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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - invalid reads from brw::vec4_visitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81379">81379</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>invalid reads from brw::vec4_visitor
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>critical
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>lemody@gmail.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Component</th>
<td>Drivers/DRI/i965
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr></table>
<p>
<div>
<pre>==20519== Invalid read of size 4
==20519== at 0x5B7F704: brw::vec4_visitor::opt_cse_local(bblock_t*,
exec_list*) (brw_vec4_cse.cpp:229)
==20519== by 0x5B7FA15: brw::vec4_visitor::opt_cse() (brw_vec4_cse.cpp:265)
==20519== by 0x5B7E6E3: brw::vec4_visitor::run() (brw_vec4.cpp:1681)
==20519== by 0x5B7E8A6: brw_vs_emit (brw_vec4.cpp:1757)
==20519== by 0x5B97088: do_vs_prog (brw_vs.c:293)
==20519== by 0x5B979AD: brw_vs_precompile (brw_vs.c:542)
==20519== by 0x5B76E84: brw_link_shader (brw_shader.cpp:79)
==20519== by 0x5A65045: _mesa_glsl_link_shader (ir_to_mesa.cpp:3082)
==20519== by 0x596EE49: link_program (shaderapi.c:915)
==20519== by 0x4047E5: init(gfxinfo_t*, void*) (in
/home/tpalli/test_animation)
==20519== by 0x403A8A: TestApplication::exec(unsigned int) (in
/home/tpalli/test_animation)
==20519== by 0x404B88: main (in /home/tpalli/test_animation)
==20519== Address 0x69c2408 is 16 bytes after a block of size 40 alloc'd
==20519== at 0x4A081D4: calloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20519== by 0x5B07781: ralloc_size (ralloc.c:113)
==20519== by 0x5B27AB5: cfg_t::cfg_t(exec_list*) (brw_cfg.cpp:89)
==20519== by 0x5B84A80: brw::vec4_visitor::calculate_live_intervals()
(brw_vec4_live_variables.cpp:251)
==20519== by 0x5B7C51A: brw::vec4_visitor::dead_code_eliminate()
(brw_vec4.cpp:366)
==20519== by 0x5B7E6AF: brw::vec4_visitor::run() (brw_vec4.cpp:1677)
==20519== by 0x5B7E8A6: brw_vs_emit (brw_vec4.cpp:1757)
==20519== by 0x5B97088: do_vs_prog (brw_vs.c:293)
==20519== by 0x5B979AD: brw_vs_precompile (brw_vs.c:542)
==20519== by 0x5B76E84: brw_link_shader (brw_shader.cpp:79)
==20519== by 0x5A65045: _mesa_glsl_link_shader (ir_to_mesa.cpp:3082)
==20519== by 0x596EE49: link_program (shaderapi.c:915)</pre>
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