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
..
accessibility	Char/Misc driver patches for 5.12-rc1	2021-02-24 10:25:37 -08:00
acpi	Additional ACPI updates for v5.12-rc1	2021-02-25 12:03:13 -08:00
amba
android
ata
atm	atm: idt77252: fix build broken on amd64	2021-02-15 12:36:27 -08:00
auxdisplay	treewide: Miguel has moved	2021-02-26 09:41:03 -08:00
base	PM: runtime: Update device status before letting suppliers suspend	2021-03-01 17:40:38 +01:00
bcma
block	rsxx: Return -EFAULT if copy_to_user() fails	2021-03-03 06:48:44 -07:00
bluetooth	TTY/Serial driver changes for 5.12-rc1	2021-02-20 21:28:04 -08:00
bus	Char/Misc driver patches for 5.12-rc1	2021-02-24 10:25:37 -08:00
cdrom
char	tpmdd updates for Linux v5.12-rc2	2021-03-04 12:51:57 -08:00
clk	RISC-V Patches for the 5.12 Merge Window	2021-02-26 10:28:35 -08:00
clocksource	A small set of clockevent fixes which fell through the cracks	2021-02-22 14:11:36 -08:00
connector
counter
cpufreq	Simple Firmware Interface (SFI) support removal for v5.12-rc1	2021-02-24 10:35:29 -08:00
cpuidle
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2021-02-21 17:23:56 -08:00
cxl	cxl/mem: Fix potential memory leak	2021-02-22 14:44:39 -08:00
dax	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-02-27 08:07:12 -08:00
dca
devfreq	Merge branches 'pm-devfreq' and 'pm-tools'	2021-02-15 17:02:04 +01:00
dio
dma	dmaengine updates for v5.12-rc1	2021-02-23 15:05:10 -08:00
dma-buf	dma-fence: allow signaling drivers to set fence timestamp	2021-02-24 21:05:28 +05:30
edac	Merge branch 'edac-misc' into edac-updates-for-v5.12	2021-02-15 10:06:58 +01:00
eisa
extcon
firewire
firmware	Char/Misc driver patches for 5.12-rc1	2021-02-24 10:25:37 -08:00
fpga
fsi
gnss
gpio	Driver core / debugfs update for 5.12-rc1	2021-02-24 10:13:55 -08:00
gpu	Merge tag 'amd-drm-fixes-5.12-2021-03-03' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes	2021-03-05 11:13:22 +10:00
greybus
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid	2021-02-23 14:52:22 -08:00
hsi
hv	mm/memory_hotplug: MEMHP_MERGE_RESOURCE -> MHP_MERGE_RESOURCE	2021-02-26 09:41:00 -08:00
hwmon	Devicetree updates for v5.12:	2021-02-22 10:05:12 -08:00
hwspinlock
hwtracing	ARM updates for 5.12-rc1:	2021-02-22 14:27:07 -08:00
i2c	i2c: exynos5: Preserve high speed master code	2021-02-26 11:47:42 +01:00
i3c	I3C for 5.12	2021-02-22 09:52:55 -08:00
ide	ide-5.11-2021-02-28	2021-02-28 15:48:25 -08:00
idle
iio	- Use the newly introduced 'hot' and 'critical' ops for the acpi	2021-02-22 09:39:11 -08:00
infiniband	RDMA/rxe: Fix errant WARN_ONCE in rxe_completer()	2021-03-05 14:15:22 -04:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2021-02-23 14:56:23 -08:00
interconnect
iommu	IOMMU Fixes for Linux v5.12-rc1	2021-03-05 12:26:24 -08:00
ipack
irqchip	irqchip updates for Linux 5.12:	2021-02-15 15:41:56 +01:00
isdn
leds	Updates for 5.12-rc1. Besides usual fixes and new drivers, we are	2021-02-26 13:56:40 -08:00
lightnvm	lightnvm: pblk: Replace guid_copy() with export_guid()/import_guid()	2021-02-14 21:27:24 -07:00
macintosh
mailbox	mailbox: arm_mhuv2: Skip calling kfree() with invalid pointer	2021-02-22 13:34:27 -06:00
mcb
md	Fix DM verity target's optional Forward Error Correction (FEC) for	2021-03-05 13:25:23 -08:00
media	Fixes around VM_FPNMAP and follow_pfn	2021-02-22 17:45:02 -08:00
memory	Char/Misc driver patches for 5.12-rc1	2021-02-24 10:25:37 -08:00
memstick
message
