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[Launchpad Bug Tracker <1441291@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux-lts-utopic -
3.16.0-36.48~14.04.1

---------------
linux-lts-utopic (3.16.0-36.48~14.04.1) trusty; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1444249
  * Merged back Ubuntu-3.16.0-34.47 security release

linux (3.16.0-35.46) utopic; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1442324

  [ Andy Whitcroft ]

  * [Config] CONFIG_DEFAULT_MMAP_MIN_ADDR needs to match on armhf and arm64
    - LP: #1418140

  [ Chris J Arges ]

  * [Config] CONFIG_PCIEASPM_DEBUG=y
    - LP: #1398544

  [ dann frazier ]

  * [Config] CONFIG_RTC_DRV_EFI=y on arm64
    - LP: #1441291

  [ Upstream Kernel Changes ]

  * Revert "USB: serial: make bulk_out_size a lower limit"
    - LP: #1441317
  * Revert "i2c: core: Dispose OF IRQ mapping at client removal time"
    - LP: #1441317
  * Revert "net: cx82310_eth: use common match macro"
    - LP: #1441317
  * KEYS: request_key() should reget expired keys rather than give
    EKEYEXPIRED
    - LP: #1124250
  * drm/i915/bdw: 3D_CHICKEN3 has write mask bits
    - LP: #1374389
  * drm/i915: call lpt_init_clock_gating on BDW too
    - LP: #1374389
  * drm/i915/bdw: Apply workarounds in render ring init function
    - LP: #1374389
  * drm/i915/bdw: Cleanup pre prod workarounds
    - LP: #1374389
  * drm/i915: Refactor Broadwell PIPE_CONTROL emission into a helper.
    - LP: #1374389
  * drm/i915: Add the WaCsStallBeforeStateCacheInvalidate:bdw workaround.
    - LP: #1374389
  * drm/i915/bdw: Remove BDW preproduction W/As until C stepping.
    - LP: #1374389
  * drm/i915: Rework GPU reset sequence to match driver load & thaw
    - LP: #1384469
  * drm/ast: switch to using CACHED by default for sysram
    - LP: #1420627
  * drm/ast: Add missing entry to dclk_table[]
    - LP: #1420627
  * drm/ast: Add reduced blanking modes for wide screen mode
    - LP: #1420627
  * drm/ast: Try to use MMIO registers when PIO isn't supported
    - LP: #1420627
  * drm/ast: POST chip at probe time if VGA not enabled
    - LP: #1420627
  * drm/ast: Properly initialize P2A base before using it in
    ast_init_3rdtx()
    - LP: #1420627
  * drm/ast: Don't assume DVO enabled means SIL164 on uninitialized chips
    - LP: #1420627
  * drm/ast: Cleanup analog init code path
    - LP: #1420627
  * audit: correctly record file names with different path name types
    - LP: #1439441
  * of: Create of_console_check() for selecting a console specified in
    /chosen
    - LP: #1438585
  * of: Enable console on serial ports specified by /chosen/stdout-path
    - LP: #1438585
  * of: correct of_console_check()'s return value
    - LP: #1438585
  * of: Add bindings for chosen node, stdout-path
    - LP: #1438585
  * of: add optional options parameter to of_find_node_by_path()
    - LP: #1438585
  * of: support passing console options with stdout-path
    - LP: #1438585
  * netfilter: nf_tables: disable preemption when restoring chain counters
    - LP: #1441317
  * netfilter: nf_tables: fix leaks in error path of nf_tables_newchain()
    - LP: #1441317
  * ipvs: rerouting to local clients is not needed anymore
    - LP: #1441317
  * netfilter: nft_compat: fix module refcount underflow
    - LP: #1441317
  * netfilter: xt_socket: fix a stack corruption bug
    - LP: #1441317
  * ipvs: add missing ip_vs_pe_put in sync code
