[Bug 101746] radeonsi: Kernel syscall lockup caused probably by GPU crash

[Bug 101746] radeonsi: Kernel syscall lockup caused probably by GPU crash

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101746

            Bug ID: 101746
           Summary: radeonsi: Kernel syscall lockup caused probably by GPU
                    crash
           Product: Mesa
           Version: 17.1
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: tobi291019@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 132600
  --> https://bugs.freedesktop.org/attachment.cgi?id=132600&action=edit
dmesg with lockup warning at the end

An amdgpu syscall, called by plasmashell, appears to deadlock randomly and
freeze X.org completely. Several graphics processes, plasmashell and X.org are
left stuck in D-State. Everything else continues to operate correctly,
including audio, networking, etc..

The issue seems to appear more frequently whilst running games, although I am
unable to find any particular pattern to it.

Running Arch Linux with a custom compiled linux-zen kernel, Mesa 17.1.4 with
Radeon RX 480. The issue has been around for a while and affects all 17.1.x
releases so far, however I am not certain for how long it has been around. The
issue is way too rare though for me to bisect the exact cause however.

Once I get another freeze I will see if I can get any userspace thread dumps
from plasmashell and possibly other processes as well as any logs containing
something interesting. (This may take anywhere from a few days to weeks due to
the random nature of the lockup)

(Also, just to clarify, this is not directly related to
https://bugs.freedesktop.org/show_bug.cgi?id=101294, this occured before and
after that issue being fixed.)

Originally reported at, as this manifests itself in the kernel first:
https://bugzilla.kernel.org/show_bug.cgi?id=196291

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[Bug 101746] radeonsi: Kernel syscall lockup caused probably by GPU crash

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https://bugs.freedesktop.org/show_bug.cgi?id=101746

--- Comment #1 from Christian König <deathsimple@vodafone.de> ---
For reference, checking on the fence status it looks like one of the SDMA
engines is hung.

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[Bug 101746] radeonsi: Kernel syscall lockup caused probably by GPU crash

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https://bugs.freedesktop.org/show_bug.cgi?id=101746

--- Comment #2 from Tobias Auerochs <tobi291019@gmail.com> ---
Sadly could not find any useful information out of various process logs, in
particular Xorg.0.log contains nothing error related. The only thing that is
somewhat interesting is that some processes that ought to use OpenGL do not end
up stuck in D state, whilst it appears only specifically plasmashell and Xorg
get stuck. (Obviously no graphical output works on any other processes either
anymore, nor can one switch virtual terminals anymore with Xorg being dead.)

If anyone knows any specific things that may be useful to debug, I can see if
anything helps.

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[Bug 101746] radeonsi: Kernel syscall lockup caused probably by GPU crash

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https://bugs.freedesktop.org/show_bug.cgi?id=101746

--- Comment #3 from Tobias Auerochs <tobi291019@gmail.com> ---
I have not encountered the random hang for a while now (specifically after
turning off slideshow in plasmashell) and am unaware of any reliable way to
reproduce this exact issue, so not entirely sure if this report being left open
is of much use.

However recently I also get a GPU crash by running Overwatch in wine (using a
patched version), but as I said, I am not sure if this is even remotely related
(besides both causing a GPU crash) at this time.

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[Bug 101746] radeonsi: Kernel syscall lockup caused probably by GPU crash

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https://bugs.freedesktop.org/show_bug.cgi?id=101746

Timothy Arceri <t_arceri@yahoo.com.au> changed:

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

--- Comment #4 from Timothy Arceri <t_arceri@yahoo.com.au> ---
(In reply to Tobias Auerochs from comment #3)
> I have not encountered the random hang for a while now (specifically after
> turning off slideshow in plasmashell) and am unaware of any reliable way to
> reproduce this exact issue, so not entirely sure if this report being left
> open is of much use.
> 

In that case I'll close the bug. Thanks.

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