diff options
| author | Tom Seewald <tseewald@gmail.com> | 2021-05-03 14:56:52 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-26 13:05:20 +0300 |
| commit | 44fe392e1adc96e535dceaddb85aee2303edb6e3 (patch) | |
| tree | 3b14299099d7eae683fd80d622af09740b7bac18 | |
| parent | 4914c67f1a6228ebd7f74bebbd42f31f7581df2a (diff) | |
| download | linux-44fe392e1adc96e535dceaddb85aee2303edb6e3.tar.xz | |
qlcnic: Add null check after calling netdev_alloc_skb
commit 84460f01cba382553199bc1361f69a872d5abed4 upstream.
The function qlcnic_dl_lb_test() currently calls netdev_alloc_skb()
without checking afterwards that the allocation succeeded. Fix this by
checking if the skb is NULL and returning an error in such a case.
Breaking out of the loop if the skb is NULL is not correct as no error
would be reported to the caller and no message would be printed for the
user.
Cc: David S. Miller <davem@davemloft.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Tom Seewald <tseewald@gmail.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-26-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c index 3b0adda7cc9c..4fb3dcb03819 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c @@ -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) + goto error; qlcnic_create_loopback_buff(skb->data, adapter->mac_addr); skb_put(skb, QLCNIC_ILB_PKT_SIZE); adapter->ahw->diag_cnt = 0; @@ -1071,6 +1073,7 @@ int qlcnic_do_lb_test(struct qlcnic_adapter *adapter, u8 mode) cnt++; } if (cnt != i) { +error: dev_err(&adapter->pdev->dev, "LB Test: failed, TX[%d], RX[%d]\n", i, cnt); if (mode != QLCNIC_ILB_MODE) |