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[Launchpad Bug Tracker <1349028@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.4.0-179.209

---------------
linux (4.4.0-179.209) xenial; urgency=medium

  * xenial/linux: 4.4.0-179.209 -proposed tracker (LP: #1874804)

  * Add debian/rules targets to compile/run kernel selftests (LP: #1874286)
    - [Packaging] add support to compile/run selftests

  * getitimer returns it_value=0 erroneously (LP: #1349028)
    - [Config] CONTEXT_TRACKING_FORCE policy should be unset

  * CVE-2020-11608
    - media: ov519: add missing endpoint sanity checks

  * CVE-2019-19060
    - iio: imu: adis16400: release allocated memory on failure

  * Xenial update: 4.4.219 upstream stable release (LP: #1874045)
    - drm/bochs: downgrade pci_request_region failure from error to warning
    - ipv4: fix a RCU-list lock in fib_triestat_seq_show
    - net, ip_tunnel: fix interface lookup with no key
    - sctp: fix possibly using a bad saddr with a given dst
    - l2tp: Correctly return -EBADF from pppol2tp_getname.
    - net: l2tp: Make l2tp_ip6 namespace aware
    - l2tp: fix race in l2tp_recv_common()
    - l2tp: ensure session can't get removed during pppol2tp_session_ioctl()
    - l2tp: fix duplicate session creation
    - l2tp: Refactor the codes with existing macros instead of literal number
    - l2tp: ensure sessions are freed after their PPPOL2TP socket
    - l2tp: fix race between l2tp_session_delete() and l2tp_tunnel_closeall()
    - usb: gadget: uac2: Drop unused device qualifier descriptor
    - usb: gadget: printer: Drop unused device qualifier descriptor
    - padata: always acquire cpu_hotplug_lock before pinst->lock
    - mm: mempolicy: require at least one nodeid for MPOL_PREFERRED
    - net: stmmac: dwmac1000: fix out-of-bounds mac address reg setting
    - random: always use batched entropy for get_random_u{32,64}
    - tools/accounting/getdelays.c: fix netlink attribute length
    - power: supply: axp288_charger: Fix unchecked return value
    - ASoC: jz4740-i2s: Fix divider written at incorrect offset in register
    - IB/hfi1: Call kobject_put() when kobject_init_and_add() fails
    - Bluetooth: RFCOMM: fix ODEBUG bug in rfcomm_dev_ioctl
    - RDMA/cm: Update num_paths in cma_resolve_iboe_route error flow
    - clk: qcom: rcg: Return failure for RCG update
    - drm_dp_mst_topology: fix broken drm_dp_sideband_parse_remote_dpcd_read()
    - Linux 4.4.219

