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linux/kernel
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Catalin Marinas 8a1d3de19b cpuidle: Do not access cpuidle_devices when !CONFIG_CPU_IDLE 
commit 9bd616e3dbedfc103f158197c8ad93678849b1ed upstream.

The cpuidle_devices per-CPU variable is only defined when CPU_IDLE is
enabled. Commit c8cc7d4de7a4 ("sched/idle: Reorganize the idle loop")
removed the #ifdef CONFIG_CPU_IDLE around cpuidle_idle_call() with the
compiler optimising away __this_cpu_read(cpuidle_devices). However, with
CONFIG_UBSAN && !CONFIG_CPU_IDLE, this optimisation no longer happens
and the kernel fails to link since cpuidle_devices is not defined.

This patch introduces an accessor function for the current CPU cpuidle
device (returning NULL when !CONFIG_CPU_IDLE) and uses it in
cpuidle_idle_call().

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: 4.5+ <stable@vger.kernel.org> # 4.5+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-10 07:41:43 -08:00
..
bpf
bpf: generally move prog destruction to RCU deferral
2018-11-10 07:41:37 -08:00
configs
kconfig: tinyconfig: provide whole choice blocks to avoid warnings
2016-09-24 10:07:42 +02:00
debug
kdb: make "mdr" command repeat
2018-05-30 07:49:17 +02:00
events
bpf: generally move prog destruction to RCU deferral
2018-11-10 07:41:37 -08:00
gcov
gcov: disable for COMPILE_TEST
2018-01-23 19:50:10 +01:00
irq
genirq: Delay incrementing interrupt count if it's disabled/pending
2018-09-15 09:40:40 +02:00
livepatch
livepatch: x86: fix relocation computation with kASLR
2015-11-11 17:36:04 +01:00
locking
locking/osq_lock: Fix osq_lock queue corruption
2018-09-19 22:48:56 +02:00
power
PM / sleep: wakeup: Fix build error caused by missing SRCU support
2018-09-09 20:04:34 +02:00
printk
braille-console: Fix value returned by _braille_console_setup
2018-03-22 09:23:23 +01:00
rcu
rcu: Allow for page faults in NMI handlers
2017-10-18 09:20:41 +02:00
sched
cpuidle: Do not access cpuidle_devices when !CONFIG_CPU_IDLE
2018-11-10 07:41:43 -08:00
time
alarmtimer: Prevent overflow for relative nanosleep
2018-10-10 08:52:05 +02:00
trace
tracing: Skip more functions when doing stack tracing of events
2018-11-10 07:41:35 -08:00
.gitignore
certs: add .gitignore to stop git nagging about x509_certificate_list
2015-10-21 15:18:35 +01:00
acct.c
kernel/acct.c: fix the acct->needcheck check in check_free_space()
2018-01-10 09:27:08 +01:00
async.c
kernel/async.c: revert "async: simplify lowest_in_progress()"
2018-02-16 20:09:45 +01:00
audit_fsnotify.c
audit: clean simple fsnotify implementation
2015-08-06 16:14:53 -04:00
audit_tree.c
audit: audit_tree_match can be boolean
2015-11-04 08:23:51 -05:00
audit_watch.c
audit: fix use-after-free in audit_add_watch
2018-09-26 08:35:08 +02:00
audit.c
audit: return on memory error to avoid null pointer dereference
2018-05-30 07:49:16 +02:00
audit.h
audit: audit_tree_match can be boolean
2015-11-04 08:23:51 -05:00
auditfilter.c
audit: allow not equal op for audit by executable
2018-08-06 16:24:38 +02:00
auditsc.c
audit: allow not equal op for audit by executable
2018-08-06 16:24:38 +02:00
backtracetest.c
…
bounds.c
…
capability.c
exec: Ensure mm->user_ns contains the execed files
2017-01-06 11:16:14 +01:00
cgroup_freezer.c
cgroup: fix handling of multi-destination migration from subtree_control enabling
2015-12-03 10:18:21 -05:00
cgroup_pids.c
cgroup_pids: don't account for the root cgroup
