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Subject: Re: [BUG] random kernel crashes after THP rework on s390 (maybe also
 on PowerPC and ARM)
To: "Kirill A. Shutemov" <kirill@shutemov.name>,
        Gerald Schaefer <gerald.schaefer@de.ibm.com>
References: <20160211192223.4b517057@thinkpad>
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Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>,
        Andrea Arcangeli <aarcange@redhat.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>, linuxppc-dev@lists.ozlabs.org,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
        linux-arm-kernel@lists.infradead.org,
        Martin Schwidefsky <schwidefsky@de.ibm.com>,
        Heiko Carstens <heiko.carstens@de.ibm.com>, linux-s390@vger.kernel.org
From: Christian Borntraeger <borntraeger@de.ibm.com>
Message-ID: <56C36E6B.70009@de.ibm.com>
Date: Tue, 16 Feb 2016 19:46:03 +0100
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On 02/15/2016 10:35 PM, Kirill A. Shutemov wrote:
> 
> Is there any chance that I'll be able to trigger the bug using QEMU?
> Does anybody have an QEMU image I can use?

qemu/TCG on s390 does neither provide SMP nor large pages (only QEMU/KVM does)
so this will probably not help you here. 

Christian