  * Xenial update: 4.4.218 upstream stable release (LP: #1873852)
    - spi: qup: call spi_qup_pm_resume_runtime before suspending
    - powerpc: Include .BTF section
    - ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes
    - spi/zynqmp: remove entry that causes a cs glitch
    - drm/exynos: dsi: propagate error value and silence meaningless warning
    - drm/exynos: dsi: fix workaround for the legacy clock name
    - altera-stapl: altera_get_note: prevent write beyond end of 'key'
    - USB: Disable LPM on WD19's Realtek Hub
    - usb: quirks: add NO_LPM quirk for RTL8153 based ethernet adapters
    - USB: serial: option: add ME910G1 ECM composition 0x110b
    - usb: host: xhci-plat: add a shutdown
    - USB: serial: pl2303: add device-id for HP LD381
    - ALSA: line6: Fix endless MIDI read loop
    - ALSA: seq: virmidi: Fix running status after receiving sysex
    - ALSA: seq: oss: Fix running status after receiving sysex
    - ALSA: pcm: oss: Avoid plugin buffer overflow
    - ALSA: pcm: oss: Remove WARNING from snd_pcm_plug_alloc() checks
    - staging: rtl8188eu: Add device id for MERCUSYS MW150US v2
    - staging/speakup: fix get_word non-space look-ahead
    - intel_th: Fix user-visible error codes
    - rtc: max8907: add missing select REGMAP_IRQ
    - memcg: fix NULL pointer dereference in __mem_cgroup_usage_unregister_event
    - mm: slub: be more careful about the double cmpxchg of freelist
    - mm, slub: prevent kmalloc_node crashes and memory leaks
    - x86/mm: split vmalloc_sync_all()
    - USB: cdc-acm: fix close_delay and closing_wait units in TIOCSSERIAL
    - USB: cdc-acm: fix rounding error in TIOCSSERIAL
    - kbuild: Disable -Wpointer-to-enum-cast
    - futex: Fix inode life-time issue
    - futex: Unbreak futex hashing
    - arm64: smp: fix smp_send_stop() behaviour
    - Revert "drm/dp_mst: Skip validating ports during destruction, just ref"
    - hsr: fix general protection fault in hsr_addr_is_self()
    - net: dsa: Fix duplicate frames flooded by learning
    - net_sched: cls_route: remove the right filter from hashtable
    - net_sched: keep alloc_hash updated after hash allocation
    - NFC: fdp: Fix a signedness bug in fdp_nci_send_patch()
    - slcan: not call free_netdev before rtnl_unlock in slcan_open
    - vxlan: check return value of gro_cells_init()
    - hsr: use rcu_read_lock() in hsr_get_node_{list/status}()
    - hsr: add restart routine into hsr_get_node_list()
    - hsr: set .netnsok flag
    - vhost: Check docket sk_family instead of call getname
    - IB/ipoib: Do not warn if IPoIB debugfs doesn't exist
    - uapi glibc compat: fix outer guard of net device flags enum
    - KVM: VMX: Do not allow reexecute_instruction() when skipping MMIO instr
    - drivers/hwspinlock: use correct radix tree API
    - net: ipv4: don't let PMTU updates increase route MTU
    - cpupower: avoid multiple definition with gcc -fno-common
    - dt-bindings: net: FMan erratum A050385
    - scsi: ipr: Fix softlockup when rescanning devices in petitboot
    - mac80211: Do not send mesh HWMP PREQ if HWMP is disabled
    - sxgbe: Fix off by one in samsung driver strncpy size arg
    - i2c: hix5hd2: add missed clk_disable_unprepare in remove
    - perf probe: Do not depend on dwfl_module_addrsym()
    - scripts/dtc: Remove redundant YYLOC global declaration
    - scsi: sd: Fix optimal I/O size for devices that change reported values
    - mac80211: mark station unauthorized before key removal
    - genirq: Fix reference leaks on irq affinity notifiers
    - vti[6]: fix packet tx through bpf_redirect() in XinY cases
    - xfrm: fix uctx len check in verify_sec_ctx_len
    - xfrm: add the missing verify_sec_ctx_len check in xfrm_add_acquire
    - xfrm: policy: Fix doulbe free in xfrm_policy_timer
    - vti6: Fix memory leak of skb if input policy check fails
    - tools: Let O= makes handle a relative path with -C option
    - USB: serial: option: add support for ASKEY WWHC050
    - USB: serial: option: add BroadMobi BM806U
    - USB: serial: option: add Wistron Neweb D19Q1
    - USB: cdc-acm: restore capability check order
    - USB: serial: io_edgeport: fix slab-out-of-bounds read in
      edge_interrupt_callback
    - usb: musb: fix crash with highmen PIO and usbmon
    - media: flexcop-usb: fix endpoint sanity check
    - media: usbtv: fix control-message timeouts
    - staging: rtl8188eu: Add ASUS USB-N10 Nano B1 to device table
    - staging: wlan-ng: fix use-after-free Read in hfa384x_usbin_callback
    - libfs: fix infoleak in simple_attr_read()
    - media: ov519: add missing endpoint sanity checks
    - media: dib0700: fix rc endpoint lookup
    - media: stv06xx: add missing descriptor sanity checks
    - media: xirlink_cit: add missing descriptor sanity checks
    - vt: selection, introduce vc_is_sel
    - vt: ioctl, switch VT_IS_IN_USE and VT_BUSY to inlines
    - vt: switch vt_dont_switch to bool
    - vt: vt_ioctl: remove unnecessary console allocation checks
    - vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
    - locking/atomic, kref: Add kref_read()
    - vt: vt_ioctl: fix use-after-free in vt_in_use()
    - bpf: Explicitly memset the bpf_attr structure
    - net: ks8851-ml: Fix IO operations, again
    - perf map: Fix off by one in strncpy() size argument
    - Linux 4.4.218

  * Pop sound from build-in speaker during cold boot and resume from S3
    (LP: #1866357) // Xenial update: 4.4.218 upstream stable release
    (LP: #1873852)
    - ALSA: hda/realtek: Fix pop noise on ALC225

  * CVE-2020-11494
    - slcan: Don't transmit uninitialized stack data in padding

  * add_key05 from ubuntu_ltp_syscalls failed (LP: #1869644)
    - KEYS: reaching the keys quotas correctly

 -- Kleber Sacilotto de Souza <kleber.souza@xxxxxxxxxxxxx>  Fri, 24 Apr
2020 19:06:47 +0200

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

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-19060

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-11608

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https://bugs.launchpad.net/bugs/1349028

Title:
  getitimer returns it_value=0 erroneously

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Trusty:
  Fix Released
Status in linux source package in Utopic:
  Fix Released
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Eoan:
  Fix Committed
Status in linux source package in Focal:
  Fix Released

Bug description:
  According to the 'getitimer()' man page: "The element it_value is set
  to the amount of time remaining on the timer, or zero if the  timer is
  disabled.  Similarly, it_interval is set to the reset value."

