BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 800000007a07e067 P4D 800000007a07e067 PUD 35207067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN PTI
CPU: 0 PID: 4020 Comm: syz-executor.4 Not tainted 6.8.0-rc1-syzkaller-00558-g68bc61c26cac #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000d69f8a8 EFLAGS: 00010246
RAX: 1ffff1100b093c5c RBX: ffff88805849e2e0 RCX: ffff888016758000
RDX: 0000000000000000 RSI: ffff88805849e000 RDI: ffff8880469df000
RBP: ffffc9000d69fad0 R08: ffffffff89580a2c R09: 1ffffffff2591484
R10: dffffc0000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000004 R14: ffffffff895808f9 R15: ffff8880469df000
FS:  00007f32a13ff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000000349cc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 sk_psock_verdict_data_ready+0x232/0x340 net/core/skmsg.c:1230
 unix_stream_sendmsg+0x9f2/0x1290 net/unix/af_unix.c:2295
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f32a207dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f32a13ff0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f32a21ac120 RCX: 00007f32a207dda9
RDX: 0000000000040000 RSI: 0000000020000980 RDI: 0000000000000003
RBP: 00007f32a20ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f32a21ac120 R15: 00007ffd4d2b0ee8
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000d69f8a8 EFLAGS: 00010246
RAX: 1ffff1100b093c5c RBX: ffff88805849e2e0 RCX: ffff888016758000
RDX: 0000000000000000 RSI: ffff88805849e000 RDI: ffff8880469df000
RBP: ffffc9000d69fad0 R08: ffffffff89580a2c R09: 1ffffffff2591484
R10: dffffc0000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000004 R14: ffffffff895808f9 R15: ffff8880469df000
FS:  00007f32a13ff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000000349cc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600