From 944b28aa2982b4590d4d4dfc777cf85135dca2c0 Mon Sep 17 00:00:00 2001 From: Netanel Belgazal Date: Sun, 9 Sep 2018 08:15:24 +0000 Subject: [PATCH] net: ena: fix missing lock during device destruction acquire the rtnl_lock during device destruction to avoid using partially destroyed device. ena_remove() shares almost the same logic as ena_destroy_device(), so use ena_destroy_device() and avoid duplications. Signed-off-by: Netanel Belgazal Signed-off-by: David S. Miller --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 20 +++++++------------- 1 file changed, 7 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index a68c2a8d4da2..b9ce2a6a87ed 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -3421,24 +3421,18 @@ static void ena_remove(struct pci_dev *pdev) unregister_netdev(netdev); - /* Reset the device only if the device is running. */ + /* If the device is running then we want to make sure the device will be + * reset to make sure no more events will be issued by the device. + */ if (test_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags)) - ena_com_dev_reset(ena_dev, adapter->reset_reason); + set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags); - ena_free_mgmnt_irq(adapter); - - ena_disable_msix(adapter); + rtnl_lock(); + ena_destroy_device(adapter, true); + rtnl_unlock(); free_netdev(netdev); - ena_com_mmio_reg_read_request_destroy(ena_dev); - - ena_com_abort_admin_commands(ena_dev); - - ena_com_wait_for_abort_completion(ena_dev); - - ena_com_admin_destroy(ena_dev); - ena_com_rss_destroy(ena_dev); ena_com_delete_debug_area(ena_dev);