On 01/05/2011 05:02 AM, [email protected] wrote: > Shaun Ruffell <[email protected]> wrote: > >> On 1/5/11 12:46 AM, [email protected] wrote: >>> Shaun Ruffell<[email protected]> wrote: >>> >>>> On 1/4/11 9:26 PM, [email protected] wrote: >>>>> >>>>> Shaun Ruffell<[email protected]> wrote: >>>>> >>>>>> On 01/04/2011 05:09 PM, [email protected] wrote: >>>>>>> Hi. I have a Debian Leni system with asterisk-1.8. I was trying to >>>>>>> get meetme to work and it depends on dahdi, so I compiled dahdi-trunk >>>>>>> and dahdi-tools-trunk, however, when trying to insert dahdi_dummy, it >>>>>>> complained about symbol crc_ccitt_table, although the module was >>>>>>> actually there in the kernel tree. So, I took the Debian source, and I >>>>>>> had the config and I did make Bzimage, make modules and make >>>>>>> modules_install, but dahdi_dummy still complains about the same symbol, >>>>>>> it says no version for that symbol, so I am confused as to how to >>>>>>> resolve this so I can modprobe dahdi_dummy properly. >>>>>>> >>>>>>> Any ideas would be appreciated. >>>>>>> >>>>>> >>>>>> First off, I recommend using dahdi-linux 2.4.0 *without* compiling >>>>>> dahdi_dummy. A dummy span is no longer needed for DAHDI to provide a >>>>>> timing source to asterisk. >>>>>> >>>>>> But you'll still need crc_ccitt module for dahdi to load, so that >>>>>> doesn't fix the problem as you describe here. >>>>>> >>>>>> If you rebuilt your kernel (which probably wasn't necessary...) you need >>>>>> to reboot into the new kernel, then rebuild DAHDI against your running >>>>>> kernel in order to load. Sounds like you have built DAHDI against one >>>>>> version of the kernel and you're running against another one. >>>>>> >>>>>> Also...make sure you're using "modprobe" and not "insmod" to load the >>>>>> driver...so that crc_ccitt will automatically be loaded as a dependency. >>>>>> >>>>>> For example you can see it automatically loaded here (and how >>>>>> dahdi_dummy isn't needed for timing). >>>>>> >>>>>> ]# lsmod | grep crc_ccitt >>>>>> ]# dahdi_test -c 1 >>>>>> Unable to open dahdi interface: No such file or directory >>>>>> ]# modprobe dahdi >>>>>> ]# lsmod | grep crc_ccitt >>>>>> crc_ccitt 10240 1 dahdi >>>>>> ]# dahdi_test -c 5 >>>>>> Opened pseudo dahdi interface, measuring accuracy... >>>>>> 99.998% 99.981% 99.990% 99.990% 99.991% >>>>>> --- Results after 5 passes --- >>>>>> Best: 99.998 -- Worst: 99.981 -- Average: 99.990100, Difference: >>>>>> 99.990101 >>>>>> ]# >>>>> >>>>> I did rebuild the kernel, it has the same version and the same config as >>>>> the old one and it did build a crc_ccitt module, and I even rebooted the >>>>> system with the new modules, but no joy at all. Igot the same results >>>>> whether I rebuilt the kernel or not, so this is what is confusing to me. >>>>> >>>> >>>> What you get from the following commands: >>>> >>>> ]# lsmod | grep crc_ccitt >>> I had to modprobe it, but I got: >>> crc_ccitt 2080 0 >>> >>> >>>> ]# modinfo crc_ccitt >>> filename: /lib/modules/2.6.26-2-686/kernel/lib/crc-ccitt.ko >>> license: GPL >>> description: CRC-CCITT calculations >>> depends: >>> vermagic: 2.6.26-2-686 SMP mod_unload modversions 686 >>> >>>> ]# uname -a >>> Linux eirasterisk 2.6.26-2-686 #3 SMP Tue Jan 4 15:29:02 EST 2011 i686 >>> GNU/Linux >>> >>>> ]# cat /proc/kallsyms | grep crc_ccitt >>> 00000000 a crc-ccitt.c [crc_ccitt] >>> f8c6d284 ? __mod_license69 [crc_ccitt] >>> f8c6d290 ? __mod_description68 [crc_ccitt] >>> f8c72250 r __ksymtab_crc_ccitt [crc_ccitt] >>> f8c72268 r __kstrtab_crc_ccitt [crc_ccitt] >>> f8c72260 r __kcrctab_crc_ccitt [crc_ccitt] >>> f8c72258 r __ksymtab_crc_ccitt_table [crc_ccitt] >>> f8c72272 r __kstrtab_crc_ccitt_table [crc_ccitt] >>> f8c72264 r __kcrctab_crc_ccitt_table [crc_ccitt] >>> 00000000 a crc-ccitt.mod.c [crc_ccitt] >>> f8c6d2b4 ? __module_depends [crc_ccitt] >>> f8c6d32c ? ____versions [crc_ccitt] >>> f8c6d2c0 ? __mod_vermagic5 [crc_ccitt] >>> f8c725e0 d __this_module [crc_ccitt] >>> 3771b461 a __crc_crc_ccitt [crc_ccitt] >>> f8c72000 T crc_ccitt [crc_ccitt] >>> 75811312 a __crc_crc_ccitt_table [crc_ccitt] >>> f8c72050 R crc_ccitt_table [crc_ccitt] >>> >>>> ]# modinfo dahdi >>> filename: /lib/modules/2.6.26-2-686/dahdi/dahdi.ko >>> version: SVN-trunk-r9614 >>> alias: dahdi_dummy >>> license: GPL v2 >>> description: DAHDI Telephony Interface >>> author: Mark Spencer<[email protected]> >>> srcversion: A63E42F5ADDDE39777BCC24 >>> depends: >>> vermagic: 2.6.26-2-686 SMP mod_unload modversions 686 >>> parm: debug:Sets debugging verbosity as a bitfield, to see >>> general debugging set this to 1. To see RBS debugging set this to 32 >>> (int) >>> parm: deftaps:int >>> parm: max_pseudo_channels:Maximum number of pseudo >>> channels. (int) >>> >> >> And with the crc_ccitt module loaded you still cannot run "modprobe dahdi"? >> >> If so, what is the output of: >> >> []# cat /lib/modules/`uname -r`/modules.dep | grep dahdi.ko: > /lib/modules/2.6.26-2-686/dahdi/dahdi.ko: > /lib/modules/2.6.26-2-686/kernel/lib/crc-ccitt.ko
<snip> >> and >> >> []# dmesg -c > /dev/null; modprobe dahdi; dmesg; lsmod | grep dahdi > FATAL: Error inserting dahdi (/lib/modules/2.6.26-2-686/dahdi/dahdi.ko): > Unknown symbol in module, or unknown parameter (see dmesg) > [25991.968325] dahdi: no symbol version for crc_ccitt_table > [25991.968330] dahdi: Unknown symbol crc_ccitt_table > > So everything appears right. Have you "make clean; make install" in your dahdi-linux directory since rebuilding and rebooting into your new kernel? Otherwise, since crc_ccitt_table is in your /proc/kallsyms, you could just 'modprobe --force dahdi' to bypass the symbol version check. -- Shaun Ruffell Digium, Inc. | Linux Kernel Developer 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA Check us out at: www.digium.com & www.asterisk.org -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
