panic: Decrementing non-positive ref count 0xc00078e820, owned by vfs.Filesystem

goroutine 43357 [running]:
panic({0x10f8140?, 0xc003423330?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc00217ba38 sp=0xc00217b988 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc00078e820, 0xc003436090?)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:126 +0x154 fp=0xc00217baa0 sp=0xc00217ba38 pc=0x794714
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0xc00217bb20?, {0x1587498?, 0xc00285ea80?})
	pkg/sentry/vfs/filesystem.go:77 +0x55 fp=0xc00217bae0 sp=0xc00217baa0 pc=0x793cf5
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc0005dafd8, {0x1587498, 0xc00285ea80})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc00217bb90 sp=0xc00217bae0 pc=0x7b317f
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1()
	pkg/sentry/vfs/mount.go:826 +0x28 fp=0xc00217bbb8 sp=0xc00217bb90 pc=0x79db88
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc002864370, {0x1587498, 0xc00285ea80})
	pkg/sentry/vfs/mount.go:839 +0x282 fp=0xc00217bc58 sp=0xc00217bbb8 pc=0x79dae2
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc002864370, {0x1587498, 0xc00285ea80})
	pkg/sentry/vfs/mount.go:820 +0xa5 fp=0xc00217bc80 sp=0xc00217bc58 pc=0x79d825
gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc002864370?, 0xc0012d7800?}, {0x1587498, 0xc00285ea80})
	pkg/sentry/vfs/vfs.go:1086 +0x67 fp=0xc00217bcb0 sp=0xc00217bc80 pc=0x7b32e7
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualDentry).DecRef(0xc00217bd20?, {0x1587498?, 0xc00285ea80?})
	<autogenerated>:1 +0x3e fp=0xc00217bce0 sp=0xc00217bcb0 pc=0x7c2b5e
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc0005dafd8, {0x1587498, 0xc00285ea80})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc00217bd90 sp=0xc00217bce0 pc=0x7b317f
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).Destroy(0xc000c6b3e0, {0x1587498, 0xc00285ea80})
	pkg/sentry/vfs/namespace.go:201 +0x99 fp=0xc00217bdc8 sp=0xc00217bd90 pc=0x7a5039
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef.func1()
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x38 fp=0xc00217bdf0 sp=0xc00217bdc8 pc=0x84b958
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).DecRef(0x0?, 0xc00217be68)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:132 +0x75 fp=0xc00217be58 sp=0xc00217bdf0 pc=0x84b475
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef(0xc00285ea80?, {0x1587498?, 0xc00285ea80?})
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x5c fp=0xc00217be98 sp=0xc00217be58 pc=0x84b8dc
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).DecRef(...)
	pkg/sentry/vfs/namespace.go:216
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc002926b00, 0xc00285ea80)
	pkg/sentry/kernel/task_exit.go:297 +0x56b fp=0xc00217bf48 sp=0xc00217be98 pc=0xa0a98b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00285ea80, 0x4e4)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc00217bfc0 sp=0xc00217bf48 pc=0xa17302
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc00217bfe0 sp=0xc00217bfc0 pc=0xa24325
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc00217bfe8 sp=0xc00217bfe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 43295
	pkg/sentry/kernel/task_start.go:391 +0xf8