From nobody Tue May 7 12:05:02 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1667894589148933.4974614863222; Tue, 8 Nov 2022 00:03:09 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1osJYp-0004oc-Jq; Tue, 08 Nov 2022 03:02:19 -0500 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 1osJYj-0004is-CA; Tue, 08 Nov 2022 03:02:16 -0500 Received: from cmccmta3.chinamobile.com ([221.176.66.81]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1osJYg-0000am-IK; Tue, 08 Nov 2022 03:02:13 -0500 Received: from spf.mail.chinamobile.com (unknown[172.16.121.13]) by rmmx-syy-dmz-app11-12011 (RichMail) with SMTP id 2eeb636a0cf69d7-3bd0c; Tue, 08 Nov 2022 16:01:59 +0800 (CST) Received: from localhost.localdomain (unknown[223.108.79.103]) by rmsmtp-syy-appsvr07-12007 (RichMail) with SMTP id 2ee7636a0cee666-511ee; Tue, 08 Nov 2022 16:01:59 +0800 (CST) X-RM-TagInfo: emlType=0 X-RM-SPAM-FLAG: 00000000 X-RM-TRANSID: 2eeb636a0cf69d7-3bd0c X-RM-TagInfo: emlType=0 X-RM-SPAM-FLAG: 00000000 X-RM-TRANSID: 2ee7636a0cee666-511ee From: jianchunfu To: qemu-trivial@nongnu.org, qemu-devel@nongnu.org Cc: mst@redhat.com, jianchunfu Subject: [PATCH] libvhost-user: Handling potential memory allocation failures Date: Tue, 8 Nov 2022 16:01:41 +0800 Message-Id: <20221108080141.5756-1-jianchunfu@cmss.chinamobile.com> X-Mailer: git-send-email 2.18.4 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=221.176.66.81; envelope-from=jianchunfu@cmss.chinamobile.com; helo=cmccmta3.chinamobile.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1667894592335100003 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Add malloc check of virtqueue element in libvhost-user. Signed-off-by: jianchunfu --- subprojects/libvhost-user/libvhost-user.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/subprojects/libvhost-user/libvhost-user.c b/subprojects/libvho= st-user/libvhost-user.c index 47d2efc60f..901cd7a2c0 100644 --- a/subprojects/libvhost-user/libvhost-user.c +++ b/subprojects/libvhost-user/libvhost-user.c @@ -2551,6 +2551,10 @@ virtqueue_alloc_element(size_t sz, =20 assert(sz >=3D sizeof(VuVirtqElement)); elem =3D malloc(out_sg_end); + if (!elem) { + DPRINT("%s: failed to malloc virtqelement\n", __func__); + exit(0); + } elem->out_num =3D out_num; elem->in_num =3D in_num; elem->in_sg =3D (void *)elem + in_sg_ofs; --=20 2.18.4