Date
June 2, 2025, 2:11 p.m.
| Environment | |
|---|---|
| e850-96 | |
| qemu-x86_64 |
[ 38.666061] ================================================================== [ 38.673159] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 38.679060] Read of size 1 at addr ffff00080394fc10 by task kunit_try_catch/306 [ 38.686352] [ 38.687835] CPU: 7 UID: 0 PID: 306 Comm: kunit_try_catch Tainted: G B N 6.15.1-rc1 #1 PREEMPT [ 38.687887] Tainted: [B]=BAD_PAGE, [N]=TEST [ 38.687906] Hardware name: WinLink E850-96 board (DT) [ 38.687928] Call trace: [ 38.687941] show_stack+0x20/0x38 (C) [ 38.687974] dump_stack_lvl+0x8c/0xd0 [ 38.688009] print_report+0x118/0x608 [ 38.688038] kasan_report+0xdc/0x128 [ 38.688068] __asan_report_load1_noabort+0x20/0x30 [ 38.688102] strlen+0xa8/0xb0 [ 38.688128] kasan_strings+0x418/0xb00 [ 38.688161] kunit_try_run_case+0x170/0x3f0 [ 38.688193] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 38.688231] kthread+0x328/0x630 [ 38.688262] ret_from_fork+0x10/0x20 [ 38.688295] [ 38.753191] Allocated by task 306: [ 38.756577] kasan_save_stack+0x3c/0x68 [ 38.760396] kasan_save_track+0x20/0x40 [ 38.764215] kasan_save_alloc_info+0x40/0x58 [ 38.768469] __kasan_kmalloc+0xd4/0xd8 [ 38.772203] __kmalloc_cache_noprof+0x16c/0x3c0 [ 38.776715] kasan_strings+0xc8/0xb00 [ 38.780361] kunit_try_run_case+0x170/0x3f0 [ 38.784527] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 38.789996] kthread+0x328/0x630 [ 38.793208] ret_from_fork+0x10/0x20 [ 38.796767] [ 38.798242] Freed by task 306: [ 38.801281] kasan_save_stack+0x3c/0x68 [ 38.805100] kasan_save_track+0x20/0x40 [ 38.808919] kasan_save_free_info+0x4c/0x78 [ 38.813086] __kasan_slab_free+0x6c/0x98 [ 38.816992] kfree+0x214/0x3c8 [ 38.820031] kasan_strings+0x24c/0xb00 [ 38.823763] kunit_try_run_case+0x170/0x3f0 [ 38.827929] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 38.833398] kthread+0x328/0x630 [ 38.836610] ret_from_fork+0x10/0x20 [ 38.840169] [ 38.841645] The buggy address belongs to the object at ffff00080394fc00 [ 38.841645] which belongs to the cache kmalloc-32 of size 32 [ 38.853971] The buggy address is located 16 bytes inside of [ 38.853971] freed 32-byte region [ffff00080394fc00, ffff00080394fc20) [ 38.866037] [ 38.867515] The buggy address belongs to the physical page: [ 38.873070] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x88394f [ 38.881056] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 38.887564] page_type: f5(slab) [ 38.890698] raw: 0bfffe0000000000 ffff000800002780 dead000000000122 0000000000000000 [ 38.898421] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 38.906140] page dumped because: kasan: bad access detected [ 38.911695] [ 38.913171] Memory state around the buggy address: [ 38.917950] ffff00080394fb00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 38.925154] ffff00080394fb80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 38.932359] >ffff00080394fc00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 38.939560] ^ [ 38.943296] ffff00080394fc80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 38.950501] ffff00080394fd00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 38.957702] ==================================================================
[ 19.056811] ================================================================== [ 19.057421] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 19.057762] Read of size 1 at addr ffff888101e064d0 by task kunit_try_catch/280 [ 19.058447] [ 19.058675] CPU: 1 UID: 0 PID: 280 Comm: kunit_try_catch Tainted: G B N 6.15.1-rc1 #1 PREEMPT(voluntary) [ 19.058787] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.058815] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.058861] Call Trace: [ 19.058899] <TASK> [ 19.058941] dump_stack_lvl+0x73/0xb0 [ 19.059098] print_report+0xd1/0x650 [ 