Date
May 29, 2025, 7:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 24.669352] ================================================================== [ 24.669526] BUG: KASAN: slab-use-after-free in strcmp+0xc0/0xc8 [ 24.669679] Read of size 1 at addr fff00000c7876250 by task kunit_try_catch/259 [ 24.669887] [ 24.670006] CPU: 1 UID: 0 PID: 259 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT [ 24.670279] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.670433] Hardware name: linux,dummy-virt (DT) [ 24.670525] Call trace: [ 24.670623] show_stack+0x20/0x38 (C) [ 24.670801] dump_stack_lvl+0x8c/0xd0 [ 24.670979] print_report+0x118/0x608 [ 24.671148] kasan_report+0xdc/0x128 [ 24.671310] __asan_report_load1_noabort+0x20/0x30 [ 24.671490] strcmp+0xc0/0xc8 [ 24.671654] kasan_strings+0x340/0xb00 [ 24.671788] kunit_try_run_case+0x170/0x3f0 [ 24.671975] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.672123] kthread+0x328/0x630 [ 24.672336] ret_from_fork+0x10/0x20 [ 24.672505] [ 24.672562] Allocated by task 259: [ 24.672634] kasan_save_stack+0x3c/0x68 [ 24.672781] kasan_save_track+0x20/0x40 [ 24.672867] kasan_save_alloc_info+0x40/0x58 [ 24.672986] __kasan_kmalloc+0xd4/0xd8 [ 24.673077] __kmalloc_cache_noprof+0x15c/0x3c0 [ 24.673201] kasan_strings+0xc8/0xb00 [ 24.673414] kunit_try_run_case+0x170/0x3f0 [ 24.673591] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.673742] kthread+0x328/0x630 [ 24.673864] ret_from_fork+0x10/0x20 [ 24.673955] [ 24.674013] Freed by task 259: [ 24.674101] kasan_save_stack+0x3c/0x68 [ 24.674197] kasan_save_track+0x20/0x40 [ 24.674410] kasan_save_free_info+0x4c/0x78 [ 24.674513] __kasan_slab_free+0x6c/0x98 [ 24.674622] kfree+0x214/0x3c8 [ 24.674756] kasan_strings+0x24c/0xb00 [ 24.674939] kunit_try_run_case+0x170/0x3f0 [ 24.675126] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 24.675252] kthread+0x328/0x630 [ 24.675443] ret_from_fork+0x10/0x20 [ 24.675570] [ 24.675632] The buggy address belongs to the object at fff00000c7876240 [ 24.675632] which belongs to the cache kmalloc-32 of size 32 [ 24.675777] The buggy address is located 16 bytes inside of [ 24.675777] freed 32-byte region [fff00000c7876240, fff00000c7876260) [ 24.675974] [ 24.676038] The buggy address belongs to the physical page: [ 24.676137] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107876 [ 24.676295] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 24.676436] page_type: f5(slab) [ 24.676601] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 24.676728] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 24.676868] page dumped because: kasan: bad access detected [ 24.677028] [ 24.677109] Memory state around the buggy address: [ 24.677206] fff00000c7876100: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 24.677327] fff00000c7876180: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 24.677453] >fff00000c7876200: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 24.677563] ^ [ 24.677666] fff00000c7876280: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 24.677801] fff00000c7876300: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 24.677911] ==================================================================
[ 12.782023] ================================================================== [ 12.783111] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0 [ 12.783415] Read of size 1 at addr ffff888102fab010 by task kunit_try_catch/276 [ 12.783743] [ 12.784117] CPU: 0 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250529 #1 PREEMPT(voluntary) [ 12.784171] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.784184] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.784205] Call Trace: [ 12.784218] <TASK> [ 12.784233] dump_stack_lvl+0x73/0xb0 [ 12.784260] print_report+0xd1/0x650 [ 