Re: "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs

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Subject: Re: "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs
From: Benjamin Gilbert <benjamin.gilbert@xxxxxxxxxx>
Date: Wed, 3 Jan 2018 20:36:31 -0800
Cc: x86@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, stable@xxxxxxxxxxxxxxx, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>
In-reply-to: <20180104013742.GA5911@trogon.sfo.coreos.systems>
User-agent: Mutt/1.9.1 (2017-09-22)

On Wed, Jan 03, 2018 at 05:37:42PM -0800, Benjamin Gilbert wrote:
> I was caught by the fact that 4.14.11 has PAGE_TABLE_ISOLATION default y
> but 4.15-rc6 doesn't.  Retesting.

It turns out that 4.15-rc6 has the same problem as 4.14.11.

--Benjamin Gilbert

References:
- "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs
  - From: Benjamin Gilbert
- Re: "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs
  - From: Greg Kroah-Hartman
- Re: "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs
  - From: Benjamin Gilbert
- Re: "bad pmd" errors + oops with KPTI on 4.14.11 after loading X.509 certs
  - From: Benjamin Gilbert

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