| From: |
| Sebastian Andrzej Siewior <bigeasy-AT-linutronix.de> |
| To: |
| Thomas Gleixner <tglx-AT-linutronix.de> |
| Subject: |
| [ANNOUNCE] v4.14.28-rt23 |
| Date: |
| Wed, 21 Mar 2018 00:26:21 +0100 |
| Message-ID: |
| <20180320232620.jp4yglglk64jnztd@linutronix.de> |
| Cc: |
| LKML <linux-kernel-AT-vger.kernel.org>, linux-rt-users <linux-rt-users-AT-vger.kernel.org>, Steven Rostedt <rostedt-AT-goodmis.org> |
Dear RT folks!
I'm pleased to announce the v4.14.28-rt23 patch set.
Changes since v4.14.28-rt22:
- The RCU boosting code could enable interrupts too early which could
lead to a deadlock. Reported by Roosen Henri, fixed by Boqun Feng.
Known issues
- A warning triggered in "rcu_note_context_switch" originated from
SyS_timer_gettime(). The issue was always there, it is now
visible. Reported by Grygorii Strashko and Daniel Wagner.
The delta patch against v4.14.28-rt22 is appended below and can be found here:
https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.14/...
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v4.14.28-rt23
The RT patch against v4.14.28 can be found here:
https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.14/...
The split quilt queue is available at:
https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.14/...
Sebastian
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index 838c8a6f662c..0cb716ba3be0 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -2206,11 +2206,12 @@ void __sched rt_mutex_futex_unlock(struct rt_mutex *lock)
{
DEFINE_WAKE_Q(wake_q);
DEFINE_WAKE_Q(wake_sleeper_q);
+ unsigned long flags;
bool postunlock;
- raw_spin_lock_irq(&lock->wait_lock);
+ raw_spin_lock_irqsave(&lock->wait_lock, flags);
postunlock = __rt_mutex_futex_unlock(lock, &wake_q, &wake_sleeper_q);
- raw_spin_unlock_irq(&lock->wait_lock);
+ raw_spin_unlock_irqrestore(&lock->wait_lock, flags);
if (postunlock)
rt_mutex_postunlock(&wake_q, &wake_sleeper_q);
diff --git a/localversion-rt b/localversion-rt
index c29508d21914..9a218ca23053 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt22
+-rt23
