Michal Hocko d75da004c7 oom: improve oom disable handling ... Tetsuo has reported that sysrq triggered OOM killer will print a misleading information when no tasks are selected: sysrq: SysRq : Manual OOM execution Out of memory: Kill process 4468 ((agetty)) score 0 or sacrifice child Killed process 4468 ((agetty)) total-vm:43704kB, anon-rss:1760kB, file-rss:0kB, shmem-rss:0kB sysrq: SysRq : Manual OOM execution Out of memory: Kill process 4469 (systemd-cgroups) score 0 or sacrifice child Killed process 4469 (systemd-cgroups) total-vm:10704kB, anon-rss:120kB, file-rss:0kB, shmem-rss:0kB sysrq: SysRq : Manual OOM execution sysrq: OOM request ignored because killer is disabled sysrq: SysRq : Manual OOM execution sysrq: OOM request ignored because killer is disabled sysrq: SysRq : Manual OOM execution sysrq: OOM request ignored because killer is disabled The real reason is that there are no eligible tasks for the OOM killer to select but since commit 7c5f64f844 ("mm: oom: deduplicate victim selection code for memcg and global oom") the semantic of out_of_memory has changed without updating moom_callback. This patch updates moom_callback to tell that no task was eligible which is the case for both oom killer disabled and no eligible tasks. In order to help distinguish first case from the second add printk to both oom_killer_{enable,disable}. This information is useful on its own because it might help debugging potential memory allocation failures. Fixes: 7c5f64f844 ("mm: oom: deduplicate victim selection code for memcg and global oom") Link: http://lkml.kernel.org/r/20170404134705.6361-1-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-05-03 15:52:10 -07:00
..
accessibility	…
acpi	- constify compression structures; Bhumika Goyal	2017-05-02 10:35:45 -07:00
amba	…
android	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>	2017-03-02 08:42:29 +01:00
ata	Merge branch 'for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata	2017-05-01 13:34:49 -07:00
atm	ambassador: use setup_timer	2017-03-12 23:47:16 -07:00
auxdisplay	auxdisplay: img-ascii-lcd: add missing sentinel entry in img_ascii_lcd_matches	2017-03-16 16:59:55 +09:00
base	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 15:46:13 -07:00
bcma	bcma: fill core OF info independently of bus type	2017-03-20 19:12:01 +02:00
block	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
bluetooth	Bluetooth: hci_ldisc: Add protocol check to hci_uart_tx_wakeup()	2017-04-30 12:22:14 +02:00
bus	ARM: SoC driver updates	2017-02-23 15:57:04 -08:00
cdrom	scsi: introduce a result field in struct scsi_request	2017-04-20 12:16:10 -06:00
char	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2017-05-03 08:50:52 -07:00
clk	MMC core:	2017-05-02 17:34:32 -07:00
clocksource	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 16:15:18 -07:00
connector	…
cpufreq	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 19:12:53 -07:00
cpuidle	Merge branches 'pm-cpuidle', 'pm-core', 'pm-domains', 'pm-avs' and 'pm-devfreq'	2017-04-28 23:15:34 +02:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2017-05-02 15:53:46 -07:00
dax	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 23:54:56 -07:00
dca	…
devfreq	PM / devfreq: Move struct devfreq_governor to devfreq directory	2017-04-12 12:42:14 +09:00
dio	…
dma	dmaengine: Fix array index out of bounds warning in __get_unmap_pool()	2017-03-14 10:11:27 +05:30
dma-buf	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
edac	EDAC, ghes: Do not enable it by default	2017-04-27 14:15:38 +02:00
eisa	…
extcon	extcon: Add new extcon_register_notifier_all() to monitor all external connectors	2017-04-04 11:22:42 +09:00
firewire	Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax	2017-02-28 20:29:41 -08:00
firmware	- constify compression structures; Bhumika Goyal	2017-05-02 10:35:45 -07:00
fmc	…
fpga	fpga zynq: Use the scatterlist interface	2017-02-10 15:20:44 +01:00
fsi	drivers/fsi: add driver to device matches	2017-02-10 15:19:48 +01:00
gpio	ACPI / gpio: do not fall back to parsing _CRS when we get a deferral	2017-03-30 11:08:46 +02:00
gpu	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
hsi	HSI: ssi_protocol: double free in ssip_pn_xmit()	2017-04-21 17:58:45 +02:00
hv	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
hwmon	hwmon: (twl4030-madc) drop driver	2017-04-30 11:45:31 -07:00
hwspinlock	…
hwtracing	Merge branch 'linus' into perf/core, to pick up fixes	2017-03-30 09:48:58 +02:00
i2c	i2c: mux: pca954x: Add missing pca9546 definition to chip_desc	2017-03-24 12:22:18 +01:00
ide	ide-pm: always pass 0 error to ide_complete_rq in ide_do_devset	2017-04-26 07:53:35 -06:00
idle	Power management turbostat utility updates for v4.11-rc1	2017-03-02 17:41:27 -08:00
iio	iio: hid-sensor-attributes: Fix sensor property setting failure.	2017-04-02 11:44:03 +01:00
infiniband	hw/mlx5: Add New bit to check over QP creation	2017-04-17 11:08:32 -04:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2017-04-28 11:08:42 -07:00
