kernel BUG at ./include/linux/skbuff.h:2064! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 6101 Comm: syz-executor3 Not tainted 4.13.0-rc4+ #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801c5e50340 task.stack: ffff8801c6200000 RIP: 0010:__skb_pull include/linux/skbuff.h:2064 [inline] RIP: 0010:__ip6_make_skb+0x18cf/0x1f70 net/ipv6/ip6_output.c:1617 RSP: 0018:ffff8801c6207570 EFLAGS: 00010297 RAX: ffff8801c5e50340 RBX: 0000000000000028 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801c66b35e0 RBP: ffff8801c6207780 R08: ffff8801c59303bc R09: 0000000000000000 R10: ffff8801c62077a0 R11: 0000000000000000 R12: ffff8801c59303c8 R13: ffff8801c5930340 R14: 0000000000002008 R15: dffffc0000000000 FS: 00007f7dc68dd700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c3d10 CR3: 00000001c5a35000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip6_finish_skb include/net/ipv6.h:911 [inline] udp_v6_push_pending_frames+0x255/0x390 net/ipv6/udp.c:1093 udpv6_sendmsg+0x280d/0x31a0 net/ipv6/udp.c:1363 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x352/0x5a0 net/socket.c:1750 SyS_sendto+0x40/0x50 net/socket.c:1718 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4512e9 RSP: 002b:00007f7dc68dcc08 EFLAGS: 00000216 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000007180a8 RCX: 00000000004512e9 RDX: 0000000000000000 RSI: 0000000020f5b000 RDI: 0000000000000003 RBP: 0000000000000086 R08: 0000000020f5afe4 R09: 000000000000001c R10: 0000000000000800 R11: 0000000000000216 R12: 0000000000000000 R13: 0000000000a6f7ef R14: 00007f7dc68dd9c0 R15: 0000000000000002 Code: 6b 77 fd e9 c5 e8 ff ff e8 9f 6b 77 fd e9 4a ea ff ff 48 89 f7 e8 72 6b 77 fd e9 aa eb ff ff e8 28 1e 44 fd 0f 0b e8 21 1e 44 fd <0f> 0b 49 8d 45 78 4d 8d 45 7c 48 89 85 78 fe ff ff 49 8d 85 ba RIP: __skb_pull include/linux/skbuff.h:2064 [inline] RSP: ffff8801c6207570 RIP: __ip6_make_skb+0x18cf/0x1f70 net/ipv6/ip6_output.c:1617 RSP: ffff8801c6207570 ---[ end trace 82effc8ad6d96456 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..