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

goroutine 592745 [running]:
panic({0x1115fa0?, 0x2a4c590?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc000ec01f0 sp=0xc000ec0140 pc=0x43a72c
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:261
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:861 +0x378 fp=0xc000ec0250 sp=0xc000ec01f0 pc=0x451f38
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).IncRef(0x1108f40?)
	pkg/sentry/vfs/mount.go:693 +0xa fp=0xc000ec0258 sp=0xc000ec0250 pc=0x7878ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc000144aa0, 0x0)
	pkg/sentry/vfs/namespace.go:143 +0x1be fp=0xc000ec0328 sp=0xc000ec0258 pc=0x78cffe
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc000144820, 0xc003b90d20)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec03f8 sp=0xc000ec0328 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001a90960, 0xc003b90c80)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec04c8 sp=0xc000ec03f8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc0021b2b40, 0xc003b90be0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0598 sp=0xc000ec04c8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001bea640, 0xc003b90b40)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0668 sp=0xc000ec0598 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001bea6e0, 0xc003b90aa0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0738 sp=0xc000ec0668 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001bea780, 0xc003b90a00)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0808 sp=0xc000ec0738 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001bea8c0, 0xc003b90820)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec08d8 sp=0xc000ec0808 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001beaa00, 0xc003b90960)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec09a8 sp=0xc000ec08d8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001beabe0, 0xc003b908c0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0a78 sp=0xc000ec09a8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001beac80, 0xc003b90780)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0b48 sp=0xc000ec0a78 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001beae60, 0xc003b906e0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0c18 sp=0xc000ec0b48 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001beafa0, 0xc003b90640)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0ce8 sp=0xc000ec0c18 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001beaf00, 0xc003b905a0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0db8 sp=0xc000ec0ce8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001beadc0, 0xc003b90500)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0e88 sp=0xc000ec0db8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001beaaa0, 0xc003b90460)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec0f58 sp=0xc000ec0e88 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001bea960, 0xc003b90320)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec1028 sp=0xc000ec0f58 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001bea820, 0xc003b90280)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec10f8 sp=0xc000ec1028 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001366fa0, 0xc003b901e0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec11c8 sp=0xc000ec10f8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc001367180, 0xc003b90140)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec1298 sp=0xc000ec11c8 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc004ac4d90, 0xc004ac4da0, 0xc000144780, 0xc003b900a0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc000ec1368 sp=0xc000ec1298 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).CloneMountNamespace(0xc00022efe0, {0x15144d8, 0xc00b5b6a80}, 0xc00063aea0, 0xc000986570, 0xc000c3ac00?, 0xfc00000?, {0x14f7f60, 0xc00022ee00})
	pkg/sentry/vfs/namespace.go:186 +0x270 fp=0xc000ec1430 sp=0xc000ec1368 pc=0x78d3b0
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc00b5b6a80, 0xc000ec1810)
	pkg/sentry/kernel/task_clone.go:205 +0xf29 fp=0xc000ec1800 sp=0xc000ec1430 pc=0x99c089
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x0?, 0xc00b5b7230?, 0xc000c3ac00?, 0xfffffffffffbfeff?, 0x7fde15800000?, 0x7fde15a00000?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc000ec18d0 sp=0xc000ec1800 pc=0xb5585d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc00b5b6a80?, 0x7fde15801000?, {{0x20000}, {0x20004000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x68 fp=0xc000ec1910 sp=0xc000ec18d0 pc=0xb16948
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00b5b6a80, 0x38, {{0x20000}, {0x20004000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000ec1c50 sp=0xc000ec1910 pc=0x9bfc4b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00b5b6a80, 0x1?, {{0x20000}, {0x20004000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4e fp=0xc000ec1cb0 sp=0xc000ec1c50 pc=0x9c124e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000430238?, 0xc002389df8?, {{0x20000}, {0x20004000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x74 fp=0xc000ec1d10 sp=0xc000ec1cb0 pc=0x9c0e14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00afaab00?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3a8 fp=0xc000ec1e08 sp=0xc000ec1d10 pc=0x9c0b08
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00b1cf980?, 0xc00b5b6a80)
	pkg/sentry/kernel/task_run.go:269 +0x1405 fp=0xc000ec1f48 sp=0xc000ec1e08 pc=0x9b2bc5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00b5b6a80, 0x893e)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc000ec1fc0 sp=0xc000ec1f48 pc=0x9b10e2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:395 +0x25 fp=0xc000ec1fe0 sp=0xc000ec1fc0 pc=0x9be145
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000ec1fe8 sp=0xc000ec1fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 592654
	pkg/sentry/kernel/task_start.go:395 +0xf8