-- 
2.43.0

[PATCH 4.19 46/96] net: bridge: fdb: convert is_static to bitops

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

[ Upstream commit 29e63fffd666f1945756882d4b02bc7bec132101 ]

Convert the is_static to bitops, make use of the combined
test_and_set/clear_bit to simplify expressions in fdb_add_entry.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: bee2ef946d31 ("net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/br_fdb.c     | 40 +++++++++++++++++++---------------------
 net/bridge/br_private.h |  4 ++--
 2 files changed, 21 insertions(+), 23 deletions(-)

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index f01ccf6ca4f4..2639cc744bca 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -80,8 +80,9 @@ static inline unsigned long hold_time(const struct net_bridge *br)
 static inline int has_expired(const struct net_bridge *br,
 				  const struct net_bridge_fdb_entry *fdb)
 {
-	return !fdb->is_static && !fdb->added_by_external_learn &&
-		time_before_eq(fdb->updated + hold_time(br), jiffies);
+	return !test_bit(BR_FDB_STATIC, &fdb->flags) &&
+	       !fdb->added_by_external_learn &&
+	       time_before_eq(fdb->updated + hold_time(br), jiffies);
 }
 
 static void fdb_rcu_free(struct rcu_head *head)
@@ -202,7 +203,7 @@ static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f,
 {
 	trace_fdb_delete(br, f);
 
-	if (f->is_static)
+	if (test_bit(BR_FDB_STATIC, &f->flags))
 		fdb_del_hw_addr(br, f->key.addr.addr);
 
 	hlist_del_init_rcu(&f->fdb_node);
@@ -355,7 +356,8 @@ void br_fdb_cleanup(struct work_struct *work)
 	hlist_for_each_entry_rcu(f, &br->fdb_list, fdb_node) {
 		unsigned long this_timer;
 
-		if (f->is_static || f->added_by_external_learn)
+		if (test_bit(BR_FDB_STATIC, &f->flags) ||
+		    f->added_by_external_learn)
 			continue;
 		this_timer = f->updated + delay;
 		if (time_after(this_timer, now)) {
@@ -382,7 +384,7 @@ void br_fdb_flush(struct net_bridge *br)
 
 	spin_lock_bh(&br->hash_lock);
 	hlist_for_each_entry_safe(f, tmp, &br->fdb_list, fdb_node) {
-		if (!f->is_static)
+		if (!test_bit(BR_FDB_STATIC, &f->flags))
 			fdb_delete(br, f, true);
 	}
 	spin_unlock_bh(&br->hash_lock);
@@ -406,7 +408,8 @@ void br_fdb_delete_by_port(struct net_bridge *br,
 			continue;
 
 		if (!do_all)
-			if (f->is_static || (vid && f->key.vlan_id != vid))
+			if (test_bit(BR_FDB_STATIC, &f->flags) ||
+			    (vid && f->key.vlan_id != vid))
 				continue;
 
 		if (test_bit(BR_FDB_LOCAL, &f->flags))
@@ -479,7 +482,7 @@ int br_fdb_fillbuf(struct net_bridge *br, void *buf,
 		fe->port_hi = f->dst->port_no >> 8;
 
 		fe->is_local = test_bit(BR_FDB_LOCAL, &f->flags);
-		if (!f->is_static)
+		if (!test_bit(BR_FDB_STATIC, &f->flags))
 			fe->ageing_timer_value = jiffies_delta_to_clock_t(jiffies - f->updated);
 		++fe;
 		++num;
@@ -506,7 +509,8 @@ static struct net_bridge_fdb_entry *fdb_create(struct net_bridge *br,
 		fdb->flags = 0;
 		if (is_local)
 			set_bit(BR_FDB_LOCAL, &fdb->flags);
-		fdb->is_static = is_static;
+		if (is_static)
+			set_bit(BR_FDB_STATIC, &fdb->flags);
 		fdb->added_by_user = 0;
 		fdb->added_by_external_learn = 0;
 		fdb->offloaded = 0;
@@ -628,7 +632,7 @@ static int fdb_to_nud(const struct net_bridge *br,
 {
 	if (test_bit(BR_FDB_LOCAL, &fdb->flags))
 		return NUD_PERMANENT;
-	else if (fdb->is_static)
+	else if (test_bit(BR_FDB_STATIC, &fdb->flags))
 		return NUD_NOARP;
 	else if (has_expired(br, fdb))
 		return NUD_STALE;
@@ -825,22 +829,16 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
 	if (fdb_to_nud(br, fdb) != state) {
 		if (state & NUD_PERMANENT) {
 			set_bit(BR_FDB_LOCAL, &fdb->flags);
-			if (!fdb->is_static) {
-				fdb->is_static = 1;
+			if (!test_and_set_bit(BR_FDB_STATIC, &fdb->flags))
 				fdb_add_hw_addr(br, addr);
-			}
 		} else if (state & NUD_NOARP) {
 			clear_bit(BR_FDB_LOCAL, &fdb->flags);
-			if (!fdb->is_static) {
-				fdb->is_static = 1;
+			if (!test_and_set_bit(BR_FDB_STATIC, &fdb->flags))
 				fdb_add_hw_addr(br, addr);
-			}
 		} else {
 			clear_bit(BR_FDB_LOCAL, &fdb->flags);
-			if (fdb->is_static) {
-				fdb->is_static = 0;
+			if (test_and_clear_bit(BR_FDB_STATIC, &fdb->flags))
 				fdb_del_hw_addr(br, addr);
-			}
 		}
 
 		modified = true;
@@ -1047,7 +1045,7 @@ int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p)
 	rcu_read_lock();
 	hlist_for_each_entry_rcu(f, &br->fdb_list, fdb_node) {
 		/* We only care for static entries */
-		if (!f->is_static)
+		if (!test_bit(BR_FDB_STATIC, &f->flags))
 			continue;
 		err = dev_uc_add(p->dev, f->key.addr.addr);
 		if (err)
@@ -1061,7 +1059,7 @@ int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p)
 rollback:
 	hlist_for_each_entry_rcu(tmp, &br->fdb_list, fdb_node) {
 		/* We only care for static entries */
-		if (!tmp->is_static)
+		if (!test_bit(BR_FDB_STATIC, &tmp->flags))
 			continue;
 		if (tmp == f)
 			break;
@@ -1080,7 +1078,7 @@ void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p)
 	rcu_read_lock();
 	hlist_for_each_entry_rcu(f, &br->fdb_list, fdb_node) {
 		/* We only care for static entries */
-		if (!f->is_static)
+		if (!test_bit(BR_FDB_STATIC, &f->flags))
 			continue;
 
 		dev_uc_del(p->dev, f->key.addr.addr);
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 6a38ea247a9e..c3160d73e6ed 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -171,6 +171,7 @@ struct net_bridge_vlan_group {
 /* bridge fdb flags */
 enum {
 	BR_FDB_LOCAL,
+	BR_FDB_STATIC,
 };
 
 struct net_bridge_fdb_key {
@@ -185,8 +186,7 @@ struct net_bridge_fdb_entry {
 	struct net_bridge_fdb_key	key;
 	struct hlist_node		fdb_node;
 	unsigned long			flags;
-	unsigned char			is_static:1,
-					is_sticky:1,
+	unsigned char			is_sticky:1,
 					added_by_user:1,
 					added_by_external_learn:1,
 					offloaded:1;
-- 
2.43.0

[PATCH 4.19 47/96] net: bridge: fdb: convert is_sticky to bitops

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

[ Upstream commit e0458d9a733ba71a2821d0c3fc0745baac697db0 ]

Straight-forward convert of the is_sticky field to bitops.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: bee2ef946d31 ("net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/br_fdb.c     | 11 ++++++-----
 net/bridge/br_private.h |  4 ++--
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 2639cc744bca..25aeaedce762 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -594,7 +594,8 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 			unsigned long now = jiffies;
 
 			/* fastpath: update of existing entry */
-			if (unlikely(source != fdb->dst && !fdb->is_sticky)) {
+			if (unlikely(source != fdb->dst &&
+				     !test_bit(BR_FDB_STICKY, &fdb->flags))) {
 				fdb->dst = source;
 				fdb_modified = true;
 				/* Take over HW learned entry */
@@ -666,7 +667,7 @@ static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
 		ndm->ndm_flags |= NTF_OFFLOADED;
 	if (fdb->added_by_external_learn)
 		ndm->ndm_flags |= NTF_EXT_LEARNED;
-	if (fdb->is_sticky)
+	if (test_bit(BR_FDB_STICKY, &fdb->flags))
 		ndm->ndm_flags |= NTF_STICKY;
 
 	if (nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->key.addr))
@@ -787,7 +788,7 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
 			 const u8 *addr, u16 state, u16 flags, u16 vid,
 			 u8 ndm_flags)
 {
-	u8 is_sticky = !!(ndm_flags & NTF_STICKY);
+	bool is_sticky = !!(ndm_flags & NTF_STICKY);
 	struct net_bridge_fdb_entry *fdb;
 	bool modified = false;
 
@@ -844,8 +845,8 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
 		modified = true;
 	}
 
-	if (is_sticky != fdb->is_sticky) {
-		fdb->is_sticky = is_sticky;
+	if (is_sticky != test_bit(BR_FDB_STICKY, &fdb->flags)) {
+		change_bit(BR_FDB_STICKY, &fdb->flags);
 		modified = true;
 	}
 
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index c3160d73e6ed..131e5be58468 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -172,6 +172,7 @@ struct net_bridge_vlan_group {
 enum {
 	BR_FDB_LOCAL,
 	BR_FDB_STATIC,
+	BR_FDB_STICKY,
 };
 
 struct net_bridge_fdb_key {
@@ -186,8 +187,7 @@ struct net_bridge_fdb_entry {
 	struct net_bridge_fdb_key	key;
 	struct hlist_node		fdb_node;
 	unsigned long			flags;
-	unsigned char			is_sticky:1,
-					added_by_user:1,
+	unsigned char			added_by_user:1,
 					added_by_external_learn:1,
 					offloaded:1;
 
-- 
2.43.0

[PATCH 4.19 48/96] net: bridge: fdb: convert added_by_user to bitops

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

[ Upstream commit ac3ca6af443aa495c7907e5010ac77fbd2450eaa ]

Straight-forward convert of the added_by_user field to bitops.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: bee2ef946d31 ("net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/br_fdb.c       | 25 ++++++++++++-------------
 net/bridge/br_private.h   |  4 ++--
 net/bridge/br_switchdev.c |  6 ++++--
 3 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 25aeaedce762..7ae27569ced9 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -230,7 +230,7 @@ static void fdb_delete_local(struct net_bridge *br,
 		if (op != p && ether_addr_equal(op->dev->dev_addr, addr) &&
 		    (!vid || br_vlan_find(vg, vid))) {
 			f->dst = op;
-			f->added_by_user = 0;
+			clear_bit(BR_FDB_ADDED_BY_USER, &f->flags);
 			return;
 		}
 	}
@@ -241,7 +241,7 @@ static void fdb_delete_local(struct net_bridge *br,
 	if (p && ether_addr_equal(br->dev->dev_addr, addr) &&
 	    (!vid || (v && br_vlan_should_use(v)))) {
 		f->dst = NULL;
-		f->added_by_user = 0;
+		clear_bit(BR_FDB_ADDED_BY_USER, &f->flags);
 		return;
 	}
 
@@ -257,7 +257,7 @@ void br_fdb_find_delete_local(struct net_bridge *br,
 	spin_lock_bh(&br->hash_lock);
 	f = br_fdb_find(br, addr, vid);
 	if (f && test_bit(BR_FDB_LOCAL, &f->flags) &&
-	    !f->added_by_user && f->dst == p)
+	    !test_bit(BR_FDB_ADDED_BY_USER, &f->flags) && f->dst == p)
 		fdb_delete_local(br, p, f);
 	spin_unlock_bh(&br->hash_lock);
 }
@@ -273,7 +273,7 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr)
 	vg = nbp_vlan_group(p);
 	hlist_for_each_entry(f, &br->fdb_list, fdb_node) {
 		if (f->dst == p && test_bit(BR_FDB_LOCAL, &f->flags) &&
-		    !f->added_by_user) {
+		    !test_bit(BR_FDB_ADDED_BY_USER, &f->flags)) {
 			/* delete old one */
 			fdb_delete_local(br, p, f);
 
@@ -315,7 +315,7 @@ void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr)
 	/* If old entry was unassociated with any port, then delete it. */
 	f = br_fdb_find(br, br->dev->dev_addr, 0);
 	if (f && test_bit(BR_FDB_LOCAL, &f->flags) &&
-	    !f->dst && !f->added_by_user)
+	    !f->dst && !test_bit(BR_FDB_ADDED_BY_USER, &f->flags))
 		fdb_delete_local(br, NULL, f);
 
 	fdb_insert(br, NULL, newaddr, 0);
@@ -331,7 +331,7 @@ void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr)
 			continue;
 		f = br_fdb_find(br, br->dev->dev_addr, v->vid);
 		if (f && test_bit(BR_FDB_LOCAL, &f->flags) &&
-		    !f->dst && !f->added_by_user)
+		    !f->dst && !test_bit(BR_FDB_ADDED_BY_USER, &f->flags))
 			fdb_delete_local(br, NULL, f);
 		fdb_insert(br, NULL, newaddr, v->vid);
 	}
@@ -511,7 +511,6 @@ static struct net_bridge_fdb_entry *fdb_create(struct net_bridge *br,
 			set_bit(BR_FDB_LOCAL, &fdb->flags);
 		if (is_static)
 			set_bit(BR_FDB_STATIC, &fdb->flags);
-		fdb->added_by_user = 0;
 		fdb->added_by_external_learn = 0;
 		fdb->offloaded = 0;
 		fdb->updated = fdb->used = jiffies;
@@ -605,7 +604,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 			if (now != fdb->updated)
 				fdb->updated = now;
 			if (unlikely(added_by_user))
-				fdb->added_by_user = 1;
+				set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
 			if (unlikely(fdb_modified)) {
 				trace_br_fdb_update(br, source, addr, vid, added_by_user);
 				fdb_notify(br, fdb, RTM_NEWNEIGH, true);
@@ -616,7 +615,7 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 		fdb = fdb_create(br, source, addr, vid, 0, 0);
 		if (fdb) {
 			if (unlikely(added_by_user))
-				fdb->added_by_user = 1;
+				set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
 			trace_br_fdb_update(br, source, addr, vid,
 					    added_by_user);
 			fdb_notify(br, fdb, RTM_NEWNEIGH, true);
@@ -850,7 +849,7 @@ static int fdb_add_entry(struct net_bridge *br, struct net_bridge_port *source,
 		modified = true;
 	}
 
-	fdb->added_by_user = 1;
+	set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
 
 	fdb->used = jiffies;
 	if (modified) {
@@ -1107,7 +1106,7 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 			goto err_unlock;
 		}
 		if (swdev_notify)
-			fdb->added_by_user = 1;
+			set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
 		fdb->added_by_external_learn = 1;
 		fdb_notify(br, fdb, RTM_NEWNEIGH, swdev_notify);
 	} else {
@@ -1121,14 +1120,14 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 		if (fdb->added_by_external_learn) {
 			/* Refresh entry */
 			fdb->used = jiffies;
-		} else if (!fdb->added_by_user) {
+		} else if (!test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags)) {
 			/* Take over SW learned entry */
 			fdb->added_by_external_learn = 1;
 			modified = true;
 		}
 
 		if (swdev_notify)
-			fdb->added_by_user = 1;
+			set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
 
 		if (modified)
 			fdb_notify(br, fdb, RTM_NEWNEIGH, swdev_notify);
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 131e5be58468..9132f11db683 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -173,6 +173,7 @@ enum {
 	BR_FDB_LOCAL,
 	BR_FDB_STATIC,
 	BR_FDB_STICKY,
+	BR_FDB_ADDED_BY_USER,
 };
 
 struct net_bridge_fdb_key {
@@ -187,8 +188,7 @@ struct net_bridge_fdb_entry {
 	struct net_bridge_fdb_key	key;
 	struct hlist_node		fdb_node;
 	unsigned long			flags;
-	unsigned char			added_by_user:1,
-					added_by_external_learn:1,
+	unsigned char			added_by_external_learn:1,
 					offloaded:1;
 
 	/* write-heavy members should not affect lookups */
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index b993df770675..e8948d49e5fc 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -127,14 +127,16 @@ br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
 		br_switchdev_fdb_call_notifiers(false, fdb->key.addr.addr,
 						fdb->key.vlan_id,
 						fdb->dst->dev,
-						fdb->added_by_user,
+						test_bit(BR_FDB_ADDED_BY_USER,
+							 &fdb->flags),
 						fdb->offloaded);
 		break;
 	case RTM_NEWNEIGH:
 		br_switchdev_fdb_call_notifiers(true, fdb->key.addr.addr,
 						fdb->key.vlan_id,
 						fdb->dst->dev,
-						fdb->added_by_user,
+						test_bit(BR_FDB_ADDED_BY_USER,
+							 &fdb->flags),
 						fdb->offloaded);
 		break;
 	}
-- 
2.43.0

[PATCH 4.19 49/96] net: bridge: fdb: convert added_by_external_learn to use bitops

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

[ Upstream commit b5cd9f7c42480ede119a390607a9dbe6263f6795 ]

