4 files changed, 9 insertions, 5 deletions

diff --git a/mm/Kconfig b/mm/Kconfig
index 4e9937ac3529..391ffc54d136 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -29,7 +29,7 @@ config FLATMEM_MANUAL
           If unsure, choose this option (Flat Memory) over any other.
 
 config DISCONTIGMEM_MANUAL
-        bool "Discontigious Memory"
+        bool "Discontiguous Memory"
         depends on ARCH_DISCONTIGMEM_ENABLE
         help
           This option provides enhanced support for discontiguous
@@ -52,7 +52,7 @@ config SPARSEMEM_MANUAL
           memory hotplug systems.  This is normal.
 
           For many other systems, this will be an alternative to
-          "Discontigious Memory".  This option provides some potential
+          "Discontiguous Memory".  This option provides some potential
           performance benefits, along with decreased code complexity,
           but it is newer, and more experimental.
 
diff --git a/mm/mmap.c b/mm/mmap.c
index 12334aecf8ad..fa11d91242e8 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1640,7 +1640,7 @@ static void unmap_vma_list(struct mm_struct *mm, struct vm_area_struct *vma)
 /*
  * Get rid of page table information in the indicated region.
  *
- * Called with the page table lock held.
+ * Called with the mm semaphore held.
  */
 static void unmap_region(struct mm_struct *mm,
                 struct vm_area_struct *vma, struct vm_area_struct *prev,
@@ -1993,6 +1993,9 @@ int insert_vm_struct(struct mm_struct * mm, struct vm_area_struct * vma)
         __vma = find_vma_prepare(mm,vma->vm_start,&prev,&rb_link,&rb_parent);
         if (__vma && __vma->vm_start < vma->vm_end)
                 return -ENOMEM;
+        if ((vma->vm_flags & VM_ACCOUNT) &&
+             security_vm_enough_memory(vma_pages(vma)))
+                return -ENOMEM;
         vma_link(mm, vma, prev, rb_link, rb_parent);
         return 0;
 }
diff --git a/mm/mprotect.c b/mm/mprotect.c
index e9fbd013ad9a..57577f63b305 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -248,7 +248,8 @@ sys_mprotect(unsigned long start, size_t len, unsigned long prot)
 
                 newflags = vm_flags | (vma->vm_flags & ~(VM_READ | VM_WRITE | VM_EXEC));
 
-                if ((newflags & ~(newflags >> 4)) & 0xf) {
+                /* newflags >> 4 shift VM_MAY% in place of VM_% */
+                if ((newflags & ~(newflags >> 4)) & (VM_READ | VM_WRITE | VM_EXEC)) {
                         error = -EACCES;
                         goto out;
                 }
diff --git a/mm/slab.c b/mm/slab.c
index 9e876d6dfad9..437d3388054b 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -659,7 +659,7 @@ static inline kmem_cache_t *__find_general_cachep(size_t size,
         * kmem_cache_create(), or __kmalloc(), before
         * the generic caches are initialized.
         */
-        BUG_ON(csizep->cs_cachep == NULL);
+        BUG_ON(malloc_sizes[INDEX_AC].cs_cachep == NULL);
 #endif
         while (size > csizep->cs_size)
                 csizep++;