29 lines
956 B
Diff
29 lines
956 B
Diff
|
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
|
||
|
|
@@ -466,6 +466,11 @@ 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 +
|