panic: Decrementing non-positive ref count 0xc0001ea360, owned by vfs.Filesystem

goroutine 242 [running]:
panic({0xfe2ce0?, 0xc0002ea290?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc0007179f0 sp=0xc000717940 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc0001ea360, 0xc00015ddd0?)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:126 +0x10c fp=0xc000717a58 sp=0xc0007179f0 pc=0x75580c
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0xc000717ad8?, {0x1442c78?, 0xc000738a80?})
	pkg/sentry/vfs/filesystem.go:77 +0x4b fp=0xc000717a98 sp=0xc000717a58 pc=0x75504b
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc0003f56d8, {0x1442c78, 0xc000738a80})
	pkg/sentry/vfs/vfs.go:1030 +0x16e fp=0xc000717b48 sp=0xc000717a98 pc=0x7702ae
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1()
	pkg/sentry/vfs/mount.go:826 +0x28 fp=0xc000717b70 sp=0xc000717b48 pc=0x75d4e8
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc000244f20, {0x1442c78, 0xc000738a80})
	pkg/sentry/vfs/mount.go:839 +0x1e2 fp=0xc000717c10 sp=0xc000717b70 pc=0x75d442
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc000244f20, {0x1442c78, 0xc000738a80})
	pkg/sentry/vfs/mount.go:820 +0x65 fp=0xc000717c38 sp=0xc000717c10 pc=0x75d225
gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc000244f20?, 0xc00054c900?}, {0x1442c78, 0xc000738a80})
	pkg/sentry/vfs/vfs.go:1086 +0x53 fp=0xc000717c68 sp=0xc000717c38 pc=0x7703f3
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualDentry).DecRef(0xc000717cd8?, {0x1442c78?, 0xc000738a80?})
	<autogenerated>:1 +0x3e fp=0xc000717c98 sp=0xc000717c68 pc=0x77e9de
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc0003f56d8, {0x1442c78, 0xc000738a80})
	pkg/sentry/vfs/vfs.go:1030 +0x16e fp=0xc000717d48 sp=0xc000717c98 pc=0x7702ae
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).Destroy(0xc0006551a0, {0x1442c78, 0xc000738a80})
	pkg/sentry/vfs/namespace.go:201 +0x85 fp=0xc000717d80 sp=0xc000717d48 pc=0x763665
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef.func1()
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x2e fp=0xc000717da8 sp=0xc000717d80 pc=0x7f068e
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).DecRef(0x0?, 0xc000717e20)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:132 +0x42 fp=0xc000717e10 sp=0xc000717da8 pc=0x7f0342
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef(0xc000738a80?, {0x1442c78?, 0xc000738a80?})
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x52 fp=0xc000717e50 sp=0xc000717e10 pc=0x7f0632
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).DecRef(...)
	pkg/sentry/vfs/namespace.go:216
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc000738a80, 0xc000738a80)
	pkg/sentry/kernel/task_exit.go:297 +0x5a2 fp=0xc000717f48 sp=0xc000717e50 pc=0x97c062
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000738a80, 0x4)
	pkg/sentry/kernel/task_run.go:98 +0x1ef fp=0xc000717fc0 sp=0xc000717f48 pc=0x9864af
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc000717fe0 sp=0xc000717fc0 pc=0x991525
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000717fe8 sp=0xc000717fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 111
	pkg/sentry/kernel/task_start.go:391 +0xe5