From patchwork Thu Jul 2 11:09:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 278866 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=-6.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED 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 B579DC433DF for ; Thu, 2 Jul 2020 11:24:15 +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 703DF208B8 for ; Thu, 2 Jul 2020 11:24:15 +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="S/JmFm4Z" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 703DF208B8 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]:57270 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jqxKA-0006b1-Mw for qemu-devel@archiver.kernel.org; Thu, 02 Jul 2020 07:24:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52850) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jqx6O-0007Cn-9b for qemu-devel@nongnu.org; Thu, 02 Jul 2020 07:10:00 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:39709 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 1jqx6F-00015e-0t for qemu-devel@nongnu.org; Thu, 02 Jul 2020 07:09:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593688190; 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=Wn3kwFEJl/Bj3DyGSC9Ym5Af14YMAfXCNhQhIwLFw8Q=; b=S/JmFm4ZZhGqteMwa9YFejBLVK+NNXw6ITtasqnRm5R9f/FuRA9drid18RMriTt0VAY2yA aI4vNOlaL6cFhvB3KSvAtlx4keQDsridr9jP/VUvNSFThrAEGTIDMlvjHSCPGNgEeieKTN zAzUwG0qittkpNsvV1QHBHLbKD1EEGE= 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-354-IJ9peEyVM0OsdhxIzrU8sQ-1; Thu, 02 Jul 2020 07:09:48 -0400 X-MC-Unique: IJ9peEyVM0OsdhxIzrU8sQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2864F8015F6; Thu, 2 Jul 2020 11:09:46 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-143.ams2.redhat.com [10.36.112.143]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 05A061D1; Thu, 2 Jul 2020 11:09:37 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id F323A113847D; Thu, 2 Jul 2020 13:09:31 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PULL 17/28] hw: Fix error API violation around object_property_set_link() Date: Thu, 2 Jul 2020 13:09:20 +0200 Message-Id: <20200702110931.2953148-18-armbru@redhat.com> In-Reply-To: <20200702110931.2953148-1-armbru@redhat.com> References: <20200702110931.2953148-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=armbru@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.120; envelope-from=armbru@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/02 04:00:43 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 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_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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: Peter Maydell , Aleksandar Rikalo , Alistair Francis , Mark Cave-Ayland , Eric Auger , Aleksandar Markovic , qemu-arm@nongnu.org, Alistair Francis , Gerd Hoffmann , "Edgar E. Iglesias" , Aurelien Jarno Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second call. virtio_gpu_pci_base_realize(), virtio_vga_base_realize(), sparc32_ledma_device_realize(), sparc32_dma_realize(), sparc32_dma_realize() xilinx_axidma_realize(), mips_cps_realize(), macio_realize_ide(), xilinx_enet_realize(), and virtio_iommu_pci_realize() are wrong that way: they reuse the argument they pass to object_property_set_link() for another call. Harmless, because object_property_set_link() can't actually fail for them: it fails when the property doesn't exist, is not settable, or its .check() method fails. Fix by passing &error_abort instead. Cc: Gerd Hoffmann Cc: Mark Cave-Ayland Cc: "Edgar E. Iglesias" Cc: Alistair Francis Cc: Peter Maydell Cc: qemu-arm@nongnu.org Cc: Aleksandar Markovic Cc: Aurelien Jarno Cc: Aleksandar Rikalo Cc: Eric Auger