[   27.110100] ==================================================================
[   27.110389] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0
[   27.110678] Read of size 1 at addr ffff8881060c6b10 by task kunit_try_catch/307
[   27.111020] 
[   27.111126] CPU: 1 UID: 0 PID: 307 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5-next-20250710 #1 PREEMPT(voluntary) 
[   27.111173] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.111185] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   27.111208] Call Trace:
[   27.111221]  <TASK>
[   27.111239]  dump_stack_lvl+0x73/0xb0
[   27.111266]  print_report+0xd1/0x610
[   27.111292]  ? __virt_addr_valid+0x1db/0x2d0
[   27.111316]  ? strlen+0x8f/0xb0
[   27.111338]  ? kasan_complete_mode_report_info+0x64/0x200
[   27.111365]  ? strlen+0x8f/0xb0
[   27.111387]  kasan_report+0x141/0x180
[   27.111411]  ? strlen+0x8f/0xb0
[   27.111439]  __asan_report_load1_noabort+0x18/0x20
[   27.111464]  strlen+0x8f/0xb0
[   27.111486]  kasan_strings+0x57b/0xe80
[   27.111506]  ? trace_hardirqs_on+0x37/0xe0
[   27.111548]  ? __pfx_kasan_strings+0x10/0x10
[   27.111570]  ? finish_task_switch.isra.0+0x153/0x700
[   27.111591]  ? __switch_to+0x47/0xf80
[   27.111617]  ? __schedule+0x10cc/0x2b60
[   27.111640]  ? __pfx_read_tsc+0x10/0x10
[   27.111661]  ? ktime_get_ts64+0x86/0x230
[   27.111685]  kunit_try_run_case+0x1a5/0x480
[   27.111715]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.111735]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   27.111759]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   27.111864]  ? __kthread_parkme+0x82/0x180
[   27.111884]  ? preempt_count_sub+0x50/0x80
[   27.111907]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.111929]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.111954]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   27.111980]  kthread+0x337/0x6f0
[   27.112000]  ? trace_preempt_on+0x20/0xc0
[   27.112022]  ? __pfx_kthread+0x10/0x10
[   27.112043]  ? _raw_spin_unlock_irq+0x47/0x80
[   27.112064]  ? calculate_sigpending+0x7b/0xa0
[   27.112087]  ? __pfx_kthread+0x10/0x10
[   27.112109]  ret_from_fork+0x116/0x1d0
[   27.112127]  ? __pfx_kthread+0x10/0x10
[   27.112148]  ret_from_fork_asm+0x1a/0x30
[   27.112179]  </TASK>
[   27.112190] 
[   27.119627] Allocated by task 307:
[   27.119877]  kasan_save_stack+0x45/0x70
[   27.120082]  kasan_save_track+0x18/0x40
[   27.120277]  kasan_save_alloc_info+0x3b/0x50
[   27.120515]  __kasan_kmalloc+0xb7/0xc0
[   27.120673]  __kmalloc_cache_noprof+0x189/0x420
[   27.121027]  kasan_strings+0xc0/0xe80
[   27.121190]  kunit_try_run_case+0x1a5/0x480
[   27.121380]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.121651]  kthread+0x337/0x6f0
[   27.121854]  ret_from_fork+0x116/0x1d0
[   27.121989]  ret_from_fork_asm+0x1a/0x30
[   27.122185] 
[   27.122276] Freed by task 307:
[   27.122427]  kasan_save_stack+0x45/0x70
[   27.122644]  kasan_save_track+0x18/0x40
[   27.122892]  kasan_save_free_info+0x3f/0x60
[   27.123052]  __kasan_slab_free+0x56/0x70
[   27.123183]  kfree+0x222/0x3f0
[   27.123318]  kasan_strings+0x2aa/0xe80
[   27.123501]  kunit_try_run_case+0x1a5/0x480
[   27.123733]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.124059]  kthread+0x337/0x6f0
[   27.124221]  ret_from_fork+0x116/0x1d0
[   27.124365]  ret_from_fork_asm+0x1a/0x30
[   27.124499] 
[   27.124585] The buggy address belongs to the object at ffff8881060c6b00
[   27.124585]  which belongs to the cache kmalloc-32 of size 32
[   27.125209] The buggy address is located 16 bytes inside of
[   27.125209]  freed 32-byte region [ffff8881060c6b00, ffff8881060c6b20)
[   27.125843] 
[   27.125943] The buggy address belongs to the physical page:
[   27.126189] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1060c6
[   27.126565] flags: 0x200000000000000(node=0|zone=2)
[   27.126755] page_type: f5(slab)
[   27.126985] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   27.127239] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   27.127465] page dumped because: kasan: bad access detected
[   27.127718] 
[   27.127879] Memory state around the buggy address:
[   27.128108]  ffff8881060c6a00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.128429]  ffff8881060c6a80: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   27.128755] >ffff8881060c6b00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.129259]                          ^
[   27.129453]  ffff8881060c6b80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   27.129761]  ffff8881060c6c00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.130142] ==================================================================