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

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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: Jithu Joseph <jithu.joseph@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
Link: https://lore.kernel.org/r/20231005195137.3117166-7-jithu.joseph@intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Jithu Joseph 2023-10-05 12:51:34 -07:00 committed by Ilpo Järvinen
parent 25a76dbb36
commit 60d2e1b37d
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GPG Key ID: 59AC4F6153E5CE31
1 changed files with 7 additions and 0 deletions
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7
drivers/platform/x86/intel/ifs/load.c
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@ -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;
}