From e294db7e539776a9b34e7addfab232f154309db2 Mon Sep 17 00:00:00 2001
From: Tomoki Shirasawa <tomoki.shirasawa.kk@hitachi-solutions.com>
Date: Tue, 26 Sep 2017 14:29:02 +0900
Subject: [PATCH] syscall: set syscall_return before calling
 ptrace_syscall_exit refs #944

---
 kernel/syscall.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/syscall.c b/kernel/syscall.c
index c6d9646f..3fb1af25 100644
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -10029,8 +10029,10 @@ long syscall(int num, ihk_mc_user_context_t *ctx)
 	}
 #endif /* POSTK_DEBUG_TEMP_FIX_60 && POSTK_DEBUG_TEMP_FIX_56 */
 
-	if (cpu_local_var(current)->proc->ptrace) {
+	if (cpu_local_var(current)->proc->ptrace && l != -ENOSYS) {
+		ihk_mc_syscall_ret(ctx) = l;
 		ptrace_syscall_exit(cpu_local_var(current));
+		l = ihk_mc_syscall_ret(ctx);
 	}
 
 #ifdef DISABLE_SCHED_YIELD