Bluetooth: Unexpected start frame (len 12)
Bluetooth: hci6: ACL packet for unknown connection handle 0
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BUG: KASAN: use-after-free in __lock_acquire+0x413f/0x5e90
Read of size 8 at addr ffff888016de4278 by task syz-executor/34300

CPU: 0 PID: 34300 Comm: syz-executor Not tainted 6.2.0-rc4-next-20230119 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8f/0xb7
 print_report+0x175/0x478
 kasan_report+0xc0/0x100
 __lock_acquire+0x413f/0x5e90
 lock_acquire.part.0+0x120/0x340
 _raw_spin_lock_irq+0x36/0x50
 kmemleak_scan+0x1a0/0x1670
 kmemleak_write+0x58e/0x6a0
 full_proxy_write+0x121/0x190
 vfs_write+0x2cf/0xdd0
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7fd614bca5c3
Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007fff81d15e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fff81d16498 RCX: 00007fd614bca5c3
RDX: 0000000000000004 RSI: 00007fd614c80ed9 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000a4c R09: 00007fff81d7b080
R10: 00007fff81d7b090 R11: 0000000000000246 R12: 00000000fffffff6
R13: 00007fff81d17ef1 R14: 0000000000000000 R15: 0000000000283a1a
 </TASK>

Allocated by task 34299:
 kasan_save_stack+0x22/0x50
 kasan_set_track+0x25/0x30
 __kasan_slab_alloc+0x59/0x70
 kmem_cache_alloc+0x172/0x300
 __create_object+0x3d/0xc00
 kmem_cache_alloc+0x204/0x300
 __alloc_file+0x21/0x240
 alloc_empty_file+0x71/0x170
 path_openat+0xd9/0x2a50
 do_filp_open+0x1ba/0x410
 do_sys_openat2+0x171/0x4c0
 __x64_sys_openat+0x143/0x200
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc

Freed by task 19:
 kasan_save_stack+0x22/0x50
 kasan_set_track+0x25/0x30
 kasan_save_free_info+0x2e/0x50
 __kasan_slab_free+0x10a/0x190
 kmem_cache_free+0xff/0x510
 rcu_core+0x811/0x1ab0
 __do_softirq+0x274/0x8ff

Last potentially related work creation:
 kasan_save_stack+0x22/0x50
 __kasan_record_aux_stack+0x95/0xb0
 __call_rcu_common.constprop.0+0x6a/0xa00
 kmem_cache_free+0xb9/0x510
 rcu_core+0x811/0x1ab0
 __do_softirq+0x274/0x8ff

Second to last potentially related work creation:
 kasan_save_stack+0x22/0x50
 __kasan_record_aux_stack+0x95/0xb0
 __call_rcu_common.constprop.0+0x6a/0xa00
 kmem_cache_free+0xb9/0x510
 putname+0x102/0x140
 do_sys_openat2+0x157/0x4c0
 __x64_sys_openat+0x143/0x200
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc

The buggy address belongs to the object at ffff888016de4260
 which belongs to the cache kmemleak_object of size 240
The buggy address is located 24 bytes inside of
 240-byte region [ffff888016de4260, ffff888016de4350)

The buggy address belongs to the physical page:
page:000000001e76182e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16de4
anon flags: 0x100000000000200(slab|node=0|zone=1)
raw: 0100000000000200 ffff88800844f780 ffffea00003a0fc0 dead000000000005
raw: 0000000000000000 00000000000d000d 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888016de4100: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb
 ffff888016de4180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888016de4200: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb
                                                                ^
 ffff888016de4280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888016de4300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc
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