[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>
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index a4437fb..db4a904 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -677,7 +677,7 @@
/* 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);