[Bug 78717] New: radeon: Failed to allocate a buffer

[Bug 78717] New: radeon: Failed to allocate a buffer

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

          Priority: medium
            Bug ID: 78717
          Assignee: dri-devel@lists.freedesktop.org
           Summary: radeon: Failed to allocate a buffer
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mmstickman@gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: 10.1
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

When you set shadows to Ultra in the recently released open source game,
Tesseract, the game will segfault with the following:

radeon: Failed to allocate a buffer:
radeon:    size      : 536870912 bytes
radeon:    alignment : 32768 bytes
radeon:    domains   : 4
radeon: Failed to allocate a buffer:
radeon:    size      : 536870912 bytes
radeon:    alignment : 32768 bytes
radeon:    domains   : 4
radeon: Failed to allocate a buffer:
radeon:    size      : 536870912 bytes
radeon:    alignment : 32768 bytes
radeon:    domains   : 4
radeon: Failed to allocate a buffer:
radeon:    size      : 536870912 bytes
radeon:    alignment : 32768 bytes
radeon:    domains   : 4
radeon: Failed to allocate a buffer:
radeon:    size      : 536870912 bytes
radeon:    alignment : 32768 bytes
radeon:    domains   : 4
radeon: Failed to allocate a buffer:
radeon:    size      : 536870912 bytes
radeon:    alignment : 32768 bytes
radeon:    domains   : 4
failed allocating shadow atlas!

MSAA also seems to hang the entire machine

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[Bug 78717] radeon: Failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Product|Mesa                        |DRI
            Version|10.1                        |unspecified
          Component|Drivers/Gallium/radeonsi    |DRM/Radeon

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
This is probably due to the kernel radeon driver refusing to allocate BOs
larger than the CPU mappable part of VRAM. Please attach the output of dmesg
after the problem occurs.

> MSAA also seems to hang the entire machine

That would need to be tracked in a separate report.

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[Bug 78717] radeon: Failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

--- Comment #2 from mmstickman@gmail.com ---
The output of dmesg when the crash occurs is:

[106117.559369] radeon_gem_object_create:62 alloc size 512Mb bigger than 256Mb
limit
[106117.559470] radeon_gem_object_create:62 alloc size 512Mb bigger than 256Mb
limit
[106117.559714] radeon_gem_object_create:62 alloc size 512Mb bigger than 256Mb
limit

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[Bug 78717] radeon: Failed to allocate a buffer with Tesseract

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|radeon: Failed to allocate  |radeon: Failed to allocate
                   |a buffer                    |a buffer with Tesseract

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[Bug 78717] radeon: Failed to allocate a buffer with Tesseract

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

--- Comment #3 from Michel Dänzer <michel@daenzer.net> ---
Created attachment 100907
  --> https://bugs.freedesktop.org/attachment.cgi?id=100907&action=edit
Hack to allow allocating larger BOs

If you have at least 1G of VRAM, this hack might help. You might also need to
specify radeon.gartsize=1024 or larger on the kernel command line.

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[Bug 78717] radeon: Failed to allocate a buffer with Tesseract

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

jackdachef@gmail.com changed:

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

--- Comment #4 from jackdachef@gmail.com ---
potential fix for glamor that might fix this from a non-kernel approach (at
least it did for me):

https://bugs.freedesktop.org/show_bug.cgi?id=71190

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[Bug 78717] radeon: Failed to allocate a buffer with Tesseract

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

--- Comment #5 from Boyd Stephen Smith Jr. <Boyd.Stephen.Smith.Jr@GMail.com> ---
Getting a lot of these in my dmesg:

[154272.660917] radeon_gem_object_create:62 alloc size 340Mb bigger than 256Mb
limit
[154272.660925] radeon_gem_object_create:62 alloc size 340Mb bigger than 256Mb
limit
[154272.661012] radeon_gem_object_create:62 alloc size 340Mb bigger than 256Mb
limit
[154272.661020] radeon_gem_object_create:62 alloc size 340Mb bigger than 256Mb
limit

They match the similar errors I'm getting from (modded) Minecraft:

[16:08:10] [Client thread/ERROR]: ########## GL ERROR ##########
[16:08:10] [Client thread/ERROR]: @ Post render
[16:08:10] [Client thread/ERROR]: 1285: Out of memory
[16:08:10] [Client thread/ERROR]: ########## GL ERROR ##########
[16:08:10] [Client thread/ERROR]: @ Post render
[16:08:10] [Client thread/ERROR]: 1285: Out of memory
[16:08:10] [Client thread/ERROR]: ########## GL ERROR ##########
[16:08:10] [Client thread/ERROR]: @ Post render
[16:08:10] [Client thread/ERROR]: 1285: Out of memory
[16:08:10] [Client thread/ERROR]: ########## GL ERROR ##########
[16:08:10] [Client thread/ERROR]: @ Post render
[16:08:10] [Client thread/ERROR]: 1285: Out of memory

I'm on Debian Jessie, but I should be able to figure out how to run a newer X
or kernel for testing, if needed.

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[Bug 78717] radeon: Failed to allocate a buffer with Tesseract

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

Michel Dänzer <michel@daenzer.net> changed:

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

--- Comment #6 from Michel Dänzer <michel@daenzer.net> ---
This seems to work fine with current versions of kernel and Mesa.

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[Bug 78717] radeon: Failed to allocate a buffer with Tesseract

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

--- Comment #7 from Boyd Stephen Smith Jr. <Boyd.Stephen.Smith.Jr@GMail.com> ---
Any hint about when kernel (or mesa) version fixed this?  I'd like to upgrade,
but it could ease my way if I didn't have to go all the way to git HEAD.

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[Bug 78717] radeon: Failed to allocate a buffer with Tesseract

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https://bugs.freedesktop.org/show_bug.cgi?id=78717

--- Comment #8 from Michel Dänzer <michel@daenzer.net> ---
(In reply to Boyd Stephen Smith Jr. from comment #7)
> Any hint about when kernel (or mesa) version fixed this?

The BO allocation size limit was lifted in kernel 3.17. Mesa shouldn't matter
after all.

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