diff --git a/fs/orangefs/orangefs-bufmap.c b/fs/orangefs/orangefs-bufmap.c
index 75375e90a63f32e4bac0ef3e996c960c673b250e..6333cbbdfef7ae652c1a4e6c4d2818ae1cd188d7 100644
--- a/fs/orangefs/orangefs-bufmap.c
+++ b/fs/orangefs/orangefs-bufmap.c
@@ -344,6 +344,11 @@ int orangefs_bufmap_initialize(struct ORANGEFS_dev_map_desc *user_desc)
 		     user_desc->size,
 		     user_desc->count);
 
+	if (user_desc->total_size < 0 ||
+	    user_desc->size < 0 ||
+	    user_desc->count < 0)
+		goto out;
+
 	/*
 	 * sanity check alignment and size of buffer that caller wants to
 	 * work with