From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id 87EF36B004D for ; Tue, 17 Nov 2009 07:37:47 -0500 (EST) Date: Tue, 17 Nov 2009 07:36:22 -0500 From: Chris Mason Subject: Re: [BUG]2.6.27.y some contents lost after writing to mmaped file Message-ID: <20091117123622.GI27677@think> References: <2df346410911151938r1eb5c5e4q9930ac179d61ef01@mail.gmail.com> <20091117015655.GA8683@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20091117015655.GA8683@suse.de> Sender: owner-linux-mm@kvack.org To: Greg KH Cc: JiSheng Zhang , linux-kernel@vger.kernel.org, linux-mm@kvack.org, stable@kernel.org, jack@suse.cz List-ID: On Mon, Nov 16, 2009 at 05:56:55PM -0800, Greg KH wrote: > On Mon, Nov 16, 2009 at 11:38:57AM +0800, JiSheng Zhang wrote: > > Hi, > > > > I triggered a failure in an fs test with fsx-linux from ltp. It seems that > > fsx-linux failed at mmap->write sequence. > > > > Tested kernel is 2.6.27.12 and 2.6.27.39 > > Does this work on any kernel you have tested? Or is it a regression? > > > Tested file system: ext3, tmpfs. > > IMHO, it impacts all file systems. > > > > Some fsx-linux log is: > > > > READ BAD DATA: offset = 0x2771b, size = 0xa28e > > OFFSET GOOD BAD RANGE > > 0x287e0 0x35c9 0x15a9 0x80 > > operation# (mod 256) for the bad datamay be 21 > > ... > > 7828: 1257514978.306753 READ 0x23dba thru 0x25699 (0x18e0 bytes) > > 7829: 1257514978.306899 MAPWRITE 0x27eeb thru 0x2a516 (0x262c bytes) > > ******WWWW > > 7830: 1257514978.307504 READ 0x2771b thru 0x319a8 (0xa28e bytes) > > ***RRRR*** > > Correct content saved for comparison > > ... > > Are you sure that the LTP is correct? It wouldn't be the first time it > wasn't... I'm afraid fsx usually finds bugs. I thought Jan Kara recently fixed something here in ext3, does 2.6.32-rc work? -chris -- 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