[   30.683787] ==================================================================
[   30.683851] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x168/0x308
[   30.683921] Read of size 1 at addr fff00000c918c680 by task kunit_try_catch/223
[   30.683971] 
[   30.684010] CPU: 1 UID: 0 PID: 223 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5-next-20250711 #1 PREEMPT 
[   30.684098] Tainted: [B]=BAD_PAGE, [N]=TEST
[   30.684124] Hardware name: linux,dummy-virt (DT)
[   30.684157] Call trace:
[   30.684204]  show_stack+0x20/0x38 (C)
[   30.684258]  dump_stack_lvl+0x8c/0xd0
[   30.684305]  print_report+0x118/0x5d0
[   30.684804]  kasan_report+0xdc/0x128
[   30.684847]  __kasan_check_byte+0x54/0x70
[   30.684896]  kfree_sensitive+0x30/0xb0
[   30.685004]  kmalloc_double_kzfree+0x168/0x308
[   30.685070]  kunit_try_run_case+0x170/0x3f0
[   30.685138]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   30.685190]  kthread+0x328/0x630
[   30.685236]  ret_from_fork+0x10/0x20
[   30.685284] 
[   30.685302] Allocated by task 223:
[   30.685340]  kasan_save_stack+0x3c/0x68
[   30.685382]  kasan_save_track+0x20/0x40
[   30.685451]  kasan_save_alloc_info+0x40/0x58
[   30.685491]  __kasan_kmalloc+0xd4/0xd8
[   30.685529]  __kmalloc_cache_noprof+0x16c/0x3c0
[   30.685571]  kmalloc_double_kzfree+0xb8/0x308
[   30.685611]  kunit_try_run_case+0x170/0x3f0
[   30.685650]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   30.685690]  kthread+0x328/0x630
[   30.685724]  ret_from_fork+0x10/0x20
[   30.685760] 
[   30.685779] Freed by task 223:
[   30.685804]  kasan_save_stack+0x3c/0x68
[   30.685843]  kasan_save_track+0x20/0x40
[   30.685880]  kasan_save_free_info+0x4c/0x78
[   30.685916]  __kasan_slab_free+0x6c/0x98
[   30.685955]  kfree+0x214/0x3c8
[   30.685990]  kfree_sensitive+0x80/0xb0
[   30.686028]  kmalloc_double_kzfree+0x11c/0x308
[   30.686068]  kunit_try_run_case+0x170/0x3f0
[   30.686107]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   30.686148]  kthread+0x328/0x630
[   30.686204]  ret_from_fork+0x10/0x20
[   30.686272] 
[   30.686383] The buggy address belongs to the object at fff00000c918c680
[   30.686383]  which belongs to the cache kmalloc-16 of size 16
[   30.686469] The buggy address is located 0 bytes inside of
[   30.686469]  freed 16-byte region [fff00000c918c680, fff00000c918c690)
[   30.686602] 
[   30.686662] The buggy address belongs to the physical page:
[   30.686723] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10918c
[   30.686855] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   30.686922] page_type: f5(slab)
[   30.686994] raw: 0bfffe0000000000 fff00000c0001640 dead000000000100 dead000000000122
[   30.687130] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   30.687207] page dumped because: kasan: bad access detected
[   30.687276] 
[   30.687314] Memory state around the buggy address:
[   30.687358]  fff00000c918c580: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   30.687668]  fff00000c918c600: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   30.687787] >fff00000c918c680: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.687874]                    ^
[   30.687910]  fff00000c918c700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.687996]  fff00000c918c780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.688086] ==================================================================

[   24.114060] ==================================================================
[   24.115392] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x19c/0x350
[   24.115770] Read of size 1 at addr ffff888104c83b60 by task kunit_try_catch/242
[   24.116037] 
[   24.116160] CPU: 0 UID: 0 PID: 242 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5-next-20250711 #1 PREEMPT(voluntary) 
[   24.116220] Tainted: [B]=BAD_PAGE, [N]=TEST
[   24.116233] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   24.116256] Call Trace:
[   24.116270]  <TASK>
[   24.116289]  dump_stack_lvl+0x73/0xb0
[   24.116330]  print_report+0xd1/0x610
[   24.116354]  ? __virt_addr_valid+0x1db/0x2d0
