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b07490067d
commit40a74870b2upstream. 'buffer_index_array' really looks like a bitmap. So it should be allocated as such. When kzalloc is called, a number of bytes is expected, but a number of longs is passed instead. In get(), if not enough memory is allocated, un-allocated memory may be read or written. So use bitmap_zalloc() to safely allocate the correct memory size and avoid un-expected behavior. While at it, change the corresponding kfree() into bitmap_free() to keep the semantic. Fixes:ea2c9c9f65("orangefs: bufmap rewrite") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Mike Marshall <hubcap@omnibond.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.