Date
May 23, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 31.064332] ================================================================== [ 31.064506] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 31.064657] Read of size 1 at addr fff00000c77a2dd0 by task kunit_try_catch/261 [ 31.064810] [ 31.064909] CPU: 0 UID: 0 PID: 261 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT [ 31.065162] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.065251] Hardware name: linux,dummy-virt (DT) [ 31.065731] Call trace: [ 31.065934] show_stack+0x20/0x38 (C) [ 31.066107] dump_stack_lvl+0x8c/0xd0 [ 31.066257] print_report+0x118/0x608 [ 31.066387] kasan_report+0xdc/0x128 [ 31.066595] __asan_report_load1_noabort+0x20/0x30 [ 31.066848] strnlen+0x80/0x88 [ 31.067396] kasan_strings+0x478/0xb00 [ 31.067585] kunit_try_run_case+0x170/0x3f0 [ 31.067862] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.068393] kthread+0x328/0x630 [ 31.068587] ret_from_fork+0x10/0x20 [ 31.068887] [ 31.068971] Allocated by task 261: [ 31.069166] kasan_save_stack+0x3c/0x68 [ 31.069386] kasan_save_track+0x20/0x40 [ 31.069617] kasan_save_alloc_info+0x40/0x58 [ 31.069834] __kasan_kmalloc+0xd4/0xd8 [ 31.070408] __kmalloc_cache_noprof+0x15c/0x3c0 [ 31.070664] kasan_strings+0xc8/0xb00 [ 31.070827] kunit_try_run_case+0x170/0x3f0 [ 31.071055] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.071286] kthread+0x328/0x630 [ 31.071427] ret_from_fork+0x10/0x20 [ 31.071781] [ 31.071870] Freed by task 261: [ 31.072115] kasan_save_stack+0x3c/0x68 [ 31.072268] kasan_save_track+0x20/0x40 [ 31.072415] kasan_save_free_info+0x4c/0x78 [ 31.072582] __kasan_slab_free+0x6c/0x98 [ 31.072698] kfree+0x214/0x3c8 [ 31.072926] kasan_strings+0x24c/0xb00 [ 31.073052] kunit_try_run_case+0x170/0x3f0 [ 31.073224] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 31.073383] kthread+0x328/0x630 [ 31.073494] ret_from_fork+0x10/0x20 [ 31.073582] [ 31.073630] The buggy address belongs to the object at fff00000c77a2dc0 [ 31.073630] which belongs to the cache kmalloc-32 of size 32 [ 31.073785] The buggy address is located 16 bytes inside of [ 31.073785] freed 32-byte region [fff00000c77a2dc0, fff00000c77a2de0) [ 31.074027] [ 31.074120] The buggy address belongs to the physical page: [ 31.074261] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077a2 [ 31.074482] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 31.074624] page_type: f5(slab) [ 31.074933] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 31.075216] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 31.075341] page dumped because: kasan: bad access detected [ 31.075475] [ 31.075532] Memory state around the buggy address: [ 31.075637] fff00000c77a2c80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.075776] fff00000c77a2d00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 31.075924] >fff00000c77a2d80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.076038] ^ [ 31.076580] fff00000c77a2e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 31.076784] fff00000c77a2e80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.076960] ==================================================================
[ 14.574353] ================================================================== [ 14.574758] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 14.575077] Read of size 1 at addr ffff888102714790 by task kunit_try_catch/278 [ 14.575547] [ 14.575671] CPU: 0 UID: 0 PID: 278 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7 #1 PREEMPT(voluntary) [ 14.575716] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.575728] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.575747] Call Trace: [ 14.575762] <TASK> [ 14.575777] dump_stack_lvl+0x73/0xb0 [ 14.575804] print_report+0xd1/0x650 [ 14.575826] ? __virt_addr_valid+0x1db/0x2d0 [ 