Looking at the security notice that describes this kernel update I see that one of the changes is to do with TCP segmentation offload. Some additional information therefore.
This machine has four Ethernet interfaces: root@skr03:~# lspci | grep Ethernet 00:06.0 Ethernet controller: VIA Technologies, Inc. VT6105M [Rhine-III] (rev 96) 00:07.0 Ethernet controller: VIA Technologies, Inc. VT6105M [Rhine-III] (rev 96) 00:08.0 Ethernet controller: VIA Technologies, Inc. VT6105M [Rhine-III] (rev 96) 00:09.0 Ethernet controller: VIA Technologies, Inc. VT6105M [Rhine-III] (rev 96) It uses the via-rhine driver: root@skr03:~# ethtool -i eth0 driver: via-rhine version: 1.4.3 firmware-version: bus-info: 0000:00:06.0 TCP segmentation offload is not being used: root@skr03:~# (ethtool -k eth0 ; ethtool -k eth1 ; ethtool -k eth2 ; ethtool -k eth3) | grep tcp-segmentation-offload tcp-segmentation-offload: off tcp-segmentation-offload: off tcp-segmentation-offload: off tcp-segmentation-offload: off -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1052861 Title: After upgrade to new kernel version, machine crashes after a few hours of uptime To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1052861/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs