linux-kernel - Re: Boot problems on Malta with EVA (bisected to 12220dea07f1 "mm/slab: support slab merge")

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Message-ID: <544F97D4.4030408@imgtec.com>
Date:	Tue, 28 Oct 2014 13:19:16 +0000
From:	Markos Chandras <Markos.Chandras@...tec.com>
To:	Joonsoo Kim <js1304@...il.com>
CC:	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, <linux-mips@...ux-mips.org>
Subject: Re: Boot problems on Malta with EVA (bisected to 12220dea07f1 "mm/slab:
 support slab merge")

On 10/28/2014 01:01 PM, Joonsoo Kim wrote:
> 2014-10-28 19:45 GMT+09:00 Markos Chandras <Markos.Chandras@...tec.com>:
>> Hi,
>>
>> It seems I am unable to boot my Malta with EVA. The problem appeared in
>> the 3.18 merge window. I bisected the problem (between v3.17 and
>> v3.18-rc1) and I found the following commit responsible for the broken boot.
> 
> Hello,
> 
> Did you start to bisect from v3.18-rc1?
> I'd like to be sure that this is another bug which is fixed by following commit.
> 
> commit 85c9f4b04a08f6bc770b77530c22d04103468b8f
> Author: Joonsoo Kim <iamjoonsoo.kim@....com>
> Date:   Mon Oct 13 15:51:01 2014 -0700
> 
>     mm/slab: fix unaligned access on sparc64
> 
> This fix is merged into v3.18-rc1 sometime later that
> 'support slab merge' is merged.
> 
> Thanks.
> 
Hi,

I bisected from v3.17 until 3.18-rc1. But 3.18-rc2 and the latest
mainline (f7e87a44ef60ad379e39b45437604141453bf0ec) still have the same
problem

btw i did more tests and this is not EVA specific. A maltaup_defconfig
fails in the same way. I suspect all malta*_defconfigs will fail in a
similar way which makes it probably easier for you to reproduce it on a
QEMU.

-- 
markos
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