panic: Decrementing non-positive ref count 0xc000887860, owned by vfs.Filesystem

goroutine 565733 [running]:
panic({0x10f8140?, 0xc006564b60?})
	GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc003193a98 sp=0xc0031939e8 pc=0x43a72c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FilesystemRefs).DecRef(0xc000887860, 0xc009ad7680?)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/filesystem_refs.go:126 +0x154 fp=0xc003193b00 sp=0xc003193a98 pc=0x794714
gvisor.dev/gvisor/pkg/sentry/vfs.(*Filesystem).DecRef(0xc003193b80?, {0x1587498?, 0xc0097cd500?})
	pkg/sentry/vfs/filesystem.go:77 +0x55 fp=0xc003193b40 sp=0xc003193b00 pc=0x793cf5
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00028b6d8, {0x1587498, 0xc0097cd500})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc003193bf0 sp=0xc003193b40 pc=0x7b317f
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy.func1()
	pkg/sentry/vfs/mount.go:826 +0x28 fp=0xc003193c18 sp=0xc003193bf0 pc=0x79db88
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).destroy(0xc0018d18c0, {0x1587498, 0xc0097cd500})
	pkg/sentry/vfs/mount.go:839 +0x282 fp=0xc003193cb8 sp=0xc003193c18 pc=0x79dae2
gvisor.dev/gvisor/pkg/sentry/vfs.(*Mount).DecRef(0xc0018d18c0, {0x1587498, 0xc0097cd500})
	pkg/sentry/vfs/mount.go:820 +0xa5 fp=0xc003193ce0 sp=0xc003193cb8 pc=0x79d825
gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).unlockMounts(0xc00028b6d8, {0x1587498, 0xc0097cd500})
	pkg/sentry/vfs/vfs.go:1030 +0x1df fp=0xc003193d90 sp=0xc003193ce0 pc=0x7b317f
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).Destroy(0xc008330e40, {0x1587498, 0xc0097cd500})
	pkg/sentry/vfs/namespace.go:201 +0x99 fp=0xc003193dc8 sp=0xc003193d90 pc=0x7a5039
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef.func1()
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x38 fp=0xc003193df0 sp=0xc003193dc8 pc=0x84b958
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).DecRef(0x0?, 0xc003193e68)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:132 +0x75 fp=0xc003193e58 sp=0xc003193df0 pc=0x84b475
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*Inode).DecRef(0xc0097cd500?, {0x1587498?, 0xc0097cd500?})
	pkg/sentry/fsimpl/nsfs/nsfs.go:96 +0x5c fp=0xc003193e98 sp=0xc003193e58 pc=0x84b8dc
gvisor.dev/gvisor/pkg/sentry/vfs.(*MountNamespace).DecRef(...)
	pkg/sentry/vfs/namespace.go:216
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc00687a200, 0xc0097cd500)
	pkg/sentry/kernel/task_exit.go:297 +0x56b fp=0xc003193f48 sp=0xc003193e98 pc=0xa0a98b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0097cd500, 0x4c94)
	pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc003193fc0 sp=0xc003193f48 pc=0xa17302
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1()
	pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc003193fe0 sp=0xc003193fc0 pc=0xa24325
runtime.goexit()
	src/runtime/asm_amd64.s:1650 +0x1 fp=0xc003193fe8 sp=0xc003193fe0 pc=0x471241
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 565422
	pkg/sentry/kernel/task_start.go:391 +0xf8