Messages in this thread Patch in this message | | | From | Kees Cook <> | Subject | [PATCH v6 02/29] vmlinux.lds.h: Add .gnu.version* to COMMON_DISCARDS | Date | Fri, 21 Aug 2020 12:42:43 -0700 |
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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 184b23d62784..f1f02a2f71b7 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -957,7 +957,9 @@ #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
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