SUNRPC: init xdr_stream for zero iov_len, page_len
An xdr_buf with head[0].iov_len = 0 and page_len = 0 will cause
xdr_init_decode() to incorrectly setup the xdr_stream. Specifically,
xdr->end is never initialized.
Signed-off-by: Benjamin Coddington <[email protected]>
Signed-off-by: Anna Schumaker <[email protected]>
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 6bdb386..c4f3cc0 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -797,6 +797,8 @@
xdr_set_iov(xdr, buf->head, buf->len);
else if (buf->page_len != 0)
xdr_set_page_base(xdr, 0, buf->len);
+ else
+ xdr_set_iov(xdr, buf->head, buf->len);
if (p != NULL && p > xdr->p && xdr->end >= p) {
xdr->nwords -= p - xdr->p;
xdr->p = p;
