Yi Zeng d8ccbd1691 thermal: power_allocator: fix one race condition issue for thermal_instances list ... [ Upstream commit a5de11d67d ] When invoking allow_maximum_power and traverse tz->thermal_instances, we should grab thermal_zone_device->lock to avoid race condition. For example, during the system reboot, if the mali GPU device implements device shutdown callback and unregister GPU devfreq cooling device, the deleted list head may be accessed to cause panic, as the following log shows: [ 33.551070] c3 25 (kworker/3:0) Unable to handle kernel paging request at virtual address dead000000000070 [ 33.566708] c3 25 (kworker/3:0) pgd = ffffffc0ed290000 [ 33.572071] c3 25 (kworker/3:0) [dead000000000070] *pgd=00000001ed292003, *pud=00000001ed292003, *pmd=0000000000000000 [ 33.581515] c3 25 (kworker/3:0) Internal error: Oops: 96000004 [#1] PREEMPT SMP [ 33.599761] c3 25 (kworker/3:0) CPU: 3 PID: 25 Comm: kworker/3:0 Not tainted 4.4.35+ #912 [ 33.614137] c3 25 (kworker/3:0) Workqueue: events_freezable thermal_zone_device_check [ 33.620245] c3 25 (kworker/3:0) task: ffffffc0f32e4200 ti: ffffffc0f32f0000 task.ti: ffffffc0f32f0000 [ 33.629466] c3 25 (kworker/3:0) PC is at power_allocator_throttle+0x7c8/0x8a4 [ 33.636609] c3 25 (kworker/3:0) LR is at power_allocator_throttle+0x808/0x8a4 [ 33.643742] c3 25 (kworker/3:0) pc : [<ffffff8008683dd0>] lr : [<ffffff8008683e10>] pstate: 20000145 [ 33.652874] c3 25 (kworker/3:0) sp : ffffffc0f32f3bb0 [ 34.468519] c3 25 (kworker/3:0) Process kworker/3:0 (pid: 25, stack limit = 0xffffffc0f32f0020) [ 34.477220] c3 25 (kworker/3:0) Stack: (0xffffffc0f32f3bb0 to 0xffffffc0f32f4000) [ 34.819822] c3 25 (kworker/3:0) Call trace: [ 34.824021] c3 25 (kworker/3:0) Exception stack(0xffffffc0f32f39c0 to 0xffffffc0f32f3af0) [ 34.924993] c3 25 (kworker/3:0) [<ffffff8008683dd0>] power_allocator_throttle+0x7c8/0x8a4 [ 34.933184] c3 25 (kworker/3:0) [<ffffff80086807f4>] handle_thermal_trip.part.25+0x70/0x224 [ 34.941545] c3 25 (kworker/3:0) [<ffffff8008680a68>] thermal_zone_device_update+0xc0/0x20c [ 34.949818] c3 25 (kworker/3:0) [<ffffff8008680bd4>] thermal_zone_device_check+0x20/0x2c [ 34.957924] c3 25 (kworker/3:0) [<ffffff80080b93a4>] process_one_work+0x168/0x458 [ 34.965414] c3 25 (kworker/3:0) [<ffffff80080ba068>] worker_thread+0x13c/0x4b4 [ 34.972650] c3 25 (kworker/3:0) [<ffffff80080c0a4c>] kthread+0xe8/0xfc [ 34.979187] c3 25 (kworker/3:0) [<ffffff8008084e90>] ret_from_fork+0x10/0x40 [ 34.986244] c3 25 (kworker/3:0) Code: f9405e73 eb1302bf d102e273 54ffc460 (b9402a61) [ 34.994339] c3 25 (kworker/3:0) ---[ end trace 32057901e3b7e1db ]--- Signed-off-by: Yi Zeng <yizeng@asrmicro.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-04-13 19:50:12 +02:00
..
