{44, "EL2HLT", "level 2 halted"},
	{45, "EDEADLK", "resource deadlock avoided"},
	{46, "ENOLCK", "no locks available"},
	{50, "EBADE", "invalid exchange"},
	{51, "EBADR", "invalid request descriptor"},
	{52, "EXFULL", "exchange full"},
	{53, "ENOANO", "no anode"},
	{54, "EBADRQC", "invalid request code"},
	{55, "EBADSLT", "invalid slot"},
	{56, "EDEADLOCK", "file locking deadlock error"},
	{59, "EBFONT", "bad font file format"},

	{44, "EL2HLT", "level 2 halted"},
	{45, "EDEADLK", "resource deadlock avoided"},
	{46, "ENOLCK", "no locks available"},
	{50, "EBADE", "invalid exchange"},
	{51, "EBADR", "invalid request descriptor"},
	{52, "EXFULL", "exchange full"},
	{53, "ENOANO", "no anode"},
	{54, "EBADRQC", "invalid request code"},
	{55, "EBADSLT", "invalid slot"},
	{56, "EDEADLOCK", "file locking deadlock error"},
	{59, "EBFONT", "bad font file format"},

		return "", err
	}

	// Limit the number of frames we request.
	pcs = pcs[:min(len(pcs), 16)]

	if len(pcs) == 0 {
		// This can occur if all goroutines are idle, as when
		// caught in a deadlock, or killed by an async signal
		// while blocked.
		//
		// TODO(adonovan): consider how to report such
		// situations. Reporting a goroutine in [sleep] or
		// [select] state could be quite confusing without

The reader thread must never run application-layer code. Otherwise one slow stream can hold up the entire connection.

//
//go:systemstack
func stackalloc(n uint32) stack {
	// Stackalloc must be called on scheduler stack, so that we
	// never try to grow the stack during the code that stackalloc runs.
	// Doing so would cause a deadlock (issue 1547).
	thisg := getg()
	if thisg != thisg.m.g0 {
		throw("stackalloc not on scheduler stack")
	}
	if n&(n-1) != 0 {
		throw("stack size not a power of 2")
	}
	if stackDebug >= 1 {

    reason: UnregisterNetDevice
    status: "False"
    type: FrequentUnregisterNetDevice
  - lastHeartbeatTime: "2019-09-20T19:32:08Z"
    lastTransitionTime: "2019-07-09T16:17:04Z"
    message: kernel has no deadlock
    reason: KernelHasNoDeadlock
    status: "False"
    type: KernelDeadlock
  - lastHeartbeatTime: "2019-09-20T19:32:08Z"
    lastTransitionTime: "2019-07-09T16:17:04Z"
    message: Filesystem is not read-only

	// lock protects all fields in hchan, as well as several
	// fields in sudogs blocked on this channel.
	//
	// Do not change another G's status while holding this lock
	// (in particular, do not ready a G), as this can deadlock
	// with stack shrinking.
	lock mutex
}

type waitq struct {
	first *sudog
	last  *sudog
}

//go:linkname reflect_makechan reflect.makechan
func reflect_makechan(t *chantype, size int) *hchan {

	// will exit before the parallel children are executed. It should be noted that if the parent test is prevented
	// from exiting (e.g. parent test is waiting for something to occur within the child test), the test will
	// deadlock.
	//
	// Example:
	//
	// func TestParallel(t *testing.T) {
	//     framework.NewTest(t).
	//         Run(func(ctx framework.TestContext) {
	//             ctx.NewSubTest("T1").

	{74, "ENOSR", "out of streams resources"},
	{75, "ENOMSG", "no message of desired type"},
	{76, "EBADMSG", "bad message"},
	{77, "EIDRM", "identifier removed"},
	{78, "EDEADLK", "resource deadlock avoided"},
	{79, "ENOLCK", "no locks available"},
	{80, "ENONET", "machine is not on the network"},
	{81, "ERREMOTE", "unknown error 81"},
	{82, "ENOLINK", "link has been severed"},
	{83, "EADV", "advertise error"},

	{31, "EMLINK", "too many links"},
	{32, "EPIPE", "broken pipe"},
	{33, "EDOM", "numerical argument out of domain"},
	{34, "ERANGE", "numerical result out of range"},
	{35, "EDEADLK", "resource deadlock avoided"},
	{36, "ENAMETOOLONG", "file name too long"},
	{37, "ENOLCK", "no locks available"},
	{38, "ENOSYS", "function not implemented"},
	{39, "ENOTEMPTY", "directory not empty"},