can not load module RTC on Scientific Linux 4.0

[netbaby]

Dear all,

I am trying to install NIST Net on Scientific Linux 4.0. I can compile NIST Net source successfully but when I load NIST Net module, I raised an error about RTC module.

From the Internet, I recompiled kernel Linux with CONFIG_RTC=m in file .config

After restarting, I ran RTC module but it was not successful.
Here is my log:

[root(a)localhost ~]# cd /usr/src/redhat/BUILD/kernel-2.6.9/linux-2.6.9/
[root(a)localhost linux-2.6.9]# find . -name rtc.o -print
./drivers/char/rtc.o

[root(a)localhost linux-2.6.9]# find /lib/modules/ -name rtc.o -print
/lib/modules/2.6.9-5.0.5.EL/kernel/drivers/char/rtc.o
[root(a)localhost linux-2.6.9]# lsmod | grep rtc
[root(a)localhost linux-2.6.9]# lsmod
Module Size Used by
nls_utf8 2113 1
parport_pc 24705 1
lp 12077 0
parport 37129 2 parport_pc,lp
autofs4 23237 0
i2c_dev 11329 0
i2c_core 22081 1 i2c_dev
sunrpc 157093 1
button 6481 0
battery 8901 0
ac 4805 0
md5 4033 1
ipv6 232833 8
pcnet32 29897 0
mii 4673 1 pcnet32
floppy 58481 0
dm_snapshot 17029 0
dm_zero 2369 0
dm_mirror 22957 2
ext3 116809 2
jbd 71257 1 ext3
dm_mod 54741 6 dm_snapshot,dm_zero,dm_mirror
[root(a)localhost linux-2.6.9]#
[root(a)localhost linux-2.6.9]# lsmod | grep r*
Module Size Used by
nls_utf8 2113 1
parport_pc 24705 1
lp 12077 0
parport 37129 2 parport_pc,lp
autofs4 23237 0
i2c_dev 11329 0
i2c_core 22081 1 i2c_dev
sunrpc 157093 1
button 6481 0
battery 8901 0
ac 4805 0
md5 4033 1
ipv6 232833 8
pcnet32 29897 0
mii 4673 1 pcnet32
floppy 58481 0
dm_snapshot 17029 0
dm_zero 2369 0
dm_mirror 22957 2
ext3 116809 2
jbd 71257 1 ext3
dm_mod 54741 6 dm_snapshot,dm_zero,dm_mirror

[root(a)localhost linux-2.6.9]# modprobe rtc
FATAL: Module rtc not found.

[root(a)localhost linux-2.6.9]# uname -r
2.6.9-5.0.5.EL

[root(a)localhost linux-2.6.9]# pwd
/usr/src/redhat/BUILD/kernel-2.6.9/linux-2.6.9
[root(a)localhost linux-2.6.9]#
[root(a)localhost linux-2.6.9]# rmmod rtc_cmos
ERROR: Module rtc_cmos does not exist in /proc/modules
[root(a)localhost linux-2.6.9]# modprobe rtc
FATAL: Module rtc not found.

[root(a)localhost linux-2.6.9]# cd /root/NISTNet/nistnet-3.0a/
[root(a)localhost nistnet-3.0a]# ./Load.Nistnet
ERROR: Module rtc does not exist in /proc/modules
Couldn't find rtc module - /dev/rtc will be mostly
unusable after running nistnet. Sorry about that....
To prevent this message, recompile rtc
(Enhanced Real Time Clock Support, under
character devices) as a module.
FATAL: Module nistnet not found.
Problems with modprobe, repeating with debug on
FATAL: Module nistnet not found.

[root(a)localhost nistnet-3.0a]#

Obviously, we could find rtc.o in /drivers/char/rtc.o and /lib/modules/2.6.9-5.0.5.EL/kernel/drivers/char/rtc.o but can not load this module by using modprobe.

Please help me how to load RTC module.

I appreciate your help.

[netbaby]

I am sorry. About this command:

[root(a)localhost linux-2.6.9]# find /lib/modules/ -name rtc.o -print
/lib/modules/2.6.9-5.0.5.EL/kernel/drivers/char/rtc.o

In fact, I stupidly copied rtc.o from <kernel dir>/drivers/char/rtc.o to /lib/modules/2.6.9-5.0.5.EL/kernel/drivers/char/. Actually, When I typed this command, nothing was returned. So, the module rtc was not installed.

