From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 11DB5C10F27 for ; Mon, 9 Mar 2020 10:10:15 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id CFD5C2072A for ; Mon, 9 Mar 2020 10:10:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="MapkUnGJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CFD5C2072A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:39978 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jBFMU-0001ED-28 for qemu-devel@archiver.kernel.org; Mon, 09 Mar 2020 06:10:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35130) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jBFJR-00061U-Hg for qemu-devel@nongnu.org; Mon, 09 Mar 2020 06:07:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jBFJQ-0000iN-Ad for qemu-devel@nongnu.org; Mon, 09 Mar 2020 06:07:05 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:51220 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jBFJQ-0000iF-7K for qemu-devel@nongnu.org; Mon, 09 Mar 2020 06:07:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1583748423; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IeR8UK5dAc7AbSztdWqLPO01N7LGDPAoX2U01nGvZC4=; b=MapkUnGJl+ymjXcj/Lxs8xYvYVnJKK1xu4T3nNs58KGfCG0v4jbZd98xUi3JMv5dO3Ur5/ m76Of7fy6ocngPwRfvyAQCw9wHvmL1hPI73OBqVpUCIxf7W6js0+9qYV/Ny/l+V64HRl0u xkXO4U6UP6G1asWzIscrlt75TMQ/hvI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-397-JTFV7Q60MeqHVRNHo7rCqA-1; Mon, 09 Mar 2020 06:07:02 -0400 X-MC-Unique: JTFV7Q60MeqHVRNHo7rCqA-1 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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id DFB9D1083E86; Mon, 9 Mar 2020 10:07:00 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-34.ams2.redhat.com [10.36.116.34]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A902A8F365; Mon, 9 Mar 2020 10:07:00 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id CA66711386A6; Mon, 9 Mar 2020 11:06:58 +0100 (CET) From: Markus Armbruster To: Pan Nengyuan Subject: Re: [PATCH] qom-qmp-cmds: fix two memleaks in qmp_object_add References: <20200309092212.3249-1-pannengyuan@huawei.com> Date: Mon, 09 Mar 2020 11:06:58 +0100 In-Reply-To: <20200309092212.3249-1-pannengyuan@huawei.com> (Pan Nengyuan's message of "Mon, 9 Mar 2020 17:22:12 +0800") Message-ID: <87lfo97sfx.fsf@dusky.pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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: Kevin Wolf , berrange@redhat.com, ehabkost@redhat.com, qemu-devel@nongnu.org, euler.robot@huawei.com, pbonzini@redhat.com, zhang.zhanghailiang@huawei.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Cc'ing Kevin in the hope of a review. Pan Nengyuan writes: > 'type/id' forgot to free in qmp_object_add, this patch fix that. > > The leak stack: > Direct leak of 84 byte(s) in 6 object(s) allocated from: > #0 0x7fe2a5ebf768 in __interceptor_malloc (/lib64/libasan.so.5+0xef76= 8) > #1 0x7fe2a5044445 in g_malloc (/lib64/libglib-2.0.so.0+0x52445) > #2 0x7fe2a505dd92 in g_strdup (/lib64/libglib-2.0.so.0+0x6bd92) > #3 0x56344954e692 in qmp_object_add /mnt/sdb/qemu-new/qemu_test/qemu/= qom/qom-qmp-cmds.c:258 > #4 0x563449960f5a in do_qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu= /qapi/qmp-dispatch.c:132 > #5 0x563449960f5a in qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu/qa= pi/qmp-dispatch.c:175 > #6 0x563449498a30 in monitor_qmp_dispatch /mnt/sdb/qemu-new/qemu_test= /qemu/monitor/qmp.c:145 > #7 0x56344949a64f in monitor_qmp_bh_dispatcher /mnt/sdb/qemu-new/qemu= _test/qemu/monitor/qmp.c:234 > #8 0x563449a92a3a in aio_bh_call /mnt/sdb/qemu-new/qemu_test/qemu/uti= l/async.c:136 > > Direct leak of 54 byte(s) in 6 object(s) allocated from: > #0 0x7fe2a5ebf768 in __interceptor_malloc (/lib64/libasan.so.5+0xef76= 8) > #1 0x7fe2a5044445 in g_malloc (/lib64/libglib-2.0.so.0+0x52445) > #2 0x7fe2a505dd92 in g_strdup (/lib64/libglib-2.0.so.0+0x6bd92) > #3 0x56344954e6c4 in qmp_object_add /mnt/sdb/qemu-new/qemu_test/qemu/= qom/qom-qmp-cmds.c:267 > #4 0x563449960f5a in do_qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu= /qapi/qmp-dispatch.c:132 > #5 0x563449960f5a in qmp_dispatch /mnt/sdb/qemu-new/qemu_test/qemu/qa= pi/qmp-dispatch.c:175 > #6 0x563449498a30 in monitor_qmp_dispatch /mnt/sdb/qemu-new/qemu_test= /qemu/monitor/qmp.c:145 > #7 0x56344949a64f in monitor_qmp_bh_dispatcher /mnt/sdb/qemu-new/qemu= _test/qemu/monitor/qmp.c:234 > #8 0x563449a92a3a in aio_bh_call /mnt/sdb/qemu-new/qemu_test/qemu/uti= l/async.c:136 > > Fixes: 5f07c4d60d091320186e7b0edaf9ed2cc16b2d1e > Reported-by: Euler Robot > Signed-off-by: Pan Nengyuan > --- > qom/qom-qmp-cmds.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/qom/qom-qmp-cmds.c b/qom/qom-qmp-cmds.c > index 49db926fcc..ac59ba1aa8 100644 > --- a/qom/qom-qmp-cmds.c > +++ b/qom/qom-qmp-cmds.c > @@ -247,8 +247,8 @@ void qmp_object_add(QDict *qdict, QObject **ret_data,= Error **errp) > QDict *pdict; > Visitor *v; > Object *obj; > - const char *type; > - const char *id; > + g_autofree const char *type =3D NULL; > + g_autofree const char *id =3D NULL; > =20 > type =3D qdict_get_try_str(qdict, "qom-type"); > if (!type) {