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Aleksandr Mishin 9a185cc5a7 cppc_cpufreq: Fix possible null pointer dereference 
[ Upstream commit cf7de25878a1f4508c69dc9f6819c21ba177dbfe ]

cppc_cpufreq_get_rate() and hisi_cppc_cpufreq_get_rate() can be called from
different places with various parameters. So cpufreq_cpu_get() can return
null as 'policy' in some circumstances.
Fix this bug by adding null return check.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: a28b2bfc099c ("cppc_cpufreq: replace per-cpu data array with a list")
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-06-16 13:39:21 +02:00
..
acpi-cpufreq.c
cpufreq: acpi: Remove acpi_cpufreq_cpu_ready()
2021-09-02 18:04:17 +02:00
amd_freq_sensitivity.c
cpufreq: amd_freq_sensitivity: Add missing pci_dev_put()
2022-12-31 13:14:03 +01:00
armada-8k-cpufreq.c
cpufreq: ap806: Add missing MODULE_DEVICE_TABLE
2020-12-07 13:02:37 +05:30
armada-37xx-cpufreq.c
cpufreq: Explicitly include correct DT includes
2024-03-26 18:21:16 -04:00
bmips-cpufreq.c
cpufreq: Make cpufreq_generic_init() return void
2019-07-16 10:20:11 +02:00
brcmstb-avs-cpufreq.c
cpufreq: brcmstb-avs-cpufreq: fix up "add check for cpufreq_cpu_get's return value"
2024-04-10 16:18:44 +02:00
cppc_cpufreq.c
cppc_cpufreq: Fix possible null pointer dereference
2024-06-16 13:39:21 +02:00
cpufreq_conservative.c
cpufreq: Register governors at core_initcall
2020-07-02 13:03:30 +02:00
cpufreq_governor_attr_set.c
cpufreq: Move to_gov_attr_set() to cpufreq.h
2023-02-01 08:27:29 +01:00
cpufreq_governor.c
cpufreq: governor: Use kobject release() method to free dbs_data
2023-02-01 08:27:29 +01:00
cpufreq_governor.h
cpufreq: governor: Use kobject release() method to free dbs_data
2023-02-01 08:27:29 +01:00
cpufreq_ondemand.c
cpufreq: Replace deprecated CPU-hotplug functions
2021-08-04 20:16:32 +02:00
cpufreq_ondemand.h
…
cpufreq_performance.c
cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET
2020-11-10 18:31:17 +01:00
cpufreq_powersave.c
cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET
2020-11-10 18:31:17 +01:00
cpufreq_stats.c
cpufreq: stats: Fix buffer overflow detection in trans_stats()
2023-11-28 16:56:32 +00:00
cpufreq_userspace.c
cpufreq: Register governors at core_initcall
2020-07-02 13:03:30 +02:00
cpufreq-dt-platdev.c
cpufreq: Use of_property_present() for testing DT property presence
2024-01-25 14:52:33 -08:00
cpufreq-dt.c
cpufreq: dt: always allocate zeroed cpumask
2024-04-10 16:18:43 +02:00
cpufreq-dt.h
cpufreq: dt: Allow platform specific intermediate callbacks
2020-03-12 15:43:52 +05:30
cpufreq-nforce2.c
cpufreq: Avoid creating excessively large stack frames
2020-01-27 10:33:33 +01:00
cpufreq.c
cpufreq: exit() callback is optional
2024-06-16 13:39:21 +02:00
davinci-cpufreq.c
cpufreq: Remove CPUFREQ_STICKY flag
2021-02-04 19:23:20 +01:00
e_powersaver.c
cpufreq: e_powersaver: remove unreachable break
2020-10-27 18:42:54 +01:00
elanfreq.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
freq_table.c
