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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Segmentation fault when running shader on Intel Mesa"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111009">111009</a>
</td>
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<th>Summary</th>
<td>Segmentation fault when running shader on Intel Mesa
</td>
</tr>
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<th>Product</th>
<td>Mesa
</td>
</tr>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Drivers/DRI/i965
</td>
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<th>Assignee</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>jiradet.jd@gmail.com
</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=144650" name="attach_144650" title="The shader containing code that produces an error and the stack trace by catchsegv.">attachment 144650</a> <a href="attachment.cgi?id=144650&action=edit" title="The shader containing code that produces an error and the stack trace by catchsegv.">[details]</a></span>
The shader containing code that produces an error and the stack trace by
catchsegv.
I ran a piglit shader test with the following fragment shader which should
render the red solid color image. However, I got an error: Segmentation fault
(core dumped). The attachment are the shader and the log obtained when running
shader runner with catchsegv tool (by using command “catchsegv
./bin/shader_runner_gles3 shaders/sample.shader_test”).
void main()
{
for(
int _injected_loop_counter = 0;
1 != int((injectionSwitch.y));
1
)
{
if(gl_FragCoord.y < 0.0)
{
return;
}
}
do
{
_GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
if(gl_FragCoord.x < 0.0)
{
discard;
}
}
while(0.0 > injectionSwitch.y);
}
[test]
uniform vec2 injectionSwitch 0.0 1.0
draw rect -1 -1 2 2
Steps to reproduce:
-------------------------------------------------------------------------------
1. Obtain and build piglit, the Mesa OpenGL test suite runner:
<a href="https://gitlab.freedesktop.org/mesa/piglit">https://gitlab.freedesktop.org/mesa/piglit</a>
2. Download the attached archive.
3. From a terminal, execute the supplied tests with the piglit GLES3 shader
runner:
$ bin/shader_runner_gles3 result.shader_test
Build & PC specs:
-------------------------------------------------------------------------------
CPU: Intel Core i7-2860QM
GPU: Intel Sandybridge Mobile
OS: Ubuntu 18.04.2 LTS
libdrm: git-46cb2aa1ede16380df2d965ca125d855c4278823 (most recent as of this
writing)
Mesa: git-d19fe5e67a3945582448748c72b10fd5029d2ed5 (most recent as of this
writing)
Linux kernel version: 4.18.0-20-generic
This bug was found with GraphicsFuzz: <a href="https://github.com/google/graphicsfuzz">https://github.com/google/graphicsfuzz</a></pre>
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