panic: Incrementing non-positive count 0xc000321700 on kernel.ProcessGroup

goroutine 599 [running]:
panic(0xfccbe0, 0xc0006a00d0)
	GOROOT/src/runtime/panic.go:1064 +0x470 fp=0xc0004cd8b0 sp=0xc0004cd7f8 pc=0x437110
gvisor.dev/gvisor/pkg/sentry/kernel.(*ProcessGroupRefs).IncRef(0xc000321700)
	bazel-out/k8-fastbuild-ST-3bfd66f45e612c1a5c797474a25664e227d81bf914f3b08a40e00b2e2692afa4/bin/pkg/sentry/kernel/process_group_refs.go:72 +0x15f fp=0xc0004cd928 sp=0xc0004cd8b0 pc=0x9a2edf
gvisor.dev/gvisor/pkg/sentry/kernel.(*ProcessGroup).incRefWithParent(...)
	pkg/sentry/kernel/sessions.go:144
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).CreateProcessGroup.func1(0xc000909000)
	pkg/sentry/kernel/sessions.go:407 +0x5d fp=0xc0004cd950 sp=0xc0004cd928 pc=0x9eb27d
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).forEachChildThreadGroupLocked(0xc000908800, 0xc0004cda30)
	pkg/sentry/kernel/thread_group.go:340 +0x77 fp=0xc0004cd9e0 sp=0xc0004cd950 pc=0x9d3837
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).CreateProcessGroup(0xc000908800, 0x0, 0x0)
	pkg/sentry/kernel/sessions.go:406 +0x294 fp=0xc0004cda68 sp=0xc0004cd9e0 pc=0x9ad494
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Setpgid(0xc0004c4a80, 0x3, 0x0, 0x434c49, 0x0, 0x1, 0x1, 0x3d, 0x13a93, 0xc0004cdbe4, ...)
	pkg/sentry/syscalls/linux/sys_thread.go:616 +0xa5 fp=0xc0004cdaf8 sp=0xc0004cda68 pc=0xa56a05
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0004c4a80, 0x6d, 0x3, 0x0, 0x434c49, 0x0, 0x1, 0x1, 0x1, 0x11a5d40, ...)
	pkg/sentry/kernel/task_syscall.go:104 +0x13c fp=0xc0004cdc58 sp=0xc0004cdaf8 pc=0x9ce97c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0004c4a80, 0x6d, 0x3, 0x0, 0x434c49, 0x0, 0x1, 0x1, 0x1, 0x1)
	pkg/sentry/kernel/task_syscall.go:239 +0x66 fp=0xc0004cdce0 sp=0xc0004cdc58 pc=0x9cfb46
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0004c4a80, 0x6d, 0x3, 0x0, 0x434c49, 0x0, 0x1, 0x1, 0xde45ce, 0xc0006602e0)
	pkg/sentry/kernel/task_syscall.go:199 +0x98 fp=0xc0004cdd40 sp=0xc0004cdce0 pc=0x9cf6f8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0004c4a80, 0x2, 0xc0004c4a80)
	pkg/sentry/kernel/task_syscall.go:174 +0x15c fp=0xc0004cde10 sp=0xc0004cdd40 pc=0x9cf09c
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0004c4a80, 0x12f6d00, 0x0)
	pkg/sentry/kernel/task_run.go:282 +0xc45 fp=0xc0004cdf60 sp=0xc0004cde10 pc=0x9c34a5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0004c4a80, 0x10)
	pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc0004cdfd0 sp=0xc0004cdf60 pc=0x9c216f
runtime.goexit()
	src/runtime/asm_amd64.s:1374 +0x1 fp=0xc0004cdfd8 sp=0xc0004cdfd0 pc=0x470681
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:323 +0xfe