From nobody Wed Nov 27 16:40:19 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697785375; cv=none; d=zohomail.com; s=zohoarc; b=QHSPxtQexLbUnE06pD7N1f3C5b4kEX9s/yFCONaY11svy4d041DAiTyytT9gt3/Rss/m7T+DgjIaU+QmePRqa0gw6TPaX9UH2V9gNcZB0nD/ReYywK5gcXiFHWG089Y4r2XB7ZbVgh0Px1T86pXbN7IwibRKMYYheHUZeWUFdcU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1697785375; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=b9pXnfvE217MgZiA1KwQf4E/+MFgK3AhJc1q/dcWL9Q=; b=QwSNSa96CrI4iVdGiTaGD+athGhQtNPKkYusBHt79lazwHzEUBRRKmGY/+MaXUABbKbTE7DzaFM8ZY/ByA9LKklBQY1TmCW/EABCd18/Kf6KtN5ZJlmy5RYf5aO9rIE1zeWIfYwCLeXFbzyf2y8kqHhaHmHDsWFpDOJuyNtl7hw= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1697785375836809.0560161740541; Fri, 20 Oct 2023 00:02:55 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qtjT6-0002eb-5s; Fri, 20 Oct 2023 02:58:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qtjT3-0002bT-Hx for qemu-devel@nongnu.org; Fri, 20 Oct 2023 02:58:45 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qtjT2-0003X4-0I for qemu-devel@nongnu.org; Fri, 20 Oct 2023 02:58:45 -0400 Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-151-Gl8yl_f-MbqeImRuS8JXLA-1; Fri, 20 Oct 2023 02:58:23 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D3D2B88B770; Fri, 20 Oct 2023 06:58:21 +0000 (UTC) Received: from secure.mitica (unknown [10.39.194.127]) by smtp.corp.redhat.com (Postfix) with ESMTP id 104A325C1; Fri, 20 Oct 2023 06:58:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697785123; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=b9pXnfvE217MgZiA1KwQf4E/+MFgK3AhJc1q/dcWL9Q=; b=DAyfd1DLSPXfe0jz0GSV8WEyz6N2yYY6WBRlxaDFHqV386ekoee/3E61W1n2cVzDeFRn4F NDc/lvvMNoK5S+SYpt9oZdFtnZ20CSJIO+0Y0Wt9ymNo2/W+DKWkaFknbghli+W7vqWTpP uBReFhQh/hKEPWI6n2l18B2Mc5s/+no= X-MC-Unique: Gl8yl_f-MbqeImRuS8JXLA-1 From: Juan Quintela To: qemu-devel@nongnu.org Cc: qemu-s390x@nongnu.org, =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Halil Pasic , "Denis V. Lunev" , Juan Quintela , Fam Zheng , kvm@vger.kernel.org, Harsh Prateek Bora , Nicholas Piggin , Christian Borntraeger , Eric Farman , Kevin Wolf , David Hildenbrand , Jason Wang , Sunil Muthuswamy , David Gibson , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Stefan Hajnoczi , Jagannathan Raman , qemu-arm@nongnu.org, Alex Williamson , Reinoud Zandijk , Thomas Huth , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Paolo Bonzini , "Michael S. Tsirkin" , Elena Ufimtseva , qemu-ppc@nongnu.org, Ilya Leoshkevich , Stefan Berger , Stefan Weil , Peter Xu , Christian Schoenebeck , Peter Maydell , Gerd Hoffmann , Richard Henderson , Jeff Cody , Laurent Vivier , Hanna Reitz , Marcelo Tosatti , Leonardo Bras , Fabiano Rosas , Daniel Henrique Barboza , Greg Kurz , qemu-block@nongnu.org Subject: [PULL 03/17] migration: Fix parse_ramblock() on overwritten retvals Date: Fri, 20 Oct 2023 08:57:37 +0200 Message-ID: <20231020065751.26047-4-quintela@redhat.com> In-Reply-To: <20231020065751.26047-1-quintela@redhat.com> References: <20231020065751.26047-1-quintela@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.1 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1697785378513100001 Content-Type: text/plain; charset="utf-8" From: Peter Xu It's possible that some errors can be overwritten with success retval later on, and then ignored. Always capture all errors and report. Reported by Coverity 1522861, but actually I spot one more in the same function. Fixes: CID 1522861 Signed-off-by: Peter Xu Reviewed-by: Fabiano Rosas Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela Message-ID: <20231017203855.298260-1-peterx@redhat.com> --- migration/ram.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/migration/ram.c b/migration/ram.c index 16c30a9d7a..92769902bb 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3873,6 +3873,7 @@ static int parse_ramblock(QEMUFile *f, RAMBlock *bloc= k, ram_addr_t length) ret =3D qemu_ram_resize(block, length, &local_err); if (local_err) { error_report_err(local_err); + return ret; } } /* For postcopy we need to check hugepage sizes match */ @@ -3883,7 +3884,7 @@ static int parse_ramblock(QEMUFile *f, RAMBlock *bloc= k, ram_addr_t length) error_report("Mismatched RAM page size %s " "(local) %zd !=3D %" PRId64, block->idstr, block->page_size, remote_page_size); - ret =3D -EINVAL; + return -EINVAL; } } if (migrate_ignore_shared()) { @@ -3893,7 +3894,7 @@ static int parse_ramblock(QEMUFile *f, RAMBlock *bloc= k, ram_addr_t length) error_report("Mismatched GPAs for block %s " "%" PRId64 "!=3D %" PRId64, block->idstr, (uint64_t)addr, (uint64_t)block->mr->addr); - ret =3D -EINVAL; + return -EINVAL; } } ret =3D rdma_block_notification_handle(f, block->idstr); --=20 2.41.0