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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=GkFr0u14154TKCLNsFsUNWuX9c3ApyttswFdMFuJ7qM=; b=Tmx9bQqWDeQCTWoP6y+i/v4FrcEpIIuq+SQRpBHozMt0V78FhKM62Tu6dtJ8mMPbxk oHNVPd2qE1KB4LNtAS2KcGl79UYMVlSQB9IYSP01283zp8biWWv0XUImvRo6DWe06wCQ i/hvHBLYlI6jOBtkRAobkNSpE+BmZ+PLdmpmY6lUsul1N+Rev+BSDdqPNUaE3boxVWY3 uhQPiWRjIZEoY87Ag1a8/OsqTm6yGVyFUnFVIJes9aPwkqubOeif0xm/y4KuwA+tORYe uJxlGVf/0SQiUuHLRjIPzph/27zKH9IkTSWrL7yYCfGCtyr2Ljp2ErNf4GPaOKTEcypP HEbg== X-Gm-Message-State: AOAM530DUK8TocfyFN7v+5ghxVp8lsUT+Sv2YS1pR0XAY9vBGcWhq8PK Ud1cmyKqAc5dmQGbNSd99lnPjeBMCJiFfVux X-Google-Smtp-Source: ABdhPJy+Em8K3byHGlsLgNIzvAr8pDHSt17yd+2X1s/6Oyq+9Qs/ZOC0L9tbCW7Fl74HrEKfzwW5BXUoN41l2Qv2 X-Received: from andreyknvl3.muc.corp.google.com ([2a00:79e0:15:13:7220:84ff:fe09:7e9d]) (user=andreyknvl job=sendgmr) by 2002:a05:6214:9a9:: with SMTP id du9mr1076956qvb.47.1606162156981; Mon, 23 Nov 2020 12:09:16 -0800 (PST) Date: Mon, 23 Nov 2020 21:07:46 +0100 In-Reply-To: Message-Id: <0b8cd898a49ba0c9574f822c87e351ea567a80d3.1606161801.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.29.2.454.gaff20da3a2-goog Subject: [PATCH mm v11 22/42] kasan, arm64: don't allow SW_TAGS with ARM64_MTE From: Andrey Konovalov To: Andrew Morton Cc: Catalin Marinas , Will Deacon , Vincenzo Frascino , Dmitry Vyukov , Andrey Ryabinin , Alexander Potapenko , Marco Elver , Evgenii Stepanov , Branislav Rankov , Kevin Brodsky , kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrey Konovalov X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 Reviewed-by: Alexander Potapenko --- 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 629a293cc408..026aaa64a7e0 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -135,7 +135,7 @@ 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_KFENCE select HAVE_ARCH_KGDB select HAVE_ARCH_MMAP_RND_BITS