linux-kernel - Re: 3.1-rc9: BUG: soft lockup in find_get

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Message-ID: <alpine.DEB.2.02.1110180806480.7942@p34.internal.lan>
Date:	Tue, 18 Oct 2011 09:42:00 -0400 (EDT)
From:	Justin Piszcz <jpiszcz@...idpixels.com>
To:	Hugh Dickins <hughd@...gle.com>
cc:	Pawel Sikora <pluto@...k.net>, arekm@...-linux.org,
	Anders Ossowicki <aowi@...ozymes.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: 3.1-rc9: BUG: soft lockup in find_get_pages+0x4e/0x140


On Mon, 17 Oct 2011, Hugh Dickins wrote:

> On Sat, 15 Oct 2011, Justin Piszcz wrote:
>>
>> With 3.1-rc9 during a filesystem dump, this occurred, I thought a previous
>> patch fixed this but it did not, it occurs MUCH less (first time in a couple
>> of weeks) but the problem still occurs.
>
> Shaohua's nr_skip patch fixed, or at least worked around, the error I
> introduced there in 3.1-rc1.  But now you're finding a similar problem
> still in 3.1-rc9: that confirms what you and others already reported,
> that something like it occurs even in 3.0 without my bug.

Thanks,

Patch applied:

# patch -p1 < /tmp/memory_patch.patch
patching file mm/filemap.c
patching file mm/memcontrol.c

Now running 3.1-rc9 + this patch + re-enabled frame pointers.

Justin.

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