Bug 31439

Summary:	Crash in glBufferSubData() with size == 0
Product:	Mesa	Reporter:	Cyp <cyp561>
Component:	Mesa core	Assignee:	mesa-dev
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium
Version:	7.9
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	patch to no-op glBufferSubData for size==0

Description Cyp 2010-11-07 03:34:27 UTC

glBufferSubData(GL_ARRAY_BUFFER, 0, 0, 0x7f28e803d850) is crashing, and I think that's supposed to be a valid (although useless) call.

(Using gentoo.)
media-libs/mesa = 7.9
x11-base/xorg-x11 = 7.4-r1
x11-drivers/xf86-video-ati = 6.13.1

#3  <signal handler called>
No symbol table info available.
#4  0x00007f30b9021522 in radeon_bo_is_referenced_by_cs (bo=0x0, cs=0x2529cb0) at radeon_bo.c:121
No locals.
#5  0x00007f30b94976b0 in ?? () from /usr/lib64/dri/r600_dri.so
No symbol table info available.
#6  0x000000000059898a in updateSectorGeometry () at ../../src/terrain.c:631

OpenGL Vendor : Advanced Micro Devices, Inc.
OpenGL Renderer : Mesa DRI R600 (RV710 954F) 20090101  TCL DRI2
OpenGL Version : 2.1 Mesa 7.9
Video Mode 1024 x 768 (32 bpp) (window)
OpenGL GLSL Version : 1.20

Please let me know if there's any relevant information missing.

Comment 1 Brian Paul 2010-11-07 08:40:34 UTC

Created attachment 40089 [details] [review]
patch to no-op glBufferSubData for size==0

Can you try this trivial patch?

Comment 2 Cyp 2010-11-07 10:42:57 UTC

(In reply to comment #1)
> Created an attachment (id=40089) [details]
> patch to no-op glBufferSubData for size==0
> 
> Can you try this trivial patch?

Doesn't crash anymore, with that patch. Thanks.

Comment 3 Brian Paul 2010-11-09 11:25:32 UTC

I've committed this change (6e2e136428b97d2424ebe626a30d7237015f7ea3)

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