fatal error: concurrent map read and map write

goroutine 538 [running, locked to thread]:
runtime.throw(0xba9858, 0x21)
	GOROOT/src/runtime/panic.go:616 +0x81 fp=0xc420f21c28 sp=0xc420f21c08 pc=0x429441
runtime.mapaccess2_fast64(0xa9ede0, 0xc4213b2060, 0xc4206aa4e0, 0xa37940, 0x0)
	GOROOT/src/runtime/hashmap_fast.go:141 +0x1aa fp=0xc420f21c50 sp=0xc420f21c28 pc=0x409e9a
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ring0/pagetables.(*PCIDs).Assign(0xc4208ca3c0, 0xc4206aa4e0, 0xc42041f568)
	pkg/sentry/platform/ring0/pagetables/pcids_x86.go:59 +0x5c fp=0xc420f21cf0 sp=0xc420f21c50 pc=0x86441c
gvisor.googlesource.com/gvisor/pkg/sentry/platform/kvm.(*vCPU).SwitchToUser(0xc420619c00, 0xc4206b9200, 0xc420833300, 0xc4206aa4e0, 0x0, 0x0, 0x7f1788676ae0, 0x0, 0x0)
	pkg/sentry/platform/kvm/machine_amd64.go:214 +0x70b fp=0xc420f21d68 sp=0xc420f21cf0 pc=0x8765eb
gvisor.googlesource.com/gvisor/pkg/sentry/platform/kvm.(*context).Switch(0xc42041f560, 0xc52c00, 0xc420cea000, 0xc588c0, 0xc4206b9200, 0x7f17ffffffff, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/platform/kvm/context.go:68 +0x1ed fp=0xc420f21e28 sp=0xc420f21d68 pc=0x86b6ad
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc420add600, 0xc46620, 0x0)
	pkg/sentry/kernel/task_run.go:209 +0x17d fp=0xc420f21f88 sp=0xc420f21e28 pc=0x6e73ed
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc420add600, 0x3e)
	pkg/sentry/kernel/task_run.go:95 +0x174 fp=0xc420f21fd0 sp=0xc420f21f88 pc=0x6e6f04
runtime.goexit()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/linux_amd64_pure_stripped/stdlib~/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc420f21fd8 sp=0xc420f21fd0 pc=0x455f31
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:258 +0x100