From owner-freebsd-alpha@FreeBSD.ORG Thu Apr 15 22:01:48 2004 Return-Path: Delivered-To: freebsd-alpha@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D516D16A4CF for ; Thu, 15 Apr 2004 22:01:48 -0700 (PDT) Received: from host117.ipowerweb.com (host117.ipowerweb.com [12.129.237.159]) by mx1.FreeBSD.org (Postfix) with SMTP id B000343D5C for ; Thu, 15 Apr 2004 22:01:48 -0700 (PDT) (envelope-from alc@imimic.com) Received: (qmail 20665 invoked from network); 16 Apr 2004 05:07:34 -0000 Received: from unknown (HELO imimic.com) (216.63.78.18) by host117.ipowerweb.com with SMTP; 16 Apr 2004 05:07:34 -0000 Message-ID: <407F68BA.6000405@imimic.com> Date: Fri, 16 Apr 2004 00:01:46 -0500 From: "Alan L. Cox" Organization: iMimic Networking, Inc. User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.6a) Gecko/20031207 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Kris Kennaway References: <20040411093343.GA89809@xor.obsecurity.org> <200404132236.20792.jhb@FreeBSD.org> <16509.42895.49213.222503@grasshopper.cs.duke.edu> <20040416045453.GA78366@xor.obsecurity.org> In-Reply-To: <20040416045453.GA78366@xor.obsecurity.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: alc@FreeBSD.org cc: alpha@FreeBSD.org cc: Andrew Gallatin Subject: Re: Another alpha panic X-BeenThere: freebsd-alpha@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the Alpha List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 16 Apr 2004 05:01:48 -0000 Kris Kennaway wrote: > On Wed, Apr 14, 2004 at 05:05:19PM -0400, Andrew Gallatin wrote: > >>John Baldwin writes: >> > On Sunday 11 April 2004 05:33 am, Kris Kennaway wrote: >> > > Not that I've had any luck getting someone to take a look at the last >> > > half-dozen alpha panics I've reported, but: >> > > >> > > panic: pmap_emulate_reference(0xfffffc0019436a00, 0xfffffe0014495e68, 0, >> > > 1): pa 0xb0a0000 not managed at line 2585 in file >> > > /a/asami/portbuild/alpha/src-client/sys/alpha/alpha/pmap.c Stack backtrace: >> > > db_print_backtrace() at db_print_backtrace+0x18 >> > > backtrace() at backtrace+0x2c >> > > __panic() at __panic+0x150 >> > > pmap_emulate_reference() at pmap_emulate_reference+0x15c >> > > trap() at trap+0x39c >> > > XentMM() at XentMM+0x2c >> > > --- memory management fault (from ipl 7) --- >> > > pmap_activate() at pmap_activate+0xb4 >> > > Lcs1() at Lcs1+0x1c >> > > --- root of call graph --- >> > >> > This is a VM-related panic. Perhaps alc@ might have an idea. There might be >> > a reference fault on a K0SEG address or some other silly bug. >> >>I just googled and saw that at least 2 of these have come with the >>same stack (context-switch(), pmap_activate()). What does >>pmap_activate+0xb4 map to in your kernel? > > > 0xfffffc00005cf164 is in pmap_activate (/a/asami/portbuild/alpha/src-client/sys/alpha/alpha/pmap.c:2740). > > This is a kernel from Mar 6. > Can you confirm that this corresponds to if (td == curthread) { alpha_pal_swpctx((u_long)td->td_md.md_pcbpaddr); } ?