linux-kernel - Re: [PATCH] drm/mgag200: fix memory leak

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Message-ID: <20150914090655.GA23149@gmail.com>
Date:	Mon, 14 Sep 2015 11:06:56 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:	David Airlie <airlied@...ux.ie>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm/mgag200: fix memory leak


* Sudip Mukherjee <sudipm.mukherjee@...il.com> wrote:

> On Sun, Sep 13, 2015 at 11:36:07AM +0200, Ingo Molnar wrote:
> > 
> > * Sudip Mukherjee <sudipm.mukherjee@...il.com> wrote:
> > 
> <snip>
> > 
> > There's a new regression: v4.3-rc1 crashes on bootup on non-supported hardware, if 
> > CONFIG_DRM_MGAG200=y (built into the kernel).
> 
> I am not able to reproduce it with and without my patch applied.
> I have attached my config file. Compiled and booted on my test system
> also tried on qemu. Can you please give your .config file.

Sure - config and full crash.log attached.

NOTE: I booted this on native hardware that _does_ have MGAG200 hardware:

  model name      : Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz

  BIOS Information
          Vendor: Intel Corp.
          Version: SE5C600

  0b:00.0 VGA compatible controller: Matrox Electronics Systems Ltd. MGA G200e [Pilot] ServerEngines (SEP1) (rev 05)

So that's likely why you didn't see the crash under Qemu.

Thanks,

	Ingo

View attachment "config" of type "text/plain" (114109 bytes)

View attachment "crash.log" of type "text/plain" (111750 bytes)