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linux-stable/drivers/cpufreq
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Aleksandr Mishin 9a185cc5a7 cppc_cpufreq: Fix possible null pointer dereference 
[ Upstream commit cf7de25878 ]

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: a28b2bfc09 ("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
..
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
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Kconfig.x86 cpufreq: sfi-cpufreq: Remove driver for deprecated firmware 2021-02-15 20:04:46 +01:00
Makefile cpufreq: mediatek-hw: Add support for CPUFREQ HW 2021-09-06 15:15:19 +05:30
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
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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-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
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cpufreq-nforce2.c
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cpufreq.c cpufreq: exit() callback is optional 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.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_governor_attr_set.c cpufreq: Move to_gov_attr_set() to cpufreq.h 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
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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
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
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freq_table.c cpufreq: Fix scaling_{available,boost}_frequencies_show() comments 2021-03-26 17:43:48 +01:00
gx-suspmod.c
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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
imx-cpufreq-dt.c cpufreq: Use of_property_present() for testing DT property presence 2024-01-25 14:52:33 -08:00
imx6q-cpufreq.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
kirkwood-cpufreq.c
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longhaul.c cpufreq: Fix fall-through warning for Clang 2021-07-13 11:53:07 -05:00
longhaul.h
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longrun.c
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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
maple-cpufreq.c
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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
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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
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powernow-k6.c
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powernow-k7.c
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powernow-k7.h
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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
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powernv-cpufreq.c powerpc updates for 5.15 2021-09-03 11:22:50 -07:00
ppc_cbe_cpufreq.c cpufreq: Explicitly include correct DT includes 2024-03-26 18:21:16 -04:00
ppc_cbe_cpufreq.h
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ppc_cbe_cpufreq_pervasive.c
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ppc_cbe_cpufreq_pmi.c cpufreq: Explicitly include correct DT includes 2024-03-26 18:21:16 -04:00
pxa2xx-cpufreq.c
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pxa3xx-cpufreq.c
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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
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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
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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
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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
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sparc-us3-cpufreq.c
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spear-cpufreq.c cpufreq: Remove CPUFREQ_STICKY flag 2021-02-04 19:23:20 +01:00
speedstep-centrino.c
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speedstep-ich.c
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speedstep-lib.c cpufreq: speedstep: remove unneeded semicolon 2020-10-28 18:04:07 +01:00
speedstep-lib.h
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speedstep-smi.c
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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
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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