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 X-Spam-Level: X-Spam-Status: No, score=-6.6 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 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 2F466C83003 for ; Wed, 29 Apr 2020 07:37:02 +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 EEA9D2073E for ; Wed, 29 Apr 2020 07:37:01 +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="acr/hxcO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EEA9D2073E 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]:50802 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jThHB-0008F1-2y for qemu-devel@archiver.kernel.org; Wed, 29 Apr 2020 03:37:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46224) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jTh24-0007u8-0Q for qemu-devel@nongnu.org; Wed, 29 Apr 2020 03:22:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jTh1i-0003ym-M9 for qemu-devel@nongnu.org; Wed, 29 Apr 2020 03:21:23 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:28506 helo=us-smtp-delivery-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 1jTh1h-0003vh-IG for qemu-devel@nongnu.org; Wed, 29 Apr 2020 03:21:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588144859; 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=I0CwfPL0bHAmIgroIO9vlkMhNJh/UfpvjW50OODwJ/U=; b=acr/hxcOHKYI0yrWnytTpc5dlzCa6L/2cpc3VhOBRc6jr+vD9/Eos7UiQH8nMK/7rUTrb7 zfXGojYa+ThE2ITPyZu9+ZP7cZOv9cnZEbZqZfdbuDgxlgRFfHBgfncP37KyiQyuoUhoUZ Zysm2UtvSAN0t6YqaDhtBXBFYIEzFI4= 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-174-T2-mIlrQP5229-5Zlmi-CQ-1; Wed, 29 Apr 2020 03:20:57 -0400 X-MC-Unique: T2-mIlrQP5229-5Zlmi-CQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 55FC68015CB for ; Wed, 29 Apr 2020 07:20:56 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-113-6.ams2.redhat.com [10.36.113.6]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6FC02282D8; Wed, 29 Apr 2020 07:20:53 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 2F41911358CE; Wed, 29 Apr 2020 09:20:49 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PULL 17/32] bochs-display: Fix vgamem=SIZE error handling Date: Wed, 29 Apr 2020 09:20:33 +0200 Message-Id: <20200429072048.29963-18-armbru@redhat.com> In-Reply-To: <20200429072048.29963-1-armbru@redhat.com> References: <20200429072048.29963-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=205.139.110.61; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/29 00:53:13 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] 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: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" bochs_display_realize() rejects out-of-range vgamem. The error handling is broken: $ qemu-system-x86_64 -S -display none -monitor stdio QEMU 4.2.93 monitor - type 'help' for more information (qemu) device_add bochs-display,vgamem=3D1 Error: bochs-display: video memory too small (qemu) device_add bochs-display,vgamem=3D1 RAMBlock "0000:00:04.0/bochs-display-vram" already registered, abort! Aborted (core dumped) Cause: bochs_display_realize() neglects to bail out after setting the error. Fix that. Fixes: 765c94290863eef1fc4a67819d452cc13b7854a1 Cc: Gerd Hoffmann Signed-off-by: Markus Armbruster Reviewed-by: Philippe Mathieu-Daud=C3=A9 Message-Id: <20200422130719.28225-8-armbru@redhat.com> Reviewed-by: Gerd Hoffmann --- hw/display/bochs-display.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/hw/display/bochs-display.c b/hw/display/bochs-display.c index 70eb619ef4..e763a0a72d 100644 --- a/hw/display/bochs-display.c +++ b/hw/display/bochs-display.c @@ -267,16 +267,18 @@ static void bochs_display_realize(PCIDevice *dev, Err= or **errp) Object *obj =3D OBJECT(dev); int ret; =20 - s->con =3D graphic_console_init(DEVICE(dev), 0, &bochs_display_gfx_ops= , s); - if (s->vgamem < 4 * MiB) { error_setg(errp, "bochs-display: video memory too small"); + return; } if (s->vgamem > 256 * MiB) { error_setg(errp, "bochs-display: video memory too big"); + return; } s->vgamem =3D pow2ceil(s->vgamem); =20 + s->con =3D graphic_console_init(DEVICE(dev), 0, &bochs_display_gfx_ops= , s); + memory_region_init_ram(&s->vram, obj, "bochs-display-vram", s->vgamem, &error_fatal); memory_region_init_io(&s->vbe, obj, &bochs_display_vbe_ops, s, --=20 2.21.1