    - LP: #1441317
  * flowcache: Fix kernel panic in flow_cache_flush_task
    - LP: #1441317
  * pktgen: fix UDP checksum computation
    - LP: #1441317
  * rtnetlink: ifla_vf_policy: fix misuses of NLA_BINARY
    - LP: #1441317
  * tcp: make sure skb is not shared before using skb_get()
    - LP: #1441317
  * ipv6: fix ipv6_cow_metrics for non DST_HOST case
    - LP: #1441317
  * rtnetlink: call ->dellink on failure when ->newlink exists
    - LP: #1441317
  * gen_stats.c: Duplicate xstats buffer for later use
    - LP: #1441317
  * ipv4: ip_check_defrag should correctly check return value of
    skb_copy_bits
    - LP: #1441317
  * ipv4: ip_check_defrag should not assume that skb_network_offset is zero
    - LP: #1441317
  * net: phy: Fix verification of EEE support in phy_init_eee
    - LP: #1441317
  * ematch: Fix auto-loading of ematch modules.
    - LP: #1441317
  * openvswitch: Fix net exit.
    - LP: #1441317
  * net: reject creation of netdev names with colons
    - LP: #1441317
  * team: fix possible null pointer dereference in team_handle_frame
    - LP: #1441317
  * net: compat: Ignore MSG_CMSG_COMPAT in compat_sys_{send, recv}msg
    - LP: #1441317
  * macvtap: make sure neighbour code can push ethernet header
    - LP: #1441317
  * usb: plusb: Add support for National Instruments host-to-host cable
    - LP: #1441317
  * udp: only allow UFO for packets from SOCK_DGRAM sockets
    - LP: #1441317
  * net: ping: Return EAFNOSUPPORT when appropriate.
    - LP: #1441317
  * team: don't traverse port list using rcu in team_set_mac_address
    - LP: #1441317
  * ALSA: hda - Add pin configs for ASUS mobo with IDT 92HD73XX codec
    - LP: #1441317
  * xfs: Fix quota type in quota structures when reusing quota file
    - LP: #1441317
  * drm/i915: Dell Chromebook 11 has PWM backlight
    - LP: #1441317
  * gpiolib: of: allow of_gpiochip_find_and_xlate to find more than one
    chip per node
    - LP: #1441317
  * gpio: tps65912: fix wrong container_of arguments
    - LP: #1441317
  * ALSA: pcm: Don't leave PREPARED state after draining
    - LP: #1441317
  * metag: Fix KSTK_EIP() and KSTK_ESP() macros
    - LP: #1441317
  * ALSA: hda: controller code - do not export static functions
    - LP: #1441317
  * drm/i915: Check obj->vma_list under the struct_mutex
    - LP: #1441317
  * md/raid1: fix read balance when a drive is write-mostly.
    - LP: #1441317
  * ALSA: hda - Disable runtime PM for Panther Point again
    - LP: #1441317
  * drm/radeon: use drm_mode_vrefresh() rather than mode->vrefresh
    - LP: #1441317
  * drm/radeon: fix 1 RB harvest config setup for TN/RL
    - LP: #1441317
  * arm64: compat Fix siginfo_t -> compat_siginfo_t conversion on big
    endian
    - LP: #1441317
  * nilfs2: fix potential memory overrun on inode
    - LP: #1441317
  * iio: mxs-lradc: separate touchscreen and buffer virtual channels
    - LP: #1441317
  * iio: mxs-lradc: make ADC reads not disable touchscreen interrupts
    - LP: #1441317
  * iio: mxs-lradc: make ADC reads not unschedule touchscreen conversions
    - LP: #1441317
  * iio: mxs-lradc: only update the buffer when its conversions have
    finished
    - LP: #1441317
  * iio: imu: adis16400: Fix sign extension
    - LP: #1441317
  * iio: mxs-lradc: fix iio channel map regression
    - LP: #1441317
  * iio:adc:mcp3422 Fix incorrect scales table
    - LP: #1441317
  * iio: ad5686: fix optional reference voltage declaration
