syzbot

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kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4357 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_sendmsg+0x223/0x230 net/phonet/socket.c:422
Code: 41 5f 5d c3 e8 7e 74 b0 00 89 d9 80 e1 07 fe c1 38 c1 0f 8c 0f ff ff ff 48 89 df e8 f7 6e af f8 e9 02 ff ff ff e8 8d 50 6a f8 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 57 41 56 41
RSP: 0018:ffffc90003f7fc40 EFLAGS: 00010293
RAX: ffffffff890ea213 RBX: 0000000000000000 RCX: ffff888028e33b80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003f7fcf0 R08: ffff88807d5a8d0b R09: 1ffff1100fab51a1
R10: dffffc0000000000 R11: ffffed100fab51a2 R12: dffffc0000000000
R13: ffff888068770600 R14: ffff88807d5a8c80 R15: 1ffff920007eff8c
FS:  00007f5b0d6b56c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b0d6b3fa8 CR3: 000000001f520000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sock_sendmsg_nosec net/socket.c:706 [inline]
 __sock_sendmsg net/socket.c:718 [inline]
 __sys_sendto+0x46d/0x620 net/socket.c:2073
 __do_sys_sendto net/socket.c:2085 [inline]
 __se_sys_sendto net/socket.c:2081 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2081
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5b0e01568e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f5b0d6b3e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f5b0d6b56c0 RCX: 00007f5b0e01568e
RDX: 0000000000000020 RSI: 00007f5b0d6b4000 RDI: 0000000000000006
RBP: 0000000000000000 R08: 00007f5b0d6b3f04 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 00007f5b0d6b3f58 R14: 00007f5b0d6b4000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 94309437d938329d ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_sendmsg+0x223/0x230 net/phonet/socket.c:422
Code: 41 5f 5d c3 e8 7e 74 b0 00 89 d9 80 e1 07 fe c1 38 c1 0f 8c 0f ff ff ff 48 89 df e8 f7 6e af f8 e9 02 ff ff ff e8 8d 50 6a f8 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 57 41 56 41
RSP: 0018:ffffc90003f7fc40 EFLAGS: 00010293
RAX: ffffffff890ea213 RBX: 0000000000000000 RCX: ffff888028e33b80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003f7fcf0 R08: ffff88807d5a8d0b R09: 1ffff1100fab51a1
R10: dffffc0000000000 R11: ffffed100fab51a2 R12: dffffc0000000000
R13: ffff888068770600 R14: ffff88807d5a8c80 R15: 1ffff920007eff8c
FS:  00007f5b0d6b56c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b0e0a2540 CR3: 000000001f520000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400