diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index d3874e1afba8..4a33638bef25 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -1719,6 +1719,9 @@ int ll_fid2path(struct inode *inode, void __user *arg)
 	if (get_user(pathlen, &gfin->gf_pathlen))
 		return -EFAULT;
 
+	if (pathlen > PATH_MAX)
+		return -EINVAL;
+
 	outsize = sizeof(*gfout) + pathlen;
 
 	OBD_ALLOC(gfout, outsize);