Re: bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")

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To: Jeff Moyer <jmoyer@xxxxxxxxxx>
Subject: Re: bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")
From: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Date: Wed, 12 Feb 2020 01:15:09 +0300
Cc: Justin He <Justin.He@xxxxxxx>, Catalin Marinas <Catalin.Marinas@xxxxxxx>, "Kirill A.Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>, "linux-mm@xxxxxxxxx" <linux-mm@xxxxxxxxx>
In-reply-to: <x49d0akokaj.fsf@segfault.boston.devel.redhat.com>
References: <x49tv3yys1l.fsf@segfault.boston.devel.redhat.com> <VE1PR08MB4639605431DE68EB3DC9D240F7180@VE1PR08MB4639.eurprd08.prod.outlook.com> <VE1PR08MB4639EBB60C7196213652D1E6F7180@VE1PR08MB4639.eurprd08.prod.outlook.com> <x49sgjhnkfd.fsf@segfault.boston.devel.redhat.com> <20200211173352.wjm6govzcqy355y7@box> <x49k14tnh3t.fsf@segfault.boston.devel.redhat.com> <20200211214439.v6bowbkyienrwtdd@box> <x49d0akokaj.fsf@segfault.boston.devel.redhat.com>

On Tue, Feb 11, 2020 at 05:01:40PM -0500, Jeff Moyer wrote:
> Let me know if I'm stilling confusing you.  :)

Okay. The commit is not to blame for the bug, but only for its exposure.

-- 
 Kirill A. Shutemov

References:
- bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")
  - From: Jeff Moyer
- RE: bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")
  - From: Justin He
- RE: bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")
  - From: Justin He
- Re: bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")
  - From: Jeff Moyer
- Re: bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")
  - From: Kirill A. Shutemov
- Re: bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")
  - From: Jeff Moyer
- Re: bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")
  - From: Kirill A. Shutemov
- Re: bug: data corruption introduced by commit 83d116c53058 ("mm: fix double page fault on arm64 if PTE_AF is cleared")
  - From: Jeff Moyer

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