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Jiri Slaby 21275a4312 vt: selection, handle pending signals in paste_selection 
commit 687bff0cd0 upstream.

When pasting a selection to a vt, the task is set as INTERRUPTIBLE while
waiting for a tty to unthrottle. But signals are not handled at all.
Normally, this is not a problem as tty_ldisc_receive_buf receives all
the goods and a user has no reason to interrupt the task.

There are two scenarios where this matters:
1) when the tty is throttled and a signal is sent to the process, it
   spins on a CPU until the tty is unthrottled. schedule() does not
   really echedule, but returns immediately, of course.
2) when the sel_buffer becomes invalid, KASAN prevents any reads from it
   and the loop simply does not proceed and spins forever (causing the
   tty to throttle, but the code never sleeps, the same as above). This
   sometimes happens as there is a race in the sel_buffer handling code.

So add signal handling to this ioctl (TIOCL_PASTESEL) and return -EINTR
in case a signal is pending.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200210081131.23572-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2020-02-28 17:22:14 +01:00
..
accessibility
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acpi ACPI: button: Add DMI quirk for Razer Blade Stealth 13 late 2019 lid switch 2020-02-24 08:36:43 +01:00
amba
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android binder: fix log spam for existing debugfs file creation. 2020-02-01 09:34:35 +00:00
ata libata: Fix retrieving of active qcs 2020-01-09 10:19:59 +01:00
atm fore200e: Fix incorrect checks of NULL pointer dereference 2020-02-24 08:36:36 +01:00
auxdisplay
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base driver core: platform: fix u32 greater or equal to zero comparison 2020-02-24 08:36:55 +01:00
bcma
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block floppy: check FDC index for errors before assigning it 2020-02-28 17:22:14 +01:00
bluetooth Bluetooth: btusb: Disable runtime suspend on Realtek devices 2020-02-11 04:35:09 -08:00
bus bus: ti-sysc: Implement quirk handling for CLKDM_NOAUTO 2020-02-24 08:36:35 +01:00
cdrom cdrom: respect device capabilities during opening action 2020-01-04 19:18:25 +01:00
char tpm: Initialize crypto_id of allocated_banks to HASH_ALGO__LAST 2020-02-28 17:22:13 +01:00
clk clk: uniphier: Add SCSSI clock gate for each channel 2020-02-24 08:36:42 +01:00
clocksource clocksource: davinci: only enable clockevents once tim34 is initialized 2020-02-24 08:36:46 +01:00
connector
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counter
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cpufreq cpufreq: Avoid creating excessively large stack frames 2020-02-11 04:35:25 -08:00
cpuidle cpuidle: teo: Avoid using "early hits" incorrectly 2020-02-05 21:22:52 +00:00
crypto crypto: chtls - Fixed memory leak 2020-02-24 08:36:40 +01:00
dax
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dca
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devfreq PM / devfreq: rk3399_dmc: Add COMPILE_TEST and HAVE_ARM_SMCCC dependency 2020-02-24 08:36:41 +01:00
dio
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dma dmaengine: imx-sdma: Fix memory leak 2020-02-24 08:36:40 +01:00
dma-buf
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edac EDAC/sifive: Fix return value check in ecc_register() 2020-02-24 08:36:51 +01:00
eisa
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extcon extcon-intel-cht-wc: Don't reset USB data connection at probe 2020-02-01 09:34:46 +00:00
firewire net: add annotations on hh->hh_len lockless accesses 2020-01-09 10:20:06 +01:00
firmware firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT 2020-01-26 10:01:07 +01:00
fpga
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fsi fsi: core: Fix small accesses and unaligned offsets via sysfs 2019-12-31 16:45:09 +01:00
gnss
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gpio gpiolib: Set lockdep class for hierarchical irq domains 2020-02-24 08:36:49 +01:00
gpu drm/amdgpu/display: handle multiple numbers of fclks in dcn_calcs.c (v2) 2020-02-24 08:37:03 +01:00
greybus
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hid HID: steam: Fix input device disappearing 2020-02-01 09:34:46 +00:00
hsi
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hv hv_balloon: Balloon up according to request page number 2020-02-11 04:35:21 -08:00
hwmon hwmon: (pmbus/ltc2978) Fix PMBus polling of MFR_COMMON definitions. 2020-02-19 19:53:07 +01:00
hwspinlock
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hwtracing intel_th: msu: Fix window switching without windows 2019-12-31 16:46:09 +01:00
i2c i2c: stm32f7: report dma error during probe 2020-01-26 10:01:06 +01:00
i3c
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ide ide: serverworks: potential overflow in svwks_set_pio_mode() 2020-02-24 08:36:53 +01:00
idle
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iio iio: st_gyro: Correct data for LSM9DS0 gyro 2020-02-01 09:34:36 +00:00
infiniband RDMA/mlx5: Don't fake udata for kernel path 2020-02-24 08:36:51 +01:00
input Input: edt-ft5x06 - work around first register access error 2020-02-24 08:36:45 +01:00
interconnect
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iommu iommu/qcom: Fix bogus detach logic 2020-02-28 17:22:12 +01:00
ipack
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irqchip irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL 2020-02-24 08:37:01 +01:00
isdn
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leds leds: pca963x: Fix open-drain initialization 2020-02-24 08:36:24 +01:00
lightnvm
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macintosh
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mailbox mailbox: imx: Fix Tx doorbell shutdown path 2020-01-04 19:18:30 +01:00
mcb
