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Summary:ASTERISK-12584: ztdummy gives unresolved symbols on Linux kernel 2.6.26.1
Reporter:Alex Shupikov (ssh)Labels:
Date Opened:2008-08-15 08:35:42Date Closed:2011-06-07 14:07:51
Priority:MinorRegression?No
Status:Closed/CompleteComponents:Core/General
Versions:Frequency of
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Description:zaptel (svn revision: 4487), linux 2.6.26.1 SMP

#modprobe ztdummy
FATAL: Error inserting ztdummy (/lib/modules/2.6.26.1/misc/ztdummy.ko): Unknown symbol in module, or unknown parameter (see dmesg)

# tail -f /var/log/messages
Aug 16 00:39:21 ssh2 kernel: ztdummy: Unknown symbol rtc_register
Aug 16 00:39:21 ssh2 kernel: ztdummy: Unknown symbol rtc_unregister
Aug 16 00:39:21 ssh2 kernel: ztdummy: Unknown symbol rtc_control


****** ADDITIONAL INFORMATION ******

#lsmod:
rtc_core               12508  0
rtc_lib                 2304  1 rtc_core
zaptel                183616  0
crc_ccitt               1856  1 zaptel
...
Comments:By: Tzafrir Cohen (tzafrir) 2008-08-28 08:33:57

Those are from rtc . But why use RTC on kernel 2.6.26 ? Maybe you need to modprobe rather than insmod? load the module rtc?

Don't you have CONFIG_HIGH_RES_TIMERS set? What's the output of:

 strings ztdummy.ko | grep source:
By: Alex Shupikov (ssh) 2008-08-28 08:43:58

#insmod ztdummy.ko
insmod: error inserting 'ztdummy.ko': -1 Unknown symbol in module

from syslog:
Aug 29 00:49:06 ssh2 kernel: ztdummy: Unknown symbol rtc_register                                                                                                    
Aug 29 00:49:06 ssh2 kernel: ztdummy: Unknown symbol rtc_unregister                                                                                                  
Aug 29 00:49:06 ssh2 kernel: ztdummy: Unknown symbol rtc_control

# strings ztdummy.ko | grep source:
%s (source: RTC) %d
By: Tzafrir Cohen (tzafrir) 2008-08-28 09:00:18

Let me reiterate:

> Those are from rtc . But why use RTC on kernel 2.6.26 ?
> Maybe you need to modprobe rather than insmod? load the module rtc?
By: Alex Shupikov (ssh) 2008-08-29 22:21:05

Settings CONFIG_HIGH_RES_TIMERS=y in .config my kernel solved the problem.
Sorry.