[Intel-gfx] [PATCH 2/5] drm: Fixes unsafe deference in locks.

[Chris Wilson]

On Thu, Apr 23, 2015 at 03:07:55PM +0100, Peter Antoine wrote:
> This patch fixes an unsafe deference in the DRM_IOCTL_NEW_CTX. If the
> ioctl is called before the lock is created or after it has been destroyed.
> The code will deference a NULL pointer. This ioctl is a root ioctl so
> exploitation is limited.

You've turned an application crash into an application crash...
Just with a slightly less verbose kernel log.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre