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Dan Carpenter b8c0aa9b16 NTB: EPF: Tidy up some bounds checks
This sscanf() is reading from the filename which was set by the kernel
so it should be trust worthy.  Although the data is likely trust worthy
there is some bounds checking but unfortunately, it is not complete or
consistent.  Additionally, the Smatch static checker marks everything
that comes from sscanf() as tainted and so Smatch complains that this
code can lead to an out of bounds issue.  Let's clean things up and make
Smatch happy.

The first problem is that there is no bounds checking in the _show()
functions.  The _store() and _show() functions are very similar so make
the bounds checking the same in both.

The second issue is that if "win_no" is zero it leads to an array
underflow so add an if (win_no <= 0) check for that.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Souptick Joarder (HPE) <jrdr.linux@gmail.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
History 2022-08-09 17:54:54 -04:00
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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.