Manaf Meethalavalappu Pallikunhi 1e2a75c24a thermal/core: Add NULL pointer check before using cooling device stats ... [ Upstream commit 2046a24ae1 ] 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 Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-04-07 15:00:06 +02:00
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broadcom
intel	thermal: int340x: Add keep alive response method	2020-10-12 12:08:36 +02:00
qcom	- Fix bogus thermal shutdowns for omap4430 where bogus values	2020-09-04 12:49:03 -07:00
samsung
st	thermal: stm32: simplify the return expression of stm_thermal_prepare()	2020-10-12 12:08:35 +02:00
tegra
ti-soc-thermal	thermal: ti-soc-thermal: Disable the CPU PM notifier for OMAP4430	2020-11-12 12:30:29 +01:00
amlogic_thermal.c
armada_thermal.c
cpufreq_cooling.c	thermal: cpufreq_cooling: freq_qos_update_request() returns < 0 on error	2021-03-04 11:38:41 +01:00
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
db8500_thermal.c
devfreq_cooling.c	thermal: cooling: Remove unused variable *tz	2020-10-12 12:08:36 +02:00
dove_thermal.c
gov_bang_bang.c
gov_fair_share.c
gov_power_allocator.c	thermal: cooling: Remove unused variable *tz	2020-10-12 12:08:36 +02:00
gov_step_wise.c
gov_user_space.c
hisi_thermal.c
imx_sc_thermal.c
imx_thermal.c	thermal: imx: Use dev_err_probe() to simplify error handling	2020-10-12 12:08:34 +02:00
imx8mm_thermal.c	thermal: imx8mm: Use dev_err_probe() to simplify error handling	2020-10-12 12:08:35 +02:00
k3_bandgap.c
Kconfig	thermal: Kconfig: Update description for RCAR_GEN3_THERMAL config	2020-10-12 12:08:35 +02:00
khadas_mcu_fan.c
kirkwood_thermal.c
Makefile	- Core Frameworks	2020-08-15 08:09:38 -07:00
max77620_thermal.c
mtk_thermal.c	- Add support to enable/disable the thermal zones resulting on core code and	2020-08-06 18:10:55 -07:00
qoriq_thermal.c
rcar_gen3_thermal.c	- Add support to enable/disable the thermal zones resulting on core code and	2020-08-06 18:10:55 -07:00
rcar_thermal.c	thermal: rcar_thermal: Add missing braces to conditional statement	2020-10-12 12:08:35 +02:00
rockchip_thermal.c
spear_thermal.c
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: Add A100's THS controller support	2020-10-12 12:08:36 +02:00
tango_thermal.c
thermal_core.c	thermal: cooling: Remove unused variable *tz	2020-10-12 12:08:36 +02:00
thermal_core.h	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
thermal_helpers.c
thermal_hwmon.c
thermal_hwmon.h
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_sysfs.c	thermal/core: Add NULL pointer check before using cooling device stats	2021-04-07 15:00:06 +02:00
thermal-generic-adc.c
uniphier_thermal.c
zx2967_thermal.c