BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 800000001f5d4067 P4D 800000001f5d4067 PUD 2d11b067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN PTI
CPU: 1 PID: 1685 Comm: syz-executor.4 Not tainted 6.8.0-rc1-syzkaller-00206-g5c138a8a4abe #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:ffffc9000a9478c8 EFLAGS: 00010246
RAX: 1ffff11006f4825c RBX: ffff888037a412e0 RCX: 0000000000040000
RDX: ffffc9000a5e1000 RSI: 000000000003ffff RDI: ffff88807a745000
RBP: ffffc9000a947ad0 R08: ffffffff895712ec R09: 1ffffffff2590c84
R10: dffffc0000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000004 R14: ffffffff895711b9 R15: ffff88807a745000
FS:  00007f26d8fa56c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000002cd8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sk_psock_verdict_data_ready+0x232/0x340 net/core/skmsg.c:1230
 unix_stream_sendmsg+0x9b4/0x1230 net/unix/af_unix.c:2293
 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: 0033:0x7f26d827dda9
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:00007f26d8fa50c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f26d83abf80 RCX: 00007f26d827dda9
RDX: 0000000000000003 RSI: 0000000020000980 RDI: 0000000000000003
RBP: 00007f26d82ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f26d83abf80 R15: 00007fff2903f5d8
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000a9478c8 EFLAGS: 00010246
RAX: 1ffff11006f4825c RBX: ffff888037a412e0 RCX: 0000000000040000
RDX: ffffc9000a5e1000 RSI: 000000000003ffff RDI: ffff88807a745000
RBP: ffffc9000a947ad0 R08: ffffffff895712ec R09: 1ffffffff2590c84
R10: dffffc0000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000004 R14: ffffffff895711b9 R15: ffff88807a745000
FS:  00007f26d8fa56c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000002cd8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400