WARNING: DATA RACE
Write at 0x00c008335e44 by goroutine 568:
  runtime.slicecopy()
      GOROOT/src/runtime/slice.go:295 +0x0
  gvisor.dev/gvisor/pkg/safemem.Copy()
      pkg/safemem/block_unsafe.go:199 +0x4b9
  gvisor.dev/gvisor/pkg/safemem.CopySeq()
      pkg/safemem/seq_unsafe.go:282 +0x277
  gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).CopyIn.func1()
      pkg/sentry/mm/io.go:164 +0xca
  gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).withInternalMappings()
      pkg/sentry/mm/io.go:522 +0x812
  gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).CopyIn()
      pkg/sentry/mm/io.go:163 +0x2c4
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).CopyInBytes()
      pkg/sentry/kernel/task_usermem.go:57 +0xb7
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.copyTimespecIn()
      pkg/sentry/syscalls/linux/timespec.go:32 +0xe6
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.ClockNanosleep()
      pkg/sentry/syscalls/linux/sys_time.go:206 +0xd6
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:142 +0xab7
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:322 +0x8d
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:282 +0xc4
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:257 +0x53a
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:253 +0x1e2a
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:94 +0x2c1
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
      pkg/sentry/kernel/task_start.go:378 +0x47

Previous read at 0x00c008335e44 by goroutine 309:
  encoding/binary.littleEndian.Uint64()
      GOROOT/src/encoding/binary/binary.go:78 +0x111
  gvisor.dev/gvisor/pkg/sentry/kernel.makeIovec()
      pkg/sentry/kernel/task_usermem.go:265 +0xbe
  gvisor.dev/gvisor/pkg/sentry/kernel.copyInIovecs()
      pkg/sentry/kernel/task_usermem.go:231 +0x3a9
  gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInIovecs()
      pkg/sentry/kernel/task_usermem.go:411 +0x73
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.doProcessVMReadWrite.func1()
      pkg/sentry/syscalls/linux/sys_process_vm.go:98 +0xb1
  gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).WithTaskMutexLocked()
      pkg/sentry/kernel/task_usermem.go:364 +0xe8
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.doProcessVMReadWrite()
      pkg/sentry/syscalls/linux/sys_process_vm.go:174 +0x3ab
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.processVMRW()
      pkg/sentry/syscalls/linux/sys_process_vm.go:83 +0x3a8
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.ProcessVMWritev()
      pkg/sentry/syscalls/linux/sys_process_vm.go:41 +0x69
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:142 +0xab7
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:322 +0x8d
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:282 +0xc4
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:257 +0x53a
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:253 +0x1e2a
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:94 +0x2c1
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
      pkg/sentry/kernel/task_start.go:378 +0x47