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3d887dc577be9782a468c6727d961a177eda42f3
linux/drivers
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Geert Uytterhoeven 3d887dc577 auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string 
[ Upstream commit afcb5a811f ]

While writing an empty string to a device attribute is a no-op, and thus
does not need explicit safeguards, the user can still write a single
newline to an attribute file:

    echo > .../message

If that happens, img_ascii_lcd_display() trims the newline, yielding an
empty string, and causing an infinite loop in img_ascii_lcd_scroll().

Fix this by adding a check for empty strings.  Clear the display in case
one is encountered.

Fixes: 0cad855fbd ("auxdisplay: img-ascii-lcd: driver for simple ASCII LCD displays")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-11-26 11:36:14 +01:00
..
accessibility
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acpi
ACPI: battery: Accept charges over the design capacity as full
2021-11-26 11:36:05 +01:00
amba
ARM: 9120/1: Revert "amba: make use of -1 IRQs warn"
2021-11-06 13:58:45 +01:00
android
binder: use cred instead of task for selinux checks
2021-11-26 11:35:56 +01:00
ata
libata: fix checking of DMA state
2021-11-26 11:36:01 +01:00
atm
atm: nicstar: register the interrupt handler in the right place
2021-07-20 16:16:01 +02:00
auxdisplay
auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string
2021-11-26 11:36:14 +01:00
base
regmap: Fix possible double-free in regcache_rbtree_exit()
2021-11-02 18:26:45 +01:00
bcma
bcma: Fix memory leak for internally-handled cores
2021-09-22 11:47:55 +02:00
block
cryptoloop: add a deprecation warning
2021-09-22 11:47:46 +02:00
bluetooth
Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc.
2021-07-20 16:16:03 +02:00
bus
bus: qcom: Put child node before return
2021-05-22 10:59:29 +02:00
cdrom
cdrom: gdrom: initialize global variable at init time
2021-05-26 11:48:34 +02:00
char
hwrng: mtk - Force runtime pm ops for sleep ops
2021-11-26 11:36:09 +01:00
clk
clk: kirkwood: Fix a clocking boot regression
2021-09-22 11:47:57 +02:00
clocksource
clocksource/drivers/timer-ti-dm: Select TIMER_OF
2021-11-26 11:36:10 +01:00
connector
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cpufreq
cpufreq: schedutil: Destroy mutex before kobject_put() frees the memory
2021-10-06 15:31:21 +02:00
cpuidle
cpuidle: Fix kobject memory leaks in error paths
2021-11-26 11:36:08 +01:00
crypto
crypto: qat - disregard spurious PFVF interrupts
2021-11-26 11:36:08 +01:00
dax
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dca
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devfreq
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dio
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dma
dmaengine: at_xdmac: fix AT_XDMAC_CC_PERID() macro
2021-11-26 11:36:14 +01:00
dma-buf
dma-buf/sync_file: Don't leak fences on merge failure
2021-07-28 11:13:45 +02:00
edac
EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell
2021-11-26 11:36:00 +01:00
eisa
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extcon
extcon: max8997: Add missing modalias string
2021-07-20 16:15:57 +02:00
firewire
firewire: nosy: Fix a use-after-free bug in nosy_ioctl()
2021-04-07 12:48:50 +02:00
firmware
firmware/psci: fix application of sizeof to pointer
2021-11-26 11:35:57 +01:00
fmc
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fpga
fpga: machxo2-spi: Fix missing error code in machxo2_write_complete()
2021-10-06 15:31:14 +02:00
fsi
fsi/sbefifo: Fix reset timeout
2021-07-20 16:15:55 +02:00
gnss
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gpio
gpio: uniphier: Fix void functions to remove return value
2021-10-06 15:31:13 +02:00
gpu
drm/plane-helper: fix uninitialized variable reference
2021-11-26 11:36:14 +01:00
hid
HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS
2021-10-17 10:19:48 +02:00
hsi
HSI: core: fix resource leaks in hsi_add_client_from_dt()
