Update Precise to mesa 8.0.4 (bugfix micro-release)

Hello Bryce, or anyone else affected,

Accepted mesa into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/mesa/8.0.4-0ubuntu0.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please change the bug tag from verification-needed to verification-done. If it does not, change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Everything seem to run smoothly one old Intel GM965 (GMA X3100) machine, Sandy-Bridge machine and Radeon HD 4670 machine. Not sure if more piglit results were wanted for verification-done, but I let the old machine run piglit tests on 8.0.2 vs 8.0.4:

http://people.canonical.com/~tjyrinki/mesa/802-804/compare/

Do note though that I needed to kill a couple of tests on both that seemed to either take literally forever (not even hours enough) or didn't seem to do anything. Also 8.0.2 was run on Unity while 8.0.4 on metacity while trying to preserve the 2GB RAM which seemed to swap completely over in some texture test. Nevertheless, the results look pretty good with amount of passed tests going from 6430 to 6437 with two theoretical regressions (not sure if I could reproduce those but running the tests takes all day) and one warning that was probably caused by metacity.

Thanks; I've also done testing on intel and nouveau but haven't studied the results yet. Working on getting an -ati system to run the tests on as well.

On Intel, yes there are a couple spots where the test hangs so you have to give it a ^C to continue. On my nouveau box, under 8.0.2 I triggered a kernel OOPS (#1047710); under 8.0.4 it GPU locked instead (still bad, but less bad than an OOPS!)

Theoretically if not for those problems the tests should take about 2 hrs to run.

The -ati box has turned out to be DOA due to a bad motherboard, so I've been unsuccessful getting tests on that.

However, I've posted the nouveau and intel tests here:

  http://people.canonical.com/~bryce/mesa804-piglit/

Note this set of runs uses a newer piglit checkout than my previous runs against mesa 8.0.3.

The Intel results look good, with a number of passed tests increasing by +10 from 6463/6618 to 6473/6618. However, note that there are four tests which regress (see at http://people.canonical.com/~bryce/mesa804-piglit/intel/regressions.html). I'm not certain what to make of that, it's not clear why they failed. Maybe these are unimportant, but I'll follow up on them.

The nouveau results look even better, at +705 passing from 478 to 1183, however note that the low initial number is due to one of the earlier tests triggering a kernel oops (bug #1047710); with the newer mesa, that bug doesn't get tripped but a later test trips a GPU lockup (bug #1050035). So we can say that mesa 8.0.4 improves things significantly, but bugs remain.

There is currently an open CVE on 12.04 that the security team hopes to address soon. Specifically:
http://people.canonical.com/~ubuntu-security/cve/2012/CVE-2012-2864.html

I looked at the diff for this -proposed update and it does not contain the identified fix for the issue:
http://cgit.freedesktop.org/mesa/mesa/commit/src/glsl/link_uniforms.cpp?id=ff996cafce511dd8a6c4e066e409c23e147a670c

Can someone verify and reupload to -proposed with this fix? Thanks!

<ScottK> mdeslaur: Would it make sense to copy the mesa in precise-proposed to -updates and you base off of that? Except for your comment about the security issue, it's otherwise ready to release.
<mdeslaur> ScottK: huh? bryce said there are issues with the package in -proposed
<ScottK> Hmm.
<ScottK> All the bugs are marked verified.
<mdeslaur> ScottK: well, if that's the case, it should get pushed to -updates
<ScottK> bryce: Should I remove mesa from precise-proposed so it doesn't get released by accident?
-*- ScottK waits for bryce.
<bryce> ScottK, there are no known user issues. The problem is that a couple test cases changed behavior. According to Intel those are test suite issues not indications of user affecting problems
<ScottK> So you'd recommend to release it?
<bryce> ScottK, I'd have no problem releasing it. It works fine on the hardware, aside from the piglit irregularities (which would be hard to track down)

The verification of this Stable Release Update has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.

This bug was fixed in the package mesa - 8.0.4-0ubuntu0.1

---------------
mesa (8.0.4-0ubuntu0.1) precise-proposed; urgency=low

  * New upstream stable release. (LP: #1019444)
    + Fixes crash in intel_miptree_release()
      (LP: #952896)
    + Fixes slow WebGL in firefox
      (LP: #988343)

  [ Robert Hooker ]
  * Drop 118_fix_rendering_from_textures.patch and
    117_intel_fix_hiz_null_dereference.patch, both included upstream.
  * Refresh patches.

  [ Bryce Harrington ]
  * Add 117_nullptr_check_in_query_version.patch: Fix null pointer
    deref in QueryVersion() during login.
    (LP: #968284)
  * Add 118_glsl_initialize_samplers.patch: Initialize samplers to 0, as
    required by the spec. Fixes rendering corruption in MapsGL labels.
    Cherrypick from mesa master.
    (LP: #981883)
 -- Bryce Harrington <email address hidden> Fri, 07 Sep 2012 13:59:12 -0700