<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - glsl: NULL type value in add_uniform() leads to SIGSEGV"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95395">95395</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>glsl: NULL type value in add_uniform() leads to SIGSEGV
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>11.2
</td>
</tr>
<tr>
<th>Hardware</th>
<td>ARM
</td>
</tr>
<tr>
<th>OS</th>
<td>OpenBSD
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>glsl-compiler
</td>
</tr>
<tr>
<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jsg@openbsd.org
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=123737" name="attach_123737" title="glxinfo from the arm machine">attachment 123737</a> <a href="attachment.cgi?id=123737&action=edit" title="glxinfo from the arm machine">[details]</a></span>
glxinfo from the arm machine
When running glxgears with Mesa 11.2.2 over X11 forwarding with the gallium
softpipe renderer on OpenBSD arm I see the following crash.
Program received signal SIGSEGV, Segmentation fault.
add_uniform (this=Variable "this" is not available.) at
/usr/xenocara/lib/mesa/src/compiler/glsl/builtin_variables.cpp:544
544 const unsigned array_count = type->is_array() ? type->length : 1;
Current language: auto; currently c++
(gdb) bt
#0 add_uniform (this=Variable "this" is not available.) at
/usr/xenocara/lib/mesa/src/compiler/glsl/builtin_variables.cpp:544
#1 0x453d97ec in generate_uniforms (this=0xbfff1508) at
/usr/xenocara/lib/mesa/src/compiler/glsl/builtin_variables.cpp:882
#2 0x453db110 in _mesa_glsl_initialize_variables (instructions=Variable
"instructions" is not available.
) at /usr/xenocara/lib/mesa/src/compiler/glsl/builtin_variables.cpp:1304
#3 0x451ec5e4 in _mesa_get_fixed_func_fragment_program (ctx=0x40246000) at
/usr/xenocara/lib/mesa/src/mesa/main/ff_fragment_shader.cpp:1225
#4 0x4529d038 in _mesa_update_state_locked () at glsl_symbol_table.h:45
#5 0x4529d1b0 in _mesa_update_state () at glsl_symbol_table.h:45
#6 0x451b8268 in _mesa_Clear () at nir_builder_opcodes.h:80
#7 0x469e3e30 in glClear () from /usr/X11R6/lib/libGL.so.17.0
#8 0x0000a998 in __register_frame_info ()
#9 0xbfff1a80 in ?? ()
Cannot access memory at address 0x34388d3f
(gdb) p type
$1 = (const glsl_type *) 0x0
(gdb) p name
$2 = 0x4558e6fc "gl_CurrentAttribVertMESA"
I can't reproduce this on amd64 forcing softpipe via LIBGL_ALWAYS_SOFTWARE,
which leads me to believe this is somehow alignment related.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
</ul>
</body>
</html>