Convert the added_by_external_learn field to a flag and use bitops.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: bee2ef946d31 ("net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/br_fdb.c     | 19 +++++++++----------
 net/bridge/br_private.h |  4 ++--
 2 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 7ae27569ced9..d898e3814f91 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -81,7 +81,7 @@ static inline int has_expired(const struct net_bridge *br,
 				  const struct net_bridge_fdb_entry *fdb)
 {
 	return !test_bit(BR_FDB_STATIC, &fdb->flags) &&
-	       !fdb->added_by_external_learn &&
+	       !test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags) &&
 	       time_before_eq(fdb->updated + hold_time(br), jiffies);
 }
 
@@ -357,7 +357,7 @@ void br_fdb_cleanup(struct work_struct *work)
 		unsigned long this_timer;
 
 		if (test_bit(BR_FDB_STATIC, &f->flags) ||
-		    f->added_by_external_learn)
+		    test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &f->flags))
 			continue;
 		this_timer = f->updated + delay;
 		if (time_after(this_timer, now)) {
@@ -511,7 +511,6 @@ static struct net_bridge_fdb_entry *fdb_create(struct net_bridge *br,
 			set_bit(BR_FDB_LOCAL, &fdb->flags);
 		if (is_static)
 			set_bit(BR_FDB_STATIC, &fdb->flags);
-		fdb->added_by_external_learn = 0;
 		fdb->offloaded = 0;
 		fdb->updated = fdb->used = jiffies;
 		if (rhashtable_lookup_insert_fast(&br->fdb_hash_tbl,
@@ -598,8 +597,8 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 				fdb->dst = source;
 				fdb_modified = true;
 				/* Take over HW learned entry */
-				if (unlikely(fdb->added_by_external_learn))
-					fdb->added_by_external_learn = 0;
+				test_and_clear_bit(BR_FDB_ADDED_BY_EXT_LEARN,
+						   &fdb->flags);
 			}
 			if (now != fdb->updated)
 				fdb->updated = now;
@@ -664,7 +663,7 @@ static int fdb_fill_info(struct sk_buff *skb, const struct net_bridge *br,
 
 	if (fdb->offloaded)
 		ndm->ndm_flags |= NTF_OFFLOADED;
-	if (fdb->added_by_external_learn)
+	if (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags))
 		ndm->ndm_flags |= NTF_EXT_LEARNED;
 	if (test_bit(BR_FDB_STICKY, &fdb->flags))
 		ndm->ndm_flags |= NTF_STICKY;
@@ -1107,7 +1106,7 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 		}
 		if (swdev_notify)
 			set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
-		fdb->added_by_external_learn = 1;
+		set_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags);
 		fdb_notify(br, fdb, RTM_NEWNEIGH, swdev_notify);
 	} else {
 		fdb->updated = jiffies;
@@ -1117,12 +1116,12 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 			modified = true;
 		}
 
-		if (fdb->added_by_external_learn) {
+		if (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags)) {
 			/* Refresh entry */
 			fdb->used = jiffies;
 		} else if (!test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags)) {
 			/* Take over SW learned entry */
-			fdb->added_by_external_learn = 1;
+			set_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags);
 			modified = true;
 		}
 
@@ -1149,7 +1148,7 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 	spin_lock_bh(&br->hash_lock);
 
 	fdb = br_fdb_find(br, addr, vid);
-	if (fdb && fdb->added_by_external_learn)
+	if (fdb && test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags))
 		fdb_delete(br, fdb, swdev_notify);
 	else
 		err = -ENOENT;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 9132f11db683..4ff5e3c96e57 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -174,6 +174,7 @@ enum {
 	BR_FDB_STATIC,
 	BR_FDB_STICKY,
 	BR_FDB_ADDED_BY_USER,
+	BR_FDB_ADDED_BY_EXT_LEARN,
 };
 
 struct net_bridge_fdb_key {
@@ -188,8 +189,7 @@ struct net_bridge_fdb_entry {
 	struct net_bridge_fdb_key	key;
 	struct hlist_node		fdb_node;
 	unsigned long			flags;
-	unsigned char			added_by_external_learn:1,
-					offloaded:1;
+	unsigned char			offloaded:1;
 
 	/* write-heavy members should not affect lookups */
 	unsigned long			updated ____cacheline_aligned_in_smp;
-- 
2.43.0

[PATCH 4.19 50/96] net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jonas Gorski <jonas.gorski@bisdn.de>

[ Upstream commit bee2ef946d3184e99077be526567d791c473036f ]

When userspace wants to take over a fdb entry by setting it as
EXTERN_LEARNED, we set both flags BR_FDB_ADDED_BY_EXT_LEARN and
BR_FDB_ADDED_BY_USER in br_fdb_external_learn_add().

If the bridge updates the entry later because its port changed, we clear
the BR_FDB_ADDED_BY_EXT_LEARN flag, but leave the BR_FDB_ADDED_BY_USER
flag set.

If userspace then wants to take over the entry again,
br_fdb_external_learn_add() sees that BR_FDB_ADDED_BY_USER and skips
setting the BR_FDB_ADDED_BY_EXT_LEARN flags, thus silently ignores the
update.

Fix this by always allowing to set BR_FDB_ADDED_BY_EXT_LEARN regardless
if this was a user fdb entry or not.

Fixes: 710ae7287737 ("net: bridge: Mark FDB entries that were added by user as such")
Signed-off-by: Jonas Gorski <jonas.gorski@bisdn.de>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20240903081958.29951-1-jonas.gorski@bisdn.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/br_fdb.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index d898e3814f91..a6e4901909e3 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -1116,12 +1116,10 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 			modified = true;
 		}
 
-		if (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags)) {
+		if (test_and_set_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags)) {
 			/* Refresh entry */
 			fdb->used = jiffies;
-		} else if (!test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags)) {
-			/* Take over SW learned entry */
-			set_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags);
+		} else {
 			modified = true;
 		}
 
-- 
2.43.0

[PATCH 4.19 51/96] net: dsa: vsc73xx: fix possible subblocks range of CAPT block

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Pawel Dembicki <paweldembicki@gmail.com>

[ Upstream commit 8e69c96df771ab469cec278edb47009351de4da6 ]

CAPT block (CPU Capture Buffer) have 7 sublocks: 0-3, 4, 6, 7.
Function 'vsc73xx_is_addr_valid' allows to use only block 0 at this
moment.

This patch fix it.

Fixes: 05bd97fc559d ("net: dsa: Add Vitesse VSC73xx DSA router driver")
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20240903203340.1518789-1-paweldembicki@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/dsa/vitesse-vsc73xx.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dsa/vitesse-vsc73xx.c b/drivers/net/dsa/vitesse-vsc73xx.c
index eaafb1c30c91..c91f989165ad 100644
--- a/drivers/net/dsa/vitesse-vsc73xx.c
+++ b/drivers/net/dsa/vitesse-vsc73xx.c
@@ -38,7 +38,7 @@
 #define VSC73XX_BLOCK_ANALYZER	0x2 /* Only subblock 0 */
 #define VSC73XX_BLOCK_MII	0x3 /* Subblocks 0 and 1 */
 #define VSC73XX_BLOCK_MEMINIT	0x3 /* Only subblock 2 */
-#define VSC73XX_BLOCK_CAPTURE	0x4 /* Only subblock 2 */
+#define VSC73XX_BLOCK_CAPTURE	0x4 /* Subblocks 0-4, 6, 7 */
 #define VSC73XX_BLOCK_ARBITER	0x5 /* Only subblock 0 */
 #define VSC73XX_BLOCK_SYSTEM	0x7 /* Only subblock 0 */
 
@@ -385,13 +385,19 @@ static int vsc73xx_is_addr_valid(u8 block, u8 subblock)
 		break;
 
 	case VSC73XX_BLOCK_MII:
-	case VSC73XX_BLOCK_CAPTURE:
 	case VSC73XX_BLOCK_ARBITER:
 		switch (subblock) {
 		case 0 ... 1:
 			return 1;
 		}
 		break;
+	case VSC73XX_BLOCK_CAPTURE:
+		switch (subblock) {
+		case 0 ... 4:
+		case 6 ... 7:
+			return 1;
+		}
+		break;
 	}
 
 	return 0;
-- 
2.43.0

[PATCH 4.19 52/96] iommu/vt-d: Handle volatile descriptor status read

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jacob Pan <jacob.jun.pan@linux.intel.com>

[ Upstream commit b5e86a95541cea737394a1da967df4cd4d8f7182 ]

Queued invalidation wait descriptor status is volatile in that IOMMU
hardware writes the data upon completion.

Use READ_ONCE() to prevent compiler optimizations which ensures memory
reads every time. As a side effect, READ_ONCE() also enforces strict
types and may add an extra instruction. But it should not have negative
performance impact since we use cpu_relax anyway and the extra time(by
adding an instruction) may allow IOMMU HW request cacheline ownership
easier.

e.g. gcc 12.3
BEFORE:
	81 38 ad de 00 00       cmpl   $0x2,(%rax)

AFTER (with READ_ONCE())
    772f:       8b 00                   mov    (%rax),%eax
    7731:       3d ad de 00 00          cmp    $0x2,%eax
                                        //status data is 32 bit

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20240607173817.3914600-1-jacob.jun.pan@linux.intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20240702130839.108139-2-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iommu/dmar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 3ea851583724..865847546f8e 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1292,7 +1292,7 @@ int qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu)
 	 */
 	writel(qi->free_head << DMAR_IQ_SHIFT, iommu->reg + DMAR_IQT_REG);
 
-	while (qi->desc_status[wait_index] != QI_DONE) {
+	while (READ_ONCE(qi->desc_status[wait_index]) != QI_DONE) {
 		/*
 		 * We will leave the interrupts disabled, to prevent interrupt
 		 * context to queue another cmd while a cmd is already submitted
-- 
2.43.0

[PATCH 4.19 53/96] cgroup: Protect css->cgroup write under css_set_lock

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Waiman Long <longman@redhat.com>

[ Upstream commit 57b56d16800e8961278ecff0dc755d46c4575092 ]

The writing of css->cgroup associated with the cgroup root in
rebind_subsystems() is currently protected only by cgroup_mutex.
However, the reading of css->cgroup in both proc_cpuset_show() and
proc_cgroup_show() is protected just by css_set_lock. That makes the
readers susceptible to racing problems like data tearing or caching.
It is also a problem that can be reported by KCSAN.

This can be fixed by using READ_ONCE() and WRITE_ONCE() to access
css->cgroup. Alternatively, the writing of css->cgroup can be moved
under css_set_lock as well which is done by this patch.

Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/cgroup/cgroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 6322b56529e9..30c058806702 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -1712,9 +1712,9 @@ int rebind_subsystems(struct cgroup_root *dst_root, u16 ss_mask)
 		RCU_INIT_POINTER(scgrp->subsys[ssid], NULL);
 		rcu_assign_pointer(dcgrp->subsys[ssid], css);
 		ss->root = dst_root;
-		css->cgroup = dcgrp;
 
 		spin_lock_irq(&css_set_lock);
+		css->cgroup = dcgrp;
 		WARN_ON(!list_empty(&dcgrp->e_csets[ss->id]));
 		list_for_each_entry_safe(cset, cset_pos, &scgrp->e_csets[ss->id],
 					 e_cset_node[ss->id]) {
-- 
2.43.0

[PATCH 4.19 54/96] um: line: always fill *error_out in setup_one_line()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit 824ac4a5edd3f7494ab1996826c4f47f8ef0f63d ]

The pointer isn't initialized by callers, but I have
encountered cases where it's still printed; initialize
it in all possible cases in setup_one_line().

Link: https://patch.msgid.link/20240703172235.ad863568b55f.Iaa1eba4db8265d7715ba71d5f6bb8c7ff63d27e9@changeid
Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/um/drivers/line.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 71e26488dfde..b5c3bc0e6bce 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -391,6 +391,7 @@ int setup_one_line(struct line *lines, int n, char *init,
 			parse_chan_pair(NULL, line, n, opts, error_out);
 			err = 0;
 		}
+		*error_out = "configured as 'none'";
 	} else {
 		char *new = kstrdup(init, GFP_KERNEL);
 		if (!new) {
@@ -414,6 +415,7 @@ int setup_one_line(struct line *lines, int n, char *init,
 			}
 		}
 		if (err) {
+			*error_out = "failed to parse channel pair";
 			line->init_str = NULL;
 			line->valid = 0;
 			kfree(new);
-- 
2.43.0

[PATCH 4.19 55/96] devres: Initialize an uninitialized struct member

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zijun Hu <quic_zijuhu@quicinc.com>

[ Upstream commit 56a20ad349b5c51909cf8810f7c79b288864ad33 ]

Initialize an uninitialized struct member for driver API
devres_open_group().

Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/1719931914-19035-4-git-send-email-quic_zijuhu@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/base/devres.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index a64f70a62e28..f9e5deb72db6 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -559,6 +559,7 @@ void * devres_open_group(struct device *dev, void *id, gfp_t gfp)
 	grp->id = grp;
 	if (id)
 		grp->id = id;
+	grp->color = 0;
 
 	spin_lock_irqsave(&dev->devres_lock, flags);
 	add_dr(dev, &grp->node[0]);
-- 
2.43.0

[PATCH 4.19 56/96] pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Krishna Kumar <krishnak@linux.ibm.com>

[ Upstream commit 335e35b748527f0c06ded9eebb65387f60647fda ]

The hotplug driver for powerpc (pci/hotplug/pnv_php.c) causes a kernel
crash when we try to hot-unplug/disable the PCIe switch/bridge from
the PHB.

The crash occurs because although the MSI data structure has been
released during disable/hot-unplug path and it has been assigned
with NULL, still during unregistration the code was again trying to
explicitly disable the MSI which causes the NULL pointer dereference and
kernel crash.

The patch fixes the check during unregistration path to prevent invoking
pci_disable_msi/msix() since its data structure is already freed.

Reported-by: Timothy Pearson <tpearson@raptorengineering.com>
Closes: https://lore.kernel.org/all/1981605666.2142272.1703742465927.JavaMail.zimbra@raptorengineeringinc.com/
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Shawn Anastasio <sanastasio@raptorengineering.com>
Signed-off-by: Krishna Kumar <krishnak@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240701074513.94873-2-krishnak@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/hotplug/pnv_php.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/pci/hotplug/pnv_php.c b/drivers/pci/hotplug/pnv_php.c
index 3276a5e4c430..486fad430958 100644
--- a/drivers/pci/hotplug/pnv_php.c
+++ b/drivers/pci/hotplug/pnv_php.c
@@ -35,7 +35,6 @@ static void pnv_php_disable_irq(struct pnv_php_slot *php_slot,
 				bool disable_device)
 {
 	struct pci_dev *pdev = php_slot->pdev;
-	int irq = php_slot->irq;
 	u16 ctrl;
 
 	if (php_slot->irq > 0) {
@@ -54,7 +53,7 @@ static void pnv_php_disable_irq(struct pnv_php_slot *php_slot,
 		php_slot->wq = NULL;
 	}
 
-	if (disable_device || irq > 0) {
+	if (disable_device) {
 		if (pdev->msix_enabled)
 			pci_disable_msix(pdev);
 		else if (pdev->msi_enabled)
-- 
2.43.0

[PATCH 4.19 57/96] hwmon: (adc128d818) Fix underflows seen when writing limit attributes

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Guenter Roeck <linux@roeck-us.net>

[ Upstream commit 8cad724c8537fe3e0da8004646abc00290adae40 ]

DIV_ROUND_CLOSEST() after kstrtol() results in an underflow if a large
negative number such as -9223372036854775808 is provided by the user.
Fix it by reordering clamp_val() and DIV_ROUND_CLOSEST() operations.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hwmon/adc128d818.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/adc128d818.c b/drivers/hwmon/adc128d818.c
index bd2ca315c9d8..5abb28cd81bf 100644
--- a/drivers/hwmon/adc128d818.c
+++ b/drivers/hwmon/adc128d818.c
@@ -184,7 +184,7 @@ static ssize_t adc128_set_in(struct device *dev, struct device_attribute *attr,
 
 	mutex_lock(&data->update_lock);
 	/* 10 mV LSB on limit registers */
-	regval = clamp_val(DIV_ROUND_CLOSEST(val, 10), 0, 255);
+	regval = DIV_ROUND_CLOSEST(clamp_val(val, 0, 2550), 10);
 	data->in[index][nr] = regval << 4;
 	reg = index == 1 ? ADC128_REG_IN_MIN(nr) : ADC128_REG_IN_MAX(nr);
 	i2c_smbus_write_byte_data(data->client, reg, regval);
@@ -222,7 +222,7 @@ static ssize_t adc128_set_temp(struct device *dev,
 		return err;
 
 	mutex_lock(&data->update_lock);
-	regval = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
+	regval = DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), 1000);
 	data->temp[index] = regval << 1;
 	i2c_smbus_write_byte_data(data->client,
 				  index == 1 ? ADC128_REG_TEMP_MAX
-- 
2.43.0

[PATCH 4.19 58/96] hwmon: (lm95234) Fix underflows seen when writing limit attributes

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Guenter Roeck <linux@roeck-us.net>

[ Upstream commit af64e3e1537896337405f880c1e9ac1f8c0c6198 ]

DIV_ROUND_CLOSEST() after kstrtol() results in an underflow if a large
negative number such as -9223372036854775808 is provided by the user.
Fix it by reordering clamp_val() and DIV_ROUND_CLOSEST() operations.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hwmon/lm95234.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/hwmon/lm95234.c b/drivers/hwmon/lm95234.c
index c7fcc9e7f57a..13912ac7c69f 100644
--- a/drivers/hwmon/lm95234.c
+++ b/drivers/hwmon/lm95234.c
@@ -310,7 +310,8 @@ static ssize_t set_tcrit2(struct device *dev, struct device_attribute *attr,
 	if (ret < 0)
 		return ret;
 
