[   27.552543] ==================================================================
[   27.554745] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0
[   27.555036] Read of size 1 at addr ffff88810618c690 by task kunit_try_catch/308
[   27.555332] 
[   27.555485] CPU: 0 UID: 0 PID: 308 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) 
[   27.555535] Tainted: [B]=BAD_PAGE, [N]=TEST
[   27.555547] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   27.555567] Call Trace:
[   27.555580]  <TASK>
[   27.555596]  dump_stack_lvl+0x73/0xb0
[   27.555624]  print_report+0xd1/0x610
[   27.555645]  ? __virt_addr_valid+0x1db/0x2d0
[   27.555669]  ? strcmp+0xb0/0xc0
[   27.555685]  ? kasan_complete_mode_report_info+0x64/0x200
[   27.555711]  ? strcmp+0xb0/0xc0
[   27.555728]  kasan_report+0x141/0x180
[   27.555749]  ? strcmp+0xb0/0xc0
[   27.555771]  __asan_report_load1_noabort+0x18/0x20
[   27.555794]  strcmp+0xb0/0xc0
[   27.555813]  kasan_strings+0x431/0xe80
[   27.555831]  ? trace_hardirqs_on+0x37/0xe0
[   27.555854]  ? __pfx_kasan_strings+0x10/0x10
[   27.555874]  ? finish_task_switch.isra.0+0x153/0x700
[   27.555894]  ? __switch_to+0x47/0xf80
[   27.555920]  ? __schedule+0x10c6/0x2b60
[   27.555942]  ? __pfx_read_tsc+0x10/0x10
[   27.555962]  ? ktime_get_ts64+0x86/0x230
[   27.555986]  kunit_try_run_case+0x1a5/0x480
[   27.556009]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.556030]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   27.556052]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   27.556074]  ? __kthread_parkme+0x82/0x180
[   27.556110]  ? preempt_count_sub+0x50/0x80
[   27.556132]  ? __pfx_kunit_try_run_case+0x10/0x10
[   27.556155]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.556177]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   27.556200]  kthread+0x337/0x6f0
[   27.556219]  ? trace_preempt_on+0x20/0xc0
[   27.556241]  ? __pfx_kthread+0x10/0x10
[   27.556261]  ? _raw_spin_unlock_irq+0x47/0x80
[   27.556282]  ? calculate_sigpending+0x7b/0xa0
[   27.556304]  ? __pfx_kthread+0x10/0x10
[   27.556325]  ret_from_fork+0x116/0x1d0
[   27.556343]  ? __pfx_kthread+0x10/0x10
[   27.556379]  ret_from_fork_asm+0x1a/0x30
[   27.556410]  </TASK>
[   27.556419] 
[   27.562959] Allocated by task 308:
[   27.563118]  kasan_save_stack+0x45/0x70
[   27.563395]  kasan_save_track+0x18/0x40
[   27.563588]  kasan_save_alloc_info+0x3b/0x50
[   27.563795]  __kasan_kmalloc+0xb7/0xc0
[   27.563976]  __kmalloc_cache_noprof+0x189/0x420
[   27.564203]  kasan_strings+0xc0/0xe80
[   27.564615]  kunit_try_run_case+0x1a5/0x480
[   27.564820]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.565013]  kthread+0x337/0x6f0
[   27.565149]  ret_from_fork+0x116/0x1d0
[   27.565386]  ret_from_fork_asm+0x1a/0x30
[   27.565588] 
[   27.565674] Freed by task 308:
[   27.565812]  kasan_save_stack+0x45/0x70
[   27.565946]  kasan_save_track+0x18/0x40
[   27.566140]  kasan_save_free_info+0x3f/0x60
[   27.566509]  __kasan_slab_free+0x56/0x70
[   27.566687]  kfree+0x222/0x3f0
[   27.566806]  kasan_strings+0x2aa/0xe80
[   27.566969]  kunit_try_run_case+0x1a5/0x480
[   27.567189]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   27.567496]  kthread+0x337/0x6f0
[   27.567649]  ret_from_fork+0x116/0x1d0
[   27.567823]  ret_from_fork_asm+0x1a/0x30
[   27.567978] 
[   27.568041] The buggy address belongs to the object at ffff88810618c680
[   27.568041]  which belongs to the cache kmalloc-32 of size 32
[   27.568384] The buggy address is located 16 bytes inside of
[   27.568384]  freed 32-byte region [ffff88810618c680, ffff88810618c6a0)
[   27.568707] 
[   27.568769] The buggy address belongs to the physical page:
[   27.568972] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10618c
[   27.569428] flags: 0x200000000000000(node=0|zone=2)
[   27.569926] page_type: f5(slab)
[   27.570095] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   27.570504] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   27.570719] page dumped because: kasan: bad access detected
[   27.570877] 
[   27.570937] Memory state around the buggy address:
[   27.571086]  ffff88810618c580: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   27.571286]  ffff88810618c600: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   27.571816] >ffff88810618c680: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.572138]                          ^
[   27.572472]  ffff88810618c700: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   27.572807]  ffff88810618c780: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   27.573133] ==================================================================