[Bug 109229] glLinkProgram locks up for ~30 seconds

[Bug 109229] glLinkProgram locks up for ~30 seconds

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https://bugs.freedesktop.org/show_bug.cgi?id=109229

            Bug ID: 109229
           Summary: glLinkProgram locks up for ~30 seconds
           Product: Mesa
           Version: 18.3
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: bronsonmathews@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

A recent updated to Manjaro/Arch has caused the Godot Engine to lock up when it
calls glLinkProgram.
This appears to be a Mesa 18.3 bug as the issue has started recently and so has
18.3 been rolled out recently in Manjaro.

Here are URL's to bug reports on the Godot forum that should provide further
information:
https://github.com/godotengine/godot/issues/24362
https://github.com/godotengine/godot/issues/24783
https://github.com/godotengine/godot/issues/24340

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[Bug 109229] glLinkProgram locks up for ~30 seconds

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https://bugs.freedesktop.org/show_bug.cgi?id=109229

--- Comment #1 from Timothy Arceri <t_arceri@yahoo.com.au> ---
Can you try to bisect the commit where things chnages between 18.2 and 18.3?

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[Bug 109229] glLinkProgram locks up for ~30 seconds

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https://bugs.freedesktop.org/show_bug.cgi?id=109229

--- Comment #2 from smt <smtea923@gmail.com> ---
This issue seems to be affecting me too, some people say it's been fixed in
18.2.3/.4 however I'm running 18.3.1 and definitely have the same symptoms in
regards to Godot freezing up, I don't know much so can't be more help, there
seems to be some discussion relating to the issue here though:

https://bugzilla.redhat.com/show_bug.cgi?id=1646888

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[Bug 109229] glLinkProgram locks up for ~30 seconds

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https://bugs.freedesktop.org/show_bug.cgi?id=109229

--- Comment #3 from Timothy Arceri <t_arceri@yahoo.com.au> ---
(In reply to smt from comment #2)
> This issue seems to be affecting me too, some people say it's been fixed in
> 18.2.3/.4 however I'm running 18.3.1 and definitely have the same symptoms
> in regards to Godot freezing up, I don't know much so can't be more help,
> there seems to be some discussion relating to the issue here though:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1646888

Are you sure that is the same bug? That one wasn't a Mesa bug it was a bug in
GCC.

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[Bug 109229] glLinkProgram locks up for ~30 seconds

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https://bugs.freedesktop.org/show_bug.cgi?id=109229

--- Comment #4 from smt <smtea923@gmail.com> ---
(In reply to Timothy Arceri from comment #3)
> (In reply to smt from comment #2)
> > This issue seems to be affecting me too, some people say it's been fixed in
> > 18.2.3/.4 however I'm running 18.3.1 and definitely have the same symptoms
> > in regards to Godot freezing up, I don't know much so can't be more help,
> > there seems to be some discussion relating to the issue here though:
> > 
> > https://bugzilla.redhat.com/show_bug.cgi?id=1646888
> 
> Are you sure that is the same bug? That one wasn't a Mesa bug it was a bug
> in GCC.

uh yeah sorry, I think that might be right, the symptoms are all very similar
and the versions so close it's getting a little confusing for me to figure it
all out to be honest

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[Bug 109229] glLinkProgram locks up for ~30 seconds

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https://bugs.freedesktop.org/show_bug.cgi?id=109229

Timothy Arceri <t_arceri@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #5 from Timothy Arceri <t_arceri@yahoo.com.au> ---
Well I have no idea how to use Godot and couldn't follow the instructions in
the linked bug reports. So can someone attach a sample project here and
instructions to trigger this problem with it? Thanks.

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[Bug 109229] glLinkProgram locks up for ~30 seconds

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https://bugs.freedesktop.org/show_bug.cgi?id=109229

--- Comment #6 from Fabian <supagu@gmail.com> ---
Hi Tim, sorry about the slow reply.

I've added instructions on how to reproduce the problem here:
https://github.com/godotengine/godot/issues/24783#issuecomment-453380560

Download build.zip and it has everything you need in there.


How would I go about bisecting the changes between 18.2 and 18.3 where things
went awry?

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[Bug 109229] glLinkProgram locks up for ~30 seconds

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https://bugs.freedesktop.org/show_bug.cgi?id=109229

--- Comment #7 from smt <smtea923@gmail.com> ---
Created attachment 143144
  --> https://bugs.freedesktop.org/attachment.cgi?id=143144&action=edit
apitrace of godot including glLinkProgram lock up

I don't know how useful this is in this situation and I haven't done it before
now but I've managed to get an apitrace of it happening inside of Godot,
happening around frame 540 or 541 when I enable emission on a material (though
the freeze happens on any shader change if it's changing for the first time on
that build of Godot), hopefully this can help in some way

Just for clarification I am running 18.3.1 on Arch too

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[Bug 109229] glLinkProgram locks up for ~30 seconds

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https://bugs.freedesktop.org/show_bug.cgi?id=109229

Timothy Arceri <t_arceri@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW
          Component|Drivers/Gallium/radeonsi    |glsl-compiler
           Assignee|dri-devel@lists.freedesktop |mesa-dev@lists.freedesktop.
                   |.org                        |org
         QA Contact|dri-devel@lists.freedesktop |intel-3d-bugs@lists.freedes
                   |.org                        |ktop.org

--- Comment #8 from Timothy Arceri <t_arceri@yahoo.com.au> ---
Thanks for the extra info and sorry for delay in looking at this.

Fix sent to the list:

https://patchwork.freedesktop.org/patch/281427/

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