Christian Marangi d3f1a2c438 cpufreq: stats: Fix buffer overflow detection in trans_stats() ... commit ea167a7fc2 upstream. Commit 3c0897c180 ("cpufreq: Use scnprintf() for avoiding potential buffer overflow") switched from snprintf to the more secure scnprintf but never updated the exit condition for PAGE_SIZE. As the commit say and as scnprintf document, what scnprintf returns what is actually written not counting the '\0' end char. This results in the case of len exceeding the size, len set to PAGE_SIZE - 1, as it can be written at max PAGE_SIZE - 1 (as '\0' is not counted) Because of len is never set to PAGE_SIZE, the function never break early, never prints the warning and never return -EFBIG. Fix this by changing the condition to PAGE_SIZE - 1 to correctly trigger the error. Cc: 5.10+ <stable@vger.kernel.org> # 5.10+ Fixes: 3c0897c180 ("cpufreq: Use scnprintf() for avoiding potential buffer overflow") Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-11-28 17:15:03 +00:00
..
acpi-cpufreq.c	cpufreq: ACPI: Prevent a warning when another frequency driver is loaded	2023-05-15 19:59:29 +02:00
amd_freq_sensitivity.c	cpufreq: amd_freq_sensitivity: Add missing pci_dev_put()	2022-11-30 19:50:04 +01:00
amd-pstate-trace.c	cpufreq: amd-pstate: Add trace for AMD P-State module	2021-12-30 18:51:39 +01:00
amd-pstate-trace.h	cpufreq: amd-pstate: Add more tracepoint for AMD P-State module	2022-03-09 19:53:01 +01:00
amd-pstate-ut.c	cpufreq: amd-pstate-ut: Fix kernel panic when loading the driver	2023-09-13 09:53:01 +02:00
amd-pstate.c	cpufreq: amd-pstate: fix global sysfs attribute type	2023-08-07 19:41:48 +02:00
apple-soc-cpufreq.c	cpufreq: apple-soc: Fix an IS_ERR() vs NULL check	2023-03-01 19:34:54 +01:00
armada-8k-cpufreq.c	cpufreq: armada-8k: add ap807 support	2023-06-19 09:50:31 +05:30
armada-37xx-cpufreq.c	cpufreq: armada-37xx: stop using 0 as NULL pointer	2023-01-10 09:32:03 +05:30
bmips-cpufreq.c	cpufreq: bmips-cpufreq: Use module_init and add module_exit	2022-08-30 13:49:23 +05:30
brcmstb-avs-cpufreq.c	cpufreq: brcmstb-avs-cpufreq: Fix -Warray-bounds bug	2023-09-13 09:53:56 +02:00
cppc_cpufreq.c	cpufreq: CPPC: Add u64 casts to avoid overflowing	2022-12-27 08:27:14 +05:30
cpufreq_conservative.c	cpufreq: unify show() and store() naming and use __ATTR_XX	2022-03-10 19:55:05 +01:00
cpufreq_governor_attr_set.c	cpufreq: Move to_gov_attr_set() to cpufreq.h	2022-02-04 19:22:34 +01:00
cpufreq_governor.c	cpufreq: governor: Use kobject release() method to free dbs_data	2022-04-13 15:22:41 +02:00
cpufreq_governor.h	cpufreq: governor: Use kobject release() method to free dbs_data	2022-04-13 15:22:41 +02:00
cpufreq_ondemand.c	cpufreq: ondemand: Use cpumask_var_t for on-stack cpu mask	2022-07-25 20:38:01 +02:00
cpufreq_ondemand.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
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 17:15:03 +00:00
cpufreq_userspace.c	cpufreq: Register governors at core_initcall	2020-07-02 13:03:30 +02:00
cpufreq-dt-platdev.c	cpufreq: dt-platdev: Support building as module	2023-06-05 16:33:05 +05:30
cpufreq-dt.c	cpufreq: dt: Switch to use dev_err_probe() helper	2022-10-18 16:22:25 +05:30
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: Fix the race condition while updating the transition_task of policy	2023-09-13 09:53:48 +02:00
davinci-cpufreq.c	cpufreq: davinci: Fix clk use after free	2023-02-09 20:26:42 +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	Updates for 6.4	2023-04-20 19:30:01 +02:00
gx-suspmod.c	cpufreq: Avoid creating excessively large stack frames	2020-01-27 10:33:33 +01:00
highbank-cpufreq.c	cpufreq: Add __init annotation to module init funcs	2022-09-26 11:15:04 +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: imx6q: don't warn for disabling a non-existing frequency	2023-05-15 14:42:33 +05:30
imx-cpufreq-dt.c	cpufreq: Use of_property_present() for testing DT property presence	2023-03-13 09:58:11 +05:30
intel_pstate.c	cpufreq: intel_pstate: set stale CPU frequency to minimum	2023-09-13 09:52:57 +02:00
Kconfig	cpufreq: Make CONFIG_CPUFREQ_DT_PLATDEV depend on OF	2023-06-30 09:43:43 +02:00
Kconfig.arm	cpufreq: Fix typo in the ARM_BRCMSTB_AVS_CPUFREQ Kconfig entry	2023-03-22 20:14:37 +01:00
Kconfig.powerpc	cpufreq: Fix Kconfig indentation	2019-11-29 11:52:02 +01:00
Kconfig.x86	cpufreq: amd-pstate: Add a kernel config option to set default mode	2023-06-21 18:44:56 +02:00
kirkwood-cpufreq.c	cpufreq: Adjust includes to remove of_device.h	2023-04-13 17:46:35 -05:00
