unix/dgram: peek beyond 0-sized skbs
"77c1090f net: fix infinite loop in __skb_recv_datagram()" (v3.8) introduced a regression: After that commit, recv can no longer peek beyond a 0-sized skb in the queue. __skb_recv_datagram() instead stops at the first skb with len == 0 and results in the system call failing with -EFAULT via skb_copy_datagram_iovec(). When peeking at an offset with 0-sized skb(s), each one of those is received only once, in sequence. The offset starts moving forward again after receiving datagrams with len > 0. Signed-off-by:Benjamin Poirier <bpoirier@suse.de> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
e5195c1f
Please register or sign in to comment