2015-12-03 10:18:21 -05:00
cgroup.c
cgroup: Fix deadlock in cpu hotplug path
2018-10-13 09:11:33 +02:00
compat.c
compat: cleanup coding in compat_get_bitmap() and compat_put_bitmap()
2015-06-04 23:57:18 +02:00
configs.c
…
context_tracking.c
context_tracking: avoid irq_save/irq_restore on guest entry and exit
2015-11-10 12:06:23 +01:00
cpu_pm.c
kernel/cpu_pm: fix cpu_cluster_pm_exit comment
2015-09-03 02:42:20 +02:00
cpu.c
stable-fixup: hotplug: fix unused function warning
2017-01-12 11:22:48 +01:00
cpuset.c
sched/cpuset/pm: Fix cpuset vs. suspend-resume bugs
2017-10-12 11:27:35 +02:00
crash_dump.c
…
cred.c
cred: Reject inodes with invalid ids in set_create_file_as()
2016-09-15 08:27:49 +02:00
delayacct.c
…
dma.c
…
elfcore.c
…
exec_domain.c
Remove rest of exec domains.
2015-04-12 21:03:31 +02:00
exit.c
kernel/exit.c: avoid undefined behaviour when calling wait4()
2018-05-26 08:48:51 +02:00
extable.c
kernel/extable.c: mark core_kernel_text notrace
2017-07-21 07:44:56 +02:00
fork.c
kthread: Fix use-after-free if kthread fork fails
2018-09-19 22:48:55 +02:00
freezer.c
…
futex_compat.c
ptrace: use fsuid, fsgid, effective creds for fs access checks
2016-02-25 12:01:16 -08:00
futex.c
futex: futex_wake_op, fix sign_extend32 sign bits
2018-05-26 08:48:51 +02:00
groups.c
kernel: make groups_sort calling a responsibility group_info allocators
2018-01-10 09:27:10 +01:00
hung_task.c
kernel/hung_task.c: change hung_task.c to use for_each_process_thread()
2015-04-15 16:35:22 -07:00
irq_work.c
treewide: Remove old email address
2015-11-23 09:44:58 +01:00
jump_label.c
jump_label: Invoke jump_label_test() via early_initcall()
2017-12-16 10:33:55 +01:00
kallsyms.c
…
kcmp.c
ptrace: use fsuid, fsgid, effective creds for fs access checks
2016-02-25 12:01:16 -08:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
locking/qrwlock: Rename QUEUE_RWLOCK to QUEUED_RWLOCKS
2015-05-12 09:46:00 +02:00
Kconfig.preempt
…
kexec_core.c
kexec: use file name as the output message prefix
2015-11-06 17:50:42 -08:00
kexec_file.c
kexec: fix double-free when failing to relocate the purgatory
2016-09-24 10:07:36 +02:00
kexec_internal.h
kexec: split kexec_file syscall code to kexec_file.c
2015-09-10 13:29:01 -07:00
kexec.c
kexec: use file name as the output message prefix
2015-11-06 17:50:42 -08:00
kmod.c
kmod: don't run async usermode helper as a child of kworker thread
2015-10-23 17:55:10 +09:00
kprobes.c
kprobes: Make list and blacklist root user read only
2018-09-05 09:18:40 +02:00
ksysfs.c
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
kthread.c
kthread, tracing: Don't expose half-written comm when creating kthreads
2018-09-09 20:04:34 +02:00
latencytop.c
…
Makefile
sys_membarrier(): system-wide memory barrier (generic, x86)
2015-09-11 15:21:34 -07:00
membarrier.c
Fix: Disable sys_membarrier when nohz_full is enabled
2017-03-12 06:37:26 +01:00
memremap.c
mm: fix devm_memremap_pages crash, use mem_hotplug_{begin, done}
2017-01-19 20:17:18 +01:00
module_signing.c
KEYS: Merge the type-specific data with the payload data
2015-10-21 15:18:36 +01:00
module-internal.h
…
module.c
module: exclude SHN_UNDEF symbols from kallsyms api
2018-10-10 08:52:07 +02:00
notifier.c
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-01 08:40:25 -07:00
nsproxy.c
…
padata.c
padata: free correct variable
2017-05-20 14:27:02 +02:00
panic.c
kernel/panic.c: add missing \n
2017-07-05 14:37:19 +02:00
params.c
Nothing exciting, minor tweaks and cleanups.
