panic: ptrace status unexpected: got 31, wanted stopped

goroutine 567854 [running]:
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).wait(0xc000ed6870, 0x0, 0xc9a9)
	pkg/sentry/platform/ptrace/subprocess.go:323 +0x3fb
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscall(0xc000ed6870, 0xc000f5acb0, 0xc000f5ae48, 0x2, 0x2)
	pkg/sentry/platform/ptrace/subprocess.go:390 +0xc3
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*thread).syscallIgnoreInterrupt(0xc000ed6870, 0xc000ed6880, 0xb, 0xc000f5ae48, 0x2, 0x2, 0xc000981438, 0x0, 0xc002f92738)
	pkg/sentry/platform/ptrace/subprocess.go:428 +0xc2
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).syscall(0xc000901080, 0xb, 0xc002f92648, 0x2, 0x2, 0x0, 0x0, 0x0)
	pkg/sentry/platform/ptrace/subprocess.go:562 +0xe8
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).Unmap(0xc000901080, 0x0, 0x7fffffff0000)
	pkg/sentry/platform/ptrace/subprocess.go:602 +0x22e
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).unmap(0xc000901080)
	pkg/sentry/platform/ptrace/subprocess.go:215 +0x40
gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).Release.func1(0xc000901080)
	pkg/sentry/platform/ptrace/subprocess.go:232 +0x2f
created by gvisor.googlesource.com/gvisor/pkg/sentry/platform/ptrace.(*subprocess).Release
	pkg/sentry/platform/ptrace/subprocess.go:231 +0x3f