From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=57114 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PFPB1-0008Hs-IF for qemu-devel@nongnu.org; Mon, 08 Nov 2010 05:42:16 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PFPAz-00053F-Sg for qemu-devel@nongnu.org; Mon, 08 Nov 2010 05:42:15 -0500 Received: from mail-wy0-f173.google.com ([74.125.82.173]:45226) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PFPAz-00052y-OL for qemu-devel@nongnu.org; Mon, 08 Nov 2010 05:42:13 -0500 Received: by wyj26 with SMTP id 26so5797126wyj.4 for ; Mon, 08 Nov 2010 02:42:12 -0800 (PST) MIME-Version: 1.0 In-Reply-To: References: <20101106132417.2947.85131.malonedeb@palladium.canonical.com> Date: Mon, 8 Nov 2010 10:42:11 +0000 Message-ID: Subject: Re: [Qemu-devel] [Bug 671831] [NEW] Sparc guest assert error From: Stefan Hajnoczi Content-Type: text/plain; charset=ISO-8859-1 List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Bug 671831 <671831@bugs.launchpad.net> Cc: Kevin Wolf , qemu-devel@nongnu.org Hi Nigel, Is there a disk image available to reproduce this bug? I searched for Debian SPARC 2.4-based disk images but wasn't able to find one. If it's not easy to share your disk image, could you please test this QEMU tree which backports the assert: http://repo.or.cz/w/qemu/stefanha.git/shortlog/refs/heads/scsi_assert You can grab the code like this: git clone -b scsi_assert git://repo.or.cz/qemu/stefanha.git If the assert triggers in that world then data corruption was previously possible but hidden (a SCSI request has a one data buffer and concurrent reads are being issued to the same buffer!). This would mean an existing bug that needs to be fixed has been exposed. If the assert doesn't trigger, then the issue was introduced recently and we can dig more into that. Thanks! Stefan