Date
July 1, 2025, 11:08 a.m.
| Environment | |
|---|---|
| qemu-x86_64 |
[ 13.399233] ================================================================== [ 13.399752] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 13.400269] Read of size 1 at addr ffff888103aaf298 by task kunit_try_catch/274 [ 13.400569] [ 13.400685] CPU: 1 UID: 0 PID: 274 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 13.400734] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.400748] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.400770] Call Trace: [ 13.400783] <TASK> [ 13.400803] dump_stack_lvl+0x73/0xb0 [ 13.400835] print_report+0xd1/0x650 [ 13.401041] ? __virt_addr_valid+0x1db/0x2d0 [ 13.401239] ? memcmp+0x1b4/0x1d0 [ 13.401260] ? kasan_complete_mode_report_info+0x2a/0x200 [ 13.401283] ? memcmp+0x1b4/0x1d0 [ 13.401301] kasan_report+0x141/0x180 [ 13.401323] ? memcmp+0x1b4/0x1d0 [ 13.401344] __asan_report_load1_noabort+0x18/0x20 [ 13.401368] memcmp+0x1b4/0x1d0 [ 13.401402] kasan_memcmp+0x18f/0x390 [ 13.401422] ? trace_hardirqs_on+0x37/0xe0 [ 13.401447] ? __pfx_kasan_memcmp+0x10/0x10 [ 13.401467] ? finish_task_switch.isra.0+0x153/0x700 [ 13.401492] ? __switch_to+0x47/0xf50 [ 13.401521] ? __pfx_read_tsc+0x10/0x10 [ 13.401543] ? ktime_get_ts64+0x86/0x230 [ 13.401567] kunit_try_run_case+0x1a5/0x480 [ 13.401592] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.401614] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.401639] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.401661] ? __kthread_parkme+0x82/0x180 [ 13.401683] ? preempt_count_sub+0x50/0x80 [ 13.401705] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.401728] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.401750] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.401773] kthread+0x337/0x6f0 [ 13.401791] ? trace_preempt_on+0x20/0xc0 [ 13.401812] ? __pfx_kthread+0x10/0x10 [ 13.401832] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.401852] ? calculate_sigpending+0x7b/0xa0 [ 13.401875] ? __pfx_kthread+0x10/0x10 [ 13.401895] ret_from_fork+0x116/0x1d0 [ 13.401913] ? __pfx_kthread+0x10/0x10 [ 13.401974] ret_from_fork_asm+0x1a/0x30 [ 13.402006] </TASK> [ 13.402017] [ 13.410108] Allocated by task 274: [ 13.410302] kasan_save_stack+0x45/0x70 [ 13.410520] kasan_save_track+0x18/0x40 [ 13.410704] kasan_save_alloc_info+0x3b/0x50 [ 13.410960] __kasan_kmalloc+0xb7/0xc0 [ 13.411126] __kmalloc_cache_noprof+0x189/0x420 [ 13.411328] kasan_memcmp+0xb7/0x390 [ 13.411521] kunit_try_run_case+0x1a5/0x480 [ 13.411768] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.411941] kthread+0x337/0x6f0 [ 13.412061] ret_from_fork+0x116/0x1d0 [ 13.412192] ret_from_fork_asm+0x1a/0x30 [ 13.412398] [ 13.412493] The buggy address belongs to the object at ffff888103aaf280 [ 13.412493] which belongs to the cache kmalloc-32 of size 32 [ 13.413279] The buggy address is located 0 bytes to the right of [ 13.413279] allocated 24-byte region [ffff888103aaf280, ffff888103aaf298) [ 13.414137] [ 13.414217] The buggy address belongs to the physical page: [ 13.414437] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103aaf [ 13.414685] flags: 0x200000000000000(node=0|zone=2) [ 13.414854] page_type: f5(slab) [ 13.415006] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 13.415349] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 13.415692] page dumped because: kasan: bad access detected [ 13.416025] [ 13.416389] Memory state around the buggy address: [ 13.416593] ffff888103aaf180: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 13.416905] ffff888103aaf200: 00 00 00 04 fc fc fc fc 00 00 07 fc fc fc fc fc [ 13.417158] >ffff888103aaf280: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.417369] ^ [ 13.417528] ffff888103aaf300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.418130] ffff888103aaf380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.418747] ==================================================================