[   16.277353] ==================================================================
[   16.278178] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0
[   16.278743] Read of size 1 at addr ffff888102b6e290 by task kunit_try_catch/277
[   16.279095] 
[   16.279252] CPU: 0 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250515 #1 PREEMPT(voluntary) 
[   16.279349] Tainted: [B]=BAD_PAGE, [N]=TEST
[   16.279371] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   16.279396] Call Trace:
[   16.279421]  <TASK>
[   16.279443]  dump_stack_lvl+0x73/0xb0
[   16.279667]  print_report+0xd1/0x650
[   16.279721]  ? __virt_addr_valid+0x1db/0x2d0
[   16.279766]  ? strlen+0x8f/0xb0
[   16.279807]  ? kasan_complete_mode_report_info+0x64/0x200
[   16.279852]  ? strlen+0x8f/0xb0
[   16.279894]  kasan_report+0x141/0x180
[   16.279943]  ? strlen+0x8f/0xb0
[   16.279997]  __asan_report_load1_noabort+0x18/0x20
[   16.280040]  strlen+0x8f/0xb0
[   16.280085]  kasan_strings+0x57b/0xe80
[   16.280126]  ? trace_hardirqs_on+0x37/0xe0
[   16.280174]  ? __pfx_kasan_strings+0x10/0x10
[   16.280215]  ? finish_task_switch.isra.0+0x153/0x700
[   16.280273]  ? __switch_to+0x47/0xf50
[   16.280327]  ? __schedule+0x10cc/0x2b60
[   16.280373]  ? __pfx_read_tsc+0x10/0x10
[   16.280415]  ? ktime_get_ts64+0x86/0x230
[   16.280473]  kunit_try_run_case+0x1a5/0x480
[   16.280514]  ? __pfx_kunit_try_run_case+0x10/0x10
[   16.280550]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   16.280581]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   16.280603]  ? __kthread_parkme+0x82/0x180
[   16.280623]  ? preempt_count_sub+0x50/0x80
[   16.280645]  ? __pfx_kunit_try_run_case+0x10/0x10
[   16.280667]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   16.280689]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   16.280711]  kthread+0x337/0x6f0
[   16.280730]  ? trace_preempt_on+0x20/0xc0
[   16.280752]  ? __pfx_kthread+0x10/0x10
[   16.280772]  ? _raw_spin_unlock_irq+0x47/0x80
[   16.280792]  ? calculate_sigpending+0x7b/0xa0
[   16.280816]  ? __pfx_kthread+0x10/0x10
[   16.280837]  ret_from_fork+0x116/0x1d0
[   16.280854]  ? __pfx_kthread+0x10/0x10
[   16.280876]  ret_from_fork_asm+0x1a/0x30
[   16.280906]  </TASK>
[   16.280918] 
[   16.292819] Allocated by task 277:
[   16.293104]  kasan_save_stack+0x45/0x70
[   16.293327]  kasan_save_track+0x18/0x40
[   16.293634]  kasan_save_alloc_info+0x3b/0x50
[   16.294005]  __kasan_kmalloc+0xb7/0xc0
[   16.294189]  __kmalloc_cache_noprof+0x189/0x420
[   16.294716]  kasan_strings+0xc0/0xe80
[   16.295086]  kunit_try_run_case+0x1a5/0x480
[   16.295403]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   16.295984]  kthread+0x337/0x6f0
[   16.296275]  ret_from_fork+0x116/0x1d0
[   16.297067]  ret_from_fork_asm+0x1a/0x30
[   16.297386] 
[   16.297553] Freed by task 277:
[   16.297747]  kasan_save_stack+0x45/0x70
[   16.297909]  kasan_save_track+0x18/0x40
[   16.298146]  kasan_save_free_info+0x3f/0x60
[   16.298474]  __kasan_slab_free+0x56/0x70
[   16.298705]  kfree+0x222/0x3f0
[   16.298850]  kasan_strings+0x2aa/0xe80
[   16.299071]  kunit_try_run_case+0x1a5/0x480
[   16.299579]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   16.299923]  kthread+0x337/0x6f0
[   16.300254]  ret_from_fork+0x116/0x1d0
[   16.300742]  ret_from_fork_asm+0x1a/0x30
[   16.301080] 
[   16.301261] The buggy address belongs to the object at ffff888102b6e280
[   16.301261]  which belongs to the cache kmalloc-32 of size 32
[   16.301772] The buggy address is located 16 bytes inside of
[   16.301772]  freed 32-byte region [ffff888102b6e280, ffff888102b6e2a0)
[   16.302135] 
[   16.302262] The buggy address belongs to the physical page:
[   16.303310] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b6e
[   16.304018] flags: 0x200000000000000(node=0|zone=2)
[   16.304426] page_type: f5(slab)
[   16.304888] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   16.305616] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   16.306201] page dumped because: kasan: bad access detected
[   16.306811] 
[   16.307018] Memory state around the buggy address:
[   16.307395]  ffff888102b6e180: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   16.308243]  ffff888102b6e200: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   16.308958] >ffff888102b6e280: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   16.309401]                          ^
[   16.309800]  ffff888102b6e300: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   16.310281]  ffff888102b6e380: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   16.310800] ==================================================================