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=-20.6 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, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham 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 8C927C433E3 for ; Fri, 14 Aug 2020 17:27:41 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2158520708 for ; Fri, 14 Aug 2020 17:27:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="PkaDjnEO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2158520708 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A821A6B000A; Fri, 14 Aug 2020 13:27:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A32056B000C; Fri, 14 Aug 2020 13:27:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 948016B000D; Fri, 14 Aug 2020 13:27:40 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0181.hostedemail.com [216.40.44.181]) by kanga.kvack.org (Postfix) with ESMTP id 7C7CE6B000A for ; Fri, 14 Aug 2020 13:27:40 -0400 (EDT) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id C991240C7 for ; Fri, 14 Aug 2020 17:27:39 +0000 (UTC) X-FDA: 77149856238.14.board58_440965226ffe Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin14.hostedemail.com (Postfix) with ESMTP id BBF3B18229835 for ; Fri, 14 Aug 2020 17:27:38 +0000 (UTC) X-HE-Tag: board58_440965226ffe X-Filterd-Recvd-Size: 18167 Received: from mail-wm1-f73.google.com (mail-wm1-f73.google.com [209.85.128.73]) by imf05.hostedemail.com (Postfix) with ESMTP for ; Fri, 14 Aug 2020 17:27:37 +0000 (UTC) Received: by mail-wm1-f73.google.com with SMTP id p184so3409367wmp.7 for ; Fri, 14 Aug 2020 10:27:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=bRu728EFW5d2BLJ1Gu8QpaNzOgGu693ugUiPSDZNjhM=; b=PkaDjnEOPpRWKufCUmnFO2q66c87Masi0+K22SDyxxwAfpialLsAre9V09oWnXki/b PWhDmWvCh85Ts7Vp52xGZpFPeHlUuGIzCUYRHWEXLl3wb9R/0C79e1TW5fHUhpRxo7w8 nidrzNP7/eVTq16de8gPpSJOxHmRDqiL7yvdQQVG0v0vnj1uH0Znkphx/tCftCFSsAxC Hz4RhOn8zyYbEShZmYvL0GvCgHomf9Ijh6Xu0ZsX6fvhLzE2rtshgrvXJ25J/rJEvo7i xwAvB3JiJNcdunu7ogFn7gICWyQsyAE2nT5bV4eNphLDrLGVOHa7i2xXywvC615Avou+ iFUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=bRu728EFW5d2BLJ1Gu8QpaNzOgGu693ugUiPSDZNjhM=; b=NPw+NVkD15ymZjYBz60P+qgqnLwQWTrRmg/cc8dv0FIMth1q0kvWllK2OHb3//TLtx clKQmNPjpJF/0bzPGjRc8AoJCBPd/lppUPUu9LvWgxaLy3vQK6aY05uSQLJvI2CjLeBM SgmWJO0wHt1sxozV7bl/6zaowbczgRuoZgIciJpdziei8MaOViefDE2Z9A4z/BAH4X+3 899qgjPaVWZqZ3Xf5is3FpvIXnEqbaLMPAV6zjVGnOq8dUG9r7QklsXT2MVj8KrESh2E Hv/P2/dG8rvY4hj7bP1NTeeyxiLEFncEe5Suo78Ov/tAuFy8HM4yuU9hXKrUYpLEnqxm h/wQ== X-Gm-Message-State: AOAM533w+sOQfPrSOE7FFaDWL2bRp18XpYJstCnvTWyfNnSPS0PR5OAB MvMOcP8Sxgz7Usi9xUm/BO+QkiNx3ScEKh+r X-Google-Smtp-Source: ABdhPJy7L+gpVNWKm27ZJLTH+IMMVj6ypNpwAKn07tKndsgrUEkzYX2Lz4Sarxz5UF3eSvMhykPRTH/ayarmnvTu X-Received: by 2002:a05:600c:c3:: with SMTP id u3mr423894wmm.1.1597426055942; Fri, 14 Aug 2020 10:27:35 -0700 (PDT) Date: Fri, 14 Aug 2020 19:26:47 +0200 In-Reply-To: Message-Id: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.220.ged08abb693-goog Subject: [PATCH 05/35] kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* 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: BBF3B18229835 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 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: This is a preparatory commit for the upcoming addition of a new hardware tag-based (MTE-based) KASAN mode. The new mode won't be using shadow memory, but will still use the concept of memory granules. Rename