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Date: Sat, 11 Nov 2017 09:31:34 -0800
From: Linus Torvalds <>
To: Kees Cook <>
Cc: Patrick McLean <>, Emese Revfy <>, 
	Al Viro <>, Bruce Fields <>, 
	"Darrick J. Wong" <>, 
	Linux Kernel Mailing List <>, 
	Linux NFS Mailing List <>, stable <>, 
	Thorsten Leemhuis <>, 
	"" <>
Subject: Re: [nfsd4] potentially hardware breaking regression in 4.14-rc and 4.13.11

Boris Lukashev points out that Patrick should probably check a newer
version of gcc.

I looked around, and in one of the emails, Patrick said:

  "No changes, both the working and broken kernels were built with
   distro-provided gcc 5.4.0 and binutils 2.28.1"

and gcc-5.4.0 is certainly not very recent. It's not _ancient_, but
it's a bug-fix release to a pretty old branch that is not exactly new.

It would probably be good to check if the problems persist with gcc
6.x or 7.x.. I have no idea which gcc version the randstruct people
tend to use themselves.


On Sat, Nov 11, 2017 at 8:13 AM, Kees Cook <> wrote:
> I'll take a closer look at this and see if I can provide something to
> narrow it down.

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