From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f181.google.com ([209.85.192.181]:34519 "EHLO mail-pf0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751666AbdF2XbY (ORCPT ); Thu, 29 Jun 2017 19:31:24 -0400 Received: by mail-pf0-f181.google.com with SMTP id s66so57664549pfs.1 for ; Thu, 29 Jun 2017 16:31:24 -0700 (PDT) Date: Thu, 29 Jun 2017 16:31:20 -0700 From: Stephen Hemminger To: kys@microsoft.com, haiyang@microsoft.com Cc: devel@linuxdriverproject.org, stable@vger.kernel.org, Greg KH Subject: Re: [PATCH] vmbus: re-enable tasklet Message-ID: <20170629163120.42d75fc3@xeon-e3> In-Reply-To: <20170622231654.14474-1-sthemmin@microsoft.com> References: <20170622231654.14474-1-sthemmin@microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org List-ID: On Thu, 22 Jun 2017 16:16:54 -0700 Stephen Hemminger 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 > --- > 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?