From 6962db53ad0331c5670f5797d212b25ad8338168 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Fri, 24 Aug 2012 10:59:25 -0400
Subject: [PATCH] NFSv4: Fix range checking in __nfs4_get_acl_uncached and
 __nfs4_proc_set_acl

commit 21f498c2f73bd6150d82931f09965826dca0b5f2 upstream.

Ensure that the user supplied buffer size doesn't cause us to overflow
the 'pages' array.

Also fix up some confusion between the use of PAGE_SIZE and
PAGE_CACHE_SIZE when calculating buffer sizes. We're not using
the page cache for anything here.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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