[Bug 82186] New: BARTS GPU lockup with minecraft shaders

[Bug 82186] New: BARTS GPU lockup with minecraft shaders

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

          Priority: medium
            Bug ID: 82186
          Assignee: dri-devel@lists.freedesktop.org
           Summary: BARTS GPU lockup with minecraft shaders
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: EoD@xmw.de
          Hardware: Other
            Status: NEW
           Version: 10.2
         Component: Drivers/Gallium/r600
           Product: Mesa

Created attachment 104066
  --> https://bugs.freedesktop.org/attachment.cgi?id=104066&action=edit
glxinfo

When I enable the shader modpack in minecraft my computer locks up: keyboard
does not react and screen has dark/light gray stripes.

You need to install forge and those two mods in order to reproduce the bug:
http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1286604-shaders-mod-v2-3-18-updated-by-karyonix
http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1280299-sonic-ethers-unbelievable-shaders-v10-1

I tried it without DPM, without HyperZ and without both, but the lockup didn't
change.

I am using Gentoo:
- with kernel 3.14.14 and mesa 10.2.4, the screen started flickering (on/off,
on+black/on) and locked up eventually.
- with kernel 3.14.15 and mesa 10.2.5 it immediately locks up and leaves me
with gray stripes.

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

EoD <EoD@xmw.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|BARTS GPU lockup with       |[r600g] BARTS GPU lockup
                   |minecraft shaders           |with minecraft shaders

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

--- Comment #1 from EoD <EoD@xmw.de> ---
I tried it again with current mesa git master
(ae95b9dd9be56ad84a8a4ab5955f580c337259cb) together with libdrm git master
(07fead4462b2d537d0c3cae69a09272fc426c598) and I am being spammed with the
following messages before the computer locks up:

localhost kernel: [ 2991.517056] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517169] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517189] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517249] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517271] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517374] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517394] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517438] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517458] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517537] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517558] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517651] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517677] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517778] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517799] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517844] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517863] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517955] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.517976] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518018] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518037] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518153] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518175] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518221] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518253] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518354] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518376] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518420] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518443] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518520] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518541] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518620] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518639] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518718] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518739] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518782] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518801] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518931] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518952] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.518995] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.519013] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.519090] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit
localhost kernel: [ 2991.519109] radeon_gem_object_create:62 alloc size 341Mb
bigger than 256Mb limit

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

--- Comment #2 from EoD <EoD@xmw.de> ---
Created attachment 104555
  --> https://bugs.freedesktop.org/attachment.cgi?id=104555&action=edit
dmesg with kernel 3.14.16, mesa 10.2.4 and libdrm 2.4.54

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

--- Comment #3 from EoD <EoD@xmw.de> ---
Mesa 10.2.4 with kernel 3.16.0 and 3.15.9 give about the same errors as the
dmesg file attached.

Unfortunately I cannot test current mesa git
(52901ec2615761390f5ef97b11516dae330d27d1) as there are some runtime linking
problems on my system.

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

EoD <EoD@xmw.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #104555|0                           |1
        is obsolete|                            |

--- Comment #4 from EoD <EoD@xmw.de> ---
Created attachment 104572
  --> https://bugs.freedesktop.org/attachment.cgi?id=104572&action=edit
syslog with kernel 3.16.0, mesa 10.2.4 and libdrm master

A shorter log during the crash

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

--- Comment #5 from MWATTT <megwattt@gmail.com> ---
I've got this bug too.
I've bisected and found that most shaders packs starts to hang at commit
7e414b58640aee6e243d337e72cea290c354f632
"glsl: break the gl_FragData array into separate gl_FragData[i] variables"
However, one of them starts to hang with an earlier commit:
edbbfac6cfc634e697d7f981155a5072c52d77ac
"r600g: fast color clears for single-sample buffers"

This only happens on evergreen+ hardware(tested on JUNIPER and THAMES, works
fine on RV770).

A workaround is to set the environment variable R600_DEBUG=notiling.

This bug also happens in various Unreal Engine 4 demos. (tested on Reflections
Subway Demo, where the hang happens at the beginning). The environment variable
also solves the problem.

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |greg@chown.ath.cx

--- Comment #6 from Michel Dänzer <michel@daenzer.net> ---
(In reply to MWATTT from comment #5)
> However, one of them starts to hang with an earlier commit:
> edbbfac6cfc634e697d7f981155a5072c52d77ac
> "r600g: fast color clears for single-sample buffers"
> 
> This only happens on evergreen+ hardware(tested on JUNIPER and THAMES, works
> fine on RV770).
> 
> A workaround is to set the environment variable R600_DEBUG=notiling.

Fast clears only work with tiled surfaces, so R600_DEBUG=notiling makes the
commit above ineffective. Adding the author of that commit to CC.

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

--- Comment #7 from Alex Deucher <alexdeucher@gmail.com> ---
possibly related bug 73528.

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

--- Comment #8 from EoD <EoD@xmw.de> ---
Mesa 10.3.1:
I can confirm that minecraft+shaders with R600_DEBUG=notiling does not lock up
my system, although there a plenty of errors like:

EE r600_shader.c:157 r600_pipe_shader_create - translation from TGSI failed !
EE r600_state_common.c:751 r600_shader_select - Failed to build shader variant
(type=1) -1


Without R600_DEBUG=notiling, behaviour hasn't changed.

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

--- Comment #9 from MirceaKitsune <sonichedgehog_hyperblast00@yahoo.com> ---
Argh, I wish I could have found this report earlier! I discovered it by doing a
Google search on commit edbbfac6cfc634e697d7f981155a5072c52d77ac which
introduced the exact same lockup for my video card. I've been maintaining the
following report for years now, about the same bug apparently:

https://bugs.freedesktop.org/show_bug.cgi?id=73528

So from what I understand, setting R600_DEBUG=notiling should prevent
fast-clear from freezing the GPU? I will gladly try this for Second Life and
other programs that trigger the problem, and see if there are any changes.

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

--- Comment #10 from MirceaKitsune <sonichedgehog_hyperblast00@yahoo.com> ---
Alright, I finished testing the 3 problematic games which this bug affected for
me, to see how they behave with R600_DEBUG=notiling enabled. I don't use
shaders for MineCraft so I can't test them specifically, although we're
obviously talking about the same issue so this is still relevant. My results
are:

Second Life: No more GPU freeze when Advanced Lighting is enabled! This was one
of the most immediate triggers for the issue in my case, and in most scenarios
it immediately brought down the X server... now there is not a single hiccup.

Stunt Rally: No more freezes when enabling shaders! In its case however the
problem is more probabilistic, so this isn't 100% guaranteed.

One Late Night: The crash still exists, even with notiling. So there are still
cases where this variable does not solve the problem, although in most engines
it does and I'm happy enough with that for the time being.

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[Bug 82186] [r600g] BARTS GPU lockup with minecraft shaders

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https://bugs.freedesktop.org/show_bug.cgi?id=82186

Marek Olšák <maraeo@gmail.com> changed:

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

--- Comment #11 from Marek Olšák <maraeo@gmail.com> ---


*** This bug has been marked as a duplicate of bug 73528 ***

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