[   25.947209] ==================================================================
[   25.947885] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380
[   25.948160] Read of size 1 at addr ffff8881016538c0 by task kunit_try_catch/263
[   25.948391] 
[   25.948480] CPU: 0 UID: 0 PID: 263 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7-next-20250722 #1 PREEMPT(voluntary) 
[   25.948532] Tainted: [B]=BAD_PAGE, [N]=TEST
[   25.948546] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   25.948570] Call Trace:
[   25.948583]  <TASK>
[   25.948601]  dump_stack_lvl+0x73/0xb0
[   25.948633]  print_report+0xd1/0x640
[   25.948657]  ? __virt_addr_valid+0x1db/0x2d0
[   25.948684]  ? kmem_cache_double_destroy+0x1bf/0x380
[   25.948708]  ? kasan_complete_mode_report_info+0x64/0x200
[   25.948734]  ? kmem_cache_double_destroy+0x1bf/0x380
[   25.948760]  kasan_report+0x141/0x180
[   25.948782]  ? kmem_cache_double_destroy+0x1bf/0x380
[   25.948810]  ? kmem_cache_double_destroy+0x1bf/0x380
[   25.949216]  __kasan_check_byte+0x3d/0x50
[   25.949253]  kmem_cache_destroy+0x25/0x1d0
[   25.949286]  kmem_cache_double_destroy+0x1bf/0x380
[   25.949312]  ? __pfx_kmem_cache_double_destroy+0x10/0x10
[   25.949338]  ? finish_task_switch.isra.0+0x153/0x700
[   25.949362]  ? __switch_to+0x47/0xf80
[   25.949393]  ? __pfx_read_tsc+0x10/0x10
[   25.949416]  ? ktime_get_ts64+0x86/0x230
[   25.949737]  kunit_try_run_case+0x1a5/0x480
[   25.949781]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.949807]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   25.949849]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   25.949875]  ? __kthread_parkme+0x82/0x180
[   25.949897]  ? preempt_count_sub+0x50/0x80
[   25.949920]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.949944]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.949969]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   25.949994]  kthread+0x337/0x6f0
[   25.950014]  ? trace_preempt_on+0x20/0xc0
[   25.950039]  ? __pfx_kthread+0x10/0x10
[   25.950061]  ? _raw_spin_unlock_irq+0x47/0x80
[   25.950084]  ? calculate_sigpending+0x7b/0xa0
[   25.950109]  ? __pfx_kthread+0x10/0x10
[   25.950130]  ret_from_fork+0x116/0x1d0
[   25.950173]  ? __pfx_kthread+0x10/0x10
[   25.950195]  ret_from_fork_asm+0x1a/0x30
[   25.950227]  </TASK>
[   25.950239] 
[   25.961301] Allocated by task 263:
[   25.961606]  kasan_save_stack+0x45/0x70
[   25.961827]  kasan_save_track+0x18/0x40
[   25.961991]  kasan_save_alloc_info+0x3b/0x50
[   25.962266]  __kasan_slab_alloc+0x91/0xa0
[   25.962587]  kmem_cache_alloc_noprof+0x123/0x3f0
[   25.962814]  __kmem_cache_create_args+0x169/0x240
[   25.963057]  kmem_cache_double_destroy+0xd5/0x380
[   25.963321]  kunit_try_run_case+0x1a5/0x480
[   25.963641]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.963937]  kthread+0x337/0x6f0
[   25.964139]  ret_from_fork+0x116/0x1d0
[   25.964362]  ret_from_fork_asm+0x1a/0x30
[   25.964711] 
[   25.964859] Freed by task 263:
[   25.965040]  kasan_save_stack+0x45/0x70
[   25.965197]  kasan_save_track+0x18/0x40
[   25.965386]  kasan_save_free_info+0x3f/0x60
[   25.965549]  __kasan_slab_free+0x56/0x70
[   25.965724]  kmem_cache_free+0x249/0x420
[   25.966055]  slab_kmem_cache_release+0x2e/0x40
[   25.966309]  kmem_cache_release+0x16/0x20
[   25.966519]  kobject_put+0x181/0x450
[   25.966663]  sysfs_slab_release+0x16/0x20
[   25.966910]  kmem_cache_destroy+0xf0/0x1d0
[   25.967194]  kmem_cache_double_destroy+0x14e/0x380
[   25.967437]  kunit_try_run_case+0x1a5/0x480
[   25.967770]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.968060]  kthread+0x337/0x6f0
[   25.968237]  ret_from_fork+0x116/0x1d0
[   25.968644]  ret_from_fork_asm+0x1a/0x30
[   25.968848] 
[   25.968984] The buggy address belongs to the object at ffff8881016538c0
[   25.968984]  which belongs to the cache kmem_cache of size 208
[   25.969506] The buggy address is located 0 bytes inside of
[   25.969506]  freed 208-byte region [ffff8881016538c0, ffff888101653990)
[   25.970075] 
[   25.970238] The buggy address belongs to the physical page:
[   25.970508] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101653
[   25.970948] flags: 0x200000000000000(node=0|zone=2)
[   25.971219] page_type: f5(slab)
[   25.971346] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000
[   25.971843] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000
[   25.972196] page dumped because: kasan: bad access detected
[   25.972647] 
[   25.972747] Memory state around the buggy address:
[   25.972943]  ffff888101653780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.973326]  ffff888101653800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc
[   25.973624] >ffff888101653880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   25.974016]                                            ^
[   25.974310]  ffff888101653900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.974734]  ffff888101653980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.975029] ==================================================================