KASAN_SHADOW_SCALE_SIZE to KASAN_GRANULE_SIZE, and KASAN_SHADOW_MASK to KASAN_GRANULE_MASK. Also use MASK when used as a mask, otherwise use SIZE. No functional changes. Signed-off-by: Andrey Konovalov --- Documentation/dev-tools/kasan.rst | 2 +- lib/test_kasan.c | 2 +- mm/kasan/common.c | 39 ++++++++++++++++--------------- mm/kasan/generic.c | 14 +++++------ mm/kasan/generic_report.c | 8 +++---- mm/kasan/init.c | 8 +++---- mm/kasan/kasan.h | 4 ++-- mm/kasan/report.c | 10 ++++---- mm/kasan/tags_report.c | 2 +- 9 files changed, 45 insertions(+), 44 deletions(-) diff --git a/Documentation/dev-tools/kasan.rst b/Documentation/dev-tools/kasan.rst index 38fd5681fade..a3030fc6afe5 100644 --- a/Documentation/dev-tools/kasan.rst +++ b/Documentation/dev-tools/kasan.rst @@ -264,7 +264,7 @@ Most mappings in vmalloc space are small, requiring less than a full page of shadow space. Allocating a full shadow page per mapping would therefore be wasteful. Furthermore, to ensure that different mappings use different shadow pages, mappings would have to be aligned to -``KASAN_SHADOW_SCALE_SIZE * PAGE_SIZE``. +``KASAN_GRANULE_SIZE * PAGE_SIZE``. Instead, we share backing space across multiple mappings. We allocate a backing page when a mapping in vmalloc space uses a particular page diff --git a/lib/test_kasan.c b/lib/test_kasan.c index 5d3f496893ef..247a14f40016 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -25,7 +25,7 @@ #include "../mm/kasan/kasan.h" -#define OOB_TAG_OFF (IS_ENABLED(CONFIG_KASAN_GENERIC) ? 0 : KASAN_SHADOW_SCALE_SIZE) +#define OOB_TAG_OFF (IS_ENABLED(CONFIG_KASAN_GENERIC) ? 0 : KASAN_GRANULE_SIZE) /* * We assign some test results to these globals to make sure the tests diff --git a/mm/kasan/common.c b/mm/kasan/common.c index 65933b27df81..c9daf2c33651 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -111,7 +111,7 @@ void *memcpy(void *dest, const void *src, size_t len) /* * Poisons the shadow memory for 'size' bytes starting from 'addr'. - * Memory addresses should be aligned to KASAN_SHADOW_SCALE_SIZE. + * Memory addresses should be aligned to KASAN_GRANULE_SIZE. */ void kasan_poison_memory(const void *address, size_t size, u8 value) { @@ -143,13 +143,13 @@ void kasan_unpoison_memory(const void *address, size_t size) kasan_poison_memory(address, size, tag); - if (size & KASAN_SHADOW_MASK) { + if (size & KASAN_GRANULE_MASK) { u8 *shadow = (u8 *)kasan_mem_to_shadow(address + size); if (IS_ENABLED(CONFIG_KASAN_SW_TAGS)) *shadow = tag; else - *shadow = size & KASAN_SHADOW_MASK; + *shadow = size & KASAN_GRANULE_MASK; } } @@ -301,7 +301,7 @@ void kasan_unpoison_object_data(struct kmem_cache *cache, void *object) void kasan_poison_object_data(struct kmem_cache *cache, void *object) { kasan_poison_memory(object, - round_up(cache->object_size, KASAN_SHADOW_SCALE_SIZE), + round_up(cache->object_size, KASAN_GRANULE_SIZE), KASAN_KMALLOC_REDZONE); } @@ -373,7 +373,7 @@ static inline bool shadow_invalid(u8 tag, s8 shadow_byte) { if (IS_ENABLED(CONFIG_KASAN_GENERIC)) return shadow_byte < 0 || - shadow_byte >= KASAN_SHADOW_SCALE_SIZE; + shadow_byte >= KASAN_GRANULE_SIZE; /* else CONFIG_KASAN_SW_TAGS: */ if ((u8)shadow_byte == KASAN_TAG_INVALID) @@ -412,7 +412,7 @@ static bool __kasan_slab_free(struct kmem_cache *cache, void *object, return true; } - rounded_up_size = round_up(cache->object_size, KASAN_SHADOW_SCALE_SIZE); + rounded_up_size = round_up(cache->object_size, KASAN_GRANULE_SIZE); kasan_poison_memory(object, rounded_up_size, KASAN_KMALLOC_FREE); if ((IS_ENABLED(CONFIG_KASAN_GENERIC) && !quarantine) || @@ -445,9 +445,9 @@ static void *__kasan_kmalloc(struct kmem_cache *cache, const void *object, return NULL; redzone_start = round_up((unsigned long)(object + size), - KASAN_SHADOW_SCALE_SIZE); + KASAN_GRANULE_SIZE); redzone_end = round_up((unsigned long)object + cache->object_size, - KASAN_SHADOW_SCALE_SIZE); + KASAN_GRANULE_SIZE); if (IS_ENABLED(CONFIG_KASAN_SW_TAGS)) tag = assign_tag(cache, object, false, keep_tag); @@ -491,7 +491,7 @@ void * __must_check kasan_kmalloc_large(const void *ptr, size_t size, page = virt_to_page(ptr); redzone_start = round_up((unsigned long)(ptr + size), - KASAN_SHADOW_SCALE_SIZE); + KASAN_GRANULE_SIZE); redzone_end = (unsigned long)ptr + page_size(page); kasan_unpoison_memory(ptr, size); @@ -589,8 +589,8 @@ static int __meminit kasan_mem_notifier(struct notifier_block *nb, shadow_size = nr_shadow_pages << PAGE_SHIFT; shadow_end = shadow_start + shadow_size; - if (WARN_ON(mem_data->nr_pages % KASAN_SHADOW_SCALE_SIZE) || - WARN_ON(start_kaddr % (KASAN_SHADOW_SCALE_SIZE << PAGE_SHIFT))) + if (WARN_ON(mem_data->nr_pages % KASAN_GRANULE_SIZE) || + WARN_ON(start_kaddr % (KASAN_GRANULE_SIZE << PAGE_SHIFT))) return NOTIFY_BAD; switch (action) { @@ -748,7 +748,7 @@ void kasan_poison_vmalloc(const void *start, unsigned long size) if (!is_vmalloc_or_module_addr(start)) return; - size = round_up(size, KASAN_SHADOW_SCALE_SIZE); + size = round_up(size, KASAN_GRANULE_SIZE); kasan_poison_memory(start, size, KASAN_VMALLOC_INVALID); } @@ -861,22 +861,22 @@ void kasan_release_vmalloc(unsigned long start, unsigned long end, unsigned long region_start, region_end; unsigned long size; - region_start = ALIGN(start, PAGE_SIZE * KASAN_SHADOW_SCALE_SIZE); - region_end = ALIGN_DOWN(end, PAGE_SIZE * KASAN_SHADOW_SCALE_SIZE); + region_start = ALIGN(start, PAGE_SIZE * KASAN_GRANULE_SIZE); + region_end = ALIGN_DOWN(end, PAGE_SIZE * KASAN_GRANULE_SIZE); free_region_start = ALIGN(free_region_start, - PAGE_SIZE * KASAN_SHADOW_SCALE_SIZE); + PAGE_SIZE * KASAN_GRANULE_SIZE); if (start != region_start && free_region_start < region_start) - region_start -= PAGE_SIZE * KASAN_SHADOW_SCALE_SIZE; + region_start -= PAGE_SIZE * KASAN_GRANULE_SIZE; free_region_end = ALIGN_DOWN(free_region_end, - PAGE_SIZE * KASAN_SHADOW_SCALE_SIZE); + PAGE_SIZE * KASAN_GRANULE_SIZE); if (end != region_end && free_region_end > region_end) - region_end += PAGE_SIZE * KASAN_SHADOW_SCALE_SIZE; + region_end += PAGE_SIZE * KASAN_GRANULE_SIZE; shadow_start = kasan_mem_to_shadow((void *)region_start); shadow_end = kasan_mem_to_shadow((void *)region_end); @@ -902,7 +902,8 @@ int kasan_module_alloc(void *addr, size_t size) unsigned long shadow_start; shadow_start = (unsigned long)kasan_mem_to_shadow(addr); - scaled_size = (size + KASAN_SHADOW_MASK) >> KASAN_SHADOW_SCALE_SHIFT; + scaled_size = (size + KASAN_GRANULE_SIZE - 1) >> + KASAN_SHADOW_SCALE_SHIFT; shadow_size = round_up(scaled_size, PAGE_SIZE); if (WARN_ON(!PAGE_ALIGNED(shadow_start))) diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c index 4b5f905198d8..f6d68aa9872f 100644 --- a/mm/kasan/generic.c +++ b/mm/kasan/generic.c @@ -51,7 +51,7 @@ static __always_inline bool memory_is_poisoned_1(unsigned long addr) s8 shadow_value = *(s8 *)kasan_mem_to_shadow((void *)addr); if (unlikely(shadow_value)) { - s8 last_accessible_byte = addr & KASAN_SHADOW_MASK; + s8 last_accessible_byte = addr & KASAN_GRANULE_MASK; return unlikely(last_accessible_byte >= shadow_value); } @@ -67,7 +67,7 @@ static __always_inline bool memory_is_poisoned_2_4_8(unsigned long addr, * Access crosses 8(shadow size)-byte boundary. Such access maps * into 2 shadow bytes, so we need to check them both. */ - if (unlikely(((addr + size - 1) & KASAN_SHADOW_MASK) < size - 1)) + if (unlikely(((addr + size - 1) & KASAN_GRANULE_MASK) < size - 1)) return *shadow_addr || memory_is_poisoned_1(addr + size - 1); return memory_is_poisoned_1(addr + size - 1); @@ -78,7 +78,7 @@ static __always_inline bool memory_is_poisoned_16(unsigned long addr) u16 *shadow_addr = (u16 *)kasan_mem_to_shadow((void *)addr); /* Unaligned 16-bytes access maps into 3 shadow bytes. */ - if (unlikely(!IS_ALIGNED(addr, KASAN_SHADOW_SCALE_SIZE))) + if (unlikely(!IS_ALIGNED(addr, KASAN_GRANULE_SIZE))) return *shadow_addr || memory_is_poisoned_1(addr + 15); return *shadow_addr; @@ -139,7 +139,7 @@ static __always_inline bool memory_is_poisoned_n(unsigned long addr, s8 *last_shadow = (s8 *)kasan_mem_to_shadow((void *)last_byte); if (unlikely(ret != (unsigned long)last_shadow || - ((long)(last_byte & KASAN_SHADOW_MASK) >= *last_shadow))) + ((long)(last_byte & KASAN_GRANULE_MASK) >= *last_shadow))) return true; } return false; @@ -205,7 +205,7 @@ void kasan_cache_shutdown(struct kmem_cache *cache) static void register_global(struct kasan_global *global) { - size_t aligned_size = round_up(global->size, KASAN_SHADOW_SCALE_SIZE); + size_t aligned_size = round_up(global->size, KASAN_GRANULE_SIZE); kasan_unpoison_memory(global->beg, global->size); @@ -279,10 +279,10 @@ EXPORT_SYMBOL(__asan_handle_no_return); /* Emitted by compiler to poison alloca()ed objects. */ void __asan_alloca_poison(unsigned long addr, size_t size) { - size_t rounded_up_size = round_up(size, KASAN_SHADOW_SCALE_SIZE); + size_t rounded_up_size = round_up(size, KASAN_GRANULE_SIZE); size_t padding_size = round_up(size, KASAN_ALLOCA_REDZONE_SIZE) - rounded_up_size; - size_t rounded_down_size = round_down(size, KASAN_SHADOW_SCALE_SIZE); + size_t rounded_down_size = round_down(size, KASAN_GRANULE_SIZE); const void *left_redzone = (const void *)(addr - KASAN_ALLOCA_REDZONE_SIZE); diff --git a/mm/kasan/generic_report.c b/mm/kasan/generic_report.c index a38c7a9e192a..4dce1633b082 100644 --- a/mm/kasan/generic_report.c +++ b/mm/kasan/generic_report.c @@ -39,7 +39,7 @@ void *find_first_bad_addr(void *addr, size_t size) void *p = addr; while (p < addr + size && !(*(u8 *)kasan_mem_to_shadow(p))) - p += KASAN_SHADOW_SCALE_SIZE; + p += KASAN_GRANULE_SIZE; return p; } @@ -51,14 +51,14 @@ static const char *get_shadow_bug_type(struct kasan_access_info *info) shadow_addr = (u8 *)kasan_mem_to_shadow(info->first_bad_addr); /* - * If shadow byte value is in [0, KASAN_SHADOW_SCALE_SIZE) we can look + * If shadow byte value is in [0, KASAN_GRANULE_SIZE) we can look * at the next shadow byte to determine the type of the bad access. */ - if (*shadow_addr > 0 && *shadow_addr <= KASAN_SHADOW_SCALE_SIZE - 1) + if (*shadow_addr > 0 && *shadow_addr <= KASAN_GRANULE_SIZE - 1) shadow_addr++; switch (*shadow_addr) { - case 0 ... KASAN_SHADOW_SCALE_SIZE - 1: + case 0 ... KASAN_GRANULE_SIZE - 1: /* * In theory it's still possible to see these shadow values * due to a data race in the kernel