Message ID | 20171206191648.18208-4-mdroth@linux.vnet.ibm.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org> Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A53C1602BF for <patchwork-qemu-devel@patchwork.kernel.org>; Wed, 6 Dec 2017 19:45:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 97E8628A99 for <patchwork-qemu-devel@patchwork.kernel.org>; Wed, 6 Dec 2017 19:45:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8B70628BC5; Wed, 6 Dec 2017 19:45:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D34F828A99 for <patchwork-qemu-devel@patchwork.kernel.org>; Wed, 6 Dec 2017 19:45:34 +0000 (UTC) Received: from localhost ([::1]:57346 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org>) id 1eMfdN-0005FT-NW for patchwork-qemu-devel@patchwork.kernel.org; Wed, 06 Dec 2017 14:45:33 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49658) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <mdroth@linux.vnet.ibm.com>) id 1eMfCZ-0000qB-LI for qemu-devel@nongnu.org; Wed, 06 Dec 2017 14:17:53 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <mdroth@linux.vnet.ibm.com>) id 1eMfCW-0000r3-H3 for qemu-devel@nongnu.org; Wed, 06 Dec 2017 14:17:51 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:48732 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from <mdroth@linux.vnet.ibm.com>) id 1eMfCW-0000qS-AQ for qemu-devel@nongnu.org; Wed, 06 Dec 2017 14:17:48 -0500 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vB6JEsEi037203 for <qemu-devel@nongnu.org>; Wed, 6 Dec 2017 14:17:47 -0500 Received: from e35.co.us.ibm.com (e35.co.us.ibm.com [32.97.110.153]) by mx0a-001b2d01.pphosted.com with ESMTP id 2eppat0mfp-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for <qemu-devel@nongnu.org>; Wed, 06 Dec 2017 14:17:47 -0500 Received: from localhost by e35.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 6 Dec 2017 12:17:44 -0700 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id vB6JHhmK5243338; Wed, 6 Dec 2017 12:17:43 -0700 Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D3E146A045; Wed, 6 Dec 2017 12:17:43 -0700 (MST) Received: from localhost (unknown [9.80.93.86]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP id 9263E6A03D; Wed, 6 Dec 2017 12:17:43 -0700 (MST) From: Michael Roth <mdroth@linux.vnet.ibm.com> To: qemu-devel@nongnu.org Date: Wed, 6 Dec 2017 13:15:56 -0600 X-Mailer: git-send-email 2.11.0 In-Reply-To: <20171206191648.18208-1-mdroth@linux.vnet.ibm.com> References: <20171206191648.18208-1-mdroth@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17120619-0012-0000-0000-0000156B93F9 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008161; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000244; SDB=6.00956379; UDB=6.00483442; IPR=6.00736416; BA=6.00005729; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00018387; XFM=3.00000015; UTC=2017-12-06 19:17:46 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17120619-0013-0000-0000-0000508FF764 Message-Id: <20171206191648.18208-4-mdroth@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-12-06_07:, , 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 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1712060273 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH 03/55] block/mirror: check backing in bdrv_mirror_top_flush X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel/> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Cc: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>, qemu-stable@nongnu.org, Max Reitz <mreitz@redhat.com> Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org> X-Virus-Scanned: ClamAV using ClamSMTP |
diff --git a/block/mirror.c b/block/mirror.c index 429751b9fe..03fc6d63b7 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -1056,6 +1056,10 @@ static int coroutine_fn bdrv_mirror_top_pwritev(BlockDriverState *bs, static int coroutine_fn bdrv_mirror_top_flush(BlockDriverState *bs) { + if (bs->backing == NULL) { + /* we can be here after failed bdrv_append in mirror_start_job */ + return 0; + } return bdrv_co_flush(bs->backing->bs); }