http://bugs.freedesktop.org/show_bug.cgi?id=19835
Summary: buffer object deletion in _mesa_PopClientAttrib
Product: Mesa
Version: 7.2
Platform: x86 (IA32)
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Mesa core
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=22387)
--> (http://bugs.freedesktop.org/attachment.cgi?id=22387)
GLUT-based demo source to reproduce the bug
Mesa seems to delete a buffer object which is created inbetween
glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT) and glPopClientAttrib(). I've
attached a small GLUT-based demo which reproduces the bug. The output is:
| Mesa 7.3 implementation error: referencing deleted buffer object
| Please report at bugzilla.freedesktop.org
valgrind says:
==26887== Invalid read of size 4
==26887== at 0x40928FC: _mesa_reference_buffer_object (bufferobj.c:226)
==26887== by 0x4093101: bind_buffer_object (bufferobj.c:500)
==26887== by 0x80487D9: main (test.c:20)
==26887== Address 0x4acd058 is 0 bytes inside a block of size 32 free'd
==26887== at 0x401C9AA: free (vg_replace_malloc.c:323)
==26887== by 0x40CBD8C: _mesa_free (imports.c:85)
==26887== by 0x4092A0D: _mesa_delete_buffer_object (bufferobj.c:174)
==26887== by 0x40928F1: _mesa_reference_buffer_object (bufferobj.c:216)
==26887== by 0x4093101: bind_buffer_object (bufferobj.c:500)
==26887== by 0x41A2FC1: _mesa_PopClientAttrib (attrib.c:1432)
==26887== by 0x80487C6: main (in /home/mh/tests/mesa-buffer-crash/a.out)
Note: In the bugzilla webform, there is currently no option for Mesa version
7.3, so i've chosen 7.2 (which also shows that behavior).
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