-	val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, index ? 255 : 127);
+	val = DIV_ROUND_CLOSEST(clamp_val(val, 0, (index ? 255 : 127) * 1000),
+				1000);
 
 	mutex_lock(&data->update_lock);
 	data->tcrit2[index] = val;
@@ -359,7 +360,7 @@ static ssize_t set_tcrit1(struct device *dev, struct device_attribute *attr,
 	if (ret < 0)
 		return ret;
 
-	val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 255);
+	val = DIV_ROUND_CLOSEST(clamp_val(val, 0, 255000), 1000);
 
 	mutex_lock(&data->update_lock);
 	data->tcrit1[index] = val;
@@ -400,7 +401,7 @@ static ssize_t set_tcrit1_hyst(struct device *dev,
 	if (ret < 0)
 		return ret;
 
-	val = DIV_ROUND_CLOSEST(val, 1000);
+	val = DIV_ROUND_CLOSEST(clamp_val(val, -255000, 255000), 1000);
 	val = clamp_val((int)data->tcrit1[index] - val, 0, 31);
 
 	mutex_lock(&data->update_lock);
@@ -440,7 +441,7 @@ static ssize_t set_offset(struct device *dev, struct device_attribute *attr,
 		return ret;
 
 	/* Accuracy is 1/2 degrees C */
-	val = clamp_val(DIV_ROUND_CLOSEST(val, 500), -128, 127);
+	val = DIV_ROUND_CLOSEST(clamp_val(val, -64000, 63500), 500);
 
 	mutex_lock(&data->update_lock);
 	data->toffset[index] = val;
-- 
2.43.0

[PATCH 4.19 59/96] hwmon: (nct6775-core) Fix underflows seen when writing limit attributes

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Guenter Roeck <linux@roeck-us.net>

[ Upstream commit 0403e10bf0824bf0ec2bb135d4cf1c0cc3bf4bf0 ]

DIV_ROUND_CLOSEST() after kstrtol() results in an underflow if a large
negative number such as -9223372036854775808 is provided by the user.
Fix it by reordering clamp_val() and DIV_ROUND_CLOSEST() operations.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hwmon/nct6775.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index 559101a1c136..23581dc62246 100644
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -2264,7 +2264,7 @@ store_temp_offset(struct device *dev, struct device_attribute *attr,
 	if (err < 0)
 		return err;
 
-	val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
+	val = DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), 1000);
 
 	mutex_lock(&data->update_lock);
 	data->temp_offset[nr] = val;
-- 
2.43.0

[PATCH 4.19 60/96] hwmon: (w83627ehf) Fix underflows seen when writing limit attributes

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Guenter Roeck <linux@roeck-us.net>

[ Upstream commit 5c1de37969b7bc0abcb20b86e91e70caebbd4f89 ]

DIV_ROUND_CLOSEST() after kstrtol() results in an underflow if a large
negative number such as -9223372036854775808 is provided by the user.
Fix it by reordering clamp_val() and DIV_ROUND_CLOSEST() operations.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hwmon/w83627ehf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index ad68b6d9ff17..8da5f77b8987 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -1519,7 +1519,7 @@ store_target_temp(struct device *dev, struct device_attribute *attr,
 	if (err < 0)
 		return err;
 
-	val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 127);
+	val = DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000);
 
 	mutex_lock(&data->update_lock);
 	data->target_temp[nr] = val;
@@ -1545,7 +1545,7 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
 		return err;
 
 	/* Limit the temp to 0C - 15C */
-	val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 15);
+	val = DIV_ROUND_CLOSEST(clamp_val(val, 0, 15000), 1000);
 
 	mutex_lock(&data->update_lock);
 	if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
-- 
2.43.0

[PATCH 4.19 61/96] wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sascha Hauer <s.hauer@pengutronix.de>

[ Upstream commit c145eea2f75ff7949392aebecf7ef0a81c1f6c14 ]

mwifiex_get_priv_by_id() returns the priv pointer corresponding to
the bss_num and bss_type, but without checking if the priv is actually
currently in use.
Unused priv pointers do not have a wiphy attached to them which can
lead to NULL pointer dereferences further down the callstack.  Fix
this by returning only used priv pointers which have priv->bss_mode
set to something else than NL80211_IFTYPE_UNSPECIFIED.

Said NULL pointer dereference happened when an Accesspoint was started
with wpa_supplicant -i mlan0 with this config:

network={
        ssid="somessid"
        mode=2
        frequency=2412
        key_mgmt=WPA-PSK WPA-PSK-SHA256
        proto=RSN
        group=CCMP
        pairwise=CCMP
        psk="12345678"
}

When waiting for the AP to be established, interrupting wpa_supplicant
with <ctrl-c> and starting it again this happens:

| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000140
| Mem abort info:
|   ESR = 0x0000000096000004
|   EC = 0x25: DABT (current EL), IL = 32 bits
|   SET = 0, FnV = 0
|   EA = 0, S1PTW = 0
|   FSC = 0x04: level 0 translation fault
| Data abort info:
|   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
|   CM = 0, WnR = 0, TnD = 0, TagAccess = 0
|   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
| user pgtable: 4k pages, 48-bit VAs, pgdp=0000000046d96000
| [0000000000000140] pgd=0000000000000000, p4d=0000000000000000
| Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
| Modules linked in: caam_jr caamhash_desc spidev caamalg_desc crypto_engine authenc libdes mwifiex_sdio
+mwifiex crct10dif_ce cdc_acm onboard_usb_hub fsl_imx8_ddr_perf imx8m_ddrc rtc_ds1307 lm75 rtc_snvs
+imx_sdma caam imx8mm_thermal spi_imx error imx_cpufreq_dt fuse ip_tables x_tables ipv6
| CPU: 0 PID: 8 Comm: kworker/0:1 Not tainted 6.9.0-00007-g937242013fce-dirty #18
| Hardware name: somemachine (DT)
| Workqueue: events sdio_irq_work
| pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
| pc : mwifiex_get_cfp+0xd8/0x15c [mwifiex]
| lr : mwifiex_get_cfp+0x34/0x15c [mwifiex]
| sp : ffff8000818b3a70
| x29: ffff8000818b3a70 x28: ffff000006bfd8a5 x27: 0000000000000004
| x26: 000000000000002c x25: 0000000000001511 x24: 0000000002e86bc9
| x23: ffff000006bfd996 x22: 0000000000000004 x21: ffff000007bec000
| x20: 000000000000002c x19: 0000000000000000 x18: 0000000000000000
| x17: 000000040044ffff x16: 00500072b5503510 x15: ccc283740681e517
| x14: 0201000101006d15 x13: 0000000002e8ff43 x12: 002c01000000ffb1
| x11: 0100000000000000 x10: 02e8ff43002c0100 x9 : 0000ffb100100157
| x8 : ffff000003d20000 x7 : 00000000000002f1 x6 : 00000000ffffe124
| x5 : 0000000000000001 x4 : 0000000000000003 x3 : 0000000000000000
| x2 : 0000000000000000 x1 : 0001000000011001 x0 : 0000000000000000
| Call trace:
|  mwifiex_get_cfp+0xd8/0x15c [mwifiex]
|  mwifiex_parse_single_response_buf+0x1d0/0x504 [mwifiex]
|  mwifiex_handle_event_ext_scan_report+0x19c/0x2f8 [mwifiex]
|  mwifiex_process_sta_event+0x298/0xf0c [mwifiex]
|  mwifiex_process_event+0x110/0x238 [mwifiex]
|  mwifiex_main_process+0x428/0xa44 [mwifiex]
|  mwifiex_sdio_interrupt+0x64/0x12c [mwifiex_sdio]
|  process_sdio_pending_irqs+0x64/0x1b8
|  sdio_irq_work+0x4c/0x7c
|  process_one_work+0x148/0x2a0
|  worker_thread+0x2fc/0x40c
|  kthread+0x110/0x114
|  ret_from_fork+0x10/0x20
| Code: a94153f3 a8c37bfd d50323bf d65f03c0 (f940a000)
| ---[ end trace 0000000000000000 ]---

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://patch.msgid.link/20240703072409.556618-1-s.hauer@pengutronix.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/marvell/mwifiex/main.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h
index 7e526014b638..89774e0316bd 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.h
+++ b/drivers/net/wireless/marvell/mwifiex/main.h
@@ -1306,6 +1306,9 @@ mwifiex_get_priv_by_id(struct mwifiex_adapter *adapter,
 
 	for (i = 0; i < adapter->priv_num; i++) {
 		if (adapter->priv[i]) {
+			if (adapter->priv[i]->bss_mode == NL80211_IFTYPE_UNSPECIFIED)
+				continue;
+
 			if ((adapter->priv[i]->bss_num == bss_num) &&
 			    (adapter->priv[i]->bss_type == bss_type))
 				break;
-- 
2.43.0

[PATCH 4.19 62/96] smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zqiang <qiang.zhang1211@gmail.com>

[ Upstream commit 77aeb1b685f9db73d276bad4bb30d48505a6fd23 ]

For CONFIG_DEBUG_OBJECTS_WORK=y kernels sscs.work defined by
INIT_WORK_ONSTACK() is initialized by debug_object_init_on_stack() for
the debug check in __init_work() to work correctly.

But this lacks the counterpart to remove the tracked object from debug
objects again, which will cause a debug object warning once the stack is
freed.

Add the missing destroy_work_on_stack() invocation to cure that.

[ tglx: Massaged changelog ]

Signed-off-by: Zqiang <qiang.zhang1211@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20240704065213.13559-1-qiang.zhang1211@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/smp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/smp.c b/kernel/smp.c
index 9fa2fe6c0c05..c5f333258ecf 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -791,6 +791,7 @@ int smp_call_on_cpu(unsigned int cpu, int (*func)(void *), void *par, bool phys)
 
 	queue_work_on(cpu, system_wq, &sscs.work);
 	wait_for_completion(&sscs.done);
+	destroy_work_on_stack(&sscs.work);
 
 	return sscs.ret;
 }
-- 
2.43.0

[PATCH 4.19 63/96] btrfs: replace BUG_ON with ASSERT in walk_down_proc()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Josef Bacik <josef@toxicpanda.com>

[ Upstream commit 1f9d44c0a12730a24f8bb75c5e1102207413cc9b ]

We have a couple of areas where we check to make sure the tree block is
locked before looking up or messing with references.  This is old code
so it has this as BUG_ON().  Convert this to ASSERT() for developers.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/btrfs/extent-tree.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 51f21cd61422..635d51c8098d 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8468,7 +8468,7 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
 	if (lookup_info &&
 	    ((wc->stage == DROP_REFERENCE && wc->refs[level] != 1) ||
 	     (wc->stage == UPDATE_BACKREF && !(wc->flags[level] & flag)))) {
-		BUG_ON(!path->locks[level]);
+		ASSERT(path->locks[level]);
 		ret = btrfs_lookup_extent_info(trans, fs_info,
 					       eb->start, level, 1,
 					       &wc->refs[level],
@@ -8492,7 +8492,7 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
 
 	/* wc->stage == UPDATE_BACKREF */
 	if (!(wc->flags[level] & flag)) {
-		BUG_ON(!path->locks[level]);
+		ASSERT(path->locks[level]);
 		ret = btrfs_inc_ref(trans, root, eb, 1);
 		BUG_ON(ret); /* -ENOMEM */
 		ret = btrfs_dec_ref(trans, root, eb, 0);
-- 
2.43.0

[PATCH 4.19 64/96] btrfs: clean up our handling of refs == 0 in snapshot delete

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Josef Bacik <josef@toxicpanda.com>

[ Upstream commit b8ccef048354074a548f108e51d0557d6adfd3a3 ]

In reada we BUG_ON(refs == 0), which could be unkind since we aren't
holding a lock on the extent leaf and thus could get a transient
incorrect answer.  In walk_down_proc we also BUG_ON(refs == 0), which
could happen if we have extent tree corruption.  Change that to return
-EUCLEAN.  In do_walk_down() we catch this case and handle it correctly,
however we return -EIO, which -EUCLEAN is a more appropriate error code.
Finally in walk_up_proc we have the same BUG_ON(refs == 0), so convert
that to proper error handling.  Also adjust the error message so we can
actually do something with the information.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/btrfs/extent-tree.c | 28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 635d51c8098d..6b8ece5175ef 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8409,7 +8409,15 @@ static noinline void reada_walk_down(struct btrfs_trans_handle *trans,
 		/* We don't care about errors in readahead. */
 		if (ret < 0)
 			continue;
-		BUG_ON(refs == 0);
+
+		/*
+		 * This could be racey, it's conceivable that we raced and end
+		 * up with a bogus refs count, if that's the case just skip, if
+		 * we are actually corrupt we will notice when we look up
+		 * everything again with our locks.
+		 */
+		if (refs == 0)
+			continue;
 
 		if (wc->stage == DROP_REFERENCE) {
 			if (refs == 1)
@@ -8476,7 +8484,11 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
 		BUG_ON(ret == -ENOMEM);
 		if (ret)
 			return ret;
-		BUG_ON(wc->refs[level] == 0);
+		if (unlikely(wc->refs[level] == 0)) {
+			btrfs_err(fs_info, "bytenr %llu has 0 references, expect > 0",
+				  eb->start);
+			return -EUCLEAN;
+		}
 	}
 
 	if (wc->stage == DROP_REFERENCE) {
@@ -8584,8 +8596,9 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
 		goto out_unlock;
 
 	if (unlikely(wc->refs[level - 1] == 0)) {
-		btrfs_err(fs_info, "Missing references.");
-		ret = -EIO;
+		btrfs_err(fs_info, "bytenr %llu has 0 references, expect > 0",
+			  bytenr);
+		ret = -EUCLEAN;
 		goto out_unlock;
 	}
 	*lookup_info = 0;
@@ -8753,7 +8766,12 @@ static noinline int walk_up_proc(struct btrfs_trans_handle *trans,
 				path->locks[level] = 0;
 				return ret;
 			}
-			BUG_ON(wc->refs[level] == 0);
+			if (unlikely(wc->refs[level] == 0)) {
+				btrfs_tree_unlock_rw(eb, path->locks[level]);
+				btrfs_err(fs_info, "bytenr %llu has 0 references, expect > 0",
+					  eb->start);
+				return -EUCLEAN;
+			}
 			if (wc->refs[level] == 1) {
 				btrfs_tree_unlock_rw(eb, path->locks[level]);
 				path->locks[level] = 0;
-- 
2.43.0

[PATCH 4.19 65/96] PCI: Add missing bridge lock to pci_bus_lock()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Williams <dan.j.williams@intel.com>

[ Upstream commit a4e772898f8bf2e7e1cf661a12c60a5612c4afab ]

One of the true positives that the cfg_access_lock lockdep effort
identified is this sequence:

  WARNING: CPU: 14 PID: 1 at drivers/pci/pci.c:4886 pci_bridge_secondary_bus_reset+0x5d/0x70
  RIP: 0010:pci_bridge_secondary_bus_reset+0x5d/0x70
  Call Trace:
   <TASK>
   ? __warn+0x8c/0x190
   ? pci_bridge_secondary_bus_reset+0x5d/0x70
   ? report_bug+0x1f8/0x200
   ? handle_bug+0x3c/0x70
   ? exc_invalid_op+0x18/0x70
   ? asm_exc_invalid_op+0x1a/0x20
   ? pci_bridge_secondary_bus_reset+0x5d/0x70
   pci_reset_bus+0x1d8/0x270
   vmd_probe+0x778/0xa10
   pci_device_probe+0x95/0x120

Where pci_reset_bus() users are triggering unlocked secondary bus resets.
Ironically pci_bus_reset(), several calls down from pci_reset_bus(), uses
pci_bus_lock() before issuing the reset which locks everything *but* the
bridge itself.

For the same motivation as adding:

  bridge = pci_upstream_bridge(dev);
  if (bridge)
    pci_dev_lock(bridge);

to pci_reset_function() for the "bus" and "cxl_bus" reset cases, add
pci_dev_lock() for @bus->self to pci_bus_lock().

