[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 (file)
--- 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);

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 79b25b1..904df60 100644 (file)
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -376,6 +376,7 @@ static struct svc_program   nfsd_acl_program = {
        .pg_nvers               = NFSD_ACL_NRVERS,
        .pg_vers                = nfsd_acl_version,
        .pg_name                = "nfsd",
+       .pg_class               = "nfsd",
        .pg_stats               = &nfsd_acl_svcstats,
 };