[PATCH v6 27/29] x86/boot/compressed: Remove, discard, or assert for unwanted sections

[Arvind Sankar]

On Fri, Aug 21, 2020 at 12:43:08PM -0700, Kees Cook wrote:
> In preparation for warning on orphan sections, stop the linker from
> generating the .eh_frame* sections, discard unwanted non-zero-sized
> generated sections, and enforce other expected-to-be-zero-sized sections
> (since discarding them might hide problems with them suddenly gaining
> unexpected entries).
> 
> Signed-off-by: Kees Cook <keescook at chromium.org>
>  	.rel.dyn : {
> -		*(.rel.*)
> +		*(.rel.*) *(.rel_*)
>  	}
>  	ASSERT(SIZEOF(.rel.dyn) == 0, "Unexpected run-time relocations (.rel) detected!")
>  
>  	.rela.dyn : {
> -		*(.rela.*)
> +		*(.rela.*) *(.rela_*)
>  	}
>  	ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!")
>  }
> -- 
> 2.25.1
> 

When do you get .rela_?