Content-Transfer-Encoding: quoted-printable
content-type: text/html; charset="utf-8"
X-RT-Original-Encoding: utf-8
Content-Length: 3141

<div dir="ltr">Heyo! In our apache/httpd instances, we&#39;re regularly seeing the following cause segfaults:<br><br><span id="gmail-docs-internal-guid-1a6ff0c7-7fff-df08-0f23-ad9b0fb40890"><span style="font-size:11pt;font-family:Consolas,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;vertical-align:baseline;white-space:pre-wrap">httpd: threads.c:395: krb5int_key_delete: Assertion `destructors_set[keynum] == 1&#39; failed.</span></span><br><div><span><span style="font-size:11pt;font-family:Consolas,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;vertical-align:baseline;white-space:pre-wrap">
We don&#39;t directly utilize krb5, but the library is pulled in by a few transient dependencies.</span></span></div><div><font color="#000000" face="Consolas, sans-serif"><span style="font-size:14.6667px;white-space:pre-wrap">After digging around on the net, it seems we aren&#39;t alone: </span></font><a href="https://stackoverflow.com/questions/54213685/apache-seg-fault-krb5int-key-delete-assertion-destructors-setkeynum-1-fail">https://stackoverflow.com/questions/54213685/apache-seg-fault-krb5int-key-delete-assertion-destructors-setkeynum-1-fail</a><br><br>I tried to dump all apache modules that could be loading libkrb5 and came up with...<br><pre class="gmail-c-mrkdwn__pre" style="box-sizing:inherit;margin-top:4px;margin-bottom:4px;padding:8px;font-size:12px;line-height:1.50001;font-variant-ligatures:none;white-space:pre-wrap;word-break:normal;border-radius:4px;font-family:Monaco,Menlo,Consolas,&quot;Courier New&quot;,monospace"><font color="#000000">/etc/httpd/modules/libphp7.so<span style="box-sizing:inherit"><br style="box-sizing:inherit"></span>	libkrb5.so.3 =&gt; /lib64/libkrb5.so.3 (0x00007f4f35f65000)<span style="box-sizing:inherit"><br style="box-sizing:inherit"></span>	libkrb5support.so.0 =&gt; /lib64/libkrb5support.so.0 (0x00007f4f34839000)<span style="box-sizing:inherit"><br style="box-sizing:inherit"></span>/etc/httpd/modules/libphp7-zts.so<span style="box-sizing:inherit"><br style="box-sizing:inherit"></span>	libkrb5.so.3 =&gt; /lib64/libkrb5.so.3 (0x00007ff228114000)<span style="box-sizing:inherit"><br style="box-sizing:inherit"></span>	libkrb5support.so.0 =&gt; /lib64/libkrb5support.so.0 (0x00007ff226c04000)<span style="box-sizing:inherit"><br style="box-sizing:inherit"></span>/etc/httpd/modules/mod_ssl.so<span style="box-sizing:inherit"><br style="box-sizing:inherit"></span>	libkrb5.so.3 =&gt; /lib64/libkrb5.so.3 (0x00007f0c0c7fa000)<span style="box-sizing:inherit"><br style="box-sizing:inherit"></span>	libkrb5support.so.0 =&gt; /lib64/libkrb5support.so.0 (0x00007f0c0bf9d000)</font></pre><pre class="gmail-c-mrkdwn__pre" style="box-sizing:inherit;margin-top:4px;margin-bottom:4px;padding:8px;font-size:12px;line-height:1.50001;font-variant-ligatures:none;white-space:pre-wrap;word-break:normal;border-radius:4px;font-family:Monaco,Menlo,Consolas,&quot;Courier New&quot;,monospace">Any thoughts on a potential solution or cause?<br></pre></div></div>