    - LP: #1441317
  * usb: dwc3: dwc3-omap: Fix disable IRQ
    - LP: #1441317
  * usb: gadget: configfs: don't NUL-terminate (sub)compatible ids
    - LP: #1441317
  * KVM: emulate: fix CMPXCHG8B on 32-bit hosts
    - LP: #1441317
  * usb: XHCI: platform: Move the Marvell quirks after the enabling the
    clocks
    - LP: #1441317
  * xhci: Allocate correct amount of scratchpad buffers
    - LP: #1441317
  * USB: usbfs: don't leak kernel data in siginfo
    - LP: #1441317
  * uas: Add US_FL_NO_REPORT_OPCODES for JMicron JMS539
    - LP: #1441317
  * efi/libstub: Fix boundary checking in efi_high_alloc()
    - LP: #1441317
  * USB: ftdi_sio: add PIDs for Actisense USB devices
    - LP: #1441317
  * USB: serial: fix potential use-after-free after failed probe
    - LP: #1441317
  * USB: serial: fix tty-device error handling at probe
    - LP: #1441317
  * USB: mxuport: fix null deref when used as a console
    - LP: #1441317
  * mac80211: Send EAPOL frames at lowest rate
    - LP: #1441317
  * ARC: Fix KSTK_ESP()
    - LP: #1441317
  * USB: serial: cp210x: Adding Seletek device id's
    - LP: #1441317
  * staging: comedi: adv_pci1710: fix AI INSN_READ for non-zero channel
    - LP: #1441317
  * mei: make device disabled on stop unconditionally
    - LP: #1441317
  * NFSv4: Don't call put_rpccred() under the rcu_read_lock()
    - LP: #1441317
  * btrfs: fix lost return value due to variable shadowing
    - LP: #1441317
  * KVM: MIPS: Fix trace event to save PC directly
    - LP: #1441317
  * usb: ftdi_sio: Add jtag quirk support for Cyber Cortex AV boards
    - LP: #1441317
  * ecryptfs: ->f_op is never NULL
    - LP: #1441317
  * eCryptfs: don't pass fs-specific ioctl commands through
    - LP: #1441317
  * drm/radeon: do a posting read in r100_set_irq
    - LP: #1441317
  * drm/radeon: do a posting read in rs600_set_irq
    - LP: #1441317
  * drm/radeon: do a posting read in r600_set_irq
    - LP: #1441317
  * drm/radeon: do a posting read in evergreen_set_irq
    - LP: #1441317
  * drm/radeon: do a posting read in si_set_irq
    - LP: #1441317
  * drm/radeon: do a posting read in cik_set_irq
    - LP: #1441317
  * drm/radeon: fix DRM_IOCTL_RADEON_CS oops
    - LP: #1441317
  * drm/radeon: fix interlaced modes on DCE8
    - LP: #1441317
  * ACPI / video: Load the module even if ACPI is disabled
    - LP: #1441317
  * ASoC: omap-pcm: Correct dma mask
    - LP: #1441317
  * x86/asm/entry/64: Remove a bogus 'ret_from_fork' optimization
    - LP: #1441317
  * Btrfs: fix data loss in the fast fsync path
    - LP: #1441317
  * Btrfs:__add_inode_ref: out of bounds memory read when looking for
    extended ref.
    - LP: #1441317
  * xhci: fix reporting of 0-sized URBs in control endpoint
    - LP: #1441317
  * xhci: Workaround for PME stuck issues in Intel xhci
    - LP: #1441317
  * Change email address for 8250_pci
    - LP: #1441317
  * tty: fix up atime/mtime mess, take four
    - LP: #1441317
  * console: Fix console name size mismatch
    - LP: #1441317
  * net: irda: fix wait_until_sent poll timeout
    - LP: #1441317
  * USB: serial: fix infinite wait_until_sent timeout
    - LP: #1441317
  * TTY: fix tty_wait_until_sent on 64-bit machines
    - LP: #1441317
  * sunrpc: fix braino in ->poll()
    - LP: #1441317
  * svcrpc: fix memory leak in gssp_accept_sec_context_upcall
    - LP: #1441317
  * SUNRPC: Always manipulate rpc_rqst::rq_bc_pa_list under
