[   18.536431] ==================================================================
[   18.538169] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90
[   18.539380] Free of addr ffff8881027b1d60 by task kunit_try_catch/219
[   18.540212] 
[   18.540577] CPU: 0 UID: 0 PID: 219 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc2-next-20250617 #1 PREEMPT(voluntary) 
[   18.540704] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.540724] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   18.540755] Call Trace:
[   18.540772]  <TASK>
[   18.540791]  dump_stack_lvl+0x73/0xb0
[   18.540854]  print_report+0xd1/0x650
[   18.540948]  ? __virt_addr_valid+0x1db/0x2d0
[   18.541051]  ? kasan_complete_mode_report_info+0x64/0x200
[   18.541123]  ? kfree_sensitive+0x2e/0x90
[   18.541186]  kasan_report_invalid_free+0x10a/0x130
[   18.541294]  ? kfree_sensitive+0x2e/0x90
[   18.541375]  ? kfree_sensitive+0x2e/0x90
[   18.541444]  check_slab_allocation+0x101/0x130
[   18.541518]  __kasan_slab_pre_free+0x28/0x40
[   18.541589]  kfree+0xf0/0x3f0
[   18.541626]  ? add_taint+0x2e/0xa0
[   18.541651]  ? kfree_sensitive+0x2e/0x90
[   18.541679]  kfree_sensitive+0x2e/0x90
[   18.541704]  kmalloc_double_kzfree+0x19c/0x350
[   18.541735]  ? __pfx_kmalloc_double_kzfree+0x10/0x10
[   18.541770]  ? __pfx_kmalloc_double_kzfree+0x10/0x10
[   18.541805]  kunit_try_run_case+0x1a5/0x480
[   18.541865]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.541901]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   18.541929]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   18.541963]  ? __kthread_parkme+0x82/0x180
[   18.541989]  ? preempt_count_sub+0x50/0x80
[   18.542020]  ? __pfx_kunit_try_run_case+0x10/0x10
[   18.542052]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.542085]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   18.542116]  kthread+0x337/0x6f0
[   18.542142]  ? trace_preempt_on+0x20/0xc0
[   18.542174]  ? __pfx_kthread+0x10/0x10
[   18.542201]  ? _raw_spin_unlock_irq+0x47/0x80
[   18.542279]  ? calculate_sigpending+0x7b/0xa0
[   18.542361]  ? __pfx_kthread+0x10/0x10
[   18.542396]  ret_from_fork+0x116/0x1d0
[   18.542423]  ? __pfx_kthread+0x10/0x10
[   18.542451]  ret_from_fork_asm+0x1a/0x30
[   18.542490]  </TASK>
[   18.542504] 
[   18.558885] Allocated by task 219:
[   18.559107]  kasan_save_stack+0x45/0x70
[   18.559487]  kasan_save_track+0x18/0x40
[   18.559956]  kasan_save_alloc_info+0x3b/0x50
[   18.560511]  __kasan_kmalloc+0xb7/0xc0
[   18.560903]  __kmalloc_cache_noprof+0x189/0x420
[   18.561730]  kmalloc_double_kzfree+0xa9/0x350
[   18.562517]  kunit_try_run_case+0x1a5/0x480
[   18.562776]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.563798]  kthread+0x337/0x6f0
[   18.564760]  ret_from_fork+0x116/0x1d0
[   18.565167]  ret_from_fork_asm+0x1a/0x30
[   18.567807] 
[   18.568032] Freed by task 219:
[   18.568558]  kasan_save_stack+0x45/0x70
[   18.568798]  kasan_save_track+0x18/0x40
[   18.569127]  kasan_save_free_info+0x3f/0x60
[   18.569579]  __kasan_slab_free+0x56/0x70
[   18.569905]  kfree+0x222/0x3f0
[   18.570231]  kfree_sensitive+0x67/0x90
[   18.570781]  kmalloc_double_kzfree+0x12b/0x350
[   18.571389]  kunit_try_run_case+0x1a5/0x480
[   18.571863]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   18.572171]  kthread+0x337/0x6f0
[   18.573676]  ret_from_fork+0x116/0x1d0
[   18.574085]  ret_from_fork_asm+0x1a/0x30
[   18.575426] 
[   18.575630] The buggy address belongs to the object at ffff8881027b1d60
[   18.575630]  which belongs to the cache kmalloc-16 of size 16
[   18.576369] The buggy address is located 0 bytes inside of
[   18.576369]  16-byte region [ffff8881027b1d60, ffff8881027b1d70)
[   18.577616] 
[   18.577821] The buggy address belongs to the physical page:
[   18.578509] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1027b1
[   18.579154] flags: 0x200000000000000(node=0|zone=2)
[   18.579703] page_type: f5(slab)
[   18.580113] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   18.581365] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   18.581977] page dumped because: kasan: bad access detected
[   18.582611] 
[   18.582878] Memory state around the buggy address:
[   18.583460]  ffff8881027b1c00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   18.584073]  ffff8881027b1c80: fa fb fc fc fa fb fc fc 00 05 fc fc fa fb fc fc
[   18.584790] >ffff8881027b1d00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   18.585484]                                                        ^
[   18.585874]  ffff8881027b1d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.586731]  ffff8881027b1e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.587494] ==================================================================