WANG Cong 0e1b4ef27e UPSTREAM: ppp: defer netns reference release for ppp channel ... (cherry pick from commit 205e1e255c479f3fd77446415706463b282f94e4) Matt reported that we have a NULL pointer dereference in ppp_pernet() from ppp_connect_channel(), i.e. pch->chan_net is NULL. This is due to that a parallel ppp_unregister_channel() could happen while we are in ppp_connect_channel(), during which pch->chan_net set to NULL. Since we need a reference to net per channel, it makes sense to sync the refcnt with the life time of the channel, therefore we should release this reference when we destroy it. Fixes: 1f461dcdd296 ("ppp: take reference on channels netns") Reported-by: Matt Bennett <Matt.Bennett@alliedtelesis.co.nz> Cc: Paul Mackerras <paulus@samba.org> Cc: linux-ppp@vger.kernel.org Cc: Guillaume Nault <g.nault@alphalink.fr> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net> Fixes: Change-Id: Iee0015eca5bd181954bb4896a3720f7549c5ed0b ("UPSTREAM: ppp: take reference on channels netns") Signed-off-by: Amit Pundir <amit.pundir@linaro.org> Change-Id: I24d0bb6f349ab3829f63cfe935ed97b6913a3508		2016-08-18 18:56:03 +05:30
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accessibility
acpi	ACPI / osi: Fix an issue that acpi_osi=!* cannot disable ACPICA internal strings	2016-06-01 12:15:50 -07:00
amba
android	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-03-14 15:32:21 +08:00
ata	libata: LITE-ON CX1-JB256-HP needs lower max_sectors	2016-08-10 11:49:29 +02:00
atm
auxdisplay
base	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-07-29 21:38:37 +01:00
bcma	x86/quirks: Add early quirk to reset Apple AirPort card	2016-08-10 11:49:24 +02:00
block	nbd: ratelimit error msgs after socket close	2016-05-11 11:21:10 +02:00
bluetooth	Bluetooth: vhci: Fix race at creating hci device	2016-06-01 12:15:50 -07:00
bus	bus: imx-weim: Take the 'status' property value into account	2016-05-04 14:48:54 -07:00
cdrom
char	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-08-18 12:33:31 +08:00
clk	clk: rockchip: initialize flags of clk_init_data in mmc-phase clock	2016-08-10 11:49:28 +02:00
clocksource	clockevents/tcb_clksrc: Prevent disabling an already disabled clock	2016-03-03 15:07:15 -08:00
connector	connector: bump skb->users before callback invocation	2016-01-04 21:46:45 -05:00
cpufreq	cpufreq: interactive: drop cpufreq_{get,put}_global_kobject func calls	2016-05-19 12:35:13 +05:30
cpuidle	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-06-14 17:08:03 +08:00
crypto	crypto: qat - make qat_asym_algs.o depend on asn1 headers	2016-07-27 09:47:40 -07:00
dca
devfreq
dio
dma	dmaengine: at_xdmac: double FIFO flush needed to compute residue	2016-08-10 11:49:25 +02:00
dma-buf	CHROMIUM: android: fix warning when releasing active sync point	2016-02-16 13:53:25 -08:00
edac	EDAC, sb_edac: Fix rank lookup on Broadwell	2016-07-27 09:47:27 -07:00
eisa
extcon	extcon: max77843: Use correct size for reading the interrupt register	2016-05-04 14:48:54 -07:00
firewire
firmware	arm64: kaslr: increase randomization granularity	2016-07-29 18:59:49 +02:00
fmc
fpga
gpio	Revert "gpiolib: Split GPIO flags parsing and GPIO configuration"	2016-07-27 09:47:29 -07:00
gpu	drm/i915: Pretend cursor is always on for ILK-style WM calculations (v2)	2016-08-16 09:30:50 +02:00
hid	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-08-18 12:33:31 +08:00
hsi
hv	Drivers: hv: vmbus: Fix a Host signaling bug	2016-03-03 15:07:16 -08:00
hwmon	hwmon: (dell-smm) Cache fan_type() calls and change fan detection	2016-07-27 09:47:37 -07:00
hwspinlock	drivers/hwspinlock: fix race between radix tree insertion and lookup	2016-02-25 12:01:23 -08:00
hwtracing	Merge tag 'v4.4.17' into linux-linaro-lsk-v4.4	2016-08-11 12:15:51 +08:00
i2c	i2c: i801: Allow ACPI SystemIO OpRegion to conflict with PCI BAR	2016-08-16 09:30:48 +02:00
ide
idle	intel_idle: prevent SKL-H boot failure when C8+C9+C10 enabled	2016-04-12 09:09:05 -07:00
iio	iio:ad7266: Fix probe deferral for vref	2016-07-27 09:47:37 -07:00
infiniband	IB/mlx4: Properly initialize GRH TClass and FlowLabel in AHs	2016-07-27 09:47:27 -07:00
input	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-08-11 12:15:55 +08:00
iommu	iommu/amd: Fix unity mapping initialization race	2016-07-27 09:47:32 -07:00
ipack
