From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-20.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2926EC4742C for ; Tue, 10 Nov 2020 22:20:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C95D220674 for ; Tue, 10 Nov 2020 22:20:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="HbmemqL7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732407AbgKJWU4 (ORCPT ); Tue, 10 Nov 2020 17:20:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732374AbgKJWUv (ORCPT ); Tue, 10 Nov 2020 17:20:51 -0500 Received: from mail-qt1-x849.google.com (mail-qt1-x849.google.com [IPv6:2607:f8b0:4864:20::849]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 467D5C0613D1 for ; Tue, 10 Nov 2020 14:20:51 -0800 (PST) Received: by mail-qt1-x849.google.com with SMTP id j5so8487695qtj.11 for ; Tue, 10 Nov 2020 14:20:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=WOMasW4WeK4i4aCbvBDhnou95P0GnHEsdPLivTBemP4=; b=HbmemqL7hGON1dZUtHAIO/Ny5Z5yXZ4JDxyVyJy817JkkYWiD/QtbND8oC8ab7jCnI 5Wbp10QDuzYLJu6lNMQ/cilMKfhcOQKdxLo2b2RlUEr9KAST0GqOKpk56Qy0CPfK5YuM QKo9+lLsoO9x4ILXIt3sKjhcJ8pdIqjOatB0zmydqRDWzWGHfAAw6YSENtb7o5FoF2si lv2RAbcm26eD/cbihEmRP5cwTzv9aHIH9H1rKOeKMG6R8p0oNMZ/gBRAvVBPI42BEMDc psc8VI/Zf64SE7/LFloA+ZdjypcKgOsrKstJM34+FhTA1A+KoSlI7qAqvqmoxKnZxc2h Df1g== X-Google-DKIM-Signature: v=1; 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=WOMasW4WeK4i4aCbvBDhnou95P0GnHEsdPLivTBemP4=; b=p0OTVHLLkmaQUeF7aJW3te4IbE/8RGn3XmjyQ/VudvDANXtLu0ixPoOlyJmaZCcZy6 Q0q5vqPit3UEZ0msGUOvhe9sBx3kagehjWoQEEBV2zuOVNu1jsnBVGsB251Q+bCOK00c gXMgpOQwSyQb/fU8mKY1sStPsv1j2V2lHj9CD8aD1r6evbQJ7q/T04YbhC+45AKaifNT 4L7SQ0LBmrCo6ArUEcN1kQCyCWQq5lG0BABY0TguOezscEbgdB1eb/vMQ8m2ywr2G1EI 35JngAvKDwg0wCwTREgWKX3EwKZHqjORPGUcBD0HMbuXp/HjaSRds4zBcTkmDPFsX21R 4zSQ== X-Gm-Message-State: AOAM5325nEb7t3YR9ADgm+qG8Xrj2lX6pufbZi5qhME7ZM969XHBzOtz z0WxJoQB34+E67xmLoNTQobn0ECWNxze08do X-Google-Smtp-Source: ABdhPJxV3RzH8+DI2bYMl115wXV/xV/YUfiel/zd2PCNwgEqHTxxwM0dmmBMZ8TRZ+cgt1xGGP23OM9y5Oi9AE76 Sender: "andreyknvl via sendgmr" X-Received: from andreyknvl3.muc.corp.google.com ([2a00:79e0:15:13:7220:84ff:fe09:7e9d]) (user=andreyknvl job=sendgmr) by 2002:a0c:9e2f:: with SMTP id p47mr14534879qve.11.1605046850374; Tue, 10 Nov 2020 14:20:50 -0800 (PST) Date: Tue, 10 Nov 2020 23:20:13 +0100 In-Reply-To: Message-Id: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.29.2.222.g5d2a92d10f8-goog Subject: [PATCH v2 09/20] kasan: inline kasan_poison_memory and check_invalid_free From: Andrey Konovalov To: Dmitry Vyukov , Alexander Potapenko , Marco Elver Cc: Catalin Marinas , Will Deacon , Vincenzo Frascino , Evgenii Stepanov , Andrey Ryabinin , Branislav Rankov , Kevin Brodsky , Andrew Morton , kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrey Konovalov Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Using kasan_poison_memory() or check_invalid_free() currently results in function calls. Move their definitions to mm/kasan/kasan.h and turn them into static inline functions for hardware tag-based mode to avoid unneeded function calls. Signed-off-by: Andrey Konovalov Reviewed-by: Dmitry Vyukov Link: https://linux-review.googlesource.com/id/Ia9d8191024a12d1374675b3d27197f10193f50bb --- mm/kasan/hw_tags.c | 15 --------------- mm/kasan/kasan.h | 28 ++++++++++++++++++++++++---- 2 files changed, 24 insertions(+), 19 deletions(-) diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c index 1476ac07666e..0303e49904b4 100644 --- a/mm/kasan/hw_tags.c +++ b/mm/kasan/hw_tags.c @@ -30,27 +30,12 @@ void kasan_init_hw_tags(void) pr_info("KernelAddressSanitizer initialized\n"); } -void kasan_poison_memory(const void *address, size_t size, u8 value) -{ - hw_set_mem_tag_range(kasan_reset_tag(address), - round_up(size, KASAN_GRANULE_SIZE), value); -} - void kasan_unpoison_memory(const void *address, size_t size) { hw_set_mem_tag_range(kasan_reset_tag(address), round_up(size, KASAN_GRANULE_SIZE), get_tag(address)); } -bool check_invalid_free(void *addr) -{ - u8 ptr_tag = get_tag(addr); - u8 mem_tag = hw_get_mem_tag(addr); - - return (mem_tag == KASAN_TAG_INVALID) || - (ptr_tag != KASAN_TAG_KERNEL && ptr_tag != mem_tag); -} - void kasan_set_free_info(struct kmem_cache *cache, void *object, u8 tag) { diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 7498839a15d3..ab7314418604 