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Commitd341659f47("xtensa: switch to providing csum_and_copy_from_user()") introduced access check, but incorrectly tested dst instead of src. Fix access_ok argument in csum_and_copy_from_user. Cc: Al Viro <viro@zeniv.linux.org.uk> Fixes:d341659f47("xtensa: switch to providing csum_and_copy_from_user()") Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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.