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

[Mick]

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

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.

-- 
Regards,
Mick