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[ Upstream commit 140ce37fd78a629105377e17842465258a5459ef ] dm_parse_device_entry() simply copies the minor number into dmi.dev, but the dev_t format splits the minor number between the lowest 8 bytes and highest 12 bytes. If the minor number is larger than 255, part of it will end up getting treated as the major number Fix this by checking that the minor number is valid and then encoding it as a dev_t. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.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.