[   25.294765] ==================================================================
[   25.296805] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90
[   25.297246] Free of addr ffff88810527f2c0 by task kunit_try_catch/241
[   25.298515] 
[   25.298627] CPU: 1 UID: 0 PID: 241 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4-next-20250704 #1 PREEMPT(voluntary) 
[   25.298682] Tainted: [B]=BAD_PAGE, [N]=TEST
[   25.298697] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   25.298721] Call Trace:
[   25.298737]  <TASK>
[   25.298756]  dump_stack_lvl+0x73/0xb0
[   25.298787]  print_report+0xd1/0x650
[   25.298811]  ? __virt_addr_valid+0x1db/0x2d0
[   25.298837]  ? kasan_complete_mode_report_info+0x64/0x200
[   25.299345]  ? kfree_sensitive+0x2e/0x90
[   25.299406]  kasan_report_invalid_free+0x10a/0x130
[   25.299435]  ? kfree_sensitive+0x2e/0x90
[   25.299462]  ? kfree_sensitive+0x2e/0x90
[   25.299486]  check_slab_allocation+0x101/0x130
[   25.299513]  __kasan_slab_pre_free+0x28/0x40
[   25.299534]  kfree+0xf0/0x3f0
[   25.299556]  ? kfree_sensitive+0x2e/0x90
[   25.299582]  kfree_sensitive+0x2e/0x90
[   25.299607]  kmalloc_double_kzfree+0x19c/0x350
[   25.299630]  ? __pfx_kmalloc_double_kzfree+0x10/0x10
[   25.299655]  ? __schedule+0x10cc/0x2b60
[   25.299681]  ? __pfx_read_tsc+0x10/0x10
[   25.299704]  ? ktime_get_ts64+0x86/0x230
[   25.299730]  kunit_try_run_case+0x1a5/0x480
[   25.299756]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.299780]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   25.299805]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   25.299831]  ? __kthread_parkme+0x82/0x180
[   25.299852]  ? preempt_count_sub+0x50/0x80
[   25.299903]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.299929]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.299955]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   25.299980]  kthread+0x337/0x6f0
[   25.300001]  ? trace_preempt_on+0x20/0xc0
[   25.300026]  ? __pfx_kthread+0x10/0x10
[   25.300048]  ? _raw_spin_unlock_irq+0x47/0x80
[   25.300071]  ? calculate_sigpending+0x7b/0xa0
[   25.300096]  ? __pfx_kthread+0x10/0x10
[   25.300119]  ret_from_fork+0x116/0x1d0
[   25.300194]  ? __pfx_kthread+0x10/0x10
[   25.300219]  ret_from_fork_asm+0x1a/0x30
[   25.300258]  </TASK>
[   25.300271] 
[   25.314084] Allocated by task 241:
[   25.314529]  kasan_save_stack+0x45/0x70
[   25.314773]  kasan_save_track+0x18/0x40
[   25.315119]  kasan_save_alloc_info+0x3b/0x50
[   25.315420]  __kasan_kmalloc+0xb7/0xc0
[   25.315610]  __kmalloc_cache_noprof+0x189/0x420
[   25.315821]  kmalloc_double_kzfree+0xa9/0x350
[   25.316488]  kunit_try_run_case+0x1a5/0x480
[   25.316745]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.317212]  kthread+0x337/0x6f0
[   25.317594]  ret_from_fork+0x116/0x1d0
[   25.318138]  ret_from_fork_asm+0x1a/0x30
[   25.318344] 
[   25.318668] Freed by task 241:
[   25.318828]  kasan_save_stack+0x45/0x70
[   25.319386]  kasan_save_track+0x18/0x40
[   25.319724]  kasan_save_free_info+0x3f/0x60
[   25.320157]  __kasan_slab_free+0x56/0x70
[   25.320375]  kfree+0x222/0x3f0
[   25.320652]  kfree_sensitive+0x67/0x90
[   25.321022]  kmalloc_double_kzfree+0x12b/0x350
[   25.321362]  kunit_try_run_case+0x1a5/0x480
[   25.321589]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.321826]  kthread+0x337/0x6f0
[   25.322373]  ret_from_fork+0x116/0x1d0
[   25.322662]  ret_from_fork_asm+0x1a/0x30
[   25.323073] 
[   25.323377] The buggy address belongs to the object at ffff88810527f2c0
[   25.323377]  which belongs to the cache kmalloc-16 of size 16
[   25.324123] The buggy address is located 0 bytes inside of
[   25.324123]  16-byte region [ffff88810527f2c0, ffff88810527f2d0)
[   25.325070] 
[   25.325342] The buggy address belongs to the physical page:
[   25.325603] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10527f
[   25.326562] flags: 0x200000000000000(node=0|zone=2)
[   25.326926] page_type: f5(slab)
[   25.327484] raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122
[   25.327830] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   25.328358] page dumped because: kasan: bad access detected
[   25.328618] 
[   25.328708] Memory state around the buggy address:
[   25.329140]  ffff88810527f180: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   25.329672]  ffff88810527f200: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   25.330127] >ffff88810527f280: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc
[   25.330867]                                            ^
[   25.331132]  ffff88810527f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.331443]  ffff88810527f380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   25.331735] ==================================================================