Summary:ASTERISK-05096: ztdummy throwing error on kernel
Reporter:Denis Voitenko (denis)Labels:
Date Opened:2005-09-15 15:04:19Date Closed:2008-06-07 11:07:52
Versions:Frequency of
Environment:Attachments:( 0) README.diff
Description:on a box running kernel zaptel is installed as follows:

cd zaptel
make clean
make linux26
make install
depmod -a
modprobe zaptel
modprobe ztdummy

FATAL: Error inserting ztdummy (/lib/modules/ Unknown symbol in module, or unknown parameter (see dmesg)
FATAL: Error running install command for ztdummy
Comments:By: Denis Voitenko (denis) 2005-09-15 15:04:55

/var/log/dmesg shows the exact error: FATAL: Error inserting ztdummy (/lib/modules/ Unknown symbol in module, or unknown parameter

By: Kevin P. Fleming (kpfleming) 2005-09-15 16:47:18

I just upgraded one of my test systems to and rebuilt Zaptel from CVS HEAD. ztdummy loads without a problem.

By: Denis Voitenko (denis) 2005-09-18 15:40:37

Just upgraded my test machine to kernel and tried to compile zaptel head dated 09/18/05 and received the same problem.

FATAL: Error inserting zaptel (/lib/modules/ Unknown symbol in module, or unknown parameter.

By: Denis Voitenko (denis) 2005-09-18 15:54:55

If neccessary I'd be willing to provide access to the machine in question to help debugging this.

By: xrobau (xrobau) 2005-09-21 06:50:56

Works for me here. Denis, I suggest you jump on #asterisk on irc.freenode.net (using your favourite IRC client) and ask for help there.

By: Mark Spencer (markster) 2005-09-25 00:09:43

If you type dmesg, what is the symbol / parameter that is not known?

By: Matt O'Gorman (mogorman) 2005-10-04 12:16:12

Is this still an issue for you or can we resolve this bug denis.


By: Denis Voitenko (denis) 2005-10-04 16:34:30

My appologies for posting the entire dmesg. I am new to this. Here are the related zaptel and ztdummy errors.

zaptel: Unknown symbol crc_cc_itt_table
zaptel: Unknown symbol crc_cc_itt_table
ztdummy: Uknown symbol rtc_register
ztdummy: Uknown symbol zt_receive
ztdummy: Uknown symbol zt_transmit
ztdummy: Uknown symbol rtc_unregister
ztdummy: Uknown symbol zt_unregister
ztdummy: Uknown symbol rtc_control

By: Kevin P. Fleming (kpfleming) 2005-10-04 18:42:33

Please don't send large amounts of text as bug notes; they should be uploaded as attachments. For the reason why, look at your note: it's cut off long before any Zaptel modules get loaded.

We also don't need the entire dmesg log, just the part containing the loading error for Zaptel.

By: Denis Voitenko (denis) 2005-10-05 14:24:35

To add to this, this is is a Slackware 10.2 install that originally came with a 2.4 kernel and I have upgraded it to I have /usr/src/linux- symlinked to /usr/src/linux

When I am running make linux26 I do see it compiling against the right headers:

make -C /usr/lib/ SUBDIRS=/usr/src/zaptel modules

By: Denis Voitenko (denis) 2005-10-10 18:39:16

Apparently this error is caused by CONFIG_CRC_CCITT not being set to Yes in the kernel. This requires the kernel to be recompiled.

I am not sure how possible it is to check for this during the make process but it would have been nice to see some sort of a warning.

By: Denis Voitenko (denis) 2005-10-10 18:50:14

I attached a diff of zaptel/README that describes the problem and provives a quick guideline to fixing it.

By: grooby (grooby) 2005-10-11 10:16:58

I am running 2.6.13-gentoo-r3 and I am still having this problem after enabling the CONGIF_CRC_CCITT.

After goofing around and googling more, I realize I need to enable RTC in my kernel.

By: Olle Johansson (oej) 2005-10-25 09:41:15

The documentation patch is ready for cvs. After that, let's close this bug report.

Do we need a disclaimer for this patch? Denis, do you have a disclaimer on file?

Thank you, denis!


By: Kevin P. Fleming (kpfleming) 2005-10-31 17:36:18.000-0600

Committed to CVS HEAD, thanks!

By: Digium Subversion (svnbot) 2008-06-07 11:07:52

Repository: dahdi
Revision: 802

U   trunk/README

r802 | kpfleming | 2008-06-07 11:07:51 -0500 (Sat, 07 Jun 2008) | 2 lines

add documentation about kernel compilation requiring CRC-CCITT support (issue ASTERISK-5096)