linux-kernel - Re: [delayed_fput] BUG: unable to handle kernel paging request at ffff8800122a0ad0

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Message-ID: <alpine.DEB.2.02.1407301550140.26018@chino.kir.corp.google.com>
Date:	Wed, 30 Jul 2014 15:51:12 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Christoph Hellwig <hch@...radead.org>
cc:	Fengguang Wu <fengguang.wu@...el.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Jet Chen <jet.chen@...el.com>, Su Tao <tao.su@...el.com>,
	Yuanhan Liu <yuanhan.liu@...el.com>, LKP <lkp@...org>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [delayed_fput] BUG: unable to handle kernel paging request at
 ffff8800122a0ad0

On Wed, 30 Jul 2014, Christoph Hellwig wrote:

> On Wed, Jul 30, 2014 at 11:55:41AM +0800, Fengguang Wu wrote:
> > Greetings,
> > 
> > 0day kernel testing robot got the below dmesg and the first bad commit is
> 
> How does this manage to trip over a 2 year old commit now?
> 

I think there's something weird going on with the testing of CONFIG_SLOB, 
same as http://permalink.gmane.org/gmane.linux.kernel/1759314 that 
identified a harmless commit that only initializes a field of
struct mm_struct and then ended up exploded in slob freeing.
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