accessibility
acpi	ACPI, PCI, irq: remove redundant check for null string pointer	2018-04-08 11:51:56 +02:00
amba
android	binder: add missing binder_unlock()	2018-02-28 10:17:23 +01:00
ata	ata: libahci: properly propagate return value of platform_get_irq()	2018-04-13 19:50:06 +02:00
atm	atm: horizon: Fix irq release error	2017-12-16 10:33:55 +01:00
auxdisplay
base	drivers: base: cacheinfo: fix boot error message when acpi is enabled	2018-01-31 12:06:08 +01:00
bcma
block	Revert "mtip32xx: use runtime tag to initialize command header"	2018-04-08 11:52:02 +02:00
bluetooth	Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174	2018-03-28 18:40:13 +02:00
bus	bus: brcmstb_gisb: correct support for 64-bit address output	2018-04-13 19:50:05 +02:00
cdrom
char	fix race in drivers/char/random.c:get_reg()	2018-04-13 19:50:11 +02:00
clk	clk: bcm2835: Protect sections updating shared registers	2018-03-28 18:40:13 +02:00
clocksource	clockevents/drivers/cs5535: Improve resilience to spurious interrupts	2017-10-27 10:23:17 +02:00
connector
cpufreq	Revert "cpufreq: Fix governor module removal race"	2018-04-08 11:52:02 +02:00
cpuidle	cpuidle: fix broadcast control when broadcast can not be entered	2017-12-25 14:22:15 +01:00
crypto	crypto: s5p-sss - Fix kernel Oops in AES-ECB mode	2018-02-25 11:03:55 +01:00
dca
devfreq	PM / devfreq: Propagate error from devfreq_add_device()	2018-02-22 15:44:58 +01:00
dio
dma	dmaengine: ti-dma-crossbar: Fix event mapping for TPCC_EVT_MUX_60_63	2018-03-24 10:58:48 +01:00
dma-buf
edac	EDAC, octeon: Fix an uninitialized variable warning	2018-02-16 20:09:47 +01:00
eisa
extcon	extcon: palmas: Check the parent instance to prevent the NULL	2017-11-21 09:21:18 +01:00
firewire
firmware	efi/esrt: Cleanup bad memory map log messages	2017-12-20 10:04:56 +01:00
fmc
fpga
gpio	gpio: xgene: mark PM functions as __maybe_unused	2018-02-25 11:03:50 +01:00
gpu	drm: udl: Properly check framebuffer mmap offsets	2018-03-28 18:40:15 +02:00
hid	HID: elo: clear BTN_LEFT mapping	2018-03-22 09:23:27 +01:00
hsi	HSI: ssi_protocol: double free in ssip_pn_xmit()	2018-03-24 10:58:42 +01:00
hv	Drivers: hv: vmbus: fix build warning	2018-02-25 11:03:46 +01:00
hwmon	driver: (adm1275) set the m,b and R coefficients correctly for power	2018-03-22 09:23:22 +01:00
hwspinlock
hwtracing	coresight: Fix disabling of CoreSight TPIU	2018-03-24 10:58:48 +01:00
i2c	i2c: i2c-scmi: add a MS HID	2018-03-24 10:58:41 +01:00
ide
idle	idle: i7300: add PCI dependency	2018-02-25 11:03:51 +01:00
iio	iio: hi8435: cleanup reset gpio	2018-04-13 19:50:08 +02:00
infiniband	IB/srpt: Fix abort handling	2018-04-13 19:50:01 +02:00
input	Input: elan_i2c - clear INT before resetting controller	2018-04-13 19:50:11 +02:00
iommu	iommu/vt-d: clean up pr_irq if request_threaded_irq fails	2018-03-24 10:58:48 +01:00
ipack
irqchip	irqchip/gic-v3-its: Ensure nr_ites >= nr_lpis	2018-03-22 09:23:31 +01:00
isdn	isdn: sc: work around type mismatch warning	2018-02-25 11:03:51 +01:00
leds	leds: pca955x: Correct I2C Functionality	2018-04-13 19:50:09 +02:00
lguest
lightnvm
macintosh
mailbox	mailbox: handle empty message in tx_tick	2017-08-06 19:19:41 -07:00
mcb
md	md-cluster: fix potential lock issue in add_new_disk	2018-04-13 19:50:09 +02:00
media	media: usbtv: prevent double free in error case	2018-04-08 11:52:00 +02:00
memory	ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure	2017-12-16 10:33:51 +01:00
memstick
message	mptfusion: hide unused seq_mpt_print_ioc_summary function	2018-02-25 11:03:45 +01:00
mfd	mfd: palmas: Reset the POWERHOLD mux during power off	2018-03-24 10:58:44 +01:00
misc	drivers/misc/vmw_vmci/vmci_queue_pair.c: fix a couple integer overflow tests	2018-04-13 19:50:02 +02:00
