workround coldfire sighander bug, heisenberg effect?

target/linux/patches/4.4.8/coldfire-debug.patch

@@ -0,0 +1,11 @@
+diff -Nur linux-4.4.8.orig/arch/m68k/kernel/signal.c linux-4.4.8/arch/m68k/kernel/signal.c
+--- linux-4.4.8.orig/arch/m68k/kernel/signal.c	2016-04-20 08:44:02.000000000 +0200
++++ linux-4.4.8/arch/m68k/kernel/signal.c	2016-05-08 13:32:39.067883350 +0200
+@@ -595,6 +595,7 @@
+ 			       void __user *fp)
+ {
+ 	int fsize = frame_extra_sizes(formatvec >> 12);
++	printk("debug: coldfire sighandler broken?..\n");
+ 	if (fsize < 0) {
+ 		/*
+ 		 * user process trying to return with weird frame format