2015-11-09 15:53:39 -08:00
pid_namespace.c
pid_ns: Sleep in TASK_INTERRUPTIBLE in zap_pid_ns_processes
2017-05-25 14:30:11 +02:00
pid.c
pidns: disable pid allocation if pid_ns_prepare_proc() is failed in alloc_pid()
2018-04-13 19:50:03 +02:00
profile.c
profile: hide unused functions when !CONFIG_PROC_FS
2018-02-25 11:03:44 +01:00
ptrace.c
ptrace: Properly initialize ptracer_cred on fork
2017-06-14 13:16:20 +02:00
range.c
…
reboot.c
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
relay.c
kernel/relay.c: limit kmalloc size to KMALLOC_MAX_SIZE
2018-05-30 07:49:00 +02:00
resource.c
resource: fix integer overflow at reallocation
2018-04-24 09:32:05 +02:00
seccomp.c
seccomp: Move speculation migitation control to arch code
2018-07-25 10:18:27 +02:00
signal.c
kernel/signal.c: avoid undefined behaviour in kill_something_info
2018-05-30 07:48:52 +02:00
smp.c
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd
2015-11-06 17:50:42 -08:00
smpboot.c
stop_machine: Kill smp_hotplug_thread->pre_unpark, introduce stop_machine_unpark()
2015-10-20 10:23:55 +02:00
smpboot.h
…
softirq.c
…
stacktrace.c
…
stop_machine.c
kernel: remove stop_machine() Kconfig dependency
2015-12-12 10:15:34 -08:00
sys_ni.c
mm: mlock: add new mlock system call
2015-11-05 19:34:48 -08:00
sys.c
sys: don't hold uts_sem while accessing userspace memory
2018-09-09 20:04:35 +02:00
sysctl_binary.c
fs/coredump: prevent fsuid=0 dumps into user-controlled directories
2016-04-12 09:08:58 -07:00
sysctl.c
sched/sysctl: Check user input value of sysctl_sched_time_avg
2018-09-05 09:18:33 +02:00
task_work.c
task_work: remove fifo ordering guarantee
2015-09-05 13:46:58 -07:00
taskstats.c
…
test_kprobes.c
…
torture.c
torture: Consolidate cond_resched_rcu_qs() into stutter_wait()
2015-10-06 11:25:01 -07:00
tracepoint.c
tracepoint: Do not warn on ENOMEM
2018-05-16 10:06:47 +02:00
tsacct.c
…
uid16.c
kernel: make groups_sort calling a responsibility group_info allocators
2018-01-10 09:27:10 +01:00
up.c
…
user_namespace.c
userns: move user access out of the mutex
2018-09-09 20:04:35 +02:00
user-return-notifier.c
…
user.c
…
utsname_sysctl.c
sys: don't hold uts_sem while accessing userspace memory
2018-09-09 20:04:35 +02:00
utsname.c
…
watchdog.c
kernel/watchdog: use nmi registers snapshot in hardlockup handler
2017-01-06 11:16:16 +01:00
workqueue_internal.h
workqueue: Fix NULL pointer dereference
2017-11-15 17:13:11 +01:00
workqueue.c
workqueue: use put_device() instead of kfree()
2018-05-30 07:49:04 +02:00