RE: [PATCH net-next 1/1] hv_netvsc: Wait for sub-channels to be processed during probe

[Dexuan Cui <decui@microsoft.com>]

> From: K. Y. Srinivasan
> Sent: Friday, July 17, 2015 3:17
> Subject: [PATCH net-next 1/1] hv_netvsc: Wait for sub-channels to be processed
> during probe
> 
> The current code returns from probe without waiting for the proper handling
> of subchannels that may be requested. If the netvsc driver were to be rapidly
> loaded/unloaded, we can  trigger a panic as the unload will be tearing
> down state that may not have been fully setup yet. We fix this issue by making
> sure that we return from the probe call only after ensuring that the
> sub-channel offers in flight are properly handled.
> 
> ---
>  drivers/net/hyperv/hyperv_net.h   |    2 ++
>  drivers/net/hyperv/rndis_filter.c |   25 +++++++++++++++++++++++++
>  2 files changed, 27 insertions(+), 0 deletions(-)

BTW, not sure if we should make the same fix to storvsc.

IMO storvsc should have the same issue, at least in theory, though usually it's
unlikely to unload storvsc.  :-)

Thanks,
-- Dexuan