Linux-libre 4.8.7-gnupck-4.8.7-gnu

1 files changed, 9 insertions, 0 deletions

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 4be518d4e..dddead146 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1947,6 +1947,15 @@ retry:
 		     current->flags & PF_EXITING))
 		goto force;
 
+	/*
+	 * Prevent unbounded recursion when reclaim operations need to
+	 * allocate memory. This might exceed the limits temporarily,
+	 * but we prefer facilitating memory reclaim and getting back
+	 * under the limit over triggering OOM kills in these cases.
+	 */
+	if (unlikely(current->flags & PF_MEMALLOC))
+		goto force;
+
 	if (unlikely(task_in_memcg_oom(current)))
 		goto nomem;