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SubjectRe: [RFC][PATCH 0/6][v3] Container-init signal semantics
Quoting Sukadev Bhattiprolu (
> Container-init must behave like global-init to processes within the
> container and hence it must be immune to unhandled fatal signals from
> within the container (i.e SIG_DFL signals that terminate the process).
> But the same container-init must behave like a normal process to
> processes in ancestor namespaces and so if it receives the same fatal
> signal from a process in ancestor namespace, the signal must be
> processed.
> Implementing these semantics requires that send_signal() determine pid
> namespace of the sender but since signals can originate from workqueues/
> interrupt-handlers, determining pid namespace of sender may not always
> be possible or safe.

Tested-by: Serge Hallyn <>

Tested sending signals to a custom container-init.

Are you planning to address Oleg's comments with a new patch-set,
or with patches on top of this set?


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