From: Alexey Khoroshilov <khoroshilov@ispras.ru>
Date: Thu, 17 Jul 2014 23:11:45 +0000 (+0400)
Subject: NFS: add checks for returned value of try_module_get()
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~82^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f70ef96b176bdb3b75230ec68850d83736b387b;p=pandora-kernel.git

NFS: add checks for returned value of try_module_get()

There is a couple of places in client code where returned value
of try_module_get() is ignored. As a result there is a small chance
to premature unload module because of unbalanced refcounting.

The patch adds error handling in that places.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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