From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: [BUG] scsi: hpsa: how to destroy your files Date: Thu, 01 Sep 2011 11:50:38 -0700 Message-ID: <1314903038.3067.27.camel@dabdike> References: <20110721181605.31672.36250.stgit@beardog.cce.hp.com> <1314890642.2823.27.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> <20110901160724.GN9189@beardog.cce.hp.com> <1314898815.2823.33.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Roland Dreier Cc: Eric Dumazet , scameron@beardog.cce.hp.com, Jon Mason , Jesse Barnes , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, stephenmcameron@gmail.com, thenzl@redhat.com, akpm@linux-foundation.org, mikem@beardog.cce.hp.com List-Id: linux-scsi@vger.kernel.org On Thu, 2011-09-01 at 10:58 -0700, Roland Dreier wrote: > > OK I found the bad commit,I got lucky... I lost some files but my > > machine was able to complete the bisection. CC involved people > > > # bad: [b03e7495a862b028294f59fc87286d6d78ee7fa1] PCI: Set PCI-E Max Payload Size on fabric > > Hi Eric, > > I guess it would be useful to see "lspci -vv" output with a "good" kernel > and with that bad patch applied. Most likely we should see some difference > somewhere in the MaxPayload fields in the PCI Express capability of > some device. > > Either the RAID controller or something else lies, and puts a value > in the DevCap that it can't actually support, or else the patch is > buggy and puts something out of range in a DevCtl somewhere. While we investigate, I think the problems produced by the patch (data corruption) are serious enough to warrant reverting it, please Jesse. Thanks, James