mfd	Simple Firmware Interface (SFI) support removal for v5.12-rc1	2021-02-24 10:35:29 -08:00
misc	pci-v5.12-changes	2021-02-25 09:56:08 -08:00
mmc	Merge branch 'stable/for-linus-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb	2021-02-26 13:59:32 -08:00
most
mtd	This pull request contains changes (actually just fixes) for UBIFS	2021-02-21 13:57:08 -08:00
mux
net	xen: branch for v5.12-rc2	2021-03-04 11:24:47 -08:00
nfc	Char/Misc driver patches for 5.12-rc1	2021-02-24 10:25:37 -08:00
ntb	NTB: Add support for EPF PCI Non-Transparent Bridge	2021-02-23 14:12:53 -06:00
nubus
nvdimm	libnvdimm + device-dax for 5.12	2021-02-24 09:35:54 -08:00
nvme	nvmet: model_number must be immutable once set	2021-03-05 13:41:03 +01:00
nvmem
of	Char/Misc driver patches for 5.12-rc1	2021-02-24 10:25:37 -08:00
opp	opp: Don't skip freq update for different frequency	2021-02-18 12:31:08 +05:30
parisc
parport
pci	pci-v5.12-changes	2021-02-25 09:56:08 -08:00
pcmcia	Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux	2021-02-26 13:54:43 -08:00
perf	IOMMU Updates for Linux v5.12	2021-02-22 10:31:29 -08:00
phy
pinctrl	RISC-V Patches for the 5.12 Merge Window	2021-02-26 10:28:35 -08:00
platform	Additional ACPI updates for v5.12-rc1	2021-02-25 12:03:13 -08:00
pnp
power
powercap	powercap/drivers/dtpm: Add the experimental label to the option description	2021-03-01 17:43:29 +01:00
pps
ps3
ptp	ptp: ptp_clockmatrix: clean-up - parenthesis around a == b are unnecessary	2021-02-17 13:49:26 -08:00
pwm	pwm: Changes for v5.12-rc1	2021-02-25 12:23:49 -08:00
rapidio
ras
regulator	- Core Frameworks	2021-02-22 09:29:42 -08:00
remoteproc	remoteproc: qcom: pas: Add SM8350 PAS remoteprocs	2021-02-11 12:52:18 -06:00
reset	RISC-V Patches for the 5.12 Merge Window	2021-02-26 10:28:35 -08:00
rpmsg
rtc	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-02-27 08:07:12 -08:00
s390	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-02-27 08:07:12 -08:00
sbus
scsi	scsi: iscsi: Verify lengths on passthrough PDUs	2021-03-04 20:09:51 -05:00
sh
siox
slimbus
soc	OpenRISC updates for 5.12	2021-02-26 14:16:06 -08:00
soundwire	ALSA: hda: move Intel SoundWire ACPI scan to dedicated module	2021-03-02 15:33:00 +01:00
spi	powerpc updates for 5.12	2021-02-22 14:34:00 -08:00
spmi	spmi: spmi-pmic-arb: Fix hw_irq overflow	2021-02-12 12:26:46 +01:00
ssb
staging	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-02-27 08:07:12 -08:00
target	SCSI misc on 20210228	2021-02-28 11:51:20 -08:00
tc
tee
thermal	thermal/core: Add NULL pointer check before using cooling device stats	2021-03-17 09:55:58 +01:00
thunderbolt
tty	Char/Misc driver patches for 5.12-rc1	2021-02-24 10:25:37 -08:00
uio
usb	Kbuild updates for v5.12	2021-02-25 10:17:31 -08:00
vdpa	vdpa/mlx5: fix param validation in mlx5_vdpa_get_config()	2021-02-23 07:52:59 -05:00
vfio	VFIO updates for v5.12-rc1	2021-02-24 10:43:40 -08:00
vhost	virtio: features, fixes	2021-02-25 12:21:08 -08:00
video	drm fixes for 5.12-rc1 + msm-next	2021-02-25 12:10:22 -08:00
virt
virtio	Merge branch 'akpm' (patches from Andrew)	2021-02-26 09:50:09 -08:00
visorbus
vlynq
vme
w1
watchdog	Char/Misc driver patches for 5.12-rc1	2021-02-24 10:25:37 -08:00
xen	xen: branch for v5.12-rc1	2021-02-26 10:04:45 -08:00
zorro
Kconfig	cxl/mem: Introduce a driver for CXL-2.0-Type-3 endpoints	2021-02-16 20:36:38 -08:00
Makefile	Simple Firmware Interface (SFI) support removal for v5.12-rc1	2021-02-24 10:35:29 -08:00