NFSv4.1: decode_getdeviceinfo should check xdr_read_pages() return value

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 8dba6bd..a756349 100644 (file)
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -5642,7 +5642,8 @@ static int decode_getdeviceinfo(struct xdr_stream *xdr,
         * and places the remaining xdr data in xdr_buf->tail
         */
        pdev->mincount = be32_to_cpup(p);
-       xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
+       if (xdr_read_pages(xdr, pdev->mincount) != pdev->mincount)
+               goto out_overflow;
 
        /* Parse notification bitmap, verifying that it is zero. */
        p = xdr_inline_decode(xdr, 4);