linux-kernel - Re: [Cluster-devel] [PATCH 1/1] gfs2: incorrect check for debugfs returns

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Message-ID: <418606603.5467773.1427724960573.JavaMail.zimbra@redhat.com>
Date:	Mon, 30 Mar 2015 10:16:00 -0400 (EDT)
From:	Bob Peterson <rpeterso@...hat.com>
To:	Chengyu Song <csong84@...ech.edu>
Cc:	swhiteho@...hat.com, cluster-devel@...hat.com,
	linux-kernel@...r.kernel.org, blee@...ech.edu, taesoo@...ech.edu,
	changwoo@...ech.edu, sanidhya@...ech.edu
Subject: Re: [Cluster-devel] [PATCH 1/1] gfs2: incorrect check for debugfs
	returns

----- Original Message -----
> debugfs_create_dir and debugfs_create_file may return -ENODEV when debugfs
> is not configured, so the return value should be checked against ERROR_VALUE
> as well, otherwise the later dereference of the dentry pointer would crash
> the kernel.
> 
> Signed-off-by: Chengyu Song <csong84@...ech.edu>
> ---
>  fs/gfs2/glock.c | 47 ++++++++++++++++++++++++++++-------------------
>  1 file changed, 28 insertions(+), 19 deletions(-)

Hi,

I've now added this patch to the for-next branch of the linux-gfs2.git
tree. Thanks.

Regards,

Bob Peterson
Red Hat File Systems
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