Because of inet_ntoa() return a statically allocated buffer,
subsequent calls will overwrite, So we fix this bug.
Signed-off-by: Zhang Chen <zhangchen.f...@cn.fujitsu.com>
---
net/colo-compare.c | 33 +++++++++++++++++++++++++--------
1 file changed, 25 insertions(+), 8 deletions(-)
diff --git a/net/colo-compare.c b/net/colo-compare.c
index 282727b..54e6d40 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -182,10 +182,18 @@ static int packet_enqueue(CompareState *s, int mode)
*/
static int colo_packet_compare_common(Packet *ppkt, Packet *spkt, int offset)
{
- trace_colo_compare_ip_info(ppkt->size, inet_ntoa(ppkt->ip->ip_src),
- inet_ntoa(ppkt->ip->ip_dst), spkt->size,
- inet_ntoa(spkt->ip->ip_src),
- inet_ntoa(spkt->ip->ip_dst));
+ if (trace_event_get_state(TRACE_COLO_COMPARE_MISCOMPARE)) {
+ char pri_ip_src[20], pri_ip_dst[20], sec_ip_src[20], sec_ip_dst[20];
+
+ strcpy(pri_ip_src, inet_ntoa(ppkt->ip->ip_src));
+ strcpy(pri_ip_dst, inet_ntoa(ppkt->ip->ip_dst));
+ strcpy(sec_ip_src, inet_ntoa(spkt->ip->ip_src));
+ strcpy(sec_ip_dst, inet_ntoa(spkt->ip->ip_dst));
+
+ trace_colo_compare_ip_info(ppkt->size, pri_ip_src,
+ pri_ip_dst, spkt->size,
+ sec_ip_src, sec_ip_dst);
+ }
if (ppkt->size == spkt->size) {
return memcmp(ppkt->data + offset, spkt->data + offset,
@@ -336,10 +344,19 @@ static int colo_packet_compare_icmp(Packet *spkt, Packet
*ppkt)
static int colo_packet_compare_other(Packet *spkt, Packet *ppkt)
{
trace_colo_compare_main("compare other");
- trace_colo_compare_ip_info(ppkt->size, inet_ntoa(ppkt->ip->ip_src),
- inet_ntoa(ppkt->ip->ip_dst), spkt->size,
- inet_ntoa(spkt->ip->ip_src),
- inet_ntoa(spkt->ip->ip_dst));
+ if (trace_event_get_state(TRACE_COLO_COMPARE_MISCOMPARE)) {
+ char pri_ip_src[20], pri_ip_dst[20], sec_ip_src[20], sec_ip_dst[20];
+
+ strcpy(pri_ip_src, inet_ntoa(ppkt->ip->ip_src));
+ strcpy(pri_ip_dst, inet_ntoa(ppkt->ip->ip_dst));
+ strcpy(sec_ip_src, inet_ntoa(spkt->ip->ip_src));
+ strcpy(sec_ip_dst, inet_ntoa(spkt->ip->ip_dst));
+
+ trace_colo_compare_ip_info(ppkt->size, pri_ip_src,
+ pri_ip_dst, spkt->size,
+ sec_ip_src, sec_ip_dst);
+ }
+
return colo_packet_compare_common(ppkt, spkt, 0);
}
