Xenial update: v4.4.242 upstream stable release

[Kamal Mostafa]

SRU Justification

    Impact:
       The upstream process for stable tree updates is quite similar
       in scope to the Ubuntu SRU process, e.g., each patch has to
       demonstrably fix a bug, and each patch is vetted by upstream
       by originating either directly from a mainline/stable Linux tree or
       a minimally backported form of that patch. The following upstream
       stable patches should be included in the Ubuntu kernel:

       v4.4.242 upstream stable release
       from git://git.kernel.org/

SUNRPC: ECONNREFUSED should cause a rebind.
scripts/setlocalversion: make git describe output more reliable
ravb: Fix bit fields checking in ravb_hwtstamp_get()
tipc: fix memory leak caused by tipc_buf_append()
mtd: lpddr: Fix bad logic in print_drs_error
ata: sata_rcar: Fix DMA boundary mask
fscrypt: return -EXDEV for incompatible rename or link into encrypted dir
f2fs crypto: avoid unneeded memory allocation in ->readdir
powerpc/powernv/smp: Fix spurious DBG() warning
sparc64: remove mm_cpumask clearing to fix kthread_use_mm race
f2fs: fix to check segment boundary during SIT page readahead
um: change sigio_spinlock to a mutex
xfs: fix realtime bitmap/summary file truncation when growing rt volume
video: fbdev: pvr2fb: initialize variables
ath10k: fix VHT NSS calculation when STBC is enabled
mmc: via-sdmmc: Fix data race bug
printk: reduce LOG_BUF_SHIFT range for H8300
kgdb: Make "kgdbcon" work properly with "kgdb_earlycon"
USB: adutux: fix debugging
drivers/net/wan/hdlc_fr: Correctly handle special skb->protocol values
power: supply: test_power: add missing newlines when printing parameters by sysfs
md/bitmap: md_bitmap_get_counter returns wrong blocks
clk: ti: clockdomain: fix static checker warning
net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid
drivers: watchdog: rdc321x_wdt: Fix race condition bugs
ext4: Detect already used quota file early
gfs2: add validation checks for size of superblock
memory: emif: Remove bogus debugfs error handling
ARM: dts: s5pv210: move PMU node out of clock controller
ARM: dts: s5pv210: remove dedicated 'audio-subsystem' node
md/raid5: fix oops during stripe resizing
leds: bcm6328, bcm6358: use devres LED registering function
NFS: fix nfs_path in case of a rename retry
ACPI / extlog: Check for RDMSR failure
ACPI: video: use ACPI backlight for HP 635 Notebook
acpi-cpufreq: Honor _PSD table setting on new AMD CPUs
w1: mxc_w1: Fix timeout resolution problem leading to bus error
scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove()
btrfs: reschedule if necessary when logging directory items
vt: keyboard, simplify vt_kdgkbsent
vt: keyboard, extend func_buf_lock to readers
dmaengine: dma-jz4780: Fix race in jz4780_dma_tx_status
iio:gyro:itg3200: Fix timestamp alignment and prevent data leak.
powerpc/powernv/elog: Fix race while processing OPAL error log event.
ubifs: dent: Fix some potential memory leaks while iterating entries
ubi: check kthread_should_stop() after the setting of task state
ia64: fix build error with !COREDUMP
ceph: promote to unsigned long long before shifting
libceph: clear con->out_msg on Policy::stateful_server faults
9P: Cast to loff_t before multiplying
ring-buffer: Return 0 on success from ring_buffer_resize()
vringh: fix __vringh_iov() when riov and wiov are different
tty: make FONTX ioctl use the tty pointer they were actually passed
arm64: berlin: Select DW_APB_TIMER_OF
cachefiles: Handle readpage error correctly
hil/parisc: Disable HIL driver when it gets stuck
ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
ARM: s3c24xx: fix missing system reset
device property: Keep secondary firmware node secondary by type
device property: Don't clear secondary pointer for shared primary firmware node
staging: comedi: cb_pcidas: Allow 2-channel commands for AO subdevice
Revert "Revert "XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.""
xen/events: don't use chip_data for legacy IRQs
tipc: fix use-after-free in tipc_bcast_get_mode
gianfar: Replace skb_realloc_headroom with skb_cow_head for PTP
gianfar: Account for Tx PTP timestamp in the skb headroom
Fonts: Replace discarded const qualifier
ALSA: usb-audio: Add implicit feedback quirk for Qu-16
ftrace: Fix recursion check for NMI test
ftrace: Handle tracing when switching between context
ARM: dts: sun4i-a10: fix cpu_alert temperature
x86/kexec: Use up-to-dated screen_info copy to fill boot params
of: Fix reserved-memory overlap detection
scsi: core: Don't start concurrent async scan on same host
vsock: use ns_capable_noaudit() on socket create
vt: Disable KD_FONT_OP_COPY
fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent
serial: 8250_mtk: Fix uart_get_baud_rate warning
serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init
USB: serial: cyberjack: fix write-URB completion race
USB: serial: option: add LE910Cx compositions 0x1203, 0x1230, 0x1231
USB: serial: option: add Telit FN980 composition 0x1055
USB: Add NO_LPM quirk for Kingston flash drive
ARC: stack unwinding: avoid indefinite looping
Revert "ARC: entry: fix potential EFA clobber when TIF_SYSCALL_TRACE"
Linux 4.4.242
UBUNTU: upstream stable to v4.4.242

