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Konstantin Khlebnikov fa6ad3acff sched/core: Handle overflow in cpu_shares_write_u64 
[ Upstream commit 5b61d50ab4ef590f5e1d4df15cd2cea5f5715308 ]

Bit shift in scale_load() could overflow shares. This patch saturates
it to MAX_SHARES like following sched_group_set_shares().

Example:

 # echo 9223372036854776832 > cpu.shares
 # cat cpu.shares

Before patch: 1024
After pattch: 262144

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/155125501891.293431.3345233332801109696.stgit@buzz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-06 18:18:55 +02:00
..
bpf A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
configs A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
debug A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
events perf/core: Restore mmap record type correctly 2020-04-06 15:16:49 +02:00
gcov A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
irq genirq: Prevent use-after-free and work list corruption 2020-04-06 16:43:02 +02:00
livepatch A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
locking Revert "locking/lockdep: Add debug_locks check in __lock_downgrade()" 2020-04-06 15:57:19 +02:00
power PM / Hibernate: Call flush_icache_range() on pages restored in-place 2020-04-06 12:52:20 +02:00
printk A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
rcu A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sched sched/core: Handle overflow in cpu_shares_write_u64 2020-04-06 18:18:55 +02:00
time timer/debug: Change /proc/timer_stats from 0644 to 0600 2020-04-06 16:43:18 +02:00
trace tracing: Fix partial reading of trace event's id file 2020-04-06 18:14:00 +02:00
acct.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
async.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
audit_fsnotify.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
audit_tree.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
audit_watch.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
audit.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
audit.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
auditfilter.c audit: fix a memory leak bug 2020-04-06 18:18:45 +02:00
auditsc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
backtracetest.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bounds.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
capability.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cgroup_freezer.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cgroup_pids.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cgroup.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
compat.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
configs.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
context_tracking.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cpu_pm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cpu.c cpu/speculation: Add 'mitigations=' cmdline option 2020-04-06 17:00:51 +02:00
cpuset.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
crash_dump.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cred.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
delayacct.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dma.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
elfcore.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
exec_domain.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
exit.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
extable.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
fork.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
freezer.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
futex_compat.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
futex.c futex: Ensure that futex address is aligned in handle_futex_death() 2020-04-06 10:58:14 +02:00
groups.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
hung_task.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
irq_work.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
jump_label.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kallsyms.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kaslr.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kcmp.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.freezer A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.hz A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.locks A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.preempt A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kcov.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kexec_core.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kexec_file.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kexec_internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kexec.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kmod.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kprobes.c kprobes: Fix error check when reusing optimized probes 2020-04-06 15:57:04 +02:00
ksysfs.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kthread.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
latencytop.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Makefile A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
membarrier.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memremap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
module_signing.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
module-internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
module.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
notifier.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
nsproxy.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
padata.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
panic.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
params.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
pid_namespace.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
pid.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
profile.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ptrace.c x86/speculation: Apply IBPB more strictly to avoid cross-process data leak 2020-04-06 16:50:35 +02:00
range.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
reboot.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
relay.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
resource.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
seccomp.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
signal.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
smp.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
smpboot.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
smpboot.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
softirq.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
stacktrace.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
stop_machine.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sys_ni.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sys.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sysctl_binary.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sysctl.c kernel/sysctl.c: fix out-of-bounds access when setting file-max 2020-04-06 15:57:22 +02:00
task_work.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
taskstats.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
test_kprobes.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
torture.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tracepoint.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tsacct.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
uid16.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
up.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
user_namespace.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
user-return-notifier.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
user.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
utsname_sysctl.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
utsname.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
watchdog.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
workqueue_internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
workqueue.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30