[   28.419492] ==================================================================
[   28.421231] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x19d/0x360
[   28.421959] Read of size 1 at addr ffff8881025ed7c0 by task kunit_try_catch/199
[   28.422652] 
[   28.423425] CPU: 1 UID: 0 PID: 199 Comm: kunit_try_catch Tainted: G    B            N 6.13.0-rc1-next-20241205 #1
[   28.424963] Tainted: [B]=BAD_PAGE, [N]=TEST
[   28.425747] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   28.426935] Call Trace:
[   28.427151]  <TASK>
[   28.428205]  dump_stack_lvl+0x73/0xb0
[   28.428617]  print_report+0xd1/0x640
[   28.429453]  ? __virt_addr_valid+0x1db/0x2d0
[   28.430300]  ? kasan_complete_mode_report_info+0x64/0x200
[   28.431411]  kasan_report+0x102/0x140
[   28.431790]  ? kmalloc_double_kzfree+0x19d/0x360
[   28.432874]  ? kmalloc_double_kzfree+0x19d/0x360
[   28.433406]  ? kmalloc_double_kzfree+0x19d/0x360
[   28.434299]  __kasan_check_byte+0x3d/0x50
[   28.434726]  kfree_sensitive+0x22/0x90
[   28.435449]  kmalloc_double_kzfree+0x19d/0x360
[   28.435861]  ? __pfx_kmalloc_double_kzfree+0x10/0x10
[   28.436997]  ? __schedule+0xc70/0x27e0
[   28.437466]  ? __pfx_read_tsc+0x10/0x10
[   28.438465]  ? ktime_get_ts64+0x86/0x230
[   28.438875]  kunit_try_run_case+0x1b3/0x490
[   28.439439]  ? __pfx_kunit_try_run_case+0x10/0x10
[   28.439877]  ? _raw_spin_lock_irqsave+0xa2/0x110
[   28.440998]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   28.441857]  ? __kthread_parkme+0x82/0x160
[   28.442611]  ? preempt_count_sub+0x50/0x80
[   28.443542]  ? __pfx_kunit_try_run_case+0x10/0x10
[   28.444516]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   28.445483]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   28.446500]  kthread+0x257/0x310
[   28.447088]  ? __pfx_kthread+0x10/0x10
[   28.447564]  ret_from_fork+0x41/0x80
[   28.447820]  ? __pfx_kthread+0x10/0x10
[   28.448116]  ret_from_fork_asm+0x1a/0x30
[   28.448765]  </TASK>
[   28.449187] 
[   28.449351] Allocated by task 199:
[   28.449934]  kasan_save_stack+0x3d/0x60
[   28.450649]  kasan_save_track+0x18/0x40
[   28.451368]  kasan_save_alloc_info+0x3b/0x50
[   28.452235]  __kasan_kmalloc+0xb7/0xc0
[   28.452622]  __kmalloc_cache_noprof+0x184/0x410
[   28.453166]  kmalloc_double_kzfree+0xaa/0x360
[   28.453660]  kunit_try_run_case+0x1b3/0x490
[   28.454214]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   28.455115]  kthread+0x257/0x310
[   28.455508]  ret_from_fork+0x41/0x80
[   28.456349]  ret_from_fork_asm+0x1a/0x30
[   28.456748] 
[   28.456915] Freed by task 199:
[   28.457370]  kasan_save_stack+0x3d/0x60
[   28.457943]  kasan_save_track+0x18/0x40
[   28.458824]  kasan_save_free_info+0x3f/0x60
[   28.459493]  __kasan_slab_free+0x56/0x70
[   28.459716]  kfree+0x123/0x3f0
[   28.460494]  kfree_sensitive+0x67/0x90
[   28.460947]  kmalloc_double_kzfree+0x12c/0x360
[   28.461734]  kunit_try_run_case+0x1b3/0x490
[   28.462119]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   28.462993]  kthread+0x257/0x310
[   28.463527]  ret_from_fork+0x41/0x80
[   28.464338]  ret_from_fork_asm+0x1a/0x30
[   28.464711] 
[   28.465024] The buggy address belongs to the object at ffff8881025ed7c0
[   28.465024]  which belongs to the cache kmalloc-16 of size 16
[   28.466255] The buggy address is located 0 bytes inside of
[   28.466255]  freed 16-byte region [ffff8881025ed7c0, ffff8881025ed7d0)
[   28.468300] 
[   28.468488] The buggy address belongs to the physical page:
[   28.469091] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025ed
[   28.469838] flags: 0x200000000000000(node=0|zone=2)
[   28.470466] page_type: f5(slab)
[   28.471423] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000
[   28.472423] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
[   28.473005] page dumped because: kasan: bad access detected
[   28.474123] 
[   28.474353] Memory state around the buggy address:
[   28.474891]  ffff8881025ed680: 00 05 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc
[   28.475548]  ffff8881025ed700: 00 02 fc fc fa fb fc fc fa fb fc fc fa fb fc fc
[   28.476190] >ffff8881025ed780: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc
[   28.477072]                                            ^
[   28.477537]  ffff8881025ed800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   28.478324]  ffff8881025ed880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   28.479222] ==================================================================