Vitaly Kuznetsov bfe482b9b2 hv_balloon: avoid touching uninitialized struct page during tail onlining ... commit da8ced360c upstream. Hyper-V memory hotplug protocol has 2M granularity and in Linux x86 we use 128M. To deal with it we implement partial section onlining by registering custom page onlining callback (hv_online_page()). Later, when more memory arrives we try to online the 'tail' (see hv_bring_pgs_online()). It was found that in some cases this 'tail' onlining causes issues: BUG: Bad page state in process kworker/0:2 pfn:109e3a page:ffffe08344278e80 count:0 mapcount:1 mapping:0000000000000000 index:0x0 flags: 0xfffff80000000() raw: 000fffff80000000 dead000000000100 dead000000000200 0000000000000000 raw: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 page dumped because: nonzero mapcount ... Workqueue: events hot_add_req [hv_balloon] Call Trace: dump_stack+0x5c/0x80 bad_page.cold.112+0x7f/0xb2 free_pcppages_bulk+0x4b8/0x690 free_unref_page+0x54/0x70 hv_page_online_one+0x5c/0x80 [hv_balloon] hot_add_req.cold.24+0x182/0x835 [hv_balloon] ... Turns out that we now have deferred struct page initialization for memory hotplug so e.g. memory_block_action() in drivers/base/memory.c does pages_correctly_probed() check and in that check it avoids inspecting struct pages and checks sections instead. But in Hyper-V balloon driver we do PageReserved(pfn_to_page()) check and this is now wrong. Switch to checking online_section_nr() instead. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Cc: stable@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-01-31 08:14:36 +01:00
..
accessibility
acpi	ACPI/IORT: Fix rc_dma_get_range()	2019-01-16 22:04:34 +01:00
amba
android	binder: fix race that allows malicious free of live buffer	2018-12-05 19:32:11 +01:00
ata	libata: whitelist all SAMSUNG MZ7KM* solid-state disks	2018-12-21 14:15:20 +01:00
atm
auxdisplay	auxdisplay: charlcd: fix x/y command parsing	2019-01-13 09:51:03 +01:00
base	sysfs: Disable lockdep for driver bind/unbind files	2019-01-26 09:32:42 +01:00
bcma
block	nbd: Use set_blocksize() to set device blocksize	2019-01-22 21:40:38 +01:00
bluetooth	Bluetooth: btusb: Add support for Intel bluetooth device 8087:0029	2019-01-26 09:32:42 +01:00
bus	Merge branch 'perm-fix' into omap-for-v4.19/fixes-v2	2018-08-28 09:58:03 -07:00
cdrom	cdrom: fix improper type cast, which can leat to information leak.	2018-11-21 09:19:12 +01:00
char	char/mwave: fix potential Spectre v1 vulnerability	2019-01-31 08:14:36 +01:00
clk	clk: socfpga: stratix10: fix naming convention for the fixed-clocks	2019-01-31 08:14:34 +01:00
clocksource	clocksource/drivers/integrator-ap: Add missing of_node_put()	2019-01-26 09:32:42 +01:00
connector
cpufreq	cpufreq: scmi: Fix frequency invariance in slow path	2019-01-16 22:04:29 +01:00
cpuidle	powerpc/pseries/cpuidle: Fix preempt warning	2019-01-26 09:32:37 +01:00
crypto	crypto: talitos - fix ablkcipher for CONFIG_VMAP_STACK	2019-01-22 21:40:32 +01:00
dax	mm, devm_memremap_pages: fix shutdown handling	2019-01-13 09:51:04 +01:00
dca
devfreq	Char/Misc driver patches for 4.19-rc1	2018-08-18 11:04:51 -07:00
dio
dma	dmaengine: cppi41: delete channel from pending list when stop channel	2018-12-13 09:16:20 +01:00
dma-buf
edac	EDAC, skx_edac: Fix logical channel intermediate decoding	2018-11-13 11:08:44 -08:00
eisa
extcon
