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

goroutine 1882407 [running]:
panic({0x1115fa0?, 0x2a4c410?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc00a0dae98 sp=0xc00a0dade8 pc=0x43a72c
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:261
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:861 +0x378 fp=0xc00a0daef8 sp=0xc00a0dae98 pc=0x451f38
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).IncRef(0x1108f40?)
	pkg/sentry/vfs/mount.go:693 +0xa fp=0xc00a0daf00 sp=0xc00a0daef8 pc=0x7878ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00057da60, {0x15144d8, 0xc0314cf500}, 0xc00945ab50, 0xc00945ab60, 0xc0005686e0, 0x0)
	pkg/sentry/vfs/namespace.go:143 +0x1be fp=0xc00a0dafd0 sp=0xc00a0daf00 pc=0x78cffe
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00057da60, {0x15144d8, 0xc0314cf500}, 0xc00945ab50, 0xc00945ab60, 0xc000568460, 0xc002bb5540)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00a0db0a0 sp=0xc00a0dafd0 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00057da60, {0x15144d8, 0xc0314cf500}, 0xc00945ab50, 0xc00945ab60, 0xc002bb40a0, 0xc002bb55e0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00a0db170 sp=0xc00a0db0a0 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00057da60, {0x15144d8, 0xc0314cf500}, 0xc00945ab50, 0xc00945ab60, 0xc000568e60, 0xc002bb54a0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00a0db240 sp=0xc00a0db170 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00057da60, {0x15144d8, 0xc0314cf500}, 0xc00945ab50, 0xc00945ab60, 0xc0005692c0, 0xc002bb5400)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00a0db310 sp=0xc00a0db240 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00057da60, {0x15144d8, 0xc0314cf500}, 0xc00945ab50, 0xc00945ab60, 0xc0005683c0, 0xc002bb5360)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00a0db3e0 sp=0xc00a0db310 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).CloneMountNamespace(0xc00057da60, {0x15144d8, 0xc0314cf500}, 0xc000604c60, 0xc0005d2ba0, 0x0?, 0x0?, {0x14f7f60, 0xc00057d880})
	pkg/sentry/vfs/namespace.go:186 +0x270 fp=0xc00a0db4a8 sp=0xc00a0db3e0 pc=0x78d3b0
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc0314cf500, 0xc00a0db8a0)
	pkg/sentry/kernel/task_clone.go:205 +0xf29 fp=0xc00a0db878 sp=0xc00a0db4a8 pc=0x99c089
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone3(0xc0314cf500?, 0x7eefbaa01000?, {{0x7eefbb189fb0}, {0x58}, {0x7eefbb189fb0}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/syscalls/linux/sys_thread.go:252 +0xe6 fp=0xc00a0db910 sp=0xc00a0db878 pc=0xb55a66
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0314cf500, 0x1b3, {{0x7eefbb189fb0}, {0x58}, {0x7eefbb189fb0}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc00a0dbc50 sp=0xc00a0db910 pc=0x9bfc4b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0314cf500, 0xc006c430e0?, {{0x7eefbb189fb0}, {0x58}, {0x7eefbb189fb0}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4e fp=0xc00a0dbcb0 sp=0xc00a0dbc50 pc=0x9c124e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00a0dbdf8?, 0xd4de25?, {{0x7eefbb189fb0}, {0x58}, {0x7eefbb189fb0}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:282 +0x74 fp=0xc00a0dbd10 sp=0xc00a0dbcb0 pc=0x9c0e14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc015d5e9c0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3a8 fp=0xc00a0dbe08 sp=0xc00a0dbd10 pc=0x9c0b08
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00652cf00?, 0xc0314cf500)
	pkg/sentry/kernel/task_run.go:269 +0x1405 fp=0xc00a0dbf48 sp=0xc00a0dbe08 pc=0x9b2bc5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0314cf500, 0x267f)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc00a0dbfc0 sp=0xc00a0dbf48 pc=0x9b10e2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:395 +0x25 fp=0xc00a0dbfe0 sp=0xc00a0dbfc0 pc=0x9be145
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc00a0dbfe8 sp=0xc00a0dbfe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1882404
	pkg/sentry/kernel/task_start.go:395 +0xf8