From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e6.ny.us.ibm.com (e6.ny.us.ibm.com [32.97.182.146]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e1.ny.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTP id 8B72DDDD0A for ; Tue, 27 Feb 2007 06:27:56 +1100 (EST) Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236]) by e6.ny.us.ibm.com (8.13.8/8.13.8) with ESMTP id l1QJSYDm032267 for ; Mon, 26 Feb 2007 14:28:34 -0500 Received: from d01av02.pok.ibm.com (d01av02.pok.ibm.com [9.56.224.216]) by d01relay04.pok.ibm.com (8.13.8/8.13.8/NCO v8.2) with ESMTP id l1QJRon4288732 for ; Mon, 26 Feb 2007 14:27:50 -0500 Received: from d01av02.pok.ibm.com (loopback [127.0.0.1]) by d01av02.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id l1QJRn1O023626 for ; Mon, 26 Feb 2007 14:27:50 -0500 Subject: Re: Make sure we populate the initroot filesystem late enough From: john stultz To: David Woodhouse In-Reply-To: <1172448057.3971.9.camel@shinybook.infradead.org> References: <200612112059.kBBKx1j7022473@hera.kernel.org> <1172448057.3971.9.camel@shinybook.infradead.org> Content-Type: text/plain Date: Mon, 26 Feb 2007 11:27:47 -0800 Message-Id: <1172518068.15970.6.camel@localhost> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org, torvalds@linux-foundation.org, Linux Kernel Mailing List List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Sun, 2007-02-25 at 19:00 -0500, David Woodhouse wrote: > On Mon, 2006-12-11 at 20:59 +0000, Linux Kernel Mailing List wrote: > > > > Make sure we populate the initroot filesystem late enough > > This seems to be what's triggering the apparent memory corruption we've > been seeing recently -- in the case of the Fedora kernel it manifests > itself as a BUG() in cache_alloc_refill() when the pmac ide driver > initialises. > > Another report was at http://lkml.org/lkml/2006/12/17/4 > > We've been seeing it on a Mac Mini too, and I managed to reproduce it on > my shinybook this evening by booting with 'mem=512M'. Just for reference (as its not in the thread linked above), this issue disappeared for me after some config changes (I somehow changed my selection when I backtracked and then moved forward w/ git bisect). I've not been able to reproduce it since, but I know others (BCC'ed on this note) have seen it and might prod them to come forth with details (and broken .config files) thanks -john