[   18.180334] ==================================================================
[   18.181769] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x19d/0x360
[   18.182801] Read of size 1 at addr ffff888101f801e0 by task kunit_try_catch/197
[   18.183580] 
[   18.183820] CPU: 1 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G    B            N 6.12.33-rc1 #1
[   18.183935] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.183969] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   18.184026] Call Trace:
[   18.184062]  <TASK>
[   18.184111]  dump_stack_lvl+0x73/0xb0
[   18.184197]  print_report+0xd1/0x640
[   18.184319]  ? __virt_addr_valid+0x1db/0x2d0
[   18.184404]  ? kmalloc_double_kzfree+0x19d/0x360
[   18.184471]  ? kasan_complete_mode_report_info+0x64/0x200
[   18.184544]  ? kmalloc_double_kzfree+0x19d/0x360
[   18.184660]  kasan_report+0x140/0x180
[   18.184721]  ? kmalloc_double_kzfree+0x19d/0x360
[   18.184755]  ? kmalloc_double_kzfree+0x19d/0x360
[   18.184782]  __kasan_check_byte+0x3d/0x50
[   18.184843]  kfree_sensitive+0x22/0x90
[   18.184879]  kmalloc_double_kzfree+0x19d/0x360
[   18.184908]  ? __pfx_kmalloc_double_kzfree+0x10/0x10
[   18.184937]  ? __schedule+0xc49/0x27a0
[   18.184964]  ? __pfx_read_tsc+0x10/0x10
[   18.184991]  ? ktime_get_ts64+0x84/0x230
[   18.185027]  kunit_try_run_case+0x1a6/0x480
[   18.185059]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.185086]  ? _raw_spin_lock_irqsave+0xa2/0x110
[   18.185113]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   18.185147]  ? __kthread_parkme+0x82/0x160
[   18.185173]  ? preempt_count_sub+0x50/0x80
[   18.185203]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.185262]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   18.185301]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.185337]  kthread+0x257/0x310
[   18.185361]  ? __pfx_kthread+0x10/0x10
[   18.185386]  ret_from_fork+0x41/0x80
[   18.185414]  ? __pfx_kthread+0x10/0x10
[   18.185441]  ret_from_fork_asm+0x1a/0x30
[   18.185566]  </TASK>
[   18.185586] 
[   18.205373] Allocated by task 197:
[   18.205949]  kasan_save_stack+0x45/0x70
[   18.206395]  kasan_save_track+0x18/0x40
[   18.206963]  kasan_save_alloc_info+0x3b/0x50
[   18.207468]  __kasan_kmalloc+0xb7/0xc0
[   18.207960]  __kmalloc_cache_noprof+0x168/0x350
[   18.208642]  kmalloc_double_kzfree+0xaa/0x360
[   18.209192]  kunit_try_run_case+0x1a6/0x480
[   18.209704]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.210085]  kthread+0x257/0x310
[   18.210837]  ret_from_fork+0x41/0x80
[   18.211245]  ret_from_fork_asm+0x1a/0x30
[   18.212083] 
[   18.212345] Freed by task 197:
[   18.212645]  kasan_save_stack+0x45/0x70
[   18.213245]  kasan_save_track+0x18/0x40
[   18.213885]  kasan_save_free_info+0x3f/0x60
[   18.214289]  __kasan_slab_free+0x56/0x70
[   18.215025]  kfree+0x123/0x3d0
[   18.215595]  kfree_sensitive+0x67/0x90
[   18.216023]  kmalloc_double_kzfree+0x12c/0x360
[   18.217112]  kunit_try_run_case+0x1a6/0x480
[   18.217530]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.218117]  kthread+0x257/0x310
[   18.218398]  ret_from_fork+0x41/0x80
[   18.219269]  ret_from_fork_asm+0x1a/0x30
[   18.220001] 
[   18.220153] The buggy address belongs to the object at ffff888101f801e0
[   18.220153]  which belongs to the cache kmalloc-16 of size 16
[   18.221502] The buggy address is located 0 bytes inside of
[   18.221502]  freed 16-byte region [ffff888101f801e0, ffff888101f801f0)
[   18.222961] 
[   18.223142] The buggy address belongs to the physical page:
[   18.223960] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101f80
[   18.225112] flags: 0x200000000000000(node=0|zone=2)
[   18.225497] page_type: f5(slab)
[   18.226331] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   18.227285] raw: 0000000000000000 0000000080800080 00000001f5000000 0000000000000000
[   18.228298] page dumped because: kasan: bad access detected
[   18.228866] 
[   18.229069] Memory state around the buggy address:
[   18.230004]  ffff888101f80080: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   18.230983]  ffff888101f80100: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   18.231886] >ffff888101f80180: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   18.232543]                                                        ^
[   18.233384]  ffff888101f80200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.234254]  ffff888101f80280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.235208] ==================================================================