panic: Incrementing non-positive ref count

goroutine 3305016 [running]:
gvisor.dev/gvisor/pkg/refs.(*AtomicRefCount).IncRef(...)
	pkg/refs/refcounter.go:370
gvisor.dev/gvisor/pkg/sentry/fs.(*Dirent).IncRef(0xc000319a20)
	pkg/sentry/fs/dirent.go:1309 +0xf7
gvisor.dev/gvisor/pkg/sentry/fs.(*Mount).Root(...)
	pkg/sentry/fs/mounts.go:106
gvisor.dev/gvisor/pkg/sentry/fs/proc.forEachMount(0xc0015d2a80, 0xc0006df010)
	pkg/sentry/fs/proc/mounts.go:59 +0x2bd
gvisor.dev/gvisor/pkg/sentry/fs/proc.(*mountInfoFile).ReadSeqFileData(0xc0010184b8, 0x13d18e0, 0xc0015d3500, 0x0, 0x0, 0x8ae2a2, 0x8ae916, 0xc00126c5d8, 0x15ade30a40000000)
	pkg/sentry/fs/proc/mounts.go:90 +0xd1
gvisor.dev/gvisor/pkg/sentry/fs/proc/seqfile.(*SeqFile).updateSourceLocked(0xc00126c5b0, 0x13d18e0, 0xc0015d3500, 0x0)
	pkg/sentry/fs/proc/seqfile/seqfile.go:180 +0x136
DIAGNOSIS:
retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-overlay-host-race-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer