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FATAL: Module binfmt_misc not found.

Hi group,
I starting having this problem at boot time. In my rc.local I have rgese lines:

Code:

modprobe binfmt_misc



echo ':rexx:M::/*::/usr/bin/rexx:'    >> /proc/sys/fs/binfmt_misc/register

echo ':rexxcmd:E::cmd::/usr/bin/rexx:' >> /proc/sys/fs/binfmt_misc/register

All worked well for a long time, since FC5.

Now for some reason I get this:

Code:

$ modprobe binfmt_misc

FATAL: Module binfmt_misc not found.

FATAL: Error running install command for binfmt_misc

I am running Fedora Core 10 on a Fujitsu LifeBook.

Any ideas?

Thanks for your time.

It looks like your FC 10 kernel does not have the binfmt_misc module compiled in, unlike your old FC 5. If you still need it (to run rexx as I see in your rc.local), then you have to recompile your kernel adding it. Quoting from kernel help:

Quote:

CONFIG_BINFMT_MISC:
If you say Y here, it will be possible to plug wrapper-driven binary formats into the kernel. You will like this especially when you use programs that need an interpreter to run like Java, Python, .NET or Emacs-Lisp.
...
Once you have registered such a binary class with the kernel, you can start one of those programs simply by typing in its name at a shell prompt; Linux will automatically feed it to the correct interpreter.
...
To use binfmt_misc, you will need to mount it:
mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc You may say M here for module support and later load the module when you have use for it; the module is called binfmt_misc. If you don't know what to answer at this point, say Y.
Symbol: BINFMT_MISC [=m]
Prompt: Kernel support for MISC binaries
Defined at fs/Kconfig.binfmt:139
Location:
-> Executable file formats / Emulations

Quote:

Originally Posted by bathory (Post 3631496)

It was working until about a week ago. I just updated the kernel and it still is broken.

Quote:

$ modprobe binfmt_misc
FATAL: Module binfmt_misc not found.
FATAL: Error running install command for binfmt_misc

Try to run it as root and see what happens.
Also what is the output of

Code:

grep BINFMT_MISC /boot/config-`uname -r`

Quote:

Originally Posted by bathory (Post 3632894)

Try to run it as root and see what happens.
Also what is the output of

Code:

grep BINFMT_MISC /boot/config-`uname -r`

$ grep BINFMT_MISC /boot/config-`uname -r`
500:CONFIG_BINFMT_MISC=y

[root@laptop ~]# modprobe binfmt_misc
FATAL: Module binfmt_misc not found.
FATAL: Error running install command for binfmt_misc

So you have binfmt_misc built-in the kernel and not as a module. This means that you can skip the modprobe command and use the rest to do what you want.

Quote:

Originally Posted by bathory (Post 3634013)

So you have binfmt_misc built-in the kernel and not as a module. This means that you can skip the modprobe command and use the rest to do what you want.

But it is not working. Not sure why?

Quote:

Originally Posted by MrUmunhum (Post 3634944)

But it is not working. Not sure why?

OK, I figured it out. The problem was that the entry pointed /usr/local/bin/rexx and not /usr/bin/rexx. Don't know why this has changed?
The quick fix was 'sudo ln -s /usr/bin/rexx /usr/local/bin/rexx'.
This was the give away.

Code:

# cat /proc/sys/fs/binfmt_misc/rexx

enabled

interpreter /usr/local/bin/rexx

flags: 

offset 0

magic 2f2a

Working on proper fix.