linux-kernel - Re: e1000e NVM corruption issue status

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Message-Id: <200809261123.52198.jbarnes@virtuousgeek.org>
Date:	Fri, 26 Sep 2008 11:23:49 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Arjan van de Ven <arjan@...ux.intel.com>
Cc:	Jiri Kosina <jkosina@...e.cz>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	LKML <linux-kernel@...r.kernel.org>, agospoda@...hat.com,
	"Ronciak, John" <john.ronciak@...el.com>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"Graham, David" <david.graham@...el.com>, kkiel@...e.de,
	tglx@...utronix.de, chris.jones@...onical.com,
	arjan@...ux.jf.intel.com
Subject: Re: e1000e NVM corruption issue status

On Friday, September 26, 2008 10:52 am Jesse Barnes wrote:
> On Friday, September 26, 2008 4:49 am Arjan van de Ven wrote:
> > Jiri Kosina wrote:
> > > On Thu, 25 Sep 2008, Brandeburg, Jesse wrote:
> > >> this is the current set of patches that I have to help us debug
> > >> and/or fix e1000e issues found during this debug effort for
> > >> the corrupt NVM.  the "drop stats lock" - "reset swflag" patches allow
> > >> Thomas' patch for a mutex in the SWFLAG acquire function to run
> > >> without any errors.
> > >
> > > Thanks. Also Jesse Barnes' patch shouldn't be forgotten, could you
> > > please add it to that lineup?
> > >
> > > 	http://marc.info/?l=linux-kernel&m=122237193628087&w=2
> >
> > can we (for now) also stick a WARN_ON() into that failure path? that way
> > we can at least catch if/when this happens more visibly..... if it
> > happens consistently in say the new distros we can be more confident that
> > we're down the right path in diagnosing the issue.
>
> I'm spinning a new one now with some debug output, stay tuned (just gotta
> boot my test box).

Ok here's an updated one.  Jesse (Br) can you add it to your list?  If the X 
driver really is mapping too much this should catch it, as long as it goes 
through sysfs.

Thanks,
Jesse

View attachment "pci-sysfs-mmap-range-check-2.patch" of type "text/x-diff" (1428 bytes)