From nobody Sat Apr 27 07:45:16 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1489045319221748.3811693825854; Wed, 8 Mar 2017 23:41:59 -0800 (PST) Received: from localhost ([::1]:60830 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1clshx-0007HO-BL for importer@patchew.org; Thu, 09 Mar 2017 02:41:57 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32923) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1clshS-0007HG-3i for qemu-devel@nongnu.org; Thu, 09 Mar 2017 02:41:27 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1clshO-0005iR-6N for qemu-devel@nongnu.org; Thu, 09 Mar 2017 02:41:26 -0500 Received: from [59.151.112.132] (port=2879 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1clshN-0005KQ-P4 for qemu-devel@nongnu.org; Thu, 09 Mar 2017 02:41:22 -0500 Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 09 Mar 2017 15:41:06 +0800 Received: from G08CNEXCHPEKD01.g08.fujitsu.local (unknown [10.167.33.80]) by cn.fujitsu.com (Postfix) with ESMTP id 0D4CE47D8B9C; Thu, 9 Mar 2017 15:41:05 +0800 (CST) Received: from localhost.localdomain (10.167.226.56) by G08CNEXCHPEKD01.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.319.2; Thu, 9 Mar 2017 15:41:05 +0800 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="16369451" From: Zhang Chen To: qemu devel Date: Thu, 9 Mar 2017 15:40:07 +0800 Message-ID: <1489045207-27706-1-git-send-email-zhangchen.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.167.226.56] X-yoursite-MailScanner-ID: 0D4CE47D8B9C.ADECD X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: zhangchen.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Subject: [Qemu-devel] [PATCH] 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Because of inet_ntoa() return a statically allocated buffer, subsequent calls will overwrite, So we fix this bug. Signed-off-by: Zhang Chen --- 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 offs= et) { - 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); + } =20 if (ppkt->size =3D=3D spkt->size) { return memcmp(ppkt->data + offset, spkt->data + offset, @@ -336,10 +344,19 @@ static int colo_packet_compare_icmp(Packet *spkt, Pac= ket *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); } =20 --=20 2.7.4