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Message-ID: <8376.1469251283@turing-police.cc.vt.edu>
Date: Sat, 23 Jul 2016 01:21:23 -0400
From: Valdis.Kletnieks@...edu
To: Andy Lutomirski <luto@...nel.org>
Cc: kernel-hardening@...ts.openwall.com, x86@...nel.org,
linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
Borislav Petkov <bp@...en8.de>, Nadav Amit <nadav.amit@...il.com>,
Kees Cook <keescook@...omium.org>, Brian Gerst <brgerst@...il.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Josh Poimboeuf <jpoimboe@...hat.com>, Jann Horn <jann@...jh.net>,
Heiko Carstens <heiko.carstens@...ibm.com>
Subject: Re: [PATCH v5 03/32] x86/cpa: In populate_pgd, don't set the pgd entry until it's populated
On Thu, 21 Jul 2016 22:34:33 -0700, Andy Lutomirski said:
> How much memory do you have and what's your config? My code is
> obviously buggy, but I'm wondering why neither I nor the 0day bot caught
> this.
Probably because your devel box and the 0day bot both have 4-level page
tables and the dual-core i5 in my laptop has (presumably) 3?
In any case, your patch didn't fix things, nor did (as you noted in a mail
to Ingo) does reverting the problem commit (and then the following one that
deletes now-dead code so it will compile cleanly).
8G of memory, 2 4G dimms. .config attached. Anything that would help
from /proc or /sys?
View attachment ".config" of type "text/plain " (113193 bytes)
Content of type "application/pgp-signature" skipped
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