[   15.007620] ==================================================================
[   15.008280] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   15.009034] Read of size 1 at addr ffff888102a5ed10 by task kunit_try_catch/276
[   15.011923] 
[   15.012027] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   15.012079] Tainted: [B]=BAD_PAGE, [N]=TEST
[   15.012091] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   15.012113] Call Trace:
[   15.012124]  <TASK>
[   15.012139]  dump_stack_lvl+0x73/0xb0
[   15.012170]  print_report+0xd1/0x610
[   15.012193]  ? __virt_addr_valid+0x1db/0x2d0
[   15.012216]  ? kasan_strings+0xcbc/0xe80
[   15.012714]  ? kasan_complete_mode_report_info+0x64/0x200
[   15.012761]  ? kasan_strings+0xcbc/0xe80
[   15.012784]  kasan_report+0x141/0x180
[   15.012807]  ? kasan_strings+0xcbc/0xe80
[   15.012833]  __asan_report_load1_noabort+0x18/0x20
[   15.012858]  kasan_strings+0xcbc/0xe80
[   15.012879]  ? trace_hardirqs_on+0x37/0xe0
[   15.012904]  ? __pfx_kasan_strings+0x10/0x10
[   15.012926]  ? finish_task_switch.isra.0+0x153/0x700
[   15.012949]  ? __switch_to+0x47/0xf50
[   15.012975]  ? __schedule+0x10cc/0x2b60
[   15.012997]  ? __pfx_read_tsc+0x10/0x10
[   15.013017]  ? ktime_get_ts64+0x86/0x230
[   15.013041]  kunit_try_run_case+0x1a5/0x480
[   15.013066]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.013089]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   15.013113]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   15.013138]  ? __kthread_parkme+0x82/0x180
[   15.013158]  ? preempt_count_sub+0x50/0x80
[   15.013181]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.013205]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.013231]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   15.013300]  kthread+0x337/0x6f0
[   15.013320]  ? trace_preempt_on+0x20/0xc0
[   15.013343]  ? __pfx_kthread+0x10/0x10
[   15.013364]  ? _raw_spin_unlock_irq+0x47/0x80
[   15.013387]  ? calculate_sigpending+0x7b/0xa0
[   15.013420]  ? __pfx_kthread+0x10/0x10
[   15.013441]  ret_from_fork+0x116/0x1d0
[   15.013461]  ? __pfx_kthread+0x10/0x10
[   15.013482]  ret_from_fork_asm+0x1a/0x30
[   15.013513]  </TASK>
[   15.013523] 
[   15.024990] Allocated by task 276:
[   15.025214]  kasan_save_stack+0x45/0x70
[   15.025373]  kasan_save_track+0x18/0x40
[   15.025511]  kasan_save_alloc_info+0x3b/0x50
[   15.025671]  __kasan_kmalloc+0xb7/0xc0
[   15.025889]  __kmalloc_cache_noprof+0x189/0x420
[   15.026147]  kasan_strings+0xc0/0xe80
[   15.026467]  kunit_try_run_case+0x1a5/0x480
[   15.026696]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.026935]  kthread+0x337/0x6f0
[   15.027058]  ret_from_fork+0x116/0x1d0
[   15.027193]  ret_from_fork_asm+0x1a/0x30
[   15.027381] 
[   15.027565] Freed by task 276:
[   15.027966]  kasan_save_stack+0x45/0x70
[   15.028173]  kasan_save_track+0x18/0x40
[   15.028598]  kasan_save_free_info+0x3f/0x60
[   15.028831]  __kasan_slab_free+0x56/0x70
[   15.029025]  kfree+0x222/0x3f0
[   15.029212]  kasan_strings+0x2aa/0xe80
[   15.029473]  kunit_try_run_case+0x1a5/0x480
[   15.029688]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.029933]  kthread+0x337/0x6f0
[   15.030109]  ret_from_fork+0x116/0x1d0
[   15.030362]  ret_from_fork_asm+0x1a/0x30
[   15.030638] 
[   15.030718] The buggy address belongs to the object at ffff888102a5ed00
[   15.030718]  which belongs to the cache kmalloc-32 of size 32
[   15.031229] The buggy address is located 16 bytes inside of
[   15.031229]  freed 32-byte region [ffff888102a5ed00, ffff888102a5ed20)
[   15.031893] 
[   15.031997] The buggy address belongs to the physical page:
[   15.032207] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a5e
[   15.032449] flags: 0x200000000000000(node=0|zone=2)
[   15.032695] page_type: f5(slab)
[   15.032873] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   15.033209] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   15.033712] page dumped because: kasan: bad access detected
[   15.033883] 
[   15.033951] Memory state around the buggy address:
[   15.034101]  ffff888102a5ec00: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   15.034518]  ffff888102a5ec80: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   15.034878] >ffff888102a5ed00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   15.035188]                          ^
[   15.035635]  ffff888102a5ed80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   15.036012]  ffff888102a5ee00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   15.036294] ==================================================================