Oops: general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]
CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events l2cap_info_timeout
RIP: 0010:do_raw_spin_lock+0x78/0x290
Code: fe 9d 81 48 8d 4c 24 20 48 c1 e9 03 48 b8 f1 f1 f1 f1 04 f3 f3 f3 48 89 4c 24 18 4a 89 04 39 4c 8d 77 04 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 9f 01 00 00 41 8b 06 3d ad 4e ad de 0f
RSP: 0018:ffffc900000d77a0 EFLAGS: 00010203
RAX: 0000000000000038 RBX: 00000000000001c0 RCX: 1ffff9200001aef8
RDX: 0000000000000000 RSI: ffffffff8be33660 RDI: 00000000000001c0
RBP: ffffc900000d7858 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff8a831ef0 R12: dffffc0000000000
R13: dffffc0000000000 R14: 00000000000001c4 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c1ba3cfc8 CR3: 0000000112060000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_sock_nested+0x6a/0x100
 l2cap_sock_ready_cb+0x45/0x140
 l2cap_conn_start+0x76d/0xe50
 l2cap_info_timeout+0x68/0xa0
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_raw_spin_lock+0x78/0x290
Code: fe 9d 81 48 8d 4c 24 20 48 c1 e9 03 48 b8 f1 f1 f1 f1 04 f3 f3 f3 48 89 4c 24 18 4a 89 04 39 4c 8d 77 04 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 9f 01 00 00 41 8b 06 3d ad 4e ad de 0f
RSP: 0018:ffffc900000d77a0 EFLAGS: 00010203
RAX: 0000000000000038 RBX: 00000000000001c0 RCX: 1ffff9200001aef8
RDX: 0000000000000000 RSI: ffffffff8be33660 RDI: 00000000000001c0
RBP: ffffc900000d7858 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff8a831ef0 R12: dffffc0000000000
R13: dffffc0000000000 R14: 00000000000001c4 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c1ba3cfc8 CR3: 0000000112060000 CR4: 00000000000006f0
