[   23.896511] ==================================================================
[   23.896869] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0
[   23.897606] Read of size 1 at addr ffff8881023cba90 by task kunit_try_catch/288
[   23.898065] 
[   23.898221] CPU: 0 UID: 0 PID: 288 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc3-next-20250623 #1 PREEMPT(voluntary) 
[   23.898309] Tainted: [B]=BAD_PAGE, [N]=TEST
[   23.898324] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   23.898347] Call Trace:
[   23.898361]  <TASK>
[   23.898393]  dump_stack_lvl+0x73/0xb0
[   23.898445]  print_report+0xd1/0x650
[   23.898482]  ? __virt_addr_valid+0x1db/0x2d0
[   23.898524]  ? strlen+0x8f/0xb0
[   23.898563]  ? kasan_complete_mode_report_info+0x64/0x200
[   23.898610]  ? strlen+0x8f/0xb0
[   23.898653]  kasan_report+0x141/0x180
[   23.898696]  ? strlen+0x8f/0xb0
[   23.898747]  __asan_report_load1_noabort+0x18/0x20
[   23.898790]  strlen+0x8f/0xb0
[   23.898829]  kasan_strings+0x57b/0xe80
[   23.898910]  ? trace_hardirqs_on+0x37/0xe0
[   23.898950]  ? __pfx_kasan_strings+0x10/0x10
[   23.898986]  ? finish_task_switch.isra.0+0x153/0x700
[   23.899050]  ? __switch_to+0x47/0xf50
[   23.899096]  ? __schedule+0x10cc/0x2b60
[   23.899129]  ? __pfx_read_tsc+0x10/0x10
[   23.899166]  ? ktime_get_ts64+0x86/0x230
[   23.899209]  kunit_try_run_case+0x1a5/0x480
[   23.899254]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.899295]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   23.899365]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   23.899421]  ? __kthread_parkme+0x82/0x180
[   23.899458]  ? preempt_count_sub+0x50/0x80
[   23.899487]  ? __pfx_kunit_try_run_case+0x10/0x10
[   23.899510]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.899531]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   23.899551]  kthread+0x337/0x6f0
[   23.899568]  ? trace_preempt_on+0x20/0xc0
[   23.899587]  ? __pfx_kthread+0x10/0x10
[   23.899605]  ? _raw_spin_unlock_irq+0x47/0x80
[   23.899623]  ? calculate_sigpending+0x7b/0xa0
[   23.899644]  ? __pfx_kthread+0x10/0x10
[   23.899662]  ret_from_fork+0x116/0x1d0
[   23.899678]  ? __pfx_kthread+0x10/0x10
[   23.899695]  ret_from_fork_asm+0x1a/0x30
[   23.899723]  </TASK>
[   23.899733] 
[   23.909414] Allocated by task 288:
[   23.909695]  kasan_save_stack+0x45/0x70
[   23.910042]  kasan_save_track+0x18/0x40
[   23.910294]  kasan_save_alloc_info+0x3b/0x50
[   23.910586]  __kasan_kmalloc+0xb7/0xc0
[   23.910835]  __kmalloc_cache_noprof+0x189/0x420
[   23.911034]  kasan_strings+0xc0/0xe80
[   23.911301]  kunit_try_run_case+0x1a5/0x480
[   23.911566]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.911859]  kthread+0x337/0x6f0
[   23.912076]  ret_from_fork+0x116/0x1d0
[   23.912333]  ret_from_fork_asm+0x1a/0x30
[   23.912496] 
[   23.912579] Freed by task 288:
[   23.912699]  kasan_save_stack+0x45/0x70
[   23.912842]  kasan_save_track+0x18/0x40
[   23.913136]  kasan_save_free_info+0x3f/0x60
[   23.913453]  __kasan_slab_free+0x56/0x70
[   23.913746]  kfree+0x222/0x3f0
[   23.914042]  kasan_strings+0x2aa/0xe80
[   23.914333]  kunit_try_run_case+0x1a5/0x480
[   23.914586]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   23.914771]  kthread+0x337/0x6f0
[   23.914897]  ret_from_fork+0x116/0x1d0
[   23.915125]  ret_from_fork_asm+0x1a/0x30
[   23.915495] 
[   23.915646] The buggy address belongs to the object at ffff8881023cba80
[   23.915646]  which belongs to the cache kmalloc-32 of size 32
[   23.916495] The buggy address is located 16 bytes inside of
[   23.916495]  freed 32-byte region [ffff8881023cba80, ffff8881023cbaa0)
[   23.916864] 
[   23.917007] The buggy address belongs to the physical page:
[   23.917413] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1023cb
[   23.917936] flags: 0x200000000000000(node=0|zone=2)
[   23.918139] page_type: f5(slab)
[   23.918280] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   23.918525] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   23.918849] page dumped because: kasan: bad access detected
[   23.919212] 
[   23.919369] Memory state around the buggy address:
[   23.919859]  ffff8881023cb980: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   23.920361]  ffff8881023cba00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   23.920646] >ffff8881023cba80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   23.921165]                          ^
[   23.921309]  ffff8881023cbb00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   23.921533]  ffff8881023cbb80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   23.922043] ==================================================================