12.784284] ? __virt_addr_valid+0x1db/0x2d0 [ 12.784307] ? strcmp+0xb0/0xc0 [ 12.784326] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.784348] ? strcmp+0xb0/0xc0 [ 12.784406] kasan_report+0x141/0x180 [ 12.784430] ? strcmp+0xb0/0xc0 [ 12.784453] __asan_report_load1_noabort+0x18/0x20 [ 12.784473] strcmp+0xb0/0xc0 [ 12.784494] kasan_strings+0x431/0xe80 [ 12.784514] ? trace_hardirqs_on+0x37/0xe0 [ 12.784566] ? __pfx_kasan_strings+0x10/0x10 [ 12.784587] ? finish_task_switch.isra.0+0x153/0x700 [ 12.784621] ? __switch_to+0x47/0xf50 [ 12.784647] ? __schedule+0x10cc/0x2b60 [ 12.784672] ? __pfx_read_tsc+0x10/0x10 [ 12.784694] ? ktime_get_ts64+0x86/0x230 [ 12.784719] kunit_try_run_case+0x1a5/0x480 [ 12.784741] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.784823] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.784849] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.784875] ? __kthread_parkme+0x82/0x180 [ 12.784896] ? preempt_count_sub+0x50/0x80 [ 12.784918] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.784939] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.784963] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.784988] kthread+0x337/0x6f0 [ 12.785008] ? trace_preempt_on+0x20/0xc0 [ 12.785030] ? __pfx_kthread+0x10/0x10 [ 12.785051] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.785074] ? calculate_sigpending+0x7b/0xa0 [ 12.785098] ? __pfx_kthread+0x10/0x10 [ 12.785120] ret_from_fork+0x116/0x1d0 [ 12.785138] ? __pfx_kthread+0x10/0x10 [ 12.785159] ret_from_fork_asm+0x1a/0x30 [ 12.785189] </TASK> [ 12.785200] [ 12.793948] Allocated by task 276: [ 12.794156] kasan_save_stack+0x45/0x70 [ 12.794384] kasan_save_track+0x18/0x40 [ 12.794583] kasan_save_alloc_info+0x3b/0x50 [ 12.794832] __kasan_kmalloc+0xb7/0xc0 [ 12.795117] __kmalloc_cache_noprof+0x189/0x420 [ 12.795371] kasan_strings+0xc0/0xe80 [ 12.795559] kunit_try_run_case+0x1a5/0x480 [ 12.795891] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.796169] kthread+0x337/0x6f0 [ 12.796374] ret_from_fork+0x116/0x1d0 [ 12.796580] ret_from_fork_asm+0x1a/0x30 [ 12.796849] [ 12.796943] Freed by task 276: [ 12.797067] kasan_save_stack+0x45/0x70 [ 12.797206] kasan_save_track+0x18/0x40 [ 12.797341] kasan_save_free_info+0x3f/0x60 [ 12.797550] __kasan_slab_free+0x56/0x70 [ 12.797754] kfree+0x222/0x3f0 [ 12.797960] kasan_strings+0x2aa/0xe80 [ 12.798098] kunit_try_run_case+0x1a5/0x480 [ 12.798242] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.798424] kthread+0x337/0x6f0 [ 12.798602] ret_from_fork+0x116/0x1d0 [ 12.798836] ret_from_fork_asm+0x1a/0x30 [ 12.799062] [ 12.799162] The buggy address belongs to the object at ffff888102fab000 [ 12.799162] which belongs to the cache kmalloc-32 of size 32 [ 12.800027] The buggy address is located 16 bytes inside of [ 12.800027] freed 32-byte region [ffff888102fab000, ffff888102fab020) [ 12.800526] [ 12.800602] The buggy address belongs to the physical page: [ 12.800906] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102fab [ 12.801706] flags: 0x200000000000000(node=0|zone=2) [ 12.802028] page_type: f5(slab) [ 12.802203] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 12.802477] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 12.802886] page dumped because: kasan: bad access detected [ 12.803290] [ 12.803389] Memory state around the buggy address: [ 12.803730] ffff888102faaf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.804040] ffff888102faaf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.804561] >ffff888102fab000: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 12.804979] ^ [ 12.805222] ffff888102fab080: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 12.805559] ffff888102fab100: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 12.805964] ==================================================================