This is a note to let you know that I've just added the patch titled
timers: Unconditionally check deferrable base
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: timers-unconditionally-check-deferrable-base.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From ed4bbf7910b28ce3c691aef28d245585eaabda06 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner tglx@linutronix.de Date: Sun, 14 Jan 2018 23:19:49 +0100 Subject: timers: Unconditionally check deferrable base
From: Thomas Gleixner tglx@linutronix.de
commit ed4bbf7910b28ce3c691aef28d245585eaabda06 upstream.
When the timer base is checked for expired timers then the deferrable base must be checked as well. This was missed when making the deferrable base independent of base::nohz_active.
Fixes: ced6d5c11d3e ("timers: Use deferrable base independent of base::nohz_active") Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: Anna-Maria Gleixner anna-maria@linutronix.de Cc: Frederic Weisbecker fweisbec@gmail.com Cc: Peter Zijlstra peterz@infradead.org Cc: Sebastian Siewior bigeasy@linutronix.de Cc: Paul McKenney paulmck@linux.vnet.ibm.com Cc: rt@linutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- kernel/time/timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1696,7 +1696,7 @@ void run_local_timers(void) hrtimer_run_queues(); /* Raise the softirq only if required. */ if (time_before(jiffies, base->clk)) { - if (!IS_ENABLED(CONFIG_NO_HZ_COMMON) || !base->nohz_active) + if (!IS_ENABLED(CONFIG_NO_HZ_COMMON)) return; /* CPU is awake, so check the deferrable base. */ base++;
Patches currently in stable-queue which might be from tglx@linutronix.de are
queue-4.9/futex-prevent-overflow-by-strengthen-input-validation.patch queue-4.9/timers-unconditionally-check-deferrable-base.patch