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=-0.5 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 A3391C433C1 for ; Fri, 26 Mar 2021 06:53:21 +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 1CF43619FB for ; Fri, 26 Mar 2021 06:53:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1CF43619FB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:41308 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lPgLQ-0004Wb-1Y for qemu-devel@archiver.kernel.org; Fri, 26 Mar 2021 02:53:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43896) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lPgJo-0003Bx-F2 for qemu-devel@nongnu.org; Fri, 26 Mar 2021 02:51:43 -0400 Received: from mail-yb1-xb29.google.com ([2607:f8b0:4864:20::b29]:36771) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lPgJk-00019J-NS for qemu-devel@nongnu.org; Fri, 26 Mar 2021 02:51:40 -0400 Received: by mail-yb1-xb29.google.com with SMTP id w8so4877712ybt.3 for ; Thu, 25 Mar 2021 23:51:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=c0KgpzAY6iohIZ9BrVmXDa3GXo6XDAI5IdUHrv9PAYQ=; b=vMDxNXPQljuFGfDGah8pToF8z7TTnZDuyOztSWLfo8xzNvOofEL7g2jC5+98kV7WFg 0dzWgvyCFKym0cuRoVpJPd2OmiR9W+uz3NBVdPSC3mL0rBALjOEVrvObsXgJD2zPdg7/ FfTisEGadXaMZYBa0GzFC0KGSlLO5l1FtroCGs4d/a0V2zhJSCVm4dVEkrSu4CgdmA35 LFSI+goB98zqVhYyxz9FjfGHZFOCqoFXsismKmYjyPpHB0SdOfu9RsTumh/7Z1XeRgbV Me1fKW/EHXngTktAmJe5bqFkWeStfj03MJR6ld1RDbLrudmstO1beg9rT7lqfs90pNtP TuQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=c0KgpzAY6iohIZ9BrVmXDa3GXo6XDAI5IdUHrv9PAYQ=; b=TZMZ+QHEwY7ImoydOvJBWxRraWeJ+lo3TM8UnrgMbzA5/0iLttohsvNbesy5vMoIsL t3XN2E57QYEj+OCcqca9UTSQzcX0Tx6RVzPVAnfCJhSw/beBQu0Jmwi5kvpVvQTRaahf Q22el496Jk9q5ztqh8l1Aire5uT4VACJHJUECPiA7DxMMPRmnxdLCPC3yM4+quuyZZjf eZw1gEtYOTh5vPnFQlskhFOB4wISjGHgJft6uI+byZpZoy9pmmTV6MEqdjFgXFje0cY3 sZ3uPrkRxUImMYM58GWfrz5WUL3EWSrqVyCtZIVqGvIp238V5EZqqtQz95mCHMRwOooV LkwQ== X-Gm-Message-State: AOAM530XLdNqSm53p7hB0ArjoAx/aL+FY1uuYhi2Lxu+tnSm6W+n1+0M mSajXtJxlsQTCqRSyz1jovy0qJxwAc/v1fw2f24= X-Google-Smtp-Source: ABdhPJx0WOiQvuT8nYi6fUE+/Nmgg/zbRDdEqx2Q5LbnzoLDXNiKdSLSP2vVyTFezwRkBobkiPrQcfnZ3rByebsXmR0= X-Received: by 2002:a25:ed0a:: with SMTP id k10mr18708684ybh.152.1616741495651; Thu, 25 Mar 2021 23:51:35 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Bin Meng Date: Fri, 26 Mar 2021 14:51:23 +0800 Message-ID: Subject: Re: Bug with Windows tap network when running qemu-system-ppc with Mac OS 9 guest To: Howard Spoelstra Content-Type: text/plain; charset="UTF-8" Received-SPF: pass client-ip=2607:f8b0:4864:20::b29; envelope-from=bmeng.cn@gmail.com; helo=mail-yb1-xb29.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: Peter Maydell , Jason Wang , qemu-devel qemu-devel Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi Howard, On Fri, Mar 26, 2021 at 2:40 PM Howard Spoelstra wrote: > > On Fri, Mar 26, 2021 at 2:50 AM Bin Meng wrote: > > > > Hi Howard, > > > > On Fri, Mar 26, 2021 at 1:35 AM Peter Maydell wrote: > > > > > > (adding the relevant people to the cc list) > > > > > > On Thu, 25 Mar 2021 at 17:26, Howard Spoelstra wrote: > > > > > > > > Hi, > > > > > > > > When running qemu-system-ppc with Mac OS guest, the guest crashes when > > > > using a tap network connection. Openvpn 2.4.9-I601-win10 is installed > > > > with TAP-Windows 9.24.2. A tap connection called TapQemu is bridged > > > > with the default ethernet connection. It gets activated when I start > > > > qemu. > > > > > > > > To reproduce, compile qemu-system-ppc from current source and run: > > > > > > > > qemu-system-ppc.exe ^ > > > > -L pc-bios ^ > > > > -M mac99 ^ > > > > -m 128 ^ > > > > -sdl -serial stdio ^ > > > > -boot c ^ > > > > -drive file=C:\Mac-disks\9.2.img,format=raw,media=disk ^ > > > > -device sungem,netdev=network01 -netdev tap,ifname=TapQemu,id=network01 > > > > > > > > I bisected to the commit below. Thanks for looking into this. > > > > Thanks for reporting. > > > > Can you please provide some further information: > > > > 1. Does "-net user" work on Windows? > > 2. If running QEMU under Linux, does "-net tap" or "-net user" work? > > > > Regards, > > Bin > > Hello Bin, > > Thanks for getting back to me. I forgot to mention that reverting the > above patch restores functionality. And that other applications using > the same tap device work correctly. > In answer to your questions: > > 1. Yes, slirp works on Windows 10 with this setup. > 2. Yes, in Linux both tap and slirp work. Thanks! Just to be clear, the above testing was performed with commit 969e50b61a285b0cc8dea6d4d2ade3f758d5ecc7, right? > > My Windows build is done with a fully up to date msys2 installation. > > I tried to debug in Windows: > (gdb) run > Starting program: c:\qemu-master-msys2\qemu-system-ppc.exe -L pc-bios > -M mac99 -m 128 -sdl -serial stdio -boot c -drive > "file=C:\Mac-disks\9.2-usb-pci-ddk.img,format=raw,media=disk" -device > "sungem,netdev=network01" -netdev "tap,ifname=TapQemu,id=network01" -S > [New Thread 13304.0x1f00] > [New Thread 13304.0x2f84] > [New Thread 13304.0x3524] > [New Thread 13304.0x2b8c] > [New Thread 13304.0x368c] > [New Thread 13304.0x3668] > [New Thread 13304.0xf4c] > [New Thread 13304.0x49c] > [New Thread 13304.0x1d4c] > [New Thread 13304.0x7fc] > [Thread 13304.0x7fc exited with code 0] > [New Thread 13304.0x357c] > [New Thread 13304.0x7c0] > [New Thread 13304.0x3564] > [New Thread 13304.0x26f4] > [New Thread 13304.0x2f68] > > Program received signal SIGSEGV, Segmentation fault. > 0x00007ffb9edea991 in ?? () from c:\qemu-master-msys2\libglib-2.0-0.dll > (gdb) bt > #0 0x00007ffb9edea991 in ?? () from c:\qemu-master-msys2\libglib-2.0-0.dll > #1 0x000800000480bf50 in ?? () > Backtrace stopped: previous frame inner to this frame (corrupt stack?) > (gdb) > > Even before I could attach to the process. Is QEMU crashed, or the MacOS guest crashed? Regards, Bin