Wen Yang efc95f2ef7 timekeeping: Prevent 32bit truncation in scale64_check_overflow() ...

[ Upstream commit 4cbbc3a0ee ]

While unlikely the divisor in scale64_check_overflow() could be >= 32bit in
scale64_check_overflow(). do_div() truncates the divisor to 32bit at least
on 32bit platforms.

Use div64_u64() instead to avoid the truncation to 32-bit.

[ tglx: Massaged changelog ]

Signed-off-by: Wen Yang <wenyang@linux.alibaba.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200120100523.45656-1-wenyang@linux.alibaba.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-10-01 13:17:38 +02:00

..

alarmtimer.c

alarmtimer: Make alarmtimer platform device child of RTC device

2020-02-24 08:36:57 +01:00

clockevents.c

…

clocksource.c

clocksource: Prevent double add_timer_on() for watchdog_timer

2020-02-11 04:35:54 -08:00

hrtimer.c

hrtimer: Annotate lockless access to timer->state

2020-01-04 19:18:41 +01:00

itimer.c

posix-cpu-timers: Switch thread group sampling to array

2019-08-28 11:50:39 +02:00

jiffies.c

…

Kconfig

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00

Makefile

timekeeping: Provide a generic update_vsyscall() implementation

2019-06-22 21:21:06 +02:00

ntp_internal.h

…

ntp.c

ntp/y2038: Remove incorrect time_t truncation

2019-11-12 08:13:44 +01:00

posix-clock.c

ptp: fix the race between the release of ptp_clock and cdev

2020-01-04 19:18:48 +01:00

posix-cpu-timers.c

posix-cpu-timers: Fix two trivial comments

2019-10-23 14:48:24 +02:00

posix-stubs.c

…

posix-timers.c

hrtimer: Improve comments on handling priority inversion against softirq kthread

2019-08-20 22:05:46 +02:00

posix-timers.h

posix-timers: Use a callback for cancel synchronization on PREEMPT_RT

2019-08-20 22:05:46 +02:00

sched_clock.c

time/sched_clock: Expire timer in hardirq context

2020-04-17 10:50:02 +02:00

test_udelay.c

…

tick-broadcast-hrtimer.c

tick: broadcast-hrtimer: Fix a race in bc_set_next

2019-09-27 14:45:55 +02:00

tick-broadcast.c

…

tick-common.c

…

tick-internal.h

…

tick-oneshot.c

…

tick-sched.c

tick/sched: Annotate lockless access to last_jiffies_update

2020-01-23 08:22:55 +01:00

tick-sched.h

…

time.c

time: Zero the upper 32-bits in __kernel_timespec on 32-bit

2019-12-13 08:42:18 +01:00

timeconst.bc

…

timeconv.c

…

timecounter.c

…

timekeeping_debug.c

…

timekeeping_internal.h

…

timekeeping.c

timekeeping: Prevent 32bit truncation in scale64_check_overflow()

2020-10-01 13:17:38 +02:00

timekeeping.h

…

timer_list.c

timer_list: Guard procfs specific code

2019-06-23 00:08:52 +02:00

timer.c

random32: update the net random state on interrupt and activity

2020-08-07 09:34:01 +02:00

vsyscall.c

lib/vdso: Update coarse timekeeper unconditionally

2020-03-05 16:43:49 +01:00