19.059217] ? __virt_addr_valid+0x1db/0x2d0 [ 19.059288] ? strlen+0x8f/0xb0 [ 19.059332] ? kasan_complete_mode_report_info+0x64/0x200 [ 19.059389] ? strlen+0x8f/0xb0 [ 19.059434] kasan_report+0x141/0x180 [ 19.059481] ? strlen+0x8f/0xb0 [ 19.059527] __asan_report_load1_noabort+0x18/0x20 [ 19.059572] strlen+0x8f/0xb0 [ 19.059607] kasan_strings+0x57b/0xe80 [ 19.059653] ? trace_hardirqs_on+0x37/0xe0 [ 19.059684] ? __pfx_kasan_strings+0x10/0x10 [ 19.059708] ? finish_task_switch.isra.0+0x153/0x700 [ 19.059742] ? __switch_to+0x5d9/0xf60 [ 19.059798] ? dequeue_task_fair+0x166/0x4e0 [ 19.059848] ? __schedule+0x10cc/0x2b30 [ 19.059896] ? __pfx_read_tsc+0x10/0x10 [ 19.059935] ? ktime_get_ts64+0x86/0x230 [ 19.060048] kunit_try_run_case+0x1a5/0x480 [ 19.060159] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.060223] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 19.060279] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.060331] ? __kthread_parkme+0x82/0x180 [ 19.060380] ? preempt_count_sub+0x50/0x80 [ 19.060419] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.060446] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.060472] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.060497] kthread+0x337/0x6f0 [ 19.060516] ? trace_preempt_on+0x20/0xc0 [ 19.060542] ? __pfx_kthread+0x10/0x10 [ 19.060562] ? _raw_spin_unlock_irq+0x47/0x80 [ 19.060585] ? calculate_sigpending+0x7b/0xa0 [ 19.060610] ? __pfx_kthread+0x10/0x10 [ 19.060631] ret_from_fork+0x41/0x80 [ 19.060655] ? __pfx_kthread+0x10/0x10 [ 19.060674] ret_from_fork_asm+0x1a/0x30 [ 19.060710] </TASK> [ 19.060726] [ 19.075559] Allocated by task 280: [ 19.076065] kasan_save_stack+0x45/0x70 [ 19.076440] kasan_save_track+0x18/0x40 [ 19.076647] kasan_save_alloc_info+0x3b/0x50 [ 19.076868] __kasan_kmalloc+0xb7/0xc0 [ 19.077076] __kmalloc_cache_noprof+0x189/0x420 [ 19.077789] kasan_strings+0xc0/0xe80 [ 19.078364] kunit_try_run_case+0x1a5/0x480 [ 19.078669] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.079099] kthread+0x337/0x6f0 [ 19.079679] ret_from_fork+0x41/0x80 [ 19.080013] ret_from_fork_asm+0x1a/0x30 [ 19.080562] [ 19.080761] Freed by task 280: [ 19.081095] kasan_save_stack+0x45/0x70 [ 19.081541] kasan_save_track+0x18/0x40 [ 19.081820] kasan_save_free_info+0x3f/0x60 [ 19.082069] __kasan_slab_free+0x56/0x70 [ 19.082475] kfree+0x222/0x3f0 [ 19.082669] kasan_strings+0x2aa/0xe80 [ 19.083051] kunit_try_run_case+0x1a5/0x480 [ 19.083480] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.083740] kthread+0x337/0x6f0 [ 19.084339] ret_from_fork+0x41/0x80 [ 19.084876] ret_from_fork_asm+0x1a/0x30 [ 19.085421] [ 19.085552] The buggy address belongs to the object at ffff888101e064c0 [ 19.085552] which belongs to the cache kmalloc-32 of size 32 [ 19.086323] The buggy address is located 16 bytes inside of [ 19.086323] freed 32-byte region [ffff888101e064c0, ffff888101e064e0) [ 19.087514] [ 19.087663] The buggy address belongs to the physical page: [ 19.088492] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101e06 [ 19.089250] flags: 0x200000000000000(node=0|zone=2) [ 19.089625] page_type: f5(slab) [ 19.090141] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 19.090587] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 19.091245] page dumped because: kasan: bad access detected [ 19.091858] [ 19.091979] Memory state around the buggy address: [ 19.092307] ffff888101e06380: 00 00 00 04 fc fc fc fc fa fb fb fb fc fc fc fc [ 19.092954] ffff888101e06400: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.093532] >ffff888101e06480: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.094077] ^ [ 19.094381] ffff888101e06500: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.094867] ffff888101e06580: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 19.095195] ==================================================================