BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 373ee067 P4D 373ee067 PUD 297bf067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 25855 Comm: syz-executor.3 Not tainted 6.7.0-rc1-syzkaller-00434-g7490a42020bb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000396f868 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888020fe0800 RCX: ffffffff88872f0f
RDX: 1ffff11005a40c5c RSI: ffffffff88872f19 RDI: ffff888020fe0800
RBP: 0000000000000004 R08: 0000000000000007 R09: 0000000000000000
R10: ffff88802d206000 R11: 0000000000000000 R12: ffff88802d206000
R13: 0000000000033fe0 R14: ffff888020fe0800 R15: ffff888020fe0800
FS:  00007f0e42d836c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000080027000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sk_psock_verdict_data_ready net/core/skmsg.c:1228 [inline]
 sk_psock_verdict_data_ready+0x207/0x3d0 net/core/skmsg.c:1208
 unix_dgram_sendmsg+0x11b3/0x1ca0 net/unix/af_unix.c:2116
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xd5/0x180 net/socket.c:745
 ____sys_sendmsg+0x2ac/0x940 net/socket.c:2584
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
 __sys_sendmmsg+0x1a1/0x450 net/socket.c:2724
 __do_sys_sendmmsg net/socket.c:2753 [inline]
 __se_sys_sendmmsg net/socket.c:2750 [inline]
 __x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2750
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f0e4207cae9
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:00007f0e42d830c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f0e4219c120 RCX: 00007f0e4207cae9
RDX: 0000000000000001 RSI: 0000000020002100 RDI: 0000000000000005
RBP: 00007f0e420c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f0e4219c120 R15: 00007fffb25194e8
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000396f868 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888020fe0800 RCX: ffffffff88872f0f
RDX: 1ffff11005a40c5c RSI: ffffffff88872f19 RDI: ffff888020fe0800
RBP: 0000000000000004 R08: 0000000000000007 R09: 0000000000000000
R10: ffff88802d206000 R11: 0000000000000000 R12: ffff88802d206000
R13: 0000000000033fe0 R14: ffff888020fe0800 R15: ffff888020fe0800
FS:  00007f0e42d836c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000080027000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400