14.575847] ? strnlen+0x73/0x80 [ 14.575884] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.575907] ? strnlen+0x73/0x80 [ 14.575925] kasan_report+0x141/0x180 [ 14.575948] ? strnlen+0x73/0x80 [ 14.575971] __asan_report_load1_noabort+0x18/0x20 [ 14.575992] strnlen+0x73/0x80 [ 14.576011] kasan_strings+0x615/0xe80 [ 14.576031] ? trace_hardirqs_on+0x37/0xe0 [ 14.576054] ? __pfx_kasan_strings+0x10/0x10 [ 14.576075] ? finish_task_switch.isra.0+0x153/0x700 [ 14.576098] ? __switch_to+0x5d9/0xf60 [ 14.576117] ? dequeue_task_fair+0x156/0x4e0 [ 14.576141] ? __schedule+0x10cc/0x2b30 [ 14.576163] ? __pfx_read_tsc+0x10/0x10 [ 14.576183] ? ktime_get_ts64+0x86/0x230 [ 14.576207] kunit_try_run_case+0x1a5/0x480 [ 14.576231] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.576253] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.576276] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.576308] ? __kthread_parkme+0x82/0x180 [ 14.576328] ? preempt_count_sub+0x50/0x80 [ 14.576353] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.576375] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.576398] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.576437] kthread+0x337/0x6f0 [ 14.576454] ? trace_preempt_on+0x20/0xc0 [ 14.576477] ? __pfx_kthread+0x10/0x10 [ 14.576495] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.576516] ? calculate_sigpending+0x7b/0xa0 [ 14.576537] ? __pfx_kthread+0x10/0x10 [ 14.576556] ret_from_fork+0x41/0x80 [ 14.576576] ? __pfx_kthread+0x10/0x10 [ 14.576595] ret_from_fork_asm+0x1a/0x30 [ 14.576626] </TASK> [ 14.576637] [ 14.584008] Allocated by task 278: [ 14.584186] kasan_save_stack+0x45/0x70 [ 14.584392] kasan_save_track+0x18/0x40 [ 14.584613] kasan_save_alloc_info+0x3b/0x50 [ 14.584821] __kasan_kmalloc+0xb7/0xc0 [ 14.584996] __kmalloc_cache_noprof+0x189/0x420 [ 14.585180] kasan_strings+0xc0/0xe80 [ 14.585361] kunit_try_run_case+0x1a5/0x480 [ 14.585571] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.585830] kthread+0x337/0x6f0 [ 14.585971] ret_from_fork+0x41/0x80 [ 14.586126] ret_from_fork_asm+0x1a/0x30 [ 14.586269] [ 14.586349] Freed by task 278: [ 14.586480] kasan_save_stack+0x45/0x70 [ 14.586664] kasan_save_track+0x18/0x40 [ 14.586862] kasan_save_free_info+0x3f/0x60 [ 14.587066] __kasan_slab_free+0x56/0x70 [ 14.587261] kfree+0x222/0x3f0 [ 14.587456] kasan_strings+0x2aa/0xe80 [ 14.587646] kunit_try_run_case+0x1a5/0x480 [ 14.587840] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.588016] kthread+0x337/0x6f0 [ 14.588134] ret_from_fork+0x41/0x80 [ 14.588323] ret_from_fork_asm+0x1a/0x30 [ 14.588548] [ 14.588642] The buggy address belongs to the object at ffff888102714780 [ 14.588642] which belongs to the cache kmalloc-32 of size 32 [ 14.589182] The buggy address is located 16 bytes inside of [ 14.589182] freed 32-byte region [ffff888102714780, ffff8881027147a0) [ 14.589655] [ 14.589730] The buggy address belongs to the physical page: [ 14.589903] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102714 [ 14.590145] flags: 0x200000000000000(node=0|zone=2) [ 14.590317] page_type: f5(slab) [ 14.590458] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.590727] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.591073] page dumped because: kasan: bad access detected [ 14.591340] [ 14.591454] Memory state around the buggy address: [ 14.591680] ffff888102714680: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.592002] ffff888102714700: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 14.592250] >ffff888102714780: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.592498] ^ [ 14.592628] ffff888102714800: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.592844] ffff888102714880: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.593058] ==================================================================