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Daniel Borkmann 80b0d86a17 bpf: fix direct packet write into pop/peek helpers Commit `f1a2e44a3a` ("bpf: add queue and stack maps") probably just copy-pasted .pkt_access for bpf_map_{pop,peek}_elem() helpers, but this is buggy in this context since it would allow writes into cloned skbs which is invalid. Therefore, disable .pkt_access for the two. Fixes: `f1a2e44a3a` ("bpf: add queue and stack maps") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Cc: Mauricio Vasquez B <mauricio.vasquez@polito.it> Acked-by: Mauricio Vasquez B<mauricio.vasquez@polito.it> Signed-off-by: Alexei Starovoitov <ast@kernel.org>		History 2018-10-25 17:02:06 -07:00
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README

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.