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Tetsuo Handa bcdd0ca8cb tty: Use __GFP_NOFAIL for tty_ldisc_get() 
syzbot is reporting crashes triggered by memory allocation fault injection
at tty_ldisc_get() [1]. As an attempt to handle OOM in a graceful way, we
have tried commit 5362544beb ("tty: don't panic on OOM in
tty_set_ldisc()"). But we reverted that attempt by commit a8983d01f9
("Revert "tty: don't panic on OOM in tty_set_ldisc()"") due to reproducible
crash. We should spend resource for finding and fixing race condition bugs
rather than complicate error paths for 2 * sizeof(void *) bytes allocation
failure.

[1] https://syzkaller.appspot.com/bug?id=489d33fa386453859ead58ff5171d43772b13aa3

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+40b7287c2dc987c48c81@syzkaller.appspotmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-25 15:03:44 +02:00
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accessibility
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acpi
Merge tag 'for-linus-4.17-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
2018-04-12 11:04:35 -07:00
amba
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android
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ata
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atm
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auxdisplay
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base
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bcma
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block
Merge tag 'for-linus-20180413' of git://git.kernel.dk/linux-block
2018-04-13 15:15:15 -07:00
bluetooth
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bus
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cdrom
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char
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clk
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
2018-04-13 15:51:06 -07:00
clocksource
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connector
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cpufreq
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cpuidle
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crypto
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devfreq
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dio
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dma
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dma-buf
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edac
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eisa
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extcon
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firewire
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firmware
Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
2018-04-13 16:32:16 -07:00
fmc
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fpga
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fsi
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gpio
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gpu
Merge tag 'drm-fixes-for-v4.17-rc1' of git://people.freedesktop.org/~airlied/linux
2018-04-12 20:56:10 -07:00
hid
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hsi
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hv
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hwmon
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hwspinlock
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hwtracing
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i2c
i2c: add param sanity check to i2c_transfer()
2018-04-11 23:33:46 +02:00
ide
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idle
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iio
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infiniband
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input
Merge tag 'chrome-platform-for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform
2018-04-13 16:20:36 -07:00
iommu
Merge tag 'iommu-updates-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
2018-04-11 18:50:41 -07:00
ipack
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irqchip
Merge tag 'iommu-updates-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
2018-04-11 18:50:41 -07:00
isdn
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leds
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lightnvm
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macintosh
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mailbox
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mcb
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md
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media
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memory
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memstick
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message
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mfd
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misc
Merge tag 'for_linus-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb
2018-04-12 10:21:19 -07:00
mmc
Merge tag 'mmc-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
2018-04-12 10:59:03 -07:00
mtd
Merge tag 'tags/upstream-4.17-rc1' of git://git.infradead.org/linux-ubifs
2018-04-11 16:39:34 -07:00
mux
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net
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-04-12 11:09:05 -07:00
nfc
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ntb
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nubus
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nvdimm
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nvme
nvme: expand nvmf_check_if_ready checks
2018-04-12 09:58:27 -06:00
nvmem
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of
earlycon: Use a pointer table to fix __earlycon_table stride
2018-04-23 10:06:59 +02:00
opp
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oprofile
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parisc
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parport
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pci
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pcmcia
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perf
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phy
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pinctrl
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platform
Merge tag 'chrome-platform-for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform
2018-04-13 16:20:36 -07:00
pnp
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power
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powercap
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pps
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ps3
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ptp
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pwm
Merge tag 'pwm/for-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
2018-04-13 15:46:21 -07:00
rapidio
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ras
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regulator
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remoteproc
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reset
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rpmsg
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rtc
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s390
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2018-04-13 09:43:20 -07:00
sbus
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scsi
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2018-04-15 17:24:12 -07:00
sfi
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sh
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siox
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slimbus
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sn
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soc
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
2018-04-13 15:51:06 -07:00
soundwire
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spi
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spmi
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ssb
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staging
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target
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tc
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tee
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thermal
Merge branches 'thermal-core' and 'thermal-soc' into next
2018-04-13 14:11:53 +08:00
thunderbolt
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tty
tty: Use __GFP_NOFAIL for tty_ldisc_get()
2018-04-25 15:03:44 +02:00
uio
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usb
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uwb
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vfio
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vhost
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video
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virt
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virtio
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
2018-04-11 18:58:27 -07:00
visorbus
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vlynq
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vme
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w1
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watchdog
Merge tag 'linux-watchdog-4.17-rc1' of git://www.linux-watchdog.org/linux-watchdog
2018-04-13 15:43:50 -07:00
xen
Merge tag 'for-linus-4.17-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
2018-04-12 11:04:35 -07:00
zorro
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Kconfig
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Makefile
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