[   28.892457] ==================================================================
[   28.892788] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80
[   28.893259] Read of size 1 at addr ffff888106048f50 by task kunit_try_catch/307
[   28.893482] 
[   28.893567] CPU: 1 UID: 0 PID: 307 Comm: kunit_try_catch Tainted: G    B   W        N  6.16.0-rc7-next-20250724 #1 PREEMPT(voluntary) 
[   28.893629] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST
[   28.893642] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   28.893665] Call Trace:
[   28.893684]  <TASK>
[   28.893703]  dump_stack_lvl+0x73/0xb0
[   28.893731]  print_report+0xd1/0x640
[   28.893754]  ? __virt_addr_valid+0x1db/0x2d0
[   28.893779]  ? strnlen+0x73/0x80
[   28.893798]  ? kasan_complete_mode_report_info+0x64/0x200
[   28.893824]  ? strnlen+0x73/0x80
[   28.893843]  kasan_report+0x141/0x180
[   28.893866]  ? strnlen+0x73/0x80
[   28.893889]  __asan_report_load1_noabort+0x18/0x20
[   28.893913]  strnlen+0x73/0x80
[   28.893934]  kasan_strings+0x615/0xe80
[   28.893953]  ? trace_hardirqs_on+0x37/0xe0
[   28.893977]  ? __pfx_kasan_strings+0x10/0x10
[   28.893997]  ? finish_task_switch.isra.0+0x153/0x700
[   28.894019]  ? __switch_to+0x47/0xf80
[   28.894044]  ? __schedule+0x10da/0x2b60
[   28.894069]  ? __pfx_read_tsc+0x10/0x10
[   28.894090]  ? ktime_get_ts64+0x86/0x230
[   28.894114]  kunit_try_run_case+0x1a5/0x480
[   28.894139]  ? __pfx_kunit_try_run_case+0x10/0x10
[   28.894161]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   28.894186]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   28.894210]  ? __kthread_parkme+0x82/0x180
[   28.894230]  ? preempt_count_sub+0x50/0x80
[   28.894252]  ? __pfx_kunit_try_run_case+0x10/0x10
[   28.894275]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   28.894298]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   28.894321]  kthread+0x337/0x6f0
[   28.894340]  ? trace_preempt_on+0x20/0xc0
[   28.894361]  ? __pfx_kthread+0x10/0x10
[   28.894381]  ? _raw_spin_unlock_irq+0x47/0x80
[   28.894440]  ? calculate_sigpending+0x7b/0xa0
[   28.894463]  ? __pfx_kthread+0x10/0x10
[   28.894484]  ret_from_fork+0x116/0x1d0
[   28.894562]  ? __pfx_kthread+0x10/0x10
[   28.894594]  ret_from_fork_asm+0x1a/0x30
[   28.894627]  </TASK>
[   28.894638] 
[   28.903121] Allocated by task 307:
[   28.903315]  kasan_save_stack+0x45/0x70
[   28.903740]  kasan_save_track+0x18/0x40
[   28.903926]  kasan_save_alloc_info+0x3b/0x50
[   28.904128]  __kasan_kmalloc+0xb7/0xc0
[   28.904308]  __kmalloc_cache_noprof+0x189/0x420
[   28.904469]  kasan_strings+0xc0/0xe80
[   28.904603]  kunit_try_run_case+0x1a5/0x480
[   28.904745]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   28.904913]  kthread+0x337/0x6f0
[   28.905389]  ret_from_fork+0x116/0x1d0
[   28.906745]  ret_from_fork_asm+0x1a/0x30
[   28.907418] 
[   28.907518] Freed by task 307:
[   28.907688]  kasan_save_stack+0x45/0x70
[   28.908259]  kasan_save_track+0x18/0x40
[   28.908449]  kasan_save_free_info+0x3f/0x60
[   28.908664]  __kasan_slab_free+0x56/0x70
[   28.909480]  kfree+0x222/0x3f0
[   28.909648]  kasan_strings+0x2aa/0xe80
[   28.910109]  kunit_try_run_case+0x1a5/0x480
[   28.910745]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   28.911485]  kthread+0x337/0x6f0
[   28.912245]  ret_from_fork+0x116/0x1d0
[   28.912496]  ret_from_fork_asm+0x1a/0x30
[   28.913089] 
[   28.913478] The buggy address belongs to the object at ffff888106048f40
[   28.913478]  which belongs to the cache kmalloc-32 of size 32
[   28.914454] The buggy address is located 16 bytes inside of
[   28.914454]  freed 32-byte region [ffff888106048f40, ffff888106048f60)
[   28.915066] 
[   28.915236] The buggy address belongs to the physical page:
[   28.915478] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106048
[   28.915874] flags: 0x200000000000000(node=0|zone=2)
[   28.916582] page_type: f5(slab)
[   28.916908] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   28.917435] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000
[   28.918130] page dumped because: kasan: bad access detected
[   28.918542] 
[   28.918653] Memory state around the buggy address:
[   28.919199]  ffff888106048e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   28.919507]  ffff888106048e80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   28.920080] >ffff888106048f00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   28.920384]                                                  ^
[   28.920774]  ffff888106048f80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   28.921184]  ffff888106049000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   28.921494] ==================================================================