[   14.983771] ==================================================================
[   14.984707] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0
[   14.984986] Read of size 1 at addr ffff888102a5ed10 by task kunit_try_catch/276
[   14.985291] 
[   14.985390] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   14.985436] Tainted: [B]=BAD_PAGE, [N]=TEST
[   14.985448] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   14.985472] Call Trace:
[   14.985484]  <TASK>
[   14.985499]  dump_stack_lvl+0x73/0xb0
[   14.985527]  print_report+0xd1/0x610
[   14.986043]  ? __virt_addr_valid+0x1db/0x2d0
[   14.986081]  ? strcmp+0xb0/0xc0
[   14.986098]  ? kasan_complete_mode_report_info+0x64/0x200
[   14.986124]  ? strcmp+0xb0/0xc0
[   14.986142]  kasan_report+0x141/0x180
[   14.986164]  ? strcmp+0xb0/0xc0
[   14.986187]  __asan_report_load1_noabort+0x18/0x20
[   14.986212]  strcmp+0xb0/0xc0
[   14.986252]  kasan_strings+0x431/0xe80
[   14.986272]  ? trace_hardirqs_on+0x37/0xe0
[   14.986313]  ? __pfx_kasan_strings+0x10/0x10
[   14.986334]  ? finish_task_switch.isra.0+0x153/0x700
[   14.986358]  ? __switch_to+0x47/0xf50
[   14.986383]  ? __schedule+0x10cc/0x2b60
[   14.986421]  ? __pfx_read_tsc+0x10/0x10
[   14.986443]  ? ktime_get_ts64+0x86/0x230
[   14.986467]  kunit_try_run_case+0x1a5/0x480
[   14.986493]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.986517]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   14.986541]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   14.986576]  ? __kthread_parkme+0x82/0x180
[   14.986597]  ? preempt_count_sub+0x50/0x80
[   14.986621]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.986646]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.986671]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   14.986698]  kthread+0x337/0x6f0
[   14.986718]  ? trace_preempt_on+0x20/0xc0
[   14.986740]  ? __pfx_kthread+0x10/0x10
[   14.986761]  ? _raw_spin_unlock_irq+0x47/0x80
[   14.986783]  ? calculate_sigpending+0x7b/0xa0
[   14.986808]  ? __pfx_kthread+0x10/0x10
[   14.986831]  ret_from_fork+0x116/0x1d0
[   14.986851]  ? __pfx_kthread+0x10/0x10
[   14.986872]  ret_from_fork_asm+0x1a/0x30
[   14.986903]  </TASK>
[   14.986915] 
[   14.996184] Allocated by task 276:
[   14.996490]  kasan_save_stack+0x45/0x70
[   14.996712]  kasan_save_track+0x18/0x40
[   14.996952]  kasan_save_alloc_info+0x3b/0x50
[   14.997262]  __kasan_kmalloc+0xb7/0xc0
[   14.997436]  __kmalloc_cache_noprof+0x189/0x420
[   14.997791]  kasan_strings+0xc0/0xe80
[   14.997998]  kunit_try_run_case+0x1a5/0x480
[   14.998220]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.998407]  kthread+0x337/0x6f0
[   14.998528]  ret_from_fork+0x116/0x1d0
[   14.998771]  ret_from_fork_asm+0x1a/0x30
[   14.999053] 
[   14.999151] Freed by task 276:
[   14.999350]  kasan_save_stack+0x45/0x70
[   14.999599]  kasan_save_track+0x18/0x40
[   14.999862]  kasan_save_free_info+0x3f/0x60
[   15.000046]  __kasan_slab_free+0x56/0x70
[   15.000245]  kfree+0x222/0x3f0
[   15.000363]  kasan_strings+0x2aa/0xe80
[   15.000545]  kunit_try_run_case+0x1a5/0x480
[   15.000774]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.001167]  kthread+0x337/0x6f0
[   15.001401]  ret_from_fork+0x116/0x1d0
[   15.001541]  ret_from_fork_asm+0x1a/0x30
[   15.001691] 
[   15.001762] The buggy address belongs to the object at ffff888102a5ed00
[   15.001762]  which belongs to the cache kmalloc-32 of size 32
[   15.002295] The buggy address is located 16 bytes inside of
[   15.002295]  freed 32-byte region [ffff888102a5ed00, ffff888102a5ed20)
[   15.002821] 
[   15.002905] The buggy address belongs to the physical page:
[   15.003155] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a5e
[   15.003543] flags: 0x200000000000000(node=0|zone=2)
[   15.003835] page_type: f5(slab)
[   15.004026] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   15.004453] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   15.004792] page dumped because: kasan: bad access detected
[   15.005024] 
[   15.005118] Memory state around the buggy address:
[   15.005327]  ffff888102a5ec00: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   15.005721]  ffff888102a5ec80: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   15.006002] >ffff888102a5ed00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   15.006213]                          ^
[   15.006340]  ffff888102a5ed80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   15.006850]  ffff888102a5ee00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   15.007155] ==================================================================