From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <4CB745FC.5090504@gmail.com> Date: Thu, 14 Oct 2010 20:03:40 +0200 From: Tejun Heo MIME-Version: 1.0 Subject: Re: [PATCH 1/1] um: ubd: Fix data corruption References: <20100928225202.GA30352@foursquare.net> <4CA275CE.6060401@fusionio.com> <20100929012945.GA3324@foursquare.net> <4CA2CCC3.8010307@fusionio.com> <20100929063452.GA13290@foursquare.net> <4CAA02D0.7040901@gmail.com> <20101004195152.GA31583@foursquare.net> <4CAAE077.9010500@gmail.com> <20101005203137.GA594@foursquare.net> <4CAD7D98.7080808@fusionio.com> <20101007202339.GA8338@foursquare.net> <4CB70234.3030308@gmail.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: richard -rw- weinberger Cc: Chris Frey , Jens Axboe , Richard Weinberger , Andrew Morton , "linux-kernel@vger.kernel.org" , "jdike@addtoit.com" , "user-mode-linux-devel@lists.sourceforge.net" , "user-mode-linux-user@lists.sourceforge.net" , "janjaap@bos.nl" , "geert@linux-m68k.org" , "martin.petersen@oracle.com" , "adobriyan@gmail.com" , "syzop@vulnscan.org" List-ID: Hello, On 10/14/2010 04:20 PM, richard -rw- weinberger wrote: > It does not work for me. > But the error is a different one. :-) > Without your patch I've never got this kernel trace. > > [ 59.850000] kworker/0:1: page allocation failure. order:0, mode:0x20 Hmm... you're seeing out of memory condition. If the code screws up filesystem access, I suppose it could make that happen too but can you please check the configuration just in case (especially the memory size)? Also, if you can reliably reproduce the filesystem corruption w/o the patch, can you please tell me how to do it? Thanks. -- tejun