From: Raphael Gault <raphael.gault@arm.com> To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: jpoimboe@redhat.com, peterz@infradead.org, catalin.marinas@arm.com, will.deacon@arm.com, julien.thierry@arm.com, Raphael Gault <raphael.gault@arm.com> Subject: [RFC V3 15/18] arm64: kernel: Add exception on kuser32 to prevent stack analysis Date: Mon, 24 Jun 2019 10:55:45 +0100 [thread overview] Message-ID: <20190624095548.8578-16-raphael.gault@arm.com> (raw) In-Reply-To: <20190624095548.8578-1-raphael.gault@arm.com> kuser32 being used for compatibility, it contains a32 instructions which are not recognised by objtool when trying to analyse arm64 object files. Thus, we add an exception to skip validation on this particular file. Signed-off-by: Raphael Gault <raphael.gault@arm.com> --- arch/arm64/kernel/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 478491f07b4f..1239c7da4c02 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -33,6 +33,9 @@ ifneq ($(CONFIG_COMPAT_VDSO), y) obj-$(CONFIG_COMPAT) += sigreturn32.o endif obj-$(CONFIG_KUSER_HELPERS) += kuser32.o + +OBJECT_FILES_NON_STANDARD_kuser32.o := y + obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Raphael Gault <raphael.gault@arm.com> To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: julien.thierry@arm.com, peterz@infradead.org, catalin.marinas@arm.com, will.deacon@arm.com, Raphael Gault <raphael.gault@arm.com>, jpoimboe@redhat.com Subject: [RFC V3 15/18] arm64: kernel: Add exception on kuser32 to prevent stack analysis Date: Mon, 24 Jun 2019 10:55:45 +0100 [thread overview] Message-ID: <20190624095548.8578-16-raphael.gault@arm.com> (raw) In-Reply-To: <20190624095548.8578-1-raphael.gault@arm.com> kuser32 being used for compatibility, it contains a32 instructions which are not recognised by objtool when trying to analyse arm64 object files. Thus, we add an exception to skip validation on this particular file. Signed-off-by: Raphael Gault <raphael.gault@arm.com> --- arch/arm64/kernel/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 478491f07b4f..1239c7da4c02 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -33,6 +33,9 @@ ifneq ($(CONFIG_COMPAT_VDSO), y) obj-$(CONFIG_COMPAT) += sigreturn32.o endif obj-$(CONFIG_KUSER_HELPERS) += kuser32.o + +OBJECT_FILES_NON_STANDARD_kuser32.o := y + obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-06-24 9:56 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-06-24 9:55 [RFC V3 00/18] objtool: Add support for arm64 Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 01/18] objtool: Add abstraction for computation of symbols offsets Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 02/18] objtool: orc: Refactor ORC API for other architectures to implement Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 03/18] objtool: Move registers and control flow to arch-dependent code Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 04/18] objtool: arm64: Add required implementation for supporting the aarch64 architecture in objtool Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 05/18] objtool: special: Adapt special section handling Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 06/18] objtool: arm64: Adapt the stack frame checks for arm architecture Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 07/18] objtool: Introduce INSN_UNKNOWN type Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 08/18] objtool: Refactor switch-tables code to support other architectures Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 09/18] gcc-plugins: objtool: Add plugin to detect switch table on arm64 Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 10/18] objtool: arm64: Implement functions to add switch tables alternatives Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 11/18] arm64: alternative: Mark .altinstr_replacement as containing executable instructions Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-07-01 14:51 ` Catalin Marinas 2019-07-01 14:51 ` Catalin Marinas 2019-06-24 9:55 ` [RFC V3 12/18] arm64: assembler: Add macro to annotate asm function having non standard stack-frame Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-07-01 14:40 ` Catalin Marinas 2019-07-01 14:40 ` Catalin Marinas 2019-07-02 9:49 ` Raphael Gault 2019-07-02 9:49 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 13/18] arm64: sleep: Prevent stack frame warnings from objtool Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 14/18] arm64: kvm: Annotate non-standard stack frame functions Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` Raphael Gault [this message] 2019-06-24 9:55 ` [RFC V3 15/18] arm64: kernel: Add exception on kuser32 to prevent stack analysis Raphael Gault 2019-06-24 9:55 ` [RFC V3 16/18] arm64: crypto: Add exceptions for crypto object " Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 17/18] arm64: kernel: Annotate non-standard stack frame functions Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-06-24 9:55 ` [RFC V3 18/18] objtool: arm64: Enable stack validation for arm64 Raphael Gault 2019-06-24 9:55 ` Raphael Gault 2019-07-10 7:31 ` [RFC V3 00/18] objtool: Add support " Raphael Gault 2019-07-10 7:31 ` Raphael Gault 2019-07-10 14:33 ` Josh Poimboeuf 2019-07-10 14:33 ` Josh Poimboeuf
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20190624095548.8578-16-raphael.gault@arm.com \ --to=raphael.gault@arm.com \ --cc=catalin.marinas@arm.com \ --cc=jpoimboe@redhat.com \ --cc=julien.thierry@arm.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=peterz@infradead.org \ --cc=will.deacon@arm.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.