Date
July 22, 2025, 2:40 p.m.
| Environment | |
|---|---|
| qemu-x86_64 |
[ 11.313982] ================================================================== [ 11.315450] BUG: KASAN: slab-out-of-bounds in kmalloc_memmove_invalid_size+0x16f/0x330 [ 11.315777] Read of size 64 at addr ffff8881028bc104 by task kunit_try_catch/202 [ 11.316522] [ 11.316754] CPU: 1 UID: 0 PID: 202 Comm: kunit_try_catch Tainted: G B N 6.15.8-rc1 #1 PREEMPT(voluntary) [ 11.316803] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.316814] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.316835] Call Trace: [ 11.316847] <TASK> [ 11.316863] dump_stack_lvl+0x73/0xb0 [ 11.316890] print_report+0xd1/0x610 [ 11.316920] ? __virt_addr_valid+0x1db/0x2d0 [ 11.316967] ? kmalloc_memmove_invalid_size+0x16f/0x330 [ 11.316988] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.317009] ? kmalloc_memmove_invalid_size+0x16f/0x330 [ 11.317029] kasan_report+0x141/0x180 [ 11.317062] ? kmalloc_memmove_invalid_size+0x16f/0x330 [ 11.317088] kasan_check_range+0x10c/0x1c0 [ 11.317107] __asan_memmove+0x27/0x70 [ 11.317128] kmalloc_memmove_invalid_size+0x16f/0x330 [ 11.317148] ? __pfx_kmalloc_memmove_invalid_size+0x10/0x10 [ 11.317169] ? __schedule+0x10c6/0x2b60 [ 11.317193] ? __pfx_read_tsc+0x10/0x10 [ 11.317212] ? ktime_get_ts64+0x86/0x230 [ 11.317248] kunit_try_run_case+0x1a5/0x480 [ 11.317269] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.317286] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.317306] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.317329] ? __kthread_parkme+0x82/0x180 [ 11.317350] ? preempt_count_sub+0x50/0x80 [ 11.317375] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.317394] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.317416] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.317438] kthread+0x337/0x6f0 [ 11.317454] ? trace_preempt_on+0x20/0xc0 [ 11.317477] ? __pfx_kthread+0x10/0x10 [ 11.317494] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.317516] ? calculate_sigpending+0x7b/0xa0 [ 11.317536] ? __pfx_kthread+0x10/0x10 [ 11.317554] ret_from_fork+0x41/0x80 [ 11.317573] ? __pfx_kthread+0x10/0x10 [ 11.317590] ret_from_fork_asm+0x1a/0x30 [ 11.317620] </TASK> [ 11.317631] [ 11.327539] Allocated by task 202: [ 11.328022] kasan_save_stack+0x45/0x70 [ 11.328749] kasan_save_track+0x18/0x40 [ 11.329294] kasan_save_alloc_info+0x3b/0x50 [ 11.329950] __kasan_kmalloc+0xb7/0xc0 [ 11.330096] __kmalloc_cache_noprof+0x189/0x420 [ 11.330268] kmalloc_memmove_invalid_size+0xac/0x330 [ 11.330693] kunit_try_run_case+0x1a5/0x480 [ 11.331171] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.331607] kthread+0x337/0x6f0 [ 11.331987] ret_from_fork+0x41/0x80 [ 11.332292] ret_from_fork_asm+0x1a/0x30 [ 11.332508] [ 11.332604] The buggy address belongs to the object at ffff8881028bc100 [ 11.332604] which belongs to the cache kmalloc-64 of size 64 [ 11.333163] The buggy address is located 4 bytes inside of [ 11.333163] allocated 64-byte region [ffff8881028bc100, ffff8881028bc140) [ 11.333902] [ 11.334007] The buggy address belongs to the physical page: [ 11.334259] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1028bc [ 11.334971] flags: 0x200000000000000(node=0|zone=2) [ 11.335287] page_type: f5(slab) [ 11.335602] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.335972] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.336429] page dumped because: kasan: bad access detected [ 11.337010] [ 11.337129] Memory state around the buggy address: [ 11.337521] ffff8881028bc000: 00 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc [ 11.338009] ffff8881028bc080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.338334] >ffff8881028bc100: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 11.338635] ^ [ 11.339262] ffff8881028bc180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.339758] ffff8881028bc200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.340119] ==================================================================