cpufreq: Fix scaling_{available,boost}_frequencies_show() comments
2021-03-26 17:43:48 +01:00
gx-suspmod.c
cpufreq: Avoid creating excessively large stack frames
2020-01-27 10:33:33 +01:00
highbank-cpufreq.c
cpufreq: highbank: Add missing MODULE_DEVICE_TABLE
2020-12-07 13:02:37 +05:30
ia64-acpi-cpufreq.c
ia64: fix format string for ia64-acpi-cpu-freq
2021-03-19 17:26:20 +01:00
imx6q-cpufreq.c
cpufreq: Use of_property_present() for testing DT property presence
2024-01-25 14:52:33 -08:00
imx-cpufreq-dt.c
cpufreq: Use of_property_present() for testing DT property presence
2024-01-25 14:52:33 -08:00
intel_pstate.c
cpufreq: intel_pstate: fix pstate limits enforcement for adjust_perf call back
2024-03-06 14:38:45 +00:00
Kconfig
cpufreq: Kconfig: fix documentation links
2021-04-21 19:00:42 +02:00
Kconfig.arm
cpufreq: mediatek-hw: Add support for CPUFREQ HW
2021-09-06 15:15:19 +05:30
Kconfig.powerpc
cpufreq: Fix Kconfig indentation
2019-11-29 11:52:02 +01:00
Kconfig.x86
cpufreq: sfi-cpufreq: Remove driver for deprecated firmware
2021-02-15 20:04:46 +01:00
kirkwood-cpufreq.c
cpufreq: kirkwood: convert to devm_platform_ioremap_resource
2020-01-07 13:29:58 +05:30
longhaul.c
cpufreq: Fix fall-through warning for Clang
2021-07-13 11:53:07 -05:00
longhaul.h
…
longrun.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
loongson1-cpufreq.c
cpufreq: Remove CPUFREQ_STICKY flag
2021-02-04 19:23:20 +01:00
loongson2_cpufreq.c
cpufreq: loongson2: Remove unused linux/sched.h headers
2021-06-07 17:43:52 +02:00
Makefile
cpufreq: mediatek-hw: Add support for CPUFREQ HW
2021-09-06 15:15:19 +05:30
maple-cpufreq.c
Merge branch 'pm-cpufreq'
2019-07-18 09:49:30 +02:00
mediatek-cpufreq-hw.c
cpufreq: mediatek-hw: Don't error out if supply is not found
2024-03-26 18:21:17 -04:00
mediatek-cpufreq.c
cpufreq: mediatek: Unregister platform device on exit
2022-06-09 10:23:14 +02:00
mvebu-cpufreq.c
…
omap-cpufreq.c
cpufreq: omap: Use .register_em() to register with energy model
2021-08-12 09:54:07 +05:30
p4-clockmod.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
pasemi-cpufreq.c
cpufreq: pasemi: Include header file for {check,restore}_astate prototypes
2020-07-15 15:17:06 +02:00
pcc-cpufreq.c
cpufreq: pcc-cpufreq: Mark sometimes used ID structs as __maybe_unused
2020-07-15 15:17:06 +02:00
pmac32-cpufreq.c
cpufreq: pmac32-cpufreq: Fix refcount leak bug
2022-07-21 21:24:34 +02:00
pmac64-cpufreq.c
Merge branch 'pm-cpufreq'
2019-07-18 09:49:30 +02:00
powernow-k6.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
powernow-k7.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
powernow-k7.h
…
powernow-k8.c
cpufreq: powernow-k8: Use related_cpus instead of cpus in driver.exit()
2023-09-19 12:22:32 +02:00
powernow-k8.h
…
powernv-cpufreq.c
powerpc updates for 5.15
2021-09-03 11:22:50 -07:00
ppc_cbe_cpufreq_pervasive.c
…
ppc_cbe_cpufreq_pmi.c
cpufreq: Explicitly include correct DT includes
2024-03-26 18:21:16 -04:00
ppc_cbe_cpufreq.c
cpufreq: Explicitly include correct DT includes
2024-03-26 18:21:16 -04:00
ppc_cbe_cpufreq.h
