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[Luis Henriques <luis.henriques@xxxxxxxxxxxxx>]

Public bug reported:

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 3.16.7-ckt19 upstream stable
       patch set is now available. It should be included in the Ubuntu
       kernel as well.

       git://kernel.ubuntu.com/ubuntu/linux.git

    TEST CASE: TBD

       The following patches are in the 3.16.7-ckt19 stable release:

ARM: 8429/1: disable GCC SRA optimization
CIFS: fix type confusion in copy offload ioctl
hwmon: (nct6775) Swap STEP_UP_TIME and STEP_DOWN_TIME registers for most chips
x86/apic: Serialize LVTT and TSC_DEADLINE writes
arm64: head.S: initialise mdcr_el2 in el2_setup
kvm: don't try to register to KVM_FAST_MMIO_BUS for non mmio eventfd
kvm: factor out core eventfd assign/deassign logic
kvm: fix double free for fast mmio eventfd
kvm: fix zero length mmio searching
ARM: fix Thumb2 signal handling when ARMv6 is enabled
powerpc/boot: Specify ABI v2 when building an LE boot wrapper
powerpc/mm: Recompute hash value after a failed update
x86/platform: Fix Geode LX timekeeping in the generic x86 build
arm64: compat: fix vfp save/restore across signal handlers in big-endian
arm64: errata: add module build workaround for erratum #843419
arm64: KVM: Disable virtual timer even if the guest is not using it
arm: KVM: Disable virtual timer even if the guest is not using it
hp-wmi: Add missing __init annotations to initialization code
hp-wmi: limit hotkey enable
zram: fix possible use after free in zcomp_create()
perf header: Fixup reading of HEADER_NRCPUS feature
spi: spi-pxa2xx: Check status register to determine if SSSR_TINT is disabled
spi: Fix documentation of spi_alloc_master()
USB: option: add ZTE PIDs
drm/vmwgfx: Fix up user_dmabuf refcounting
ARM: dts: omap3-beagle: make i2c3, ddc and tfp410 gpio work again
Btrfs: fix read corruption of compressed and shared extents
btrfs: skip waiting on ordered range for special files
usb: chipidea: udc: using the correct stall implementation
net: mvneta: fix DMA buffer unmapping in mvneta_rx()
iser-target: remove command with state ISTATE_REMOVE
staging: ion: fix corruption of ion_import_dma_buf
KVM: x86: trap AMD MSRs for the TSeg base and mask
usb: Use the USB_SS_MULT() macro to get the burst multiplier.
xhci: give command abortion one more chance before killing xhci
usb: xhci: Clear XHCI_STATE_DYING on start
usb: xhci: Allow usb_add/remove_hcd() to be called repeatedly
xhci: change xhci 1.0 only restrictions to support xhci 1.1
xhci-mem: Use setup_timer
xhci: init command timeout timer earlier to avoid deleting it uninitialized
spi: xtensa-xtfpga: fix register endianness
disabling oplocks/leases via module parm enable_oplocks broken for SMB3
cifs: use server timestamp for ntlmv2 authentication
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
ASoC: pxa: pxa2xx-ac97: fix dma requestor lines
ocfs2/dlm: fix deadlock when dispatch assert master
drm/i915/bios: handle MIPI Sequence Block v3+ gracefully
drm/qxl: only report first monitor as connected if we have no state
PCI: Fix devfn for VPD access through function 0
PCI: Use function 0 VPD for identical functions, regular VPD for others
netfilter: nft_compat: skip family comparison in case of NFPROTO_UNSPEC
ASoC: fix broken pxa SoC support
ARM: dts: omap5-uevm.dts: fix i2c5 pinctrl offsets
vxlan: set needed headroom correctly
Revert "ARM: orion5x: fix legacy orion5x IRQ numbers"
jbd2: avoid infinite loop when destroying aborted journal
asix: Don't reset PHY on if_up for ASIX 88772
asix: Do full reset during ax88772_bind
fib_rules: Fix dump_rules() not to exit early
net/xen-netfront: only napi_synchronize() if running
cpufreq: intel_pstate: Remove unnecessary type casting in div_s64() call
intel_pstate: Fix overflow in busy_scaled due to long delay
tools lib traceevent: Fix string handling in heterogeneous arch environments
perf tools: Fix copying of /proc/kcore
m68k: Define asmlinkage_protect
UBI: Validate data_size
UBI: return ENOSPC if no enough space available
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
drm/qxl: recreate the primary surface when the bo is not primary
genirq: Fix race in register_irq_proc()
x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at runtime, instead of top-down
Use WARN_ON_ONCE for missing X86_FEATURE_NRIPS
mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault
x86/mm: Set NX on gap between __ex_table and rodata
clocksource: Fix abs() usage w/ 64bit values
dmaengine: dw: properly read DWC_PARAMS register
mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)
drm/vmwgfx: Fix kernel NULL pointer dereference on older hardware
fs: if a coredump already exists, unlink and recreate with O_EXCL
sctp: donot reset the overall_error_count in SHUTDOWN_RECEIVE state
ipc/sem.c: fully initialize sem_array before making it visible
drivers: usb :fsl: Implement Workaround for USB Erratum A007792
drivers: usb: fsl: Workaround for USB erratum-A005275
l2tp: protect tunnel->del_work by ref_count
af_unix: Convert the unix_sk macro to an inline function for type safety
af_unix: return data from multiple SKBs on recv() with MSG_PEEK flag
net/unix: fix logic about sk_peek_offset
skbuff: Fix skb checksum flag on skb pull
skbuff: Fix skb checksum partial check.
net: add pfmemalloc check in sk_add_backlog()
ppp: don't override sk->sk_state in pppoe_flush_dev()
ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings
ovs: do not allocate memory from offline numa node
netlink: Trim skb to alloc size to avoid MSG_TRUNC
[stable-only] net: add length argument to skb_copy_and_csum_datagram_iovec
KEYS: Fix race between key destruction and finding a keyring by name
KEYS: Fix crash when attempt to garbage collect an uninstantiated keyring
KEYS: Don't permit request_key() to construct a new keyring
Btrfs: update fix for read corruption of compressed and shared extents
Linux 3.16.7-ckt19

