Manaf Meethalavalappu Pallikunhi 2046a24ae1 thermal/core: Add NULL pointer check before using cooling device stats ... There is a possible chance that some cooling device stats buffer allocation fails due to very high cooling device max state value. Later cooling device update sysfs can try to access stats data for the same cooling device. It will lead to NULL pointer dereference issue. Add a NULL pointer check before accessing thermal cooling device stats data. It fixes the following bug [ 26.812833] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004 [ 27.122960] Call trace: [ 27.122963] do_raw_spin_lock+0x18/0xe8 [ 27.122966] _raw_spin_lock+0x24/0x30 [ 27.128157] thermal_cooling_device_stats_update+0x24/0x98 [ 27.128162] cur_state_store+0x88/0xb8 [ 27.128166] dev_attr_store+0x40/0x58 [ 27.128169] sysfs_kf_write+0x50/0x68 [ 27.133358] kernfs_fop_write+0x12c/0x1c8 [ 27.133362] __vfs_write+0x54/0x160 [ 27.152297] vfs_write+0xcc/0x188 [ 27.157132] ksys_write+0x78/0x108 [ 27.162050] ksys_write+0xf8/0x108 [ 27.166968] __arm_smccc_hvc+0x158/0x4b0 [ 27.166973] __arm_smccc_hvc+0x9c/0x4b0 [ 27.186005] el0_svc+0x8/0xc Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/1607367181-24589-1-git-send-email-manafm@codeaurora.org		2021-03-17 09:55:58 +01:00
..
broadcom	thermal: broadcom: simplify the return expression of bcm2711_thermal_probe()	2020-12-10 18:29:43 +01:00
intel	- Use the newly introduced 'hot' and 'critical' ops for the acpi	2021-02-22 09:39:11 -08:00
qcom	thermal: qcom: Fix comparison with uninitialized variable channels_available	2021-02-16 19:05:23 +01:00
samsung	thermal: exynos: Silence warning during deferred probe	2020-03-12 11:56:53 +01:00
st	thermal: stm32: simplify the return expression of stm_thermal_prepare()	2020-10-12 12:08:35 +02:00
tegra	thermal: tegra: Appease the kernel-doc deity	2020-01-27 10:24:32 +01:00
ti-soc-thermal	thermal: ti-soc-thermal: Use non-inverted define for omap4	2021-02-15 21:19:32 +01:00
amlogic_thermal.c	thermal: amlogic: Add hwmon support	2020-11-16 10:30:53 +01:00
armada_thermal.c	thermal: Explicitly enable non-changing thermal zone devices	2020-06-29 20:26:37 +02:00
cpufreq_cooling.c	- Use the newly introduced 'hot' and 'critical' ops for the acpi	2021-02-22 09:39:11 -08:00
cpuidle_cooling.c	thermal/idle_inject: Fix comment of idle_duration_us and name of latency_ns	2020-10-12 12:08:35 +02:00
da9062-thermal.c	thermal/core: Remove ms based delay fields	2021-01-19 22:23:49 +01:00
db8500_thermal.c	thermal: db8500: Depromote debug print	2020-01-27 10:24:32 +01:00
devfreq_cooling.c	thermal/drivers/devfreq_cooling: Fix the build when !ENERGY_MODEL	2020-12-15 17:03:56 +01:00
dove_thermal.c	thermal: Explicitly enable non-changing thermal zone devices	2020-06-29 20:26:37 +02:00
gov_bang_bang.c	thermal: step_wise: Appease the kernel-doc deity	2020-01-27 10:24:32 +01:00
gov_fair_share.c	thermal/governors: Prefix all source files with gov_	2020-05-22 18:48:54 +02:00
gov_power_allocator.c	thermal: power allocator: fail binding for non-power actor devices	2021-01-19 22:31:10 +01:00
gov_step_wise.c	thermal/core: Remove the 'forced_passive' option	2021-01-19 22:22:45 +01:00
gov_user_space.c	thermal/governors: Prefix all source files with gov_	2020-05-22 18:48:54 +02:00
hisi_thermal.c	thermal: Use mode helpers in drivers	2020-06-29 20:26:36 +02:00
imx8mm_thermal.c	thermal: imx8mm: Disable the clock on probe failure	2020-12-04 20:46:03 +01:00
imx_sc_thermal.c	- Add the hwmon support on the i.MX SC (Anson Huang)	2020-06-12 14:10:21 -07:00
imx_thermal.c	thermal: imx: Use dev_err_probe() to simplify error handling	2020-10-12 12:08:34 +02:00
k3_bandgap.c	thermal: k3: Add support for bandgap sensors	2020-04-14 11:41:12 +02:00
Kconfig	thermal/drivers/zx: Remove zx driver	2021-02-03 09:17:47 +01:00
khadas_mcu_fan.c	thermal/core: Make cooling device state change private	2021-01-19 22:31:10 +01:00
kirkwood_thermal.c	thermal: Explicitly enable non-changing thermal zone devices	2020-06-29 20:26:37 +02:00
Makefile	thermal/drivers/zx: Remove zx driver	2021-02-03 09:17:47 +01:00
max77620_thermal.c	thermal: max77620: Appease the kernel-doc deity	2020-01-27 10:24:32 +01:00
mtk_thermal.c	thermal: mtk_thermal: make device_reset optional	2020-10-27 11:19:18 +01:00
qoriq_thermal.c	thermal: qoriq: Update the settings for TMUv2	2020-05-29 20:26:51 +02:00
rcar_gen3_thermal.c	thermal: rcar_gen3_thermal: Add r8a779a0 support	2020-12-08 21:18:01 +01:00
rcar_thermal.c	thermal/drivers/rcar: Remove notification usage	2020-12-15 17:01:55 +01:00
rockchip_thermal.c	thermal: Use mode helpers in drivers	2020-06-29 20:26:36 +02:00
spear_thermal.c	thermal: Explicitly enable non-changing thermal zone devices	2020-06-29 20:26:37 +02:00
sprd_thermal.c	- Add support to enable/disable the thermal zones resulting on core code and	2020-08-06 18:10:55 -07:00
sun8i_thermal.c	thermal: sun8i: Use bitmap API instead of open code	2020-11-12 11:05:12 +01:00
thermal_core.c	thermal/core: Remove pointless thermal_zone_device_reset() function	2021-01-19 22:23:49 +01:00
thermal_core.h	thermal/core: Make cooling device state change private	2021-01-19 22:31:10 +01:00
thermal_helpers.c	thermal/core: Precompute the delays from msecs to jiffies	2021-01-19 22:23:38 +01:00
thermal_hwmon.c	thermal/drivers/hwmon: Cleanup coding style a bit	2020-11-12 11:24:01 +01:00
thermal_hwmon.h	thermal_hwmon: Add devres wrapper for thermal_add_hwmon_sysfs()	2020-01-27 10:24:32 +01:00
thermal_mmio.c
thermal_netlink.c	- Fix Kconfig typo "acces" -> "access" (Colin Ian King)	2020-10-17 10:40:22 -07:00
thermal_netlink.h	thermal: netlink: Improve the initcall ordering	2020-07-21 10:40:08 +02:00
thermal_of.c	thermal: Simplify or eliminate unnecessary set_mode() methods	2020-06-29 20:26:39 +02:00
thermal_sysfs.c	thermal/core: Add NULL pointer check before using cooling device stats	2021-03-17 09:55:58 +01:00
thermal-generic-adc.c	thermal: generic-adc: silence info message for IIO_TEMP channels	2020-01-27 10:24:32 +01:00
uniphier_thermal.c