panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x7878ea]

goroutine 2825371 [running]:
panic({0x1115fa0?, 0x2a4c590?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc04987b4f0 sp=0xc04987b440 pc=0x43a72c
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:261
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:861 +0x378 fp=0xc04987b550 sp=0xc04987b4f0 pc=0x451f38
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).IncRef(0x1108f40?)
	pkg/sentry/vfs/mount.go:693 +0xa fp=0xc04987b558 sp=0xc04987b550 pc=0x7878ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc00052cfa0, 0x0)
	pkg/sentry/vfs/namespace.go:143 +0x1be fp=0xc04987b628 sp=0xc04987b558 pc=0x78cffe
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc00052cf00, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987b6f8 sp=0xc04987b628 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc00e912320, 0x0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987b7c8 sp=0xc04987b6f8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc001aabf40, 0xc059838820)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987b898 sp=0xc04987b7c8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc0105ae5a0, 0xc059838aa0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987b968 sp=0xc04987b898 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc0105ae640, 0xc059838a00)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987ba38 sp=0xc04987b968 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc03cc5dd60, 0xc059838960)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987bb08 sp=0xc04987ba38 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea000, 0xc0598388c0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987bbd8 sp=0xc04987bb08 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea460, 0xc059838780)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987bca8 sp=0xc04987bbd8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea780, 0xc0598386e0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987bd78 sp=0xc04987bca8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea820, 0xc059838640)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987be48 sp=0xc04987bd78 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea6e0, 0xc0598385a0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987bf18 sp=0xc04987be48 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea8c0, 0xc059838500)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987bfe8 sp=0xc04987bf18 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea960, 0xc059838460)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c0b8 sp=0xc04987bfe8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eaa00, 0xc0598383c0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c188 sp=0xc04987c0b8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea3c0, 0xc059838320)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c258 sp=0xc04987c188 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eaaa0, 0xc059838280)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c328 sp=0xc04987c258 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eab40, 0xc0598381e0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c3f8 sp=0xc04987c328 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea320, 0xc059838140)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c4c8 sp=0xc04987c3f8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eabe0, 0xc0598380a0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c598 sp=0xc04987c4c8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eac80, 0xc059838000)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c668 sp=0xc04987c598 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea280, 0xc047e4bf40)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c738 sp=0xc04987c668 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea1e0, 0xc047e4bea0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c808 sp=0xc04987c738 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eadc0, 0xc047e4be00)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c8d8 sp=0xc04987c808 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eaf00, 0xc047e4bd60)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987c9a8 sp=0xc04987c8d8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eafa0, 0xc047e4bcc0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987ca78 sp=0xc04987c9a8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eb040, 0xc047e4bc20)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987cb48 sp=0xc04987ca78 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eae60, 0xc047e4bb80)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987cc18 sp=0xc04987cb48 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eb0e0, 0xc047e4bae0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987cce8 sp=0xc04987cc18 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ead20, 0xc047e4ba40)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987cdb8 sp=0xc04987cce8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eb180, 0xc047e4b9a0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987ce88 sp=0xc04987cdb8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eb220, 0xc047e4b900)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987cf58 sp=0xc04987ce88 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea140, 0xc047e4b860)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987d028 sp=0xc04987cf58 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eb2c0, 0xc047e4b7c0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987d0f8 sp=0xc04987d028 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2eb360, 0xc047e4b720)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987d1c8 sp=0xc04987d0f8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc01d2ea0a0, 0xc047e4b680)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987d298 sp=0xc04987d1c8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc058d350d0, 0xc058d350e0, 0xc00052cd20, 0xc047e4b5e0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc04987d368 sp=0xc04987d298 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).CloneMountNamespace(0xc000030fe0, {0x15144d8, 0xc059632a80}, 0xc00060db00, 0xc000645200, 0xc058d2f800?, 0xe600000?, {0x14f7f60, 0xc000030e00})
	pkg/sentry/vfs/namespace.go:186 +0x270 fp=0xc04987d430 sp=0xc04987d368 pc=0x78d3b0
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc059632a80, 0xc04987d810)
	pkg/sentry/kernel/task_clone.go:205 +0xf29 fp=0xc04987d800 sp=0xc04987d430 pc=0x99c089
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x0?, 0xc01bd79918?, 0x418f8b?, 0x2aa4a48?, 0x424b65?, 0x7f73f3200000?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc04987d8d0 sp=0xc04987d800 pc=0xb5585d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x2?, 0xc01bd79960?, {{0x20000}, {0x20000090}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x68 fp=0xc04987d910 sp=0xc04987d8d0 pc=0xb16948
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc059632a80, 0x38, {{0x20000}, {0x20000090}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc04987dc50 sp=0xc04987d910 pc=0x9bfc4b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc059632a80, 0x1?, {{0x20000}, {0x20000090}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4e fp=0xc04987dcb0 sp=0xc04987dc50 pc=0x9c124e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000116238?, 0xc01bd79df8?, {{0x20000}, {0x20000090}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x74 fp=0xc04987dd10 sp=0xc04987dcb0 pc=0x9c0e14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0559a36b0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3a8 fp=0xc04987de08 sp=0xc04987dd10 pc=0x9c0b08
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0595fe300?, 0xc059632a80)
	pkg/sentry/kernel/task_run.go:269 +0x1405 fp=0xc04987df48 sp=0xc04987de08 pc=0x9b2bc5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc059632a80, 0x54ed)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc04987dfc0 sp=0xc04987df48 pc=0x9b10e2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:395 +0x25 fp=0xc04987dfe0 sp=0xc04987dfc0 pc=0x9be145
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc04987dfe8 sp=0xc04987dfe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 2825358
	pkg/sentry/kernel/task_start.go:395 +0xf8