IPVS: ftp: loaded support on port[0] = 21 ip_tables: iptables: counters copy to user failed while replacing table Y4`Ҙ: caps=(0x00000144401d7c69, 0x00000144401d7c69) len=2720 data_len=2680 gso_size=536 gso_type=1 ip_summed=3 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 21370 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: 21370 Comm: syz-executor.0 Not tainted 4.14.204-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:ffff88809e447070 EFLAGS: 00010286 RAX: 0000000000000072 RBX: ffff88809c7f2328 RCX: 0000000000000000 RDX: 000000000001e9ee RSI: ffffffff8145da20 RDI: ffffed1013c88e04 RBP: ffff88805f866250 R08: 0000000000000072 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88805f866180 R13: 0000000000000218 R14: 0000000000000a78 R15: 0000000000000aa0 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: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+0x3fd/0x5f0 net/ipv4/tcp.c:715 do_tcp_sendpages+0x1223/0x1750 net/ipv4/tcp.c:1048 tcp_sendpage_locked+0x81/0x130 net/ipv4/tcp.c:1076 tcp_sendpage+0x3a/0x60 net/ipv4/tcp.c:1086 inet_sendpage+0x155/0x590 net/ipv4/af_inet.c:779 kernel_sendpage net/socket.c:3407 [inline] sock_sendpage+0xdf/0x140 net/socket.c:871 pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x326/0x7a0 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0xc1/0x110 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1018 splice_direct_to_actor+0x27c/0x730 fs/splice.c:973 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x47f/0xb30 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45deb9 RSP: 002b:00007f0f3f18dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000027f40 RCX: 000000000045deb9 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000009 RBP: 000000000118bf68 R08: 0000000000000000 R09: 0000000000000000 R10: 000000010000edbe R11: 0000000000000246 R12: 000000000118bf2c R13: 00007fff25f0843f R14: 00007f0f3f18e9c0 R15: 000000000118bf2c Kernel Offset: disabled Rebooting in 86400 seconds..