linux-kernel - Re: khugepaged / firefox going wild in 3.18-rc

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Message-ID: <alpine.DEB.2.10.1411041615270.5391@chino.kir.corp.google.com>
Date:	Tue, 4 Nov 2014 16:20:08 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Norbert Preining <preining@...ic.at>
cc:	linux-kernel@...r.kernel.org
Subject: Re: khugepaged / firefox going wild in 3.18-rc

On Wed, 5 Nov 2014, Norbert Preining wrote:

> Hi David,
> 
> one more thing, attached dmesg output with some page faults,
> maybe this is connected?
> 

Hmm, I'm not aware of any mm->mmap_sem starvation issues in 3.18-rc, maybe 
this is a duplicate of another issue that someone has reported that I 
haven't seen.  The lengthy output of echo t > /proc/sysrq-trigger should 
give a clue as to what is holding it or perhaps this is a more generic 
rwsem issue.
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