------------[ cut here ]------------ WARNING: CPU: 1 PID: 6595 at net/core/dev.c:2473 skb_warn_bad_offload+0x2af/0x380 net/core/dev.c:2468 sit0: caps=(0x00000000803b7869, 0x0000000000000000) len=65081 data_len=65033 gso_size=1432 gso_type=2 ip_summed=0 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 6595 Comm: syz-executor686 Not tainted 4.9.107-gdb2c520 #46 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c26d70d8 ffffffff81eb3da9 ffffffff83c48b40 00000000ffffffff 0000000000000000 0000000000000001 00000000000009a9 ffff8801c26d7198 ffffffff81421925 0000000041b58ab3 ffffffff843b9b48 ffffffff81421766 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x3bc kernel/panic.c:179 [] __warn.cold.9+0xc1/0x17f kernel/panic.c:542 [] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:565 [] skb_warn_bad_offload+0x2af/0x380 net/core/dev.c:2468 [] __skb_gso_segment+0x546/0x680 net/core/dev.c:2774 [] skb_gso_segment include/linux/netdevice.h:4000 [inline] [] validate_xmit_skb+0x48e/0xab0 net/core/dev.c:3010 [] __dev_queue_xmit+0x888/0x2080 net/core/dev.c:3443 [] dev_queue_xmit+0x17/0x20 net/core/dev.c:3484 [] neigh_direct_output+0x15/0x20 net/core/neighbour.c:1362 [] dst_neigh_output include/net/dst.h:470 [inline] [] ip6_finish_output2+0x8a8/0x1d00 net/ipv6/ip6_output.c:119 [] ip6_finish_output+0x3b8/0x760 net/ipv6/ip6_output.c:145 [] NF_HOOK_COND include/linux/netfilter.h:246 [inline] [] ip6_output+0x1f3/0x6e0 net/ipv6/ip6_output.c:162 [] dst_output include/net/dst.h:507 [inline] [] ip6_local_out+0x9b/0x180 net/ipv6/output_core.c:176 [] ip6_send_skb+0xa1/0x340 net/ipv6/ip6_output.c:1750 [] udp_v6_send_skb+0x5ba/0xe70 net/ipv6/udp.c:974 [] udpv6_sendmsg+0x1ebb/0x2430 net/ipv6/udp.c:1246 [] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:770 [] sock_sendmsg_nosec net/socket.c:635 [inline] [] sock_sendmsg+0xcc/0x110 net/socket.c:645 [] SYSC_sendto+0x21c/0x370 net/socket.c:1670 [] SyS_sendto+0x40/0x50 net/socket.c:1638 [] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..