mmc	mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs	2018-03-28 18:40:13 +02:00
mtd	mtd: jedec_probe: Fix crash in jedec_read_mfr()	2018-04-08 11:51:55 +02:00
net	bonding: Don't update slave->link until ready to commit	2018-04-13 19:50:12 +02:00
nfc	NFC: nfcmrvl: double free on error path	2018-03-22 09:23:23 +01:00
ntb	ntb_transport: fix bug calculating num_qps_mw	2017-08-30 10:19:29 +02:00
nubus
nvdimm	libnvdimm, namespace: make 'resource' attribute only readable by root	2017-11-30 08:37:23 +00:00
nvme	nvme: Fix managing degraded controllers	2018-02-16 20:09:47 +01:00
nvmem	nvmem: imx-ocotp: Fix wrong register size	2017-08-06 19:19:46 -07:00
of	of: fix of_device_get_modalias returned length when truncating buffers	2018-03-22 09:23:21 +01:00
oprofile
parisc	parisc: Hide Diva-built-in serial aux and graphics card	2018-01-02 20:33:20 +01:00
parport	parport_pc: Add support for WCH CH382L PCI-E single parallel port card.	2018-04-08 11:52:00 +02:00
pci	Revert "PCI/MSI: Stop disabling MSI/MSI-X in pci_device_shutdown()"	2018-04-08 11:52:01 +02:00
pcmcia
perf	drivers/perf: arm_pmu: handle no platform_device	2018-03-22 09:23:26 +01:00
phy	phy: work around 'phys' references to usb-nop-xceiv devices	2018-01-23 19:50:16 +01:00
pinctrl	pinctrl: Really force states during suspend/resume	2018-03-24 10:58:48 +01:00
platform	platform/chrome: Use proper protocol transfer function	2018-03-24 10:58:47 +01:00
pnp
power	power: supply: pda_power: move from timer to delayed_work	2018-03-24 10:58:45 +01:00
powercap	PowerCap: Fix an error code in powercap_register_zone()	2018-04-13 19:50:05 +02:00
pps
ps3
ptp	time: Change posix clocks ops interfaces to use timespec64	2018-03-24 10:58:40 +01:00
pwm	pwm: tegra: Increase precision in PWM rate calculation	2018-03-22 09:23:27 +01:00
rapidio
ras
regulator	regulator: anatop: set default voltage selector for pcie	2018-03-24 10:58:40 +01:00
remoteproc
reset
rpmsg
rtc	rtc: snvs: fix an incorrect check of return value	2018-04-13 19:50:01 +02:00
s390	s390/qeth: on channel error, reject further cmd requests	2018-03-31 18:12:34 +02:00
sbus
scsi	scsi: bnx2fc: fix race condition in bnx2fc_get_host_stats()	2018-04-13 19:50:11 +02:00
sfi
sh
sn
soc
spi	spi: davinci: fix up dma_mapping_error() incorrect patch	2018-04-08 11:52:02 +02:00
spmi	spmi: Include OF based modalias in device uevent	2017-07-27 15:06:10 -07:00
ssb	ssb: mark ssb_bus_register as __maybe_unused	2018-02-25 11:03:44 +01:00
staging	staging: wlan-ng: prism2mgmt.c: fixed a double endian conversion before calling hfa384x_drvr_setconfig16, also fixes relative sparse warning	2018-04-13 19:50:05 +02:00
target	tcm_fileio: Prevent information leak for short reads	2018-03-24 10:58:45 +01:00
tc
thermal	thermal: power_allocator: fix one race condition issue for thermal_instances list	2018-04-13 19:50:12 +02:00
thunderbolt
tty	serial: sh-sci: Fix race condition causing garbage during shutdown	2018-04-13 19:50:07 +02:00
uio
usb	USB: ene_usb6250: fix SCSI residue overwriting	2018-04-13 19:50:07 +02:00
uwb	uwb: ensure that endpoint is interrupt	2017-10-12 11:27:35 +02:00
vfio	vfio-pci: Handle error from pci_iomap	2017-08-06 19:19:46 -07:00
vhost	vhost_net: stop device during reset owner	2018-02-16 20:09:38 +01:00
video	vgacon: Set VGA struct resource types	2018-03-24 10:58:48 +01:00
virt
virtio	virtio_balloon: prevent uninitialized variable use	2018-02-25 11:03:42 +01:00
vlynq
vme
w1
watchdog	watchdog: hpwdt: fix unused variable warning	2018-03-18 11:17:50 +01:00
xen	xen/gntdev: Fix partial gntdev_mmap() cleanup	2018-03-03 10:19:45 +01:00
zorro
Kconfig
Makefile	usb: build drivers/usb/common/ when USB_SUPPORT is set	2018-02-25 11:03:38 +01:00