mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-20 01:20:54 +00:00
Code Issues Releases Wiki Activity
linux-stable/drivers/cpufreq
History
Rafael J. Wysocki 0049457bfd cpufreq: Fix governor module removal race 
[ Upstream commit a8b149d32b ]

It is possible to remove a cpufreq governor module after
cpufreq_parse_governor() has returned success in
store_scaling_governor() and before cpufreq_set_policy()
acquires a reference to it, because the governor list is
not protected during that period and nothing prevents the
governor from being unregistered then.

Prevent that from happening by acquiring an extra reference
to the governor module temporarily in cpufreq_parse_governor(),
under cpufreq_governor_mutex, and dropping it in
store_scaling_governor(), when cpufreq_set_policy() returns.

Note that the second cpufreq_parse_governor() call site is fine,
because it only cares about the policy member of new_policy.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-19 08:42:51 +01:00
..
acpi-cpufreq.c x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping 2018-02-22 15:42:24 +01:00
amd_freq_sensitivity.c cpufreq: Reuse new freq-table helpers 2016-07-07 00:14:27 +02:00
arm_big_little.c cpufreq: arm_big_little: Make ->get_transition_latency() mandatory 2017-07-26 00:15:44 +02:00
arm_big_little.h
arm_big_little_dt.c
at32ap-cpufreq.c
blackfin-cpufreq.c
bmips-cpufreq.c cpufreq: bmips-cpufreq: CPUfreq driver for Broadcom's BMIPS SoCs 2017-02-09 01:22:44 +01:00
brcmstb-avs-cpufreq.c cpufreq: brcmstb-avs-cpufreq: remove unnecessary platform_set_drvdata() 2017-02-09 01:22:46 +01:00
cppc_cpufreq.c cpufreq: remove setting of policy->cpu in policy->cpus during init 2017-08-18 01:41:37 +02:00
cpufreq-dt-platdev.c cpufreq: mediatek: add mediatek related projects into blacklist 2018-02-16 20:22:43 +01:00
cpufreq-dt.c cpufreq: Process remote callbacks from any CPU if the platform permits 2017-08-01 14:24:54 +02:00
cpufreq-dt.h cpufreq: dt: Support governor tunables per policy 2016-09-13 02:39:12 +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 governor module removal race 2018-03-19 08:42:51 +01:00
cpufreq_conservative.c cpufreq: governor: Drop min_sampling_rate 2017-07-22 02:25:20 +02:00
cpufreq_governor.c cpufreq: governor: Ensure sufficiently large sampling intervals 2018-01-31 14:03:50 +01:00
cpufreq_governor.h cpufreq: Replace "max_transition_latency" with "dynamic_switching" 2017-07-26 00:15:45 +02:00
cpufreq_governor_attr_set.c
cpufreq_ondemand.c cpufreq: governor: Drop min_sampling_rate 2017-07-22 02:25:20 +02:00
cpufreq_ondemand.h
cpufreq_performance.c
cpufreq_powersave.c
cpufreq_stats.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2017-07-14 13:12:32 -07:00
cpufreq_userspace.c
cris-artpec3-cpufreq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cris-etraxfs-cpufreq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
davinci-cpufreq.c ARM: davinci: da850: fix da850_set_pll0rate() 2017-01-02 15:02:51 +05:30
e_powersaver.c
elanfreq.c cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag 2017-07-26 00:15:46 +02:00
exynos5440-cpufreq.c cpufreq: exynos5440: Fix inconsistent indenting 2017-06-24 01:38:00 +02:00
freq_table.c cpufreq: Handle sorted frequency tables more efficiently 2016-07-07 00:13:20 +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 cpufreq/ia64: Replace racy task affinity logic 2017-04-15 12:20:55 +02:00
imx6q-cpufreq.c cpufreq: imx6q: Fix imx6sx low frequency support 2017-08-29 00:22:52 +02:00
intel_pstate.c ACPI updates for v4.14-rc1 2017-09-05 12:45:03 -07:00
