g_cond_wait_until: returning FALSE immediately on mips24

0. GLib 2.70.4
1. OpenWRT 22.03
2. Compile my example code and run on the specified platform (I personally use 8devices Rambutan).
3. g_cond_wait_until should return FALSE only when specified time has passed
4. When called, the function does not wait for the specified interval, instead it just returns FALSE. Such behavior breaks GLib-dependent apps like GStreamer.

#include <gio/gio.h>
#include <stdlib.h>
#include <string.h>

gpointer
pop_data_timed (void)
{
	g_print ("start timer: %lld\n", g_get_monotonic_time ());
	gboolean current_data = false;
	gint64 end_time;
	gpointer data;

	GCond data_cond;
	GMutex data_mutex;

	g_cond_init(&data_cond);
	g_mutex_init(&data_mutex);

	g_mutex_lock (&data_mutex);

	end_time = g_get_monotonic_time () + 5 * G_TIME_SPAN_SECOND;
	g_print ("wait until: %lld\n", end_time);

	while (!current_data) {
		g_print ("while\n");
		if (!g_cond_wait_until (&data_cond, &data_mutex, end_time)) {
			g_print ("timeout: %lld\n", g_get_monotonic_time ());
			g_mutex_unlock (&data_mutex);
			return NULL;
		}
	}

	g_mutex_unlock (&data_mutex);

	return data;
}


int
main (int argc, char **argv)
{
	GApplication *app;
	int status;

	app = g_application_new ("org.gtk.TestApplication", G_APPLICATION_HANDLES_COMMAND_LINE);
	g_signal_connect (app, "command-line", G_CALLBACK (pop_data_timed), NULL);
	g_application_set_inactivity_timeout (app, 10000);

	status = g_application_run (app, argc, argv);

	g_object_unref (app);

	return status;
}