We ran into this while setting up an OpenStack cloud using IBM POWER8 machines[1]. Unfortunately, hwe-v for Trusty isn't available (LP:1504066) but hwe-u does indeed fix the "Oops: Exception in kernel mode, sig: 4 [#47]" boot loop we ran into.
Since it's been advised here, and in several other bugs that POWER8/ppc64el doesn't work with the main Trusty 3.13 kernel, perhaps we could make MAAS images default to hwe-u and above for ppc64el? [1]http://paste.ubuntu.com/12713436/ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1425699 Title: kernel panic on IBM Power8 PPC MAAS ephemeral image Status in maas-images: New Status in linux package in Ubuntu: Confirmed Status in linux source package in Trusty: Confirmed Bug description: The kernel running on the 14.04 ephemeral image for MAAS when commissioning an IBM Power8 PPC server causes a periodic kernel panic. This happens intermittently and cannot be forcefully reproduced. The kernel version on the image is 3.13.0-27.50-generic according to the boot process. Attached is the boot process log with the kernel panics. To manage notifications about this bug go to: https://bugs.launchpad.net/maas-images/+bug/1425699/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
