From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, "Paulo Alcantara (SUSE)" <paulo@paulo.ac>,
Steve French <stfrench@microsoft.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.0 65/93] cifs: Fix slab-out-of-bounds when tracing SMB tcon
Date: Thu, 18 Apr 2019 19:57:43 +0200 [thread overview]
Message-ID: <20190418160443.923876658@linuxfoundation.org> (raw)
In-Reply-To: <20190418160436.781762249@linuxfoundation.org>
[ Upstream commit 68ddb496800acdb46172b4981dc3753ea9b39c25 ]
This patch fixes the following KASAN report:
[ 779.044746] BUG: KASAN: slab-out-of-bounds in string+0xab/0x180
[ 779.044750] Read of size 1 at addr ffff88814f327968 by task trace-cmd/2812
[ 779.044756] CPU: 1 PID: 2812 Comm: trace-cmd Not tainted 5.1.0-rc1+ #62
[ 779.044760] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-0-ga698c89-prebuilt.qemu.org 04/01/2014
[ 779.044761] Call Trace:
[ 779.044769] dump_stack+0x5b/0x90
[ 779.044775] ? string+0xab/0x180
[ 779.044781] print_address_description+0x6c/0x23c
[ 779.044787] ? string+0xab/0x180
[ 779.044792] ? string+0xab/0x180
[ 779.044797] kasan_report.cold.3+0x1a/0x32
[ 779.044803] ? string+0xab/0x180
[ 779.044809] string+0xab/0x180
[ 779.044816] ? widen_string+0x160/0x160
[ 779.044822] ? vsnprintf+0x5bf/0x7f0
[ 779.044829] vsnprintf+0x4e7/0x7f0
[ 779.044836] ? pointer+0x4a0/0x4a0
[ 779.044841] ? seq_buf_vprintf+0x79/0xc0
[ 779.044848] seq_buf_vprintf+0x62/0xc0
[ 779.044855] trace_seq_printf+0x113/0x210
[ 779.044861] ? trace_seq_puts+0x110/0x110
[ 779.044867] ? trace_raw_output_prep+0xd8/0x110
[ 779.044876] trace_raw_output_smb3_tcon_class+0x9f/0xc0
[ 779.044882] print_trace_line+0x377/0x890
[ 779.044888] ? tracing_buffers_read+0x300/0x300
[ 779.044893] ? ring_buffer_read+0x58/0x70
[ 779.044899] s_show+0x6e/0x140
[ 779.044906] seq_read+0x505/0x6a0
[ 779.044913] vfs_read+0xaf/0x1b0
[ 779.044919] ksys_read+0xa1/0x130
[ 779.044925] ? kernel_write+0xa0/0xa0
[ 779.044931] ? __do_page_fault+0x3d5/0x620
[ 779.044938] do_syscall_64+0x63/0x150
[ 779.044944] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 779.044949] RIP: 0033:0x7f62c2c2db31
[ 779.044955] Code: fe ff ff 48 8d 3d 17 9e 09 00 48 83 ec 08 e8 96 02
02 00 66 0f 1f 44 00 00 8b 05 fa fc 2c 00 48 63 ff 85 c0 75 13 31 c0
0f 05 <48> 3d 00 f0 ff ff 77 57 f3 c3 0f 1f 44 00 00 55 53 48 89 d5 48
89
[ 779.044958] RSP: 002b:00007ffd6e116678 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[ 779.044964] RAX: ffffffffffffffda RBX: 0000560a38be9260 RCX: 00007f62c2c2db31
[ 779.044966] RDX: 0000000000002000 RSI: 00007ffd6e116710 RDI: 0000000000000003
[ 779.044966] RDX: 0000000000002000 RSI: 00007ffd6e116710 RDI: 0000000000000003
[ 779.044969] RBP: 00007f62c2ef5420 R08: 0000000000000000 R09: 0000000000000003
[ 779.044972] R10: ffffffffffffffa8 R11: 0000000000000246 R12: 00007ffd6e116710
[ 779.044975] R13: 0000000000002000 R14: 0000000000000d68 R15: 0000000000002000
[ 779.044981] Allocated by task 1257:
[ 779.044987] __kasan_kmalloc.constprop.5+0xc1/0xd0
[ 779.044992] kmem_cache_alloc+0xad/0x1a0
[ 779.044997] getname_flags+0x6c/0x2a0
[ 779.045003] user_path_at_empty+0x1d/0x40
[ 779.045008] do_faccessat+0x12a/0x330
[ 779.045012] do_syscall_64+0x63/0x150
[ 779.045017] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 779.045019] Freed by task 1257:
[ 779.045023] __kasan_slab_free+0x12e/0x180
[ 779.045029] kmem_cache_free+0x85/0x1b0
[ 779.045034] filename_lookup.part.70+0x176/0x250
[ 779.045039] do_faccessat+0x12a/0x330
[ 779.045043] do_syscall_64+0x63/0x150
[ 779.045048] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 779.045052] The buggy address belongs to the object at ffff88814f326600
which belongs to the cache names_cache of size 4096
[ 779.045057] The buggy address is located 872 bytes to the right of
4096-byte region [ffff88814f326600, ffff88814f327600)
[ 779.045058] The buggy address belongs to the page:
[ 779.045062] page:ffffea00053cc800 count:1 mapcount:0 mapping:ffff88815b191b40 index:0x0 compound_mapcount: 0
[ 779.045067] flags: 0x200000000010200(slab|head)
[ 779.045075] raw: 0200000000010200 dead000000000100 dead000000000200 ffff88815b191b40
[ 779.045081] raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
[ 779.045083] page dumped because: kasan: bad access detected
[ 779.045085] Memory state around the buggy address:
