From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761731AbcLRNyg (ORCPT ); Sun, 18 Dec 2016 08:54:36 -0500 Received: from Galois.linutronix.de ([146.0.238.70]:51773 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751769AbcLRNyf (ORCPT ); Sun, 18 Dec 2016 08:54:35 -0500 Date: Sun, 18 Dec 2016 14:51:43 +0100 (CET) From: Thomas Gleixner To: Linus Torvalds cc: LKML , Andrew Morton , Ingo Molnar , "H. Peter Anvin" Subject: [GIT pull] timer fix for 4.10 Message-ID: User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus, please pull the latest timers-urgent-for-linus git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-for-linus Prevent NULL pointer dereferencing in the tick broadcast code. Old bug, which got unearthed by the hotplug ordering problem. Thanks, tglx ------------------> Thomas Gleixner (1): tick/broadcast: Prevent NULL pointer dereference kernel/time/tick-broadcast.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index f6aae7977824..d2a20e83ebae 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -871,6 +871,9 @@ void tick_broadcast_setup_oneshot(struct clock_event_device *bc) { int cpu = smp_processor_id(); + if (!bc) + return; + /* Set it up only once ! */ if (bc->event_handler != tick_handle_oneshot_broadcast) { int was_periodic = clockevent_state_periodic(bc);