Re: [PATCH v4 mips-next 4/7] MIPS: vmlinux.lds.S: catch bad .rel.dyn at link time
From: Nathan Chancellor <hidden>
Date: 2021-01-08 21:18:02
Also in:
linux-mips, lkml, stable
On Thu, Jan 07, 2021 at 01:20:33PM +0000, Alexander Lobakin wrote:
Catch any symbols placed in .rel.dyn and check for these sections to be zero-sized at link time. Eliminates following ld warning: mips-alpine-linux-musl-ld: warning: orphan section `.rel.dyn' from `init/main.o' being placed in section `.rel.dyn' Adopted from x86/kernel/vmlinux.lds.S. Suggested-by: Fangrui Song <redacted> Signed-off-by: Alexander Lobakin <redacted>
Reviewed-by: Nathan Chancellor <redacted>
quoted hunk ↗ jump to hunk
--- arch/mips/kernel/vmlinux.lds.S | 11 +++++++++++ 1 file changed, 11 insertions(+)diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index 0f4e46ea4458..0f736d60d43e 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S@@ -226,4 +226,15 @@ SECTIONS *(.pdr) *(.reginfo) } + + /* + * Sections that should stay zero sized, which is safer to + * explicitly check instead of blindly discarding. + */ + + .rel.dyn : { + *(.rel.*) + *(.rel_*) + } + ASSERT(SIZEOF(.rel.dyn) == 0, "Unexpected run-time relocations (.rel) detected!") }-- 2.30.0