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Date: Mon, 27 Jun 2022 13:21:52 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Masahiro Yamada <masahiroy@...nel.org>, Sami Tolvanen <samitolvanen@...gle.com>, Nick Desaulniers <ndesaulniers@...gle.com> Subject: [PATCH 5.10 101/102] kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS (2nd attempt) From: Masahiro Yamada <masahiroy@...nel.org> commit 53632ba87d9f302a8d97a11ec2f4f4eec7bb75ea upstream. If CONFIG_TRIM_UNUSED_KSYMS is enabled and the kernel is built from a pristine state, the vmlinux is linked twice. Commit 3fdc7d3fe4c0 ("kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS") explains why this happens, but it did not fix the issue at all. Now I realized I had applied a wrong patch. In v1 patch [1], the autoksyms_recursive target correctly recurses to "$(MAKE) -f $(srctree)/Makefile autoksyms_recursive". In v2 patch [2], I accidentally dropped the diff line, and it recurses to "$(MAKE) -f $(srctree)/Makefile vmlinux". Restore the code I intended in v1. [1]: https://lore.kernel.org/linux-kbuild/1521045861-22418-8-git-send-email-yamada.masahiro@socionext.com/ [2]: https://lore.kernel.org/linux-kbuild/1521166725-24157-8-git-send-email-yamada.masahiro@socionext.com/ Fixes: 3fdc7d3fe4c0 ("kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS") Signed-off-by: Masahiro Yamada <masahiroy@...nel.org> Tested-by: Sami Tolvanen <samitolvanen@...gle.com> Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/Makefile +++ b/Makefile @@ -1156,7 +1156,7 @@ KBUILD_MODULES := 1 autoksyms_recursive: descend modules.order $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ - "$(MAKE) -f $(srctree)/Makefile vmlinux" + "$(MAKE) -f $(srctree)/Makefile autoksyms_recursive" endif autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h)
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