[   13.122956] ==================================================================
[   13.123409] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x19c/0x350
[   13.123676] Read of size 1 at addr ffff888102434600 by task kunit_try_catch/209
[   13.123905] 
[   13.124021] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[   13.124066] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.124076] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.124096] Call Trace:
[   13.124108]  <TASK>
[   13.124124]  dump_stack_lvl+0x73/0xb0
[   13.124154]  print_report+0xd1/0x650
[   13.124194]  ? __virt_addr_valid+0x1db/0x2d0
[   13.124218]  ? kmalloc_double_kzfree+0x19c/0x350
[   13.124240]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.124263]  ? kmalloc_double_kzfree+0x19c/0x350
[   13.124285]  kasan_report+0x141/0x180
[   13.124306]  ? kmalloc_double_kzfree+0x19c/0x350
[   13.124332]  ? kmalloc_double_kzfree+0x19c/0x350
[   13.124354]  __kasan_check_byte+0x3d/0x50
[   13.124376]  kfree_sensitive+0x22/0x90
[   13.124399]  kmalloc_double_kzfree+0x19c/0x350
[   13.124421]  ? __pfx_kmalloc_double_kzfree+0x10/0x10
[   13.124445]  ? __schedule+0x10cc/0x2b60
[   13.124468]  ? __pfx_read_tsc+0x10/0x10
[   13.124489]  ? ktime_get_ts64+0x86/0x230
[   13.124512]  kunit_try_run_case+0x1a5/0x480
[   13.124537]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.124560]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.124584]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.124618]  ? __kthread_parkme+0x82/0x180
[   13.124640]  ? preempt_count_sub+0x50/0x80
[   13.124664]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.124687]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.124711]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.124735]  kthread+0x337/0x6f0
[   13.124754]  ? trace_preempt_on+0x20/0xc0
[   13.124777]  ? __pfx_kthread+0x10/0x10
[   13.124814]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.124835]  ? calculate_sigpending+0x7b/0xa0
[   13.124859]  ? __pfx_kthread+0x10/0x10
[   13.124881]  ret_from_fork+0x116/0x1d0
[   13.124899]  ? __pfx_kthread+0x10/0x10
[   13.124918]  ret_from_fork_asm+0x1a/0x30
[   13.124949]  </TASK>
[   13.124959] 
[   13.132383] Allocated by task 209:
[   13.132571]  kasan_save_stack+0x45/0x70
[   13.132788]  kasan_save_track+0x18/0x40
[   13.133023]  kasan_save_alloc_info+0x3b/0x50
[   13.133190]  __kasan_kmalloc+0xb7/0xc0
[   13.133348]  __kmalloc_cache_noprof+0x189/0x420
[   13.133577]  kmalloc_double_kzfree+0xa9/0x350
[   13.133775]  kunit_try_run_case+0x1a5/0x480
[   13.134189]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.134413]  kthread+0x337/0x6f0
[   13.134578]  ret_from_fork+0x116/0x1d0
[   13.134770]  ret_from_fork_asm+0x1a/0x30
[   13.135025] 
[   13.135095] Freed by task 209:
[   13.135205]  kasan_save_stack+0x45/0x70
[   13.135340]  kasan_save_track+0x18/0x40
[   13.135473]  kasan_save_free_info+0x3f/0x60
[   13.135629]  __kasan_slab_free+0x56/0x70
[   13.135821]  kfree+0x222/0x3f0
[   13.135982]  kfree_sensitive+0x67/0x90
[   13.136226]  kmalloc_double_kzfree+0x12b/0x350
[   13.136441]  kunit_try_run_case+0x1a5/0x480
[   13.136819]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.137024]  kthread+0x337/0x6f0
[   13.137144]  ret_from_fork+0x116/0x1d0
[   13.137275]  ret_from_fork_asm+0x1a/0x30
[   13.137414] 
[   13.137487] The buggy address belongs to the object at ffff888102434600
[   13.137487]  which belongs to the cache kmalloc-16 of size 16
[   13.138197] The buggy address is located 0 bytes inside of
[   13.138197]  freed 16-byte region [ffff888102434600, ffff888102434610)
[   13.138728] 
[   13.138828] The buggy address belongs to the physical page:
[   13.139148] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102434
[   13.139476] flags: 0x200000000000000(node=0|zone=2)
[   13.139699] page_type: f5(slab)
[   13.140081] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   13.140385] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   13.140704] page dumped because: kasan: bad access detected
[   13.141008] 
[   13.141104] Memory state around the buggy address:
[   13.141306]  ffff888102434500: fa fb fc fc fa fb fc fc fa fb fc fc 00 05 fc fc
[   13.141590]  ffff888102434580: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   13.141952] >ffff888102434600: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.142170]                    ^
[   13.142284]  ffff888102434680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.142532]  ffff888102434700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.142901] ==================================================================