Douglas Anderson f3ba339962 kernel/cpu_pm: Fix uninitted local in cpu_pm ...

commit b5945214b76a1f22929481724ffd448000ede914 upstream.

cpu_pm_notify() is basically a wrapper of notifier_call_chain().
notifier_call_chain() doesn't initialize *nr_calls to 0 before it
starts incrementing it--presumably it's up to the callers to do this.

Unfortunately the callers of cpu_pm_notify() don't init *nr_calls.
This potentially means you could get too many or two few calls to
CPU_PM_ENTER_FAILED or CPU_CLUSTER_PM_ENTER_FAILED depending on the
luck of the stack.

Let's fix this.

Fixes: ab10023e00 ("cpu_pm: Add cpu power management notifiers")
Cc: stable@vger.kernel.org
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20200504104917.v6.3.I2d44fc0053d019f239527a4e5829416714b7e299@changeid
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-06-20 10:25:19 +02:00

..

bpf

bpf: Explicitly memset some bpf info structures declared on the stack

2020-04-02 16:34:37 +02:00

cgroup

cgroup1: don't call release_agent when it is ""

2020-04-02 16:34:27 +02:00

configs

ANDROID: binder: add hwbinder,vndbinder to BINDER_DEVICES.

2017-08-22 18:43:23 -07:00

debug

kgdb: Prevent infinite recursive entries to the debugger

2020-06-20 10:25:08 +02:00

events

perf: Add cond_resched() to task_function_call()

2020-06-20 10:25:06 +02:00

gcov

kernel/gcov/fs.c: gcov_seq_next() should increase position index

2020-05-02 17:24:14 +02:00

irq

genirq/generic_pending: Do not lose pending affinity update

2020-06-03 08:18:12 +02:00

livepatch

livepatch: Nullify obj->mod in klp_module_coming()'s error path

2019-10-07 18:55:09 +02:00

locking

locktorture: Print ratio of acquisitions, not failures

2020-04-24 08:01:23 +02:00

power

PM: hibernate: Freeze kernel threads in software_resume()

2020-05-05 19:15:50 +02:00

printk

printk: fix integer overflow in setup_log_buf()

2019-12-01 09:13:17 +01:00

rcu

rcuperf: Fix cleanup path for invalid perf_type strings

2019-05-31 06:47:33 -07:00

sched

sched/fair: Don't NUMA balance for kthreads

2020-06-20 10:24:59 +02:00

time

clocksource: Prevent double add_timer_on() for watchdog_timer

2020-02-14 16:32:20 -05:00

trace

Stop the ad-hoc games with -Wno-maybe-initialized

2020-05-20 08:17:10 +02:00

.gitignore

…

acct.c

kernel/acct.c: fix the acct->needcheck check in check_free_space()

2018-01-10 09:31:17 +01:00

async.c

kernel/async.c: revert "async: simplify lowest_in_progress()"

2018-02-16 20:23:05 +01:00

audit_fsnotify.c

Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2017-05-03 11:05:15 -07:00

audit_tree.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

audit_watch.c

audit_get_nd(): don't unlock parent too early

2019-12-17 20:37:27 +01:00

audit.c

audit: fix a net reference leak in audit_list_rules_send()

2020-06-20 10:25:10 +02:00

audit.h

audit: fix a net reference leak in audit_list_rules_send()

2020-06-20 10:25:10 +02:00

auditfilter.c

audit: fix a net reference leak in audit_list_rules_send()

2020-06-20 10:25:10 +02:00

auditsc.c

audit: print empty EXECVE args

2019-12-01 09:14:03 +01:00

backtracetest.c

…

bounds.c

kbuild: fix kernel/bounds.c 'W=1' warning

2018-11-13 11:15:08 -08:00

capability.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

compat.c

make 'user_access_begin()' do 'access_ok()'

2020-06-20 10:24:58 +02:00

configs.c

…

context_tracking.c

…

cpu_pm.c

kernel/cpu_pm: Fix uninitted local in cpu_pm

2020-06-20 10:25:19 +02:00

cpu.c

x86/speculation: Remove redundant arch_smt_update() invocation

2020-04-24 08:00:41 +02:00

crash_core.c

kdump: write correct address of mem_section into vmcoreinfo

2018-01-17 09:45:27 +01:00

crash_dump.c

…

cred.c

memcg: account security cred as well to kmemcg

2020-01-09 10:17:54 +01:00

delayacct.c

delayacct: Use raw_spinlocks

2018-08-03 07:50:38 +02:00

dma.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

elfcore.c

kernel/elfcore.c: include proper prototypes

2019-10-11 18:18:42 +02:00

exec_domain.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

exit.c

exit: Move preemption fixup up, move blocking operations down

2020-06-20 10:25:10 +02:00

extable.c

extable: Enable RCU if it is not watching in kernel_text_address()

