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** Branch linked: lp:~ubuntu-branches/ubuntu/trusty/linux-lts-wily
/trusty-proposed

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https://bugs.launchpad.net/bugs/1536370

Title:
  Wily update to v4.2.8-ckt2 stable release

Status in linux package in Ubuntu:
  New
Status in linux source package in Wily:
  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 v4.2.8-ckt2 upstream stable
         patch set is now available. It should be included in the Ubuntu
         kernel as well.

         git://kernel.ubuntu.com/ubuntu/linux.git

      TEST CASE: TBD

         The following patches from the v4.2.8-ckt2 stable release shall
  be applied:

  Linux 4.2.8-ckt2
  net: possible use after free in dst_release
  sched/core: Reset task's lockless wake-queues on fork()
  net: filter: make JITs zero A for SKF_AD_ALU_XOR_X
  net: sched: fix missing free per cpu on qstats
  ASoC: Use nested lock for snd_soc_dapm_mutex_lock
  kvm: x86: only channel 0 of the i8254 is linked to the HPET
  firmware: dmi_scan: Fix UUID endianness for SMBIOS >= 2.6
  vmstat: allocate vmstat_wq before it is used
  ftrace/module: Call clean up function when module init fails early
  dts: vt8500: Add SDHC node to DTS file for WM8650
  async_tx: use GFP_NOWAIT rather than GFP_IO
  ARM: versatile: fix MMC/SD interrupt assignment
  ARM: OMAP2+: Fix onenand rate detection to avoid filesystem corruption
  tile: provide CONFIG_PAGE_SIZE_64KB etc for tilepro
  tracing: Fix setting of start_index in find_next()
  ftrace/scripts: Fix incorrect use of sprintf in recordmcount
  ALSA: hda - Add keycode map for alc input device
  ALSA: hda - Add mic mute hotkey quirk for Lenovo ThinkCentre AIO
  ASoC: arizona: Fix bclk for sample rates that are multiple of 4kHz
  x86/paravirt: Prevent rtc_cmos platform device init on PV guests
  x86/mce: Ensure offline CPUs don't participate in rendezvous process
  genirq: Prevent chip buslock deadlock
  include/linux/mmdebug.h: should include linux/bug.h
  net: phy: mdio-mux: Check return value of mdiobus_alloc()
  dmaengine: bcm2835-dma: Convert to use DMA pool
  qlcnic: fix a timeout loop
  sh_eth: fix TX buffer byte-swapping
  mISDN: fix a loop count
  pinctrl: bcm2835: Fix initial value for direction_output
  ser_gigaset: fix deallocation of platform device structure
  addrconf: always initialize sysctl table data
  netfilter: nfnetlink_queue: Unregister pernet subsys in case of init failure
  net: fix warnings in 'make htmldocs' by moving macro definition out of field declaration
  serial: 8250_uniphier: fix dl_read and dl_write functions
  sctp: start t5 timer only when peer rwnd is 0 and local state is SHUTDOWN_PENDING
  sctp: convert sack_needed and sack_generation to bits
  phy: sun9i-usb: add USB dependency
  amd-xgbe: fix a couple timeout loops
  xfrm: add rcu protection to sk->sk_policy[]
  ipv6/addrlabel: fix ip6addrlbl_get()
  mm/memory_hotplug.c: check for missing sections in test_pages_in_a_zone()
  ocfs2: fix BUG when calculate new backup super
  [PATCH] arm: fix handling of F_OFD_... in oabi_fcntl64()
  KVM: MTRR: treat memory as writeback if MTRR is disabled in guest CPUID
  KVM: MTRR: observe maxphyaddr from guest CPUID, not host
  KVM: MTRR: fix fixed MTRR segment look up
  MIPS: CPS: drop .set mips64r2 directives
  drm/i915: Only spin whilst waiting on the current request
  drm/i915: Limit the busy wait on requests to 5us not 10ms!
  drm/i915: Break busywaiting for requests on pending signals
  MIPS: uaccess: Fix strlen_user with EVA
  ALSA: hda/realtek - Fix silent headphone output on MacPro 4,1 (v2)
  parisc: Fix syscall restarts
  md: remove check for MD_RECOVERY_NEEDED in action_store.
  i2c: rcar: disable runtime PM correctly in slave mode
  USB: fix invalid memory access in hub_activate()
  USB: ipaq.c: fix a timeout loop
  [media] airspy: increase USB control message buffer size
  [media] Revert "[media] ivtv: avoid going past input/audio array"
  s390/dis: Fix handling of format specifiers
  ALSA: hda - Set SKL+ hda controller power at freeze() and thaw()
  md/raid10: fix data corruption and crash during resync
