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Tetsuo Handa 3d63b7e4ae n_tty: Fix stall at n_tty_receive_char_special(). 
syzbot is reporting stalls at n_tty_receive_char_special() [1]. This is
because comparison is not working as expected since ldata->read_head can
change at any moment. Mitigate this by explicitly masking with buffer size
when checking condition for "while" loops.

[1] https://syzkaller.appspot.com/bug?id=3d7481a346958d9469bebbeb0537d5f056bdd6e8

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+18df353d7540aa6b5467@syzkaller.appspotmail.com>
Fixes: bc5a5e3f45d04784 ("n_tty: Don't wrap input buffer indices at buffer size")
Cc: stable <stable@vger.kernel.org>
Cc: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-06-28 21:30:16 +09:00
..
accessibility
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acpi
Merge branches 'acpi-soc' and 'acpi-processor'
2018-06-21 14:19:08 +02:00
amba
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
2018-06-06 13:49:25 -07:00
android
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
ata
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
atm
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
auxdisplay
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
base
Power management changes for 4.18-rc2
2018-06-22 05:57:36 +09:00
bcma
dma-mapping updates for 4.18:
2018-06-04 10:58:12 -07:00
block
for-linus-20180623
2018-06-24 06:33:54 +08:00
bluetooth
bluetooth: hci_nokia: Don't include linux/unaligned/le_struct.h directly.
2018-06-17 08:38:55 +09:00
bus
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
cdrom
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
char
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2018-06-24 06:31:54 +08:00
clk
docs: Fix some broken references
2018-06-15 18:10:01 -03:00
clocksource
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-06-24 19:16:42 +08:00
connector
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
cpufreq
cpufreq: intel_pstate: Fix scaling max/min limits with Turbo 3.0
2018-06-19 10:40:29 +02:00
cpuidle
powerpc updates for 4.18
2018-06-07 10:23:33 -07:00
crypto
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2018-06-24 06:31:54 +08:00
dax
libnvdimm for 4.18
2018-06-08 17:21:52 -07:00
dca
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devfreq
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
dio
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dma
fix a series of Documentation/ broken file name references
2018-06-15 18:10:01 -03:00
dma-buf
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edac
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
eisa
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extcon
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
firewire
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
firmware
efi/libstub/tpm: Initialize efi_physical_addr_t vars to zero for mixed mode
2018-06-22 10:58:27 +02:00
fmc
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
fpga
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fsi
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gpio
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
gpu
Fixes for v4.18-rc2:
2018-06-22 11:03:43 +10:00
hid
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
2018-06-20 16:42:39 +09:00
hsi
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hv
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
hwmon
hwmon: (nct6775) Fix loop limit
2018-06-16 16:40:36 -07:00
hwspinlock
hwspinlock updates for v4.18
2018-06-11 12:09:19 -07:00
hwtracing
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
i2c
Merge branch 'i2c/for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2018-06-14 16:21:46 +09:00
ide
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
idle
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iio
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
infiniband
4.18-rc
2018-06-21 07:22:30 +09:00
input
docs: Fix some broken references
2018-06-15 18:10:01 -03:00
iommu
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
ipack
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
irqchip
irqchip/gic-v3-its: Fix reprogramming of redistributors on CPU hotplug
2018-06-22 14:22:02 +02:00
isdn
treewide: Use array_size() in vmalloc()
2018-06-12 16:19:22 -07:00
leds
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
lightnvm
for-linus-20180623
2018-06-24 06:33:54 +08:00
macintosh
powerpc updates for 4.18
2018-06-07 10:23:33 -07:00
mailbox
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
mcb
…
md
docs: Fix some broken references
2018-06-15 18:10:01 -03:00
media
Solve a series of broken links for files under Documentation:
2018-06-17 05:25:18 +09:00
memory
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
memstick
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
message
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
mfd
Merge branch 'i2c/for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2018-06-14 16:21:46 +09:00
misc
Merge branch 'i2c/for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2018-06-14 16:21:46 +09:00
mmc
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
mtd
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
mux
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net
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-06-21 07:13:42 +09:00
nfc
treewide: devm_kmalloc() -> devm_kmalloc_array()
2018-06-12 16:19:22 -07:00
ntb
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
nubus
Char/Misc driver patches for 4.18-rc1
2018-06-05 16:20:22 -07:00
nvdimm
Merge branch 'for-4.18/mcsafe' into libnvdimm-for-next
2018-06-08 15:16:44 -07:00
nvme
nvme-pci: limit max IO size and segments to avoid high order allocations
2018-06-21 18:59:46 +02:00
nvmem
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
of
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
opp
PM / OPP: Update voltage in case freq == old_freq
2018-06-19 15:53:32 +05:30
oprofile
treewide: Use array_size() in vmalloc()
2018-06-12 16:19:22 -07:00
parisc
dma-mapping updates for 4.18:
2018-06-04 10:58:12 -07:00
parport
docs: Fix some broken references
2018-06-15 18:10:01 -03:00
pci
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
pcmcia
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
perf
drivers/bus: arm-cci: fix build warnings
2018-05-29 16:38:16 +01:00
phy
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
pinctrl
pinctrl: mt7622: fix a kernel panic when pio don't work as EINT controller
2018-06-18 07:55:57 +02:00
platform
fix a series of Documentation/ broken file name references
2018-06-15 18:10:01 -03:00
pnp
media updates for v4.18-rc1
2018-06-07 12:34:37 -07:00
power
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
powercap
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
pps
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ps3
…
ptp
ptp: replace getnstimeofday64() with ktime_get_real_ts64()
2018-06-20 07:59:53 +09:00
pwm
pwm: Changes for v4.18-rc1
2018-06-14 16:25:43 +09:00
rapidio
treewide: Use array_size() in vmalloc()
2018-06-12 16:19:22 -07:00
ras
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regulator
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
remoteproc
treewide: use PHYS_ADDR_MAX to avoid type casting ULLONG_MAX
2018-06-15 07:55:25 +09:00
reset
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
rpmsg
rpmsg: smd: do not use mananged resources for endpoints and channels
2018-06-04 12:35:03 -07:00
rtc
- New Device Support
2018-06-11 07:20:17 -07:00
s390
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2018-06-19 07:44:51 +09:00
sbus
fix a series of Documentation/ broken file name references
2018-06-15 18:10:01 -03:00
scsi
for-linus-20180623
2018-06-24 06:33:54 +08:00
sfi
…
sh
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
siox
…
slimbus
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
sn
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soc
treewide: use PHYS_ADDR_MAX to avoid type casting ULLONG_MAX
2018-06-15 07:55:25 +09:00
soundwire
docs: Fix more broken references
2018-06-15 18:11:26 -03:00
spi
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
spmi
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ssb
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staging
media: v4l: fix broken video4linux docs locations
2018-06-15 18:10:01 -03:00
target
treewide: Use array_size() in vzalloc()
2018-06-12 16:19:22 -07:00
tc
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tee
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thermal
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
thunderbolt
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tty
n_tty: Fix stall at n_tty_receive_char_special().
2018-06-28 21:30:16 +09:00
uio
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
usb
vfs/y2038: inode timestamps conversion to timespec64
2018-06-15 07:31:07 +09:00
uwb
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
vfio
VFIO updates for v4.18
2018-06-12 13:11:26 -07:00
vhost
virtio, vhost: features, fixes
2018-06-16 06:35:02 +09:00
video
Solve a series of broken links for files under Documentation:
2018-06-17 05:25:18 +09:00
virt
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
virtio
virtio, vhost: features, fixes
2018-06-16 06:35:02 +09:00
visorbus
…
vlynq
…
vme
…
w1
Char/Misc driver patches for 4.18-rc1
2018-06-05 16:20:22 -07:00
watchdog
MIPS changes for 4.18
2018-06-12 12:56:02 -07:00
xen
xen: fixes for 4.18-rc2
2018-06-23 20:44:11 +08:00
zorro
- Introduce arithmetic overflow test helper functions (Rasmus)
2018-06-06 17:27:14 -07:00
Kconfig
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Makefile
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