cpufreq: powerpc_cbe: Switch to QoS requests for freq limits
2019-08-26 10:02:01 +02:00
pxa2xx-cpufreq.c
…
pxa3xx-cpufreq.c
…
qcom-cpufreq-hw.c
cpufreq: qcom-hw: Fix memory leak in qcom_cpufreq_hw_read_lut()
2022-12-31 13:14:01 +01:00
qcom-cpufreq-nvmem.c
cpufreq: Explicitly include correct DT includes
2024-03-26 18:21:16 -04:00
qoriq-cpufreq.c
drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c
2022-07-07 17:53:33 +02:00
raspberrypi-cpufreq.c
…
s3c24xx-cpufreq-debugfs.c
ARM: s3c: remove cpufreq header dependencies
2020-08-20 17:52:05 +02:00
s3c24xx-cpufreq.c
cpufreq: Remove CPUFREQ_STICKY flag
2021-02-04 19:23:20 +01:00
s3c64xx-cpufreq.c
cpufreq: s3c64xx: Remove pointless NULL check in s3c64xx_cpufreq_driver_init
2019-10-23 08:53:23 +05:30
s3c2410-cpufreq.c
cpufreq: s3c24xx: move low-level clk reg access into platform code
2020-08-20 17:53:22 +02:00
s3c2412-cpufreq.c
cpufreq: s3c24xx: move low-level clk reg access into platform code
2020-08-20 17:53:22 +02:00
s3c2416-cpufreq.c
cpufreq: s3c: fix unbalances of cpufreq policy refcount
2020-01-07 13:31:01 +05:30
s3c2440-cpufreq.c
cpufreq: s3c24xx: move low-level clk reg access into platform code
2020-08-20 17:53:22 +02:00
s5pv210-cpufreq.c
cpufreq: Rudimentary typos fix in the file s5pv210-cpufreq.c
2021-03-22 08:55:41 +05:30
sa1100-cpufreq.c
cpufreq: Remove CPUFREQ_STICKY flag
2021-02-04 19:23:20 +01:00
sa1110-cpufreq.c
cpufreq: Remove CPUFREQ_STICKY flag
2021-02-04 19:23:20 +01:00
sc520_freq.c
cpufreq: sc520_freq: add 'fallthrough' to one case
2021-05-21 18:52:13 +02:00
scmi-cpufreq.c
cpufreq: scmi: process the result of devm_of_clk_add_hw_provider()
2024-01-25 14:52:33 -08:00
scpi-cpufreq.c
cpufreq: Explicitly include correct DT includes
2024-03-26 18:21:16 -04:00
sh-cpufreq.c
cpufreq: sh: Remove sh_cpufreq_cpu_ready()
2021-09-02 18:04:17 +02:00
sparc-us2e-cpufreq.c
…
sparc-us3-cpufreq.c
…
spear-cpufreq.c
cpufreq: Remove CPUFREQ_STICKY flag
2021-02-04 19:23:20 +01:00
speedstep-centrino.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
speedstep-ich.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
speedstep-lib.c
cpufreq: speedstep: remove unneeded semicolon
2020-10-28 18:04:07 +01:00
speedstep-lib.h
…
speedstep-smi.c
cpufreq: Convert to new X86 CPU match macros
2020-03-24 21:31:27 +01:00
sti-cpufreq.c
cpufreq: Explicitly include correct DT includes
2024-03-26 18:21:16 -04:00
sun50i-cpufreq-nvmem.c
cpufreq: fix memory leak in sun50i_cpufreq_nvmem_probe
2022-05-09 09:14:36 +02:00
tegra20-cpufreq.c
cpufreq: Use of_property_present() for testing DT property presence
2024-01-25 14:52:33 -08:00
tegra124-cpufreq.c
cpufreq: tegra124: Add suspend and resume support
2019-10-29 13:25:29 +01:00
tegra186-cpufreq.c
cpufreq: Remove CPUFREQ_STICKY flag
2021-02-04 19:23:20 +01:00
tegra194-cpufreq.c
cpufreq: Remove CPUFREQ_STICKY flag
2021-02-04 19:23:20 +01:00
ti-cpufreq.c
cpufreq: Explicitly include correct DT includes
2024-03-26 18:21:16 -04:00
vexpress-spc-cpufreq.c
cpufreq: Explicitly include correct DT includes
2024-03-26 18:21:16 -04:00