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-rw-r--r--include/linux/slab.h23
1 files changed, 19 insertions, 4 deletions
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 3627d5c1b..508bd827e 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -20,7 +20,7 @@
* Flags to pass to kmem_cache_create().
* The ones marked DEBUG are only valid if CONFIG_DEBUG_SLAB is set.
*/
-#define SLAB_DEBUG_FREE 0x00000100UL /* DEBUG: Perform (expensive) checks on free */
+#define SLAB_CONSISTENCY_CHECKS 0x00000100UL /* DEBUG: Perform (expensive) checks on alloc/free */
#define SLAB_RED_ZONE 0x00000400UL /* DEBUG: Red zone objs in a cache */
#define SLAB_POISON 0x00000800UL /* DEBUG: Poison objects */
#define SLAB_HWCACHE_ALIGN 0x00002000UL /* Align objs on cache lines */
@@ -92,6 +92,12 @@
# define SLAB_ACCOUNT 0x00000000UL
#endif
+#ifdef CONFIG_KASAN
+#define SLAB_KASAN 0x08000000UL
+#else
+#define SLAB_KASAN 0x00000000UL
+#endif
+
/* The following flags affect the page allocator grouping pages by mobility */
#define SLAB_RECLAIM_ACCOUNT 0x00020000UL /* Objects are reclaimable */
#define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */
@@ -314,7 +320,7 @@ void *kmem_cache_alloc(struct kmem_cache *, gfp_t flags) __assume_slab_alignment
void kmem_cache_free(struct kmem_cache *, void *);
/*
- * Bulk allocation and freeing operations. These are accellerated in an
+ * Bulk allocation and freeing operations. These are accelerated in an
* allocator specific way to avoid taking locks repeatedly or building
* metadata structures unnecessarily.
*
@@ -323,6 +329,15 @@ void kmem_cache_free(struct kmem_cache *, void *);
void kmem_cache_free_bulk(struct kmem_cache *, size_t, void **);
int kmem_cache_alloc_bulk(struct kmem_cache *, gfp_t, size_t, void **);
+/*
+ * Caller must not use kfree_bulk() on memory not originally allocated
+ * by kmalloc(), because the SLOB allocator cannot handle this.
+ */
+static __always_inline void kfree_bulk(size_t size, void **p)
+{
+ kmem_cache_free_bulk(NULL, size, p);
+}
+
#ifdef CONFIG_NUMA
void *__kmalloc_node(size_t size, gfp_t flags, int node) __assume_kmalloc_alignment;
void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node) __assume_slab_alignment;
@@ -361,7 +376,7 @@ static __always_inline void *kmem_cache_alloc_trace(struct kmem_cache *s,
{
void *ret = kmem_cache_alloc(s, flags);
- kasan_kmalloc(s, ret, size);
+ kasan_kmalloc(s, ret, size, flags);
return ret;
}
@@ -372,7 +387,7 @@ kmem_cache_alloc_node_trace(struct kmem_cache *s,
{
void *ret = kmem_cache_alloc_node(s, gfpflags, node);
- kasan_kmalloc(s, ret, size);
+ kasan_kmalloc(s, ret, size, gfpflags);
return ret;
}
#endif /* CONFIG_TRACING */