From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Wed, 20 Jun 2012 13:58:35 +0000 (-0400)
Subject: SUNRPC: Don't decode beyond the end of the RPC reply message
X-Git-Tag: v3.6-rc1~38^2~64
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bfeea1dc1c9238f9e5a17a265489ecd0d19f66bb;p=pandora-kernel.git

SUNRPC: Don't decode beyond the end of the RPC reply message

Now that xdr_inline_decode() will automatically cross into the page
buffers, we need to ensure that it doesn't exceed the total reply
message length.

This patch sets up a counter that tracks the number of words
remaining in the reply message, and ensures that xdr_inline_decode,
xdr_read_pages and xdr_enter_page respect the end of message boundary.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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