<p></p>
<p>I guess that was Ubuntu 18 indeed, on Ubuntu 16 I've never seen anything other than 1.0.2. See <a href="https://packages.ubuntu.com/search?keywords=libssl&searchon=names&suite=xenial&section=all" rel="nofollow">https://packages.ubuntu.com/search?keywords=libssl&searchon=names&suite=xenial&section=all</a></p>
<p>I can confirm that after downgrading libmysqlclient20 to <code>5.7.26-0ubuntu0.16.04.1</code> the problem seems to be gone - at the very least my sipp stress test no longer manages to cause any deadlocks.</p>

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