From: Kees Cook Date: Fri, 21 Aug 2020 19:42:43 +0000 (-0700) Subject: vmlinux.lds.h: Add .gnu.version* to COMMON_DISCARDS X-Git-Tag: v5.10-rc1~200^2~27 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dfbe69689b4dee19021d8c315a5137b4790b5634;p=thirdparty%2Fkernel%2Flinux.git vmlinux.lds.h: Add .gnu.version* to COMMON_DISCARDS 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/ Signed-off-by: Kees Cook Signed-off-by: Ingo Molnar Reviewed-by: Fangrui Song Cc: linux-arch@vger.kernel.org Link: https://lore.kernel.org/r/20200821194310.3089815-3-keescook@chromium.org --- diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 184b23d627845..f1f02a2f71b70 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/ : { \