[Bug 40767] New: [r600g] This commit is crashing World of Warcraft at start-up

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bugzilla-daemon＠freedesktop.org

11 Sep 2011 11 Sep '11

12:17 a.m.

https://bugs.freedesktop.org/show_bug.cgi?id=40767

Summary: [r600g] This commit is crashing World of Warcraft at start-up Product: Mesa Version: git Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: major Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: rankincj@googlemail.com

I've noticed that World of Warcraft has started crashing with my HD4890, although not with my RV350. (WoW complains about reading invalid memory). I've run several git bisects, and they have all indicated that the first bad commit is:

commit b94a926f396d366b6bb5d24b32dd93ffb7609205 Author: Brian Paul brianp@vmware.com Date: Fri Sep 9 08:06:29 2011 -0600

st/mesa: init program MaxLocalParams, MaxEnvParams limits

Use the same limit for all parameter classes.

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bugzilla-daemon＠freedesktop.org

11 Sep 11 Sep

6:36 a.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #1 from Marek Olšák maraeo@gmail.com 2011-09-10 23:36:35 PDT --- Could you attach the backtrace where the crash occurs?

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bugzilla-daemon＠freedesktop.org

12:56 p.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #2 from Chris Rankin rankincj@googlemail.com 2011-09-11 05:56:45 PDT --- Created an attachment (id=51051) --> (https://bugs.freedesktop.org/attachment.cgi?id=51051) WoW crash dump file (text)

This is WoW's own crash file, and so probably contains far more information than you need. But it does also contain a stack trace mentioning vbo_exec_DrawRangeElements().

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bugzilla-daemon＠freedesktop.org

1:28 p.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #3 from Marek Olšák maraeo@gmail.com 2011-09-11 06:28:03 PDT --- The backtrace doesn't show the exact line where it crashes. Can you make an apitrace record?

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bugzilla-daemon＠freedesktop.org

1:33 p.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #4 from Marek Olšák maraeo@gmail.com 2011-09-11 06:33:55 PDT --- Created an attachment (id=51052) View: https://bugs.freedesktop.org/attachment.cgi?id=51052 Review: https://bugs.freedesktop.org/review?bug=40767&attachment=51052

possible fix

Can you try this patch?

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bugzilla-daemon＠freedesktop.org

2:04 p.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #5 from Marek Olšák maraeo@gmail.com 2011-09-11 07:04:44 PDT --- Ignore that patch, it breaks everything.

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bugzilla-daemon＠freedesktop.org

4:16 p.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #6 from Chris Rankin rankincj@googlemail.com 2011-09-11 09:16:17 PDT --- (In reply to comment #3)

...

The backtrace doesn't show the exact line where it crashes. Can you make an apitrace record?

Dunno, what's an "apitrace record" :-)? It's probably easier to add fprintf() statements to _mesa_update_state_locked() and examine the carnage...

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bugzilla-daemon＠freedesktop.org

4:23 p.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #7 from Marek Olšák maraeo@gmail.com 2011-09-11 09:23:41 PDT --- Apitrace can record and replay OpenGL commands. You can get it here: https://github.com/apitrace/apitrace

There is more info in this blogpost: http://zrusin.blogspot.com/2011/04/apitrace.html

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bugzilla-daemon＠freedesktop.org

10:55 p.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #8 from Chris Rankin rankincj@googlemail.com 2011-09-11 15:55:58 PDT --- (In reply to comment #6)

...

It's probably easier to add fprintf() statements to _mesa_update_state_locked() and examine the carnage...

My crude debugging has revealed that the following line in update_program_enables() is reading invalid memory:

ctx->FragmentProgram._Enabled = ctx->FragmentProgram.Enabled && ctx->FragmentProgram.Current->Base.Instructions;

It looks like ctx->FragmentProgram.Current is pointing to somewhere strange.

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bugzilla-daemon＠freedesktop.org

12 Sep 12 Sep

9:52 a.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #9 from Chris Rankin rankincj@googlemail.com 2011-09-12 02:52:19 PDT --- (In reply to comment #7)

...

Apitrace can record and replay OpenGL commands. You can get it here: https://github.com/apitrace/apitrace

There is more info in this blogpost: http://zrusin.blogspot.com/2011/04/apitrace.html

Hmm, got any hints for how to apitrace a 32 bit executable running on a 64 bit machine under Wine, please? I've already guessed that I need a 32 bit glxtrace.so, but it's still crashing as it tries to trace wine-preloader.

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bugzilla-daemon＠freedesktop.org

10:50 a.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #10 from Marek Olšák maraeo@gmail.com 2011-09-12 03:50:12 PDT --- Created an attachment (id=51066) View: https://bugs.freedesktop.org/attachment.cgi?id=51066 Review: https://bugs.freedesktop.org/review?bug=40767&attachment=51066

possible fix 2

Can you try this patch?

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bugzilla-daemon＠freedesktop.org

11:35 a.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #11 from Chris Rankin rankincj@googlemail.com 2011-09-12 04:35:39 PDT --- (In reply to comment #10)

...

Can you try this patch?

Yes, that patch seems to work. I've tried printing out the values of pc->MaxParameters, MAX_PROGRAM_LOCAL_PARAMS and MAX_PROGRAM_ENV_PARAMS, and I'm seeing lines like these:

pc->MaxParameters=4096, MAX_LOCAL=4096, MAX_ENV=256 pc->MaxParameters=96, MAX_LOCAL=4096, MAX_ENV=256

I'm guessing the first example is likely to be causing problems.

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bugzilla-daemon＠freedesktop.org

2:57 p.m.

New subject: [Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

https://bugs.freedesktop.org/show_bug.cgi?id=40767

Marek Olšák maraeo@gmail.com changed:

--- Comment #12 from Marek Olšák maraeo@gmail.com 2011-09-12 07:57:51 PDT --- I pushed the patch. Closing.

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bugzilla-daemon＠freedesktop.org