Xenial update: v4.4.225 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:

       v4.4.225 upstream stable release
       from git://git.kernel.org/

igb: use igb_adapter->io_addr instead of e1000_hw->hw_addr
padata: Remove unused but set variables
padata: get_next is never NULL
padata: ensure the reorder timer callback runs on the correct CPU
padata: ensure padata_do_serial() runs on the correct CPU
evm: Check also if *tfm is an error pointer in init_desc()
fix multiplication overflow in copy_fdtable()
HID: multitouch: add eGalaxTouch P80H84 support
ceph: fix double unlock in handle_cap_export()
USB: core: Fix misleading driver bug report
platform/x86: asus-nb-wmi: Do not load on Asus T100TA and T200TA
ARM: futex: Address build warning
media: Fix media_open() to clear filp->private_data in error leg
drivers/media/media-devnode: clear private_data before put_device()
media-devnode: add missing mutex lock in error handler
media-devnode: fix namespace mess
media-device: dynamically allocate struct media_devnode
media: fix use-after-free in cdev_put() when app exits after driver unbind
media: fix media devnode ioctl/syscall and unregister race
i2c: dev: switch from register_chrdev to cdev API
i2c: dev: don't start function name with 'return'
i2c: dev: use after free in detach
i2c-dev: don't get i2c adapter via i2c_dev
i2c: dev: Fix the race between the release of i2c_dev and cdev
padata: set cpu_index of unused CPUs to -1
sched/fair, cpumask: Export for_each_cpu_wrap()
padata: Replace delayed timer with immediate workqueue in padata_reorder
padata: initialize pd->cpu with effective cpumask
padata: purge get_cpu and reorder_via_wq from padata_do_serial
ALSA: pcm: fix incorrect hw_base increase
platform/x86: alienware-wmi: fix kfree on potentially uninitialized pointer
libnvdimm/btt: Remove unnecessary code in btt_freelist_init
l2tp: lock socket before checking flags in connect()
l2tp: fix racy socket lookup in l2tp_ip and l2tp_ip6 bind()
l2tp: hold session while sending creation notifications
l2tp: take a reference on sessions used in genetlink handlers
l2tp: don't use l2tp_tunnel_find() in l2tp_ip and l2tp_ip6
net: l2tp: export debug flags to UAPI
net: l2tp: deprecate PPPOL2TP_MSG_* in favour of L2TP_MSG_*
net: l2tp: ppp: change PPPOL2TP_MSG_* => L2TP_MSG_*
New kernel function to get IP overhead on a socket.
L2TP:Adjust intf MTU, add underlay L3, L2 hdrs.
l2tp: remove useless duplicate session detection in l2tp_netlink
l2tp: remove l2tp_session_find()
l2tp: define parameters of l2tp_session_get*() as "const"
l2tp: define parameters of l2tp_tunnel_find*() as "const"
l2tp: initialise session's refcount before making it reachable
l2tp: hold tunnel while looking up sessions in l2tp_netlink
l2tp: hold tunnel while processing genl delete command
l2tp: hold tunnel while handling genl tunnel updates
l2tp: hold tunnel while handling genl TUNNEL_GET commands
l2tp: hold tunnel used while creating sessions with netlink
l2tp: prevent creation of sessions on terminated tunnels
l2tp: fix l2tp_eth module loading
l2tp: don't register sessions in l2tp_session_create()
l2tp: initialise l2tp_eth sessions before registering them
l2tp: protect sock pointer of struct pppol2tp_session with RCU
l2tp: initialise PPP sessions before registering them
Revert "gfs2: Don't demote a glock until its revokes are written"
staging: iio: ad2s1210: Fix SPI reading
mei: release me_cl object reference
iio: sca3000: Remove an erroneous 'get_device()'
l2tp: device MTU setup, tunnel socket needs a lock
cpumask: Make for_each_cpu_wrap() available on UP as well
Linux 4.4.225
UBUNTU: upstream stable to v4.4.225

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-186.216

---------------
linux (4.4.0-186.216) xenial; urgency=medium

  * xenial/linux: 4.4.0-186.216 -proposed tracker (LP: #1885514)

  * Xenial update: v4.4.228 upstream stable release (LP: #1884564)
    - ipv6: fix IPV6_ADDRFORM operation logic
    - vxlan: Avoid infinite loop when suppressing NS messages with invalid options
    - scsi: return correct blkprep status code in case scsi_init_io() fails.
    - net: phy: marvell: Limit 88m1101 autoneg errata to 88E1145 as well.
    - pwm: fsl-ftm: Use flat regmap cache
    - ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
    - sched/fair: Don't NUMA balance for kthreads
    - ath9k_htc: Silence undersized packet warnings
    - x86_64: Fix jiffies ODR violation
    - x86/speculation: Prevent rogue cross-process SSBD shutdown
    - x86/reboot/quirks: Add MacBook6,1 reboot quirk
    - efi/efivars: Add missing kobject_put() in sysfs entry creation error path
    - ALSA: es1688: Add the missed snd_card_free()
    - ALSA: usb-audio: Fix inconsistent card PM state after resume
    - ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
    - ACPI: PM: Avoid using power resources if there are none for D0
    - cgroup, blkcg: Prepare some symbols for module and !CONFIG_CGROUP usages
    - nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
    - spi: bcm2835aux: Fix controller unregister order
    - ALSA: pcm: disallow linking stream to itself
    - x86/speculation: Change misspelled STIPB to STIBP
    - x86/speculation: Add support for STIBP always-on preferred mode
    - x86/speculation: Avoid force-disabling IBPB based on STIBP and enhanced
      IBRS.
    - x86/speculation: PR_SPEC_FORCE_DISABLE enforcement for indirect branches.
    - spi: dw: fix possible race condition
    - spi: dw: Fix controller unregister order
    - spi: No need to assign dummy value in spi_unregister_controller()
    - spi: Fix controller unregister order
    - spi: pxa2xx: Fix controller unregister order
    - spi: bcm2835: Fix controller unregister order
    - ovl: initialize error in ovl_copy_xattr
    - proc: Use new_inode not new_inode_pseudo
    - video: fbdev: w100fb: Fix a potential double free.
    - KVM: nSVM: leave ASID aside in copy_vmcb_control_area
    - KVM: nVMX: Consult only the "basic" exit reason when routing nested exit
    - KVM: arm64: Make vcpu_cp1x() work on Big Endian hosts
    - ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx
    - ath9k: Fix use-after-free Write in ath9k_htc_rx_msg
    - ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb
    - ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb
    - Smack: slab-out-of-bounds in vsscanf
    - mm/slub: fix a memory leak in sysfs_slab_add()
    - fat: don't allow to mount if the FAT length == 0
    - can: kvaser_usb: kvaser_usb_leaf: Fix some info-leaks to USB devices
    - spi: dw: Zero DMA Tx and Rx configurations on stack
    - Bluetooth: Add SCO fallback for invalid LMP parameters error
    - kgdb: Prevent infinite recursive entries to the debugger
    - spi: dw: Enable interrupts in accordance with DMA xfer mode
    - clocksource...