diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 90daab0c8b96054e3bd18334876af07e998b2c1d..a5ab0b2f213b3a3165f4b6d2e1230c8714337c14 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -692,6 +692,9 @@ static int kill_accessing_process(struct task_struct *p, unsigned long pfn,
 	};
 	priv.tk.tsk = p;
 
+	if (!p->mm)
+		return -EFAULT;
+
 	mmap_read_lock(p->mm);
 	ret = walk_page_range(p->mm, 0, TASK_SIZE, &hwp_walk_ops,
 			      (void *)&priv);