https://source.android.com/security/bulletin/2019-04-01
Merge 4.9.168 into android-4.9-o

Changes in 4.9.168
	arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals
	arm64: debug: Ensure debug handlers check triggering exception level
	ext4: cleanup bh release code in ext4_ind_remove_space()
	lib/int_sqrt: optimize initial value compute
	tty/serial: atmel: Add is_half_duplex helper
	tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped
	mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified
	i2c: core-smbus: prevent stack corruption on read I2C_BLOCK_DATA
	CIFS: fix POSIX lock leak and invalid ptr deref
	h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-
	tracing: kdb: Fix ftdump to not sleep
	gpio: gpio-omap: fix level interrupt idling
	include/linux/relay.h: fix percpu annotation in struct rchan
	sysctl: handle overflow for file-max
	enic: fix build warning without CONFIG_CPUMASK_OFFSTACK
	scsi: hisi_sas: Set PHY linkrate when disconnected
	mm/cma.c: cma_declare_contiguous: correct err handling
	mm/page_ext.c: fix an imbalance with kmemleak
	mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512!
	mm/slab.c: kmemleak no scan alien caches
	ocfs2: fix a panic problem caused by o2cb_ctl
	f2fs: do not use mutex lock in atomic context
	fs/file.c: initialize init_files.resize_wait
	cifs: use correct format characters
	dm thin: add sanity checks to thin-pool and external snapshot creation
	cifs: Fix NULL pointer dereference of devname
	jbd2: fix invalid descriptor block checksum
	fs: fix guard_bio_eod to check for real EOD errors
	tools lib traceevent: Fix buffer overflow in arg_eval
	wil6210: check null pointer in _wil_cfg80211_merge_extra_ies
	crypto: crypto4xx - add missing of_node_put after of_device_is_available
	usb: chipidea: Grab the (legacy) USB PHY by phandle first
	scsi: core: replace GFP_ATOMIC with GFP_KERNEL in scsi_scan.c
	coresight: etm4x: Add support to enable ETMv4.2
	ARM: 8840/1: use a raw_spinlock_t in unwind
	iommu/io-pgtable-arm-v7s: Only kmemleak_ignore L2 tables
	mmc: omap: fix the maximum timeout setting
	e1000e: Fix -Wformat-truncation warnings
	mlxsw: spectrum: Avoid -Wformat-truncation warnings
	IB/mlx4: Increase the timeout for CM cache
	scsi: megaraid_sas: return error when create DMA pool failed
	perf test: Fix failure of 'evsel-tp-sched' test on s390
	SoC: imx-sgtl5000: add missing put_device()
	media: sh_veu: Correct return type for mem2mem buffer helpers
	media: s5p-jpeg: Correct return type for mem2mem buffer helpers
	media: s5p-g2d: Correct return type for mem2mem buffer helpers
	media: mx2_emmaprp: Correct return type for mem2mem buffer helpers
	vfs: fix preadv64v2 and pwritev64v2 compat syscalls with offset == -1
	HID: intel-ish-hid: avoid binding wrong ishtp_cl_device
	leds: lp55xx: fix null deref on firmware load failure
	iwlwifi: pcie: fix emergency path
	ACPI / video: Refactor and fix dmi_is_desktop()
	kprobes: Prohibit probing on bsearch()
	ARM: 8833/1: Ensure that NEON code always compiles with Clang
	ALSA: PCM: check if ops are defined before suspending PCM
	usb: f_fs: Avoid crash due to out-of-scope stack ptr access
	bcache: fix input overflow to cache set sysfs file io_error_halflife
	bcache: fix input overflow to sequential_cutoff
	bcache: improve sysfs_strtoul_clamp()
	genirq: Avoid summation loops for /proc/stat
	iw_cxgb4: fix srqidx leak during connection abort
	fbdev: fbmem: fix memory access if logo is bigger than the screen
	cdrom: Fix race condition in cdrom_sysctl_register
	e1000e: fix cyclic resets at link up with active tx
	ASoC: fsl-asoc-card: fix object reference leaks in fsl_asoc_card_probe
	efi/memattr: Don't bail on zero VA if it equals the region's PA
	ARM: dts: lpc32xx: Remove leading 0x and 0s from bindings notation
	soc: qcom: gsbi: Fix error handling in gsbi_probe()
	mt7601u: bump supported EEPROM version
	ARM: avoid Cortex-A9 livelock on tight dmb loops
	tty: increase the default flip buffer limit to 2*640K
	powerpc/pseries: Perform full re-add of CPU for topology update post-migration
	media: mt9m111: set initial frame size other than 0x0
	hwrng: virtio - Avoid repeated init of completion
	soc/tegra: fuse: Fix illegal free of IO base address
	HID: intel-ish: ipc: handle PIMR before ish_wakeup also clear PISR busy_clear bit
	hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable
	dmaengine: imx-dma: fix warning comparison of distinct pointer types
	dmaengine: qcom_hidma: assign channel cookie correctly
	netfilter: physdev: relax br_netfilter dependency
	media: s5p-jpeg: Check for fmt_ver_flag when doing fmt enumeration
	regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting
	drm/nouveau: Stop using drm_crtc_force_disable
	x86/build: Specify elf_i386 linker emulation explicitly for i386 objects
	selinux: do not override context on context mounts
	wlcore: Fix memory leak in case wl12xx_fetch_firmware failure
	x86/build: Mark per-CPU symbols as absolute explicitly for LLD
	dmaengine: tegra: avoid overflow of byte tracking
	drm/dp/mst: Configure no_stop_bit correctly for remote i2c xfers
	ACPI / video: Extend chassis-type detection with a "Lunch Box" check
	Linux 4.9.168

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>