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4c3384d7ab
Those hooks run as BPF_CGROUP_RUN_SA_PROG_LOCK and operate on a locked socket. Note that we could remove the switch for prog->expected_attach_type altogether since all current sock_addr attach types are covered. However, it makes sense to keep it as a safe-guard in case new sock_addr attach types are added that might not operate on a locked socket. Therefore, avoid to let this slip through. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20210127232853.3753823-5-sdf@google.com
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.