From 4b78e2013a374f379457ceba7dc860d9fc28156b Mon Sep 17 00:00:00 2001
From: Jules Irenge <jbi.octave@gmail.com>
Date: Sun, 7 Jun 2020 21:40:07 -0700
Subject: 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 <jbi.octave@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Lu Shuaibing <shuaibinglu@126.com>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Link: http://lkml.kernel.org/r/20200403160505.2832-2-jbi.octave@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 ipc/msg.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'ipc')

diff --git a/ipc/msg.c b/ipc/msg.c
index caca67368cb5..acd1bc7af55a 100644
--- 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);
-- 
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