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Pavel Begunkov
a223e96f73
The user access section in io_msg_copy_hdr() is overextended by covering selected buffers. It's hard to work with and prone to errors. Limit the section to msghdr import only, selected buffers will do a separate copy_from_user() call, and then move it into its own function. This should be fine, selected buffer single shots are not important, for multishots the overhead should be non-existent, and it's not that expensive overall. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/d3eb1f81c8cfbea9f1aa57dab90c472d2aa6e371.1740569495.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
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 reStructuredText 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.