[   13.460034] ==================================================================
[   13.460304] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0
[   13.460794] Read of size 1 at addr ffff888102757490 by task kunit_try_catch/279
[   13.461088] 
[   13.461189] CPU: 0 UID: 0 PID: 279 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc3 #1 PREEMPT(voluntary) 
[   13.461232] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.461244] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.461264] Call Trace:
[   13.461275]  <TASK>
[   13.461288]  dump_stack_lvl+0x73/0xb0
[   13.461310]  print_report+0xd1/0x650
[   13.461344]  ? __virt_addr_valid+0x1db/0x2d0
[   13.461364]  ? strlen+0x8f/0xb0
[   13.461382]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.461405]  ? strlen+0x8f/0xb0
[   13.461423]  kasan_report+0x141/0x180
[   13.461446]  ? strlen+0x8f/0xb0
[   13.461469]  __asan_report_load1_noabort+0x18/0x20
[   13.461490]  strlen+0x8f/0xb0
[   13.461509]  kasan_strings+0x57b/0xe80
[   13.461528]  ? trace_hardirqs_on+0x37/0xe0
[   13.461550]  ? __pfx_kasan_strings+0x10/0x10
[   13.461581]  ? finish_task_switch.isra.0+0x153/0x700
[   13.461602]  ? __switch_to+0x5d9/0xf60
[   13.461621]  ? dequeue_task_fair+0x156/0x4e0
[   13.461646]  ? __schedule+0x10cc/0x2b30
[   13.461668]  ? __pfx_read_tsc+0x10/0x10
[   13.461686]  ? ktime_get_ts64+0x86/0x230
[   13.461711]  kunit_try_run_case+0x1a5/0x480
[   13.461733]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.461754]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.461782]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.461806]  ? __kthread_parkme+0x82/0x180
[   13.461826]  ? preempt_count_sub+0x50/0x80
[   13.461850]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.461873]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.461894]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.461917]  kthread+0x337/0x6f0
[   13.461937]  ? trace_preempt_on+0x20/0xc0
[   13.461959]  ? __pfx_kthread+0x10/0x10
[   13.461980]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.462002]  ? calculate_sigpending+0x7b/0xa0
[   13.462023]  ? __pfx_kthread+0x10/0x10
[   13.462045]  ret_from_fork+0x41/0x80
[   13.462066]  ? __pfx_kthread+0x10/0x10
[   13.462087]  ret_from_fork_asm+0x1a/0x30
[   13.462118]  </TASK>
[   13.462127] 
[   13.471594] Allocated by task 279:
[   13.471772]  kasan_save_stack+0x45/0x70
[   13.471917]  kasan_save_track+0x18/0x40
[   13.472089]  kasan_save_alloc_info+0x3b/0x50
[   13.472301]  __kasan_kmalloc+0xb7/0xc0
[   13.472557]  __kmalloc_cache_noprof+0x189/0x420
[   13.472712]  kasan_strings+0xc0/0xe80
[   13.472839]  kunit_try_run_case+0x1a5/0x480
[   13.473111]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.473403]  kthread+0x337/0x6f0
[   13.473583]  ret_from_fork+0x41/0x80
[   13.473816]  ret_from_fork_asm+0x1a/0x30
[   13.474067] 
[   13.474193] Freed by task 279:
[   13.474363]  kasan_save_stack+0x45/0x70
[   13.474575]  kasan_save_track+0x18/0x40
[   13.474714]  kasan_save_free_info+0x3f/0x60
[   13.474915]  __kasan_slab_free+0x56/0x70
[   13.475107]  kfree+0x222/0x3f0
[   13.475275]  kasan_strings+0x2aa/0xe80
[   13.475547]  kunit_try_run_case+0x1a5/0x480
[   13.475737]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.475911]  kthread+0x337/0x6f0
[   13.476031]  ret_from_fork+0x41/0x80
[   13.476186]  ret_from_fork_asm+0x1a/0x30
[   13.476391] 
[   13.476490] The buggy address belongs to the object at ffff888102757480
[   13.476490]  which belongs to the cache kmalloc-32 of size 32
[   13.477354] The buggy address is located 16 bytes inside of
[   13.477354]  freed 32-byte region [ffff888102757480, ffff8881027574a0)
[   13.477880] 
[   13.477980] The buggy address belongs to the physical page:
[   13.478230] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102757
[   13.478487] flags: 0x200000000000000(node=0|zone=2)
[   13.478841] page_type: f5(slab)
[   13.479095] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.479494] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.479793] page dumped because: kasan: bad access detected
[   13.479973] 
[   13.480042] Memory state around the buggy address:
[   13.480195]  ffff888102757380: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.480484]  ffff888102757400: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.480877] >ffff888102757480: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.481192]                          ^
[   13.481446]  ffff888102757500: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.481658]  ffff888102757580: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.482158] ==================================================================