WARNING: DATA RACE
Write at 0x00c000f4f658 by goroutine 5716:
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Unshare()
      pkg/sentry/kernel/task_clone.go:705 +0x12f9
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Unshare()
      pkg/sentry/syscalls/linux/sys_thread.go:453 +0x4e
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:143 +0x94b
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:323 +0x71
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:283 +0x93
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:258 +0x48f
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:269 +0x1ec8
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:97 +0x4c9
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
      pkg/sentry/kernel/task_start.go:416 +0x44

Previous read at 0x00c000f4f658 by goroutine 5727:
  gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).checkAndPreventSharingOutsideTG.func1()
      pkg/sentry/kernel/fs_context.go:205 +0x44
  gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).ForEachTask()
      pkg/sentry/kernel/threads.go:520 +0x10c
  gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).checkAndPreventSharingOutsideTG()
      pkg/sentry/kernel/fs_context.go:204 +0x124
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runExecveAfterExecveCredsLock).execute()
      pkg/sentry/kernel/task_exec.go:155 +0x3c4
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:97 +0x4c9
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
      pkg/sentry/kernel/task_start.go:416 +0x44