Re: Linux 3.8.9 Build Failure in user_namespace.c

[Shea Levy]

On 4/29/13 4:56 PM, Serge E. Hallyn wrote:
> Quoting shea@xxxxxxxxxxxx (shea@xxxxxxxxxxxx):
> > Hi All,
> >
> > I just hit the following error trying to build 3.8.9:
> >
> > /nix/store/vkvwpn6f7iff6zqrq2d9z2a1945pcsza-linux-3.8.9-source/kernel/user_namespace.c:
> > In function 'map_write':
> > /nix/store/vkvwpn6f7iff6zqrq2d9z2a1945pcsza-linux-3.8.9-source/kernel/user_namespace.c:582:2:
> > error: implicit declaration of function 'file_ns_capable'
> > [-Werror=implicit-function-declaration]
> > cc1: some warnings being treated as errors
> >
> > Below is my .config, below that the build log.
> I'm looking at 3.9.  file_ns_capable() is declared in capability.h, which gets
> included into user_namespace.c through cred.h.  I did also try building with
> CONFIG_SECURITY=n and CONFIG_USER_NS=y as you have it, but build succeeded,
> as I would expect given how it is included.

It turned out to be a commit Greg missed in 3.8.9, it was fixed in 3.8.10.

> Do you have any custom patches applied by chance?
>
> -serge

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