On Tue, May 5, 2020 at 3:48 PM Nick Desaulniers wrote:
>
> + Kees, George, who have started looking into this, too.
I have a smaller reproducer and analysis I'll send out very shortly.
As discussed on IRC, this issue here isn't specific to this file, but
rather fortify source has some serious issues on clang-10, everywhere
in the kernel, and we should probably disable it globally for this
clang version. I'll follow up with some more info in a different
patch.
clang-10 produces a warning about excessive stack usage, as well
as rather unoptimized object code when CONFIG_FORTIFY_SOURCE is
set:
lib/crypto/curve25519-hacl64.c:759:6: error: stack frame size of 2400 bytes in
function 'curve25519_generic' [-Werror,-Wframe-larger-than=]
Jason Donenfeld manage
