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Ross Lagerwall 2540c662d8 xen/blkfront: Only check REQ_FUA for writes 
[ Upstream commit b6ebaa8100 ]

The existing code silently converts read operations with the
REQ_FUA bit set into write-barrier operations. This results in data
loss as the backend scribbles zeroes over the data instead of returning
it.

While the REQ_FUA bit doesn't make sense on a read operation, at least
one well-known out-of-tree kernel module does set it and since it
results in data loss, let's be safe here and only look at REQ_FUA for
writes.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Acked-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20230426164005.2213139-1-ross.lagerwall@citrix.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-06-21 15:39:57 +02:00
..
accessibility
acpi ACPI: thermal: drop an always true check 2023-06-09 10:24:02 +02:00
amba
android binder: fix UAF of ref->proc caused by race condition 2022-09-15 12:17:03 +02:00
ata ata: libata-scsi: Use correct device no in ata_find_dev() 2023-06-09 10:24:02 +02:00
atm atm: idt77252: fix kmemleak when rmmod idt77252 2023-04-05 11:15:34 +02:00
auxdisplay
base regmap: Account for register length when chunking 2023-06-09 10:24:04 +02:00
bcma
block xen/blkfront: Only check REQ_FUA for writes 2023-06-21 15:39:57 +02:00
bluetooth Revert "Bluetooth: btsdio: fix use after free bug in btsdio_remove due to unfinished work" 2023-05-17 11:13:14 +02:00
bus bus: imx-weim: fix branch condition evaluates to a garbage value 2023-04-05 11:15:38 +02:00
cdrom
char tpm/tpm_tis: Disable interrupts for more Lenovo devices 2023-05-30 12:42:11 +01:00
clk clk: tegra20: fix gcc-7 constant overflow warning 2023-05-30 12:42:10 +01:00
clocksource clocksource/drivers/sh_cmt: Make sure channel clock supply is enabled 2023-01-18 11:30:06 +01:00
connector
cpufreq cpufreq: amd_freq_sensitivity: Add missing pci_dev_put() 2023-01-18 11:30:06 +01:00
cpuidle cpuidle: dt: Return the correct numbers of parsed idle states 2023-01-18 11:30:04 +01:00
crypto crypto: crypto4xx - Call dma_unmap_page when done 2023-03-11 16:31:38 +01:00
dax
dca
devfreq
dio drivers: dio: fix possible memory leak in dio_init() 2023-01-18 11:30:23 +01:00
dma dmaengine: pl330: rename _start to prevent build error 2023-06-09 10:23:55 +02:00
dma-buf
edac EDAC/skx: Fix overflows on the DRAM row address mapping arrays 2023-05-17 11:13:09 +02:00
eisa
extcon
firewire firewire: fix memory leak for payload of request subaction to IEC 61883-1 FCP region 2023-02-22 12:47:11 +01:00
firmware firmware: arm_sdei: Fix sleep from invalid context BUG 2023-05-30 12:42:08 +01:00
fmc
fpga fpga: bridge: fix kernel-doc parameter description 2023-05-17 11:13:15 +02:00
fsi fsi: core: Check error number after calling ida_simple_get 2022-10-26 13:19:33 +02:00
gnss
gpio gpio: davinci: Add irq chip flag to skip set wake 2023-04-20 12:04:38 +02:00
gpu drm/amdgpu: fix xclk freq on CHIP_STONEY 2023-06-14 10:57:14 +02:00
hid HID: wacom: avoid integer overflow in wacom_intuos_inout() 2023-06-09 10:24:01 +02:00
hsi HSI: omap_ssi_core: Fix error handling in ssi_init() 2023-01-18 11:30:30 +01:00
