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linux/drivers/clocksource
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Maxime Ripard 8fb2face1b clockevent: sun4i: Fix race condition in the probe code 
commit 6bab4a8a18 upstream.

The interrupts were activated and the handler registered before the clockevent
was registered in the probe function.

The interrupt handler, however, was making the assumption that the clockevent
device was registered.

That could cause a null pointer dereference if the timer interrupt was firing
during this narrow window.

Fix that by moving the clockevent registration before the interrupt is enabled.

Reported-by: Roman Byshko <rbyshko@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2014-12-01 10:26:04 +00:00
..
acpi_pm.c treewide: Fix printks with 0x%# 2013-08-27 10:49:38 +02:00
arm_arch_timer.c clocksource: arch_arm_timer: Fix age-old arch timer C3STOP detection issue 2014-04-29 15:06:36 +02:00
arm_global_timer.c clocksource: arm_global_timer: Only check for unusable timer on A9 2014-04-22 11:44:24 +02:00
bcm2835_timer.c clocksource: bcm2835: Switch to sched_clock_register() 2013-07-30 11:24:51 -07:00
bcm_kona_timer.c clocksource: Kona: Print warning rather than panic 2014-02-06 16:01:40 +01:00
cadence_ttc_timer.c clocksource: cadence_ttc: Use readl/writel_relaxed instead of __raw 2014-05-20 16:16:05 +02:00
clksrc-dbx500-prcmu.c clocksource: dbx500-prcmu: Switch to sched_clock_register() 2013-07-30 11:24:52 -07:00
clksrc-of.c of: consolidate linker section OF match table declarations 2014-05-20 14:25:24 -05:00
cs5535-clockevt.c clocksource: misc drivers: Remove deprecated IRQF_DISABLED 2013-12-11 11:40:27 +01:00
dummy_timer.c clocksource, dummy-timer: Fix CPU hotplug callback registration 2014-03-20 13:43:45 +01:00
dw_apb_timer.c clocksource: misc drivers: Remove deprecated IRQF_DISABLED 2013-12-11 11:40:27 +01:00
dw_apb_timer_of.c clocksource: dw_apb_timer_of: Do not trace read_sched_clock 2014-05-23 09:23:09 +02:00
em_sti.c clocksource: em_sti: Remove unnecessary OOM messages 2014-05-23 09:23:10 +02:00
exynos_mct.c clocksource: exynos_mct: Register the timer for stable udelay 2014-07-05 06:40:23 +09:00
fsl_ftm_timer.c clocksource: Add Freescale FlexTimer Module (FTM) timer support 2014-05-23 10:12:04 +02:00
i8253.c time: Kill xtime_lock, replacing it with jiffies_lock 2012-11-13 14:08:23 -05:00
Kconfig Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-04 15:57:20 -07:00
Makefile Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-04 15:57:20 -07:00
metag_generic.c clocksource+irqchip: delete __cpuinit usage from all related files 2013-07-14 19:36:57 -04:00
mmio.c clocksource: Fix clocksource_mmio_readX_down 2014-05-23 09:19:40 +02:00
moxart_timer.c ARM: clocksource: moxart: Add bitops.h include 2013-08-01 01:13:34 +02:00
mxs_timer.c clocksource: mxs_timer: Switch to sched_clock_register() 2013-07-30 11:24:52 -07:00
nomadik-mtu.c ARM: SoC DT updates for 3.14 2014-01-23 18:45:38 -08:00
qcom-timer.c clocksource: qcom: Implement read_current_timer for udelay 2014-05-19 11:30:11 +02:00
samsung_pwm_timer.c clocksource: misc drivers: Remove deprecated IRQF_DISABLED 2013-12-11 11:40:27 +01:00
scx200_hrt.c clocksource: scx200_hrt: Fix the build 2012-02-22 13:25:16 +01:00
sh_cmt.c clocksource: sh_cmt: Remove unnecessary OOM messages 2014-05-23 09:23:10 +02:00
sh_mtu2.c clocksource: sh_mtu2: Remove unnecessary OOM messages 2014-05-23 09:23:11 +02:00
sh_tmu.c Merge branch 'clockevents/cmt-mtu2-tmu-cleanups' into clockevents/3.16 2014-05-23 09:23:21 +02:00
sun4i_timer.c clockevent: sun4i: Fix race condition in the probe code 2014-12-01 10:26:04 +00:00
tcb_clksrc.c clocksource: tcb_clksrc: Make tc_mode interrupt safe 2014-05-22 18:54:58 +02:00
tegra20_timer.c clocksource: tegra: Remove deprecated IRQF_DISABLED 2013-12-11 11:40:28 +01:00
time-armada-370-xp.c clocksource: armada-370-xp: Use atomic access for shared registers 2014-03-11 23:05:05 +01:00
time-efm32.c clocksource: efm32: use $vendor,$device scheme for compatible string 2014-04-22 11:44:28 +02:00
time-orion.c clocksource: orion: Use atomic access for shared registers 2014-03-11 23:05:02 +01:00
timer-keystone.c clocksource: timer-keystone: Delete unnecessary variable 2014-03-11 23:05:00 +01:00
timer-marco.c ARM: SoC cleanups for 3.16 2014-06-02 16:14:07 -07:00
timer-prima2.c clocksource:sirf: remove the hardcode for the clk of timers 2014-05-12 21:43:49 +08:00
timer-sun5i.c clocksource: sun5i: Add support for reset controller 2014-04-22 13:56:50 +02:00
timer-u300.c Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm 2014-04-05 13:20:43 -07:00
versatile.c clocksource: versatile: Use sched_clock_register() 2014-06-04 07:46:10 -07:00
vf_pit_timer.c clocksource: vf_pit_timer: use complement for sched_clock reading 2014-03-06 11:34:14 +01:00
vt8500_timer.c clocksource: vt8500: Remove deprecated IRQF_DISABLED 2013-12-11 11:40:28 +01:00
zevio-timer.c clocksource: nspire: Fix compiler warning 2014-04-29 15:06:43 +02:00