From b0f2c3e7646df603156f1b8e8b3382f33353eb04 Mon Sep 17 00:00:00 2001
From: Jamie Liu <jamieliu@google.com>
Date: Fri, 13 Mar 2020 16:08:06 -0700
Subject: [PATCH] Fix infinite loop in semaphore.sem.wakeWaiters().

PiperOrigin-RevId: 300845134
---
 pkg/sentry/kernel/semaphore/semaphore.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkg/sentry/kernel/semaphore/semaphore.go b/pkg/sentry/kernel/semaphore/semaphore.go
index 1000f3287..c00fa1138 100644
--- a/pkg/sentry/kernel/semaphore/semaphore.go
+++ b/pkg/sentry/kernel/semaphore/semaphore.go
@@ -554,6 +554,7 @@ func (s *sem) wakeWaiters() {
 	for w := s.waiters.Front(); w != nil; {
 		if s.value < w.value {
 			// Still blocked, skip it.
+			w = w.Next()
 			continue
 		}
 		w.ch <- struct{}{}