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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=4apKHH+0KXGOaGE6jTeN52LWOcENawq8hrV28HQBrcA=; b=BCy/qKvqxRkqp3FNyorWwcwtz9HIM06d5rij1sxBRh4Bnbf+SFPpPfJXDLvwEcs/g8 TMbfSQFrraLC8+w46AS/BDvtV32T78O4WUZag86/Y3bFkbbld+MdoeI4vFjsdJNPJlNU 5YoIe2lA34FI8Jay9T+R7twljUEsmrVASftqg2mv3ouRoXhoiEx0EeCsXsBpQgmKMJcX ydG+dw8umULQQDAdTRk3vKoUTjW3MR3csSwe6Gr+tUYj/BSX1ZUjCZpoRQyNrt1a38yI 9UPE+nZP6Toq1uwxLkjF4EaKlCPmuNtWoJkEyuYOXqS21BJp9Aki10FzZ3O8d5RlP2T3 CojA== X-Gm-Message-State: AGi0Pua4cmuCgJjeTXuBKiYrJ4cDthIfDEen5vRoMPv9DEVHaZ5hUKFW S+bE5NHUPwnu0EljQKZAQ8ov01iv679y+Fmd5AQ= X-Google-Smtp-Source: APiQypK5eLQJG4otrid1fZuEbwfLIfGLtaeCQl5ykKUwyTbJ+T2+3uqzOPYi+Sh8FFR75wCHX7LWfP4FZsjp9J54Zb4= X-Received: by 2002:a63:9043:: with SMTP id a64mr22525247pge.308.1586191316557; Mon, 06 Apr 2020 09:41:56 -0700 (PDT) Date: Mon, 6 Apr 2020 09:41:17 -0700 In-Reply-To: <20200406164121.154322-1-samitolvanen@google.com> Message-Id: <20200406164121.154322-9-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20200406164121.154322-1-samitolvanen@google.com> X-Mailer: git-send-email 2.26.0.292.g33ef6b2f38-goog Subject: [PATCH v10 08/12] arm64: vdso: disable Shadow Call Stack From: Sami Tolvanen To: Will Deacon , Catalin Marinas , James Morse , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Mark Rutland X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200406_094158_219120_29AC692E X-CRM114-Status: GOOD ( 10.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kees Cook , Jann Horn , Masahiro Yamada , Marc Zyngier , kernel-hardening@lists.openwall.com, Nick Desaulniers , linux-kernel@vger.kernel.org, Miguel Ojeda , clang-built-linux@googlegroups.com, Sami Tolvanen , Laura Abbott , Dave Martin , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Shadow stacks are only available in the kernel, so disable SCS instrumentation for the vDSO. Signed-off-by: Sami Tolvanen Reviewed-by: Nick Desaulniers Reviewed-by: Kees Cook Reviewed-by: Mark Rutland Acked-by: Will Deacon --- arch/arm64/kernel/vdso/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile index dd2514bb1511..a87a4f11724e 100644 --- a/arch/arm64/kernel/vdso/Makefile +++ b/arch/arm64/kernel/vdso/Makefile @@ -25,7 +25,7 @@ ccflags-y += -DDISABLE_BRANCH_PROFILING VDSO_LDFLAGS := -Bsymbolic -CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os +CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) KBUILD_CFLAGS += $(DISABLE_LTO) KASAN_SANITIZE := n UBSAN_SANITIZE := n -- 2.26.0.292.g33ef6b2f38-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel