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linux/drivers/cpufreq
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Henry Willard 2a3eb51e30 cpufreq: governor: Avoid accessing invalid governor_data 
If cppc_cpufreq.ko is deleted at the same time that tuned-adm is
changing profiles, there is a small chance that a race can occur
between cpufreq_dbs_governor_exit() and cpufreq_dbs_governor_limits()
resulting in a system failure when the latter tries to use
policy->governor_data that has been freed by the former.

This patch uses gov_dbs_data_mutex to synchronize access.

Fixes: e788892ba3cc (cpufreq: governor: Get rid of governor events)
Signed-off-by: Henry Willard <henry.willard@oracle.com>
[ rjw: Subject, minor white space adjustment ]
Cc: 4.8+ <stable@vger.kernel.org> # 4.8+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-08-16 23:03:29 +02:00
..
acpi-cpufreq.c
Additional power management updates for 4.18-rc1
2018-06-13 07:24:18 -07:00
amd_freq_sensitivity.c
cpufreq: AMD: Ignore the check for ProcFeedback in ST/CZ
2018-02-07 11:26:37 +01:00
arm_big_little_dt.c
cpufreq: arm_big_little: make cpufreq_arm_bL_ops structures const
2017-11-08 23:22:20 +01:00
arm_big_little.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
arm_big_little.h
cpufreq: arm_big_little: make function arguments and structure pointer const
2017-11-08 23:22:19 +01:00
armada-37xx-cpufreq.c
cpufreq: armada-37xx: Add AVS support
2018-07-18 10:10:25 +02:00
bmips-cpufreq.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
brcmstb-avs-cpufreq.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
cppc_cpufreq.c
cpufreq / CPPC: Add cpuinfo_cur_freq support for CPPC
2018-07-18 10:13:16 +02:00
cpufreq_conservative.c
cpufreq: governor: Drop min_sampling_rate
2017-07-22 02:25:20 +02:00
cpufreq_governor_attr_set.c
cpufreq: governor: Move abstract gov_attr_set code to seperate file
2016-04-02 01:09:01 +02:00
cpufreq_governor.c
cpufreq: governor: Avoid accessing invalid governor_data
2018-08-16 23:03:29 +02:00
cpufreq_governor.h
cpufreq: Replace "max_transition_latency" with "dynamic_switching"
2017-07-26 00:15:45 +02:00
cpufreq_ondemand.c
cpufreq: governor: Drop min_sampling_rate
2017-07-22 02:25:20 +02:00
cpufreq_ondemand.h
cpufreq: ondemand: Don't keep a copy of freq_table pointer
2016-06-09 00:58:06 +02:00
cpufreq_performance.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
cpufreq_powersave.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
cpufreq_stats.c
cpufreq: stats: Change return type of cpufreq_stats_update() as void
2018-01-05 13:22:46 +01:00
cpufreq_userspace.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
cpufreq-dt-platdev.c
cpufreq: Add Kryo CPU scaling driver
2018-05-30 12:53:11 +02:00
cpufreq-dt.c
cpufreq: dt: Allow platform specific suspend/resume callbacks
2018-05-10 11:43:59 +02:00
cpufreq-dt.h
cpufreq: dt: Allow platform specific suspend/resume callbacks
2018-05-10 11:43:59 +02:00
cpufreq-nforce2.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
cpufreq.c
cpufreq: Fix a circular lock dependency problem
2018-07-26 10:37:36 +02:00
davinci-cpufreq.c
ARM: davinci: da850: fix da850_set_pll0rate()
2017-01-02 15:02:51 +05:30
e_powersaver.c
cpufreq: e_powersaver: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
elanfreq.c
cpufreq: elanfreq: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
exynos5440-cpufreq.c
cpufreq: Add and use cpufreq_for_each_{valid_,}entry_idx()
2018-02-08 10:21:39 +01:00
freq_table.c
cpufreq: Drop cpufreq_table_validate_and_show()
2018-04-10 08:40:45 +02:00
gx-suspmod.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
highbank-cpufreq.c
…
ia64-acpi-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
imx6q-cpufreq.c
cpufreq: imx6q/thermal: imx: register cooling device depending on OF
2018-07-02 11:26:36 +02:00
intel_pstate.c
cpufreq: intel_pstate: Ignore turbo active ratio in HWP
2018-08-06 10:22:27 +02:00
Kconfig
cpufreq: remove at32ap-cpufreq
2018-02-07 11:44:23 +01:00
Kconfig.arm
cpufreq: kryo: allow building as a loadable module
2018-06-06 08:29:29 +02:00
Kconfig.powerpc
…
Kconfig.x86
sched/x86: Change CONFIG_SCHED_ITMT to CONFIG_SCHED_MC_PRIO
2016-11-30 08:27:08 +01:00
kirkwood-cpufreq.c
cpufreq: kirkwood-cpufreq:- Handle return value of clk_prepare_enable()
2017-05-30 00:09:41 +02:00
longhaul.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
longhaul.h
…
longrun.c
cpufreq: Don't set transition_latency for setpolicy drivers
2017-07-26 00:15:43 +02:00
loongson1-cpufreq.c
CPUFREQ: Loongson1: Replace goto out with return in ls1x_cpufreq_probe()
2016-05-13 14:02:08 +02:00
loongson2_cpufreq.c
cpufreq: Loongson2: constify platform_device_id
2017-08-18 01:44:21 +02:00
Makefile
cpufreq: Add Kryo CPU scaling driver
2018-05-30 12:53:11 +02:00
maple-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
mediatek-cpufreq.c
cpufreq: mediatek: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
mvebu-cpufreq.c
cpufreq: mvebu: Free opp if registering failed
2017-12-16 02:29:43 +01:00
omap-cpufreq.c
PM / OPP: Update OPP users to put reference
2017-01-30 09:22:21 +01:00
p4-clockmod.c
cpufreq: p4-clockmod: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
pasemi-cpufreq.c
cpufreq: Add and use cpufreq_for_each_{valid_,}entry_idx()
2018-02-08 10:21:39 +01:00
pcc-cpufreq.c
Merge back cpufreq material for 4.19.
2018-07-25 13:28:01 +02:00
pmac32-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
pmac64-cpufreq.c
cpufreq: Convert to using %pOF instead of full_name
2017-08-25 01:20:46 +02:00
powernow-k6.c
cpufreq: powernow: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
powernow-k7.c
cpufreq: powernow: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
powernow-k7.h
…
powernow-k8.c
cpufreq: powernow: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
powernow-k8.h
…
powernv-cpufreq.c
cpufreq: powernv: Fix hardlockup due to synchronous smp_call in timer interrupt
2018-04-27 16:16:10 +10:00
ppc_cbe_cpufreq_pervasive.c
…
ppc_cbe_cpufreq_pmi.c
cpufreq: Remove CPUFREQ_START notifier event
2017-02-04 00:05:30 +01:00
ppc_cbe_cpufreq.c
cpufreq: ppc_cbe: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
ppc_cbe_cpufreq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pxa2xx-cpufreq.c
cpufreq: pxa: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
pxa3xx-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
qcom-cpufreq-kryo.c
Merge back cpufreq material for 4.19.
2018-07-30 11:27:01 +02:00
qoriq-cpufreq.c
cpufreq: qoirq: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
s3c24xx-cpufreq-debugfs.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s3c24xx-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
s3c64xx-cpufreq.c
cpufreq: s3c64xx: remove incorrect __init annotation
2016-12-21 02:54:18 +01:00
s3c2410-cpufreq.c
…
s3c2412-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s3c2416-cpufreq.c
cpufreq: s3c2416: double free on driver init error path
2017-02-09 01:22:45 +01:00
s3c2440-cpufreq.c
cpufreq: s3c2440: fix spelling mistake: "divsiors" -> "divisors"
2018-05-10 11:50:42 +02:00
s5pv210-cpufreq.c
cpufreq: s5pv210: add missing of_node_put()
2017-07-26 22:54:01 +02:00
sa1100-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
sa1110-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
sc520_freq.c
cpufreq: sc520: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
scmi-cpufreq.c
firmware: arm_scmi: rename get_transition_latency and add_opps_to_device
2018-05-10 10:49:40 +01:00
scpi-cpufreq.c
cpufreq: scpi: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
sfi-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
sh-cpufreq.c
cpufreq: sh: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
sparc-us2e-cpufreq.c
cpufreq: sparc: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
sparc-us3-cpufreq.c
cpufreq: sparc: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
spear-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
speedstep-centrino.c
cpufreq: speedstep: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
speedstep-ich.c
cpufreq: speedstep: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
speedstep-lib.c
cpufreq: speedstep: fix speedstep_detect_processor()'s return type
2018-05-10 11:46:00 +02:00
speedstep-lib.h
…
speedstep-smi.c
cpufreq: speedstep: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
sti-cpufreq.c
cpufreq: Convert to using %pOF instead of full_name
2017-08-25 01:20:46 +02:00
tango-cpufreq.c
cpufreq: dt: Don't use generic platdev driver for tango
2017-07-22 02:20:59 +02:00
tegra20-cpufreq.c
cpufreq: tegra20: Wrap cpufreq into platform driver
2018-05-21 13:44:24 +02:00
tegra124-cpufreq.c
cpufreq: tegra124: No need of setting platform-data
2016-04-09 01:12:09 +02:00
tegra186-cpufreq.c
cpufreq: tegra186: Don't validate the frequency table twice
2018-03-20 12:07:53 +01:00
ti-cpufreq.c
cpufreq: ti-cpufreq: Use devres managed API in probe()
2018-06-06 08:34:31 +02:00
unicore2-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
vexpress-spc-cpufreq.c
cpufreq: arm_big_little: make cpufreq_arm_bL_ops structures const
2017-11-08 23:22:20 +01:00