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version 1.18, 2017/02/06 18:55:43

version 1.19, 2017/06/26 17:18:57

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<li><i>If the kernel panicked we need the traceback.</i>

<li><i>If the kernel panicked we need the traceback.</i>

It may be displayed on the screen.

It may be displayed on the screen.

If you are at a

If you are at a

<tt><a href="http://man.openbsd.org/ddb.4">ddb</a>></tt>

<tt><a href="https://man.openbsd.org/ddb.4">ddb</a>></tt>

prompt, type <tt>trace</tt>.

prompt, type <tt>trace</tt>.

If you are running SMP, use the <tt>mach ddbcpu N</tt> command for each

If you are running SMP, use the <tt>mach ddbcpu N</tt> command for each

of the <tt>N</tt> processors you have and repeat the <tt>trace</tt>

of the <tt>N</tt> processors you have and repeat the <tt>trace</tt>

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The following additional things would be helpful

The following additional things would be helpful

<ul>

<ul>

<li>The output of the

<li>The output of the

<tt><a href="http://man.openbsd.org/ddb.4">ddb</a>></tt> command

<tt><a href="https://man.openbsd.org/ddb.4">ddb</a>></tt> command

<tt>show uvm</tt>

<tt>show uvm</tt>

<li>The output of the

<li>The output of the

<tt><a href="http://man.openbsd.org/ddb.4">ddb</a>></tt>

<tt><a href="https://man.openbsd.org/ddb.4">ddb</a>></tt>

command <tt>show bcstats</tt>

command <tt>show bcstats</tt>

<li>The output of the <tt>mount</tt> command from your running machine, so

<li>The output of the <tt>mount</tt> command from your running machine, so

we know what filesystems are mounted and how.

we know what filesystems are mounted and how.

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Line 134

<p>

<p>

The first command to run from the

The first command to run from the

<a href="http://man.openbsd.org/ddb">ddb(4)</a> prompt is <tt>trace</tt>:

<a href="https://man.openbsd.org/ddb">ddb(4)</a> prompt is <tt>trace</tt>:

<blockquote><pre>

<blockquote><pre>

ddb> <b>trace</b>

ddb> <b>trace</b>

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<p>

<p>

Find the source file where the crashing function is defined.

Find the source file where the crashing function is defined.

In this example, that would be <tt>pf_route()</tt> in <tt>/sys/net/pf.c</tt>.

In this example, that would be <tt>pf_route()</tt> in <tt>/sys/net/pf.c</tt>.

Use <a href="http://man.openbsd.org/objdump">objdump(1)</a> to get the

Use <a href="https://man.openbsd.org/objdump">objdump(1)</a> to get the

disassembly:

disassembly:

<blockquote><pre>

<blockquote><pre>