| From | Kees Cook <> | Subject | [PATCH v5 09/36] vmlinux.lds.h: Add .gnu.version* to COMMON_DISCARDS | Date | Fri, 31 Jul 2020 16:07:53 -0700 |
| |
For vmlinux linking, no architecture uses the .gnu.version* sections, so remove it via the COMMON_DISCARDS macro in preparation for adding --orphan-handling=warn more widely. This is a work-around for what appears to be a bug[1] in ld.bfd which warns for this synthetic section even when none is found in input objects, and even when no section is emitted for an output object[2].
[1] https://sourceware.org/bugzilla/show_bug.cgi?id=26153 [2] https://lore.kernel.org/lkml/202006221524.CEB86E036B@keescook/
Reviewed-by: Fangrui Song <maskray@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> --- include/asm-generic/vmlinux.lds.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index ff65a20faf4c..22985cf02130 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -933,7 +933,9 @@ #define COMMON_DISCARDS \ *(.discard) \ *(.discard.*) \ - *(.modinfo) + *(.modinfo) \ + /* ld.bfd warns about .gnu.version* even when not emitted */ \ + *(.gnu.version*) \ #define DISCARDS \ /DISCARD/ : { \ -- 2.25.1
|