[PATCH 1/2] drm/i915: fix integer overflow in i915_gem_execbuffer2()

[Chris Wilson]

On Fri,  6 Apr 2012 08:58:18 -0400, Xi Wang <xi.wang at gmail.com> wrote:
> A large args->buffer_count from userspace may overflow the allocation
> size, leading to out-of-bounds access.
> 
> Use kmalloc_array() to avoid that.

I can safely say that exec list larger than 4GiB is going to be an
illegal operation and would rather the ioctl failed outright with
EINVAL.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre