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linux/drivers
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Ilya Dryomov f710ce8ad2 rbd: don't return 0 on unmap if RBD_DEV_FLAG_REMOVING is set 
commit 85f5a4d666 upstream.

There is a window between when RBD_DEV_FLAG_REMOVING is set and when
the device is removed from rbd_dev_list.  During this window, we set
"already" and return 0.

Returning 0 from write(2) can confuse userspace tools because
0 indicates that nothing was written.  In particular, "rbd unmap"
will retry the write multiple times a second:

  10:28:05.463299 write(4, "0", 1)        = 0
  10:28:05.463509 write(4, "0", 1)        = 0
  10:28:05.463720 write(4, "0", 1)        = 0
  10:28:05.463942 write(4, "0", 1)        = 0
  10:28:05.464155 write(4, "0", 1)        = 0

Cc: stable@vger.kernel.org
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Tested-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-16 22:12:32 +01:00
..
accessibility
…
acpi
ACPI: power: Skip duplicate power resource references in _PRx
2019-01-16 22:12:32 +01:00
amba
ARM: amba: Don't read past the end of sysfs "driver_override" buffer
2018-05-01 15:13:08 -07:00
android
binder: fix proc->files use-after-free
2018-12-08 13:05:07 +01:00
ata
libata: whitelist all SAMSUNG MZ7KM* solid-state disks
2018-12-21 14:11:37 +01:00
atm
atm: zatm: Fix potential Spectre v1
2018-07-22 14:27:36 +02:00
auxdisplay
auxdisplay: img-ascii-lcd: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
2018-02-13 12:35:55 +01:00
base
platform-msi: Free descriptors in platform_msi_domain_free()
2019-01-09 16:16:43 +01:00
bcma
bcma: use (get|put)_device when probing/removing device driver
2017-03-12 06:41:52 +01:00
block
rbd: don't return 0 on unmap if RBD_DEV_FLAG_REMOVING is set
2019-01-16 22:12:32 +01:00
bluetooth
Revert "Bluetooth: h5: Fix missing dependency on BT_HCIUART_SERDEV"
2018-11-27 16:09:40 +01:00
bus
bus: arm-cci: remove unnecessary unreachable()
2018-12-05 19:42:41 +01:00
cdrom
cdrom: fix improper type cast, which can leat to information leak.
2018-11-21 09:25:57 +01:00
char
tpm: tpm_i2c_nuvoton: use correct command duration for TPM 2.x
2019-01-09 16:16:45 +01:00
clk
clk: rockchip: fix typo in rk3188 spdif_frac parent
2019-01-09 16:16:44 +01:00
clocksource
clockevents/drivers/i8253: Add support for PIT shutdown quirk
2018-11-21 09:26:01 +01:00
connector
…
cpufreq
cpufreq: imx6q: add return value check for voltage scale
2018-12-01 09:44:20 +01:00
cpuidle
cpuidle: powernv: Fix promotion from snooze if next state disabled
2018-07-03 11:23:08 +02:00
crypto
crypto: caam - fix implicit casts in endianness helpers
2018-11-13 11:16:53 -08:00
dax
device-dax: implement ->split() to catch invalid munmap attempts
2018-02-28 10:18:33 +01:00
dca
…
devfreq
PM / devfreq: Fix potential NULL pointer dereference in governor_store
2018-04-13 19:48:09 +02:00
dio
…
dma
dmaengine: cppi41: delete channel from pending list when stop channel
2018-12-13 09:20:29 +01:00
dma-buf
dma-buf: remove redundant initialization of sg_table
2018-06-06 16:44:33 +02:00
edac
EDAC, skx_edac: Fix logical channel intermediate decoding
2018-11-13 11:16:56 -08:00
eisa
…
extcon
extcon: palmas: Check the parent instance to prevent the NULL
2017-11-21 09:23:21 +01:00
firewire
firewire-ohci: work around oversized DMA reads on JMicron controllers
2018-05-30 07:50:18 +02:00
firmware
efi/libstub: Make file I/O chunking x86-specific
2018-12-05 19:42:42 +01:00
fmc
…
fpga
…
gpio
gpio: max7301: fix driver for use with CONFIG_VMAP_STACK
2018-12-29 13:40:15 +01:00
gpu
drm/vc4: Set ->is_yuv to false when num_planes == 1
2019-01-13 10:03:55 +01:00
hid
HID: input: Ignore battery reported by Symbol DS4308
2018-12-13 09:20:25 +01:00
hsi
HSI: ssi_protocol: double free in ssip_pn_xmit()
2018-03-24 11:00:12 +01:00
hv
Drivers: hv: vmbus: Return -EINVAL for the sys files for unopened channels
2018-12-29 13:40:15 +01:00
hwmon
hwmon: (w83795) temp4_type has writable permission
2018-12-17 09:38:32 +01:00
hwspinlock
…
hwtracing
intel_th: msu: Fix an off-by-one in attribute store
2019-01-13 10:03:55 +01:00
i2c
i2c: dev: prevent adapter retries and timeout being set as minus value
2019-01-16 22:12:32 +01:00
ide
ide: pmac: add of_node_put()
2018-12-21 14:11:37 +01:00
idle
idle: i7300: add PCI dependency
2018-02-25 11:05:55 +01:00
iio
iio:st_magn: Fix enable device after trigger
2018-12-05 19:42:41 +01:00
infiniband
rxe: fix error completion wr_id and qp_num
2019-01-13 10:03:53 +01:00
input
Input: omap-keypad - fix idle configuration to not block SoC idle states
2019-01-13 10:03:48 +01:00
iommu
iommu/vt-d: Handle domain agaw being less than iommu agaw
2019-01-13 10:03:53 +01:00
ipack
ipack: print a hex number after a 0x prefix
2016-10-27 18:43:43 -07:00
irqchip
irqchip/bcm7038-l1: Hide cpu offline callback when building for !SMP
2018-09-15 09:42:58 +02:00
isdn
isdn: fix kernel-infoleak in capi_unlocked_ioctl
2019-01-09 16:16:40 +01:00
leds
leds: pca955x: Correct I2C Functionality
2018-04-13 19:48:03 +02:00
lguest
…
lightnvm
Merge branch 'for-4.9/block' of git://git.kernel.dk/linux-block
2016-10-07 14:42:05 -07:00
macintosh
macintosh/rack-meter: Convert cputime64_t use to u64
2018-10-20 09:51:32 +02:00
mailbox
mailbox: xgene-slimpro: Fix potential NULL pointer dereference
2018-09-09 20:01:19 +02:00
mcb
MCB: add support for SC31 to mcb-lpc
2017-09-09 17:39:41 +02:00
md
MD: fix invalid stored role for a disk - try2
2018-11-13 11:17:05 -08:00
media
media: v4l2-tpg: array index could become negative
2019-01-09 16:16:44 +01:00
memory
memory: tegra: Apply interrupts mask per SoC
2018-08-03 07:55:24 +02:00
memstick
memstick: rtsx_usb_ms: Manage runtime PM when accessing the device
2016-10-17 15:43:05 +02:00
message
scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo()
2018-05-25 16:13:06 +02:00
mfd
mfd: omap-usb-host: Fix dts probe of children
2018-10-18 09:13:20 +02:00
misc
genwqe: Fix size check
2019-01-13 10:03:55 +01:00
mmc
mmc: omap_hsmmc: fix DMA API warning
2018-12-29 13:40:15 +01:00
mtd
mtd: atmel-quadspi: disallow building on ebsa110
2019-01-09 16:16:42 +01:00
net
bnx2x: Fix NULL pointer dereference in bnx2x_del_all_vlans() on some hw
2019-01-13 10:03:55 +01:00
nfc
NFC: nxp-nci: Include unaligned.h instead of access_ok.h
2019-01-09 16:16:39 +01:00
ntb
ntb_transport: Fix bug with max_mw_size parameter
2018-05-30 07:50:22 +02:00
nubus
…
nvdimm
libnvdimm: Hold reference on parent while scheduling async init
2018-11-13 11:16:55 -08:00
nvme
nvmet-rdma: fix response use after free
2018-12-21 14:11:39 +01:00
nvmem
nvmem: properly handle returned value nvmem_reg_read
2018-08-03 07:55:22 +02:00
of
of: add helper to lookup compatible child node
2018-12-01 09:44:21 +01:00
oprofile
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
parisc
parisc/pci: Switch LBA PCI bus from Hard Fail to Soft Fail mode
2018-05-30 07:50:43 +02:00
parport
parport: sunbpp: fix error return code
2018-09-26 08:36:38 +02:00
pci
PCI: Add Device IDs for Intel GPU "spurious interrupt" quirk
2018-11-13 11:16:56 -08:00
pcmcia
pcmcia: Implement CLKRUN protocol disabling for Ricoh bridges
2018-11-13 11:16:46 -08:00
perf
drivers/perf: arm_pmu: handle no platform_device
2018-03-22 09:17:51 +01:00
phy
phy: work around 'phys' references to usb-nop-xceiv devices
2018-01-23 19:57:07 +01:00
pinctrl
pinctrl: meson: fix pull enable register calculation
2019-01-13 10:03:47 +01:00
platform
platform/x86: acerhdf: Add BIOS entry for Gateway LT31 v1.3307
2018-11-27 16:09:38 +01:00
pnp
…
power
power: supply: olpc_battery: correct the temperature units
2019-01-13 10:03:55 +01:00
powercap
PowerCap: Fix an error code in powercap_register_zone()
2018-04-13 19:47:56 +02:00
pps
pps: kc: fix non-tickless system config dependency
2016-10-11 15:06:32 -07:00
ps3
powerpc: Remove all usages of NO_IRQ
2016-09-20 20:57:12 +10:00
ptp
ptp: fix Spectre v1 vulnerability
2018-11-10 07:43:00 -08:00
pwm
pwm: tiehrpwm: Fix disabling of output of PWMs
2018-09-09 20:01:25 +02:00
rapidio
drivers/rapidio/devices/rio_mport_cdev.c: fix resource leak in error handling path in 'rio_dma_transfer()'
2017-12-14 09:28:22 +01:00
ras
…
regulator
regulator: fix crash caused by null driver data
2018-10-03 17:01:49 -07:00
remoteproc
remoteproc: qcom: mdt_loader: Don't overwrite firmware object
2017-03-12 06:41:50 +01:00
reset
reset: make device_reset_optional() really optional
2018-12-08 13:05:08 +01:00
rpmsg
rpmsg: smd: fix memory leak on channel create
2018-11-13 11:17:03 -08:00
rtc
rtc: m41t80: Correct alarm month range with RTC reads
2019-01-09 16:16:45 +01:00
s390
scsi: zfcp: fix posting too many status read buffers leading to adapter shutdown
2019-01-13 10:03:50 +01:00
sbus
drivers/sbus/char: add of_node_put()
2018-12-21 14:11:36 +01:00
scsi
scsi: bnx2fc: Fix NULL dereference in error handling
2019-01-13 10:03:48 +01:00
sfi
…
sh
…
sn
…
soc
soc/tegra: pmc: Fix child-node lookup
2018-11-13 11:17:04 -08:00
spi
spi: bcm2835: Unbreak the build of esoteric configs
2019-01-09 16:16:45 +01:00
spmi
spmi: Include OF based modalias in device uevent
2017-07-27 15:08:08 -07:00
ssb
ssb: Fix error routine when fallback SPROM fails
2017-01-09 08:32:16 +01:00
staging
staging: wilc1000: fix missing read_write setting when reading data
2019-01-09 16:16:43 +01:00
target
scsi: target: iscsi: cxgbit: add missing spin_lock_init()
2019-01-13 10:03:49 +01:00
tc
TC: Set DMA masks for devices
2018-11-13 11:17:02 -08:00
thermal
thermal: of-thermal: disable passive polling when thermal zone is disabled
2018-10-03 17:01:51 -07:00
thunderbolt
thunderbolt: Resume control channel after hibernation image is created
2018-04-24 09:34:12 +02:00
tty
serial/sunsu: fix refcount leak
2019-01-13 10:03:50 +01:00
uio
uio: Fix an Oops on load
2018-11-27 16:09:41 +01:00
usb
USB: Add USB_QUIRK_DELAY_CTRL_MSG quirk for Corsair K70 RGB
2019-01-16 22:12:31 +01:00
uwb
uwb: hwa-rc: fix memory leak at probe
2018-10-03 17:01:42 -07:00
vfio
vfio: platform: Fix reset module leak in error path
2018-08-03 07:55:13 +02:00
vhost
vhost/vsock: fix uninitialized vhost_vsock->guest_cid
2019-01-13 10:03:51 +01:00
video
mach64: fix image corruption due to reading accelerator registers
2018-11-21 09:26:00 +01:00
virt
mm: replace get_user_pages() write/force parameters with gup_flags
2016-10-19 08:11:43 -07:00
virtio
virtio: pci-legacy: Validate queue pfn
2018-09-15 09:42:57 +02:00
vlynq
…
vme
VME: restore bus_remove function causing incomplete module unload
2017-03-12 06:41:50 +01:00
w1
w1: omap-hdq: fix missing bus unregister at removal
2018-11-13 11:17:01 -08:00
watchdog
watchdog: sbsa: use 32-bit read for WCV
2018-05-30 07:50:34 +02:00
xen
xen: xlate_mmu: add missing header to fix 'W=1' warning
2018-12-17 09:38:34 +01:00
zorro
zorro: Set up z->dev.dma_mask for the DMA API
2018-05-30 07:50:44 +02:00
Kconfig
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Makefile
usb: build drivers/usb/common/ when USB_SUPPORT is set
2018-02-25 11:05:45 +01:00