[   15.036992] ==================================================================
[   15.037528] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0
[   15.037745] Read of size 1 at addr ffff888102a5ed10 by task kunit_try_catch/276
[   15.038055] 
[   15.038164] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   15.038208] Tainted: [B]=BAD_PAGE, [N]=TEST
[   15.038232] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   15.038312] Call Trace:
[   15.038331]  <TASK>
[   15.038348]  dump_stack_lvl+0x73/0xb0
[   15.038375]  print_report+0xd1/0x610
[   15.038397]  ? __virt_addr_valid+0x1db/0x2d0
[   15.038429]  ? strlen+0x8f/0xb0
[   15.038446]  ? kasan_complete_mode_report_info+0x64/0x200
[   15.038470]  ? strlen+0x8f/0xb0
[   15.038487]  kasan_report+0x141/0x180
[   15.038509]  ? strlen+0x8f/0xb0
[   15.038531]  __asan_report_load1_noabort+0x18/0x20
[   15.038567]  strlen+0x8f/0xb0
[   15.038585]  kasan_strings+0x57b/0xe80
[   15.038605]  ? trace_hardirqs_on+0x37/0xe0
[   15.038628]  ? __pfx_kasan_strings+0x10/0x10
[   15.038649]  ? finish_task_switch.isra.0+0x153/0x700
[   15.038672]  ? __switch_to+0x47/0xf50
[   15.038697]  ? __schedule+0x10cc/0x2b60
[   15.038720]  ? __pfx_read_tsc+0x10/0x10
[   15.038751]  ? ktime_get_ts64+0x86/0x230
[   15.038776]  kunit_try_run_case+0x1a5/0x480
[   15.038801]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.038836]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   15.038861]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   15.038885]  ? __kthread_parkme+0x82/0x180
[   15.038905]  ? preempt_count_sub+0x50/0x80
[   15.038929]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.038954]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.038979]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   15.039005]  kthread+0x337/0x6f0
[   15.039024]  ? trace_preempt_on+0x20/0xc0
[   15.039046]  ? __pfx_kthread+0x10/0x10
[   15.039067]  ? _raw_spin_unlock_irq+0x47/0x80
[   15.039089]  ? calculate_sigpending+0x7b/0xa0
[   15.039114]  ? __pfx_kthread+0x10/0x10
[   15.039136]  ret_from_fork+0x116/0x1d0
[   15.039155]  ? __pfx_kthread+0x10/0x10
[   15.039176]  ret_from_fork_asm+0x1a/0x30
[   15.039217]  </TASK>
[   15.039226] 
[   15.051049] Allocated by task 276:
[   15.051220]  kasan_save_stack+0x45/0x70
[   15.051620]  kasan_save_track+0x18/0x40
[   15.051795]  kasan_save_alloc_info+0x3b/0x50
[   15.051995]  __kasan_kmalloc+0xb7/0xc0
[   15.052178]  __kmalloc_cache_noprof+0x189/0x420
[   15.052962]  kasan_strings+0xc0/0xe80
[   15.053139]  kunit_try_run_case+0x1a5/0x480
[   15.053522]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.053778]  kthread+0x337/0x6f0
[   15.053938]  ret_from_fork+0x116/0x1d0
[   15.054115]  ret_from_fork_asm+0x1a/0x30
[   15.054726] 
[   15.054831] Freed by task 276:
[   15.055167]  kasan_save_stack+0x45/0x70
[   15.055649]  kasan_save_track+0x18/0x40
[   15.055842]  kasan_save_free_info+0x3f/0x60
[   15.056035]  __kasan_slab_free+0x56/0x70
[   15.056213]  kfree+0x222/0x3f0
[   15.056435]  kasan_strings+0x2aa/0xe80
[   15.056625]  kunit_try_run_case+0x1a5/0x480
[   15.056820]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.057049]  kthread+0x337/0x6f0
[   15.057190]  ret_from_fork+0x116/0x1d0
[   15.057901]  ret_from_fork_asm+0x1a/0x30
[   15.058231] 
[   15.058695] The buggy address belongs to the object at ffff888102a5ed00
[   15.058695]  which belongs to the cache kmalloc-32 of size 32
[   15.059735] The buggy address is located 16 bytes inside of
[   15.059735]  freed 32-byte region [ffff888102a5ed00, ffff888102a5ed20)
[   15.060230] 
[   15.060375] The buggy address belongs to the physical page:
[   15.061012] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a5e
[   15.061421] flags: 0x200000000000000(node=0|zone=2)
[   15.061654] page_type: f5(slab)
[   15.061803] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   15.062123] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   15.062713] page dumped because: kasan: bad access detected
[   15.062950] 
[   15.063037] Memory state around the buggy address:
[   15.063404]  ffff888102a5ec00: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   15.063718]  ffff888102a5ec80: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   15.063999] >ffff888102a5ed00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   15.064391]                          ^
[   15.064589]  ffff888102a5ed80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   15.064879]  ffff888102a5ee00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   15.065152] ==================================================================