[Bug 82162] New: Syslog flooded by [drm:radeon_gem_object_create] errors

[Bug 82162] New: Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

          Priority: medium
            Bug ID: 82162
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Syslog flooded by [drm:radeon_gem_object_create]
                    errors
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: commendsarnex@gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

Hello. I am using the obiaf PPA which is mesa 10.3 git compiled with LLVM 3.5. 
My syslog and kern.log spam the error messages below. They filled up my entire
hard drive with this error, and the spam occurs constantly. It appears to speed
up and only fills the hard drive when in 3D mode. I am using a Radeon HD 7950.



kernel: [41138.121106] [drm:radeon_gem_object_create] *ERROR* Failed to
allocate GEM object (0, 6, 4096, -22)
kernel: [41138.121121] [TTM] Illegal buffer object size
kernel: [41138.121123] [TTM] Illegal buffer object size


Thanks for the help.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

sarnex <commendsarnex@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|medium                      |high

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #1 from sarnex <commendsarnex@gmail.com> ---
Just a quick update, the spam does not begin until I'm in 3D mode. Once I'm in
3D mode, the spam is constantly and very quick. Once I quit the 3D application,
it slows down but is still there. The only way to stop this is to restart X or
the computer.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

sarnex <commendsarnex@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|major                       |critical

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #2 from sarnex <commendsarnex@gmail.com> ---
Ignore the last comment, spam is constant.

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #3 from Michel Dänzer <michel@daenzer.net> ---
Looks like the Mesa radeonsi driver tries to allocate buffer objects of zero
bytes size, which isn't allowed.

Since nobody else has reported this, I wonder if your driver binaries got
corrupted somehow. Does uninstalling the PPA and installing it again help?

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #4 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #3)
> Looks like the Mesa radeonsi driver tries to allocate buffer objects of zero
> bytes size, which isn't allowed.
> 
> Since nobody else has reported this, I wonder if your driver binaries got
> corrupted somehow. Does uninstalling the PPA and installing it again help?

Hi Michael, thanks for your response. Since PPA-Purge doesn't work for me with
this PPA, I decided to reinstall the OS. All I have done since the stock Mint
17 install is update the packages and install the oibaf PPA. When running
dmesg, I see the same errors as before. 

[   67.914111] [TTM] Illegal buffer object size
[   67.914113] [TTM] Illegal buffer object size
[   67.914115] [drm:radeon_gem_object_create] *ERROR* Failed to allocate GEM
object (0, 6, 4096, -22)

Any ideas?

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #5 from mmstickman@gmail.com ---
I've been having the same problem on Arch Linux for a while now with my Radeon
HD 7950 too. My Kabini laptop, which is also radeonsi, isn't affected. Dmesg
spams the following messages repeatedly:

[ 3069.134039] [TTM] Illegal buffer object size
[ 3069.134046] [drm:radeon_gem_object_create] *ERROR* Failed to allocate GEM
object (0, 6, 4096, -22)

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #6 from sarnex <commendsarnex@gmail.com> ---
I tried running a 3D game using the terminal to monitor stdout, and this was
constantly spammed as well. Not sure if it gives any additional information.

radeon: Failed to allocate a buffer:
radeon:    size      : 0 bytes
radeon:    alignment : 4096 bytes
radeon:    domains   : 4
radeon:    flags     : 4

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #7 from Christian König <deathsimple@vodafone.de> ---
(In reply to comment #6)
> I tried running a 3D game using the terminal to monitor stdout, and this was
> constantly spammed as well. Not sure if it gives any additional information.
> 
> radeon: Failed to allocate a buffer:
> radeon:    size      : 0 bytes
> radeon:    alignment : 4096 bytes
> radeon:    domains   : 4
> radeon:    flags     : 4

Yeah, pretty much the same message from userspace.

Looks like a bug in the userspace driver somewhere. Simplest thing to find it
would be to attach a debugger and get a backtrace when the message is printed.

