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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1509886

Title:
  Wily update to v4.2.4 stable release

Status in linux package in Ubuntu:
  New
Status in linux source package in Wily:
  Fix Committed

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 Linus' tree or in a minimally
         backported form of that patch. The v4.2.4 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 are in the v4.2.4 stable release:

  arm: KVM: Fix incorrect device to IPA mapping
  KVM: vmx: fix VPID is 0000H in non-root operation
  kvm: don't try to register to KVM_FAST_MMIO_BUS for non mmio eventfd
  kvm: fix zero length mmio searching
  kvm: factor out core eventfd assign/deassign logic
  kvm: fix double free for fast mmio eventfd
  arm: KVM: Disable virtual timer even if the guest is not using it
  kvm: svm: reset mmu on VCPU reset
  KVM: x86: trap AMD MSRs for the TSeg base and mask
  KVM: PPC: Book3S: Take the kvm->srcu lock in kvmppc_h_logical_ci_load/store()
  KVM: PPC: Book3S HV: Pass the correct trap argument to kvmhv_commence_exit
  Revert "KVM: x86: apply guest MTRR virtualization on host reserved pages"
  Revert "KVM: SVM: use NPT page attributes"
  Revert "KVM: SVM: Sync g_pat with guest-written PAT value"
  time: Fix timekeeping_freqadjust()'s incorrect use of abs() instead of abs64()
  target/iscsi: Fix np_ip bracket issue by removing np_ip
  scsi: fix scsi_error_handler vs. scsi_host_dev_release race
  target: Attach EXTENDED_COPY local I/O descriptors to xcopy_pt_sess
  target: Fix PR registration + APTPL RCU conversion regression
  iser-target: remove command with state ISTATE_REMOVE
  iser-target: Put the reference on commands waiting for unsol data
  toshiba_acpi: Fix hotkeys registration on some toshiba models
  perf/x86/intel: Fix constraint access
  locking/qspinlock/x86: Fix performance regression under unaccelerated VMs
  locking/qspinlock/x86: Only emit the test-and-set fallback when building guest support
  perf tools: Fix copying of /proc/kcore
  ARM: 8401/1: perf: Set affinity for PPI based PMUs
  perf hists: Update the column width for the "srcline" sort key
  perf stat: Get correct cpu id for print_aggr
  perf tools: Add missing forward declaration of struct map to probe-event.h
  perf tools: Add empty Build files for architectures lacking them
  perf tools: Fix parse_events_add_pmu caller
  perf header: Fixup reading of HEADER_NRCPUS feature
  perf probe: Use existing routine to look for a kernel module by dso->short_name
  ARCv2: [axs103_smp] Reduce clk for SMP FPGA configs
  watchdog: sunxi: fix activation of system reset
  watchdog: imgpdc: Unregister restart handler on remove
  sched: access local runqueue directly in single_task_running
  hwmon: (nct6775) Swap STEP_UP_TIME and STEP_DOWN_TIME registers for most chips
  ARM: fix Thumb2 signal handling when ARMv6 is enabled
  ARM: 8429/1: disable GCC SRA optimization
  windfarm: decrement client count when unregistering
  ARM: 8425/1: kgdb: Don't try to stop the machine when setting breakpoints
  ARM: dts: omap5-uevm.dts: fix i2c5 pinctrl offsets
  ARM: dts: omap3-beagle: make i2c3, ddc and tfp410 gpio work again
  ARM: pxa: ssp: Fix build error by removing originally incorrect DT binding
  ARM: EXYNOS: reset Little cores when cpu is up
  ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to meet SoC specifications
  ARM: dts: Fix wrong clock binding for sysmmu_fimd1_1 on exynos5420
  ARM: dts: fix usb pin control for imx-rex dts
  dax: fix O_DIRECT I/O to the last block of a blockdev
  blockdev: don't set S_DAX for misaligned partitions
