diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 1134dfb3dab0..87515949b09d 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1710,6 +1710,7 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf,
 			else if (ret < 0)
 				break;
 
+			flags &= ~PT_TYPE_NONE
 			pt_type = pt_range_walk_start(&ptw, vma, vma->vm_start, vma->vm_end, flags);
 			while (pt_type != PTW_DONE) {