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: Mon, 15 Feb 2016 17:38:43 +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: <20160215113159.GA28832@node.shutemov.name>
Organization: "IBM Deutschland Research & Development GmbH / Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294"
User-agent: Alpine 2.20 (LFD 67 2015-01-07)

On Mon, 15 Feb 2016, Kirill A. Shutemov wrote:
> > [   59.851421] list_del corruption. next->prev should be 000000006e1eb000, but was 0000000000000400
> 
> This kinda interesting: 0x400 is TAIL_MAPPING.. Hm..
> 
> Could you check if you see the problem on commit 1c290f642101 and its
> immediate parent?

Both 1c290f642101 and 1c290f642101^ survived 20 compile runs each.

Sebastian

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References:
- [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
- 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: Kirill A. Shutemov

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