From f28eb0a672a42ac6679c3d2da1104e6c8b18dbd6 Mon Sep 17 00:00:00 2001
From: Masamichi Takagi <masamichi.takagi@riken.jp>
Date: Tue, 30 Sep 2014 15:59:38 +0900
Subject: [PATCH] Fix taking exit status when wait4()-ing stopped

---
 kernel/syscall.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/syscall.c b/kernel/syscall.c
index 7bbc9b59..e4f49f77 100644
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -327,9 +327,9 @@ static int wait_stopped(struct process *proc, struct fork_tree_node *child, int
 	int ret;
 
 	/* Copy exit_status created in do_signal */
-	int *exit_status = (child->ptrace & PT_TRACED) ? 
-		&child->exit_status : 
-		&child->group_exit_status;
+	int *exit_status = child->status == PS_STOPPED ? 
+		&child->group_exit_status :
+		&child->exit_status;
 
 	/* Skip this process because exit_status has been reaped. */
 	if (!*exit_status) {