[   15.787413] ==================================================================
[   15.788721] BUG: KASAN: slab-use-after-free in strcmp+0xb0/0xc0
[   15.789139] Read of size 1 at addr ffff8881038e5fd0 by task kunit_try_catch/277
[   15.789509] 
[   15.789642] CPU: 0 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   15.789714] Tainted: [B]=BAD_PAGE, [N]=TEST
[   15.789730] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   15.789759] Call Trace:
[   15.789774]  <TASK>
[   15.789797]  dump_stack_lvl+0x73/0xb0
[   15.789830]  print_report+0xd1/0x650
[   15.789875]  ? __virt_addr_valid+0x1db/0x2d0
[   15.789917]  ? strcmp+0xb0/0xc0
[   15.789944]  ? kasan_complete_mode_report_info+0x64/0x200
[   15.789972]  ? strcmp+0xb0/0xc0
[   15.790014]  kasan_report+0x141/0x180
[   15.790039]  ? strcmp+0xb0/0xc0
[   15.790070]  __asan_report_load1_noabort+0x18/0x20
[   15.790099]  strcmp+0xb0/0xc0
[   15.790125]  kasan_strings+0x431/0xe80
[   15.790150]  ? trace_hardirqs_on+0x37/0xe0
[   15.790179]  ? __pfx_kasan_strings+0x10/0x10
[   15.790203]  ? finish_task_switch.isra.0+0x153/0x700
[   15.790230]  ? __switch_to+0x47/0xf50
[   15.790272]  ? __schedule+0x10cc/0x2b60
[   15.790301]  ? __pfx_read_tsc+0x10/0x10
[   15.790340]  ? ktime_get_ts64+0x86/0x230
[   15.790371]  kunit_try_run_case+0x1a5/0x480
[   15.790402]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.790434]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   15.790461]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   15.790489]  ? __kthread_parkme+0x82/0x180
[   15.790514]  ? preempt_count_sub+0x50/0x80
[   15.790541]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.790569]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.790597]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   15.790624]  kthread+0x337/0x6f0
[   15.790670]  ? trace_preempt_on+0x20/0xc0
[   15.790697]  ? __pfx_kthread+0x10/0x10
[   15.790734]  ? _raw_spin_unlock_irq+0x47/0x80
[   15.790760]  ? calculate_sigpending+0x7b/0xa0
[   15.790788]  ? __pfx_kthread+0x10/0x10
[   15.790813]  ret_from_fork+0x116/0x1d0
[   15.790836]  ? __pfx_kthread+0x10/0x10
[   15.790860]  ret_from_fork_asm+0x1a/0x30
[   15.790896]  </TASK>
[   15.790909] 
[   15.804134] Allocated by task 277:
[   15.804398]  kasan_save_stack+0x45/0x70
[   15.804587]  kasan_save_track+0x18/0x40
[   15.804811]  kasan_save_alloc_info+0x3b/0x50
[   15.805297]  __kasan_kmalloc+0xb7/0xc0
[   15.805891]  __kmalloc_cache_noprof+0x189/0x420
[   15.806417]  kasan_strings+0xc0/0xe80
[   15.806929]  kunit_try_run_case+0x1a5/0x480
[   15.807536]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.807873]  kthread+0x337/0x6f0
[   15.808058]  ret_from_fork+0x116/0x1d0
[   15.808529]  ret_from_fork_asm+0x1a/0x30
[   15.809040] 
[   15.809287] Freed by task 277:
[   15.809529]  kasan_save_stack+0x45/0x70
[   15.810177]  kasan_save_track+0x18/0x40
[   15.810356]  kasan_save_free_info+0x3f/0x60
[   15.810538]  __kasan_slab_free+0x56/0x70
[   15.810723]  kfree+0x222/0x3f0
[   15.811026]  kasan_strings+0x2aa/0xe80
[   15.811266]  kunit_try_run_case+0x1a5/0x480
[   15.811476]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.811942]  kthread+0x337/0x6f0
[   15.812145]  ret_from_fork+0x116/0x1d0
[   15.812364]  ret_from_fork_asm+0x1a/0x30
[   15.812531] 
[   15.812688] The buggy address belongs to the object at ffff8881038e5fc0
[   15.812688]  which belongs to the cache kmalloc-32 of size 32
[   15.813387] The buggy address is located 16 bytes inside of
[   15.813387]  freed 32-byte region [ffff8881038e5fc0, ffff8881038e5fe0)
[   15.814260] 
[   15.814417] The buggy address belongs to the physical page:
[   15.814695] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1038e5
[   15.815214] flags: 0x200000000000000(node=0|zone=2)
[   15.815462] page_type: f5(slab)
[   15.815702] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   15.816194] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000
[   15.816542] page dumped because: kasan: bad access detected
[   15.816892] 
[   15.817011] Memory state around the buggy address:
[   15.817319]  ffff8881038e5e80: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc
[   15.817734]  ffff8881038e5f00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   15.818350] >ffff8881038e5f80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   15.818728]                                                  ^
[   15.819150]  ffff8881038e6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   15.819499]  ffff8881038e6080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.820034] ==================================================================