panic: Decrementing non-positive ref count 0xc000032f70, owned by vfs.Filesystem

goroutine 988735 [running]:
panic({0x10f2ce0?, 0xc00b020170?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc000d0da98 sp=0xc000d0d9e8 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc000032f70, 0xc00b022b20?)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:126 +0x154 fp=0xc000d0db00 sp=0xc000d0da98 pc=0x791474
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0xc000d0db80?, {0x1580618?, 0xc008af9500?})
	pkg/sentry/vfs/filesystem.go:77 +0x55 fp=0xc000d0db40 sp=0xc000d0db00 pc=0x790a55
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc0000d2c58, {0x1580618, 0xc008af9500})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc000d0dbf0 sp=0xc000d0db40 pc=0x7afedf
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1()
	pkg/sentry/vfs/mount.go:826 +0x28 fp=0xc000d0dc18 sp=0xc000d0dbf0 pc=0x79a8e8
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc0034f62c0, {0x1580618, 0xc008af9500})
	pkg/sentry/vfs/mount.go:839 +0x282 fp=0xc000d0dcb8 sp=0xc000d0dc18 pc=0x79a842
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc0034f62c0, {0x1580618, 0xc008af9500})
	pkg/sentry/vfs/mount.go:820 +0xa5 fp=0xc000d0dce0 sp=0xc000d0dcb8 pc=0x79a585
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc0000d2c58, {0x1580618, 0xc008af9500})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc000d0dd90 sp=0xc000d0dce0 pc=0x7afedf
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).Destroy(0xc0068629f0, {0x1580618, 0xc008af9500})
	pkg/sentry/vfs/namespace.go:201 +0x99 fp=0xc000d0ddc8 sp=0xc000d0dd90 pc=0x7a1d99
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef.func1()
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x38 fp=0xc000d0ddf0 sp=0xc000d0ddc8 pc=0x8486b8
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).DecRef(0x0?, 0xc000d0de68)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:132 +0x75 fp=0xc000d0de58 sp=0xc000d0ddf0 pc=0x8481d5
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef(0xc008af9500?, {0x1580618?, 0xc008af9500?})
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x5c fp=0xc000d0de98 sp=0xc000d0de58 pc=0x84863c
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).DecRef(...)
	pkg/sentry/vfs/namespace.go:216
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc0011c0d00, 0xc008af9500)
	pkg/sentry/kernel/task_exit.go:297 +0x56b fp=0xc000d0df48 sp=0xc000d0de98 pc=0xa074eb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc008af9500, 0x89ac)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc000d0dfc0 sp=0xc000d0df48 pc=0xa13e62
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc000d0dfe0 sp=0xc000d0dfc0 pc=0xa20e85
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc000d0dfe8 sp=0xc000d0dfe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 988732
	pkg/sentry/kernel/task_start.go:391 +0xf8