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Subject: Re: [REGRESSION] x86 vmalloc issue from recent 3.10.0+ commit
From: "Michael L. Semon" <mlsemon35@gmail.com>
To: Dave Jones <davej@redhat.com>, "Michael L. Semon" <mlsemon35@gmail.com>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        d.hatayama@jp.fujitsu.com, akpm@linux-foundation.org
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Thanks.  I'll re-review this, anyway, and re-bisect if time allows.
The kernel/SGI-XFS combo pulled last night did much better in this
regard.  The problem is down to a different and single backtrace about
vmalloc, and the PC is controllable now.  The old git was moved to a
different folder, though, in case it's still needed.

Michael

On Tue, Jul 9, 2013 at 9:59 PM, Dave Jones <davej@redhat.com> wrote:
> On Tue, Jul 09, 2013 at 09:51:32PM -0400, Michael L. Semon wrote:
>
>  > kernel: [ 2580.395592] vmap allocation for size 20480 failed: use vmalloc=<size> to increase size.
>  > kernel: [ 2580.395761] vmalloc: allocation failure: 16384 bytes
>
> I was seeing a lot of these recently too.
> (Though I also saw memory corruption afterwards possibly caused by
>  a broken fallback path somewhere when that vmalloc fails)
>
> http://comments.gmane.org/gmane.linux.kernel.mm/102895
>
>         Dave
>

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Date: Wed, 10 Jul 2013 13:27:36 -0400
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Subject: Re: [REGRESSION] x86 vmalloc issue from recent 3.10.0+ commit
From: "Michael L. Semon" <mlsemon35@gmail.com>
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To: Dave Jones <davej@redhat.com>, "Michael L. Semon" <mlsemon35@gmail.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, d.hatayama@jp.fujitsu.com, akpm@linux-foundation.org

Thanks.  I'll re-review this, anyway, and re-bisect if time allows.
The kernel/SGI-XFS combo pulled last night did much better in this
regard.  The problem is down to a different and single backtrace about
vmalloc, and the PC is controllable now.  The old git was moved to a
different folder, though, in case it's still needed.

Michael

On Tue, Jul 9, 2013 at 9:59 PM, Dave Jones <davej@redhat.com> wrote:
> On Tue, Jul 09, 2013 at 09:51:32PM -0400, Michael L. Semon wrote:
>
>  > kernel: [ 2580.395592] vmap allocation for size 20480 failed: use vmalloc=<size> to increase size.
>  > kernel: [ 2580.395761] vmalloc: allocation failure: 16384 bytes
>
> I was seeing a lot of these recently too.
> (Though I also saw memory corruption afterwards possibly caused by
>  a broken fallback path somewhere when that vmalloc fails)
>
> http://comments.gmane.org/gmane.linux.kernel.mm/102895
>
>         Dave
>

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