From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Airlie <airlied@redhat.com>
Subject: Re: cascade panic in cirrus framebuffer mode setting
Date: Fri, 17 May 2013 00:49:43 -0400 (EDT)
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To: Stephen Hemminger <stephen@networkplumber.org>
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> 
> I use KVM VM's to test kernels, and lately with 3.9.2 when my code panic's
> the
> kernel mode setting panic's as well.
> 
> In this example, the first one is my fault; but then cirrus framebuffer DRM
> modesetting craps out.

Yeah the fix went to stable today I think

drm: don't check modeset locks in panic handler

Dave.