NFSv4: Check for NULL argument in nfs_*_seqid() functions

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 7e7be5ab70bb..d05fada4929c 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -946,7 +946,10 @@ static void encode_uint64(struct xdr_stream *xdr, u64 n)
 static void encode_nfs4_seqid(struct xdr_stream *xdr,
                 const struct nfs_seqid *seqid)
 {
-        encode_uint32(xdr, seqid->sequence->counter);
+        if (seqid != NULL)
+                encode_uint32(xdr, seqid->sequence->counter);
+        else
+                encode_uint32(xdr, 0);
 }
 
 static void encode_compound_hdr(struct xdr_stream *xdr,