From: Paolo Abeni <pab...@redhat.com>
Date: Tue, 1 Dec 2015 18:33:36 +0100
> Each openvswitch tunnel vport (vxlan,gre,geneve) holds a reference
> to the underlying tunnel device, but never released it when such
> device is deleted.
> Deleting the underlying device via the ip tool cause the kernel to
> hangup in the netdev_wait_allrefs() loop.
> This commit ensure that on device unregistration dp_detach_port_notify()
> is called for all vports that hold the device reference, properly
> releasing it.
>
> Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device")
> Fixes: b2acd1dc3949 ("openvswitch: Use regular GRE net_device instead of
> vport")
> Fixes: 6b001e682e90 ("openvswitch: Use Geneve device.")
> Signed-off-by: Paolo Abeni <pab...@redhat.com>
Applied and queued up for -stable, thank you.
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