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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=hmgLBwrpZmM2Ob1pVeE+PUpkn+sXRrzyuWPTws3FeSQ=; b=tfspq8109LcPd/Xtcg2Mo+WsQk94MEJs3hfDqJk/PV2TItTuynt95Pv/T/kL9fYBGg Nve/K33kBluaapfC9T6k3jm+l1CWizkC4cciWrGJQDKGX1Pr+g8epkoUqb1OAM4TRiol jJTSzp7JqxI69Y9boAZQCPkmZMkvAkkoPYcBPvASdlL6HZ2fVnNSb0mRzJUZR3VXATcX 0wdxcYKTmLQvxkr2rk4DmCRXw9G758grFv4qo3UbL3hAqN1sgA88KlazNAV1RpeTB4Ob Jp8xKjIFUpp74nEjLxky0gb6QjhdCOOw2YG+jihez9octLvpQMzJ5b2D7cfRXZWuZHv3 96Ng== X-Gm-Message-State: AOAM531NBJQeIB7nuIRzAAbWaBUaZVQFSBR4e/Oe1weIqrwwpVqbnGz7 64tieeHh/7qwVJu8sdqyqpdsR4KVCxAQdYhF X-Google-Smtp-Source: ABdhPJxb7i5v0jMUlh3xUTuo7OjkcEywxPvKLWy6o8r8H6DQV0pJn2YQ8FY2iCVwP2F1TqOCRkULDSCdIS/3O9eG X-Received: from andreyknvl3.muc.corp.google.com ([2a00:79e0:15:13:7220:84ff:fe09:7e9d]) (user=andreyknvl job=sendgmr) by 2002:a05:6214:2ed:: with SMTP id h13mr5419776qvu.26.1603999640531; Thu, 29 Oct 2020 12:27:20 -0700 (PDT) Date: Thu, 29 Oct 2020 20:25:51 +0100 In-Reply-To: Message-Id: <8730eee8f88eafbb3148458ea8d2f55c89a94fbf.1603999489.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.29.1.341.ge80a0c044ae-goog Subject: [PATCH v6 30/40] kasan, arm64: don't allow SW_TAGS with ARM64_MTE From: Andrey Konovalov To: Catalin Marinas , Will Deacon X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201029_192725_923598_E937D21E X-CRM114-Status: GOOD ( 10.72 ) 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-arm-kernel@lists.infradead.org, Marco Elver , Elena Petrova , Andrey Konovalov , Kevin Brodsky , Branislav Rankov , kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Alexander Potapenko , Evgenii Stepanov , Andrey Ryabinin , Andrew Morton , Vincenzo Frascino , Dmitry Vyukov Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Software tag-based KASAN provides its own tag checking machinery that can conflict with MTE. Don't allow enabling software tag-based KASAN when MTE is enabled. Signed-off-by: Andrey Konovalov Signed-off-by: Vincenzo Frascino Reviewed-by: Catalin Marinas --- Change-Id: Icd29bd0c6b1d3d7a0ee3d50c20490f404d34fc97 --- arch/arm64/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 9f13ab297b7a..9e5049ffa160 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -134,7 +134,7 @@ config ARM64 select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48) - select HAVE_ARCH_KASAN_SW_TAGS if HAVE_ARCH_KASAN + select HAVE_ARCH_KASAN_SW_TAGS if (HAVE_ARCH_KASAN && !ARM64_MTE) select HAVE_ARCH_KGDB select HAVE_ARCH_MMAP_RND_BITS select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT