4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Netanel Belgazal <netanel@xxxxxxxxxx> [ Upstream commit fe870c77efdf8682252545cbd3d29800d8379efc ] ena_destroy_device() can potentially be called twice. To avoid this, check that the device is running and only then proceed destroying it. Signed-off-by: Netanel Belgazal <netanel@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -2555,6 +2555,9 @@ static void ena_destroy_device(struct en struct ena_com_dev *ena_dev = adapter->ena_dev; bool dev_up; + if (!test_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags)) + return; + netif_carrier_off(netdev); del_timer_sync(&adapter->timer_service); @@ -2591,6 +2594,7 @@ static void ena_destroy_device(struct en adapter->reset_reason = ENA_REGS_RESET_NORMAL; clear_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); + clear_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags); } static int ena_restore_device(struct ena_adapter *adapter) @@ -2635,6 +2639,7 @@ static int ena_restore_device(struct ena } } + set_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags); mod_timer(&adapter->timer_service, round_jiffies(jiffies + HZ)); dev_err(&pdev->dev, "Device reset completed successfully\n");
