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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 21 Sep 2018 14:02:10 +0100 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w8LD292n52429024 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 21 Sep 2018 13:02:09 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3BE67A4040; Fri, 21 Sep 2018 16:01:53 +0100 (BST) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 02BE1A404D; Fri, 21 Sep 2018 16:01:53 +0100 (BST) Received: from marc-ibm.emea.ibm.com (unknown [9.145.13.189]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 21 Sep 2018 16:01:52 +0100 (BST) From: Marc Hartmayer To: Date: Fri, 21 Sep 2018 15:02:01 +0200 In-Reply-To: <20180921130204.22405-1-mhartmay@linux.ibm.com> References: <20180921130204.22405-1-mhartmay@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18092113-0012-0000-0000-000002ACC3BB X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18092113-0013-0000-0000-000020E0CA0A Message-Id: <20180921130204.22405-2-mhartmay@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-09-21_05:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=877 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1809210134 X-Greylist: Sender passed SPF test, Sender IP whitelisted by DNSRBL, ACL 214 matched, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.46]); Fri, 21 Sep 2018 13:02:15 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.46]); Fri, 21 Sep 2018 13:02:15 +0000 (UTC) for IP:'148.163.158.5' DOMAIN:'mx0b-001b2d01.pphosted.com' HELO:'mx0a-001b2d01.pphosted.com' FROM:'mhartmay@linux.ibm.com' RCPT:'' X-RedHat-Spam-Score: 1.296 * (KHOP_DYNAMIC, RCVD_IN_DNSWL_LOW, SPF_PASS) 148.163.158.5 mx0b-001b2d01.pphosted.com 148.163.158.5 mx0b-001b2d01.pphosted.com X-Scanned-By: MIMEDefang 2.84 on 10.5.110.46 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-loop: libvir-list@redhat.com Cc: Marc Hartmayer Subject: [libvirt] [PATCH 1/4] virdbus: Grab a ref as long as the while loop is executed X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.48]); Fri, 21 Sep 2018 13:02:23 +0000 (UTC) X-ZohoMail: RDMRC_1 RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" From: Marc Hartmayer Grab a ref for info->bus (a DBus connection) as long as the while loop is running. With the grabbed reference it is ensured that info->bus isn't freed as long as the while loop is executed. This is necessary as it's allowed to drop the last ref for the bus connection in a handler. There was already a bug of this kind in libdbus itself: https://bugs.freedesktop.org/show_bug.cgi?id=3D15635. Signed-off-by: Marc Hartmayer Reviewed-by: Boris Fiuczynski --- src/util/virdbus.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/util/virdbus.c b/src/util/virdbus.c index ba8b684f17f1..d0e2c76e486f 100644 --- a/src/util/virdbus.c +++ b/src/util/virdbus.c @@ -198,8 +198,10 @@ static void virDBusWatchCallback(int fdatch ATTRIBUTE_= UNUSED, =20 (void)dbus_watch_handle(watch, dbus_flags); =20 + dbus_connection_ref(info->bus); while (dbus_connection_dispatch(info->bus) =3D=3D DBUS_DISPATCH_DATA_R= EMAINS) /* keep dispatching while data remains */; + dbus_connection_unref(info->bus); } =20 =20 --=20 2.17.0 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list