panic: Incrementing non-positive count 0xc001296588 on tmpfs.inode

goroutine 169 [running]:
panic({0x10f8140?, 0xc000cc20d0?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc000c07500 sp=0xc000c07450 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/fsimpl/tmpfs.(*inodeRefs).IncRef(0xc001296588)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/tmpfs/inode_refs.go:81 +0x119 fp=0xc000c07568 sp=0xc000c07500 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(0xc00021d6d8?, {0x1587498, 0xc000cc4000}, 0xc00058e900, {0x80?})
	pkg/sentry/fsimpl/tmpfs/filesystem.go:256 +0x216 fp=0xc000c075d8 sp=0xc000c07568 pc=0x90a856
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).GetDentryAt(0x40?, {0x1587498, 0xc000cc4000}, 0xa?, 0xc000c07678?, 0xc000c07677)
	pkg/sentry/vfs/vfs.go:263 +0x9f fp=0xc000c07640 sp=0xc000c075d8 pc=0x7ae45f
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).getMountpoint(0xc000c5a370?, {0x1587498, 0xc000cc4000}, 0xc000c0fa88?, 0xc000c5a370?)
	pkg/sentry/vfs/mount.go:909 +0x3f fp=0xc000c076a8 sp=0xc000c07640 pc=0x79de9f
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).UmountAt(0xc00021d6d8, {0x1587498, 0xc000cc4000}, 0xc0006e3000?, 0xc00183af00?, 0xc000c07804)
	pkg/sentry/vfs/mount.go:571 +0xdd fp=0xc000c07778 sp=0xc000c076a8 pc=0x79c5bd
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Umount2(0xc000cc4000, 0x7f1eb5801000?, {{0x7f87ff41c500}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_mount.go:164 +0x2f7 fp=0xc000c07910 sp=0xc000c07778 pc=0xb987d7
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000cc4000, 0xa6, {{0x7f87ff41c500}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000c07c50 sp=0xc000c07910 pc=0xa25e2b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000cc4000, 0xc00026f950?, {{0x7f87ff41c500}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:322 +0x4e fp=0xc000c07cb0 sp=0xc000c07c50 pc=0xa2742e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x0?, 0xc000ca5878?, {{0x7f87ff41c500}, {0xa}, {0x0}, {0xffffffff}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:282 +0x74 fp=0xc000c07d10 sp=0xc000c07cb0 pc=0xa26ff4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000704b60?)
	pkg/sentry/kernel/task_syscall.go:257 +0x3a8 fp=0xc000c07e08 sp=0xc000c07d10 pc=0xa26ce8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000cc4000?, 0xc000cc4000)
	pkg/sentry/kernel/task_run.go:269 +0x1405 fp=0xc000c07f48 sp=0xc000c07e08 pc=0xa18de5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000cc4000, 0x19)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc000c07fc0 sp=0xc000c07f48 pc=0xa17302
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc000c07fe0 sp=0xc000c07fc0 pc=0xa24325
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000c07fe8 sp=0xc000c07fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 166
	pkg/sentry/kernel/task_start.go:391 +0xf8