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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">On 6 different Windows 2016 servers we have been running Shibboleth SP version 3.1.0.2 for over a year and it has been rock stable.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">A week ago we upgraded 2 of the servers to version 3.2.3.1 with shibboleth-sp-3.2.3.1-win64.msi (no other configuration changes). Initially this worked fine but on both servers
shibd.exe has crashed since.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">On one server the Shibboleth service crashed after about 4 days, on the other server after about 7 days. Simply starting the service again restored functionality.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">I happen to have logging set to DEBUG and it seems the crash is in the automatic reloading of metadata: with all crashes the last line in shibd.log is something like<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">2021-11-11 17:18:17 DEBUG OpenSAML.MetadataProvider.XML : writing to backing file: C:/opt/shibboleth-sp/var/cache/shibboleth/metadata-kfsg-oud.xml.a05e<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">And it is *<b>not</b>* followed by something like ‘2021-11-11 21:32:53 DEBUG XMLTooling.util.CloneInputStream : initialized’<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">The crash seems to happen before the “XMLTooling.util.CloneInputStream”<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">I was able to capture a crash memory dump:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Unhandled exception at 0x00007FFCDF357143 (ntdll.dll) in memory.hdmp: 0xC0000374: A heap has been corrupted (parameters: 0x00007FFCDF3AD6B0).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Stack trace:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> ntdll.dll!RtlReportCriticalFailure‑() Unknown<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">> ntdll.dll!RtlpHeapHandleError‑() Unknown<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> ntdll.dll!RtlpLogHeapFailure‑() Unknown<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> ntdll.dll!RtlFreeHeap‑() Unknown<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> [Frames may be missing, no binary loaded for ucrtbase.dll]
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> ucrtbase.dll!00007ffcdb8ade0b() Unknown<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Does this information help to pinpoint the source of the crash?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Jos Groot Lipman<o:p></o:p></span></p>
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