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Date: Sun, 19 Jan 2014 20:03:52 -0800 (PST) From: David Miller <davem@...emloft.net> To: damuzi000@...il.com Cc: peppe.cavallaro@...com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] [PATCH net-next v2] net: stmmac: fix NULL pointer dereference in stmmac_get_tx_hwtstamp From: Bruce Liu <damuzi000@...il.com> Date: Fri, 17 Jan 2014 23:47:59 +0800 > 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@...il.com> Looks a lot better, applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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