From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx49E1EsNvHj30y7qjkkvB7m9LGp1u/MaNrVkYPgB7N+R3neoDhTcvw2aDQczgHC/ZVh1GeFW ARC-Seal: i=1; a=rsa-sha256; t=1522671904; cv=none; d=google.com; s=arc-20160816; b=aaueX4EyU0PuRUC9E+/24JOgNv29WBpNVOybCTTv0G4u00GFK/9IwAbbFjZ9kLysj1 QY0nNZuHkKAl/SKtwCZIuFyVvz1NBpB/s6j9RSS+h5+efKNz8ZnkCzTvjRDfM85EA0cC rWSDu4bldRS2ce9/8QAaqNXDXnKu+pZ8/KbHg/JaVM4c7B0XZdgWJX6jxL8ZR7hEA27j UBILCjeIEA2w66qBXP+F0Uk8AAU8B6i04m8hl3QIEHyodSGFcgI91ZyxpXsIxCcwsP3y sMF+PgqiPT89+bYys00nHy4V3eS3/z7bGXzc5rfhQbZQfUq4QKkQr3NxzMrE/341pY6A oZ9w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:references:in-reply-to:message-id:date:subject:to:from :arc-authentication-results; bh=53Fp4WTPSxm9in+fys+oCx87HpMIeXTLmZmGB/nUx14=; b=cSQHCe84gwhLIskzijC0WGfCdP1wnOwU/7BCBD/lczJBJgBXIPq7jL0esVWi6FnJK5 tuGET0robeqeKGRE79r017UFl7OXvSqOSVsj2tLFCW2x/uhm/ceKiv2DgUsX3iFKqO3v 8rvggIeSMTYt0b8vJB8+beSCHkBARV1MzBTW515zccOJcAzh083xg+AcbYqjyt4sedrB A5/VrGXdhas9sZffJ/GWRzWUTKVR4ZAnOWsf9E4BEtEChkKF9XwklzaB+d5zwkhNv6Ww Rt0jGjuL3SgwLCT6au4V+ySrUR9ipFdRu0D0Jx1DxSY39m8OBxSB3L7gMFO7T6hIAM9J hh+w== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of liuwenliang@huawei.com designates 45.249.212.35 as permitted sender) smtp.mailfrom=liuwenliang@huawei.com Authentication-Results: mx.google.com; spf=pass (google.com: domain of liuwenliang@huawei.com designates 45.249.212.35 as permitted sender) smtp.mailfrom=liuwenliang@huawei.com From: Abbott Liu To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 2/6] Disable instrumentation for some code Date: Mon, 2 Apr 2018 20:04:36 +0800 Message-ID: <20180402120440.31900-3-liuwenliang@huawei.com> X-Mailer: git-send-email 2.9.0 In-Reply-To: <20180402120440.31900-1-liuwenliang@huawei.com> References: <20180402120440.31900-1-liuwenliang@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.187.223] X-CFilter-Loop: Reflected X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1596637215509017214?= X-GMAIL-MSGID: =?utf-8?q?1596637215509017214?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Andrey Ryabinin Disable instrumentation for arch/arm/boot/compressed/* ,arch/arm/kvm/hyp/* and arch/arm/vdso/* because those code won't linkd with kernel image. Disable kasan check in the function unwind_pop_register because it doesn't matter that kasan checks failed when unwind_pop_register read stack memory of task. Reviewed-by: Russell King - ARM Linux Reviewed-by: Florian Fainelli Reviewed-by: Marc Zyngier Tested-by: Joel Stanley Tested-by: Florian Fainelli Tested-by: Abbott Liu Signed-off-by: Abbott Liu --- arch/arm/boot/compressed/Makefile | 1 + arch/arm/kernel/unwind.c | 3 ++- arch/arm/kvm/hyp/Makefile | 4 ++++ arch/arm/vdso/Makefile | 2 ++ 4 files changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 45a6b9b..966103e 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -24,6 +24,7 @@ OBJS += hyp-stub.o endif GCOV_PROFILE := n +KASAN_SANITIZE := n # # Architecture dependencies diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c index 0bee233..2e55c7d 100644 --- a/arch/arm/kernel/unwind.c +++ b/arch/arm/kernel/unwind.c @@ -249,7 +249,8 @@ static int unwind_pop_register(struct unwind_ctrl_block *ctrl, if (*vsp >= (unsigned long *)ctrl->sp_high) return -URC_FAILURE; - ctrl->vrs[reg] = *(*vsp)++; + ctrl->vrs[reg] = READ_ONCE_NOCHECK(*(*vsp)); + (*vsp)++; return URC_OK; } diff --git a/arch/arm/kvm/hyp/Makefile b/arch/arm/kvm/hyp/Makefile index 63d6b40..0a8b500 100644 --- a/arch/arm/kvm/hyp/Makefile +++ b/arch/arm/kvm/hyp/Makefile @@ -24,3 +24,7 @@ obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o obj-$(CONFIG_KVM_ARM_HOST) += switch.o CFLAGS_switch.o += $(CFLAGS_ARMV7VE) obj-$(CONFIG_KVM_ARM_HOST) += s2-setup.o + +GCOV_PROFILE := n +KASAN_SANITIZE := n +UBSAN_SANITIZE := n diff --git a/arch/arm/vdso/Makefile b/arch/arm/vdso/Makefile index bb411821..87abbb7 100644 --- a/arch/arm/vdso/Makefile +++ b/arch/arm/vdso/Makefile @@ -30,6 +30,8 @@ CFLAGS_vgettimeofday.o = -O2 # Disable gcov profiling for VDSO code GCOV_PROFILE := n +KASAN_SANITIZE := n + # Force dependency $(obj)/vdso.o : $(obj)/vdso.so -- 2.9.0