From f96fa06d14dfb41d987ae5372084e593ac535b13 Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@golang.org>
Date: Fri, 3 Jul 2015 12:32:40 -0700
Subject: [PATCH] net/http/fcgi: fix race between serveRequest and cleanUp

Fixes #11552

Change-Id: I87904e9e3fb4bd1fb4c7075a4e2d0151e5bd37df
Reviewed-on: https://go-review.googlesource.com/11890
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
---
 src/net/http/fcgi/child.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/net/http/fcgi/child.go b/src/net/http/fcgi/child.go
index aba71cd5c1..da824ed717 100644
--- a/src/net/http/fcgi/child.go
+++ b/src/net/http/fcgi/child.go
@@ -289,6 +289,8 @@ func (c *child) serveRequest(req *request, body io.ReadCloser) {
 }
 
 func (c *child) cleanUp() {
+	c.mu.Lock()
+	defer c.mu.Unlock()
 	for _, req := range c.requests {
 		if req.pw != nil {
 			// race with call to Close in c.serveRequest doesn't matter because
-- 
2.50.0