  block: blkg_destroy_all() should clear q->root_blkg and ->root_rl.blkg
  dmaengine: at_xdmac: change block increment addressing mode
  dmaengine: at_xdmac: clean used descriptor
  dmaengine: dw: properly read DWC_PARAMS register
  dmaengine: at_xdmac: fix bug in prep_dma_cyclic
  dmaengine: pxa_dma: fix initial list move
  pmem: add proper fencing to pmem_rw_page()
  x86/apic: Serialize LVTT and TSC_DEADLINE writes
  x86/alternatives: Make optimize_nops() interrupt safe and synced
  x86/platform: Fix Geode LX timekeeping in the generic x86 build
  x86/ioapic: Force affinity setting in setup_ioapic_dest()
  x86/pci/intel_mid_pci: Work around for IRQ0 assignment
  x86/paravirt: Replace the paravirt nop with a bona fide empty function
  x86/nmi/64: Fix a paravirt stack-clobbering bug in the NMI code
  Use WARN_ON_ONCE for missing X86_FEATURE_NRIPS
  x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at runtime, instead of top-down
  x86/kexec: Fix kexec crash in syscall kexec_file_load()
  x86/process: Add proper bound checks in 64bit get_wchan()
  x86/mm: Set NX on gap between __ex_table and rodata
  x86/xen: Support kexec/kdump in HVM guests by doing a soft reset
  leds:lp55xx: Correct Kconfig dependency for f/w user helper
  leds/led-class: Add missing put_device()
  sched/core: Fix TASK_DEAD race in finish_task_switch()
  s390/compat: correct uc_sigmask of the compat signal frame
  s390/boot/decompression: disable floating point in decompressor
  Revert "cgroup: simplify threadgroup locking"
  Revert "sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem"
  memcg: make mem_cgroup_read_stat() unsigned
  spi: Fix documentation of spi_alloc_master()
  spi: xtensa-xtfpga: fix register endianness
  spi: bcm2835: BUG: fix wrong use of PAGE_MASK
  spi: spi-pxa2xx: Check status register to determine if SSSR_TINT is disabled
  spi: spidev: fix possible NULL dereference
  mm: migrate: hugetlb: putback destination hugepage to active list
  lib/iommu-common.c: do not try to deref a null iommu->lazy_flush() pointer when n < pool->hint
  ocfs2/dlm: fix deadlock when dispatch assert master
  mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault
  memcg: fix dirty page migration
  ALSA: hda/tegra - async probe for avoiding module loading deadlock
  ALSA: hda - Disable power_save_node for Thinkpads
  ALSA: synth: Fix conflicting OSS device registration on AWE32
  ALSA: hda: Add dock support for ThinkPad T550
  ALSA: hda - Apply SPDIF pin ctl to MacBookPro 12,1
  ALSA: hda - Disable power_save_node for IDT 92HD73xx chips
  ASoC: pxa: pxa2xx-ac97: fix dma requestor lines
  ASoC: fix broken pxa SoC support
  ASoC: dwc: correct irq clear method
  ASoC: db1200: Fix DAI link format for db1300 and db1550
  ASoC: sgtl5000: fix wrong register MIC_BIAS_VOLTAGE setup on probe
  ASoC: tas2552: fix dBscale-min declaration
  btrfs: skip waiting on ordered range for special files
  Btrfs: fix read corruption of compressed and shared extents
  Btrfs: update fix for read corruption of compressed and shared extents
  tools/lguest: Fix redefinition of struct virtio_pci_cfg_cap
  PCI: Fix devfn for VPD access through function 0
  PCI: Use function 0 VPD for identical functions, regular VPD for others
  PCI: Clear IORESOURCE_UNSET when clipping a bridge window
  dm thin: disable discard support for thin devices if pool's is disabled
  dm crypt: constrain crypt device's max_segment_size to PAGE_SIZE
  ath10k: fix dma_mapping_error() handling
  svcrdma: Fix send_reply() scatter/gather set-up
  staging: ion: fix corruption of ion_import_dma_buf
  USB: option: add ZTE PIDs
  md/raid0: update queue parameter in a safer location.
