Re: [PATCH] kbuild: mkcompile_h: Include $LD version in /proc/version

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On Thu, Apr 02, 2020 at 11:22:02AM -0700, Nick Desaulniers wrote:
> With Kees patch + Masahiro's diff applied:
> $ cat /proc/version
> Linux version 5.6.0-rc7-next-20200330+ (ndesaulniers@<hostname
> scrubbed>) (clang version 11.0.0 (git@xxxxxxxxxx:llvm/llvm-project.git
> 6d71daed03ced011cd25f4e4f4122a368fdc757d), LLD 11.0.0
> (git@xxxxxxxxxx:llvm/llvm-project.git
> 6d71daed03ced011cd25f4e4f4122a368fdc757d)) #167 SMP Thu Apr 2 11:17:36
> PDT 2020
> 
> Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> Tested-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>

Awesome! Thanks for testing. :)

> We could actually use this in Android for a VTS test I've, uh, been
> meaning to write.  Also, LOL at scrubbing the "compatible with" part,
> reminds me of user agent strings in the browser, which are god awful.

Heh, yeah. That's there because (actually, I think _you_ told me this
when I asked during the ClangBuiltLinux summit) other tools scanned the
LD version string for the binutils-specific bits. For this, since it's
newly added to the kernel /proc/version, nothing is already expecting to
find an LD string, and it looked super weird in there if I left it
as-is. Hence, scrub!

-Kees

-- 
Kees Cook



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