firewire	firewire: use 64-bit time_t based interfaces	2018-08-17 16:20:27 -07:00
firmware	efi/libstub: Disable some warnings for x86{,_64}	2019-01-26 09:32:36 +01:00
fmc
fpga	fpga: altera-cvp: fix probing for multiple FPGAs on the bus	2019-01-26 09:32:36 +01:00
fsi	fsi: master-ast-cf: select GENERIC_ALLOCATOR	2018-12-17 09:24:35 +01:00
gnss	gnss: sirf: fix activation retry handling	2018-12-13 09:16:22 +01:00
gpio	gpio: pl061: Move irq_chip definition inside struct pl061	2019-01-26 09:32:33 +01:00
gpu	drm/amdgpu: Reorder uvd ring init before uvd resume	2019-01-26 09:32:36 +01:00
hid	HID: ite: Add USB id match for another ITE based keyboard rfkill key quirk	2019-01-13 09:50:56 +01:00
hsi
hv	hv_balloon: avoid touching uninitialized struct page during tail onlining	2019-01-31 08:14:36 +01:00
hwmon	hwmon: (w83795) temp4_type has writable permission	2018-12-17 09:24:33 +01:00
hwspinlock
hwtracing	intel_th: msu: Fix an off-by-one in attribute store	2019-01-13 09:51:10 +01:00
i2c	i2c: dev: prevent adapter retries and timeout being set as minus value	2019-01-16 22:04:34 +01:00
ide	ide: pmac: add of_node_put()	2018-12-21 14:15:18 +01:00
idle
iio	iio: dac: ad5686: fix bit shift read register	2019-01-13 09:51:08 +01:00
infiniband	IB/usnic: Fix potential deadlock	2019-01-26 09:32:42 +01:00
input	Input: synaptics - enable SMBus for HP EliteBook 840 G4	2019-01-13 09:51:03 +01:00
iommu	iommu/vt-d: Handle domain agaw being less than iommu agaw	2019-01-13 09:51:09 +01:00
ipack
irqchip	irqchip/pdc: Setup all edge interrupts as rising edge at GIC	2018-11-13 11:08:34 -08:00
isdn	isdn: fix kernel-infoleak in capi_unlocked_ioctl	2019-01-09 17:38:31 +01:00
leds	leds: pwm: silently error out on EPROBE_DEFER	2019-01-13 09:51:08 +01:00
lightnvm	lightnvm: pblk: fix race condition on metadata I/O	2018-11-13 11:08:21 -08:00
macintosh	macintosh: therm_windtunnel: drop using attach_adapter	2018-08-24 14:42:42 +02:00
mailbox	mailbox: PCC: handle parse error	2018-11-13 11:08:18 -08:00
mcb
md	dm: Check for device sector overflow if CONFIG_LBDAF is not set	2019-01-26 09:32:42 +01:00
media	media: venus: core: Set dma maximum segment size	2019-01-26 09:32:38 +01:00
memory	memory: ti-aemif: fix a potential NULL-pointer dereference	2018-09-06 10:04:07 -07:00
memstick
message
mfd	mfd: tps6586x: Handle interrupts on suspend	2019-01-22 21:40:33 +01:00
misc	misc: ibmvsm: Fix potential NULL pointer dereference	2019-01-31 08:14:35 +01:00
mmc	mmc: meson-gx: Free irq in release() callback	2019-01-31 08:14:36 +01:00
mtd	mtd: rawnand: qcom: fix memory corruption that causes panic	2019-01-16 22:04:34 +01:00
mux	mux: adgs1408: use the correct MODULE_LICENSE	2018-10-12 17:36:39 +02:00
net	net: phy: marvell: Fix deadlock from wrong locking	2019-01-31 08:14:33 +01:00
nfc	NFC: nfcmrvl_uart: fix OF child-node lookup	2018-11-13 11:08:48 -08:00
ntb
nubus
nvdimm	mm, devm_memremap_pages: fix shutdown handling	2019-01-13 09:51:04 +01:00
nvme	nvmet-rdma: fix response use after free	2018-12-21 14:15:25 +01:00
nvmem	nvmem: check the return value of nvmem_add_cells()	2018-11-13 11:08:35 -08:00
of	of: overlay: add missing of_node_put() after add new node to changeset	2019-01-26 09:32:34 +01:00
opp	opp: ti-opp-supply: Correct the supply in _get_optimal_vdd_voltage call	2018-12-01 09:37:27 +01:00
oprofile
parisc
parport	Char/Misc driver patches for 4.19-rc1	2018-08-18 11:04:51 -07:00