  md/raid0: apply base queue limits *before* disk_stack_limits
  dm raid: fix round up of default region size
  netfilter: bridge: fix IPv6 packets not being bridged with CONFIG_IPV6=n
  netfilter: nfnetlink: work around wrong endianess in res_id field
  netfilter: nf_tables: Use 32 bit addressing register from nft_type_to_reg()
  netfilter: ipset: Out of bound access in hash:net* types fixed
  netfilter: ipset: Fixing unnamed union init
  netfilter: nf_log: wait for rcu grace after logger unregistration
  netfilter: nft_compat: skip family comparison in case of NFPROTO_UNSPEC
  netfilter: nf_log: don't zap all loggers on unregister
  regulator: core: Correct return value check in regulator_resolve_supply
  regulator: axp20x: Fix enable bit indexes for DCDC4 and DCDC5
  regulator: core: Handle probe deferral from DT when resolving supplies
  Bluetooth: Delay check for conn->smp in smp_conn_security()
  nfs: fix v4.2 SEEK on files over 2 gigs
  NFS: Do cleanup before resetting pageio read/write to mds
  NFSv4: Recovery of recalled read delegations is broken
  nfs: fix pg_test page count calculation
  NFS: Fix a write performance regression
  Fix sec=krb5 on smb3 mounts
  disabling oplocks/leases via module parm enable_oplocks broken for SMB3
  Do not fall back to SMBWriteX in set_file_size error cases
  drm/qxl: only report first monitor as connected if we have no state
  drm/qxl: recreate the primary surface when the bo is not primary
  drm/amdgpu: fix overflow on 32bit systems
  drm/amdgpu: Disable UVD PG
  drm/amdgpu: fix the UVD suspend sequence order
  drm/amdgpu: make UVD handle checking more strict
  drm/amdgpu: Fix max_vblank_count value for current display engines
  drm/amdgpu: Restore LCD backlight level on resume
  drm/i915/bios: handle MIPI Sequence Block v3+ gracefully
  drm: Reject DRI1 hw lock ioctl functions for kms drivers
  drm/radeon: Restore LCD backlight level on resume (>= R5xx)
  drm/dp/mst: fixup handling hotplug on port removal.
  drm/dp/mst: drop cancel work sync in the mstb destroy path (v2)
  xhci: give command abortion one more chance before killing xhci
  xhci: Move xhci_pme_quirk() behind #ifdef CONFIG_PM
  usb: xhci: lock mutex on xhci_stop
  usb: xhci: Clear XHCI_STATE_DYING on start
  usb: xhci: stop everything on the first call to xhci_stop
  usb: xhci: exit early in xhci_setup_device() if we're halted or dying
  xhci: change xhci 1.0 only restrictions to support xhci 1.1
  xhci: init command timeout timer earlier to avoid deleting it uninitialized
  usb: xhci: Add support for URB_ZERO_PACKET to bulk/sg transfers
  batman-adv: Make DAT capability changes atomic
  thermal: cpu_cooling: don't call kcalloc() under rcu_read_lock
  thermal: cpu_cooling: free power table on error or when unregistering
  hv: util: checking the wrong variable
  mmc: dw_mmc: handle data blocks > than 4kB if IDMAC is used
  usb: chipidea: imx: fix a typo for imx6sx
  cifs: use server timestamp for ntlmv2 authentication
  irqchip/atmel-aic5: Use per chip mask caches in mask/unmask()
  irqchip/gic-v3-its: Add missing cache flushes
  docs: update HOWTO for 3.x -> 4.x versioning
  extcon: Fix signedness bugs about break error handling
  extcon: Fix attached value returned by is_extcon_changed
  mtd: pxa3xx_nand: add a default chunk size
  mtd: nand: sunxi: fix sunxi_nand_chips_cleanup()
  mtd: nand: sunxi: fix OOB handling in ->write_xxx() functions
  hpsa: fix an sprintf() overflow in the reset handler
  PM / AVS: rockchip-io: depend on CONFIG_POWER_AVS
  device property: fix potential NULL pointer dereference
  ath10k: fix per-vif queue locking
  ath10k: reject 11b tx fragmentation configuration
  ath10k: fix peer limit enforcement
  ath10k: wake up offchannel queue properly
  ath10k: wake up queue upon vif creation
  pcmcia: sa11x0: fix missing clk_put() in sa11x0 socket drivers
  ipr: Enable SIS pipe commands for SIS-32 devices.
  regmap: debugfs: Ensure we don't underflow when printing access masks
  regmap: debugfs: Don't bother actually printing when calculating max length
  security: fix typo in security_task_prctl
  usb: musb: dsps: fix polling in device-only mode
  usb: chipidea: udc: using the correct stall implementation
  usb: Use the USB_SS_MULT() macro to get the burst multiplier.
