From patchwork Tue Jul 30 16:01:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 11066065 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EFB501399 for ; Tue, 30 Jul 2019 16:07:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E0621209CE for ; Tue, 30 Jul 2019 16:07:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D475728562; Tue, 30 Jul 2019 16:07:22 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 810D7209CE for ; Tue, 30 Jul 2019 16:07:22 +0000 (UTC) Received: from localhost ([::1]:34454 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hsUen-0005qk-Ru for patchwork-qemu-devel@patchwork.kernel.org; Tue, 30 Jul 2019 12:07:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49223) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hsUZd-0005Rr-OD for qemu-devel@nongnu.org; Tue, 30 Jul 2019 12:02:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hsUZb-0005Zg-Hl for qemu-devel@nongnu.org; Tue, 30 Jul 2019 12:02:01 -0400 Received: from relay.sw.ru ([185.231.240.75]:53300) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hsUZZ-0005Y9-M8; Tue, 30 Jul 2019 12:01:57 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay.sw.ru with esmtp (Exim 4.92) (envelope-from ) id 1hsUZS-0001RG-Fs; Tue, 30 Jul 2019 19:01:50 +0300 From: Andrey Shinkevich To: qemu-devel@nongnu.org, qemu-block@nongnu.org Date: Tue, 30 Jul 2019 19:01:37 +0300 Message-Id: <1564502498-805893-3-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1564502498-805893-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1564502498-805893-1-git-send-email-andrey.shinkevich@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 185.231.240.75 Subject: [Qemu-devel] [PATCH 2/3] tests: Fix uninitialized byte in test_visitor_in_fuzz X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vsementsov@virtuozzo.com, berto@igalia.com, ehabkost@redhat.com, kvm@vger.kernel.org, mtosatti@redhat.com, mdroth@linux.vnet.ibm.com, armbru@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org, pbonzini@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP One byte in the local buffer stays uninitialized, at least with the first iteration, because of the double decrement in the test_visitor_in_fuzz(). This is what Valgrind does not like and not critical for the test itself. So, reduce the number of the memory issues reports. Signed-off-by: Andrey Shinkevich --- tests/test-string-input-visitor.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/tests/test-string-input-visitor.c b/tests/test-string-input-visitor.c index 34b54df..5418e08 100644 --- a/tests/test-string-input-visitor.c +++ b/tests/test-string-input-visitor.c @@ -444,16 +444,14 @@ static void test_visitor_in_fuzz(TestInputVisitorData *data, char buf[10000]; for (i = 0; i < 100; i++) { - unsigned int j; + unsigned int j, k; j = g_test_rand_int_range(0, sizeof(buf) - 1); buf[j] = '\0'; - if (j != 0) { - for (j--; j != 0; j--) { - buf[j - 1] = (char)g_test_rand_int_range(0, 256); - } + for (k = 0; k != j; k++) { + buf[k] = (char)g_test_rand_int_range(0, 256); } v = visitor_input_test_init(data, buf);