overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
9pnet: Could not find request transport: xen
BUG: unable to handle kernel paging request at ffffffff86793788
PGD 9e6e067 P4D 9e6e067 PUD 9e6f063 PMD 66001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 30515 Comm: kworker/1:4 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Workqueue: events l2cap_chan_timeout
RIP: 0010:arch_atomic_inc arch/x86/include/asm/atomic.h:97 [inline]
RIP: 0010:atomic_inc include/asm-generic/atomic-instrumented.h:110 [inline]
RIP: 0010:__lock_acquire+0x256/0x3ff0 kernel/locking/lockdep.c:3308
Code: 00 49 8b 44 c6 08 48 85 c0 0f 84 38 ff ff ff 48 8d b8 38 01 00 00 be 04 00 00 00 48 89 44 24 10 e8 bf 54 4d 00 48 8b 44 24 10 <f0> ff 80 38 01 00 00 49 8d b5 80 08 00 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff88805a2e7930 EFLAGS: 00010046
RAX: ffffffff86793650 RBX: 0000000000000000 RCX: ffffffff814afa31
RDX: fffffbfff0cf26f2 RSI: 0000000000000004 RDI: ffffffff86793788
RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff0cf26f1
R10: ffffffff8679378b R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808ec94180 R14: ffff88808f3746e0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff86793788 CR3: 00000000953c4000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:168
 spin_lock_bh include/linux/spinlock.h:334 [inline]
 lock_sock_nested+0x3b/0x110 net/core/sock.c:2884
 l2cap_sock_teardown_cb+0xa0/0x6d0 net/bluetooth/l2cap_sock.c:1348
 l2cap_chan_del+0xbc/0xa50 net/bluetooth/l2cap_core.c:603
 l2cap_chan_close+0x1b5/0x950 net/bluetooth/l2cap_core.c:761
 l2cap_chan_timeout+0x17e/0x2f0 net/bluetooth/l2cap_core.c:430
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
CR2: ffffffff86793788
---[ end trace e10f6ae4b43e9781 ]---
RIP: 0010:arch_atomic_inc arch/x86/include/asm/atomic.h:97 [inline]
RIP: 0010:atomic_inc include/asm-generic/atomic-instrumented.h:110 [inline]
RIP: 0010:__lock_acquire+0x256/0x3ff0 kernel/locking/lockdep.c:3308
Code: 00 49 8b 44 c6 08 48 85 c0 0f 84 38 ff ff ff 48 8d b8 38 01 00 00 be 04 00 00 00 48 89 44 24 10 e8 bf 54 4d 00 48 8b 44 24 10 <f0> ff 80 38 01 00 00 49 8d b5 80 08 00 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff88805a2e7930 EFLAGS: 00010046
RAX: ffffffff86793650 RBX: 0000000000000000 RCX: ffffffff814afa31
RDX: fffffbfff0cf26f2 RSI: 0000000000000004 RDI: ffffffff86793788
RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff0cf26f1
R10: ffffffff8679378b R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808ec94180 R14: ffff88808f3746e0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff86793788 CR3: 00000000953c4000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	49 8b 44 c6 08       	mov    0x8(%r14,%rax,8),%rax
   5:	48 85 c0             	test   %rax,%rax
   8:	0f 84 38 ff ff ff    	je     0xffffff46
   e:	48 8d b8 38 01 00 00 	lea    0x138(%rax),%rdi
  15:	be 04 00 00 00       	mov    $0x4,%esi
  1a:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  1f:	e8 bf 54 4d 00       	callq  0x4d54e3
  24:	48 8b 44 24 10       	mov    0x10(%rsp),%rax
* 29:	f0 ff 80 38 01 00 00 	lock incl 0x138(%rax) <-- trapping instruction
  30:	49 8d b5 80 08 00 00 	lea    0x880(%r13),%rsi
  37:	48                   	rex.W
  38:	ba 00 00 00 00       	mov    $0x0,%edx
  3d:	00 fc                	add    %bh,%ah