[   13.494616] ==================================================================
[   13.496605] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380
[   13.497858] Read of size 1 at addr ffff8881020d6500 by task kunit_try_catch/234
[   13.498398] 
[   13.498728] CPU: 1 UID: 0 PID: 234 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc7 #1 PREEMPT(voluntary) 
[   13.498784] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.498798] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.498820] Call Trace:
[   13.498833]  <TASK>
[   13.498853]  dump_stack_lvl+0x73/0xb0
[   13.499011]  print_report+0xd1/0x650
[   13.499035]  ? __virt_addr_valid+0x1db/0x2d0
[   13.499059]  ? kmem_cache_double_destroy+0x1bf/0x380
[   13.499079]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.499102]  ? kmem_cache_double_destroy+0x1bf/0x380
[   13.499160]  kasan_report+0x141/0x180
[   13.499184]  ? kmem_cache_double_destroy+0x1bf/0x380
[   13.499208]  ? kmem_cache_double_destroy+0x1bf/0x380
[   13.499229]  __kasan_check_byte+0x3d/0x50
[   13.499251]  kmem_cache_destroy+0x25/0x1d0
[   13.499276]  kmem_cache_double_destroy+0x1bf/0x380
[   13.499307]  ? __pfx_kmem_cache_double_destroy+0x10/0x10
[   13.499328]  ? finish_task_switch.isra.0+0x153/0x700
[   13.499353]  ? __switch_to+0x5d9/0xf60
[   13.499373]  ? dequeue_task_fair+0x166/0x4e0
[   13.499401]  ? __pfx_read_tsc+0x10/0x10
[   13.499441]  ? ktime_get_ts64+0x86/0x230
[   13.499469]  kunit_try_run_case+0x1a5/0x480
[   13.499494]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.499516]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.499540]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.499563]  ? __kthread_parkme+0x82/0x180
[   13.499586]  ? preempt_count_sub+0x50/0x80
[   13.499609]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.499633]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.499655]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.499677]  kthread+0x337/0x6f0
[   13.499694]  ? trace_preempt_on+0x20/0xc0
[   13.499719]  ? __pfx_kthread+0x10/0x10
[   13.499737]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.499756]  ? calculate_sigpending+0x7b/0xa0
[   13.499779]  ? __pfx_kthread+0x10/0x10
[   13.499797]  ret_from_fork+0x41/0x80
[   13.499818]  ? __pfx_kthread+0x10/0x10
[   13.499836]  ret_from_fork_asm+0x1a/0x30
[   13.499884]  </TASK>
[   13.499897] 
[   13.516435] Allocated by task 234:
[   13.517057]  kasan_save_stack+0x45/0x70
[   13.517600]  kasan_save_track+0x18/0x40
[   13.518243]  kasan_save_alloc_info+0x3b/0x50
[   13.518876]  __kasan_slab_alloc+0x91/0xa0
[   13.519578]  kmem_cache_alloc_noprof+0x123/0x3f0
[   13.520083]  __kmem_cache_create_args+0x169/0x240
[   13.520412]  kmem_cache_double_destroy+0xd5/0x380
[   13.520894]  kunit_try_run_case+0x1a5/0x480
[   13.521506]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.522134]  kthread+0x337/0x6f0
[   13.522279]  ret_from_fork+0x41/0x80
[   13.522424]  ret_from_fork_asm+0x1a/0x30
[   13.522565] 
[   13.522637] Freed by task 234:
[   13.522759]  kasan_save_stack+0x45/0x70
[   13.523236]  kasan_save_track+0x18/0x40
[   13.523464]  kasan_save_free_info+0x3f/0x60
[   13.524080]  __kasan_slab_free+0x56/0x70
[   13.524594]  kmem_cache_free+0x249/0x420
[   13.524912]  slab_kmem_cache_release+0x2e/0x40
[   13.525578]  kmem_cache_release+0x16/0x20
[   13.525776]  kobject_put+0x181/0x450
[   13.526129]  sysfs_slab_release+0x16/0x20
[   13.526752]  kmem_cache_destroy+0xf0/0x1d0
[   13.527304]  kmem_cache_double_destroy+0x14e/0x380
[   13.527663]  kunit_try_run_case+0x1a5/0x480
[   13.527822]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.528410]  kthread+0x337/0x6f0
[   13.528858]  ret_from_fork+0x41/0x80
[   13.529500]  ret_from_fork_asm+0x1a/0x30
[   13.530040] 
[   13.530122] The buggy address belongs to the object at ffff8881020d6500
[   13.530122]  which belongs to the cache kmem_cache of size 208
[   13.530499] The buggy address is located 0 bytes inside of
[   13.530499]  freed 208-byte region [ffff8881020d6500, ffff8881020d65d0)
[   13.531583] 
[   13.531755] The buggy address belongs to the physical page:
[   13.532349] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1020d6
[   13.532912] flags: 0x200000000000000(node=0|zone=2)
[   13.533082] page_type: f5(slab)
[   13.533207] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000
[   13.533546] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000
[   13.534408] page dumped because: kasan: bad access detected
[   13.534997] 
[   13.535172] Memory state around the buggy address:
[   13.535669]  ffff8881020d6400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   13.536448]  ffff8881020d6480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.536856] >ffff8881020d6500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   13.537543]                    ^
[   13.537666]  ffff8881020d6580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc
[   13.537932]  ffff8881020d6600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.538600] ==================================================================