xfrm: fix gro_cells leak when remove virtual xfrm interfaces

The device gro_cells has been initialized, it should be freed,
otherwise it will be leaked

Fixes: f203b76d78092faf2 ("xfrm: Add virtual xfrm interfaces")
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c
index 31acc6f33d98929ec2be31b0aec0469b4d5551fb..6f05e831a73e5c1e20e70c6d6c8102e537f1cb71 100644 (file)
--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -116,6 +116,9 @@ static void xfrmi_unlink(struct xfrmi_net *xfrmn, struct xfrm_if *xi)
 
 static void xfrmi_dev_free(struct net_device *dev)
 {
+       struct xfrm_if *xi = netdev_priv(dev);
+
+       gro_cells_destroy(&xi->gro_cells);
        free_percpu(dev->tstats);
 }