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Merge tag 'for-linus-2020-06-24' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull thread fix from Christian Brauner:
"This fixes a regression introduced with 303cc571d107 ("nsproxy: attach
to namespaces via pidfds").
The LTP testsuite reported a regression where users would now see
EBADF returned instead of EINVAL when an fd was passed that referred
to an open file but the file was not a namespace file.
Fix this by continuing to report EINVAL and add a regression test"
* tag 'for-linus-2020-06-24' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
tests: test for setns() EINVAL regression
nsproxy: restore EINVAL for non-namespace file descriptor
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.