From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96316C433E3 for ; Mon, 27 Jul 2020 14:39:24 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6352920719 for ; Mon, 27 Jul 2020 14:39:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Ats0DdC9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6352920719 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:54722 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k04Hj-0004fv-KR for qemu-devel@archiver.kernel.org; Mon, 27 Jul 2020 10:39:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53834) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k04Gk-0002vS-SN for qemu-devel@nongnu.org; Mon, 27 Jul 2020 10:38:22 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:29689 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1k04Gj-0001xW-2o for qemu-devel@nongnu.org; Mon, 27 Jul 2020 10:38:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1595860700; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=fp8X7gIpKH6iz8HjHeEv2VjCcxBcFNqJiwjqghVZCuI=; b=Ats0DdC9uNc8C2r2wR4MkKw1ntT9XT348WqH3gXlBpTeoR78VybOvO3rMPnxV6uKJ6FXoW IMpawySnxbKv5aPtWk5yGkBqvtmMU2y2xFkPGz62zQPtza+w3Yba44bZg8QUvHfKZjLHpe CTfmazKihTgZWawpdIb5+xZN/09v3ec= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-246-qxvSwG-SNVqdv9_O1wV63w-1; Mon, 27 Jul 2020 10:38:17 -0400 X-MC-Unique: qxvSwG-SNVqdv9_O1wV63w-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 98266100AA25; Mon, 27 Jul 2020 14:38:16 +0000 (UTC) Received: from localhost (ovpn-113-45.ams2.redhat.com [10.36.113.45]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3F95F10013C0; Mon, 27 Jul 2020 14:38:16 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Subject: [PULL 1/3] block/amend: Check whether the node exists Date: Mon, 27 Jul 2020 16:38:10 +0200 Message-Id: <20200727143812.1101547-2-mreitz@redhat.com> In-Reply-To: <20200727143812.1101547-1-mreitz@redhat.com> References: <20200727143812.1101547-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=205.139.110.120; envelope-from=mreitz@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/27 01:44:14 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Maydell , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We should check whether the user-specified node-name actually refers to a node. The simplest way to do that is to use bdrv_lookup_bs() instead of bdrv_find_node() (the former wraps the latter, and produces an error message if necessary). Reported-by: Coverity (CID 1430268) Fixes: ced914d0ab9fb2c900f873f6349a0b8eecd1fdbe Signed-off-by: Max Reitz Message-Id: <20200710095037.10885-1-mreitz@redhat.com> Reviewed-by: Maxim Levitsky --- block/amend.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/block/amend.c b/block/amend.c index f4612dcf08..392df9ef83 100644 --- a/block/amend.c +++ b/block/amend.c @@ -69,8 +69,12 @@ void qmp_x_blockdev_amend(const char *job_id, BlockdevAmendJob *s; const char *fmt = BlockdevDriver_str(options->driver); BlockDriver *drv = bdrv_find_format(fmt); - BlockDriverState *bs = bdrv_find_node(node_name); + BlockDriverState *bs; + bs = bdrv_lookup_bs(NULL, node_name, errp); + if (!bs) { + return; + } if (!drv) { error_setg(errp, "Block driver '%s' not found or not supported", fmt); -- 2.26.2