From: Arthur Kiyanovski Date: Tue, 9 Oct 2018 08:21:28 +0000 (+0300) Subject: net: ena: fix rare bug when failed restart/resume is followed by driver removal X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=d7703ddbd7c9cb1ab7c08e1b85b314ff8cea38e9;p=openwrt%2Fstaging%2Fblogic.git net: ena: fix rare bug when failed restart/resume is followed by driver removal In a rare scenario when ena_device_restore() fails, followed by device remove, an FLR will not be issued. In this case, the device will keep sending asynchronous AENQ keep-alive events, even after driver removal, leading to memory corruption. Fixes: 8c5c7abdeb2d ("net: ena: add power management ops to the ENA driver") Signed-off-by: Arthur Kiyanovski Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index 78d84ca0a378..ce18e07ff5ad 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -2619,7 +2619,11 @@ err_disable_msix: ena_free_mgmnt_irq(adapter); ena_disable_msix(adapter); err_device_destroy: + ena_com_abort_admin_commands(ena_dev); + ena_com_wait_for_abort_completion(ena_dev); ena_com_admin_destroy(ena_dev); + ena_com_mmio_reg_read_request_destroy(ena_dev); + ena_com_dev_reset(ena_dev, ENA_REGS_RESET_DRIVER_INVALID_STATE); err: clear_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags); clear_bit(ENA_FLAG_ONGOING_RESET, &adapter->flags);