[   13.102569] ==================================================================
[   13.102946] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   13.103230] Read of size 1 at addr ffff88810262ad90 by task kunit_try_catch/285
[   13.103531] 
[   13.103786] CPU: 0 UID: 0 PID: 285 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc2-next-20250618 #1 PREEMPT(voluntary) 
[   13.103836] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.103848] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.103870] Call Trace:
[   13.103886]  <TASK>
[   13.103901]  dump_stack_lvl+0x73/0xb0
[   13.103929]  print_report+0xd1/0x650
[   13.103951]  ? __virt_addr_valid+0x1db/0x2d0
[   13.103973]  ? kasan_strings+0xcbc/0xe80
[   13.103992]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.104017]  ? kasan_strings+0xcbc/0xe80
[   13.104037]  kasan_report+0x141/0x180
[   13.104058]  ? kasan_strings+0xcbc/0xe80
[   13.104082]  __asan_report_load1_noabort+0x18/0x20
[   13.104106]  kasan_strings+0xcbc/0xe80
[   13.104124]  ? trace_hardirqs_on+0x37/0xe0
[   13.104147]  ? __pfx_kasan_strings+0x10/0x10
[   13.104167]  ? finish_task_switch.isra.0+0x153/0x700
[   13.104188]  ? __switch_to+0x47/0xf50
[   13.104224]  ? __schedule+0x10cc/0x2b60
[   13.104245]  ? __pfx_read_tsc+0x10/0x10
[   13.104264]  ? ktime_get_ts64+0x86/0x230
[   13.104289]  kunit_try_run_case+0x1a5/0x480
[   13.104311]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.104334]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.104355]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.104378]  ? __kthread_parkme+0x82/0x180
[   13.104397]  ? preempt_count_sub+0x50/0x80
[   13.104420]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.104443]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.104464]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.104486]  kthread+0x337/0x6f0
[   13.104505]  ? trace_preempt_on+0x20/0xc0
[   13.104527]  ? __pfx_kthread+0x10/0x10
[   13.104547]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.104566]  ? calculate_sigpending+0x7b/0xa0
[   13.104589]  ? __pfx_kthread+0x10/0x10
[   13.104611]  ret_from_fork+0x116/0x1d0
[   13.104629]  ? __pfx_kthread+0x10/0x10
[   13.104654]  ret_from_fork_asm+0x1a/0x30
[   13.104683]  </TASK>
[   13.104692] 
[   13.114141] Allocated by task 285:
[   13.114466]  kasan_save_stack+0x45/0x70
[   13.114695]  kasan_save_track+0x18/0x40
[   13.114994]  kasan_save_alloc_info+0x3b/0x50
[   13.115266]  __kasan_kmalloc+0xb7/0xc0
[   13.115566]  __kmalloc_cache_noprof+0x189/0x420
[   13.115810]  kasan_strings+0xc0/0xe80
[   13.116096]  kunit_try_run_case+0x1a5/0x480
[   13.116443]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.116687]  kthread+0x337/0x6f0
[   13.117023]  ret_from_fork+0x116/0x1d0
[   13.117193]  ret_from_fork_asm+0x1a/0x30
[   13.117527] 
[   13.117616] Freed by task 285:
[   13.117750]  kasan_save_stack+0x45/0x70
[   13.118005]  kasan_save_track+0x18/0x40
[   13.118448]  kasan_save_free_info+0x3f/0x60
[   13.118637]  __kasan_slab_free+0x56/0x70
[   13.118875]  kfree+0x222/0x3f0
[   13.119151]  kasan_strings+0x2aa/0xe80
[   13.119422]  kunit_try_run_case+0x1a5/0x480
[   13.119633]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.120008]  kthread+0x337/0x6f0
[   13.120449]  ret_from_fork+0x116/0x1d0
[   13.120595]  ret_from_fork_asm+0x1a/0x30
[   13.120788] 
[   13.120862] The buggy address belongs to the object at ffff88810262ad80
[   13.120862]  which belongs to the cache kmalloc-32 of size 32
[   13.121652] The buggy address is located 16 bytes inside of
[   13.121652]  freed 32-byte region [ffff88810262ad80, ffff88810262ada0)
[   13.122176] 
[   13.122275] The buggy address belongs to the physical page:
[   13.122670] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10262a
[   13.123057] flags: 0x200000000000000(node=0|zone=2)
[   13.123328] page_type: f5(slab)
[   13.123446] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.123917] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.124305] page dumped because: kasan: bad access detected
[   13.124537] 
[   13.124682] Memory state around the buggy address:
[   13.124910]  ffff88810262ac80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   13.125337]  ffff88810262ad00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.125623] >ffff88810262ad80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.125904]                          ^
[   13.126058]  ffff88810262ae00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.126373]  ffff88810262ae80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.126645] ==================================================================