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Message-ID: <CAGXu5jJRtiPNTZdA_RBUR=Xy6xcstqJUn_KoQtT4t=8jkucFQg@mail.gmail.com>
Date: Wed, 21 Feb 2018 16:23:26 -0800
From: Kees Cook <keescook@...omium.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>, Patrick McLean <chutzpah@...too.org>,
Emese Revfy <re.emese@...il.com>, Al Viro <viro@...iv.linux.org.uk>,
Bruce Fields <bfields@...hat.com>, "Darrick J. Wong" <darrick.wong@...cle.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux NFS Mailing List <linux-nfs@...r.kernel.org>, Thorsten Leemhuis <regressions@...mhuis.info>,
"kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>
Subject: Re: RANDSTRUCT structs need linux/compiler_types.h (Was: [nfsd4]
potentially hardware breaking regression in 4.14-rc and 4.13.11)
On Wed, Feb 21, 2018 at 4:22 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> On Wed, Feb 21, 2018 at 4:12 PM, Kees Cook <keescook@...omium.org> wrote:
>>
>> Do you want me to send the patch for this, or do you already have it
>> prepared?
>
> I'd rather get something explicitly tested. I tried my earlier patch
> with "make allmodconfig" (and a fix to nfsd to make it compile), but
> now I'm back to testing hjl's gas updates so it would be better to get
> a tested commit with a good commit message.
>
>> The body-fields I had prepared for the nfs were:
>>
>> Reported-by: Patrick McLean <chutzpah@...too.org>
>> Reported-by: Maciej S. Szmigiero <mail@...iej.szmigiero.name>
>
> Oh, I think Maciej needs to get more than a "Reported-by:". This was a
> really subtle thing that we didn't figure out in the original thread,
> so give him a gold star in the form of "Root-caused-by:" or something.
Oops, I just sent this out. I will adjust a re-send. I couldn't find a
documented field name for this...
> *Fixing* this ends up being a one-liner or so. Finding the cause was
> the painful part.
Yes indeed!
-Kees
--
Kees Cook
Pixel Security
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