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1.12      tb          1: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
1.1       beck        2: <html>
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1.10      tj          4: <title>OpenBSD: Crash Reports</title>
1.1       beck        5: <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
                      6: <meta name="description" content="How to report an OpenBSD kernel crash">
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1.1       beck       11: </head>
                     12:
                     13: <body bgcolor="#ffffff" text="#000000" link="#23238e">
1.9       tb         14:
                     15: <h2>
                     16: <a href="index.html">
                     17: <font color="#0000ff"><i>Open</i></font><font color="#000084">BSD</font></a>
1.10      tj         18: <font color="#e00000">Crash Reports</font>
1.9       tb         19: </h2>
                     20: <hr>
1.1       beck       21: <p>
                     22:
                     23: <h3><font color="#0000e0">Minimum information for kernel problems</font></h3>
                     24:
1.6       tb         25: Familiarize yourself with
                     26: <a href="report.html">the general bug reporting procedures</a>
                     27: first.
                     28: All of that will apply.
1.1       beck       29: When reporting a kernel panic or crash, please remember:
                     30:
                     31: <ul>
1.6       tb         32: <li><em>We need the console output on the screen</em>.
                     33:        Capture it and save it.
                     34:        Serial consoles are best, but if you are on a VGA console you can
1.12      tb         35:        <a HREF="faq/faq7.html">scroll the console back</a>
1.6       tb         36:        and take readable pictures with a phone or camera.<BR>
                     37:
                     38: <li><em>If the kernel panicked we need the traceback.</em>
                     39:        It may be displayed on the screen.
                     40:        If you are at a
1.12      tb         41:        <tt><a href="http://man.openbsd.org/ddb.4">ddb</a>&gt;</tt>
1.6       tb         42:        prompt, type <tt>trace</tt>.
                     43:        If you are running SMP, use the <tt>mach ddbcpu N</tt> command for each
                     44:        of the <tt>N</tt> processors you have and repeat the <tt>trace</tt>
                     45:        command for each processor.<BR>
1.1       beck       46:
1.6       tb         47: <li><em>We need the process list.</em>
                     48:        Use the command <tt>ps</tt> to get us that.
1.1       beck       49: </ul>
                     50:
1.6       tb         51: <em>
                     52:        Reports without the above information are useless.
                     53:        This is the minimum we need to be able to track down the issue.
                     54: </em>
1.1       beck       55:
                     56: <h3><font color="#0000e0">Additional information you can send</font></h3>
                     57: <P>
1.6       tb         58: In some situations more information is desirable.
                     59: Below are outlined some additional steps you can take in certain situations:
1.1       beck       60: <ul>
1.3       beck       61: <li> ... XXX boot crash? XXX
                     62: <li> ... XXX show regs? XXX
1.6       tb         63: <li> <em>If your crash appears to involve filesystems.</em>
                     64:        The following additional things would be helpful
1.3       beck       65: <ul>
1.6       tb         66: <li> The output of the
1.12      tb         67:        <tt><a href="http://man.openbsd.org/ddb.4">ddb</a>&gt;</tt>
1.6       tb         68:        command <tt>show uvm</tt>
                     69: <li> The output of the
1.12      tb         70:        <tt><a href="http://man.openbsd.org/ddb.4">ddb</a>&gt;</tt>
1.6       tb         71:        command <tt>show bcstats</tt>
                     72: <li> The output of the <tt>mount</tt> command from your running machine,
                     73:        so we know what filesystems are mounted and how.
1.3       beck       74: </ul>
1.1       beck       75: </ul>
                     76:
                     77: <p>
                     78: </body>
                     79: </html>