[Bug 65193] New: [bisected] r600g, can't launch Gnome Shell and KDE since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

[Bug 65193] New: [bisected] r600g, can't launch Gnome Shell and KDE since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

          Priority: medium
            Bug ID: 65193
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [bisected] r600g, can't launch Gnome Shell and KDE
                    since mesa updated to
                    5de41575a127eb8a6a0fe5c71a73b372f9b89f53
          Severity: critical
    Classification: Unclassified
                OS: All
          Reporter: alexandre.f.demers@gmail.com
          Hardware: All
            Status: NEW
           Version: git
         Component: Drivers/Gallium/r600
           Product: Mesa

I haven't been able to log in Gnome Shell or KDE lately since I updated mesa
from git. Using XFCE and doing some tests, I've found out glxgears returns an
assertion error when launch. glxgears fails with the following error:
sb/sb_expr.cpp:455:fold_alu_op2: Assertion `v0 && v1 && n.dst[0]' failed.
line 6: 15521 Trace/breakpoint trap   (core dumped) $1

Bisecting ended up point to culprit commit:
commit 5de41575a127eb8a6a0fe5c71a73b372f9b89f53
Author: Vadim Girlin <vadimgirlin@gmail.com>
Date:   Mon May 27 14:23:47 2013 +0400

    r600g/sb: improve folding for SETcc

    Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>

:040000 040000 96a6fd8851d84f62896ecfba6c4a7df5a7963325
ade9a1e6d7fd56ed8cf413a2138c38011f1b9827 M    src


Using latest drm, ddx from git on a Radeon HD6950 Cayman.

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[Bug 65193] [bisected] r600g, can't launch glxgears since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[bisected] r600g, can't     |[bisected] r600g, can't
                   |launch Gnome Shell and KDE  |launch glxgears since mesa
                   |since mesa updated to       |updated to
                   |5de41575a127eb8a6a0fe5c71a7 |5de41575a127eb8a6a0fe5c71a7
                   |3b372f9b89f53               |3b372f9b89f53

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[Bug 65193] [bisected] r600g, can't launch glxgears since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

--- Comment #1 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
It seems the identified failed assertion is not the prime root of Gnome Shell
and KDE not launching. A previous commit must be the culprit for the other
problem (I'm tracking it down right now). However, commit
5de41575a127eb8a6a0fe5c71a73b372f9b89f53 does prevent glxgears from running as
it should.

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[Bug 65193] [bisected] r600g, can't launch glxgears since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

--- Comment #2 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #1)
> It seems the identified failed assertion is not the prime root of Gnome
> Shell and KDE not launching. A previous commit must be the culprit for the
> other problem (I'm tracking it down right now). However, commit
> 5de41575a127eb8a6a0fe5c71a73b372f9b89f53 does prevent glxgears from running
> as it should.

Forget about what I just said, I made a mistake, wrongly resync before last
build. Retesting right away.

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[Bug 65193] [bisected] r600g, can't launch Gnome Shell and KDE since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[bisected] r600g, can't     |[bisected] r600g, can't
                   |launch glxgears since mesa  |launch Gnome Shell and KDE
                   |updated to                  |since mesa updated to
                   |5de41575a127eb8a6a0fe5c71a7 |5de41575a127eb8a6a0fe5c71a7
                   |3b372f9b89f53               |3b372f9b89f53

--- Comment #3 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
commit 5de41575a127eb8a6a0fe5c71a73b372f9b89f53 is really the first bad commit
preventing Gnome Shell and KDE from starting correctly (Gnome ends with a Oops
and KDE just fails and relaunches X).

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[Bug 65193] [bisected] r600g, can't launch Gnome Shell and KDE since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

Andreas Boll <andreas.boll.dev@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ptpzz@yandex.ru

--- Comment #4 from Andreas Boll <andreas.boll.dev@gmail.com> ---
Are you using the default backend + sb or llvm backend + sb?

Ccing vadimg.

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[Bug 65193] [bisected] r600g, can't launch Gnome Shell and KDE since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

--- Comment #5 from Vadim Girlin <ptpzz@yandex.ru> ---
Created attachment 80097
  --> https://bugs.freedesktop.org/attachment.cgi?id=80097&action=edit
[PATCH] r600g/sb: fix broken assert

Attached patch should fix the assert. Does it fix you issues?

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[Bug 65193] [bisected] r600g, can't launch Gnome Shell and KDE since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

--- Comment #6 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #4)
> Are you using the default backend + sb or llvm backend + sb?
> 
> Ccing vadimg.

R600_DEBUG=sb is set.

In my build script, I set the following:
baseExec="./autogen.sh --prefix=/usr \
        --enable-debug \
        --enable-osmesa \
        --enable-gbm \
        --enable-xvmc \
        --enable-vdpau \
        --enable-gles1 \
        --enable-gles2 \
        --enable-openvg \
        --enable-xorg \
        --enable-xa \
        --enable-egl \
        --enable-gallium-egl \
        --enable-glx-tls \
        --enable-texture-float \
        --enable-wgl \
        --with-gallium-drivers=r600,swrast,svga \
        --with-dri-drivers= \
        --with-egl-platforms=x11,drm,wayland"

So that would be default + SB, right?

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[Bug 65193] [bisected] r600g, can't launch Gnome Shell and KDE since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

--- Comment #7 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #5)
> Created attachment 80097 [details] [review]
> [PATCH] r600g/sb: fix broken assert
> 
> Attached patch should fix the assert. Does it fix you issues?

Yes, it does.

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[Bug 65193] [bisected] r600g, can't launch Gnome Shell and KDE since mesa updated to 5de41575a127eb8a6a0fe5c71a73b372f9b89f53

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https://bugs.freedesktop.org/show_bug.cgi?id=65193

Vadim Girlin <ptpzz@yandex.ru> changed:

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

--- Comment #8 from Vadim Girlin <ptpzz@yandex.ru> ---
Patch pushed with commit eb4c992ea5e69083d2bc705d2460ce956c5063a7

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