[   12.104772] ==================================================================
[   12.106280] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480
[   12.106779] Free of addr ffff888103342000 by task kunit_try_catch/227
[   12.106985] 
[   12.107077] CPU: 1 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   12.107140] Tainted: [B]=BAD_PAGE, [N]=TEST
[   12.107151] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   12.107172] Call Trace:
[   12.107187]  <TASK>
[   12.107234]  dump_stack_lvl+0x73/0xb0
[   12.107262]  print_report+0xd1/0x650
[   12.107284]  ? __virt_addr_valid+0x1db/0x2d0
[   12.107325]  ? kasan_complete_mode_report_info+0x64/0x200
[   12.107347]  ? kmem_cache_double_free+0x1e5/0x480
[   12.107371]  kasan_report_invalid_free+0x10a/0x130
[   12.107395]  ? kmem_cache_double_free+0x1e5/0x480
[   12.107419]  ? kmem_cache_double_free+0x1e5/0x480
[   12.107442]  check_slab_allocation+0x101/0x130
[   12.107463]  __kasan_slab_pre_free+0x28/0x40
[   12.107483]  kmem_cache_free+0xed/0x420
[   12.107502]  ? kmem_cache_alloc_noprof+0x123/0x3f0
[   12.107522]  ? kmem_cache_double_free+0x1e5/0x480
[   12.107547]  kmem_cache_double_free+0x1e5/0x480
[   12.107570]  ? __pfx_kmem_cache_double_free+0x10/0x10
[   12.107592]  ? finish_task_switch.isra.0+0x153/0x700
[   12.107613]  ? __switch_to+0x47/0xf50
[   12.107640]  ? __pfx_read_tsc+0x10/0x10
[   12.107660]  ? ktime_get_ts64+0x86/0x230
[   12.107683]  kunit_try_run_case+0x1a5/0x480
[   12.107705]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.107726]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   12.107748]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   12.107770]  ? __kthread_parkme+0x82/0x180
[   12.107790]  ? preempt_count_sub+0x50/0x80
[   12.107812]  ? __pfx_kunit_try_run_case+0x10/0x10
[   12.107835]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.107856]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   12.107877]  kthread+0x337/0x6f0
[   12.107896]  ? trace_preempt_on+0x20/0xc0
[   12.107919]  ? __pfx_kthread+0x10/0x10
[   12.107938]  ? _raw_spin_unlock_irq+0x47/0x80
[   12.107957]  ? calculate_sigpending+0x7b/0xa0
[   12.107980]  ? __pfx_kthread+0x10/0x10
[   12.108000]  ret_from_fork+0x116/0x1d0
[   12.108017]  ? __pfx_kthread+0x10/0x10
[   12.108037]  ret_from_fork_asm+0x1a/0x30
[   12.108066]  </TASK>
[   12.108077] 
[   12.121202] Allocated by task 227:
[   12.121360]  kasan_save_stack+0x45/0x70
[   12.121575]  kasan_save_track+0x18/0x40
[   12.121766]  kasan_save_alloc_info+0x3b/0x50
[   12.121972]  __kasan_slab_alloc+0x91/0xa0
[   12.122601]  kmem_cache_alloc_noprof+0x123/0x3f0
[   12.122820]  kmem_cache_double_free+0x14f/0x480
[   12.123139]  kunit_try_run_case+0x1a5/0x480
[   12.123522]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.123837]  kthread+0x337/0x6f0
[   12.123964]  ret_from_fork+0x116/0x1d0
[   12.124162]  ret_from_fork_asm+0x1a/0x30
[   12.124390] 
[   12.124878] Freed by task 227:
[   12.125036]  kasan_save_stack+0x45/0x70
[   12.125226]  kasan_save_track+0x18/0x40
[   12.125577]  kasan_save_free_info+0x3f/0x60
[   12.125774]  __kasan_slab_free+0x56/0x70
[   12.125965]  kmem_cache_free+0x249/0x420
[   12.126224]  kmem_cache_double_free+0x16a/0x480
[   12.126810]  kunit_try_run_case+0x1a5/0x480
[   12.127028]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   12.127388]  kthread+0x337/0x6f0
[   12.127567]  ret_from_fork+0x116/0x1d0
[   12.127751]  ret_from_fork_asm+0x1a/0x30
[   12.127946] 
[   12.128036] The buggy address belongs to the object at ffff888103342000
[   12.128036]  which belongs to the cache test_cache of size 200
[   12.129323] The buggy address is located 0 bytes inside of
[   12.129323]  200-byte region [ffff888103342000, ffff8881033420c8)
[   12.129939] 
[   12.130159] The buggy address belongs to the physical page:
[   12.130578] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103342
[   12.130900] flags: 0x200000000000000(node=0|zone=2)
[   12.131136] page_type: f5(slab)
[   12.131384] raw: 0200000000000000 ffff888101849500 dead000000000122 0000000000000000
[   12.132051] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000
[   12.132633] page dumped because: kasan: bad access detected
[   12.132975] 
[   12.133195] Memory state around the buggy address:
[   12.133765]  ffff888103341f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.134326]  ffff888103341f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.134756] >ffff888103342000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   12.135408]                    ^
[   12.135780]  ffff888103342080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
[   12.136007]  ffff888103342100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   12.136277] ==================================================================