[PATCH] Fix vma argument in get_usr_pages() for gate areas

The system call gate area handling called vm_normal_page() with the
wrong vma (which was always NULL, and caused an oops).

Signed-off-by: Nick Piggin <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

mm/memory.c

···
 				return i ? : -EFAULT;
 			}
 			if (pages) {
-				struct page *page = vm_normal_page(vma, start, *pte);
+				struct page *page = vm_normal_page(gate_vma, start, *pte);
 				pages[i] = page;
 				if (page)
 					get_page(page);