[Mesa-dev] [Bug 60518] New: glDrawElements segfault when compiled into display list

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Feb 8 13:55:06 PST 2013


          Priority: medium
            Bug ID: 60518
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: glDrawElements segfault when compiled into display
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: core13 at gmx.net
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: 9.0
         Component: Mesa core
           Product: Mesa

VDrift git on a Fedora 18 box (Linux 3.7.6-201.fc18.x86_64, 2.1 Mesa 9.0.1)
will segfault in the GL2/1 fallback path:

Program received signal SIGSEGV, Segmentation fault.
0x00007fffed92461b in _save_VertexAttrib4fvARB (index=<optimized out>, v=0x0)
at ../../../src/mesa/vbo/vbo_attrib_tmp.h:547
547          ATTR4FV(VBO_ATTRIB_GENERIC0 + index, v);
(gdb) bt
#0  0x00007fffed92461b in _save_VertexAttrib4fvARB (index=<optimized out>,
    at ../../../src/mesa/vbo/vbo_attrib_tmp.h:547
#1  0x00007fffed828a1a in _ae_ArrayElement (elt=0) at
#2  0x00007fffed9197bd in _save_OBE_DrawElements (mode=4, count=<optimized
out>, type=<optimized out>, 
    indices=<optimized out>) at ../../../src/mesa/vbo/vbo_save_api.c:1252
#3  0x000000000058bfb9 in MODEL::GenerateListID (this=0x9e7080,
error_output=...) at src/graphics/model.cpp:185
#4  0x000000000058b8b3 in MODEL::Load (this=0x9e7080, varray=...,
error_output=..., genlist=true)
    at src/graphics/model.cpp:85

The code looks like this (with vertex, texcoord, normal pointers set):

glNewList(listid, GL_COMPILE);
glDrawElements(GL_TRIANGLES, facecount, GL_UNSIGNED_INT, faces);

Apitrace attached.

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