  As such the following Perl program should never exit:

      use Time::HiRes;
      $SIG{VTALRM} = sub { };
      Time::HiRes::setitimer(&Time::HiRes::ITIMER_VIRTUAL, 0.5, 0.4);
      while (1) {
          my @t = Time::HiRes::getitimer(&Time::HiRes::ITIMER_VIRTUAL);
          exit 0 if $t[0] == 0;
      }

  and on linux-image 3.11.0-18-generic (and all other systems tested) it
  loops forever but 3.13.0-32-generic it exits.  Have not bisected
  between those kernels, nor am I likely to be able to do so soon.

  This Perl program shows the timer countdown:

  use Time::HiRes;
  my $r = [Time::HiRes::gettimeofday()];
  sub display {
      my ($desc) = @_;
      my @t = Time::HiRes::getitimer(&Time::HiRes::ITIMER_VIRTUAL);
      my $i = Time::HiRes::tv_interval($r);
      printf "%s: elasped=%.8f; time left=%.6f reset time=%.6f\n", $desc,
      $i,@t;
  }
  $SIG{VTALRM} = sub {
      display('VTALRM');
      exit;
  };
  Time::HiRes::setitimer(&Time::HiRes::ITIMER_VIRTUAL, 0.5, 0.4);
  while (1) {
      display('inloop');
  }

  on other (working) systems it gives:

  inloop: elasped=1.65178400; time left=0.001000 reset time=0.401000
  inloop: elasped=1.65184200; time left=0.001000 reset time=0.401000
  inloop: elasped=1.65186800; time left=0.001000 reset time=0.401000
  inloop: elasped=1.65192300; time left=0.001000 reset time=0.401000
  inloop: elasped=1.65198100; time left=0.001000 reset time=0.401000
  VTALRM: elasped=1.65209800; time left=0.400000 reset time=0.401000
  (end of file)

  but on the 3.13.0-32-generic or later kernel I get:

  inloop: elasped=0.54692100; time left=0.000033 reset time=0.400000
  inloop: elasped=0.54692800; time left=0.000026 reset time=0.400000
  inloop: elasped=0.54693500; time left=0.000020 reset time=0.400000
  inloop: elasped=0.54694100; time left=0.000013 reset time=0.400000
  inloop: elasped=0.54694800; time left=0.000007 reset time=0.400000
  inloop: elasped=0.54695500; time left=0.000000 reset time=0.400000
  inloop: elasped=0.54696200; time left=0.004000 reset time=0.400000
  [...]
  VTALRM: elasped=0.55013600; time left=0.397062 reset time=0.400000
  (end of file)

  The reset time also looks dodgy.

  Hardware is an Intel Core i7-920 on Asus P6T Deluxe v2 (X58)
  motherboard and hasn't changed.

  
  Requested information:

  Ubuntu 3.13.0-32.57-generic 3.13.11.4

  Description:	Ubuntu 14.04.1 LTS
  Release:	14.04

  # apt-cache policy linux-image-generic
  linux-image-generic:
    Installed: 3.13.0.32.38
    Candidate: 3.13.0.32.38
    Version table:
   *** 3.13.0.32.38 0
          500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
          500 http://us.archive.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
          500 http://us.archive.ubuntu.com/ubuntu/ trusty-proposed/main amd64 Packages
          500 http://ppa.launchpad.net/canonical-kernel-team/ppa/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status
       3.13.0.24.28 0
          500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
  --- 
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  tivrusky   3009 F.... pulseaudio
   /dev/snd/controlC0:  tivrusky   3009 F.... pulseaudio
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=c026abdc-9fee-425c-b5ae-020bf6ea2ad6
  IwConfig:
   eth0      no wireless extensions.
   
   eth1      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: System manufacturer System Product Name
  Package: linux (not installed)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: root=UUID=3ea7a4cb-eade-4906-b545-5133d8c14080 ro quiet splash
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-32-generic N/A
   linux-backports-modules-3.13.0-32-generic  N/A
   linux-firmware                             1.127.5
  RfKill:
   0: hci0: Bluetooth
   	Soft blocked: no
   	Hard blocked: no
  Tags:  trusty
  Uname: Linux 3.13.0-32-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2014-06-10 (46 days ago)
  UserGroups: adm admin cdrom dialout lpadmin mythtv plugdev sambashare vboxusers
  WifiSyslog: Jul 26 20:23:08 zwei NetworkManager[1174]: <info> Policy set 'Wired connection 2' (eth1) as default for IPv6 routing and DNS.
  WpaSupplicantLog:
   
  _MarkForUpload: True
  dmi.bios.date: 02/04/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0203
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: P6T DELUXE V2
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0203:bd02/04/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6TDELUXEV2:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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