linux-kernel - Re: [PATCH] drm: Test for PCI root bus to avoid NULL pointer dereference

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Message-ID: <542EE470.9050700@spamcop.net>
Date:	Fri, 03 Oct 2014 19:01:20 +0100
From:	Bronek Kozicki <brok@...mcop.net>
To:	Alex Williamson <alex.williamson@...hat.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: Test for PCI root bus to avoid NULL pointer dereference

On 27/08/2014 19:57, Alex Williamson wrote:
> If we have a GPU on the PCI root bus that calls
> drm_pcie_get_speed_cap_mask() we end up with a NULL pointer
> dereference since pdev->bus->self is NULL.  We already protect
> against callers passing non-PCI devices, so let's also catch this
> case and return -EINVAL.
>
> Root complex graphics are not terribly likely outside of IGD, but
> when we assign a standard plugin GPU to a virtual machine, our
> assumption that we have a parent device quickly becomes invalid.


What happend to this patch? I don't see it applied on 
https://github.com/torvalds/linux/tree/master/drivers/gpu/drm


B.


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