damuzi000 75e4364f67 net: stmmac: fix NULL pointer dereference in stmmac_get_tx_hwtstamp ... When timestamping is enabled, stmmac_tx_clean will call stmmac_get_tx_hwtstamp to get tx TS. But the skb can be NULL because the last of its tx_skbuff is NULL if this packet frame is filled in more than one descriptors. To fix the issue, change the code: - Store TX skb to the tx_skbuff[] of frame's last segment. - Check skb is not NULL in stmmac_get_tx_hwtstamp. Signed-off-by: Bruce Liu <damuzi000@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-01-19 20:02:45 -08:00
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stmmac	net: stmmac: fix NULL pointer dereference in stmmac_get_tx_hwtstamp	2014-01-19 20:02:45 -08:00
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