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-198.230

---------------
linux (4.4.0-198.230) xenial; urgency=medium

  * xenial/linux: 4.4.0-198.230 -proposed tracker (LP: #1906052)

  * Xenial update: v4.4.244 upstream stable release (LP: #1904914)
    - ring-buffer: Fix recursion protection transitions between interrupt context
    - gfs2: Wake up when sd_glock_disposal becomes zero
    - mm: mempolicy: fix potential pte_unmap_unlock pte error
    - time: Prevent undefined behaviour in timespec64_to_ns()
    - btrfs: reschedule when cloning lots of extents
    - net: xfrm: fix a race condition during allocing spi
    - perf tools: Add missing swap for ino_generation
    - ALSA: hda: prevent undefined shift in snd_hdac_ext_bus_get_link()
    - can: dev: can_get_echo_skb(): prevent call to kfree_skb() in hard IRQ
      context
    - can: dev: __can_get_echo_skb(): fix real payload length return value for RTR
      frames
    - can: can_create_echo_skb(): fix echo skb generation: always use skb_clone()
    - can: peak_usb: add range checking in decode operations
    - can: peak_usb: peak_usb_get_ts_time(): fix timestamp wrapping
    - Btrfs: fix missing error return if writeback for extent buffer never started
    - i40e: Wrong truncation from u16 to u8
    - i40e: Fix of memory leak and integer truncation in i40e_virtchnl.c
    - ath9k_htc: Use appropriate rs_datalen type
    - usb: gadget: goku_udc: fix potential crashes in probe
    - gfs2: Free rd_bits later in gfs2_clear_rgrpd to fix use-after-free
    - gfs2: check for live vs. read-only file system in gfs2_fitrim
    - drm/amdgpu: perform srbm soft reset always on SDMA resume
    - mac80211: fix use of skb payload instead of header
    - cfg80211: regulatory: Fix inconsistent format argument
    - iommu/amd: Increase interrupt remapping table limit to 512 entries
    - xfs: fix a missing unlock on error in xfs_fs_map_blocks
    - of/address: Fix of_node memory leak in of_dma_is_coherent
    - cosa: Add missing kfree in error path of cosa_write
    - perf: Fix get_recursion_context()
    - ext4: correctly report "not supported" for {usr,grp}jquota when
      !CONFIG_QUOTA
    - ext4: unlock xattr_sem properly in ext4_inline_data_truncate()
    - usb: cdc-acm: Add DISABLE_ECHO for Renesas USB Download mode
    - mei: protect mei_cl_mtu from null dereference
    - ocfs2: initialize ip_next_orphan
    - don't dump the threads that had been already exiting when zapped.
    - drm/gma500: Fix out-of-bounds access to struct drm_device.vblank[]
    - pinctrl: amd: use higher precision for 512 RtcClk
    - pinctrl: amd: fix incorrect way to disable debounce filter
    - swiotlb: fix "x86: Don't panic if can not alloc buffer for swiotlb"
    - IPv6: Set SIT tunnel hard_header_len to zero
    - net/af_iucv: fix null pointer dereference on shutdown
    - net/x25: Fix null-ptr-deref in x25_connect
    - net: Update window_clamp if SOCK_RCVBUF is set
    - random32: make prandom_u32() output unpredictable
    - x86/speculation: Allow IBPB to be conditionally enabled on CPUs with always-
      on STIBP
    - xen/events: avoid removing an event channel while handling it
    - xen/events: add a proper ...