[   11.767236] ==================================================================
[   11.767680] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360
[   11.768210] Write of size 33 at addr ffff888102590400 by task kunit_try_catch/203
[   11.768529] 
[   11.768671] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc4 #1 PREEMPT(voluntary) 
[   11.768718] Tainted: [B]=BAD_PAGE, [N]=TEST
[   11.768730] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   11.768752] Call Trace:
[   11.768766]  <TASK>
[   11.768783]  dump_stack_lvl+0x73/0xb0
[   11.768815]  print_report+0xd1/0x650
[   11.768839]  ? __virt_addr_valid+0x1db/0x2d0
[   11.768861]  ? kmalloc_uaf_memset+0x1a3/0x360
[   11.768881]  ? kasan_complete_mode_report_info+0x64/0x200
[   11.768901]  ? kmalloc_uaf_memset+0x1a3/0x360
[   11.768921]  kasan_report+0x141/0x180
[   11.768942]  ? kmalloc_uaf_memset+0x1a3/0x360
[   11.768966]  kasan_check_range+0x10c/0x1c0
[   11.768988]  __asan_memset+0x27/0x50
[   11.769007]  kmalloc_uaf_memset+0x1a3/0x360
[   11.769027]  ? __pfx_kmalloc_uaf_memset+0x10/0x10
[   11.769048]  ? __schedule+0x10cc/0x2b60
[   11.769070]  ? __pfx_read_tsc+0x10/0x10
[   11.769092]  ? ktime_get_ts64+0x86/0x230
[   11.769115]  kunit_try_run_case+0x1a5/0x480
[   11.769139]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.769160]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   11.769183]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   11.769204]  ? __kthread_parkme+0x82/0x180
[   11.769225]  ? preempt_count_sub+0x50/0x80
[   11.769248]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.769270]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.769292]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   11.769314]  kthread+0x337/0x6f0
[   11.769332]  ? trace_preempt_on+0x20/0xc0
[   11.769355]  ? __pfx_kthread+0x10/0x10
[   11.769387]  ? _raw_spin_unlock_irq+0x47/0x80
[   11.769407]  ? calculate_sigpending+0x7b/0xa0
[   11.769430]  ? __pfx_kthread+0x10/0x10
[   11.769449]  ret_from_fork+0x116/0x1d0
[   11.769480]  ? __pfx_kthread+0x10/0x10
[   11.769499]  ret_from_fork_asm+0x1a/0x30
[   11.769530]  </TASK>
[   11.769540] 
[   11.777350] Allocated by task 203:
[   11.777586]  kasan_save_stack+0x45/0x70
[   11.777768]  kasan_save_track+0x18/0x40
[   11.777942]  kasan_save_alloc_info+0x3b/0x50
[   11.778164]  __kasan_kmalloc+0xb7/0xc0
[   11.778360]  __kmalloc_cache_noprof+0x189/0x420
[   11.778597]  kmalloc_uaf_memset+0xa9/0x360
[   11.778806]  kunit_try_run_case+0x1a5/0x480
[   11.779039]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.779249]  kthread+0x337/0x6f0
[   11.779412]  ret_from_fork+0x116/0x1d0
[   11.779595]  ret_from_fork_asm+0x1a/0x30
[   11.779745] 
[   11.779815] Freed by task 203:
[   11.780051]  kasan_save_stack+0x45/0x70
[   11.780248]  kasan_save_track+0x18/0x40
[   11.780459]  kasan_save_free_info+0x3f/0x60
[   11.780618]  __kasan_slab_free+0x56/0x70
[   11.780755]  kfree+0x222/0x3f0
[   11.780872]  kmalloc_uaf_memset+0x12b/0x360
[   11.781014]  kunit_try_run_case+0x1a5/0x480
[   11.781411]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.781774]  kthread+0x337/0x6f0
[   11.781941]  ret_from_fork+0x116/0x1d0
[   11.782309]  ret_from_fork_asm+0x1a/0x30
[   11.782521] 
[   11.782610] The buggy address belongs to the object at ffff888102590400
[   11.782610]  which belongs to the cache kmalloc-64 of size 64
[   11.783018] The buggy address is located 0 bytes inside of
[   11.783018]  freed 64-byte region [ffff888102590400, ffff888102590440)
[   11.783792] 
[   11.783898] The buggy address belongs to the physical page:
[   11.784108] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102590
[   11.784359] flags: 0x200000000000000(node=0|zone=2)
[   11.784789] page_type: f5(slab)
[   11.785018] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000
[   11.785356] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   11.785812] page dumped because: kasan: bad access detected
[   11.786113] 
[   11.786207] Memory state around the buggy address:
[   11.786389]  ffff888102590300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   11.786624]  ffff888102590380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   11.787216] >ffff888102590400: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   11.787530]                    ^
[   11.787777]  ffff888102590480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.788115]  ffff888102590500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.788335] ==================================================================