Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932827AbXABLVW (ORCPT ); Tue, 2 Jan 2007 06:21:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932838AbXABLVV (ORCPT ); Tue, 2 Jan 2007 06:21:21 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:34373 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932827AbXABLVU (ORCPT ); Tue, 2 Jan 2007 06:21:20 -0500 Date: Tue, 2 Jan 2007 11:20:54 +0000 From: Christoph Hellwig To: Ingo Molnar Cc: Linus Torvalds , Segher Boessenkool , David Miller , nickpiggin@yahoo.com.au, kenneth.w.chen@intel.com, guichaz@yahoo.fr, hugh@veritas.com, linux-kernel@vger.kernel.org, ranma@tdiedrich.de, gordonfarquharson@gmail.com, akpm@osdl.org, a.p.zijlstra@chello.nl, tbm@cyrius.com, arjan@infradead.org, andrei.popa@i-neo.ro Subject: Re: [patch] fix data corruption bug in __block_write_full_page() Message-ID: <20070102112054.GC22657@infradead.org> Mail-Followup-To: Christoph Hellwig , Ingo Molnar , Linus Torvalds , Segher Boessenkool , David Miller , nickpiggin@yahoo.com.au, kenneth.w.chen@intel.com, guichaz@yahoo.fr, hugh@veritas.com, linux-kernel@vger.kernel.org, ranma@tdiedrich.de, gordonfarquharson@gmail.com, akpm@osdl.org, a.p.zijlstra@chello.nl, tbm@cyrius.com, arjan@infradead.org, andrei.popa@i-neo.ro References: <20061228114517.3315aee7.akpm@osdl.org> <20061228.143815.41633302.davem@davemloft.net> <3d6d8711f7b892a11801d43c5996ebdf@kernel.crashing.org> <20061229121946.GA17837@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20061229121946.GA17837@elte.hu> User-Agent: Mutt/1.4.2.2i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1024 Lines: 20 On Fri, Dec 29, 2006 at 01:19:46PM +0100, Ingo Molnar wrote: > i've extended the tracer in -rt to trace all relevant pagetable, > pagecache, buffer-cache and IO events and coupled the tracer to your > test.c code. The corruption happens here: > > test-2126 0.... 3756170us+: trace_page (cf20ebd8 b6a2c000 0) > pdflush-2006 0.... 6432909us+: trace_page (cf20ebd8 b6a2c000 4200420) > test-2126 0.... 8135596us+: trace_page (cf20ebd8 b6a2c000 4200420) > test-2126 0D... 9012933us+: do_page_fault (8048900 4 b6a2c000) > test-2126 0.... 9023278us+: trace_page (cf262f24 b6a2c000 0) > test-2126 0.... 9023305us > sys_prctl (000000d8 b6a2c000 000000ac) This tracer definitly looks interesting. Could you send a splitout patch with it to lkml for review? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/