From patchwork Wed May 7 00:24:17 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Lieven X-Patchwork-Id: 346359 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org 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 ozlabs.org (Postfix) with ESMTPS id E250E14028F for ; Wed, 7 May 2014 10:25:35 +1000 (EST) Received: from localhost ([::1]:37959 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Whpfx-0006FJ-Ok for incoming@patchwork.ozlabs.org; Tue, 06 May 2014 20:25:33 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32827) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WhpfP-0005Td-MV for qemu-devel@nongnu.org; Tue, 06 May 2014 20:25:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WhpfI-00010C-Fw for qemu-devel@nongnu.org; Tue, 06 May 2014 20:24:59 -0400 Received: from mx-v6.kamp.de ([2a02:248:0:51::16]:34789 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WhpfI-0000zd-58 for qemu-devel@nongnu.org; Tue, 06 May 2014 20:24:52 -0400 Received: (qmail 9059 invoked by uid 89); 7 May 2014 00:24:51 -0000 Received: from [82.141.1.145] by client-16-kamp (envelope-from , uid 89) with qmail-scanner-2010/03/19-MF (clamdscan: 0.98.1/18935. hbedv: 8.3.18.12/7.11.147.254. spamassassin: 3.3.1. Clear:RC:1(82.141.1.145):SA:0(-1.2/4.0):. Processed in 1.848124 secs); 07 May 2014 00:24:51 -0000 Received: from ns.kamp-intra.net (HELO dns.kamp-intra.net) ([82.141.1.145]) by mx01.kamp.de with SMTP; 7 May 2014 00:24:49 -0000 X-GL_Whitelist: yes Received: from lieven-pc.kamp-intra.net (lieven-pc.kamp-intra.net [172.21.12.60]) by dns.kamp-intra.net (Postfix) with ESMTP id 70344206A6; Wed, 7 May 2014 02:24:19 +0200 (CEST) Received: by lieven-pc.kamp-intra.net (Postfix, from userid 1000) id 6D2145FB64; Wed, 7 May 2014 02:24:19 +0200 (CEST) From: Peter Lieven To: qemu-devel@nongnu.org Date: Wed, 7 May 2014 02:24:17 +0200 Message-Id: <1399422257-5912-1-git-send-email-pl@kamp.de> X-Mailer: git-send-email 1.7.9.5 X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2a02:248:0:51::16 Cc: qemu-stable@nongnu.org, Peter Lieven , mdroth@linux.vnet.ibm.com, lcapitulino@redhat.com Subject: [Qemu-devel] [PATCH] qapi: fix null pointer dereference on invalid parameter X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org qemu segfaults if it receives an invalid parameter via a qmp command instead of throwing an error. For example: { "execute": "blockdev-add", "arguments": { "options" : { "driver": "invalid-driver" } } } CC: qemu-stable@nongnu.org Signed-off-by: Peter Lieven Reviewed-by: Eric Blake --- qapi/qapi-dealloc-visitor.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/qapi/qapi-dealloc-visitor.c b/qapi/qapi-dealloc-visitor.c index d0ea118..dc53545 100644 --- a/qapi/qapi-dealloc-visitor.c +++ b/qapi/qapi-dealloc-visitor.c @@ -131,7 +131,9 @@ static void qapi_dealloc_end_list(Visitor *v, Error **errp) static void qapi_dealloc_type_str(Visitor *v, char **obj, const char *name, Error **errp) { - g_free(*obj); + if (obj) { + g_free(*obj); + } } static void qapi_dealloc_type_int(Visitor *v, int64_t *obj, const char *name,