Hi Pavel,
On 04.05.2017 18:33, Pavel Belous wrote:
> From: Pavel Belous <pavel.bel...@aquantia.com>
>
> This patch fixes the crash that happens when driver tries to collect
> statistics
> from already released "aq_vec" object.
>
> Fixes: 97bde5c4f909 ("net: ethernet: aquantia: Support for NIC-specific code")
> Signed-off-by: Pavel Belous <pavel.bel...@aquantia.com>
> ---
> drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
> b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
> index cdb0299..3a32573 100644
> --- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
> +++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
> @@ -755,7 +755,7 @@ void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
> count = 0U;
>
> for (i = 0U, aq_vec = self->aq_vec[0];
> - self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
> + aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
> data += count;
> aq_vec_get_sw_stats(aq_vec, data, &count);
> }
> @@ -961,6 +961,7 @@ void aq_nic_free_hot_resources(struct aq_nic_s *self)
> for (i = AQ_DIMOF(self->aq_vec); i--;) {
> if (self->aq_vec[i])
> aq_vec_free(self->aq_vec[i]);
> + self->aq_vec[i] = NULL;
> }
>
> err_exit:;
>
if the driver does not support statistics when the interface is down, would not
it be clearer
to check if netif_running() in get_stats() instead?
Regards,
Lino
