[   18.190987] ==================================================================
[   18.191288] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x168/0x308
[   18.191364] Read of size 1 at addr fff00000c59e5600 by task kunit_try_catch/194
[   18.191424] 
[   18.191459] CPU: 0 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G    B            N  6.15.4-rc3 #1 PREEMPT 
[   18.191878] Tainted: [B]=BAD_PAGE, [N]=TEST
[   18.192071] Hardware name: linux,dummy-virt (DT)
[   18.192157] Call trace:
[   18.192279]  show_stack+0x20/0x38 (C)
[   18.192373]  dump_stack_lvl+0x8c/0xd0
[   18.192546]  print_report+0x118/0x608
[   18.192601]  kasan_report+0xdc/0x128
[   18.192791]  __kasan_check_byte+0x54/0x70
[   18.193233]  kfree_sensitive+0x30/0xb0
[   18.193332]  kmalloc_double_kzfree+0x168/0x308
[   18.193477]  kunit_try_run_case+0x170/0x3f0
[   18.193629]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.193749]  kthread+0x328/0x630
[   18.193921]  ret_from_fork+0x10/0x20
[   18.194153] 
[   18.194179] Allocated by task 194:
[   18.194435]  kasan_save_stack+0x3c/0x68
[   18.194558]  kasan_save_track+0x20/0x40
[   18.194685]  kasan_save_alloc_info+0x40/0x58
[   18.194754]  __kasan_kmalloc+0xd4/0xd8
[   18.194795]  __kmalloc_cache_noprof+0x16c/0x3c0
[   18.195107]  kmalloc_double_kzfree+0xb8/0x308
[   18.195204]  kunit_try_run_case+0x170/0x3f0
[   18.195293]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.195411]  kthread+0x328/0x630
[   18.195450]  ret_from_fork+0x10/0x20
[   18.195914] 
[   18.196009] Freed by task 194:
[   18.196122]  kasan_save_stack+0x3c/0x68
[   18.196201]  kasan_save_track+0x20/0x40
[   18.196309]  kasan_save_free_info+0x4c/0x78
[   18.196563]  __kasan_slab_free+0x6c/0x98
[   18.196687]  kfree+0x214/0x3c8
[   18.196795]  kfree_sensitive+0x80/0xb0
[   18.196977]  kmalloc_double_kzfree+0x11c/0x308
[   18.197311]  kunit_try_run_case+0x170/0x3f0
[   18.197393]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   18.197576]  kthread+0x328/0x630
[   18.197625]  ret_from_fork+0x10/0x20
[   18.197883] 
[   18.197928] The buggy address belongs to the object at fff00000c59e5600
[   18.197928]  which belongs to the cache kmalloc-16 of size 16
[   18.198102] The buggy address is located 0 bytes inside of
[   18.198102]  freed 16-byte region [fff00000c59e5600, fff00000c59e5610)
[   18.198394] 
[   18.198540] The buggy address belongs to the physical page:
[   18.198623] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1059e5
[   18.198728] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   18.198801] page_type: f5(slab)
[   18.199124] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000
[   18.199202] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   18.199338] page dumped because: kasan: bad access detected
[   18.199417] 
[   18.199729] Memory state around the buggy address:
[   18.199783]  fff00000c59e5500: fa fb fc fc 00 04 fc fc fa fb fc fc fa fb fc fc
[   18.199875]  fff00000c59e5580: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   18.199975] >fff00000c59e5600: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.200084]                    ^
[   18.200118]  fff00000c59e5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.200174]  fff00000c59e5700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   18.200216] ==================================================================

[   11.262575] ==================================================================
[   11.263221] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x19c/0x350
[   11.263475] Read of size 1 at addr ffff8881025a7fc0 by task kunit_try_catch/211
[   11.264359] 
[   11.264716] CPU: 1 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G    B            N  6.15.4-rc3 #1 PREEMPT(voluntary) 
[   11.264769] Tainted: [B]=BAD_PAGE, [N]=TEST
[   11.264781] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   11.264802] Call Trace:
[   11.264816]  <TASK>
[   11.264835]  dump_stack_lvl+0x73/0xb0
[   11.264864]  print_report+0xd1/0x650
[   11.264887]  ? __virt_addr_valid+0x1db/0x2d0
