------------[ cut here ]------------
WARNING: CPU: 1 PID: 5105 at net/core/dev.c:2473 skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2468
lo: caps=(0x000000a2803b7c69, 0x0000000000000000) len=2110 data_len=2040 gso_size=1984 gso_type=2 ip_summed=0
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 5105 Comm: syz-executor3 Not tainted 4.9.88-gbb52bba #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801b5386fe8 ffffffff81d95f19 ffffffff83a482a0 ffff8801b53870c0
 ffffffff83ee3600 ffffffff82f3737f 0000000000000009 ffff8801b53870b0
 ffffffff8142fa71 0000000041b58ab3 ffffffff8418bc48 ffffffff8142f8b5
Call Trace:
 [<ffffffff81d95f19>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d95f19>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142fa71>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff811317b4>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff81131894>] warn_slowpath_fmt+0xc4/0x110 kernel/panic.c:565
 [<ffffffff82f3737f>] skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2468
 [<ffffffff82f4bf71>] __skb_gso_segment+0x541/0x680 net/core/dev.c:2774
 [<ffffffff82f4ce0e>] skb_gso_segment include/linux/netdevice.h:4000 [inline]
 [<ffffffff82f4ce0e>] validate_xmit_skb+0x44e/0x980 net/core/dev.c:3010
 [<ffffffff82f4eb2c>] __dev_queue_xmit+0xb2c/0x20a0 net/core/dev.c:3435
 [<ffffffff82f500b7>] dev_queue_xmit+0x17/0x20 net/core/dev.c:3476
 [<ffffffff83422439>] neigh_hh_output include/net/neighbour.h:468 [inline]
 [<ffffffff83422439>] dst_neigh_output include/net/dst.h:468 [inline]
 [<ffffffff83422439>] ip6_finish_output2+0x1159/0x1d20 net/ipv6/ip6_output.c:119
 [<ffffffff8342b1e6>] ip6_finish_output+0x2e6/0x750 net/ipv6/ip6_output.c:145
 [<ffffffff8342b843>] NF_HOOK_COND include/linux/netfilter.h:246 [inline]
 [<ffffffff8342b843>] ip6_output+0x1f3/0x6a0 net/ipv6/ip6_output.c:162
 [<ffffffff83545cb5>] dst_output include/net/dst.h:507 [inline]
 [<ffffffff83545cb5>] ip6_local_out+0x95/0x170 net/ipv6/output_core.c:176
 [<ffffffff8342d9b1>] ip6_send_skb+0xa1/0x340 net/ipv6/ip6_output.c:1741
 [<ffffffff8348e611>] udp_v6_send_skb+0x301/0xeb0 net/ipv6/udp.c:974
 [<ffffffff8348f59f>] udp_v6_push_pending_frames+0x22f/0x340 net/ipv6/udp.c:1007
 [<ffffffff834943c8>] udpv6_sendmsg+0x1f38/0x2540 net/ipv6/udp.c:1273
 [<ffffffff832f500c>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:770
 [<ffffffff82edabaa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82edabaa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82edbb08>] SYSC_sendto+0x2c8/0x340 net/socket.c:1670
 [<ffffffff82ede010>] SyS_sendto+0x40/0x50 net/socket.c:1638
 [<ffffffff81006f95>] do_syscall_32_irqs_on arch/x86/entry/common.c:325 [inline]
 [<ffffffff81006f95>] do_fast_syscall_32+0x2f5/0x870 arch/x86/entry/common.c:387
 [<ffffffff838b9190>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..