panic: Decrementing non-positive ref count 0xc0005c0240, owned by vfs.Filesystem

goroutine 117 [running]:
panic({0x10f2ce0?, 0xc00067a910?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc0006eba38 sp=0xc0006eb988 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc0005c0240, 0xc000796d90?)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:126 +0x154 fp=0xc0006ebaa0 sp=0xc0006eba38 pc=0x791474
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0xc0006ebb20?, {0x1580618?, 0xc0008a8a80?})
	pkg/sentry/vfs/filesystem.go:77 +0x55 fp=0xc0006ebae0 sp=0xc0006ebaa0 pc=0x790a55
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc0005d2fd8, {0x1580618, 0xc0008a8a80})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc0006ebb90 sp=0xc0006ebae0 pc=0x7afedf
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1()
	pkg/sentry/vfs/mount.go:826 +0x28 fp=0xc0006ebbb8 sp=0xc0006ebb90 pc=0x79a8e8
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc00023af20, {0x1580618, 0xc0008a8a80})
	pkg/sentry/vfs/mount.go:839 +0x282 fp=0xc0006ebc58 sp=0xc0006ebbb8 pc=0x79a842
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc00023af20, {0x1580618, 0xc0008a8a80})
	pkg/sentry/vfs/mount.go:820 +0xa5 fp=0xc0006ebc80 sp=0xc0006ebc58 pc=0x79a585
gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc00023af20?, 0xc00034e900?}, {0x1580618, 0xc0008a8a80})
	pkg/sentry/vfs/vfs.go:1086 +0x67 fp=0xc0006ebcb0 sp=0xc0006ebc80 pc=0x7b0047
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualDentry).DecRef(0xc0006ebd20?, {0x1580618?, 0xc0008a8a80?})
	<autogenerated>:1 +0x3e fp=0xc0006ebce0 sp=0xc0006ebcb0 pc=0x7bf8be
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc0005d2fd8, {0x1580618, 0xc0008a8a80})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc0006ebd90 sp=0xc0006ebce0 pc=0x7afedf
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).Destroy(0xc00064f620, {0x1580618, 0xc0008a8a80})
	pkg/sentry/vfs/namespace.go:201 +0x99 fp=0xc0006ebdc8 sp=0xc0006ebd90 pc=0x7a1d99
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef.func1()
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x38 fp=0xc0006ebdf0 sp=0xc0006ebdc8 pc=0x8486b8
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).DecRef(0x0?, 0xc0006ebe68)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:132 +0x75 fp=0xc0006ebe58 sp=0xc0006ebdf0 pc=0x8481d5
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef(0xc0008a8a80?, {0x1580618?, 0xc0008a8a80?})
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x5c fp=0xc0006ebe98 sp=0xc0006ebe58 pc=0x84863c
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).DecRef(...)
	pkg/sentry/vfs/namespace.go:216
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc0008a8a80, 0xc0008a8a80)
	pkg/sentry/kernel/task_exit.go:297 +0x56b fp=0xc0006ebf48 sp=0xc0006ebe98 pc=0xa074eb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0008a8a80, 0x4)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc0006ebfc0 sp=0xc0006ebf48 pc=0xa13e62
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc0006ebfe0 sp=0xc0006ebfc0 pc=0xa20e85
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc0006ebfe8 sp=0xc0006ebfe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 239
	pkg/sentry/kernel/task_start.go:391 +0xf8