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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 63970C433E0 for ; Mon, 15 Mar 2021 18:31:14 +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 03D3B64F26 for ; Mon, 15 Mar 2021 18:31:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 03D3B64F26 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]:33654 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lLrzk-0001RG-V5 for qemu-devel@archiver.kernel.org; Mon, 15 Mar 2021 14:31:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34972) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lLrYX-0002D2-6Q for qemu-devel@nongnu.org; Mon, 15 Mar 2021 14:03:05 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:31203) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1lLrYR-0000ZH-9a for qemu-devel@nongnu.org; Mon, 15 Mar 2021 14:03:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615831378; 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=nqJow56vo8H02Enc88863yrq478CXxEGIatZH3j+5VQ=; b=XzAEuMABuEkWOw6SH4mh+FYcM8dV1FExXQnVZfcugt4uQJt0BqgzlhJcTETl2uKse5mqUi +6gjBAUbAnHk/tEaC6EgcnWrYnmJNMae+os7vXOp04nxAxq/No5KO1ZmnyMA/gIu7xpYvb 9SDNQngt/was9afnVM8dgUJYWc6JH3o= 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-320-kvh3sQyDNGKI6BS1ZDt_zQ-1; Mon, 15 Mar 2021 14:02:53 -0400 X-MC-Unique: kvh3sQyDNGKI6BS1ZDt_zQ-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 ADB2E801FCE; Mon, 15 Mar 2021 18:02:52 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-141.ams2.redhat.com [10.36.112.141]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6B8145D9C0; Mon, 15 Mar 2021 18:02:52 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id AF5E71800843; Mon, 15 Mar 2021 19:02:41 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PULL 13/13] usb/storage: clear csw on reset Date: Mon, 15 Mar 2021 19:02:40 +0100 Message-Id: <20210315180240.1597240-14-kraxel@redhat.com> In-Reply-To: <20210315180240.1597240-1-kraxel@redhat.com> References: <20210315180240.1597240-1-kraxel@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=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=63.128.21.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.25, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, 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: libvir-list@redhat.com, Huacai Chen , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , Paolo Bonzini , Samuel Thibault , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Stale data in csw (specifically residue) can confuse the state machine and allows the guest trigger an assert(). So clear csw on reset to avoid this happening in case the guest resets the device in the middle of a request. Buglink: https://bugs.launchpad.net/qemu/+bug/1523811 Signed-off-by: Gerd Hoffmann Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20210312094954.796799-1-kraxel@redhat.com> --- hw/usb/dev-storage.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c index 7b587ad051ff..dca62d544fe9 100644 --- a/hw/usb/dev-storage.c +++ b/hw/usb/dev-storage.c @@ -313,6 +313,7 @@ void usb_msd_handle_reset(USBDevice *dev) usb_msd_packet_complete(s); } + memset(&s->csw, 0, sizeof(s->csw)); s->mode = USB_MSDM_CBW; } -- 2.29.2