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- From f1640c3ddeec12804bc9a21feee85fc15aca95f6 Mon Sep 17 00:00:00 2001
- From: wangweidong <wangweidong1@huawei.com>
- Date: Wed, 13 Jan 2016 11:06:41 +0800
- Subject: [PATCH] bgmac: fix a missing check for build_skb
- when build_skb failed, it may occure a NULL pointer.
- So add a 'NULL check' for it.
- Signed-off-by: Weidong Wang <wangweidong1@huawei.com>
- Signed-off-by: David S. Miller <davem@davemloft.net>
- ---
- drivers/net/ethernet/broadcom/bgmac.c | 5 +++++
- 1 file changed, 5 insertions(+)
- --- a/drivers/net/ethernet/broadcom/bgmac.c
- +++ b/drivers/net/ethernet/broadcom/bgmac.c
- @@ -469,6 +469,11 @@ static int bgmac_dma_rx_read(struct bgma
- len -= ETH_FCS_LEN;
-
- skb = build_skb(buf, BGMAC_RX_ALLOC_SIZE);
- + if (unlikely(skb)) {
- + bgmac_err(bgmac, "build_skb failed\n");
- + put_page(virt_to_head_page(buf));
- + break;
- + }
- skb_put(skb, BGMAC_RX_FRAME_OFFSET +
- BGMAC_RX_BUF_OFFSET + len);
- skb_pull(skb, BGMAC_RX_FRAME_OFFSET +
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