From 4280b73092fe136d412db9e8e0d69cbc753cdac6 Mon Sep 17 00:00:00 2001
From: Kangjie Lu <kjlu@umn.edu>
Date: Mon, 11 Mar 2019 01:53:15 -0500
Subject: [PATCH] net: qlge: fix a potential NULL pointer dereference
In case alloc_ordered_workqueue fails, the fix returns
-ENOMEM to avoid NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/qlogic/qlge/qlge_main.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
index 096515c272633..07e1c623048e5 100644
--- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c
+++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
@@ -4681,6 +4681,11 @@ static int ql_init_device(struct pci_dev *pdev, struct net_device *ndev,
*/
qdev->workqueue = alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM,
ndev->name);
+ if (!qdev->workqueue) {
+ err = -ENOMEM;
+ goto err_out2;
+ }
+
INIT_DELAYED_WORK(&qdev->asic_reset_work, ql_asic_reset_work);
INIT_DELAYED_WORK(&qdev->mpi_reset_work, ql_mpi_reset_work);
INIT_DELAYED_WORK(&qdev->mpi_work, ql_mpi_work);
--
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