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7bd50ccf00
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>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.