    xprt->bc_pa_lock
    - LP: #1441317
  * ath5k: fix spontaneus AR5312 freezes
    - LP: #1441317
  * net: cls_bpf: fix size mismatch on filter preparation
    - LP: #1441317
  * net: cls_bpf: fix auto generation of per list handles
    - LP: #1441317
  * qlge: Fix qlge_update_hw_vlan_features to handle if interface is down
    - LP: #1441317
  * ip6_gre: fix endianness errors in ip6gre_err
    - LP: #1441317
  * PCI: Don't read past the end of sysfs "driver_override" buffer
    - LP: #1441317
  * spi: dw: revisit FIFO size detection again
    - LP: #1441317
  * spi: atmel: Fix interrupt setup for PDC transfers
    - LP: #1441317
  * mtd: nand: pxa3xx: Fix PIO FIFO draining
    - LP: #1441317
  * cpuset: Fix cpuset sched_relax_domain_level
    - LP: #1441317
  * workqueue: fix hang involving racing cancel[_delayed]_work_sync()'s for
    PREEMPT_NONE
    - LP: #1441317
  * bnx2x: Force fundamental reset for EEH recovery
    - LP: #1441317
  * xen/events: avoid NULL pointer dereference in dom0 on large machines
    - LP: #1441317
  * spi: pl022: Fix race in giveback() leading to driver lock-up
    - LP: #1441317
  * tpm/ibmvtpm: Additional LE support for tpm_ibmvtpm_send
    - LP: #1441317
  * libsas: Fix Kernel Crash in smp_execute_task
    - LP: #1441317
  * irqchip: armada-370-xp: Fix chained per-cpu interrupts
    - LP: #1441317
  * ALSA: hda - Fix regression of HD-audio controller fallback modes
    - LP: #1441317
  * can: add missing initialisations in CAN related skbuffs
    - LP: #1441317
  * can: kvaser_usb: Avoid double free on URB submission failures
    - LP: #1441317
  * can: kvaser_usb: Read all messages in a bulk-in URB buffer
    - LP: #1441317
  * ftrace: Fix en(dis)able graph caller when en(dis)abling record via
    sysctl
    - LP: #1441317
  * ftrace: Fix ftrace enable ordering of sysctl ftrace_enabled
    - LP: #1441317
  * ARM: imx6qdl-sabresd: set swbst_reg as vbus's parent reg
    - LP: #1441317
  * ARM: imx6sl-evk: set swbst_reg as vbus's parent reg
    - LP: #1441317
  * drm/radeon: drop setting UPLL to sleep mode
    - LP: #1441317
  * xen-pciback: limit guest control of command register
    - LP: #1441317
  * ALSA: hda - Fix built-in mic on Compaq Presario CQ60
    - LP: #1441317
  * drm/vmwgfx: Fix a couple of lock dependency violations
    - LP: #1441317
  * drm/vmwgfx: Reorder device takedown somewhat
    - LP: #1441317
  * ALSA: control: Add sanity checks for user ctl id name string
    - LP: #1441317
  * ALSA: snd-usb: add quirks for Roland UA-22
    - LP: #1441317
  * ALSA: hda - Set single_adc_amp flag for CS420x codecs
    - LP: #1441317
  * ALSA: hda - Add workaround for MacBook Air 5,2 built-in mic
    - LP: #1441317
  * nilfs2: fix deadlock of segment constructor during recovery
    - LP: #1441317
  * ALSA: hda - Don't access stereo amps for mono channel widgets
    - LP: #1441317
  * ARM: at91: pm: fix at91rm9200 standby
    - LP: #1441317
  * ARM: dts: DRA7x: Fix the bypass clock source for dpll_iva and others
    - LP: #1441317
  * ARM: dts: am33xx-clocks: Fix ehrpwm tbclk data on am33xx
    - LP: #1441317
  * ARM: dts: am43xx-clocks: Fix ehrpwm tbclk data on am43xx
    - LP: #1441317
  * clk: divider: fix calculation of maximal parent rate for a given
    divider
    - LP: #1441317
  * clk: divider: fix selection of divider when rounding to closest
    - LP: #1441317
  * USB: serial: add Google simple serial SubClass support
