From: Emil Tantilov <emil.s.tantilov@intel.com>
Date: Fri, 29 Sep 2017 10:55:42 -0700
Subject: ixgbe: fix crash when injecting AER after failed reset
Patch-mainline: v4.15-rc1
Git-commit: b64666ae00327efe53613fc180df6ffbeee1d8d1
References: bsc#1101674 FATE#325150 FATE#325151
In case where AER recovery fails the device is left in a down state.
Consecutive AER error injection can lead to a double IRQ free.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -10775,6 +10775,9 @@ skip_bad_vf_detection:
if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
return PCI_ERS_RESULT_DISCONNECT;
+ if (!netif_device_present(netdev))
+ return PCI_ERS_RESULT_DISCONNECT;
+
rtnl_lock();
netif_device_detach(netdev);