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SubjectRe: fs_context-related oops in mainline
On Fri, Mar 15, 2019 at 02:24:30PM +0000, David Howells wrote:
> Al Viro <viro@zeniv.linux.org.uk> wrote:
>
> > - if (fc->user_ns)
> > - put_user_ns(fc->user_ns);
> > - fc->user_ns = get_user_ns(netns->user_ns);
> > + if (netns) {
> > + if (fc->user_ns)
> > + put_user_ns(fc->user_ns);
> > + fc->user_ns = get_user_ns(netns->user_ns);
> > + }
>
> This begs the question why is sysfs using the current network namespace's idea
> of the user namespace? Why not just use the one directly from current->cred?

Ask the networking people that question, I have no idea :)

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