net_ratelimit: 30 callbacks suppressed
lo: caps=(0x00000144401d7c69, 0x00000144401d7c69) len=240 data_len=0 gso_size=84 gso_type=1 ip_summed=3
------------[ cut here ]------------
WARNING: CPU: 0 PID: 27550 at net/core/dev.c:2609 skb_warn_bad_offload.cold+0x1d1/0x44d net/core/dev.c:2609
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 27550 Comm: syz-executor.4 Not tainted 4.14.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x4b kernel/panic.c:547
 report_bug+0x208/0x249 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:skb_warn_bad_offload.cold+0x1d1/0x44d net/core/dev.c:2609
RSP: 0018:ffff88805055f1c0 EFLAGS: 00010286
RAX: 0000000000000067 RBX: ffff888055731828 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff814a4600 RDI: ffffed100a0abe2e
RBP: ffff8880a478a150 R08: 0000000000000067 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a478a080
R13: 0000000000000054 R14: 0000000000000000 R15: 00000000000000f0
 skb_checksum_help+0x627/0x7d0 net/core/dev.c:2630
 checksum_tg+0x52/0x65 net/netfilter/xt_CHECKSUM.c:29
 ipt_do_table+0xa9a/0x16f0 net/ipv4/netfilter/ip_tables.c:353
 iptable_mangle_hook+0x9c/0x560 net/ipv4/netfilter/iptable_mangle.c:90
 nf_hook_entry_hookfn include/linux/netfilter.h:108 [inline]
 nf_hook_slow+0xb0/0x1a0 net/netfilter/core.c:467
 nf_hook include/linux/netfilter.h:205 [inline]
 NF_HOOK_COND include/linux/netfilter.h:238 [inline]
 ip_output+0x2e7/0x510 net/ipv4/ip_output.c:405
 dst_output include/net/dst.h:470 [inline]
 ip_local_out+0x93/0x170 net/ipv4/ip_output.c:124
 ip_queue_xmit+0x7d3/0x1a80 net/ipv4/ip_output.c:504
 __tcp_transmit_skb+0x17e2/0x2cb0 net/ipv4/tcp_output.c:1133
 tcp_transmit_skb net/ipv4/tcp_output.c:1149 [inline]
 tcp_write_xmit+0x69d/0x4e10 net/ipv4/tcp_output.c:2393
 __tcp_push_pending_frames+0xa0/0x230 net/ipv4/tcp_output.c:2577
 tcp_push_pending_frames include/net/tcp.h:1778 [inline]
 tcp_data_snd_check net/ipv4/tcp_input.c:5132 [inline]
 tcp_rcv_established+0x71a/0x17a0 net/ipv4/tcp_input.c:5579
 tcp_v4_do_rcv+0x541/0x7d0 net/ipv4/tcp_ipv4.c:1476
 sk_backlog_rcv include/net/sock.h:921 [inline]
 __release_sock+0x12a/0x350 net/core/sock.c:2269
 release_sock+0x54/0x1b0 net/core/sock.c:2805
 sk_stream_wait_memory+0x492/0xd20 net/core/stream.c:145
 tcp_sendmsg_locked+0x1179/0x2ef0 net/ipv4/tcp.c:1416
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 SYSC_sendto net/socket.c:1763 [inline]
 SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45d5b9
RSP: 002b:00007fa6dbb2ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000002d000 RCX: 000000000045d5b9
RDX: 000000000000fe6a RSI: 00000000200012c0 RDI: 0000000000000004
RBP: 000000000118cf98 R08: 0000000000000000 R09: fffffffffffffe2b
R10: 000000000000000e R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffed898437f R14: 00007fa6dbb2b9c0 R15: 000000000118cf4c
Kernel Offset: disabled
Rebooting in 86400 seconds..