From: Benjamin Gilbert <benjamin.gilbert@coreos.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
X86 ML <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, stable <stable@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Garnier <thgarnie@google.com>,
Alexander Kuleshov <kuleshovmail@gmail.com>
Subject: Re: "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs
Date: Thu, 4 Jan 2018 11:38:14 -0800 [thread overview]
Message-ID: <20180104193814.GA26859@trogon.sfo.coreos.systems> (raw)
In-Reply-To: <alpine.DEB.2.20.1801041320360.1771@nanos>
On Thu, Jan 04, 2018 at 01:28:59PM +0100, Thomas Gleixner wrote:
> On Wed, 3 Jan 2018, Andy Lutomirski wrote:
> > Our memory map code is utter shite. This kind of bug should not be
> > possible without a giant warning at boot that something is screwed up.
>
> You're right it's utter shite and the KASLR folks who added this insanity
> of making vaddr_end depend on a gazillion of config options and not
> documenting it in mm.txt or elsewhere where it's obvious to find should
> really sit back and think hard about their half baken 'security' features.
>
> Just look at the insanity of comment above the vaddr_end ifdef maze.
>
> Benjamin, can you test the patch below please?
Seems to work!
Thanks,
--Benjamin Gilbert
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next prev parent reply other threads:[~2018-01-04 19:38 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-03 8:36 "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs Benjamin Gilbert
2018-01-03 8:46 ` Benjamin Gilbert
2018-01-03 9:20 ` Greg Kroah-Hartman
2018-01-03 15:48 ` Ingo Molnar
2018-01-03 22:32 ` Benjamin Gilbert
2018-01-03 22:34 ` Thomas Gleixner
2018-01-03 22:49 ` Benjamin Gilbert
2018-01-03 22:57 ` Thomas Gleixner
2018-01-03 22:58 ` Thomas Gleixner
2018-01-03 23:44 ` Andy Lutomirski
2018-01-03 23:46 ` Thomas Gleixner
2018-01-04 0:27 ` Andy Lutomirski
2018-01-04 0:38 ` Benjamin Gilbert
2018-01-04 0:33 ` Benjamin Gilbert
2018-01-04 0:37 ` Thomas Gleixner
2018-01-04 7:14 ` Ingo Molnar
2018-01-04 7:18 ` Greg Kroah-Hartman
2018-01-04 7:20 ` Ingo Molnar
2018-01-04 8:03 ` Greg Kroah-Hartman
2018-01-04 7:22 ` Ingo Molnar
2018-01-04 0:37 ` Andy Lutomirski
2018-01-04 4:35 ` Benjamin Gilbert
2018-01-04 4:45 ` Andy Lutomirski
2018-01-04 12:28 ` Thomas Gleixner
2018-01-04 16:17 ` Andy Lutomirski
2018-01-04 16:34 ` Thomas Gleixner
2018-01-04 19:38 ` Benjamin Gilbert [this message]
2018-01-04 1:37 ` Benjamin Gilbert
2018-01-04 4:36 ` Benjamin Gilbert
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