From 33101752501fafea99d77f34bbd65f3e0083d22e Mon Sep 17 00:00:00 2001
From: Bhasker Hariharan <bhaskerh@google.com>
Date: Mon, 2 Mar 2020 14:43:52 -0800
Subject: Fix data-race when reading/writing e.amss.

PiperOrigin-RevId: 298451319
---
 test/syscalls/linux/tcp_socket.cc | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'test/syscalls/linux')

diff --git a/test/syscalls/linux/tcp_socket.cc b/test/syscalls/linux/tcp_socket.cc
index c4591a3b9..579463384 100644
--- a/test/syscalls/linux/tcp_socket.cc
+++ b/test/syscalls/linux/tcp_socket.cc
@@ -1349,6 +1349,21 @@ TEST_P(SimpleTcpSocketTest, RecvOnClosedSocket) {
               SyscallFailsWithErrno(ENOTCONN));
 }
 
+TEST_P(SimpleTcpSocketTest, TCPConnectSoRcvBufRace) {
+  auto s = ASSERT_NO_ERRNO_AND_VALUE(
+      Socket(GetParam(), SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP));
+  sockaddr_storage addr =
+      ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam()));
+  socklen_t addrlen = sizeof(addr);
+
+  RetryEINTR(connect)(s.get(), reinterpret_cast<struct sockaddr*>(&addr),
+                      addrlen);
+  int buf_sz = 1 << 18;
+  EXPECT_THAT(
+      setsockopt(s.get(), SOL_SOCKET, SO_RCVBUF, &buf_sz, sizeof(buf_sz)),
+      SyscallSucceedsWithValue(0));
+}
+
 INSTANTIATE_TEST_SUITE_P(AllInetTests, SimpleTcpSocketTest,
                          ::testing::Values(AF_INET, AF_INET6));
 
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