From patchwork Tue Mar 14 08:02:29 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 738581 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3vj6gJ4CyXz9s2G for ; Tue, 14 Mar 2017 19:03:24 +1100 (AEDT) Received: from localhost ([::1]:56975 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cnhQP-00047o-IG for incoming@patchwork.ozlabs.org; Tue, 14 Mar 2017 04:03:21 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37247) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cnhPn-00046K-Cy for qemu-devel@nongnu.org; Tue, 14 Mar 2017 04:02:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cnhPm-0006lp-Dp for qemu-devel@nongnu.org; Tue, 14 Mar 2017 04:02:43 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49060) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cnhPm-0006lR-7c for qemu-devel@nongnu.org; Tue, 14 Mar 2017 04:02:42 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4095685547; Tue, 14 Mar 2017 08:02:42 +0000 (UTC) Received: from jason-ThinkPad-T450s.redhat.com (vpn1-6-54.pek2.redhat.com [10.72.6.54]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v2E82Wf1029775; Tue, 14 Mar 2017 04:02:40 -0400 From: Jason Wang To: peter.maydell@linaro.org, qemu-devel@nongnu.org Date: Tue, 14 Mar 2017 16:02:29 +0800 Message-Id: <1489478550-19431-3-git-send-email-jasowang@redhat.com> In-Reply-To: <1489478550-19431-1-git-send-email-jasowang@redhat.com> References: <1489478550-19431-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Tue, 14 Mar 2017 08:02:42 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 2/3] COLO-compare: Fix trace_event print bug X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Wang , Zhang Chen Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Zhang Chen Because of inet_ntoa() return a statically allocated buffer, subsequent calls will overwrite, So we fix this bug. Signed-off-by: Zhang Chen Signed-off-by: Jason Wang --- 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); }