WARNING: DATA RACE Write at 0x00c0022118c0 by goroutine 1022: gvisor.dev/gvisor/pkg/bufferv2.newChunk() pkg/bufferv2/chunk.go:97 +0x16f gvisor.dev/gvisor/pkg/bufferv2.NewView() pkg/bufferv2/view.go:60 +0x30 gvisor.dev/gvisor/pkg/bufferv2.NewViewSize() pkg/bufferv2/view.go:69 +0x2e gvisor.dev/gvisor/pkg/tcpip/stack.NewPacketBuffer() pkg/tcpip/stack/packet_buffer.go:184 +0xd9 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).sendNDPNS() pkg/tcpip/network/ipv6/ndp.go:1994 +0x56d gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).LinkAddressRequest() pkg/tcpip/network/ipv6/icmp.go:918 +0x324 gvisor.dev/gvisor/pkg/tcpip/stack.(*neighborEntry).handlePacketQueuedLocked.func1() pkg/tcpip/stack/neighbor_entry.go:399 +0x121 gvisor.dev/gvisor/pkg/sentry/kernel/time.AfterFunc.func1.1() pkg/sentry/kernel/time/util.go:57 +0x43 Previous read at 0x00c0022118c0 by goroutine 1260: runtime.slicecopy() GOROOT/src/runtime/slice.go:295 +0x0 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write() pkg/tcpip/link/tun/device.go:242 +0xa35 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write() pkg/sentry/devices/tundev/tundev.go:163 +0x309 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write() pkg/sentry/vfs/file_description.go:671 +0x124 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write() pkg/sentry/syscalls/linux/vfs2/read_write.go:348 +0x9c gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write() pkg/sentry/syscalls/linux/vfs2/read_write.go:317 +0x2a4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:142 +0x9b7 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:322 +0x7c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:282 +0x8e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:257 +0x495 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:253 +0x18f8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:94 +0x353 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:380 +0x47