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From: Thomas Gleixner <tglx@linutronix.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>
Subject: [GIT pull] irq fix for 4.14
Date: Sun, 17 Sep 2017 11:31:21 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.20.1709171130140.2105@nanos> (raw)

Linus,

please pull the latest irq-urgent-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq-urgent-for-linus

Fix for an off by one error in a cpumask result comparison.

Thanks,

	tglx

------------------>
Thomas Gleixner (1):
      genirq: Fix cpumask check in __irq_startup_managed()


 kernel/irq/chip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index f51b7b6d2451..6fc89fd93824 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -202,7 +202,7 @@ __irq_startup_managed(struct irq_desc *desc, struct cpumask *aff, bool force)
 
 	irqd_clr_managed_shutdown(d);
 
-	if (cpumask_any_and(aff, cpu_online_mask) > nr_cpu_ids) {
+	if (cpumask_any_and(aff, cpu_online_mask) >= nr_cpu_ids) {
 		/*
 		 * Catch code which fiddles with enable_irq() on a managed
 		 * and potentially shutdown IRQ. Chained interrupt

                 reply	other threads:[~2017-09-17  9:31 UTC|newest]

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