Sultan Alsawaf 1b37d68f4c ANDROID: Fix massive cpufreq_times memory leaks ... Every time _cpu_up() is called for a CPU, idle_thread_get() is called which then re-initializes a CPU's idle thread that was already previously created and cached in a global variable in smpboot.c. idle_thread_get() calls init_idle() which then calls __sched_fork(). __sched_fork() is where cpufreq_task_times_init() is, and cpufreq_task_times_init() allocates memory for the task struct's time_in_state array. Since idle_thread_get() reuses a task struct instance that was already previously created, this means that every time it calls init_idle(), cpufreq_task_times_init() allocates this array again and overwrites the existing allocation that the idle thread already had. This causes memory to be leaked every time a CPU is onlined. In order to fix this, move allocation of time_in_state into _do_fork to avoid allocating it at all for idle threads. The cpufreq times interface is intended to be used for tracking userspace tasks, so we can safely remove it from the kernel's idle threads without killing any functionality. But that's not all! Task structs can be freed outside of release_task(), which creates another memory leak because a task struct can be freed without having its cpufreq times allocation freed. To fix this, free the cpufreq times allocation at the same time that task struct allocations are freed, in free_task(). Since free_task() can also be called in error paths of copy_process() after dup_task_struct(), set time_in_state to NULL immediately after calling dup_task_struct() to avoid possible double free. Bug description and fix adapted from patch submitted by Sultan Alsawaf <sultanxda@gmail.com> at https://android-review.googlesource.com/c/kernel/msm/+/700134 Bug: 110044919 Test: Hikey960 builds, boots & reports /proc/<pid>/time_in_state correctly Change-Id: I12fe7611fc88eb7f6c39f8f7629ad27b6ec4722c Signed-off-by: Connor O'Brien <connoro@google.com>		2018-07-18 13:21:38 +00:00
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accessibility	printk: move braille console support into separate braille.[ch] files	2013-07-31 14:41:03 -07:00
acpi	ACPICA: acpi: acpica: fix acpi operand cache leak in nseval.c	2018-05-30 07:49:11 +02:00
amba	ARM: amba: Don't read past the end of sysfs "driver_override" buffer	2018-05-02 07:53:42 -07:00
android	UPSTREAM: binder: replace "%p" with "%pK"	2018-07-17 12:48:06 +02:00
ata	ahci: Disable LPM on Lenovo 50 series laptops with a too old BIOS	2018-07-17 11:31:43 +02:00
atm	atm: zatm: fix memcmp casting	2018-07-03 11:21:24 +02:00
auxdisplay	auxdisplay: ks0108: initialize local parport variable	2015-08-14 17:27:17 -07:00
base	This is the 4.4.139 stable release	2018-07-03 18:23:34 +02:00
bcma	bcma: use (get|put)_device when probing/removing device driver	2017-03-12 06:37:30 +01:00
block	loop: remember whether sysfs_create_group() was done	2018-07-17 11:31:46 +02:00
bluetooth	Bluetooth: hci_qca: Avoid missing rampatch failure with userspace fw loader	2018-07-03 11:21:28 +02:00
bus	bus: brcmstb_gisb: correct support for 64-bit address output	2018-04-13 19:50:05 +02:00
cdrom	cdrom: do not call check_disk_change() inside cdrom_open()	2018-05-30 07:49:13 +02:00
char	ipmi:bt: Set the timeout before doing a capabilities check	2018-07-03 11:21:28 +02:00
clk	clk: samsung: exynos3250: Fix PLL rates	2018-05-30 07:49:16 +02:00
clocksource	This is the 4.4.134 stable release	2018-05-30 13:25:24 +02:00
connector	connector: bump skb->users before callback invocation	2016-01-04 21:46:45 -05:00
cpufreq	ANDROID: Fix massive cpufreq_times memory leaks	2018-07-18 13:21:38 +00:00
cpuidle	This is the 4.4.139 stable release	2018-07-03 18:23:34 +02:00
crypto	crypto: vmx - Remove overly verbose printk from AES init routines	2018-06-16 09:54:27 +02:00
dca	dca: convert to idr_alloc()	2013-02-27 19:10:15 -08:00
devfreq	PM / devfreq: Propagate error from devfreq_add_device()	2018-02-22 15:44:58 +01:00
dio	m68k: don't export static inline functions	2009-12-06 11:18:28 +01:00
