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authorGerald Carter <jerry@samba.org>2002-10-02 14:08:40 +0000
committerGerald Carter <jerry@samba.org>2002-10-02 14:08:40 +0000
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<HTML
+><HEAD
+><TITLE
+>Reporting Bugs</TITLE
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+><DIV
+CLASS="CHAPTER"
+><H1
+><A
+NAME="BUGREPORT">Chapter 19. Reporting Bugs</H1
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="AEN3029">19.1. Introduction</H1
+><P
+>The email address for bug reports is samba@samba.org</P
+><P
+>Please take the time to read this file before you submit a bug
+report. Also, please see if it has changed between releases, as we
+may be changing the bug reporting mechanism at some time.</P
+><P
+>Please also 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 about it than
+we can possibly answer, so you have a much higher chance of an answer
+and a fix if you send us a "developer friendly" bug report that lets
+us fix it fast. </P
+><P
+>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 then it is better to send
+it to the Samba mailing list, as there are (at last count) 5000 other users on
+that list that may be able to help you.</P
+><P
+>You may also like to look though the recent mailing list archives,
+which are conveniently accessible on the Samba web pages
+at http://samba.org/samba/ </P
+></DIV
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="AEN3036">19.2. General info</H1
+><P
+>Before submitting a bug report check your config for silly
+errors. Look in your log files for obvious messages that tell you that
+you've misconfigured something and run testparm to test your config
+file for correct syntax.</P
+><P
+>Have you run through the <A
+HREF="Diagnosis.html"
+TARGET="_top"
+>diagnosis</A
+>?
+This is very important.</P
+><P
+>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.</P
+></DIV
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="AEN3042">19.3. Debug levels</H1
+><P
+>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 very useful. Depending on the problem a log level of between 3 and
+10 showing the problem may be appropriate. A higher level givesmore
+detail, but may use too much disk space.</P
+><P
+>To set the debug level use <B
+CLASS="COMMAND"
+>log level =</B
+> in your
+<TT
+CLASS="FILENAME"
+>smb.conf</TT
+>. 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 use:</P
+><P
+><PRE
+CLASS="PROGRAMLISTING"
+>log level = 10
+log file = /usr/local/samba/lib/log.%m
+include = /usr/local/samba/lib/smb.conf.%m</PRE
+></P
+><P
+>then create a file
+<TT
+CLASS="FILENAME"
+>/usr/local/samba/lib/smb.conf.machine</TT
+> where
+"machine" is the name of the client you wish to debug. In that file
+put any smb.conf commands you want, for example
+<B
+CLASS="COMMAND"
+>log level=</B
+> may be useful. This also allows you to
+experiment with different security systems, protocol levels etc on just
+one machine.</P
+><P
+>The <TT
+CLASS="FILENAME"
+>smb.conf</TT
+> entry <B
+CLASS="COMMAND"
+>log level =</B
+>
+is synonymous with the entry <B
+CLASS="COMMAND"
+>debuglevel =</B
+> that has been
+used in older versions of Samba and is being retained for backwards
+compatibility of smb.conf files.</P
+><P
+>As the <B
+CLASS="COMMAND"
+>log level =</B
+> value is increased you will record
+a significantly increasing level of debugging information. For most
+debugging operations you may not need a setting higher than 3. Nearly
+all bugs can be tracked at a setting of 10, but be prepared for a VERY
+large volume of log data.</P
+></DIV
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="AEN3059">19.4. Internal errors</H1
+><P
+>If you get a "INTERNAL ERROR" message 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)</P
+><P
+>If the message came from smbd then it will probably be accompanied by
+a message which details the last SMB message received by smbd. This
+info is often very useful in tracking down the problem so please
+include it in your bug report.</P
+><P
+>You should also detail how to reproduce the problem, if
+possible. Please make this reasonably detailed.</P
+><P
+>You may also find that a core file appeared in a "corefiles"
+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:</P
+><P
+><B
+CLASS="COMMAND"
+>gdb smbd core</B
+></P
+><P
+>adding appropriate paths to smbd and core so gdb can find them. If you
+don't have gdb then try "dbx". Then within the debugger use the
+command "where" to give a stack trace of where the problem
+occurred. Include this in your mail.</P
+><P
+>If you known any assembly language then do a "disass" 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
+don't know assembly then incuding this info in the bug report can be
+useful. </P
+></DIV
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="AEN3069">19.5. Attaching to a running process</H1
+><P
+>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 "gdb smbd PID" where you get PID from
+smbstatus. Then use "c" to continue and try to cause the core dump
+using the client. The debugger should catch the fault and tell you
+where it occurred.</P
+></DIV
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="AEN3072">19.6. Patches</H1
+><P
+>The best sort of bug report is one that includes a fix! If you send us
+patches please use <B
+CLASS="COMMAND"
+>diff -u</B
+> format if your version of
+diff supports it, otherwise use <B
+CLASS="COMMAND"
+>diff -c4</B
+>. Make sure
+your do the diff against a clean version of the source and let me know
+exactly what version you used. </P
+></DIV
+></DIV
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