Eric Dumazet <eric.dumazet@xxxxxxxxx> writes: > On Wed, 2013-04-03 at 17:19 -0700, Eric Dumazet wrote: > >> Well, yes, this commit fixes a real bug : We were coalescing two >> messages into a single one, even if the senders were different. > > By the way, the 'LSB' test program can be found here : > > https://lsbbugs.linuxfoundation.org/attachment.cgi?id=2144 And we have two sends and one recvfrom, and no loops. So the the problem must be a failure to coalesce messages. There is a race between creating the sending and receiving sockets. At a first glance that race looks like we put the cred on the first message and not on the second message because we are connected by the time the second messages is sent. Which would definitely cause a failure to coallesce messages. Eric -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html