[   13.979826] ==================================================================
[   13.980075] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   13.980454] Read of size 1 at addr ffff8881039fe2d0 by task kunit_try_catch/277
[   13.980716] 
[   13.980831] CPU: 1 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   13.980878] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.980889] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.980911] Call Trace:
[   13.980930]  <TASK>
[   13.980947]  dump_stack_lvl+0x73/0xb0
[   13.980976]  print_report+0xd1/0x610
[   13.980999]  ? __virt_addr_valid+0x1db/0x2d0
[   13.981024]  ? kasan_strings+0xcbc/0xe80
[   13.981045]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.981068]  ? kasan_strings+0xcbc/0xe80
[   13.981088]  kasan_report+0x141/0x180
[   13.981110]  ? kasan_strings+0xcbc/0xe80
[   13.981135]  __asan_report_load1_noabort+0x18/0x20
[   13.981158]  kasan_strings+0xcbc/0xe80
[   13.981178]  ? trace_hardirqs_on+0x37/0xe0
[   13.981201]  ? __pfx_kasan_strings+0x10/0x10
[   13.981293]  ? finish_task_switch.isra.0+0x153/0x700
[   13.981317]  ? __switch_to+0x47/0xf50
[   13.981345]  ? __schedule+0x10cc/0x2b60
[   13.981368]  ? __pfx_read_tsc+0x10/0x10
[   13.981389]  ? ktime_get_ts64+0x86/0x230
[   13.981413]  kunit_try_run_case+0x1a5/0x480
[   13.981438]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.981460]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.981484]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.981520]  ? __kthread_parkme+0x82/0x180
[   13.981541]  ? preempt_count_sub+0x50/0x80
[   13.981563]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.981587]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.981610]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.981634]  kthread+0x337/0x6f0
[   13.981653]  ? trace_preempt_on+0x20/0xc0
[   13.981674]  ? __pfx_kthread+0x10/0x10
[   13.981694]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.981715]  ? calculate_sigpending+0x7b/0xa0
[   13.981739]  ? __pfx_kthread+0x10/0x10
[   13.981759]  ret_from_fork+0x116/0x1d0
[   13.981778]  ? __pfx_kthread+0x10/0x10
[   13.981797]  ret_from_fork_asm+0x1a/0x30
[   13.981827]  </TASK>
[   13.981836] 
[   13.990313] Allocated by task 277:
[   13.990504]  kasan_save_stack+0x45/0x70
[   13.990668]  kasan_save_track+0x18/0x40
[   13.990860]  kasan_save_alloc_info+0x3b/0x50
[   13.991037]  __kasan_kmalloc+0xb7/0xc0
[   13.991393]  __kmalloc_cache_noprof+0x189/0x420
[   13.991616]  kasan_strings+0xc0/0xe80
[   13.991804]  kunit_try_run_case+0x1a5/0x480
[   13.991981]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.992271]  kthread+0x337/0x6f0
[   13.992446]  ret_from_fork+0x116/0x1d0
[   13.992615]  ret_from_fork_asm+0x1a/0x30
[   13.992782] 
[   13.992874] Freed by task 277:
[   13.993033]  kasan_save_stack+0x45/0x70
[   13.993345]  kasan_save_track+0x18/0x40
[   13.993493]  kasan_save_free_info+0x3f/0x60
[   13.993654]  __kasan_slab_free+0x56/0x70
[   13.993792]  kfree+0x222/0x3f0
[   13.993915]  kasan_strings+0x2aa/0xe80
[   13.994047]  kunit_try_run_case+0x1a5/0x480
[   13.994190]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.994434]  kthread+0x337/0x6f0
[   13.994613]  ret_from_fork+0x116/0x1d0
[   13.995198]  ret_from_fork_asm+0x1a/0x30
[   13.995644] 
[   13.995739] The buggy address belongs to the object at ffff8881039fe2c0
[   13.995739]  which belongs to the cache kmalloc-32 of size 32
[   13.996096] The buggy address is located 16 bytes inside of
[   13.996096]  freed 32-byte region [ffff8881039fe2c0, ffff8881039fe2e0)
[   13.996762] 
[   13.996861] The buggy address belongs to the physical page:
[   13.997118] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039fe
[   13.997477] flags: 0x200000000000000(node=0|zone=2)
[   13.997822] page_type: f5(slab)
[   13.997942] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.998175] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.998404] page dumped because: kasan: bad access detected
[   13.998885] 
[   13.998981] Memory state around the buggy address:
[   13.999285]  ffff8881039fe180: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.999791]  ffff8881039fe200: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   14.000226] >ffff8881039fe280: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   14.000445]                                                  ^
[   14.000677]  ffff8881039fe300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.001000]  ffff8881039fe380: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   14.001606] ==================================================================