Yang Shi e34e744f70 mm: check the return value of lookup_page_ext for all call sites ...

commit f86e427197 upstream.

Per the discussion with Joonsoo Kim [1], we need check the return value
of lookup_page_ext() for all call sites since it might return NULL in
some cases, although it is unlikely, i.e.  memory hotplug.

Tested with ltp with "page_owner=0".

[1] http://lkml.kernel.org/r/20160519002809.GA10245@js1304-P5Q-DELUXE

[akpm@linux-foundation.org: fix build-breaking typos]
[arnd@arndb.de: fix build problems from lookup_page_ext]
  Link: http://lkml.kernel.org/r/6285269.2CksypHdYp@wuerfel
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/1464023768-31025-1-git-send-email-yang.shi@linaro.org
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-11-24 08:32:25 +01:00

..

acpi

Merge branch 'acpi-pci'

2015-11-07 01:30:10 +01:00

asm-generic

mm: add PHYS_PFN, use it in __phys_to_pfn()

2017-11-21 09:21:22 +01:00

clocksource

ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksource

2015-06-02 09:58:18 +01:00

crypto

crypto: ahash - Fix EINPROGRESS notification callback

2017-04-21 09:30:06 +02:00

drm

drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces

2017-04-12 12:38:33 +02:00

dt-bindings

ARM: dts: Fix omap3 off mode pull defines

2017-11-21 09:21:19 +01:00

keys

…

kvm

KVM: arm/arm64: arch_timer: Preserve physical dist. active state on LR.active

2015-11-24 18:07:40 +01:00

linux

mm: check the return value of lookup_page_ext for all call sites

2017-11-24 08:32:25 +01:00

math-emu

…

media

videobuf2-core: Check user space planes array in dqbuf

2016-05-04 14:48:50 -07:00

memory

…

misc

cxl: Allow the kernel to trust that an image won't change on PERST.

2015-08-14 21:32:07 +10:00

net

tcp/dccp: fix other lockdep splats accessing ireq_opt

2017-11-18 11:11:07 +01:00

pcmcia

…

ras

tracing: add trace event for memory-failure

2015-06-24 17:49:43 -07:00

rdma

RDMA/core: Fix incorrect structure packing for booleans

2017-03-12 06:37:29 +01:00

rxrpc

…

scsi

scsi: libiscsi: add lock around task lists to fix list corruption regression

2017-03-26 12:13:19 +02:00

soc

ARM: at91: define LPDDR types

2017-03-12 06:37:24 +01:00

sound

ALSA: seq: Avoid invalid lockdep class warning

2017-11-15 17:13:12 +01:00

target

target/iscsi: Fix iSCSI task reassignment handling

2017-11-18 11:11:07 +01:00

trace

tracing: Add #undef to fix compile error

2017-03-18 19:09:57 +08:00

uapi

uapi: fix linux/rds.h userspace compilation errors

2017-11-21 09:21:23 +01:00

video

drm/imx: Match imx-ipuv3-crtc components using device node in platform data

2016-06-07 18:14:37 -07:00

xen

fix xen_swiotlb_dma_mmap prototype

2017-10-05 09:41:48 +02:00

Kbuild

UAPI: remove empty Kbuild files

2013-04-30 17:04:09 -07:00