From 6476792f1015a356e6864076c210b328b64d08cc Mon Sep 17 00:00:00 2001 From: Andrey Konovalov Date: Tue, 22 Dec 2020 12:02:34 -0800 Subject: [PATCH] kasan: rename get_alloc/free_info Rename get_alloc_info() and get_free_info() to kasan_get_alloc_meta() and kasan_get_free_meta() to better reflect what those do and avoid confusion with kasan_set_free_info(). No functional changes. Link: https://lkml.kernel.org/r/27b7c036b754af15a2839e945f6d8bfce32b4c2f.1606162397.git.andreyknvl@google.com Link: https://linux-review.googlesource.com/id/Ib6e4ba61c8b12112b403d3479a9799ac8fff8de1 Signed-off-by: Andrey Konovalov Reviewed-by: Dmitry Vyukov Reviewed-by: Marco Elver Tested-by: Vincenzo Frascino Cc: Alexander Potapenko Cc: Andrey Ryabinin Cc: Branislav Rankov Cc: Catalin Marinas Cc: Evgenii Stepanov Cc: Kevin Brodsky Cc: Vasily Gorbik Cc: Will Deacon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/kasan/common.c | 16 ++++++++-------- mm/kasan/generic.c | 12 ++++++------ mm/kasan/hw_tags.c | 4 ++-- mm/kasan/kasan.h | 8 ++++---- mm/kasan/quarantine.c | 4 ++-- mm/kasan/report.c | 12 ++++++------ mm/kasan/report_sw_tags.c | 2 +- mm/kasan/sw_tags.c | 4 ++-- 8 files changed, 31 insertions(+), 31 deletions(-) diff --git a/mm/kasan/common.c b/mm/kasan/common.c index 34a9d4a8a5ff..11bc85c09e3a 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -180,14 +180,14 @@ size_t kasan_metadata_size(struct kmem_cache *cache) sizeof(struct kasan_free_meta) : 0); } -struct kasan_alloc_meta *get_alloc_info(struct kmem_cache *cache, - const void *object) +struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache, + const void *object) { return (void *)reset_tag(object) + cache->kasan_info.alloc_meta_offset; } -struct kasan_free_meta *get_free_info(struct kmem_cache *cache, - const void *object) +struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache, + const void *object) { BUILD_BUG_ON(sizeof(struct kasan_free_meta) > 32); return (void *)reset_tag(object) + cache->kasan_info.free_meta_offset; @@ -264,13 +264,13 @@ static u8 assign_tag(struct kmem_cache *cache, const void *object, void * __must_check kasan_init_slab_obj(struct kmem_cache *cache, const void *object) { - struct kasan_alloc_meta *alloc_info; + struct kasan_alloc_meta *alloc_meta; if (!(cache->flags & SLAB_KASAN)) return (void *)object; - alloc_info = get_alloc_info(cache, object); - __memset(alloc_info, 0, sizeof(*alloc_info)); + alloc_meta = kasan_get_alloc_meta(cache, object); + __memset(alloc_meta, 0, sizeof(*alloc_meta)); if (IS_ENABLED(CONFIG_KASAN_SW_TAGS) || IS_ENABLED(CONFIG_KASAN_HW_TAGS)) object = set_tag(object, assign_tag(cache, object, true, false)); @@ -350,7 +350,7 @@ static void *__kasan_kmalloc(struct kmem_cache *cache, const void *object, KASAN_KMALLOC_REDZONE); if (cache->flags & SLAB_KASAN) - kasan_set_track(&get_alloc_info(cache, object)->alloc_track, flags); + kasan_set_track(&kasan_get_alloc_meta(cache, object)->alloc_track, flags); return set_tag(object, tag); } diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c index 707ea0a4c4c6..4c233b339301 100644 --- a/mm/kasan/generic.c +++ b/mm/kasan/generic.c @@ -328,7 +328,7 @@ void kasan_record_aux_stack(void *addr) { struct page *page = kasan_addr_to_page(addr); struct kmem_cache *cache; - struct kasan_alloc_meta *alloc_info; + struct kasan_alloc_meta *alloc_meta; void *object; if (!(page && PageSlab(page))) @@ -336,10 +336,10 @@ void kasan_record_aux_stack(void *addr) cache = page->slab_cache; object = nearest_obj(cache, page, addr); - alloc_info = get_alloc_info(cache, object); + alloc_meta = kasan_get_alloc_meta(cache, object); - alloc_info->aux_stack[1] = alloc_info->aux_stack[0]; - alloc_info->aux_stack[0] = kasan_save_stack(GFP_NOWAIT); + alloc_meta->aux_stack[1] = alloc_meta->aux_stack[0]; + alloc_meta->aux_stack[0] = kasan_save_stack(GFP_NOWAIT); } void kasan_set_free_info(struct kmem_cache *cache, @@ -347,7 +347,7 @@ void kasan_set_free_info(struct kmem_cache *cache, { struct kasan_free_meta *free_meta; - free_meta = get_free_info(cache, object); + free_meta = kasan_get_free_meta(cache, object); kasan_set_track(&free_meta->free_track, GFP_NOWAIT); /* @@ -361,5 +361,5 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, { if (*(u8 *)kasan_mem_to_shadow(object) != KASAN_KMALLOC_FREETRACK) return NULL; - return &get_free_info(cache, object)->free_track; + return &kasan_get_free_meta(cache, object)->free_track; } diff --git a/mm/kasan/hw_tags.c b/mm/kasan/hw_tags.c index 66419e908e21..cb849c8da978 100644 --- a/mm/kasan/hw_tags.c +++ b/mm/kasan/hw_tags.c @@ -66,7 +66,7 @@ void