[Why] Some DPIA AUX replies have incorrect data length from original request. This could lead to overwriting of destination buffer if reply length is larger, which could cause invalid access to stack since many destination buffers are declared as local variables. [How] Check for invalid length from DPIA AUX replies and trigger a retry if reply length is not the same as original request. A DRM_WARN() dmesg log is also produced. Reviewed-by: Roman Li <Roman.Li@amd.com> Acked-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Stylon Wang <stylon.wang@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org # 6.0.x
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.
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