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[Launchpad Bug Tracker <1572722@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.4.0-22.39

---------------
linux (4.4.0-22.39) xenial; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
    - LP: #1578721

  * LP: #1578705
    - bpf: fix double-fdput in replace_map_fd_with_map_ptr()

 -- Kamal Mostafa <kamal@xxxxxxxxxxxxx>  Thu, 05 May 2016 09:30:58 -0700

** Changed in: linux (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1572722

Title:
  Xenial update to v4.4.7 stable release

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released

Bug description:
  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 v4.4.7 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 v4.4.7 stable release shall be
  applied:

  regulator: core: avoid unused variable warning
  regulator: core: Fix nested locking of supplies
  ASoC: samsung: pass DMA channels as pointers
  mmc: sh_mmcif: rework dma channel handling
  mmc: sh_mmcif: Correct TX DMA channel allocation
  x86/microcode/intel: Make early loader look for builtin microcode too
  x86/microcode: Untangle from BLK_DEV_INITRD
  x86/entry/compat: Keep TS_COMPAT set during signal delivery
  perf/x86/intel: Add definition for PT PMI bit
  x86/PCI: Mark Broadwell-EP Home Agent & PCU as having non-compliant BARs
  KVM: i8254: change PIT discard tick policy
  KVM: fix spin_lock_init order on x86
  KVM: VMX: avoid guest hang on invalid invept instruction
  KVM: VMX: avoid guest hang on invalid invvpid instruction
  KVM: VMX: fix nested vpid for old KVM guests
  perf/core: Fix perf_sched_count derailment
  perf tools: Dont stop PMU parsing on alias parse error
  perf tools: Fix checking asprintf return value
  perf tools: Fix python extension build
  sched/cputime: Fix steal_account_process_tick() to always return jiffies
  sched/preempt, sh: kmap_coherent relies on disabled preemption
  EDAC, amd64_edac: Shift wrapping issue in f1x_get_norm_dct_addr()
  s390: fix floating pointer register corruption (again)
  s390/cpumf: add missing lpp magic initialization
  pinctrl-bcm2835: Fix cut-and-paste error in "pull" parsing
  PCI: Disable IO/MEM decoding for devices with non-compliant BARs
  PCI: ACPI: IA64: fix IO port generic range check
  x86/irq: Cure live lock in fixup_irqs()
  x86/apic: Fix suspicious RCU usage in smp_trace_call_function_interrupt()
  x86/iopl/64: Properly context-switch IOPL on Xen PV
  x86/iopl: Fix iopl capability check on Xen PV
  x86/mm: TLB_REMOTE_SEND_IPI should count pages
  sg: fix dxferp in from_to case
  aacraid: Fix RRQ overload
  aacraid: Fix memory leak in aac_fib_map_free
  aacraid: Set correct msix count for EEH recovery
  sd: Fix discard granularity when LBPRZ=1
  scsi: storvsc: fix SRB_STATUS_ABORTED handling
  be2iscsi: set the boot_kset pointer to NULL in case of failure
  aic7xxx: Fix queue depth handling
  libnvdimm: Fix security issue with DSM IOCTL.
  dm snapshot: disallow the COW and origin devices from being identical
  dm: fix excessive dm-mq context switching
  dm thin metadata: don't issue prefetches if a transaction abort has failed
  dm cache: make sure every metadata function checks fail_io
  dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request()
  usb: retry reset if a device times out
  usb: hub: fix a typo in hub_port_init() leading to wrong logic
  USB: uas: Reduce can_queue to MAX_CMNDS
  USB: cdc-acm: more sanity checking
  USB: iowarrior: fix oops with malicious USB descriptors
  USB: usb_driver_claim_interface: add sanity checking
  USB: mct_u232: add sanity checking in probe
  USB: digi_acceleport: do sanity checking for the number of ports
  USB: cypress_m8: add endpoint sanity check
  USB: serial: cp210x: Adding GE Healthcare Device ID
  USB: serial: ftdi_sio: Add support for ICP DAS I-756xU devices
  USB: option: add "D-Link DWM-221 B1" device id
  pwc: Add USB id for Philips Spc880nc webcam
  Input: powermate - fix oops with malicious USB descriptors
  ALSA: usb-audio: Fix NULL dereference in create_fixed_stream_quirk()
  ALSA: usb-audio: Add sanity checks for endpoint accesses
  ALSA: usb-audio: add Microsoft HD-5001 to quirks
