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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 6B151C004D4 for ; Thu, 19 Jan 2023 11:33:57 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pITAm-0000D1-1t; Thu, 19 Jan 2023 06:33:36 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pITAk-0000Cb-AA for qemu-devel@nongnu.org; Thu, 19 Jan 2023 06:33:34 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pITAi-0004hi-8Y for qemu-devel@nongnu.org; Thu, 19 Jan 2023 06:33:34 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674128010; h=from:from:reply-to: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=k6MZPCYHGjlnLswrBCquBvGgvH0bXsekOCybC65WkKE=; b=FAenBX7WwqRTZmKT+9FlMv2kA6eVbpRusSHrQRJkgSpMQotzPIQb2MQG9R9k9WhBtb2FzS UZeV2wJSj5nUCC+Uubh04xcdcC++h4Can93tZCtoGgqSiuMXDjuXymxdHe13GR/MBADmLk dN1ZrnsQZFLhGViVLQwAWviAkoZBcbk= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-360-FdZ42CQVMhWNUoyWTRQPCQ-1; Thu, 19 Jan 2023 06:33:27 -0500 X-MC-Unique: FdZ42CQVMhWNUoyWTRQPCQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 727B018A6461; Thu, 19 Jan 2023 11:33:27 +0000 (UTC) Received: from redhat.com (unknown [10.33.36.79]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A066A40C6EC4; Thu, 19 Jan 2023 11:33:14 +0000 (UTC) Date: Thu, 19 Jan 2023 11:33:12 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= Cc: =?utf-8?Q?Marc-Andr=C3=A9?= Lureau , QEMU Developers , Thomas Huth , Gerd Hoffmann Subject: Re: tests/qtest: Is vnc-display-test supposed to work on Darwin? Message-ID: References: <9b81a6f2-7bf9-4ada-d7ba-c8a9dffcb2d3@linaro.org> <60569516-bd5a-b124-e105-8a9ab9f43c89@linaro.org> <7a46cdc2-42b7-a71d-5c00-a7b6e30d2622@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <7a46cdc2-42b7-a71d-5c00-a7b6e30d2622@linaro.org> User-Agent: Mutt/2.2.9 (2022-11-12) X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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_H2=-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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Thu, Jan 19, 2023 at 12:21:58PM +0100, Philippe Mathieu-Daudé wrote: > On 19/1/23 12:16, Daniel P. Berrangé wrote: > > On Thu, Jan 19, 2023 at 12:01:18PM +0100, Philippe Mathieu-Daudé wrote: > > > On 5/12/22 08:51, Marc-André Lureau wrote: > > > > On Fri, Dec 2, 2022 at 1:51 PM Philippe Mathieu-Daudé wrote: > > > > > > > > > > The vnc-display-test is failing on Darwin: > > > > > > > > > > tests/qtest/vnc-display-test:45038): ERROR **: 10:42:35.488: vnc-error: > > > > > Unsupported auth type 17973672 > > > > > > > > It is supposed to pass. Can you share more details? It doesn't look > > > > like an endianness issue, at first sight.. > > > > > > Adding '-trace vnc*' and setting _VNC_DEBUG in "vnc.h" I get: > > > > Bail out! FATAL-ERROR: vnc-error: Unsupported auth type 5489072 > > > > ^^^^ This specific message is comnig from the gtk-vnc client rather > > than QEMU > > > > Still doesn't tell us if the flaw is server or client side. The > > logs from QEMU are insufficient. In theory it should be reporting > > auth type == 0 though, for 'no auth' configs. > > > > Does that help? What else can I do to gather more info? > > > > Modify vnc-display-test.c to call vnc_util_set_debug(TRUE); > > before vnc_connection_new(), to get the gtk-vnc debug logs > > to stderr too. > Here you go: > > vnc_server_dpy_recreate