From patchwork Fri May 12 12:21:54 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 9724023 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id BAF5160348 for ; Fri, 12 May 2017 12:25:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BEA8E287C9 for ; Fri, 12 May 2017 12:25:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B2EF42880B; Fri, 12 May 2017 12:25:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 764AB287C9 for ; Fri, 12 May 2017 12:25:14 +0000 (UTC) Received: from localhost ([::1]:53505 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d99dB-00025z-GA for patchwork-qemu-devel@patchwork.kernel.org; Fri, 12 May 2017 08:25:13 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41266) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d99aE-0000Kz-2e for qemu-devel@nongnu.org; Fri, 12 May 2017 08:22:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d99aA-00056U-Rs for qemu-devel@nongnu.org; Fri, 12 May 2017 08:22:10 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39282) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d99aA-00055z-MC for qemu-devel@nongnu.org; Fri, 12 May 2017 08:22:06 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8421851462 for ; Fri, 12 May 2017 12:22:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 8421851462 Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=kraxel@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 8421851462 Received: from nilsson.home.kraxel.org (ovpn-116-243.ams2.redhat.com [10.36.116.243]) by smtp.corp.redhat.com (Postfix) with ESMTP id 87DA28D57C; Fri, 12 May 2017 12:22:02 +0000 (UTC) Received: by nilsson.home.kraxel.org (Postfix, from userid 500) id 7412681827; Fri, 12 May 2017 14:22:00 +0200 (CEST) From: Gerd Hoffmann To: qemu-devel@nongnu.org Date: Fri, 12 May 2017 14:21:54 +0200 Message-Id: <20170512122158.32032-3-kraxel@redhat.com> In-Reply-To: <20170512122158.32032-1-kraxel@redhat.com> References: <20170512122158.32032-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Fri, 12 May 2017 12:22:05 +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 2/6] usb-redir: fix stack overflow in usbredir_log_data 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: Gerd Hoffmann Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Don't reinvent a broken wheel, just use the hexdump function we have. Impact: low, broken code doesn't run unless you have debug logging enabled. Reported-by: 李强 Signed-off-by: Gerd Hoffmann Message-id: 20170509110128.27261-1-kraxel@redhat.com --- hw/usb/redirect.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c index b001a27f05..ad5ef783a6 100644 --- a/hw/usb/redirect.c +++ b/hw/usb/redirect.c @@ -229,21 +229,10 @@ static void usbredir_log(void *priv, int level, const char *msg) static void usbredir_log_data(USBRedirDevice *dev, const char *desc, const uint8_t *data, int len) { - int i, j, n; - if (dev->debug < usbredirparser_debug_data) { return; } - - for (i = 0; i < len; i += j) { - char buf[128]; - - n = sprintf(buf, "%s", desc); - for (j = 0; j < 8 && i + j < len; j++) { - n += sprintf(buf + n, " %02X", data[i + j]); - } - error_report("%s", buf); - } + qemu_hexdump((char *)data, stderr, desc, len); } /*