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android_kernel_oneplus_msm8998/drivers
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Linus Torvalds 2e38839225 n_tty: fix EXTPROC vs ICANON interaction with TIOCINQ (aka FIONREAD) 
commit 966031f340185eddd05affcf72b740549f056348 upstream.

We added support for EXTPROC back in 2010 in commit 26df6d1340 ("tty:
Add EXTPROC support for LINEMODE") and the intent was to allow it to
override some (all?) ICANON behavior.  Quoting from that original commit
message:

         There is a new bit in the termios local flag word, EXTPROC.
         When this bit is set, several aspects of the terminal driver
         are disabled.  Input line editing, character echo, and mapping
         of signals are all disabled.  This allows the telnetd to turn
         off these functions when in linemode, but still keep track of
         what state the user wants the terminal to be in.

but the problem turns out that "several aspects of the terminal driver
are disabled" is a bit ambiguous, and you can really confuse the n_tty
layer by setting EXTPROC and then causing some of the ICANON invariants
to no longer be maintained.

This fixes at least one such case (TIOCINQ) becoming unhappy because of
the confusion over whether ICANON really means ICANON when EXTPROC is set.

This basically makes TIOCINQ match the case of read: if EXTPROC is set,
we ignore ICANON.  Also, make sure to reset the ICANON state ie EXTPROC
changes, not just if ICANON changes.

