[PATCH 3/5] kernel/sched: improve the BUILD_BUG_ON() in get_task_comm()

[Yafang Shao]

What we really want to guarantee is that the buf size can't be less than
TASK_COMM_LEN. While the size be greater than TASK_COMM_LEN is
acceptable.

Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx>
---
 include/linux/sched.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index b387b5943db4..959eaef248fc 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1931,7 +1931,7 @@ static inline void set_task_comm(struct task_struct *tsk, const char *from)
 
 extern char *__get_task_comm(char *to, size_t len, struct task_struct *tsk);
 #define get_task_comm(buf, tsk) ({			\
-	BUILD_BUG_ON(sizeof(buf) != TASK_COMM_LEN);	\
+	BUILD_BUG_ON(sizeof(buf) < TASK_COMM_LEN);	\
 	__get_task_comm(buf, sizeof(buf), tsk);		\
 })
 
-- 
2.17.1