This bug was fixed in the package linux - 4.9.0-15.16

---------------
linux (4.9.0-15.16) zesty; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1658101

  * Zesty update to v4.9.5 stable release (LP: #1658099)
    - Input: xpad - use correct product id for x360w controllers
    - Input: i8042 - add Pegatron touchpad to noloop table
    - pinctrl: imx: fix imx_pinctrl_desc initialization
    - pinctrl: sh-pfc: r8a7795: Use lookup function for bias data
    - pinctrl: sh-pfc: Add helper to handle bias lookup table
    - regulator: tps65086: Fix 25mV ranges for BUCK regulators
    - regulator: axp20x: Fix axp809 ldo_io registration error on cold boot
    - drm/tegra: dpaux: Fix error handling
    - drm/vc4: Fix a couple error codes in vc4_cl_lookup_bos()
    - drm/savage: dereferencing an error pointer
    - selftests: do not require bash to run netsocktests testcase
    - selftests: do not require bash for the generated test
    - zram: revalidate disk under init_lock
    - zram: support BDI_CAP_STABLE_WRITES
    - dax: fix deadlock with DAX 4k holes
    - mm: pmd dirty emulation in page fault handler
    - mm: fix devm_memremap_pages crash, use mem_hotplug_{begin, done}
    - ocfs2: fix crash caused by stale lvb with fsdlm plugin
    - mm, memcg: fix the active list aging for lowmem requests when memcg is 
enabled
    - mm: support anonymous stable page
    - mm/slab.c: fix SLAB freelist randomization duplicate entries
    - 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: fix NULL deref in vcpu_scan_ioapic
    - KVM: x86: add Align16 instruction flag
    - KVM: x86: add asm_safe wrapper
    - KVM: x86: emulate FXSAVE and FXRSTOR
    - KVM: x86: Introduce segmented_write_std
    - efi/libstub/arm*: Pass latest memory map to the kernel
    - efi/x86: Prune invalid memory map entries and fix boot regression
    - x86/efi: Don't allocate memmap through memblock after mm_init()
    - nl80211: fix sched scan netlink socket owner destruction
    - gpio: Move freeing of GPIO hogs before numbing of the device
    - xfs: Timely free truncated dirty pages
    - bridge: netfilter: Fix dropping packets that moving through bridge 
interface
    - x86/cpu/AMD: Clean up cpu_llc_id assignment per topology feature
    - x86/bugs: Separate AMD E400 erratum and C1E bug
    - x86/CPU/AMD: Fix Bulldozer topology
    - wusbcore: Fix one more crypto-on-the-stack bug
    - usb: musb: fix runtime PM in debugfs
    - USB: serial: kl5kusb105: fix line-state error handling
    - USB: serial: ch341: fix initial modem-control state
    - USB: serial: ch341: fix resume after reset
    - 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
    - fix a fencepost error in pipe_advance()
    - xhci: fix deadlock at host remove by running watchdog correctly
    - btrfs: fix crash when tracepoint arguments are freed by wq callbacks
    - ASoC: hdmi-codec: use unsigned type to structure members with bit-field
    - Revert "tty: serial: 8250: add CON_CONSDEV to flags"
    - vme: Fix wrong pointer utilization in ca91cx42_slave_get
    - pid: fix lockdep deadlock warning due to ucount_lock
    - mnt: Protect the mountpoint hashtable with mount_lock
    - drivers: char: mem: Fix thinkos in kmem address checks
    - dmaengine: omap-dma: Fix dynamic lch_map allocation
