1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index ca270f49e6aa..7c7ef7ec908e 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -1553,6 +1553,11 @@ ll_get_grouplock(struct inode *inode, struct file *file, unsigned long arg)
         struct ccc_grouplock    grouplock;
         int                  rc;
 
+        if (arg == 0) {
+                CWARN("group id for group lock must not be 0\n");
+                return -EINVAL;
+        }
+
         if (ll_file_nolock(file))
                 return -EOPNOTSUPP;