Messages in this thread Patch in this message | | | From | Ilie Halip <> | Subject | [PATCH v3] x86/boot: discard .eh_frame sections | Date | Tue, 26 Nov 2019 16:45:44 +0200 |
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When using GCC as compiler and LLVM's lld as linker, linking setup.elf fails: LD arch/x86/boot/setup.elf ld.lld: error: init sections too big!
This happens because GCC generates .eh_frame sections for most of the files in that directory, then ld.lld places the merged section before __end_init, triggering an assert in the linker script.
Fix this by discarding the .eh_frame sections, as suggested by Boris. The kernel proper linker script discards them too.
Signed-off-by: Ilie Halip <ilie.halip@gmail.com> Link: https://lore.kernel.org/lkml/20191118175223.GM6363@zn.tnic/ Link: https://github.com/ClangBuiltLinux/linux/issues/760 Suggested-by: Borislav Petkov <bp@alien8.de> ---
Changes in V3: * discard .eh_frame instead of placing it after .rodata
Changes in V2: * removed wildcard for input sections (.eh_frame* -> .eh_frame)
arch/x86/boot/setup.ld | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/x86/boot/setup.ld b/arch/x86/boot/setup.ld index 0149e41d42c2..3da1c37c6dd5 100644 --- a/arch/x86/boot/setup.ld +++ b/arch/x86/boot/setup.ld @@ -51,7 +51,10 @@ SECTIONS . = ALIGN(16); _end = .; - /DISCARD/ : { *(.note*) } + /DISCARD/ : { + *(.eh_frame) + *(.note*) + } /* * The ASSERT() sink to . is intentional, for binutils 2.14 compatibility: -- 2.17.1
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