    - virtio_blk: avoid DMA to stack for the sense buffer
    - tty/serial: atmel: RS485 half duplex w/DMA: enable RX after TX is done
    - tty/serial: atmel_serial: BUG: stop DMA from transmitting in stop_tx
    - orinoco: Use shash instead of ahash for MIC calculations
    - sysrq: attach sysrq handler correctly for 32-bit kernel
    - extcon: return error code on failure
    - Clearing FIFOs in RS485 emulation mode causes subsequent transmits to 
break
    - sysctl: Drop reference added by grab_header in proc_sys_readdir
    - net/af_iucv: don't use paged skbs for TX on HiperSockets
    - drm/i915/gen9: Fix PCODE polling timeout in stable backport
    - drm: Clean up planes in atomic commit helper failure path
    - drm/radeon: update smc firmware selection for SI
    - drm/radeon: drop verde dpm quirks
    - drm/amdgpu: update si kicker smc firmware
    - drm/amdgpu: drop verde dpm quirks
    - USB: serial: ch341: fix modem-control and B0 handling
    - net/mlx5: Only cancel recovery work when cleaning up device
    - i2c: piix4: Avoid race conditions with IMC
    - x86/cpu: Fix bootup crashes by sanitizing the argument of the 
'clearcpuid=' command-line option
    - nvme: apply DELAY_BEFORE_CHK_RDY quirk at probe time too
    - 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
    - NFS: fix typo in parameter description
    - 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.
    - i2c: mux: pca954x: fix i2c mux selection caching
    - drm/i915/gen9: Fix PCODE polling during SAGV disabling
    - drm: avoid uninitialized timestamp use in wait_vblank
    - drm/panel: simple: Check against num_timings when setting preferred for 
timing
    - drm/i915: Move the min_pixclk[] handling to the end of readout
    - drm: Initialise drm_mm.head_node.allocated
    - remoteproc: qcom_wcnss: Fix circular module dependency
    - remoteproc: st: Fix error return code in st_rproc_probe()
    - powerpc/64: Simplify adaptation to new ISA v3.00 HPTE format
    - cpufreq: powernv: Disable preemption while checking CPU throttling state
    - regulators: helpers: Fix handling of bypass_val_on in get_bypass_regmap
    - ACPI / CPPC: set an error code on probe error path
    - block: Change extern inline to static inline
    - block: cfq_cpd_alloc() should use @gfp
    - ACPI / APEI: Fix NMI notification handling
    - powercap/intel_rapl: fix and tidy up error handling
    - iw_cxgb4: Fix error return code in c4iw_rdev_open()
    - bq24190_charger: Fix PM runtime use for bq24190_battery_set_property
    - power: supply: bq27xxx_battery: Fix register map for BQ27510 and BQ27520
    - blk-mq: Always schedule hctx->next_cpu
    - bus: vexpress-config: fix device reference leak
    - powerpc/mm: Correct process and partition table max size
    - powerpc/ibmebus: Fix further device reference leaks
    - powerpc/ibmebus: Fix device reference leaks in sysfs interface
    - powerpc/powernv: Don't warn on PE init if unfreeze is unsupported
    - arm64: hugetlb: fix the wrong address for several functions
    - arm64: hugetlb: remove the wrong pmd check in find_num_contig()
    - arm64: hugetlb: fix the wrong return value for huge_ptep_set_access_flags
    - pinctrl: sh-pfc: Do not unconditionally support PIN_CONFIG_BIAS_DISABLE
    - Linux 4.9.5

