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From:   Steve French <smfrench@gmail.com>
Date:   Wed, 2 Oct 2019 18:54:26 -0500
Message-ID: <CAH2r5mtVW=3-2L+0QFJAqBG+uj2sYmF=dtzT_kqwK59cu94vGw@mail.gmail.com>
Subject: Re: nsdeps not working on modules in 5.4-rc1
To:     LKML <linux-kernel@vger.kernel.org>,
        Matthias Maennich <maennich@google.com>
Cc:     CIFS <linux-cifs@vger.kernel.org>
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And running the build differently, from the root of the git tree
(5.4-rc1) rather than using the Ubuntu 5.4-rc1 headers also fails

e.g. "make  M=fs/cifs modules nsdeps"

...
  LD [M]  fs/cifs/cifs.o
  Building modules, stage 2.
  MODPOST 1 modules
WARNING: module cifs uses symbol sigprocmask from namespace
_fs/cifs/cache.o), but does not import it.
...
WARNING: module cifs uses symbol posix_test_lock from namespace
cifs/cache.o), but does not import it.
  CC [M]  fs/cifs/cifs.mod.o
  LD [M]  fs/cifs/cifs.ko
  Building modules, stage 2.
  MODPOST 1 modules
./scripts/nsdeps: 34: local: ./fs/cifs/cifsfs.c: bad variable name
make: *** [Makefile:1710: nsdeps] Error 2

On Wed, Oct 2, 2019 at 6:45 PM Steve French <smfrench@gmail.com> wrote:
>
> Following the instructions in Documentation/namespaces to autogenerate
> the namespace changes to avoid the multiple build warnings in 5.4-rc1
> for my module ... I am not able to get nsdeps to work.   For example
> in my module directory (fs/cifs) trying to build with nsdeps:
>
>       make -C /usr/src/linux-headers-`uname -r` M=`pwd` modules nsdeps
>
> gets the error "cat: ./modules.order: No such file or directory"
>
> This is on Ubuntu 18, running current 5.4-rc1 kernel.  It looks like
> it is looking for modules.order in the wrong directory (it is present
> in fs/cifs - but it looks like it is looking for it in /usr/src where
> of course it won't be found)
>
> I am trying to remove the hundreds of new warnings introduced by
> namespaces in 5.4-rc1 when building my module e.g.
>
> WARNING: module cifs uses symbol __fscache_acquire_cookie from
> namespace .o: $(deps_/home/sfrench/cifs-2.6/fs/cifs/cache.o), but does
> not import it.
> --
> Thanks,
>
> Steve


-- 
Thanks,

Steve