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Douglas Anderson 262c6e883e kernel/cpu_pm: Fix uninitted local in cpu_pm 
commit b5945214b7 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>
2020-06-22 09:05:28 +02:00
..
bpf
cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled
2020-05-02 17:25:53 +02:00
cgroup
Revert "cgroup: Add memory barriers to plug cgroup_rstat_updated() race window"
2020-06-07 13:17:53 +02:00
configs
…
debug
kgdb: Prevent infinite recursive entries to the debugger
2020-06-22 09:05:11 +02:00
dma
dma-debug: add a schedule point in debug_dma_dump_mappings()
2020-01-04 19:12:43 +01:00
events
perf: Add cond_resched() to task_function_call()
2020-06-22 09:05:08 +02:00
gcov
kernel/gcov/fs.c: gcov_seq_next() should increase position index
2020-04-29 16:31:12 +02:00
irq
genirq/irqdomain: Check pointer in irq_domain_alloc_irqs_hierarchy()
2020-04-17 10:48:41 +02:00
livepatch
livepatch: Nullify obj->mod in klp_module_coming()'s error path
2019-10-07 18:57:10 +02:00
locking
locktorture: Print ratio of acquisitions, not failures
2020-04-23 10:30:23 +02:00
power
PM: hibernate: Freeze kernel threads in software_resume()
2020-05-06 08:13:28 +02:00
printk
printk: fix exclusive_console replaying
2020-02-11 04:33:51 -08:00
rcu
rcu: Avoid data-race in rcu_gp_fqs_check_wake()
2020-02-11 04:33:55 -08:00
sched
sched/core: Fix illegal RCU from offline CPUs
2020-06-22 09:05:14 +02:00
time
clocksource: Prevent double add_timer_on() for watchdog_timer
2020-02-11 04:34:18 -08:00
trace
Stop the ad-hoc games with -Wno-maybe-initialized
2020-05-20 08:18:45 +02:00
.gitignore
…
acct.c
acct_on(): don't mess with freeze protection
2019-05-31 06:46:05 -07:00
async.c
…
audit_fsnotify.c
…
audit_tree.c
audit: Embed key into chunk
2019-12-13 08:51:11 +01:00
audit_watch.c
audit_get_nd(): don't unlock parent too early
2019-12-13 08:51:02 +01:00
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
audit: print empty EXECVE args
2019-12-01 09:17:17 +01:00
backtracetest.c
…
bounds.c
kbuild: fix kernel/bounds.c 'W=1' warning
2018-11-13 11:08:47 -08:00
capability.c
LSM: generalize flag passing to security_capable
2020-01-23 08:21:29 +01:00
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
kernel/crash_core.c: print timestamp using time64_t
2018-08-22 10:52:47 -07:00
crash_dump.c
…
cred.c
memcg: account security cred as well to kmemcg
2020-01-09 10:19:00 +01:00
delayacct.c
…
dma.c
…
elfcore.c
kernel/elfcore.c: include proper prototypes
2019-10-11 18:21:23 +02:00
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
fork,memcg: alloc_thread_stack_node needs to set tsk->stack
2020-01-27 14:50:58 +01:00
freezer.c
…
futex.c
futex: Unbreak futex hashing
2020-03-25 08:06:14 +01:00
groups.c
…
hung_task.c
kernel: hung_task.c: disable on suspend
2019-04-20 09:16:02 +02:00
iomem.c
…
irq_work.c
irq_work: Do not raise an IPI when queueing work on the local CPU
2019-05-31 06:46:19 -07:00
jump_label.c
jump_label: move 'asm goto' support test to Kconfig
2019-06-04 08:02:34 +02:00
kallsyms.c
kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol
2019-09-21 07:17:02 +02:00
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
kernel/kcov.c: mark write_comp_data() as notrace
2019-02-12 19:47:20 +01:00
kexec_core.c
kexec: Allocate decrypted control pages for kdump if SME is enabled
2019-11-24 08:20:29 +01:00
kexec_file.c
…
kexec_internal.h
…
kexec.c
…
kmod.c
kmod: make request_module() return an error when autoloading is disabled
2020-04-17 10:48:52 +02:00
kprobes.c
kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic
2020-03-11 14:14:47 +01:00
ksysfs.c
…
kthread.c
…
latencytop.c
…
Makefile
y2038: futex: Move compat implementation into futex.c
2019-12-01 09:17:38 +01:00
memremap.c
mm/memory_hotplug: shrink zones when offlining memory
2020-01-29 16:43:27 +01:00
module_signing.c
…
module-internal.h
…
module.c
module: avoid setting info->name early in case we can fall back to info->mod->name
2020-02-24 08:34:49 +01:00
notifier.c
x86/mm: split vmalloc_sync_all()
2020-03-25 08:06:13 +01:00
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
kernel/panic.c: do not append newline to the stack protector panic string
2019-12-01 09:17:10 +01:00
params.c
…
pid_namespace.c
signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig
2019-07-26 09:14:01 +02:00
pid.c
Fix failure path in alloc_pid()
2019-01-13 09:51:06 +01:00
profile.c
…
ptrace.c
ptrace: reintroduce usage of subjective credentials in ptrace_has_cap()
2020-01-23 08:21:29 +01:00
range.c
…
reboot.c
…
relay.c
kernel/relay.c: handle alloc_percpu returning NULL in relay_open
2020-06-07 13:17:54 +02:00
resource.c
resource: fix locking in find_next_iomem_res()
2019-09-16 08:22:20 +02:00
rseq.c
…
seccomp.c
LSM: generalize flag passing to security_capable
2020-01-23 08:21:29 +01:00
signal.c
signal: Extend exec_id to 64bits
2020-04-17 10:48:47 +02:00
smp.c
cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM
2019-02-12 19:47:25 +01:00
smpboot.c
…
smpboot.h
…
softirq.c
…
stacktrace.c
…
stop_machine.c
…
sys_ni.c
…
sys.c
kernel/sys.c: prctl: fix false positive in validate_prctl_map()
2019-06-15 11:54:01 +02:00
sysctl_binary.c
…
sysctl.c
kernel: sysctl: make drop_caches write-only
2020-01-04 19:13:17 +01:00
task_work.c
…
taskstats.c
taskstats: fix data-race
2020-01-09 10:18:59 +01:00
test_kprobes.c
…
torture.c
…
tracepoint.c
tracepoint: Fix tracepoint array element size mismatch
2018-10-17 15:35:29 -04:00
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
userns: also map extents in the reverse map to kernel IDs
2018-11-13 11:09:00 -08:00
user-return-notifier.c
…
user.c
userns: use irqsave variant of refcount_dec_and_lock()
2018-08-22 10:52:47 -07:00
utsname_sysctl.c
…
utsname.c
…
watchdog_hld.c
watchdog: Mark watchdog touch functions as notrace
2018-08-30 12:56:40 +02:00
watchdog.c
watchdog/softlockup: Enforce that timestamp is valid on boot
2020-02-24 08:34:49 +01:00
workqueue_internal.h
…
workqueue.c
workqueue: don't use wq_select_unbound_cpu() for bound works
2020-03-18 07:14:20 +01:00