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2e60442a4f
If !no_engines, then we use copy_from_user to copy to the 'eci' array,
which has XE_HW_ENGINE_MAX_INSTANCE members. The amount of members
copied is given by the user in args->num_engines, so add code to check
that args->num_engines does not exceed XE_HW_ENGINE_MAX_INSTANCE. It's
an unsigned value so there's no need to check for negative values.
Fixes error messages such as:
Buffer overflow detected (54 < 18446744073709551520)!
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20230626212221.136640-2-paulo.r.zanoni@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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| README | ||
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.