nfs: fix unchecked value

Return value of "decode_attr_bitmap()" was not checked;

Signed-off-by: Roman Borisov <ext-roman.borisov@nokia.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 7131c761d85cecbb00727f046633ac05deeaf95e..bd2101d918c80cda6d6f21b03f696e5312803676 100644 (file)
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -2687,7 +2687,10 @@ out_overflow:
 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
 {
        if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
-               decode_attr_bitmap(xdr, bitmask);
+               int ret;
+               ret = decode_attr_bitmap(xdr, bitmask);
+               if (unlikely(ret < 0))
+                       return ret;
                bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
        } else
                bitmask[0] = bitmask[1] = 0;