  usb: phy: phy-generic: Fix reset behaviour on legacy boot
  usb: musb: cppi41: allow it to work again
  USB: chaoskey read offset bug
  usb: Add device quirk for Logitech PTZ cameras
  USB: Add reset-resume quirk for two Plantronics usb headphones.
  crypto: marvell - properly handle CRYPTO_TFM_REQ_MAY_BACKLOG-flagged requests
  cpu/cacheinfo: Fix teardown path
  cpufreq: dt: Tolerance applies on both sides of target voltage
  MIPS: Fix console output for Fulong2e system
  MIPS: bootmem: Fix mapstart calculation for contiguous maps
  MIPS: BPF: Avoid unreachable code on little endian
  MIPS: BPF: Fix build on pre-R2 little endian CPUs
  MIPS: dma-default: Fix 32-bit fall back to GFP_DMA
  MIPS: CPS: Stop dangling delay slot from has_mt.
  MIPS: CPS: Don't include MT code in non-MT kernels.
  MIPS: CPS: #ifdef on CONFIG_MIPS_MT_SMP rather than CONFIG_MIPS_MT
  batman-adv: Make NC capability changes atomic
  batman-adv: Make TT capability changes atomic
  batman-adv: Make MCAST capability changes atomic
  batman-adv: Fix potential synchronization issues in mcast tvlv handler
  batman-adv: Fix potentially broken skb network header access
  tools lib traceevent: Fix string handling in heterogeneous arch environments
  powerpc/MSI: Fix race condition in tearing down MSI interrupts
  rsi: Fix possible leak when loading firmware
  UBIFS: Kill unneeded locking in ubifs_init_security
  UBI: Validate data_size
  UBI: return ENOSPC if no enough space available
  net: via/Kconfig: GENERIC_PCI_IOMAP required if PCI not selected
  iscsi-target: Avoid OFMarker + IFMarker negotiation
  mmc: core: Don't return an error for CD/WP GPIOs when GPIOLIB is unset
  mmc: core: fix dead loop of mmc_retune
  arm64/efi: Fix boot crash by not padding between EFI_MEMORY_RUNTIME regions
  arm64: ftrace: fix function_graph tracer panic
  arm64: readahead: fault retry breaks mmap file read random detection
  m68k: Define asmlinkage_protect
  xen/blkback: free requests on disconnection
  net/xen-netfront: only napi_synchronize() if running
  igb: do not re-init SR-IOV during probe
  genirq: Fix race in register_irq_proc()
  clocksource: Fix abs() usage w/ 64bit values
  md/bitmap: don't pass -1 to bitmap_storage_alloc.
  nfs/filelayout: Fix NULL reference caused by double freeing of fh_array
  mmc: sdhci-pxav3: remove broken clock base quirk for Armada 38x sdhci driver
  mmc: sdhci-pxav3: disable clock inversion for HS MMC cards
  mmc: sdhci-pxav3: fix error handling of armada_38x_quirks
  cpufreq: acpi_cpufreq: prevent crash on reading freqdomain_cpus
  clk: ti: fix dual-registration of uart4_ick
  clk: ti: clk-7xx: Remove hardwired ABE clock configuration
  clk: samsung: fix cpu clock's flags checking
  namei: results of d_is_negative() should be checked after dentry revalidation
  dm: fix AB-BA deadlock in __dm_destroy()
  dm cache: fix NULL pointer when switching from cleaner policy
  staging: speakup: fix speakup-r regression
  tty: fix stall caused by missing memory barrier in drivers/tty/n_tty.c
  drivers/tty: require read access for controlling terminal
  serial: 8250: add uart_config entry for PORT_RT2880
  serial: atmel: fix error path of probe function
  e1000e: Fix tight loop implementation of systime read algorithm
  mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)
  blk-mq: avoid setting hctx->tags->cpumask before allocation
  sched/preempt: Fix cond_resched_lock() and cond_resched_softirq()
  3w-9xxx: don't unmap bounce buffered commands
  sched/preempt, xen: Use need_resched() instead of should_resched()
  sched/preempt, powerpc, kvm: Use need_resched() instead of should_resched()
  Linux 4.2.4

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