[   24.116380]  ? kmalloc_double_kzfree+0x19c/0x350
[   24.116402]  ? kasan_complete_mode_report_info+0x64/0x200
[   24.116428]  ? kmalloc_double_kzfree+0x19c/0x350
[   24.116450]  kasan_report+0x141/0x180
[   24.116471]  ? kmalloc_double_kzfree+0x19c/0x350
[   24.116495]  ? kmalloc_double_kzfree+0x19c/0x350
[   24.116517]  __kasan_check_byte+0x3d/0x50
[   24.116538]  kfree_sensitive+0x22/0x90
[   24.116564]  kmalloc_double_kzfree+0x19c/0x350
[   24.116586]  ? __pfx_kmalloc_double_kzfree+0x10/0x10
[   24.116609]  ? __schedule+0x10cc/0x2b60
[   24.116633]  ? __pfx_read_tsc+0x10/0x10
[   24.116655]  ? ktime_get_ts64+0x86/0x230
[   24.116681]  kunit_try_run_case+0x1a5/0x480
[   24.116705]  ? __pfx_kunit_try_run_case+0x10/0x10
[   24.116726]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   24.116880]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   24.116904]  ? __kthread_parkme+0x82/0x180
[   24.116926]  ? preempt_count_sub+0x50/0x80
[   24.116950]  ? __pfx_kunit_try_run_case+0x10/0x10
[   24.116973]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   24.116998]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   24.117022]  kthread+0x337/0x6f0
[   24.117042]  ? trace_preempt_on+0x20/0xc0
[   24.117066]  ? __pfx_kthread+0x10/0x10
[   24.117086]  ? _raw_spin_unlock_irq+0x47/0x80
[   24.117107]  ? calculate_sigpending+0x7b/0xa0
[   24.117132]  ? __pfx_kthread+0x10/0x10
[   24.117153]  ret_from_fork+0x116/0x1d0
[   24.117172]  ? __pfx_kthread+0x10/0x10
[   24.117193]  ret_from_fork_asm+0x1a/0x30
[   24.117224]  </TASK>
[   24.117235] 
[   24.124696] Allocated by task 242:
[   24.124909]  kasan_save_stack+0x45/0x70
[   24.125055]  kasan_save_track+0x18/0x40
[   24.125243]  kasan_save_alloc_info+0x3b/0x50
[   24.125646]  __kasan_kmalloc+0xb7/0xc0
[   24.125850]  __kmalloc_cache_noprof+0x189/0x420
[   24.126065]  kmalloc_double_kzfree+0xa9/0x350
[   24.126368]  kunit_try_run_case+0x1a5/0x480
[   24.126599]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   24.126869]  kthread+0x337/0x6f0
[   24.126986]  ret_from_fork+0x116/0x1d0
[   24.127146]  ret_from_fork_asm+0x1a/0x30
[   24.127427] 
[   24.127519] Freed by task 242:
[   24.127669]  kasan_save_stack+0x45/0x70
[   24.127857]  kasan_save_track+0x18/0x40
[   24.128028]  kasan_save_free_info+0x3f/0x60
[   24.128210]  __kasan_slab_free+0x56/0x70
[   24.128429]  kfree+0x222/0x3f0
[   24.128614]  kfree_sensitive+0x67/0x90
[   24.128819]  kmalloc_double_kzfree+0x12b/0x350
[   24.129003]  kunit_try_run_case+0x1a5/0x480
[   24.129187]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   24.129408]  kthread+0x337/0x6f0
[   24.129578]  ret_from_fork+0x116/0x1d0
[   24.129773]  ret_from_fork_asm+0x1a/0x30
[   24.129944] 
[   24.130023] The buggy address belongs to the object at ffff888104c83b60
[   24.130023]  which belongs to the cache kmalloc-16 of size 16
[   24.130462] The buggy address is located 0 bytes inside of
[   24.130462]  freed 16-byte region [ffff888104c83b60, ffff888104c83b70)
[   24.131173] 
[   24.131349] The buggy address belongs to the physical page:
[   24.131571] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104c83
[   24.131906] flags: 0x200000000000000(node=0|zone=2)
[   24.132124] page_type: f5(slab)
[   24.132330] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   24.132641] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   24.132956] page dumped because: kasan: bad access detected
[   24.133162] 
[   24.133227] Memory state around the buggy address:
[   24.133542]  ffff888104c83a00: fa fb fc fc fa fb fc fc fa fb fc fc 00 04 fc fc
[   24.133827]  ffff888104c83a80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   24.134117] >ffff888104c83b00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   24.134607]                                                        ^
[   24.134821]  ffff888104c83b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   24.135055]  ffff888104c83c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   24.135471] ==================================================================