Archive for June, 2012

Leann Ogasawara

[Quantal] linux kernel 3.5.0-2.2 uploaded (ABI Bump)

We have uploaded a new Quantal linux kernel to quantal-proposed. Please note the ABI Bump. The most notable changes are as follows:

* Rebase to upstream v3.5-rc4
* Add hid-generic to input-modules udeb (LP:1017879)
* brcmsmac regulatory rework (LP:950320)
* Revert “mmc: omap_hsmmc: Enable Auto CMD12″ (LP:1017717)
* Revert “Fix OMAP EHCI suspend/resume failure (i693)” (LP:1017718)
* add .gnu_debuglink sections to .ko files (LP:669641)
* Misc config changes

The full changelog can be seen at:

https://launchpad.net/ubuntu/+source/linux/3.5.0-2.2

Joseph Salisbury

Kernel Team Meeting Minutes – June 26, 2012

Meeting Minutes

IRC Log of the meeting.

Meeting minutes.

Agenda

20120626 Meeting Agenda


ARM Status

Q/omap4: nothing new this week – for alpha2 we are going to use alpha1 kernel, but after we cut this milestone, work on a 3.5 “almost vanilla” kernel will immediately start.
Q/omap3: 3.5rcX came with regressions in different subsets (video, mmc and usb) – a pending kernel (3.5.2-2) should have fixed all these issues.


Release Metrics and Incoming Bugs

Release metrics and incoming bug data can be reviewed at the following link:

http://people.canonical.com/~kernel/reports/kt-meeting.txt


Milestone Targeted Work Items

If your name is in the above table, please review your Alpha-2 work
items.

   apw    hardware-q-kernel-config-review    1 work item   
      hardware-q-kernel-delta-review    3 work items   
      hardware-q-kernel-versions-and-flavors    1 work item   
   cking    hardware-q-kernel-delta-review    3 work items   
   cooloney    hardware-q-kernel-config-review    1 work item   
   jjohansen    hardware-q-kernel-config-review    1 work item   
   jk-    hardware-q-kernel-config-review    2 work items   
   ogasawara    hardware-q-kernel-config-review    1 work items   
   ppisati    hardware-q-kernel-config-review    1 work item   
   smb    hardware-q-kernel-delta-review    1 work item   
   tgardner    hardware-q-kernel-config-review    2 work items   
      hardware-q-kernel-delta-review    1 work items   
   kernel-team    hardware-q-kernel-config-review    3 work items   
      hardware-q-kernel-versions-and-flavors    2 work items   


Status: Quantal Development Kernel

We have recently rebased the Quantal kernel to the latest v3.5-rc4
upstream kernel and have also uploaded. We hope for this to land in the
Alpha 2 images. This also contains some critical bug fixes for omap3 and
i386 cloud images. It’s currently building in the quantal-proposed
pocket. This will also get uploaded to the q-lts-backport [1] PPA to
help facilitate testing of the 12.10 kernel in 12.04. We welcome any
early adopters to please install, test, and let us know your feedback.
[1] https://launchpad.net/~ubuntu-x-swat/+archive/q-lts-backport
Important upcoming dates:

  • Thurs Jun 28 – Alpha 2 (2 days)
  • Thurs July 26 – Alpha 3 (~4 weeks)


Status: CVE’s

== 2012-06-26 (weekly) ==
Currently we have 91 CVEs on our radar, with one CVE retired this week.
See the CVE matrix for the current list:

http://people.canonical.com/~kernel/cve/pkg/ALL-linux.html

Overall the backlog has decreased slightly this week:

http://people.canonical.com/~kernel/status/cve-metrics.txt

http://people.canonical.com/~kernel/cve/pkg/CVE-linux.txt


Status: Stable, Security, and Bugfix Kernel Updates – Precise/Oneiric/Natty/Lucid/Hardy

Here is the status for the main kernels, until today (June 26):

