[Bug 99292] GPU hang in High Fidelity

[Bug 99292] GPU hang in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99292

            Bug ID: 99292
           Summary: GPU hang in High Fidelity
           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: haagch@frickel.club
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 128789
  --> https://bugs.freedesktop.org/attachment.cgi?id=128789&action=edit
dmesg

RX 480 with llvm 4.0.0svn_r291124, mesa git, Linux 4.10-rc2

It works for some time, but randomly clicking through the UI with the address
bar hangs the GPU.

Here is an apitrace (18 Megabyte):
https://haagch.frickel.club/files/interface.trace.xz

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[Bug 99292] GPU hang in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99292

--- Comment #1 from smoki <smoki00790@gmail.com> ---

 This is same trace like in closed bug 99191 that no driver could run normaly.

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[Bug 99292] GPU hang in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99292

--- Comment #2 from Christoph Haag <haagch@frickel.club> ---
Oops, it has the same name, so I overwrote the other one. It really should be a
new trace though.

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[Bug 99292] GPU hang in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99292

--- Comment #3 from Samuel Pitoiset <samuel.pitoiset@gmail.com> ---
Confirmed, I can reproduce the hang on my rx 480 with latest mesa/llvm.

It hangs at draw call 680247, looks like an infinite loop in the fragment
shader.

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[Bug 99292] GPU hang in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99292

--- Comment #4 from Christoph Haag <haagch@frickel.club> ---
Someone said that with mesa with --enable-debug it runs in an assert before the
gpu hang happens, so I tried it to add it to the bug report, but this did not
happen for me. I get no assert and the GPU still hangs with --enable-debug.

Just an idea, since High Fidelity has had the other known application side
rendering bug, it's possible there is a buggy shader that the compiler doesn't
catch.

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[Bug 99292] GPU hang in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99292

--- Comment #5 from Christoph Haag <haagch@frickel.club> ---
I don't know if it's still the same problem but now it always happens *very*
quickly after starting the app. Here's a fresh api trace:
https://haagch.frickel.club/files/interface-2.trace.xz

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[Bug 99292] GPU hang in High Fidelity

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https://bugs.freedesktop.org/show_bug.cgi?id=99292

Christoph Haag <haagch@frickel.club> changed:

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

--- Comment #6 from Christoph Haag <haagch@frickel.club> ---
Just tried it again and it does not hang the GPU now.

They changed the starting environment to another one and had many commits since
I last tried, so could be the driver or the app who fixed it.

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