[PATCH 5.10 167/171] arm64: module: remove (NOLOAD) from linker script

From: Greg Kroah-Hartman
Date: Tue Apr 12 2022 - 03:15:47 EST


From: Fangrui Song <maskray@xxxxxxxxxx>

commit 4013e26670c590944abdab56c4fa797527b74325 upstream.

On ELF, (NOLOAD) sets the section type to SHT_NOBITS[1]. It is conceptually
inappropriate for .plt and .text.* sections which are always
SHT_PROGBITS.

In GNU ld, if PLT entries are needed, .plt will be SHT_PROGBITS anyway
and (NOLOAD) will be essentially ignored. In ld.lld, since
https://reviews.llvm.org/D118840 ("[ELF] Support (TYPE=<value>) to
customize the output section type"), ld.lld will report a `section type
mismatch` error. Just remove (NOLOAD) to fix the error.

[1] https://lld.llvm.org/ELF/linker_script.html As of today, "The
section should be marked as not loadable" on
https://sourceware.org/binutils/docs/ld/Output-Section-Type.html is
outdated for ELF.

Tested-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Reported-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Signed-off-by: Fangrui Song <maskray@xxxxxxxxxx>
Acked-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220218081209.354383-1-maskray@xxxxxxxxxx
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
[nathan: Fix conflicts due to lack of 1cbdf60bd1b7]
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/module.lds.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

--- a/arch/arm64/include/asm/module.lds.h
+++ b/arch/arm64/include/asm/module.lds.h
@@ -1,7 +1,7 @@
#ifdef CONFIG_ARM64_MODULE_PLTS
SECTIONS {
- .plt 0 (NOLOAD) : { BYTE(0) }
- .init.plt 0 (NOLOAD) : { BYTE(0) }
- .text.ftrace_trampoline 0 (NOLOAD) : { BYTE(0) }
+ .plt 0 : { BYTE(0) }
+ .init.plt 0 : { BYTE(0) }
+ .text.ftrace_trampoline 0 : { BYTE(0) }
}
#endif