From: Andrea Parri (Microsoft) <parri.andrea@xxxxxxxxx> Sent: Sunday, April 5, 2020 5:15 PM > > vmbus_chan_sched() might call the netvsc driver callback function that > ends up scheduling NAPI work. This "work" can access the channel ring > buffer, so we must ensure that any such work is completed and that the > ring buffer is no longer being accessed before freeing the ring buffer > data structure in the channel closure path. To this end, disable NAPI > before calling vmbus_close() in netvsc_device_remove(). > > Suggested-by: Michael Kelley <mikelley@xxxxxxxxxxxxx> > Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@xxxxxxxxx> > Acked-by: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx> > Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> > Cc: <netdev@xxxxxxxxxxxxxxx> > --- > drivers/hv/channel.c | 6 ++++++ > drivers/net/hyperv/netvsc.c | 7 +++++-- > 2 files changed, 11 insertions(+), 2 deletions(-) > Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>
