[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=89734

            Bug ID: 89734
           Summary: GL_AMD_pinned_memory extension causing a kernel
                    hardlock
           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: poub365-bugzilla@yahoo.com
        QA Contact: dri-devel@lists.freedesktop.org

Kubuntu 15.04, kernel 4.0rc3, amd hd7850 with recent (from ppa oibaf) open
source drivers. Dolphin emulator runs fine except that I have a complete freeze
when I exit. I have to reboot the computer (although it seems to be still
running as I can remotely log with ssh). I tried under kde,  then under icewm,
to see if it was the compositor's fault. No change. Windowed or fullscreen:
same freeze. I tried to stop Dolphin with the interface buttons: same freeze.

kubuntu 15.04, i7 4770k non overclocked, amd hd7850 on open source drivers.

dmesg log is here:
http://pastebin.ca/2962286

I reported the bug to the Dolphin team. Told me that "Basically it's AMD's
GL_AMD_pinned_memory extension causing a kernel hardlock." and that I have to
report here.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

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https://bugs.freedesktop.org/show_bug.cgi?id=89734

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Drivers/Gallium/radeonsi    |DRM/Radeon
            Version|git                         |unspecified
            Product|Mesa                        |DRI
         QA Contact|dri-devel@lists.freedesktop |
                   |.org                        |

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Please attach the dmesg output here directly.

Christian, any ideas?

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=89734

Christian König <deathsimple@vodafone.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |deathsimple@vodafone.de

--- Comment #2 from Christian König <deathsimple@vodafone.de> ---
(In reply to Michel Dänzer from comment #1)
> Please attach the dmesg output here directly.
> 
> Christian, any ideas?

Not of hand. Looks like we don't handle something correctly on tearing this
down, but I'm not sure what it is.

Going to take a look at it.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 531 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #3 from Christian König <deathsimple@vodafone.de> ---
Created attachment 114584
  --> https://bugs.freedesktop.org/attachment.cgi?id=114584&action=edit
Debuging patch.

The only possible cause I can come up with is that we try to free the sg table
twice.

Please apply the attached debugging patch and report back with the resulting
dmesg.

Thanks in advance,
Christian.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 760 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #4 from poub365-bugzilla@yahoo.com ---
Created attachment 114609
  --> https://bugs.freedesktop.org/attachment.cgi?id=114609&action=edit
first requested dmesg

Here's the first requested dmesg output.
Applying the attached debugging patch is above my skills, unfortunately.
Don't know if you can create a binary so that I can test (or give me a
procedure on how to apply the patch).
Sorry for too low technical skills guys.
The dolphin version tested is 5921 (but same pb on older revisions). Freeze
happens on the exit of Mario Kart and Donkey Kong Country Wii (I didn't test
more as if seems independant of the game).

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #5 from Christian König <deathsimple@vodafone.de> ---
(In reply to poub365-bugzilla from comment #4)
> Created attachment 114609 [details]
> first requested dmesg
> 
> Here's the first requested dmesg output.
> Applying the attached debugging patch is above my skills, unfortunately.
> Don't know if you can create a binary so that I can test (or give me a
> procedure on how to apply the patch).
> Sorry for too low technical skills guys.
> The dolphin version tested is 5921 (but same pb on older revisions). Freeze
> happens on the exit of Mario Kart and Donkey Kong Country Wii (I didn't test
> more as if seems independant of the game).

Unfortunately we usually don't have time to provide binary packages for every
small patch we make, sorry.

You could try following one of the tutorials on the net how to compile your own
kernel with kbuntu. If you managed to do so applying the patch on top of it is
trivial.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 294 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #6 from poub365-bugzilla@yahoo.com ---
Created attachment 114670
  --> https://bugs.freedesktop.org/attachment.cgi?id=114670&action=edit
dmesg with patch

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 573 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #7 from poub365-bugzilla@yahoo.com ---
This is what I did (main commands)
git clone git://kernel.ubuntu.com/ubuntu/ubuntu-vivid.git

patch -p1
</home/jo/internet/Downloads/mesa/0001-WIP-userptr-debuging-patch.patch 

fakeroot debian/rules clean
fakeroot debian/rules binary-headers binary-generic

Installed the new kernel (3.19) and rebooted on it. Same freeze on the exit of
Dolphin. Here's the new dmesg log. Hope I did it right.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #8 from Christian König <deathsimple@vodafone.de> ---
(In reply to poub365-bugzilla from comment #7)
> Installed the new kernel (3.19) and rebooted on it. Same freeze on the exit
> of Dolphin. Here's the new dmesg log. Hope I did it right.

Yeah, thanks! That's exactly what I needed.

And my initial suspicion was right, for some reason we try to free the SG table
twice:

[  141.833287] [drm:radeon_ttm_backend_unbind [radeon]] *ERROR* ttm->sg =
ffff880222930e00, ttm->sg->sgl = ffff8802238bd200
...
[  141.898159] [drm:radeon_ttm_backend_unbind [radeon]] *ERROR* ttm->sg =
ffff880222930e00, ttm->sg->sgl =           (null)

Which then obviously causes problems.

For a quick fix we could try to double check if we haven't already freed the
table, but I think the underlying problem is that we try to free the BO twice
as well.

@Michel any ideas?