code. diff --git a/mm/kasan/init.c b/mm/kasan/init.c index fe6be0be1f76..754b641c83c7 100644 --- a/mm/kasan/init.c +++ b/mm/kasan/init.c @@ -447,8 +447,8 @@ void kasan_remove_zero_shadow(void *start, unsigned long size) end = addr + (size >> KASAN_SHADOW_SCALE_SHIFT); if (WARN_ON((unsigned long)start % - (KASAN_SHADOW_SCALE_SIZE * PAGE_SIZE)) || - WARN_ON(size % (KASAN_SHADOW_SCALE_SIZE * PAGE_SIZE))) + (KASAN_GRANULE_SIZE * PAGE_SIZE)) || + WARN_ON(size % (KASAN_GRANULE_SIZE * PAGE_SIZE))) return; for (; addr < end; addr = next) { @@ -482,8 +482,8 @@ int kasan_add_zero_shadow(void *start, unsigned long size) shadow_end = shadow_start + (size >> KASAN_SHADOW_SCALE_SHIFT); if (WARN_ON((unsigned long)start % - (KASAN_SHADOW_SCALE_SIZE * PAGE_SIZE)) || - WARN_ON(size % (KASAN_SHADOW_SCALE_SIZE * PAGE_SIZE))) + (KASAN_GRANULE_SIZE * PAGE_SIZE)) || + WARN_ON(size % (KASAN_GRANULE_SIZE * PAGE_SIZE))) return -EINVAL; ret = kasan_populate_early_shadow(shadow_start, shadow_end); diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 03450d3b31f7..c31e2c739301 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -5,8 +5,8 @@ #include #include -#define KASAN_SHADOW_SCALE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) -#define KASAN_SHADOW_MASK (KASAN_SHADOW_SCALE_SIZE - 1) +#define KASAN_GRANULE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) +#define KASAN_GRANULE_MASK (KASAN_GRANULE_SIZE - 1) #define KASAN_TAG_KERNEL 0xFF /* native kernel pointers tag */ #define KASAN_TAG_INVALID 0xFE /* inaccessible memory tag */ diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 4f49fa6cd1aa..7c025d792e2f 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -317,24 +317,24 @@ static bool __must_check get_address_stack_frame_info(const void *addr, return false; aligned_addr = round_down((unsigned long)addr, sizeof(long)); - mem_ptr = round_down(aligned_addr, KASAN_SHADOW_SCALE_SIZE); + mem_ptr = round_down(aligned_addr, KASAN_GRANULE_SIZE); shadow_ptr = kasan_mem_to_shadow((void *)aligned_addr); shadow_bottom = kasan_mem_to_shadow(end_of_stack(current)); while (shadow_ptr >= shadow_bottom && *shadow_ptr != KASAN_STACK_LEFT) { shadow_ptr--; - mem_ptr -= KASAN_SHADOW_SCALE_SIZE; + mem_ptr -= KASAN_GRANULE_SIZE; } while (shadow_ptr >= shadow_bottom && *shadow_ptr == KASAN_STACK_LEFT) { shadow_ptr--; - mem_ptr -= KASAN_SHADOW_SCALE_SIZE; + mem_ptr -= KASAN_GRANULE_SIZE; } if (shadow_ptr < shadow_bottom) return false; - frame = (const unsigned long *)(mem_ptr + KASAN_SHADOW_SCALE_SIZE); + frame = (const unsigned long *)(mem_ptr + KASAN_GRANULE_SIZE); if (frame[0] != KASAN_CURRENT_STACK_FRAME_MAGIC) { pr_err("KASAN internal error: frame info validation failed; invalid marker: %lu\n", frame[0]); @@ -572,6 +572,6 @@ void kasan_non_canonical_hook(unsigned long addr) else bug_type = "maybe wild-memory-access"; pr_alert("KASAN: %s in range [0x%016lx-0x%016lx]\n", bug_type, - orig_addr, orig_addr + KASAN_SHADOW_MASK); + orig_addr, orig_addr + KASAN_GRANULE_SIZE - 1); } #endif diff --git a/mm/kasan/tags_report.c b/mm/kasan/tags_report.c index bee43717d6f0..6ddb55676a7c 100644 --- a/mm/kasan/tags_report.c +++ b/mm/kasan/tags_report.c @@ -81,7 +81,7 @@ void *find_first_bad_addr(void *addr, size_t size) void *end = p + size; while (p < end && tag == *(u8 *)kasan_mem_to_shadow(p)) - p += KASAN_SHADOW_SCALE_SIZE; + p += KASAN_GRANULE_SIZE; return p; } -- 2.28.0.220.ged08abb693-goog