From: Joey Gouly <joey.gouly@arm.com>
To: <linux-arm-kernel@lists.infradead.org>
Cc: <nd@arm.com>, <catalin.marinas@arm.com>, <joey.gouly@arm.com>,
<keescook@chromium.org>, <masahiroy@kernel.org>,
<vincenzo.frascino@arm.com>, <will@kernel.org>
Subject: [PATCH v2 2/2] arm64: vdso: enable orphan handling for VDSO
Date: Thu, 7 Apr 2022 11:13:04 +0100 [thread overview]
Message-ID: <20220407101304.539-3-joey.gouly@arm.com> (raw)
In-Reply-To: <20220407101304.539-1-joey.gouly@arm.com>
Like vmlinux, enable orphan-handling for the VDSO. This can catch
subtle errors that might arise from unexpected sections being included.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Kees Cook <keescook@chromium.org>
---
arch/arm64/kernel/vdso/Makefile | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile
index 172452f79e46..623d9ad2c717 100644
--- a/arch/arm64/kernel/vdso/Makefile
+++ b/arch/arm64/kernel/vdso/Makefile
@@ -24,7 +24,13 @@ btildflags-$(CONFIG_ARM64_BTI_KERNEL) += -z force-bti
# routines, as x86 does (see 6f121e548f83 ("x86, vdso: Reimplement vdso.so
# preparation in build-time C")).
ldflags-y := -shared -soname=linux-vdso.so.1 --hash-style=sysv \
- -Bsymbolic --build-id=sha1 -n $(btildflags-y) -T
+ -Bsymbolic --build-id=sha1 -n $(btildflags-y)
+
+ifdef CONFIG_LD_ORPHAN_WARN
+ ldflags-y += --orphan-handling=warn
+endif
+
+ldflags-y += -T
ccflags-y := -fno-common -fno-builtin -fno-stack-protector -ffixed-x18
ccflags-y += -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO
--
2.17.1
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next prev parent reply other threads:[~2022-04-07 10:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-07 10:13 [PATCH v2 0/2] Enable orphan-handling=warn for VDSO Joey Gouly
2022-04-07 10:13 ` [PATCH v2 1/2] arm64: vdso: put ELF related sections in the linker script Joey Gouly
2022-04-07 16:49 ` Kees Cook
2022-04-08 7:18 ` Vincenzo Frascino
2022-04-07 10:13 ` Joey Gouly [this message]
2022-04-07 16:49 ` [PATCH v2 2/2] arm64: vdso: enable orphan handling for VDSO Kees Cook
2022-04-08 7:20 ` Vincenzo Frascino
2022-04-08 7:22 ` [PATCH v2 0/2] Enable orphan-handling=warn " Vincenzo Frascino
2022-04-12 10:04 ` Joey Gouly
2022-04-12 10:05 ` Vincenzo Frascino
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