ip_tables: iptables: counters copy to user failed while replacing table lo: caps=(0x00000144401d7c69, 0x00000144401d7c69) len=632 data_len=0 gso_size=116 gso_type=1 ip_summed=3 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 18064 at net/core/dev.c:2613 skb_warn_bad_offload.cold+0x1d1/0x44d net/core/dev.c:2613 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 18064 Comm: syz-executor.1 Not tainted 4.14.183-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+0x2f/0x30 kernel/panic.c:547 report_bug+0x20a/0x248 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:2613 RSP: 0018:ffff888052117150 EFLAGS: 00010286 RAX: 0000000000000068 RBX: ffff888057326328 RCX: 0000000000000000 RDX: 00000000000134ac RSI: ffffffff81499420 RDI: ffffed100a422e20 RBP: ffff88805b826790 R08: 0000000000000068 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88805b8266c0 R13: 0000000000000074 R14: 0000000000000000 R15: 0000000000000278 skb_checksum_help+0x650/0x7f0 net/core/dev.c:2634 checksum_tg+0x52/0x65 net/netfilter/xt_CHECKSUM.c:29 ipt_do_table+0xaa8/0x1700 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:462 [inline] ip_local_out+0x93/0x170 net/ipv4/ip_output.c:124 ip_queue_xmit+0x7ca/0x1a70 net/ipv4/ip_output.c:504 __tcp_transmit_skb+0x1831/0x2dc0 net/ipv4/tcp_output.c:1131 tcp_transmit_skb net/ipv4/tcp_output.c:1147 [inline] tcp_write_xmit+0x56a/0x49a0 net/ipv4/tcp_output.c:2391 __tcp_push_pending_frames+0xa0/0x230 net/ipv4/tcp_output.c:2572 tcp_push+0x3fd/0x5f0 net/ipv4/tcp.c:715 tcp_sendmsg_locked+0x21f0/0x2ef0 net/ipv4/tcp.c:1426 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457 inet_sendmsg+0x116/0x4d0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x349/0x840 net/socket.c:2062 __sys_sendmmsg+0x129/0x330 net/socket.c:2152 SYSC_sendmmsg net/socket.c:2183 [inline] SyS_sendmmsg+0x2f/0x50 net/socket.c:2178 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45ca69 RSP: 002b:00007f402bd02c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00000000004fc640 RCX: 000000000045ca69 RDX: 0000000000000001 RSI: 0000000020003d80 RDI: 0000000000000004 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008df R14: 00000000004cba75 R15: 00007f402bd036d4 Kernel Offset: disabled Rebooting in 86400 seconds..