  • Hardy – 2.6.24-31.102 – Waiting to go to -updates; 2 CVEs
  • Lucid – 2.6.32-41.91 – Waiting to go to -updates; 2 CVEs
  • Natty – 2.6.38-15.61 – Waiting to go to -updates; 3 CVEs
  • Oneiric – 3.0.0-22.36 – Waiting to go to -updates; 1 upstream stable release (approx. 60 commits), 1 CVE
  • Precise – 3.2.0-26.41 – In testing; 1 upstream stable release (approx. 137 commits)

    Current opened tracking bugs details:

  • http://people.canonical.com/~kernel/reports/kernel-sru-workflow.html

    For SRUs, SRU report is a good source of information:

  • http://people.canonical.com/~kernel/reports/sru-report.html

    Future stable cadence cycles:

  • https://wiki.ubuntu.com/QuantalQuetzal/ReleaseInterlock

    The week of Sept. 6 is the week the last Natty kernel will be
    built.


Open Discussion or Questions? Raise your hand to be recognized

No open discussions.

Joseph Salisbury

Kernel Team Meeting Minutes – June 19, 2012

Meeting Minutes

IRC Log of the meeting.

Meeting minutes.

Agenda

20120619 Meeting Agenda


ARM Status

Q/omap4: nothing new this week.
Q/omap3: i’m tracking down a fs corruption problem in 3.5rcX, a hang during boot related to voltage scaling and did some more debugging on kexec/usb.


Release Metrics and Incoming Bugs

Release metrics and incoming bug data can be reviewed at the following link:

http://people.canonical.com/~kernel/reports/kt-meeting.txt


Milestone Targeted Work Items

If your name is in the above table, please review your Alpha-2 work
items.

   apw    hardware-q-kernel-config-review    4 work item   
      hardware-q-kernel-delta-review    3 work items   
      hardware-q-kernel-versions-and-flavors    1 work item   
   cking    hardware-q-kernel-delta-review    3 work items   
   cooloney    hardware-q-kernel-config-review    1 work item   
   jjohansen    hardware-q-kernel-config-review    1 work item   
   jk-    hardware-q-kernel-config-review    2 work items   
   ogasawara    hardware-q-kernel-config-review    2 work items   
   ppisati    hardware-q-kernel-config-review    1 work item   
   sforshee    hardware-q-kernel-delta-review    1 work item   
   smb    hardware-q-kernel-delta-review    1 work item   
      hardware-q-kernel-versions-and-flavors    1 work item   
   tgardner    hardware-q-kernel-config-review    2 work items   
      hardware-q-kernel-delta-review    1 work items   
   kernel-team    hardware-q-kernel-config-review    3 work items   
      hardware-q-kernel-versions-and-flavors    2 work items   


Status: Quantal Development Kernel

We have recently rebased the Quantal kernel to the latest v3.5-rc3
upstream kernel and have also uploaded. It’s currently building in the
archive but should be available for testing in the near future. We
welcome any feedback. This will also get uploaded to the q-lts-backport
[1] PPA to help facilitate testing of the 12.10 kernel in 12.04. We
welcome any early adopters to please install, test, and let us know your
feedback there as well.
[1] https://launchpad.net/~ubuntu-x-swat/+archive/q-lts-backport
Important upcoming dates:

  • Thurs Jun 28 – Alpha 2 (~1 weeks)

    • Note there is some interesting discussions happening on the
      ubuntu-devel mailing list regarding completely dropping the Alpha’s
      and Beta’s and moving to a 2 week release cadence


Status: CVE’s

== 2012-06-19 (weekly) ==
Currently we have 89 CVEs on our radar, with one CVE retired this week.
See the CVE matrix for the current list:

http://people.canonical.com/~kernel/cve/pkg/ALL-linux.html

Overall the backlog has decreased slightly this week:

http://people.canonical.com/~kernel/status/cve-metrics.txt

http://people.canonical.com/~kernel/cve/pkg/CVE-linux.txt


Status: Stable, Security, and Bugfix Kernel Updates – Precise/Oneiric/Natty/Lucid/Hardy

Here is the status for the main kernels, until today (June 05):

