linux-kernel - [PATCH] sched: mark do_group

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Message-ID: <YO9VbRoMnaOgqGbu@localhost.localdomain>
Date:   Thu, 15 Jul 2021 00:21:49 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     akpm@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] sched: mark do_group_exit() as noreturn

do_group_exit() calls do_exit() which doesn't return.

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---

 include/linux/sched/task.h |    2 +-
 kernel/exit.c              |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -77,7 +77,7 @@ static inline void exit_thread(struct task_struct *tsk)
 {
 }
 #endif
-extern void do_group_exit(int);
+__noreturn void do_group_exit(int);
 
 extern void exit_files(struct task_struct *);
 extern void exit_itimers(struct signal_struct *);
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -895,8 +895,8 @@ SYSCALL_DEFINE1(exit, int, error_code)
  * Take down every thread in the group.  This is called by fatal signals
  * as well as by sys_exit_group (below).
  */
-void
-do_group_exit(int exit_code)
+__noreturn
+void do_group_exit(int exit_code)
 {
 	struct signal_struct *sig = current->signal;