[PATCH] sparse: hugetlb sysctl annotation

include/linux/hugetlb.h

@@ -12,7 +12,7 @@ static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
 	return vma->vm_flags & VM_HUGETLB;
 }
 
-int hugetlb_sysctl_handler(struct ctl_table *, int, struct file *, void *, size_t *);
+int hugetlb_sysctl_handler(struct ctl_table *, int, struct file *, void __user *, size_t *);
 int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *);
 int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, struct page **, struct vm_area_struct **, unsigned long *, int *, int);
 void zap_hugepage_range(struct vm_area_struct *, unsigned long, unsigned long);

mm/hugetlb.c

@@ -182,7 +182,8 @@ static unsigned long set_max_huge_pages(unsigned long count)
 
 #ifdef CONFIG_SYSCTL
 int hugetlb_sysctl_handler(struct ctl_table *table, int write,
-			   struct file *file, void *buffer, size_t *length)
+			   struct file *file, void __user *buffer,
+			   size_t *length)
 {
 	proc_doulongvec_minmax(table, write, file, buffer, length);
 	max_huge_pages = set_max_huge_pages(max_huge_pages);