[   13.938335] ==================================================================
[   13.938678] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0
[   13.939098] Read of size 1 at addr ffff88810397b990 by task kunit_try_catch/276
[   13.939398] 
[   13.939506] CPU: 0 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   13.939550] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.939562] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.939582] Call Trace:
[   13.939597]  <TASK>
[   13.939609]  dump_stack_lvl+0x73/0xb0
[   13.939637]  print_report+0xd1/0x610
[   13.939657]  ? __virt_addr_valid+0x1db/0x2d0
[   13.939679]  ? strlen+0x8f/0xb0
[   13.939695]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.939717]  ? strlen+0x8f/0xb0
[   13.939733]  kasan_report+0x141/0x180
[   13.939755]  ? strlen+0x8f/0xb0
[   13.939777]  __asan_report_load1_noabort+0x18/0x20
[   13.939801]  strlen+0x8f/0xb0
[   13.939818]  kasan_strings+0x57b/0xe80
[   13.939838]  ? trace_hardirqs_on+0x37/0xe0
[   13.939859]  ? __pfx_kasan_strings+0x10/0x10
[   13.939879]  ? finish_task_switch.isra.0+0x153/0x700
[   13.939901]  ? __switch_to+0x47/0xf50
[   13.939925]  ? __schedule+0x10cc/0x2b60
[   13.939947]  ? __pfx_read_tsc+0x10/0x10
[   13.939967]  ? ktime_get_ts64+0x86/0x230
[   13.939991]  kunit_try_run_case+0x1a5/0x480
[   13.940025]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.940047]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.940070]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.940093]  ? __kthread_parkme+0x82/0x180
[   13.940112]  ? preempt_count_sub+0x50/0x80
[   13.940135]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.940159]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.940182]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.940205]  kthread+0x337/0x6f0
[   13.940224]  ? trace_preempt_on+0x20/0xc0
[   13.940244]  ? __pfx_kthread+0x10/0x10
[   13.940265]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.940285]  ? calculate_sigpending+0x7b/0xa0
[   13.940307]  ? __pfx_kthread+0x10/0x10
[   13.940329]  ret_from_fork+0x116/0x1d0
[   13.940346]  ? __pfx_kthread+0x10/0x10
[   13.940366]  ret_from_fork_asm+0x1a/0x30
[   13.940395]  </TASK>
[   13.940404] 
[   13.948202] Allocated by task 276:
[   13.948336]  kasan_save_stack+0x45/0x70
[   13.948547]  kasan_save_track+0x18/0x40
[   13.949049]  kasan_save_alloc_info+0x3b/0x50
[   13.949278]  __kasan_kmalloc+0xb7/0xc0
[   13.949611]  __kmalloc_cache_noprof+0x189/0x420
[   13.949832]  kasan_strings+0xc0/0xe80
[   13.950001]  kunit_try_run_case+0x1a5/0x480
[   13.950208]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.950503]  kthread+0x337/0x6f0
[   13.950672]  ret_from_fork+0x116/0x1d0
[   13.950829]  ret_from_fork_asm+0x1a/0x30
[   13.950966] 
[   13.951046] Freed by task 276:
[   13.951204]  kasan_save_stack+0x45/0x70
[   13.951465]  kasan_save_track+0x18/0x40
[   13.951662]  kasan_save_free_info+0x3f/0x60
[   13.951855]  __kasan_slab_free+0x56/0x70
[   13.952063]  kfree+0x222/0x3f0
[   13.952181]  kasan_strings+0x2aa/0xe80
[   13.952361]  kunit_try_run_case+0x1a5/0x480
[   13.952668]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.952844]  kthread+0x337/0x6f0
[   13.952963]  ret_from_fork+0x116/0x1d0
[   13.953114]  ret_from_fork_asm+0x1a/0x30
[   13.953252] 
[   13.953322] The buggy address belongs to the object at ffff88810397b980
[   13.953322]  which belongs to the cache kmalloc-32 of size 32
[   13.953695] The buggy address is located 16 bytes inside of
[   13.953695]  freed 32-byte region [ffff88810397b980, ffff88810397b9a0)
[   13.954216] 
[   13.954311] The buggy address belongs to the physical page:
[   13.954775] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10397b
[   13.955260] flags: 0x200000000000000(node=0|zone=2)
[   13.955573] page_type: f5(slab)
[   13.955738] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   13.956565] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   13.956826] page dumped because: kasan: bad access detected
[   13.957018] 
[   13.957088] Memory state around the buggy address:
[   13.957241]  ffff88810397b880: 00 00 00 04 fc fc fc fc fa fb fb fb fc fc fc fc
[   13.957817]  ffff88810397b900: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.958160] >ffff88810397b980: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.958625]                          ^
[   13.958809]  ffff88810397ba00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   13.959142]  ffff88810397ba80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   13.959504] ==================================================================