<p>It seems that the core of the process that crashed was overwritten at shutdown. Can you enable core file per pid with the next command:</p>
<pre><code>echo "1" > /proc/sys/kernel/core_uses_pid
</code></pre>
<p>Then reproduce the case. You should get more core files, each with the pid number in the name. Take the bt for every core file and paste them here.</p>

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