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

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[-- Attachment #1.1: Type: text/plain, Size: 384 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #9 from Christian König <deathsimple@vodafone.de> ---
Created attachment 114727
  --> https://bugs.freedesktop.org/attachment.cgi?id=114727&action=edit
Possible fix

Please test the attached patch it should fix your issue for now.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

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[-- Attachment #1.1: Type: text/plain, Size: 288 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #10 from Michel Dänzer <michel@daenzer.net> ---
(In reply to Christian König from comment #8)
> @Michel any ideas?

I'm afraid not. :(

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 504 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #11 from poub365-bugzilla@yahoo.com ---
Created attachment 114820
  --> https://bugs.freedesktop.org/attachment.cgi?id=114820&action=edit
screen flickers with patch

I tried the new patch.
I can exit now without freezing but I have a lot of artifacts (see video) in
the game but also on desktop (kde with opengl): the screen flickers a lot.
The dmesg will follow.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 337 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #12 from poub365-bugzilla@yahoo.com ---
Created attachment 114821
  --> https://bugs.freedesktop.org/attachment.cgi?id=114821&action=edit
dmesg with patch

No idea if that helps, but just in case.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

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[-- Attachment #1.1: Type: text/plain, Size: 643 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #13 from Michel Dänzer <michel@daenzer.net> ---
(In reply to poub365-bugzilla from comment #11)
> I can exit now without freezing but I have a lot of artifacts (see video) in
> the game but also on desktop (kde with opengl): the screen flickers a lot.

Unless setting the environment variable

 MESA_EXTENSION_OVERRIDE='-GL_AMD_pinned_memory'

avoids that problem, it's probably a separate issue that needs to be tracked in
its own report, including the corresponding Xorg.0.log file.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

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[-- Attachment #1.1: Type: text/plain, Size: 294 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #14 from poub365-bugzilla@yahoo.com ---
Created attachment 114841
  --> https://bugs.freedesktop.org/attachment.cgi?id=114841&action=edit
xorg with patch

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 1268 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #15 from poub365-bugzilla@yahoo.com ---
Created attachment 114842
  --> https://bugs.freedesktop.org/attachment.cgi?id=114842&action=edit
dmesg with patch

Very strange: I booted on the patch kernel today to get a Xlog. No flickering
on desktop neither on fullscreen game. I didn't upgrade any component since
last time. Dolphin is working fine from my quick test.

So, I can now exit dolphin without freezing. I get this message on the console:

The program 'dolphin-emu' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
  (Details: serial 8835 error_code 3 request_code 38 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
terminate called without an active exception
Abandon (core dumped)

I attach my dmesg and xorg.log just in case.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

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[-- Attachment #1.1: Type: text/plain, Size: 1595 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #16 from Christian König <deathsimple@vodafone.de> ---
(In reply to poub365-bugzilla from comment #15)
> Created attachment 114842 [details]
> dmesg with patch
> 
> Very strange: I booted on the patch kernel today to get a Xlog. No
> flickering on desktop neither on fullscreen game. I didn't upgrade any
> component since last time. Dolphin is working fine from my quick test.

Mhm, could be an uninitialized variable or something like this. Not sure off
hand. But if it works fine now it's unlikely that this is a driver problem.

> 
> So, I can now exit dolphin without freezing. I get this message on the
> console:
> 
> The program 'dolphin-emu' received an X Window System error.
> This probably reflects a bug in the program.
> The error was 'BadWindow (invalid Window parameter)'.
>   (Details: serial 8835 error_code 3 request_code 38 minor_code 0)
>   (Note to programmers: normally, X errors are reported asynchronously;
>    that is, you will receive the error a while after causing it.
>    To debug your program, run it with the --sync command line
>    option to change this behavior. You can then get a meaningful
>    backtrace from your debugger if you break on the gdk_x_error() function.)
> terminate called without an active exception
> Abandon (core dumped)
> 
> I attach my dmesg and xorg.log just in case.

That's a completely different issue, not even sure if it is a driver problem at
all.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

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[-- Attachment #1.1: Type: text/plain, Size: 1208 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

--- Comment #17 from Daniel Stone <daniel@fooishbar.org> ---
(In reply to Christian König from comment #16)
> (In reply to poub365-bugzilla from comment #15)
> > The program 'dolphin-emu' received an X Window System error.
> > This probably reflects a bug in the program.
> > The error was 'BadWindow (invalid Window parameter)'.
> >   (Details: serial 8835 error_code 3 request_code 38 minor_code 0)
> >   (Note to programmers: normally, X errors are reported asynchronously;
> >    that is, you will receive the error a while after causing it.
> >    To debug your program, run it with the --sync command line
> >    option to change this behavior. You can then get a meaningful
> >    backtrace from your debugger if you break on the gdk_x_error() function.)
> > terminate called without an active exception
> > Abandon (core dumped)
> > 
> > I attach my dmesg and xorg.log just in case.
> 
> That's a completely different issue, not even sure if it is a driver problem
> at all.

It's not - request #38 is XQueryPointer, which GL drivers don't do.

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[Bug 89734] GL_AMD_pinned_memory extension causing a kernel hardlock

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[-- Attachment #1.1: Type: text/plain, Size: 737 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=89734

Christian König <deathsimple@vodafone.de> changed:

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

--- Comment #18 from Christian König <deathsimple@vodafone.de> ---
In this case we can probably close this bug report, cause the original issue is
fixed.

If you find another issue which could be cause by the driver stack feel free to
open up a new bug.

Thanks for the help,
Christian.

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