Date
June 17, 2025, 3:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 24.653089] ================================================================== [ 24.653244] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 24.653441] Read of size 1 at addr fff00000c73a8610 by task kunit_try_catch/261 [ 24.653616] [ 24.653713] CPU: 0 UID: 0 PID: 261 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT [ 24.654139] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.654256] Hardware name: linux,dummy-virt (DT) [ 24.654364] Call trace: [ 24.654601] show_stack+0x20/0x38 (C) [ 24.654908] dump_stack_lvl+0x8c/0xd0 [ 24.655055] print_report+0x118/0x608 [ 24.655179] kasan_report+0xdc/0x128 [ 24.655292] __asan_report_load1_noabort+0x20/0x30 [ 24.655416] strlen+0xa8/0xb0 [ 24.655531] kasan_strings+0x418/0xb00 [ 24.655655] kunit_try_run_case+0x170/0x3f0 [ 24.655784] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.655916] kthread+0x328/0x630 [ 24.656081] ret_from_fork+0x10/0x20 [ 24.656231] [ 24.656278] Allocated by task 261: [ 24.656354] kasan_save_stack+0x3c/0x68 [ 24.656748] kasan_save_track+0x20/0x40 [ 24.657048] kasan_save_alloc_info+0x40/0x58 [ 24.657227] __kasan_kmalloc+0xd4/0xd8 [ 24.657317] __kmalloc_cache_noprof+0x16c/0x3c0 [ 24.657417] kasan_strings+0xc8/0xb00 [ 24.657738] kunit_try_run_case+0x170/0x3f0 [ 24.657934] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.658202] kthread+0x328/0x630 [ 24.658723] ret_from_fork+0x10/0x20 [ 24.658845] [ 24.658960] Freed by task 261: [ 24.659106] kasan_save_stack+0x3c/0x68 [ 24.659276] kasan_save_track+0x20/0x40 [ 24.659407] kasan_save_free_info+0x4c/0x78 [ 24.659865] __kasan_slab_free+0x6c/0x98 [ 24.659989] kfree+0x214/0x3c8 [ 24.660209] kasan_strings+0x24c/0xb00 [ 24.660588] kunit_try_run_case+0x170/0x3f0 [ 24.660863] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.661048] kthread+0x328/0x630 [ 24.661173] ret_from_fork+0x10/0x20 [ 24.661328] [ 24.661392] The buggy address belongs to the object at fff00000c73a8600 [ 24.661392] which belongs to the cache kmalloc-32 of size 32 [ 24.661583] The buggy address is located 16 bytes inside of [ 24.661583] freed 32-byte region [fff00000c73a8600, fff00000c73a8620) [ 24.661750] [ 24.661999] The buggy address belongs to the physical page: [ 24.662318] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1073a8 [ 24.662527] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 24.662654] page_type: f5(slab) [ 24.662750] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 24.662878] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 24.662986] page dumped because: kasan: bad access detected [ 24.663065] [ 24.663111] Memory state around the buggy address: [ 24.663241] fff00000c73a8500: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.663409] fff00000c73a8580: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.663516] >fff00000c73a8600: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 24.663652] ^ [ 24.663781] fff00000c73a8680: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.663961] fff00000c73a8700: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 24.664101] ==================================================================
[ 22.468507] ================================================================== [ 22.469160] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 22.470722] Read of size 1 at addr ffff888102ef0050 by task kunit_try_catch/279 [ 22.471537] [ 22.471823] CPU: 1 UID: 0 PID: 279 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT(voluntary) [ 22.472019] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.472086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.472148] Call Trace: [ 22.472200] <TASK> [ 22.472250] dump_stack_lvl+0x73/0xb0 [ 22.472371] print_report+0xd1/0x650 [ 22.472453] ? __virt_addr_valid+0x1db/0x2d0 [ 