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    <font size="-1" face="Calibri,sans-serif">We tried to use only the
      e1000e driver for kernel 4.9.80 and no other patches. Additionaly
      we tried the e1000e driver <br>
      for kernel 3.18.22 with rtai 5.0. The problem remains the same in
      both cases.<br>
      <br>
      There is no output to the syslog when the system freezes.<br>
      <br>
    </font>
    <div class="moz-cite-prefix">On 26.09.2018 02:46, Gavin Lambert
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:AM4PR0302MB28209AE5E29D881832BDD091E8150@AM4PR0302MB2820.eurprd03.prod.outlook.com">
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        <p class="MsoNormal"><span
            style="color:windowtext;mso-fareast-language:EN-US">One of
            the first things you should try is to triage the patches by
            rolling them back and then adding them one at a time and
            testing until you find which patch appears to introduce the
            problem (or whether it exists in the baseline without any
            patches).  In most cases you can then try skipping that
            patch and applying subsequent ones until you find more
            problematic patches or you successfully apply the remainder.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="color:windowtext;mso-fareast-language:EN-US">Please
            share your findings so that we know where to look for the
            culprit.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="color:windowtext;mso-fareast-language:EN-US">(Also,
            if it manages to write some information to the syslog before
            freezing then that could be helpful.)<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
            style="color:windowtext;mso-fareast-language:EN-US">FWIW,
            I’ve been using PREEMPT_RT kernel 4.9.51 with e1000e for a
            long while without issues.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
            style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <div style="border:none;border-left:solid blue 1.5pt;padding:0cm
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          <div>
            <div style="border:none;border-top:solid #E1E1E1
              1.0pt;padding:3.0pt 0cm 0cm 0cm">
              <p class="MsoNormal"><b><span style="color:windowtext"
                    lang="EN-US">From:</span></b><span
                  style="color:windowtext" lang="EN-US"> René Reimann<br>
                  <b>Sent:</b> Tuesday, 25 September 2018 19:28<br>
                  <b>To:</b> Gianluca Medini
                  <a class="moz-txt-link-rfc2396E" href="mailto:gianluca.medini@gmail.com"><gianluca.medini@gmail.com></a>;
                  <a class="moz-txt-link-abbreviated" href="mailto:etherlab-users@etherlab.org">etherlab-users@etherlab.org</a><br>
                  <b>Subject:</b> Re: [etherlab-users] e1000e driver
                  freeze on kernel 4.9.80 rtai 5.1<o:p></o:p></span></p>
            </div>
          </div>
          <p class="MsoNormal"><o:p> </o:p></p>
          <p class="MsoNormal" style="margin-bottom:12.0pt">Hello,<br>
            <br>
            we are <span class="hiddenspellerror">experiencing</span>
            the same problem with <span class="hiddenspellerror">
              rtai</span> 5.1 kernel 4.9.80 and <span
              class="hiddenspellerror">rtai</span> 5.0 kernel.<br>
            The system freezes randomly after several minutes with the
            e1000e and the <span class="hiddenspellerror">
              unofficial</span> patches.<br>
            Does somebody have an <span class="hiddenspellerror">idea</span>
            how to <span class="hiddenspellerror">
              fix</span> this?<br>
            <br>
            Best Regards<br>
            <span class="hiddenspellerror">René</span> <span
              class="hiddenspellerror">Reimann</span><o:p></o:p></p>
          <div>
            <p class="MsoNormal">On 23.09.2018 22:29, Gianluca Medini
              wrote:<o:p></o:p></p>
          </div>
          <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
            <div>
              <p class="MsoNormal">Hi all, I've tested the driver e1000e
                on rtai 5.1 kernel 4.9.80.
                <o:p></o:p></p>
              <div>
                <p class="MsoNormal">I'm using Gavin Lambert unofficial
                  patches set that includes patched drivers for 4.9.80.<o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal">The system  freezes randomly after
                  some  minutes. <o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal">The Igb driver on same
                  configuration works perfectly. <o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal"><o:p> </o:p></p>
              </div>
              <div>
                <p class="MsoNormal">Someone have experienced the same
                  issue?<o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal">GM<o:p></o:p></p>
              </div>
            </div>
            <p class="MsoNormal"><br>
              <br>
              <br>
              <o:p></o:p></p>
            <pre>_______________________________________________<o:p></o:p></pre>
            <pre>etherlab-users mailing list<o:p></o:p></pre>
            <pre><a href="mailto:etherlab-users@etherlab.org" moz-do-not-send="true">etherlab-users@etherlab.org</a><o:p></o:p></pre>
            <pre><a href="https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.etherlab.org%2Fmailman%2Flistinfo%2Fetherlab-users&data=02%7C01%7Cgavin.lambert%40tomra.com%7C4e061ec02fe04622d16708d622b86ca7%7C4308d118edd143008a37cfeba8ad5898%7C0%7C0%7C636734572828494098&sdata=qwxQi92RlqOAUXDeP8LWBp7c%2FASFzSt2gRtyX9Zkleo%3D&reserved=0" moz-do-not-send="true">http://lists.etherlab.org/mailman/listinfo/etherlab-users</a><o:p></o:p></pre>
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                    <p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#353535">René
                        Reimann</span><span
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                      </span><span
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                        <o:p></o:p></span></p>
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                    <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2C2C2C">IALB
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                Wissenschaftlicher Mitarbeiter</span> </td>
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