nfnetlink/ctnetlink from pom-ng r3884

[Wang Jian <lark@linux.net.cn>]

Hi,

I now use conntrack/ + libctnetlink/ + libnfnetlink/ + nfnetlink/ +
ctnetlink/ + conntrack-event-api/, all are from r3884. I also enable
CT_ACCT.

First issue is this kind of duplicate in event message

type: [NEW] src=192.168.0.27 dst=192.168.0.254 sport=22 dport=2846 src=192.168.0.254 dst=192.168.0.27 sport=2846 dport=22 status:8 timeout:432000 tcp 6 orig_packets=1 orig_bytes=0, reply_packets=268 reply_bytes=0 
type: [UPDATE] src=192.168.0.27 dst=192.168.0.254 sport=22 dport=2846 src=192.168.0.254 dst=192.168.0.27 sport=2846 dport=22 status:10 timeout:432000 orig_packets=1 orig_bytes=0, reply_packets=268 reply_bytes=0 
orig_packets=1 orig_bytes=0, reply_packets=268 reply_bytes=0 

See the second event message. account information is printed twice, that
means the netlink message has duplicated account information.


And

# ./conntrack -E conntrack
...
type: [UPDATE] src=192.168.0.254 dst=192.168.0.27 sport=4347 dport=22 src=192.168.0.27 dst=192.168.0.254 sport=22 dport=4347 timeout:120 tcp 6 orig_packets=5 orig_bytes=0, reply_packets=270 reply_bytes=0 
type: [DESTROY] src=192.168.0.254 dst=192.168.0.27 sport=4347 dport=22 src=192.168.0.27 dst=192.168.0.254 sport=22 dport=4347 orig_packets=5 orig_bytes=0, reply_packets=270 reply_bytes=0 
Segmentation fault (core dumped)

core dumps again. This time the backtrace is

[root@qos conntrack]# gdb conntrack core.31335 
Loaded symbols for extensions/libct_proto_tcp.so
#0  0x0804a258 in event_handler (sock=0xbffff700, nlh=0xbfffd760, 
    arg=0xbffff760) at src/libct.c:186
186                     while (NFA_OK(attr, attrlen)) {
(gdb) bt
#0  0x0804a258 in event_handler (sock=0xbffff700, nlh=0xbfffd760, 
    arg=0xbffff760) at src/libct.c:186
#1  0x0804b03c in list_conntrack_handler ()
#2  0x0804bceb in nfnl_listen ()
#3  0x0804b22d in ctnl_event_conntrack ()
#4  0x0804ac02 in event_conntrack () at src/libct.c:451
#5  0x08049d51 in main (argc=3, argv=0xbffff8f4) at src/conntrack.c:473
(gdb) print attr
$1 = (struct nfattr *) 0xc00063c4
(gdb) print attrlen
$2 = 1525387413

Pablo, if you need more information, just tell me.


-- 
  lark