[   13.136152] ==================================================================
[   13.136536] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   13.136954] Read of size 1 at addr ffff88810314dfd0 by task kunit_try_catch/278
[   13.137327] 
[   13.137473] CPU: 0 UID: 0 PID: 278 Comm: kunit_try_catch Tainted: G    B            N  6.15.5-rc1 #1 PREEMPT(voluntary) 
[   13.137525] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.137537] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.137567] Call Trace:
[   13.137586]  <TASK>
[   13.137605]  dump_stack_lvl+0x73/0xb0
[   13.137666]  print_report+0xd1/0x650
[   13.137692]  ? __virt_addr_valid+0x1db/0x2d0
[   13.137715]  ? kasan_strings+0xcbc/0xe80
[   13.137736]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.137759]  ? kasan_strings+0xcbc/0xe80
[   13.137782]  kasan_report+0x141/0x180
[   13.137835]  ? kasan_strings+0xcbc/0xe80
[   13.137863]  __asan_report_load1_noabort+0x18/0x20
[   13.137885]  kasan_strings+0xcbc/0xe80
[   13.137905]  ? trace_hardirqs_on+0x37/0xe0
[   13.137928]  ? __pfx_kasan_strings+0x10/0x10
[   13.137950]  ? finish_task_switch.isra.0+0x153/0x700
[   13.137973]  ? __switch_to+0x5d9/0xf60
[   13.138026]  ? dequeue_task_fair+0x166/0x4e0
[   13.138051]  ? __schedule+0x10cc/0x2b60
[   13.138075]  ? __pfx_read_tsc+0x10/0x10
[   13.138095]  ? ktime_get_ts64+0x86/0x230
[   13.138121]  kunit_try_run_case+0x1a5/0x480
[   13.138145]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.138169]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.138194]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.138218]  ? __kthread_parkme+0x82/0x180
[   13.138280]  ? preempt_count_sub+0x50/0x80
[   13.138327]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.138375]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.138398]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.138422]  kthread+0x337/0x6f0
[   13.138439]  ? trace_preempt_on+0x20/0xc0
[   13.138461]  ? __pfx_kthread+0x10/0x10
[   13.138480]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.138501]  ? calculate_sigpending+0x7b/0xa0
[   13.138524]  ? __pfx_kthread+0x10/0x10
[   13.138542]  ret_from_fork+0x41/0x80
[   13.138566]  ? __pfx_kthread+0x10/0x10
[   13.138584]  ret_from_fork_asm+0x1a/0x30
[   13.138614]  </TASK>
[   13.138625] 
[   13.149047] Allocated by task 278:
[   13.149365]  kasan_save_stack+0x45/0x70
[   13.149578]  kasan_save_track+0x18/0x40
[   13.149860]  kasan_save_alloc_info+0x3b/0x50
[   13.150050]  __kasan_kmalloc+0xb7/0xc0
[   13.150220]  __kmalloc_cache_noprof+0x189/0x420
[   13.150824]  kasan_strings+0xc0/0xe80
[   13.151263]  kunit_try_run_case+0x1a5/0x480
[   13.151543]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.152054]  kthread+0x337/0x6f0
[   13.152372]  ret_from_fork+0x41/0x80
[   13.152544]  ret_from_fork_asm+0x1a/0x30
[   13.152995] 
[   13.153089] Freed by task 278:
[   13.153392]  kasan_save_stack+0x45/0x70
[   13.153907]  kasan_save_track+0x18/0x40
[   13.154106]  kasan_save_free_info+0x3f/0x60
[   13.154311]  __kasan_slab_free+0x56/0x70
[   13.154495]  kfree+0x222/0x3f0
[   13.154647]  kasan_strings+0x2aa/0xe80
[   13.154830]  kunit_try_run_case+0x1a5/0x480
[   13.155022]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.155259]  kthread+0x337/0x6f0
[   13.155413]  ret_from_fork+0x41/0x80
[   13.155583]  ret_from_fork_asm+0x1a/0x30
[   13.156155] 
[   13.156407] The buggy address belongs to the object at ffff88810314dfc0
[   13.156407]  which belongs to the cache kmalloc-32 of size 32
[   13.157364] The buggy address is located 16 bytes inside of
[   13.157364]  freed 32-byte region [ffff88810314dfc0, ffff88810314dfe0)
[   13.158714] 
[   13.158941] The buggy address belongs to the physical page:
[   13.159191] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10314d
[   13.159531] flags: 0x200000000000000(node=0|zone=2)
[   13.160001] page_type: f5(slab)
[   13.160451] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.161028] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000
[   13.161364] page dumped because: kasan: bad access detected
[   13.161616] 
[   13.161933] Memory state around the buggy address:
[   13.162290]  ffff88810314de80: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc
[   13.163092]  ffff88810314df00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.163405] >ffff88810314df80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.163758]                                                  ^
[   13.164003]  ffff88810314e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   13.164306]  ffff88810314e080: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb
[   13.164597] ==================================================================