--- arch/um/kernel/tt/tracer.c.sav	2005-04-14 15:02:50.000000000 +1200
+++ arch/um/kernel/tt/tracer.c	2005-04-14 15:45:13.151868552 +1200
@@ -68,14 +68,17 @@
 
 void attach_process(int pid)
 {
-	if((ptrace(PTRACE_ATTACH, pid, 0, 0) < 0) ||
-	   (ptrace(PTRACE_CONT, pid, 0, 0) < 0))
-		tracer_panic("OP_FORK failed to attach pid");
+	int err;
+
+	if (!(err = ptrace(PTRACE_ATTACH, pid, 0, 0)))
+		tracer_panic("OP_FORK: PTRACE_ATTACH failed, pid = %d, err = %d\n", pid, -err);
+	if (!(err = ptrace(PTRACE_CONT, pid, 0, 0)))
+		tracer_panic("OP_FORK: PTRACE_CONT failed, pid = %d, err = %d\n", pid, -err);
 	wait_for_stop(pid, SIGSTOP, PTRACE_CONT, NULL);
-	if (ptrace(PTRACE_OLDSETOPTIONS, pid, 0, (void *)PTRACE_O_TRACESYSGOOD) < 0)
-		tracer_panic("OP_FORK: PTRACE_SETOPTIONS failed, errno = %d", errno);
-	if(ptrace(PTRACE_CONT, pid, 0, 0) < 0)
-		tracer_panic("OP_FORK failed to continue process");
+	if (!(err = ptrace(PTRACE_OLDSETOPTIONS, pid, 0, (void *)PTRACE_O_TRACESYSGOOD)))
+		tracer_panic("OP_FORK: PTRACE_SETOPTIONS failed, pid = %d, err = %d\n", pid, -err);
+	if (!(err = ptrace(PTRACE_CONT, pid, 0, 0)))
+		tracer_panic("OP_FORK: PTRACE_CONT (2) failed, pid = %d, err = %d\n", pid, -err);
 }
 
 void tracer_panic(char *format, ...)