kernel msg: ebtables bug: please report to author: Wrong len argument ------------[ cut here ]------------ ip6tnl0: caps=(0x00000000401d7869, 0x00000000401d7869) len=353 data_len=209 gso_size=6 gso_type=131072 ip_summed=0 WARNING: CPU: 1 PID: 8611 at net/core/dev.c:2663 skb_warn_bad_offload+0x2bc/0x600 net/core/dev.c:2658 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 8611 Comm: syz-executor5 Not tainted 4.17.0-rc2+ #23 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 panic+0x22f/0x4de kernel/panic.c:184 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296 kernel msg: ebtables bug: please report to author: Wrong len argument do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992 RIP: 0010:skb_warn_bad_offload+0x2bc/0x600 net/core/dev.c:2658 RSP: 0018:ffff8801cb456868 EFLAGS: 00010286 RAX: 0000000000000072 RBX: ffff8801b57b6350 RCX: ffffc90007abe000 RDX: 0000000000007e38 RSI: ffffffff8160f561 RDI: 0000000000000001 RBP: ffff8801cb4568c0 R08: ffff8801ba826100 R09: ffffed003b5e4f90 R10: ffffed003b5e4f90 R11: ffff8801daf27c87 R12: 0000000000000000 R13: ffff880197ac13a0 R14: 0000000000020000 R15: 0000000000000006 __skb_gso_segment+0x6ab/0x870 net/core/dev.c:2870 skb_gso_segment include/linux/netdevice.h:4038 [inline] validate_xmit_skb+0x54d/0xd90 net/core/dev.c:3120 __dev_queue_xmit+0xbf8/0x34c0 net/core/dev.c:3577 dev_queue_xmit+0x17/0x20 net/core/dev.c:3618 neigh_direct_output+0x15/0x20 net/core/neighbour.c:1401 neigh_output include/net/neighbour.h:483 [inline] ip6_finish_output2+0xc93/0x2800 net/ipv6/ip6_output.c:120 ip6_finish_output+0x5fe/0xbc0 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:277 [inline] ip6_output+0x227/0x9b0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] ip6_local_out+0xc5/0x1b0 net/ipv6/output_core.c:176 ip6_send_skb+0xba/0x340 net/ipv6/ip6_output.c:1715 udp_v6_send_skb.isra.24+0xa42/0x1250 net/ipv6/udp.c:1079 udpv6_sendmsg+0x2a7c/0x32a0 net/ipv6/udp.c:1356 inet_sendmsg+0x19f/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:639 ___sys_sendmsg+0x525/0x940 net/socket.c:2117 __sys_sendmmsg+0x240/0x6f0 net/socket.c:2212 __do_sys_sendmmsg net/socket.c:2241 [inline] __se_sys_sendmmsg net/socket.c:2238 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2238 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455979 RSP: 002b:00007f39739dcc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f39739dd6d4 RCX: 0000000000455979 RDX: 040000000000011d RSI: 0000000020001c40 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000004d4 R14: 00000000006fa480 R15: 0000000000000000 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..