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #8 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #7)
> (In reply to comment #6)
> > I tried running a 3D game using the terminal to monitor stdout, and this was
> > constantly spammed as well. Not sure if it gives any additional information.
> > 
> > radeon: Failed to allocate a buffer:
> > radeon:    size      : 0 bytes
> > radeon:    alignment : 4096 bytes
> > radeon:    domains   : 4
> > radeon:    flags     : 4
> 
> Yeah, pretty much the same message from userspace.
> 
> Looks like a bug in the userspace driver somewhere. Simplest thing to find
> it would be to attach a debugger and get a backtrace when the message is
> printed.

Hi, thanks for the response. I don't really know what I'm doing with GDB so
I'll explain what I did to get this output. I installed all of the dbg mesa
packages from the PPA. Then, I ran the command "LIBGL_DEBUG=verbose gdb
glxgears", and when error printed(immedaitely), I pressed Ctrl+C and then typed
bt full. If there's another way to do this please let me know.

http://pastebin.com/v1nA7JWY

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #9 from Michel Dänzer <michel@daenzer.net> ---
You need to set a breakpoint in the function printing the messages before
running glxgears. Something like

 b radeon_bomgr_create_bo if size == 0

should do the trick. Then get the backtrace when the breakpoint triggers.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #10 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #9)
> You need to set a breakpoint in the function printing the messages before
> running glxgears. Something like
> 
>  b radeon_bomgr_create_bo if size == 0
> 
> should do the trick. Then get the backtrace when the breakpoint triggers.

Hi Michael, here's the backtrace from that breakpoint. Please let me know if
you need anything I really want this bug fixed.


http://pastebin.com/Lw6rtfg8

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--- Comment #11 from Michel Dänzer <michel@daenzer.net> ---
Created attachment 104132
  --> https://bugs.freedesktop.org/attachment.cgi?id=104132&action=edit
r600g/radeon: Don't try to allocate CMASK BO of size 0

This patch should at least work around the problem, but I'm not sure it's the
proper fix.

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #12 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #11)
> Created attachment 104132 [details] [review]
> r600g/radeon: Don't try to allocate CMASK BO of size 0
> 
> This patch should at least work around the problem, but I'm not sure it's
> the proper fix.

Michel, the patch appears to fix the problem without any sideeffects. Is there
any chance of it getting into the main git? Thanks.

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #13 from sarnex <commendsarnex@gmail.com> ---
Sorry, it appears the issue has not been fixed. The message "radeon: Failed to
allocate a buffer" no longer prints, but the original radeon_gem_object_create
message still spams dmesg and kern.log.

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--- Comment #14 from Michel Dänzer <michel@daenzer.net> ---
(In reply to comment #13)
> Sorry, it appears the issue has not been fixed. The message "radeon: Failed
> to allocate a buffer" no longer prints, but the original
> radeon_gem_object_create message still spams dmesg and kern.log.

Did you restart X after building Mesa with the patch?

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #15 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #14)
> (In reply to comment #13)
> > Sorry, it appears the issue has not been fixed. The message "radeon: Failed
> > to allocate a buffer" no longer prints, but the original
> > radeon_gem_object_create message still spams dmesg and kern.log.
> 
> Did you restart X after building Mesa with the patch?

Wow, I'm an idiot. Yeah, everything is completely fixed after restarting X. No
side effects or log spam. Thank you based Michel.

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--- Comment #16 from sarnex <commendsarnex@gmail.com> ---
Any chance of seeing this in the git?

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #17 from Christian König <deathsimple@vodafone.de> ---
(In reply to comment #16)
> Any chance of seeing this in the git?

Yeah, but we might want to investigate further.

Somehow the size for the CMASK buffer ends up beeing zero. It's good to catch
that case, but we might want to figure out why it happened in the first place.

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--- Comment #18 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #17)
> (In reply to comment #16)
> > Any chance of seeing this in the git?
> 
> Yeah, but we might want to investigate further.
> 
> Somehow the size for the CMASK buffer ends up beeing zero. It's good to
> catch that case, but we might want to figure out why it happened in the
> first place.

Anything I can do to help?