  ALSA: usb-audio: Minor code cleanup in create_fixed_stream_quirk()
  ALSA: usb-audio: Fix double-free in error paths after snd_usb_add_audio_stream() call
  Bluetooth: btusb: Add new AR3012 ID 13d3:3395
  Bluetooth: btusb: Add a new AR3012 ID 04ca:3014
  Bluetooth: btusb: Add a new AR3012 ID 13d3:3472
  crypto: ccp - Add hash state import and export support
  crypto: ccp - Limit the amount of information exported
  crypto: ccp - Don't assume export/import areas are aligned
  crypto: ccp - memset request context to zero during import
  crypto: keywrap - memzero the correct memory
  crypto: atmel - fix checks of error code returned by devm_ioremap_resource()
  crypto: ux500 - fix checks of error code returned by devm_ioremap_resource()
  crypto: marvell/cesa - forward devm_ioremap_resource() error code
  X.509: Fix leap year handling again
  mei: bus: check if the device is enabled before data transfer
  HID: logitech: fix Dual Action gamepad support
  HID: i2c-hid: fix OOB write in i2c_hid_set_or_send_report()
  HID: multitouch: force retrieving of Win8 signature blob
  HID: fix hid_ignore_special_drivers module parameter
  staging: comedi: ni_tiocmd: change mistaken use of start_src for start_arg
  staging: android: ion_test: fix check of platform_device_register_simple() error code
  staging: comedi: ni_mio_common: fix the ni_write[blw]() functions
  tty: Fix GPF in flush_to_ldisc(), part 2
  net: irda: Fix use-after-free in irtty_open()
  8250: use callbacks to access UART_DLL/UART_DLM
  saa7134: Fix bytesperline not being set correctly for planar formats
  adv7511: TX_EDID_PRESENT is still 1 after a disconnect
  bttv: Width must be a multiple of 16 when capturing planar formats
  coda: fix first encoded frame payload
  media: v4l2-compat-ioctl32: fix missing length copy in put_v4l2_buffer32
  mtip32xx: Avoid issuing standby immediate cmd during FTL rebuild
  mtip32xx: Fix broken service thread handling
  mtip32xx: Remove unwanted code from taskfile error handler
  mtip32xx: Print exact time when an internal command is interrupted
  mtip32xx: Fix for rmmod crash when drive is in FTL rebuild
  mtip32xx: Handle safe removal during IO
  mtip32xx: Handle FTL rebuild failure state during device initialization
  mtip32xx: Implement timeout handler
  mtip32xx: Cleanup queued requests after surprise removal
  ALSA: pcm: Avoid "BUG:" string for warnings again
  ALSA: intel8x0: Add clock quirk entry for AD1981B on IBM ThinkPad X41.
  ALSA: hda - Don't handle ELD notify from invalid port
  ALSA: hda - fix the mic mute button and led problem for a Lenovo AIO
  ALSA: hda - Fix unconditional GPIO toggle via automute
  tools/hv: Use include/uapi with __EXPORTED_HEADERS__
  jbd2: fix FS corruption possibility in jbd2_journal_destroy() on umount path
  brd: Fix discard request processing
  IB/srpt: Simplify srpt_handle_tsk_mgmt()
  bcache: cleaned up error handling around register_cache()
  bcache: fix race of writeback thread starting before complete initialization
  bcache: fix cache_set_flush() NULL pointer dereference on OOM
  mm: memcontrol: reclaim when shrinking memory.high below usage
  mm: memcontrol: reclaim and OOM kill when shrinking memory.max below usage
  ia64: define ioremap_uc()
  watchdog: don't run proc_watchdog_update if new value is same as old
  watchdog: rc32434_wdt: fix ioctl error handling
  Bluetooth: Add new AR3012 ID 0489:e095
  Bluetooth: Fix potential buffer overflow with Add Advertising
  cgroup: ignore css_sets associated with dead cgroups during migration
  net: mvneta: enable change MAC address when interface is up
  of: alloc anywhere from memblock if range not specified
  vfs: show_vfsstat: do not ignore errors from show_devname method
  splice: handle zero nr_pages in splice_to_pipe()
  xtensa: ISS: don't hang if stdin EOF is reached
  xtensa: fix preemption in {clear,copy}_user_highpage
  xtensa: clear all DBREAKC registers on start
  ARC: [BE] readl()/writel() to work in Big Endian CPU configuration
  ARC: bitops: Remove non relevant comments
  quota: Fix possible GPF due to uninitialised pointers
  xfs: fix two memory leaks in xfs_attr_list.c error paths
