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Message-Id: <20220908215504.3686827-3-samitolvanen@google.com>
Date: Thu, 8 Sep 2022 14:54:44 -0700
From: Sami Tolvanen <samitolvanen@...gle.com>
To: linux-kernel@...r.kernel.org
Cc: Kees Cook <keescook@...omium.org>,
Josh Poimboeuf <jpoimboe@...hat.com>,
Peter Zijlstra <peterz@...radead.org>, x86@...nel.org,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Nathan Chancellor <nathan@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Joao Moreira <joao@...rdrivepizza.com>,
Sedat Dilek <sedat.dilek@...il.com>,
Steven Rostedt <rostedt@...dmis.org>,
linux-hardening@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, llvm@...ts.linux.dev,
Sami Tolvanen <samitolvanen@...gle.com>
Subject: [PATCH v5 02/22] scripts/kallsyms: Ignore __kcfi_typeid_
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@...gle.com>
Reviewed-by: Kees Cook <keescook@...omium.org>
Tested-by: Kees Cook <keescook@...omium.org>
Tested-by: Nathan Chancellor <nathan@...nel.org>
---
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
};
--
2.37.2.789.g6183377224-goog
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