Messages in this thread | | | Date | Wed, 15 Jul 2015 19:51:18 -0700 | Subject | Re: [REGRESSION] 4.2-rc2: early boot memory corruption from FPU rework | From | Linus Torvalds <> |
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On Wed, Jul 15, 2015 at 5:34 PM, Dave Hansen <dave.hansen@linux.intel.com> wrote: > > I understand why you were misled by it, but the old "xsave_hdr_struct" > was wrong. Fenghua even posted patches to remove it before the FPU > rework (you were cc'd): > > https://lkml.org/lkml/2015/4/18/164
Oh, and that patch looks like a good idea.
I wish there was some way to make sure sizeof() fail on it so that we'd enforce that nobody allocates that thing as-is. I had this dim memory that an unsized array at the end would do that, but I was clearly wrong. It's just the array itself you can't do sizeof on, not the structure that contains it. Is there some magic trick that I'm forgetting?
Linus
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