[Bug 111869] Navi "divide error" hang

[Bug 111869] Navi "divide error" hang

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111869

            Bug ID: 111869
           Summary: Navi "divide error" hang
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: not set
          Priority: not set
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: git@dougty.com

Created attachment 145593
  --> https://bugs.freedesktop.org/attachment.cgi?id=145593&action=edit
divide-error_09-20.txt

Occasionally, usually while watching videos in Firefox, my GPU will hang and
the screen will freeze -- sound and keyboard input still work in the
background, and I need to use REISUB hotkeys to reboot. This is separate, in
addition to the sdma and ring gfx_0.0.0 hangs.

Upon rebooting, journalctl shows the attached "divide error". I've included
logs from 3 instances of it happening. I'm currently using the Jul 14 firmware
from Fedora's linux-firmware package as the hang appears to occur more often on
the newer firmware from
https://people.freedesktop.org/~agd5f/radeon_ucode/navi10/ however this may
just be placebo.

It occurs with or without the "0-sized IBs" kernel patch from
https://bugs.freedesktop.org/show_bug.cgi?id=111481#c33 and on both PCIe 3.0
and 4.0. I'm not using a PCIe riser and the card works without issue on Windows
10 dual boot.

CPU: 3700X
GPU: Sapphire 5700XT (reference)
Motherboard: Gigabyte X570-I (BIOS F4)
Kernel: 5.3.0
Mesa: mesa-git 1:19.3.0_devel.115682.3c966fd688c-1
LLVM: llvm-git 10.0.0_r327425.63f6066b53d-1

Please let me know if any more information would be helpful, or if there's
anything I can do to troubleshoot. Thanks.

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[Bug 111869] Navi "divide error" hang

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111869

--- Comment #1 from Doug Ty <git@dougty.com> ---
Created attachment 145594
  --> https://bugs.freedesktop.org/attachment.cgi?id=145594&action=edit
divide-error_09-30.txt

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[Bug 111869] Navi "divide error" hang

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111869

--- Comment #2 from Doug Ty <git@dougty.com> ---
Created attachment 145595
  --> https://bugs.freedesktop.org/attachment.cgi?id=145595&action=edit
divide-error_09-30-x2.txt

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[Bug 111869] Navi "divide error" hang

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https://bugs.freedesktop.org/show_bug.cgi?id=111869

--- Comment #3 from Andrew Sheldon <asheldon55@gmail.com> ---
I also get this error frequently with amd-staging-drm-next, but not with
5.4-rcX (at least I can't remember getting one with the latter).

Not sure if that suggests there is a regression, or something to do with the
5.3 kernel specifically (I don't remember having the error when
amd-staging-drm-next was using 5.2 kernel).

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[Bug 111869] Navi "divide error" hang

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https://bugs.freedesktop.org/show_bug.cgi?id=111869

--- Comment #4 from Andrew Sheldon <asheldon55@gmail.com> ---
I just want to add that I do still get this bug with 5.4-rcX, unfortunately.
It's the only remaining non-Mesa hang that I haven't been able to workaround.

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[Bug 111869] Navi "divide error" hang

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https://bugs.freedesktop.org/show_bug.cgi?id=111869

Martin Peres <martin.peres@free.fr> changed:

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

--- Comment #5 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/926.

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