kernel msg: ebtables bug: please report to author: bad policy
IPVS: ftp: loaded support on port[0] = 21
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
kernel msg: ebtables bug: please report to author: bad policy
IPVS: ftp: loaded support on port[0] = 21
WARNING: CPU: 1 PID: 18459 at lib/iov_iter.c:918 iov_iter_revert+0x2ee/0xaa0 lib/iov_iter.c:918
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 18459 Comm: syz-executor0 Not tainted 4.17.0+ #84
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
 panic+0x22f/0x4de kernel/panic.c:184
 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:iov_iter_revert+0x2ee/0xaa0 lib/iov_iter.c:918
Code: 74 24 08 4d 89 7d 20 48 89 de 49 83 c7 01 4c 89 f7 e8 e6 1a 24 fe 49 39 de 72 b7 e8 2c 1a 24 fe e9 3b ff ff ff e8 22 1a 24 fe <0f> 0b e9 3a ff ff ff e8 16 1a 24 fe 49 8d 7d 18 48 b8 00 00 00 00 
RSP: 0018:ffff880193477870 EFLAGS: 00010206
RAX: 0000000000040000 RBX: 00000000ffffff18 RCX: ffffc9000401d000
RDX: 0000000000001640 RSI: ffffffff8356236e RDI: 0000000000000007
RBP: ffff8801934778d0 R08: ffff880194a2e500 R09: ffffed003b5e46d6
R10: 0000000000000003 R11: 0000000000000001 R12: 00000000000000e8
R13: ffff880193477c88 R14: 0000000000003f18 R15: ffff8801c780ac40
 tls_sw_sendmsg+0xefc/0x12b0 net/tls/tls_sw.c:448
 inet_sendmsg+0x19f/0x690 net/ipv4/af_inet.c:798
 sock_sendmsg_nosec net/socket.c:645 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:655
 __sys_sendto+0x3d7/0x670 net/socket.c:1833
 __do_sys_sendto net/socket.c:1845 [inline]
 __se_sys_sendto net/socket.c:1841 [inline]
 __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1841
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455b29
Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f0b147a9c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f0b147aa6d4 RCX: 0000000000455b29
RDX: 00000000fffffdef RSI: 00000000200005c0 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000020000000 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c0f8b R14: 00000000004d0e88 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..