[ 779.045089] ffff88814f327800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 779.045093] ffff88814f327880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 779.045097] >ffff88814f327900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 779.045099] ^
[ 779.045103] ffff88814f327980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 779.045107] ffff88814f327a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 779.045109] ==================================================================
[ 779.045110] Disabling lock debugging due to kernel taint
Correctly assign tree name str for smb3_tcon event.
Signed-off-by: Paulo Alcantara (SUSE) <paulo@paulo.ac>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/cifs/trace.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/cifs/trace.h b/fs/cifs/trace.h
index 59be48206932..b49bc925fb4f 100644
--- a/fs/cifs/trace.h
+++ b/fs/cifs/trace.h
@@ -378,19 +378,19 @@ DECLARE_EVENT_CLASS(smb3_tcon_class,
__field(unsigned int, xid)
__field(__u32, tid)
__field(__u64, sesid)
- __field(const char *, unc_name)
+ __string(name, unc_name)
__field(int, rc)
),
TP_fast_assign(
__entry->xid = xid;
__entry->tid = tid;
__entry->sesid = sesid;
- __entry->unc_name = unc_name;
+ __assign_str(name, unc_name);
__entry->rc = rc;
),
TP_printk("xid=%u sid=0x%llx tid=0x%x unc_name=%s rc=%d",
__entry->xid, __entry->sesid, __entry->tid,
- __entry->unc_name, __entry->rc)
+ __get_str(name), __entry->rc)
)
#define DEFINE_SMB3_TCON_EVENT(name) \
--
2.19.1
next prev parent reply other threads:[~2019-04-18 18:14 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-18 17:56 [PATCH 5.0 00/93] 5.0.9-stable review Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 01/93] ARC: u-boot args: check that magic number is correct Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 02/93] arc: hsdk_defconfig: Enable CONFIG_BLK_DEV_RAM Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 03/93] inotify: Fix fsnotify_mark refcount leak in inotify_update_existing_watch() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 04/93] perf/core: Restore mmap record type correctly Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 05/93] perf data: Dont store auxtrace index for directory data file Greg Kroah-Hartman
2019-04-18 19:28 ` Thomas Backlund
2019-04-19 13:25 ` Sasha Levin
2019-04-20 8:48 ` Jiri Olsa
2019-04-18 19:29 ` Dan Rue
2019-04-18 17:56 ` [PATCH 5.0 06/93] mips: bcm47xx: Enable USB power on Netgear WNDR3400v2 Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 07/93] ext4: avoid panic during forced reboot Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 08/93] ext4: add missing brelse() in add_new_gdb_meta_bg() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 09/93] ext4: report real fs size after failed resize Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 10/93] ALSA: echoaudio: add a check for ioremap_nocache Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 11/93] ALSA: sb8: add a check for request_region Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 12/93] auxdisplay: hd44780: Fix memory leak on ->remove() Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 13/93] drm/udl: use drm_gem_object_put_unlocked Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 14/93] IB/mlx4: Fix race condition between catas error reset and aliasguid flows Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 15/93] i40iw: Avoid panic when handling the inetdev event Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 16/93] mmc: davinci: remove extraneous __init annotation Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 17/93] ALSA: opl3: fix mismatch between snd_opl3_drum_switch definition and declaration Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 18/93] paride/pf: cleanup queues when detection fails Greg Kroah-Hartman
2019-04-19 7:13 ` nobuhiro1.iwamatsu
2019-04-19 13:30 ` Sasha Levin
2019-04-18 17:56 ` [PATCH 5.0 19/93] paride/pcd: " Greg Kroah-Hartman
2019-04-19 7:13 ` nobuhiro1.iwamatsu
2019-04-19 13:32 ` Sasha Levin
2019-04-18 17:56 ` [PATCH 5.0 20/93] thermal/intel_powerclamp: fix __percpu declaration of worker_data Greg Kroah-Hartman
