ip_tables: iptables: counters copy to user failed while replacing table lo: caps=(0x00000144401d7c69, 0x0000000000000000) len=236 data_len=0 gso_size=78 gso_type=1 ip_summed=3 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 31202 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: 1 PID: 31202 Comm: syz-executor.1 Not tainted 4.14.212-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:ffff8880ba507790 EFLAGS: 00010282 RAX: 0000000000000067 RBX: ffffffff88559320 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff878bbac0 RDI: ffffed10174a0ee8 RBP: ffff8880543028d0 R08: 0000000000000067 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888054302800 R13: 000000000000004e R14: 0000000000000000 R15: 00000000000000ec 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 include/linux/netfilter.h:248 [inline] ip_local_deliver+0x28c/0x460 net/ipv4/ip_input.c:257 dst_input include/net/dst.h:476 [inline] ip_rcv_finish+0x6e3/0x19f0 net/ipv4/ip_input.c:396 NF_HOOK include/linux/netfilter.h:250 [inline] ip_rcv+0x8a7/0xf01 net/ipv4/ip_input.c:493 __netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512 process_backlog+0x218/0x6f0 net/core/dev.c:5194 napi_poll net/core/dev.c:5596 [inline] net_rx_action+0x466/0xfd0 net/core/dev.c:5662 __do_softirq+0x254/0xa1d kernel/softirq.c:288 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1016 do_softirq.part.0+0x154/0x1b0 kernel/softirq.c:332 do_softirq kernel/softirq.c:324 [inline] __local_bh_enable_ip+0x12b/0x170 kernel/softirq.c:185 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:725 [inline] ip_finish_output2+0xbfc/0x1340 net/ipv4/ip_output.c:232 ip_finish_output+0x37b/0xc50 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip_output+0x1cd/0x510 net/ipv4/ip_output.c:406 dst_output include/net/dst.h:470 [inline] ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125 ip_queue_xmit+0x7d3/0x1a80 net/ipv4/ip_output.c:505 __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+0xa0/0x2d0 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/0x1810 net/ipv4/tcp_input.c:5581 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 tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1458 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: 0033:0x45e149 RSP: 002b:00007fe246b0fc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045e149 RDX: 0000000000007ff2 RSI: 00000000200012c0 RDI: 0000000000000004 RBP: 000000000119bfd8 R08: 0000000000000000 R09: 0000000000000027 R10: 000000000020c49a R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffdf94ad6df R14: 00007fe246b109c0 R15: 000000000119bf8c Kernel Offset: disabled Rebooting in 86400 seconds..