drbd: check return of kmalloc in receive_uuids

Signed-off-by: Jing Wang <windsdaemon@gmail.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 0331ad0b61e1..9a9d4fd264a9 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3663,6 +3663,10 @@ static int receive_uuids(struct drbd_tconn *tconn, struct packet_info *pi)
                 return config_unknown_volume(tconn, pi);
 
         p_uuid = kmalloc(sizeof(u64)*UI_EXTENDED_SIZE, GFP_NOIO);
+        if (!p_uuid) {
+                dev_err(DEV, "kmalloc of p_uuid failed\n");
+                return false;
+        }
 
         for (i = UI_CURRENT; i < UI_EXTENDED_SIZE; i++)
                 p_uuid[i] = be64_to_cpu(p->uuid[i]);