nvidia driver 1.0.8756 module doesn't be built in linux kernel 2.6.18rc1.

[sangu]

OS Fedora Development (rawhide 20060706)

$rpm -q --changelog kernel-2.6.17-1.2356.fc6
* Fri Jul 07 2006 Dave Jones <davej@redhat.com>
- 2.6.18-rc1

nvidia kernel module build error message

[...]
make -rR -f /usr/src/kernels/2.6.17-1.2356.fc6-i686/scripts/Makefile.modpost
scripts/mod/modpost -m -a -i /usr/src/kernels/2.6.17-1.2356.fc6-i686/Module.symvers -I /usr/src/redhat/BUILD/nvidia-kmod-1.0.8762/_kmod_build_/usr/src/nv/Modules.symvers -o /usr/src/redhat/BUILD/nvidia-kmod-1.0.8762/_kmod_build_/usr/src/nv/Modules.symvers /usr/src/redhat/BUILD/nvidia-kmod-1.0.8762/_kmod_build_/usr/src/nv/nvidia.o
WARNING: could not find /usr/src/redhat/BUILD/nvidia-kmod-1.0.8762/_kmod_build_/usr/src/nv/.nv-kernel.o.cmd for /usr/src/redhat/BUILD/nvidia-kmod-1.0.8762/_kmod_build_/usr/src/nv/nv-kernel.o
FATAL: modpost: GPL-incompatible module nvidia.ko uses GPL-only symbol 'lockdep_init_map'
make[3]: *** [__modpost] Error 1
make[2]: *** [modules] Error 2
NVIDIA: left KBUILD.
nvidia.ko failed to build!
make[1]: *** [mdl] Error 1
make: *** [module] Error 2

[Dragoran]

that me be caused by the enabled lock validator (a debug option) try to build the kernel without this options:

CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_PROVE_LOCKING=y

or try a vanilla 2.6.18-rc1 without the lock validator
(the Fedora kernel will have this off for release kernel; because of perfomance reason; same for other debug options)

[zander]

Correct, the NVIDIA kernel module involuntarily picks this symbol up when the kernel is configured with support for the lock validator.

[sangu]

Thanks, Dragoran, zander.

You're right!!!. My problem is fixed(Building nvidia kernel module is success).

After modifying only /usr/src/kernels/2.6.17-1.2356.fc6-i686/config(file in kernel-devel package), build kernel module and install nvidia kernel module.

But X doesn't start.

[Dragoran]

you can't build a kernel module with a different config than your kernel;
if you do this the module will not be able to load.

[sangu]

https://bugzilla.redhat.com/bugzilla....cgi?id=197787

------- Additional Comments From davej at redhat.com 2006-07-11 02:56 EST -------
nvidia module shouldn't be picking up this symbol.

[zander]

@sangu: I agree with Dave, yet it does, without explicitely referencing any GPL symbols. I believe this problem was briefly discussed for the VMware kernel module(s) on the LKML recently (see http://marc.theaimsgroup.com/?l=linu...4503827984&w=2). In case of the NVIDIA kernel module, the lockdep_init_map symbol is picked up via init_waitqueue_head() and sema_init(), which references init_waitqueue_head().