dma	dmaengine: usb-dmac: fix endless loop in usb_dmac_chan_terminate_all()	2018-06-06 16:46:22 +02:00
dma-buf	CHROMIUM: android: fix warning when releasing active sync point	2016-02-16 13:53:25 -08:00
edac	EDAC, mv64x60: Fix an error handling path	2018-04-13 19:50:23 +02:00
eisa	Revert "EISA: Initialize device before its resources"	2014-01-17 14:57:29 -07:00
extcon	extcon: palmas: Check the parent instance to prevent the NULL	2017-11-21 09:21:18 +01:00
firewire	firewire-ohci: work around oversized DMA reads on JMicron controllers	2018-05-30 07:48:52 +02:00
firmware	This is the 4.4.134 stable release	2018-05-30 13:25:24 +02:00
fmc	Merge 3.14-rc5 into char-misc-next	2014-03-02 19:53:09 -08:00
fpga	fpga manager: Fix firmware resource leak on error	2015-11-24 15:25:46 -08:00
gpio	gpio: No NULL owner	2018-06-16 09:54:26 +02:00
gpu	This is the 4.4.137 stable release	2018-06-13 16:36:26 +02:00
hid	This is the 4.4.141 stable release	2018-07-17 12:15:52 +02:00
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	hwmon: (pmbus/adm1275) Accept negative page register values	2018-05-30 07:49:13 +02:00
hwspinlock	drivers/hwspinlock: fix race between radix tree insertion and lookup	2016-02-25 12:01:23 -08:00
hwtracing	hwtracing: stm: fix build error on some arches	2018-06-06 16:46:23 +02:00
i2c	i2c: rcar: fix resume by always initializing registers before transfer	2018-07-11 16:03:47 +02:00
ide	cdrom: do not call check_disk_change() inside cdrom_open()	2018-05-30 07:49:13 +02:00
idle	idle: i7300: add PCI dependency	2018-02-25 11:03:51 +01:00
iio	iio:buffer: make length types match kfifo types	2018-07-03 11:21:30 +02:00
infiniband	RDMA/ucm: Mark UCM interface as BROKEN	2018-07-17 11:31:46 +02:00
input	This is the 4.4.139 stable release	2018-07-03 18:23:34 +02:00
iommu	x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros	2018-06-16 09:54:24 +02:00
ipack	ipoctal: clear break interrupt as soon as it occurs	2014-09-23 23:26:42 -07:00
irqchip	This is the 4.4.134 stable release	2018-05-30 13:25:24 +02:00
isdn	isdn: eicon: fix a missing-check bug	2018-06-13 16:15:28 +02:00
leds	leds: pca955x: Correct I2C Functionality	2018-04-13 19:50:09 +02:00
lguest	Merge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-06-22 17:59:09 -07:00
lightnvm	lightnvm: put bio before return	2016-09-24 10:07:35 +02:00
macintosh	drivers/macintosh: adb: fix misleading Kconfig help text	2015-10-15 20:31:59 +11:00
mailbox	mailbox: handle empty message in tx_tick	2017-08-06 19:19:41 -07:00
mcb	mcb: Fixed bar number assignment for the gdd	2016-06-01 12:15:53 -07:00
md	This is the 4.4.140 stable release	2018-07-11 16:24:21 +02:00
media	media: cx25840: Use subdev host data for PLL override	2018-07-11 16:03:51 +02:00
memory	ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure	2017-12-16 10:33:51 +01:00
memstick	memstick: rtsx_usb_ms: Manage runtime PM when accessing the device	2016-10-28 03:01:35 -04:00
message	scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo()	2018-05-30 07:48:58 +02:00
mfd	mfd: intel-lpss: Program REMAP register in PIO mode	2018-07-03 11:21:32 +02:00
misc	This is the 4.4.141 stable release	2018-07-17 12:15:52 +02:00
mmc	This is the 4.4.134 stable release	2018-05-30 13:25:24 +02:00
mtd	This is the 4.4.140 stable release	2018-07-11 16:24:21 +02:00
net	This is the 4.4.140 stable release	2018-07-11 16:24:21 +02:00
nfc	This is the 4.4.123 stable release	2018-03-22 09:57:28 +01:00
ntb	ntb_transport: Fix bug with max_mw_size parameter	2018-05-30 07:48:55 +02:00
nubus	nubus: Remove superfluous interrupt disable/restore	2014-10-27 11:03:19 +01:00
nvdimm	linvdimm, pmem: Preserve read-only setting for pmem devices	2018-07-03 11:21:31 +02:00
nvme	nvme-pci: initialize queue memory before interrupts	2018-07-11 16:03:47 +02:00
nvmem	nvmem: imx-ocotp: Fix wrong register size	2017-08-06 19:19:46 -07:00
of	This is the 4.4.139 stable release	2018-07-03 18:23:34 +02:00
oprofile	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
parisc	parisc/pci: Switch LBA PCI bus from Hard Fail to Soft Fail mode	2018-05-30 07:49:10 +02:00
