Current 4.4 kernel won't boot on powerpc

Bug #1557130 reported by Stéphane Graber
This bug affects 2 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Fix Released
Andy Whitcroft
Fix Released
Andy Whitcroft

Bug Description

19:06 < stgraber> apw: hey, so looks like powerpc (not 64el) isn't booting with current 4.4 from xenial
19:06 < stgraber> apw: smoser may have some more details for you, all I know is that I dist-upgraded my ppc VM and it stopped booting, smoser had to reboot me into 3.19 manually
19:08 < apw> stgraber, which versoin number is that ?
19:08 < stgraber> ii linux-image-4.4.0-12-powerpc64-smp 4.4.0-12.28 powerpc Linux kernel image for version 4.4.0 on 64-bit PowerPC SMP
19:08 < apw> stgraber, and do you have one which did boot before that, in 4.4 ?
19:08 < smoser> 3.19 booted
19:08 < apw> stgraber, i think we need a bug and i'll get jsalisbury to get this bisected
19:08 < apw> i just realised we don't run adt on power, sigh
19:08 < stgraber> apw: nope, I upgraded from trusty to xenial so it's the first 4.4 I try
19:09 < smoser> qemu cmdline that results in "cant find root" looks like this
19:09 < smoser> qemu-system-ppc64 -name rockne-01 -echr 0x05 -enable-kvm -M pseries -cpu host -smp cores=2,threads=1 -m 8G -net nic,macaddr=52:54:00:00:42:01 -net tap,script=no,downscript=no,ifname=tap4201 -device spapr-vscsi -drive file=/var/lib/libvirt/images/shared/rockne-01/disk1.img -drive file=/var/lib/libvirt/images/shared/rockne-01/eph0.img -drive file=/var/lib/libvirt/images/shared/rockne-01/save.img -nographic -vga none
19:09 < jsalisbury> apw, I'll watch for the bug to come in
19:09 < smoser> where disk1.img has the root filesystem on it.
19:09 < stgraber> apw: the issue is storage related, smoser got dropped into a shell with no block listed in /proc/partitions
19:09 < smoser> only ram disks.

tags: added: kernel-key
Revision history for this message
Andy Whitcroft (apw) wrote :

00:35:38 infinity | apw:
00:37:21 infinity | apw: Please to cherrypick, thanks.

Changed in linux (Ubuntu Xenial):
assignee: nobody → Andy Whitcroft (apw)
tags: added: kernel-da-key
removed: kernel-key
Revision history for this message
Adam Conrad (adconrad) wrote :

Confirmed that this kernel fixes the bug. \o/

ubuntu@ubuntu:~$ lsmod
Module Size Used by
ibmveth 33006 0
isofs 47482 0
rtc_generic 3175 0
autofs4 53554 2
ibmvscsi 37156 0
ubuntu@ubuntu:~$ cat /proc/version_signature
Ubuntu 4.4.0-14.30-powerpc64-smp 4.4.5

Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux - 4.4.0-14.30

linux (4.4.0-14.30) xenial; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1557508

  * Current 4.4 kernel won't boot on powerpc (LP: #1557130)
    - powerpc: Fix dedotify for binutils >= 2.26

  * ZFS: send fails to transmit some holes [corruption] (LP: #1557151)
    - Illumos 6370 - ZFS send fails to transmit some holes

  * Request to cherry-pick uvcvideo patch for Xenial kernel support of RealSense
    camera (LP: #1557138)
    - UVC: Add support for ds4 depth camera

  * use after free of task_struct->numa_faults in task_numa_find_cpu (LP: #1527643)
    - sched/numa: Fix use-after-free bug in the task_numa_compare

  * overlay fs regression: chmod fails with "Operation not permitted" on chowned
    files (LP: #1555997)
    - ovl: copy new uid/gid into overlayfs runtime inode

  * Miscellaneous Ubuntu changes
    - SAUCE: Dump stack when X.509 certificates cannot be loaded

 -- Tim Gardner <email address hidden> Mon, 14 Mar 2016 07:16:19 -0600

Changed in linux (Ubuntu Xenial):
status: Triaged → Fix Released
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