Date
July 20, 2025, 11:12 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.570195] ================================================================== [ 17.570276] BUG: KASAN: slab-out-of-bounds in memcmp+0x198/0x1d8 [ 17.570347] Read of size 1 at addr fff00000c78bb458 by task kunit_try_catch/257 [ 17.570402] [ 17.570446] CPU: 0 UID: 0 PID: 257 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.570531] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.570561] Hardware name: linux,dummy-virt (DT) [ 17.570597] Call trace: [ 17.570624] show_stack+0x20/0x38 (C) [ 17.570689] dump_stack_lvl+0x8c/0xd0 [ 17.570739] print_report+0x118/0x5d0 [ 17.570791] kasan_report+0xdc/0x128 [ 17.570839] __asan_report_load1_noabort+0x20/0x30 [ 17.570893] memcmp+0x198/0x1d8 [ 17.570935] kasan_memcmp+0x16c/0x300 [ 17.570981] kunit_try_run_case+0x170/0x3f0 [ 17.572106] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.572177] kthread+0x328/0x630 [ 17.572400] ret_from_fork+0x10/0x20 [ 17.572459] [ 17.572483] Allocated by task 257: [ 17.572514] kasan_save_stack+0x3c/0x68 [ 17.572935] kasan_save_track+0x20/0x40 [ 17.573191] kasan_save_alloc_info+0x40/0x58 [ 17.573244] __kasan_kmalloc+0xd4/0xd8 [ 17.573583] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.573953] kasan_memcmp+0xbc/0x300 [ 17.574019] kunit_try_run_case+0x170/0x3f0 [ 17.574393] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.574444] kthread+0x328/0x630 [ 17.574937] ret_from_fork+0x10/0x20 [ 17.575395] [ 17.575639] The buggy address belongs to the object at fff00000c78bb440 [ 17.575639] which belongs to the cache kmalloc-32 of size 32 [ 17.575905] The buggy address is located 0 bytes to the right of [ 17.575905] allocated 24-byte region [fff00000c78bb440, fff00000c78bb458) [ 17.576187] [ 17.576269] The buggy address belongs to the physical page: [ 17.576501] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078bb [ 17.576970] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.577035] page_type: f5(slab) [ 17.577372] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 17.577431] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 17.577476] page dumped because: kasan: bad access detected [ 17.577918] [ 17.578218] Memory state around the buggy address: [ 17.578309] fff00000c78bb300: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 17.578358] fff00000c78bb380: 00 00 00 04 fc fc fc fc 00 00 07 fc fc fc fc fc [ 17.578533] >fff00000c78bb400: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 17.578765] ^ [ 17.578827] fff00000c78bb480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.578874] fff00000c78bb500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.579080] ==================================================================
[ 14.180709] ================================================================== [ 14.181218] BUG: KASAN: slab-out-of-bounds in memcmp+0x1b4/0x1d0 [ 14.181464] Read of size 1 at addr ffff888102746a58 by task kunit_try_catch/274 [ 14.181915] [ 14.182019] CPU: 1 UID: 0 PID: 274 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 14.182063] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.182076] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.182096] Call Trace: [ 14.182108] <TASK> [ 14.182124] dump_stack_lvl+0x73/0xb0 [ 14.182164] print_report+0xd1/0x610 [ 14.182187] ? __virt_addr_valid+0x1db/0x2d0 [ 14.182222] ? memcmp+0x1b4/0x1d0 [ 14.182239] ? kasan_complete_mode_report_info+0x2a/0x200 [ 14.182260] ? memcmp+0x1b4/0x1d0 [ 14.182277] kasan_report+0x141/0x180 [ 14.182299] ? memcmp+0x1b4/0x1d0 [ 14.182321] __asan_report_load1_noabort+0x18/0x20 [ 14.182357] memcmp+0x1b4/0x1d0 [ 14.182376] kasan_memcmp+0x18f/0x390 [ 14.182397] ? finish_task_switch.isra.0+0x156/0x700 [ 14.182421] ? __pfx_kasan_memcmp+0x10/0x10 [ 14.182441] ? finish_task_switch.isra.0+0x153/0x700 [ 14.182461] ? __switch_to+0x47/0xf50 [ 14.182489] ? __pfx_read_tsc+0x10/0x10 [ 14.182509] ? ktime_get_ts64+0x86/0x230 [ 14.182533] kunit_try_run_case+0x1a5/0x480 [ 14.182557] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.182579] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.182602] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.182634] ? __kthread_parkme+0x82/0x180 [ 14.182653] ? preempt_count_sub+0x50/0x80 [ 14.182675] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.182719] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.182742] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.182773] kthread+0x337/0x6f0 [ 14.182792] ? trace_preempt_on+0x20/0xc0 [ 14.182815] ? __pfx_kthread+0x10/0x10 [ 14.182845] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.182865] ? calculate_sigpending+0x7b/0xa0 [ 14.182888] ? __pfx_kthread+0x10/0x10 [ 14.182917] ret_from_fork+0x116/0x1d0 [ 14.182936] ? __pfx_kthread+0x10/0x10 [ 14.182956] ret_from_fork_asm+0x1a/0x30 [ 14.182985] </TASK> [ 14.182995] [ 14.194177] Allocated by task 274: [ 14.194363] kasan_save_stack+0x45/0x70 [ 14.194694] kasan_save_track+0x18/0x40 [ 14.194869] kasan_save_alloc_info+0x3b/0x50 [ 14.195095] __kasan_kmalloc+0xb7/0xc0 [ 14.195286] __kmalloc_cache_noprof+0x189/0x420 [ 14.195444] kasan_memcmp+0xb7/0x390 [ 14.195690] kunit_try_run_case+0x1a5/0x480 [ 14.195902] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.196090] kthread+0x337/0x6f0 [ 14.196511] ret_from_fork+0x116/0x1d0 [ 14.196845] ret_from_fork_asm+0x1a/0x30 [ 14.197081] [ 14.197178] The buggy address belongs to the object at ffff888102746a40 [ 14.197178] which belongs to the cache kmalloc-32 of size 32 [ 14.197655] The buggy address is located 0 bytes to the right of [ 14.197655] allocated 24-byte region [ffff888102746a40, ffff888102746a58) [ 14.198383] [ 14.198533] The buggy address belongs to the physical page: [ 14.198787] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102746 [ 14.199142] flags: 0x200000000000000(node=0|zone=2) [ 14.199378] page_type: f5(slab) [ 14.199636] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.199938] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.200204] page dumped because: kasan: bad access detected [ 14.200475] [ 14.200570] Memory state around the buggy address: [ 14.200809] ffff888102746900: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.201032] ffff888102746980: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 14.201349] >ffff888102746a00: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.201972] ^ [ 14.202220] ffff888102746a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.202670] ffff888102746b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.203000] ==================================================================