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Wen Yang 627b771be7 timekeeping: Prevent 32bit truncation in scale64_check_overflow() 
[ Upstream commit 4cbbc3a0eeed675449b1a4d080008927121f3da3 ]

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 13:14:36 +02:00
..
alarmtimer.c alarmtimer: Unregister wakeup source when module get fails 2020-02-11 04:33:59 -08:00
clockevents.c clockevents: Warn if cpu_all_mask is used as cpumask 2018-08-02 14:55:53 +02:00
clocksource.c clocksource: Prevent double add_timer_on() for watchdog_timer 2020-02-11 04:34:18 -08:00
hrtimer.c hrtimer: Annotate lockless access to timer->state 2020-01-04 19:13:32 +01:00
itimer.c pid: Implement PIDTYPE_TGID 2018-07-21 10:43:12 -05:00
jiffies.c
Kconfig sched/isolation: Eliminate NO_HZ_FULL_ALL 2018-02-15 15:40:37 -08:00
Makefile
ntp.c ntp: Limit TAI-UTC offset 2019-07-26 09:14:10 +02:00
ntp_internal.h timekeeping/ntp: Constify some function arguments 2018-07-19 17:08:05 -07:00
posix-clock.c ptp: fix the race between the release of ptp_clock and cdev 2020-01-04 19:13:35 +01:00
posix-cpu-timers.c posix-cpu-timers: Sanitize bogus WARNONS 2019-10-05 13:09:47 +02:00
posix-stubs.c posix-timers: Use new ktime_get_*_ts64() helpers 2018-06-19 09:56:27 +02:00
posix-timers.c posix-timers: Fix division by zero bug 2018-12-29 13:37:56 +01:00
posix-timers.h posix-timers: Make forward callback return s64 2018-07-02 11:33:25 +02:00
sched_clock.c timers/sched_clock: Prevent generic sched_clock wrap caused by tick_freeze() 2019-04-27 09:36:38 +02:00
test_udelay.c
tick-broadcast-hrtimer.c tick: broadcast-hrtimer: Fix a race in bc_set_next 2019-10-11 18:21:28 +02:00
tick-broadcast.c tick/broadcast: Use for_each_cpu() specially on UP kernels 2018-05-15 22:45:54 +02:00
tick-common.c timers/sched_clock: Prevent generic sched_clock wrap caused by tick_freeze() 2019-04-27 09:36:38 +02:00
tick-internal.h Revert: Unify CLOCK_MONOTONIC and CLOCK_BOOTTIME 2018-04-26 14:53:32 +02:00
tick-oneshot.c clockevents: Fix kernel messages split across multiple lines 2018-04-17 17:18:04 +02:00
tick-sched.c tick/sched: Annotate lockless access to last_jiffies_update 2020-01-23 08:21:37 +01:00
tick-sched.h nohz: Gather tick_sched booleans under a common flag field 2018-04-09 11:54:57 +02:00
time.c y2038: make do_gettimeofday() and get_seconds() inline 2019-11-20 18:45:24 +01:00
timeconst.bc
timeconv.c
timecounter.c
timekeeping.c timekeeping: Prevent 32bit truncation in scale64_check_overflow() 2020-10-01 13:14:36 +02:00
timekeeping.h timers/sched_clock: Prevent generic sched_clock wrap caused by tick_freeze() 2019-04-27 09:36:38 +02:00
timekeeping_debug.c timekeeping/ntp: Constify some function arguments 2018-07-19 17:08:05 -07:00
timekeeping_internal.h timekeeping/ntp: Constify some function arguments 2018-07-19 17:08:05 -07:00
timer.c random32: update the net random state on interrupt and activity 2020-08-07 09:36:20 +02:00
timer_list.c timer_list: Guard procfs specific code 2019-07-26 09:14:10 +02:00