The latest kernel from yakkety-proposed does not appear to fix the problem. Note that I did test it on Xenial, not Yakkety, because I do not have an easy way to reproduce the bug that excercises rate-limited printk on Yakkety.
I made sure that the proposed kernel was used by comparing what is getting installed on Yakkety vs Xenial:
Selected version '4.8.0.44.56' (Ubuntu:16.10/yakkety-proposed [ppc64el]) for 'linux-image-generic'
The following additional packages will be installed:
crda iw libnl-3-200 libnl-genl-3-200 linux-firmware linux-image-4.8.0-44-generic
linux-image-extra-4.8.0-44-generic wireless-regdb
Suggested packages:
fdutils linux-doc-4.8.0 | linux-source-4.8.0 linux-tools linux-headers-4.8.0-44-generic
The following NEW packages will be installed:
crda iw libnl-3-200 libnl-genl-3-200 linux-firmware linux-image-4.8.0-44-generic
linux-image-extra-4.8.0-44-generic linux-image-generic wireless-regdb
# uname -a
Linux mmedvede2-test-ratelimit-pkvmci836 4.8.0-44-generic #47-Ubuntu SMP Wed Mar 22 14:27:02 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux
On Xenial
=========
$ sudo apt-get install -y linux-image-generic/yakkety-proposed
Selected version '4.8.0.44.56' (Ubuntu:16.10/yakkety-proposed [ppc64el]) for 'linux-image-generic'
The following additional packages will be installed:
linux-image-4.8.0-44-generic linux-image-extra-4.8.0-44-generic
Suggested packages:
fdutils linux-doc-4.8.0 | linux-source-4.8.0 linux-tools linux-headers-4.8.0-44-generic
The following NEW packages will be installed:
linux-image-4.8.0-44-generic linux-image-extra-4.8.0-44-generic
The following packages will be upgraded:
linux-image-generic
$ uname -a
Linux mmedvede-test-ratelimit-pkvmci8361 4.8.0-44-generic #47-Ubuntu SMP Wed Mar 22 14:27:02 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux
And I was able to reproduce the printk spam on Xenial with the proposed kernel. Did the fix actually get into 4.8.0.44.56?
The latest kernel from yakkety-proposed does not appear to fix the problem. Note that I did test it on Xenial, not Yakkety, because I do not have an easy way to reproduce the bug that excercises rate-limited printk on Yakkety.
I made sure that the proposed kernel was used by comparing what is getting installed on Yakkety vs Xenial:
On Yakkety
==========
$ sudo apt-get install -y linux-image- generic/ yakkety- proposed
Selected version '4.8.0.44.56' (Ubuntu: 16.10/yakkety- proposed [ppc64el]) for 'linux- image-generic' 4.8.0-44- generic image-extra- 4.8.0-44- generic wireless-regdb 4.8.0-44- generic 4.8.0-44- generic image-extra- 4.8.0-44- generic linux-image-generic wireless-regdb
The following additional packages will be installed:
crda iw libnl-3-200 libnl-genl-3-200 linux-firmware linux-image-
linux-
Suggested packages:
fdutils linux-doc-4.8.0 | linux-source-4.8.0 linux-tools linux-headers-
The following NEW packages will be installed:
crda iw libnl-3-200 libnl-genl-3-200 linux-firmware linux-image-
linux-
# uname -a test-ratelimit- pkvmci836 4.8.0-44-generic #47-Ubuntu SMP Wed Mar 22 14:27:02 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux
Linux mmedvede2-
On Xenial
=========
$ sudo apt-get install -y linux-image- generic/ yakkety- proposed 16.10/yakkety- proposed [ppc64el]) for 'linux- image-generic' image-4. 8.0-44- generic linux-image- extra-4. 8.0-44- generic 4.8.0-44- generic image-4. 8.0-44- generic linux-image- extra-4. 8.0-44- generic image-generic
Selected version '4.8.0.44.56' (Ubuntu:
The following additional packages will be installed:
linux-
Suggested packages:
fdutils linux-doc-4.8.0 | linux-source-4.8.0 linux-tools linux-headers-
The following NEW packages will be installed:
linux-
The following packages will be upgraded:
linux-
$ uname -a test-ratelimit- pkvmci8361 4.8.0-44-generic #47-Ubuntu SMP Wed Mar 22 14:27:02 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux
Linux mmedvede-
And I was able to reproduce the printk spam on Xenial with the proposed kernel. Did the fix actually get into 4.8.0.44.56?