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Date: Fri, 16 Nov 2012 11:17:07 -0800 (PST)
From: David Rientjes <rientjes@google.com>
To: James Cloos <cloos@jhcloos.com>
cc: linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org
Subject: Re: Likely mem leak in 3.7
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On Thu, 15 Nov 2012, James Cloos wrote:

> The kernel does not log anything relevant to this.
> 

Can you do the following as root:

	dmesg -c > /dev/null
	echo m > /proc/sysrq-trigger
	dmesg > foo

and send foo inline in your reply?

> Slabinfo gives some odd output.  It seems to think there are negative
> quantities of some slabs:
> 
> Name                   Objects Objsize    Space Slabs/Part/Cpu  O/S O %Fr %Ef Flg
> :at-0000016               5632      16    90.1K 18446744073709551363/0/275  256 0   0 100 *a
> :t-0000048                3386      48   249.8K 18446744073709551558/22/119   85 0  36  65 *
> :t-0000120                1022     120   167.9K 18446744073709551604/14/53   34 0  34  73 *
> blkdev_requests            182     376   122.8K 18446744073709551604/7/27   21 1  46  55 
> ext4_io_end                348    1128   393.2K 18446744073709551588/0/40   29 3   0  99 a
> 

Can you send the output of

	zgrep CONFIG_SL[AU]B /proc/config.gz
	cat /proc/slabinfo