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s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=l6ZIwvY6syyAP67b2MO5JHAbeJPBE9lyCC+sGAziw0Y=; b=pFLDRqQPoBoHJTPJzxOSrgwm4c0nCHjN/pP7Hg731RpTtmfUbZtsOh9Yr6XiupU16r YXA4V8MLIF2+6CGo/MwtlTaGXB3LRGUuKAkiMKt9OiFSTYZcEh428Zbzee2ZSfqC3iXg ZO5UIui9MwUB5w8pPYLb1stqxeBHHjp9W2YFSabxxJ4wbQynvYtQTZ8zIvkPkf5LVTLA 45SioQ8nOcEk06HqNW9HDqviLkentKKe1J90rwQFHg2SaW9s19BcFSeUkytm7gc9idSF Y88gLT9+1ef2ioXf3dOW1UEQCdrc4xkdyiBKRKNKkt0FFiyQRfB0M1TzxLsGD00lmawX iRew== X-Gm-Message-State: AOAM533cJaWz2a0C+GSFRplhn2gt8YeMUHkgy/vLSUWffTB/s/p6+zXM Nsi5P1aPTzvg/3UB6cEG8SUR9AhqgXblLvyf X-Google-Smtp-Source: ABdhPJy3uOE8d50CkEhPANU8s2DSDIvcOJG7lmvrwT9uA8T2s4Kv8enADBz7gFdwS2uXrMPjd1s0rvPxNPa2NPmj X-Received: by 2002:a05:6214:1841:: with SMTP id d1mr3456365qvy.135.1597426081697; Fri, 14 Aug 2020 10:28:01 -0700 (PDT) Date: Fri, 14 Aug 2020 19:26:58 +0200 In-Reply-To: Message-Id: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.220.ged08abb693-goog Subject: [PATCH 16/35] kasan: kasan_non_canonical_hook only for software modes From: Andrey Konovalov To: Dmitry Vyukov , Vincenzo Frascino , Catalin Marinas , kasan-dev@googlegroups.com Cc: Andrey Ryabinin , Alexander Potapenko , Marco Elver , Evgenii Stepanov , Elena Petrova , Branislav Rankov , Kevin Brodsky , Will Deacon , Andrew Morton , linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrey Konovalov Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: CED3A18038E60 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000117, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 --- 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 8ad1ced1607d..2cce7c9beea3 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -376,7 +376,8 @@ 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 -- 2.28.0.220.ged08abb693-goog