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md bcache: properly initialize 'path' and 'err' in register_bcache() 2020-02-24 08:37:03 +01:00
media media: uvcvideo: Add a quirk to force GEO GC6500 Camera bits-per-pixel value 2020-02-24 08:36:56 +01:00
memory memory: mtk-smi: Add PM suspend and resume ops 2020-01-17 19:48:59 +01:00
memstick
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message scsi: mptfusion: Fix double fetch bug in ioctl 2020-01-23 08:22:35 +01:00
mfd mfd: max77650: Select REGMAP_IRQ in Kconfig 2020-02-14 16:34:19 -05:00
misc misc: xilinx_sdfec: fix xsdfec_poll()'s return type 2020-02-24 08:36:47 +01:00
mmc mmc: core: Rework wp-gpio handling 2020-02-19 19:53:10 +01:00
mtd mtd: sharpslpart: Fix unsigned comparison to zero 2020-02-14 16:34:18 -05:00
mux
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net e1000e: Use rtnl_lock to prevent race conditions between net and pci/pm 2020-02-28 17:22:14 +01:00
nfc NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add_cpu(). 2020-02-24 08:36:33 +01:00
ntb
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nubus
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nvdimm libnvdimm/btt: fix variable 'rc' set but not used 2020-01-04 19:18:12 +01:00
nvme nvme-pci: remove nvmeq->tags 2020-02-24 08:37:01 +01:00
nvmem nvmem: core: fix memory abort in cleanup path 2020-02-11 04:35:21 -08:00
of of: Add OF_DMA_DEFAULT_COHERENT & select it on powerpc 2020-02-11 04:35:25 -08:00
opp opp: Free static OPPs on errors while adding them 2020-02-24 08:36:34 +01:00
oprofile
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parisc
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parport parport: load lowlevel driver if ports not found 2019-12-31 16:45:25 +01:00
pci PCI: Add DMA alias quirk for PLX PEX NTB 2020-02-24 08:36:37 +01:00
pcmcia
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perf perf/imx_ddr: Fix cpu hotplug state cleanup 2020-02-24 08:36:49 +01:00
phy phy: qualcomm: Adjust indentation in read_poll_timeout 2020-02-11 04:35:45 -08:00
pinctrl pinctrl: sh-pfc: sh7269: Fix CAN function GPIOs 2020-02-24 08:36:41 +01:00
platform platform/x86: intel_mid_powerbtn: Take a copy of ddata 2020-02-14 16:34:12 -05:00
pnp
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power power: supply: ltc2941-battery-gauge: fix use-after-free 2020-02-11 04:35:24 -08:00
powercap powercap: intel_rapl: add NULL pointer check to rapl_mmio_cpu_online() 2020-01-14 20:08:18 +01:00
pps
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ps3
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ptp ptp: free ptp device pin descriptors properly 2020-01-23 08:22:51 +01:00
pwm pwm: Remove set but not set variable 'pwm' 2020-02-24 08:36:53 +01:00
rapidio
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ras
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regulator regulator: core: Fix exported symbols to the exported GPL version 2020-02-24 08:36:54 +01:00
remoteproc remoteproc: Initialize rproc_class before use 2020-02-24 08:36:54 +01:00
reset reset: uniphier: Add SCSSI reset control for each channel 2020-02-24 08:36:41 +01:00
rpmsg rpmsg: char: release allocated memory 2020-01-14 20:08:37 +01:00
rtc rtc: Kconfig: select REGMAP_I2C when necessary 2020-02-24 08:37:03 +01:00
s390 s390/pkey: fix missing length of protected key on return 2020-02-19 19:53:04 +01:00
sbus
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scsi scsi: iscsi: Don't destroy session if there are outstanding connections 2020-02-24 08:36:50 +01:00
sfi
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sh
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siox
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slimbus
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soc soc/tegra: fuse: Correct straps' address for older Tegra124 device trees 2020-02-24 08:36:45 +01:00
soundwire soundwire: intel: fix PDI/stream mapping for Bulk 2019-12-31 16:45:11 +01:00
spi spi: spi-fsl-qspi: Ensure width is respected in spi-mem operations 2020-02-24 08:36:54 +01:00
spmi spmi: pmic-arb: Set lockdep class for hierarchical irq domains 2020-02-19 19:53:07 +01:00
ssb
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staging staging: rtl8188: avoid excessive stack usage 2020-02-24 08:36:44 +01:00
target scsi: RDMA/isert: Fix a recently introduced regression related to logout 2020-01-29 16:45:30 +01:00
tc
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tee tee: optee: Fix compilation issue with nommu 2020-02-05 21:22:49 +00:00
thermal
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thunderbolt thunderbolt: Prevent crash if non-active NVMem file is read 2020-02-28 17:22:13 +01:00
tty vt: selection, handle pending signals in paste_selection 2020-02-28 17:22:14 +01:00
uio uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol() 2020-02-24 08:36:27 +01:00
usb USB: misc: iowarrior: add support for the 100 device 2020-02-28 17:22:14 +01:00
vfio vfio/spapr/nvlink2: Skip unpinning pages on error exit 2020-02-24 08:36:43 +01:00
vhost vhost/vsock: accept only packets with the right dst_cid 2020-01-04 19:19:18 +01:00
video pxa168fb: Fix the function used to release some memory in an error handling path 2020-02-24 08:36:25 +01:00
virt
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virtio virtio_balloon: prevent pfn array overflow 2020-02-24 08:37:03 +01:00
visorbus visorbus: fix uninitialized variable access 2020-02-24 08:36:47 +01:00
vlynq
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vme vme: bridges: reduce stack usage 2020-02-24 08:36:48 +01:00
w1
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watchdog drivers: watchdog: stm32_iwdg: set WDOG_HW_RUNNING at probe 2020-02-14 16:34:18 -05:00
xen xen/balloon: Support xend-based toolstack take two 2020-02-11 04:35:36 -08:00
zorro
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Kconfig
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Makefile
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