Mikulas Patocka
1781fa54a4
dm writecache: fix incorrect flush sequence when doing SSD mode commit ...
commit aa9509209c5ac2f0b35d01a922bf9ae072d0c2fc 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: 48debafe4fstable@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 04:35:26 -08:00
ACPI / battery: Deal better with neither design nor full capacity not being reported
2020-02-11 04:35:20 -08:00
ARM updates for 5.4-rc:
2019-10-23 06:26:33 -04:00
binder: fix log spam for existing debugfs file creation.
2020-02-01 09:34:35 +00:00
libata: Fix retrieving of active qcs
2020-01-09 10:19:59 +01:00
atm: eni: fix uninitialized variable warning
2020-02-01 09:34:46 +00:00
PM: core: Fix handling of devices deleted during system-wide resume
2020-02-11 04:35:25 -08:00
xen/blkfront: Adjust indentation in xlvbd_alloc_gendisk
2020-01-23 08:22:54 +01:00
Bluetooth: btusb: Disable runtime suspend on Realtek devices
2020-02-11 04:35:09 -08:00
bus: ti-sysc: Fix missing force mstandby quirk handling
2020-02-01 09:34:51 +00:00
cdrom: respect device capabilities during opening action
2020-01-04 19:18:25 +01:00
ttyprintk: fix a potential deadlock in interrupt context issue
2020-02-05 21:22:41 +00:00
clk: mmp2: Fix the order of timer mux parents
2020-02-05 21:22:43 +00:00
clocksource: riscv: add notrace to riscv_sched_clock
2020-01-09 10:19:59 +01:00
cpufreq: Avoid creating excessively large stack frames
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cpuidle: teo: Avoid using "early hits" incorrectly
2020-02-05 21:22:52 +00:00
crypto: ccree - fix PM race condition
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PM / devfreq: Add new name attribute for sysfs
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dmaengine: ti: edma: fix missed failure handling
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dma-buf: Fix memory leak in sync_file_merge()
2019-12-21 11:04:48 +01:00
EDAC/ghes: Fix grain calculation
2019-12-31 16:45:16 +01:00
extcon-intel-cht-wc: Don't reset USB data connection at probe
2020-02-01 09:34:46 +00:00
net: add annotations on hh->hh_len lockless accesses
2020-01-09 10:20:06 +01:00
firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT
2020-01-26 10:01:07 +01:00
fsi: core: Fix small accesses and unaligned offsets via sysfs
2019-12-31 16:45:09 +01:00
gpio: max77620: Add missing dependency on GPIOLIB_IRQCHIP
2020-02-01 09:34:45 +00:00
drm/amdgpu/SRIOV: add navi12 pci id for SRIOV (v2)
2020-02-01 09:34:46 +00:00
HID: steam: Fix input device disappearing
2020-02-01 09:34:46 +00:00
hv_balloon: Balloon up according to request page number
2020-02-11 04:35:21 -08:00
hwmon: (nct7802) Fix non-working alarm on voltages
2020-01-29 16:45:30 +01:00
intel_th: msu: Fix window switching without windows
2019-12-31 16:46:09 +01:00
i2c: stm32f7: report dma error during probe
2020-01-26 10:01:06 +01:00
iio: st_gyro: Correct data for LSM9DS0 gyro
2020-02-01 09:34:36 +00:00
scsi: RDMA/isert: Fix a recently introduced regression related to logout
2020-01-29 16:45:30 +01:00
Input: max77650-onkey - add of_match table
2020-02-05 21:22:49 +00:00
interconnect: qcom: qcs404: Walk the list safely on node removal
2019-12-17 19:55:39 +01:00
iommu/amd: Support multiple PCI DMA aliases in IRQ Remapping
2020-02-01 09:34:48 +00:00
irqchip: Place CONFIG_SIFIVE_PLIC into the menu
2020-01-23 08:22:55 +01:00
net: use skb_queue_empty_lockless() in poll() handlers
2019-10-28 13:33:41 -07:00
led: max77650: add of_match table
2020-02-05 21:22:49 +00:00
cpufreq: Use per-policy frequency QoS
2019-10-21 02:05:21 +02:00
mailbox: imx: Fix Tx doorbell shutdown path
2020-01-04 19:18:30 +01:00
dm writecache: fix incorrect flush sequence when doing SSD mode commit
2020-02-11 04:35:26 -08:00
media: v4l2-core: compat: ignore native command codes
