From nobody Wed May 14 15:21:41 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 1520614295675647.4681161311636; Fri, 9 Mar 2018 08:51:35 -0800 (PST) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 93D9B7E9D9; Fri, 9 Mar 2018 16:51:33 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6BCFD5C8BF; Fri, 9 Mar 2018 16:51:33 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 299E5180613A; Fri, 9 Mar 2018 16:51:33 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id w29GmQBo000399 for ; Fri, 9 Mar 2018 11:48:26 -0500 Received: by smtp.corp.redhat.com (Postfix) id D8BCA18661; Fri, 9 Mar 2018 16:48:26 +0000 (UTC) Received: from unknown54ee7586bd10.attlocal.net.com (ovpn-116-138.phx2.redhat.com [10.3.116.138]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9706F5DD82 for ; Fri, 9 Mar 2018 16:48:26 +0000 (UTC) From: John Ferlan To: libvir-list@redhat.com Date: Fri, 9 Mar 2018 11:47:58 -0500 Message-Id: <20180309164816.837-3-jferlan@redhat.com> In-Reply-To: <20180309164816.837-1-jferlan@redhat.com> References: <20180309164816.837-1-jferlan@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-loop: libvir-list@redhat.com Subject: [libvirt] [PATCH 02/20] libxl: Fix possible deadlock in libxlDomainMigrateBegin3Params 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 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Fri, 09 Mar 2018 16:51:34 +0000 (UTC) X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Commit id '45697fe5' added a check for "Domain-0" to generate an error during libxlDomainMigrateBegin3Params; however, by returning NULL, the @vm was left locked since libxlDomObjFromDomain returns a locked @vm. Signed-off-by: John Ferlan Reviewed-by: Jim Fehlig --- src/libxl/libxl_driver.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c index c3616a86d..b5101626e 100644 --- a/src/libxl/libxl_driver.c +++ b/src/libxl/libxl_driver.c @@ -5895,9 +5895,10 @@ libxlDomainMigrateBegin3Params(virDomainPtr domain, return NULL; =20 if (STREQ_NULLABLE(vm->def->name, "Domain-0")) { - virReportError(VIR_ERR_OPERATION_INVALID, "%s", - _("Domain-0 cannot be migrated")); - return NULL; + virReportError(VIR_ERR_OPERATION_INVALID, "%s", + _("Domain-0 cannot be migrated")); + virObjectUnlock(vm); + return NULL; } =20 if (virDomainMigrateBegin3ParamsEnsureACL(domain->conn, vm->def) < 0) { --=20 2.13.6 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list