From: Benjamin Gilbert <benjamin.gilbert@coreos.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
x86@kernel.org, LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, stable@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>, Andy Lutomirski <luto@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs
Date: Wed, 3 Jan 2018 20:35:03 -0800 [thread overview]
Message-ID: <CAD3Vwcptxyf+QJO7snZs_-MHGV3ARmLeaFVR49jKM=6MAGMk7Q@mail.gmail.com> (raw)
In-Reply-To: <DE0BC12C-4BA8-46AF-BD90-6904B9F87187@amacapital.net>
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On Wed, Jan 03, 2018 at 04:37:53PM -0800, Andy Lutomirski wrote:
> Maybe try rebuilding a bad kernel with free_ldt_pgtables() modified
> to do nothing, and the read /sys/kernel/debug/page_tables/current (or
> current_kernel, or whatever it's called). The problem may be obvious.
current_kernel attached. I have not seen any crashes with
free_ldt_pgtables() stubbed out.
--Benjamin Gilbert
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next prev parent reply other threads:[~2018-01-04 4:35 UTC|newest]
Thread overview: 59+ 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 9:20 ` Greg Kroah-Hartman
2018-01-03 15:48 ` Ingo Molnar
2018-01-03 15:48 ` Ingo Molnar
2018-01-03 22:32 ` Benjamin Gilbert
2018-01-03 22:32 ` Benjamin Gilbert
2018-01-03 22:34 ` Thomas Gleixner
2018-01-03 22:34 ` Thomas Gleixner
2018-01-03 22:49 ` Benjamin Gilbert
2018-01-03 22:57 ` Thomas Gleixner
2018-01-03 22:57 ` Thomas Gleixner
2018-01-03 22:58 ` Thomas Gleixner
2018-01-03 22:58 ` Thomas Gleixner
2018-01-03 23:44 ` Andy Lutomirski
2018-01-03 23:44 ` Andy Lutomirski
2018-01-03 23:46 ` Thomas Gleixner
2018-01-03 23:46 ` Thomas Gleixner
2018-01-04 0:27 ` Andy Lutomirski
2018-01-04 0:27 ` Andy Lutomirski
2018-01-04 0:38 ` Benjamin Gilbert
2018-01-04 0:38 ` Benjamin Gilbert
2018-01-04 0:33 ` Benjamin Gilbert
2018-01-04 0:33 ` Benjamin Gilbert
2018-01-04 0:37 ` Thomas Gleixner
2018-01-04 0:37 ` Thomas Gleixner
2018-01-04 7:14 ` Ingo Molnar
2018-01-04 7:14 ` Ingo Molnar
2018-01-04 7:18 ` Greg Kroah-Hartman
2018-01-04 7:18 ` Greg Kroah-Hartman
2018-01-04 7:20 ` Ingo Molnar
2018-01-04 7:20 ` Ingo Molnar
2018-01-04 8:03 ` Greg Kroah-Hartman
2018-01-04 8:03 ` Greg Kroah-Hartman
2018-01-04 7:22 ` Ingo Molnar
2018-01-04 7:22 ` Ingo Molnar
2018-01-04 0:37 ` Andy Lutomirski
2018-01-04 0:37 ` Andy Lutomirski
2018-01-04 4:35 ` Benjamin Gilbert [this message]
2018-01-04 4:45 ` Andy Lutomirski
2018-01-04 4:45 ` Andy Lutomirski
2018-01-04 12:28 ` Thomas Gleixner
2018-01-04 12:28 ` Thomas Gleixner
2018-01-04 16:17 ` Andy Lutomirski
2018-01-04 16:17 ` Andy Lutomirski
2018-01-04 16:34 ` Thomas Gleixner
2018-01-04 16:34 ` Thomas Gleixner
2018-01-04 19:38 ` Benjamin Gilbert
2018-01-04 19:38 ` Benjamin Gilbert
2018-01-04 22:10 ` [tip:x86/pti] x86/mm: Map cpu_entry_area at the same place on 4/5 level tip-bot for Thomas Gleixner
2018-01-04 22:10 ` [tip:x86/pti] x86/kaslr: Fix the vaddr_end mess tip-bot for Thomas Gleixner
2018-01-04 23:29 ` Benjamin Gilbert
2018-01-04 23:32 ` Thomas Gleixner
2018-01-04 23:48 ` tip-bot for Thomas Gleixner
2018-01-04 1:37 ` "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs Benjamin Gilbert
2018-01-04 1:37 ` Benjamin Gilbert
2018-01-04 4:36 ` Benjamin Gilbert
2018-01-04 4:36 ` Benjamin Gilbert
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