iommu	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2017-05-02 09:50:09 -07:00
ipack	…
irqchip	irqchip/mbigen: Fix return value check in mbigen_device_probe()	2017-04-30 11:21:16 +02:00
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-06 08:24:51 -07:00
leds	leds: pca9532: Extend pca9532 device tree support	2017-04-19 20:27:50 +02:00
lguest	x86: Remap GDT tables in the fixmap section	2017-03-16 09:06:35 +01:00
lightnvm	lightnvm: fix possible memory leak in pblk_bb_discovery()	2017-04-25 10:44:29 -06:00
macintosh	drivers: Clean up duplicated email address	2017-03-24 15:49:56 +01:00
mailbox	mailbox: handle empty message in tx_tick	2017-04-27 16:20:04 +05:30
mcb	…
md	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
media	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
memory	Linux 4.11-rc1	2017-03-06 08:37:53 -08:00
memstick	Merge branch 'for-4.11/next' into for-4.11/linus-merge	2017-02-17 14:08:19 -07:00
message	SCSI misc on 20170220	2017-02-21 11:51:42 -08:00
mfd	staging/iio driver patches for 4.11-rc1	2017-02-22 12:14:01 -08:00
misc	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
mmc	MMC core:	2017-05-02 17:34:32 -07:00
mtd	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
net	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
nfc	nfc: fix get_unaligned_...() misuses	2017-04-17 00:42:22 +02:00
ntb	ntb: ntb_hw_intel: link_poll isn't clearing the pending status properly	2017-02-16 23:11:26 -05:00
nubus	nubus: Clean up whitespace	2017-04-20 09:54:24 +02:00
nvdimm	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 23:54:56 -07:00
nvme	Merge branch 'for-4.12/block' of git://git.kernel.dk/linux-block	2017-05-01 10:39:57 -07:00
nvmem	…
of	mdio_bus: Issue GPIO RESET to PHYs.	2017-04-24 12:40:24 -04:00
oprofile	sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h>	2017-03-02 08:42:40 +01:00
parisc	Merge branch 'parisc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux	2017-03-03 16:20:06 -08:00
parport	parport: fix attempt to write duplicate procfiles	2017-03-16 17:32:21 +09:00
pci	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
pcmcia	…
perf	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>	2017-03-02 08:42:27 +01:00
phy	phy: qcom-usb-hs: Add depends on EXTCON	2017-03-09 15:29:57 +05:30
pinctrl	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
platform	LED updates for 4.12	2017-05-01 13:12:49 -07:00
pnp	x86: Remap GDT tables in the fixmap section	2017-03-16 09:06:35 +01:00
power	ACPI updates for v4.12-rc1	2017-05-01 14:13:28 -07:00
powercap	…
pps	…
ps3	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>	2017-03-02 08:42:29 +01:00
ptp	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 16:15:18 -07:00
pwm	pwm: rockchip: State of PWM clock should synchronize with PWM enabled state	2017-04-06 15:08:52 +02:00
rapidio	drivers/rapidio/devices/tsi721.c: make module parameter variable name unique	2017-03-31 17:13:30 -07:00
ras	RAS: Add a Corrected Errors Collector	2017-03-28 08:54:48 +02:00
regulator	regulator: Updates for v4.11	2017-02-20 17:23:57 -08:00
remoteproc	soc: qcom: smd: Remove standalone driver	2017-03-28 17:58:07 -07:00
reset	reset: add exported __reset_control_get, return NULL if optional	2017-04-04 17:36:10 +02:00
rpmsg	soc: qcom: smd: Remove standalone driver	2017-03-28 17:58:07 -07:00
rtc	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
sbus	jsflash: stop sharing request queue across multiple gendisks	2017-03-28 15:06:58 -06:00
scsi	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
sfi	…
sh	…
sn	…
soc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
spi	sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h>	2017-03-02 08:42:27 +01:00
spmi	…
ssb	…
staging	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
target	Merge branch 'for-4.12/block' of git://git.kernel.dk/linux-block	2017-05-01 10:39:57 -07:00
tc	…
thermal	Merge back cpufreq core changes for v4.12.	2017-04-15 00:23:36 +02:00
thunderbolt	…
tty	oom: improve oom disable handling	2017-05-03 15:52:10 -07:00
uio	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
usb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
uwb	uwb: i1480-dfu: fix NULL-deref at probe	2017-03-14 17:07:31 +08:00
vfio	VFIO fixes for v4.11-rc4	2017-03-24 14:39:36 -07:00
vhost	VSOCK: Add virtio vsock vsockmon hooks	2017-04-24 12:35:56 -04:00
video	backlight: pwm_bl: Fix GPIO out for unimplemented .get_direction()	2017-04-19 19:59:44 +01:00
virt	…
virtio	virtio-pci: Remove affinity hint before freeing the interrupt	2017-04-11 00:30:20 +03:00
vlynq	…
vme	…
w1	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>	2017-03-02 08:42:29 +01:00
watchdog	watchdog: retu: restore MFD dependency	2017-03-01 06:15:10 -08:00
xen	xenbus: remove transaction holder from list before freeing	2017-04-04 10:11:06 -04:00
zorro	…
Kconfig	drivers/fsi: Add empty fsi bus definitions	2017-02-10 15:19:48 +01:00
Makefile	pci-v4.11-changes	2017-02-23 11:53:22 -08:00