Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 1 UID: 0 PID: 20142 Comm: syz.5.2700 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:klist_remove+0x156/0x340
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 5d 03 93 f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 3e 03 93 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc9000c01f0e0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88810c2bbb00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc9000c01f1e0 R08: ffffffff90172143 R09: 1ffffffff202e428
R10: dffffc0000000000 R11: fffffbfff202e429 R12: 0000000000000000
R13: 1ffff11022897d0c R14: ffff8881144be860 R15: dffffc0000000000
FS:  00007fb422b316c0(0000) GS:ffff8882a9296000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0f229f4ba8 CR3: 000000010d146000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 device_move+0x193/0x730
 hci_conn_del_sysfs+0xb8/0x1a0
 hci_conn_del+0xc36/0x1230
 hci_abort_conn_sync+0xdd0/0x1190
 hci_disconnect_all_sync+0x1b5/0x350
 hci_suspend_sync+0x417/0xd20
 hci_suspend_dev+0x28d/0x540
 hci_suspend_notifier+0xf2/0x2f0
 notifier_call_chain+0x1ad/0x3d0
 blocking_notifier_call_chain_robust+0x85/0x100
 pm_notifier_call_chain_robust+0x2c/0x60
 snapshot_open+0x19c/0x290
 misc_open+0x2d5/0x350
 chrdev_open+0x4cd/0x5e0
 do_dentry_open+0x822/0x13a0
 vfs_open+0x3b/0x340
 path_openat+0x2e08/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb421b9cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb422b31028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fb421e15fa0 RCX: 00007fb421b9cdd9
RDX: 0000000000000000 RSI: 0000200000001ac0 RDI: ffffffffffffff9c
RBP: 00007fb421c32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb421e16038 R14: 00007fb421e15fa0 R15: 00007fff878da348
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_remove+0x156/0x340
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 5d 03 93 f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 3e 03 93 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc9000c01f0e0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88810c2bbb00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc9000c01f1e0 R08: ffffffff90172143 R09: 1ffffffff202e428
R10: dffffc0000000000 R11: fffffbfff202e429 R12: 0000000000000000
R13: 1ffff11022897d0c R14: ffff8881144be860 R15: dffffc0000000000
FS:  00007fb422b316c0(0000) GS:ffff8882a9296000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe67c6e3ff8 CR3: 000000010d146000 CR4: 00000000000006f0