Link: https://lore.kernel.org/r/171711747501.1628941.15217746952476635316.stgit@dwillia2-xfh.jf.intel.com
Reported-by: Imre Deak <imre.deak@intel.com>
Closes: http://lore.kernel.org/r/6657833b3b5ae_14984b29437@dwillia2-xfh.jf.intel.com.notmuch
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
[bhelgaas: squash in recursive locking deadlock fix from Keith Busch:
https://lore.kernel.org/r/20240711193650.701834-1-kbusch@meta.com]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Kalle Valo <kvalo@kernel.org>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/pci.c | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 4f229cb5d2a9..aa2be8d81504 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -4957,10 +4957,12 @@ static void pci_bus_lock(struct pci_bus *bus)
 {
 	struct pci_dev *dev;
 
+	pci_dev_lock(bus->self);
 	list_for_each_entry(dev, &bus->devices, bus_list) {
-		pci_dev_lock(dev);
 		if (dev->subordinate)
 			pci_bus_lock(dev->subordinate);
+		else
+			pci_dev_lock(dev);
 	}
 }
 
@@ -4972,8 +4974,10 @@ static void pci_bus_unlock(struct pci_bus *bus)
 	list_for_each_entry(dev, &bus->devices, bus_list) {
 		if (dev->subordinate)
 			pci_bus_unlock(dev->subordinate);
-		pci_dev_unlock(dev);
+		else
+			pci_dev_unlock(dev);
 	}
+	pci_dev_unlock(bus->self);
 }
 
 /* Return 1 on successful lock, 0 on contention */
@@ -4981,15 +4985,15 @@ static int pci_bus_trylock(struct pci_bus *bus)
 {
 	struct pci_dev *dev;
 
+	if (!pci_dev_trylock(bus->self))
+		return 0;
+
 	list_for_each_entry(dev, &bus->devices, bus_list) {
-		if (!pci_dev_trylock(dev))
-			goto unlock;
 		if (dev->subordinate) {
-			if (!pci_bus_trylock(dev->subordinate)) {
-				pci_dev_unlock(dev);
+			if (!pci_bus_trylock(dev->subordinate))
 				goto unlock;
-			}
-		}
+		} else if (!pci_dev_trylock(dev))
+			goto unlock;
 	}
 	return 1;
 
@@ -4997,8 +5001,10 @@ static int pci_bus_trylock(struct pci_bus *bus)
 	list_for_each_entry_continue_reverse(dev, &bus->devices, bus_list) {
 		if (dev->subordinate)
 			pci_bus_unlock(dev->subordinate);
-		pci_dev_unlock(dev);
+		else
+			pci_dev_unlock(dev);
 	}
+	pci_dev_unlock(bus->self);
 	return 0;
 }
 
@@ -5030,9 +5036,10 @@ static void pci_slot_lock(struct pci_slot *slot)
 	list_for_each_entry(dev, &slot->bus->devices, bus_list) {
 		if (!dev->slot || dev->slot != slot)
 			continue;
-		pci_dev_lock(dev);
 		if (dev->subordinate)
 			pci_bus_lock(dev->subordinate);
+		else
+			pci_dev_lock(dev);
 	}
 }
 
@@ -5058,14 +5065,13 @@ static int pci_slot_trylock(struct pci_slot *slot)
 	list_for_each_entry(dev, &slot->bus->devices, bus_list) {
 		if (!dev->slot || dev->slot != slot)
 			continue;
-		if (!pci_dev_trylock(dev))
-			goto unlock;
 		if (dev->subordinate) {
 			if (!pci_bus_trylock(dev->subordinate)) {
 				pci_dev_unlock(dev);
 				goto unlock;
 			}
-		}
+		} else if (!pci_dev_trylock(dev))
+			goto unlock;
 	}
 	return 1;
 
@@ -5076,7 +5082,8 @@ static int pci_slot_trylock(struct pci_slot *slot)
 			continue;
 		if (dev->subordinate)
 			pci_bus_unlock(dev->subordinate);
-		pci_dev_unlock(dev);
+		else
+			pci_dev_unlock(dev);
 	}
 	return 0;
 }
-- 
2.43.0

[PATCH 4.19 66/96] btrfs: initialize location to fix -Wmaybe-uninitialized in btrfs_lookup_dentry()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Sterba <dsterba@suse.com>

[ Upstream commit b8e947e9f64cac9df85a07672b658df5b2bcff07 ]

Some arch + compiler combinations report a potentially unused variable
location in btrfs_lookup_dentry(). This is a false alert as the variable
is passed by value and always valid or there's an error. The compilers
cannot probably reason about that although btrfs_inode_by_name() is in
the same file.

   >  + /kisskb/src/fs/btrfs/inode.c: error: 'location.objectid' may be used
   +uninitialized in this function [-Werror=maybe-uninitialized]:  => 5603:9
   >  + /kisskb/src/fs/btrfs/inode.c: error: 'location.type' may be used
   +uninitialized in this function [-Werror=maybe-uninitialized]:  => 5674:5

   m68k-gcc8/m68k-allmodconfig
   mips-gcc8/mips-allmodconfig
   powerpc-gcc5/powerpc-all{mod,yes}config
   powerpc-gcc5/ppc64_defconfig

Initialize it to zero, this should fix the warnings and won't change the
behaviour as btrfs_inode_by_name() accepts only a root or inode item
types, otherwise returns an error.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/linux-btrfs/bd4e9928-17b3-9257-8ba7-6b7f9bbb639a@linux-m68k.org/
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/btrfs/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 15ebebed4005..22059aa5eb26 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5869,7 +5869,7 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry)
 	struct inode *inode;
 	struct btrfs_root *root = BTRFS_I(dir)->root;
 	struct btrfs_root *sub_root = root;
-	struct btrfs_key location;
+	struct btrfs_key location = { 0 };
 	u8 di_type = 0;
 	int index;
 	int ret = 0;
-- 
2.43.0

[PATCH 4.19 67/96] HID: cougar: fix slab-out-of-bounds Read in cougar_report_fixup

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Camila Alvarez <cam.alvarez.i@gmail.com>

[ Upstream commit a6e9c391d45b5865b61e569146304cff72821a5d ]

report_fixup for the Cougar 500k Gaming Keyboard was not verifying
that the report descriptor size was correct before accessing it

Reported-by: syzbot+24c0361074799d02c452@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=24c0361074799d02c452
Signed-off-by: Camila Alvarez <cam.alvarez.i@gmail.com>
Reviewed-by: Silvan Jegen <s.jegen@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-cougar.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-cougar.c b/drivers/hid/hid-cougar.c
index ad2e87de7dc5..d58a108a96c0 100644
--- a/drivers/hid/hid-cougar.c
+++ b/drivers/hid/hid-cougar.c
@@ -104,7 +104,7 @@ static void cougar_fix_g6_mapping(struct hid_device *hdev)
 static __u8 *cougar_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 				 unsigned int *rsize)
 {
-	if (rdesc[2] == 0x09 && rdesc[3] == 0x02 &&
+	if (*rsize >= 117 && rdesc[2] == 0x09 && rdesc[3] == 0x02 &&
 	    (rdesc[115] | rdesc[116] << 8) >= HID_MAX_USAGES) {
 		hid_info(hdev,
 			"usage count exceeds max: fixing up report descriptor\n");
-- 
2.43.0

[PATCH 4.19 68/96] Input: uinput - reject requests with unreasonable number of slots

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

[ Upstream commit 206f533a0a7c683982af473079c4111f4a0f9f5e ]

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

When exercising uinput interface syzkaller may try setting up device
with a really large number of slots, which causes memory allocation
failure in input_mt_init_slots(). While this allocation failure is
handled properly and request is rejected, it results in syzkaller
reports. Additionally, such request may put undue burden on the
system which will try to free a lot of memory for a bogus request.

Fix it by limiting allowed number of slots to 100. This can easily
be extended if we see devices that can track more than 100 contacts.

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+0122fa359a69694395d5@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=0122fa359a69694395d5
Link: https://lore.kernel.org/r/Zqgi7NYEbpRsJfa2@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/input/misc/uinput.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index e746920872a4..50839c902518 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -429,6 +429,20 @@ static int uinput_validate_absinfo(struct input_dev *dev, unsigned int code,
 		return -EINVAL;
 	}
 
+	/*
+	 * Limit number of contacts to a reasonable value (100). This
+	 * ensures that we need less than 2 pages for struct input_mt
+	 * (we are not using in-kernel slot assignment so not going to
+	 * allocate memory for the "red" table), and we should have no
+	 * trouble getting this much memory.
+	 */
+	if (code == ABS_MT_SLOT && max > 99) {
+		printk(KERN_DEBUG
+		       "%s: unreasonably large number of slots requested: %d\n",
+		       UINPUT_NAME, max);
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
-- 
2.43.0

[PATCH 4.19 69/96] usbnet: ipheth: race between ipheth_close and error handling

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Oliver Neukum <oneukum@suse.com>

[ Upstream commit e5876b088ba03a62124266fa20d00e65533c7269 ]

ipheth_sndbulk_callback() can submit carrier_work
as a part of its error handling. That means that
the driver must make sure that the work is cancelled
after it has made sure that no more URB can terminate
with an error condition.

Hence the order of actions in ipheth_close() needs
to be inverted.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Foster Snowhill <forst@pen.gy>
Tested-by: Georgi Valkov <gvalkov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/ipheth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c
index 5e8fd2aa1888..0a86ba028c4d 100644
--- a/drivers/net/usb/ipheth.c
+++ b/drivers/net/usb/ipheth.c
@@ -407,8 +407,8 @@ static int ipheth_close(struct net_device *net)
 {
 	struct ipheth_device *dev = netdev_priv(net);
 
-	cancel_delayed_work_sync(&dev->carrier_work);
 	netif_stop_queue(net);
+	cancel_delayed_work_sync(&dev->carrier_work);
 	return 0;
 }
 
-- 
2.43.0

[PATCH 4.19 70/96] Squashfs: sanity check symbolic link size

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Phillip Lougher <phillip@squashfs.org.uk>

[ Upstream commit 810ee43d9cd245d138a2733d87a24858a23f577d ]

Syzkiller reports a "KMSAN: uninit-value in pick_link" bug.

This is caused by an uninitialised page, which is ultimately caused
by a corrupted symbolic link size read from disk.

The reason why the corrupted symlink size causes an uninitialised
page is due to the following sequence of events:

1. squashfs_read_inode() is called to read the symbolic
   link from disk.  This assigns the corrupted value
   3875536935 to inode->i_size.

2. Later squashfs_symlink_read_folio() is called, which assigns
   this corrupted value to the length variable, which being a
   signed int, overflows producing a negative number.

3. The following loop that fills in the page contents checks that
   the copied bytes is less than length, which being negative means
   the loop is skipped, producing an uninitialised page.

This patch adds a sanity check which checks that the symbolic
link size is not larger than expected.

--

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Link: https://lore.kernel.org/r/20240811232821.13903-1-phillip@squashfs.org.uk
Reported-by: Lizhi Xu <lizhi.xu@windriver.com>
Reported-by: syzbot+24ac24ff58dc5b0d26b9@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/000000000000a90e8c061e86a76b@google.com/
V2: fix spelling mistake.
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/squashfs/inode.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/fs/squashfs/inode.c b/fs/squashfs/inode.c
index e9793b1e49a5..89ac1c6de97b 100644
--- a/fs/squashfs/inode.c
+++ b/fs/squashfs/inode.c
@@ -289,8 +289,13 @@ int squashfs_read_inode(struct inode *inode, long long ino)
 		if (err < 0)
 			goto failed_read;
 
-		set_nlink(inode, le32_to_cpu(sqsh_ino->nlink));
 		inode->i_size = le32_to_cpu(sqsh_ino->symlink_size);
+		if (inode->i_size > PAGE_SIZE) {
+			ERROR("Corrupted symlink\n");
+			return -EINVAL;
+		}
+
+		set_nlink(inode, le32_to_cpu(sqsh_ino->nlink));
 		inode->i_op = &squashfs_symlink_inode_ops;
 		inode_nohighmem(inode);
 		inode->i_data.a_ops = &squashfs_symlink_aops;
-- 
2.43.0

[PATCH 4.19 71/96] of/irq: Prevent device address out-of-bounds read in interrupt map walk

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Stefan Wiehler <stefan.wiehler@nokia.com>

[ Upstream commit b739dffa5d570b411d4bdf4bb9b8dfd6b7d72305 ]

When of_irq_parse_raw() is invoked with a device address smaller than
the interrupt parent node (from #address-cells property), KASAN detects
the following out-of-bounds read when populating the initial match table
(dyndbg="func of_irq_parse_* +p"):

  OF: of_irq_parse_one: dev=/soc@0/picasso/watchdog, index=0
  OF:  parent=/soc@0/pci@878000000000/gpio0@17,0, intsize=2
  OF:  intspec=4
  OF: of_irq_parse_raw: ipar=/soc@0/pci@878000000000/gpio0@17,0, size=2
  OF:  -> addrsize=3
  ==================================================================
  BUG: KASAN: slab-out-of-bounds in of_irq_parse_raw+0x2b8/0x8d0
  Read of size 4 at addr ffffff81beca5608 by task bash/764

  CPU: 1 PID: 764 Comm: bash Tainted: G           O       6.1.67-484c613561-nokia_sm_arm64 #1
  Hardware name: Unknown Unknown Product/Unknown Product, BIOS 2023.01-12.24.03-dirty 01/01/2023
  Call trace:
   dump_backtrace+0xdc/0x130
   show_stack+0x1c/0x30
   dump_stack_lvl+0x6c/0x84
   print_report+0x150/0x448
   kasan_report+0x98/0x140
   __asan_load4+0x78/0xa0
   of_irq_parse_raw+0x2b8/0x8d0
   of_irq_parse_one+0x24c/0x270
   parse_interrupts+0xc0/0x120
   of_fwnode_add_links+0x100/0x2d0
   fw_devlink_parse_fwtree+0x64/0xc0
   device_add+0xb38/0xc30
   of_device_add+0x64/0x90
   of_platform_device_create_pdata+0xd0/0x170
   of_platform_bus_create+0x244/0x600
   of_platform_notify+0x1b0/0x254
   blocking_notifier_call_chain+0x9c/0xd0
   __of_changeset_entry_notify+0x1b8/0x230
   __of_changeset_apply_notify+0x54/0xe4
   of_overlay_fdt_apply+0xc04/0xd94
   ...

  The buggy address belongs to the object at ffffff81beca5600
   which belongs to the cache kmalloc-128 of size 128
  The buggy address is located 8 bytes inside of
   128-byte region [ffffff81beca5600, ffffff81beca5680)

  The buggy address belongs to the physical page:
  page:00000000230d3d03 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1beca4
  head:00000000230d3d03 order:1 compound_mapcount:0 compound_pincount:0
  flags: 0x8000000000010200(slab|head|zone=2)
  raw: 8000000000010200 0000000000000000 dead000000000122 ffffff810000c300
  raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
  page dumped because: kasan: bad access detected

  Memory state around the buggy address:
   ffffff81beca5500: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
   ffffff81beca5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
  >ffffff81beca5600: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                        ^
   ffffff81beca5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
   ffffff81beca5700: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
  ==================================================================
  OF:  -> got it !

Prevent the out-of-bounds read by copying the device address into a
buffer of sufficient size.

Signed-off-by: Stefan Wiehler <stefan.wiehler@nokia.com>
Link: https://lore.kernel.org/r/20240812100652.3800963-1-stefan.wiehler@nokia.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/of/irq.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 02ad93a304a4..f06c9df60e34 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -289,7 +289,8 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
 	struct device_node *p;
 	const __be32 *addr;
 	u32 intsize;
-	int i, res;
+	int i, res, addr_len;
+	__be32 addr_buf[3] = { 0 };
 
 	pr_debug("of_irq_parse_one: dev=%pOF, index=%d\n", device, index);
 
@@ -298,13 +299,19 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
 		return of_irq_parse_oldworld(device, index, out_irq);
 
 	/* Get the reg property (if any) */
-	addr = of_get_property(device, "reg", NULL);
+	addr = of_get_property(device, "reg", &addr_len);
+
+	/* Prevent out-of-bounds read in case of longer interrupt parent address size */
+	if (addr_len > (3 * sizeof(__be32)))
+		addr_len = 3 * sizeof(__be32);
+	if (addr)
+		memcpy(addr_buf, addr, addr_len);
 
 	/* Try the new-style interrupts-extended first */
 	res = of_parse_phandle_with_args(device, "interrupts-extended",
 					"#interrupt-cells", index, out_irq);
 	if (!res)
-		return of_irq_parse_raw(addr, out_irq);
+		return of_irq_parse_raw(addr_buf, out_irq);
 
 	/* Look for the interrupt parent. */
 	p = of_irq_find_parent(device);
@@ -334,7 +341,7 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
 
 
 	/* Check if there are any interrupt-map translations to process */
-	res = of_irq_parse_raw(addr, out_irq);
+	res = of_irq_parse_raw(addr_buf, out_irq);
  out:
 	of_node_put(p);
 	return res;
-- 
2.43.0

[PATCH 4.19 72/96] ata: pata_macio: Use WARN instead of BUG

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Ellerman <mpe@ellerman.id.au>

[ Upstream commit d4bc0a264fb482b019c84fbc7202dd3cab059087 ]

The overflow/underflow conditions in pata_macio_qc_prep() should never
happen. But if they do there's no need to kill the system entirely, a
WARN and failing the IO request should be sufficient and might allow the
system to keep running.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/ata/pata_macio.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/ata/pata_macio.c b/drivers/ata/pata_macio.c
index 765b99319d3c..7beb5dd9ff87 100644
--- a/drivers/ata/pata_macio.c
+++ b/drivers/ata/pata_macio.c
@@ -537,7 +537,8 @@ static enum ata_completion_errors pata_macio_qc_prep(struct ata_queued_cmd *qc)
 
 		while (sg_len) {
 			/* table overflow should never happen */
-			BUG_ON (pi++ >= MAX_DCMDS);
+			if (WARN_ON_ONCE(pi >= MAX_DCMDS))
+				return AC_ERR_SYSTEM;
 
 			len = (sg_len < MAX_DBDMA_SEG) ? sg_len : MAX_DBDMA_SEG;
 			table->command = cpu_to_le16(write ? OUTPUT_MORE: INPUT_MORE);
@@ -549,11 +550,13 @@ static enum ata_completion_errors pata_macio_qc_prep(struct ata_queued_cmd *qc)
 			addr += len;
 			sg_len -= len;
 			++table;
+			++pi;
 		}
 	}
 
 	/* Should never happen according to Tejun */
-	BUG_ON(!pi);
+	if (WARN_ON_ONCE(!pi))
+		return AC_ERR_SYSTEM;
 
 	/* Convert the last command to an input/output */
 	table--;
-- 
2.43.0

[PATCH 4.19 73/96] iio: buffer-dmaengine: fix releasing dma channel on error

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Lechner <dlechner@baylibre.com>

commit 84c65d8008764a8fb4e627ff02de01ec4245f2c4 upstream.

