4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Netanel Belgazal <netanel@xxxxxxxxxx> [ Upstream commit 772ed869f535b4ec2b134645c951ff22de4d3f79 ] Starting with driver version 1.5.0, in case of a surprise device unplug, there is a race caused by invoking ena_destroy_device() from two different places. As a result, the readless register might be accessed after it was destroyed. 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 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -3408,12 +3408,12 @@ static void ena_remove(struct pci_dev *p netdev->rx_cpu_rmap = NULL; } #endif /* CONFIG_RFS_ACCEL */ - - unregister_netdev(netdev); del_timer_sync(&adapter->timer_service); cancel_work_sync(&adapter->reset_task); + unregister_netdev(netdev); + /* Reset the device only if the device is running. */ if (test_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags)) ena_com_dev_reset(ena_dev, adapter->reset_reason);