  drm/nouveau/bios/fan: hardcode the fan mode to linear
  powerpc/powernv: pr_warn_once on unsupported OPAL_MSG type
  ARC: dw2 unwind: Ignore CIE version !=1 gracefully instead of bailing
  ARC: dw2 unwind: Reinstante unwinding out of modules
  mtd: ubi: don't leak e if schedule_erase() fails
  mtd: ubi: fixup error correction in do_sync_erase()
  ftrace/scripts: Have recordmcount copy the object file
  dma-debug: Fix dma_debug_entry offset calculation
  scripts: recordmcount: break hardlinks
  spi: fix parent-device reference leak
  ALSA: hda - Add a fixup for Thinkpad X1 Carbon 2nd
  ALSA: hda - Set codec to D3 at reboot/shutdown on Thinkpads
  ALSA: hda - Apply click noise workaround for Thinkpads generically
  ALSA: hda - Fix headphone mic input on a few Dell ALC293 machines
  ARM: 8471/1: need to save/restore arm register(r11) when it is corrupted
  ARM: dts: imx6: Fix Ethernet PHY mode on Ventana boards
  drm: Don't overwrite UNVERFIED mode status to OK
  ALSA: usb-audio: Add sample rate inquiry quirk for AudioQuest DragonFly
  ALSA: usb-audio: Add a more accurate volume quirk for AudioQuest DragonFly
  tty: Fix GPF in flush_to_ldisc()
  n_tty: Fix poll() after buffer-limited eof push read
  ASoC: wm8974: set cache type for regmap
  i2c: designware: fix IO timeout issue for AMD controller
  i2c: designware: reverts "i2c: designware: Add support for AMD I2C controller"
  ARCv2: intc: Fix random perf irq disabling in SMP setup
  powercap / RAPL: fix BIOS lock check
  ses: fix additional element traversal bug
  ASoC: davinci-mcasp: Fix XDATA check in mcasp_start_tx
  Revert "SCSI: Fix NULL pointer dereference in runtime PM"
  ses: Fix problems with simple enclosures
  rfkill: copy the name into the rfkill struct
  dmaengine: at_xdmac: fix at_xdmac_prep_dma_memcpy()
  KVM: PPC: Book3S HV: Prohibit setting illegal transaction state in MSR
  ASoC: es8328: Fix deemphasis values
  crypto: skcipher - Copy iv from desc even for 0-len walks
  video: fbdev: fsl: Fix kernel crash when diu_ops is not implemented
  dmaengine: at_xdmac: fix macro typo
  net: mvpp2: fix refilling BM pools in RX path
  net: mvpp2: fix buffers' DMA handling on RX path
  net: mvpp2: fix missing DMA region unmap in egress processing
  ARM: 8465/1: mm: keep reserved ASIDs in sync with mm after multiple rollovers
  xen/events/fifo: Consume unprocessed events when a CPU dies
  i2c: mv64xxx: The n clockdiv factor is 0 based on sunxi SoCs
  i2c: rk3x: populate correct variable for sda_falling_time
  usb: musb: USB_TI_CPPI41_DMA requires dmaengine support
  sata/mvebu: use #ifdef around suspend/resume code
  sched/wait: Fix the signal handling fix
  sh64: fix __NR_fgetxattr
  ocfs2: fix SGID not inherited issue
  drivers/base/memory.c: prohibit offlining of memory blocks with missing sections
  mm: hugetlb: call huge_pte_alloc() only if ptep is null
  mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't make any progress
  mm: hugetlb: fix hugepage memory leak caused by wrong reserve count
  parisc iommu: fix panic due to trying to allocate too large region
  USB: add quirk for devices with broken LPM
  xhci: fix usb2 resume timing and races.
  ARM: dts: vf610: use reset values for L2 cache latencies
  vgaarb: fix signal handling in vga_get()
  dm btree: fix bufio buffer leaks in dm_btree_del() error path
  ipmi: move timer init to before irq is setup
  dm space map metadata: fix ref counting bug when bootstrapping a new space map
  dm thin metadata: fix bug when taking a metadata snapshot
  ALSA: hda/ca0132 - quirk for Alienware 17 2015
  ALSA: hda - Fix noise problems on Thinkpad T440s
  radeon: Fix VCE IB test on Big-Endian systems
  radeon: Fix VCE ring test for Big-Endian systems
  radeon/cik: Fix GFX IB test on Big-Endian
  fix the regression from "direct-io: Fix negative return from dio read beyond eof"
  9p: ->evict_inode() should kick out ->i_data, not ->i_mapping
  of/fdt: Add mutex protection for calls to __unflatten_device_tree()
  ALSA: hda - Fixing speaker noise on the two latest thinkpad models
  cxl: Set endianess of kernel contexts
  powerpc/opal-irqchip: Fix deadlock introduced by "Fix double endian conversion"
