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Dan Carpenter dac4f1964a misc: xilinx_sdfec: Fix a couple small information leaks
These structs have holes in them so we end up disclosing a few bytes of
uninitialized stack data.

drivers/misc/xilinx_sdfec.c:305 xsdfec_get_status() warn: check that 'status' doesn't leak information (struct has a hole after 'activity')
drivers/misc/xilinx_sdfec.c:449 xsdfec_get_turbo() warn: check that 'turbo_params' doesn't leak information (struct has a hole after 'scale')

We need to zero out the holes with memset().

Fixes: 6bd6a690c2 ("misc: xilinx_sdfec: Add stats & status ioctls")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dragan Cvetic <dragan.cvetic@xilinx.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/20190821070606.GA26957@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2019-08-22 14:28:09 -07:00
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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.