Andrei Vagin [off-list ref] writes:

On Wed, Jul 22, 2020 at 07:15:06PM +0100, Catalin Marinas wrote:

I don't think that we need to handle this case in the kernel. Users
must understand what they are doing and have to write code so that avoid
these sort of situations. In general, I would say that in most cases it
is a bad idea to call setns from a signal handler.

This should not be supported in the first place and just let the
offender die right there.

Thanks,

        tglx

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