ixgbe: fix crash when injecting AER after failed reset

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>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 5e2686d106dbbd89bd42f6e76708ebc8676944ee..c6f9da7990c77c9c8de7134bd689635eb3579663 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -10861,6 +10861,9 @@ 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);