longhaul.c	cpufreq: longhaul: Make array speeds static const	2022-11-03 19:13:34 +01:00
longhaul.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
longrun.c	cpufreq: Convert to new X86 CPU match macros	2020-03-24 21:31:27 +01:00
loongson2_cpufreq.c	cpufreq: loongson2: Remove unused linux/sched.h headers	2021-06-07 17:43:52 +02:00
Makefile	Power management updates for 6.3-rc1	2023-02-21 12:13:58 -08:00
maple-cpufreq.c	cpufreq: Adjust includes to remove of_device.h	2023-04-13 17:46:35 -05:00
mediatek-cpufreq-hw.c	Cpufreq arm updates for 6.3	2023-02-14 15:25:07 +01:00
mediatek-cpufreq.c	cpufreq: mediatek: correct voltages for MT7622 and MT7623	2023-06-19 09:53:28 +05:30
mvebu-cpufreq.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2)	2022-06-10 14:51:35 +02:00
omap-cpufreq.c	cpufreq: Make cpufreq_unregister_driver() return void	2023-02-09 20:19:18 +01:00
p4-clockmod.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
pasemi-cpufreq.c	cpufreq: Prepare cleanup of powerpc's asm/prom.h	2022-04-13 17:18:45 +02:00
pcc-cpufreq.c	cpufreq: ACPI: Prevent a warning when another frequency driver is loaded	2023-05-15 19:59:29 +02:00
pmac32-cpufreq.c	Devicetree updates for v6.4, part 2:	2023-04-27 10:09:05 -07:00
pmac64-cpufreq.c	cpufreq: Adjust includes to remove of_device.h	2023-04-13 17:46:35 -05:00
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	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
powernow-k8.c	cpufreq: powernow-k8: Use related_cpus instead of cpus in driver.exit()	2023-09-13 09:53:01 +02:00
powernow-k8.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 347	2019-06-05 17:37:08 +02:00
powernv-cpufreq.c	cpufreq: Introducing CPUFREQ_RELATION_E	2021-10-05 16:33:05 +02:00
ppc_cbe_cpufreq_pervasive.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 153	2019-05-30 11:26:32 -07:00
ppc_cbe_cpufreq_pmi.c	cpufreq: Prepare cleanup of powerpc's asm/prom.h	2022-04-13 17:18:45 +02:00
ppc_cbe_cpufreq.c	cpufreq: Prepare cleanup of powerpc's asm/prom.h	2022-04-13 17:18:45 +02:00
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	cpufreq: pxa3: move clk register access to clk driver	2022-05-07 22:55:49 +02:00
pxa3xx-cpufreq.c	cpufreq: pxa3: move clk register access to clk driver	2022-05-07 22:55:49 +02:00
qcom-cpufreq-hw.c	cpufreq: qcom-cpufreq-hw: Use dev_err_probe() when failing to get icc paths	2023-06-26 12:09:47 +05:30
qcom-cpufreq-nvmem.c	cpufreq: qcom-nvmem: use helper to get SMEM SoC ID	2023-05-26 18:18:57 -07:00
qoriq-cpufreq.c	drivers: cpufreq: Add missing of_node_put() in qoriq-cpufreq.c	2022-06-28 13:34:45 +05:30
raspberrypi-cpufreq.c	cpufreq: add driver for Raspberry Pi	2019-06-13 08:58:22 +05:30
s3c64xx-cpufreq.c	cpufreq: s3c64xx: Remove pointless NULL check in s3c64xx_cpufreq_driver_init	2019-10-23 08:53:23 +05:30
s5pv210-cpufreq.c	cpufreq: Introducing CPUFREQ_RELATION_E	2021-10-05 16:33:05 +02:00
sa1110-cpufreq.c	ARM: sa1100: remove unused board files	2023-01-12 10:53:12 +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: Use of_property_present() for testing DT property presence	2023-03-13 09:58:11 +05:30
scpi-cpufreq.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_320.RULE	2022-06-10 14:51:36 +02:00
sh-cpufreq.c	cpufreq: sh: Remove sh_cpufreq_cpu_ready()	2021-09-02 18:04:17 +02:00
sparc-us2e-cpufreq.c	cpufreq: sparc: Don't mark cpufreq callbacks with __init	2023-07-12 12:45:18 +02:00
sparc-us3-cpufreq.c	cpufreq: sparc: Don't mark cpufreq callbacks with __init	2023-07-12 12:45:18 +02:00
spear-cpufreq.c	cpufreq: Adjust includes to remove of_device.h	2023-04-13 17:46:35 -05:00
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	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166	2019-05-30 11:26:39 -07:00
speedstep-smi.c	cpufreq: Convert to new X86 CPU match macros	2020-03-24 21:31:27 +01:00
sti-cpufreq.c	cpufreq: Add __init annotation to module init funcs	2022-09-26 11:15:04 +05:30
sun50i-cpufreq-nvmem.c	cpufreq: sun50i: Add explicit include for cpu.h	2023-04-13 17:46:35 -05:00
tegra20-cpufreq.c	Devicetree updates for v6.4, part 2:	2023-04-27 10:09:05 -07:00
tegra124-cpufreq.c	Devicetree updates for v6.4, part 2:	2023-04-27 10:09:05 -07:00
tegra186-cpufreq.c	cpufreq: tegra186: Use flexible array to simplify memory allocation	2022-12-01 14:49:50 +05:30
tegra194-cpufreq.c	cpufreq: tegra194: fix warning due to missing opp_put	2023-11-20 11:56:48 +01:00
ti-cpufreq.c	cpufreq: ti-cpufreq: Add support for AM62A7	2023-05-29 10:33:59 +05:30
vexpress-spc-cpufreq.c	cpufreq: vexpress: Drop unused variable	2021-10-04 11:25:21 +05:30