diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 6ab71b9..3ffd27f 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -883,9 +883,13 @@
 		return PCI_ERS_RESULT_DISCONNECT;
 	}
 
+	mutex_lock(&vdev->igate);
+
 	if (vdev->err_trigger)
 		eventfd_signal(vdev->err_trigger, 1);
 
+	mutex_unlock(&vdev->igate);
+
 	vfio_device_put(device);
 
 	return PCI_ERS_RESULT_CAN_RECOVER;