BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 137cb2067 P4D 137cb2067 PUD 1351d6067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3487 Comm: syz-executor.4 Not tainted 6.1.78-syzkaller-00021-g1a72e2f692ac #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc90000777908 EFLAGS: 00010246
RAX: 1ffff11026205497 RBX: ffff88813102a4b8 RCX: 0000000000040000
RDX: ffffc90001b8e000 RSI: 0000000000028e84 RDI: ffff8881199fa4c0
RBP: ffffc90000777930 R08: ffffffff841d8447 R09: ffff8881002a6d80
R10: 0000000000000010 R11: dffffc0000000001 R12: 0000000000000004
R13: dffffc0000000000 R14: ffff8881199fa4c0 R15: dffffc0000000000
FS:  00007f518573a6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000138c9c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 sk_psock_verdict_data_ready+0x129/0x160 net/core/skmsg.c:1219
 unix_stream_sendmsg+0x8fd/0x1070 net/unix/af_unix.c:2245
 sock_sendmsg_nosec net/socket.c:716 [inline]
 __sock_sendmsg net/socket.c:728 [inline]
 ____sys_sendmsg+0x5d3/0x9a0 net/socket.c:2504
 ___sys_sendmsg net/socket.c:2558 [inline]
 __sys_sendmsg+0x2a9/0x390 net/socket.c:2587
 __do_sys_sendmsg net/socket.c:2596 [inline]
 __se_sys_sendmsg net/socket.c:2594 [inline]
 __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2594
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5184a7d0a9
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:00007f518573a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5184bb3f80 RCX: 00007f5184a7d0a9
RDX: 0000000000000003 RSI: 0000000020000980 RDI: 000000000000000b
RBP: 00007f5184aec074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5184bb3f80 R15: 00007ffe93b31d18
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc90000777908 EFLAGS: 00010246
RAX: 1ffff11026205497 RBX: ffff88813102a4b8 RCX: 0000000000040000
RDX: ffffc90001b8e000 RSI: 0000000000028e84 RDI: ffff8881199fa4c0
RBP: ffffc90000777930 R08: ffffffff841d8447 R09: ffff8881002a6d80
R10: 0000000000000010 R11: dffffc0000000001 R12: 0000000000000004
R13: dffffc0000000000 R14: ffff8881199fa4c0 R15: dffffc0000000000
FS:  00007f518573a6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000138c9c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600