Date
June 2, 2025, 2:11 p.m.
| Environment | |
|---|---|
| e850-96 | |
| qemu-x86_64 |
[ 38.369280] ================================================================== [ 38.376376] BUG: KASAN: slab-use-after-free in kasan_strings+0x95c/0xb00 [ 38.383059] Read of size 1 at addr ffff00080394fc10 by task kunit_try_catch/306 [ 38.390349] [ 38.391834] CPU: 7 UID: 0 PID: 306 Comm: kunit_try_catch Tainted: G B N 6.15.1-rc1 #1 PREEMPT [ 38.391886] Tainted: [B]=BAD_PAGE, [N]=TEST [ 38.391903] Hardware name: WinLink E850-96 board (DT) [ 38.391924] Call trace: [ 38.391936] show_stack+0x20/0x38 (C) [ 38.391969] dump_stack_lvl+0x8c/0xd0 [ 38.392006] print_report+0x118/0x608 [ 38.392039] kasan_report+0xdc/0x128 [ 38.392067] __asan_report_load1_noabort+0x20/0x30 [ 38.392101] kasan_strings+0x95c/0xb00 [ 38.392136] kunit_try_run_case+0x170/0x3f0 [ 38.392171] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 38.392210] kthread+0x328/0x630 [ 38.392243] ret_from_fork+0x10/0x20 [ 38.392277] [ 38.454237] Allocated by task 306: [ 38.457623] kasan_save_stack+0x3c/0x68 [ 38.461442] kasan_save_track+0x20/0x40 [ 38.465262] kasan_save_alloc_info+0x40/0x58 [ 38.469515] __kasan_kmalloc+0xd4/0xd8 [ 38.473249] __kmalloc_cache_noprof+0x16c/0x3c0 [ 38.477763] kasan_strings+0xc8/0xb00 [ 38.481407] kunit_try_run_case+0x170/0x3f0 [ 38.485574] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 38.491042] kthread+0x328/0x630 [ 38.494254] ret_from_fork+0x10/0x20 [ 38.497813] [ 38.499289] Freed by task 306: [ 38.502328] kasan_save_stack+0x3c/0x68 [ 38.506146] kasan_save_track+0x20/0x40 [ 38.509966] kasan_save_free_info+0x4c/0x78 [ 38.514132] __kasan_slab_free+0x6c/0x98 [ 38.518038] kfree+0x214/0x3c8 [ 38.521077] kasan_strings+0x24c/0xb00 [ 38.524809] kunit_try_run_case+0x170/0x3f0 [ 38.528976] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 38.534444] kthread+0x328/0x630 [ 38.537656] ret_from_fork+0x10/0x20 [ 38.541215] [ 38.542690] The buggy address belongs to the object at ffff00080394fc00 [ 38.542690] which belongs to the cache kmalloc-32 of size 32 [ 38.555018] The buggy address is located 16 bytes inside of [ 38.555018] freed 32-byte region [ffff00080394fc00, ffff00080394fc20) [ 38.567083] [ 38.568562] The buggy address belongs to the physical page: [ 38.574116] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x88394f [ 38.582102] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 38.588612] page_type: f5(slab) [ 38.591745] raw: 0bfffe0000000000 ffff000800002780 dead000000000122 0000000000000000 [ 38.599467] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 38.607186] page dumped because: kasan: bad access detected [ 38.612742] [ 38.614217] Memory state around the buggy address: [ 38.618998] ffff00080394fb00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 38.626200] ffff00080394fb80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 38.633405] >ffff00080394fc00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 38.640606] ^ [ 38.644342] ffff00080394fc80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 38.651547] ffff00080394fd00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 38.658748] ==================================================================
[ 19.017677] ================================================================== [ 19.018310] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80 [ 19.019985] Read of size 1 at addr ffff888101e064d0 by task kunit_try_catch/280 [ 19.021075] [ 19.021433] CPU: 1 UID: 0 PID: 280 Comm: kunit_try_catch Tainted: G B N 6.15.1-rc1 #1 PREEMPT(voluntary) [ 19.021728] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.021775] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.021814] Call Trace: [ 19.021851] <TASK> [ 19.021888] dump_stack_lvl+0x73/0xb0 [ 19.021959] print_report+0xd1/0x650 [ 19.022000] ? __virt_addr_valid+0x1db/0x2d0 [ 19.022041] ? kasan_strings+0xcbc/0xe80 [ 19.022075] ? kasan_complete_mode_report_info+0x64/0x200 [ 19.022111] ? kasan_strings+0xcbc/0xe80 [ 19.022210] kasan_report+0x141/0x180 [ 19.022272] ? kasan_strings+0xcbc/0xe80 [ 19.022331] __asan_report_load1_noabort+0x18/0x20 [ 19.022396] kasan_strings+0xcbc/0xe80 [ 19.022435] ? trace_hardirqs_on+0x37/0xe0 [ 19.022474] ? __pfx_kasan_strings+0x10/0x10 [ 19.022508] ? finish_task_switch.isra.0+0x153/0x700 [ 19.022545] ? __switch_to+0x5d9/0xf60 [ 19.022577] ? dequeue_task_fair+0x166/0x4e0 [ 19.022616] ? __schedule+0x10cc/0x2b30 [ 19.022652] ? __pfx_read_tsc+0x10/0x10 [ 19.022685] ? ktime_get_ts64+0x86/0x230 [ 19.022726] kunit_try_run_case+0x1a5/0x480 [ 19.022786] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.022822] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 19.022850] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.022874] ? __kthread_parkme+0x82/0x180 [ 19.022899] ? preempt_count_sub+0x50/0x80 [ 19.022924] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.022950] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.022975] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.023003] kthread+0x337/0x6f0 [ 19.023023] ? trace_preempt_on+0x20/0xc0 [ 19.023050] ? __pfx_kthread+0x10/0x10 [ 19.023070] ? _raw_spin_unlock_irq+0x47/0x80 [ 19.023094] ? calculate_sigpending+0x7b/0xa0 [ 19.023128] ? __pfx_kthread+0x10/0x10 [ 19.023175] ret_from_fork+0x41/0x80 [ 19.023201] ? __pfx_kthread+0x10/0x10 [ 19.023221] ret_from_fork_asm+0x1a/0x30 [ 19.023257] </TASK> [ 19.023272] [ 19.035920] Allocated by task 280: [ 19.036512] kasan_save_stack+0x45/0x70 [ 19.036967] kasan_save_track+0x18/0x40 [ 19.037413] kasan_save_alloc_info+0x3b/0x50 [ 19.037640] __kasan_kmalloc+0xb7/0xc0 [ 19.037854] __kmalloc_cache_noprof+0x189/0x420 [ 19.038318] kasan_strings+0xc0/0xe80 [ 19.038694] kunit_try_run_case+0x1a5/0x480 [ 19.039174] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.039605] kthread+0x337/0x6f0 [ 19.039939] ret_from_fork+0x41/0x80 [ 19.040310] ret_from_fork_asm+0x1a/0x30 [ 19.040534] [ 19.040664] Freed by task 280: [ 19.040942] kasan_save_stack+0x45/0x70 [ 19.041391] kasan_save_track+0x18/0x40 [ 19.041861] kasan_save_free_info+0x3f/0x60 [ 19.042307] __kasan_slab_free+0x56/0x70 [ 19.042670] kfree+0x222/0x3f0 [ 19.042921] kasan_strings+0x2aa/0xe80 [ 19.043161] kunit_try_run_case+0x1a5/0x480 [ 19.043387] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.043902] kthread+0x337/0x6f0 [ 19.044350] ret_from_fork+0x41/0x80 [ 19.044788] ret_from_fork_asm+0x1a/0x30 [ 19.045183] [ 19.045376] The buggy address belongs to the object at ffff888101e064c0 [ 19.045376] which belongs to the cache kmalloc-32 of size 32 [ 19.046250] The buggy address is located 16 bytes inside of [ 19.046250] freed 32-byte region [ffff888101e064c0, ffff888101e064e0) [ 19.046958] [ 19.047132] The buggy address belongs to the physical page: [ 19.047516] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101e06 [ 19.048347] flags: 0x200000000000000(node=0|zone=2) [ 19.048807] page_type: f5(slab) [ 19.049146] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 19.049461] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 19.050099] page dumped because: kasan: bad access detected [ 19.050633] [ 19.050855] Memory state around the buggy address: [ 19.051188] ffff888101e06380: 00 00 00 04 fc fc fc fc fa fb fb fb fc fc fc fc [ 19.051478] ffff888101e06400: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.052067] >ffff888101e06480: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.052712] ^ [ 19.053191] ffff888101e06500: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.053487] ffff888101e06580: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 19.054078] ==================================================================