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hv_netvsc: fix locking during VF setup

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[ Upstream commit b0dee7910317f41f398838992516af6a3b981d86 ]

The dev_uc/mc_sync calls need to have the device address list
locked. This was spotted by running with lockdep enabled.

Fixes: bee9d41b37ea ("hv_netvsc: propagate rx filters to VF")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stephen Hemminger 2018-03-07 13:49:12 -08:00 committed by Greg Kroah-Hartman
parent b37bc05f44
commit b7f1129a2c
1 changed files with 4 additions and 0 deletions
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4
drivers/net/hyperv/netvsc_drv.c
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@ -1848,8 +1848,12 @@ static void __netvsc_vf_setup(struct net_device *ndev,
/* set multicast etc flags on VF */
dev_change_flags(vf_netdev, ndev->flags | IFF_SLAVE);
/* sync address list from ndev to VF */
netif_addr_lock_bh(ndev);
dev_uc_sync(vf_netdev, ndev);
dev_mc_sync(vf_netdev, ndev);
netif_addr_unlock_bh(ndev);
if (netif_running(ndev)) {
ret = dev_open(vf_netdev);