pci	PCI: dwc: Move interrupt acking into the proper callback	2019-01-16 22:04:35 +01:00
pcmcia	pcmcia: Implement CLKRUN protocol disabling for Ricoh bridges	2018-11-13 11:08:17 -08:00
perf	drivers/perf: hisi: Fixup one DDRC PMU register offset	2019-01-13 09:51:10 +01:00
phy	phy: qcom-qusb2: Fix HSTX_TRIM tuning with fused value for SDM845	2018-12-17 09:24:34 +01:00
pinctrl	pinctrl: meson: fix pull enable register calculation	2019-01-13 09:50:54 +01:00
platform	platform/x86: asus-wmi: Tell the EC the OS will handle the display off hotkey	2019-01-26 09:32:34 +01:00
pnp
power	power: supply: olpc_battery: correct the temperature units	2019-01-13 09:51:10 +01:00
powercap
pps
ps3
ptp	ptp: fix Spectre v1 vulnerability	2018-10-17 22:00:22 -07:00
pwm	pwm: mediatek: Add MT7628 support	2018-08-20 11:36:07 +02:00
rapidio	drivers/rapidio/devices/rio_mport_cdev.c: remove redundant pointer md	2018-08-22 10:52:51 -07:00
ras
regulator	regulator: fix crash caused by null driver data	2018-09-20 09:04:51 -07:00
remoteproc	remoteproc: qcom: q6v5: Propagate EPROBE_DEFER	2018-11-13 11:08:52 -08:00
reset	ARM: SoC: late updates	2018-08-25 14:12:36 -07:00
rpmsg	rpmsg: smd: fix memory leak on channel create	2018-11-13 11:08:55 -08:00
rtc	rtc: m41t80: Correct alarm month range with RTC reads	2019-01-09 17:38:48 +01:00
s390	s390/smp: fix CPU hotplug deadlock with CPU rescan	2019-01-31 08:14:35 +01:00
sbus	drivers/sbus/char: add of_node_put()	2018-12-21 14:15:17 +01:00
scsi	scsi: megaraid: fix out-of-bound array accesses	2019-01-26 09:32:43 +01:00
sfi
sh
siox
slimbus	slimbus: ngd: mark PM functions as __maybe_unused	2018-12-19 19:19:49 +01:00
sn
soc	soc: ti: QMSS: Fix usage of irq_set_affinity_hint	2018-11-21 09:19:18 +01:00
soundwire	soundwire: Fix acquiring bus lock twice during master release	2018-08-27 09:49:48 +05:30
spi	spi: bcm2835: Unbreak the build of esoteric configs	2019-01-09 17:38:49 +01:00
spmi
ssb	ssb: Remove SSB_WARN_ON, SSB_BUG_ON and SSB_DEBUG	2018-08-09 18:47:47 +03:00
staging	staging: rtl8188eu: Add device code for D-Link DWA-121 rev B1	2019-01-31 08:14:36 +01:00
target	scsi: target/core: Make sure that target_wait_for_sess_cmds() waits long enough	2019-01-26 09:32:38 +01:00
tc	TC: Set DMA masks for devices	2018-11-13 11:08:51 -08:00
tee	ARM: SoC driver updates	2018-08-23 13:52:46 -07:00
thermal	thermal: armada: fix legacy validity test sense	2018-12-21 14:15:22 +01:00
thunderbolt	thunderbolt: Prevent root port runtime suspend during NVM upgrade	2018-12-17 09:24:36 +01:00
tty	tty/n_hdlc: fix __might_sleep warning	2019-01-31 08:14:36 +01:00
uio	uio: Fix an Oops on load	2018-11-27 16:13:09 +01:00
usb	USB: serial: pl2303: add new PID to support PL2303TB	2019-01-31 08:14:34 +01:00
uwb
vfio	vfio/type1: Fix unmap overflow off-by-one	2019-01-16 22:04:34 +01:00
vhost	vhost: log dirty page correctly	2019-01-31 08:14:32 +01:00
video	omap2fb: Fix stack memory disclosure	2019-01-22 21:40:34 +01:00
virt
virtio	virtio, vhost: fixes, tweaks	2018-08-24 08:45:19 -07:00
visorbus
vlynq
vme
w1	w1: omap-hdq: fix missing bus unregister at removal	2018-11-13 11:08:48 -08:00
watchdog	include/linux/compiler*.h: make compiler-*.h mutually exclusive	2018-08-22 17:31:34 -07:00
xen	xen: Fix x86 sched_clock() interface for xen	2019-01-22 21:40:32 +01:00
zorro
Kconfig
Makefile	Char/Misc driver patches for 4.19-rc1	2018-08-18 11:04:51 -07:00