panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x78870a]

goroutine 2482811 [running]:
panic({0x115d8e0, 0x2a25e90})
	GOROOT/src/runtime/panic.go:987 +0x3bb fp=0xc00593ac90 sp=0xc00593abd0 pc=0x436abb
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:260
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:837 +0x37d fp=0xc00593acf0 sp=0xc00593ac90 pc=0x44e0fd
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).IncRef(0x114bde0?)
	pkg/sentry/vfs/mount.go:644 +0xa fp=0xc00593acf8 sp=0xc00593acf0 pc=0x78870a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005c01e0, {0x1535080, 0xc008979500}, 0xc00ad56c10, 0xc00ad56c20, 0xc0005bebe0, 0x0)
	pkg/sentry/vfs/namespace.go:138 +0x1b2 fp=0xc00593adc8 sp=0xc00593acf8 pc=0x78e092
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005c01e0, {0x1535080, 0xc008979500}, 0xc00ad56c10, 0xc00ad56c20, 0xc0005be820, 0x0)
	pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc00593ae98 sp=0xc00593adc8 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005c01e0, {0x1535080, 0xc008979500}, 0xc00ad56c10, 0xc00ad56c20, 0xc0089121e0, 0x0)
	pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc00593af68 sp=0xc00593ae98 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005c01e0, {0x1535080, 0xc008979500}, 0xc00ad56c10, 0xc00ad56c20, 0xc002fdcb40, 0x0)
	pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc00593b038 sp=0xc00593af68 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005c01e0, {0x1535080, 0xc008979500}, 0xc00ad56c10, 0xc00ad56c20, 0xc008912280, 0x0)
	pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc00593b108 sp=0xc00593b038 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005c01e0, {0x1535080, 0xc008979500}, 0xc00ad56c10, 0xc00ad56c20, 0xc008913540, 0xc0118bcaa0)
	pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc00593b1d8 sp=0xc00593b108 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005c01e0, {0x1535080, 0xc008979500}, 0xc00ad56c10, 0xc00ad56c20, 0xc0096b6960, 0xc0118bca00)
	pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc00593b2a8 sp=0xc00593b1d8 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).updateRootAndCWD(0xc0005c01e0, {0x1535080, 0xc008979500}, 0xc00ad56c10, 0xc00ad56c20, 0xc0005be140, 0xc0118bc960)
	pkg/sentry/vfs/namespace.go:142 +0x27a fp=0xc00593b378 sp=0xc00593b2a8 pc=0x78e15a
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).CloneMountNamespace(0xc0005c01e0, {0x1535080, 0xc008979500}, 0xc0006a8f60, 0xc0007343c0, 0xc000101c00?, 0xc0004aa630?, {0x1518e00, 0xc0005c0000})
	pkg/sentry/vfs/namespace.go:181 +0x285 fp=0xc00593b440 sp=0xc00593b378 pc=0x78e465
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc008979500, 0xc00593b818)
	pkg/sentry/kernel/task_clone.go:198 +0xf09 fp=0xc00593b808 sp=0xc00593b440 pc=0x9b3f29
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0xc0000122e8?, 0xc008979500?, 0x55871efabf88?, 0x0?, 0x0?, 0x0?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc00593b8d8 sp=0xc00593b808 pc=0xb7621d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc008979500?, 0xc006cc79b8?, {{0x48864000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x6e fp=0xc00593b918 sp=0xc00593b8d8 pc=0xb3558e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc008979500, 0x38, {{0x48864000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc00593bc58 sp=0xc00593b918 pc=0x9d728b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc008979500, 0x0?, {{0x48864000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc00593bcb8 sp=0xc00593bc58 pc=0x9d8874
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0004be040?, 0xc006cc7e00?, {{0x48864000}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc00593bd18 sp=0xc00593bcb8 pc=0x9d8465
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00628ce70?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc00593be10 sp=0xc00593bd18 pc=0x9d812c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc00d66be80?, 0xc008979500)
	pkg/sentry/kernel/task_run.go:269 +0x144a fp=0xc00593bf48 sp=0xc00593be10 pc=0x9c9bea
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc008979500, 0x966)
	pkg/sentry/kernel/task_run.go:98 +0x25c fp=0xc00593bfc0 sp=0xc00593bf48 pc=0x9c809c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:390 +0x2a fp=0xc00593bfe0 sp=0xc00593bfc0 pc=0x9d570a
runtime.goexit()
	src/runtime/asm_amd64.s:1598 +0x1 fp=0xc00593bfe8 sp=0xc00593bfe0 pc=0x46d4c1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:390 +0x105