  raid1: include bio_end_io_list in nr_queued to prevent freeze_array hang
  md/raid5: Compare apples to apples (or sectors to sectors)
  RAID5: check_reshape() shouldn't call mddev_suspend
  RAID5: revert e9e4c377e2f563 to fix a livelock
  raid10: include bio_end_io_list in nr_queued to prevent freeze_array hang
  md/raid5: preserve STRIPE_PREREAD_ACTIVE in break_stripe_batch_list
  md: multipath: don't hardcopy bio in .make_request path
  Revert "UBUNTU: SAUCE: (noup) fuse: Add reference counting for fuse_io_priv"
  Revert "UBUNTU: SAUCE: (noup) fuse: do not use iocb after it may have been freed"
  fuse: do not use iocb after it may have been freed
  fuse: Add reference counting for fuse_io_priv
  fs/coredump: prevent fsuid=0 dumps into user-controlled directories
  rapidio/rionet: fix deadlock on SMP
  ipr: Fix out-of-bounds null overwrite
  ipr: Fix regression when loading firmware
  iwlwifi: mvm: Fix paging memory leak
  drm/radeon: disable runtime pm on PX laptops without dGPU power control
  drm/radeon: Don't drop DP 2.7 Ghz link setup on some cards.
  drm/amdgpu: disable runtime pm on PX laptops without dGPU power control
  drm/amdgpu: include the right version of gmc header files for iceland
  IB/ipoib: fix for rare multicast join race condition
  tracing: Have preempt(irqs)off trace preempt disabled functions
  tracing: Fix crash from reading trace_pipe with sendfile
  tracing: Fix trace_printk() to print when not using bprintk()
  bitops: Do not default to __clear_bit() for __clear_bit_unlock()
  scripts/coccinelle: modernize &
  scripts/kconfig: allow building with make 3.80 again
  kbuild/mkspec: fix grub2 installkernel issue
  MAINTAINERS: Update mailing list and web page for hwmon subsystem
  ideapad-laptop: Add ideapad Y700 (15) to the no_hw_rfkill DMI list
  mmc: block: fix ABI regression of mmc_blk_ioctl
  mmc: mmc_spi: Add Card Detect comments and fix CD GPIO case
  mmc: sdhci: fix data timeout (part 1)
  mmc: sdhci: fix data timeout (part 2)
  mmc: sdhci: Fix override of timeout clk wrt max_busy_timeout
  clk: rockchip: rk3368: fix cpuclk mux bit of big cpu-cluster
  clk: rockchip: rk3368: fix cpuclk core dividers
  clk: rockchip: rk3368: fix parents of video encoder/decoder
  clk: rockchip: rk3368: fix hdmi_cec gate-register
  clk: rockchip: add hclk_cpubus to the list of rk3188 critical clocks
  clk: bcm2835: Fix setting of PLL divider clock rates
  target: Fix target_release_cmd_kref shutdown comp leak
  iser-target: Fix identification of login rx descriptor type
  iser-target: Add new state ISER_CONN_BOUND to isert_conn
  iser-target: Separate flows for np listeners and connections cma events
  iser-target: Rework connection termination
  nfsd4: fix bad bounds checking
  nfsd: fix deadlock secinfo+readdir compound
  ARM: dts: at91: sama5d3 Xplained: don't disable hsmci regulator
  ARM: dts: at91: sama5d4 Xplained: don't disable hsmci regulator
  ACPI / PM: Runtime resume devices when waking from hibernate
  writeback, cgroup: fix premature wb_put() in locked_inode_to_wb_and_lock_list()
  writeback, cgroup: fix use of the wrong bdi_writeback which mismatches the inode
  Revert "UBUNTU: SAUCE: (noup) Input: synaptics - handle spurious release of trackstick buttons, again"
  Input: synaptics - handle spurious release of trackstick buttons, again
  Input: ims-pcu - sanity check against missing interfaces
  Input: ati_remote2 - fix crashes on detecting device with invalid descriptor
  ocfs2/dlm: fix race between convert and recovery
  ocfs2/dlm: fix BUG in dlm_move_lockres_to_recovery_list
  mm/page_alloc: prevent merging between isolated and other pageblocks
  mtd: onenand: fix deadlock in onenand_block_markbad
  PM / sleep: Clear pm_suspend_global_flags upon hibernate
  scsi_common: do not clobber fixed sense information
  sched/cputime: Fix steal time accounting vs. CPU hotplug
  perf/x86/pebs: Add workaround for broken OVFL status on HSW+
  perf/x86/intel: Fix PEBS warning by only restoring active PMU in pmi
  perf/x86/intel: Fix PEBS data source interpretation on Nehalem/Westmere
  Linux 4.4.7

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