Fixes: 26df6d1340 ("tty: Add EXTPROC support for LINEMODE")
Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Reported-by: syzkaller <syzkaller@googlegroups.com>
Cc: Jiri Slaby <jslaby@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-02 20:33:28 +01:00
..
accessibility
acpi ACPI: APEI / ERST: Fix missing error handling in erst_reader() 2018-01-02 20:33:19 +01:00
amba
android ANDROID: binder: fix proc->tsk check. 2017-08-30 10:19:26 +02:00
ata libata: drop WARN from protocol error in ata_sff_qc_issue() 2017-12-16 10:33:52 +01:00
atm atm: horizon: Fix irq release error 2017-12-16 10:33:55 +01:00
auxdisplay
base isa: Prevent NULL dereference in isa_bus driver callbacks 2017-12-16 10:33:48 +01:00
bcma bcma: use (get|put)_device when probing/removing device driver 2017-03-12 06:37:30 +01:00
block zram: set physical queue limits to avoid array out of bounds accesses 2017-12-16 10:33:53 +01:00
bluetooth Revert "Bluetooth: btusb: driver to enable the usb-wakeup feature" 2017-12-25 14:22:15 +01:00
bus arm-ccn: perf: Prevent module unload while PMU is in use 2017-12-20 10:04:58 +01:00
cdrom
char ipmi: Stop timers before cleaning up the module 2017-12-16 10:33:56 +01:00
clk clk: tegra: Fix cclk_lp divisor register 2017-12-20 10:04:59 +01:00
clocksource clockevents/drivers/cs5535: Improve resilience to spurious interrupts 2017-10-27 10:23:17 +02:00
connector
cpufreq cpufreq: CPPC: add ACPI_PROCESSOR dependency 2017-10-21 17:09:06 +02:00
cpuidle cpuidle: fix broadcast control when broadcast can not be entered 2017-12-25 14:22:15 +01:00
crypto crypto: crypto4xx - increase context and scatter ring buffer elements 2017-12-25 14:22:14 +01:00
dca
devfreq
dio
dma dmaengine: ti-dma-crossbar: Correct am335x/am43xx mux value type 2017-12-20 10:04:58 +01:00
dma-buf
edac EDAC, i5000, i5400: Fix definition of NRECMEMB register 2017-12-16 10:33:54 +01:00
eisa
extcon extcon: palmas: Check the parent instance to prevent the NULL 2017-11-21 09:21:18 +01:00
firewire
firmware efi/esrt: Cleanup bad memory map log messages 2017-12-20 10:04:56 +01:00
fmc
fpga
gpio gpio: altera: Use handle_level_irq when configured as a level_high 2017-12-16 10:33:51 +01:00
gpu drm/radeon: reinstate oland workaround for sclk 2017-12-20 10:04:55 +01:00
hid HID: xinmo: fix for out of range for THT 2P arcade controller. 2017-12-25 14:22:12 +01:00
hsi
hv Drivers: hv: fcopy: restore correct transfer length 2017-10-12 11:27:33 +02:00
hwmon hwmon: (asus_atk0110) fix uninitialized data access 2017-12-25 14:22:12 +01:00
hwspinlock
hwtracing intel_th: pci: Add Gemini Lake support 2017-12-20 10:04:54 +01:00
i2c i2c: riic: fix restart condition 2017-12-16 10:33:53 +01:00
ide
idle
iio iio: light: fix improper return value 2017-11-30 08:37:27 +00:00
infiniband iw_cxgb4: Only validate the MSN for successful completions 2018-01-02 20:33:22 +01:00
input Input: i8042 - add TUXEDO BU1406 (N24_25BU) to the nomux list 2017-12-20 10:04:53 +01:00
iommu iommu/vt-d: Fix scatterlist offset handling 2017-12-16 10:33:49 +01:00
ipack
irqchip irqchip/crossbar: Fix incorrect type of register size 2017-12-16 10:33:52 +01:00
isdn isdn: kcapi: avoid uninitialized data 2017-12-25 14:22:13 +01:00
leds leds: ktd2692: avoid harmless maybe-uninitialized warning 2017-05-14 13:32:55 +02:00
lguest
lightnvm
macintosh
mailbox mailbox: handle empty message in tx_tick 2017-08-06 19:19:41 -07:00
mcb
md raid5: Set R5_Expanded on parity devices as well as data. 2017-12-20 10:05:00 +01:00
media media: dvb: i2c transfers over usb cannot be done from stack 2017-12-16 10:33:49 +01:00
memory ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure 2017-12-16 10:33:51 +01:00
memstick
message
mfd mfd: twl6040: Fix child-node lookup 2018-01-02 20:33:20 +01:00
misc cxl: Check if vphb exists before iterating over AFU devices 2017-12-25 14:22:08 +01:00
mmc mmc: mediatek: Fixed bug where clock frequency could be set wrong 2017-12-20 10:04:55 +01:00
mtd mtd: nand: Fix writing mtdoops to nand flash. 2017-12-05 11:22:51 +01:00
net net: phy: micrel: ksz9031: reconfigure autoneg after phy autoneg workaround 2018-01-02 20:33:26 +01:00
nfc nfc: fdp: fix NULL pointer dereference 2017-08-06 19:19:40 -07:00
ntb ntb_transport: fix bug calculating num_qps_mw 2017-08-30 10:19:29 +02:00
nubus
nvdimm libnvdimm, namespace: make 'resource' attribute only readable by root 2017-11-30 08:37:23 +00:00
nvme nvme: Fix memory order on async queue deletion 2017-11-24 08:32:25 +01:00
nvmem nvmem: imx-ocotp: Fix wrong register size 2017-08-06 19:19:46 -07:00
of of: device: Export of_device_{get_modalias, uvent_modalias} to modules 2017-07-27 15:06:09 -07:00
oprofile
parisc parisc: Hide Diva-built-in serial aux and graphics card 2018-01-02 20:33:20 +01:00
parport parisc, parport_gsc: Fixes for printk continuation lines 2017-06-17 06:39:37 +02:00
pci PCI / PM: Force devices to D0 in pci_pm_thaw_noirq() 2018-01-02 20:33:20 +01:00
pcmcia
perf
phy phy: qcom-usb-hs: Add depends on EXTCON 2017-05-14 13:32:57 +02:00
pinctrl pinctrl: st: add irq_request/release_resources callbacks 2017-12-25 14:22:11 +01:00
platform platform/x86: hp-wmi: Do not shadow error values 2017-11-15 17:13:11 +01:00
pnp
power power: supply: bq24190_charger: Handle fault before status on interrupt 2017-05-14 13:32:54 +02:00
powercap
pps
ps3
ptp
pwm pwm: pca9685: Fix period change with same duty cycle 2017-03-15 09:57:14 +08:00
rapidio
ras
regulator regulator: fan53555: fix I2C device ids 2017-11-02 09:40:50 +01:00
remoteproc
reset
rpmsg
rtc rtc: set the alarm to the next expiring timer 2017-12-25 14:22:15 +01:00
s390 s390/qeth: no ETH header for outbound AF_IUCV 2017-12-25 14:22:12 +01:00
sbus
scsi scsi: lpfc: PLOGI failures during NPIV testing 2017-12-25 14:22:15 +01:00
sfi
sh
sn
soc
spi spi: xilinx: Detect stall with Unknown commands 2018-01-02 20:33:21 +01:00
spmi spmi: Include OF based modalias in device uevent 2017-07-27 15:06:10 -07:00
ssb
staging vt6655: Fix a possible sleep-in-atomic bug in vt6655_suspend 2017-12-20 10:05:01 +01:00
target target/file: Do not return error for UNMAP if length is zero 2017-12-20 10:04:58 +01:00
tc
thermal thermal: hisilicon: Handle return value of clk_prepare_enable 2017-12-25 14:22:15 +01:00
thunderbolt
tty n_tty: fix EXTPROC vs ICANON interaction with TIOCINQ (aka FIONREAD) 2018-01-02 20:33:28 +01:00
uio
usb usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201 2018-01-02 20:33:28 +01:00
uwb uwb: ensure that endpoint is interrupt 2017-10-12 11:27:35 +02:00
vfio vfio-pci: Handle error from pci_iomap 2017-08-06 19:19:46 -07:00
vhost fix a page leak in vhost_scsi_iov_to_sgl() error recovery 2017-11-30 08:37:22 +00:00
video backlight: pwm_bl: Fix overflow condition 2017-12-25 14:22:13 +01:00
virt
virtio virtio: release virtio index when fail to device_register 2017-12-16 10:33:48 +01:00
vlynq
vme
w1 w1: ds2490: USB transfer buffers need to be DMAable 2017-03-12 06:37:29 +01:00
watchdog watchdog: kempld: fix gcc-4.3 build 2017-10-21 17:09:04 +02:00
xen xen: xenbus driver must not accept invalid transaction ids 2017-11-30 08:37:28 +00:00
zorro
Kconfig
Makefile usb: Make sure usb/phy/of gets built-in 2017-05-20 14:26:59 +02:00