Signed-off-by: Markus Armbruster Reviewed-by: Eric Auger Reviewed-by: Alistair Francis Message-Id: <20200630090351.1247703-16-armbru@redhat.com> Reviewed-by: Mark Cave-Ayland --- hw/display/virtio-gpu-pci.c | 2 +- hw/display/virtio-vga.c | 2 +- hw/dma/sparc32_dma.c | 6 +++--- hw/dma/xilinx_axidma.c | 12 ++---------- hw/mips/cps.c | 6 ++++-- hw/misc/macio/macio.c | 3 ++- hw/net/xilinx_axienet.c | 12 ++---------- hw/virtio/virtio-iommu-pci.c | 2 +- 8 files changed, 16 insertions(+), 29 deletions(-) diff --git a/hw/display/virtio-gpu-pci.c b/hw/display/virtio-gpu-pci.c index b532fe8b5f..41b88b878d 100644 --- a/hw/display/virtio-gpu-pci.c +++ b/hw/display/virtio-gpu-pci.c @@ -44,7 +44,7 @@ static void virtio_gpu_pci_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp) for (i = 0; i < g->conf.max_outputs; i++) { object_property_set_link(OBJECT(g->scanout[i].con), OBJECT(vpci_dev), - "device", errp); + "device", &error_abort); } } diff --git a/hw/display/virtio-vga.c b/hw/display/virtio-vga.c index 68a062ece6..67f409e106 100644 --- a/hw/display/virtio-vga.c +++ b/hw/display/virtio-vga.c @@ -154,7 +154,7 @@ static void virtio_vga_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp) for (i = 0; i < g->conf.max_outputs; i++) { object_property_set_link(OBJECT(g->scanout[i].con), OBJECT(vpci_dev), - "device", errp); + "device", &error_abort); } } diff --git a/hw/dma/sparc32_dma.c b/hw/dma/sparc32_dma.c index f02aca6f40..2d7dbbb92d 100644 --- a/hw/dma/sparc32_dma.c +++ b/hw/dma/sparc32_dma.c @@ -346,7 +346,7 @@ static void sparc32_ledma_device_realize(DeviceState *dev, Error **errp) d = qdev_new(TYPE_LANCE); object_property_add_child(OBJECT(dev), "lance", OBJECT(d)); qdev_set_nic_properties(d, nd); - object_property_set_link(OBJECT(d), OBJECT(dev), "dma", errp); + object_property_set_link(OBJECT(d), OBJECT(dev), "dma", &error_abort); sysbus_realize_and_unref(SYS_BUS_DEVICE(d), &error_fatal); } @@ -379,7 +379,7 @@ static void sparc32_dma_realize(DeviceState *dev, Error **errp) } espdma = qdev_new(TYPE_SPARC32_ESPDMA_DEVICE); - object_property_set_link(OBJECT(espdma), iommu, "iommu", errp); + object_property_set_link(OBJECT(espdma), iommu, "iommu", &error_abort); object_property_add_child(OBJECT(s), "espdma", OBJECT(espdma)); sysbus_realize_and_unref(SYS_BUS_DEVICE(espdma), &error_fatal); @@ -394,7 +394,7 @@ static void sparc32_dma_realize(DeviceState *dev, Error **errp) sysbus_mmio_get_region(sbd, 0)); ledma = qdev_new(TYPE_SPARC32_LEDMA_DEVICE); - object_property_set_link(OBJECT(ledma), iommu, "iommu", errp); + object_property_set_link(OBJECT(ledma), iommu, "iommu", &error_abort); object_property_add_child(OBJECT(s), "ledma", OBJECT(ledma)); sysbus_realize_and_unref(SYS_BUS_DEVICE(ledma), &error_fatal); diff --git a/hw/dma/xilinx_axidma.c b/hw/dma/xilinx_axidma.c index 6a9df2c4db..a069637bf2 100644 --- a/hw/dma/xilinx_axidma.c +++ b/hw/dma/xilinx_axidma.c @@ -537,7 +537,6 @@ static void xilinx_axidma_realize(DeviceState *dev, Error **errp) XilinxAXIDMAStreamSlave *ds = XILINX_AXI_DMA_DATA_STREAM(&s->rx_data_dev); XilinxAXIDMAStreamSlave *cs = XILINX_AXI_DMA_CONTROL_STREAM( &s->rx_control_dev); - Error *local_err = NULL; int i; object_property_add_link(OBJECT(ds), "dma", TYPE_XILINX_AXI_DMA, @@ -548,11 +547,8 @@ static void xilinx_axidma_realize(DeviceState *dev, Error **errp) (Object **)&cs->dma, object_property_allow_set_link, OBJ_PROP_LINK_STRONG); - object_property_set_link(OBJECT(ds), OBJECT(s), "dma", &local_err); - object_property_set_link(OBJECT(cs), OBJECT(s), "dma", &local_err); - if (local_err) { - goto xilinx_axidma_realize_fail; - } + object_property_set_link(OBJECT(ds), OBJECT(s), "dma", &error_abort); + object_property_set_link(OBJECT(cs), OBJECT(s), "dma", &error_abort); for (i = 0; i < 2; i++) { struct Stream *st = &s->streams[i]; @@ -567,10 +563,6 @@ static void xilinx_axidma_realize(DeviceState *dev, Error **errp) address_space_init(&s->as, s->dma_mr ? s->dma_mr : get_system_memory(), "dma"); - return; - -xilinx_axidma_realize_fail: - error_propagate(errp, local_err); } static void xilinx_axidma_init(Object *obj) diff --git a/hw/mips/cps.c b/hw/mips/cps.c index cdfab19826..5382bc86f7 100644 --- a/hw/mips/cps.c +++ b/hw/mips/cps.c @@ -150,8 +150,10 @@ static void mips_cps_realize(DeviceState *dev, Error **errp) object_property_set_int(OBJECT(&s->gcr), s->num_vp, "num-vp", &err); object_property_set_int(OBJECT(&s->gcr), 0x800, "gcr-rev", &err); object_property_set_int(OBJECT(&s->gcr), gcr_base, "gcr-base", &err); - object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->gic.mr), "gic", &err); - object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->cpc.mr), "cpc", &err); + object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->gic.mr), "gic", + &error_abort); + object_property_set_link(OBJECT(&s->gcr), OBJECT(&s->cpc.mr), "cpc", + &error_abort); sysbus_realize(SYS_BUS_DEVICE(&s->gcr), &err); if (err != NULL) { error_propagate(errp, err); diff --git a/hw/misc/macio/macio.c b/hw/misc/macio/macio.c index 8ba7af073c..3251c79f46 100644 --- a/hw/misc/macio/macio.c +++ b/hw/misc/macio/macio.c @@ -136,7 +136,8 @@ static void macio_realize_ide(MacIOState *s, MACIOIDEState *ide, sysbus_connect_irq(sysbus_dev, 0, irq0); sysbus_connect_irq(sysbus_dev, 1, irq1); qdev_prop_set_uint32(DEVICE(ide), "channel", dmaid); - object_property_set_link(OBJECT(ide), OBJECT(&s->dbdma), "dbdma", errp); + object_property_set_link(OBJECT(ide), OBJECT(&s->dbdma), "dbdma", + &error_abort); macio_ide_register_dma(ide); qdev_realize(DEVICE(ide), BUS(&s->macio_bus), errp); diff --git a/hw/net/xilinx_axienet.c b/hw/net/xilinx_axienet.c index c2f40b8ea9..679a359f9a 100644 --- a/hw/net/xilinx_axienet.c +++ b/hw/net/xilinx_axienet.c @@ -980,7 +980,6 @@ static void xilinx_enet_realize(DeviceState *dev, Error **errp) XilinxAXIEnetStreamSlave *ds = XILINX_AXI_ENET_DATA_STREAM(&s->rx_data_dev); XilinxAXIEnetStreamSlave *cs = XILINX_AXI_ENET_CONTROL_STREAM( &s->rx_control_dev); - Error *local_err = NULL; object_property_add_link(OBJECT(ds), "enet", "xlnx.axi-ethernet", (Object **) &ds->enet, @@ -990,11 +989,8 @@ static void xilinx_enet_realize(DeviceState *dev, Error **errp) (Object **) &cs->enet, object_property_allow_set_link, OBJ_PROP_LINK_STRONG); - object_property_set_link(OBJECT(ds), OBJECT(s), "enet", &local_err); - object_property_set_link(OBJECT(cs), OBJECT(s), "enet", &local_err); - if (local_err) { - goto xilinx_enet_realize_fail; - } + object_property_set_link(OBJECT(ds), OBJECT(s), "enet", &error_abort); + object_property_set_link(OBJECT(cs), OBJECT(s), "enet", &error_abort); qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic = qemu_new_nic(&net_xilinx_enet_info, &s->conf, @@ -1008,10 +1004,6 @@ static void xilinx_enet_realize(DeviceState *dev, Error **errp) s->rxmem = g_malloc(s->c_rxmem); s->txmem = g_malloc(s->c_txmem); - return; - -xilinx_enet_realize_fail: - error_propagate(errp, local_err); } static void xilinx_enet_init(Object *obj) diff --git a/hw/virtio/virtio-iommu-pci.c b/hw/virtio/virtio-iommu-pci.c index 32e3215d1d..4588361d6b 100644 --- a/hw/virtio/virtio-iommu-pci.c +++ b/hw/virtio/virtio-iommu-pci.c @@ -56,7 +56,7 @@ static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) } object_property_set_link(OBJECT(dev), OBJECT(pci_get_bus(&vpci_dev->pci_dev)), - "primary-bus", errp); + "primary-bus", &error_abort); qdev_realize(vdev, BUS(&vpci_dev->bus), errp); }