net: ieee802154: fix a potential NULL pointer dereference

In case alloc_ordered_workqueue fails, the fix releases sources and returns -ENOMEM to avoid NULL pointer dereference. Signed-off-by: Kangjie Lu <[email protected]> Acked-by: Michael Hennerich <[email protected]> Signed-off-by: Stefan Schmidt <[email protected]>
CarlFK · Mar 13, 2019 · 2795e8c · 2795e8c
1 parent 4ec850e
commit 2795e8c
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/drivers/net/ieee802154/adf7242.c b/drivers/net/ieee802154/adf7242.c
@@ -1268,6 +1268,10 @@ static int adf7242_probe(struct spi_device *spi)
 	INIT_DELAYED_WORK(&lp->work, adf7242_rx_cal_work);
 	lp->wqueue = alloc_ordered_workqueue(dev_name(&spi->dev),
 					     WQ_MEM_RECLAIM);
+	if (unlikely(!lp->wqueue)) {
+		ret = -ENOMEM;
+		goto err_hw_init;
+	}
 
 	ret = adf7242_hw_init(lp);
 	if (ret)