3 files changed, 18 insertions, 0 deletions

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 08151d4de489..961c1a788c61 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -104,6 +104,7 @@
 #include <linux/io.h>
 #include <asm/system.h>
 #include <linux/uaccess.h>
+#include <linux/kmemleak.h>
 
 #define MAX_NR_CON_DRIVER 16
 
@@ -2880,6 +2881,12 @@ static int __init con_init(void)
          */
         for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) {
                 vc_cons[currcons].d = vc = alloc_bootmem(sizeof(struct vc_data));
+                /*
+                 * Kmemleak does not track the memory allocated via
+                 * alloc_bootmem() but this block contains pointers to
+                 * other blocks allocated via kmalloc.
+                 */
+                kmemleak_alloc(vc, sizeof(struct vc_data), 1, GFP_ATOMIC);
                 INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK);
                 visual_init(vc, currcons, 1);
                 vc->vc_screenbuf = (unsigned short *)alloc_bootmem(vc->vc_screenbuf_size);
diff --git a/fs/block_dev.c b/fs/block_dev.c
index f45dbc18dd17..d250f807fd83 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -25,6 +25,7 @@
 #include <linux/uio.h>
 #include <linux/namei.h>
 #include <linux/log2.h>
+#include <linux/kmemleak.h>
 #include <asm/uaccess.h>
 #include "internal.h"
 
@@ -492,6 +493,11 @@ void __init bdev_cache_init(void)
         bd_mnt = kern_mount(&bd_type);
         if (IS_ERR(bd_mnt))
                 panic("Cannot create bdev pseudo-fs");
+        /*
+         * This vfsmount structure is only used to obtain the
+         * blockdev_superblock, so tell kmemleak not to report it.
+         */
+        kmemleak_not_leak(bd_mnt);
         blockdev_superblock = bd_mnt->mnt_sb;   /* For writeback */
 }
 
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 1581ff235c7e..26fd9d12f050 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -86,7 +86,12 @@ struct percpu_data {
         void *ptrs[1];
 };
 
+/* pointer disguising messes up the kmemleak objects tracking */
+#ifndef CONFIG_DEBUG_KMEMLEAK
 #define __percpu_disguise(pdata) (struct percpu_data *)~(unsigned long)(pdata)
+#else
+#define __percpu_disguise(pdata) (struct percpu_data *)(pdata)
+#endif
 
 #define per_cpu_ptr(ptr, cpu)                                           \
 ({                                                                      \