hv Drivers: hv: vmbus: fix possible memory leak in vmbus_device_register() 2022-12-08 11:18:29 +01:00
hwmon hwmon: (scmi) Remove redundant pointer check 2023-06-09 10:24:03 +02:00
hwspinlock
hwtracing coresight: Fix signedness bug in tmc_etr_buf_insert_barrier_packet() 2023-05-30 12:42:15 +01:00
i2c i2c: sprd: Delete i2c adapter in .remove's error path 2023-06-14 10:57:14 +02:00
ide
idle intel_idle: Disable IBRS during long idle 2022-11-23 07:53:45 +01:00
iio iio: dac: build ad5758 driver when AD5758 is selected 2023-06-09 10:24:01 +02:00
infiniband i40iw: fix build warning in i40iw_manage_apbvt() 2023-06-14 10:57:12 +02:00
input Input: psmouse - fix OOB access in Elantech protocol 2023-06-14 10:57:13 +02:00
iommu iommu/mediatek-v1: Fix an error handling path in mtk_iommu_v1_probe() 2023-01-18 11:30:55 +01:00
ipack
irqchip irqchip/meson-gpio: Mark OF related data as maybe unused 2023-06-21 15:39:56 +02:00
isdn mISDN: hfcmulti: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave() 2023-01-18 11:30:32 +01:00
leds
lightnvm
macintosh macintosh: via-pmu-led: requires ATA to be set 2023-05-17 11:13:18 +02:00
mailbox mailbox: mailbox-test: fix a locking issue in mbox_test_message_write() 2023-06-09 10:24:01 +02:00
mcb mcb-pci: Reallocate memory region to avoid memory overlapping 2023-05-30 12:42:09 +01:00
md dm verity: fix error handling for check_at_most_once on FEC 2023-05-17 11:13:23 +02:00
media media: dvb-core: Fix use-after-free due to race condition at dvb_ca_en50221 2023-06-09 10:24:00 +02:00
memory memory: of: Fix refcount leak bug in of_get_ddr_timings() 2022-10-26 13:19:28 +02:00
memstick memstick: r592: Fix UAF bug in r592_remove due to race condition 2023-05-30 12:42:08 +01:00
message scsi: message: mptlan: Fix use after free bug in mptlan_remove() due to race condition 2023-05-30 12:42:09 +01:00
mfd mfd: dln2: Fix memory leak in dln2_probe() 2023-05-30 12:42:10 +01:00
misc vmci_host: fix a race condition in vmci_host_poll() causing GPF 2023-05-17 11:13:16 +02:00
mmc mmc: vub300: fix invalid response handling 2023-06-09 10:24:03 +02:00
mtd spi: cadence-quadspi: fix suspend-resume implementations 2023-05-17 11:13:17 +02:00
mux
net net: dsa: lan9303: allow vid != 0 in port_fdb_{add|del} methods 2023-06-14 10:57:12 +02:00
nfc nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition 2023-03-22 13:27:09 +01:00
ntb NTB: ntb_tool: uninitialized heap data in tool_fn_write() 2022-08-25 11:15:39 +02:00
nubus
nvdimm nvdimm: Fix badblocks clear off-by-one error 2022-07-07 17:35:09 +02:00
nvme nvmet: avoid potential UAF in nvmet_req_complete() 2023-03-22 13:27:09 +01:00
nvmem
of of: Fix modalias string generation 2023-05-17 11:13:16 +02:00
opp
oprofile
parisc parisc: led: Fix potential null-ptr-deref in start_task() 2023-01-18 11:30:44 +01:00
parport parport_pc: Avoid FIFO port location truncation 2022-11-25 17:40:23 +01:00
pci PCI: pciehp: Fix AB-BA deadlock between reset_lock and device_lock 2023-05-17 11:13:28 +02:00
pcmcia
perf perf: arm_dsu: Fix hotplug callback leak in dsu_pmu_init() 2023-01-18 11:30:02 +01:00
phy phy: st: miphy28lp: use _poll_timeout functions for waits 2023-05-30 12:42:10 +01:00
pinctrl pinctrl: meson-axg: add missing GPIOA_18 gpio group 2023-06-14 10:57:14 +02:00