  powerpc/opal-irqchip: Fix double endian conversion
  IB/srp: Fix possible send queue overflow
  IB/srp: Fix a memory leak
  virtio: fix memory leak of virtio ida cache layers
  vhost: relax log address alignment
  ALSA: hda - Add inverted dmic for Packard Bell DOTS
  ALSA: rme96: Fix unexpected volume reset after rate changes
  block: detach bdev inode from its wb in __blkdev_put()
  jbd2: fix null committed data return in undo_access
  usb: xhci: fix config fail of FS hub behind a HS hub with MTT
  xhci: Fix memory leak in xhci_pme_acpi_rtd3_enable()
  perf: Fix PERF_EVENT_IOC_PERIOD deadlock
  SCSI: Fix NULL pointer dereference in runtime PM
  dm thin metadata: fix bug in dm_thin_remove_range()
  dm btree: fix leak of bufio-backed block in btree_split_sibling error path
  usb: Use the USB_SS_MULT() macro to decode burst multiplier for log message
  USB: whci-hcd: add check for dma mapping error
  usb: core : hub: Fix BOS 'NULL pointer' kernel panic
  irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB
  staging: lustre: echo_copy.._lsm() dereferences userland pointers directly
  usb-storage: Fix scsi-sd failure "Invalid field in cdb" for USB adapter JMicron
  sata_sil: disable trim
  AHCI: Fix softreset failed issue of Port Multiplier
  ext4: fix an endianness bug in ext4_encrypted_follow_link()
  ext4: fix an endianness bug in ext4_encrypted_zeroout()
  drm/ttm: Fixed a read/write lock imbalance
  jbd2: Fix unreclaimed pages after truncate in data=journal mode
  ext4: Fix handling of extended tv_sec
  USB: serial: Another Infineon flash loader USB ID
  USB: cdc_acm: Ignore Infineon Flash Loader utility
  USB: cp210x: Remove CP2110 ID from compatibility list
  iio: adc: spmi-vadc: add missing of_node_put
  iio: fix some warning messages
  usb: gadget: pxa27x: fix suspend callback
  fuse: break infinite loop in fuse_fill_write_pages()
  cuse: fix memory leak
  SUNRPC: Fix callback channel
  gpio: omap: drop omap1 mpuio specific irq_mask/unmask callbacks
  sched/core: Remove false-positive warning from wake_up_process()
  isdn: Partially revert debug format string usage clean up
  ipv4: igmp: Allow removing groups from a removed interface
  ACPI / property: fix compile error for acpi_node_get_property_reference() when CONFIG_ACPI=n
  sched/wait: Fix signal handling in bit wait helpers
  drm: imx: convert to drm_crtc_send_vblank_event()
  sched/rt: Hide the push_irq_work_func() declaration
  remoteproc: avoid stack overflow in debugfs file
  drm/rockchip: unset pgoff when mmap'ing gems
  mac80211: fix off-channel mgmt-tx uninitialized variable usage
  iwlwifi: mvm: don't overwrite the key indices in D3 entry
  net: mvneta: add configuration for MBUS windows access protection
  net: mvneta: fix bit assignment for RX packet irq enable
  net: mvneta: fix bit assignment in MVNETA_RXQ_CONFIG_REG
  Don't reset ->total_link_count on nested calls of vfs_path_lookup()
  x86/signal: Fix restart_syscall number for x32 tasks
  x86/mpx: Fix instruction decoder condition
  drm/amdgpu: partially revert "drm/amdgpu: fix VM_CONTEXT*_PAGE_TABLE_END_ADDR" v2
  ARM/arm64: KVM: correct PTE uncachedness check
  sched/core: Clear the root_domain cpumasks in init_rootdomain()
  drm: Fix an unwanted master inheritance v2
  PM / Domains: Fix bad of_node_put() in failure paths of genpd_dev_pm_attach()
  mac80211: do not actively scan DFS channels
  wan/x25: Fix use-after-free in x25_asy_open_tty()
  Fix a memory leak in scsi_host_dev_release()
  virtio-gpu: use no-merge for fill-modes
  drm/amdgpu: fix userptr flags check
  direct-io: Fix negative return from dio read beyond eof
  block: Always check queue limits for cloned requests
  drm/i915: Don't override output type for DDI HDMI
  ring-buffer: Update read stamp with first real commit on page
  drm/i915: Mark uneven memory banks on gen4 desktop as unknown swizzling
  mac80211: ensure we don't update tx power on a non-running sdata
  advansys: fix big-endian builds
  mac80211: mesh: fix call_rcu() usage
  rtlwifi: rtl8821ae: Fix lockups on boot
  ASoC: wm8962: correct addresses for HPF_C_0/1
