Re: hardened_usercopy 32-bit (was: Re: [tip: x86/merge] x86/fpu: Make task_struct::thread constant size)

[Borislav Petkov]

On Sun, May 04, 2025 at 03:43:07PM -0700, Kees Cook wrote:
> On Sun, May 04, 2025 at 03:30:38PM -0700, Kees Cook wrote:
> > However, I can't test this patch -- I'm not able to reproduce the problem
> > either, even with your .config. What hardware are you using?
> 
> Oh, wait, yes, I reproduced it. I just didn't actually log in or wait for
> complex daemons to start. Without my patch I quickly see the crashes. With
> my patch, everything is fine. So, I can confirm that fixes it.

I can confirm your patch fixes the boot here too - thanks for the
debugging and fixing!

Reported-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Tested-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>

-- 
Regards/Gruss,
    Boris.

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