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["Florian W." <1454699@xxxxxxxxxxxxxxxxxx>]

This kernel (3.19.7), as well as the SRU-proposed 3.19.8, is also
affected by the ext+raid0+trim "chunksize not a power of 2
patch"-regression that causes severe data loss. So I certainly don't
want this patch to land on my trusty system with -lts-vivid kernel. :)

https://lkml.org/lkml/2015/5/21/167

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https://bugs.launchpad.net/bugs/1454699

Title:
  Vivid update to 3.19.7 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 3.19.7 upstream stable
         patch set is now available. It should be included in the Ubuntu
         kernel as well.

         git://git.kernel.org/

      TEST CASE: TBD

         The following patches are in the 3.19.7 stable release:

  ip_forward: Drop frames with attached skb->sk
  net: add skb_checksum_complete_unset
  ppp: call skb_checksum_complete_unset in ppp_receive_frame
  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()
  pxa168: fix double deallocation of managed resources
  net/mlx4_en: Prevent setting invalid RSS hash function
  md: fix md io stats accounting broken
  x86/asm/decoder: Fix and enforce max instruction size in the insn decoder
  sched/idle/x86: Restore mwait_idle() to fix boot hangs, to improve power savings and to improve performance
  sched/idle/x86: Optimize unnecessary mwait_idle() resched IPIs
  perf/x86/intel: Fix Core2,Atom,NHM,WSM cycles:pp events
  KVM: x86: Fix MSR_IA32_BNDCFGS in msrs_to_save
  Btrfs: fix log tree corruption when fs mounted with -o discard
  btrfs: don't accept bare namespace as a valid xattr
  Btrfs: fix inode eviction infinite loop after cloning into it
  Btrfs: fix inode eviction infinite loop after extent_same ioctl
  usb: gadget: printer: enqueue printer's response for setup request
  KVM: s390: fix handling of write errors in the tpi handler
  KVM: s390: reinjection of irqs can fail in the tpi handler
  KVM: s390: Zero out current VMDB of STSI before including level3 data.
  KVM: s390: no need to hold the kvm->mutex for floating interrupts
  KVM: s390: fix get_all_floating_irqs
  s390/hibernate: fix save and restore of kernel text section
  KVM: use slowpath for cross page cached accesses
  KVM: arm/arm64: check IRQ number on userland injection
  KVM: arm/arm64: vgic: vgic_init returns -ENODEV when no online vcpu
  ARM: KVM: Fix size check in __coherent_cache_guest_page
  arm64: KVM: Fix stage-2 PGD allocation to have per-page refcounting
  arm64: KVM: Do not use pgd_index to index stage-2 pgd
  arm/arm64: KVM: Keep elrsr/aisr in sync with software model
  MIPS: KVM: Handle MSA Disabled exceptions from guest
  MIPS: lose_fpu(): Disable FPU when MSA enabled
  MIPS: Malta: Detect and fix bad memsize values
  MIPS: asm: asm-eva: Introduce kernel load/store variants
  MIPS: Loongson-3: Add IRQF_NO_SUSPEND to Cascade irqaction
  MIPS: Hibernate: flush TLB entries earlier
  staging: panel: fix lcd type
  staging: android: sync: Fix memory corruption in sync_timeline_signal().
  staging: vt6655: use ieee80211_tx_info to select packet type.
  md/raid0: fix bug with chunksize not a power of 2.
  drivers/base: cacheinfo: validate device node for all the caches
  cdc-wdm: fix endianness bug in debug statements
  mmc: sunxi: Use devm_reset_control_get_optional() for reset control
  spi: imx: read back the RX/TX watermark levels earlier
  spi: spidev: fix possible arithmetic overflow for multi-transfer message
  compal-laptop: Fix leaking hwmon device
  compal-laptop: Check return value of power_supply_register
  ring-buffer: Replace this_cpu_*() with __this_cpu_*()
  power_supply: twl4030_madc: Check return value of power_supply_register
  power_supply: lp8788-charger: Fix leaked power supply on probe fail
  power_supply: ipaq_micro_battery: Fix leaking workqueue
  power_supply: ipaq_micro_battery: Check return values in probe
  NFS: fix BUG() crash in notify_change() with patch to chown_common()
  ARM: fix broken hibernation
  ARM: 8320/1: fix integer overflow in ELF_ET_DYN_BASE
  ARM: mvebu: Disable CPU Idle on Armada 38x
  ARM: S3C64XX: Use fixed IRQ bases to avoid conflicts on Cragganmore
  ARM: at91/dt: sama5d3 xplained: add phy address for macb1
  ARM: dts: dove: Fix uart[23] reg property
  ARM: dts: fix mmc node updates for exynos5250-spring
  usb: musb: core: fix TX/RX endpoint order
  usb: phy: Find the right match in devm_usb_phy_match
  usb: define a generic USB_RESUME_TIMEOUT macro
  usb: musb: use new USB_RESUME_TIMEOUT
  usb: host: oxu210hp: use new USB_RESUME_TIMEOUT
  usb: host: fusbh200: use new USB_RESUME_TIMEOUT
  usb: host: uhci: use new USB_RESUME_TIMEOUT
  usb: host: fotg210: use new USB_RESUME_TIMEOUT
  usb: host: r8a66597: use new USB_RESUME_TIMEOUT
  usb: host: isp116x: use new USB_RESUME_TIMEOUT
  usb: host: xhci: use new USB_RESUME_TIMEOUT
  usb: host: ehci: use new USB_RESUME_TIMEOUT
  usb: host: sl811: use new USB_RESUME_TIMEOUT
