patch-2.2.0-pre9 linux/arch/m68k/kernel/ptrace.c

• Lines: 19
• Date: Tue Jan 19 10:58:34 1999
• Orig file: v2.2.0-pre8/linux/arch/m68k/kernel/ptrace.c
• Orig date: Thu Jan 7 15:11:36 1999

diff -u --recursive --new-file v2.2.0-pre8/linux/arch/m68k/kernel/ptrace.c linux/arch/m68k/kernel/ptrace.c
@@ -325,12 +325,15 @@
 		ret = 0;
 		goto out;
 	}
-	if (pid == 1)		/* you may not mess with init */
-		goto out;
 	ret = -ESRCH;
-	if (!(child = find_task_by_pid(pid)))
+	read_lock(&tasklist_lock);
+	child = find_task_by_pid(pid);
+	read_unlock(&tasklist_lock);	/* FIXME!!! */
+	if (!child)
 		goto out;
 	ret = -EPERM;
+	if (pid == 1)		/* you may not mess with init */
+		goto out;
 	if (request == PTRACE_ATTACH) {
 		if (child == current)
 			goto out;