[   27.089525] ==================================================================
[   27.089948] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   27.090166] Read of size 1 at addr ffff8881060c6b10 by task kunit_try_catch/307
[   27.090480] 
[   27.090611] CPU: 1 UID: 0 PID: 307 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5-next-20250710 #1 PREEMPT(voluntary) 
[   27.090661] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.090673] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   27.090706] Call Trace:
[   27.090724]  <TASK>
[   27.090741]  dump_stack_lvl+0x73/0xb0
[   27.090836]  print_report+0xd1/0x610
[   27.090861]  ? __virt_addr_valid+0x1db/0x2d0
[   27.090886]  ? kasan_strings+0xcbc/0xe80
[   27.090908]  ? kasan_complete_mode_report_info+0x64/0x200
[   27.090934]  ? kasan_strings+0xcbc/0xe80
[   27.090956]  kasan_report+0x141/0x180
[   27.090978]  ? kasan_strings+0xcbc/0xe80
[   27.091003]  __asan_report_load1_noabort+0x18/0x20
[   27.091028]  kasan_strings+0xcbc/0xe80
[   27.091047]  ? trace_hardirqs_on+0x37/0xe0
[   27.091071]  ? __pfx_kasan_strings+0x10/0x10
[   27.091092]  ? finish_task_switch.isra.0+0x153/0x700
[   27.091113]  ? __switch_to+0x47/0xf80
[   27.091139]  ? __schedule+0x10cc/0x2b60
[   27.091162]  ? __pfx_read_tsc+0x10/0x10
[   27.091183]  ? ktime_get_ts64+0x86/0x230
[   27.091207]  kunit_try_run_case+0x1a5/0x480
[   27.091230]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.091251]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   27.091273]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   27.091297]  ? __kthread_parkme+0x82/0x180
[   27.091317]  ? preempt_count_sub+0x50/0x80
[   27.091340]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.091362]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.091387]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   27.091412]  kthread+0x337/0x6f0
[   27.091432]  ? trace_preempt_on+0x20/0xc0
[   27.091454]  ? __pfx_kthread+0x10/0x10
[   27.091475]  ? _raw_spin_unlock_irq+0x47/0x80
[   27.091497]  ? calculate_sigpending+0x7b/0xa0
[   27.091538]  ? __pfx_kthread+0x10/0x10
[   27.091560]  ret_from_fork+0x116/0x1d0
[   27.091579]  ? __pfx_kthread+0x10/0x10
[   27.091599]  ret_from_fork_asm+0x1a/0x30
[   27.091630]  </TASK>
[   27.091642] 
[   27.099328] Allocated by task 307:
[   27.099458]  kasan_save_stack+0x45/0x70
[   27.099688]  kasan_save_track+0x18/0x40
[   27.099946]  kasan_save_alloc_info+0x3b/0x50
[   27.100130]  __kasan_kmalloc+0xb7/0xc0
[   27.100315]  __kmalloc_cache_noprof+0x189/0x420
[   27.100503]  kasan_strings+0xc0/0xe80
[   27.100668]  kunit_try_run_case+0x1a5/0x480
[   27.101035]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.101301]  kthread+0x337/0x6f0
[   27.101469]  ret_from_fork+0x116/0x1d0
[   27.101679]  ret_from_fork_asm+0x1a/0x30
[   27.101942] 
[   27.102014] Freed by task 307:
[   27.102147]  kasan_save_stack+0x45/0x70
[   27.102341]  kasan_save_track+0x18/0x40
[   27.102556]  kasan_save_free_info+0x3f/0x60
[   27.102748]  __kasan_slab_free+0x56/0x70
[   27.102989]  kfree+0x222/0x3f0
[   27.103103]  kasan_strings+0x2aa/0xe80
[   27.103231]  kunit_try_run_case+0x1a5/0x480
[   27.103371]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.103572]  kthread+0x337/0x6f0
[   27.103743]  ret_from_fork+0x116/0x1d0
[   27.104003]  ret_from_fork_asm+0x1a/0x30
[   27.104199] 
[   27.104289] The buggy address belongs to the object at ffff8881060c6b00
[   27.104289]  which belongs to the cache kmalloc-32 of size 32
[   27.105015] The buggy address is located 16 bytes inside of
[   27.105015]  freed 32-byte region [ffff8881060c6b00, ffff8881060c6b20)
[   27.105404] 
[   27.105474] The buggy address belongs to the physical page:
[   27.105751] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1060c6
[   27.106109] flags: 0x200000000000000(node=0|zone=2)
[   27.106341] page_type: f5(slab)
[   27.106502] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   27.106916] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   27.107224] page dumped because: kasan: bad access detected
[   27.107440] 
[   27.107551] Memory state around the buggy address:
[   27.107745]  ffff8881060c6a00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.108080]  ffff8881060c6a80: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   27.108369] >ffff8881060c6b00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.108678]                          ^
[   27.109013]  ffff8881060c6b80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   27.109308]  ffff8881060c6c00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.109585] ==================================================================