diff --git a/mm/usercopy.c b/mm/usercopy.c
index 51411f9..ac85aeb 100644
--- a/mm/usercopy.c
+++ b/mm/usercopy.c
@@ -167,6 +167,8 @@
 	const void *end = ptr + n - 1;
 	struct page *endpage;
 	bool is_reserved, is_cma;
+	const void * const stack = task_stack_page(current);
+	const void * const stackend = stack + THREAD_SIZE;
 
 	/*
 	 * Sometimes the kernel data regions are not marked Reserved (see
@@ -191,6 +193,10 @@
 	    end <= (const void *)__bss_stop)
 		return;
 
+	/* Allow stack region to span multiple pages */
+	if (ptr >= stack && end <= stackend)
+		return;
+
 	/* Is the object wholly within one base page? */
 	if (likely(((unsigned long)ptr & (unsigned long)PAGE_MASK) ==
 		   ((unsigned long)end & (unsigned long)PAGE_MASK)))