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

goroutine 635018 [running]:
panic({0x1115fa0?, 0x2a4c590?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc00145ee98 sp=0xc00145ede8 pc=0x43a72c
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:261
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:861 +0x378 fp=0xc00145eef8 sp=0xc00145ee98 pc=0x451f38
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).IncRef(0x1108f40?)
	pkg/sentry/vfs/mount.go:693 +0xa fp=0xc00145ef00 sp=0xc00145eef8 pc=0x7878ea
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00011afe0, {0x15144d8, 0xc006634a80}, 0xc00ad14fd0, 0xc00ad14fe0, 0xc000129220, 0x0)
	pkg/sentry/vfs/namespace.go:143 +0x1be fp=0xc00145efd0 sp=0xc00145ef00 pc=0x78cffe
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00011afe0, {0x15144d8, 0xc006634a80}, 0xc00ad14fd0, 0xc00ad14fe0, 0xc000128e60, 0xc00574a8c0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00145f0a0 sp=0xc00145efd0 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00011afe0, {0x15144d8, 0xc006634a80}, 0xc00ad14fd0, 0xc00ad14fe0, 0xc00574a780, 0xc00574a960)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00145f170 sp=0xc00145f0a0 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00011afe0, {0x15144d8, 0xc006634a80}, 0xc00ad14fd0, 0xc00ad14fe0, 0xc0087a3cc0, 0xc00574a6e0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00145f240 sp=0xc00145f170 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00011afe0, {0x15144d8, 0xc006634a80}, 0xc00ad14fd0, 0xc00ad14fe0, 0xc00574a820, 0xc00574a640)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00145f310 sp=0xc00145f240 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc00011afe0, {0x15144d8, 0xc006634a80}, 0xc00ad14fd0, 0xc00ad14fe0, 0xc000128320, 0xc00574a5a0)
	pkg/sentry/vfs/namespace.go:147 +0x27a fp=0xc00145f3e0 sp=0xc00145f310 pc=0x78d0ba
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).CloneMountNamespace(0xc00011afe0, {0x15144d8, 0xc006634a80}, 0xc00079cd20, 0xc0004fdf50, 0x0?, 0x0?, {0x14f7f60, 0xc00011ae00})
	pkg/sentry/vfs/namespace.go:186 +0x270 fp=0xc00145f4a8 sp=0xc00145f3e0 pc=0x78d3b0
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc006634a80, 0xc00145f8a0)
	pkg/sentry/kernel/task_clone.go:205 +0xf29 fp=0xc00145f878 sp=0xc00145f4a8 pc=0x99c089
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone3(0x2?, 0xc00145f960?, {{0x7fdc90252fb0}, {0x58}, {0x7fdc90252fb0}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/syscalls/linux/sys_thread.go:252 +0xe6 fp=0xc00145f910 sp=0xc00145f878 pc=0xb55a66
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc006634a80, 0x1b3, {{0x7fdc90252fb0}, {0x58}, {0x7fdc90252fb0}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc00145fc50 sp=0xc00145f910 pc=0x9bfc4b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc006634a80, 0x1?, {{0x7fdc90252fb0}, {0x58}, {0x7fdc90252fb0}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4e fp=0xc00145fcb0 sp=0xc00145fc50 pc=0x9c124e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0001c4238?, 0xc00145fdf8?, {{0x7fdc90252fb0}, {0x58}, {0x7fdc90252fb0}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:282 +0x74 fp=0xc00145fd10 sp=0xc00145fcb0 pc=0x9c0e14
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc005bbf3f0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3a8 fp=0xc00145fe08 sp=0xc00145fd10 pc=0x9c0b08
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc008291880?, 0xc006634a80)
	pkg/sentry/kernel/task_run.go:269 +0x1405 fp=0xc00145ff48 sp=0xc00145fe08 pc=0x9b2bc5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc006634a80, 0xb66d)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc00145ffc0 sp=0xc00145ff48 pc=0x9b10e2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:395 +0x25 fp=0xc00145ffe0 sp=0xc00145ffc0 pc=0x9be145
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc00145ffe8 sp=0xc00145ffe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 635000
	pkg/sentry/kernel/task_start.go:395 +0xf8