2017-09-23 16:50:20 -04:00

fork.c

futex: Split futex_mm_release() for exit/exec

2019-12-05 15:38:26 +01:00

freezer.c

…

futex.c

futex: Unbreak futex hashing

2020-04-02 16:34:21 +02:00

groups.c

kernel: make groups_sort calling a responsibility group_info allocators

2017-12-20 10:10:18 +01:00

hung_task.c

kernel: hung_task.c: disable on suspend

2019-04-20 09:15:05 +02:00

irq_work.c

…

jump_label.c

sched/core: Fix cpu.max vs. cpuhotplug deadlock

2018-12-05 19:41:17 +01:00

kallsyms.c

kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol

2019-09-21 07:15:38 +02:00

kcmp.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.locks

…

Kconfig.preempt

…

kcov.c

kcov: ensure irq code sees a valid area

2018-08-03 07:50:22 +02:00

kexec_core.c

kexec: Allocate decrypted control pages for kdump if SME is enabled

2019-11-24 08:23:15 +01:00

kexec_file.c

kexec_file: adjust declaration of kexec_purgatory

2017-07-12 16:26:02 -07:00

kexec_internal.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kexec.c

kdump: protect vmcoreinfo data under the crash memory

2017-07-12 16:26:00 -07:00

kmod.c

kmod: make request_module() return an error when autoloading is disabled

2020-04-24 08:00:44 +02:00

kprobes.c

kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic

2020-03-11 18:02:57 +01:00

ksysfs.c

kexec: move vmcoreinfo out of the kernel's .bss section

2017-07-12 16:25:59 -07:00

kthread.c

kthread, tracing: Don't expose half-written comm when creating kthreads

2018-08-03 07:50:21 +02:00

latencytop.c

…

Makefile

y2038: futex: Move compat implementation into futex.c

2019-12-05 15:38:22 +01:00

memremap.c

mm, devm_memremap_pages: kill mapping "System RAM" support

2019-01-13 10:01:02 +01:00

module_signing.c

…

module-internal.h

…

module.c

kernel/module: Fix memleak in module_add_modinfo_attrs()

2020-02-14 16:32:06 -05:00

notifier.c

x86/mm: split vmalloc_sync_all()

2020-04-02 16:34:20 +02:00

nsproxy.c

…

padata.c

padata: purge get_cpu and reorder_via_wq from padata_do_serial

2020-05-27 16:43:05 +02:00

panic.c

panic: ensure preemption is disabled during panic()

2019-10-17 13:43:19 -07:00

params.c

kernel/params.c: improve STANDARD_PARAM_DEF readability

2017-10-03 17:54:26 -07:00

pid_namespace.c

signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig

2019-07-31 07:28:21 +02:00

pid.c

pids: make task_tgid_nr_ns() safe

2017-08-21 12:47:31 -07:00

profile.c

…

ptrace.c

ptrace: reintroduce usage of subjective credentials in ptrace_has_cap()

2020-01-23 08:20:32 +01:00

range.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

reboot.c

…

relay.c

kernel/relay.c: handle alloc_percpu returning NULL in relay_open

2020-06-11 09:22:58 +02:00

resource.c

resource: fix integer overflow at reallocation

2018-04-24 09:36:22 +02:00

seccomp.c

seccomp: Move speculation migitation control to arch code

2018-05-22 18:54:04 +02:00

signal.c

signal: Extend exec_id to 64bits

2020-04-24 08:00:38 +02:00

smp.c

cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM

2019-02-12 19:46:13 +01:00

smpboot.c

watchdog/core, powerpc: Lock cpus across reconfiguration

2017-10-04 10:53:54 +02:00

smpboot.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

softirq.c

Mark HI and TASKLET softirq synchronous

2018-08-15 18:12:47 +02:00

stacktrace.c

…

stop_machine.c

stop_machine: Atomically queue and wake stopper threads

2018-09-05 09:26:36 +02:00

sys_ni.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

sys.c

kernel/sys.c: prctl: fix false positive in validate_prctl_map()

2019-06-15 11:54:52 +02:00

sysctl_binary.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

sysctl.c

kernel: sysctl: make drop_caches write-only

2020-01-04 13:59:57 +01:00

task_work.c

locking/barriers: Convert users of lockless_dereference() to READ_ONCE()

2017-12-25 14:26:21 +01:00

taskstats.c

taskstats: fix data-race

2020-01-09 10:17:53 +01:00

test_kprobes.c

…

torture.c

torture: Fix typo suppressing CPU-hotplug statistics

2017-07-25 13:04:45 -07:00

tracepoint.c

tracepoint: Do not warn on ENOMEM

2018-05-09 09:51:50 +02:00

tsacct.c

…

ucount.c

…

uid16.c

kernel: make groups_sort calling a responsibility group_info allocators

2017-12-20 10:10:18 +01:00

umh.c

coredump: fix crash when umh is disabled

2020-05-20 08:16:58 +02:00

up.c

smp: Avoid using two cache lines for struct call_single_data

2017-08-29 15:14:38 +02:00

user_namespace.c

userns: move user access out of the mutex

2018-09-09 19:56:00 +02:00

user-return-notifier.c

…

user.c

…

utsname_sysctl.c

sys: don't hold uts_sem while accessing userspace memory

2018-09-09 19:56:00 +02:00

utsname.c

…

watchdog_hld.c

watchdog: Mark watchdog touch functions as notrace

2018-09-05 09:26:42 +02:00

watchdog.c

watchdog/softlockup: Enforce that timestamp is valid on boot

2020-02-28 16:36:05 +01:00

workqueue_internal.h

Merge branch 'for-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2017-11-06 12:26:49 -08:00

workqueue.c

workqueue: don't use wq_select_unbound_cpu() for bound works

2020-03-20 10:54:16 +01:00