I confirm I'm able to reproduce this bug in Raring using the instructions in the bug description. The problem is upstream commit:
dc7b3eb ipvs: Fix reuse connection if real server is dead It causes a NULL pointer here: 1658 if (unlikely(sysctl_expire_nodest_conn(ipvs)) && cp && cp->dest && 1659 unlikely(!atomic_read(&cp->dest->weight)) && !iph.fragoffs && 1660 is_new_conn(skb, &iph)) { 1661 ip_vs_conn_expire_now(cp); 1662 __ip_vs_conn_put(cp); 1663 cp = NULL; 1664 } when accessing the ipvs variable. In mainline kernel, this variable is initialised; in the 3.8 kernel it is not. I'll post a test kernel with a fix for testing. Another option is to revert the above commit. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1238494 Title: Kernel panic on 3.8.0-29 when using ipvs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1238494/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs