Messages in this thread | | | From | Chris Wilson <> | Subject | Re: [PATCH 1/2] drm/i915: fix integer overflow in i915_gem_execbuffer2() | Date | Fri, 06 Apr 2012 20:40:12 +0100 |
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On Fri, 6 Apr 2012 14:17:41 -0400, Xi Wang <xi.wang@gmail.com> wrote: > On Apr 6, 2012, at 10:44 AM, Chris Wilson wrote: > > > That I agreed with, I just disagree with how you chose to handle it. > > Rather than continue on and attempt to vmalloc a large array we should > > just fail the ioctl with EINVAL. > > Why an attempt to vmalloc? The overflow check in drm_malloc_ab() > will simply return NULL and fail the ioctl with -ENOMEM.
It's an invalid value for the ioctl and should be treated as such, not making ENOMEM more ambiguous. -Chris
-- Chris Wilson, Intel Open Source Technology Centre
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