commit
bb8e6a1ee881d131e404f0f1f5e8dc9281002771 upstream.
We may get a NULL pointer here if skb allocation for Rx packet
was failed earlier.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rd_index = card->rxbd_rdptr & reg->rx_mask;
skb_data = card->rx_buf_list[rd_index];
+ /* If skb allocation was failed earlier for Rx packet,
+ * rx_buf_list[rd_index] would have been left with a NULL.
+ */
+ if (!skb_data)
+ return -ENOMEM;
+
MWIFIEX_SKB_PACB(skb_data, &buf_pa);
pci_unmap_single(card->dev, buf_pa, MWIFIEX_RX_DATA_BUF_SIZE,
PCI_DMA_FROMDEVICE);