If dma_get_slave_caps() fails, we need to release the dma channel before
returning an error to avoid leaking the channel.

Fixes: 2d6ca60f3284 ("iio: Add a DMAengine framework based buffer")
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240723-iio-fix-dmaengine-free-on-error-v1-1-2c7cbc9b92ff@baylibre.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/iio/buffer/industrialio-buffer-dmaengine.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/iio/buffer/industrialio-buffer-dmaengine.c
+++ b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
@@ -159,7 +159,7 @@ struct iio_buffer *iio_dmaengine_buffer_
 
 	ret = dma_get_slave_caps(chan, &caps);
 	if (ret < 0)
-		goto err_free;
+		goto err_release;
 
 	/* Needs to be aligned to the maximum of the minimums */
 	if (caps.src_addr_widths)
@@ -184,6 +184,8 @@ struct iio_buffer *iio_dmaengine_buffer_
 
 	return &dmaengine_buffer->queue.buffer;
 
+err_release:
+	dma_release_channel(chan);
 err_free:
 	kfree(dmaengine_buffer);
 	return ERR_PTR(ret);

[PATCH 4.19 74/96] iio: fix scale application in iio_convert_raw_to_processed_unlocked

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matteo Martelli <matteomartelli3@gmail.com>

commit 8a3dcc970dc57b358c8db2702447bf0af4e0d83a upstream.

When the scale_type is IIO_VAL_INT_PLUS_MICRO or IIO_VAL_INT_PLUS_NANO
the scale passed as argument is only applied to the fractional part of
the value. Fix it by also multiplying the integer part by the scale
provided.

Fixes: 48e44ce0f881 ("iio:inkern: Add function to read the processed value")
Signed-off-by: Matteo Martelli <matteomartelli3@gmail.com>
Link: https://patch.msgid.link/20240730-iio-fix-scale-v1-1-6246638c8daa@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/iio/inkern.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -640,17 +640,17 @@ static int iio_convert_raw_to_processed_
 		break;
 	case IIO_VAL_INT_PLUS_MICRO:
 		if (scale_val2 < 0)
-			*processed = -raw64 * scale_val;
+			*processed = -raw64 * scale_val * scale;
 		else
-			*processed = raw64 * scale_val;
+			*processed = raw64 * scale_val * scale;
 		*processed += div_s64(raw64 * (s64)scale_val2 * scale,
 				      1000000LL);
 		break;
 	case IIO_VAL_INT_PLUS_NANO:
 		if (scale_val2 < 0)
-			*processed = -raw64 * scale_val;
+			*processed = -raw64 * scale_val * scale;
 		else
-			*processed = raw64 * scale_val;
+			*processed = raw64 * scale_val * scale;
 		*processed += div_s64(raw64 * (s64)scale_val2 * scale,
 				      1000000000LL);
 		break;

[PATCH 4.19 75/96] nvmem: Fix return type of devm_nvmem_device_get() in kerneldoc

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Geert Uytterhoeven <geert+renesas@glider.be>

commit c69f37f6559a8948d70badd2b179db7714dedd62 upstream.

devm_nvmem_device_get() returns an nvmem device, not an nvmem cell.

Fixes: e2a5402ec7c6d044 ("nvmem: Add nvmem_device based consumer apis.")
Cc: stable <stable@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240902142510.71096-3-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/nvmem/core.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -794,13 +794,13 @@ void nvmem_device_put(struct nvmem_devic
 EXPORT_SYMBOL_GPL(nvmem_device_put);
 
 /**
- * devm_nvmem_device_get() - Get nvmem cell of device form a given id
+ * devm_nvmem_device_get() - Get nvmem device of device form a given id
  *
  * @dev: Device that requests the nvmem device.
  * @id: name id for the requested nvmem device.
  *
- * Return: ERR_PTR() on error or a valid pointer to a struct nvmem_cell
- * on success.  The nvmem_cell will be freed by the automatically once the
+ * Return: ERR_PTR() on error or a valid pointer to a struct nvmem_device
+ * on success.  The nvmem_device will be freed by the automatically once the
  * device is freed.
  */
 struct nvmem_device *devm_nvmem_device_get(struct device *dev, const char *id)

[PATCH 4.19 76/96] uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Saurabh Sengar <ssengar@linux.microsoft.com>

commit fb1adbd7e50f3d2de56d0a2bb0700e2e819a329e upstream.

For primary VM Bus channels, primary_channel pointer is always NULL. This
pointer is valid only for the secondary channels. Also, rescind callback
is meant for primary channels only.

Fix NULL pointer dereference by retrieving the device_obj from the parent
for the primary channel.

Cc: stable@vger.kernel.org
Fixes: ca3cda6fcf1e ("uio_hv_generic: add rescind support")
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Signed-off-by: Naman Jain <namjain@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240829071312.1595-2-namjain@linux.microsoft.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/uio/uio_hv_generic.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/uio/uio_hv_generic.c
+++ b/drivers/uio/uio_hv_generic.c
@@ -104,10 +104,11 @@ static void hv_uio_channel_cb(void *cont
 
 /*
  * Callback from vmbus_event when channel is rescinded.
+ * It is meant for rescind of primary channels only.
  */
 static void hv_uio_rescind(struct vmbus_channel *channel)
 {
-	struct hv_device *hv_dev = channel->primary_channel->device_obj;
+	struct hv_device *hv_dev = channel->device_obj;
 	struct hv_uio_private_data *pdata = hv_get_drvdata(hv_dev);
 
 	/*

[PATCH 4.19 77/96] Drivers: hv: vmbus: Fix rescind handling in uio_hv_generic

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Naman Jain <namjain@linux.microsoft.com>

commit 6fd28941447bf2c8ca0f26fda612a1cabc41663f upstream.

Rescind offer handling relies on rescind callbacks for some of the
resources cleanup, if they are registered. It does not unregister
vmbus device for the primary channel closure, when callback is
registered. Without it, next onoffer does not come, rescind flag
remains set and device goes to unusable state.

Add logic to unregister vmbus for the primary channel in rescind callback
to ensure channel removal and relid release, and to ensure that next
onoffer can be received and handled properly.

Cc: stable@vger.kernel.org
Fixes: ca3cda6fcf1e ("uio_hv_generic: add rescind support")
Signed-off-by: Naman Jain <namjain@linux.microsoft.com>
Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Link: https://lore.kernel.org/r/20240829071312.1595-3-namjain@linux.microsoft.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/hv/vmbus_drv.c       |    1 +
 drivers/uio/uio_hv_generic.c |    8 ++++++++
 2 files changed, 9 insertions(+)

--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -1973,6 +1973,7 @@ acpi_walk_err:
 		vmbus_acpi_remove(device);
 	return ret_val;
 }
+EXPORT_SYMBOL_GPL(vmbus_device_unregister);
 
 static const struct acpi_device_id vmbus_acpi_device_ids[] = {
 	{"VMBUS", 0},
--- a/drivers/uio/uio_hv_generic.c
+++ b/drivers/uio/uio_hv_generic.c
@@ -119,6 +119,14 @@ static void hv_uio_rescind(struct vmbus_
 
 	/* Wake up reader */
 	uio_event_notify(&pdata->info);
+
+	/*
+	 * With rescind callback registered, rescind path will not unregister the device
+	 * from vmbus when the primary channel is rescinded.
+	 * Without it, rescind handling is incomplete and next onoffer msg does not come.
+	 * Unregister the device from vmbus here.
+	 */
+	vmbus_device_unregister(channel->device_obj);
 }
 
 /* Sysfs API to allow mmap of the ring buffers

[PATCH 4.19 78/96] VMCI: Fix use-after-free when removing resource in vmci_resource_remove()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Fernandez Gonzalez <david.fernandez.gonzalez@oracle.com>

commit 48b9a8dabcc3cf5f961b2ebcd8933bf9204babb7 upstream.

When removing a resource from vmci_resource_table in
vmci_resource_remove(), the search is performed using the resource
handle by comparing context and resource fields.

It is possible though to create two resources with different types
but same handle (same context and resource fields).

When trying to remove one of the resources, vmci_resource_remove()
may not remove the intended one, but the object will still be freed
as in the case of the datagram type in vmci_datagram_destroy_handle().
vmci_resource_table will still hold a pointer to this freed resource
leading to a use-after-free vulnerability.

BUG: KASAN: use-after-free in vmci_handle_is_equal include/linux/vmw_vmci_defs.h:142 [inline]
BUG: KASAN: use-after-free in vmci_resource_remove+0x3a1/0x410 drivers/misc/vmw_vmci/vmci_resource.c:147
Read of size 4 at addr ffff88801c16d800 by task syz-executor197/1592
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x82/0xa9 lib/dump_stack.c:106
 print_address_description.constprop.0+0x21/0x366 mm/kasan/report.c:239
 __kasan_report.cold+0x7f/0x132 mm/kasan/report.c:425
 kasan_report+0x38/0x51 mm/kasan/report.c:442
 vmci_handle_is_equal include/linux/vmw_vmci_defs.h:142 [inline]
 vmci_resource_remove+0x3a1/0x410 drivers/misc/vmw_vmci/vmci_resource.c:147
 vmci_qp_broker_detach+0x89a/0x11b9 drivers/misc/vmw_vmci/vmci_queue_pair.c:2182
 ctx_free_ctx+0x473/0xbe1 drivers/misc/vmw_vmci/vmci_context.c:444
 kref_put include/linux/kref.h:65 [inline]
 vmci_ctx_put drivers/misc/vmw_vmci/vmci_context.c:497 [inline]
 vmci_ctx_destroy+0x170/0x1d6 drivers/misc/vmw_vmci/vmci_context.c:195
 vmci_host_close+0x125/0x1ac drivers/misc/vmw_vmci/vmci_host.c:143
 __fput+0x261/0xa34 fs/file_table.c:282
 task_work_run+0xf0/0x194 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x184/0x189 kernel/entry/common.c:187
 exit_to_user_mode_prepare+0x11b/0x123 kernel/entry/common.c:220
 __syscall_exit_to_user_mode_work kernel/entry/common.c:302 [inline]
 syscall_exit_to_user_mode+0x18/0x42 kernel/entry/common.c:313
 do_syscall_64+0x41/0x85 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x6e/0x0

This change ensures the type is also checked when removing
the resource from vmci_resource_table in vmci_resource_remove().

Fixes: bc63dedb7d46 ("VMCI: resource object implementation.")
Cc: stable@vger.kernel.org
Reported-by: George Kennedy <george.kennedy@oracle.com>
Signed-off-by: David Fernandez Gonzalez <david.fernandez.gonzalez@oracle.com>
Link: https://lore.kernel.org/r/20240828154338.754746-1-david.fernandez.gonzalez@oracle.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/misc/vmw_vmci/vmci_resource.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/misc/vmw_vmci/vmci_resource.c
+++ b/drivers/misc/vmw_vmci/vmci_resource.c
@@ -152,7 +152,8 @@ void vmci_resource_remove(struct vmci_re
 	spin_lock(&vmci_resource_table.lock);
 
 	hlist_for_each_entry(r, &vmci_resource_table.entries[idx], node) {
-		if (vmci_handle_is_equal(r->handle, resource->handle)) {
+		if (vmci_handle_is_equal(r->handle, resource->handle) &&
+		    resource->type == r->type) {
 			hlist_del_init_rcu(&r->node);
 			break;
 		}

[PATCH 4.19 79/96] clocksource/drivers/imx-tpm: Fix return -ETIME when delta exceeds INT_MAX

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jacky Bai <ping.bai@nxp.com>

commit 5b8843fcd49827813da80c0f590a17ae4ce93c5d upstream.

In tpm_set_next_event(delta), return -ETIME by wrong cast to int when delta
is larger than INT_MAX.

For example:

tpm_set_next_event(delta = 0xffff_fffe)
{
        ...
        next = tpm_read_counter(); // assume next is 0x10
        next += delta; // next will 0xffff_fffe + 0x10 = 0x1_0000_000e
        now = tpm_read_counter();  // now is 0x10
        ...

        return (int)(next - now) <= 0 ? -ETIME : 0;
                     ^^^^^^^^^^
                     0x1_0000_000e - 0x10 = 0xffff_fffe, which is -2 when
                     cast to int. So return -ETIME.
}

To fix this, introduce a 'prev' variable and check if 'now - prev' is
larger than delta.

Cc: stable@vger.kernel.org
Fixes: 059ab7b82eec ("clocksource/drivers/imx-tpm: Add imx tpm timer support")
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Jason Liu <jason.hui.liu@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240725193355.1436005-1-Frank.Li@nxp.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/clocksource/timer-imx-tpm.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/clocksource/timer-imx-tpm.c
+++ b/drivers/clocksource/timer-imx-tpm.c
@@ -96,10 +96,10 @@ static int __init tpm_clocksource_init(u
 static int tpm_set_next_event(unsigned long delta,
 				struct clock_event_device *evt)
 {
-	unsigned long next, now;
+	unsigned long next, prev, now;
 
-	next = tpm_read_counter();
-	next += delta;
+	prev = tpm_read_counter();
+	next = prev + delta;
 	writel(next, timer_base + TPM_C0V);
 	now = tpm_read_counter();
 
@@ -109,7 +109,7 @@ static int tpm_set_next_event(unsigned l
 	 * of writing CNT registers which may cause the min_delta event got
 	 * missed, so we need add a ETIME check here in case it happened.
 	 */
-	return (int)(next - now) <= 0 ? -ETIME : 0;
+	return (now - prev) >= delta ? -ETIME : 0;
 }
 
 static int tpm_set_state_oneshot(struct clock_event_device *evt)

[PATCH 4.19 80/96] clocksource/drivers/imx-tpm: Fix next event not taking effect sometime

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jacky Bai <ping.bai@nxp.com>

commit 3d5c2f8e75a55cfb11a85086c71996af0354a1fb upstream.

The value written into the TPM CnV can only be updated into the hardware
when the counter increases. Additional writes to the CnV write buffer are
ignored until the register has been updated. Therefore, we need to check
if the CnV has been updated before continuing. This may require waiting for
1 counter cycle in the worst case.

Cc: stable@vger.kernel.org
Fixes: 059ab7b82eec ("clocksource/drivers/imx-tpm: Add imx tpm timer support")
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Jason Liu <jason.hui.liu@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240725193355.1436005-2-Frank.Li@nxp.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/clocksource/timer-imx-tpm.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/clocksource/timer-imx-tpm.c
+++ b/drivers/clocksource/timer-imx-tpm.c
@@ -104,6 +104,14 @@ static int tpm_set_next_event(unsigned l
 	now = tpm_read_counter();
 
 	/*
+	 * Need to wait CNT increase at least 1 cycle to make sure
+	 * the C0V has been updated into HW.
+	 */
+	if ((next & 0xffffffff) != readl(timer_base + TPM_C0V))
+		while (now == tpm_read_counter())
+			;
+
+	/*
 	 * NOTE: We observed in a very small probability, the bus fabric
 	 * contention between GPU and A7 may results a few cycles delay
 	 * of writing CNT registers which may cause the min_delta event got

[PATCH 4.19 81/96] uprobes: Use kzalloc to allocate xol area

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sven Schnelle <svens@linux.ibm.com>

commit e240b0fde52f33670d1336697c22d90a4fe33c84 upstream.

To prevent unitialized members, use kzalloc to allocate
the xol area.

Fixes: b059a453b1cf1 ("x86/vdso: Add mremap hook to vm_special_mapping")
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240903102313.3402529-1-svens@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/events/uprobes.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1187,7 +1187,7 @@ static struct xol_area *__create_xol_are
 	uprobe_opcode_t insn = UPROBE_SWBP_INSN;
 	struct xol_area *area;
 
-	area = kmalloc(sizeof(*area), GFP_KERNEL);
+	area = kzalloc(sizeof(*area), GFP_KERNEL);
 	if (unlikely(!area))
 		goto out;
 
@@ -1197,7 +1197,6 @@ static struct xol_area *__create_xol_are
 		goto free_area;
 
 	area->xol_mapping.name = "[uprobes]";
-	area->xol_mapping.fault = NULL;
 	area->xol_mapping.pages = area->pages;
 	area->pages[0] = alloc_page(GFP_HIGHUSER);
 	if (!area->pages[0])

[PATCH 4.19 82/96] ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Steven Rostedt (VMware) <rostedt@goodmis.org>

[ Upstream commit bc1a72afdc4a91844928831cac85731566e03bc6 ]

When the ring buffer was first created, the iterator followed the normal
producer/consumer operations where it had both a peek() operation, that just
returned the event at the current location, and a read(), that would return
the event at the current location and also increment the iterator such that
the next peek() or read() will return the next event.

The only use of the ring_buffer_read() is currently to move the iterator to
the next location and nothing now actually reads the event it returns.
Rename this function to its actual use case to ring_buffer_iter_advance(),
which also adds the "iter" part to the name, which is more meaningful. As
the timestamp returned by ring_buffer_read() was never used, there's no
reason that this new version should bother having returning it. It will also
become a void function.