  • Hardy – 2.6.24-31.102 – Verified, ready for testing; 2 CVEs
  • Lucid – 2.6.32-41.91 – Verified, ready for testing; 2 CVEs
  • Natty – 2.6.38-15.61 – Verified, ready for testing; 3 CVEs
  • Oneiric – 3.0.0-22.36 – Verified, ready for testing; 1 upstream stable release (approx. 60 commits), 1 CVE
  • Precise – 3.2.0-26.41 – In verification; 1 upstream stable release (approx. 137 commits)

    Current opened tracking bugs details:

  • http://people.canonical.com/~kernel/reports/kernel-sru-workflow.html

    For SRUs, SRU report is a good source of information:

  • http://people.canonical.com/~kernel/reports/sru-report.html

    Future stable cadence cycles:

  • https://wiki.ubuntu.com/QuantalQuetzal/ReleaseInterlock

    The week of Sept. 6 is the week the last Natty kernel will be
    built.


Open Discussion or Questions? Raise your hand to be recognized

No open discussion.

Leann Ogasawara

[Quantal] linux kernel 3.5.0-1.1 uploaded (Version Bump)

We have uploaded a new Quantal linux kernel to quantal-proposed. Please note the version bump. The most notable changes are as follows:

* Rebase to upstream v3.5-rc3 Linux kernel
* Misc config updates
* Re-enable dm-raid45 driver

The full changelog can be seen at:

https://launchpad.net/ubuntu/+source/linux/3.5.0-1.1

Joseph Salisbury

Kernel Team Meeting Minutes – June 12, 2012

Meeting Minutes

IRC Log of the meeting.

Meeting minutes.

Agenda

20120612 Meeting Agenda


ARM Status

Q/omap4: no new code was committed since last week, kept working on the configuration (delta reduction against master).


Release Metrics and Incoming Bugs

Release metrics and incoming bug data can be reviewed at the following link:

http://people.canonical.com/~kernel/reports/kt-meeting.txt


Milestone Targeted Work Items

If your name is in the above table, please review your Alpha-2 work
items.

   apw    hardware-q-kernel-config-review    4 work item   
      hardware-q-kernel-delta-review    3 work items   
      hardware-q-kernel-versions-and-flavors    1 work item   
   cking    hardware-q-kernel-delta-review    2 work items   
   cooloney    hardware-q-kernel-config-review    1 work item   
   jjohansen    hardware-q-kernel-config-review    1 work item   
   jk-    hardware-q-kernel-config-review    2 work items   
   ogasawara    hardware-q-kernel-config-review    2 work items   
   cyphermox    hardware-q-kernel-delta-review    1 work item   
   ppisati    hardware-q-kernel-config-review    1 work item   
   sforshee    hardware-q-kernel-delta-review    1 work item   
   smb    hardware-q-kernel-delta-review    1 work item   
      hardware-q-kernel-versions-and-flavors    1 work item   
   tgardner    hardware-q-kernel-config-review    2 work items   
      hardware-q-kernel-delta-review    2 work items   
   tlei    hardware-q-kernel-delta-review    2 work items   
   kernel-team    hardware-q-kernel-config-review    3 work items   
      hardware-q-kernel-versions-and-flavors    2 work items   


Status: Quantal Development Kernel

We have recently rebased the Quantal kernel to the latest v3.5-rc2
upstream kernel. I’d like to see a little more smoke testing before
uploading.
We’ve also began providing the 12.10 kernel for 12.04. We welcome any
early adopters to please install, test, and let us know your feedback.
It is available from the following PPA:

https://launchpad.net/~ubuntu-x-swat/+archive/q-lts-backport

Important upcoming dates:

  • Thurs Jun 28 – Alpha 2 (~2 weeks)


Status: Stable, Security, and Bugfix Kernel Updates – Precise/Oneiric/Natty/Lucid/Hardy

Here is the status for the main kernels, until today (June 05):

  • Hardy – 2.6.24-31.102 – Being prepared; 2 CVEs
  • Lucid – 2.6.32-41.91 – Being prepared; 2 CVEs
  • Natty – 2.6.38-15.61 – Being prepared; 3 CVEs
  • Oneiric – 3.0.0-22.36 – Being prepared; 1 upstream stable release (approx. 60 commits), 1 CVE
  • Precise – 3.2.0-26.41 – Being prepared; 1 upstream stable release (approx. 137 commits)

