提交 fc055dff 编写于 作者: A Aditya Pakki 提交者: Greg Kroah-Hartman

qlcnic: Avoid potential NULL pointer dereference

[ Upstream commit 5bf7295fe34a5251b1d241b9736af4697b590670 ]

netdev_alloc_skb can fail and return a NULL pointer which is
dereferenced without a check. The patch avoids such a scenario.
Signed-off-by: NAditya Pakki <pakki001@umn.edu>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin (Microsoft) <sashal@kernel.org>
上级 98650508
......@@ -1048,6 +1048,8 @@ int qlcnic_do_lb_test(struct qlcnic_adapter *adapter, u8 mode)
for (i = 0; i < QLCNIC_NUM_ILB_PKT; i++) {
skb = netdev_alloc_skb(adapter->netdev, QLCNIC_ILB_PKT_SIZE);
if (!skb)
break;
qlcnic_create_loopback_buff(skb->data, adapter->mac_addr);
skb_put(skb, QLCNIC_ILB_PKT_SIZE);
adapter->ahw->diag_cnt = 0;
......
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