panic: Decrementing non-positive ref count 0xc0007335f0, owned by vfs.Filesystem

goroutine 1500778 [running]:
panic({0x10f8140?, 0xc009df1af0?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc009053a98 sp=0xc0090539e8 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc0007335f0, 0xc00c45c820?)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:126 +0x154 fp=0xc009053b00 sp=0xc009053a98 pc=0x794714
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0x120d100?, {0x1587498?, 0xc00c21ea80?})
	pkg/sentry/vfs/filesystem.go:77 +0x55 fp=0xc009053b40 sp=0xc009053b00 pc=0x793cf5
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00068afd8, {0x1587498, 0xc00c21ea80})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc009053bf0 sp=0xc009053b40 pc=0x7b317f
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1()
	pkg/sentry/vfs/mount.go:826 +0x28 fp=0xc009053c18 sp=0xc009053bf0 pc=0x79db88
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc000167ef0, {0x1587498, 0xc00c21ea80})
	pkg/sentry/vfs/mount.go:839 +0x282 fp=0xc009053cb8 sp=0xc009053c18 pc=0x79dae2
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc000167ef0, {0x1587498, 0xc00c21ea80})
	pkg/sentry/vfs/mount.go:820 +0xa5 fp=0xc009053ce0 sp=0xc009053cb8 pc=0x79d825
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00068afd8, {0x1587498, 0xc00c21ea80})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc009053d90 sp=0xc009053ce0 pc=0x7b317f
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).Destroy(0xc004837050, {0x1587498, 0xc00c21ea80})
	pkg/sentry/vfs/namespace.go:201 +0x99 fp=0xc009053dc8 sp=0xc009053d90 pc=0x7a5039
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef.func1()
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x38 fp=0xc009053df0 sp=0xc009053dc8 pc=0x84b958
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).DecRef(0x0?, 0xc009053e68)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:132 +0x75 fp=0xc009053e58 sp=0xc009053df0 pc=0x84b475
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef(0xc00c21ea80?, {0x1587498?, 0xc00c21ea80?})
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x5c fp=0xc009053e98 sp=0xc009053e58 pc=0x84b8dc
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).DecRef(...)
	pkg/sentry/vfs/namespace.go:216
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc002adb280, 0xc00c21ea80)
	pkg/sentry/kernel/task_exit.go:297 +0x56b fp=0xc009053f48 sp=0xc009053e98 pc=0xa0a98b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00c21ea80, 0xcdf8)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc009053fc0 sp=0xc009053f48 pc=0xa17302
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc009053fe0 sp=0xc009053fc0 pc=0xa24325
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc009053fe8 sp=0xc009053fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1500614
	pkg/sentry/kernel/task_start.go:391 +0xf8