Thomas Gleixner 098b0e01a9 posix-cpu-timers: Make timespec to nsec conversion safe ...

The expiry time of a posix cpu timer is supplied through sys_timer_set()
via a struct timespec. The timespec is validated for correctness.

In the actual set timer implementation the timespec is converted to a
scalar nanoseconds value. If the tv_sec part of the time spec is large
enough the conversion to nanoseconds (sec * NSEC_PER_SEC) overflows 64bit.

Mitigate that by using the timespec_to_ktime() conversion function, which
checks the tv_sec part for a potential mult overflow and clamps the result
to KTIME_MAX, which is about 292 years. 

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/20170620154113.588276707@linutronix.de

2017-06-20 21:33:56 +02:00

..

alarmtimer.c

posix-timers: Make nanosleep timespec argument const

2017-06-14 00:00:47 +02:00

clockevents.c

clockevents: Make clockevents_config() static

2017-03-23 12:14:05 -07:00

clocksource.c

sched/clock, clocksource: Add optional cs::mark_unstable() method

2017-01-14 11:29:43 +01:00

hrtimer.c

posix-timers: Make nanosleep timespec argument const

2017-06-14 00:00:47 +02:00

itimer.c

itimer: Make timeval to nsec conversion range limited

2017-06-20 21:33:56 +02:00

jiffies.c

jiffies: Revert bogus conversion of NSEC_PER_SEC to TICK_NSEC

2017-03-07 11:03:28 +01:00

Kconfig

rcu: Drop RCU_USER_QS in favor of NO_HZ_FULL

2015-07-06 13:52:18 -07:00

Makefile

time: Remove CONFIG_TIMER_STATS

2017-02-10 11:15:08 +01:00

ntp_internal.h

ntp: Fix second_overflow's input parameter type to be 64bits

2015-12-16 16:50:56 -08:00

ntp.c

ktime: Get rid of the union

2016-12-25 17:21:22 +01:00

posix-clock.c

posix-timers: Move posix-timer internals to core

2017-06-04 15:40:23 +02:00

posix-cpu-timers.c

posix-cpu-timers: Make timespec to nsec conversion safe

2017-06-20 21:33:56 +02:00

posix-stubs.c

posix-timers: Move compat_timer_create() to native, get rid of set_fs()

2017-06-14 00:00:45 +02:00

posix-timers.c

posix-timers: Make nanosleep timespec argument const

2017-06-14 00:00:47 +02:00

posix-timers.h

posix-timers: Make nanosleep timespec argument const

2017-06-14 00:00:47 +02:00

sched_clock.c

timers, sched_clock: Update timeout for clock wrap

2017-03-23 12:30:27 -07:00

test_udelay.c

time: Avoid timespec in udelay_test

2016-06-20 12:47:26 -07:00

tick-broadcast-hrtimer.c

ktime: Get rid of the union

2016-12-25 17:21:22 +01:00

tick-broadcast.c

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-02-20 10:06:32 -08:00

tick-common.c

ktime: Cleanup ktime_set() usage

2016-12-25 17:21:22 +01:00

tick-internal.h

timers: Forward the wheel clock whenever possible

2016-07-07 10:35:11 +02:00

tick-oneshot.c

ktime: Get rid of the union

2016-12-25 17:21:22 +01:00

tick-sched.c

cpufreq: schedutil: Avoid reducing frequency of busy CPUs prematurely

2017-03-23 02:12:14 +01:00

tick-sched.h

Revert "nohz: Fix collision between tick and other hrtimers"

2017-02-16 12:19:18 -08:00

time.c

time: Move compat_gettimeofday()/settimeofday() to native

2017-06-14 00:00:46 +02:00

timeconst.bc

time: Introduce jiffies64_to_nsecs()

2017-02-01 09:13:45 +01:00

timeconv.c

time: Add time64_to_tm()

2016-06-20 12:47:15 -07:00

timecounter.c

clocksource: Use a plain u64 instead of cycle_t

2016-12-25 11:04:12 +01:00

timekeeping_debug.c

timekeeping: Use deferred printk() in debug code

2017-02-15 11:46:08 +01:00

timekeeping_internal.h

clocksource: Use a plain u64 instead of cycle_t

2016-12-25 11:04:12 +01:00

timekeeping.c

timekeeping: Remove pointless conversion to bool

2017-03-31 10:26:56 +02:00

timekeeping.h

timekeeping: Remove unused timekeeping_{get,set}_tai_offset()

2017-01-06 16:47:28 -08:00

timer_list.c

sysrq: Reset the watchdog timers while displaying high-resolution timers

2017-03-23 12:46:53 -07:00

timer.c

timers: Fix parameter description of try_to_del_timer_sync()

2017-06-20 21:33:55 +02:00