Re: [PATCH net-next 1/1] netvsc: fix rtnl deadlock on unregister of vf

2017-08-07 Thread Stephen Hemminger
On Mon, 07 Aug 2017 17:17:19 +0200 Vitaly Kuznetsov wrote: > Vitaly Kuznetsov writes: > > > Vitaly Kuznetsov writes: > > > >> Stephen Hemminger writes: > >> > >>> With new transparent VF support, it is possible to get a deadlock > >>> when some of the deferred work is running and the unre

Re: [PATCH net-next 1/1] netvsc: fix rtnl deadlock on unregister of vf

2017-08-07 Thread Stephen Hemminger
On Mon, 07 Aug 2017 15:37:49 +0200 Vitaly Kuznetsov wrote: > Vitaly Kuznetsov writes: > > > Stephen Hemminger writes: > > > >> With new transparent VF support, it is possible to get a deadlock > >> when some of the deferred work is running and the unregister_vf > >> is trying to cancel the w

Re: [PATCH net-next 1/1] netvsc: fix rtnl deadlock on unregister of vf

2017-08-07 Thread Vitaly Kuznetsov
Vitaly Kuznetsov writes: > Vitaly Kuznetsov writes: > >> Stephen Hemminger writes: >> >>> With new transparent VF support, it is possible to get a deadlock >>> when some of the deferred work is running and the unregister_vf >>> is trying to cancel the work element. The solution is to use >>> tr

Re: [PATCH net-next 1/1] netvsc: fix rtnl deadlock on unregister of vf

2017-08-07 Thread Vitaly Kuznetsov
Vitaly Kuznetsov writes: > Stephen Hemminger writes: > >> With new transparent VF support, it is possible to get a deadlock >> when some of the deferred work is running and the unregister_vf >> is trying to cancel the work element. The solution is to use >> trylock and reschedule (similar to bon

Re: [PATCH net-next 1/1] netvsc: fix rtnl deadlock on unregister of vf

2017-08-07 Thread Vitaly Kuznetsov
Stephen Hemminger writes: > With new transparent VF support, it is possible to get a deadlock > when some of the deferred work is running and the unregister_vf > is trying to cancel the work element. The solution is to use > trylock and reschedule (similar to bonding and team device). > > Reporte

Re: [PATCH net-next 1/1] netvsc: fix rtnl deadlock on unregister of vf

2017-08-06 Thread David Miller
From: Stephen Hemminger Date: Fri, 4 Aug 2017 12:14:00 -0700 > With new transparent VF support, it is possible to get a deadlock > when some of the deferred work is running and the unregister_vf > is trying to cancel the work element. The solution is to use > trylock and reschedule (similar to b

[PATCH net-next 1/1] netvsc: fix rtnl deadlock on unregister of vf

2017-08-04 Thread Stephen Hemminger
With new transparent VF support, it is possible to get a deadlock when some of the deferred work is running and the unregister_vf is trying to cancel the work element. The solution is to use trylock and reschedule (similar to bonding and team device). Reported-by: Vitaly Kuznetsov Fixes: 0c195567