22.472511] ? strlen+0x8f/0xb0 [ 22.472542] ? kasan_complete_mode_report_info+0x64/0x200 [ 22.472580] ? strlen+0x8f/0xb0 [ 22.472607] kasan_report+0x141/0x180 [ 22.472643] ? strlen+0x8f/0xb0 [ 22.472699] __asan_report_load1_noabort+0x18/0x20 [ 22.472737] strlen+0x8f/0xb0 [ 22.472778] kasan_strings+0x57b/0xe80 [ 22.472818] ? trace_hardirqs_on+0x37/0xe0 [ 22.472867] ? __pfx_kasan_strings+0x10/0x10 [ 22.472910] ? finish_task_switch.isra.0+0x153/0x700 [ 22.472953] ? __switch_to+0x5d9/0xf60 [ 22.472997] ? dequeue_task_fair+0x166/0x4e0 [ 22.473041] ? __schedule+0x10cc/0x2b60 [ 22.473587] ? __pfx_read_tsc+0x10/0x10 [ 22.473662] ? ktime_get_ts64+0x86/0x230 [ 22.473744] kunit_try_run_case+0x1a5/0x480 [ 22.473809] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.473848] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.473887] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.473924] ? __kthread_parkme+0x82/0x180 [ 22.474214] ? preempt_count_sub+0x50/0x80 [ 22.474267] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.474336] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.474375] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.474415] kthread+0x337/0x6f0 [ 22.474443] ? trace_preempt_on+0x20/0xc0 [ 22.474478] ? __pfx_kthread+0x10/0x10 [ 22.474507] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.474540] ? calculate_sigpending+0x7b/0xa0 [ 22.474575] ? __pfx_kthread+0x10/0x10 [ 22.474604] ret_from_fork+0x41/0x80 [ 22.474638] ? __pfx_kthread+0x10/0x10 [ 22.474668] ret_from_fork_asm+0x1a/0x30 [ 22.474714] </TASK> [ 22.474732] [ 22.494486] Allocated by task 279: [ 22.494915] kasan_save_stack+0x45/0x70 [ 22.495608] kasan_save_track+0x18/0x40 [ 22.496222] kasan_save_alloc_info+0x3b/0x50 [ 22.496710] __kasan_kmalloc+0xb7/0xc0 [ 22.497317] __kmalloc_cache_noprof+0x189/0x420 [ 22.497856] kasan_strings+0xc0/0xe80 [ 22.498672] kunit_try_run_case+0x1a5/0x480 [ 22.499277] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.499798] kthread+0x337/0x6f0 [ 22.500264] ret_from_fork+0x41/0x80 [ 22.500597] ret_from_fork_asm+0x1a/0x30 [ 22.501220] [ 22.501512] Freed by task 279: [ 22.501932] kasan_save_stack+0x45/0x70 [ 22.503358] kasan_save_track+0x18/0x40 [ 22.503770] kasan_save_free_info+0x3f/0x60 [ 22.504493] __kasan_slab_free+0x56/0x70 [ 22.504900] kfree+0x222/0x3f0 [ 22.505472] kasan_strings+0x2aa/0xe80 [ 22.505876] kunit_try_run_case+0x1a5/0x480 [ 22.506865] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.507584] kthread+0x337/0x6f0 [ 22.508160] ret_from_fork+0x41/0x80 [ 22.508575] ret_from_fork_asm+0x1a/0x30 [ 22.509147] [ 22.509434] The buggy address belongs to the object at ffff888102ef0040 [ 22.509434] which belongs to the cache kmalloc-32 of size 32 [ 22.510630] The buggy address is located 16 bytes inside of [ 22.510630] freed 32-byte region [ffff888102ef0040, ffff888102ef0060) [ 22.511841] [ 22.512302] The buggy address belongs to the physical page: [ 22.512631] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ef0 [ 22.513588] flags: 0x200000000000000(node=0|zone=2) [ 22.514429] page_type: f5(slab) [ 22.514838] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 22.515661] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 22.516342] page dumped because: kasan: bad access detected [ 22.516837] [ 22.517307] Memory state around the buggy address: [ 22.517803] ffff888102eeff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.518793] ffff888102eeff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.519539] >ffff888102ef0000: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 22.520328] ^ [ 22.520880] ffff888102ef0080: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 22.521440] ffff888102ef0100: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 22.521835] ==================================================================