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authorGerald Carter <jerry@samba.org>2003-10-10 16:21:39 +0000
committerGerald Carter <jerry@samba.org>2003-10-10 16:21:39 +0000
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-<chapter id="bugreport">
-
-<chapterinfo>
- &author.jht;
- &author.jelmer;
- &author.tridge;
- <pubdate> 27 June 1997 </pubdate>
-</chapterinfo>
-
-<title>Reporting Bugs</title>
-
-<sect1>
-<title>Introduction</title>
-
-<para>Please report bugs using Samba's
-<ulink url="https://bugzilla.samba.org/">Bugzilla</ulink> facilities and
-take the time to read this file before you submit a bug
-report. Also, check to see if it has changed between releases, as we
-may be changing the bug reporting mechanism at some point.
-</para>
-
-<para>
-Please do as much as you can yourself to help track down the
-bug. Samba is maintained by a dedicated group of people who volunteer
-their time, skills and efforts. We receive far more mail than
-we can possibly answer, so you have a much higher chance of a response
-and a fix if you send us a <quote>developer friendly</quote> bug report that lets
-us fix it fast.
-</para>
-
-<para>
-Do not assume that if you post the bug to the comp.protocols.smb
-newsgroup or the mailing list that we will read it. If you suspect that your
-problem is not a bug but a configuration problem, it is better to send
-it to the Samba mailing list, as there are thousands of other users on
-that list who may be able to help you.
-</para>
-
-<para>
-You may also like to look though the recent mailing list archives,
-which are conveniently accessible on the Samba Web pages
-at <ulink noescape="1" url="http://samba.org/samba/">http://samba.org/samba/</ulink>.
-</para>
-
-</sect1>
-
-<sect1>
-<title>General Information</title>
-
-<para>
-Before submitting a bug report, check your config for silly
-errors. Look in your log files for obvious messages that tell
-you've misconfigured something. Run testparm to check your config
-file for correct syntax.
-</para>
-
-<para>
-Have you looked through <link linkend="diagnosis"/>? This is extremely important.
-</para>
-
-<para>
-If you include part of a log file with your bug report, then be sure to
-annotate it with exactly what you were doing on the client at the
-time and exactly what the results were.
-</para>
-
-</sect1>
-
-<sect1>
-<title>Debug Levels</title>
-
-<para>
-If the bug has anything to do with Samba behaving incorrectly as a
-server (like refusing to open a file), then the log files will probably
-be quite useful. Depending on the problem, a log level of between 3 and
-10 showing the problem may be appropriate. A higher level gives more
-detail, but may use too much disk space.
-</para>
-
-<para>
-To set the debug level, use the <smbconfoption><name>log level</name></smbconfoption> in your
-&smb.conf;. You may also find it useful to set the log
-level higher for just one machine and keep separate logs for each machine.
-To do this, add the following lines to your main &smb.conf; file:
-</para>
-
-<para><smbconfblock>
-<smbconfoption><name>log level</name><value>10</value></smbconfoption>
-<smbconfoption><name>log file</name><value>/usr/local/samba/lib/log.%m</value></smbconfoption>
-<smbconfoption><name>include</name><value>/usr/local/samba/lib/smb.conf.%m</value></smbconfoption>
-</smbconfblock></para>
-
-<para>
-and create a file <filename>/usr/local/samba/lib/smb.conf.<replaceable>machine</replaceable></filename> where
-<replaceable>machine</replaceable> is the name of the client you wish to debug. In that file
-put any &smb.conf; commands you want, for example
-<smbconfoption><name>log level</name></smbconfoption> may be useful. This also allows you to
-experiment with different security systems, protocol levels and so on, on just
-one machine.
-</para>
-
-<para>
-The &smb.conf; entry <smbconfoption><name>log level</name></smbconfoption>
-is synonymous with the parameter <smbconfoption><name>debuglevel</name></smbconfoption> that has
-been used in older versions of Samba and is being retained for backward
-compatibility of &smb.conf; files.
-</para>
-
-<para>
-As the <smbconfoption><name>log level</name></smbconfoption> value is increased, you will record
-a significantly greater level of debugging information. For most
-debugging operations, you may not need a setting higher than
-<constant>3</constant>. Nearly
-all bugs can be tracked at a setting of <constant>10</constant>, but be
-prepared for a large volume of log data.
-</para>
-
-</sect1>
-
-<sect1>
-<title>Internal Errors</title>
-
-<para>
-If you get the message <quote><errorname>INTERNAL ERROR</errorname></quote> in your log files,
-it means that Samba got an unexpected signal while running. It is probably a
-segmentation fault and almost certainly means a bug in Samba (unless
-you have faulty hardware or system software).
-</para>
-
-<para>
-If the message came from smbd, it will probably be accompanied by
-a message that details the last SMB message received by smbd. This
-information is often useful in tracking down the problem so please
-include it in your bug report.
-</para>
-
-<para>
-You should also detail how to reproduce the problem, if
-possible. Please make this reasonably detailed.
-</para>
-
-
-<para>
-<indexterm><primary>core files</primary></indexterm>
-You may also find that a core file appeared in a <filename>corefiles</filename>
-subdirectory of the directory where you keep your Samba log
-files. This file is the most useful tool for tracking down the bug. To
-use it, you do this:
-<indexterm><primary>gdb</primary></indexterm>
-<indexterm><primary>debug</primary></indexterm>
-</para>
-
-
-<screen>
-&prompt;<userinput>gdb smbd core</userinput>
-</screen>
-
-<para>
-adding appropriate paths to smbd and core so gdb can find them. If you
-do not have gdb, try <userinput>dbx</userinput>. Then within the debugger,
-use the command <command>where</command> to give a stack trace of where the
-problem occurred. Include this in your report.
-</para>
-
-<para>
-If you know any assembly language, do a <command>disass</command> of the routine
-where the problem occurred (if its in a library routine, then
-disassemble the routine that called it) and try to work out exactly
-where the problem is by looking at the surrounding code. Even if you
-do not know assembly, including this information in the bug report can be
-useful.
-</para>
-</sect1>
-
-<sect1>
-<title>Attaching to a Running Process</title>
-
-<para>
-Unfortunately, some UNIXes (in particular some recent Linux kernels)
-refuse to dump a core file if the task has changed uid (which smbd
-does often). To debug with this sort of system, you could try to attach
-to the running process using
-<userinput>gdb smbd <replaceable>PID</replaceable></userinput> where you get
-<replaceable>PID</replaceable> from <application>smbstatus</application>.
-Then use <command>c</command> to continue and try to cause the core dump
-using the client. The debugger should catch the fault and tell you
-where it occurred.
-</para>
-
-</sect1>
-
-<sect1>
-<title>Patches</title>
-
-
-<para>
-<indexterm><primary>diff</primary></indexterm>
-<indexterm><primary>patch</primary></indexterm>
-The best sort of bug report is one that includes a fix! If you send us
-patches, please use <userinput>diff -u</userinput> format if your version of
-diff supports it, otherwise use <userinput>diff -c4</userinput>. Make sure
-you do the diff against a clean version of the source and let me know
-exactly what version you used.
-</para>
-
-</sect1>
-</chapter>