> -----Original Message----- > From: Vitaly Kuznetsov [mailto:vkuznets@xxxxxxxxxx] > Sent: Thursday, August 11, 2016 6:59 AM > To: netdev@xxxxxxxxxxxxxxx > Cc: devel@xxxxxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Haiyang > Zhang <haiyangz@xxxxxxxxxxxxx>; KY Srinivasan <kys@xxxxxxxxxxxxx> > Subject: [PATCH net 3/4] hv_netvsc: protect module refcount by checking > net_device_ctx->vf_netdev > > We're not guaranteed to see NETDEV_REGISTER/NETDEV_UNREGISTER > notifications > only once per VF but we increase/decrease module refcount unconditionally. > Check vf_netdev to make sure we don't take/release it twice. We presume > that only one VF per netvsc device may exist. > > Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> Acked-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