2021-05-22 10:59:34 +02:00
hv
hyperv/vmbus: include linux/bitops.h
2021-11-26 11:35:59 +01:00
hwmon
hwmon: (pmbus/lm25066) Let compiler determine outer dimension of lm25066_coeff
2021-11-26 11:36:09 +01:00
hwspinlock
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hwtracing
intel_th: Wait until port is in reset before programming it
2021-07-20 16:16:10 +02:00
i2c
i2c: acpi: fix resource leak in reconfiguration device addition
2021-10-13 10:10:52 +02:00
ide
block: genhd: add 'groups' argument to device_add_disk
2021-03-11 14:04:59 +01:00
idle
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iio
iio: dac: ad5446: Fix ad5622_write() return value
2021-11-26 11:36:03 +01:00
infiniband
RDMA/mlx4: Return missed an error if device doesn't support steering
2021-11-26 11:36:13 +01:00
input
Input: i8042 - Add quirk for Fujitsu Lifebook T725
2021-11-26 11:35:57 +01:00
iommu
iommu/vt-d: Fix agaw for a supported 48 bit guest address width
2021-08-26 08:36:42 -04:00
ipack
ipack: ipoctal: fix module reference leak
2021-10-06 15:31:25 +02:00
irqchip
ARM: s3c: irq-s3c24xx: Fix return value check for s3c24xx_init_intc()
2021-11-26 11:36:12 +01:00
isdn
isdn: mISDN: Fix sleeping function called from invalid context
2021-10-27 09:53:15 +02:00
leds
leds: ktd2692: Fix an error handling path
2021-07-20 16:15:57 +02:00
lightnvm
lightnvm: select CONFIG_CRC32
2021-01-17 14:04:22 +01:00
macintosh
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mailbox
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mcb
mcb: fix error handling in mcb_alloc_bus()
2021-10-06 15:31:12 +02:00
md
md: fix a lock order reversal in md_alloc
2021-10-06 15:31:15 +02:00
media
media: dvb-frontends: mn88443x: Handle errors of clk_prepare_enable()
2021-11-26 11:36:08 +01:00
memory
memory: fsl_ifc: fix leak of irq and nand_irq in fsl_ifc_ctrl_probe
2021-11-26 11:36:13 +01:00
memstick
memstick: jmb38x_ms: use appropriate free function in jmb38x_ms_alloc_host()
2021-11-26 11:36:09 +01:00
message
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mfd
mfd: axp20x: Update AXP288 volatile ranges
2021-09-22 11:48:13 +02:00
misc
cb710: avoid NULL pointer subtraction
2021-10-20 11:23:02 +02:00
mmc
mmc: mxs-mmc: disable regulator on error and in the remove function
2021-11-26 11:36:10 +01:00
mtd
mtd: spi-nor: hisi-sfc: Remove excessive clk_disable_unprepare()
2021-11-26 11:36:14 +01:00
mux
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net
ibmvnic: Process crqs after enabling interrupts
2021-11-26 11:36:11 +01:00
nfc
nfc: port100: fix using -ERRNO as command type mask
2021-11-02 18:26:44 +01:00
ntb
NTB: perf: Fix an error code in perf_setup_inbuf()
2021-09-22 11:48:13 +02:00
nubus
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nvdimm
block: genhd: add 'groups' argument to device_add_disk
2021-03-11 14:04:59 +01:00
nvme
nvme-rdma: fix error code in nvme_rdma_setup_ctrl
2021-11-26 11:36:10 +01:00
nvmem
nvmem: Fix shift-out-of-bound (UBSAN) with byte size cells
2021-10-20 11:23:02 +02:00
of
of: Don't allow __of_attached_node_sysfs() without CONFIG_SYSFS
2021-09-22 11:48:07 +02:00
opp
opp: remove WARN when no valid OPPs remain
2021-09-03 09:58:01 +02:00
oprofile
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parisc
parisc: Move pci_dev_is_behind_card_dino to where it is used
2021-09-26 13:39:48 +02:00
parport
parport: remove non-zero check on count
2021-09-22 11:48:08 +02:00
pci
PCI: aardvark: Don't spam about PIO Response Status
2021-11-26 11:36:14 +01:00
pcmcia
pcmcia: i82092: fix a null pointer dereference bug
2021-08-12 13:19:43 +02:00
perf
perf/arm_pmu_platform: Fix error handling
2021-05-22 10:59:15 +02:00
phy
phy: qcom-qusb2: Fix a memory leak on probe
2021-11-26 11:36:13 +01:00
pinctrl
pinctrl: core: fix possible memory leak in pinctrl_enable()
2021-11-26 11:36:03 +01:00
platform
platform/x86: thinkpad_acpi: Fix bitwise vs. logical warning
2021-11-26 11:36:10 +01:00
pnp
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power