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #19 from Marek Olšák <maraeo@gmail.com> ---
Could you please set a breakpoint in si_texture_get_cmask_info and print:

rscreen->tiling_info AND rscreen->info

OR

pipe_interleave_bytes AND num_pipes

Thanks.

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--- Comment #20 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #19)
> Could you please set a breakpoint in si_texture_get_cmask_info and print:
> 
> rscreen->tiling_info AND rscreen->info
> 
> OR
> 
> pipe_interleave_bytes AND num_pipes
> 
> Thanks.

Hi Marek, 

As I said earlier I don't know what I'm doing with GDB.I set the breakpoint
with "b si_texture_get_cmask_info", please let me know if that is wrong.

Here is the output from all of those:

(gdb) p rscreen->tiling_info
value has been optimized out
(gdb) p rscreen->info
value has been optimized out


(gdb) p pipe_interleave_bytes
$1 = 256
(gdb) p num_pipes
$2 = 12

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--- Comment #21 from Marek Olšák <maraeo@gmail.com> ---
Thanks. The real problem is that num_pipes is 12. That's good to know. I guess
I just need to get the number of pipes from GB_TILE_MODE, because that's what
we need for CMASK and HTILE calculations. That would be P8 or 8 pipes.

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--- Comment #22 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #21)
> Thanks. The real problem is that num_pipes is 12. That's good to know. I
> guess I just need to get the number of pipes from GB_TILE_MODE, because
> that's what we need for CMASK and HTILE calculations. That would be P8 or 8
> pipes.

Awesome, any more information you need from me? I can test any fixes.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #23 from mmstickman@gmail.com ---
Would be nice to get a patch out for the stable mesa builds as they are also
affected by this bug.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

Marek Olšák <maraeo@gmail.com> changed:

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

--- Comment #24 from Marek Olšák <maraeo@gmail.com> ---
Fixed by 955505f6ff1c8bba7eb142200d3bd065eb4d2297. The commit has been
nominated for inclusion in the next stable release. Closing.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #25 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #24)
> Fixed by 955505f6ff1c8bba7eb142200d3bd065eb4d2297. The commit has been
> nominated for inclusion in the next stable release. Closing.

Thank you very much!

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #26 from mmstickman@gmail.com ---
After compiling the latest version of mesa from git, I'm still getting this bug
with my Radeon HD 7950 spamming the system log.

[  372.835016] [TTM] Illegal buffer object size
[  372.835019] [TTM] Illegal buffer object size
[  372.835021] [drm:radeon_gem_object_create] *ERROR* Failed to allocate GEM
object (0, 6, 4096, -22)

So it doesn't seem to be fixed for me at least.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #27 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #26)
> After compiling the latest version of mesa from git, I'm still getting this
> bug with my Radeon HD 7950 spamming the system log.
> 
> [  372.835016] [TTM] Illegal buffer object size
> [  372.835019] [TTM] Illegal buffer object size
> [  372.835021] [drm:radeon_gem_object_create] *ERROR* Failed to allocate GEM
> object (0, 6, 4096, -22)
> 
> So it doesn't seem to be fixed for me at least.

You need to compile the 32 bit mesa packages you are using as well. It's must
easier to just install the oibaf PPA. I have no issues after the fix.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #28 from mmstickman@gmail.com ---
That's right -- it's working now. No need for PPAs on Arch when you have the
AUR. There's also a pacman repository for mesa-git that compiles daily so it's
just a matter of installing lib32-mesa-git and mesa-git.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

--- Comment #29 from sarnex <commendsarnex@gmail.com> ---
(In reply to comment #28)
> That's right -- it's working now. No need for PPAs on Arch when you have the
> AUR. There's also a pacman repository for mesa-git that compiles daily so
> it's just a matter of installing lib32-mesa-git and mesa-git.

Ah, I'm a debian-based plebian. Glad to see it works.

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[Bug 82162] Syslog flooded by [drm:radeon_gem_object_create] errors

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https://bugs.freedesktop.org/show_bug.cgi?id=82162

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dpcismael@gmail.com

--- Comment #30 from Alex Deucher <agd5f@yahoo.com> ---
*** Bug 82783 has been marked as a duplicate of this bug. ***

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