2019-04-18 17:56 ` [PATCH 5.0 21/93] thermal: samsung: Fix incorrect check after code merge Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 22/93] thermal: bcm2835: Fix crash in bcm2835_thermal_debugfs Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 23/93] thermal/int340x_thermal: Add additional UUIDs Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 24/93] thermal/int340x_thermal: fix mode setting Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 25/93] thermal/intel_powerclamp: fix truncated kthread name Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 26/93] scsi: iscsi: flush running unbind operations when removing a session Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 27/93] sched/cpufreq: Fix 32-bit math overflow Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 28/93] sched/core: Fix buffer overflow in cgroup2 property cpu.max Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 29/93] x86/mm: Dont leak kernel addresses Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 30/93] tools/power turbostat: return the exit status of a command Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 31/93] scsi: core: Also call destroy_rcu_head() for passthrough requests Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 32/93] scsi: qla2xxx: Fix NULL pointer crash due to stale CPUID Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 33/93] perf stat: Fix --no-scale Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 34/93] perf list: Dont forget to drop the reference to the allocated thread_map Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 35/93] perf tools: Fix errors under optimization level -Og Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 36/93] perf config: Fix an error in the config template documentation Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 37/93] perf config: Fix a memory leak in collect_config() Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 38/93] perf build-id: Fix memory leak in print_sdt_events() Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 39/93] perf top: Delete the evlist before perf_session, fixing heap-use-after-free issue Greg Kroah-Hartman
2019-04-18 19:31 ` Dan Rue
2019-04-19 13:35 ` Sasha Levin
2019-04-18 19:33 ` Thomas Backlund
2019-04-18 17:57 ` [PATCH 5.0 40/93] perf top: Fix error handling in cmd_top() Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 41/93] perf hist: Add missing map__put() in error case Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 42/93] perf map: Remove map from names tree in __maps__remove() Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 43/93] perf maps: Purge all maps from the names tree Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 44/93] perf top: Fix global-buffer-overflow issue Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 45/93] perf evsel: Free evsel->counts in perf_evsel__exit() Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 46/93] perf tests: Fix a memory leak of cpu_map object in the openat_syscall_event_on_all_cpus test Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 47/93] perf tests: Fix memory leak by expr__find_other() in test__expr() Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 48/93] perf tests: Fix a memory leak in test__perf_evsel__tp_sched_test() Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 49/93] ACPI / utils: Drop reference in test for device presence Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 50/93] PM / Domains: Avoid a potential deadlock Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 51/93] blk-iolatency: #include "blk.h" Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 52/93] drm/exynos/mixer: fix MIXER shadow registry synchronisation code Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 53/93] irqchip/stm32: Dont clear rising/falling config registers at init Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 54/93] irqchip/stm32: Dont set rising configuration " Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 55/93] irqchip/mbigen: Dont clear eventid when freeing an MSI Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 56/93] x86/hpet: Prevent potential NULL pointer dereference Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 57/93] x86/hyperv: " Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 58/93] x86/cpu/cyrix: Use correct macros for Cyrix calls on Geode