power: supply: bq27xxx: Fix kernel crash on IRQ handler register error
2021-11-26 11:36:14 +01:00
powercap
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pps
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ps3
powerpc/ps3: use dma_mapping_error()
2020-12-30 11:26:04 +01:00
ptp
ptp_pch: Load module automatically if ID matches
2021-10-13 10:10:51 +02:00
pwm
pwm: stm32-lp: Don't modify HW state in .remove() callback
2021-09-26 13:39:49 +02:00
rapidio
rapidio: handle create_workqueue() failure
2021-05-26 11:48:33 +02:00
ras
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regulator
regulator: s5m8767: do not use reset value as DVS voltage if GPIO DVS is disabled
2021-11-26 11:36:00 +01:00
remoteproc
remoteproc: qcom_q6v5_mss: Validate MBA firmware size before load
2021-02-13 13:51:14 +01:00
reset
reset: ti-syscon: fix to_ti_syscon_reset_data macro
2021-07-28 11:13:42 +02:00
rpmsg
rpmsg: qcom_glink_native: fix error return code of qcom_glink_rx_data()
2021-05-22 10:59:42 +02:00
rtc
rtc: tps65910: Correct driver module alias
2021-09-22 11:47:57 +02:00
s390
s390/cio: add dev_busid sysfs entry for each subchannel
2021-09-22 11:47:50 +02:00
sbus
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scsi
scsi: csiostor: Uninitialized data in csio_ln_vnp_read_cbfn()
2021-11-26 11:36:13 +01:00
sfi
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sh
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siox
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slimbus
slimbus: ngd: reset dma setup during runtime pm
2021-08-26 08:36:48 -04:00
sn
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soc
soc/tegra: Fix an error handling path in tegra_powergate_power_up()
2021-11-26 11:36:12 +01:00
soundwire
soundwire: stream: fix memory leak in stream config error path
2021-05-22 10:59:30 +02:00
spi
spi: bcm-qspi: Fix missing clk_disable_unprepare() on error in bcm_qspi_probe()
2021-11-26 11:36:07 +01:00
spmi
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ssb
ssb: Fix error return code in ssb_bus_scan()
2021-07-20 16:15:50 +02:00
staging
staging: rtl8192u: fix control-message timeouts
2021-11-12 14:40:52 +01:00
target
scsi: target: Fix protect handling in WRITE SAME(32)
2021-07-28 11:13:48 +02:00
tc
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tee
optee: Clear stale cache entries during initialization
2021-08-12 13:19:42 +02:00
thermal
thermal/core: Potential buffer overflow in thermal_build_list_of_policies()
2021-10-06 15:31:15 +02:00
thunderbolt
thunderbolt: dma_port: Fix NVM read buffer bounds and offset issue
2021-06-03 08:38:04 +02:00
tty
serial: xilinx_uartps: Fix race condition causing stuck TX
2021-11-26 11:36:13 +01:00
uio
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usb
usb: gadget: hid: fix error code in do_config()
2021-11-26 11:36:13 +01:00
uwb
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vfio
vfio: Use config not menuconfig for VFIO_NOIOMMU
2021-09-22 11:48:01 +02:00
vhost
vringh: Use wiov->used to check for read/write desc order
2021-09-03 09:58:02 +02:00
video
video: fbdev: chipsfb: use memset_io() instead of memset()
2021-11-26 11:36:13 +01:00
virt
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virtio
virtio: write back F_VERSION_1 before validate
2021-10-20 11:23:02 +02:00
visorbus
visorbus: fix error return code in visorchipset_init()
2021-07-20 16:15:55 +02:00
vlynq
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vme
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w1
w1: ds2438: fixing bug that would always get page0
2021-07-20 16:16:07 +02:00
watchdog
watchdog: Fix OMAP watchdog early handling
2021-11-26 11:35:59 +01:00
xen
xen/balloon: add late_initcall_sync() for initial ballooning done
2021-11-26 11:36:02 +01:00
zorro
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Kconfig
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Makefile
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