Link: http://lkml.kernel.org/r/20200317213416.018928618@goodmis.org

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Stable-dep-of: 49aa8a1f4d68 ("tracing: Avoid possible softlockup in tracing_iter_reset()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/ring_buffer.h          |  3 +--
 kernel/trace/ring_buffer.c           | 23 ++++++-----------------
 kernel/trace/trace.c                 |  4 ++--
 kernel/trace/trace_functions_graph.c |  2 +-
 4 files changed, 10 insertions(+), 22 deletions(-)

diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index 941bfd9b3c89..7c5b217347b3 100644
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -135,8 +135,7 @@ void ring_buffer_read_finish(struct ring_buffer_iter *iter);
 
 struct ring_buffer_event *
 ring_buffer_iter_peek(struct ring_buffer_iter *iter, u64 *ts);
-struct ring_buffer_event *
-ring_buffer_read(struct ring_buffer_iter *iter, u64 *ts);
+void ring_buffer_iter_advance(struct ring_buffer_iter *iter);
 void ring_buffer_iter_reset(struct ring_buffer_iter *iter);
 int ring_buffer_iter_empty(struct ring_buffer_iter *iter);
 
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index aee6eab9bb8f..6cd50fb1b8fd 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -4379,35 +4379,24 @@ ring_buffer_read_finish(struct ring_buffer_iter *iter)
 EXPORT_SYMBOL_GPL(ring_buffer_read_finish);
 
 /**
- * ring_buffer_read - read the next item in the ring buffer by the iterator
+ * ring_buffer_iter_advance - advance the iterator to the next location
  * @iter: The ring buffer iterator
- * @ts: The time stamp of the event read.
  *
- * This reads the next event in the ring buffer and increments the iterator.
+ * Move the location of the iterator such that the next read will
+ * be the next location of the iterator.
  */
-struct ring_buffer_event *
-ring_buffer_read(struct ring_buffer_iter *iter, u64 *ts)
+void ring_buffer_iter_advance(struct ring_buffer_iter *iter)
 {
-	struct ring_buffer_event *event;
 	struct ring_buffer_per_cpu *cpu_buffer = iter->cpu_buffer;
 	unsigned long flags;
 
 	raw_spin_lock_irqsave(&cpu_buffer->reader_lock, flags);
- again:
-	event = rb_iter_peek(iter, ts);
-	if (!event)
-		goto out;
-
-	if (event->type_len == RINGBUF_TYPE_PADDING)
-		goto again;
 
 	rb_advance_iter(iter);
- out:
-	raw_spin_unlock_irqrestore(&cpu_buffer->reader_lock, flags);
 
-	return event;
+	raw_spin_unlock_irqrestore(&cpu_buffer->reader_lock, flags);
 }
-EXPORT_SYMBOL_GPL(ring_buffer_read);
+EXPORT_SYMBOL_GPL(ring_buffer_iter_advance);
 
 /**
  * ring_buffer_size - return the size of the ring buffer (in bytes)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 8292c7441e23..022f50dbc456 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -3090,7 +3090,7 @@ static void trace_iterator_increment(struct trace_iterator *iter)
 
 	iter->idx++;
 	if (buf_iter)
-		ring_buffer_read(buf_iter, NULL);
+		ring_buffer_iter_advance(buf_iter);
 }
 
 static struct trace_entry *
@@ -3250,7 +3250,7 @@ void tracing_iter_reset(struct trace_iterator *iter, int cpu)
 		if (ts >= iter->trace_buffer->time_start)
 			break;
 		entries++;
-		ring_buffer_read(buf_iter, NULL);
+		ring_buffer_iter_advance(buf_iter);
 	}
 
 	per_cpu_ptr(iter->trace_buffer->data, cpu)->skipped_entries = entries;
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 086af4f5c3e8..7add1f3ee2dd 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -726,7 +726,7 @@ get_return_for_leaf(struct trace_iterator *iter,
 
 	/* this is a leaf, now advance the iterator */
 	if (ring_iter)
-		ring_buffer_read(ring_iter, NULL);
+		ring_buffer_iter_advance(ring_iter);
 
 	return next;
 }
-- 
2.43.0

[PATCH 4.19 83/96] tracing: Avoid possible softlockup in tracing_iter_reset()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zheng Yejian <zhengyejian@huaweicloud.com>

[ Upstream commit 49aa8a1f4d6800721c7971ed383078257f12e8f9 ]

In __tracing_open(), when max latency tracers took place on the cpu,
the time start of its buffer would be updated, then event entries with
timestamps being earlier than start of the buffer would be skipped
(see tracing_iter_reset()).

Softlockup will occur if the kernel is non-preemptible and too many
entries were skipped in the loop that reset every cpu buffer, so add
cond_resched() to avoid it.

Cc: stable@vger.kernel.org
Fixes: 2f26ebd549b9a ("tracing: use timestamp to determine start of latency traces")
Link: https://lore.kernel.org/20240827124654.3817443-1-zhengyejian@huaweicloud.com
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Zheng Yejian <zhengyejian@huaweicloud.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/trace/trace.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 022f50dbc456..63c3c17d406c 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -3251,6 +3251,8 @@ void tracing_iter_reset(struct trace_iterator *iter, int cpu)
 			break;
 		entries++;
 		ring_buffer_iter_advance(buf_iter);
+		/* This could be a big loop */
+		cond_resched();
 	}
 
 	per_cpu_ptr(iter->trace_buffer->data, cpu)->skipped_entries = entries;
-- 
2.43.0

[PATCH 4.19 84/96] nilfs2: replace snprintf in show functions with sysfs_emit

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Qing Wang <wangqing@vivo.com>

[ Upstream commit 3bcd6c5bd483287f4a09d3d59a012d47677b6edc ]

Patch series "nilfs2 updates".

This patch (of 2):

coccicheck complains about the use of snprintf() in sysfs show functions.

Fix the coccicheck warning:

  WARNING: use scnprintf or sprintf.

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Link: https://lkml.kernel.org/r/1635151862-11547-1-git-send-email-konishi.ryusuke@gmail.com
Link: https://lkml.kernel.org/r/1634095759-4625-1-git-send-email-wangqing@vivo.com
Link: https://lkml.kernel.org/r/1635151862-11547-2-git-send-email-konishi.ryusuke@gmail.com
Signed-off-by: Qing Wang <wangqing@vivo.com>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stable-dep-of: 683408258917 ("nilfs2: protect references to superblock parameters exposed in sysfs")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nilfs2/sysfs.c | 76 +++++++++++++++++++++++------------------------
 1 file changed, 38 insertions(+), 38 deletions(-)

diff --git a/fs/nilfs2/sysfs.c b/fs/nilfs2/sysfs.c
index 57afd06db62d..63ab8f9e6db3 100644
--- a/fs/nilfs2/sysfs.c
+++ b/fs/nilfs2/sysfs.c
@@ -108,7 +108,7 @@ static ssize_t
 nilfs_snapshot_inodes_count_show(struct nilfs_snapshot_attr *attr,
 				 struct nilfs_root *root, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%llu\n",
+	return sysfs_emit(buf, "%llu\n",
 			(unsigned long long)atomic64_read(&root->inodes_count));
 }
 
@@ -116,7 +116,7 @@ static ssize_t
 nilfs_snapshot_blocks_count_show(struct nilfs_snapshot_attr *attr,
 				 struct nilfs_root *root, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%llu\n",
+	return sysfs_emit(buf, "%llu\n",
 			(unsigned long long)atomic64_read(&root->blocks_count));
 }
 
@@ -129,7 +129,7 @@ static ssize_t
 nilfs_snapshot_README_show(struct nilfs_snapshot_attr *attr,
 			    struct nilfs_root *root, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, snapshot_readme_str);
+	return sysfs_emit(buf, snapshot_readme_str);
 }
 
 NILFS_SNAPSHOT_RO_ATTR(inodes_count);
@@ -230,7 +230,7 @@ static ssize_t
 nilfs_mounted_snapshots_README_show(struct nilfs_mounted_snapshots_attr *attr,
 				    struct the_nilfs *nilfs, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, mounted_snapshots_readme_str);
+	return sysfs_emit(buf, mounted_snapshots_readme_str);
 }
 
 NILFS_MOUNTED_SNAPSHOTS_RO_ATTR(README);
@@ -268,7 +268,7 @@ nilfs_checkpoints_checkpoints_number_show(struct nilfs_checkpoints_attr *attr,
 
 	ncheckpoints = cpstat.cs_ncps;
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", ncheckpoints);
+	return sysfs_emit(buf, "%llu\n", ncheckpoints);
 }
 
 static ssize_t
@@ -291,7 +291,7 @@ nilfs_checkpoints_snapshots_number_show(struct nilfs_checkpoints_attr *attr,
 
 	nsnapshots = cpstat.cs_nsss;
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", nsnapshots);
+	return sysfs_emit(buf, "%llu\n", nsnapshots);
 }
 
 static ssize_t
@@ -305,7 +305,7 @@ nilfs_checkpoints_last_seg_checkpoint_show(struct nilfs_checkpoints_attr *attr,
 	last_cno = nilfs->ns_last_cno;
 	spin_unlock(&nilfs->ns_last_segment_lock);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", last_cno);
+	return sysfs_emit(buf, "%llu\n", last_cno);
 }
 
 static ssize_t
@@ -319,7 +319,7 @@ nilfs_checkpoints_next_checkpoint_show(struct nilfs_checkpoints_attr *attr,
 	cno = nilfs->ns_cno;
 	up_read(&nilfs->ns_segctor_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", cno);
+	return sysfs_emit(buf, "%llu\n", cno);
 }
 
 static const char checkpoints_readme_str[] =
@@ -335,7 +335,7 @@ static ssize_t
 nilfs_checkpoints_README_show(struct nilfs_checkpoints_attr *attr,
 				struct the_nilfs *nilfs, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, checkpoints_readme_str);
+	return sysfs_emit(buf, checkpoints_readme_str);
 }
 
 NILFS_CHECKPOINTS_RO_ATTR(checkpoints_number);
@@ -366,7 +366,7 @@ nilfs_segments_segments_number_show(struct nilfs_segments_attr *attr,
 				     struct the_nilfs *nilfs,
 				     char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%lu\n", nilfs->ns_nsegments);
+	return sysfs_emit(buf, "%lu\n", nilfs->ns_nsegments);
 }
 
 static ssize_t
@@ -374,7 +374,7 @@ nilfs_segments_blocks_per_segment_show(struct nilfs_segments_attr *attr,
 					struct the_nilfs *nilfs,
 					char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%lu\n", nilfs->ns_blocks_per_segment);
+	return sysfs_emit(buf, "%lu\n", nilfs->ns_blocks_per_segment);
 }
 
 static ssize_t
@@ -388,7 +388,7 @@ nilfs_segments_clean_segments_show(struct nilfs_segments_attr *attr,
 	ncleansegs = nilfs_sufile_get_ncleansegs(nilfs->ns_sufile);
 	up_read(&NILFS_MDT(nilfs->ns_dat)->mi_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%lu\n", ncleansegs);
+	return sysfs_emit(buf, "%lu\n", ncleansegs);
 }
 
 static ssize_t
@@ -408,7 +408,7 @@ nilfs_segments_dirty_segments_show(struct nilfs_segments_attr *attr,
 		return err;
 	}
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", sustat.ss_ndirtysegs);
+	return sysfs_emit(buf, "%llu\n", sustat.ss_ndirtysegs);
 }
 
 static const char segments_readme_str[] =
@@ -424,7 +424,7 @@ nilfs_segments_README_show(struct nilfs_segments_attr *attr,
 			    struct the_nilfs *nilfs,
 			    char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, segments_readme_str);
+	return sysfs_emit(buf, segments_readme_str);
 }
 
 NILFS_SEGMENTS_RO_ATTR(segments_number);
@@ -461,7 +461,7 @@ nilfs_segctor_last_pseg_block_show(struct nilfs_segctor_attr *attr,
 	last_pseg = nilfs->ns_last_pseg;
 	spin_unlock(&nilfs->ns_last_segment_lock);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n",
+	return sysfs_emit(buf, "%llu\n",
 			(unsigned long long)last_pseg);
 }
 
@@ -476,7 +476,7 @@ nilfs_segctor_last_seg_sequence_show(struct nilfs_segctor_attr *attr,
 	last_seq = nilfs->ns_last_seq;
 	spin_unlock(&nilfs->ns_last_segment_lock);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", last_seq);
+	return sysfs_emit(buf, "%llu\n", last_seq);
 }
 
 static ssize_t
@@ -490,7 +490,7 @@ nilfs_segctor_last_seg_checkpoint_show(struct nilfs_segctor_attr *attr,
 	last_cno = nilfs->ns_last_cno;
 	spin_unlock(&nilfs->ns_last_segment_lock);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", last_cno);
+	return sysfs_emit(buf, "%llu\n", last_cno);
 }
 
 static ssize_t
@@ -504,7 +504,7 @@ nilfs_segctor_current_seg_sequence_show(struct nilfs_segctor_attr *attr,
 	seg_seq = nilfs->ns_seg_seq;
 	up_read(&nilfs->ns_segctor_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", seg_seq);
+	return sysfs_emit(buf, "%llu\n", seg_seq);
 }
 
 static ssize_t
@@ -518,7 +518,7 @@ nilfs_segctor_current_last_full_seg_show(struct nilfs_segctor_attr *attr,
 	segnum = nilfs->ns_segnum;
 	up_read(&nilfs->ns_segctor_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", segnum);
+	return sysfs_emit(buf, "%llu\n", segnum);
 }
 
 static ssize_t
@@ -532,7 +532,7 @@ nilfs_segctor_next_full_seg_show(struct nilfs_segctor_attr *attr,
 	nextnum = nilfs->ns_nextnum;
 	up_read(&nilfs->ns_segctor_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", nextnum);
+	return sysfs_emit(buf, "%llu\n", nextnum);
 }
 
 static ssize_t
@@ -546,7 +546,7 @@ nilfs_segctor_next_pseg_offset_show(struct nilfs_segctor_attr *attr,
 	pseg_offset = nilfs->ns_pseg_offset;
 	up_read(&nilfs->ns_segctor_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%lu\n", pseg_offset);
+	return sysfs_emit(buf, "%lu\n", pseg_offset);
 }
 
 static ssize_t
@@ -560,7 +560,7 @@ nilfs_segctor_next_checkpoint_show(struct nilfs_segctor_attr *attr,
 	cno = nilfs->ns_cno;
 	up_read(&nilfs->ns_segctor_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", cno);
+	return sysfs_emit(buf, "%llu\n", cno);
 }
 
 static ssize_t
@@ -588,7 +588,7 @@ nilfs_segctor_last_seg_write_time_secs_show(struct nilfs_segctor_attr *attr,
 	ctime = nilfs->ns_ctime;
 	up_read(&nilfs->ns_segctor_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", ctime);
+	return sysfs_emit(buf, "%llu\n", ctime);
 }
 
 static ssize_t
@@ -616,7 +616,7 @@ nilfs_segctor_last_nongc_write_time_secs_show(struct nilfs_segctor_attr *attr,
 	nongc_ctime = nilfs->ns_nongc_ctime;
 	up_read(&nilfs->ns_segctor_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", nongc_ctime);
+	return sysfs_emit(buf, "%llu\n", nongc_ctime);
 }
 
 static ssize_t
@@ -630,7 +630,7 @@ nilfs_segctor_dirty_data_blocks_count_show(struct nilfs_segctor_attr *attr,
 	ndirtyblks = atomic_read(&nilfs->ns_ndirtyblks);
 	up_read(&nilfs->ns_segctor_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%u\n", ndirtyblks);
+	return sysfs_emit(buf, "%u\n", ndirtyblks);
 }
 
 static const char segctor_readme_str[] =
@@ -667,7 +667,7 @@ static ssize_t
 nilfs_segctor_README_show(struct nilfs_segctor_attr *attr,
 			  struct the_nilfs *nilfs, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, segctor_readme_str);
+	return sysfs_emit(buf, segctor_readme_str);
 }
 
 NILFS_SEGCTOR_RO_ATTR(last_pseg_block);
@@ -736,7 +736,7 @@ nilfs_superblock_sb_write_time_secs_show(struct nilfs_superblock_attr *attr,
 	sbwtime = nilfs->ns_sbwtime;
 	up_read(&nilfs->ns_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", sbwtime);
+	return sysfs_emit(buf, "%llu\n", sbwtime);
 }
 
 static ssize_t
@@ -750,7 +750,7 @@ nilfs_superblock_sb_write_count_show(struct nilfs_superblock_attr *attr,
 	sbwcount = nilfs->ns_sbwcount;
 	up_read(&nilfs->ns_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%u\n", sbwcount);
+	return sysfs_emit(buf, "%u\n", sbwcount);
 }
 
 static ssize_t
@@ -764,7 +764,7 @@ nilfs_superblock_sb_update_frequency_show(struct nilfs_superblock_attr *attr,
 	sb_update_freq = nilfs->ns_sb_update_freq;
 	up_read(&nilfs->ns_sem);
 
-	return snprintf(buf, PAGE_SIZE, "%u\n", sb_update_freq);
+	return sysfs_emit(buf, "%u\n", sb_update_freq);
 }
 
 static ssize_t
@@ -812,7 +812,7 @@ static ssize_t
 nilfs_superblock_README_show(struct nilfs_superblock_attr *attr,
 				struct the_nilfs *nilfs, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, sb_readme_str);
+	return sysfs_emit(buf, sb_readme_str);
 }
 
 NILFS_SUPERBLOCK_RO_ATTR(sb_write_time);
@@ -847,7 +847,7 @@ ssize_t nilfs_dev_revision_show(struct nilfs_dev_attr *attr,
 	u32 major = le32_to_cpu(sbp[0]->s_rev_level);
 	u16 minor = le16_to_cpu(sbp[0]->s_minor_rev_level);
 
