[   14.265597] ==================================================================
[   14.265968] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   14.266264] Read of size 1 at addr ffff8881026c3d90 by task kunit_try_catch/276
[   14.266568] 
[   14.266728] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc6 #1 PREEMPT(voluntary) 
[   14.266771] Tainted: [B]=BAD_PAGE, [N]=TEST
[   14.266782] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   14.266804] Call Trace:
[   14.266821]  <TASK>
[   14.266839]  dump_stack_lvl+0x73/0xb0
[   14.266867]  print_report+0xd1/0x610
[   14.266888]  ? __virt_addr_valid+0x1db/0x2d0
[   14.266910]  ? kasan_strings+0xcbc/0xe80
[   14.266931]  ? kasan_complete_mode_report_info+0x64/0x200
[   14.266953]  ? kasan_strings+0xcbc/0xe80
[   14.267189]  kasan_report+0x141/0x180
[   14.267213]  ? kasan_strings+0xcbc/0xe80
[   14.267239]  __asan_report_load1_noabort+0x18/0x20
[   14.267264]  kasan_strings+0xcbc/0xe80
[   14.267283]  ? trace_hardirqs_on+0x37/0xe0
[   14.267307]  ? __pfx_kasan_strings+0x10/0x10
[   14.267326]  ? finish_task_switch.isra.0+0x153/0x700
[   14.267349]  ? __switch_to+0x47/0xf50
[   14.267375]  ? __schedule+0x10cc/0x2b60
[   14.267397]  ? __pfx_read_tsc+0x10/0x10
[   14.267417]  ? ktime_get_ts64+0x86/0x230
[   14.267441]  kunit_try_run_case+0x1a5/0x480
[   14.267465]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.267487]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   14.267510]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   14.267534]  ? __kthread_parkme+0x82/0x180
[   14.267553]  ? preempt_count_sub+0x50/0x80
[   14.267576]  ? __pfx_kunit_try_run_case+0x10/0x10
[   14.267599]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.267622]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   14.267646]  kthread+0x337/0x6f0
[   14.267665]  ? trace_preempt_on+0x20/0xc0
[   14.267685]  ? __pfx_kthread+0x10/0x10
[   14.267705]  ? _raw_spin_unlock_irq+0x47/0x80
[   14.267727]  ? calculate_sigpending+0x7b/0xa0
[   14.267751]  ? __pfx_kthread+0x10/0x10
[   14.267772]  ret_from_fork+0x116/0x1d0
[   14.267789]  ? __pfx_kthread+0x10/0x10
[   14.267950]  ret_from_fork_asm+0x1a/0x30
[   14.267987]  </TASK>
[   14.267997] 
[   14.275340] Allocated by task 276:
[   14.275524]  kasan_save_stack+0x45/0x70
[   14.275957]  kasan_save_track+0x18/0x40
[   14.276128]  kasan_save_alloc_info+0x3b/0x50
[   14.276325]  __kasan_kmalloc+0xb7/0xc0
[   14.276518]  __kmalloc_cache_noprof+0x189/0x420
[   14.276737]  kasan_strings+0xc0/0xe80
[   14.276869]  kunit_try_run_case+0x1a5/0x480
[   14.277016]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.277201]  kthread+0x337/0x6f0
[   14.277435]  ret_from_fork+0x116/0x1d0
[   14.277625]  ret_from_fork_asm+0x1a/0x30
[   14.277862] 
[   14.277962] Freed by task 276:
[   14.278136]  kasan_save_stack+0x45/0x70
[   14.278338]  kasan_save_track+0x18/0x40
[   14.278529]  kasan_save_free_info+0x3f/0x60
[   14.278725]  __kasan_slab_free+0x56/0x70
[   14.278906]  kfree+0x222/0x3f0
[   14.279062]  kasan_strings+0x2aa/0xe80
[   14.279229]  kunit_try_run_case+0x1a5/0x480
[   14.279376]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.279553]  kthread+0x337/0x6f0
[   14.279802]  ret_from_fork+0x116/0x1d0
[   14.279985]  ret_from_fork_asm+0x1a/0x30
[   14.280453] 
[   14.280558] The buggy address belongs to the object at ffff8881026c3d80
[   14.280558]  which belongs to the cache kmalloc-32 of size 32
[   14.281210] The buggy address is located 16 bytes inside of
[   14.281210]  freed 32-byte region [ffff8881026c3d80, ffff8881026c3da0)
[   14.281712] 
[   14.281788] The buggy address belongs to the physical page:
[   14.282101] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1026c3
[   14.282419] flags: 0x200000000000000(node=0|zone=2)
[   14.282680] page_type: f5(slab)
[   14.282863] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   14.283142] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   14.283378] page dumped because: kasan: bad access detected
[   14.283557] 
[   14.283701] Memory state around the buggy address:
[   14.283923]  ffff8881026c3c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.284425]  ffff8881026c3d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.284984] >ffff8881026c3d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.285258]                          ^
[   14.285443]  ffff8881026c3e00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   14.285743]  ffff8881026c3e80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.286175] ==================================================================