From patchwork Sat Oct 10 07:57:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 271650 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=-9.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham 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 945C5C433E7 for ; Sat, 10 Oct 2020 08:08:16 +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 33CF2207E8 for ; Sat, 10 Oct 2020 08:08:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Wk3gvkGF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 33CF2207E8 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]:34154 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kR9vK-0002vX-Mw for qemu-devel@archiver.kernel.org; Sat, 10 Oct 2020 04:08:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41122) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kR9lJ-00046E-Km for qemu-devel@nongnu.org; Sat, 10 Oct 2020 03:57:53 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:23941) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kR9lF-0006gN-Jk for qemu-devel@nongnu.org; Sat, 10 Oct 2020 03:57:53 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1602316668; 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=OFZIkXFOAgybJAPH2U4fM+2A0t74nWu4tXE43Va7XeI=; b=Wk3gvkGFm1rbDWdCA7/zSkUtgJLChb+hHfyvTQo/9bIuF/Rb1kosO3uToS3BnczLa2Ya/D I61a20HOeGfdbWaOE4hRo4slaH3jYJoPGEkEEdPXPvReHs3aSvhNSQogVA4L+EvMykOvBH E6hlejvWM2vqeBkI2mX60R/oSLhJ3SM= 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-457-X7SbjfZqMnyTG2KI6_yx4g-1; Sat, 10 Oct 2020 03:57:46 -0400 X-MC-Unique: X7SbjfZqMnyTG2KI6_yx4g-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 68AD88030CA; Sat, 10 Oct 2020 07:57:45 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id 290236EF4F; Sat, 10 Oct 2020 07:57:45 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 13/39] qom: fix objects with improper parent type Date: Sat, 10 Oct 2020 03:57:13 -0400 Message-Id: <20201010075739.951385-14-pbonzini@redhat.com> In-Reply-To: <20201010075739.951385-1-pbonzini@redhat.com> References: <20201010075739.951385-1-pbonzini@redhat.com> 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=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/10 02:57:53 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: Sergey Nizovtsev Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Some objects accidentally inherit ObjectClass instead of Object. They compile silently but may crash after downcasting. In this patch, we introduce a coccinelle script to find broken declarations and fix them manually with proper base type. Signed-off-by: Sergey Nizovtsev Signed-off-by: Paolo Bonzini --- MAINTAINERS | 1 + include/hw/acpi/vmgenid.h | 2 +- include/hw/misc/vmcoreinfo.h | 2 +- include/net/can_host.h | 2 +- scripts/coccinelle/qom-parent-type.cocci | 26 ++++++++++++++++++++++++ 5 files changed, 30 insertions(+), 3 deletions(-) create mode 100644 scripts/coccinelle/qom-parent-type.cocci diff --git a/MAINTAINERS b/MAINTAINERS index 7ef459a33c..fcb2c03c2b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2462,6 +2462,7 @@ F: include/monitor/qdev.h F: include/qom/ F: qapi/qom.json F: qapi/qdev.json +F: scripts/coccinelle/qom-parent-type.cocci F: softmmu/qdev-monitor.c F: qom/ F: tests/check-qom-interface.c diff --git a/include/hw/acpi/vmgenid.h b/include/hw/acpi/vmgenid.h index d50fbacb8e..cb4ad37fc5 100644 --- a/include/hw/acpi/vmgenid.h +++ b/include/hw/acpi/vmgenid.h @@ -19,7 +19,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(VmGenIdState, VMGENID) struct VmGenIdState { - DeviceClass parent_obj; + DeviceState parent_obj; QemuUUID guid; /* The 128-bit GUID seen by the guest */ uint8_t vmgenid_addr_le[8]; /* Address of the GUID (little-endian) */ }; diff --git a/include/hw/misc/vmcoreinfo.h b/include/hw/misc/vmcoreinfo.h index ebada6617a..0b7b55d400 100644 --- a/include/hw/misc/vmcoreinfo.h +++ b/include/hw/misc/vmcoreinfo.h @@ -24,7 +24,7 @@ DECLARE_INSTANCE_CHECKER(VMCoreInfoState, VMCOREINFO, typedef struct fw_cfg_vmcoreinfo FWCfgVMCoreInfo; struct VMCoreInfoState { - DeviceClass parent_obj; + DeviceState parent_obj; bool has_vmcoreinfo; FWCfgVMCoreInfo vmcoreinfo; diff --git a/include/net/can_host.h b/include/net/can_host.h index 4e3ce3f954..caab71bdda 100644 --- a/include/net/can_host.h +++ b/include/net/can_host.h @@ -35,7 +35,7 @@ OBJECT_DECLARE_TYPE(CanHostState, CanHostClass, CAN_HOST) struct CanHostState { - ObjectClass oc; + Object oc; CanBusState *bus; CanBusClientState bus_client; diff --git a/scripts/coccinelle/qom-parent-type.cocci b/scripts/coccinelle/qom-parent-type.cocci new file mode 100644 index 0000000000..9afb3edd97 --- /dev/null +++ b/scripts/coccinelle/qom-parent-type.cocci @@ -0,0 +1,26 @@ +// Highlight object declarations that don't look like object class but +// accidentally inherit from it. + +@match@ +identifier obj_t, fld; +type parent_t =~ ".*Class$"; +@@ +struct obj_t { + parent_t fld; + ... +}; + +@script:python filter depends on match@ +obj_t << match.obj_t; +@@ +is_class_obj = obj_t.endswith('Class') +cocci.include_match(not is_class_obj) + +@replacement depends on filter@ +identifier match.obj_t, match.fld; +type match.parent_t; +@@ +struct obj_t { +* parent_t fld; + ... +};