Re: [PATCH v7 33/41] x86/shstk: Introduce map_shadow_stack syscall
From: Borislav Petkov <bp@alien8.de>
Date: 2023-03-10 20:05:31
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On Fri, Mar 10, 2023 at 05:12:40PM +0000, Edgecombe, Rick P wrote:
quoted
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.
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