[Bug 91399] [i965] brw::vec4_visitor::run SIGSEGV on OpenBSD

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Jul 19 23:40:42 PDT 2015


--- Comment #1 from Jonathan Gray <jsg at openbsd.org> ---
The same crash occurs on the 10.5 branch, the 10.4 branch doesn't have the

(gdb) run
Starting program: /usr/X11R6/bin/glxgears 
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.

Program received signal SIGSEGV, Segmentation fault.
0x00001bc0f409ac9a in brw::vec4_visitor::run (this=0x7f7ffffe7790) at
warning: Source file is more recent than executable.

Current language:  auto; currently c++
(gdb) bt
#0  0x00001bc0f409ac9a in brw::vec4_visitor::run (this=0x7f7ffffe7790) at
#1  0x00001bc0f409b4ba in brw_vs_emit (brw=0x1bc136746030, prog=0x1bc141553e30,
    prog_data=0x7f7ffffe8680, mem_ctx=0x1bc150dea6b0,
final_assembly_size=0x7f7ffffe8824) at brw_vec4.cpp:1933
#2  0x00001bc0f40c10f0 in do_vs_prog (brw=0x1bc136746030, prog=0x1bc141553e30,
vp=0x1bc0c254f800, key=Variable "key" is not available.
) at brw_vs.c:291
#3  0x00001bc0f40c1353 in brw_vs_precompile (ctx=0x1bc136746030,
shader_prog=0x1bc141553e30, prog=0x1bc0c254f800)
    at brw_vs.c:514
#4  0x00001bc0f4091912 in brw_link_shader (ctx=0x1bc136746030,
shProg=0x1bc141553e30) at brw_shader.cpp:71
#5  0x00001bc0f3eabed9 in _mesa_glsl_link_shader (ctx=0x1bc136746030,
prog=0x1bc141553e30) at program/ir_to_mesa.cpp:3035
#6  0x00001bc0f3dc358a in link_program (ctx=0x1bc136746030, program=Variable
"program" is not available.
) at main/shaderapi.c:932
#7  0x00001bc0f3ea9268 in meta_clear (ctx=0x1bc136746030, buffers=18,
glsl=true) at drivers/common/meta.c:1542
#8  0x00001bc0f3fde9d9 in brw_clear (ctx=0x1bc136746030, mask=0) at
#9  0x00001bbe5610302e in __register_frame_info () from /usr/X11R6/bin/glxgears
#10 0x00001bbe56103c6d in __register_frame_info () from /usr/X11R6/bin/glxgears
#11 0x00001bbe56101e31 in ?? () from /usr/X11R6/bin/glxgears
#12 0x0000000000000000 in ?? ()
(gdb) p prog
$1 = (gl_program * const) 0x0

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