processors Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 59/93] drm/nouveau/debugfs: Fix check of pm_runtime_get_sync failure Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 60/93] iommu/vt-d: Check capability before disabling protected memory Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 61/93] iommu/vt-d: Save the right domain ID used by hardware Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 62/93] x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 63/93] cifs: fix that return -EINVAL when do dedupe operation Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 64/93] fix incorrect error code mapping for OBJECTID_NOT_FOUND Greg Kroah-Hartman
2019-04-18 17:57 ` Greg Kroah-Hartman [this message]
2019-04-18 17:57 ` [PATCH 5.0 66/93] x86/gart: Exclude GART aperture from kcore Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 67/93] ext4: prohibit fstrim in norecovery mode Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 68/93] lkdtm: Print real addresses Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 69/93] lkdtm: Add tests for NULL pointer dereference Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 70/93] drm/amdgpu: psp_ring_destroy cause psp->km_ring.ring_mem NULL Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 71/93] drm/panel: panel-innolux: set display off in innolux_panel_unprepare Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 72/93] net: hns3: Fix NULL deref when unloading driver Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 73/93] crypto: axis - fix for recursive locking from bottom half Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 74/93] Revert "ACPI / EC: Remove old CLEAR_ON_RESUME quirk" Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 75/93] RDMA/hns: Fix the Oops during rmmod or insmod ko when reset occurs Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 76/93] coresight: cpu-debug: Support for CA73 CPUs Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 77/93] PCI: Blacklist power management of Gigabyte X299 DESIGNARE EX PCIe ports Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 78/93] PCI/ASPM: Save LTR Capability for suspend/resume Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 79/93] f2fs: sync filesystem after roll-forward recovery Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 80/93] drm/nouveau/volt/gf117: fix speedo readout register Greg Kroah-Hartman
2019-04-18 17:57 ` [PATCH 5.0 81/93] platform/x86: intel_pmc_core: Quirk to ignore XTAL shutdown Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 82/93] ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 83/93] drm/amdkfd: use init_mqd function to allocate object for hid_mqd (CI) Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 84/93] appletalk: Fix use-after-free in atalk_proc_exit Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 85/93] cifs: return -ENODATA when deleting an xattr that does not exist Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 86/93] lib/div64.c: off by one in shift Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 87/93] rxrpc: Fix client call connect/disconnect race Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 88/93] f2fs: fix to dirty inode for i_mode recovery Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 89/93] f2fs: fix to use kvfree instead of kzfree Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 90/93] f2fs: fix to add refcount once page is tagged PG_private Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 91/93] include/linux/swap.h: use offsetof() instead of custom __swapoffset macro Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 92/93] bpf: fix use after free in bpf_evict_inode Greg Kroah-Hartman
2019-04-18 17:58 ` [PATCH 5.0 93/93] IB/hfi1: Failed to drain send queue when QP is put into error state Greg Kroah-Hartman
2019-04-19 10:08 ` [PATCH 5.0 00/93] 5.0.9-stable review Jon Hunter
2019-04-20 14:40 ` Greg Kroah-Hartman
2019-04-19 14:24 ` shuah
2019-04-20 7:05 ` Greg Kroah-Hartman
2019-04-19 19:41 ` Guenter Roeck
2019-04-19 21:00 ` Guenter Roeck
2019-04-20 7:05 ` Greg Kroah-Hartman
2019-04-20 4:52 ` Naresh Kamboju
2019-04-20 14:41 ` Greg Kroah-Hartman
2019-04-20 12:28 ` Bharath Vedartham
2019-04-20 14:41 ` Greg Kroah-Hartman
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