[   14.242624] ==================================================================
[   14.243603] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0
[   14.243896] Read of size 1 at addr ffff8881026c3d90 by task kunit_try_catch/276
[   14.244345] 
[   14.244467] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   14.244515] Tainted: [B]=BAD_PAGE, [N]=TEST
[   14.244528] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   14.244549] Call Trace:
[   14.244561]  <TASK>
[   14.244580]  dump_stack_lvl+0x73/0xb0
[   14.244609]  print_report+0xd1/0x610
[   14.244632]  ? __virt_addr_valid+0x1db/0x2d0
[   14.244654]  ? strcmp+0xb0/0xc0
[   14.244671]  ? kasan_complete_mode_report_info+0x64/0x200
[   14.244692]  ? strcmp+0xb0/0xc0
[   14.244710]  kasan_report+0x141/0x180
[   14.244731]  ? strcmp+0xb0/0xc0
[   14.244754]  __asan_report_load1_noabort+0x18/0x20
[   14.244779]  strcmp+0xb0/0xc0
[   14.244797]  kasan_strings+0x431/0xe80
[   14.244815]  ? trace_hardirqs_on+0x37/0xe0
[   14.244839]  ? __pfx_kasan_strings+0x10/0x10
[   14.244908]  ? finish_task_switch.isra.0+0x153/0x700
[   14.244931]  ? __switch_to+0x47/0xf50
[   14.244959]  ? __schedule+0x10cc/0x2b60
[   14.244983]  ? __pfx_read_tsc+0x10/0x10
[   14.245003]  ? ktime_get_ts64+0x86/0x230
[   14.245028]  kunit_try_run_case+0x1a5/0x480
[   14.245067]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.245088]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   14.245112]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   14.245135]  ? __kthread_parkme+0x82/0x180
[   14.245156]  ? preempt_count_sub+0x50/0x80
[   14.245178]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.245202]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.245225]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   14.245249]  kthread+0x337/0x6f0
[   14.245267]  ? trace_preempt_on+0x20/0xc0
[   14.245290]  ? __pfx_kthread+0x10/0x10
[   14.245310]  ? _raw_spin_unlock_irq+0x47/0x80
[   14.245331]  ? calculate_sigpending+0x7b/0xa0
[   14.245355]  ? __pfx_kthread+0x10/0x10
[   14.245377]  ret_from_fork+0x116/0x1d0
[   14.245395]  ? __pfx_kthread+0x10/0x10
[   14.245415]  ret_from_fork_asm+0x1a/0x30
[   14.245447]  </TASK>
[   14.245458] 
[   14.253515] Allocated by task 276:
[   14.253663]  kasan_save_stack+0x45/0x70
[   14.253873]  kasan_save_track+0x18/0x40
[   14.254081]  kasan_save_alloc_info+0x3b/0x50
[   14.254347]  __kasan_kmalloc+0xb7/0xc0
[   14.254589]  __kmalloc_cache_noprof+0x189/0x420
[   14.254862]  kasan_strings+0xc0/0xe80
[   14.255028]  kunit_try_run_case+0x1a5/0x480
[   14.255217]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.255440]  kthread+0x337/0x6f0
[   14.255622]  ret_from_fork+0x116/0x1d0
[   14.255812]  ret_from_fork_asm+0x1a/0x30
[   14.255982] 
[   14.256076] Freed by task 276:
[   14.256229]  kasan_save_stack+0x45/0x70
[   14.256427]  kasan_save_track+0x18/0x40
[   14.256569]  kasan_save_free_info+0x3f/0x60
[   14.257022]  __kasan_slab_free+0x56/0x70
[   14.257218]  kfree+0x222/0x3f0
[   14.257343]  kasan_strings+0x2aa/0xe80
[   14.257507]  kunit_try_run_case+0x1a5/0x480
[   14.257710]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.258036]  kthread+0x337/0x6f0
[   14.258187]  ret_from_fork+0x116/0x1d0
[   14.258324]  ret_from_fork_asm+0x1a/0x30
[   14.258463] 
[   14.258535] The buggy address belongs to the object at ffff8881026c3d80
[   14.258535]  which belongs to the cache kmalloc-32 of size 32
[   14.258996] The buggy address is located 16 bytes inside of
[   14.258996]  freed 32-byte region [ffff8881026c3d80, ffff8881026c3da0)
[   14.259763] 
[   14.259861] The buggy address belongs to the physical page:
[   14.260414] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1026c3
[   14.260667] flags: 0x200000000000000(node=0|zone=2)
[   14.260838] page_type: f5(slab)
[   14.261709] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   14.262169] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   14.262508] page dumped because: kasan: bad access detected
[   14.262732] 
[   14.262833] Memory state around the buggy address:
[   14.263121]  ffff8881026c3c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.263404]  ffff8881026c3d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.263734] >ffff8881026c3d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.264294]                          ^
[   14.264489]  ffff8881026c3e00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   14.264773]  ffff8881026c3e80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.265119] ==================================================================