linux-kernel - [PATCH linux-next] kernel/exit: fix mismatch in function argument types

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Date:   Sun, 22 Jul 2018 13:17:36 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <mingo@...hat.com>, <tglx@...utronix.de>
CC:     <hpa@...or.com>, <x86@...nel.org>, <linux-kernel@...r.kernel.org>,
        <gregkh@...uxfoundation.org>
Subject: [PATCH linux-next] kernel/exit: fix mismatch in function argument types

Fix following warning:

kernel/exit.c:1634:6: error: symbol 'kernel_wait4' redeclared with different type (originally declared at ./include/linux/sched/task.h:78)
- incompatible argument 2 (different address spaces)

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 include/linux/sched/task.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index 5be31eb..108ede9 100644
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -75,7 +75,7 @@ static inline void exit_thread(struct task_struct *tsk)
 extern long do_fork(unsigned long, unsigned long, unsigned long, int __user *, int __user *);
 struct task_struct *fork_idle(int);
 extern pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
-extern long kernel_wait4(pid_t, int *, int, struct rusage *);
+extern long kernel_wait4(pid_t, int __user *, int, struct rusage *);
 
 extern void free_task(struct task_struct *tsk);
 
-- 
1.7.12.4