[Bug 97643] Shader crashes radeon driver and brings the whole system down

[Bug 97643] Shader crashes radeon driver and brings the whole system down

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https://bugs.freedesktop.org/show_bug.cgi?id=97643

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Mesa core                   |Drivers/Gallium/radeonsi
         QA Contact|mesa-dev@lists.freedesktop. |dri-devel@lists.freedesktop
                   |org                         |.org
           Assignee|mesa-dev@lists.freedesktop. |dri-devel@lists.freedesktop
                   |org                         |.org

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[Bug 97643] Shader crashes radeon driver and brings the whole system down

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https://bugs.freedesktop.org/show_bug.cgi?id=97643

--- Comment #5 from smoki <smoki00790@gmail.com> ---

 You can try both mesa and llvm from git, as that is what Iaroslav probably
using.

 12.0.1 mesa and llvm 3.8-rc2 does not sound current, even for stable mesa/llvm
branches.

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[Bug 97643] Shader crashes radeon driver and brings the whole system down

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https://bugs.freedesktop.org/show_bug.cgi?id=97643

--- Comment #6 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Cris, do please try with more recent Mesa + LLVM as well.

If that still crashes, can you provide a backtrace of where mpv crashes? dmesg
output from the crash could also give some context.

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[Bug 97643] Shader crashes radeon driver and brings the whole system down

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https://bugs.freedesktop.org/show_bug.cgi?id=97643

Cris <cristiano04@gmail.com> changed:

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

--- Comment #7 from Cris <cristiano04@gmail.com> ---
(In reply to Nicolai Hähnle from comment #6)
> Cris, do please try with more recent Mesa + LLVM as well.
> 
> If that still crashes, can you provide a backtrace of where mpv crashes?
> dmesg output from the crash could also give some context.

I did, I upgraded to llvm-3.9.0 and mesa-git, and the issue went away. Most
conservative distros might have a hard time though.

Thanks anyway.

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[Bug 97643] Shader crashes radeon driver and brings the whole system down

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https://bugs.freedesktop.org/show_bug.cgi?id=97643

--- Comment #8 from almos <aaalmosss@gmail.com> ---
(In reply to Cris from comment #7)
> (In reply to Nicolai Hähnle from comment #6)
> > Cris, do please try with more recent Mesa + LLVM as well.
> > 
> > If that still crashes, can you provide a backtrace of where mpv crashes?
> > dmesg output from the crash could also give some context.
> 
> I did, I upgraded to llvm-3.9.0 and mesa-git, and the issue went away. Most
> conservative distros might have a hard time though.
> 
> Thanks anyway.

Doesn't that mean that a userspace code can crash the kernel, but the most
recent version of that code doesn't do it? Ideally, the kernel should be more
resilient than that IMHO.

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[Bug 97643] Shader crashes radeon driver and brings the whole system down

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https://bugs.freedesktop.org/show_bug.cgi?id=97643

Cris <cristiano04@gmail.com> changed:

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

--- Comment #9 from Cris <cristiano04@gmail.com> ---
(In reply to almos from comment #8)
> (In reply to Cris from comment #7)
> > (In reply to Nicolai Hähnle from comment #6)
> > > Cris, do please try with more recent Mesa + LLVM as well.
> > > 
> > > If that still crashes, can you provide a backtrace of where mpv crashes?
> > > dmesg output from the crash could also give some context.
> > 
> > I did, I upgraded to llvm-3.9.0 and mesa-git, and the issue went away. Most
> > conservative distros might have a hard time though.
> > 
> > Thanks anyway.
> 
> Doesn't that mean that a userspace code can crash the kernel, but the most
> recent version of that code doesn't do it? Ideally, the kernel should be
> more resilient than that IMHO.

It's crashing now and I'm using -git (llvm, mesa, radeon). When it doesn't,
it's unbearably slow. It definitely shouldn't happen.

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[Bug 97643] Shader crashes radeon driver and brings the whole system down

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https://bugs.freedesktop.org/show_bug.cgi?id=97643

Cris <cristiano04@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|12.0                        |git

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[Bug 97643] Shader crashes radeon driver and brings the whole system down

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https://bugs.freedesktop.org/show_bug.cgi?id=97643

--- Comment #10 from Cris <cristiano04@gmail.com> ---
Can confirm this is no longer happening and the performance is BEARABLE. I
still get dropped frames here and there though, which definitely shouldn't be
happening.

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[Bug 97643] Shader crashes radeon driver and brings the whole system down

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https://bugs.freedesktop.org/show_bug.cgi?id=97643

Cris <cristiano04@gmail.com> changed:

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

--- Comment #11 from Cris <cristiano04@gmail.com> ---
No longer an issue. Recompiled llvm-git and mesa-git and everything works fine
with no frame drops, including lower resolution videos (which were grinding
everything to a halt).

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