linux-kernel - [ANNOUNCE] v6.5.2-rt8

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Message-ID: <20230908154552.8TntDGz6@linutronix.de>
Date:   Fri, 8 Sep 2023 17:45:52 +0200
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        linux-rt-users@...r.kernel.org,
        Steven Rostedt <rostedt@...dmis.org>
Subject: [ANNOUNCE] v6.5.2-rt8

Dear RT folks!

I'm pleased to announce the v6.5.2-rt8 patch set. 

Changes since v6.5.2-rt7:

  - The locking patches for flushed queued I/O had a possible dead lock
    with write_lock(). Reported by Sultan Alsawaf.

Known issues
     None

The delta patch against v6.5.2-rt7 is appended below and can be found here:
 
     https://cdn.kernel.org/pub/linux/kernel/projects/rt/6.5/incr/patch-6.5.2-rt7-rt8.patch.xz

You can get this release via the git tree at:

    https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v6.5.2-rt8

The RT patch against v6.5.2 can be found here:

    https://cdn.kernel.org/pub/linux/kernel/projects/rt/6.5/older/patch-6.5.2-rt8.patch.xz

The split quilt queue is available at:

    https://cdn.kernel.org/pub/linux/kernel/projects/rt/6.5/older/patches-6.5.2-rt8.tar.xz

Sebastian

diff --git a/kernel/locking/rwbase_rt.c b/kernel/locking/rwbase_rt.c
index b5e881250fec5..34a59569db6be 100644
--- a/kernel/locking/rwbase_rt.c
+++ b/kernel/locking/rwbase_rt.c
@@ -241,7 +241,7 @@ static int __sched rwbase_write_lock(struct rwbase_rt *rwb,
 	/* Force readers into slow path */
 	atomic_sub(READER_BIAS, &rwb->readers);
 
-	rt_mutex_pre_schedule();
+	rwbase_pre_schedule();
 
 	raw_spin_lock_irqsave(&rtm->wait_lock, flags);
 	if (__rwbase_write_trylock(rwb))
@@ -254,7 +254,7 @@ static int __sched rwbase_write_lock(struct rwbase_rt *rwb,
 		if (rwbase_signal_pending_state(state, current)) {
 			rwbase_restore_current_state();
 			__rwbase_write_unlock(rwb, 0, flags);
-			rt_mutex_post_schedule();
+			rwbase_post_schedule();
 			trace_contention_end(rwb, -EINTR);
 			return -EINTR;
 		}
@@ -273,7 +273,7 @@ static int __sched rwbase_write_lock(struct rwbase_rt *rwb,
 
 out_unlock:
 	raw_spin_unlock_irqrestore(&rtm->wait_lock, flags);
-	rt_mutex_post_schedule();
+	rwbase_post_schedule();
 	return 0;
 }
 
diff --git a/localversion-rt b/localversion-rt
index 045478966e9f1..700c857efd9ba 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt7
+-rt8