The following patches from 3.16.7-ckt19 were already applied to the Utopic kernel:
dcache: Handle escaped paths in prepend_path
vfs: Test for and handle paths that are unreachable from their mnt_root
USB: whiteheat: fix potential null-deref at probe
Initialize msg/shm IPC objects before doing ipc_addid()

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: linux (Ubuntu Trusty)
     Importance: Undecided
         Status: New


** Tags: kernel-stable-tracking-bug

** Tags added: kernel-stable-tracking-bug

** Also affects: linux (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu)
       Status: New => Invalid

-- 
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https://bugs.launchpad.net/bugs/1514911

Title:
  Trusty update to 3.16.7-ckt19 stable release

Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Trusty:
  New

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 3.16.7-ckt19 upstream stable
         patch set is now available. It should be included in the Ubuntu
         kernel as well.

         git://kernel.ubuntu.com/ubuntu/linux.git

      TEST CASE: TBD

         The following patches are in the 3.16.7-ckt19 stable release:

  ARM: 8429/1: disable GCC SRA optimization
  CIFS: fix type confusion in copy offload ioctl
  hwmon: (nct6775) Swap STEP_UP_TIME and STEP_DOWN_TIME registers for most chips
  x86/apic: Serialize LVTT and TSC_DEADLINE writes
  arm64: head.S: initialise mdcr_el2 in el2_setup
  kvm: don't try to register to KVM_FAST_MMIO_BUS for non mmio eventfd
  kvm: factor out core eventfd assign/deassign logic
  kvm: fix double free for fast mmio eventfd
  kvm: fix zero length mmio searching
  ARM: fix Thumb2 signal handling when ARMv6 is enabled
  powerpc/boot: Specify ABI v2 when building an LE boot wrapper
  powerpc/mm: Recompute hash value after a failed update
  x86/platform: Fix Geode LX timekeeping in the generic x86 build
  arm64: compat: fix vfp save/restore across signal handlers in big-endian
  arm64: errata: add module build workaround for erratum #843419
  arm64: KVM: Disable virtual timer even if the guest is not using it
  arm: KVM: Disable virtual timer even if the guest is not using it
  hp-wmi: Add missing __init annotations to initialization code
  hp-wmi: limit hotkey enable
  zram: fix possible use after free in zcomp_create()
  perf header: Fixup reading of HEADER_NRCPUS feature
  spi: spi-pxa2xx: Check status register to determine if SSSR_TINT is disabled
  spi: Fix documentation of spi_alloc_master()
  USB: option: add ZTE PIDs
  drm/vmwgfx: Fix up user_dmabuf refcounting
  ARM: dts: omap3-beagle: make i2c3, ddc and tfp410 gpio work again
  Btrfs: fix read corruption of compressed and shared extents
  btrfs: skip waiting on ordered range for special files
  usb: chipidea: udc: using the correct stall implementation
  net: mvneta: fix DMA buffer unmapping in mvneta_rx()
  iser-target: remove command with state ISTATE_REMOVE
  staging: ion: fix corruption of ion_import_dma_buf
  KVM: x86: trap AMD MSRs for the TSeg base and mask
  usb: Use the USB_SS_MULT() macro to get the burst multiplier.
  xhci: give command abortion one more chance before killing xhci
  usb: xhci: Clear XHCI_STATE_DYING on start
  usb: xhci: Allow usb_add/remove_hcd() to be called repeatedly
  xhci: change xhci 1.0 only restrictions to support xhci 1.1
  xhci-mem: Use setup_timer
  xhci: init command timeout timer earlier to avoid deleting it uninitialized
  spi: xtensa-xtfpga: fix register endianness
  disabling oplocks/leases via module parm enable_oplocks broken for SMB3
  cifs: use server timestamp for ntlmv2 authentication
