[   27.095553] ==================================================================
[   27.096839] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0
[   27.097379] Read of size 1 at addr ffff888105abca90 by task kunit_try_catch/308
[   27.098379] 
[   27.098641] CPU: 0 UID: 0 PID: 308 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250704 #1 PREEMPT(voluntary) 
[   27.098704] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.098721] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   27.098750] Call Trace:
[   27.098775]  <TASK>
[   27.098798]  dump_stack_lvl+0x73/0xb0
[   27.098832]  print_report+0xd1/0x650
[   27.098860]  ? __virt_addr_valid+0x1db/0x2d0
[   27.098888]  ? strlen+0x8f/0xb0
[   27.098911]  ? kasan_complete_mode_report_info+0x64/0x200
[   27.098941]  ? strlen+0x8f/0xb0
[   27.098964]  kasan_report+0x141/0x180
[   27.098989]  ? strlen+0x8f/0xb0
[   27.099017]  __asan_report_load1_noabort+0x18/0x20
[   27.099044]  strlen+0x8f/0xb0
[   27.099082]  kasan_strings+0x57b/0xe80
[   27.099105]  ? trace_hardirqs_on+0x37/0xe0
[   27.099145]  ? __pfx_kasan_strings+0x10/0x10
[   27.099169]  ? finish_task_switch.isra.0+0x153/0x700
[   27.099270]  ? __switch_to+0x47/0xf50
[   27.099307]  ? __schedule+0x10cc/0x2b60
[   27.099335]  ? __pfx_read_tsc+0x10/0x10
[   27.099360]  ? ktime_get_ts64+0x86/0x230
[   27.099401]  kunit_try_run_case+0x1a5/0x480
[   27.099433]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.099460]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   27.099488]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   27.099516]  ? __kthread_parkme+0x82/0x180
[   27.099539]  ? preempt_count_sub+0x50/0x80
[   27.099566]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.099594]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.099623]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   27.099652]  kthread+0x337/0x6f0
[   27.099675]  ? trace_preempt_on+0x20/0xc0
[   27.099700]  ? __pfx_kthread+0x10/0x10
[   27.099723]  ? _raw_spin_unlock_irq+0x47/0x80
[   27.099749]  ? calculate_sigpending+0x7b/0xa0
[   27.099776]  ? __pfx_kthread+0x10/0x10
[   27.099801]  ret_from_fork+0x116/0x1d0
[   27.099822]  ? __pfx_kthread+0x10/0x10
[   27.099846]  ret_from_fork_asm+0x1a/0x30
[   27.099882]  </TASK>
[   27.099895] 
[   27.116647] Allocated by task 308:
[   27.116953]  kasan_save_stack+0x45/0x70
[   27.117802]  kasan_save_track+0x18/0x40
[   27.118003]  kasan_save_alloc_info+0x3b/0x50
[   27.118171]  __kasan_kmalloc+0xb7/0xc0
[   27.118321]  __kmalloc_cache_noprof+0x189/0x420
[   27.118506]  kasan_strings+0xc0/0xe80
[   27.119343]  kunit_try_run_case+0x1a5/0x480
[   27.119778]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.121309]  kthread+0x337/0x6f0
[   27.121578]  ret_from_fork+0x116/0x1d0
[   27.121733]  ret_from_fork_asm+0x1a/0x30
[   27.121959] 
[   27.123035] Freed by task 308:
[   27.123442]  kasan_save_stack+0x45/0x70
[   27.123827]  kasan_save_track+0x18/0x40
[   27.124332]  kasan_save_free_info+0x3f/0x60
[   27.124811]  __kasan_slab_free+0x56/0x70
[   27.125201]  kfree+0x222/0x3f0
[   27.125325]  kasan_strings+0x2aa/0xe80
[   27.125511]  kunit_try_run_case+0x1a5/0x480
[   27.125666]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.125847]  kthread+0x337/0x6f0
[   27.125972]  ret_from_fork+0x116/0x1d0
[   27.127088]  ret_from_fork_asm+0x1a/0x30
[   27.127948] 
[   27.128137] The buggy address belongs to the object at ffff888105abca80
[   27.128137]  which belongs to the cache kmalloc-32 of size 32
[   27.130033] The buggy address is located 16 bytes inside of
[   27.130033]  freed 32-byte region [ffff888105abca80, ffff888105abcaa0)
[   27.130941] 
[   27.131136] The buggy address belongs to the physical page:
[   27.131691] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105abc
[   27.132752] flags: 0x200000000000000(node=0|zone=2)
[   27.133377] page_type: f5(slab)
[   27.133740] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   27.134093] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   27.134790] page dumped because: kasan: bad access detected
[   27.135912] 
[   27.136037] Memory state around the buggy address:
[   27.136290]  ffff888105abc980: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   27.136633]  ffff888105abca00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   27.136965] >ffff888105abca80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.137286]                          ^
[   27.138284]  ffff888105abcb00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   27.139258]  ffff888105abcb80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.140120] ==================================================================