Unverified Commit 60d2e1b3 authored by Jithu Joseph's avatar Jithu Joseph Committed by Ilpo Järvinen
Browse files

platform/x86/intel/ifs: Metadata validation for start_chunk 



Add an additional check to validate IFS image metadata field prior to
loading the test image.

If start_chunk is not a multiple of chunks_per_stride error out.

Signed-off-by: default avatarJithu Joseph <jithu.joseph@intel.com>
Reviewed-by: default avatarTony Luck <tony.luck@intel.com>
Tested-by: default avatarPengfei Xu <pengfei.xu@intel.com>
Link: https://lore.kernel.org/r/20231005195137.3117166-7-jithu.joseph@intel.com


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent 25a76dbb

drivers/platform/x86/intel/ifs/load.c

+7 −0
Original line number Diff line number Diff line
@@ -291,6 +291,13 @@ static int validate_ifs_metadata(struct device *dev) 
		return ret;

	}



	if (ifs_meta->chunks_per_stride &&

	    (ifs_meta->starting_chunk % ifs_meta->chunks_per_stride != 0)) {

		dev_warn(dev, "Starting chunk num %u not a multiple of chunks_per_stride %u\n",

			 ifs_meta->starting_chunk, ifs_meta->chunks_per_stride);

		return ret;

	}



	return 0;

}