From patchwork Sat Dec 14 09:45:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 11292175 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 5F396175D for ; Sat, 14 Dec 2019 09:57:58 +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 31CC820700 for ; Sat, 14 Dec 2019 09:57:58 +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="HshiFcgx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 31CC820700 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]:57886 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ig4BR-0002QK-6j for patchwork-qemu-devel@patchwork.kernel.org; Sat, 14 Dec 2019 04:57:57 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:33638) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ig40I-0005E6-Ud for qemu-devel@nongnu.org; Sat, 14 Dec 2019 04:46:28 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ig40H-0006Tp-JR for qemu-devel@nongnu.org; Sat, 14 Dec 2019 04:46:26 -0500 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:46324 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ig40F-0006Mc-MZ for qemu-devel@nongnu.org; Sat, 14 Dec 2019 04:46:23 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1576316781; 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=NUXGDBlQgXoYfeFlI09A6bJOwoS+zELlXbUsMOsd9hg=; b=HshiFcgxCl7ugL5/lL93LEGoxiYiD1TSbBH3vHVVem36NLAW1UUtF8K+nXw5jaZX9cEOD9 MflO18ISwcGKAFekC0GJAHho+aNEYb+miHotwszDgp7IzsLH/2UR67jGl2K5oqg7ORwI7X whGGP0+1AZTsKjzr4RrbYizqi5i83Xs= 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-32-5-NJ2EcyPieO_6J_sSoCDw-1; Sat, 14 Dec 2019 04:46:20 -0500 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 1AAF0800D4C; Sat, 14 Dec 2019 09:46:19 +0000 (UTC) Received: from localhost (ovpn-116-90.ams2.redhat.com [10.36.116.90]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6038D77BF3; Sat, 14 Dec 2019 09:46:16 +0000 (UTC) From: Cornelia Huck To: Peter Maydell Subject: [PULL v2 14/16] s390x/cpumodel: Fix query-cpu-definitions error API violations Date: Sat, 14 Dec 2019 10:45:24 +0100 Message-Id: <20191214094526.8698-15-cohuck@redhat.com> In-Reply-To: <20191214094526.8698-1-cohuck@redhat.com> References: <20191214094526.8698-1-cohuck@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: 5-NJ2EcyPieO_6J_sSoCDw-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.61 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: Cornelia Huck , qemu-s390x@nongnu.org, David Hildenbrand , qemu-devel@nongnu.org, Markus Armbruster Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Markus Armbruster qmp_query_cpu_definitions() passes @errp to get_max_cpu_model(), then frees any error it gets back. This effectively ignores errors. Dereferencing @errp is wrong; see the big comment in error.h. Passing @errp is also wrong, because it works only as long as @errp is neither @error_fatal nor @error_abort. Introduced in commit 38cba1f4d8 "s390x: return unavailable features via query-cpu-definitions". No caller actually passes such @errp values. Fix anyway: simply pass NULL to get_max_cpu_model(). Cc: David Hildenbrand Cc: Cornelia Huck Signed-off-by: Markus Armbruster Reviewed-by: David Hildenbrand Message-Id: <20191204093625.14836-16-armbru@redhat.com> Signed-off-by: Cornelia Huck --- target/s390x/cpu_models.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c index 3ed301b5e509..547bab8ac392 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -462,11 +462,7 @@ CpuDefinitionInfoList *qmp_query_cpu_definitions(Error **errp) .list = NULL, }; - list_data.model = get_max_cpu_model(errp); - if (*errp) { - error_free(*errp); - *errp = NULL; - } + list_data.model = get_max_cpu_model(NULL); object_class_foreach(create_cpu_model_list, TYPE_S390_CPU, false, &list_data);