  * KVM module handling different per Architecture - ppc64el (LP: #1657734)
    - [Config] powerpc: Add kvm-hv and kvm-pr to the generic inclusion list

  * ENA network driver moved to -extra (LP: #1657767)
    - [Config] Move Amazon ENA network driver to the main kernel package

  * [Hyper-V] netvsc: add rcu_read locked to netvsc callback (LP: #1657540)
    - netvsc: add rcu_read locking to netvsc callback

  * 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

 -- Tim Gardner <tim.gard...@canonical.com>  Tue, 17 Jan 2017 11:27:33
-0700

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

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https://bugs.launchpad.net/bugs/1655956

Title:
  Zesty update to v4.9.3 stable release

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Zesty:
  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 v4.9.3 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 v4.9.3 stable release shall be
  applied:

  iio: common: st_sensors: fix channel data parsing
  iio: max44000: correct value in illuminance_integration_time_available
  iio: bmi160: Fix time needed to sleep after command execution
  staging: octeon: Call SET_NETDEV_DEV()
  ALSA: hda - Fix up GPIO for ASUS ROG Ranger
  ALSA: hda - Apply asus-mode8 fixup to ASUS X71SL
  ALSA: usb-audio: Fix irq/process data synchronization
  fscrypt: fix renaming and linking special files
  parisc: Add line-break when printing segfault info
  parisc: Mark cr16 clocksource unstable on SMP systems
  HID: sensor-hub: Move the memset to sensor_hub_get_feature()
  ARM: davinci: da850: don't add emac clock to lookup table twice
  pinctrl/amd: Set the level based on ACPI tables
  mac80211: initialize fast-xmit 'info' later
  asm-prototypes: Clear any CPP defines before declaring the functions
  gcc-plugins: update gcc-common.h for gcc-7
  drm/i915: Fix oopses in the overlay code due to i915_gem_active stuff
  drm/i915: Fix oops in overlay due to frontbuffer tracking
  drm/i915: Force VDD off on the new power seqeuencer before starting to use it
  drm/i915: Initialize overlay->last_flip properly
  KVM: x86: reset MMU on KVM_SET_VCPU_EVENTS
  KVM: MIPS: Don't clobber CP0_Status.UX
  KVM: MIPS: Flush KVM entry code from icache globally
  usb: musb: core: add clear_ep_rxintr() to musb_platform_ops
  usb: musb: dsps: implement clear_ep_rxintr() callback
  usb: storage: unusual_uas: Add JMicron JMS56x to unusual device
  usb: gadgetfs: restrict upper bound on device configuration size
  USB: gadgetfs: fix unbounded memory allocation bug
  USB: gadgetfs: fix use-after-free bug
  USB: gadgetfs: fix checks of wTotalLength in config descriptors
  USB: fix problems with duplicate endpoint addresses
  USB: dummy-hcd: fix bug in stop_activity (handle ep0)
  usb: gadget: composite: Test get_alt() presence instead of set_alt()
  usb: dwc3: core: avoid Overflow events
  usb: xhci: fix possible wild pointer
  usb: xhci: apply XHCI_PME_STUCK_QUIRK to Intel Apollo Lake
  xhci: free xhci virtual devices with leaf nodes first
  usb: xhci: fix return value of xhci_setup_device()
  usb: host: xhci: Fix possible wild pointer when handling abort command
  xhci: Handle command completion and timeout race
  usb: xhci: hold lock over xhci_abort_cmd_ring()
  usb: return error code when platform_get_irq fails
  USB: serial: omninet: fix NULL-derefs at open and disconnect
  USB: serial: quatech2: fix sleep-while-atomic in close
  USB: serial: pl2303: fix NULL-deref at open
  USB: serial: keyspan_pda: verify endpoints at probe
  USB: serial: spcp8x5: fix NULL-deref at open
  USB: serial: io_ti: fix NULL-deref at open
  USB: serial: io_ti: fix another NULL-deref at open
  USB: serial: io_ti: fix I/O after disconnect
  USB: serial: iuu_phoenix: fix NULL-deref at open
  USB: serial: garmin_gps: fix memory leak on failed URB submit
  USB: serial: ti_usb_3410_5052: fix NULL-deref at open
  USB: serial: io_edgeport: fix NULL-deref at open
  USB: serial: oti6858: fix NULL-deref at open
  USB: serial: cyberjack: fix NULL-deref at open
  USB: serial: kobil_sct: fix NULL-deref in write
  USB: serial: mos7840: fix NULL-deref at open
  USB: serial: mos7720: fix NULL-deref at open
  USB: serial: mos7720: fix use-after-free on probe errors
