linux/kernel
Wen Yang 627b771be7 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 13:14:36 +02:00
..
bpf bpf: Remove recursion prevention from rcu free callback 2020-10-01 13:14:34 +02:00
cgroup cgroup: add missing skcd->no_refcnt check in cgroup_sk_clone() 2020-08-19 08:14:47 +02:00
configs
debug kgdb: Avoid suspicious RCU usage warning 2020-07-09 09:37:10 +02:00
dma
events uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to fix GDB regression 2020-07-29 10:16:47 +02:00
gcov gcov: add support for GCC 10.1 2020-09-17 13:45:31 +02:00
irq genirq/matrix: Deal with the sillyness of for_each_cpu() on UP 2020-09-03 11:24:29 +02:00
livepatch
locking locking/lockdep: Fix overflow in presentation of average lock-time 2020-09-03 11:24:21 +02:00
power PM: hibernate: Freeze kernel threads in software_resume() 2020-05-06 08:13:28 +02:00
printk printk: queue wake_up_klogd irq_work only if per-CPU areas are ready 2020-07-22 09:32:13 +02:00
rcu
sched sched: correct SD_flags returned by tl->sd_flags() 2020-08-19 08:14:47 +02:00
time timekeeping: Prevent 32bit truncation in scale64_check_overflow() 2020-10-01 13:14:36 +02:00
trace tracing: Set kernel_stack's caller size properly 2020-10-01 13:14:31 +02:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c audit: CONFIG_CHANGE don't log internal bookkeeping as an event 2020-10-01 13:14:33 +02:00
audit.c audit: fix a net reference leak in audit_list_rules_send() 2020-06-22 09:05:13 +02:00
audit.h audit: fix a net reference leak in audit_list_rules_send() 2020-06-22 09:05:13 +02:00
auditfilter.c audit: fix a net reference leak in audit_list_rules_send() 2020-06-22 09:05:13 +02:00
auditsc.c
backtracetest.c
bounds.c
capability.c
compat.c make 'user_access_begin()' do 'access_ok()' 2020-06-22 09:04:58 +02:00
configs.c
context_tracking.c
cpu_pm.c kernel/cpu_pm: Fix uninitted local in cpu_pm 2020-06-22 09:05:28 +02:00
cpu.c sched/core: Fix illegal RCU from offline CPUs 2020-06-22 09:05:14 +02:00
crash_core.c
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c exit: Move preemption fixup up, move blocking operations down 2020-06-22 09:05:14 +02:00
extable.c
fail_function.c
fork.c
freezer.c
futex.c
groups.c
hung_task.c
iomem.c
irq_work.c
jump_label.c
kallsyms.c kallsyms: Refactor kallsyms_show_value() to take cred 2020-07-16 08:17:26 +02:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec_core.c
kexec_file.c
kexec_internal.h
kexec.c
kmod.c
kprobes.c kprobes: fix kill kprobe which has been marked as gone 2020-09-26 18:01:28 +02:00
ksysfs.c
kthread.c kthread: Do not preempt current task if it is going to call schedule() 2020-08-26 10:31:00 +02:00
latencytop.c
Makefile
memremap.c
module_signing.c
module-internal.h
module.c module: Correctly truncate sysfs sections output 2020-08-21 11:05:34 +02:00
notifier.c
nsproxy.c
padata.c padata: purge get_cpu and reorder_via_wq from padata_do_serial 2020-05-27 17:37:36 +02:00
panic.c
params.c
pid_namespace.c
pid.c
profile.c
ptrace.c
range.c
reboot.c
relay.c kernel/relay.c: fix memleak on destroy relay channel 2020-08-26 10:30:59 +02:00
resource.c
rseq.c
seccomp.c
signal.c
smp.c
smpboot.c
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c kernel/sys.c: avoid copying possible padding bytes in copy_to_user 2020-10-01 13:14:29 +02:00
sysctl_binary.c
sysctl.c
task_work.c
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c coredump: fix crash when umh is disabled 2020-05-14 07:57:21 +02:00
up.c
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
watchdog_hld.c
watchdog.c
workqueue_internal.h
workqueue.c