[   23.788598] ==================================================================
[   23.789250] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0
[   23.789521] Read of size 1 at addr ffff888102596f90 by task kunit_try_catch/288
[   23.789814] 
[   23.789900] CPU: 0 UID: 0 PID: 288 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc3-next-20250625 #1 PREEMPT(voluntary) 
[   23.789965] Tainted: [B]=BAD_PAGE, [N]=TEST
[   23.789978] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   23.790000] Call Trace:
[   23.790020]  <TASK>
[   23.790040]  dump_stack_lvl+0x73/0xb0
[   23.790066]  print_report+0xd1/0x650
[   23.790087]  ? __virt_addr_valid+0x1db/0x2d0
[   23.790110]  ? strlen+0x8f/0xb0
[   23.790128]  ? kasan_complete_mode_report_info+0x64/0x200
[   23.790153]  ? strlen+0x8f/0xb0
[   23.790172]  kasan_report+0x141/0x180
[   23.790191]  ? strlen+0x8f/0xb0
[   23.790214]  __asan_report_load1_noabort+0x18/0x20
[   23.790236]  strlen+0x8f/0xb0
[   23.790255]  kasan_strings+0x57b/0xe80
[   23.790274]  ? trace_hardirqs_on+0x37/0xe0
[   23.790296]  ? __pfx_kasan_strings+0x10/0x10
[   23.790314]  ? finish_task_switch.isra.0+0x153/0x700
[   23.790335]  ? __switch_to+0x47/0xf50
[   23.790359]  ? __schedule+0x10cc/0x2b60
[   23.790436]  ? __pfx_read_tsc+0x10/0x10
[   23.790458]  ? ktime_get_ts64+0x86/0x230
[   23.790483]  kunit_try_run_case+0x1a5/0x480
[   23.790509]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.790532]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   23.790553]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   23.790577]  ? __kthread_parkme+0x82/0x180
[   23.790596]  ? preempt_count_sub+0x50/0x80
[   23.790620]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.790643]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.790665]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   23.790688]  kthread+0x337/0x6f0
[   23.790706]  ? trace_preempt_on+0x20/0xc0
[   23.790728]  ? __pfx_kthread+0x10/0x10
[   23.790746]  ? _raw_spin_unlock_irq+0x47/0x80
[   23.790768]  ? calculate_sigpending+0x7b/0xa0
[   23.790791]  ? __pfx_kthread+0x10/0x10
[   23.790843]  ret_from_fork+0x116/0x1d0
[   23.790862]  ? __pfx_kthread+0x10/0x10
[   23.790882]  ret_from_fork_asm+0x1a/0x30
[   23.790911]  </TASK>
[   23.790921] 
[   23.798884] Allocated by task 288:
[   23.799031]  kasan_save_stack+0x45/0x70
[   23.799236]  kasan_save_track+0x18/0x40
[   23.799427]  kasan_save_alloc_info+0x3b/0x50
[   23.799628]  __kasan_kmalloc+0xb7/0xc0
[   23.799790]  __kmalloc_cache_noprof+0x189/0x420
[   23.799983]  kasan_strings+0xc0/0xe80
[   23.800184]  kunit_try_run_case+0x1a5/0x480
[   23.800345]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.800513]  kthread+0x337/0x6f0
[   23.800626]  ret_from_fork+0x116/0x1d0
[   23.800794]  ret_from_fork_asm+0x1a/0x30
[   23.800988] 
[   23.801408] Freed by task 288:
[   23.801646]  kasan_save_stack+0x45/0x70
[   23.801903]  kasan_save_track+0x18/0x40
[   23.802114]  kasan_save_free_info+0x3f/0x60
[   23.802259]  __kasan_slab_free+0x56/0x70
[   23.802385]  kfree+0x222/0x3f0
[   23.802495]  kasan_strings+0x2aa/0xe80
[   23.802618]  kunit_try_run_case+0x1a5/0x480
[   23.802782]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.803090]  kthread+0x337/0x6f0
[   23.803254]  ret_from_fork+0x116/0x1d0
[   23.803478]  ret_from_fork_asm+0x1a/0x30
[   23.803669] 
[   23.803759] The buggy address belongs to the object at ffff888102596f80
[   23.803759]  which belongs to the cache kmalloc-32 of size 32
[   23.804347] The buggy address is located 16 bytes inside of
[   23.804347]  freed 32-byte region [ffff888102596f80, ffff888102596fa0)
[   23.804795] 
[   23.804957] The buggy address belongs to the physical page:
[   23.805125] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102596
[   23.805654] flags: 0x200000000000000(node=0|zone=2)
[   23.805919] page_type: f5(slab)
[   23.806094] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   23.806353] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000
[   23.806569] page dumped because: kasan: bad access detected
[   23.806727] 
[   23.807230] Memory state around the buggy address:
[   23.807463]  ffff888102596e80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   23.807806]  ffff888102596f00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   23.808025] >ffff888102596f80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   23.808767]                          ^
[   23.809043]  ffff888102597000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   23.809316]  ffff888102597080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   23.809538] ==================================================================