From owner-freebsd-emulation@FreeBSD.ORG Mon Jul 9 19:18:05 2007 Return-Path: X-Original-To: freebsd-emulation@freebsd.org Delivered-To: freebsd-emulation@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id C8B4C16A46B for ; Mon, 9 Jul 2007 19:18:05 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from ik-out-1112.google.com (ik-out-1112.google.com [66.249.90.176]) by mx1.freebsd.org (Postfix) with ESMTP id 5A21213C4C5 for ; Mon, 9 Jul 2007 19:18:05 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: by ik-out-1112.google.com with SMTP id c21so689864ika for ; Mon, 09 Jul 2007 12:18:04 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=ca5+OKBHqdt0a6fLk5Lor2O5EknxcvYL/PgGwKNTfM6Go2u7MR+m3LsrQivLuo/mYbGSJ9OYugYyGJK3/hbzdX1ZoNmxnH40TmWokl8eKKofbx6fE9zjc069E2Dexzdhko1CF0Jq548d/D+dFZDuodQtvSSGFDheaVq7j1nBd7k= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=kdAm4MpjySKnmNQXkdGcDVrRQgsunOCPQLbWbcwuCwslVii1JIrj5zfkkVTntfx53Mdk5alvqar/MimyzzrNW+3otT35Qe4ZO81InmssvRCYZzcsLNV4jVw+NuiOy4zVJ+JFegXEjCC4hLHuDuBhjodfFfgr8BS6i6ZvRyNUgeo= Received: by 10.78.130.6 with SMTP id c6mr1764015hud.1184008683762; Mon, 09 Jul 2007 12:18:03 -0700 (PDT) Received: by 10.78.97.18 with HTTP; Mon, 9 Jul 2007 12:18:03 -0700 (PDT) Message-ID: <3bbf2fe10707091218p713b7e3ela2833eec0ba2df13@mail.gmail.com> Date: Mon, 9 Jul 2007 21:18:03 +0200 From: "Attilio Rao" Sender: asmrookie@gmail.com To: "Doug Rabson" In-Reply-To: <200707092000.29768.dfr@rabson.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070702203027.GA45302@saturn.kn-bremen.de> <46925324.9010908@freebsd.org> <3bbf2fe10707091140h6cdc7469nac5be03a8c8a60cb@mail.gmail.com> <200707092000.29768.dfr@rabson.org> X-Google-Sender-Auth: 20c4ce3df9986996 Cc: freebsd-emulation@freebsd.org Subject: Re: experimental qemu-devel port update, please test! X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Jul 2007 19:18:05 -0000 2007/7/9, Doug Rabson : > On Monday 09 July 2007, Attilio Rao wrote: > > 2007/7/9, Eric Anderson : > > > Fatal trap 12: page fault while in kernel mode > > > cpuid = 0; apic id = 00 > > > fault virtual address = 0x82 > > > fault code = supervisor read, page not present > > > instruction pointer = 0x20:0xc0928f00 > > > stack pointer = 0x28:0xe57b7a3c > > > frame pointer = 0x28:0xe57b7a50 > > > code segment = base 0x0, limit 0xfffff, type 0x1b > > > = DPL 0, pres 1, def32 1, gran 1 > > > processor eflags = interrupt enabled, resume, IOPL = 0 > > > current process = 69 (qemu) > > > > > > > > > #9 0xc0928f00 in _vm_map_lock (map=0x1, file=0x0, line=0) at > > > /usr/src/sys/vm/vm_map.c:421 > > > #10 0xc092986d in vm_map_wire (map=0x1, start=677306368, > > > end=677310464, flags=1) at /usr/src/sys/vm/vm_map.c:1964 > > > > Please also note that stack here seems highly corrupted since values > > passed to _vm_map_lock are not possible (or there is something > > serious going on with them). > > I had this exact same crash when attempting to use kqemu on a recent > current. It appears as if the value it got for curproc was bad. Is > kqemu messing with the kernel's %fs value perhaps? I don't know about kqemu, but in this case I would expect sorta of larger corruption due to the wider pcpu accesses done through %fs. Attilio -- Peace can only be achieved by understanding - A. Einstein