Mimi Zohar [off-list ref] wrote:

By this point, IMA-appraisal has already verified the kernel module
signature back in kernel_read_file_from_fd(), if it was required.
?Having a key with which to verify the appended signature or requiring
an appended signature, should not be required as well.

I guess I don't need to put in any support for IMA here, then, and you've
taken care of it in your patchset such that it won't actually go into
module_sig_check() in that case (or will at least return immediately).

David
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