parport	parport_pc: Add support for WCH CH382L PCI-E single parallel port card.	2018-04-08 11:52:00 +02:00
pci	PCI: pciehp: Clear Presence Detect and Data Link Layer Status Changed on resume	2018-07-03 11:21:30 +02:00
pcmcia	pcmcia: db1xxx_ss: fix last irq_to_gpio user	2016-04-20 15:42:09 +09:00
perf	This is the 4.4.123 stable release	2018-03-22 09:57:28 +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	goldfish: pipe: ANDROID: address must be written as __pa(x), not x	2018-06-05 09:42:36 -07:00
pnp	PNP: Add Broadwell to Intel MCH size workaround	2016-08-16 09:30:48 +02:00
power	This is the 4.4.124 stable release	2018-03-25 10:51:55 +02:00
powercap	PowerCap: Fix an error code in powercap_register_zone()	2018-04-13 19:50:05 +02:00
pps	pps: do not crash when failed to register	2016-08-10 11:49:25 +02:00
ps3	drivers/ps3: Fix ps3-vuart null dereference	2015-09-29 23:00:58 +10:00
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	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2015-06-23 14:08:54 -07:00
ras	x86/ras: Move AMD MCE injector to arch/x86/ras/	2015-08-13 10:12:54 +02:00
regulator	regulator: of: Add a missing 'of_node_put()' in an error handling path of 'of_regulator_match()'	2018-05-30 07:49:17 +02:00
remoteproc	remoteproc: Fix potential race condition in rproc_add	2016-08-20 18:09:20 +02:00
reset	reset: ath79: Fix missing spin_lock_init	2015-09-01 14:48:40 +02:00
rpmsg	virtio_rpmsg: set DRIVER_OK before using device	2015-03-13 15:55:42 +10:30
rtc	This is the 4.4.134 stable release	2018-05-30 13:25:24 +02:00
s390	scsi: zfcp: fix missing REC trigger trace on enqueue without ERP thread	2018-07-03 11:21:31 +02:00
sbus	drivers/sbus/char/envctrl.c: ignore orderly_poweroff return value	2015-04-15 16:35:23 -07:00
scsi	This is the 4.4.140 stable release	2018-07-11 16:24:21 +02:00
sfi	SFI: fix compiler warnings	2014-12-03 18:49:20 -05:00
sh	drivers: sh: Restore legacy clock domain on SuperH platforms	2016-03-09 15:34:49 -08:00
sn	Drivers: misc: remove __dev* attributes.	2013-01-03 15:57:16 -08:00
soc	soc: qcom/spm: shut up uninitialized variable warning	2016-09-24 10:07:42 +02:00
spi	spi: Fix scatterlist elements size in spi_map_buf	2018-07-03 11:21:35 +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	This is the 4.4.140 stable release	2018-07-11 16:24:21 +02:00
target	tcm_fileio: Prevent information leak for short reads	2018-03-24 10:58:45 +01:00
tc	TC: Error handling clean-ups	2014-11-24 07:45:25 +01:00
tee	BACKPORT: tee: shm: Potential NULL dereference calling tee_shm_register()	2018-02-21 15:40:49 +00:00
thermal	thermal: imx: Fix race condition in imx_thermal_probe()	2018-04-24 09:32:08 +02:00
thunderbolt	thunderbolt: Resume control channel after hibernation image is created	2018-04-24 09:32:07 +02:00
tty	This is the 4.4.140 stable release	2018-07-11 16:24:21 +02:00
uio	uio: fix dmem_region_start computation	2016-10-31 04:13:59 -06:00
usb	This is the 4.4.141 stable release	2018-07-17 12:15:52 +02:00
uwb	uwb: ensure that endpoint is interrupt	2017-10-12 11:27:35 +02:00
vfio	vfio/pci: Virtualize Maximum Read Request Size	2018-04-24 09:32:09 +02:00
vhost	vhost: correctly remove wait queue during poll failure	2018-04-13 19:50:25 +02:00
video	This is the 4.4.139 stable release	2018-07-03 18:23:34 +02:00
virt	drivers: clean-up prom.h implicit includes	2013-10-09 20:04:04 -05:00
virtio	virtio_balloon: prevent uninitialized variable use	2018-02-25 11:03:42 +01:00
vlynq	drivers/vlynq/vlynq.c: fix another resource size off by 1 error	2014-01-23 16:36:55 -08:00
vme	vme: Fix wrong pointer utilization in ca91cx42_slave_get	2017-01-19 20:17:21 +01:00
w1	This is the 4.4.139 stable release	2018-07-03 18:23:34 +02:00
watchdog	watchdog: f71808e_wdt: Fix magic close handling	2018-05-30 07:49:03 +02:00
xen	xen: Remove unnecessary BUG_ON from __unbind_from_irq()	2018-07-03 11:21:34 +02:00
zorro	zorro: Set up z->dev.dma_mask for the DMA API	2018-05-30 07:49:11 +02:00
Kconfig	tee: generic TEE subsystem	2017-12-02 06:53:27 +00:00
Makefile	This is the 4.4.118 stable release	2018-02-26 09:24:57 +01:00