GLVND: AARCH64 : Fix address passed to clear cache

Bug #1816004 reported by Sai Kiran Korwar on 2019-02-15
This bug affects 2 people
Affects Status Importance Assigned to Milestone
libglvnd (Ubuntu)
Timo Aaltonen
Timo Aaltonen

Bug Description


A new fix has been merged to NVIDIA libglvnd repo at
We need to include it in bionic.
It would be ok to just include this fix even without updating to the latest glvnd version.

This change fixes a crash seen in some GLX apps while calling glXGetProcAddress.

Source Package :

Can we get this fix merged in current LTS 18.04 as "-updates"

[Test app]

To reproduce this failure: Install python-pyglet on 18.04 ubuntu.
And run a small test app with this piece of code.
void *handle = dlopen("", 2);
glXGetProcAddressARB = (GLXextFuncPtr (*)(const GLubyte*))dlsym(handle, "glXGetProcAddressARB");

[Regression potential]

Minimal, disco shipped with the fix.

affects: vulkan (Ubuntu) → libglvnd (Ubuntu)
description: updated
Timo Aaltonen (tjaalton) on 2019-02-15
Changed in libglvnd (Ubuntu):
assignee: nobody → Timo Aaltonen (tjaalton)
Timo Aaltonen (tjaalton) wrote :

would be nice to get a new upstream release, since this commit isn't in a tagged release

Kyle Brenneman (kyle-brenneman) wrote :

I just tagged a 1.1.1 release for libglvnd with the AARCH64 and PPC64LE fixes:

If you're switching from 1.0.0, note that the dispatch table order changed between v1.0.0 and v1.1.0, so you'll need matching builds of,,, and the libGLES*.so libraries.

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in libglvnd (Ubuntu):
status: New → Confirmed
Sai Kiran Korwar (skirank) wrote :

Hi Timo,

I am hoping we can get the latest v1.1.1 release in Cosmic Cuttlefish and Disco Dingo as well.
Could you help update?

Timo Aaltonen (tjaalton) wrote :

disco will, it's on the queue and should be accepted after beta freeze is over

Launchpad Janitor (janitor) wrote :

This bug was fixed in the package libglvnd - 1.1.1-0ubuntu1

libglvnd (1.1.1-0ubuntu1) disco; urgency=medium

  * New upstream release. (LP: #1816004)

 -- Timo Aaltonen <email address hidden> Wed, 13 Mar 2019 20:05:49 +0200

Changed in libglvnd (Ubuntu):
status: Confirmed → Fix Released
Sai Kiran Korwar (skirank) wrote :

Thanks Timo.

Can you confirm if this will be available with bionic as well?

Sai Kiran Korwar (skirank) wrote :


Can you give an update about the inclusion of this fix in bionic?
We still need this in bionic.

Timo Aaltonen (tjaalton) wrote :

depends on the nature of the backport, I'll ask if we can just update straight to 1.1.1

Changed in libglvnd (Ubuntu Bionic):
assignee: nobody → Timo Aaltonen (tjaalton)
Sai Kiran Korwar (skirank) wrote :

Updating to v1.1.1 would be best. Thanks.

Sai Kiran Korwar (skirank) wrote :

Any update here? Thanks!

Timo Aaltonen (tjaalton) wrote :

uploaded to bionic-proposed queue, with just the fix added

Changed in libglvnd (Ubuntu Bionic):
status: New → In Progress
description: updated
description: updated
Alka Mohite (amohite) wrote :

Is there an update on the inclusion of the fix in bionic-update?

Timo Aaltonen (tjaalton) wrote :

somehow the upload didn't end up in the queue earlier, but is there now..

Hello Sai, or anyone else affected,

Accepted libglvnd into bionic-proposed. The package will build now and be available at in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See for documentation on 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 add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-bionic to verification-done-bionic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-bionic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Changed in libglvnd (Ubuntu Bionic):
status: In Progress → Fix Committed
tags: added: verification-needed verification-needed-bionic
Sai Kiran Korwar (skirank) wrote :

I have verified that the libglvnd package libglvnd-1.0.0-2ubuntu2.3 fixes the bug for me.
Added the verification-done-bionic tag.

Thanks for including this fix.

tags: added: verification-done-bionic
removed: verification-needed verification-needed-bionic
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package libglvnd - 1.0.0-2ubuntu2.3

libglvnd (1.0.0-2ubuntu2.3) bionic; urgency=medium

  * aarch64-fix-address-passed-to-clear-cache.diff: Fix a crash in some
    GLX apps. (LP: #1816004)

 -- Timo Aaltonen <email address hidden> Fri, 10 May 2019 15:17:37 +0300

Changed in libglvnd (Ubuntu Bionic):
status: Fix Committed → Fix Released

The verification of the Stable Release Update for libglvnd 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 regressions.

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