    - LP: #1441317
  * HID: add support for MS Surface Pro 3 Type Cover
    - LP: #1441317
  * HID: apple: fix battery support for the 2009 ANSI wireless keyboard
    - LP: #1441317
  * HID: microsoft: add support for Japanese Surface Type Cover 3
    - LP: #1441317
  * HID: pidff: Fix initialisation forMicrosoft Sidewinder FF Pro 2
    - LP: #1441317
  * usb: gadget: function: phonet: balance usb_ep_disable calls
    - LP: #1441317
  * usb: musb: core: add pm_runtime_irq_safe()
    - LP: #1441317
  * cdc-acm: Add support for Denso cradle CU-321
    - LP: #1441317
  * HID: microsoft: Add ID for NE7K wireless keyboard
    - LP: #1441317
  * sparc32: destroy_context() and switch_mm() needs to disable interrupts.
    - LP: #1441317
  * sparc: semtimedop() unreachable due to comparison error
    - LP: #1441317
  * sparc: perf: Remove redundant perf_pmu_{en|dis}able calls
    - LP: #1441317
  * sparc: perf: Make counting mode actually work
    - LP: #1441317
  * sparc: Touch NMI watchdog when walking cpus and calling printk
    - LP: #1441317
  * sparc64: Fix several bugs in memmove().
    - LP: #1441317
  * net: sysctl_net_core: check SNDBUF and RCVBUF for min length
    - LP: #1441317
  * rds: avoid potential stack overflow
    - LP: #1441317
  * inet_diag: fix possible overflow in inet_diag_dump_one_icsk()
    - LP: #1441317
  * caif: fix MSG_OOB test in caif_seqpkt_recvmsg()
    - LP: #1441317
  * rxrpc: bogus MSG_PEEK test in rxrpc_recvmsg()
    - LP: #1441317
  * ipv6: fix backtracking for throw routes
    - LP: #1441317
  * tcp: fix tcp fin memory accounting
    - LP: #1441317
  * net: compat: Update get_compat_msghdr() to match
    copy_msghdr_from_user() behaviour
    - LP: #1441317
  * tcp: make connect() mem charging friendly
    - LP: #1441317
  * Linux 3.16.7-ckt9
    - LP: #1441317
  * rtc: ia64: allow other architectures to use EFI RTC
    - LP: #1441291
  * rtc: Disable EFI rtc for x86
    - LP: #1441291
  * ipv6: Don't reduce hop limit for an interface
    - LP: #1441103
    - CVE-2015-2922
  * x86/microcode/intel: Guard against stack overflow in the loader
    - LP: #1438504
    - CVE-2015-2666
 -- Luis Henriques <luis.henriques@xxxxxxxxxxxxx>   Wed, 15 Apr 2015 13:21:11 +0100

** Changed in: linux-lts-utopic (Ubuntu Trusty)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1441291

Title:
  support EFI rtc on arm64

Status in linux package in Ubuntu:
  Fix Released
Status in linux-lts-utopic package in Ubuntu:
  New
Status in linux source package in Trusty:
  In Progress
Status in linux-lts-utopic source package in Trusty:
  Fix Released
Status in linux source package in Utopic:
  Fix Released
Status in linux-lts-utopic source package in Utopic:
  Invalid

Bug description:
  [Impact]
  ARM64 EFI platforms have no real time clock support. This can leave a system with a very out-of-date system clock. It can be somewhat mitigated by using NTP, but that still leaves issues in early boot (inaccurate last mount times, etc).

  [Test Case]
  if dmesg | grep -q 'rtc-efi: setting system clock'; then
    PASS
  else
    FAIL
  fi

  [Regression Risk]
  This enables a new driver only on ARM64, so the risk should be low to other platforms. The upstream patches do refactor the rtc-efi driver but, that driver was previously only compilable on ia64, which isn't supported by Ubuntu.

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