[   14.778990] ==================================================================
[   14.780036] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380
[   14.780248] Read of size 1 at addr ffff888101c8f640 by task kunit_try_catch/235
[   14.780479] 
[   14.780654] CPU: 1 UID: 0 PID: 235 Comm: kunit_try_catch Tainted: G    B            N  6.15.2-rc1 #1 PREEMPT(voluntary) 
[   14.780717] Tainted: [B]=BAD_PAGE, [N]=TEST
[   14.780733] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   14.780758] Call Trace:
[   14.780837]  <TASK>
[   14.780862]  dump_stack_lvl+0x73/0xb0
[   14.780898]  print_report+0xd1/0x650
[   14.780922]  ? __virt_addr_valid+0x1db/0x2d0
[   14.780949]  ? kmem_cache_double_destroy+0x1bf/0x380
[   14.780971]  ? kasan_complete_mode_report_info+0x64/0x200
[   14.780994]  ? kmem_cache_double_destroy+0x1bf/0x380
[   14.781018]  kasan_report+0x141/0x180
[   14.781041]  ? kmem_cache_double_destroy+0x1bf/0x380
[   14.781067]  ? kmem_cache_double_destroy+0x1bf/0x380
[   14.781090]  __kasan_check_byte+0x3d/0x50
[   14.781113]  kmem_cache_destroy+0x25/0x1d0
[   14.781229]  kmem_cache_double_destroy+0x1bf/0x380
[   14.781286]  ? __pfx_kmem_cache_double_destroy+0x10/0x10
[   14.781312]  ? finish_task_switch.isra.0+0x153/0x700
[   14.781345]  ? __switch_to+0x5d9/0xf60
[   14.781371]  ? dequeue_task_fair+0x166/0x4e0
[   14.781401]  ? __pfx_read_tsc+0x10/0x10
[   14.781425]  ? ktime_get_ts64+0x86/0x230
[   14.781456]  kunit_try_run_case+0x1a5/0x480
[   14.781486]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.781508]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   14.781535]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   14.781571]  ? __kthread_parkme+0x82/0x180
[   14.781608]  ? preempt_count_sub+0x50/0x80
[   14.781636]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.781661]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.781686]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   14.781712]  kthread+0x337/0x6f0
[   14.781731]  ? trace_preempt_on+0x20/0xc0
[   14.781757]  ? __pfx_kthread+0x10/0x10
[   14.781831]  ? _raw_spin_unlock_irq+0x47/0x80
[   14.781859]  ? calculate_sigpending+0x7b/0xa0
[   14.781886]  ? __pfx_kthread+0x10/0x10
[   14.781908]  ret_from_fork+0x41/0x80
[   14.781933]  ? __pfx_kthread+0x10/0x10
[   14.781952]  ret_from_fork_asm+0x1a/0x30
[   14.781986]  </TASK>
[   14.781999] 
[   14.790888] Allocated by task 235:
[   14.791343]  kasan_save_stack+0x45/0x70
[   14.791487]  kasan_save_track+0x18/0x40
[   14.792081]  kasan_save_alloc_info+0x3b/0x50
[   14.792280]  __kasan_slab_alloc+0x91/0xa0
[   14.792397]  kmem_cache_alloc_noprof+0x123/0x3f0
[   14.792514]  __kmem_cache_create_args+0x169/0x240
[   14.792678]  kmem_cache_double_destroy+0xd5/0x380
[   14.792800]  kunit_try_run_case+0x1a5/0x480
[   14.792928]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.793058]  kthread+0x337/0x6f0
[   14.793167]  ret_from_fork+0x41/0x80
[   14.793275]  ret_from_fork_asm+0x1a/0x30
[   14.793380] 
[   14.793438] Freed by task 235:
[   14.793543]  kasan_save_stack+0x45/0x70
[   14.794676]  kasan_save_track+0x18/0x40
[   14.794917]  kasan_save_free_info+0x3f/0x60
[   14.795047]  __kasan_slab_free+0x56/0x70
[   14.795210]  kmem_cache_free+0x249/0x420
[   14.795484]  slab_kmem_cache_release+0x2e/0x40
[   14.796114]  kmem_cache_release+0x16/0x20
[   14.796442]  kobject_put+0x181/0x450
[   14.796705]  sysfs_slab_release+0x16/0x20
[   14.796803]  kmem_cache_destroy+0xf0/0x1d0
[   14.796896]  kmem_cache_double_destroy+0x14e/0x380
[   14.796997]  kunit_try_run_case+0x1a5/0x480
[   14.797446]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.797575]  kthread+0x337/0x6f0
[   14.797859]  ret_from_fork+0x41/0x80
[   14.798064]  ret_from_fork_asm+0x1a/0x30
[   14.798170] 
[   14.798235] The buggy address belongs to the object at ffff888101c8f640
[   14.798235]  which belongs to the cache kmem_cache of size 208
[   14.798492] The buggy address is located 0 bytes inside of
[   14.798492]  freed 208-byte region [ffff888101c8f640, ffff888101c8f710)
[   14.799022] 
[   14.799247] The buggy address belongs to the physical page:
[   14.800018] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101c8f
[   14.800464] flags: 0x200000000000000(node=0|zone=2)
[   14.800594] page_type: f5(slab)
[   14.801095] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000
[   14.801254] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000
[   14.801508] page dumped because: kasan: bad access detected
[   14.801972] 
[   14.802206] Memory state around the buggy address:
[   14.802379]  ffff888101c8f500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   14.802575]  ffff888101c8f580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc
[   14.803072] >ffff888101c8f600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[   14.803249]                                            ^
[   14.803414]  ffff888101c8f680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   14.803617]  ffff888101c8f700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   14.804071] ==================================================================