[   13.196640] ==================================================================
[   13.197412] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360
[   13.197829] Write of size 33 at addr ffff888102b07180 by task kunit_try_catch/203
[   13.198188] 
[   13.198436] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[   13.198483] Tainted: [B]=BAD_PAGE, [N]=TEST
[   13.198494] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   13.198517] Call Trace:
[   13.198530]  <TASK>
[   13.198547]  dump_stack_lvl+0x73/0xb0
[   13.198579]  print_report+0xd1/0x650
[   13.198601]  ? __virt_addr_valid+0x1db/0x2d0
[   13.198696]  ? kmalloc_uaf_memset+0x1a3/0x360
[   13.198730]  ? kasan_complete_mode_report_info+0x64/0x200
[   13.198756]  ? kmalloc_uaf_memset+0x1a3/0x360
[   13.198777]  kasan_report+0x141/0x180
[   13.198798]  ? kmalloc_uaf_memset+0x1a3/0x360
[   13.198824]  kasan_check_range+0x10c/0x1c0
[   13.198846]  __asan_memset+0x27/0x50
[   13.198865]  kmalloc_uaf_memset+0x1a3/0x360
[   13.198885]  ? __pfx_kmalloc_uaf_memset+0x10/0x10
[   13.198906]  ? __schedule+0x10cc/0x2b60
[   13.198996]  ? __pfx_read_tsc+0x10/0x10
[   13.199029]  ? ktime_get_ts64+0x86/0x230
[   13.199111]  kunit_try_run_case+0x1a5/0x480
[   13.199140]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.199161]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   13.199184]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   13.199206]  ? __kthread_parkme+0x82/0x180
[   13.199226]  ? preempt_count_sub+0x50/0x80
[   13.199250]  ? __pfx_kunit_try_run_case+0x10/0x10
[   13.199273]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.199295]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   13.199317]  kthread+0x337/0x6f0
[   13.199336]  ? trace_preempt_on+0x20/0xc0
[   13.199359]  ? __pfx_kthread+0x10/0x10
[   13.199378]  ? _raw_spin_unlock_irq+0x47/0x80
[   13.199398]  ? calculate_sigpending+0x7b/0xa0
[   13.199422]  ? __pfx_kthread+0x10/0x10
[   13.199442]  ret_from_fork+0x116/0x1d0
[   13.199460]  ? __pfx_kthread+0x10/0x10
[   13.199479]  ret_from_fork_asm+0x1a/0x30
[   13.199511]  </TASK>
[   13.199522] 
[   13.211513] Allocated by task 203:
[   13.211918]  kasan_save_stack+0x45/0x70
[   13.212364]  kasan_save_track+0x18/0x40
[   13.212903]  kasan_save_alloc_info+0x3b/0x50
[   13.213375]  __kasan_kmalloc+0xb7/0xc0
[   13.213917]  __kmalloc_cache_noprof+0x189/0x420
[   13.214610]  kmalloc_uaf_memset+0xa9/0x360
[   13.215028]  kunit_try_run_case+0x1a5/0x480
[   13.215524]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.215979]  kthread+0x337/0x6f0
[   13.216419]  ret_from_fork+0x116/0x1d0
[   13.216929]  ret_from_fork_asm+0x1a/0x30
[   13.217557] 
[   13.217725] Freed by task 203:
[   13.218037]  kasan_save_stack+0x45/0x70
[   13.218495]  kasan_save_track+0x18/0x40
[   13.218910]  kasan_save_free_info+0x3f/0x60
[   13.219568]  __kasan_slab_free+0x56/0x70
[   13.219942]  kfree+0x222/0x3f0
[   13.220403]  kmalloc_uaf_memset+0x12b/0x360
[   13.220706]  kunit_try_run_case+0x1a5/0x480
[   13.221341]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   13.221699]  kthread+0x337/0x6f0
[   13.221864]  ret_from_fork+0x116/0x1d0
[   13.222029]  ret_from_fork_asm+0x1a/0x30
[   13.222181] 
[   13.222255] The buggy address belongs to the object at ffff888102b07180
[   13.222255]  which belongs to the cache kmalloc-64 of size 64
[   13.223115] The buggy address is located 0 bytes inside of
[   13.223115]  freed 64-byte region [ffff888102b07180, ffff888102b071c0)
[   13.223838] 
[   13.224049] The buggy address belongs to the physical page:
[   13.224638] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b07
[   13.224942] flags: 0x200000000000000(node=0|zone=2)
[   13.225369] page_type: f5(slab)
[   13.225547] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000
[   13.225919] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   13.226398] page dumped because: kasan: bad access detected
[   13.226744] 
[   13.226827] Memory state around the buggy address:
[   13.227108]  ffff888102b07080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   13.227420]  ffff888102b07100: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   13.227635] >ffff888102b07180: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   13.227974]                    ^
[   13.228150]  ffff888102b07200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.228461]  ffff888102b07280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   13.228871] ==================================================================