BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 117d1d067 P4D 117d1d067 
PUD 117d14067 PMD 0 

Oops: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 4144 Comm: syz-executor.3 Not tainted 5.18.0-rc3-syzkaller-00007-g559089e0a93d-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:virtio_transport_remove_sock+0x3a/0xd0 net/vmw_vsock/virtio_transport_common.c:869
Code: 49 bd 22 01 00 00 00 00 ad de 41 54 55 53 48 89 fb 48 83 ec 08 48 89 3c 24 e8 22 b9 08 fd 4c 8b a3 c8 04 00 00 49 8b 44 24 30 <48> 8b 18 48 8d 68 d0 48 83 eb 30 49 39 ec 75 05 eb 64 48 89 c3 e8
RSP: 0018:ffffc900029cbc20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888117db3a80 RCX: 0000000000000000
RDX: ffff888115c607c0 RSI: ffffffff842d4dae RDI: ffff888117db3a80
RBP: ffff888117db3a80 R08: 0000000000000000 R09: 0000000000000007
R10: ffffffff842d60c3 R11: 000000000000000b R12: ffff888117c60780
R13: dead000000000122 R14: dead000000000100 R15: ffff888113a04600
FS:  00007f9e311dd700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000117d8d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 virtio_transport_release+0x51/0x430 net/vmw_vsock/virtio_transport_common.c:980
 __vsock_release+0x4d/0x310 net/vmw_vsock/af_vsock.c:810
 vsock_release+0x14/0x30 net/vmw_vsock/af_vsock.c:887
 __sock_release+0x47/0xd0 net/socket.c:650
 sock_close+0x15/0x20 net/socket.c:1318
 __fput+0x105/0x430 fs/file_table.c:317
 task_work_run+0x73/0xb0 kernel/task_work.c:164
 get_signal+0xb9/0xf90 kernel/signal.c:2641
 arch_do_signal_or_restart+0x31/0x720 arch/x86/kernel/signal.c:867
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0xa7/0x160 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:294
 do_syscall_64+0x42/0x80 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f9e31a89049
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9e311dd168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 00007f9e31b9c030 RCX: 00007f9e31a89049
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f9e31ae308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd5225875f R14: 00007f9e311dd300 R15: 0000000000022000
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:virtio_transport_remove_sock+0x3a/0xd0 net/vmw_vsock/virtio_transport_common.c:869
Code: 49 bd 22 01 00 00 00 00 ad de 41 54 55 53 48 89 fb 48 83 ec 08 48 89 3c 24 e8 22 b9 08 fd 4c 8b a3 c8 04 00 00 49 8b 44 24 30 <48> 8b 18 48 8d 68 d0 48 83 eb 30 49 39 ec 75 05 eb 64 48 89 c3 e8
RSP: 0018:ffffc900029cbc20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888117db3a80 RCX: 0000000000000000
RDX: ffff888115c607c0 RSI: ffffffff842d4dae RDI: ffff888117db3a80
RBP: ffff888117db3a80 R08: 0000000000000000 R09: 0000000000000007
R10: ffffffff842d60c3 R11: 000000000000000b R12: ffff888117c60780
R13: dead000000000122 R14: dead000000000100 R15: ffff888113a04600
FS:  00007f9e311dd700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000117d8d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	49 bd 22 01 00 00 00 	movabs $0xdead000000000122,%r13
   7:	00 ad de
   a:	41 54                	push   %r12
   c:	55                   	push   %rbp
   d:	53                   	push   %rbx
   e:	48 89 fb             	mov    %rdi,%rbx
  11:	48 83 ec 08          	sub    $0x8,%rsp
  15:	48 89 3c 24          	mov    %rdi,(%rsp)
  19:	e8 22 b9 08 fd       	callq  0xfd08b940
  1e:	4c 8b a3 c8 04 00 00 	mov    0x4c8(%rbx),%r12
  25:	49 8b 44 24 30       	mov    0x30(%r12),%rax
* 2a:	48 8b 18             	mov    (%rax),%rbx <-- trapping instruction
  2d:	48 8d 68 d0          	lea    -0x30(%rax),%rbp
  31:	48 83 eb 30          	sub    $0x30,%rbx
  35:	49 39 ec             	cmp    %rbp,%r12
  38:	75 05                	jne    0x3f
  3a:	eb 64                	jmp    0xa0
  3c:	48 89 c3             	mov    %rax,%rbx
  3f:	e8                   	.byte 0xe8