From 60d31b9a28f2160ae8b4b986babb6216fdae51c8 Mon Sep 17 00:00:00 2001
From: Vegard Nossum <vegard.nossum@gmail.com>
Date: Fri, 4 Apr 2008 00:54:48 +0200
Subject: [PATCH] --- yaml --- r: 151456 b: refs/heads/master c:
 5a896d9e7c921742d0437a452f991288f4dc2c42 h: refs/heads/master v: v3

---
 [refs]          |  2 +-
 trunk/mm/slub.c | 21 +++++++++++++++++++--
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index 869f53ed7a3c..300cd8d04680 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d7002857dee6e9a3ce1f78d23f37caba106b29c5
+refs/heads/master: 5a896d9e7c921742d0437a452f991288f4dc2c42
diff --git a/trunk/mm/slub.c b/trunk/mm/slub.c
index 3964d3ce4c15..1cebaa747ad3 100644
--- a/trunk/mm/slub.c
+++ b/trunk/mm/slub.c
@@ -18,6 +18,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/kmemtrace.h>
+#include <linux/kmemcheck.h>
 #include <linux/cpu.h>
 #include <linux/cpuset.h>
 #include <linux/kmemleak.h>
@@ -147,7 +148,7 @@
 		SLAB_TRACE | SLAB_DESTROY_BY_RCU | SLAB_NOLEAKTRACE)
 
 #define SLUB_MERGE_SAME (SLAB_DEBUG_FREE | SLAB_RECLAIM_ACCOUNT | \
-		SLAB_CACHE_DMA)
+		SLAB_CACHE_DMA | SLAB_NOTRACK)
 
 #ifndef ARCH_KMALLOC_MINALIGN
 #define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long long)
@@ -1092,6 +1093,13 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node)
 
 		stat(get_cpu_slab(s, raw_smp_processor_id()), ORDER_FALLBACK);
 	}
+
+	if (kmemcheck_enabled
+		&& !(s->flags & (SLAB_NOTRACK | DEBUG_DEFAULT_FLAGS)))
+	{
+		kmemcheck_alloc_shadow(s, flags, node, page, compound_order(page));
+	}
+
 	page->objects = oo_objects(oo);
 	mod_zone_page_state(page_zone(page),
 		(s->flags & SLAB_RECLAIM_ACCOUNT) ?
@@ -1165,6 +1173,9 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
 		__ClearPageSlubDebug(page);
 	}
 
+	if (kmemcheck_page_is_tracked(page))
+		kmemcheck_free_shadow(s, page, compound_order(page));
+
 	mod_zone_page_state(page_zone(page),
 		(s->flags & SLAB_RECLAIM_ACCOUNT) ?
 		NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE,
@@ -1618,7 +1629,9 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
 	if (unlikely((gfpflags & __GFP_ZERO) && object))
 		memset(object, 0, objsize);
 
+	kmemcheck_slab_alloc(s, gfpflags, object, c->objsize);
 	kmemleak_alloc_recursive(object, objsize, 1, s->flags, gfpflags);
+
 	return object;
 }
 
@@ -1751,6 +1764,7 @@ static __always_inline void slab_free(struct kmem_cache *s,
 	kmemleak_free_recursive(x, s->flags);
 	local_irq_save(flags);
 	c = get_cpu_slab(s, smp_processor_id());
+	kmemcheck_slab_free(s, object, c->objsize);
 	debug_check_no_locks_freed(object, c->objsize);
 	if (!(s->flags & SLAB_DEBUG_OBJECTS))
 		debug_check_no_obj_freed(object, c->objsize);
@@ -2625,7 +2639,8 @@ static noinline struct kmem_cache *dma_kmalloc_cache(int index, gfp_t flags)
 
 	if (!s || !text || !kmem_cache_open(s, flags, text,
 			realsize, ARCH_KMALLOC_MINALIGN,
-			SLAB_CACHE_DMA|__SYSFS_ADD_DEFERRED, NULL)) {
+			SLAB_CACHE_DMA|SLAB_NOTRACK|__SYSFS_ADD_DEFERRED,
+			NULL)) {
 		kfree(s);
 		kfree(text);
 		goto unlock_out;
@@ -4396,6 +4411,8 @@ static char *create_unique_id(struct kmem_cache *s)
 		*p++ = 'a';
 	if (s->flags & SLAB_DEBUG_FREE)
 		*p++ = 'F';
+	if (!(s->flags & SLAB_NOTRACK))
+		*p++ = 't';
 	if (p != name + 1)
 		*p++ = '-';
 	p += sprintf(p, "%07d", s->size);