Patch "bgmac: fix a missing check for build_skb" has been added to the 4.4-stable tree

Patch "bgmac: fix a missing check for build_skb" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    bgmac: fix a missing check for build_skb

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     bgmac-fix-a-missing-check-for-build_skb.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From f1640c3ddeec12804bc9a21feee85fc15aca95f6 Mon Sep 17 00:00:00 2001
From: wangweidong <wangweidong1@huawei.com>
Date: Wed, 13 Jan 2016 11:06:41 +0800
Subject: bgmac: fix a missing check for build_skb

From: wangweidong <wangweidong1@huawei.com>

commit f1640c3ddeec12804bc9a21feee85fc15aca95f6 upstream.

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>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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 +


Patches currently in stable-queue which might be from wangweidong1@huawei.com are

queue-4.4/bgmac-fix-a-missing-check-for-build_skb.patch