-	return snprintf(buf, PAGE_SIZE, "%d.%d\n", major, minor);
+	return sysfs_emit(buf, "%d.%d\n", major, minor);
 }
 
 static
@@ -855,7 +855,7 @@ ssize_t nilfs_dev_blocksize_show(struct nilfs_dev_attr *attr,
 				 struct the_nilfs *nilfs,
 				 char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%u\n", nilfs->ns_blocksize);
+	return sysfs_emit(buf, "%u\n", nilfs->ns_blocksize);
 }
 
 static
@@ -866,7 +866,7 @@ ssize_t nilfs_dev_device_size_show(struct nilfs_dev_attr *attr,
 	struct nilfs_super_block **sbp = nilfs->ns_sbp;
 	u64 dev_size = le64_to_cpu(sbp[0]->s_dev_size);
 
-	return snprintf(buf, PAGE_SIZE, "%llu\n", dev_size);
+	return sysfs_emit(buf, "%llu\n", dev_size);
 }
 
 static
@@ -877,7 +877,7 @@ ssize_t nilfs_dev_free_blocks_show(struct nilfs_dev_attr *attr,
 	sector_t free_blocks = 0;
 
 	nilfs_count_free_blocks(nilfs, &free_blocks);
-	return snprintf(buf, PAGE_SIZE, "%llu\n",
+	return sysfs_emit(buf, "%llu\n",
 			(unsigned long long)free_blocks);
 }
 
@@ -888,7 +888,7 @@ ssize_t nilfs_dev_uuid_show(struct nilfs_dev_attr *attr,
 {
 	struct nilfs_super_block **sbp = nilfs->ns_sbp;
 
-	return snprintf(buf, PAGE_SIZE, "%pUb\n", sbp[0]->s_uuid);
+	return sysfs_emit(buf, "%pUb\n", sbp[0]->s_uuid);
 }
 
 static
@@ -916,7 +916,7 @@ static ssize_t nilfs_dev_README_show(struct nilfs_dev_attr *attr,
 				     struct the_nilfs *nilfs,
 				     char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, dev_readme_str);
+	return sysfs_emit(buf, dev_readme_str);
 }
 
 NILFS_DEV_RO_ATTR(revision);
@@ -1060,7 +1060,7 @@ void nilfs_sysfs_delete_device_group(struct the_nilfs *nilfs)
 static ssize_t nilfs_feature_revision_show(struct kobject *kobj,
 					    struct attribute *attr, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d.%d\n",
+	return sysfs_emit(buf, "%d.%d\n",
 			NILFS_CURRENT_REV, NILFS_MINOR_REV);
 }
 
@@ -1073,7 +1073,7 @@ static ssize_t nilfs_feature_README_show(struct kobject *kobj,
 					 struct attribute *attr,
 					 char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, features_readme_str);
+	return sysfs_emit(buf, features_readme_str);
 }
 
 NILFS_FEATURE_RO_ATTR(revision);
-- 
2.43.0

[PATCH 4.19 85/96] nilfs2: protect references to superblock parameters exposed in sysfs

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ryusuke Konishi <konishi.ryusuke@gmail.com>

[ Upstream commit 683408258917541bdb294cd717c210a04381931e ]

The superblock buffers of nilfs2 can not only be overwritten at runtime
for modifications/repairs, but they are also regularly swapped, replaced
during resizing, and even abandoned when degrading to one side due to
backing device issues.  So, accessing them requires mutual exclusion using
the reader/writer semaphore "nilfs->ns_sem".

Some sysfs attribute show methods read this superblock buffer without the
necessary mutual exclusion, which can cause problems with pointer
dereferencing and memory access, so fix it.

Link: https://lkml.kernel.org/r/20240811100320.9913-1-konishi.ryusuke@gmail.com
Fixes: da7141fb78db ("nilfs2: add /sys/fs/nilfs2/<device> group")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nilfs2/sysfs.c | 43 +++++++++++++++++++++++++++++++++----------
 1 file changed, 33 insertions(+), 10 deletions(-)

diff --git a/fs/nilfs2/sysfs.c b/fs/nilfs2/sysfs.c
index 63ab8f9e6db3..64ea44be0a64 100644
--- a/fs/nilfs2/sysfs.c
+++ b/fs/nilfs2/sysfs.c
@@ -843,9 +843,15 @@ ssize_t nilfs_dev_revision_show(struct nilfs_dev_attr *attr,
 				struct the_nilfs *nilfs,
 				char *buf)
 {
-	struct nilfs_super_block **sbp = nilfs->ns_sbp;
-	u32 major = le32_to_cpu(sbp[0]->s_rev_level);
-	u16 minor = le16_to_cpu(sbp[0]->s_minor_rev_level);
+	struct nilfs_super_block *raw_sb;
+	u32 major;
+	u16 minor;
+
+	down_read(&nilfs->ns_sem);
+	raw_sb = nilfs->ns_sbp[0];
+	major = le32_to_cpu(raw_sb->s_rev_level);
+	minor = le16_to_cpu(raw_sb->s_minor_rev_level);
+	up_read(&nilfs->ns_sem);
 
 	return sysfs_emit(buf, "%d.%d\n", major, minor);
 }
@@ -863,8 +869,13 @@ ssize_t nilfs_dev_device_size_show(struct nilfs_dev_attr *attr,
 				    struct the_nilfs *nilfs,
 				    char *buf)
 {
-	struct nilfs_super_block **sbp = nilfs->ns_sbp;
-	u64 dev_size = le64_to_cpu(sbp[0]->s_dev_size);
+	struct nilfs_super_block *raw_sb;
+	u64 dev_size;
+
+	down_read(&nilfs->ns_sem);
+	raw_sb = nilfs->ns_sbp[0];
+	dev_size = le64_to_cpu(raw_sb->s_dev_size);
+	up_read(&nilfs->ns_sem);
 
 	return sysfs_emit(buf, "%llu\n", dev_size);
 }
@@ -886,9 +897,15 @@ ssize_t nilfs_dev_uuid_show(struct nilfs_dev_attr *attr,
 			    struct the_nilfs *nilfs,
 			    char *buf)
 {
-	struct nilfs_super_block **sbp = nilfs->ns_sbp;
+	struct nilfs_super_block *raw_sb;
+	ssize_t len;
 
-	return sysfs_emit(buf, "%pUb\n", sbp[0]->s_uuid);
+	down_read(&nilfs->ns_sem);
+	raw_sb = nilfs->ns_sbp[0];
+	len = sysfs_emit(buf, "%pUb\n", raw_sb->s_uuid);
+	up_read(&nilfs->ns_sem);
+
+	return len;
 }
 
 static
@@ -896,10 +913,16 @@ ssize_t nilfs_dev_volume_name_show(struct nilfs_dev_attr *attr,
 				    struct the_nilfs *nilfs,
 				    char *buf)
 {
-	struct nilfs_super_block **sbp = nilfs->ns_sbp;
+	struct nilfs_super_block *raw_sb;
+	ssize_t len;
+
+	down_read(&nilfs->ns_sem);
+	raw_sb = nilfs->ns_sbp[0];
+	len = scnprintf(buf, sizeof(raw_sb->s_volume_name), "%s\n",
+			raw_sb->s_volume_name);
+	up_read(&nilfs->ns_sem);
 
-	return scnprintf(buf, sizeof(sbp[0]->s_volume_name), "%s\n",
-			 sbp[0]->s_volume_name);
+	return len;
 }
 
 static const char dev_readme_str[] =
-- 
2.43.0

[PATCH 4.19 86/96] netns: add pre_exit method to struct pernet_operations

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Dumazet <edumazet@google.com>

commit d7d99872c144a2c2f5d9c9d83627fa833836cba5 upstream.

Current struct pernet_operations exit() handlers are highly
discouraged to call synchronize_rcu().

There are cases where we need them, and exit_batch() does
not help the common case where a single netns is dismantled.

This patch leverages the existing synchronize_rcu() call
in cleanup_net()

Calling optional ->pre_exit() method before ->exit() or
->exit_batch() allows to benefit from a single synchronize_rcu()
call.

Note that the synchronize_rcu() calls added in this patch
are only in error paths or slow paths.

Tested:

$ time for i in {1..1000}; do unshare -n /bin/false;done

real	0m2.612s
user	0m0.171s
sys	0m2.216s

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/net/net_namespace.h |    5 +++++
 net/core/net_namespace.c    |   28 ++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -353,8 +353,13 @@ struct pernet_operations {
 	 * synchronize_rcu() related to these pernet_operations,
 	 * instead of separate synchronize_rcu() for every net.
 	 * Please, avoid synchronize_rcu() at all, where it's possible.
+	 *
+	 * Note that a combination of pre_exit() and exit() can
+	 * be used, since a synchronize_rcu() is guaranteed between
+	 * the calls.
 	 */
 	int (*init)(struct net *net);
+	void (*pre_exit)(struct net *net);
 	void (*exit)(struct net *net);
 	void (*exit_batch)(struct list_head *net_exit_list);
 	unsigned int *id;
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -154,6 +154,17 @@ static void ops_free(const struct pernet
 	}
 }
 
+static void ops_pre_exit_list(const struct pernet_operations *ops,
+			      struct list_head *net_exit_list)
+{
+	struct net *net;
+
+	if (ops->pre_exit) {
+		list_for_each_entry(net, net_exit_list, exit_list)
+			ops->pre_exit(net);
+	}
+}
+
 static void ops_exit_list(const struct pernet_operations *ops,
 			  struct list_head *net_exit_list)
 {
@@ -342,6 +353,12 @@ out_undo:
 	list_add(&net->exit_list, &net_exit_list);
 	saved_ops = ops;
 	list_for_each_entry_continue_reverse(ops, &pernet_list, list)
+		ops_pre_exit_list(ops, &net_exit_list);
+
+	synchronize_rcu();
+
+	saved_ops = ops;
+	list_for_each_entry_continue_reverse(ops, &pernet_list, list)
 		ops_exit_list(ops, &net_exit_list);
 
 	ops = saved_ops;
@@ -554,10 +571,15 @@ static void cleanup_net(struct work_stru
 		list_add_tail(&net->exit_list, &net_exit_list);
 	}
 
+	/* Run all of the network namespace pre_exit methods */
+	list_for_each_entry_reverse(ops, &pernet_list, list)
+		ops_pre_exit_list(ops, &net_exit_list);
+
 	/*
 	 * Another CPU might be rcu-iterating the list, wait for it.
 	 * This needs to be before calling the exit() notifiers, so
 	 * the rcu_barrier() below isn't sufficient alone.
+	 * Also the pre_exit() and exit() methods need this barrier.
 	 */
 	synchronize_rcu();
 
@@ -977,6 +999,8 @@ static int __register_pernet_operations(
 out_undo:
 	/* If I have an error cleanup all namespaces I initialized */
 	list_del(&ops->list);
+	ops_pre_exit_list(ops, &net_exit_list);
+	synchronize_rcu();
 	ops_exit_list(ops, &net_exit_list);
 	ops_free_list(ops, &net_exit_list);
 	return error;
@@ -991,6 +1015,8 @@ static void __unregister_pernet_operatio
 	/* See comment in __register_pernet_operations() */
 	for_each_net(net)
 		list_add_tail(&net->exit_list, &net_exit_list);
+	ops_pre_exit_list(ops, &net_exit_list);
+	synchronize_rcu();
 	ops_exit_list(ops, &net_exit_list);
 	ops_free_list(ops, &net_exit_list);
 }
@@ -1015,6 +1041,8 @@ static void __unregister_pernet_operatio
 	} else {
 		LIST_HEAD(net_exit_list);
 		list_add(&init_net.exit_list, &net_exit_list);
+		ops_pre_exit_list(ops, &net_exit_list);
+		synchronize_rcu();
 		ops_exit_list(ops, &net_exit_list);
 		ops_free_list(ops, &net_exit_list);
 	}

[PATCH 4.19 87/96] ila: call nf_unregister_net_hooks() sooner

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Dumazet <edumazet@google.com>

commit 031ae72825cef43e4650140b800ad58bf7a6a466 upstream.

syzbot found an use-after-free Read in ila_nf_input [1]

Issue here is that ila_xlat_exit_net() frees the rhashtable,
then call nf_unregister_net_hooks().

It should be done in the reverse way, with a synchronize_rcu().

This is a good match for a pre_exit() method.

[1]
 BUG: KASAN: use-after-free in rht_key_hashfn include/linux/rhashtable.h:159 [inline]
 BUG: KASAN: use-after-free in __rhashtable_lookup include/linux/rhashtable.h:604 [inline]
 BUG: KASAN: use-after-free in rhashtable_lookup include/linux/rhashtable.h:646 [inline]
 BUG: KASAN: use-after-free in rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672
Read of size 4 at addr ffff888064620008 by task ksoftirqd/0/16

CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc4-syzkaller-00238-g2ad6d23f465a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
  __dump_stack lib/dump_stack.c:93 [inline]
  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
  print_address_description mm/kasan/report.c:377 [inline]
  print_report+0x169/0x550 mm/kasan/report.c:488
  kasan_report+0x143/0x180 mm/kasan/report.c:601
  rht_key_hashfn include/linux/rhashtable.h:159 [inline]
  __rhashtable_lookup include/linux/rhashtable.h:604 [inline]
  rhashtable_lookup include/linux/rhashtable.h:646 [inline]
  rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672
  ila_lookup_wildcards net/ipv6/ila/ila_xlat.c:132 [inline]
  ila_xlat_addr net/ipv6/ila/ila_xlat.c:652 [inline]
  ila_nf_input+0x1fe/0x3c0 net/ipv6/ila/ila_xlat.c:190
  nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
  nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
  nf_hook include/linux/netfilter.h:269 [inline]
  NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
  __netif_receive_skb_one_core net/core/dev.c:5661 [inline]
  __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5775
  process_backlog+0x662/0x15b0 net/core/dev.c:6108
  __napi_poll+0xcb/0x490 net/core/dev.c:6772
  napi_poll net/core/dev.c:6841 [inline]
  net_rx_action+0x89b/0x1240 net/core/dev.c:6963
  handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
  run_ksoftirqd+0xca/0x130 kernel/softirq.c:928
  smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
  kthread+0x2f0/0x390 kernel/kthread.c:389
  ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x64620
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xbfffffff(buddy)
raw: 00fff00000000000 ffffea0000959608 ffffea00019d9408 0000000000000000
raw: 0000000000000000 0000000000000003 00000000bfffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52dc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_ZERO), pid 5242, tgid 5242 (syz-executor), ts 73611328570, free_ts 618981657187
  set_page_owner include/linux/page_owner.h:32 [inline]
  post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
  prep_new_page mm/page_alloc.c:1501 [inline]
  get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3439
  __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4695
  __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
  alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
  ___kmalloc_large_node+0x8b/0x1d0 mm/slub.c:4103
  __kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4130
  __do_kmalloc_node mm/slub.c:4146 [inline]
  __kmalloc_node_noprof+0x2d2/0x440 mm/slub.c:4164
  __kvmalloc_node_noprof+0x72/0x190 mm/util.c:650
  bucket_table_alloc lib/rhashtable.c:186 [inline]
  rhashtable_init_noprof+0x534/0xa60 lib/rhashtable.c:1071
  ila_xlat_init_net+0xa0/0x110 net/ipv6/ila/ila_xlat.c:613
  ops_init+0x359/0x610 net/core/net_namespace.c:139
  setup_net+0x515/0xca0 net/core/net_namespace.c:343
  copy_net_ns+0x4e2/0x7b0 net/core/net_namespace.c:508
  create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
  unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228
  ksys_unshare+0x619/0xc10 kernel/fork.c:3328
  __do_sys_unshare kernel/fork.c:3399 [inline]
  __se_sys_unshare kernel/fork.c:3397 [inline]
  __x64_sys_unshare+0x38/0x40 kernel/fork.c:3397
page last free pid 11846 tgid 11846 stack trace:
  reset_page_owner include/linux/page_owner.h:25 [inline]
  free_pages_prepare mm/page_alloc.c:1094 [inline]
  free_unref_page+0xd22/0xea0 mm/page_alloc.c:2612
  __folio_put+0x2c8/0x440 mm/swap.c:128
  folio_put include/linux/mm.h:1486 [inline]
  free_large_kmalloc+0x105/0x1c0 mm/slub.c:4565
  kfree+0x1c4/0x360 mm/slub.c:4588
  rhashtable_free_and_destroy+0x7c6/0x920 lib/rhashtable.c:1169
  ila_xlat_exit_net+0x55/0x110 net/ipv6/ila/ila_xlat.c:626
  ops_exit_list net/core/net_namespace.c:173 [inline]
  cleanup_net+0x802/0xcc0 net/core/net_namespace.c:640
  process_one_work kernel/workqueue.c:3231 [inline]
  process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
  worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
  kthread+0x2f0/0x390 kernel/kthread.c:389
  ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff88806461ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88806461ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888064620000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                      ^
 ffff888064620080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888064620100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff

Fixes: 7f00feaf1076 ("ila: Add generic ILA translation facility")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <tom@herbertland.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Link: https://patch.msgid.link/20240904144418.1162839-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv6/ila/ila.h      |    1 +
 net/ipv6/ila/ila_main.c |    6 ++++++
 net/ipv6/ila/ila_xlat.c |   13 +++++++++----
 3 files changed, 16 insertions(+), 4 deletions(-)

--- a/net/ipv6/ila/ila.h
+++ b/net/ipv6/ila/ila.h
@@ -118,6 +118,7 @@ int ila_lwt_init(void);
 void ila_lwt_fini(void);
 
 int ila_xlat_init_net(struct net *net);
+void ila_xlat_pre_exit_net(struct net *net);
 void ila_xlat_exit_net(struct net *net);
 
 int ila_xlat_nl_cmd_add_mapping(struct sk_buff *skb, struct genl_info *info);
--- a/net/ipv6/ila/ila_main.c
+++ b/net/ipv6/ila/ila_main.c
@@ -70,6 +70,11 @@ ila_xlat_init_fail:
 	return err;
 }
 
+static __net_exit void ila_pre_exit_net(struct net *net)
+{
+	ila_xlat_pre_exit_net(net);
+}
+
 static __net_exit void ila_exit_net(struct net *net)
 {
 	ila_xlat_exit_net(net);
@@ -77,6 +82,7 @@ static __net_exit void ila_exit_net(stru
 
 static struct pernet_operations ila_net_ops = {
 	.init = ila_init_net,
+	.pre_exit = ila_pre_exit_net,
 	.exit = ila_exit_net,
 	.id   = &ila_net_id,
 	.size = sizeof(struct ila_net),
--- a/net/ipv6/ila/ila_xlat.c
+++ b/net/ipv6/ila/ila_xlat.c
@@ -627,6 +627,15 @@ int ila_xlat_init_net(struct net *net)
 	return 0;
 }
 
+void ila_xlat_pre_exit_net(struct net *net)
+{
+	struct ila_net *ilan = net_generic(net, ila_net_id);
+
+	if (ilan->xlat.hooks_registered)
+		nf_unregister_net_hooks(net, ila_nf_hook_ops,
+					ARRAY_SIZE(ila_nf_hook_ops));
+}
+
 void ila_xlat_exit_net(struct net *net)
 {
 	struct ila_net *ilan = net_generic(net, ila_net_id);
@@ -634,10 +643,6 @@ void ila_xlat_exit_net(struct net *net)
 	rhashtable_free_and_destroy(&ilan->xlat.rhash_table, ila_free_cb, NULL);
 
 	free_bucket_spinlocks(ilan->xlat.locks);
-
-	if (ilan->xlat.hooks_registered)
-		nf_unregister_net_hooks(net, ila_nf_hook_ops,
-					ARRAY_SIZE(ila_nf_hook_ops));
 }
 
 static int ila_xlat_addr(struct sk_buff *skb, bool sir2ila)

[PATCH 4.19 88/96] ACPI: processor: Return an error if acpi_processor_get_info() fails in processor_add()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

[ Upstream commit fadf231f0a06a6748a7fc4a2c29ac9ef7bca6bfd ]

Rafael observed [1] that returning 0 from processor_add() will result in
acpi_default_enumeration() being called which will attempt to create a
platform device, but that makes little sense when the processor is known
to be not available.  So just return the error code from acpi_processor_get_info()
instead.

