Re: [PATCH] vmbus: re-enable tasklet

[Stephen Hemminger <stephen@networkplumber.org>]

On Thu, 22 Jun 2017 16:16:54 -0700
Stephen Hemminger <stephen@networkplumber.org> wrote:

> This problem shows up in 4.11 when netvsc driver is removed and reloaded.
> The problem is that the channel is closed during module removal and the
> tasklet for processing responses is disabled. When module is reloaded
> the channel is reopened but the tasklet is marked as disabled.
> 
> Patch for upstream is pending, but less urgent since problem doesn't
> happen with network driver in 4.12.
> 
> Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
> ---
>  drivers/hv/channel.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
> index 321b8833fa6f..36c9ce191b74 100644
> --- a/drivers/hv/channel.c
> +++ b/drivers/hv/channel.c
> @@ -606,6 +606,8 @@ static int vmbus_close_internal(struct vmbus_channel *channel)
>  		get_order(channel->ringbuffer_pagecount * PAGE_SIZE));
>  
>  out:
> +	/* re-enable tasklet for use on re-open */
> +	tasklet_enable(&channel->callback_event);
>  	return ret;
>  }
>  

Ping.

What is the state of this patch? Why is it not queued for 4.11 stable?