diff options
| author |   Haiyang Zhang <haiyangz@microsoft.com> | 2023-11-19 08:23:42 -0800 |
|---|---|---|
| committer |   Paolo Abeni <pabeni@redhat.com> | 2023-11-21 13:15:02 +0100 |
| commit | 85520856466ed6bc3b1ccb013cddac70ceb437db (patch) | |
| tree | f9a47a3aa4cf18bdeab31d3c8edab85dda383f6e /drivers/net/hyperv | |
| parent | hv_netvsc: fix race of netvsc and VF register_netdevice (diff) | |
| download | wireguard-linux-85520856466ed6bc3b1ccb013cddac70ceb437db.tar.xz wireguard-linux-85520856466ed6bc3b1ccb013cddac70ceb437db.zip | |
hv_netvsc: Fix race of register_netdevice_notifier and VF register
If VF NIC is registered earlier, NETDEV_REGISTER event is replayed,
but NETDEV_POST_INIT is not.
Move register_netdevice_notifier() earlier, so the call back
function is set before probing.
Cc: stable@vger.kernel.org
Fixes: e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in netvsc_probe()")
Reported-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/hyperv')
| -rw-r--r-- | drivers/net/hyperv/netvsc_drv.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 5e528a76f5f5..b7dfd51f09e6 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -2793,12 +2793,17 @@ static int __init netvsc_drv_init(void) } netvsc_ring_bytes = ring_size * PAGE_SIZE; + register_netdevice_notifier(&netvsc_netdev_notifier); + ret = vmbus_driver_register(&netvsc_drv); if (ret) - return ret; + goto err_vmbus_reg; - register_netdevice_notifier(&netvsc_netdev_notifier); return 0; + +err_vmbus_reg: + unregister_netdevice_notifier(&netvsc_netdev_notifier); + return ret; } MODULE_LICENSE("GPL"); |