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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 - System freeze while creating a lot of network traffic when using Intel Inference Engine with OpenCL"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110334">110334</a>
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<th>Summary</th>
<td>System freeze while creating a lot of network traffic when using Intel Inference Engine with OpenCL
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>critical
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>t.senfter@accessio.at
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=143875" name="attach_143875" title="additional information and alternative scripts for the zombie Docker image">attachment 143875</a> <a href="attachment.cgi?id=143875&action=edit" title="additional information and alternative scripts for the zombie Docker image">[details]</a></span>
additional information and alternative scripts for the zombie Docker image
We observe a "zombie" mode when running CNNs using the Intel Inference Engine
with OpenCL. In this "zombie" mode the system does not react to anything
(nothing when pressing Power OFF (except for 5 seconds obviously) and no
reaction to Magic SysRq key), but it creates a lot of network traffic (enough
to take down a 100Mbit switch). More details can be found here:
<a href="https://software.intel.com/en-us/comment/1933685#comment-1933685">https://software.intel.com/en-us/comment/1933685#comment-1933685</a>
Affected hardware:
- NUC7BNH with Intel i3-7100U
- NUC7DNH with Intel i7-7567U
- NUC8BEH with either Intel i3-8109U or Intel i5-8259U
Affected kernels:
- 4.7.0.intel.r5.0-1
- 4.15.18-041518-generic
- 4.19.31-041931-generic
There is not much to be found in the logs (syslog and kern.log from boot to
freeze are attached).
The problem occurs randomly and not very frequent with our software (with about
10 systems running we get the freeze maybe once a week). However we could
create a Docker image which triggers the problem usually within a few minutes
on kernel 4.7.0.intel.r5.0-1.
The Docker image can be found here: <a href="https://hub.docker.com/r/accessio/zombie">https://hub.docker.com/r/accessio/zombie</a>
An archive with additional information and alternative scripts is attached.</pre>
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