I can find rtc.o in <kernel dir>/drivers/char/rtc.o ---> RTC module had been compiled.

I can't find rtc.o in /lib/modules/2.6.9-5.0.5.EL/kernel/drivers/char/ ---> this module hadn't installed ---> HOW can I install rtc module?

Thank you very much.

[atreyu]

For 2.6 kernel, I believe you want a ".ko" file, not a ".o" file. When you compiled it, you should have created the correct driver, it would be in the same output directory. Can you load it manually?, e.g.:

insmod <kernel dir>/drivers/char/rtc.ko

If so, copy it to /lib/modules/2.6.9-5.0.5.EL/kernel/drivers/char and do a:

depmod -a

Then you should be able to do "modprobe rtc".

[netbaby]

Dear,

This is the log I tested in my Virtual Machine:

[root@localhost char]# cd /lib/modules/2.6.9-5.0.5.EL/
[root@localhost 2.6.9-5.0.5.EL]# ls
build modules.alias modules.ieee1394map modules.pcimap source
extra modules.ccwmap modules.inputmap modules.symbols
kernel modules.dep modules.isapnpmap modules.usbmap
[root@localhost 2.6.9-5.0.5.EL]# cd kernel/drivers/char/
[root@localhost char]# ls
crash.ko hangcheck-timer.ko ipmi nvram.ko rtc.ko synclinkmp.ko
drm hw_random.ko lp.ko pcmcia sonypi.ko toshiba.ko
dtlk.ko i8k.ko n_hdlc.ko ppdev.ko synclink.ko watchdog
[root@localhost char]# ls -la
total 1824
drwxr-xr-x 6 root root 4096 Sep 28 15:56 .
drwxr-xr-x 26 root root 4096 Sep 28 15:58 ..
-rw-r--r-- 1 root root 83528 Sep 28 15:56 crash.ko
drwxr-xr-x 2 root root 4096 Sep 28 15:56 drm
-rw-r--r-- 1 root root 96008 Sep 28 15:56 dtlk.ko
-rw-r--r-- 1 root root 83109 Sep 28 15:56 hangcheck-timer.ko
-rw-r--r-- 1 root root 100899 Sep 28 15:56 hw_random.ko
-rw-r--r-- 1 root root 97865 Sep 28 15:56 i8k.ko
drwxr-xr-x 2 root root 4096 Sep 28 15:56 ipmi
-rw-r--r-- 1 root root 113353 Sep 28 15:56 lp.ko
-rw-r--r-- 1 root root 108302 Sep 28 15:56 n_hdlc.ko
-rw-r--r-- 1 root root 107006 Sep 28 15:56 nvram.ko
drwxr-xr-x 2 root root 4096 Sep 28 15:56 pcmcia
-rw-r--r-- 1 root root 108770 Sep 28 15:56 ppdev.ko
-rw-r--r-- 1 root root 137900 Sep 28 15:56 rtc.ko
-rw-r--r-- 1 root root 157660 Sep 28 15:56 sonypi.ko
-rw-r--r-- 1 root root 250065 Sep 28 15:56 synclink.ko
-rw-r--r-- 1 root root 218338 Sep 28 15:56 synclinkmp.ko
-rw-r--r-- 1 root root 90586 Sep 28 15:56 toshiba.ko
drwxr-xr-x 2 root root 4096 Sep 28 15:56 watchdog
[root@localhost char]# depmod -a
[root@localhost char]# modprobe rtc
[root@localhost char]# lsmod
Module Size Used by
rtc 17628 0
nls_utf8 2304 1
parport_pc 25024 1
lp 12396 0
parport 37704 2 parport_pc,lp
autofs4 23684 0
i2c_dev 11776 0
i2c_core 22528 1 i2c_dev
sunrpc 157924 1
button 6928 0
battery 9220 0
ac 5124 0
md5 4352 1
ipv6 233920 10
ehci_hcd 31236 0
uhci_hcd 31256 0
pcnet32 30216 0
mii 4992 1 pcnet32
floppy 58800 0
dm_snapshot 16964 0
dm_zero 2304 0
dm_mirror 22892 2
ext3 116744 2
jbd 71192 1 ext3
dm_mod 54548 6 dm_snapshot,dm_zero,dm_mirror
[root@localhost char]# cd /root/NISTNet/nistnet-3.0a/
[root@localhost nistnet-3.0a]# ./Load.Nistnet
