Date
July 15, 2025, 2:09 p.m.
| Environment | |
|---|---|
| qemu-x86_64 |
[ 11.135101] ================================================================== [ 11.135542] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_memset_8+0x166/0x330 [ 11.135851] Write of size 8 at addr ffff888102f2ad71 by task kunit_try_catch/195 [ 11.136298] [ 11.136628] CPU: 1 UID: 0 PID: 195 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT(voluntary) [ 11.136677] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.136688] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.136707] Call Trace: [ 11.136718] <TASK> [ 11.136732] dump_stack_lvl+0x73/0xb0 [ 11.136756] print_report+0xd1/0x610 [ 11.136778] ? __virt_addr_valid+0x1db/0x2d0 [ 11.136798] ? kmalloc_oob_memset_8+0x166/0x330 [ 11.136819] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.136840] ? kmalloc_oob_memset_8+0x166/0x330 [ 11.136862] kasan_report+0x141/0x180 [ 11.136897] ? kmalloc_oob_memset_8+0x166/0x330 [ 11.136924] kasan_check_range+0x10c/0x1c0 [ 11.136942] __asan_memset+0x27/0x50 [ 11.136962] kmalloc_oob_memset_8+0x166/0x330 [ 11.136984] ? __pfx_kmalloc_oob_memset_8+0x10/0x10 [ 11.137006] ? __schedule+0x10cc/0x2b60 [ 11.137029] ? __pfx_read_tsc+0x10/0x10 [ 11.137048] ? ktime_get_ts64+0x86/0x230 [ 11.137071] kunit_try_run_case+0x1a5/0x480 [ 11.137091] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.137108] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.137136] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.137158] ? __kthread_parkme+0x82/0x180 [ 11.137180] ? preempt_count_sub+0x50/0x80 [ 11.137204] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.137224] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.137246] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.137268] kthread+0x337/0x6f0 [ 11.137283] ? trace_preempt_on+0x20/0xc0 [ 11.137306] ? __pfx_kthread+0x10/0x10 [ 11.137323] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.137343] ? calculate_sigpending+0x7b/0xa0 [ 11.137364] ? __pfx_kthread+0x10/0x10 [ 11.137381] ret_from_fork+0x41/0x80 [ 11.137401] ? __pfx_kthread+0x10/0x10 [ 11.137418] ret_from_fork_asm+0x1a/0x30 [ 11.137448] </TASK> [ 11.137458] [ 11.147185] Allocated by task 195: [ 11.147494] kasan_save_stack+0x45/0x70 [ 11.147929] kasan_save_track+0x18/0x40 [ 11.148115] kasan_save_alloc_info+0x3b/0x50 [ 11.148309] __kasan_kmalloc+0xb7/0xc0 [ 11.148482] __kmalloc_cache_noprof+0x189/0x420 [ 11.148680] kmalloc_oob_memset_8+0xac/0x330 [ 11.149103] kunit_try_run_case+0x1a5/0x480 [ 11.149553] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.150028] kthread+0x337/0x6f0 [ 11.150509] ret_from_fork+0x41/0x80 [ 11.150790] ret_from_fork_asm+0x1a/0x30 [ 11.150989] [ 11.151082] The buggy address belongs to the object at ffff888102f2ad00 [ 11.151082] which belongs to the cache kmalloc-128 of size 128 [ 11.151574] The buggy address is located 113 bytes inside of [ 11.151574] allocated 120-byte region [ffff888102f2ad00, ffff888102f2ad78) [ 11.152390] [ 11.152572] The buggy address belongs to the physical page: [ 11.153045] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102f2a [ 11.153682] flags: 0x200000000000000(node=0|zone=2) [ 11.154170] page_type: f5(slab) [ 11.154329] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 11.154642] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000 [ 11.155347] page dumped because: kasan: bad access detected [ 11.155759] [ 11.156081] Memory state around the buggy address: [ 11.156284] ffff888102f2ac00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.156578] ffff888102f2ac80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.157414] >ffff888102f2ad00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 11.158107] ^ [ 11.158406] ffff888102f2ad80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.158857] ffff888102f2ae00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.159349] ==================================================================