Date
June 17, 2025, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.229288] ================================================================== [ 19.229350] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 19.229411] Read of size 1 at addr fff00000c5211590 by task kunit_try_catch/268 [ 19.229464] [ 19.229502] CPU: 1 UID: 0 PID: 268 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250617 #1 PREEMPT [ 19.229658] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.229900] Hardware name: linux,dummy-virt (DT) [ 19.230304] Call trace: [ 19.230460] show_stack+0x20/0x38 (C) [ 19.230527] dump_stack_lvl+0x8c/0xd0 [ 19.230578] print_report+0x118/0x608 [ 19.230631] kasan_report+0xdc/0x128 [ 19.230680] __asan_report_load1_noabort+0x20/0x30 [ 19.230729] strcmp+0xc0/0xc8 [ 19.230797] kasan_strings+0x340/0xb00 [ 19.230873] kunit_try_run_case+0x170/0x3f0 [ 19.231331] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.231484] kthread+0x328/0x630 [ 19.231551] ret_from_fork+0x10/0x20 [ 19.231703] [ 19.231732] Allocated by task 268: [ 19.231763] kasan_save_stack+0x3c/0x68 [ 19.232030] kasan_save_track+0x20/0x40 [ 19.232120] kasan_save_alloc_info+0x40/0x58 [ 19.232210] __kasan_kmalloc+0xd4/0xd8 [ 19.232253] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.232298] kasan_strings+0xc8/0xb00 [ 19.232337] kunit_try_run_case+0x170/0x3f0 [ 19.232378] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.232424] kthread+0x328/0x630 [ 19.232470] ret_from_fork+0x10/0x20 [ 19.232509] [ 19.232531] Freed by task 268: [ 19.232660] kasan_save_stack+0x3c/0x68 [ 19.232702] kasan_save_track+0x20/0x40 [ 19.232742] kasan_save_free_info+0x4c/0x78 [ 19.232780] __kasan_slab_free+0x6c/0x98 [ 19.233280] kfree+0x214/0x3c8 [ 19.233320] kasan_strings+0x24c/0xb00 [ 19.233360] kunit_try_run_case+0x170/0x3f0 [ 19.233401] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.233852] kthread+0x328/0x630 [ 19.233954] ret_from_fork+0x10/0x20 [ 19.234056] [ 19.234084] The buggy address belongs to the object at fff00000c5211580 [ 19.234084] which belongs to the cache kmalloc-32 of size 32 [ 19.234303] The buggy address is located 16 bytes inside of [ 19.234303] freed 32-byte region [fff00000c5211580, fff00000c52115a0) [ 19.234462] [ 19.234494] The buggy address belongs to the physical page: [ 19.234580] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105211 [ 19.234639] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.234691] page_type: f5(slab) [ 19.234735] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 19.234790] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 19.234835] page dumped because: kasan: bad access detected [ 19.234880] [ 19.234945] Memory state around the buggy address: [ 19.234980] fff00000c5211480: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 19.235061] fff00000c5211500: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 19.235107] >fff00000c5211580: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.235536] ^ [ 19.235788] fff00000c5211600: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 19.235961] fff00000c5211680: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.236004] ==================================================================
[ 20.799113] ================================================================== [ 20.801709] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 20.802243] Read of size 1 at addr ffff88810383f710 by task kunit_try_catch/286 [ 20.803059] [ 20.803349] CPU: 1 UID: 0 PID: 286 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250617 #1 PREEMPT(voluntary) [ 20.803648] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.803692] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 20.803753] Call Trace: [ 20.803776] <TASK> [ 20.803800] dump_stack_lvl+0x73/0xb0 [ 20.803869] print_report+0xd1/0x650 [ 