Vasily Gorbik ea298e6ee8 s390/cio: avoid calling strlen on null pointer ... Fix the following kasan finding: BUG: KASAN: global-out-of-bounds in ccwgroup_create_dev+0x850/0x1140 Read of size 1 at addr 0000000000000000 by task systemd-udevd.r/561 CPU: 30 PID: 561 Comm: systemd-udevd.r Tainted: G B Hardware name: IBM 3906 M04 704 (LPAR) Call Trace: ([<0000000231b3db7e>] show_stack+0x14e/0x1a8) [<0000000233826410>] dump_stack+0x1d0/0x218 [<000000023216fac4>] print_address_description+0x64/0x380 [<000000023216f5a8>] __kasan_report+0x138/0x168 [<00000002331b8378>] ccwgroup_create_dev+0x850/0x1140 [<00000002332b618a>] group_store+0x3a/0x50 [<00000002323ac706>] kernfs_fop_write+0x246/0x3b8 [<00000002321d409a>] vfs_write+0x132/0x450 [<00000002321d47da>] ksys_write+0x122/0x208 [<0000000233877102>] system_call+0x2a6/0x2c8 Triggered by: openat(AT_FDCWD, "/sys/bus/ccwgroup/drivers/qeth/group", O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0666) = 16 write(16, "0.0.bd00,0.0.bd01,0.0.bd02", 26) = 26 The problem is that __get_next_id in ccwgroup_create_dev might set "buf" buffer pointer to NULL and explicit check for that is required. Cc: stable@vger.kernel.org Reviewed-by: Sebastian Ott <sebott@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>		2019-09-23 23:27:52 +02:00
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accessibility	…
acpi	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-16 18:47:53 -07:00
amba	…
android	…
ata	…
atm	…
auxdisplay	…
base	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-16 16:28:19 -07:00
bcma	…
block	…
bluetooth	Bluetooth: bpa10x: change return value	2019-09-04 16:11:46 +02:00
bus	ARM: SoC driver updates for v5.4	2019-09-16 15:52:38 -07:00
cdrom	…
char	ia64 for v5.4 - big change here is removal of support for SGI Altix	2019-09-16 15:32:01 -07:00
clk	ARM: DT updates for v5.4	2019-09-16 15:56:22 -07:00
clocksource	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-17 12:35:15 -07:00
connector	…
counter	…
cpufreq	…
cpuidle	…
crypto	s390 updates for the 5.4 merge window	2019-09-17 14:04:43 -07:00
dax	…
dca	…
devfreq	…
dio	…
dma	ARM: SoC platform updates for v5.4	2019-09-16 15:48:14 -07:00
dma-buf	…
edac	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-16 18:47:53 -07:00
eisa	…
extcon	…
firewire	…
firmware	Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-16 16:47:38 -07:00
fpga	…
fsi	…
gnss	…
gpio	ARM: SoC driver updates for v5.4	2019-09-16 15:52:38 -07:00
gpu	Merge branch 'x86-vmware-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-16 19:40:24 -07:00
hid	…
hsi	…
hv	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-17 12:35:15 -07:00
hwmon	ARM: SoC driver updates for v5.4	2019-09-16 15:52:38 -07:00
hwspinlock	…
hwtracing	…
i2c	ARM: SoC platform updates for v5.4	2019-09-16 15:48:14 -07:00
i3c	…
ide	…
idle	…
iio	hwmon: Remove ads1015 driver	2019-09-03 12:47:17 -07:00
infiniband	…
input	…
interconnect	…
iommu	ia64 for v5.4 - big change here is removal of support for SGI Altix	2019-09-16 15:32:01 -07:00
ipack	…
irqchip	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-17 11:42:15 -07:00
isdn	isdn/capi: check message length in capi_write()	2019-09-07 17:44:25 +02:00
leds	…
lightnvm	…
macintosh	…
mailbox	…
mcb	…
md	…
media	…
memory	iommu/mediatek: Clean up struct mtk_smi_iommu	2019-08-30 15:57:27 +02:00
memstick	…
message	…
mfd	…
misc	ia64 for v5.4 - big change here is removal of support for SGI Altix	2019-09-16 15:32:01 -07:00
mmc	mmc: tmio: Fixup runtime PM management during remove	2019-09-13 13:49:09 +02:00
mtd	…
mux	…
net	ARM: SoC driver updates for v5.4	2019-09-16 15:52:38 -07:00
nfc	NFC: st95hf: fix spelling mistake "receieve" -> "receive"	2019-09-11 15:07:07 +01:00
ntb	…
nubus	…
nvdimm	…
nvme	…
nvmem	…
of	arm64 updates for 5.4:	2019-09-16 14:31:40 -07:00
opp	…
oprofile	…
parisc	parisc: Disable HP HSC-PCI Cards to prevent kernel crash	2019-09-08 15:43:04 +02:00
parport	…
pci	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-17 11:42:15 -07:00
pcmcia	…
perf	Merge branches 'for-next/52-bit-kva', 'for-next/cpu-topology', 'for-next/error-injection', 'for-next/perf', 'for-next/psci-cpuidle', 'for-next/rng', 'for-next/smpboot', 'for-next/tbi' and 'for-next/tlbi' into for-next/core	2019-08-30 12:46:12 +01:00
phy	…
pinctrl	This is the bulk of changes in the GPIO subsystem for the	2019-09-16 14:06:50 -07:00
platform	platform-drivers-x86 for v5.4-1	2019-09-16 19:59:10 -07:00
pnp	…
power	…
powercap	…
pps	…
ps3	…
ptp	…
pwm	…
rapidio	…
ras	…
regulator	regulator: core: Fix error return for /sys access	2019-09-11 11:17:23 +01:00
remoteproc	…
reset	…
rpmsg	…
rtc	…
s390	s390/cio: avoid calling strlen on null pointer	2019-09-23 23:27:52 +02:00
sbus	…
scsi	ia64 for v5.4 - big change here is removal of support for SGI Altix	2019-09-16 15:32:01 -07:00
sfi	…
sh	…
siox	…
slimbus	…
soc	ARM: SoC driver updates for v5.4	2019-09-16 15:52:38 -07:00
soundwire	…
spi	ARM: SoC driver updates for v5.4	2019-09-16 15:52:38 -07:00
spmi	…
ssb	…
staging	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-17 12:35:15 -07:00
target	…
tc	…
tee	…
thermal	…
thunderbolt	…
tty	ARM: SoC platform updates for v5.4	2019-09-16 15:48:14 -07:00
uio	…
usb	ARM: SoC platform updates for v5.4	2019-09-16 15:48:14 -07:00
uwb	…
vfio	…
vhost	Revert "vhost: block speculation of translated descriptors"	2019-09-14 15:21:51 -04:00
video	ARM: SoC driver updates for v5.4	2019-09-16 15:52:38 -07:00
virt	…
virtio	virtio_ring: fix unmap of indirect descriptors	2019-09-09 10:43:15 -04:00
visorbus	…
vlynq	…
vme	…
w1	…
watchdog	ARM: SoC platform updates for v5.4	2019-09-16 15:48:14 -07:00
xen	swiotlb: Split size parameter to map/unmap APIs	2019-09-11 12:34:29 +02:00
zorro	…
Kconfig	…
Makefile	…