------------[ cut here ]------------ WARNING: CPU: 1 PID: 28638 at net/core/dev.c:2473 skb_warn_bad_offload+0x2b0/0x390 net/core/dev.c:2473() sit0: caps=(0x00000000001b7869, 0x00000000001b7869) len=65310 data_len=65262 gso_size=1432 gso_type=2 ip_summed=0 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 28638 Comm: syz-executor.3 Not tainted 4.4.174+ #4 0000000000000000 c05bffd7128d9751 ffff8801d169f108 ffffffff81aad1a1 ffff8801d169f258 ffffffff82835ee0 ffffffff82a54880 00000000000009a9 ffffffff8222e030 ffff8801d169f1e8 ffffffff813a48c2 0000000041b58ab3 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] panic+0x1b9/0x37b kernel/panic.c:112 [] warn_slowpath_common kernel/panic.c:455 [inline] [] warn_slowpath_common.cold+0x20/0x20 kernel/panic.c:435 [] warn_slowpath_fmt+0xbf/0x100 kernel/panic.c:471 [] skb_warn_bad_offload+0x2b0/0x390 net/core/dev.c:2473 [] __skb_gso_segment+0x413/0x4c0 net/core/dev.c:2631 [] skb_gso_segment include/linux/netdevice.h:3712 [inline] [] validate_xmit_skb.isra.0.part.0+0x49f/0xa90 net/core/dev.c:2839 [] validate_xmit_skb net/core/dev.c:2968 [inline] [] __dev_queue_xmit+0x1612/0x1bb0 net/core/dev.c:3221 [] dev_queue_xmit+0x18/0x20 net/core/dev.c:3263 [] neigh_direct_output+0x16/0x20 net/core/neighbour.c:1369 [] dst_neigh_output include/net/dst.h:461 [inline] [] ip6_finish_output2+0x9c7/0x1dc0 net/ipv6/ip6_output.c:113 [] ip6_finish_output+0x2f3/0x750 net/ipv6/ip6_output.c:131 [] NF_HOOK_COND include/linux/netfilter.h:240 [inline] [] ip6_output+0x1b4/0x520 net/ipv6/ip6_output.c:145 [] dst_output include/net/dst.h:498 [inline] [] ip6_local_out+0x9c/0x180 net/ipv6/output_core.c:169 [] ip6_send_skb+0xa2/0x340 net/ipv6/ip6_output.c:1725 [] udp_v6_send_skb+0x85c/0xe90 net/ipv6/udp.c:1066 [] udpv6_sendmsg+0x1e3d/0x24f0 net/ipv6/udp.c:1330 [] inet_sendmsg+0x202/0x4d0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xbe/0x110 net/socket.c:648 [] sock_write_iter+0x235/0x3d0 net/socket.c:847 [] new_sync_write fs/read_write.c:480 [inline] [] __vfs_write+0x2e8/0x3d0 fs/read_write.c:493 [] vfs_write+0x182/0x4e0 fs/read_write.c:540 [] SYSC_write fs/read_write.c:587 [inline] [] SyS_write+0xdc/0x1c0 fs/read_write.c:579 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Kernel Offset: disabled Rebooting in 86400 seconds..