VNC server dpy recreate dpy=0x1588b8000 size=640x384 > fmt=537004168 > vnc_auth_init VNC auth init state=0x1588b8000 websock=0 auth=1 subauth=0 > vnc_auth_init VNC auth init state=0x1588b8000 websock=1 auth=1 subauth=0 > vnc_client_connect VNC client connect state=0x1484b0000 ioc=0x152e667f0 > # gtk-vnc-DEBUG: ../src/vncconnection.c Init VncConnection=0x14f0168b0 > gtk-vnc-DEBUG: 12:20:30.482: ../src/vncconnection.c Init > VncConnection=0x14f0168b0 > # gtk-vnc-DEBUG: ../src/vncconnection.c Thinking about auth type 1 > gtk-vnc-DEBUG: 12:20:30.482: ../src/vncconnection.c Thinking about auth type > 1 > # gtk-vnc-DEBUG: ../src/vncconnection.c Decided on auth type 1 > gtk-vnc-DEBUG: 12:20:30.482: ../src/vncconnection.c Decided on auth type 1 So here we set conn->auth_type == 1 > # gtk-vnc-DEBUG: ../src/vncconnection.c Open fd=4 > gtk-vnc-DEBUG: 12:20:30.482: ../src/vncconnection.c Open fd=4 > # gtk-vnc-DEBUG: ../src/vncconnection.c Open coroutine starting > gtk-vnc-DEBUG: 12:20:30.482: ../src/vncconnection.c Open coroutine starting > # gtk-vnc-DEBUG: ../src/vncconnection.c Started background coroutine > gtk-vnc-DEBUG: 12:20:30.484: ../src/vncconnection.c Started background > coroutine > # gtk-vnc-DEBUG: ../src/vncconnection.c Connecting to FD 4 > gtk-vnc-DEBUG: 12:20:30.484: ../src/vncconnection.c Connecting to FD 4 > # gtk-vnc-DEBUG: ../src/vncconnection.c Emit main context 16 > gtk-vnc-DEBUG: 12:20:30.485: ../src/vncconnection.c Emit main context 16 > # gtk-vnc-DEBUG: ../src/vncconnection.c Protocol initialization > gtk-vnc-DEBUG: 12:20:30.485: ../src/vncconnection.c Protocol initialization > # gtk-vnc-DEBUG: ../src/vncconnection.c Schedule greeting timeout > 0x14f0155e0 > gtk-vnc-DEBUG: 12:20:30.485: ../src/vncconnection.c Schedule greeting > timeout 0x14f0155e0 > # gtk-vnc-DEBUG: ../src/vncconnection.c Remove timeout 0x14f0155e0 > gtk-vnc-DEBUG: 12:20:30.485: ../src/vncconnection.c Remove timeout > 0x14f0155e0 > # gtk-vnc-DEBUG: ../src/vncconnection.c Server version: 3.8 > gtk-vnc-DEBUG: 12:20:30.485: ../src/vncconnection.c Server version: 3.8 > # gtk-vnc-DEBUG: ../src/vncconnection.c Sending full greeting > gtk-vnc-DEBUG: 12:20:30.485: ../src/vncconnection.c Sending full greeting > # gtk-vnc-DEBUG: ../src/vncconnection.c Using version: 3.8 > gtk-vnc-DEBUG: 12:20:30.485: ../src/vncconnection.c Using version: 3.8 > # gtk-vnc-DEBUG: ../src/vncconnection.c Possible auth 1 > gtk-vnc-DEBUG: 12:20:30.589: ../src/vncconnection.c Possible auth 1 > # gtk-vnc-DEBUG: ../src/vncconnection.c Emit main context 14 > gtk-vnc-DEBUG: 12:20:30.589: ../src/vncconnection.c Emit main context 14 > # gtk-vnc-DEBUG: ../src/vncconnection.c Waiting for auth type > gtk-vnc-DEBUG: 12:20:30.589: ../src/vncconnection.c Waiting for auth type > # gtk-vnc-DEBUG: ../src/vncconnection.c Choose auth 10486192 Here we've read conn->auth_type and got back 10486192 nonsense instead of 1. Interestingly this value is differetn from the previous debug log which reported 5489072, so i guess we're getting garbage here for unknown reasons. This looks like a gtk-vnc problem rather than QEMU. I'm a little worried that perhaps the gtk-vnc ucontext coroutine backend is broken on macOS What coroutine backend does QEMU end up using on macOS ? Is it the sigaltstack one ? With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|