mm, kasan: stackdepot implementation. Enable stackdepot for SLAB

[mirror_ubuntu-artful-kernel.git] / mm / kasan / kasan.h

diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 7b9e4ab9b66b43316f9c5ffdf5c290feb293e33e..30a2f0ba0e097e0b270f58be50bcd7ff7e4177fa 100644 (file)
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -2,6 +2,7 @@
 #define __MM_KASAN_KASAN_H
 
 #include <linux/kasan.h>
+#include <linux/stackdepot.h>
 
 #define KASAN_SHADOW_SCALE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT)
 #define KASAN_SHADOW_MASK       (KASAN_SHADOW_SCALE_SIZE - 1)
@@ -64,16 +65,18 @@ enum kasan_state {
        KASAN_STATE_FREE
 };
 
+#define KASAN_STACK_DEPTH 64
+
 struct kasan_track {
-       u64 cpu : 6;                    /* for NR_CPUS = 64 */
-       u64 pid : 16;                   /* 65536 processes */
-       u64 when : 42;                  /* ~140 years */
+       u32 pid;
+       depot_stack_handle_t stack;
 };
 
 struct kasan_alloc_meta {
+       struct kasan_track track;
        u32 state : 2;  /* enum kasan_state */
        u32 alloc_size : 30;
-       struct kasan_track track;
+       u32 reserved;
 };
 
 struct kasan_free_meta {