High CPU usage when a specific log appear

[wumingwuan]

error-2023-01-03031327Z-82e00bfb-6139-4f2b-959d-3ac743d40669.zip

Our server facing high CPU usage(maybe infinite loop) when a specific log appear.
elmah/api/new-errors?id will pending and never end.

just unzip and put that xml to log folder will reproduce the problem.
elmahcore version : v2.1.2

[cvocvo]

Also running into this; only a server reboot seems to fix it.

Edit: moving to this for now (has the fix merged in): https://github.com/ElmahCoreEx/ElmahCoreEx
https://www.nuget.org/packages/ElmahCoreEx/

Edit2: That fixed CPU it seems but left a memory leak issue when we went to elmah/api/new-errors?{id}
So our workaround was just to add a URL rewrite rule: (the 200 status code response prevents frontend errors from showing up)

<configuration>
  <system.webServer>
    <rewrite>
      <rules>
        <rule name="Abort Requests for /elmah/api/new-errors" stopProcessing="true">
          <match url="^elmah/api/new-errors$" />
          <conditions>
            <add input="{QUERY_STRING}" pattern="^id=" />
          </conditions>
          <action type="CustomResponse" statusCode="200" subStatusCode="0" statusReason="OK" statusDescription="OK" />
        </rule>
      </rules>
    </rewrite>
  </system.webServer>
</configuration>

Edit3: ElmahCoreEx/ElmahCoreEx#4