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[ Upstream commit7f360bec37] First, when memory allocation for sg_list_unaligned failed, there is a bug of calling put_pages() as we haven't pinned any pages. Second, if get_user_pages_fast() failed we should unpin num_pinned pages. This will address both. As part of these changes, minor update in documentation. Fixes:6db7199407("drivers/virt: introduce Freescale hypervisor management driver") Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Link: https://lore.kernel.org/r/1598995271-6755-1-git-send-email-jrdr.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 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.