1 files changed, 0 insertions, 95 deletions
diff --git a/test/syscalls/linux/preadv.cc b/test/syscalls/linux/preadv.cc
deleted file mode 100644
index 5b0743fe9..000000000
--- a/test/syscalls/linux/preadv.cc
+++ /dev/null
@@ -1,95 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include <sys/syscall.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include <atomic>
-#include <string>
-
-#include "gtest/gtest.h"
-#include "absl/time/clock.h"
-#include "absl/time/time.h"
-#include "test/util/file_descriptor.h"
-#include "test/util/logging.h"
-#include "test/util/memory_util.h"
-#include "test/util/temp_path.h"
-#include "test/util/test_util.h"
-#include "test/util/thread_util.h"
-#include "test/util/timer_util.h"
-
-namespace gvisor {
-namespace testing {
-
-namespace {
-
-// Stress copy-on-write. Attempts to reproduce b/38430174.
-TEST(PreadvTest, MMConcurrencyStress) {
-  // Fill a one-page file with zeroes (the contents don't really matter).
-  const auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
-      /* parent = */ GetAbsoluteTestTmpdir(),
-      /* content = */ std::string(kPageSize, 0), TempPath::kDefaultFileMode));
-  const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY));
-
-  // Get a one-page private mapping to read to.
-  const Mapping m = ASSERT_NO_ERRNO_AND_VALUE(
-      MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE));
-
-  // Repeatedly fork in a separate thread to force the mapping to become
-  // copy-on-write.
-  std::atomic<bool> done(false);
-  const ScopedThread t([&] {
-    while (!done.load()) {
-      const pid_t pid = fork();
-      TEST_CHECK(pid >= 0);
-      if (pid == 0) {
-        // In child. The parent was obviously multithreaded, so it's neither
-        // safe nor necessary to do much more than exit.
-        syscall(SYS_exit_group, 0);
-      }
-      int status;
-      ASSERT_THAT(RetryEINTR(waitpid)(pid, &status, 0),
-                  SyscallSucceedsWithValue(pid));
-      EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0)
-          << "status = " << status;
-    }
-  });
-
-  // Repeatedly read to the mapping.
-  struct iovec iov[2];
-  iov[0].iov_base = m.ptr();
-  iov[0].iov_len = kPageSize / 2;
-  iov[1].iov_base = reinterpret_cast<void*>(m.addr() + kPageSize / 2);
-  iov[1].iov_len = kPageSize / 2;
-  constexpr absl::Duration kTestDuration = absl::Seconds(5);
-  const absl::Time end = absl::Now() + kTestDuration;
-  while (absl::Now() < end) {
-    // Among other causes, save/restore cycles may cause interruptions resulting
-    // in partial reads, so we don't expect any particular return value.
-    EXPECT_THAT(RetryEINTR(preadv)(fd.get(), iov, 2, 0), SyscallSucceeds());
-  }
-
-  // Stop the other thread.
-  done.store(true);
-
-  // The test passes if it neither deadlocks nor crashes the OS.
-}
-
-}  // namespace
-
-}  // namespace testing
-}  // namespace gvisor