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commitfdaf88531cupstream. When we backportdadd0dcaa6("net/ulp: prevent ULP without clone op from entering the LISTEN status"), we have accidentally backported a part of7a7160edf1("net: Return errno in sk->sk_prot->get_port().") and removed err = -EADDRINUSE in inet_csk_listen_start(). Thus, listen() no longer returns -EADDRINUSE even if ->get_port() failed as reported in [0]. We set -EADDRINUSE to err just before ->get_port() to fix the regression. [0]: https://lore.kernel.org/stable/EF8A45D0-768A-4CD5-9A8A-0FA6E610ABF7@winter.cafe/ Reported-by: Winter <winter@winter.cafe> Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.