[   16.208067] ==================================================================
[   16.209652] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0
[   16.209909] Read of size 1 at addr ffff888102b6e290 by task kunit_try_catch/277
[   16.210055] 
[   16.210133] CPU: 0 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250515 #1 PREEMPT(voluntary) 
[   16.210189] Tainted: [B]=BAD_PAGE, [N]=TEST
[   16.210202] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   16.210243] Call Trace:
[   16.210261]  <TASK>
[   16.210282]  dump_stack_lvl+0x73/0xb0
[   16.210310]  print_report+0xd1/0x650
[   16.210349]  ? __virt_addr_valid+0x1db/0x2d0
[   16.210381]  ? strcmp+0xb0/0xc0
[   16.210403]  ? kasan_complete_mode_report_info+0x64/0x200
[   16.210429]  ? strcmp+0xb0/0xc0
[   16.210451]  kasan_report+0x141/0x180
[   16.210475]  ? strcmp+0xb0/0xc0
[   16.210501]  __asan_report_load1_noabort+0x18/0x20
[   16.210523]  strcmp+0xb0/0xc0
[   16.210546]  kasan_strings+0x431/0xe80
[   16.210568]  ? trace_hardirqs_on+0x37/0xe0
[   16.210593]  ? __pfx_kasan_strings+0x10/0x10
[   16.210615]  ? finish_task_switch.isra.0+0x153/0x700
[   16.210639]  ? __switch_to+0x47/0xf50
[   16.210666]  ? __schedule+0x10cc/0x2b60
[   16.210690]  ? __pfx_read_tsc+0x10/0x10
[   16.210712]  ? ktime_get_ts64+0x86/0x230
[   16.210737]  kunit_try_run_case+0x1a5/0x480
[   16.210763]  ? __pfx_kunit_try_run_case+0x10/0x10
[   16.210785]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   16.210809]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   16.210833]  ? __kthread_parkme+0x82/0x180
[   16.210855]  ? preempt_count_sub+0x50/0x80
[   16.210878]  ? __pfx_kunit_try_run_case+0x10/0x10
[   16.210902]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   16.210927]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   16.210950]  kthread+0x337/0x6f0
[   16.210970]  ? trace_preempt_on+0x20/0xc0
[   16.210993]  ? __pfx_kthread+0x10/0x10
[   16.211015]  ? _raw_spin_unlock_irq+0x47/0x80
[   16.211035]  ? calculate_sigpending+0x7b/0xa0
[   16.211061]  ? __pfx_kthread+0x10/0x10
[   16.211083]  ret_from_fork+0x116/0x1d0
[   16.211102]  ? __pfx_kthread+0x10/0x10
[   16.211123]  ret_from_fork_asm+0x1a/0x30
[   16.211157]  </TASK>
[   16.211170] 
[   16.224345] Allocated by task 277:
[   16.225079]  kasan_save_stack+0x45/0x70
[   16.225442]  kasan_save_track+0x18/0x40
[   16.225775]  kasan_save_alloc_info+0x3b/0x50
[   16.226065]  __kasan_kmalloc+0xb7/0xc0
[   16.226251]  __kmalloc_cache_noprof+0x189/0x420
[   16.226604]  kasan_strings+0xc0/0xe80
[   16.226903]  kunit_try_run_case+0x1a5/0x480
[   16.227440]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   16.227843]  kthread+0x337/0x6f0
[   16.228123]  ret_from_fork+0x116/0x1d0
[   16.228429]  ret_from_fork_asm+0x1a/0x30
[   16.228918] 
[   16.229128] Freed by task 277:
[   16.229349]  kasan_save_stack+0x45/0x70
[   16.229850]  kasan_save_track+0x18/0x40
[   16.230059]  kasan_save_free_info+0x3f/0x60
[   16.230435]  __kasan_slab_free+0x56/0x70
[   16.231235]  kfree+0x222/0x3f0
[   16.231604]  kasan_strings+0x2aa/0xe80
[   16.231952]  kunit_try_run_case+0x1a5/0x480
[   16.232196]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   16.232776]  kthread+0x337/0x6f0
[   16.232942]  ret_from_fork+0x116/0x1d0
[   16.233191]  ret_from_fork_asm+0x1a/0x30
[   16.233384] 
[   16.233671] The buggy address belongs to the object at ffff888102b6e280
[   16.233671]  which belongs to the cache kmalloc-32 of size 32
[   16.234098] The buggy address is located 16 bytes inside of
[   16.234098]  freed 32-byte region [ffff888102b6e280, ffff888102b6e2a0)
[   16.235060] 
[   16.235260] The buggy address belongs to the physical page:
[   16.235496] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b6e
[   16.236193] flags: 0x200000000000000(node=0|zone=2)
[   16.236481] page_type: f5(slab)
[   16.236769] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   16.237076] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   16.237575] page dumped because: kasan: bad access detected
[   16.237784] 
[   16.237945] Memory state around the buggy address:
[   16.238899]  ffff888102b6e180: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   16.239429]  ffff888102b6e200: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   16.239912] >ffff888102b6e280: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   16.240396]                          ^
[   16.240846]  ffff888102b6e300: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   16.241177]  ffff888102b6e380: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   16.241745] ==================================================================