[   13.438627] ==================================================================
[   13.438953] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   13.439404] Read of size 1 at addr ffff888102757490 by task kunit_try_catch/279
[   13.439679] 
[   13.439787] CPU: 0 UID: 0 PID: 279 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc3 #1 PREEMPT(voluntary) 
[   13.439833] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.439846] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.439866] Call Trace:
[   13.439881]  <TASK>
[   13.439895]  dump_stack_lvl+0x73/0xb0
[   13.439918]  print_report+0xd1/0x650
[   13.439940]  ? __virt_addr_valid+0x1db/0x2d0
[   13.439961]  ? kasan_strings+0xcbc/0xe80
[   13.439982]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.440005]  ? kasan_strings+0xcbc/0xe80
[   13.440027]  kasan_report+0x141/0x180
[   13.440049]  ? kasan_strings+0xcbc/0xe80
[   13.440075]  __asan_report_load1_noabort+0x18/0x20
[   13.440096]  kasan_strings+0xcbc/0xe80
[   13.440115]  ? trace_hardirqs_on+0x37/0xe0
[   13.440289]  ? __pfx_kasan_strings+0x10/0x10
[   13.440317]  ? finish_task_switch.isra.0+0x153/0x700
[   13.440353]  ? __switch_to+0x5d9/0xf60
[   13.440373]  ? dequeue_task_fair+0x156/0x4e0
[   13.440397]  ? __schedule+0x10cc/0x2b30
[   13.440421]  ? __pfx_read_tsc+0x10/0x10
[   13.440439]  ? ktime_get_ts64+0x86/0x230
[   13.440464]  kunit_try_run_case+0x1a5/0x480
[   13.440488]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.440509]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.440532]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.440555]  ? __kthread_parkme+0x82/0x180
[   13.440576]  ? preempt_count_sub+0x50/0x80
[   13.440600]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.440623]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.440645]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.440719]  kthread+0x337/0x6f0
[   13.440743]  ? trace_preempt_on+0x20/0xc0
[   13.440764]  ? __pfx_kthread+0x10/0x10
[   13.440786]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.440809]  ? calculate_sigpending+0x7b/0xa0
[   13.440831]  ? __pfx_kthread+0x10/0x10
[   13.440854]  ret_from_fork+0x41/0x80
[   13.440874]  ? __pfx_kthread+0x10/0x10
[   13.440896]  ret_from_fork_asm+0x1a/0x30
[   13.440927]  </TASK>
[   13.440937] 
[   13.449044] Allocated by task 279:
[   13.449209]  kasan_save_stack+0x45/0x70
[   13.449427]  kasan_save_track+0x18/0x40
[   13.449575]  kasan_save_alloc_info+0x3b/0x50
[   13.449719]  __kasan_kmalloc+0xb7/0xc0
[   13.449853]  __kmalloc_cache_noprof+0x189/0x420
[   13.450005]  kasan_strings+0xc0/0xe80
[   13.450191]  kunit_try_run_case+0x1a5/0x480
[   13.450545]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.450944]  kthread+0x337/0x6f0
[   13.451115]  ret_from_fork+0x41/0x80
[   13.451286]  ret_from_fork_asm+0x1a/0x30
[   13.451433] 
[   13.451502] Freed by task 279:
[   13.451610]  kasan_save_stack+0x45/0x70
[   13.451745]  kasan_save_track+0x18/0x40
[   13.452153]  kasan_save_free_info+0x3f/0x60
[   13.452381]  __kasan_slab_free+0x56/0x70
[   13.452647]  kfree+0x222/0x3f0
[   13.452819]  kasan_strings+0x2aa/0xe80
[   13.453009]  kunit_try_run_case+0x1a5/0x480
[   13.453213]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.453465]  kthread+0x337/0x6f0
[   13.453651]  ret_from_fork+0x41/0x80
[   13.453787]  ret_from_fork_asm+0x1a/0x30
[   13.453928] 
[   13.454022] The buggy address belongs to the object at ffff888102757480
[   13.454022]  which belongs to the cache kmalloc-32 of size 32
[   13.454817] The buggy address is located 16 bytes inside of
[   13.454817]  freed 32-byte region [ffff888102757480, ffff8881027574a0)
[   13.455183] 
[   13.455253] The buggy address belongs to the physical page:
[   13.455437] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102757
[   13.455765] flags: 0x200000000000000(node=0|zone=2)
[   13.455997] page_type: f5(slab)
[   13.456276] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.456807] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.457038] page dumped because: kasan: bad access detected
[   13.457471] 
[   13.457571] Memory state around the buggy address:
[   13.457799]  ffff888102757380: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.458120]  ffff888102757400: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.458493] >ffff888102757480: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.458764]                          ^
[   13.458938]  ffff888102757500: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.459295]  ffff888102757580: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.459618] ==================================================================