Mark Rutland 66fe4de752 clockevents: Don't allow dummy broadcast timers ...

commit a7dc19b865 upstream.

Currently tick_check_broadcast_device doesn't reject clock_event_devices
with CLOCK_EVT_FEAT_DUMMY, and may select them in preference to real
hardware if they have a higher rating value. In this situation, the
dummy timer is responsible for broadcasting to itself, and the core
clockevents code may attempt to call non-existent callbacks for
programming the dummy, eventually leading to a panic.

This patch makes tick_check_broadcast_device always reject dummy timers,
preventing this problem.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Jon Medhurst (Tixy) <tixy@linaro.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-03-28 12:18:01 -07:00

..

alarmtimer.c

alarmtimer: Rename alarmtimer_remove to alarmtimer_dequeue

2012-09-24 12:38:03 -04:00

clockevents.c

timekeeping: Add suspend and resume of clock event devices

2012-09-04 01:36:01 +02:00

clocksource.c

kernel-time: fix s/then/than/ spelling errors

2012-03-23 16:49:21 -07:00

jiffies.c

time: Kill xtime_lock, replacing it with jiffies_lock

2012-11-13 14:08:23 -05:00

Kconfig

time: Introduce new GENERIC_TIME_VSYSCALL

2012-09-24 12:38:08 -04:00

Makefile

time: remove the timecompare code.

2012-11-01 11:41:35 -04:00

ntp.c

time/jiffies: Rename ACTHZ to SHIFTED_HZ

2012-07-31 17:09:12 +02:00

posix-clock.c

kernel: Fix files explicitly needing EXPORT_SYMBOL infrastructure

2011-10-31 19:30:05 -04:00

tick-broadcast.c

clockevents: Don't allow dummy broadcast timers

2013-03-28 12:18:01 -07:00

tick-common.c

time: Kill xtime_lock, replacing it with jiffies_lock

2012-11-13 14:08:23 -05:00

tick-internal.h

time: Kill xtime_lock, replacing it with jiffies_lock

2012-11-13 14:08:23 -05:00

tick-oneshot.c

clockevents: Make minimum delay adjustments configurable

2011-09-08 11:10:56 +02:00

tick-sched.c

nohz: Make tick_nohz_irq_exit() irq safe

2013-03-14 11:26:22 -07:00

timeconv.c

time: add function to convert between calendar time and broken-down time for universal use

2009-09-24 07:20:56 -07:00

timekeeping.c

Merge tag 'kvm-3.8-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2012-12-13 15:31:08 -08:00

timer_list.c

nohz: Rename ts->idle_tick to ts->last_tick

2012-06-11 20:07:17 +02:00

timer_stats.c

locking, timer_stats: Annotate table_lock as raw

2011-09-13 11:12:00 +02:00