  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
  ASoC: pxa: pxa2xx-ac97: fix dma requestor lines
  ocfs2/dlm: fix deadlock when dispatch assert master
  drm/i915/bios: handle MIPI Sequence Block v3+ gracefully
  drm/qxl: only report first monitor as connected if we have no state
  PCI: Fix devfn for VPD access through function 0
  PCI: Use function 0 VPD for identical functions, regular VPD for others
  netfilter: nft_compat: skip family comparison in case of NFPROTO_UNSPEC
  ASoC: fix broken pxa SoC support
  ARM: dts: omap5-uevm.dts: fix i2c5 pinctrl offsets
  vxlan: set needed headroom correctly
  Revert "ARM: orion5x: fix legacy orion5x IRQ numbers"
  jbd2: avoid infinite loop when destroying aborted journal
  asix: Don't reset PHY on if_up for ASIX 88772
  asix: Do full reset during ax88772_bind
  fib_rules: Fix dump_rules() not to exit early
  net/xen-netfront: only napi_synchronize() if running
  cpufreq: intel_pstate: Remove unnecessary type casting in div_s64() call
  intel_pstate: Fix overflow in busy_scaled due to long delay
  tools lib traceevent: Fix string handling in heterogeneous arch environments
  perf tools: Fix copying of /proc/kcore
  m68k: Define asmlinkage_protect
  UBI: Validate data_size
  UBI: return ENOSPC if no enough space available
  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
  drm/qxl: recreate the primary surface when the bo is not primary
  genirq: Fix race in register_irq_proc()
  x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at runtime, instead of top-down
  Use WARN_ON_ONCE for missing X86_FEATURE_NRIPS
  mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault
  x86/mm: Set NX on gap between __ex_table and rodata
  clocksource: Fix abs() usage w/ 64bit values
  dmaengine: dw: properly read DWC_PARAMS register
  mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)
  drm/vmwgfx: Fix kernel NULL pointer dereference on older hardware
  fs: if a coredump already exists, unlink and recreate with O_EXCL
  sctp: donot reset the overall_error_count in SHUTDOWN_RECEIVE state
  ipc/sem.c: fully initialize sem_array before making it visible
  drivers: usb :fsl: Implement Workaround for USB Erratum A007792
  drivers: usb: fsl: Workaround for USB erratum-A005275
  l2tp: protect tunnel->del_work by ref_count
  af_unix: Convert the unix_sk macro to an inline function for type safety
  af_unix: return data from multiple SKBs on recv() with MSG_PEEK flag
  net/unix: fix logic about sk_peek_offset
  skbuff: Fix skb checksum flag on skb pull
  skbuff: Fix skb checksum partial check.
  net: add pfmemalloc check in sk_add_backlog()
  ppp: don't override sk->sk_state in pppoe_flush_dev()
  ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings
  ovs: do not allocate memory from offline numa node
  netlink: Trim skb to alloc size to avoid MSG_TRUNC
  [stable-only] net: add length argument to skb_copy_and_csum_datagram_iovec
  KEYS: Fix race between key destruction and finding a keyring by name
  KEYS: Fix crash when attempt to garbage collect an uninstantiated keyring
  KEYS: Don't permit request_key() to construct a new keyring
  Btrfs: update fix for read corruption of compressed and shared extents
  Linux 3.16.7-ckt19

  The following patches from 3.16.7-ckt19 were already applied to the Utopic kernel:
  dcache: Handle escaped paths in prepend_path
  vfs: Test for and handle paths that are unreachable from their mnt_root
  USB: whiteheat: fix potential null-deref at probe
  Initialize msg/shm IPC objects before doing ipc_addid()

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