Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Jules Irenge <jbi.octave@gmail.com>
To:     boqun.feng@gmail.com
Cc:     dvhart@infradead.org, peterz@infradead.org, mingo@redhat.com,
        tglx@linutronix.de, linux-kernel@vger.kernel.org,
        Jules Irenge <jbi.octave@gmail.com>
Subject: [PATCH 02/11] futex: Add missing annotation for wake_futex_pi()
Date:   Sun,  9 Feb 2020 22:29:25 +0000
Message-Id: <0cfbbe1031005c37bf478c5a59d33cc83ef9a4a6.1581282103.git.jbi.octave@gmail.com>
In-Reply-To: <cover.1581282103.git.jbi.octave@gmail.com>
References: <0/11> <cover.1581282103.git.jbi.octave@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Sparse reports a warning at wake_futex_pi()

warning: context imbalance in wake_futex_pi() - unexpected unlock

The root cause is amissing annotation of wake_futex_pi().

Add the missing __releases(&pi_state->pi_mutex.wait_lock) annotation

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
---
 kernel/futex.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/futex.c b/kernel/futex.c
index 0cf84c8664f2..93e7510a5b36 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1550,6 +1550,7 @@ static void mark_wake_futex(struct wake_q_head *wake_q, struct futex_q *q)
  * Caller must hold a reference on @pi_state.
  */
 static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_pi_state *pi_state)
+	__releases(&pi_state->pi_mutex.wait_lock)
 {
 	u32 uninitialized_var(curval), newval;
 	struct task_struct *new_owner;
-- 
2.24.1