https://bugs.freedesktop.org/show_bug.cgi?id=55986

Priority: medium Bug ID: 55986 Assignee: dri-devel@lists.freedesktop.org Summary: SIGSEGV in i830Enable (ctx=0x806a000, cap=2960, state=0 '\000') at i830_state.c:852 Severity: normal Classification: Unclassified OS: Linux (All) Reporter: shawnlandden@gmail.com Hardware: x86 (IA32) Status: NEW Version: 8.0 Component: Drivers/DRI/i830 Product: Mesa

Ubuntu 12.04, mesa 8.0, GL_CULL_FACE? or GL_STENCIL_TEST + f92b2e5e90f456491fc15b3b9612381a83726606 ?

(gdb) run Starting program: /usr/bin/glxgears [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault. 0x0055cf2b in ?? () from /usr/lib/i386-linux-gnu/dri/i915_dri.so (gdb) quit A debugging session is active.

Inferior 1 [process 8056] will be killed.

Quit anyway? (y or n) y nb@MakerStation:~$ gdb glxgears GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2) 7.4-2012.04 Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i686-linux-gnu". For bug reporting instructions, please see: http://bugs.launchpad.net/gdb-linaro/... Reading symbols from /usr/bin/glxgears...(no debugging symbols found)...done. (gdb) run Starting program: /usr/bin/glxgears [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault. 0x0055cf2b in i830Enable (ctx=0x806a000, cap=2960, state=0 '\000') at i830_state.c:852 852 i830_state.c: No such file or directory. (gdb) bt #0 0x0055cf2b in i830Enable (ctx=0x806a000, cap=2960, state=0 '\000') at i830_state.c:852 #1 0x0055ef0a in i830_update_draw_buffer (intel=0x806a000) at i830_vtbl.c:831 #2 0x0057c103 in intel_draw_buffer (ctx=0x806a000) at ../../../../../src/mesa/drivers/dri/intel/intel_buffers.h:50 #3 intelMakeCurrent (driContextPriv=0x8058a30, driDrawPriv=0x823db98, driReadPriv=0x823db98) at intel_context.c:881 #4 0x0055813b in driBindContext (pcp=0x8058a30, pdp=0x823db98, prp=0x823db98) at ../common/dri_util.c:330 #5 0x0017450d in dri2_bind_context (context=0x805abd8, old=0x1874e0, draw=62914562, read=62914562) at dri2_glx.c:154 #6 0x0014bff2 in MakeContextCurrent (dpy=0x804e008, draw=62914562, read=62914562, gc_user=0x805abd8) at glxcurrent.c:269 #7 0x0014c173 in glXMakeCurrent (dpy=0x804e008, draw=62914562, gc=0x805abd8) at glxcurrent.c:303 #8 0x0804a4f7 in ?? () #9 0x003054d3 in __libc_start_main () from /lib/i386-linux-gnu/libc.so.6 #10 0x08049101 in ?? () (gdb) bt full #0 0x0055cf2b in i830Enable (ctx=0x806a000, cap=2960, state=0 '\000') at i830_state.c:852 irbStencil = 0x0 hw_stencil = false #1 0x0055ef0a in i830_update_draw_buffer (intel=0x806a000) at i830_vtbl.c:831 ctx = 0x806a000 fb = 0x823ae70 colorRegions = {0x0, 0x8058a30, 0x823db01, 0x101b5f1, 0x806a000, 0x823db98, 0x172849, 0x186ff4} depthRegion = 0x0 irbDepth = <optimized out> irbStencil = <optimized out> #2 0x0057c103 in intel_draw_buffer (ctx=0x806a000) at ../../../../../src/mesa/drivers/dri/intel/intel_buffers.h:50 No locals. #3 intelMakeCurrent (driContextPriv=0x8058a30, driDrawPriv=0x823db98, driReadPriv=0x823db98) at intel_context.c:881 fb = 0x823ae70 readFb = <optimized out> intel = 0x806a000 #4 0x0055813b in driBindContext (pcp=0x8058a30, pdp=0x823db98, prp=0x823db98) at ../common/dri_util.c:330 No locals. ---Type <return> to continue, or q <return> to quit--- #5 0x0017450d in dri2_bind_context (context=0x805abd8, old=0x1874e0, draw=62914562, read=62914562) at dri2_glx.c:154 pcp = 0x805abd8 psc = 0x8058a60 pdraw = 0x805ad70 pread = 0x805ad70 pdp = <optimized out> #6 0x0014bff2 in MakeContextCurrent (dpy=0x804e008, draw=62914562, read=62914562, gc_user=0x805abd8) at glxcurrent.c:269 gc = 0x805abd8 oldGC = 0x1874e0 #7 0x0014c173 in glXMakeCurrent (dpy=0x804e008, draw=62914562, gc=0x805abd8) at glxcurrent.c:303 No locals. #8 0x0804a4f7 in ?? () No symbol table info available. #9 0x003054d3 in __libc_start_main () from /lib/i386-linux-gnu/libc.so.6 No symbol table info available. #10 0x08049101 in ?? () No symbol table info available. (gdb) info registers eax 0x0 0 ecx 0x8 8 edx 0x55cb70 5622640 ebx 0x5b3ff4 5980148 esp 0xbfffefb0 0xbfffefb0 ebp 0x822ec10 0x822ec10 esi 0x806a000 134651904 edi 0x0 0 eip 0x55cf2b 0x55cf2b <i830Enable+955> eflags 0x10246 [ PF ZF IF RF ] cs 0x73 115 ss 0x7b 123 ds 0x7b 123 es 0x7b 123 fs 0x0 0 gs 0x33 51 (gdb)