[  182.426124] ==================================================================
[  182.427983] BUG: KASAN: slab-use-after-free in strchr+0x20/0x80
[  182.429478] Read of size 1 at addr ffff0000c5f6ec10 by task kunit_try_catch/204
[  182.431791] 
[  182.432267] CPU: 1 PID: 204 Comm: kunit_try_catch Tainted: G    B            N 6.6.76-rc1 #1
[  182.434660] Hardware name: linux,dummy-virt (DT)
[  182.435793] Call trace:
[  182.436410]  dump_backtrace+0x9c/0x128
[  182.437826]  show_stack+0x20/0x38
[  182.438862]  dump_stack_lvl+0x60/0xb0
[  182.440025]  print_report+0xf8/0x5d8
[  182.441184]  kasan_report+0xc8/0x118
[  182.442507]  __asan_load1+0x60/0x70
[  182.443649]  strchr+0x20/0x80
[  182.444632]  kasan_strings+0xdc/0x478
[  182.445970]  kunit_try_run_case+0xf8/0x260
[  182.447195]  kunit_generic_run_threadfn_adapter+0x38/0x60
[  182.448712]  kthread+0x18c/0x1a8
[  182.449807]  ret_from_fork+0x10/0x20
[  182.451015] 
[  182.451620] Allocated by task 204:
[  182.452504]  kasan_save_stack+0x3c/0x68
[  182.453826]  kasan_set_track+0x2c/0x40
[  182.454641]  kasan_save_alloc_info+0x24/0x38
[  182.456060]  __kasan_kmalloc+0xd4/0xd8
[  182.457247]  kmalloc_trace+0x68/0x130
[  182.458639]  kasan_strings+0xa0/0x478
[  182.459739]  kunit_try_run_case+0xf8/0x260
[  182.460948]  kunit_generic_run_threadfn_adapter+0x38/0x60
[  182.462609]  kthread+0x18c/0x1a8
[  182.463799]  ret_from_fork+0x10/0x20
[  182.464904] 
[  182.465392] Freed by task 204:
[  182.466288]  kasan_save_stack+0x3c/0x68
[  182.467544]  kasan_set_track+0x2c/0x40
[  182.468845]  kasan_save_free_info+0x38/0x60
[  182.470187]  __kasan_slab_free+0x100/0x170
[  182.471246]  __kmem_cache_free+0x170/0x2e0
[  182.472801]  kfree+0x74/0x138
[  182.474436]  kasan_strings+0xbc/0x478
[  182.475620]  kunit_try_run_case+0xf8/0x260
[  182.476829]  kunit_generic_run_threadfn_adapter+0x38/0x60
[  182.478483]  kthread+0x18c/0x1a8
[  182.479507]  ret_from_fork+0x10/0x20
[  182.480765] 
[  182.481611] The buggy address belongs to the object at ffff0000c5f6ec00
[  182.481611]  which belongs to the cache kmalloc-32 of size 32
[  182.484060] The buggy address is located 16 bytes inside of
[  182.484060]  freed 32-byte region [ffff0000c5f6ec00, ffff0000c5f6ec20)
[  182.486856] 
[  182.487347] The buggy address belongs to the physical page:
[  182.488917] page:00000000e8269612 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105f6e
[  182.491284] flags: 0xbfffc0000000800(slab|node=0|zone=2|lastcpupid=0xffff)
[  182.493211] page_type: 0xffffffff()
[  182.494809] raw: 0bfffc0000000800 ffff0000c0001500 dead000000000122 0000000000000000
[  182.496550] raw: 0000000000000000 0000000080400040 00000001ffffffff 0000000000000000
[  182.498315] page dumped because: kasan: bad access detected
[  182.499562] 
[  182.500276] Memory state around the buggy address:
[  182.501627]  ffff0000c5f6eb00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[  182.503285]  ffff0000c5f6eb80: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc
[  182.505018] >ffff0000c5f6ec00: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
[  182.506741]                          ^
[  182.507838]  ffff0000c5f6ec80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  182.509474]  ffff0000c5f6ed00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  182.511690] ==================================================================