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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=zaZ7iYa2nX/LEWBkDi8yCOPbi1dUYelfO4W8YWr1Gms=; b=J96vU2nFKnRJ3mWpjcppenY0n/MZWLsJcxRvDEZKaNAOHuPU/pnvQdWajGEdUCKve3 hLrRwp+dGTaAw315CsmLIQvbpX1f/ULOWCYm2pxWjtcfS+T7yh/9raEau/ONOM+qPCUd 0Hgo4j1LJMyM6EWz5ut2vcpgUVbXFC4pgYH/xvHfj1gDAScatxmTa6AR7nnb85R3LbIf +0Cq8buD05rHjAMM+AFuUHMAc8/XPcedNriQlMIvWRncgrcw2ApTQrhEHSDscb1JNMxw 92P1pxUPdTsr+mDlpfj6L/43o+9TaVnYHveHAyVf0LvoegwRKYJmL5/Pms6ETEnGfASH Eh1g== X-Gm-Message-State: AOAM532ygbVYFGUPwhevuldMx1Ba2ectzZC5nH0ksJufs9PnUAf9Gxev ++IX2Rc/GPi+fgBMxWRnOYaMRoRnFvzQVzr4 X-Google-Smtp-Source: ABdhPJz+QUgec2lUVcmzRzhZbOow06eibxJtc0wMebDet6dJiBG69rlY2XkCGlU46o6OTwczMiNPRY//0VTRByO9 X-Received: from andreyknvl3.muc.corp.google.com ([2a00:79e0:15:13:7220:84ff:fe09:7e9d]) (user=andreyknvl job=sendgmr) by 2002:adf:d4c1:: with SMTP id w1mr1209062wrk.108.1600987894827; Thu, 24 Sep 2020 15:51:34 -0700 (PDT) Date: Fri, 25 Sep 2020 00:50:25 +0200 In-Reply-To: Message-Id: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.681.g6f77f65b4e-goog Subject: [PATCH v3 18/39] kasan: kasan_non_canonical_hook only for software modes From: Andrey Konovalov To: Dmitry Vyukov , Vincenzo Frascino , Catalin Marinas , kasan-dev@googlegroups.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200924_185137_615345_F97C3365 X-CRM114-Status: GOOD ( 13.49 ) X-Spam-Score: -7.7 (-------) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-7.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:44a listed in] [list.dnswl.org] -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM white-list 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.0 DKIMWL_WL_MED DKIMwl.org - Medium trust sender 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: Marco Elver , Elena Petrova , Andrey Konovalov , Kevin Brodsky , Will Deacon , Branislav Rankov , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Alexander Potapenko , linux-arm-kernel@lists.infradead.org, Andrey Ryabinin , Andrew Morton , Evgenii Stepanov Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This is a preparatory commit for the upcoming addition of a new hardware tag-based (MTE-based) KASAN mode. kasan_non_canonical_hook() is only applicable to KASAN modes that use shadow memory, and won't be needed for hardware tag-based KASAN. No functional changes for software modes. Signed-off-by: Andrey Konovalov Signed-off-by: Vincenzo Frascino Reviewed-by: Marco Elver --- Change-Id: Icc9f5ef100a2e86f3a4214a0c3131a68266181b2 --- mm/kasan/report.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 9e4d539d62f4..67aa30b45805 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -371,7 +371,8 @@ bool kasan_report(unsigned long addr, size_t size, bool is_write, return ret; } -#ifdef CONFIG_KASAN_INLINE +#if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \ + defined(CONFIG_KASAN_INLINE) /* * With CONFIG_KASAN_INLINE, accesses to bogus pointers (outside the high * canonical half of the address space) cause out-of-bounds shadow memory reads