linux-kernel - Re: kernel error : 'find /proc/ -type f

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Message-ID: <20100129133816.GQ19799@ZenIV.linux.org.uk>
Date:	Fri, 29 Jan 2010 13:38:16 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Am??rico Wang <xiyou.wangcong@...il.com>
Cc:	Toralf F??rster <toralf.foerster@....de>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: kernel error : 'find /proc/ -type f | xargs -n 1 head -c 10
	>/dev/null'

On Thu, Jan 28, 2010 at 12:51:02PM +0800, Am??rico Wang wrote:
> 2010/1/22 Toralf F??rster <toralf.foerster@....de>:
> > I was inspired by http://article.gmane.org/gmane.linux.kernel/941115 .
> >
> > Running the command (se subject) as a normal user at a 2.6.32.4 kernel
> > gives this in /var/log/messages:
> >
> > 2010-01-21T20:11:39.171+01:00 n22 kernel: head: page allocation failure. order:9, mode:0xd0
> 
> 
> Hmm, it is suspecious that we need 2^9 pages for seq_file...

Something's using single_open() and obscene amounts of output; should
switch to real iterator...  Which file it is?
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