[   35.656042] ==================================================================
[   35.656456] BUG: KASAN: slab-use-after-free in strlen+0x13/0x50
[   35.656969] Read of size 1 at addr ffff888102869450 by task kunit_try_catch/220
[   35.657773] 
[   35.657917] CPU: 0 PID: 220 Comm: kunit_try_catch Tainted: G    B            N 6.6.94-rc1 #1
[   35.658655] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   35.659294] Call Trace:
[   35.659599]  <TASK>
[   35.659771]  dump_stack_lvl+0x4e/0x90
[   35.660279]  print_report+0xd2/0x650
[   35.660687]  ? __virt_addr_valid+0x156/0x1e0
[   35.661109]  ? strlen+0x13/0x50
[   35.661523]  ? kasan_complete_mode_report_info+0x64/0x200
[   35.662015]  ? strlen+0x13/0x50
[   35.662222]  kasan_report+0x147/0x180
[   35.662496]  ? strlen+0x13/0x50
[   35.663046]  __asan_load1+0x66/0x70
[   35.663660]  strlen+0x13/0x50
[   35.664017]  kasan_strings+0x1dc/0x510
[   35.664267]  ? __pfx_kasan_strings+0x10/0x10
[   35.664726]  ? __schedule+0x715/0x11a0
[   35.665188]  ? ktime_get_ts64+0x118/0x140
[   35.665668]  kunit_try_run_case+0x120/0x290
[   35.666093]  ? __pfx_kunit_try_run_case+0x10/0x10
[   35.666517]  ? __kasan_check_write+0x18/0x20
[   35.667021]  ? trace_preempt_on+0x20/0xa0
[   35.667259]  ? __kthread_parkme+0x4f/0xd0
[   35.667645]  ? preempt_count_sub+0x50/0x80
[   35.667946]  ? __pfx_kunit_try_run_case+0x10/0x10
[   35.668604]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   35.669089]  kunit_generic_run_threadfn_adapter+0x33/0x50
[   35.669615]  kthread+0x19e/0x1e0
[   35.670019]  ? __pfx_kthread+0x10/0x10
[   35.670402]  ret_from_fork+0x41/0x70
[   35.670789]  ? __pfx_kthread+0x10/0x10
[   35.671177]  ret_from_fork_asm+0x1b/0x30
[   35.671642]  </TASK>
[   35.671882] 
[   35.672013] Allocated by task 220:
[   35.672184]  kasan_save_stack+0x44/0x70
[   35.672712]  kasan_set_track+0x29/0x40
[   35.673129]  kasan_save_alloc_info+0x22/0x30
[   35.673554]  __kasan_kmalloc+0xb7/0xc0
[   35.673915]  kmalloc_trace+0x4c/0xb0
[   35.674145]  kasan_strings+0x9f/0x510
[   35.674380]  kunit_try_run_case+0x120/0x290
[   35.674668]  kunit_generic_run_threadfn_adapter+0x33/0x50
[   35.675294]  kthread+0x19e/0x1e0
[   35.675672]  ret_from_fork+0x41/0x70
[   35.676145]  ret_from_fork_asm+0x1b/0x30
[   35.676501] 
[   35.676816] Freed by task 220:
[   35.677114]  kasan_save_stack+0x44/0x70
[   35.677465]  kasan_set_track+0x29/0x40
[   35.677881]  kasan_save_free_info+0x2f/0x50
[   35.678261]  ____kasan_slab_free+0x172/0x1d0
[   35.678567]  __kasan_slab_free+0x16/0x20
[   35.679093]  __kmem_cache_free+0x190/0x310
[   35.679545]  kfree+0x7c/0x120
[   35.679871]  kasan_strings+0xc3/0x510
[   35.680167]  kunit_try_run_case+0x120/0x290
[   35.680461]  kunit_generic_run_threadfn_adapter+0x33/0x50
[   35.681043]  kthread+0x19e/0x1e0
[   35.681436]  ret_from_fork+0x41/0x70
[   35.681799]  ret_from_fork_asm+0x1b/0x30
[   35.682185] 
[   35.682330] The buggy address belongs to the object at ffff888102869440
[   35.682330]  which belongs to the cache kmalloc-32 of size 32
[   35.683045] The buggy address is located 16 bytes inside of
[   35.683045]  freed 32-byte region [ffff888102869440, ffff888102869460)
[   35.684124] 
[   35.684473] The buggy address belongs to the physical page:
[   35.685064] page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102869
[   35.685798] flags: 0x200000000000800(slab|node=0|zone=2)
[   35.686297] page_type: 0xffffffff()
[   35.686732] raw: 0200000000000800 ffff888100041500 dead000000000122 0000000000000000
[   35.687319] raw: 0000000000000000 0000000080400040 00000001ffffffff 0000000000000000
[   35.687929] page dumped because: kasan: bad access detected
[   35.688186] 
[   35.688312] Memory state around the buggy address:
[   35.688812]  ffff888102869300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   35.689327]  ffff888102869380: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   35.690143] >ffff888102869400: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   35.690774]                                                  ^
[   35.691607]  ffff888102869480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   35.692203]  ffff888102869500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   35.692827] ==================================================================