kasan_set_free_info(struct kmem_cache *cache, { struct kasan_alloc_meta *alloc_meta; - alloc_meta = get_alloc_info(cache, object); + alloc_meta = kasan_get_alloc_meta(cache, object); kasan_set_track(&alloc_meta->free_track[0], GFP_NOWAIT); } @@ -75,6 +75,6 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, { struct kasan_alloc_meta *alloc_meta; - alloc_meta = get_alloc_info(cache, object); + alloc_meta = kasan_get_alloc_meta(cache, object); return &alloc_meta->free_track[0]; } diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 13c511e85d5f..0eab7e4cecb8 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -149,10 +149,10 @@ struct kasan_free_meta { #endif }; -struct kasan_alloc_meta *get_alloc_info(struct kmem_cache *cache, - const void *object); -struct kasan_free_meta *get_free_info(struct kmem_cache *cache, - const void *object); +struct kasan_alloc_meta *kasan_get_alloc_meta(struct kmem_cache *cache, + const void *object); +struct kasan_free_meta *kasan_get_free_meta(struct kmem_cache *cache, + const void *object); void poison_range(const void *address, size_t size, u8 value); void unpoison_range(const void *address, size_t size); diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c index 88fab9ff2d6e..8fb71e11df3f 100644 --- a/mm/kasan/quarantine.c +++ b/mm/kasan/quarantine.c @@ -168,7 +168,7 @@ void quarantine_put(struct kmem_cache *cache, void *object) unsigned long flags; struct qlist_head *q; struct qlist_head temp = QLIST_INIT; - struct kasan_free_meta *info = get_free_info(cache, object); + struct kasan_free_meta *meta = kasan_get_free_meta(cache, object); /* * Note: irq must be disabled until after we move the batch to the @@ -185,7 +185,7 @@ void quarantine_put(struct kmem_cache *cache, void *object) local_irq_restore(flags); return; } - qlist_put(q, &info->quarantine_link, cache->size); + qlist_put(q, &meta->quarantine_link, cache->size); if (unlikely(q->bytes > QUARANTINE_PERCPU_SIZE)) { qlist_move_all(q, &temp); diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 929fcb2a0204..85ce2cb2cd2b 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -164,12 +164,12 @@ static void describe_object_addr(struct kmem_cache *cache, void *object, static void describe_object(struct kmem_cache *cache, void *object, const void *addr, u8 tag) { - struct kasan_alloc_meta *alloc_info = get_alloc_info(cache, object); + struct kasan_alloc_meta *alloc_meta = kasan_get_alloc_meta(cache, object); if (cache->flags & SLAB_KASAN) { struct kasan_track *free_track; - print_track(&alloc_info->alloc_track, "Allocated"); + print_track(&alloc_meta->alloc_track, "Allocated"); pr_err("\n"); free_track = kasan_get_free_track(cache, object, tag); if (free_track) { @@ -178,14 +178,14 @@ static void describe_object(struct kmem_cache *cache, void *object, } #ifdef CONFIG_KASAN_GENERIC - if (alloc_info->aux_stack[0]) { + if (alloc_meta->aux_stack[0]) { pr_err("Last potentially related work creation:\n"); - print_stack(alloc_info->aux_stack[0]); + print_stack(alloc_meta->aux_stack[0]); pr_err("\n"); } - if (alloc_info->aux_stack[1]) { + if (alloc_meta->aux_stack[1]) { pr_err("Second to last potentially related work creation:\n"); - print_stack(alloc_info->aux_stack[1]); + print_stack(alloc_meta->aux_stack[1]); pr_err("\n"); } #endif diff --git a/mm/kasan/report_sw_tags.c b/mm/kasan/report_sw_tags.c index aebc44a29e83..317100fd95b9 100644 --- a/mm/kasan/report_sw_tags.c +++ b/mm/kasan/report_sw_tags.c @@ -46,7 +46,7 @@ const char *get_bug_type(struct kasan_access_info *info) if (page && PageSlab(page)) { cache = page->slab_cache; object = nearest_obj(cache, page, (void *)addr); - alloc_meta = get_alloc_info(cache, object); + alloc_meta = kasan_get_alloc_meta(cache, object); for (i = 0; i < KASAN_NR_FREE_STACKS; i++) if (alloc_meta->free_pointer_tag[i] == tag) diff --git a/mm/kasan/sw_tags.c b/mm/kasan/sw_tags.c index a518483f3965..6d7648cc3b98 100644 --- a/mm/kasan/sw_tags.c +++ b/mm/kasan/sw_tags.c @@ -174,7 +174,7 @@ void kasan_set_free_info(struct kmem_cache *cache, struct kasan_alloc_meta *alloc_meta; u8 idx = 0; - alloc_meta = get_alloc_info(cache, object); + alloc_meta = kasan_get_alloc_meta(cache, object); #ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY idx = alloc_meta->free_track_idx; @@ -191,7 +191,7 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, struct kasan_alloc_meta *alloc_meta; int i = 0; - alloc_meta = get_alloc_info(cache, object); + alloc_meta = kasan_get_alloc_meta(cache, object); #ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY for (i = 0; i < KASAN_NR_FREE_STACKS; i++) {