[Mesa-dev] [Bug 42540] New: glxgears segfaults on POWER / Xvnc

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42540

             Bug #: 42540
           Summary: glxgears segfaults on POWER / Xvnc
    Classification: Unclassified
           Product: Mesa
           Version: 7.11
          Platform: PowerPC
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Other
        AssignedTo: mesa-dev at lists.freedesktop.org
        ReportedBy: hugh.m.bright at gmail.com


to reproduce:



EXPORT display=:5
Xvnc :5 -screen 0 800x600x24 &
glxgears
Segmentation fault



gdb glxgears



...
Program received signal SIGSEGV, Segmentation fault.
0x7c0802a6f8010010 in ?? ()
(gdb) bt
#0  0x7c0802a6f8010010 in ?? ()
#1  0x00000fffb7cd1454 in ?? () from /usr/lib64/dri/swrast_dri.so
#2  0x00000fffb7cd1588 in ?? () from /usr/lib64/dri/swrast_dri.so
#3  0x00000fffb7c61d58 in ?? () from /usr/lib64/dri/swrast_dri.so
#4  0x00000fffb7c5cc2c in ?? () from /usr/lib64/dri/swrast_dri.so
#5  0x00000fffb7c5d098 in ?? () from /usr/lib64/dri/swrast_dri.so
#6  0x00000fffb7a6968c in ?? () from /usr/lib64/dri/swrast_dri.so
#7  0x00000fffb7b39428 in ?? () from /usr/lib64/dri/swrast_dri.so
#8  0x00000fffb7c15b08 in ?? () from /usr/lib64/dri/swrast_dri.so
#9  0x00000fffb7a8f930 in ?? () from /usr/lib64/dri/swrast_dri.so
#10 0x00000fffb7a94024 in ?? () from /usr/lib64/dri/swrast_dri.so
#11 0x000000806c10e998 in .glCallList () from /usr/lib64/libGL.so.1
#12 0x0000000010002b54 in ?? ()
#13 0x000000001000201c in ?? ()
#14 0x000000806b3e1fa8 in .generic_start_main.isra.0 () from /lib64/libc.so.6
#15 0x000000806b3e219c in .__libc_start_main () from /lib64/libc.so.6
#16 0x0000000000000000 in ?? ()



glxinfo



name of display: :5
display: :5  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_OML_swap_method, 
    GLX_SGI_make_current_read, GLX_SGIS_multisample, GLX_SGIX_fbconfig, 
    GLX_SGIX_pbuffer, GLX_MESA_copy_sub_buffer, GLX_INTEL_swap_event
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context, 
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_framebuffer_sRGB, 
    GLX_MESA_copy_sub_buffer, GLX_MESA_multithread_makecurrent, 
    GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, 
    GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync, 
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap, 
    GLX_INTEL_swap_event
GLX version: 1.4
GLX extensions:
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context, 
    GLX_EXT_visual_info, GLX_EXT_visual_rating, 
    GLX_MESA_multithread_makecurrent, GLX_OML_swap_method, 
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_INTEL_swap_event
OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on llvmpipe
OpenGL version string: 2.1 Mesa 7.11
OpenGL shading language version string: 1.20
...


uname -a

Linux gcc1-power7.osuosl.org 3.1.0-0.rc9.git0.2.fc16.kh.ppc64 #1 SMP Wed Oct 12
22:41:01 UTC 2011 ppc64 ppc64 ppc64 GNU/Linux

cat /etc/issue

Fedora release 16 (Verne)


another opengl program segfaults like so:


#0  0x7c0802a6f8010010 in ?? ()
#1  0x00000fffb1121454 in ?? () from /usr/lib64/dri/swrast_dri.so
#2  0x00000fffb1121588 in ?? () from /usr/lib64/dri/swrast_dri.so
#3  0x00000fffb10b1d58 in ?? () from /usr/lib64/dri/swrast_dri.so
#4  0x00000fffb10acc2c in ?? () from /usr/lib64/dri/swrast_dri.so
#5  0x00000fffb10ad098 in ?? () from /usr/lib64/dri/swrast_dri.so
#6  0x00000fffb0eb968c in ?? () from /usr/lib64/dri/swrast_dri.so
#7  0x00000fffb0f89428 in ?? () from /usr/lib64/dri/swrast_dri.so
#8  0x00000fffb0f85910 in ?? () from /usr/lib64/dri/swrast_dri.so
#9  0x00000fffb0f7ce70 in ?? () from /usr/lib64/dri/swrast_dri.so
#10 0x00000fffb0f82fd8 in ?? () from /usr/lib64/dri/swrast_dri.so
#11 0x00000fffb0f14a44 in ?? () from /usr/lib64/dri/swrast_dri.so
#12 0x000000806c1186f0 in .glPopMatrix () from /usr/lib64/libGL.so.1
. . . 


Another GL program segfaults with a similar pattern.


Thank you for any help you can provide.

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