    Current opened tracking bugs details:

  • http://people.canonical.com/~kernel/reports/kernel-sru-workflow.html

    For SRUs, SRU report is a good source of information:

  • http://people.canonical.com/~kernel/reports/sru-report.html

    Future stable cadence cycles:

  • https://wiki.ubuntu.com/QuantalQuetzal/ReleaseInterlock


Status: CVE’s

== 2012-06-12 (weekly) ==
Currently we have 89 CVEs on our radar, with 0 new CVEs added this week.
See the CVE matrix for the current list:

http://people.canonical.com/~kernel/cve/pkg/ALL-linux.html

There is no change in the backlog this week:

http://people.canonical.com/~kernel/status/cve-metrics.txt

http://people.canonical.com/~kernel/cve/pkg/CVE-linux.txt


Open Discussion or Questions? Raise your hand to be recognized

kamal:
I’ve recently been working with the upstream Bufferbloat group: http://www.bufferbloat.net …
They have implemented new network scheduler algorithms designed to address the performance drag induced by large unmanaged network buffers. The new stuff (“fq_codel” and “codel”) just landed in linux 3.5.
A good article about the bufferbloat problem and the new scheduling algo’s is here: http://queue.acm.org/detail.cfm?id=2209336
The result is *very* impressive: I see a 30X reduction in ping latency on a fully saturated 10Mbps network, just by switching on the new fq_codel scheduler.
For an interactive ssh session over that same saturated 10Mbps network, fq_codel totally eliminates the laggy keyboard response — it feels like there’s no other network traffic at all!
I have produced a Bufferbloat PPA to allow us to experiment with this stuff now in Precise and Quantal:

https://launchpad.net/~kamalmostafa/+archive/bufferbloat

The PPA includes a “quantal-3.4-plus-bufferbloat” kernel for precise and quantal. (The new schedulers won’t work on pre-3.3 kernels). The PPA page links to a quick how-to-smoke-test-it guide and more info.
The Bufferbloat group is eager for testing and feedback and general eyeball time from the Ubuntu kernel team and the Ubuntu community. Their channel is #bufferbloat on freenode.
Please give my PPA a whirl, and get a taste of the new cutting-edge network goodness. Any questions about it — I’ll at least know who to direct you to, so feel free to ask me.

BenC:
I had this on the meeting agenda, but don’t see it above.
Trying to get some feedback for the patches I sent to kernel-team@, hoping to get it merged for next kernel upload
Re: PowerPC e500mc
BenC, i think that are being reviewed at the moment arn’t they ?
If so, I’m unaware :)
Also, if there are any suggestions on changes to my workflow for getting powerpc stuff merged, let me know
we are looking at them and seeing if they scare us or not
bjf: The only scary one(s) are the mdio phy changes, but I have tested them extensively on non-ppc
BenC: just got back after 5 days off. they are on my todo list.
Everything else is either nop or segmented on non-ppc
tgardner: thanks
a lot of the patches are sauce, are those also heading upstream ?
All of them have been pushed upstream
2 have been accepted
BenC: I should have some comments by tomorrow. got a huge pile of email to deal with…
Oh wait, not the SAUCE, not yet
freescale had 360+ patches last year, so they’ve done a lot to get this merged upstream
These are the last few, and are being dealt with in the coming months
tgardner: ok, please email, ping me if any questions come up…
will do
Anything else for open discussion?
Thanks everyone

Leann Ogasawara

[Quantal] linux kernel 3.4.0-5.11 uploaded (ABI Bump)

We have uploaded a new Quantal linux kernel. Please note the ABI Bump. The most notable changes are as follows:

* [Config] Disable CONFIG_ARM_LPAE (LP: #1009061)
* b43: do not call ieee80211_unregister_hw if we are not registered (LP: #1008905)
* [Config] omap3: MFD_OMAP_USB_HOST is usb host in omap2+ (LP: #1009061)

The full changelog can be seen at:

https://launchpad.net/ubuntu/+source/linux/3.4.0-5.11

Joseph Salisbury

Kernel Team Meeting Minutes – June 05, 2012

Meeting Minutes

IRC Log of the meeting.

