[   13.915191] ==================================================================
[   13.915751] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   13.916083] Read of size 1 at addr ffff88810397b990 by task kunit_try_catch/276
[   13.916462] 
[   13.916581] CPU: 0 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   13.916622] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.916633] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.916654] Call Trace:
[   13.916665]  <TASK>
[   13.916677]  dump_stack_lvl+0x73/0xb0
[   13.916705]  print_report+0xd1/0x610
[   13.916727]  ? __virt_addr_valid+0x1db/0x2d0
[   13.916747]  ? kasan_strings+0xcbc/0xe80
[   13.916767]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.916789]  ? kasan_strings+0xcbc/0xe80
[   13.916810]  kasan_report+0x141/0x180
[   13.916830]  ? kasan_strings+0xcbc/0xe80
[   13.916855]  __asan_report_load1_noabort+0x18/0x20
[   13.916878]  kasan_strings+0xcbc/0xe80
[   13.916897]  ? trace_hardirqs_on+0x37/0xe0
[   13.916919]  ? __pfx_kasan_strings+0x10/0x10
[   13.916939]  ? finish_task_switch.isra.0+0x153/0x700
[   13.916960]  ? __switch_to+0x47/0xf50
[   13.916990]  ? __schedule+0x10cc/0x2b60
[   13.917022]  ? __pfx_read_tsc+0x10/0x10
[   13.917045]  ? ktime_get_ts64+0x86/0x230
[   13.917068]  kunit_try_run_case+0x1a5/0x480
[   13.917092]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.917114]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.917137]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.917160]  ? __kthread_parkme+0x82/0x180
[   13.917179]  ? preempt_count_sub+0x50/0x80
[   13.917201]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.917225]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.917248]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.917270]  kthread+0x337/0x6f0
[   13.917289]  ? trace_preempt_on+0x20/0xc0
[   13.917309]  ? __pfx_kthread+0x10/0x10
[   13.917329]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.917350]  ? calculate_sigpending+0x7b/0xa0
[   13.917436]  ? __pfx_kthread+0x10/0x10
[   13.917457]  ret_from_fork+0x116/0x1d0
[   13.917475]  ? __pfx_kthread+0x10/0x10
[   13.917495]  ret_from_fork_asm+0x1a/0x30
[   13.917526]  </TASK>
[   13.917535] 
[   13.925294] Allocated by task 276:
[   13.925592]  kasan_save_stack+0x45/0x70
[   13.925747]  kasan_save_track+0x18/0x40
[   13.925935]  kasan_save_alloc_info+0x3b/0x50
[   13.926130]  __kasan_kmalloc+0xb7/0xc0
[   13.926304]  __kmalloc_cache_noprof+0x189/0x420
[   13.926634]  kasan_strings+0xc0/0xe80
[   13.926771]  kunit_try_run_case+0x1a5/0x480
[   13.926917]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.927102]  kthread+0x337/0x6f0
[   13.927224]  ret_from_fork+0x116/0x1d0
[   13.927354]  ret_from_fork_asm+0x1a/0x30
[   13.927493] 
[   13.927567] Freed by task 276:
[   13.927676]  kasan_save_stack+0x45/0x70
[   13.927810]  kasan_save_track+0x18/0x40
[   13.927942]  kasan_save_free_info+0x3f/0x60
[   13.928327]  __kasan_slab_free+0x56/0x70
[   13.928591]  kfree+0x222/0x3f0
[   13.928756]  kasan_strings+0x2aa/0xe80
[   13.928941]  kunit_try_run_case+0x1a5/0x480
[   13.929817]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.930103]  kthread+0x337/0x6f0
[   13.930279]  ret_from_fork+0x116/0x1d0
[   13.931288]  ret_from_fork_asm+0x1a/0x30
[   13.931724] 
[   13.931828] The buggy address belongs to the object at ffff88810397b980
[   13.931828]  which belongs to the cache kmalloc-32 of size 32
[   13.932741] The buggy address is located 16 bytes inside of
[   13.932741]  freed 32-byte region [ffff88810397b980, ffff88810397b9a0)
[   13.933638] 
[   13.933746] The buggy address belongs to the physical page:
[   13.933943] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10397b
[   13.934199] flags: 0x200000000000000(node=0|zone=2)
[   13.934419] page_type: f5(slab)
[   13.934596] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.934920] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.935256] page dumped because: kasan: bad access detected
[   13.935706] 
[   13.935795] Memory state around the buggy address:
[   13.935993]  ffff88810397b880: 00 00 00 04 fc fc fc fc fa fb fb fb fc fc fc fc
[   13.936298]  ffff88810397b900: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.936665] >ffff88810397b980: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.936883]                          ^
[   13.937083]  ffff88810397ba00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.937458]  ffff88810397ba80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.937869] ==================================================================