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colo-proxy: fix memory leak

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Fix memory leak in colo-compare.c and filter-rewriter.c
Report by Coverity and add some comments.

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Zhang Chen 2016-10-17 17:23:59 +08:00 • committed by Jason Wang
parent c7c3591669
commit 2061c14c9b
3 changed files with 20 additions and 30 deletions
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17
net/filter-rewriter.c
View file

@ -68,15 +68,11 @@ static int handle_primary_tcp_pkt(NetFilterState *nf,
tcp_pkt = (struct tcphdr *)pkt->transport_header;
if (trace_event_get_state(TRACE_COLO_FILTER_REWRITER_DEBUG)) {
char *sdebug, *ddebug;
sdebug = strdup(inet_ntoa(pkt->ip->ip_src));
ddebug = strdup(inet_ntoa(pkt->ip->ip_dst));
trace_colo_filter_rewriter_pkt_info(__func__, sdebug, ddebug,
trace_colo_filter_rewriter_pkt_info(__func__,
inet_ntoa(pkt->ip->ip_src), inet_ntoa(pkt->ip->ip_dst),
ntohl(tcp_pkt->th_seq), ntohl(tcp_pkt->th_ack),
tcp_pkt->th_flags);
trace_colo_filter_rewriter_conn_offset(conn->offset);
g_free(sdebug);
g_free(ddebug);
}
if (((tcp_pkt->th_flags & (TH_ACK | TH_SYN)) == TH_SYN)) {
@ -116,15 +112,11 @@ static int handle_secondary_tcp_pkt(NetFilterState *nf,
tcp_pkt = (struct tcphdr *)pkt->transport_header;
if (trace_event_get_state(TRACE_COLO_FILTER_REWRITER_DEBUG)) {
char *sdebug, *ddebug;
sdebug = strdup(inet_ntoa(pkt->ip->ip_src));
ddebug = strdup(inet_ntoa(pkt->ip->ip_dst));
trace_colo_filter_rewriter_pkt_info(__func__, sdebug, ddebug,
trace_colo_filter_rewriter_pkt_info(__func__,
inet_ntoa(pkt->ip->ip_src), inet_ntoa(pkt->ip->ip_dst),
ntohl(tcp_pkt->th_seq), ntohl(tcp_pkt->th_ack),
tcp_pkt->th_flags);
trace_colo_filter_rewriter_conn_offset(conn->offset);
g_free(sdebug);
g_free(ddebug);
}
if (((tcp_pkt->th_flags & (TH_ACK | TH_SYN)) == (TH_ACK | TH_SYN))) {
@ -162,6 +154,7 @@ static ssize_t colo_rewriter_receive_iov(NetFilterState *nf,
iov_to_buf(iov, iovcnt, 0, buf, size);
pkt = packet_new(buf, size);
g_free(buf);
/*
* if we get tcp packet