On Thu, Dec 1, 2016 at 3:02 PM, Eric Dumazet <eric.duma...@gmail.com> wrote:
> From: Eric Dumazet <eduma...@google.com>
> My recent commit to get more precise rx/tx counters in ndo_get_stats64()
> can lead to crashes at device dismantle, as Jesper found out.
> We must prevent mlx4_en_fold_software_stats() trying to access
> tx/rx rings if they are deleted.
> Fix this by adding a test against priv->port_up in
> Calling mlx4_en_fold_software_stats() from mlx4_en_stop_port()
> allows us to eventually broadcast the latest/current counters to
> rtnetlink monitors.
> Fixes: 40931b85113d ("mlx4: give precise rx/tx bytes/packets counters")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Reported-and-bisected-by: Jesper Dangaard Brouer <bro...@redhat.com>
> Tested-by: Jesper Dangaard Brouer <bro...@redhat.com>
> Cc: Tariq Toukan <tar...@mellanox.com>
> Cc: Saeed Mahameed <sae...@dev.mellanox.co.il>
Acked-by: Saeed Mahameed <sae...@mellanox.com>