From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 28 Apr 2007 23:06:21 +0100 (BST) From: Hugh Dickins Subject: Re: 2.6.21-rc7-mm2 crash: Eeek! page_mapcount(page) went negative! (-1) In-Reply-To: <20070428141024.887342bd.akpm@linux-foundation.org> Message-ID: References: <20070425225716.8e9b28ca.akpm@linux-foundation.org> <46338AEB.2070109@imap.cc> <20070428141024.887342bd.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Tilman Schmidt , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Nick Piggin List-ID: On Sat, 28 Apr 2007, Andrew Morton wrote: > > It seems wildly screwed up that we have a PageReserved() page with a pfn of > zero (!) which claims to be in a reiserfs mapping, only it isn't attached > to a reiserfs file. How the heck did that happen? It's "simply" that it somehow got a spurious page table entry 00000001. Great that it's so reproducible, I take that to mean this one is not bad RAM. Your request for a bisection is just what we want, thanks. Hugh -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org