* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
@ 2016-12-20 11:22 bugzilla-daemon
2016-12-20 11:23 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-12-20 11:22 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
Bug ID: 99158
Summary: vdpau segfaults and gpu locks with kodi on R9285
Product: Mesa
Version: git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Gallium/radeonsi
Assignee: dri-devel@lists.freedesktop.org
Reporter: adf.lists@gmail.com
QA Contact: dri-devel@lists.freedesktop.org
Created attachment 128583
--> https://bugs.freedesktop.org/attachment.cgi?id=128583&action=edit
some segfaults
This is an initial report no bisects as I have no clue when it started yet.
It seems there is an unlucky timing situation with kodi that may segfault
radeonsi or lock gpu playing videos with vdpau h/w decode + temporal vdpau
deint which is default kodi settings.
I can't reproduce with mplayer or mpv.
It seems to need HD interlaced + deint, but that may be just because it changes
timing.
Running with VDPAU_TRACE=1 so far avoids the crash/lock, as does setting cpus
to perf.
Running kodi git, but it's reproducable with 11 month old git as well.
It's easiest to provoke starting kodi with a file on command line, but is
possible starting from running kodi menu - possible improved chance of
crash/lock by moving mouse after clicking file to make overlay instantly render
over video.
Attaching some segfaults and locks.
I am running git mesa/llvm/kernel and the crash is rare enough that I may have
missed it for ages given the amount I test kodi. Additionally the best way to
provoke = repeated command line start, only started being possible again
ecently due to a kodi bug.
The segfaults are a bit random.
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* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
2016-12-20 11:22 [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285 bugzilla-daemon
@ 2016-12-20 11:23 ` bugzilla-daemon
2016-12-20 14:41 ` bugzilla-daemon
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8 siblings, 0 replies; 10+ messages in thread
From: bugzilla-daemon @ 2016-12-20 11:23 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
--- Comment #1 from Andy Furniss <adf.lists@gmail.com> ---
Created attachment 128584
--> https://bugs.freedesktop.org/attachment.cgi?id=128584&action=edit
some gpu locks
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* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
2016-12-20 11:22 [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285 bugzilla-daemon
2016-12-20 11:23 ` bugzilla-daemon
@ 2016-12-20 14:41 ` bugzilla-daemon
2016-12-22 0:00 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-12-20 14:41 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
--- Comment #2 from Michel Dänzer <michel@daenzer.net> ---
Can you try reproducing it in valgrind and see if that raises some interesting
errors?
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* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
2016-12-20 11:22 [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285 bugzilla-daemon
2016-12-20 11:23 ` bugzilla-daemon
2016-12-20 14:41 ` bugzilla-daemon
@ 2016-12-22 0:00 ` bugzilla-daemon
2016-12-29 11:03 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-12-22 0:00 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
--- Comment #3 from Andy Furniss <adf.lists@gmail.com> ---
Couldn't get it to crash with valgrind.
Bisect not 100% sure as it seemed to get harder to provoke going back in time,
but it does seem to need temporal deint and I got -
first bad commit: [d0d5f7600c2e8ab8d0c153787185f7a534753edd]
Revert "st/vdpau: use linear layout for output surfaces
The revert reverts from current head, so I will test for a while like that.
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* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
2016-12-20 11:22 [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285 bugzilla-daemon
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2016-12-22 0:00 ` bugzilla-daemon
@ 2016-12-29 11:03 ` bugzilla-daemon
2017-01-04 9:02 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-12-29 11:03 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
--- Comment #4 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Andy Furniss from comment #3)
> Couldn't get it to crash with valgrind.
>
> Bisect not 100% sure as it seemed to get harder to provoke going back in
> time, but it does seem to need temporal deint and I got -
>
> first bad commit: [d0d5f7600c2e8ab8d0c153787185f7a534753edd]
> Revert "st/vdpau: use linear layout for output surfaces
>
> The revert reverts from current head, so I will test for a while like that.
I've been running OK with the revert reverted for some time now, testing with a
script that repeatedly starts kodi, so it does seem to be this commit that
causes some timing issue with vdpau temporal deint.
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* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
2016-12-20 11:22 [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285 bugzilla-daemon
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2016-12-29 11:03 ` bugzilla-daemon
@ 2017-01-04 9:02 ` bugzilla-daemon
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From: bugzilla-daemon @ 2017-01-04 9:02 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
--- Comment #5 from Christian König <deathsimple@vodafone.de> ---
Yeah and that actually makes sense, by using linear layout you also disable
DCC.
Does using R600_DEBUG=nodcc help as well?
Marek please take a look at the backtraces in the first post. It sounds like
one thread is getting the handle of a texture which results in a DCC
decompress.
Could it be that we have a race with that?
Regards,
Christian.
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* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
2016-12-20 11:22 [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285 bugzilla-daemon
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2017-01-04 9:02 ` bugzilla-daemon
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From: bugzilla-daemon @ 2017-01-04 10:18 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
--- Comment #6 from Marek Olšák <maraeo@gmail.com> ---
We could get a race if vlVdpOutputSurfaceDMABuf is called from a different
thread than the context is normally used with. Can that happen?
You can try to test this:
diff --git a/src/gallium/state_trackers/vdpau/output.c
b/src/gallium/state_trackers/vdpau/output.c
index 64574b2..96474fb 100644
--- a/src/gallium/state_trackers/vdpau/output.c
+++ b/src/gallium/state_trackers/vdpau/output.c
@@ -804,7 +804,7 @@ VdpStatus vlVdpOutputSurfaceDMABuf(VdpOutputSurface
surface,
whandle.type = DRM_API_HANDLE_TYPE_FD;
pscreen = vlsurface->surface->texture->screen;
- if (!pscreen->resource_get_handle(pscreen, vlsurface->device->context,
+ if (!pscreen->resource_get_handle(pscreen, NULL,
vlsurface->surface->texture, &whandle,
PIPE_HANDLE_USAGE_READ_WRITE))
return VDP_STATUS_NO_IMPLEMENTATION;
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* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
2016-12-20 11:22 [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285 bugzilla-daemon
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2017-01-04 10:18 ` bugzilla-daemon
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From: bugzilla-daemon @ 2017-01-04 10:49 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
--- Comment #7 from Marek Olšák <maraeo@gmail.com> ---
Nevermind. This series should fix it for VDPAU and VAAPI:
https://patchwork.freedesktop.org/series/17480/
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* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
2016-12-20 11:22 [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285 bugzilla-daemon
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2017-01-04 10:49 ` bugzilla-daemon
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From: bugzilla-daemon @ 2017-01-05 0:00 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
--- Comment #8 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Marek Olšák from comment #7)
> Nevermind. This series should fix it for VDPAU and VAAPI:
>
> https://patchwork.freedesktop.org/series/17480/
Yea, it's OK with these, thanks.
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* [Bug 99158] vdpau segfaults and gpu locks with kodi on R9285
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https://bugs.freedesktop.org/show_bug.cgi?id=99158
Christian König <deathsimple@vodafone.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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