When linking aspeed_g5_defconfig with ld.lld 10.0.1, the following error occurs:
ld.lld: error: .tmp_vmlinux.kallsyms1:(.ARM.exidx+0x34D98): relocation R_ARM_PREL31 out of range: 2135538592 is not in [-1073741824, 1073741823] This was resolved in ld.lld 11.0.0 but the minimum supported version of ld.lld for the kernel is 10.0.1. Prevent CONFIG_UNWINDER_ARM from being selected in this case so that the problematic sections cannot be created. Link: https://github.com/ClangBuiltLinux/linux/issues/732 Link: https://github.com/llvm/llvm-project/commit/48aebfc908ba7b9372aaa478a9c200789491096e Suggested-by: Nick Desaulniers <ndesaulni...@google.com> Signed-off-by: Nathan Chancellor <nat...@kernel.org> --- arch/arm/Kconfig.debug | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 9e0b5e7f12af..64c1f8a46ab5 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -66,6 +66,8 @@ config UNWINDER_FRAME_POINTER config UNWINDER_ARM bool "ARM EABI stack unwinder" depends on AEABI && !FUNCTION_GRAPH_TRACER + # https://github.com/ClangBuiltLinux/linux/issues/732 + depends on !LD_IS_LLD || LLD_VERSION >= 110000 select ARM_UNWIND help This option enables stack unwinding support in the kernel base-commit: a38fd8748464831584a19438cbb3082b5a2dab15 -- 2.31.0.rc1
