| Message ID | db6ce7b46d47aa26056e9eae5c2aa49a3160a566.1655150842.git.andreyknvl@google.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | kasan: switch tag-based modes to stack ring from per-object metadata | expand |
On Mon, 13 Jun 2022 at 22:16, <andrey.konovalov@linux.dev> wrote: > > From: Andrey Konovalov <andreyknvl@google.com> > > Remove implementations of the metadata-related functions for the tag-based > modes. > > The following patches in the series will provide alternative > implementations. > > As of this patch, the tag-based modes no longer collect alloc and free > stack traces. This functionality will be restored later in the series. > > Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Marco Elver <elver@google.com> > --- > mm/kasan/tags.c | 33 ++------------------------------- > 1 file changed, 2 insertions(+), 31 deletions(-) > > diff --git a/mm/kasan/tags.c b/mm/kasan/tags.c > index 2e200969a4b8..f11c89505c77 100644 > --- a/mm/kasan/tags.c > +++ b/mm/kasan/tags.c > @@ -19,54 +19,25 @@ > > void kasan_init_object_meta(struct kmem_cache *cache, const void *object) > { > - struct kasan_alloc_meta *alloc_meta; > - > - alloc_meta = kasan_get_alloc_meta(cache, object); > - if (alloc_meta) > - __memset(alloc_meta, 0, sizeof(*alloc_meta)); > } > > void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags) > { > - struct kasan_alloc_meta *alloc_meta; > - > - alloc_meta = kasan_get_alloc_meta(cache, object); > - if (alloc_meta) > - kasan_set_track(&alloc_meta->alloc_track, flags); > } > > void kasan_save_free_info(struct kmem_cache *cache, > void *object, u8 tag) > { > - struct kasan_alloc_meta *alloc_meta; > - > - alloc_meta = kasan_get_alloc_meta(cache, object); > - if (!alloc_meta) > - return; > - > - kasan_set_track(&alloc_meta->free_track, GFP_NOWAIT); > } > > struct kasan_track *kasan_get_alloc_track(struct kmem_cache *cache, > void *object) > { > - struct kasan_alloc_meta *alloc_meta; > - > - alloc_meta = kasan_get_alloc_meta(cache, object); > - if (!alloc_meta) > - return NULL; > - > - return &alloc_meta->alloc_track; > + return NULL; > } > > struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, > void *object, u8 tag) > { > - struct kasan_alloc_meta *alloc_meta; > - > - alloc_meta = kasan_get_alloc_meta(cache, object); > - if (!alloc_meta) > - return NULL; > - > - return &alloc_meta->free_track; > + return NULL; > } > -- > 2.25.1 > > -- > You received this message because you are subscribed to the Google Groups "kasan-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an email to kasan-dev+unsubscribe@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgid/kasan-dev/db6ce7b46d47aa26056e9eae5c2aa49a3160a566.1655150842.git.andreyknvl%40google.com.
diff --git a/mm/kasan/tags.c b/mm/kasan/tags.c index 2e200969a4b8..f11c89505c77 100644 --- a/mm/kasan/tags.c +++ b/mm/kasan/tags.c @@ -19,54 +19,25 @@ void kasan_init_object_meta(struct kmem_cache *cache, const void *object) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (alloc_meta) - __memset(alloc_meta, 0, sizeof(*alloc_meta)); } void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (alloc_meta) - kasan_set_track(&alloc_meta->alloc_track, flags); } void kasan_save_free_info(struct kmem_cache *cache, void *object, u8 tag) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return; - - kasan_set_track(&alloc_meta->free_track, GFP_NOWAIT); } struct kasan_track *kasan_get_alloc_track(struct kmem_cache *cache, void *object) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return NULL; - - return &alloc_meta->alloc_track; + return NULL; } struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, void *object, u8 tag) { - struct kasan_alloc_meta *alloc_meta; - - alloc_meta = kasan_get_alloc_meta(cache, object); - if (!alloc_meta) - return NULL; - - return &alloc_meta->free_track; + return NULL; }