kmemleak: Add the slub memory allocation/freeing hooks

This patch adds the callbacks to kmemleak_(alloc|free) functions from the
slub allocator.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>

1 files changed, 4 insertions, 1 deletions

diff --git a/mm/slub.c b/mm/slub.c
index 5e805a6fe36c..6674a7907b0c 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -20,6 +20,7 @@
 #include <linux/kmemtrace.h>
 #include <linux/cpu.h>
 #include <linux/cpuset.h>
+#include <linux/kmemleak.h>
 #include <linux/mempolicy.h>
 #include <linux/ctype.h>
 #include <linux/debugobjects.h>
@@ -143,7 +144,7 @@
  * Set of flags that will prevent slab merging
  */
 #define SLUB_NEVER_MERGE (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \
-                SLAB_TRACE | SLAB_DESTROY_BY_RCU)
+                SLAB_TRACE | SLAB_DESTROY_BY_RCU | SLAB_NOLEAKTRACE)
 
 #define SLUB_MERGE_SAME (SLAB_DEBUG_FREE | SLAB_RECLAIM_ACCOUNT | \
                 SLAB_CACHE_DMA)
@@ -1617,6 +1618,7 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
         if (unlikely((gfpflags & __GFP_ZERO) && object))
                 memset(object, 0, objsize);
 
+        kmemleak_alloc_recursive(object, objsize, 1, s->flags, gfpflags);
         return object;
 }
 
@@ -1746,6 +1748,7 @@ static __always_inline void slab_free(struct kmem_cache *s,
         struct kmem_cache_cpu *c;
         unsigned long flags;
 
+        kmemleak_free_recursive(x, s->flags);
         local_irq_save(flags);
         c = get_cpu_slab(s, smp_processor_id());
         debug_check_no_locks_freed(object, c->objsize);