Re: drm lockups since 2.6.11-bk2

From: Dave Jones
Date: Tue Mar 15 2005 - 09:39:35 EST

On Tue, Mar 15, 2005 at 10:38:30AM +0000, Dave Airlie wrote:
> Hi all,
> Andrew Clayton reported lockups on the dri list issues since -bk2
> and bug 4337 on looks like it might be the same
> thing..
> This leads me to think the AGP multi-bridge patches are at fault... (for
> once my laziness in merging late instead of early gave a good gap in the
> patches...)
> I'm "offline" in sense of I can write this mail and respond but have not
> access to a Linux system, my bitkeeper trees, ssh keys for anywhere of
> interest.. and am in the wrong country, it'll be the 23rd/24th before I am
> back at my desks...
> I might get time to do a code review, my main worry is that all the
> problems reported with those patches in -mm made it into the patchset that
> went into Linus.. mainly things like forgetting to memset certain
> structures to 0 and sillies like that...

I saw one report where the recent drm security hole fix broke dri
for one user. Whilst it seems an isolated incident, could this have
more impact than we first realised ?

Worse case scenario we can drop out the multi-bridge support for now
if it needs work. Mike left SGI now, so we'll need to find someone else
with access to a Prism to make sure it still works correctly on a
real multi-gart system.


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