Messages in this thread | | | From | Kees Cook <> | Date | Tue, 7 May 2019 14:07:51 -0700 | Subject | Re: [PATCH v3 0/7] crypto: x86: Fix indirect function call casts |
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On Tue, May 7, 2019 at 10:00 AM Eric Biggers <ebiggers@kernel.org> wrote: > > Given the above, the current efforts to improve the Linux security, > > and the upcoming kernel support to compilers with CFI features, this > > creates macros to be used to build the needed function definitions, > > to be used in camellia, cast6, serpent, twofish, and aesni. > > So why not change the function prototypes to be compatible with common_glue_*_t > instead, rather than wrapping them with another layer of functions? Is it > because indirect calls into asm code won't be allowed with CFI?
I don't know why they're not that way to begin with. But given that the casting was already happening, this is just moving it to a place where CFI won't be angry. :)
> > crypto: x86/crypto: Use new glue function macros > > This one should be "x86/serpent", not "x86/crypto".
Oops, yes, that's my typo. I'll fix for v4. Do the conversions themselves look okay (the changes are pretty mechanical)? If so, Herbert, do you want a v4 with the typo fix, or do you want to fix that up yourself?
Thanks!
-- Kees Cook
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