1 files changed, 7 insertions, 4 deletions

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index dddfb5795d7b..ba952bdc4d62 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -4838,17 +4838,19 @@ static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
         struct nfs4_secinfo_flavor *sec_flavor;
         int status;
         __be32 *p;
-        int i;
+        int i, num_flavors;
 
         status = decode_op_hdr(xdr, OP_SECINFO);
         p = xdr_inline_decode(xdr, 4);
         if (unlikely(!p))
                 goto out_overflow;
-        res->flavors->num_flavors = be32_to_cpup(p);
 
-        for (i = 0; i < res->flavors->num_flavors; i++) {
+        res->flavors->num_flavors = 0;
+        num_flavors = be32_to_cpup(p);
+
+        for (i = 0; i < num_flavors; i++) {
                 sec_flavor = &res->flavors->flavors[i];
-                if ((char *)&sec_flavor[1] - (char *)res > PAGE_SIZE)
+                if ((char *)&sec_flavor[1] - (char *)res->flavors > PAGE_SIZE)
                         break;
 
                 p = xdr_inline_decode(xdr, 4);
@@ -4860,6 +4862,7 @@ static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res)
                         if (decode_secinfo_gss(xdr, sec_flavor))
                                 break;
                 }
+                res->flavors->num_flavors++;
         }
 
         return 0;