Commit fbd4c7e7 authored Jun 07, 2017 by stephen hemminger Committed by David S. Miller Jun 08, 2017

netvsc: fix rcu dereference warning from ethtool



The ethtool info command calls the netvsc get_sset_count with RTNL
but not with RCU. Which causes warning:

drivers/net/hyperv/netvsc_drv.c:1010 suspicious rcu_dereference_check() usage!

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 8397ed36

drivers/net/hyperv/netvsc_drv.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1028,7 +1028,7 @@ static const struct {
		static int netvsc_get_sset_count(struct net_device *dev, int string_set)
		{
		struct net_device_context *ndc = netdev_priv(dev);
		struct netvsc_device *nvdev = rcu_dereference(ndc->nvdev);
		struct netvsc_device *nvdev = rtnl_dereference(ndc->nvdev);

		if (!nvdev)
		return -ENODEV;