http://bugs.freedesktop.org/show_bug.cgi?id=25719
Summary: progs/perf/genmipmap segfaults in glGenerateMipmap()
Product: Mesa
Version: git
Platform: x86-64 (AMD64)
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Other
AssignedTo: mesa3d-dev@lists.sourceforge.net
ReportedBy: will.dy...@gmail.com
Mesa is git master at bf611cef29d664c2c2b56d2175c3a966c720e8b8. Using the r600
driver and 2.6.32+drm-radeon-testing with KMS enabled, but this happens even
when I set LIBGL_SOFTWARE_RENDERING=true.
progs/perf/genmipmaps segfaults on the very first call to glGenerateMipmap().
Here is the backtrace:
#0 0x0000000000000000 in ?? ()
#1 0x000000000042b9df in GenMipmap (count=2) at genmipmap.c:84
#2 0x000000000042bc07 in PerfMeasureRate (f=0x42b970 <GenMipmap>) at
common.c:76
#3 0x000000000042b910 in PerfDraw () at genmipmap.c:128
#4 0x000000000042be69 in Draw () at glmain.c:186
#5 0x00007ffff7bbc79d in fghRedrawWindow (window=0x660310,
enumerator=0x7fffffffdf40) at freeglut_main.c:212
#6 fghcbDisplayWindow (window=0x660310, enumerator=0x7fffffffdf40)
at freeglut_main.c:229
#7 0x00007ffff7bbfb79 in fgEnumWindows (
enumCallback=0x7ffff7bbc6f0 <fghcbDisplayWindow>,
enumerator=0x7fffffffdf40)
at freeglut_structure.c:388
#8 0x00007ffff7bbcc51 in fghDisplayAll () at freeglut_main.c:251
#9 glutMainLoopEvent () at freeglut_main.c:998
#10 0x00007ffff7bbd4a0 in glutMainLoop () at freeglut_main.c:1046
#11 0x000000000042be42 in main (argc=1, argv=0x7fffffffe1b8) at glmain.c:266
Interestingly, when I replace the call to glGenerateMipmap() with
glGenerateMipmapEXT(), the segfault does not happen and the program seems to
work.
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