netdev - [PATCH] qlcnic: Avoid double free of skb in tx path

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Date:	Fri,  3 Jun 2011 08:52:18 -0700
From:	Anirban Chakraborty <anirban.chakraborty@...gic.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org,
	Dept_NX_Linux_NIC_Driver <Dept_NX_Linux_NIC_Driver@...gic.com>,
	sucheta.chakraborty@...gic.com,
	Anirban Chakraborty <anirban.chakraborty@...gic.com>
Subject: [PATCH] qlcnic: Avoid double free of skb in tx path

From: Sucheta Chakraborty <sucheta.chakraborty@...gic.com>

buffer->skb should be marked NULL to avoid double free of the skb.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@...gic.com>
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@...gic.com>
---
 drivers/net/qlcnic/qlcnic_main.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 3ab7d2c..0f6af5c 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -2159,6 +2159,7 @@ qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
 
 	nf = &pbuf->frag_array[0];
 	pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
+	pbuf->skb = NULL;
 }
 
 static inline void
-- 
1.7.4.1

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