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Message-ID: <AANLkTi=oXDgEhEjt7V+Z4Pk8kv9X4Z8aCg2yAJDzuJ1J@mail.gmail.com> Date: Mon, 6 Sep 2010 01:18:06 +0800 From: Changli Gao <xiaosuo@...il.com> To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet <eric.dumazet@...il.com> Cc: Linux Netdev List <netdev@...r.kernel.org> Subject: net: af_packet: skb_orphan should be avoided in TX path. af_packet uses tpacket_destruct_skb() to notify its user a frame is sent out through NIC, and the memory for that frame is available for the others. If the driver calls skb_orphan() before the frame is sent out successfully, and the user may fill other data into the space for this frame, this frame will be corrupted. It became more likely after skb_try_orphan() was added into dev_hard_start_xmit(). Am I correct? -- Regards, Changli Gao(xiaosuo@...il.com) -- 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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