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Thu, 14 Apr 2022 10:46:29 +0000 From: Joey Gouly To: CC: , , , , , , Subject: [PATCH v4 2/4] arm64: vdso: enable orphan handling for VDSO Date: Thu, 14 Apr 2022 11:46:09 +0100 Message-ID: <20220414104611.17748-3-joey.gouly@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220414104611.17748-1-joey.gouly@arm.com> References: <20220414104611.17748-1-joey.gouly@arm.com> MIME-Version: 1.0 X-EOPAttributedMessage: 1 X-MS-Office365-Filtering-Correlation-Id: df5d42a6-5322-4686-12eb-08da1e040eb1 X-MS-TrafficTypeDiagnostic: DB8PR08MB5482:EE_|DB5EUR03FT028:EE_|PAXPR08MB6893:EE_ X-Microsoft-Antispam-PRVS: x-checkrecipientrouted: true NoDisclaimer: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0; X-Microsoft-Antispam-Message-Info-Original: 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 X-Forefront-Antispam-Report-Untrusted: CIP:40.67.248.234; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 Cc: Catalin Marinas Cc: Will Deacon Cc: Masahiro Yamada Cc: Vincenzo Frascino Cc: Kees Cook Reviewed-by: Kees Cook Reviewed-by: Vincenzo Frascino --- 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel