Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)

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To: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Subject: Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
From: Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>
Date: Fri, 19 Feb 2016 15:15:50 +0100 (CET)
Cc: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx>, Andrea Arcangeli <aarcange@xxxxxxxxxx>, Christian Borntraeger <borntraeger@xxxxxxxxxx>, "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, Paul Mackerras <paulus@xxxxxxxxx>, linuxppc-dev@xxxxxxxxxxxxxxxx, Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will.deacon@xxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, Martin Schwidefsky <schwidefsky@xxxxxxxxxx>, Heiko Carstens <heiko.carstens@xxxxxxxxxx>, linux-s390@xxxxxxxxxxxxxxx
In-reply-to: <20160218170658.GC28184@node.shutemov.name>
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User-agent: Alpine 2.20 (LFD 67 2015-01-07)

On Thu, 18 Feb 2016, Kirill A. Shutemov wrote:
> I worth minimizing kernel config on which you can see the bug. Things like
> CONFIG_DEBUG_PAGEALLOC used to interfere with THP before.

I disabled all debugging options (using
arch/s390/configs/performance_defconfig) - we still chrashed.

Sebastian

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References:
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Kirill A. Shutemov
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Gerald Schaefer
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Kirill A. Shutemov
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Christian Borntraeger
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Gerald Schaefer
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Kirill A. Shutemov
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Sebastian Ott
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Gerald Schaefer
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Kirill A. Shutemov
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Gerald Schaefer
- Re: [BUG] random kernel crashes after THP rework on s390 (maybe also on PowerPC and ARM)
  - From: Kirill A. Shutemov

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