platform platform/x86: touchscreen_dmi: Add info for the Dexp Ursus KX210i 2023-05-17 11:13:26 +02:00
pnp PNP: fix name memory leak in pnp_alloc_dev() 2023-01-18 11:30:05 +01:00
power power: supply: Fix logic checking if system is running from battery 2023-06-21 15:39:56 +02:00
powercap powercap: fix possible name leak in powercap_register_zone() 2023-03-11 16:31:36 +01:00
pps
ps3
ptp
pwm pwm: mtk-disp: Disable shadow registers before setting backlight values 2023-05-17 11:13:20 +02:00
rapidio rapidio: devices: fix missing put_device in mport_cdev_open 2023-01-18 11:30:08 +01:00
ras
regulator regulator: Fix error checking for debugfs_create_dir 2023-06-21 15:39:56 +02:00
remoteproc remoteproc: qcom: wcnss: Fix handling of IRQs 2022-08-25 11:15:21 +02:00
reset
rpmsg rpmsg: glink: Avoid infinite loop on intent for missing channel 2023-03-11 16:31:45 +01:00
rtc rtc: pm8xxx: fix set-alarm race 2023-03-11 16:31:48 +01:00
s390 s390/qdio: fix do_sqbs() inline assembly constraint 2023-05-30 12:42:13 +01:00
sbus
scsi scsi: dpt_i2o: Do not process completions with invalid addresses 2023-06-09 10:24:04 +02:00
sfi
sh
siox siox: fix possible memory leak in siox_device_add() 2022-11-25 17:40:23 +01:00
slimbus slimbus: stream: correct presence rate frequencies 2022-11-25 17:40:25 +01:00
sn
soc ARM: ux500: do not directly dereference __iomem 2023-01-18 11:30:41 +01:00
soundwire soundwire: bus_type: fix remove and shutdown support 2022-08-25 11:15:15 +02:00
spi spi: qup: Request DMA before enabling clocks 2023-06-14 10:57:12 +02:00
spmi spmi: Add a check for remove callback when removing a SPMI driver 2023-05-17 11:13:17 +02:00
ssb
staging Revert "staging: rtl8192e: Replace macro RTL_PCI_DEVICE with PCI_DEVICE" 2023-06-14 10:57:15 +02:00
target scsi: target: iscsit: Fix TAS handling during conn cleanup 2023-05-17 11:13:12 +02:00
tc
tee tee: add overflow check in register_shm_helper() 2022-08-25 11:15:48 +02:00
thermal thermal: intel: powerclamp: Fix cur_state for multi package system 2023-03-11 16:32:02 +01:00
thunderbolt thunderbolt: Use const qualifier for ring_interrupt_index 2023-04-05 11:15:35 +02:00
tty tty: serial: fsl_lpuart: use UARTCTRL_TXINV to send break instead of UARTCTRL_SBK 2023-06-09 10:24:03 +02:00
uio uio: uio_dmem_genirq: Fix deadlock between irq config and handling 2023-01-18 11:30:25 +01:00
usb usb: gadget: f_fs: Add unbind event before functionfs_unbind 2023-06-09 10:24:02 +02:00
uwb
vfio vfio: platform: Do not pass return buffer to ACPI _RST method 2023-01-18 11:30:25 +01:00
vhost vhost/vsock: Use kvmalloc/kvfree for larger packets. 2022-10-26 13:19:26 +02:00
video fbcon: Fix null-ptr-deref in soft_cursor 2023-06-09 10:24:04 +02:00
virt vboxguest: Do not use devm for irq 2022-08-25 11:15:43 +02:00
virtio virtio_mmio: Restore guest page size on resume 2022-07-21 21:09:30 +02:00
visorbus
vlynq
vme vme: Fix error not catched in fake_init() 2023-01-18 11:30:28 +01:00
w1 w1: fix WARNING after calling w1_process() 2023-02-06 07:49:40 +01:00
watchdog watchdog: menz069_wdt: fix watchdog initialisation 2023-06-09 10:23:57 +02:00
xen xen/pvcalls-back: fix double frees with pvcalls_new_active_socket() 2023-05-30 12:42:15 +01:00
zorro
Kconfig
Makefile