bnx2x: Prevent null pointer dereference on SKB release

On error flows its possible to free an SKB even if it was not allocated.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index a90d7364334f9dfa3687dc813e068508a342861c..f7fbdc9d132511b72df0db2ce0b92e4df0774c44 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -262,9 +262,9 @@ static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
        if (likely(skb)) {
                (*pkts_compl)++;
                (*bytes_compl) += skb->len;
+               dev_kfree_skb_any(skb);
        }
 
-       dev_kfree_skb_any(skb);
        tx_buf->first_bd = 0;
        tx_buf->skb = NULL;