[RFC PATCH v3 02/20] scripts/kallsyms: Ignore __kcfi_typeid_

From: Sami Tolvanen
Date: Fri Jun 10 2022 - 19:35:41 EST


The compiler generates __kcfi_typeid_ symbols for annotating assembly
functions with type information. These are constants that can be
referenced in assembly code and are resolved by the linker. Ignore
them in kallsyms.

Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
scripts/kallsyms.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index f18e6dfc68c5..ccdf0c897f31 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -119,6 +119,7 @@ static bool is_ignored_symbol(const char *name, char type)
"__ThumbV7PILongThunk_",
"__LA25Thunk_", /* mips lld */
"__microLA25Thunk_",
+ "__kcfi_typeid_", /* CFI type identifiers */
NULL
};

--
2.36.1.476.g0c4daa206d-goog