[Bug 94186] Immediate crash when launching World of Warcraft with RV790

[Bug 94186] Immediate crash when launching World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

            Bug ID: 94186
           Summary: Immediate crash when launching World of Warcraft with
                    RV790
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: rankincj@googlemail.com
        QA Contact: dri-devel@lists.freedesktop.org

Warcraft has suddenly started to crash on launch with git Mesa on my RV790.
Bisection has identified this commit:

61ed09c7ea41e559219c772f18ea00942d54d30a is the first bad commit
commit 61ed09c7ea41e559219c772f18ea00942d54d30a
Author: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Date:   Mon Jan 4 23:56:08 2016 +0100

    gallium/cso: add support for compute shaders

    Changes from v2:
     - removed cso_{save,restore}_compute_shader() functions and the
       compute_shader_saved variable because disabling compute shaders for
       meta ops is not currently needed

However, I'm not sure I trust bisection here because I have built Mesa from
this revision *twice* and while WoW always crashes with one build, it never
crashes with the other?!

WoW's crash dump only implies that Mesa is trying to read from a null pointer;
I can find no useful stack trace.

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[Bug 94186] Immediate crash when launching World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

--- Comment #1 from Chris Rankin <rankincj@googlemail.com> ---
For reference, I shall assume that this is the first "good" commit:

OpenGL core profile version string: 3.3 Mesa 11.2.0-devel (git-fe14110)

These commits have definitely crashed for me at some point:
git-04085af
git-7410c60
git-61ed09c
git-e2a1ec5
git-4360ba0

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[Bug 94186] Immediate crash when launching World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

--- Comment #2 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
Hi,

Thanks for the report, I'll have a look later today.

Are you sure you can't make an useful backtrace?

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[Bug 94186] Immediate crash when launching World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

--- Comment #3 from Chris Rankin <rankincj@googlemail.com> ---
Hi, WoW isn't creating a backtrace, but I've now noticed that glxinfo is
core-dumping for me too! So perhaps this will help?

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x00007ffff236764f in cso_destroy_context (ctx=0x5555558d3960)
    at cso_cache/cso_context.c:343
#2  0x00007ffff2238747 in st_destroy_context_priv (st=0x5555558bbed0)
    at state_tracker/st_context.c:185
#3  0x00007ffff22388f2 in st_destroy_context (st=0x5555558bbed0)
    at state_tracker/st_context.c:460
#4  0x00007ffff233bb8d in dri_destroy_context (cPriv=<optimized out>)
    at dri_context.c:188
#5  0x00007ffff233ad73 in driDestroyContext (pcp=0x55555583aa00)
    at dri_util.c:479
#6  0x00007ffff7bb1b4f in dri2_destroy_context (context=0x555555779540)
    at dri2_glx.c:129
#7  0x00007ffff7b90279 in MakeContextCurrent (dpy=0x555555760010, 
    draw=25165835, read=25165835, gc_user=0x5555558c3c80) at glxcurrent.c:250
#8  0x0000555555558c03 in print_screen_info ()
#9  0x0000555555556f88 in main ()

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[Bug 94186] Crash when launching glxinfo and World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

Chris Rankin <rankincj@googlemail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Immediate crash when        |Crash when launching
                   |launching World of Warcraft |glxinfo and World of
                   |with RV790                  |Warcraft with RV790

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[Bug 94186] Crash when launching glxinfo and World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

Samuel Pitoiset <samuel.pitoiset@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |samuel.pitoiset@gmail.com

--- Comment #4 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
Created attachment 121819
  --> https://bugs.freedesktop.org/attachment.cgi?id=121819&action=edit
fix

Could you please give a shot at the attached patch and tell me if it fixes the
issue?

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[Bug 94186] Crash when launching glxinfo and World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

--- Comment #5 from Chris Rankin <rankincj@googlemail.com> ---
(In reply to Samuel Pitoiset from comment #4)
> Could you please give a shot at the attached patch and tell me if it fixes
> the issue?

Yes, that patch fixes both WoW and glxinfo. Thanks.

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[Bug 94186] Crash when launching glxinfo and World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

--- Comment #6 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
Cool, thanks.

I have sent the fix on mesa-dev. It should be upstream soon.

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[Bug 94186] Crash when launching glxinfo and World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

Samuel Pitoiset <samuel.pitoiset@gmail.com> changed:

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

--- Comment #7 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
Fixed.

commit dfc95ad6d129436a3d2383152583919fb2dde261
Author: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Date:   Thu Feb 18 00:18:29 2016 +0100

    gallium/cso: only enable compute shaders when TGSI is supported

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94186
    Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
    Reviewed-by: Marek Olšák <marek.olsak@amd.com>

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[Bug 94186] Crash when launching glxinfo and World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

Guillaume Horel <guillaume.horel@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |99523


Referenced Bugs:

https://bugs.freedesktop.org/show_bug.cgi?id=99523
[Bug 99523] mouse-dpi-tool reports 0 dpi
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[Bug 94186] Crash when launching glxinfo and World of Warcraft with RV790

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https://bugs.freedesktop.org/show_bug.cgi?id=94186

Guillaume Horel <guillaume.horel@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|99523                       |


Referenced Bugs:

https://bugs.freedesktop.org/show_bug.cgi?id=99523
[Bug 99523] mouse-dpi-tool reports 0 dpi
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