Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 0 UID: 0 PID: 25823 Comm: syz-executor 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 8d c8 6c 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 6e c8 6c f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90004d3f880 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8881babd8000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90004d3f980 R08: ffffffff903d5a63 R09: 1ffffffff207ab4c
R10: dffffc0000000000 R11: fffffbfff207ab4d R12: 0000000000000000
R13: 1ffff11022571d8c R14: ffff888112b8ec60 R15: dffffc0000000000
FS:  000055556b313500(0000) GS:ffff88818d94d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb087a27dac CR3: 00000001b1eac000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 device_move+0x18e/0x720
 hci_conn_del_sysfs+0xb8/0x1a0
 hci_conn_del+0xc3d/0x1200
 hci_conn_hash_flush+0x189/0x260
 hci_dev_close_sync+0x7fc/0x10a0
 hci_unregister_dev+0x232/0x5b0
 vhci_release+0x16d/0x1c0
 __fput+0x418/0xa50
 task_work_run+0x1d9/0x270
 do_exit+0x73a/0x2360
 do_group_exit+0x22d/0x2f0
 __x64_sys_exit_group+0x3f/0x40
 x64_sys_call+0x221a/0x2240
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f90bf99e019
Code: Unable to access opcode bytes at 0x7f90bf99dfef.
RSP: 002b:00007ffeec5f8e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f90bfa344ce RCX: 00007f90bf99e019
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000010 R08: 0000000000000000 R09: 00007f90bfa3445c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffeec5fa110
R13: 00007f90bfa3445c R14: 000055556b3134e8 R15: 00007ffeec5fb1e0
 </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 8d c8 6c 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 6e c8 6c f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90004d3f880 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8881babd8000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90004d3f980 R08: ffffffff903d5a63 R09: 1ffffffff207ab4c
R10: dffffc0000000000 R11: fffffbfff207ab4d R12: 0000000000000000
R13: 1ffff11022571d8c R14: ffff888112b8ec60 R15: dffffc0000000000
FS:  000055556b313500(0000) GS:ffff8882a8f4d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005578ceea1000 CR3: 000000000e946000 CR4: 00000000000006f0
