ipc/msg: add missing annotation for freeque()

Sparse reports a warning at freeque() warning: context imbalance in freeque() - unexpected unlock The root cause is the missing annotation at freeque() Add the missing __releases(RCU) annotation Add the missing __releases(&msq->q_perm) annotation Signed-off-by: Jules Irenge <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Reviewed-by: Andrew Morton <[email protected]> Cc: Boqun Feng <[email protected]> Cc: Lu Shuaibing <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Manfred Spraul <[email protected]> Cc: Davidlohr Bueso <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Linus Torvalds <[email protected]>
torvalds · Jun 8, 2020 · 4b78e20 · 4b78e20
1 parent 92fb1db
commit 4b78e20
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/ipc/msg.c b/ipc/msg.c
@@ -268,6 +268,8 @@ static void expunge_all(struct msg_queue *msq, int res,
  * before freeque() is called. msg_ids.rwsem remains locked on exit.
  */
 static void freeque(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp)
+	__releases(RCU)
+	__releases(&msq->q_perm)
 {
 	struct msg_msg *msg, *t;
 	struct msg_queue *msq = container_of(ipcp, struct msg_queue, q_perm);