diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index d2fa42006d8fe96cbc8fc0413d710c1df9a4255e..9ab97cef0daa001dded3c6d667e95ea4134fc0a7 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -195,7 +195,7 @@ static int show_map_internal(struct seq_file *m, void *v, struct mem_size_stats
 
 static int show_map(struct seq_file *m, void *v)
 {
-	return show_map_internal(m, v, 0);
+	return show_map_internal(m, v, NULL);
 }
 
 static void smaps_pte_range(struct vm_area_struct *vma, pmd_t *pmd,