Link: https://lore.kernel.org/all/CAJZ5v0iKU8ra9jR+EmgxbuNm=Uwx2m1-8vn_RAZ+aCiUVLe3Pw@mail.gmail.com/ [1]
Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240529133446.28446-5-Jonathan.Cameron@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/acpi/acpi_processor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index a448cdf56718..9726516abdd5 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -391,7 +391,7 @@ static int acpi_processor_add(struct acpi_device *device,
 
 	result = acpi_processor_get_info(device);
 	if (result) /* Processor is not physically present or unavailable */
-		return 0;
+		return result;
 
 	BUG_ON(pr->id >= nr_cpu_ids);
 
-- 
2.43.0

[PATCH 4.19 89/96] ACPI: processor: Fix memory leaks in error paths of processor_add()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

[ Upstream commit 47ec9b417ed9b6b8ec2a941cd84d9de62adc358a ]

If acpi_processor_get_info() returned an error, pr and the associated
pr->throttling.shared_cpu_map were leaked.

The unwind code was in the wrong order wrt to setup, relying on
some unwind actions having no affect (clearing variables that were
never set etc).  That makes it harder to reason about so reorder
and add appropriate labels to only undo what was actually set up
in the first place.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240529133446.28446-6-Jonathan.Cameron@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/acpi/acpi_processor.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 9726516abdd5..925ceb0eddaf 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -391,7 +391,7 @@ static int acpi_processor_add(struct acpi_device *device,
 
 	result = acpi_processor_get_info(device);
 	if (result) /* Processor is not physically present or unavailable */
-		return result;
+		goto err_clear_driver_data;
 
 	BUG_ON(pr->id >= nr_cpu_ids);
 
@@ -406,7 +406,7 @@ static int acpi_processor_add(struct acpi_device *device,
 			"BIOS reported wrong ACPI id %d for the processor\n",
 			pr->id);
 		/* Give up, but do not abort the namespace scan. */
-		goto err;
+		goto err_clear_driver_data;
 	}
 	/*
 	 * processor_device_array is not cleared on errors to allow buggy BIOS
@@ -418,12 +418,12 @@ static int acpi_processor_add(struct acpi_device *device,
 	dev = get_cpu_device(pr->id);
 	if (!dev) {
 		result = -ENODEV;
-		goto err;
+		goto err_clear_per_cpu;
 	}
 
 	result = acpi_bind_one(dev, device);
 	if (result)
-		goto err;
+		goto err_clear_per_cpu;
 
 	pr->dev = dev;
 
@@ -434,10 +434,11 @@ static int acpi_processor_add(struct acpi_device *device,
 	dev_err(dev, "Processor driver could not be attached\n");
 	acpi_unbind_one(dev);
 
- err:
-	free_cpumask_var(pr->throttling.shared_cpu_map);
-	device->driver_data = NULL;
+ err_clear_per_cpu:
 	per_cpu(processors, pr->id) = NULL;
+ err_clear_driver_data:
+	device->driver_data = NULL;
+	free_cpumask_var(pr->throttling.shared_cpu_map);
  err_free_pr:
 	kfree(pr);
 	return result;
-- 
2.43.0

[PATCH 4.19 90/96] drm/i915/fence: Mark debug_fence_init_onstack() with __maybe_unused

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit fcd9e8afd546f6ced378d078345a89bf346d065e ]

When debug_fence_init_onstack() is unused (CONFIG_DRM_I915_SELFTEST=n),
it prevents kernel builds with clang, `make W=1` and CONFIG_WERROR=y:

.../i915_sw_fence.c:97:20: error: unused function 'debug_fence_init_onstack' [-Werror,-Wunused-function]
   97 | static inline void debug_fence_init_onstack(struct i915_sw_fence *fence)
      |                    ^~~~~~~~~~~~~~~~~~~~~~~~

Fix this by marking debug_fence_init_onstack() with __maybe_unused.

See also commit 6863f5643dd7 ("kbuild: allow Clang to find unused static
inline functions for W=1 build").

Fixes: 214707fc2ce0 ("drm/i915/selftests: Wrap a timer into a i915_sw_fence")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240829155950.1141978-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 5bf472058ffb43baf6a4cdfe1d7f58c4c194c688)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/i915/i915_sw_fence.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c
index 1de5173e53a2..c61e50659ed1 100644
--- a/drivers/gpu/drm/i915/i915_sw_fence.c
+++ b/drivers/gpu/drm/i915/i915_sw_fence.c
@@ -41,7 +41,7 @@ static inline void debug_fence_init(struct i915_sw_fence *fence)
 	debug_object_init(fence, &i915_sw_fence_debug_descr);
 }
 
-static inline void debug_fence_init_onstack(struct i915_sw_fence *fence)
+static inline __maybe_unused void debug_fence_init_onstack(struct i915_sw_fence *fence)
 {
 	debug_object_init_on_stack(fence, &i915_sw_fence_debug_descr);
 }
@@ -84,7 +84,7 @@ static inline void debug_fence_init(struct i915_sw_fence *fence)
 {
 }
 
-static inline void debug_fence_init_onstack(struct i915_sw_fence *fence)
+static inline __maybe_unused void debug_fence_init_onstack(struct i915_sw_fence *fence)
 {
 }
 
-- 
2.43.0

[PATCH 4.19 91/96] drm/i915/fence: Mark debug_fence_free() with __maybe_unused

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit f99999536128b14b5d765a9982763b5134efdd79 ]

When debug_fence_free() is unused
(CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS=n), it prevents kernel builds
with clang, `make W=1` and CONFIG_WERROR=y:

.../i915_sw_fence.c:118:20: error: unused function 'debug_fence_free' [-Werror,-Wunused-function]
  118 | static inline void debug_fence_free(struct i915_sw_fence *fence)
      |                    ^~~~~~~~~~~~~~~~

Fix this by marking debug_fence_free() with __maybe_unused.

See also commit 6863f5643dd7 ("kbuild: allow Clang to find unused static
inline functions for W=1 build").

Fixes: fc1584059d6c ("drm/i915: Integrate i915_sw_fence with debugobjects")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240829155950.1141978-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
(cherry picked from commit 8be4dce5ea6f2368cc25edc71989c4690fa66964)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/i915/i915_sw_fence.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_sw_fence.c b/drivers/gpu/drm/i915/i915_sw_fence.c
index c61e50659ed1..bcc997d217c2 100644
--- a/drivers/gpu/drm/i915/i915_sw_fence.c
+++ b/drivers/gpu/drm/i915/i915_sw_fence.c
@@ -67,7 +67,7 @@ static inline void debug_fence_destroy(struct i915_sw_fence *fence)
 	debug_object_destroy(fence, &i915_sw_fence_debug_descr);
 }
 
-static inline void debug_fence_free(struct i915_sw_fence *fence)
+static inline __maybe_unused void debug_fence_free(struct i915_sw_fence *fence)
 {
 	debug_object_free(fence, &i915_sw_fence_debug_descr);
 	smp_wmb(); /* flush the change in state before reallocation */
@@ -105,7 +105,7 @@ static inline void debug_fence_destroy(struct i915_sw_fence *fence)
 {
 }
 
-static inline void debug_fence_free(struct i915_sw_fence *fence)
+static inline __maybe_unused void debug_fence_free(struct i915_sw_fence *fence)
 {
 }
 
-- 
2.43.0

[PATCH 4.19 92/96] rtmutex: Drop rt_mutex::wait_lock before scheduling

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Roland Xu <mu001999@outlook.com>

commit d33d26036a0274b472299d7dcdaa5fb34329f91b upstream.

rt_mutex_handle_deadlock() is called with rt_mutex::wait_lock held.  In the
good case it returns with the lock held and in the deadlock case it emits a
warning and goes into an endless scheduling loop with the lock held, which
triggers the 'scheduling in atomic' warning.

Unlock rt_mutex::wait_lock in the dead lock case before issuing the warning
and dropping into the schedule for ever loop.

[ tglx: Moved unlock before the WARN(), removed the pointless comment,
  	massaged changelog, added Fixes tag ]

Fixes: 3d5c9340d194 ("rtmutex: Handle deadlock detection smarter")
Signed-off-by: Roland Xu <mu001999@outlook.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/ME0P300MB063599BEF0743B8FA339C2CECC802@ME0P300MB0635.AUSP300.PROD.OUTLOOK.COM
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/locking/rtmutex.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -1205,6 +1205,7 @@ __rt_mutex_slowlock(struct rt_mutex *loc
 }
 
 static void rt_mutex_handle_deadlock(int res, int detect_deadlock,
+				     struct rt_mutex *lock,
 				     struct rt_mutex_waiter *w)
 {
 	/*
@@ -1214,6 +1215,7 @@ static void rt_mutex_handle_deadlock(int
 	if (res != -EDEADLOCK || detect_deadlock)
 		return;
 
+	raw_spin_unlock_irq(&lock->wait_lock);
 	/*
 	 * Yell lowdly and stop the task right here.
 	 */
@@ -1269,7 +1271,7 @@ rt_mutex_slowlock(struct rt_mutex *lock,
 	if (unlikely(ret)) {
 		__set_current_state(TASK_RUNNING);
 		remove_waiter(lock, &waiter);
-		rt_mutex_handle_deadlock(ret, chwalk, &waiter);
+		rt_mutex_handle_deadlock(ret, chwalk, lock, &waiter);
 	}
 
 	/*

[PATCH 4.19 93/96] net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Daniel Borkmann <daniel@iogearbox.net>

commit 626dfed5fa3bfb41e0dffd796032b555b69f9cde upstream.

When using a BPF program on kernel_connect(), the call can return -EPERM. This
causes xs_tcp_setup_socket() to loop forever, filling up the syslog and causing
the kernel to potentially freeze up.

Neil suggested:

  This will propagate -EPERM up into other layers which might not be ready
  to handle it. It might be safer to map EPERM to an error we would be more
  likely to expect from the network system - such as ECONNREFUSED or ENETDOWN.

ECONNREFUSED as error seems reasonable. For programs setting a different error
can be out of reach (see handling in 4fbac77d2d09) in particular on kernels
which do not have f10d05966196 ("bpf: Make BPF_PROG_RUN_ARRAY return -err
instead of allow boolean"), thus given that it is better to simply remap for
consistent behavior. UDP does handle EPERM in xs_udp_send_request().

Fixes: d74bad4e74ee ("bpf: Hooks for sys_connect")
Fixes: 4fbac77d2d09 ("bpf: Hooks for sys_bind")
Co-developed-by: Lex Siegel <usiegl00@gmail.com>
Signed-off-by: Lex Siegel <usiegl00@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <trondmy@kernel.org>
Cc: Anna Schumaker <anna@kernel.org>
Link: https://github.com/cilium/cilium/issues/33395
Link: https://lore.kernel.org/bpf/171374175513.12877.8993642908082014881@noble.neil.brown.name
Link: https://patch.msgid.link/9069ec1d59e4b2129fc23433349fd5580ad43921.1720075070.git.daniel@iogearbox.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Hugo SIMELIERE <hsimeliere.opensource@witekio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/sunrpc/xprtsock.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2466,6 +2466,13 @@ static void xs_tcp_setup_socket(struct w
 	case -EALREADY:
 		xprt_unlock_connect(xprt, transport);
 		return;
+	case -EPERM:
+		/* Happens, for instance, if a BPF program is preventing
+		 * the connect. Remap the error so upper layers can better
+		 * deal with it.
+		 */
+		status = -ECONNREFUSED;
+		/* fall through */
 	case -EINVAL:
 		/* Happens, for instance, if the user specified a link
 		 * local IPv6 address without a scope-id.

[PATCH 4.19 94/96] cx82310_eth: fix error return code in cx82310_bind()

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zhang Changzhong <zhangchangzhong@huawei.com>

commit cfbaa8b33e022aca62a3f2815ffbc02874d4cb8b upstream.

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: ca139d76b0d9 ("cx82310_eth: re-enable ethernet mode after router reboot")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1605247627-15385-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/usb/cx82310_eth.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/net/usb/cx82310_eth.c
+++ b/drivers/net/usb/cx82310_eth.c
@@ -213,7 +213,8 @@ static int cx82310_bind(struct usbnet *d
 	}
 
 	/* enable ethernet mode (?) */
-	if (cx82310_enable_ethernet(dev))
+	ret = cx82310_enable_ethernet(dev);
+	if (ret)
 		goto err;
 
 	/* get the MAC address */

[PATCH 4.19 95/96] net: bridge: explicitly zero is_sticky in fdb_create

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

commit 1288aa7af20cfa25cb00cf0d77f94d1891644c83 upstream.

We need to explicitly zero is_sticky when creating a new fdb, otherwise
we might get a stale value for a new entry.

Fixes: 435f2e7cc0b7 ("net: bridge: add support for sticky fdb entries")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/bridge/br_fdb.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -512,6 +512,7 @@ static struct net_bridge_fdb_entry *fdb_
 		if (is_static)
 			set_bit(BR_FDB_STATIC, &fdb->flags);
 		fdb->offloaded = 0;
+		fdb->is_sticky = 0;
 		fdb->updated = fdb->used = jiffies;
 		if (rhashtable_lookup_insert_fast(&br->fdb_hash_tbl,
 						  &fdb->rhnode,

[PATCH 4.19 96/96] netns: restore ops before calling ops_exit_list

[Greg Kroah-Hartman]

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Li RongQing <lirongqing@baidu.com>

commit b272a0ad730103e84fb735fd0a8cc050cdf7f77c upstream.

ops has been iterated to first element when call pre_exit, and
it needs to restore from save_ops, not save ops to save_ops

Fixes: d7d99872c144 ("netns: add pre_exit method to struct pernet_operations")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/core/net_namespace.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -357,7 +357,7 @@ out_undo:
 
 	synchronize_rcu();
 
-	saved_ops = ops;
+	ops = saved_ops;
 	list_for_each_entry_continue_reverse(ops, &pernet_list, list)
 		ops_exit_list(ops, &net_exit_list);
 

Re: [PATCH 4.19 00/96] 4.19.322-rc1 review

[Shuah Khan]

On 9/10/24 03:31, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.19.322 release.
> There are 96 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 Thu, 12 Sep 2024 09:25:22 +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/v4.x/stable-review/patch-4.19.322-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-4.19.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 

Build failed with on AMD Ryzen 7 4700G with Radeon Graphics

   CC [M]  drivers/gpu/drm/amd/amdgpu/ci_smc.o
net/bridge/br_fdb.c: In function ‘fdb_create’:
net/bridge/br_fdb.c:515:20: error: ‘struct net_bridge_fdb_entry’ has no member n
amed ‘is_sticky’
   515 |                 fdb->is_sticky = 0;
       |                    ^~
make[2]: *** [scripts/Makefile.build:303: net/bridge/br_fdb.o] Error 1
make[1]: *** [scripts/Makefile.build:544: net/bridge] Error 2
make: *** [Makefile:1086: net] Error 2

Possible problem commit:

Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
     net: bridge: add support for sticky fdb entries

thanks,
-- Shuah