20.803944] ? __virt_addr_valid+0x1db/0x2d0 [ 20.804017] ? strcmp+0xb0/0xc0 [ 20.804109] ? kasan_complete_mode_report_info+0x64/0x200 [ 20.804211] ? strcmp+0xb0/0xc0 [ 20.804284] kasan_report+0x141/0x180 [ 20.804401] ? strcmp+0xb0/0xc0 [ 20.804486] __asan_report_load1_noabort+0x18/0x20 [ 20.804558] strcmp+0xb0/0xc0 [ 20.804630] kasan_strings+0x431/0xe80 [ 20.804701] ? trace_hardirqs_on+0x37/0xe0 [ 20.804786] ? __pfx_kasan_strings+0x10/0x10 [ 20.804876] ? finish_task_switch.isra.0+0x153/0x700 [ 20.804949] ? __switch_to+0x47/0xf50 [ 20.804990] ? __schedule+0x10cc/0x2b60 [ 20.805022] ? __pfx_read_tsc+0x10/0x10 [ 20.805052] ? ktime_get_ts64+0x86/0x230 [ 20.805087] kunit_try_run_case+0x1a5/0x480 [ 20.805122] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.805155] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 20.805183] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 20.805232] ? __kthread_parkme+0x82/0x180 [ 20.805306] ? preempt_count_sub+0x50/0x80 [ 20.805366] ? __pfx_kunit_try_run_case+0x10/0x10 [ 20.805403] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.805439] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 20.805473] kthread+0x337/0x6f0 [ 20.805502] ? trace_preempt_on+0x20/0xc0 [ 20.805534] ? __pfx_kthread+0x10/0x10 [ 20.805562] ? _raw_spin_unlock_irq+0x47/0x80 [ 20.805598] ? calculate_sigpending+0x7b/0xa0 [ 20.805635] ? __pfx_kthread+0x10/0x10 [ 20.805667] ret_from_fork+0x116/0x1d0 [ 20.805694] ? __pfx_kthread+0x10/0x10 [ 20.805724] ret_from_fork_asm+0x1a/0x30 [ 20.805767] </TASK> [ 20.805783] [ 20.823489] Allocated by task 286: [ 20.823888] kasan_save_stack+0x45/0x70 [ 20.824322] kasan_save_track+0x18/0x40 [ 20.824703] kasan_save_alloc_info+0x3b/0x50 [ 20.825500] __kasan_kmalloc+0xb7/0xc0 [ 20.825957] __kmalloc_cache_noprof+0x189/0x420 [ 20.826802] kasan_strings+0xc0/0xe80 [ 20.827449] kunit_try_run_case+0x1a5/0x480 [ 20.827904] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.828692] kthread+0x337/0x6f0 [ 20.829072] ret_from_fork+0x116/0x1d0 [ 20.829620] ret_from_fork_asm+0x1a/0x30 [ 20.830087] [ 20.830326] Freed by task 286: [ 20.830649] kasan_save_stack+0x45/0x70 [ 20.831447] kasan_save_track+0x18/0x40 [ 20.832003] kasan_save_free_info+0x3f/0x60 [ 20.832443] __kasan_slab_free+0x56/0x70 [ 20.832806] kfree+0x222/0x3f0 [ 20.833164] kasan_strings+0x2aa/0xe80 [ 20.833530] kunit_try_run_case+0x1a5/0x480 [ 20.834148] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 20.834580] kthread+0x337/0x6f0 [ 20.834912] ret_from_fork+0x116/0x1d0 [ 20.835264] ret_from_fork_asm+0x1a/0x30 [ 20.835634] [ 20.835818] The buggy address belongs to the object at ffff88810383f700 [ 20.835818] which belongs to the cache kmalloc-32 of size 32 [ 20.838462] The buggy address is located 16 bytes inside of [ 20.838462] freed 32-byte region [ffff88810383f700, ffff88810383f720) [ 20.840178] [ 20.840646] The buggy address belongs to the physical page: [ 20.841193] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10383f [ 20.841455] flags: 0x200000000000000(node=0|zone=2) [ 20.841629] page_type: f5(slab) [ 20.841762] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 20.843588] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 20.844341] page dumped because: kasan: bad access detected [ 20.844789] [ 20.844973] Memory state around the buggy address: [ 20.845403] ffff88810383f600: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 20.846141] ffff88810383f680: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 20.846768] >ffff88810383f700: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 20.847725] ^ [ 20.848128] ffff88810383f780: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 20.848794] ffff88810383f800: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 20.849557] ==================================================================