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"The section should be marked as not loadable" on https://sourceware.org/binutils/docs/ld/Output-Section-Type.html is outdated for ELF.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 596b0474d3d9] Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm64/kernel/module.lds | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/arch/arm64/kernel/module.lds +++ b/arch/arm64/kernel/module.lds @@ -1,5 +1,5 @@ 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) } }