Kconfig cpufreq: Add Loongson machine dependencies 2018-02-03 17:39:00 +01:00
Kconfig.arm cpufreq: dbx500: Delete obsolete driver 2017-08-22 15:50:02 +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 x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping 2018-02-22 15:42:24 +01:00
longhaul.h
longrun.c cpufreq: Don't set transition_latency for setpolicy drivers 2017-07-26 00:15:43 +02:00
loongson1-cpufreq.c
loongson2_cpufreq.c cpufreq: Loongson2: constify platform_device_id 2017-08-18 01:44:21 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
maple-cpufreq.c
mediatek-cpufreq.c cpufreq: mediatek: add support of cpufreq to MT7622 SoC 2017-08-10 01:29:53 +02:00
mvebu-cpufreq.c cpufreq: mvebu: fix integer to pointer cast 2016-06-13 23:49:43 +02:00
omap-cpufreq.c PM / OPP: Update OPP users to put reference 2017-01-30 09:22:21 +01:00
p4-clockmod.c x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping 2018-02-22 15:42:24 +01:00
pasemi-cpufreq.c cpufreq/pasemi: Adjust system_state check 2017-05-23 10:01:36 +02:00
pcc-cpufreq.c Revert "cpufreq: pcc-cpufreq: update default value of cpuinfo_transition_latency" 2016-07-22 23:51:06 +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
powernow-k7.c x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping 2018-02-22 15:42:24 +01:00
powernow-k7.h
powernow-k8.c format-security: move static strings to const 2017-05-08 17:15:14 -07:00
powernow-k8.h
powernv-cpufreq.c cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin 2018-02-22 15:42:15 +01:00
ppc_cbe_cpufreq.c
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
ppc_cbe_cpufreq_pervasive.c
ppc_cbe_cpufreq_pmi.c cpufreq: Remove CPUFREQ_START notifier event 2017-02-04 00:05:30 +01:00
pxa2xx-cpufreq.c
pxa3xx-cpufreq.c
qoriq-cpufreq.c thermal: cpu_cooling: use cpufreq_policy to register cooling device 2017-05-27 17:32:24 -07:00
s3c24xx-cpufreq-debugfs.c
s3c24xx-cpufreq.c cpufreq: s3c24xx: Fix broken s3c_cpufreq_init() 2018-03-08 22:41:06 -08:00
s3c64xx-cpufreq.c cpufreq: s3c64xx: remove incorrect __init annotation 2016-12-21 02:54:18 +01:00
s3c2410-cpufreq.c
s3c2412-cpufreq.c
s3c2416-cpufreq.c cpufreq: s3c2416: double free on driver init error path 2017-02-09 01:22:45 +01:00
s3c2440-cpufreq.c
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
scpi-cpufreq.c cpufreq: scpi: use new scpi_ops functions to remove duplicate code 2017-06-05 11:14:35 +01:00
sfi-cpufreq.c cpufreq: sfi: make freq_table static 2017-06-24 01:43:21 +02:00
sh-cpufreq.c cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag 2017-07-26 00:15:46 +02:00
sparc-us2e-cpufreq.c cpufreq/sparc-us2e: Replace racy task affinity logic 2017-04-15 12:20:56 +02:00
sparc-us3-cpufreq.c cpufreq/sparc-us3: Replace racy task affinity logic 2017-04-15 12:20:55 +02:00
spear-cpufreq.c
speedstep-centrino.c x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping 2018-02-22 15:42:24 +01:00
speedstep-ich.c cpufreq: speedstep: remove unnecessary static in speedstep_detect_chipset() 2017-07-16 02:12:35 +02:00
speedstep-lib.c x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping 2018-02-22 15:42:24 +01:00
speedstep-lib.h
speedstep-smi.c cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag 2017-07-26 00:15:46 +02:00
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
tegra124-cpufreq.c
tegra186-cpufreq.c cpufreq: Add Tegra186 cpufreq driver 2017-04-19 23:23:08 +02:00
ti-cpufreq.c cpufreq: ti-cpufreq: Support additional am43xx platforms 2017-09-20 00:51:01 +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