> From: linux-hyperv-ow...@vger.kernel.org
> <linux-hyperv-ow...@vger.kernel.org> On Behalf Of Dexuan Cui
> Sent: Monday, August 5, 2019 4:56 PM
> The warning is caused by the rcu_dereference_rtnl() :
>
> 1239 static void netvsc_get_stats64(struct net_device *net,
> 1240 struct rtnl_link_stats64 *t)
> 1241 {
> 1242 struct net_device_context *ndev_ctx = netdev_priv(net);
> 1243 struct netvsc_device *nvdev =
> rcu_dereference_rtnl(ndev_ctx->nvdev);
>
> I think here netvsc_get_stats64() neither holds rcu_read_lock() nor RTNL
>
> IMO it should call rcu_read_lock()/unlock(), or get RTNL to fix the warning?
I just posted a patch on behalf of Stephen:
[PATCH net] hv_netvsc: Fix a warning of suspicious RCU usage
Thanks,
-- Dexuan
