A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check.
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: 13568 Comm: syz.1.2090 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
RIP: 0010:klist_remove+0x14a/0x340
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 99 d9 b1 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 7a d9 b1 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90002e3f5e0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8880266dd640 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90002e3f6e0 R08: ffffffff8f8a0fe3 R09: 1ffffffff1f141fc
R10: dffffc0000000000 R11: fffffbfff1f141fd R12: 0000000000000000
R13: 1ffff110069a1c0c R14: ffff888034d0e060 R15: dffffc0000000000
FS:  00007f63d6ca26c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63d5d74c40 CR3: 000000000df36000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 device_move+0x193/0x700
 hci_conn_del_sysfs+0xb8/0x170
 hci_conn_del+0xc33/0x11b0
 hci_conn_hash_flush+0x191/0x230
 hci_dev_close_sync+0xaef/0x1330
 hci_unregister_dev+0x21a/0x510
 vhci_release+0x152/0x1a0
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 do_exit+0x6b5/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f63d5d8ebe9
Code: Unable to access opcode bytes at 0x7f63d5d8ebbf.
RSP: 002b:00007f63d6ca20e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f63d5fc6098 RCX: 00007f63d5d8ebe9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f63d5fc6098
RBP: 00007f63d5fc6090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f63d5fc6128 R14: 00007ffd7138ab20 R15: 00007ffd7138ac08
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_remove+0x14a/0x340
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 99 d9 b1 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 7a d9 b1 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90002e3f5e0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff8880266dd640 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90002e3f6e0 R08: ffffffff8f8a0fe3 R09: 1ffffffff1f141fc
R10: dffffc0000000000 R11: fffffbfff1f141fd R12: 0000000000000000
R13: 1ffff110069a1c0c R14: ffff888034d0e060 R15: dffffc0000000000
FS:  00007f63d6ca26c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63d5d74c40 CR3: 000000000df36000 CR4: 00000000000006f0
