Mikulas Patocka a999296636 dm writecache: fix incorrect flush sequence when doing SSD mode commit ... commit aa9509209c upstream. When committing state, the function writecache_flush does the following: 1. write metadata (writecache_commit_flushed) 2. flush disk cache (writecache_commit_flushed) 3. wait for data writes to complete (writecache_wait_for_ios) 4. increase superblock seq_count 5. write the superblock 6. flush disk cache It may happen that at step 3, when we wait for some write to finish, the disk may report the write as finished, but the write only hit the disk cache and it is not yet stored in persistent storage. At step 5 we write the superblock - it may happen that the superblock is written before the write that we waited for in step 3. If the machine crashes, it may result in incorrect data being returned after reboot. In order to fix the bug, we must swap steps 2 and 3 in the above sequence, so that we first wait for writes to complete and then flush the disk cache. Fixes: 48debafe4f ("dm: add writecache target") Cc: stable@vger.kernel.org # 4.18+ Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-02-11 04:34:04 -08:00
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accessibility
acpi	ACPI / battery: Deal better with neither design nor full capacity not being reported	2020-02-11 04:33:59 -08:00
amba
android
ata	ahci: Do not export local variable ahci_em_messages	2020-01-27 14:51:07 +01:00
atm	atm: eni: fix uninitialized variable warning	2020-02-01 09:37:09 +00:00
auxdisplay
base	PM: core: Fix handling of devices deleted during system-wide resume	2020-02-11 04:34:03 -08:00
bcma	bcma: fix incorrect update of BCMA_CORE_PCI_MDIO_DATA	2020-01-27 14:51:09 +01:00
block	signal: Allow cifs and drbd to receive their terminating signals	2020-01-27 14:51:05 +01:00
bluetooth
bus	bus: ti-sysc: Fix sysc_unprepare() when no clocks have been allocated	2020-01-27 14:50:36 +01:00
cdrom
char	ttyprintk: fix a potential deadlock in interrupt context issue	2020-02-05 14:43:39 +00:00
clk	clk: mmp2: Fix the order of timer mux parents	2020-02-05 14:43:43 +00:00
clocksource	clocksource/drivers/exynos_mct: Fix error path in timer resources initialization	2020-01-27 14:50:27 +01:00
connector
cpufreq	cpufreq: brcmstb-avs-cpufreq: Fix types for voltage/frequency	2020-01-27 14:50:53 +01:00
cpuidle
crypto	crypto: ccree - fix PM race condition	2020-02-11 04:34:01 -08:00
dax
dca
devfreq	PM / devfreq: Add new name attribute for sysfs	2020-02-05 14:43:34 +00:00
dio
dma	dmaengine: ti: edma: fix missed failure handling	2020-01-27 14:51:22 +01:00
dma-buf
edac	EDAC/mc: Fix edac_mc_find() in case no device is found	2020-01-27 14:50:48 +01:00
eisa
extcon
firewire
firmware	firmware: dmi: Fix unlikely out-of-bounds read in save_mem_devices	2020-01-27 14:51:19 +01:00
fmc
fpga
fsi	fsi: sbefifo: Don't fail operations when in SBE IPL state	2020-01-27 14:51:00 +01:00
gnss
gpio	gpio: max77620: Add missing dependency on GPIOLIB_IRQCHIP	2020-02-01 09:37:09 +00:00
gpu	Revert "drm/sun4i: dsi: Change the start delay calculation"	2020-02-11 04:33:50 -08:00
hid	HID: steam: Fix input device disappearing	2020-02-01 09:37:09 +00:00
hsi
hv	hv_balloon: Balloon up according to request page number	2020-02-11 04:34:01 -08:00
hwmon	hwmon: (nct7802) Fix voltage limits to wrong registers	2020-01-29 16:43:21 +01:00
hwspinlock
hwtracing	coresight: tmc-etf: Do not call smp_processor_id from preemptible	2020-01-29 16:43:23 +01:00
i2c	i2c: stm32f7: report dma error during probe	2020-01-27 14:51:21 +01:00
ide
idle
iio	iio: st_gyro: Correct data for LSM9DS0 gyro	2020-02-01 09:37:04 +00:00
infiniband	scsi: RDMA/isert: Fix a recently introduced regression related to logout	2020-01-29 16:43:21 +01:00
input	Input: sun4i-ts - add a check for devm_thermal_zone_of_sensor_register	2020-01-29 16:43:20 +01:00
iommu	iommu/amd: Support multiple PCI DMA aliases in IRQ Remapping	2020-02-01 09:37:10 +00:00
