From patchwork Thu Nov 12 23:06:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Alex Williamson X-Patchwork-Id: 11902229 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AEF21138B for ; Thu, 12 Nov 2020 23:08:20 +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 3CF9220797 for ; Thu, 12 Nov 2020 23:08:20 +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="gV4wuBgq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3CF9220797 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:38212 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kdLhT-0000Q0-14 for patchwork-qemu-devel@patchwork.kernel.org; Thu, 12 Nov 2020 18:08:19 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51610) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kdLfr-0007RC-VR for qemu-devel@nongnu.org; Thu, 12 Nov 2020 18:06:39 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:49134) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kdLfq-0005Xd-Ca for qemu-devel@nongnu.org; Thu, 12 Nov 2020 18:06:39 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605222394; 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=xEZzBoUQ7qGKkcK1oxsvTD2HQhsJctzm4yku9y5OCAw=; b=gV4wuBgqX2MZght87p2QZ50Rb4fV1p6pzlMBvaP5eCXNAAzOxDmQ6QqhDt3rEQeiOfn4lY KDGO+q557z6Zx+zMQZ3C9Rd1gbxXHUGdtJnyljjzQILb97Nk8rsz8Dw8rywXwF4ihfByu/ BT8H3DxHXL1cNbP7OHG5XQtMDepjfEc= 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-471-1AVAtIsbOdWLy90BOg1Cig-1; Thu, 12 Nov 2020 18:06:31 -0500 X-MC-Unique: 1AVAtIsbOdWLy90BOg1Cig-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9FE2F192AB60; Thu, 12 Nov 2020 23:06:30 +0000 (UTC) Received: from gimli.home (ovpn-112-213.phx2.redhat.com [10.3.112.213]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0122E6EF50; Thu, 12 Nov 2020 23:06:26 +0000 (UTC) Subject: [PULL 1/1] Fix use after free in vfio_migration_probe From: Alex Williamson To: qemu-devel@nongnu.org Date: Thu, 12 Nov 2020 16:06:26 -0700 Message-ID: <160522236242.22563.14708258644629839877.stgit@gimli.home> In-Reply-To: <160522223115.22563.1877553897618141184.stgit@gimli.home> References: <160522223115.22563.1877553897618141184.stgit@gimli.home> User-Agent: StGit/0.21-dirty MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=alex.williamson@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=alex.williamson@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/12 08:00:44 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: Philippe =?utf-8?q?Mathieu-Daud=C3=A9?= , Kirti Wankhede , Alex =?utf-8?q?Benn=C3=A9e?= , David Edmondson Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Kirti Wankhede Fixes Coverity issue: CID 1436126: Memory - illegal accesses (USE_AFTER_FREE) Fixes: a9e271ec9b36 ("vfio: Add migration region initialization and finalize function") Signed-off-by: Kirti Wankhede Reviewed-by: David Edmondson Reviewed-by: Alex Bennée Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Alex Williamson --- hw/vfio/migration.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 3ce285ea395d..55261562d4f3 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -897,8 +897,8 @@ int vfio_migration_probe(VFIODevice *vbasedev, Error **errp) goto add_blocker; } - g_free(info); trace_vfio_migration_probe(vbasedev->name, info->index); + g_free(info); return 0; add_blocker: