[   13.990843] ==================================================================
[   13.991173] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0
[   13.991472] Read of size 1 at addr ffff888103994910 by task kunit_try_catch/276
[   13.991771] 
[   13.991891] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   13.991938] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.991950] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.991972] Call Trace:
[   13.991992]  <TASK>
[   13.992015]  dump_stack_lvl+0x73/0xb0
[   13.992042]  print_report+0xd1/0x650
[   13.992066]  ? __virt_addr_valid+0x1db/0x2d0
[   13.992089]  ? strlen+0x8f/0xb0
[   13.992105]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.992128]  ? strlen+0x8f/0xb0
[   13.992144]  kasan_report+0x141/0x180
[   13.992165]  ? strlen+0x8f/0xb0
[   13.992187]  __asan_report_load1_noabort+0x18/0x20
[   13.992210]  strlen+0x8f/0xb0
[   13.992238]  kasan_strings+0x57b/0xe80
[   13.992322]  ? trace_hardirqs_on+0x37/0xe0
[   13.992349]  ? __pfx_kasan_strings+0x10/0x10
[   13.992369]  ? finish_task_switch.isra.0+0x153/0x700
[   13.992390]  ? __switch_to+0x47/0xf50
[   13.992416]  ? __schedule+0x10cc/0x2b60
[   13.992437]  ? __pfx_read_tsc+0x10/0x10
[   13.992458]  ? ktime_get_ts64+0x86/0x230
[   13.992481]  kunit_try_run_case+0x1a5/0x480
[   13.992506]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.992527]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.992550]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.992572]  ? __kthread_parkme+0x82/0x180
[   13.992593]  ? preempt_count_sub+0x50/0x80
[   13.992615]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.992638]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.992660]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.992682]  kthread+0x337/0x6f0
[   13.992701]  ? trace_preempt_on+0x20/0xc0
[   13.992722]  ? __pfx_kthread+0x10/0x10
[   13.992741]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.992762]  ? calculate_sigpending+0x7b/0xa0
[   13.992797]  ? __pfx_kthread+0x10/0x10
[   13.992818]  ret_from_fork+0x116/0x1d0
[   13.992835]  ? __pfx_kthread+0x10/0x10
[   13.992856]  ret_from_fork_asm+0x1a/0x30
[   13.992886]  </TASK>
[   13.992897] 
[   14.001476] Allocated by task 276:
[   14.001654]  kasan_save_stack+0x45/0x70
[   14.001857]  kasan_save_track+0x18/0x40
[   14.002059]  kasan_save_alloc_info+0x3b/0x50
[   14.002271]  __kasan_kmalloc+0xb7/0xc0
[   14.002424]  __kmalloc_cache_noprof+0x189/0x420
[   14.002639]  kasan_strings+0xc0/0xe80
[   14.002825]  kunit_try_run_case+0x1a5/0x480
[   14.002997]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.003228]  kthread+0x337/0x6f0
[   14.003417]  ret_from_fork+0x116/0x1d0
[   14.003589]  ret_from_fork_asm+0x1a/0x30
[   14.003751] 
[   14.003847] Freed by task 276:
[   14.004003]  kasan_save_stack+0x45/0x70
[   14.004170]  kasan_save_track+0x18/0x40
[   14.004387]  kasan_save_free_info+0x3f/0x60
[   14.004561]  __kasan_slab_free+0x56/0x70
[   14.004734]  kfree+0x222/0x3f0
[   14.004908]  kasan_strings+0x2aa/0xe80
[   14.005053]  kunit_try_run_case+0x1a5/0x480
[   14.005198]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   14.005387]  kthread+0x337/0x6f0
[   14.005509]  ret_from_fork+0x116/0x1d0
[   14.005642]  ret_from_fork_asm+0x1a/0x30
[   14.005839] 
[   14.006013] The buggy address belongs to the object at ffff888103994900
[   14.006013]  which belongs to the cache kmalloc-32 of size 32
[   14.006763] The buggy address is located 16 bytes inside of
[   14.006763]  freed 32-byte region [ffff888103994900, ffff888103994920)
[   14.007111] 
[   14.007185] The buggy address belongs to the physical page:
[   14.008165] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103994
[   14.008642] flags: 0x200000000000000(node=0|zone=2)
[   14.008911] page_type: f5(slab)
[   14.009081] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   14.009654] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   14.009969] page dumped because: kasan: bad access detected
[   14.010181] 
[   14.010349] Memory state around the buggy address:
[   14.010522]  ffff888103994800: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   14.010829]  ffff888103994880: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc
[   14.011114] >ffff888103994900: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.011473]                          ^
[   14.011643]  ffff888103994980: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc
[   14.011858]  ffff888103994a00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   14.012071] ==================================================================