From 7411cfc3c91a08a884463bbc7623087ecc2efdd8 Mon Sep 17 00:00:00 2001 From: Nathan Chancellor Date: Thu, 25 Mar 2021 21:04:40 +0100 Subject: ARM: 9070/1: Make UNWINDER_ARM depend on ld.bfd or ld.lld 11.0.0+ 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 Signed-off-by: Nathan Chancellor Reviewed-by: Nick Desaulniers Signed-off-by: Russell King --- arch/arm/Kconfig.debug | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/arm/Kconfig.debug') diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 36016497b1b3..7902bc2096e0 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 -- cgit v1.2.3