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -153,8 +153,6 @@ struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache, struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache, const void *object); -void kasan_poison_memory(const void *address, size_t size, u8 value); - #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) static inline const void *kasan_shadow_to_mem(const void *shadow_addr) @@ -194,8 +192,6 @@ void print_tags(u8 addr_tag, const void *addr); static inline void print_tags(u8 addr_tag, const void *addr) { } #endif -bool check_invalid_free(void *addr); - void *find_first_bad_addr(void *addr, size_t size); const char *get_bug_type(struct kasan_access_info *info); void metadata_fetch_row(char *buffer, void *row); @@ -279,6 +275,30 @@ static inline u8 random_tag(void) } #endif +#ifdef CONFIG_KASAN_HW_TAGS + +static inline void kasan_poison_memory(const void *address, size_t size, u8 value) +{ + hw_set_mem_tag_range(kasan_reset_tag(address), + round_up(size, KASAN_GRANULE_SIZE), value); +} + +static inline bool check_invalid_free(void *addr) +{ + u8 ptr_tag = get_tag(addr); + u8 mem_tag = hw_get_mem_tag(addr); + + return (mem_tag == KASAN_TAG_INVALID) || + (ptr_tag != KASAN_TAG_KERNEL && ptr_tag != mem_tag); +} + +#else /* CONFIG_KASAN_HW_TAGS */ + +void kasan_poison_memory(const void *address, size_t size, u8 value); +bool check_invalid_free(void *addr); + +#endif /* CONFIG_KASAN_HW_TAGS */ + /* * Exported functions for interfaces called from assembly or from generated * code. 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charset="UTF-8" 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: Using kasan_poison_memory() or check_invalid_free() currently results in function calls. Move their definitions to mm/kasan/kasan.h and turn them into static inline functions for hardware tag-based mode to avoid unneeded function calls. Signed-off-by: Andrey Konovalov Reviewed-by: Dmitry Vyukov Link: https://linux-review.googlesource.com/id/Ia9d8191024a12d1374675b3d27197f10193f50bb --- mm/kasan/hw_tags.c | 15 --------------- mm/kasan/kasan.h | 28 ++++++++++++++++++++++++---- 2 files changed, 24 insertions(+), 19 deletions(-) diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c index 1476ac07666e..0303e49904b4 100644 --- a/mm/kasan/hw_tags.c +++ b/mm/kasan/hw_tags.c @@ -30,27 +30,12 @@ void kasan_init_hw_tags(void) pr_info("KernelAddressSanitizer initialized\n"); } -void kasan_poison_memory(const void *address, size_t size, u8 value) -{ - hw_set_mem_tag_range(kasan_reset_tag(address), - round_up(size, KASAN_GRANULE_SIZE), value); -} - void kasan_unpoison_memory(const void *address, size_t size) { hw_set_mem_tag_range(kasan_reset_tag(address), round_up(size, KASAN_GRANULE_SIZE), get_tag(address)); } -bool check_invalid_free(void *addr) -{ - u8 ptr_tag = get_tag(addr); - u8 mem_tag = hw_get_mem_tag(addr); - - return (mem_tag == KASAN_TAG_INVALID) || - (ptr_tag != KASAN_TAG_KERNEL && ptr_tag != mem_tag); -} - void kasan_set_free_info(struct kmem_cache *cache, void *object, u8 tag) { diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 7498839a15d3..ab7314418604 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -153,8 +153,6 @@ struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache, struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache, const void *object); -void kasan_poison_memory(const void *address, size_t size, u8 value); - #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) static inline const void *kasan_shadow_to_mem(const void *shadow_addr) @@ -194,8 +192,6 @@ void print_tags(u8 addr_tag, const void *addr); static inline void print_tags(u8 addr_tag, const void *addr) { } #endif -bool check_invalid_free(void *addr); - void *find_first_bad_addr(void *addr, size_t size); const char *get_bug_type(struct kasan_access_info *info); void metadata_fetch_row(char *buffer, void *row); @@ -279,6 +275,30 @@ static inline u8 random_tag(void) } #endif +#ifdef CONFIG_KASAN_HW_TAGS + +static inline void kasan_poison_memory(const void *address, size_t size, u8 value) +{ + hw_set_mem_tag_range(kasan_reset_tag(address), + round_up(size, KASAN_GRANULE_SIZE), value); +} + +static inline bool check_invalid_free(void *addr) +{ + u8 ptr_tag = get_tag(addr); + u8 mem_tag = hw_get_mem_tag(addr); + + return (mem_tag == KASAN_TAG_INVALID) || + (ptr_tag != KASAN_TAG_KERNEL && ptr_tag != mem_tag); +} + +#else /* CONFIG_KASAN_HW_TAGS */ + +void kasan_poison_memory(const void *address, size_t size, u8 value); +bool check_invalid_free(void *addr); + +#endif /* CONFIG_KASAN_HW_TAGS */ + /* * Exported functions for interfaces called from assembly or from generated * code. 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Tue, 10 Nov 2020 14:20:50 -0800 (PST) Date: Tue, 10 Nov 2020 23:20:13 +0100 In-Reply-To: Message-Id: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.29.2.222.g5d2a92d10f8-goog Subject: [PATCH v2 09/20] kasan: inline kasan_poison_memory and check_invalid_free From: Andrey Konovalov To: Dmitry Vyukov , Alexander Potapenko , Marco Elver X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201110_172056_831137_BCCB31A3 X-CRM114-Status: GOOD ( 14.18 ) 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: Branislav Rankov , Catalin Marinas , Kevin Brodsky , Will Deacon , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, Andrey Konovalov , Andrey Ryabinin , Andrew Morton , Vincenzo Frascino , Evgenii Stepanov Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Using kasan_poison_memory() or check_invalid_free() currently results in function calls. Move their definitions to mm/kasan/kasan.h and turn them into static inline functions for hardware tag-based mode to avoid unneeded function calls. Signed-off-by: Andrey Konovalov Reviewed-by: Dmitry Vyukov Link: https://linux-review.googlesource.com/id/Ia9d8191024a12d1374675b3d27197f10193f50bb --- mm/kasan/hw_tags.c | 15 --------------- mm/kasan/kasan.h | 28 ++++++++++++++++++++++++---- 2 files changed, 24 insertions(+), 19 deletions(-) diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c index 1476ac07666e..0303e49904b4 100644 --- a/mm/kasan/hw_tags.c +++ b/mm/kasan/hw_tags.c @@ -30,27 +30,12 @@ void kasan_init_hw_tags(void) pr_info("KernelAddressSanitizer initialized\n"); } -void kasan_poison_memory(const void *address, size_t size, u8 value) -{ - hw_set_mem_tag_range(kasan_reset_tag(address), - round_up(size, KASAN_GRANULE_SIZE), value); -} - void kasan_unpoison_memory(const void *address, size_t size) { hw_set_mem_tag_range(kasan_reset_tag(address), round_up(size, KASAN_GRANULE_SIZE), get_tag(address)); } -bool check_invalid_free(void *addr) -{ - u8 ptr_tag = get_tag(addr); - u8 mem_tag = hw_get_mem_tag(addr); - - return (mem_tag == KASAN_TAG_INVALID) || - (ptr_tag != KASAN_TAG_KERNEL && ptr_tag != mem_tag); -} - void kasan_set_free_info(struct kmem_cache *cache, void *object, u8 tag) { diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 7498839a15d3..ab7314418604 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -153,8 +153,6 @@ struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache, struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache, const void *object); -void kasan_poison_memory(const void *address, size_t size, u8 value); - #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) static inline const void *kasan_shadow_to_mem(const void *shadow_addr) @@ -194,8 +192,6 @@ void print_tags(u8 addr_tag, const void *addr); static inline void print_tags(u8 addr_tag, const void *addr) { } #endif -bool check_invalid_free(void *addr); - void *find_first_bad_addr(void *addr, size_t size); const char *get_bug_type(struct kasan_access_info *info); void metadata_fetch_row(char *buffer, void *row); @@ -279,6 +275,30 @@ static inline u8 random_tag(void) } #endif +#ifdef CONFIG_KASAN_HW_TAGS + +static inline void kasan_poison_memory(const void *address, size_t size, u8 value) +{ + hw_set_mem_tag_range(kasan_reset_tag(address), + round_up(size, KASAN_GRANULE_SIZE), value); +} + +static inline bool check_invalid_free(void *addr) +{ + u8 ptr_tag = get_tag(addr); + u8 mem_tag = hw_get_mem_tag(addr); + + return (mem_tag == KASAN_TAG_INVALID) || + (ptr_tag != KASAN_TAG_KERNEL && ptr_tag != mem_tag); +} + +#else /* CONFIG_KASAN_HW_TAGS */ + +void kasan_poison_memory(const void *address, size_t size, u8 value); +bool check_invalid_free(void *addr); + +#endif /* CONFIG_KASAN_HW_TAGS */ + /* * Exported functions for interfaces called from assembly or from generated * code. Declarations here to avoid warning about missing declarations. -- 2.29.2.222.g5d2a92d10f8-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel