From nobody Sun May 12 00:57:25 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; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1710364062215860.6104477314007; Wed, 13 Mar 2024 14:07:42 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rkVoV-0007P2-TA; Wed, 13 Mar 2024 17:07:03 -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 1rkVoN-0007LY-6V for qemu-devel@nongnu.org; Wed, 13 Mar 2024 17:07:00 -0400 Received: from gandalf.ozlabs.org ([150.107.74.76]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rkVoI-00030e-8s for qemu-devel@nongnu.org; Wed, 13 Mar 2024 17:06:54 -0400 Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4Tw33K0p0Jz4wck; Thu, 14 Mar 2024 08:06:37 +1100 (AEDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4Tw33G1ytLz4wcR; Thu, 14 Mar 2024 08:06:33 +1100 (AEDT) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Alex Williamson , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Eric Auger , Yi Liu , Zhenzhong Duan Subject: [PATCH] vfio/iommufd: Fix memory leak Date: Wed, 13 Mar 2024 22:06:28 +0100 Message-ID: <20240313210628.786224-1-clg@redhat.com> X-Mailer: git-send-email 2.44.0 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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=150.107.74.76; envelope-from=SRS0=aoFc=KT=redhat.com=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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: 1710364063426100001 Make sure variable contents is freed if scanf fails. Cc: Eric Auger Cc: Yi Liu Cc: Zhenzhong Duan Fixes: CID 1540007 Fixes: 5ee3dc7af785 ("vfio/iommufd: Implement the iommufd backend") Signed-off-by: C=C3=A9dric Le Goater Reviewed-by: Eric Auger Reviewed-by: Yi Liu Reviewed-by: Zhenzhong Duan --- hw/vfio/iommufd.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c index a75a785e90c64cdcc4d10c88d217801b3f536cdb..cd549e0ee8573e75772c51cc961= 53762a6bc8550 100644 --- a/hw/vfio/iommufd.c +++ b/hw/vfio/iommufd.c @@ -152,9 +152,8 @@ static int iommufd_cdev_getfd(const char *sysfs_path, E= rror **errp) =20 if (sscanf(contents, "%d:%d", &major, &minor) !=3D 2) { error_setg(errp, "failed to get major:minor for \"%s\"", vfio_dev_= path); - goto out_free_dev_path; + goto out_free_contents; } - g_free(contents); vfio_devt =3D makedev(major, minor); =20 vfio_path =3D g_strdup_printf("/dev/vfio/devices/%s", dent->d_name); @@ -166,6 +165,8 @@ static int iommufd_cdev_getfd(const char *sysfs_path, E= rror **errp) trace_iommufd_cdev_getfd(vfio_path, ret); g_free(vfio_path); =20 +out_free_contents: + g_free(contents); out_free_dev_path: g_free(vfio_dev_path); out_close_dir: --=20 2.44.0