linux-kernel - Re: [REGRESSION] Re: i915 driver crashes on T540p if docking station attached

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Message-ID: <20150730155945.GA3227@thunk.org>
Date:	Thu, 30 Jul 2015 11:59:45 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	DRI <dri-devel@...ts.freedesktop.org>,
	Daniel Vetter <daniel.vetter@...el.com>,
	Mani Nikula <jani.nikula@...ux.intel.com>,
	Ander Conselvan de Oliveira 
	<ander.conselvan.de.oliveira@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [REGRESSION] Re: i915 driver crashes on T540p if docking station
 attached

On Thu, Jul 30, 2015 at 11:50:29AM -0400, Theodore Ts'o wrote:
> I've tried pulling in your patches from fixes-stuff, onto Linus's tree
> (without Linus's fix), and the good news is that I'm no longer
> crashing on boot.
> 
> The *bad* news is that (a) it breaks the external monitor attached to
> the docking station completely (this was working with Linus's patch),
> and (b) it's triggering a LOCKDEP failure.

Well, that's not fair.  Even with Linus's fix, there is still a
LOCKDEP failure.  And a few more i915 WARNINGS.  But at least the
external monitor works, so this is what I'm using.  Enclosed please
find a dmesg with the lockdep and i915 warnings and my .config.  The
kernel that I used can be found at:

https://git.kernel.org/cgit/linux/kernel/git/tytso/ext4.git/log/?h=i915-test-4.2.0-rc4

						- Ted

Download attachment "dmesg.gz" of type "application/gzip" (25784 bytes)

Download attachment "config.gz" of type "application/gzip" (31022 bytes)