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Under certain conditions it was possible for verifier.c:regsafe() to skip check_id() call. This commit adds negative test cases previously errorneously accepted as safe. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20221209135733.28851-3-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>