  USB: serial: mos7720: fix parport use-after-free on probe errors
  USB: serial: mos7720: fix parallel probe
  usb: xhci-mem: use passed in GFP flags instead of GFP_KERNEL
  xhci: Use delayed_work instead of timer for command timeout
  xhci: Fix race related to abort operation
  usb: dwc3: pci: add Intel Gemini Lake PCI ID
  usb: dwc3: pci: Fix dr_mode misspelling
  usb: dwc3: gadget: Fix full speed mode
  usb: musb: Fix trying to free already-free IRQ 4
  usb: hub: Move hub_port_disable() to fix warning if PM is disabled
  usb: gadget: udc: core: fix return code of usb_gadget_probe_driver()
  usb: musb: blackfin: add bfin_fifo_offset in bfin_ops
  ALSA: usb-audio: Fix bogus error return in snd_usb_create_stream()
  USB: serial: kl5kusb105: abort on open exception path
  usb: gadget: Fix second argument of percpu_ida_alloc()
  usb: gadget: fix request length error for isoc transfer
  ARM: dts: r8a7794: Correct hsusb parent clock
  USB: phy: am335x-control: fix device and of_node leaks
  arm64: dts: hip06: Correct hardware pin number of usb node
  ARM: dts: sun7i: bananapi-m1-plus: Enable USB PHY for USB host support
  dibusb: fix possible memory leak in dibusb_rc_query()
  USB: serial: io_ti: bind to interface after fw download
  mei: fix parameter rename KDoc
  mei: bus: fix mei_cldev_enable KDoc
  mei: move write cb to completion on credentials failures
  staging: iio: ad7606: fix improper setting of oversampling pins
  iio: accel: st_accel: fix LIS3LV02 reading and scaling
  usb: dwc3: ep0: add dwc3_ep0_prepare_one_trb()
  usb: dwc3: ep0: explicitly call dwc3_ep0_prepare_one_trb()
  usb: dwc3: gadget: always unmap EP0 requests
  drm/i915/dp: add lane_count check in intel_dp_check_link_status
  drm/i915: tune down the fast link training vs boot fail
  mac80211: fix tid_agg_rx NULL dereference
  nl80211: Use different attrs for BSSID and random MAC addr in scan req
  ath10k: fix failure to send NULL func frame for 10.4
  mfd: tps65217: Fix page fault on unloading modules
  ath10k: use the right length of "background"
  cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected
  efi/efivar_ssdt_load: Don't return success on allocation failure
  clk: renesas: cpg-mssr: Fix inverted debug check
  debugfs: improve DEFINE_DEBUGFS_ATTRIBUTE for !CONFIG_DEBUG_FS
  x86/prctl/uapi: Remove #ifdef for CHECKPOINT_RESTORE
  x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6
  platform/x86: fujitsu-laptop: use brightness_set_blocking for LED-setting 
callbacks
  hwmon: (scpi) Fix module autoload
  hwmon: (amc6821) sign extension temperature
  hwmon: (ds620) Fix overflows seen when writing temperature limits
  hwmon: (nct7802) Fix overflows seen when writing into limit attributes
  hwmon: (g762) Fix overflows and crash seen when writing limit attributes
  hwmon: (lm90) fix temp1_max_alarm attribute
  Input: synaptics-rmi4 - unlock on error
  clk: qcom: ipq806x: Fix board clk rates
  clk: clk-wm831x: fix a logic error
  clk: ti: dra7: fix "failed to lookup clock node gmac_gmii_ref_clk_div" boot 
message
  clk: sunxi-ng: sun8i-a23: Set CLK_SET_RATE_PARENT for audio module clocks
  clk: sunxi-ng: sun8i-h3: Set CLK_SET_RATE_PARENT for audio module clocks
  clk: imx31: fix rewritten input argument of mx31_clocks_init()
  clk: renesas: mstp: Support 8-bit registers for r7s72100
  iommu/amd: Missing error code in amd_iommu_init_device()
  iommu/amd: Fix the left value check of cmd buffer
  iommu/vt-d: Fix pasid table size encoding
  iommu/vt-d: Flush old iommu caches for kdump when the device gets context 
mapped
  ASoC: lpass-platform: initialize dma channel number
  ASoC: cht_bsw_rt5645: Fix leftover kmalloc
  ASoC: Intel: Skylake: Fix a shift wrapping bug
  ASoC: samsung: i2s: Fixup last IRQ unsafe spin lock call
  scsi: g_NCR5380: Fix release_region in error handling
  scsi: mvsas: fix command_active typo
  target/iscsi: Fix double free in lio_target_tiqn_addtpg()
  sbp-target: Fix second argument of percpu_ida_alloc()
  relay: check array offset before using it
  ima: fix memory leak in ima_release_policy
  PCI/MSI: Check for NULL affinity mask in pci_irq_get_affinity()
  irqchip/bcm7038-l1: Implement irq_cpu_offline() callback
  PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend
  genirq/affinity: Fix node generation from cpumask
  mmc: mmc_test: Uninitialized return value
  rpmsg: qcom_smd: Correct return value for O_NONBLOCK
  mm/hugetlb.c: use the right pte val for compare in hugetlb_cow
  docs-rst: fix LaTeX DURole renewcommand with Sphinx 1.3+
  mm: khugepaged: close use-after-free race during shmem collapsing
  mm: khugepaged: fix radix tree node leak in shmem collapse error path
  mm, compaction: fix NR_ISOLATED_* stats for pfn based migration
  s390/crypto: unlock on error in prng_tdes_read()
  crypto: arm64/sha2-ce - fix for big endian
  crypto: arm64/ghash-ce - fix for big endian
  crypto: arm/aes-ce - fix for big endian
  crypto: arm64/aes-ccm-ce: fix for big endian
  crypto: arm64/aes-neon - fix for big endian
  crypto: arm64/sha1-ce - fix for big endian
  crypto: arm64/aes-xts-ce: fix for big endian
  crypto: arm64/aes-ce - fix for big endian
  md: MD_RECOVERY_NEEDED is set for mddev->recovery
  md: fix refcount problem on mddev when stopping array.
  f2fs: remove percpu_count due to performance regression
  f2fs: hide a maybe-uninitialized warning
  staging: media: davinci_vpfe: unlock on error in vpfe_reqbufs()
  PCI: rockchip: Fix negotiated lanes calculation
  PCI: rockchip: Correct the use of FTS mask
  PCI: Add Mellanox device IDs
  PCI: Convert broken INTx masking quirks from HEADER to FINAL
  PCI: Convert Mellanox broken INTx quirks to be for listed devices only
  PCI: Support INTx masking on ConnectX-4 with firmware x.14.1100+
  PCI: Enable access to non-standard VPD for Chelsio devices (cxgb3)
  powerpc/pci/rpadlpar: Fix device reference leaks
  s390/topology: always use s390 specific sched_domain_topology_level
  s390/pci: fix dma address calculation in map_sg
  drm/radeon: Always store CRTC relative radeon_crtc->cursor_x/y values
  drm/i915: disable PSR by default on HSW/BDW
  drm/i915/gen9: unconditionally apply the memory bandwidth WA
  drm/i915/gen9: fix the WM memory bandwidth WA for Y tiling cases
  tpm_tis: Check return values from get_burstcount.
  xfs: don't call xfs_sb_quota_from_disk twice
  xfs: check return value of _trans_reserve_quota_nblks
  xfs: don't skip cow forks w/ delalloc blocks in cowblocks scan
  xfs: don't BUG() on mixed direct and mapped I/O
  xfs: provide helper for counting extents from if_bytes
  xfs: check minimum block size for CRC filesystems
  xfs: fix unbalanced inode reclaim flush locking
  xfs: new inode extent list lookup helpers
  xfs: factor rmap btree size into the indlen calculations
  xfs: always succeed when deduping zero bytes
  xfs: remove prev argument to xfs_bmapi_reserve_delalloc
  xfs: track preallocation separately in xfs_bmapi_reserve_delalloc()
  xfs: use new extent lookup helpers in __xfs_reflink_reserve_cow
  xfs: clean up cow fork reservation and tag inodes correctly
  xfs: use new extent lookup helpers xfs_file_iomap_begin_delay
  xfs: pass post-eof speculative prealloc blocks to bmapi
  xfs: Move AGI buffer type setting to xfs_read_agi
  xfs: pass state not whichfork to trace_xfs_extlist
  xfs: handle cow fork in xfs_bmap_trace_exlist
  xfs: forbid AG btrees with level == 0
  xfs: check for bogus values in btree block headers
  xfs: complain if we don't get nextents bmap records
  xfs: don't crash if reading a directory results in an unexpected hole
  xfs: error out if trying to add attrs and anextents > 0
  xfs: don't allow di_size with high bit set
  xfs: don't cap maximum dedupe request length
  xfs: ignore leaf attr ichdr.count in verifier during log replay
  xfs: use GPF_NOFS when allocating btree cursors
  xfs: fix double-cleanup when CUI recovery fails
  xfs: use the actual AG length when reserving blocks
  xfs: fix crash and data corruption due to removal of busy COW extents
  xfs: fix max_retries _show and _store functions
  clocksource/dummy_timer: Move hotplug callback after the real timers
  tick/broadcast: Prevent NULL pointer dereference
  Revert "rtlwifi: Fix enter/exit power_save"
  Revert "usb: gadget: composite: always set ep->mult to a sensible value"
  usb: gadget: composite: always set ep->mult to a sensible value
  Linux 4.9.3

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