Meeting minutes.

Agenda

20120605 Meeting Agenda


ARM Status

Q/omap4: Ubuntu-3.4.0-201.6 is out, restoring linux-tools package.
Q/master: omap3 support from master branch was restored (boards can boot and i/o works fine). Unfortunately, framebuffer support is still broken (if we compile it in, we got a WARN() dur
ing boot and no output).


Release Metrics and Incoming Bugs

Release metrics and incoming bug data can be reviewed at the following link:

http://people.canonical.com/~kernel/reports/kt-meeting.txt


Milestone Targeted Work Items

If your name is in the above table, please review your Alpha-1 work
items. I’ll retarget any open work items to Alpha-2.

   apw    hardware-q-kernel-config-review    5 work item   
      hardware-q-kernel-delta-review    3 work items   
      hardware-q-kernel-versions-and-flavors    1 work item   
   cking    hardware-q-kernel-delta-review    4 work items   
   cooloney    hardware-q-kernel-config-review    1 work item   
   jjohansen    hardware-q-kernel-config-review    1 work item   
   jk-    hardware-q-kernel-config-review    2 work items   
   ppisati    hardware-q-kernel-config-review    1 work item   
   tgardner    hardware-q-kernel-config-review    2 work items   
   kernel-team    hardware-q-kernel-config-review    3 work items   
      hardware-q-kernel-versions-and-flavors    2 work items   


Status: Quantal Development Kernel

We have recently uploaded the 3.4.0-4.10 Quantal kernel. This most
notable enables the new highbank kernel flavor. We also did extensive
rework to the kernel configs in this upload. We are currently prepping
a last minute upload for fixes to bugs 1008905 and 1009061. After that
we are entering a soft freeze for the Alpha-1 release on Thursday. Only
critical bug fixes for the release will warrant another upload.


Status: CVE’s

== 2012-06-05 (weekly) ==
Currently we have 89 CVEs on our radar, with 1 new CVEs added this week.
See the CVE matrix for the current list:

http://people.canonical.com/~kernel/cve/pkg/ALL-linux.html

Overall the backlog has increased slightly slightly this week:

http://people.canonical.com/~kernel/status/cve-metrics.txt

http://people.canonical.com/~kernel/cve/pkg/CVE-linux.txt


Status: Stable, Security, and Bugfix Kernel Updates – Precise/Oneiric/Natty/Lucid/Hardy

Here is the status for the main kernels, until today (June 05):

  • Hardy – 2.6.24-31.101 – No change this cycle
  • Lucid – 2.6.32-41.90 – Ready for -updates; Single CVE
  • Natty – 2.6.38-15.60 – In -updates: 7 CVEs
  • Oneiric – 3.0.0-21.35 – In Testing; 2 stable upstream releases (approx. 111 commits)
  • Precise – 3.2.0-25.40 – In Testing; 2 stable upstream releases (approx. 271 commits)

    Current opened tracking bugs details:

  • http://people.canonical.com/~kernel/reports/kernel-sru-workflow.html

    For SRUs, SRU report is a good source of information:

  • http://people.canonical.com/~kernel/reports/sru-report.html

    Future stable cadence cycles:

  • https://wiki.ubuntu.com/QuantalQuetzal/ReleaseInterlock


Open Discussion or Questions? Raise your hand to be recognized

No open discussion.

Leann Ogasawara

[Quantal] linux kernel 3.4.0-4.10 uploaded

We have uploaded a new Quantal linux kernel. The only change is as follows:

* Temporarily disable ABI and module checks during build. Resolves FTBS on armel.

The full changelog can be seen at:

https://launchpad.net/ubuntu/+source/linux/3.4.0-4.10

Leann Ogasawara

[Quantal] linux kernel 3.4.0-4.9 uploaded (ABI Bump)

We have uploaded a new Quantal linux kernel. Please note the ABI Bump. The most notable changes are as follows:

* Highbank kernel flavor enabled
* Config cleanup for all flavors

The full changelog can be seen at:

https://launchpad.net/ubuntu/+source/linux/3.4.0-4.9