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: 8674 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 7d 8a 6e 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 5e 8a 6e f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90004e67880 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff888170be9dc0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90004e67980 R08: ffffffff903d1f63 R09: 1ffffffff207a3ec
R10: dffffc0000000000 R11: fffffbfff207a3ed R12: 0000000000000000
R13: 1ffff1102d54488c R14: ffff88816aa24460 R15: dffffc0000000000
FS:  000055558791d500(0000) GS:ffff88818d959000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1473627028 CR3: 00000000217ce000 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: 0033:0x7f2ddeb9e159
Code: Unable to access opcode bytes at 0x7f2ddeb9e12f.
RSP: 002b:00007ffebf2a6d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f2ddec3452d RCX: 00007f2ddeb9e159
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000016 R08: 0000000000000000 R09: 00007f2ddec344bb
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffebf2a8030
R13: 00007f2ddec344bb R14: 000055558791d4e8 R15: 00007ffebf2aa1f0
 </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 7d 8a 6e 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 5e 8a 6e f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90004e67880 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff888170be9dc0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90004e67980 R08: ffffffff903d1f63 R09: 1ffffffff207a3ec
R10: dffffc0000000000 R11: fffffbfff207a3ed R12: 0000000000000000
R13: 1ffff1102d54488c R14: ffff88816aa24460 R15: dffffc0000000000
FS:  000055558791d500(0000) GS:ffff8882a8f59000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdbe211500 CR3: 000000016a1a0000 CR4: 00000000000006f0
