From: Jan Kara <jack@suse.cz>
Date: Mon, 7 Feb 2011 14:00:27 +0000 (+0100)
Subject: debugfs: Fix filesystem reference counting on debugfs_remove() failure
X-Git-Tag: v2.6.39-rc1~471^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=25d41d8455ec1ee7433e146ee94436dc4195f420;p=pandora-kernel.git

debugfs: Fix filesystem reference counting on debugfs_remove() failure

When __debugfs_remove() fails (because simple_rmdir() fails e.g. when a
directory is not empty), we must not decrement use count of the filesystem
as nothing was in fact deleted.

This fixes use after free caused by debugfs in some cases.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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