panic: Decrementing non-positive ref count 0xc000631ee0, owned by vfs.Filesystem

goroutine 208041 [running]:
panic({0x10f2ce0?, 0xc005d2f220?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc008191a38 sp=0xc008191988 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc000631ee0, 0xc00300b8f0?)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:126 +0x154 fp=0xc008191aa0 sp=0xc008191a38 pc=0x791474
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0xc008191b20?, {0x1580618?, 0xc000a7d500?})
	pkg/sentry/vfs/filesystem.go:77 +0x55 fp=0xc008191ae0 sp=0xc008191aa0 pc=0x790a55
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00021d6d8, {0x1580618, 0xc000a7d500})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc008191b90 sp=0xc008191ae0 pc=0x7afedf
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1()
	pkg/sentry/vfs/mount.go:826 +0x28 fp=0xc008191bb8 sp=0xc008191b90 pc=0x79a8e8
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc0021d6420, {0x1580618, 0xc000a7d500})
	pkg/sentry/vfs/mount.go:839 +0x282 fp=0xc008191c58 sp=0xc008191bb8 pc=0x79a842
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc0021d6420, {0x1580618, 0xc000a7d500})
	pkg/sentry/vfs/mount.go:820 +0xa5 fp=0xc008191c80 sp=0xc008191c58 pc=0x79a585
gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc0021d6420?, 0xc0009df400?}, {0x1580618, 0xc000a7d500})
	pkg/sentry/vfs/vfs.go:1086 +0x67 fp=0xc008191cb0 sp=0xc008191c80 pc=0x7b0047
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualDentry).DecRef(0xc008191d20?, {0x1580618?, 0xc000a7d500?})
	<autogenerated>:1 +0x3e fp=0xc008191ce0 sp=0xc008191cb0 pc=0x7bf8be
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00021d6d8, {0x1580618, 0xc000a7d500})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc008191d90 sp=0xc008191ce0 pc=0x7afedf
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).Destroy(0xc003a14d50, {0x1580618, 0xc000a7d500})
	pkg/sentry/vfs/namespace.go:201 +0x99 fp=0xc008191dc8 sp=0xc008191d90 pc=0x7a1d99
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef.func1()
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x38 fp=0xc008191df0 sp=0xc008191dc8 pc=0x8486b8
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).DecRef(0x0?, 0xc008191e68)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:132 +0x75 fp=0xc008191e58 sp=0xc008191df0 pc=0x8481d5
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef(0xc000a7d500?, {0x1580618?, 0xc000a7d500?})
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x5c fp=0xc008191e98 sp=0xc008191e58 pc=0x84863c
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).DecRef(...)
	pkg/sentry/vfs/namespace.go:216
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc0039b3a80, 0xc000a7d500)
	pkg/sentry/kernel/task_exit.go:297 +0x56b fp=0xc008191f48 sp=0xc008191e98 pc=0xa074eb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000a7d500, 0x1a9d)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc008191fc0 sp=0xc008191f48 pc=0xa13e62
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc008191fe0 sp=0xc008191fc0 pc=0xa20e85
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc008191fe8 sp=0xc008191fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 207998
	pkg/sentry/kernel/task_start.go:391 +0xf8