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[Launchpad Bug Tracker <1500493@xxxxxxxxxxxxxxxxxx>]

** Branch linked: lp:ubuntu/trusty-proposed/linux-lts-vivid

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https://bugs.launchpad.net/bugs/1500493

Title:
  Vivid update to 3.19.8-ckt7 stable release

Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Vivid:
  Fix Committed

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 3.19.8-ckt7 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 3.19.8-ckt7 stable release:

  x86/ldt: Make modify_ldt synchronous
  x86/ldt: Correct LDT access in single stepping logic
  x86/ldt: Correct FPU emulation access to LDT
  md: flush ->event_work before stopping array.
  ipv6: addrconf: validate new MTU before applying it
  virtio-net: drop NETIF_F_FRAGLIST
  RDS: verify the underlying transport exists before creating a connection
  xen/gntdev: convert priv->lock to a mutex
  xen/gntdevt: Fix race condition in gntdev_release()
  PCI: Restore PCI_MSIX_FLAGS_BIRMASK definition
  USB: qcserial/option: make AT URCs work for Sierra Wireless MC7305/MC7355
  USB: qcserial: Add support for Dell Wireless 5809e 4G Modem
  nfsd: Drop BUG_ON and ignore SECLABEL on absent filesystem
  usb: chipidea: ehci_init_driver is intended to call one time
  crypto: qat - Fix invalid synchronization between register/unregister sym algs
  crypto: ixp4xx - Remove bogus BUG_ON on scattered dst buffer
  mfd: arizona: Fix initialisation of the PM runtime
  xen-blkfront: don't add indirect pages to list when !feature_persistent
  xen-blkback: replace work_pending with work_busy in purge_persistent_gnt()
  usb: gadget: f_uac2: fix calculation of uac2->p_interval
  hwrng: core - correct error check of kthread_run call
  USB: sierra: add 1199:68AB device ID
  regmap: regcache-rbtree: Clean new present bits on present bitmap resize
  target/iscsi: Fix double free of a TUR followed by a solicited NOPOUT
  rbd: fix copyup completion race
  md/raid1: extend spinlock to protect raid1_end_read_request against inconsistencies
  target: REPORT LUNS should return LUN 0 even for dynamic ACLs
  MIPS: Fix sched_getaffinity with MT FPAFF enabled
  MIPS: Malta: Don't reinitialise RTC
  MIPS: do_mcheck: Fix kernel code dump with EVA
  MIPS: show_stack: Fix stack trace with EVA
  MIPS: Export get_c0_perfcount_int()
  rtlwifi: rtl8723be: Add module parameter for MSI interrupts
  MIPS: Flush RPS on kernel entry with EVA
  usb: udc: core: add device_del() call to error pathway
  xhci: fix off by one error in TRB DMA address boundary check
  drivers/usb: Delete XHCI command timer if necessary
  staging: vt6655: vnt_bss_info_changed check conf->beacon_rate is not NULL
  dm: fix dm_merge_bvec regression on 32 bit systems
  perf: Fix fasync handling on inherited events
  drm/dp-mst: Remove debug WARN_ON
  ALSA: fireworks/firewire-lib: add support for recent firmware quirk
  mm, vmscan: Do not wait for page writeback for GFP_NOFS allocations
  MIPS: Make set_pte() SMP safe.
  ipc: modify message queue accounting to not take kernel data structures into account
  ocfs2: fix BUG in ocfs2_downconvert_thread_do_work()
  fsnotify: fix oops in fsnotify_clear_marks_by_group_flags()
  KVM: x86: Use adjustment in guest cycles when handling MSR_IA32_TSC_ADJUST
  x86/xen: build "Xen PV" APIC driver for domU as well
  cpuset: use trialcs->mems_allowed as a temp variable
  drm/dp/mst: Remove port after removing connector.
  localmodconfig: Use Kbuild files too
  dm thin metadata: delete btrees when releasing metadata snapshot
  dm btree: add ref counting ops for the leaves of top level btrees
  drm/radeon: add new OLAND pci id
  libiscsi: Fix host busy blocking during connection teardown
  libfc: Fix fc_exch_recv_req() error path
  libfc: Fix fc_fcp_cleanup_each_cmd()
  sd: Fix maximum I/O size for BLOCK_PC requests
  EDAC, ppc4xx: Access mci->csrows array elements properly
  crypto: caam - fix memory corruption in ahash_final_ctx
  drm/vmwgfx: Fix execbuf locking issues
  mm/hwpoison: fix page refcount of unknown non LRU page
  ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits
  ipc/sem.c: update/correct memory barriers
  MIPS: Fix seccomp syscall argument for MIPS64
  x86/ldt: Further fix FPU emulation
  drm/i915: Flag the execlists context object as dirty after every use
  fnic: Use the local variable instead of I/O flag to acquire io_req_lock in fnic_queuecommand() to avoid deadloack
  SCSI: Fix NULL pointer dereference in runtime PM
  ALSA: usb-audio: Fix runtime PM unbalance
  x86/xen: make CONFIG_XEN depend on CONFIG_X86_LOCAL_APIC
  Input: gpio_keys_polled - request GPIO pin as input.
  PCI: Don't use 64-bit bus addresses on PA-RISC
  ALSA: usb: Add native DSD support for Gustard DAC-X20U
  Add factory recertified Crucial M500s to blacklist
  arm64: KVM: Fix host crash when injecting a fault into a 32bit guest
  batman-adv: protect tt_local_entry from concurrent delete events
  ip6_gre: release cached dst on tunnel removal
  perf: Fix PERF_EVENT_IOC_PERIOD migration race
  net: Fix RCU splat in af_key
  bna: fix interrupts storm caused by erroneous packets
  rds: fix an integer overflow test in rds_info_getsockopt()
  fq_codel: explicitly reset flows in ->reset()
  bridge: netlink: account for the IFLA_BRPORT_PROXYARP attribute size and policy
  batman-adv: fix kernel crash due to missing NULL checks
  fbdev: select versatile helpers for the integrator
  rocker: free netdevice during netdevice removal
  udp: fix dst races with multicast early demux
  net: phy: add locking to phy_read_mmd_indirect()/phy_write_mmd_indirect()
  sparc64: Fix userspace FPU register corruptions.
  rtnetlink: verify IFLA_VF_INFO attributes before passing them to driver
  net/tipc: initialize security state for new connection socket
  net: pktgen: fix race between pktgen_thread_worker() and kthread_stop()
  net: Fix skb csum races when peeking
  ipv6: lock socket in ip6_datagram_connect()
  Revert "sit: Add gro callbacks to sit_offload"
  bonding: correct the MAC address for "follow" fail_over_mac policy
  netlink: don't hold mutex in rcu callback when releasing mmapd ring
  ext4: fix loss of delalloc extent info in ext4_zero_range()
  ACPI, PCI: Penalize legacy IRQ used by ACPI SCI
  Linux 3.19.8-ckt7

  The following patches from 3.19.8-ckt7 were already applied to the
  Vivid kernel:

  [3.19-stable only] Revert "dmaengine: pl330: Fix overflow when reporting residue in memcpy"
  ipmi/powernv: Fix minor locking bug
  net: Fix skb_set_peeked use-after-free bug

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