[   15.820728] ==================================================================
[   15.821705] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   15.822716] Read of size 1 at addr ffff8881038e5fd0 by task kunit_try_catch/277
[   15.823300] 
[   15.823416] CPU: 0 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   15.823473] Tainted: [B]=BAD_PAGE, [N]=TEST
[   15.823489] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   15.823516] Call Trace:
[   15.823540]  <TASK>
[   15.823565]  dump_stack_lvl+0x73/0xb0
[   15.823601]  print_report+0xd1/0x650
[   15.823628]  ? __virt_addr_valid+0x1db/0x2d0
[   15.823674]  ? kasan_strings+0xcbc/0xe80
[   15.823698]  ? kasan_complete_mode_report_info+0x64/0x200
[   15.823725]  ? kasan_strings+0xcbc/0xe80
[   15.823751]  kasan_report+0x141/0x180
[   15.823934]  ? kasan_strings+0xcbc/0xe80
[   15.823965]  __asan_report_load1_noabort+0x18/0x20
[   15.823995]  kasan_strings+0xcbc/0xe80
[   15.824018]  ? trace_hardirqs_on+0x37/0xe0
[   15.824077]  ? __pfx_kasan_strings+0x10/0x10
[   15.824102]  ? finish_task_switch.isra.0+0x153/0x700
[   15.824129]  ? __switch_to+0x47/0xf50
[   15.824160]  ? __schedule+0x10cc/0x2b60
[   15.824187]  ? __pfx_read_tsc+0x10/0x10
[   15.824213]  ? ktime_get_ts64+0x86/0x230
[   15.824242]  kunit_try_run_case+0x1a5/0x480
[   15.824271]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.824300]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   15.824329]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   15.824357]  ? __kthread_parkme+0x82/0x180
[   15.824382]  ? preempt_count_sub+0x50/0x80
[   15.824409]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.824437]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.824465]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   15.824493]  kthread+0x337/0x6f0
[   15.824515]  ? trace_preempt_on+0x20/0xc0
[   15.824541]  ? __pfx_kthread+0x10/0x10
[   15.824566]  ? _raw_spin_unlock_irq+0x47/0x80
[   15.824591]  ? calculate_sigpending+0x7b/0xa0
[   15.824620]  ? __pfx_kthread+0x10/0x10
[   15.824660]  ret_from_fork+0x116/0x1d0
[   15.824682]  ? __pfx_kthread+0x10/0x10
[   15.824705]  ret_from_fork_asm+0x1a/0x30
[   15.824744]  </TASK>
[   15.824780] 
[   15.834671] Allocated by task 277:
[   15.834891]  kasan_save_stack+0x45/0x70
[   15.835079]  kasan_save_track+0x18/0x40
[   15.835243]  kasan_save_alloc_info+0x3b/0x50
[   15.835611]  __kasan_kmalloc+0xb7/0xc0
[   15.836001]  __kmalloc_cache_noprof+0x189/0x420
[   15.836281]  kasan_strings+0xc0/0xe80
[   15.836526]  kunit_try_run_case+0x1a5/0x480
[   15.836740]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.837149]  kthread+0x337/0x6f0
[   15.837334]  ret_from_fork+0x116/0x1d0
[   15.837508]  ret_from_fork_asm+0x1a/0x30
[   15.837690] 
[   15.838015] Freed by task 277:
[   15.838220]  kasan_save_stack+0x45/0x70
[   15.838464]  kasan_save_track+0x18/0x40
[   15.838737]  kasan_save_free_info+0x3f/0x60
[   15.839085]  __kasan_slab_free+0x56/0x70
[   15.839336]  kfree+0x222/0x3f0
[   15.839494]  kasan_strings+0x2aa/0xe80
[   15.839671]  kunit_try_run_case+0x1a5/0x480
[   15.839918]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.840372]  kthread+0x337/0x6f0
[   15.840598]  ret_from_fork+0x116/0x1d0
[   15.840775]  ret_from_fork_asm+0x1a/0x30
[   15.840952] 
[   15.841060] The buggy address belongs to the object at ffff8881038e5fc0
[   15.841060]  which belongs to the cache kmalloc-32 of size 32
[   15.842073] The buggy address is located 16 bytes inside of
[   15.842073]  freed 32-byte region [ffff8881038e5fc0, ffff8881038e5fe0)
[   15.842658] 
[   15.842752] The buggy address belongs to the physical page:
[   15.843200] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1038e5
[   15.843535] flags: 0x200000000000000(node=0|zone=2)
[   15.843979] page_type: f5(slab)
[   15.844191] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   15.844604] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000
[   15.845135] page dumped because: kasan: bad access detected
[   15.845441] 
[   15.845556] Memory state around the buggy address:
[   15.846055]  ffff8881038e5e80: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc
[   15.846427]  ffff8881038e5f00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   15.846731] >ffff8881038e5f80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   15.847233]                                                  ^
[   15.847504]  ffff8881038e6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   15.848020]  ffff8881038e6080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.848399] ==================================================================