[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

            Bug ID: 93360
           Summary: [radeonsi/llvm] Segfault in CS:GO
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: tdroste@gmx.de
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 120470
  --> https://bugs.freedesktop.org/attachment.cgi?id=120470&action=edit
Backtrace of the segfault

When loading of a level is done in CS:GO and the team selection menu should pop
up CS:GO segfaults here:

#0  0xf4f2cd2d in llvm::LiveRange::find(llvm::SlotIndex) () from
/usr/local/lib/dri/radeonsi_dri.so

Hardware:
Hawaii PRO [Radeon R9 290]

This happens with most recent LLVM SVN and Mesa git, and also with LLVM and
Mesa from October. So this seems to be some long standing error in either Mesa
or LLVM that is triggered now by a change of CS:GO.

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

Tobias Droste <tdroste@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=92944

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

--- Comment #1 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Hi Tobias, thanks for the new report. As with bug #92944, could you please
provide a log with R600_DEBUG=vs,gs,ps? This will show the segfaulting shader
and should allow simple reproduction at least.

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

--- Comment #2 from Tobias Droste <tdroste@gmx.de> ---
Created attachment 120476
  --> https://bugs.freedesktop.org/attachment.cgi?id=120476&action=edit
Output of R600_DEBUG=vs,gs,ps

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

sarnex <commendsarnex@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |commendsarnex@gmail.com

--- Comment #3 from sarnex <commendsarnex@gmail.com> ---
Created attachment 120488
  --> https://bugs.freedesktop.org/attachment.cgi?id=120488&action=edit
R600_DEBUG=vs,gs,ps

Hello. I have the exact same issue. The assert in LLVM is llvm::IndexListEntry*
llvm::SlotIndex::listEntry() const: Assertion `isValid() && "Attempt to compare
reserved index."' failed.

I've attached my R600_DEBUG=vs,gs,ps also. I have a HD 7950/Tahiti.

I hope this helps.

Thanks,
sarnex

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

--- Comment #4 from Tobias Droste <tdroste@gmx.de> ---
I found out why the last CS update caused this issue.
They siwtched all graphic options to "auto" with the last update and for my
graphics card it figured out that the highest preference in every setting
should be the best ones. And with these settings CS:GO is crashing.

I switched backed everything to "low" and I can at least play the game again.
But the driver should crash with everything set to high.

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

--- Comment #5 from Tobias Droste <tdroste@gmx.de> ---
(In reply to Tobias Droste from comment #4)
> I found out why the last CS update caused this issue.
> They siwtched all graphic options to "auto" with the last update and for my
> graphics card it figured out that the highest preference in every setting
> should be the best ones. And with these settings CS:GO is crashing.
> 
> I switched backed everything to "low" and I can at least play the game
> again. But the driver should crash with everything set to high.

"should *not* crash" of course :-)

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

--- Comment #6 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Thank you for posting the workaround!

I can confirm that the logs of both of you contain (different) shaders that
crash with standalone llc, making this bug easy to reproduce at least.

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

--- Comment #7 from Tobias Droste <tdroste@gmx.de> ---
Because bug 92944 was magically fixed I just tested again with everything set
to high and it looks like this is not crashing anymore. This was with LLVM svn
trunk and mesa git from 2 days ago.

Though the image looks wrong with everything set to high. The lighting is
doesn't seem to be rendered correctly. 

Sarnex is it working for you?

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

--- Comment #8 from sarnex <commendsarnex@gmail.com> ---
(In reply to Tobias Droste from comment #7)
> Because bug 92944 was magically fixed I just tested again with everything
> set to high and it looks like this is not crashing anymore. This was with
> LLVM svn trunk and mesa git from 2 days ago.
> 
> Though the image looks wrong with everything set to high. The lighting is
> doesn't seem to be rendered correctly. 
> 
> Sarnex is it working for you?

Hi Tobias,

Yeah, it seems to be working for me also. I guess the underlying bug was fixed.
Great works guys at AMD.

Thanks,
sarnex

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[Bug 93360] [radeonsi/llvm] Segfault in CS:GO

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https://bugs.freedesktop.org/show_bug.cgi?id=93360

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

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