Date
July 19, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-x86_64 |
[ 13.868709] ================================================================== [ 13.869274] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 13.869621] Read of size 1 at addr ffff8881039ba0d8 by task kunit_try_catch/274 [ 13.870066] [ 13.870168] CPU: 1 UID: 0 PID: 274 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.870212] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.870223] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.870244] Call Trace: [ 13.870255] <TASK> [ 13.870293] dump_stack_lvl+0x73/0xb0 [ 13.870323] print_report+0xd1/0x610 [ 13.870346] ? __virt_addr_valid+0x1db/0x2d0 [ 13.870367] ? memcmp+0x1b4/0x1d0 [ 13.870385] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.870407] ? memcmp+0x1b4/0x1d0 [ 13.870425] kasan_report+0x141/0x180 [ 13.870446] ? memcmp+0x1b4/0x1d0 [ 13.870548] __asan_report_load1_noabort+0x18/0x20 [ 13.870577] memcmp+0x1b4/0x1d0 [ 13.870597] kasan_memcmp+0x18f/0x390 [ 13.870629] ? trace_hardirqs_on+0x37/0xe0 [ 13.870653] ? __pfx_kasan_memcmp+0x10/0x10 [ 13.870672] ? finish_task_switch.isra.0+0x153/0x700 [ 13.870693] ? __switch_to+0x47/0xf50 [ 13.870722] ? __pfx_read_tsc+0x10/0x10 [ 13.870742] ? ktime_get_ts64+0x86/0x230 [ 13.870765] kunit_try_run_case+0x1a5/0x480 [ 13.870790] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.870812] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.870835] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.870876] ? __kthread_parkme+0x82/0x180 [ 13.870897] ? preempt_count_sub+0x50/0x80 [ 13.870919] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.870942] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.870966] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.870989] kthread+0x337/0x6f0 [ 13.871020] ? trace_preempt_on+0x20/0xc0 [ 13.871041] ? __pfx_kthread+0x10/0x10 [ 13.871061] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.871081] ? calculate_sigpending+0x7b/0xa0 [ 13.871105] ? __pfx_kthread+0x10/0x10 [ 13.871125] ret_from_fork+0x116/0x1d0 [ 13.871143] ? __pfx_kthread+0x10/0x10 [ 13.871163] ret_from_fork_asm+0x1a/0x30 [ 13.871193] </TASK> [ 13.871204] [ 13.878716] Allocated by task 274: [ 13.878892] kasan_save_stack+0x45/0x70 [ 13.879106] kasan_save_track+0x18/0x40 [ 13.879305] kasan_save_alloc_info+0x3b/0x50 [ 13.879534] __kasan_kmalloc+0xb7/0xc0 [ 13.879723] __kmalloc_cache_noprof+0x189/0x420 [ 13.879918] kasan_memcmp+0xb7/0x390 [ 13.880109] kunit_try_run_case+0x1a5/0x480 [ 13.880299] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.880621] kthread+0x337/0x6f0 [ 13.880778] ret_from_fork+0x116/0x1d0 [ 13.880932] ret_from_fork_asm+0x1a/0x30 [ 13.881130] [ 13.881203] The buggy address belongs to the object at ffff8881039ba0c0 [ 13.881203] which belongs to the cache kmalloc-32 of size 32 [ 13.881637] The buggy address is located 0 bytes to the right of [ 13.881637] allocated 24-byte region [ffff8881039ba0c0, ffff8881039ba0d8) [ 13.882309] [ 13.882384] The buggy address belongs to the physical page: [ 13.882636] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039ba [ 13.882944] flags: 0x200000000000000(node=0|zone=2) [ 13.883120] page_type: f5(slab) [ 13.883241] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 13.883473] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 13.883697] page dumped because: kasan: bad access detected [ 13.883895] [ 13.883989] Memory state around the buggy address: [ 13.884543] ffff8881039b9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.884864] ffff8881039ba000: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 13.885200] >ffff8881039ba080: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 13.885506] ^ [ 13.885791] ffff8881039ba100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.886002] ffff8881039ba180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.886221] ==================================================================