[  182.515431] ==================================================================
[  182.516927] BUG: KASAN: slab-use-after-free in strrchr+0x28/0x58
[  182.518976] Read of size 1 at addr ffff0000c5f6ec10 by task kunit_try_catch/204
[  182.520242] 
[  182.520756] CPU: 1 PID: 204 Comm: kunit_try_catch Tainted: G    B            N 6.6.76-rc1 #1
[  182.523406] Hardware name: linux,dummy-virt (DT)
[  182.524594] Call trace:
[  182.525312]  dump_backtrace+0x9c/0x128
[  182.526709]  show_stack+0x20/0x38
[  182.527749]  dump_stack_lvl+0x60/0xb0
[  182.529246]  print_report+0xf8/0x5d8
[  182.530325]  kasan_report+0xc8/0x118
[  182.531427]  __asan_load1+0x60/0x70
[  182.532586]  strrchr+0x28/0x58
[  182.533737]  kasan_strings+0x104/0x478
[  182.534721]  kunit_try_run_case+0xf8/0x260
[  182.535992]  kunit_generic_run_threadfn_adapter+0x38/0x60
[  182.537462]  kthread+0x18c/0x1a8
[  182.538256]  ret_from_fork+0x10/0x20
[  182.539165] 
[  182.539682] Allocated by task 204:
[  182.541044]  kasan_save_stack+0x3c/0x68
[  182.542482]  kasan_set_track+0x2c/0x40
[  182.543690]  kasan_save_alloc_info+0x24/0x38
[  182.545326]  __kasan_kmalloc+0xd4/0xd8
[  182.546474]  kmalloc_trace+0x68/0x130
[  182.547508]  kasan_strings+0xa0/0x478
[  182.548586]  kunit_try_run_case+0xf8/0x260
[  182.549848]  kunit_generic_run_threadfn_adapter+0x38/0x60
[  182.551341]  kthread+0x18c/0x1a8
[  182.552293]  ret_from_fork+0x10/0x20
[  182.553651] 
[  182.554189] Freed by task 204:
[  182.554959]  kasan_save_stack+0x3c/0x68
[  182.555645]  kasan_set_track+0x2c/0x40
[  182.556796]  kasan_save_free_info+0x38/0x60
[  182.558181]  __kasan_slab_free+0x100/0x170
[  182.559223]  __kmem_cache_free+0x170/0x2e0
[  182.560371]  kfree+0x74/0x138
[  182.561655]  kasan_strings+0xbc/0x478
[  182.562748]  kunit_try_run_case+0xf8/0x260
[  182.563930]  kunit_generic_run_threadfn_adapter+0x38/0x60
[  182.565400]  kthread+0x18c/0x1a8
[  182.566423]  ret_from_fork+0x10/0x20
[  182.567472] 
[  182.568000] The buggy address belongs to the object at ffff0000c5f6ec00
[  182.568000]  which belongs to the cache kmalloc-32 of size 32
[  182.570415] The buggy address is located 16 bytes inside of
[  182.570415]  freed 32-byte region [ffff0000c5f6ec00, ffff0000c5f6ec20)
[  182.572911] 
[  182.573446] The buggy address belongs to the physical page:
[  182.575068] page:00000000e8269612 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105f6e
[  182.577382] flags: 0xbfffc0000000800(slab|node=0|zone=2|lastcpupid=0xffff)
[  182.578822] page_type: 0xffffffff()
[  182.579649] raw: 0bfffc0000000800 ffff0000c0001500 dead000000000122 0000000000000000
[  182.581764] raw: 0000000000000000 0000000080400040 00000001ffffffff 0000000000000000
[  182.583710] page dumped because: kasan: bad access detected
[  182.585350] 
[  182.585909] Memory state around the buggy address:
[  182.587037]  ffff0000c5f6eb00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[  182.588833]  ffff0000c5f6eb80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[  182.590613] >ffff0000c5f6ec00: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
[  182.592099]                          ^
[  182.593482]  ffff0000c5f6ec80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  182.595046]  ffff0000c5f6ed00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  182.596564] ==================================================================