  crypto: talitos - Fix timing leak in ESP ICV verification
  crypto: nx - Fix timing leak in GCM and CCM decryption
  Bluetooth: Fix l2cap_chan leak in SMP
  ASoC: rsnd: fixup SCU_SYS_INT_EN1 address
  ARM: dts: Kirkwood: Fix QNAP TS219 power-off
  ARM: 8454/1: OF implies OF_FLATTREE
  thermal: fix thermal_zone_bind_cooling_device prototype
  target: fix COMPARE_AND_WRITE non zero SGL offset data corruption
  target: Fix race for SCF_COMPARE_AND_WRITE_POST checking
  iscsi-target: Fix rx_login_comp hang after login failure
  xen/gntdev: Grant maps should not be subject to NUMA balancing
  nfs4: resend LAYOUTGET when there is a race that changes the seqid
  NFSv4.1/pNFS: Don't request a minimal read layout beyond the end of file
  drm/radeon: make some dpm errors debug only
  ARM: orion5x: Fix legacy get_irqnr_and_base
  ARM: dove: Fix legacy get_irqnr_and_base
  ALSA: hda - Fix noise on Gigabyte Z170X mobo
  PCI: Prevent out of bounds access in numa_node override
  drm/radeon: make rv770_set_sw_state failures non-fatal
  arm64: KVM: Fix AArch32 to AArch64 register mapping
  ARM/arm64: KVM: test properly for a PTE's uncachedness
  ARM: dts: vfxxx: Fix dspi[01] spi-num-chipselects.
  ALSA: hda - Fix headphone noise after Dell XPS 13 resume back from S3
  nfs4: limit callback decoding to received bytes
  vfs: Avoid softlockups with sendfile(2)
  vfs: Make sendfile(2) killable even better
  fix sysvfs symlinks
  dm thin: fix regression in advertised discard limits
  ARC: dw2 unwind: Remove falllback linear search thru FDE entries
  watchdog: omap_wdt: fix null pointer dereference
  ARM: imx: add platform irq type setting in gpc
  blk-mq: fix calling unplug callbacks with preempt disabled
  ALSA: hda - Apply HP headphone fixups more generically
  mac: validate mac_partition is within sector
  dm crypt: fix a possible hang due to race condition on exit
  ALSA: hda - Add fixup for Acer Aspire One Cloudbook 14
  dm thin: restore requested 'error_if_no_space' setting on OODS to WRITE transition
  ALSA: hda - Fix noise on Dell Latitude E6440
  macvlan: fix leak in macvlan_handle_frame
  ipvlan: fix use after free of skb
  ipvlan: fix leak in ipvlan_rcv_frame
  FS-Cache: Add missing initialization of ret in cachefiles_write_page()
  mtd: nand: fix shutdown/reboot for multi-chip systems
  net/mlx4_core: Avoid returning success in case of an error flow
  perf symbols: Fix dso lookup by long name and missing buildids
  stmmac: avoid ipq806x constant overflow warning
  mmc: remove bondage between REQ_META and reliable write
  parisc: Drop unused MADV_xxxK_PAGES flags from asm/mman.h
  kernel/signal.c: unexport sigsuspend()
  fat: fix fake_offset handling on error path
  xhci: Fix a race in usb2 LPM resume, blocking U3 for usb2 devices
  usb: chipidea: debug: disable usb irq while role switch
  arm64: kernel: pause/unpause function graph tracer in cpu_suspend()
  drm/i915: Don't clobber the addfb2 ioctl params
  arm64: mm: use correct mapping granularity under DEBUG_RODATA
  ext2, ext4: warn when mounting with dax enabled
  USB: qcserial: Fix support for HP lt4112 LTE/HSPA+ Gobi 4G Modem
  drm/amdgpu: Fix default page access routing
  drm/radeon: unconditionally set sysfs_initialized
  drm/radeon: Disable uncacheable CPU mappings of GTT with RV6xx
  drm/i915: get runtime PM reference around GEM set_caching IOCTL
  drm/i915: quirk backlight present on Macbook 4, 1
  ipmi: Start the timer and thread on internal msgs
  iio: adc: xilinx: Fix VREFN scale
  iio: si7020: Swap data byte order
  crypto: qat - don't use userspace pointer
  mmc: mmc: Improve reliability of mmc_select_hs400()
  mmc: mmc: Move mmc_switch_status()
  mmc: mmc: Fix HS setting in mmc_select_hs400()
  mmc: mmc: Improve reliability of mmc_select_hs200()
  iio: adc: vf610_adc: Fix division by zero error
  iio:ad7793: Fix ad7785 product ID
  iio: ad5064: Fix ad5629/ad5669 shift
  iio:ad5064: Make sure ad5064_i2c_write() returns 0 on success
  iio: lpc32xx_adc: fix warnings caused by enabling unprepared clock
  vf610_adc: Fix internal temperature calculation
  tools: Add a "make all" rule

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