Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 10 Mar 2023 21:05:19 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH v7 33/41] x86/shstk: Introduce map_shadow_stack syscall |
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On Fri, Mar 10, 2023 at 05:12:40PM +0000, Edgecombe, Rick P wrote: > > Can we use distinct negative retvals in each case so that it is clear > > to > > userspace where it fails, *if* it fails? > > Good idea, I think maybe ERANGE.
For those two, right?
/* If there isn't space for a token */ if (set_tok && size < 8) return -EINVAL;
if (addr && addr <= 0xFFFFFFFF) return -EINVAL;
They are kinda range-checking of sorts. A wider range but still similar...
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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