irqchip	irqchip/gic-v3: Configure all interrupts as non-secure Group-1	2016-06-01 12:15:49 -07:00
isdn	ser_gigaset: remove unnecessary kfree() calls from release method	2015-12-15 13:24:21 -05:00
leds
lguest
lightnvm	lightnvm: wrong offset in bad blk lun calculation	2015-12-29 08:28:32 -07:00
macintosh
mailbox
mcb	mcb: Fixed bar number assignment for the gdd	2016-06-01 12:15:53 -07:00
md	ANDROID: dm verity fec: initialize recursion level	2016-07-11 12:41:28 +05:30
media	media: fix airspy usb probe error path	2016-08-10 11:49:29 +02:00
memory	memory: omap-gpmc: Fix omap gpmc EXTRADELAY timing	2016-07-27 09:47:35 -07:00
memstick
message
mfd	mfd: intel_soc_pmic_core: Terminate panel control GPIO lookup table correctly	2016-06-07 18:14:34 -07:00
misc	Merge branch 'lsk-v4.4-android' of git://android.git.linaro.org/kernel/linaro-android into linux-linaro-lsk-v4.4-android	2016-06-02 17:59:02 +08:00
mmc	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-08-11 12:15:55 +08:00
mtd	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-07-29 21:38:37 +01:00
net	UPSTREAM: ppp: defer netns reference release for ppp channel	2016-08-18 18:56:03 +05:30
nfc
ntb
nubus
nvdimm	libnvdimm, pfn: fix uuid validation	2016-04-20 15:41:54 +09:00
nvme	NVMe: IO ending fixes on surprise removal	2015-12-22 10:12:04 -07:00
nvmem	nvmem: mxs-ocotp: fix buffer overflow in read	2016-05-11 11:21:21 +02:00
of	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-07-29 21:38:37 +01:00
oprofile
parisc	parisc iommu: fix panic due to trying to allocate too large region	2015-12-12 16:07:25 +01:00
parport
pci	PCI: Disable all BAR sizing for devices with non-compliant BARs	2016-06-07 18:14:35 -07:00
pcmcia	pcmcia: db1xxx_ss: fix last irq_to_gpio user	2016-04-20 15:42:09 +09:00
perf
phy	phy: core: fix wrong err handle for phy_power_on	2016-03-03 15:07:28 -08:00
pinctrl	pinctrl: imx: Do not treat a PIN without MUX register as an error	2016-08-10 11:49:27 +02:00
platform	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-08-11 12:15:55 +08:00
pnp	PNP: Add Broadwell to Intel MCH size workaround	2016-08-16 09:30:48 +02:00
power	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-08-11 12:15:55 +08:00
powercap	powercap / RAPL: fix BIOS lock check	2015-12-12 02:31:11 +01:00
pps	pps: do not crash when failed to register	2016-08-10 11:49:25 +02:00
ps3
ptp
pwm	pwm: brcmstb: Fix check of devm_ioremap_resource() return code	2016-05-04 14:48:47 -07:00
rapidio
ras
regulator	regulator: axp20x: Fix axp22x ldo_io voltage ranges	2016-05-18 17:06:51 -07:00
remoteproc
reset
rpmsg
rtc	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-05-12 09:27:18 +08:00
s390	qeth: delete napi struct when removing a qeth device	2016-08-10 11:49:28 +02:00
sbus
scsi	scsi: ignore errors from scsi_dh_add_device()	2016-08-16 09:30:48 +02:00
sfi
sh	drivers: sh: Restore legacy clock domain on SuperH platforms	2016-03-09 15:34:49 -08:00
sn
soc	soc: rockchip: power-domain: fix err handle while probing	2016-05-11 11:21:11 +02:00
spi	spi: sun4i: fix FIFO limit	2016-08-10 11:49:28 +02:00
spmi
ssb
staging	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-08-18 12:33:31 +08:00
target	target: Fix target_release_cmd_kref shutdown comp leak	2016-04-12 09:09:02 -07:00
tc
thermal	thermal: cpu_cooling: fix improper order during initialization	2016-07-27 09:47:29 -07:00
thunderbolt	thunderbolt: Fix double free of drom buffer	2016-06-01 12:15:53 -07:00
tty	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-08-18 12:33:31 +08:00
uio
usb	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-08-11 12:15:55 +08:00
uwb
vfio	vfio: fix ioctl error handling	2016-03-09 15:34:50 -08:00
vhost	vhost: replace % with & on data path	2015-12-07 17:28:10 +02:00
video	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-05-12 09:27:18 +08:00
virt
virtio	virtio_balloon: fix PFN format for virtio-1	2016-07-27 09:47:34 -07:00
vlynq
vme
w1	w1: ds2482: Manage SLPZ pin sleep state	2016-02-16 13:54:18 -08:00
watchdog	watchdog: rc32434_wdt: fix ioctl error handling	2016-04-12 09:08:54 -07:00
xen	xenbus: don't bail early from xenbus_dev_request_and_reply()	2016-08-10 11:49:26 +02:00
zorro
Kconfig	Revert "switch: switch class and GPIO drivers."	2016-05-19 12:32:41 +05:30
Makefile	Revert "switch: switch class and GPIO drivers."	2016-05-19 12:32:41 +05:30