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[ Upstream commit2997d94b5d] When writing a task id to the "tasks" file in an rdtgroup, rdtgroup_tasks_write() treats the pid as a number in the current pid namespace. But when reading the "tasks" file, rdtgroup_tasks_show() shows the list of global pids from the init namespace, which is confusing and incorrect. To be more robust, let the "tasks" file only show pids in the current pid namespace. Fixes:e02737d5b8("x86/intel_rdt: Add tasks files") Signed-off-by: Shawn Wang <shawnwang@linux.alibaba.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Reinette Chatre <reinette.chatre@intel.com> Acked-by: Fenghua Yu <fenghua.yu@intel.com> Tested-by: Reinette Chatre <reinette.chatre@intel.com> Link: https://lore.kernel.org/all/20230116071246.97717-1-shawnwang@linux.alibaba.com/ Signed-off-by: Sasha Levin <sashal@kernel.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.
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.