From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EA765C43458 for ; Tue, 7 Jul 2026 06:29:45 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wgzJG-00010O-K7; Tue, 07 Jul 2026 02:29:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wgzJF-0000zo-0V for qemu-devel@nongnu.org; Tue, 07 Jul 2026 02:29:33 -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 1wgzJD-0006SU-71 for qemu-devel@nongnu.org; Tue, 07 Jul 2026 02:29:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1783405770; 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=AK8st6ZsSR9rdtKS3UXX81Tfh/+SrtFP6nIEbY2Os24=; b=ZlgyI7EaZcGqkqURKEFLwHD/qAeMr3TYO9Ag2vUIX2TnUj8UyovtPYx8E02toQIfUfSk3V CDaM26/BaWjWtYeYxiMvnfitIqfTMwte7hPvfQt8Cr6LCWhFckXlgCQK8sMlytblDwHcQr 0VgIETxkWZwxbOY2JY2Omf86iGU6j54= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-395-qQ8K3XBANVyYacDrBNL9NQ-1; Tue, 07 Jul 2026 02:29:29 -0400 X-MC-Unique: qQ8K3XBANVyYacDrBNL9NQ-1 X-Mimecast-MFC-AGG-ID: qQ8K3XBANVyYacDrBNL9NQ_1783405768 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 150031955DB7 for ; Tue, 7 Jul 2026 06:29:28 +0000 (UTC) Received: from corto.redhat.com (unknown [10.44.32.49]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id D6A151800678; Tue, 7 Jul 2026 06:29:26 +0000 (UTC) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Mario Casquero , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PULL 01/27] vfio/pci: Initialize rom_read_failed in vfio_pci_load_rom() Date: Tue, 7 Jul 2026 08:28:54 +0200 Message-ID: <20260707062920.317302-2-clg@redhat.com> In-Reply-To: <20260707062920.317302-1-clg@redhat.com> References: <20260707062920.317302-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Received-SPF: pass client-ip=170.10.129.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 8 X-Spam_score: 0.8 X-Spam_bar: / X-Spam_report: (0.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.445, 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=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Mario Casquero When vfio_device_get_region_info() fails in vfio_pci_load_rom(), the function returns without setting vdev->rom_read_failed to true, and without allocating vdev->rom. This leaves vdev->rom as NULL. Signed-off-by: Mario Casquero Reviewed-by: Cédric Le Goater Link: https://lore.kernel.org/qemu-devel/20260602070857.356526-1-mcasquer@redhat.com Signed-off-by: Cédric Le Goater --- hw/vfio/pci.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 4d822b96b530c614671551589ce3584e9598f386..68ee3ce7dc254dd045ed2c1b21bebc53a4b4e3d6 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1028,7 +1028,7 @@ static void vfio_update_msi(VFIOPCIDevice *vdev) } } -static void vfio_pci_load_rom(VFIOPCIDevice *vdev) +static bool vfio_pci_load_rom(VFIOPCIDevice *vdev) { VFIODevice *vbasedev = &vdev->vbasedev; struct vfio_region_info *reg_info = NULL; @@ -1042,7 +1042,7 @@ static void vfio_pci_load_rom(VFIOPCIDevice *vdev) if (ret != 0) { error_report("vfio: Error getting ROM info: %s", strerror(-ret)); - return; + return false; } trace_vfio_pci_load_rom(vbasedev->name, (unsigned long)reg_info->size, @@ -1053,12 +1053,11 @@ static void vfio_pci_load_rom(VFIOPCIDevice *vdev) vdev->rom_offset = reg_info->offset; if (!vdev->rom_size) { - vdev->rom_read_failed = true; error_report("vfio-pci: Cannot read device rom at %s", vbasedev->name); error_printf("Device option ROM contents are probably invalid " "(check dmesg).\nSkip option ROM probe with rombar=0, " "or load from file with romfile=\n"); - return; + return false; } vdev->rom = g_malloc(size); @@ -1114,6 +1113,8 @@ static void vfio_pci_load_rom(VFIOPCIDevice *vdev) data[6] = -csum; } } + + return true; } /* "Raw" read of underlying config space. */ @@ -1147,7 +1148,7 @@ static uint64_t vfio_rom_read(void *opaque, hwaddr addr, unsigned size) /* Load the ROM lazily when the guest tries to read it */ if (unlikely(!vdev->rom && !vdev->rom_read_failed)) { - vfio_pci_load_rom(vdev); + vdev->rom_read_failed = !vfio_pci_load_rom(vdev); } memcpy(&val, vdev->rom + addr, -- 2.54.0