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SubjectRe: [PATCH] signal: Avoid corrupting si_pid and si_uid in do_notify_parent
On 04/21, Christian Brauner wrote:
>
> process B setnses into
> <pidnsC> which is a sibling pid namespace,

please see pidns_install(), it verifies that

* Only allow entering the current active pid namespace
* or a child of the current active pid namespace.

Oleg.

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