On Thu, 01 Aug 2013 at 14:34 GMT, Sebastiano Spicuglia <spicuglia.sebasti...@gmail.com> wrote: > > The machine suddenly stops to be connected to the network. > Running "ifdown eth0" "ifup eth0" the network starts to work > again for few minutes and then the failure happens again. > It is not even possible to ping the machine. > /var/log/messages does not report anything wrong. > > I instrumented the kernel with SystemTap to see what happens when the > machine is in the failure state. > > the function ip_rcv is invoked. > the function ip_rcv_finish is invoked. > the function ip_local_deliver is invoked > the function ip_local_deliver_finish is invoked > the function tcp_v4_rcv is NOT invoked > > When the network works the function tcp_v4_rcv is invoked. >
Please turn off your firewall and run dropwatch to see where the packets are dropped. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
