1 files changed, 2 insertions, 0 deletions

diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index e7d63737e651..08781a4698b4 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -225,6 +225,8 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses, struct nls_table * nls_
         user_name_len = strlen(ses->userName);
         if(user_name_len > MAX_USERNAME_SIZE)
                 return -EINVAL;
+        if(ses->domainName == NULL)
+                return -EINVAL; /* BB should we use CIFS_LINUX_DOM */
         dom_name_len = strlen(ses->domainName);
         if(dom_name_len > MAX_USERNAME_SIZE)
                 return -EINVAL;