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Tracers can trigger trace acquisition based on contextID value, something that isn't useful when PID namespaces are enabled. Indeed the PID value of a process has a different representation in the kernel and the PID namespace, making the feature confusing and potentially leaking internal kernel information. As such simply return an error when the feature is being used from a PID namespace other than the default one. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Kim Phillips <kim.phillips@arm.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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