2020-02-11 04:35:14 -08:00
memory: mtk-smi: Add PM suspend and resume ops
2020-01-17 19:48:59 +01:00
scsi: mptfusion: Fix double fetch bug in ioctl
2020-01-23 08:22:35 +01:00
mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile
2020-02-11 04:35:21 -08:00
lkdtm/bugs: fix build error in lkdtm_UNSET_SMEP
2020-02-05 21:22:46 +00:00
mmc: sdhci-of-at91: fix memleak on clk_get failure
2020-02-11 04:35:21 -08:00
mtd: cfi_cmdset_0002: fix delayed error detection on HyperFlash
2020-01-23 08:22:57 +01:00
brcmfmac: Fix memory leak in brcmf_usbdev_qinit
2020-02-11 04:35:09 -08:00
NFC: pn533: fix bulk-message timeout
2020-01-23 08:22:48 +01:00
libnvdimm/btt: fix variable 'rc' set but not used
2020-01-04 19:18:12 +01:00
nvmet: Fix controller use after free
2020-02-11 04:35:08 -08:00
nvmem: core: fix memory abort in cleanup path
2020-02-11 04:35:21 -08:00
of: Add OF_DMA_DEFAULT_COHERENT & select it on powerpc
2020-02-11 04:35:25 -08:00
opp: Reinitialize the list_kref before adding the static OPPs again
2019-10-23 10:58:44 +05:30
parport: load lowlevel driver if ports not found
2019-12-31 16:45:25 +01:00
PCI: keystone: Fix error handling when "num-viewport" DT property is not populated
2020-02-11 04:35:19 -08:00
perf/imx_ddr: Add enhanced AXI ID filter support
2020-02-01 09:34:49 +00:00
phy: cpcap-usb: Prevent USB line glitches from waking up modem
2020-02-01 09:34:43 +00:00
pinctrl: sunrisepoint: Add missing Interrupt Status register offset
2020-01-29 16:45:27 +01:00
platform/x86: intel_scu_ipc: Fix interrupt support
2020-02-11 04:35:15 -08:00
power: supply: ltc2941-battery-gauge: fix use-after-free
2020-02-11 04:35:24 -08:00
powercap: intel_rapl: add NULL pointer check to rapl_mmio_cpu_online()
2020-01-14 20:08:18 +01:00
ptp: free ptp device pin descriptors properly
2020-01-23 08:22:51 +01:00
pwm: sun4i: Fix incorrect calculation of duty_cycle/period
2020-01-26 10:01:04 +01:00
regulator: bd70528: Add MODULE_ALIAS to allow module auto loading
2020-01-26 10:01:05 +01:00
reset: Fix {of,devm}_reset_control_array_get kerneldoc return types
2020-01-23 08:22:43 +01:00
rpmsg: char: release allocated memory
2020-01-14 20:08:37 +01:00
rtc: bd70528: fix module alias to autoload module
2020-01-26 10:01:06 +01:00
s390/zcrypt: move ap device reset from bus to driver code
2020-02-05 21:22:44 +00:00
scsi: qla2xxx: Fix mtcp dump collection failure
2020-02-11 04:35:23 -08:00
soc: ti: wkup_m3_ipc: Fix race condition with rproc_boot
2020-02-05 21:22:43 +00:00
soundwire: intel: fix PDI/stream mapping for Bulk
2019-12-31 16:45:11 +01:00
spi: pxa2xx: Add support for Intel Comet Lake-H
2020-02-01 09:34:48 +00:00
staging: mt7621-pci: add quirks for 'E2' revision using 'soc_device_attribute'
2020-02-01 09:34:47 +00:00
scsi: RDMA/isert: Fix a recently introduced regression related to logout
2020-01-29 16:45:30 +01:00
tee: optee: Fix compilation issue with nommu
2020-02-05 21:22:49 +00:00
thermal: Fix deadlock in thermal thermal_zone_device_check
2019-12-13 08:43:21 +01:00
thunderbolt: Power cycle the router if NVM authentication fails
2019-12-04 22:30:50 +01:00
serial: imx: fix a race condition in receive path
2020-02-01 09:34:34 +00:00
usb: gadget: f_ecm: Use atomic_t to track in-flight request
2020-02-11 04:35:10 -08:00
vfio/pci: call irq_bypass_unregister_producer() before freeing irq
2019-12-21 11:04:48 +01:00
vhost/vsock: accept only packets with the right dst_cid
2020-01-04 19:19:18 +01:00
video/hdmi: Fix AVI bar unpack
2019-12-17 19:56:42 +01:00
virtio-balloon: fix managed page counts when migrating pages between zones
2019-12-17 19:55:56 +01:00
watchdog: orion: fix platform_get_irq() complaints
2020-02-01 09:34:43 +00:00
xen/balloon: fix ballooned page accounting without hotplug enabled
2020-01-09 10:19:51 +01:00
1781fa54a4