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

goroutine 1807382 [running]:
panic({0x1115fa0?, 0x2a4c590?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc007720940 sp=0xc007720890 pc=0x43a72c
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:261
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:861 +0x378 fp=0xc0077209a0 sp=0xc007720940 pc=0x451f38
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).IncRef(0x1108f40?)
	pkg/sentry/vfs/mount.go:693 +0xa fp=0xc0077209a8 sp=0xc0077209a0 pc=0x7878ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00143e5a0, 0x0)
	pkg/sentry/vfs/namespace.go:143 +0x1be fp=0xc007720a78 sp=0xc0077209a8 pc=0x78cffe
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00143e280, 0xc0005c7540)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc007720b48 sp=0xc007720a78 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00a2a14a0, 0xc0005c74a0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc007720c18 sp=0xc007720b48 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00a2a1680, 0xc0005c7400)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc007720ce8 sp=0xc007720c18 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00a2a17c0, 0xc0005c7360)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc007720db8 sp=0xc007720ce8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00078d4a0, 0xc0005c7220)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc007720e88 sp=0xc007720db8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00078d360, 0xc0005c7180)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc007720f58 sp=0xc007720e88 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00a2a1720, 0xc0005c7040)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc007721028 sp=0xc007720f58 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00a2a15e0, 0xc0005c70e0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc0077210f8 sp=0xc007721028 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00a2a1540, 0xc0005c6fa0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc0077211c8 sp=0xc0077210f8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc0095d0960, 0xc0005c6f00)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc007721298 sp=0xc0077211c8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc009f38310, 0xc009f38320, 0xc00143e0a0, 0xc0005c6e60)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc007721368 sp=0xc007721298 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).CloneMountNamespace(0xc000436fe0, {0x15144d8, 0xc00bf4ca80}, 0xc000b80240, 0xc004f14cf0, 0xc00bf24600?, 0x6a00000?, {0x14f7f60, 0xc000436e00})
	pkg/sentry/vfs/namespace.go:186 +0x270 fp=0xc007721430 sp=0xc007721368 pc=0x78d3b0
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc00bf4ca80, 0xc007721810)
	pkg/sentry/kernel/task_clone.go:205 +0xf29 fp=0xc007721800 sp=0xc007721430 pc=0x99c089
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x0?, 0xc001ef5918?, 0x418f8b?, 0x2aa4a48?, 0x424b65?, 0x7f2d58e00000?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc0077218d0 sp=0xc007721800 pc=0xb5585d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0x2?, 0xc001ef5960?, {{0x8020000}, {0x20003840}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x68 fp=0xc007721910 sp=0xc0077218d0 pc=0xb16948
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00bf4ca80, 0x38, {{0x8020000}, {0x20003840}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc007721c50 sp=0xc007721910 pc=0x9bfc4b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00bf4ca80, 0x1?, {{0x8020000}, {0x20003840}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4e fp=0xc007721cb0 sp=0xc007721c50 pc=0x9c124e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000498238?, 0xc001ef5df8?, {{0x8020000}, {0x20003840}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x74 fp=0xc007721d10 sp=0xc007721cb0 pc=0x9c0e14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00966fe40?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3a8 fp=0xc007721e08 sp=0xc007721d10 pc=0x9c0b08
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc008e48380?, 0xc00bf4ca80)
	pkg/sentry/kernel/task_run.go:269 +0x1405 fp=0xc007721f48 sp=0xc007721e08 pc=0x9b2bc5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00bf4ca80, 0x8e29)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc007721fc0 sp=0xc007721f48 pc=0x9b10e2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:395 +0x25 fp=0xc007721fe0 sp=0xc007721fc0 pc=0x9be145
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc007721fe8 sp=0xc007721fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1807373
	pkg/sentry/kernel/task_start.go:395 +0xf8