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[ Upstream commit3b054b7133] When run_kselftests.sh is run, it hangs after test_tc_tunnel.sh. The reason is test_tc_tunnel.sh ensures the server ('nc -l') is run all the time, starting it again every time it is expected to terminate. The exception is the final client_connect: the server is not started anymore, which ensures no process is kept running after the test is finished. For a sit test, though, the script is terminated prematurely without the final client_connect and the 'nc' process keeps running. This in turn causes the run_one function in kselftest/runner.sh to hang forever, waiting for the runaway process to finish. Ensure a remaining server is terminated on cleanup. Fixes:f6ad6accaa("selftests/bpf: expand test_tc_tunnel with SIT encap") Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Willem de Bruijn <willemb@google.com> Link: https://lore.kernel.org/bpf/60919291657a9ee89c708d8aababc28ebe1420be.1573821780.git.jbenc@redhat.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.