This bug was fixed in the package linux - 3.19.0-66.74

---------------
linux (3.19.0-66.74) vivid; urgency=low

  [ Seth Forshee ]

  * Release Tracking Bug
    - LP: #1604153

  * CVE-2016-1237
    - posix_acl: Add set_posix_acl
    - nfsd: check permissions when setting ACLs

  * changelog: add CVEs as first class citizens (LP: #1604344)
    - use CVE numbers in changelog

  * CVE-2016-5243 (LP: #1589036)
    - tipc: fix an infoleak in tipc_nl_compat_link_dump

  * CVE-2016-4470
    - KEYS: potential uninitialized variable

  * CVE-2016-4794 (LP: #1581871)
    - percpu: fix synchronization between chunk->map_extend_work and chunk
      destruction
    - percpu: fix synchronization between synchronous map extension and chunk
      destruction

  * qeth: delete napi struct when removing a qeth device (LP: #1601831)
    - qeth: delete napi struct when removing a qeth device

  * arm64: statically link rtc-efi (LP: #1583738)
    - [Config] Link rtc-efi statically on arm64

  * linux: Homogenize changelog format across releases (LP: #1599562)
    - Revert "UBUNTU: [debian] BugLink: close LP: bugs only for Launchpad urls"
    - [Debian] git-ubuntu-log -- switch to bug order
    - [Debian] git-ubuntu-log -- fix empty section formatting
    - [Debian] git-ubuntu-log -- output should be utf-8
    - [Debian] git-ubuntu-log -- handle invalid or private bugs
    - [Debian] git-ubuntu-log -- wrap long bug and commit titles
    - [Debian] git-ubuntu-log -- ensure we get the last commit
    - [Debian] git-ubuntu-log -- prevent bug references being split
    - [Debian] git-ubuntu-log -- git log output is UTF-8

  * exercising ptys causes a kernel oops (LP: #1586418)
    - devpts: fix null pointer dereference on failed memory allocation

  * the kernel hangs when reboot or shutdown on a lenovo baytrail-m based
    machine (LP: #1597564)
    - usb: xhci: Makefile: move xhci-pci and xhci-plat-hcd after xhci-hcd

  * [i915_bpo][SKL] Display core init/uninit updates (LP: #1595803)
    - SAUCE: i915_bpo: drm/i915: Extract a intel_power_well_enable() function
    - SAUCE: i915_bpo: drm/i915: Extract a intel_power_well_disable() function
    - SAUCE: i915_bpo: drm/i915/skl: Making DC6 entry is the last call in 
suspend
      flow.
    - SAUCE: i915_bpo: drm/i915: Kill intel_runtime_pm_disable()
    - SAUCE: i915_bpo: drm/i915/gen9: csr_init after runtime pm enable
    - SAUCE: i915_bpo: drm/i915: use correct power domain for csr loading
    - SAUCE: i915_bpo: drm/i915/gen9: Don't try to load garbage dmc firmware on
      resume
    - SAUCE: i915_bpo: drm/i915/skl: Removed assert for csr-fw-loading check
      during disabling dc6
    - SAUCE: i915_bpo: drm/i915: fix the power well ID for always on wells
    - SAUCE: i915_bpo: drm/i915: fix lookup_power_well for power wells without 
any
      domain
    - SAUCE: i915_bpo: drm/i915: Make turning on/off PW1 and Misc I/O part of 
the
      init/fini sequences

 -- Seth Forshee <seth.fors...@canonical.com>  Tue, 19 Jul 2016 09:07:26
-0500

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

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-1237

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-4470

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-4794

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-5243

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1597564

Title:
  the kernel hangs when reboot or shutdown on a lenovo baytrail-m based
  machine

Status in HWE Next:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Vivid:
  Fix Released

Bug description:
  1. System got hang on reboot of installation phase 1;
  2. Power off system by long-press power button, then power on system again.
  3. System got hang on power off of installation phase 2.

  The hang issue blocked the installation. Can not finish the
  installation procession.

  This bug is for tracking purposes; please do not triage.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1597564/+subscriptions

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