depmod: ERROR: Found 2 modules in dependency cycles -- ERROR: Cycle detected: lnet -> libcfs -> lnet
On Sat, Nov 7, 2015 at 12:37 PM, Dmitry Safonov <[hidden email]> wrote:
> Reproduced on mainline v4.3-9038-g27eb427bdc0960 with
> Arch Linux default config (attached):
>
> depmod: ERROR: Found 2 modules in dependency cycles!
> depmod: ERROR: Cycle detected: lnet -> libcfs -> lnet
> make: *** [_modinst_post] Error 1
The reason seems to be that
- lnet.ko provides the following functions needed by libcfs.ko:
libcfs_next_nidstring
libcfs_nid2str_r
- libcfs.ko provides the following functions needed by lnet.ko:
libcfs_debug
libcfs_debug_msg
libcfs_deregister_ioctl
libcfs_register_ioctl
libcfs_subsystem_debug
lustre_insert_debugfs
but I may have messed up something.
Anyway, the problem seems to be that - insanely - lnet.ko provides
those libcfs nid handling functions. They should be in libcfs, as far
as I can tell, just judging by the name. Also judging by the use.
The cause seems to be commit 47ca6ec2673e ("staging: lustre: move
nidstring handling to LNet layer") by James Simmons.
I do wonder if linux-next could perhaps do some modprobe testing too?
Linus
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