[PATCH v5 19/22] x86/tools/relocs: Ignore __kcfi_typeid_ relocations
From: Sami Tolvanen <samitolvanen@google.com>
Date: 2022-09-08 21:57:45
Also in:
linux-hardening, lkml, llvm
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
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 relocs. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <redacted> Tested-by: Kees Cook <redacted> Tested-by: Nathan Chancellor <nathan@kernel.org> --- arch/x86/tools/relocs.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index e2c5b296120d..2925074b9a58 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c@@ -56,6 +56,7 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = { "^(xen_irq_disable_direct_reloc$|" "xen_save_fl_direct_reloc$|" "VDSO|" + "__kcfi_typeid_|" "__crc_)", /*
--
2.37.2.789.g6183377224-goog
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