Re: [gentoo-user] New install, can't load modules

[Alan McKinnon]

On 13/07/2015 19:47, Mick wrote:
> On Monday 13 Jul 2015 17:42:22 Alexander Kapshuk wrote:
>> On Mon, Jul 13, 2015 at 5:29 PM, Alan McKinnon <alan.mckinnon@×××××.com>
> wrote:
>>> Did a new install, the new kernel can't load modules:
>>>
>>> # modprobe nfsv3
>>> modprobe: ERROR: could not insert 'nfsv3': Exec format error
>>>
>>> Odd. Never had this before. The module file itself is a regular 64-bit
>>> ELF file, just as it should be (compared to a working module on another
>>> machine)
>>>
>>> gcc is 4.8.4 as supplied by a recent stage3-amd64-20150709.tar.bz2:
>>> # gcc -v
>>> Using built-in specs.
>>> COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/4.8.4/gcc
>>> COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.8.4/lto-wrappe
>>> r Target: x86_64-pc-linux-gnu
>>> Configured with:
>>> /var/tmp/portage/sys-devel/gcc-4.8.4/work/gcc-4.8.4/configure
>>> --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
>>> --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.8.4
>>> --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include
>>> --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.8.4
>>> --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.8.4/man
>>> --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.8.4/info
>>> --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++
>>> -v4 --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.8.4/python
>>> --enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
>>> --disable-werror --with-system-zlib --enable-nls
>>> --without-included-gettext --enable-checking=release
>>> --with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.8.4
>>> p1.6, pie-0.6.1' --enable-libstdcxx-time --enable-shared
>>> --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
>>> --enable-multilib --with-multilib-list=m32,m64 --disable-altivec
>>> --disable-fixed-point --enable-targets=all --disable-libgcj
>>> --enable-libgomp --disable-libmudflap --disable-libssp --enable-lto
>>> --without-cloog --enable-libsanitizer
>>> Thread model: posix
>>> gcc version 4.8.4 (Gentoo 4.8.4 p1.6, pie-0.6.1)
>>>
>>> make.conf seems correct:
>>> CHOST="x86_64-pc-linux-gnu"
>>> CFLAGS="-march=native -O2 -pipe"
>>> CXXFLAGS="${CFLAGS}"
>>> ACCEPT_KEYWORDS="~amd64"
>>>
>>> The kernel loads and runs OK:
>>> # uname -a
>>> Linux download 4.1.2-gentoo #1 SMP Mon Jul 13 13:28:40 SAST 2015 x86_64
>>> Intel(R) Core(TM) i7-2720QM CPU @ 2.20GHz GenuineIntel GNU/Linux
>>>
>>> and the kernel was built with gcc auto-detection:
>>> # grep NATIVE /boot/config-4.1.2-gentoo
>>> CONFIG_MNATIVE=y
>>>
>>> and the .config was grabbed from a working machine with very similar
>>> hardware (one minor hardware upgrade ahead)
>>>
>>> I haven't done a full world update yet, most code is still what's in the
>>> stage3, but always in the past that hasn't been a problem; the stage
>>> must successfully build a kernel and load the modules.
>>>
>>> Module loading works just fine when booted from the Gentoo minimal
>>> install image.
>>>
>>> So, what dumbass n00b error did I make today?
>>>
>>>
>>> --
>>> Alan McKinnon
>>> alan.mckinnon@×××××.com
>>
>> Does 'modprobe -nv' say anything useful?
>>
>> Anything of interest in '/var/log/dmesg'?
>
>
> Just in case you missed it on the enthusiasm of a new install, have you set:
>
> CONFIG_MODULES=y

Yes, that's set. And the kernel correctly loads modules it finds it
needs on startup. I just can't do it from userspace.

>
> and of course built as modules whatever you're modprobing.
>
> BTW, is the module in question called 'nfsv3', or is it 'nfs'?  I don't use it
> myself to know.

The name is correct. There's a module "nfs" for core stuff and "nfsv3" &
"nfsv4" fr the different versions.



-- 
Alan McKinnon
alan.mckinnon@×××××.com