rtc module removed - you may want to reinstall it
(with modprobe rtc) after you are done with nistnet
nistnet module installed successfully
[root@localhost nistnet-3.0a]# lsmod
Module Size Used by
nistnet 60600 0
nls_utf8 2304 1
parport_pc 25024 1
lp 12396 0
parport 37704 2 parport_pc,lp
autofs4 23684 0
i2c_dev 11776 0
i2c_core 22528 1 i2c_dev
sunrpc 157924 1
button 6928 0
battery 9220 0
ac 5124 0
md5 4352 1
ipv6 233920 10
ehci_hcd 31236 0
uhci_hcd 31256 0
pcnet32 30216 0
mii 4992 1 pcnet32
floppy 58800 0
dm_snapshot 16964 0
dm_zero 2304 0
dm_mirror 22892 2
ext3 116744 2
jbd 71192 1 ext3
dm_mod 54548 6 dm_snapshot,dm_zero,dm_mirror
[root@localhost nistnet-3.0a]#
[root@localhost nistnet-3.0a]# lsmod | grep rtc
[root@localhost nistnet-3.0a]# modprobe rt
FATAL: Module rt not found.
[root@localhost nistnet-3.0a]# modprobe rtc
FATAL: Error inserting rtc (/lib/modules/2.6.9-5.0.5.EL/kernel/drivers/char/rtc.ko): Input/output error
[root@localhost nistnet-3.0a]#
[root@localhost nistnet-3.0a]# modprobe rtc
FATAL: Error inserting rtc (/lib/modules/2.6.9-5.0.5.EL/kernel/drivers/char/rtc.ko): Input/output error
[root@localhost nistnet-3.0a]#
[root@localhost nistnet-3.0a]#
[root@localhost nistnet-3.0a]#
[root@localhost nistnet-3.0a]#
[root@localhost nistnet-3.0a]# cd /lib/modules/2.6.9-5.0.5.EL/kernel/drivers/char/
[root@localhost char]# ls
crash.ko hangcheck-timer.ko ipmi nvram.ko rtc.ko synclinkmp.ko
drm hw_random.ko lp.ko pcmcia sonypi.ko toshiba.ko
dtlk.ko i8k.ko n_hdlc.ko ppdev.ko synclink.ko watchdog
[root@localhost char]# insmod rtc.ko
insmod: error inserting 'rtc.ko': -1 Input/output error
[root@localhost char]# insmod rtc.ko
insmod: error inserting 'rtc.ko': -1 Input/output error
[root@localhost char]#
[root@localhost char]#

[root@localhost char]#
[root@localhost char]# cd /root/NISTNet/nistnet-3.0a/
[root@localhost nistnet-3.0a]# ./Load.Nistnet
ERROR: Module rtc does not exist in /proc/modules
Couldn't find rtc module - /dev/rtc will be mostly
unusable after running nistnet. Sorry about that....
To prevent this message, recompile rtc
(Enhanced Real Time Clock Support, under
character devices) as a module.
nistnet module installed successfully
[root@localhost nistnet-3.0a]#

I can start the software but I don't understand why I couldn't load RTC module

BUT when I installed Scientific Linux 4.0 and NIST Net on my real server, I could not start rtc.

[root@localhost char]# depmod -a
[root@localhost char]# insmod rtc.ko
insmod: error inserting 'rtc.ko': -1 Input/output error

Why did the OS raised this error anh how can I resolve it?

I appreciate your help.

[atreyu]

I'm not familiar with nistnet - does it need the rtc module loaded? Are you trying to run the nistnet from this page? If so, they say:

Load the rtc kernel module. NistNet wants to unload this module, do not worry if it is not present.

Is the module/app not working as it should?

Maybe you need to try their suggestion regarding the 2.6.23 kernel.