From patchwork Fri Aug 25 11:58:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Frolov X-Patchwork-Id: 13365505 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C409CC3DA6F for ; Fri, 25 Aug 2023 12:02:30 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qZVVP-0007bo-Dd; Fri, 25 Aug 2023 08:01:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qZVVM-0007bd-US for qemu-devel@nongnu.org; Fri, 25 Aug 2023 08:01:33 -0400 Received: from mx.swemel.ru ([95.143.211.150]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qZVVJ-0000W1-Jd for qemu-devel@nongnu.org; Fri, 25 Aug 2023 08:01:32 -0400 From: Dmitry Frolov DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=swemel.ru; s=mail; t=1692964884; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=wdhQsie481OSJQDBF+B2VeHjsKtO9y9HcfuRQtdd90E=; b=v9EqbnQx8uMPEjYNkCQmkNTIhIXVjI5IHmS8fNT/KrDSP++J0PbnXLjB0s5u71xePK9NGg MkbFk/bZIQN7xV7unoK4zBZ4sPo/z4frqLAZuhPteHnquO80ZQgGkY6/n2Gda+ZlWRQYKK sMJbLBWxSQVNizEuYzgtt9iNfo2NubM= To: kraxel@redhat.com, marcandre.lureau@redhat.com, qemu-devel@nongnu.org Cc: sdl.qemu@linuxtesting.org, Dmitry Frolov Subject: [PATCH] fix leaks found wtih fuzzing Date: Fri, 25 Aug 2023 14:58:19 +0300 Message-Id: <20230825115818.1091936-1-frolov@swemel.ru> MIME-Version: 1.0 Received-SPF: pass client-ip=95.143.211.150; envelope-from=frolov@swemel.ru; helo=mx.swemel.ru X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org It is true, that there is no problem during runtime from the first sight, because the memory is lost just before qemu exits. Nevertheless, this change is necessary, because AddressSanitizer is not able to recognize this situation and produces crash-report (which is false-positive in fact). Lots of False-Positive warnings are davaluing problems, found with fuzzing, and thus the whole methodology of dynamic analysis. This patch eliminates such False-Positive reports, and makes every problem, found with fuzzing, more valuable. Fixes: 060ab76356 ("gtk: don't exit early in case gtk init fails") Signed-off-by: Dmitry Frolov Reviewed-by: Michael Tokarev --- v2: Moved declarations in the beginning. v3: Fixed errors in v2. ui/gtk.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ui/gtk.c b/ui/gtk.c index 8ba41c8f13..7db972732b 100644 --- a/ui/gtk.c +++ b/ui/gtk.c @@ -2360,7 +2360,7 @@ static void gtk_display_init(DisplayState *ds, DisplayOptions *opts) { VirtualConsole *vc; - GtkDisplayState *s = g_malloc0(sizeof(*s)); + GtkDisplayState *s; GdkDisplay *window_display; GtkIconTheme *theme; char *dir; @@ -2370,6 +2370,7 @@ static void gtk_display_init(DisplayState *ds, DisplayOptions *opts) exit(1); } assert(opts->type == DISPLAY_TYPE_GTK); + s = g_malloc0(sizeof(*s)); s->opts = opts; theme = gtk_icon_theme_get_default();