Re: next-20151101 - depmod issues with Lustre modules

From: Linus Torvalds
Date: Sat Nov 07 2015 - 17:30:50 EST

On Sat, Nov 7, 2015 at 12:37 PM, Dmitry Safonov <0x7f454c46@xxxxxxxxx> 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.ko provides the following functions needed by lnet.ko:


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?

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