From: Badari Pulavarty Subject: Re: [RFC][PATCH] set_page_buffer_dirty should skip unmapped buffers Date: Fri, 01 Sep 2006 14:01:35 -0700 Message-ID: <44F89FAF.2050601@us.ibm.com> References: <1157125829.30578.6.camel@dyn9047017100.beaverton.ibm.com> <1157128342.30578.14.camel@dyn9047017100.beaverton.ibm.com> <20060901101801.7845bca2.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Anton Altaparmakov , sct@redhat.com, linux-fsdevel , lkml , ext4 Return-path: To: Andrew Morton In-Reply-To: <20060901101801.7845bca2.akpm@osdl.org> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org Andrew Morton wrote: > On Fri, 01 Sep 2006 09:32:22 -0700 > Badari Pulavarty wrote: > > >>>> Kernel BUG at fs/buffer.c:2791 >>>> invalid opcode: 0000 [1] SMP >>>> >>>> Its complaining about BUG_ON(!buffer_mapped(bh)). >>>> > > I need to have a little think about this, remember what _should_ be > happening in this situation. > > We (mainly I) used to do a huge amount of fsx-linux testing on 1k blocksize > filesystems. We've done something to make this start happening. Part of > resolving this bug will be working out what that was. > Here is the progress in tracking this down so far. I am able to reproduce the problem on following kernel versions. 2.6.18-rc5 2.6.18-rc4 2.6.17.11 2.6.16.28 2.6.15.7 2.6.14.7 I am yet to find a latest kernel version - where this works :( I am going to try older versions of the kernel. Thanks, Badari -- VGER BF report: H 3.60822e-15