Xenial update to v4.4.44 stable release

[Tim Gardner]

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 v4.4.44 upstream stable
       patch set is now available. It should be included in the Ubuntu
       kernel as well.

       git://git.kernel.org/

    TEST CASE: TBD

       The following patches from the v4.4.44 stable release shall be applied:

Input: xpad - use correct product id for x360w controllers
Input: i8042 - add Pegatron touchpad to noloop table
selftests: do not require bash to run netsocktests testcase
selftests: do not require bash for the generated test
mm: fix devm_memremap_pages crash, use mem_hotplug_{begin, done}
ocfs2: fix crash caused by stale lvb with fsdlm plugin
mm/hugetlb.c: fix reservation race when freeing surplus pages
KVM: x86: fix emulation of "MOV SS, null selector"
KVM: eventfd: fix NULL deref irqbypass consumer
jump_labels: API for flushing deferred jump label updates
KVM: x86: flush pending lapic jump label updates on module unload
KVM: x86: add Align16 instruction flag
KVM: x86: add asm_safe wrapper
KVM: x86: emulate FXSAVE and FXRSTOR
KVM: x86: Introduce segmented_write_std
nl80211: fix sched scan netlink socket owner destruction
USB: serial: kl5kusb105: fix line-state error handling
USB: serial: ch341: fix initial modem-control state
USB: serial: ch341: fix open error handling
USB: serial: ch341: fix control-message error handling
USB: serial: ch341: fix open and resume after B0
Input: elants_i2c - avoid divide by 0 errors on bad touchscreen data
i2c: print correct device invalid address
i2c: fix kernel memory disclosure in dev interface
xhci: fix deadlock at host remove by running watchdog correctly
vme: Fix wrong pointer utilization in ca91cx42_slave_get
mnt: Protect the mountpoint hashtable with mount_lock
tty/serial: atmel_serial: BUG: stop DMA from transmitting in stop_tx
sysrq: attach sysrq handler correctly for 32-bit kernel
sysctl: Drop reference added by grab_header in proc_sys_readdir
drm/radeon: drop verde dpm quirks
USB: serial: ch341: fix resume after reset
USB: serial: ch341: fix modem-control and B0 handling
x86/cpu: Fix bootup crashes by sanitizing the argument of the 'clearcpuid=' command-line option
btrfs: fix locking when we put back a delayed ref that's too new
btrfs: fix error handling when run_delayed_extent_op fails
pinctrl: meson: fix gpio request disabling other modes
pNFS: Fix race in pnfs_wait_on_layoutreturn
NFS: Fix a performance regression in readdir
NFSv4.1: nfs4_fl_prepare_ds must be careful about reporting success.
cpufreq: powernv: Disable preemption while checking CPU throttling state
block: cfq_cpd_alloc() should use @gfp
ACPI / APEI: Fix NMI notification handling
blk-mq: Always schedule hctx->next_cpu
bus: vexpress-config: fix device reference leak
powerpc/ibmebus: Fix further device reference leaks
powerpc/ibmebus: Fix device reference leaks in sysfs interface
pinctrl: sh-pfc: Do not unconditionally support PIN_CONFIG_BIAS_DISABLE
Linux 4.4.44

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-63.84

---------------
linux (4.4.0-63.84) xenial; urgency=low

  [ Thadeu Lima de Souza Cascardo ]

  * Release Tracking Bug
    - LP: #1660704

  * Backport Dirty COW patch to prevent wineserver freeze (LP: #1658270)
    - SAUCE: mm: Respect FOLL_FORCE/FOLL_COW for thp

  * Kdump through NMI SMP and single core not working on Ubuntu16.10
    (LP: #1630924)
    - x86/hyperv: Handle unknown NMIs on one CPU when unknown_nmi_panic
    - SAUCE: hv: don't reset hv_context.tsc_page on crash

  * [regression 4.8.0-14 -> 4.8.0-17] keyboard and touchscreen lost on Acer
    Chromebook R11 (LP: #1630238)
    - [Config] CONFIG_PINCTRL_CHERRYVIEW=y

  * Call trace when testing fstat stressor on ppc64el with virtual keyboard and
    mouse present (LP: #1652132)
    - SAUCE: HID: usbhid: Quirk a AMI virtual mouse and keyboard with ALWAYS_POLL

  * VLAN SR-IOV regression for IXGBE driver (LP: #1658491)
    - ixgbe: Force VLNCTRL.VFE to be set in all VMDq paths

  * "Out of memory" errors after upgrade to 4.4.0-59 (LP: #1655842)
    - mm, page_alloc: convert alloc_flags to unsigned
    - mm, compaction: change COMPACT_ constants into enum
    - mm, compaction: distinguish COMPACT_DEFERRED from COMPACT_SKIPPED
    - mm, compaction: simplify __alloc_pages_direct_compact feedback interface
    - mm, compaction: distinguish between full and partial COMPACT_COMPLETE
    - mm, compaction: abstract compaction feedback to helpers
    - mm, oom: protect !costly allocations some more
    - mm: consider compaction feedback also for costly allocation
    - mm, oom, compaction: prevent from should_compact_retry looping for ever for
      costly orders
    - mm, oom: protect !costly allocations some more for !CONFIG_COMPACTION
    - mm, oom: prevent premature OOM killer invocation for high order request

  * Backport 3 patches to fix bugs with AIX clients using IBMVSCSI Target Driver
    (LP: #1657194)
    - SAUCE: ibmvscsis: Fix max transfer length
    - SAUCE: ibmvscsis: fix sleeping in interrupt context
    - SAUCE: ibmvscsis: Fix srp_transfer_data fail return code

  * NVMe: adapter is missing after abnormal shutdown followed by quick reboot,
    quirk needed (LP: #1656913)
    - nvme: apply DELAY_BEFORE_CHK_RDY quirk at probe time too

  * Ubuntu 16.10 KVM SRIOV: if enable sriov while ping flood is running ping
    will stop working (LP: #1625318)
    - PCI: Do any VF BAR updates before enabling the BARs
    - PCI: Ignore BAR updates on virtual functions
    - PCI: Update BARs using property bits appropriate for type
    - PCI: Separate VF BAR updates from standard BAR updates
    - PCI: Don't update VF BARs while VF memory space is enabled
    - PCI: Remove pci_resource_bar() and pci_iov_resource_bar()
    - PCI: Decouple IORESOURCE_ROM_ENABLE and PCI_ROM_ADDRESS_ENABLE
    - PCI: Add comments about ROM BAR updating

  * Linux rtc self test fails in a VM under xenial (LP: #1649718)
    - kvm: x86: Convert ioapic->rtc_status.dest_map to a struct
    - kvm: x86: Track irq vectors in ioapic->rtc_status.dest_map
    - kvm: x86: Check dest_map->vector to match eoi signals for rtc

  * Xenial update to v4.4.44 stable releas...