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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=BiHYmAAiH626N89XqxkZXfyE7gUyoYuU5gV65m3nGjQ=; b=f9CKM9wjRMAuQwo75U6aBrGpaIpSPcmhM36CzAju3I9VuuVxsklP4AGcUBy91i1ThZ 1sksMaRby6rkgV/9EwnZOUVQpCz/DWY7qFrpZuYNEWsTcXo7aGtevMy8Iy6kCJ3N0E35 87KJoXMlvYsVAa6lELTVwfUVPU5YY0lONkynYEUPBIc/3WerZFkwdho8Z0paYpCKPwDR dUKb53+eEW8px4o6+hU+sGCBUI0akiitizdUsJ9W6D4sM53Cl5tbSjJ2M03ylUXjzFHa uYzEJkXpURuUSFprcJ52AeoMvdhzNMBnbXPqv78qYLL/+0VlST7ir+rmrN/lYVpkZsqG X+Ag== X-Gm-Message-State: AOAM5318OSNda5ZbKKcqra+fO2CWQoi8n20ejf9Rzey9934ZmFhFQWE5 UBSzNxifTu1X6GJYD6NRhbYGKrexmUXH92g4klY= X-Google-Smtp-Source: ABdhPJyHPiE5GePYAvaEya8u/0CvrCAAGbNDB2zBtM4hELH+YYZewJMzkdHOHE7lBNk0pBM71xtMSBAsdjBdBJfED8o= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a17:90a:7c0c:: with SMTP id v12mr5366318pjf.71.1602260062781; Fri, 09 Oct 2020 09:14:22 -0700 (PDT) Date: Fri, 9 Oct 2020 09:13:30 -0700 In-Reply-To: <20201009161338.657380-1-samitolvanen@google.com> Message-Id: <20201009161338.657380-22-samitolvanen@google.com> Mime-Version: 1.0 References: <20201009161338.657380-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.1011.ga647a8990f-goog Subject: [PATCH v5 21/29] drivers/misc/lkdtm: disable LTO for rodata.o From: Sami Tolvanen To: Masahiro Yamada , Will Deacon , Steven Rostedt X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201009_121426_970690_397C5B76 X-CRM114-Status: GOOD ( 11.39 ) 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: linux-arch@vger.kernel.org, x86@kernel.org, Kees Cook , "Paul E. McKenney" , kernel-hardening@lists.openwall.com, Peter Zijlstra , Greg Kroah-Hartman , linux-kbuild@vger.kernel.org, Nick Desaulniers , linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, Sami Tolvanen , linux-pci@vger.kernel.org, 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+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Disable LTO for rodata.o to allow objcopy to be used to manipulate sections. Signed-off-by: Sami Tolvanen Acked-by: Kees Cook --- drivers/misc/lkdtm/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/misc/lkdtm/Makefile b/drivers/misc/lkdtm/Makefile index c70b3822013f..dd4c936d4d73 100644 --- a/drivers/misc/lkdtm/Makefile +++ b/drivers/misc/lkdtm/Makefile @@ -13,6 +13,7 @@ lkdtm-$(CONFIG_LKDTM) += cfi.o KASAN_SANITIZE_stackleak.o := n KCOV_INSTRUMENT_rodata.o := n +CFLAGS_REMOVE_rodata.o += $(CC_FLAGS_LTO) OBJCOPYFLAGS := OBJCOPYFLAGS_rodata_objcopy.o := \ -- 2.28.0.1011.ga647a8990f-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel