From: "tip-bot2 for Kees Cook" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>, Ingo Molnar <mingo@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>, x86 <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [tip: core/build] x86/build: Warn on orphan section placement
Date: Mon, 07 Sep 2020 06:05:50 -0000 [thread overview]
Message-ID: <159945875070.20229.5266595565501285727.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20200902025347.2504702-5-keescook@chromium.org>
The following commit has been merged into the core/build branch of tip:
Commit-ID: 83109d5d5fba7abf362f5a443c9f4c4ea10bbc8d
Gitweb: https://git.kernel.org/tip/83109d5d5fba7abf362f5a443c9f4c4ea10bbc8d
Author: Kees Cook <keescook@chromium.org>
AuthorDate: Tue, 01 Sep 2020 19:53:46 -07:00
Committer: Ingo Molnar <mingo@kernel.org>
CommitterDate: Thu, 03 Sep 2020 10:28:36 +02:00
x86/build: Warn on orphan section placement
We don't want to depend on the linker's orphan section placement
heuristics as these can vary between linkers, and may change between
versions. All sections need to be explicitly handled in the linker script.
Now that all sections are explicitly handled, enable orphan section
warnings.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20200902025347.2504702-5-keescook@chromium.org
---
arch/x86/Makefile | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 4346ffb..154259f 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -209,6 +209,10 @@ ifdef CONFIG_X86_64
LDFLAGS_vmlinux += -z max-page-size=0x200000
endif
+# We never want expected sections to be placed heuristically by the
+# linker. All sections should be explicitly named in the linker script.
+LDFLAGS_vmlinux += $(call ld-option, --orphan-handling=warn)
+
archscripts: scripts_basic
$(Q)$(MAKE) $(build)=arch/x86/tools relocs
next prev parent reply other threads:[~2020-09-07 6:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-02 2:53 [PATCH v7 0/5] Warn on orphan section placement Kees Cook
2020-09-02 2:53 ` [PATCH v7 1/5] arm64/build: " Kees Cook
2020-09-07 6:05 ` [tip: core/build] " tip-bot2 for Kees Cook
2020-09-02 2:53 ` [PATCH v7 2/5] arm/build: " Kees Cook
2020-09-07 6:05 ` [tip: core/build] " tip-bot2 for Kees Cook
2020-09-02 2:53 ` [PATCH v7 3/5] arm/boot: " Kees Cook
2020-09-07 6:05 ` [tip: core/build] " tip-bot2 for Kees Cook
2020-09-02 2:53 ` [PATCH v7 4/5] x86/build: " Kees Cook
2020-09-05 22:48 ` Arvind Sankar
2020-09-08 20:17 ` Arvind Sankar
2020-09-07 6:05 ` tip-bot2 for Kees Cook [this message]
2020-09-02 2:53 ` [PATCH v7 5/5] x86/boot/compressed: " Kees Cook
2020-09-07 6:05 ` [tip: core/build] " tip-bot2 for Kees Cook
2020-09-02 19:04 ` [PATCH v7 0/5] " Nick Desaulniers
2020-09-04 5:58 ` Ingo Molnar
2020-09-04 18:20 ` Kees Cook
2020-09-06 7:24 ` Ingo Molnar
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