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[ Upstream commit8ac88eece8] Jiri reports broken test_progs after recent commit68f8e3d4b9("selftests/bpf: Make sure zero-len skbs aren't redirectable"). Apparently we don't remount debugfs when we switch back networking namespace. Let's explicitly mount /sys/kernel/debug. 0: https://lore.kernel.org/bpf/63b85917-a2ea-8e35-620c-808560910819@meta.com/T/#ma66ca9c92e99eee0a25e40f422489b26ee0171c1 Fixes:a30338840f("selftests/bpf: Move open_netns() and close_netns() into network_helpers.c") Reported-by: Jiri Olsa <olsajiri@gmail.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/r/20221123200829.2226254-1-sdf@google.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> 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.