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 Mon, 14 Mar 2016 07:16:19
-0600
** Changed in: linux (Ubuntu Xenial)
Status: Triaged => Fix Released
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https://bugs.launchpad.net/bugs/1557130
Title:
Current 4.4 kernel won't boot on powerpc
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Released
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-smp4.4.0-12.28
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.
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