[   11.264909]  ? kmalloc_double_kzfree+0x19c/0x350
[   11.264940]  ? kasan_complete_mode_report_info+0x64/0x200
[   11.264963]  ? kmalloc_double_kzfree+0x19c/0x350
[   11.264982]  kasan_report+0x141/0x180
[   11.265004]  ? kmalloc_double_kzfree+0x19c/0x350
[   11.265025]  ? kmalloc_double_kzfree+0x19c/0x350
[   11.265044]  __kasan_check_byte+0x3d/0x50
[   11.265065]  kfree_sensitive+0x22/0x90
[   11.265088]  kmalloc_double_kzfree+0x19c/0x350
[   11.265106]  ? __pfx_kmalloc_double_kzfree+0x10/0x10
[   11.265126]  ? __schedule+0x10cc/0x2b60
[   11.265149]  ? __pfx_read_tsc+0x10/0x10
[   11.265168]  ? ktime_get_ts64+0x86/0x230
[   11.265194]  kunit_try_run_case+0x1a5/0x480
[   11.265219]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.265240]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   11.265265]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   11.265287]  ? __kthread_parkme+0x82/0x180
[   11.265309]  ? preempt_count_sub+0x50/0x80
[   11.265334]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.265358]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.265381]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   11.265403]  kthread+0x337/0x6f0
[   11.265419]  ? trace_preempt_on+0x20/0xc0
[   11.265442]  ? __pfx_kthread+0x10/0x10
[   11.265459]  ? _raw_spin_unlock_irq+0x47/0x80
[   11.265479]  ? calculate_sigpending+0x7b/0xa0
[   11.265500]  ? __pfx_kthread+0x10/0x10
[   11.265518]  ret_from_fork+0x41/0x80
[   11.265538]  ? __pfx_kthread+0x10/0x10
[   11.265556]  ret_from_fork_asm+0x1a/0x30
[   11.265587]  </TASK>
[   11.265597] 
[   11.276746] Allocated by task 211:
[   11.277093]  kasan_save_stack+0x45/0x70
[   11.277451]  kasan_save_track+0x18/0x40
[   11.277823]  kasan_save_alloc_info+0x3b/0x50
[   11.278260]  __kasan_kmalloc+0xb7/0xc0
[   11.278536]  __kmalloc_cache_noprof+0x189/0x420
[   11.279030]  kmalloc_double_kzfree+0xa9/0x350
[   11.279515]  kunit_try_run_case+0x1a5/0x480
[   11.279858]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.280046]  kthread+0x337/0x6f0
[   11.280185]  ret_from_fork+0x41/0x80
[   11.280324]  ret_from_fork_asm+0x1a/0x30
[   11.280463] 
[   11.280532] Freed by task 211:
[   11.280643]  kasan_save_stack+0x45/0x70
[   11.280820]  kasan_save_track+0x18/0x40
[   11.280969]  kasan_save_free_info+0x3f/0x60
[   11.281171]  __kasan_slab_free+0x56/0x70
[   11.281432]  kfree+0x222/0x3f0
[   11.281547]  kfree_sensitive+0x67/0x90
[   11.281740]  kmalloc_double_kzfree+0x12b/0x350
[   11.282036]  kunit_try_run_case+0x1a5/0x480
[   11.282226]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.282439]  kthread+0x337/0x6f0
[   11.282556]  ret_from_fork+0x41/0x80
[   11.282697]  ret_from_fork_asm+0x1a/0x30
[   11.282887] 
[   11.283046] The buggy address belongs to the object at ffff8881025a7fc0
[   11.283046]  which belongs to the cache kmalloc-16 of size 16
[   11.283504] The buggy address is located 0 bytes inside of
[   11.283504]  freed 16-byte region [ffff8881025a7fc0, ffff8881025a7fd0)
[   11.284277] 
[   11.284417] The buggy address belongs to the physical page:
[   11.284667] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025a7
[   11.285095] flags: 0x200000000000000(node=0|zone=2)
[   11.285318] page_type: f5(slab)
[   11.285447] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   11.285787] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   11.286203] page dumped because: kasan: bad access detected
[   11.286424] 
[   11.286490] Memory state around the buggy address:
[   11.286643]  ffff8881025a7e80: 00 06 fc fc 00 06 fc fc 00 00 fc fc fa fb fc fc
[   11.286928]  ffff8881025a7f00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   11.287239] >ffff8881025a7f80: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc
[   11.287546]                                            ^
[   11.287752]  ffff8881025a8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.287974]  ffff8881025a8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   11.288244] ==================================================================