ipack
irqchip
isdn
leds	led: triggers: Fix dereferencing of null pointer	2020-01-27 14:51:10 +01:00
lightnvm	lightnvm: pblk: fix lock order in pblk_rb_tear_down_check	2020-01-27 14:50:45 +01:00
macintosh
mailbox	mailbox: qcom-apcs: fix max_register value	2020-01-27 14:51:14 +01:00
mcb
md	dm writecache: fix incorrect flush sequence when doing SSD mode commit	2020-02-11 04:34:04 -08:00
media	media: v4l2-core: compat: ignore native command codes	2020-02-11 04:33:56 -08:00
memory	memory: tegra: Don't invoke Tegra30+ specific memory timing setup on Tegra20	2020-01-27 14:50:13 +01:00
memstick
message
mfd	mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile	2020-02-11 04:34:01 -08:00
misc	mei: me: add comet point (lake) H device ids	2020-02-01 09:37:04 +00:00
mmc	mmc: sdhci-of-at91: fix memleak on clk_get failure	2020-02-11 04:34:00 -08:00
mtd
mux
net	brcmfmac: Fix memory leak in brcmf_usbdev_qinit	2020-02-11 04:33:55 -08:00
nfc
ntb	ntb_hw_switchtec: potential shift wrapping bug in switchtec_ntb_init_sndev()	2020-01-27 14:50:55 +01:00
nubus
nvdimm
nvme	nvme: retain split access workaround for capability reads	2020-01-27 14:51:16 +01:00
nvmem	nvmem: imx-ocotp: Change TIMING calculation to u-boot algorithm	2020-01-27 14:50:58 +01:00
of	of: Add OF_DMA_DEFAULT_COHERENT & select it on powerpc	2020-02-11 04:34:03 -08:00
opp
oprofile
parisc
parport
pci	PCI: keystone: Fix link training retries initiation	2020-02-11 04:34:00 -08:00
pcmcia
perf
phy	phy: cpcap-usb: Prevent USB line glitches from waking up modem	2020-02-01 09:37:07 +00:00
pinctrl	pinctrl: iproc-gpio: Fix incorrect pinconf configurations	2020-01-27 14:51:12 +01:00
platform	platform/x86: intel_scu_ipc: Fix interrupt support	2020-02-11 04:33:57 -08:00
pnp
power	power: supply: ltc2941-battery-gauge: fix use-after-free	2020-02-11 04:34:02 -08:00
powercap
pps
ps3
ptp
pwm	pwm: meson: Don't disable PWM when setting duty repeatedly	2020-01-27 14:50:47 +01:00
rapidio	drivers/rapidio/rio_cm.c: fix potential oops in riocm_ch_listen()	2020-01-27 14:50:31 +01:00
ras
regulator	regulator: tps65086: Fix tps65086_ldoa1_ranges for selector 0xB	2020-01-27 14:50:33 +01:00
remoteproc
reset
rpmsg
rtc	rtc: pcf2127: bugfix: read rtc disables watchdog	2020-01-27 14:51:07 +01:00
s390	s390/qeth: Fix initialization of vnicc cmd masks during set online	2020-01-27 14:51:18 +01:00
sbus
scsi	scsi: qla2xxx: Fix mtcp dump collection failure	2020-02-11 04:34:02 -08:00
sfi
sh
siox
slimbus
sn
soc	soc: ti: wkup_m3_ipc: Fix race condition with rproc_boot	2020-02-05 14:43:41 +00:00
soundwire
spi	spi: spi-dw: Add lock protect dw_spi rx/tx to prevent concurrent calls	2020-02-01 09:37:08 +00:00
spmi
ssb
staging	staging: vt6656: Fix false Tx excessive retries reporting.	2020-02-01 09:37:03 +00:00
target	scsi: RDMA/isert: Fix a recently introduced regression related to logout	2020-01-29 16:43:21 +01:00
tc
tee	tee: optee: Fix compilation issue with nommu	2020-02-05 14:43:50 +00:00
thermal	thermal: cpu_cooling: Actually trace CPU load in thermal_power_cpu_get_power	2020-01-27 14:50:48 +01:00
thunderbolt
tty	serial: 8250_bcm2835aux: Fix line mismatch on driver unbind	2020-02-01 09:37:03 +00:00
uio	driver: uio: fix possible use-after-free in __uio_register_device	2020-01-27 14:50:17 +01:00
usb	usb: gadget: f_ecm: Use atomic_t to track in-flight request	2020-02-11 04:33:56 -08:00
uwb
vfio	vfio/mdev: Fix aborting mdev child device removal if one fails	2020-01-27 14:50:46 +01:00
vhost	vhost/test: stop device before reset	2020-01-27 14:51:19 +01:00
video	backlight: pwm_bl: Fix heuristic to determine number of brightness levels	2020-01-27 14:50:58 +01:00
virt
virtio
visorbus
vlynq
vme
w1
watchdog	watchdog: rn5t618_wdt: fix module aliases	2020-02-01 09:37:08 +00:00
xen	net: add {READ|WRITE}_ONCE() annotations on ->rskq_accept_head	2020-01-27 14:51:18 +01:00
zorro
Kconfig
Makefile