Trusty update to 3.13.11-ckt20 stable release

[Luis Henriques]

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 3.13.11-ckt20 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 3.13.11-ckt20 stable release:

n_tty: Merge .receive_buf() flavors
n_tty: Fix read buffer overwrite when no newline
KVM: x86: Fix lost interrupt on irr_pending race
tcp: Fix crash in TCP Fast Open
writeback: add missing INITIAL_JIFFIES init in global_update_bandwidth()
nbd: fix possible memory leak
mfd: kempld-core: Fix callback return value check
KVM: nVMX: mask unrestricted_guest if disabled on L0
spi: trigger trace event for message-done before mesg->complete
powerpc/pseries: Little endian fixes for post mobility device tree update
net: ethernet: pcnet32: Setup the SRAM and NOUFLO on Am79C97{3, 5}
perf: Fix irq_work 'tail' recursion
arm64: Use the reserved TTBR0 if context switching to the init_mm
selinux: fix sel_write_enforce broken return value
mm: fix anon_vma->degree underflow in anon_vma endless growing prevention
mm/memory hotplug: postpone the reset of obsolete pgdat
hfsplus: fix B-tree corruption after insertion at position 0
ARC: SA_SIGINFO ucontext regs off-by-one
writeback: fix possible underflow in write bandwidth calculation
iio: fix drivers that check buffer->scan_mask
iio: inv_mpu6050: Clear timestamps fifo while resetting hardware fifo
iio: core: Fix double free.
USB: ftdi_sio: Added custom PID for Synapse Wireless product
iwlwifi: dvm: run INIT firmware again upon .start()
USB: keyspan_pda: add new device id
cifs: smb2_clone_range() - exit on unhandled error
cifs: fix use-after-free bug in find_writable_file
can: flexcan: Deferred on Regulator return EPROBE_DEFER
usb: xhci: handle Config Error Change (CEC) in xhci driver
usb: xhci: apply XHCI_AVOID_BEI quirk to all Intel xHCI controllers
USB: ftdi_sio: Use jtag quirk for SNAP Connect E10
tty: serial: fsl_lpuart: clear receive flag on FIFO flush
radeon: Do not directly dereference pointers to BIOS area.
iio: imu: Use iio_trigger_get for indio_dev->trig assignment
dmaengine: edma: fix memory leak when terminating running transfers
dmaengine: omap-dma: Fix memory leak when terminating running transfer
x86/reboot: Add ASRock Q1900DC-ITX mainboard reboot quirk
mac80211: fix RX A-MPDU session reorder timer deletion
tcp: prevent fetching dst twice in early demux code
net: use for_each_netdev_safe() in rtnl_group_changelink()
xen-netfront: transmit fully GSO-sized packets
tcp: fix FRTO undo on cumulative ACK of SACKed range
PCI: cpcihp: Add missing curly braces in cpci_configure_slot()
[media] sh_veu: v4l2_dev wasn't set
[media] media: s5p-mfc: fix mmap support for 64bit arch
cpuidle: ACPI: do not overwrite name and description of C0
ioctx_alloc(): fix vma (and file) leak on failure
ALSA: hda/realtek - Make more stable to get pin sense for ALC283
be2iscsi: Fix kernel panic when device initialization fails
Defer processing of REQ_PREEMPT requests for blocked devices
ALSA: hda - Fix headphone pin config for Lifebook T731
ocfs2: _really_ sync the right range
ALSA: usb - Creative USB X-Fi Pro SB1095 volume knob support
iscsi target: fix oops when adding reject pdu
net/mlx4_en: Call register_netdevice in the proper location
ipv6: protect skb->sk accesses from recursive dereference inside the stack
tcp: tcp_make_synack() should clear skb->tstamp
8139cp: Call dev_kfree_skby_any instead of kfree_skb.
8139too: Call dev_kfree_skby_any instead of dev_kfree_skb.
r8169: Call dev_kfree_skby_any instead of dev_kfree_skb.
bonding: Call dev_kfree_skby_any instead of kfree_skb.
bnx2: Call dev_kfree_skby_any instead of dev_kfree_skb.
tg3: Call dev_kfree_skby_any instead of dev_kfree_skb.
ixgb: Call dev_kfree_skby_any instead of dev_kfree_skb.
benet: Call dev_kfree_skby_any instead of kfree_skb.
gianfar: Carefully free skbs in functions called by netpoll.
ip_forward: Drop frames with attached skb->sk
tcp: fix possible deadlock in tcp_send_fin()
tcp: avoid looping in tcp_send_fin()
net: do not deplete pfmemalloc reserve
net: fix crash in build_skb()
ipv4: Missing sk_nulls_node_init() in ping_unhash().
Linux 3.13.11-ckt20

The following patches from 3.13.11-ckt20 were already applied in the Trusty kernel:

