[Bug 42703] New: [NV17] Reduce GL_MAX_TEXTURE_SIZE to avoid memory overflow

[Bug 42703] New: [NV17] Reduce GL_MAX_TEXTURE_SIZE to avoid memory overflow

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=42703

             Bug #: 42703
           Summary: [NV17] Reduce GL_MAX_TEXTURE_SIZE to avoid memory
                    overflow
    Classification: Unclassified
           Product: Mesa
           Version: unspecified
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: ballogy-HLx8PRj2pn30Br+ELjv3iA@public.gmane.org


Created attachment 53293
  --> https://bugs.freedesktop.org/attachment.cgi?id=53293
Reduce GL_MAX_TEXTURE_SIZE to avoid memory overflow

I have a GeForce4 MX 440-SE card with 64 MB RAM, and I have the following
problems:
1. When I maximize the windows of Clutter-based apps (quadrapassel,
emerillon...), their contents are disappear, and some other parts of the screen
are corrupted. 
2. When I start a new game in extremetuxracer second or third time, some
textures are corrupted.

When it happens, I get the following messages in dmesg several times:
[21415.164810] [drm] nouveau 0000:01:00.0: fail ttm_validate
[21415.164821] [drm] nouveau 0000:01:00.0: validate vram_list
[21415.165831] [drm] nouveau 0000:01:00.0: validate: -12
[21415.878743] nouveau_ratelimit: 4 callbacks suppressed
[21415.878750] [drm] nouveau 0000:01:00.0: PGRAPH - ERROR nsource: DATA_ERROR
nstatus: BAD_ARGUMENT PROTECTION_FAULT
[21415.878763] [drm] nouveau 0000:01:00.0: PGRAPH - ch 2/4 class 0x0089 mthd
0x0304 data 0x02b5b500


I found that these problems can be fixed by reducing MaxTextureLevels value:
- Reducing from 12 to 11 resolves the first problem.
- Reducing to 10 resolves the second problem also.

I attached a patch which makes this change.

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[Bug 42703] [NV17] Reduce GL_MAX_TEXTURE_SIZE to avoid memory overflow

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=42703

Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> changed:

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

--- Comment #1 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
It appears that this bug report has laid dormant for quite a while. Sorry we
haven't gotten to it. Since we fix bugs all the time, chances are pretty good
that your issue has been fixed with the latest software. Please give it a shot.
(Linux kernel 3.10.7, xf86-video-nouveau 1.0.9, mesa 9.1.6, or their git
versions.) If upgrading to the latest isn't an option for you, your distro's
bugzilla is probably the right destination for your bug report.

In an effort to clean up our bug list, we're pre-emptively closing all bugs
that haven't seen updates since 2011. If the original issue remains, please
make sure to provide fresh info, see http://nouveau.freedesktop.org/wiki/Bugs/
for what we need to see, and re-open this one.

Thanks,

The Nouveau Team

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