[PATCH] fix nfsacl pointer arithmetic and pg_class initialization bugs

* Pointer arithmetic bug: p is in word units. This fixes a memory
  corruption with big acls.
* Initialize pg_class to prevent a NULL pointer access.

 Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index a4437fb177f0..db4a904810a4 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -677,7 +677,7 @@ nfs3_xdr_setaclargs(struct rpc_rqst *req, u32 *p,
         /* put as much of the acls into head as possible. */
         len_in_head = min_t(unsigned int, buf->head->iov_len - base, len);
         len -= len_in_head;
-        req->rq_slen = xdr_adjust_iovec(req->rq_svec, p + len_in_head);
+        req->rq_slen = xdr_adjust_iovec(req->rq_svec, p + (len_in_head >> 2));
 
         for (count = 0; (count << PAGE_SHIFT) < len; count++) {
                 args->pages[count] = alloc_page(GFP_KERNEL);