panic: Incrementing non-positive count 0xc005700058 on tmpfs.inode

goroutine 211 [running]:
panic({0x10f8140?, 0xc0080eea20?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc002ce1500 sp=0xc002ce1450 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inodeRefs).IncRef(0xc005700058)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/tmpfs/inode_refs.go:81 +0x119 fp=0xc002ce1568 sp=0xc002ce1500 pc=0x912af9
gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inode).incRef(...)
	pkg/sentry/fsimpl/tmpfs/tmpfs.go:591
gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*dentry).IncRef(...)
	pkg/sentry/fsimpl/tmpfs/tmpfs.go:447
gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*filesystem).GetDentryAt(0xc00028b6d8?, {0x1587498, 0xc0006db500}, 0xc00c38a000, {0x80?})
	pkg/sentry/fsimpl/tmpfs/filesystem.go:256 +0x216 fp=0xc002ce15d8 sp=0xc002ce1568 pc=0x90a856
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).GetDentryAt(0x40?, {0x1587498, 0xc0006db500}, 0xc?, 0xc002ce1678?, 0xc002ce1677)
	pkg/sentry/vfs/vfs.go:263 +0x9f fp=0xc002ce1640 sp=0xc002ce15d8 pc=0x7ae45f
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).getMountpoint(0xc000ad0370?, {0x1587498, 0xc0006db500}, 0xc000ace508?, 0xc000ad0370?)
	pkg/sentry/vfs/mount.go:909 +0x3f fp=0xc002ce16a8 sp=0xc002ce1640 pc=0x79de9f
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).UmountAt(0xc00028b6d8, {0x1587498, 0xc0006db500}, 0xc0007af000?, 0xc009541c00?, 0xc002ce1804)
	pkg/sentry/vfs/mount.go:571 +0xdd fp=0xc002ce1778 sp=0xc002ce16a8 pc=0x79c5bd
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Umount2(0xc0006db500, 0x0?, {{0x7f0cba172500}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_mount.go:164 +0x2f7 fp=0xc002ce1910 sp=0xc002ce1778 pc=0xb987d7
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0006db500, 0xa6, {{0x7f0cba172500}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc002ce1c50 sp=0xc002ce1910 pc=0xa25e2b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0006db500, 0xc004681950?, {{0x7f0cba172500}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4e fp=0xc002ce1cb0 sp=0xc002ce1c50 pc=0xa2742e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x0?, 0xc000a94878?, {{0x7f0cba172500}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x74 fp=0xc002ce1d10 sp=0xc002ce1cb0 pc=0xa26ff4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000b081a0?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3a8 fp=0xc002ce1e08 sp=0xc002ce1d10 pc=0xa26ce8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0?, 0xc0006db500)
	pkg/sentry/kernel/task_run.go:269 +0x1405 fp=0xc002ce1f48 sp=0xc002ce1e08 pc=0xa18de5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0006db500, 0x18)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc002ce1fc0 sp=0xc002ce1f48 pc=0xa17302
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc002ce1fe0 sp=0xc002ce1fc0 pc=0xa24325
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc002ce1fe8 sp=0xc002ce1fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 233
	pkg/sentry/kernel/task_start.go:391 +0xf8