Messages in this thread Patch in this message | | | Date | Thu, 8 Sep 2022 14:55:00 -0700 | Subject | [PATCH v5 18/22] kallsyms: Drop CONFIG_CFI_CLANG workarounds | From | Sami Tolvanen <> |
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With -fsanitize=kcfi, the compiler no longer renames static functions with CONFIG_CFI_CLANG + ThinLTO. Drop the code that cleans up the ThinLTO hash from the function names.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Kees Cook <keescook@chromium.org> Tested-by: Nathan Chancellor <nathan@kernel.org> --- kernel/kallsyms.c | 17 ----------------- 1 file changed, 17 deletions(-)
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c index 3e7e2c2ad2f7..b27e6ea31f8b 100644 --- a/kernel/kallsyms.c +++ b/kernel/kallsyms.c @@ -159,7 +159,6 @@ static bool cleanup_symbol_name(char *s) * character in an identifier in C. Suffixes observed: * - foo.llvm.[0-9a-f]+ * - foo.[0-9a-f]+ - * - foo.[0-9a-f]+.cfi_jt */ res = strchr(s, '.'); if (res) { @@ -167,22 +166,6 @@ static bool cleanup_symbol_name(char *s) return true; } - if (!IS_ENABLED(CONFIG_CFI_CLANG) || - !IS_ENABLED(CONFIG_LTO_CLANG_THIN) || - CONFIG_CLANG_VERSION >= 130000) - return false; - - /* - * Prior to LLVM 13, the following suffixes were observed when thinLTO - * and CFI are both enabled: - * - foo$[0-9]+ - */ - res = strrchr(s, '$'); - if (res) { - *res = '\0'; - return true; - } - return false; } -- 2.37.2.789.g6183377224-goog
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