Nouveau - Feb 2019 - [Bug 109556] New: [NV50/GT200] fifo: DMA_PUSHER ... (err: INVALID_CMD) push 00400040

https://bugs.freedesktop.org/show_bug.cgi?id=109556

            Bug ID: 109556
           Summary: [NV50/GT200] fifo: DMA_PUSHER ... (err: INVALID_CMD)
                    push 00400040
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: bastian.beischer at rwth-aachen.de
        QA Contact: xorg-team at lists.x.org

Created attachment 143301
  --> https://bugs.freedesktop.org/attachment.cgi?id=143301&action=edit
dmesg log

I'm using Arch Linux with Linux 4.20.6, X11 and the modesetting driver
together
with the KDE plasma desktop (5.14.5). After using the desktop for a while (in
particular, after causing some graphics load) visual artifacts appear and
plasma-desktop often hangs up. Sometimes the hanging process can be restarted,
other times X is completely frozen (but can still be ssh'ed into).

The dmesg log shows these lines, although only the fifo DMA_PUSHER lines seem
to consistently appear every time the problem is triggered:

[  227.576711] nouveau 0000:04:00.0: fifo: DMA_PUSHER - ch 6 [Xorg[751]] get
00000eb764 put 00000ec8ec ib_get 00000167 ib_put 0000016a state 80006eac (err:
INVALID_CMD) push 00400040
[  227.630897] nouveau 0000:04:00.0: gr: DATA_ERROR 00000005 [INVALID_ENUM]
[  227.630904] nouveau 0000:04:00.0: gr: 00100000 [] ch 6 [007f437000
Xorg[751]] subc 3 class 8397 mthd 1348 data 00046da0
[  227.630916] nouveau 0000:04:00.0: fifo: DMA_PUSHER - ch 6 [Xorg[751]] get
00000fcb8c put 0000102f84 ib_get 00000178 ib_put 0000017c state 80007354 (err:
INVALID_CMD) push 00400040
[  227.630926] nouveau 0000:04:00.0: gr: DATA_ERROR 00000005 [INVALID_ENUM]
[  227.630929] nouveau 0000:04:00.0: gr: 00100000 [] ch 6 [007f437000
Xorg[751]] subc 3 class 8397 mthd 134c data 00000000
[  227.630938] nouveau 0000:04:00.0: gr: DATA_ERROR 00000005 [INVALID_ENUM]
[  227.630941] nouveau 0000:04:00.0: gr: 00100000 [] ch 6 [007f437000
Xorg[751]] subc 3 class 8397 mthd 1350 data 000479d0
[  227.630950] nouveau 0000:04:00.0: gr: DATA_ERROR 00000005 [INVALID_ENUM]
[  227.630953] nouveau 0000:04:00.0: gr: 00100000 [] ch 6 [007f437000
Xorg[751]] subc 3 class 8397 mthd 1348 data 00046da0
[  227.630964] nouveau 0000:04:00.0: fifo: DMA_PUSHER - ch 6 [Xorg[751]] get
00000fcb8c put 0000102f84 ib_get 0000017a ib_put 0000017c state 80007354 (err:
INVALID_CMD) push 00400040
[  227.630975] nouveau 0000:04:00.0: gr: DATA_ERROR 00000005 [INVALID_ENUM]
[  227.630978] nouveau 0000:04:00.0: gr: 00100000 [] ch 6 [007f437000
Xorg[751]] subc 3 class 8397 mthd 134c data 00000000
[  227.630988] nouveau 0000:04:00.0: gr: DATA_ERROR 00000005 [INVALID_ENUM]
[  227.630991] nouveau 0000:04:00.0: gr: 00100000 [] ch 6 [007f437000
Xorg[751]] subc 3 class 8397 mthd 1350 data 000479d0
[  227.665017] nouveau 0000:04:00.0: gr: DATA_ERROR 0000000c [INVALID_BITFIELD]
[  227.665022] nouveau 0000:04:00.0: gr: 00100000 [] ch 6 [007f437000
Xorg[751]] subc 3 class 8397 mthd 135c data 000472e8
[  227.847944] nouveau 0000:04:00.0: fifo: DMA_PUSHER - ch 6 [Xorg[751]] get
0000138e10 put 000013b454 ib_get 000001ad ib_put 000001b0 state 40000004 (err:
INVALID_MTHD) push 00400040
[  227.850171] nouveau 0000:04:00.0: fifo: CACHE_ERROR - ch 6 [Xorg[751]] subc
0 mthd 0000 data 00146200
[  227.889579] nouveau 0000:04:00.0: Xorg[751]: multiple instances of buffer 4
on validation list
[  227.889588] nouveau 0000:04:00.0: Xorg[751]: validate_init
[  227.889590] nouveau 0000:04:00.0: Xorg[751]: validate: -22
[  227.891472] nouveau 0000:04:00.0: fifo: DMA_PUSHER - ch 6 [Xorg[751]] get
0000141bf0 put 00001479b8 ib_get 000001b4 ib_put 000001b5 state 80007418 (err:
INVALID_CMD) push 00400040

(the full dmesg.log is attached)

This problem is rather new. It was introduced with a package upgrade in Arch
Linux that happened within the last few days (I will attach the pacman upgrade
log for those who want to know.)

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--- Comment #1 from bastian.beischer at rwth-aachen.de ---
Created attachment 143302
  --> https://bugs.freedesktop.org/attachment.cgi?id=143302&action=edit
pacman upgrade log

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--- Comment #2 from bastian.beischer at rwth-aachen.de ---
Managed to pin down the problem to the upgrade of qt5 from 5.12.0 to 5.12.1. I
don't know how that upgrade can cause the bug, but problems go away when
downgrading again.

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qjztreez at outlook.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |qjztreez at outlook.com

--- Comment #3 from qjztreez at outlook.com ---
*** Bug 109558 has been marked as a duplicate of this bug. ***

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--- Comment #4 from bastian.beischer at rwth-aachen.de ---
I bisected the problem to a commit in Qt 5.12.1 which enabled multithreaded GL
rendering. I've read elsewhere that nouveau DRM doesn't deal well with
mt
rendering.

For more info, see here:

https://bugreports.qt.io/browse/QTBUG-73715

So from the nouveau side there's no new problem here and I think this bug
report can be closed.

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--- Comment #5 from bastian.beischer at rwth-aachen.de ---
(In reply to qjztreez from comment #3)
> *** Bug 109558 has been marked as a duplicate of this bug. ***
Are you using the oxygen theme? If yes, please checkout

https://bugreports.qt.io/browse/QTBUG-73691

which is not the same problem as mine.

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--- Comment #6 from qjztreez at gmail.com ---
(In reply to bastian.beischer from comment #5)
> (In reply to qjztreez from comment #3)
> > *** Bug 109558 has been marked as a duplicate of this bug. ***
> 
> Are you using the oxygen theme? If yes, please checkout
> 
> https://bugreports.qt.io/browse/QTBUG-73691
> 
> which is not the same problem as mine.
No, I am using Arc KDE theme with Kvantum, and I forgot to mention that either
downgrading Qt to 5.12.0 or installing the proprietary NVIDIA driver seemed to
solve my problem.

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

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

--- Comment #7 from Martin Peres <martin.peres at 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/xorg/driver/xf86-video-nouveau/issues/477.

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