WARNING: DATA RACE
Write at 0x00c004a36628 by goroutine 446:
  gvisor.dev/gvisor/pkg/bufferv2.newChunk()
      pkg/bufferv2/chunk.go:97 +0x1b7
  gvisor.dev/gvisor/pkg/bufferv2.NewView()
      pkg/bufferv2/view.go:60 +0x44
  gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).sendNDPNS()
      pkg/tcpip/network/ipv6/ndp.go:1981 +0xbd
  gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).LinkAddressRequest()
      pkg/tcpip/network/ipv6/icmp.go:918 +0x345
  gvisor.dev/gvisor/pkg/tcpip/stack.(*neighborEntry).handlePacketQueuedLocked.func1()
      pkg/tcpip/stack/neighbor_entry.go:399 +0x142
  gvisor.dev/gvisor/pkg/sentry/kernel/time.AfterFunc.func1.1()
      pkg/sentry/kernel/time/util.go:57 +0x58

Previous read at 0x00c004a36628 by goroutine 204:
  runtime.slicebytetostring()
      GOROOT/src/runtime/string.go:81 +0x0
  gvisor.dev/gvisor/pkg/tcpip/header.IPv6.DestinationAddress()
      pkg/tcpip/header/ipv6.go:220 +0x15b
  gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processExtensionHeader()
      pkg/tcpip/network/ipv6/ipv6.go:1330 +0xf3
  gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processExtensionHeaders()
      pkg/tcpip/network/ipv6/ipv6.go:1436 +0x431
  gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).deliverPacketLocally()
      pkg/tcpip/network/ipv6/ipv6.go:1325 +0x184
  gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handleValidatedPacket()
      pkg/tcpip/network/ipv6/ipv6.go:1304 +0x514
  gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket()
      pkg/tcpip/network/ipv6/ipv6.go:1090 +0x6ab
  gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket()
      pkg/tcpip/stack/nic.go:736 +0x181
  gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket()
      pkg/tcpip/link/nested/nested.go:59 +0xc1
  gvisor.dev/gvisor/pkg/tcpip/link/packetsocket.(*endpoint).DeliverNetworkPacket()
      pkg/tcpip/link/packetsocket/packetsocket.go:46 +0x69
  gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectInbound()
      pkg/tcpip/link/channel/channel.go:194 +0x66
  gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write()
      pkg/tcpip/link/tun/device.go:249 +0x7c5
  gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write()
      pkg/sentry/devices/tundev/tundev.go:164 +0x552
  gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write()
      pkg/sentry/vfs/file_description.go:674 +0x14b
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write()
      pkg/sentry/syscalls/linux/vfs2/read_write.go:348 +0xad
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write()
      pkg/sentry/syscalls/linux/vfs2/read_write.go:317 +0x34e
  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:380 +0x47