Input: serio - add firmware_id sysfs attribute
Input: i8042 - add firmware_id support
Input: Add INPUT_PROP_TOPBUTTONPAD device property
Input: synaptics - report INPUT_PROP_TOPBUTTONPAD property
Input: synaptics - add a matches_pnp_id helper function
Input: synaptics - change min/max quirk table to pnp-id matching
Input: psmouse - add psmouse_matches_pnp_id helper function
Input: synaptics - split synaptics_resolution(), query first
Input: synaptics - log queried and quirked dimension values
Input: synaptics - remove obsolete min/max quirk for X240
Input: synaptics - add min/max quirk for pnp-id LEN2002 (Edge E531)
Input: synaptics - add min/max quirk for Lenovo T440s
Input: synaptics - adjust min/max for Lenovo ThinkPad X1 Carbon 2nd
Input: synaptics - adjust min/max on Thinkpad E540
Input: synaptics - support min/max board id in min_max_pnpid_table
Input: synaptics - skip quirks when post-2013 dimensions
fs: take i_mutex during prepare_binprm for set[ug]id executables
IB/uverbs: Prevent integer overflow in ib_umem_get address arithmetic

Additionally, the following patch was also applied (from 3.13.11-queue branch) to fix a build failure on powerpc:

[3.13-stable only] Revert "gianfar: Carefully free skbs in functions called by netpoll."

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.13.0-54.91

---------------
linux (3.13.0-54.91) trusty; urgency=medium

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1458618

  [ Upstream Kernel Changes ]

  * [3.13-stable only] Revert "gianfar: Carefully free skbs in functions
    called by netpoll."
    - LP: #1454746

linux (3.13.0-54.90) trusty; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1458618

  [ Andy Whitcroft ]

  * [Config] push off linux-lts-{utopic, vivid}-tools-common
    - LP: #1405807

  [ Brad Figg ]

  * hyper-v -- add hid and fb drivers to linux-virtual
    - LP: #1444179

  [ Upstream Kernel Changes ]

  * DT doc: net: cpsw mac-address is optional
    - LP: #1452628
  * net: cpsw: Add missing return value
    - LP: #1452628
  * net: cpsw: header, Add missing include
    - LP: #1452628
  * net: cpsw: Add am33xx MACID readout
    - LP: #1452628
  * am33xx: define syscon control module device node
    - LP: #1452628
  * arm: dts: am33xx, Add syscon phandle to cpsw node
    - LP: #1452628
  * net: cpsw: do not register cpts twice
    - LP: #1452620
  * x86: kvm: Revert "remove sched notifier for cross-cpu migrations"
    - LP: #1450584
  * x86: vdso: fix pvclock races with task migration
    - LP: #1450584
  * n_tty: Fix read buffer overwrite when no newline
    - LP: #1381005, #1454746
  * KVM: x86: Fix lost interrupt on irr_pending race
    - LP: #1454746
  * writeback: add missing INITIAL_JIFFIES init in
    global_update_bandwidth()
    - LP: #1454746
  * nbd: fix possible memory leak
    - LP: #1454746
  * mfd: kempld-core: Fix callback return value check
    - LP: #1454746
  * KVM: nVMX: mask unrestricted_guest if disabled on L0
    - LP: #1454746
  * spi: trigger trace event for message-done before mesg->complete
    - LP: #1454746
  * powerpc/pseries: Little endian fixes for post mobility device tree
    update
    - LP: #1454746
  * net: ethernet: pcnet32: Setup the SRAM and NOUFLO on Am79C97{3, 5}
    - LP: #1454746
  * perf: Fix irq_work 'tail' recursion
    - LP: #1454746
  * arm64: Use the reserved TTBR0 if context switching to the init_mm
    - LP: #1454746
  * selinux: fix sel_write_enforce broken return value
    - LP: #1454746
  * mm: fix anon_vma->degree underflow in anon_vma endless growing
    prevention
    - LP: #1454746
  * mm/memory hotplug: postpone the reset of obsolete pgdat
    - LP: #1454746
  * hfsplus: fix B-tree corruption after insertion at position 0
    - LP: #1454746
  * ARC: SA_SIGINFO ucontext regs off-by-one
    - LP: #1454746
  * writeback: fix possible underflow in write bandwidth calculation
    - LP: #1454746
  * iio: fix drivers that check buffer->scan_mask
    - LP: #1454746
  * iio: inv_mpu6050: Clear timestamps fifo while resetting hardware fifo
    - LP: #1454746
  * iio: core: Fix double free.
    - LP: #1454746
  * USB: ftdi_sio: Added custom PID for Synapse Wireless product
    - LP: #1454746
  * iwlwifi: dvm: run INIT firmware again upon .start()
    - LP: #1454746
  * USB: keyspan_pda: add new device id
    - LP: #1454746
  * cifs: smb2_clone_range() - exit on unhandled error
    - LP: #1454746
  * cifs: fix use-after-free bug in find_wri...