[   13.918047] ==================================================================
[   13.920456] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0
[   13.920995] Read of size 1 at addr ffff888103994910 by task kunit_try_catch/276
[   13.921478] 
[   13.921587] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   13.921638] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.921651] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.921685] Call Trace:
[   13.921700]  <TASK>
[   13.921720]  dump_stack_lvl+0x73/0xb0
[   13.921751]  print_report+0xd1/0x650
[   13.921775]  ? __virt_addr_valid+0x1db/0x2d0
[   13.921798]  ? strcmp+0xb0/0xc0
[   13.921818]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.921840]  ? strcmp+0xb0/0xc0
[   13.921860]  kasan_report+0x141/0x180
[   13.921882]  ? strcmp+0xb0/0xc0
[   13.921906]  __asan_report_load1_noabort+0x18/0x20
[   13.921930]  strcmp+0xb0/0xc0
[   13.921953]  kasan_strings+0x431/0xe80
[   13.921972]  ? trace_hardirqs_on+0x37/0xe0
[   13.921996]  ? __pfx_kasan_strings+0x10/0x10
[   13.922016]  ? finish_task_switch.isra.0+0x153/0x700
[   13.922038]  ? __switch_to+0x47/0xf50
[   13.922063]  ? __schedule+0x10cc/0x2b60
[   13.922085]  ? __pfx_read_tsc+0x10/0x10
[   13.922106]  ? ktime_get_ts64+0x86/0x230
[   13.922129]  kunit_try_run_case+0x1a5/0x480
[   13.922154]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.922177]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.922200]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.922235]  ? __kthread_parkme+0x82/0x180
[   13.922255]  ? preempt_count_sub+0x50/0x80
[   13.922291]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.922314]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.922336]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.922358]  kthread+0x337/0x6f0
[   13.922377]  ? trace_preempt_on+0x20/0xc0
[   13.922398]  ? __pfx_kthread+0x10/0x10
[   13.922418]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.922453]  ? calculate_sigpending+0x7b/0xa0
[   13.922476]  ? __pfx_kthread+0x10/0x10
[   13.922495]  ret_from_fork+0x116/0x1d0
[   13.922513]  ? __pfx_kthread+0x10/0x10
[   13.922533]  ret_from_fork_asm+0x1a/0x30
[   13.922562]  </TASK>
[   13.922574] 
[   13.935006] Allocated by task 276:
[   13.935172]  kasan_save_stack+0x45/0x70
[   13.935628]  kasan_save_track+0x18/0x40
[   13.936043]  kasan_save_alloc_info+0x3b/0x50
[   13.936544]  __kasan_kmalloc+0xb7/0xc0
[   13.936943]  __kmalloc_cache_noprof+0x189/0x420
[   13.937778]  kasan_strings+0xc0/0xe80
[   13.938136]  kunit_try_run_case+0x1a5/0x480
[   13.938619]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.938811]  kthread+0x337/0x6f0
[   13.938936]  ret_from_fork+0x116/0x1d0
[   13.939070]  ret_from_fork_asm+0x1a/0x30
[   13.939241] 
[   13.939464] Freed by task 276:
[   13.939742]  kasan_save_stack+0x45/0x70
[   13.940083]  kasan_save_track+0x18/0x40
[   13.940500]  kasan_save_free_info+0x3f/0x60
[   13.940919]  __kasan_slab_free+0x56/0x70
[   13.941664]  kfree+0x222/0x3f0
[   13.941976]  kasan_strings+0x2aa/0xe80
[   13.942406]  kunit_try_run_case+0x1a5/0x480
[   13.942804]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.943053]  kthread+0x337/0x6f0
[   13.943178]  ret_from_fork+0x116/0x1d0
[   13.943731]  ret_from_fork_asm+0x1a/0x30
[   13.944106] 
[   13.944281] The buggy address belongs to the object at ffff888103994900
[   13.944281]  which belongs to the cache kmalloc-32 of size 32
[   13.945539] The buggy address is located 16 bytes inside of
[   13.945539]  freed 32-byte region [ffff888103994900, ffff888103994920)
[   13.945923] 
[   13.946001] The buggy address belongs to the physical page:
[   13.946177] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103994
[   13.947033] flags: 0x200000000000000(node=0|zone=2)
[   13.947697] page_type: f5(slab)
[   13.948049] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.948943] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.949928] page dumped because: kasan: bad access detected
[   13.950646] 
[   13.950725] Memory state around the buggy address:
[   13.950894]  ffff888103994800: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.951111]  ffff888103994880: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   13.951704] >ffff888103994900: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.952382]                          ^
[   13.952762]  ffff888103994980: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.953745]  ffff888103994a00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.954457] ==================================================================