  usb: core: hub: use new USB_RESUME_TIMEOUT
  clk: at91: usb: propagate rate modification to the parent clk
  ALSA: hda - Add dock support for ThinkPad X250 (17aa:2226)
  ALSA: emu10k1: don't deadlock in proc-functions
  ALSA: hda/realtek - Enable the ALC292 dock fixup on the Thinkpad T450
  ALSA: hda - fix "num_steps = 0" error on ALC256
  ALSA: hda/realtek - Fix Headphone Mic doesn't recording for ALC256
  Input: elantech - fix absolute mode setting on some ASUS laptops
  mfd: core: Fix platform-device name collisions
  fs/binfmt_elf.c: fix bug in loading of PIE binaries
  ptrace: fix race between ptrace_resume() and wait_task_stopped()
  NFC: st21nfcb: Retry i2c_master_send if it returns a negative value
  rtlwifi: rtl8192cu: Add new USB ID
  rtlwifi: rtl8192cu: Add new device ID
  ext4: make fsync to sync parent dir in no-journal for real this time
  mnt: Improve the umount_tree flags
  mnt: Don't propagate umounts in __detach_mounts
  perf symbols: Define STT_GNU_IFUNC for glibc 2.9 and older.
  perf tools: Fix perf-read-vdsox32 not building and lib64 install dir
  perf tools: Work around lack of sched_getcpu in glibc < 2.6.
  tools lib traceevent kbuffer: Remove extra update to data pointer in PADDING
  tools/power turbostat: Use $(CURDIR) instead of $(PWD) and add support for O= option in Makefile
  UBI: account for bitflips in both the VID header and data
  UBI: fix out of bounds write
  UBI: initialize LEB number variable
  UBI: fix check for "too many bytes"
  scsi: storvsc: Fix a bug in copy_from_bounce_buffer()
  target: Fix COMPARE_AND_WRITE with SG_TO_MEM_NOALLOC handling
  target/file: Fix BUG() when CONFIG_DEBUG_SG=y and DIF protection enabled
  target/file: Fix UNMAP with DIF protection support
  target/file: Fix SG table for prot_buf initialization
  iser-target: Fix session hang in case of an rdma read DIF error
  iser-target: Fix possible deadlock in RDMA_CM connection error
  Bluetooth: ath3k: Add support Atheros AR5B195 combo Mini PCIe card
  arm64: fix midr range for Cortex-A57 erratum 832075
  arm64: head.S: ensure visibility of page tables
  arm64: apply alternatives for !SMP kernels
  arm64: errata: add workaround for cortex-a53 erratum #845719
  powerpc/powernv: Don't map M64 segments using M32DT
  powerpc: Fix missing L2 cache size in /sys/devices/system/cpu
  powerpc/cell: Fix crash in iic_setup_cpu() after per_cpu changes
  powerpc/cell: Fix cell iommu after it_page_shift changes
  ASoC: cs4271: Increase delay time after reset
  ASoC: wm8741: Fix rates constraints values
  ASoC: davinci-evm: drop un-necessary remove function
  ASoC: pcm512x: Add 'Analogue' prefix to analogue volume controls
  ACPICA: Utilities: split IO address types from data type models.
  ACPICA: Tables: Don't release ACPI_MTX_TABLES in acpi_tb_install_standard_table().
  ACPI / scan: Annotate physical_node_lock in acpi_scan_is_offline()
  xtensa: xtfpga: fix hardware lockup caused by LCD driver
  xtensa: provide __NR_sync_file_range2 instead of __NR_sync_file_range
  xtensa: ISS: fix locking in TAP network adapter
  gpio: mvebu: Fix mask/unmask managment per irq chip type
  clk: samsung: exynos4: Disable ARMCLK down feature on Exynos4210 SoC
  clk: tegra: Register the proper number of resets
  clk: qcom: Fix i2c frequency table
  clk: qcom: fix RCG M/N counter configuration
  dm crypt: fix deadlock when async crypto algorithm returns -EBUSY
  sd: Unregister integrity profile
  sd: Fix missing ATO tag check
  Drivers: hv: vmbus: Fix a bug in the error path in vmbus_open()
  mvsas: fix panic on expander attached SATA devices
  rc: img-ir: fix error in parameters passed to irq_free()
  stk1160: Make sure current buffer is released
  IB/core: disallow registering 0-sized memory region
  IB/core: don't disallow registering region starting at 0x0
  IB/mlx4: Fix WQE LSO segment calculation
  IB/iser: Fix wrong calculation of protection buffer length
  tracing: Handle ftrace_dump() atomic context in graph_trace_open()
  tracing: Fix incorrect enabling of trace events by boot cmdline
  i2c: mux: use proper dev when removing "channel-X" symlinks
  i2c: rk3x: report number of messages transmitted
  i2c: core: Export bus recovery functions
  drm/radeon: fix doublescan modes (v2)
  drm/i915: Dont enable CS_PARSER_ERROR interrupts at all
  drm: adv7511: Fix DDC error interrupt handling
  drm: adv7511: Fix nested sleep when reading EDID
  drm/i915: vlv: fix save/restore of GFX_MAX_REQ_COUNT reg
  drm/i915: cope with large i2c transfers
  RCU pathwalk breakage when running into a symlink overmounting something
  Revert "nfs: replace nfs_add_stats with nfs_inc_stats when add one"
  nfsd4: disallow ALLOCATE with special stateids
  nfsd4: fix READ permission checking
  nfsd4: disallow SEEK with special stateids
  nfsd: eliminate NFSD_DEBUG
  NFS: Add a stub for GETDEVICELIST
  e1000: add dummy allocator to fix race condition between mtu change and netpoll
  mac80211: send AP probe as unicast again
  ebpf: verifier: check that call reg with ARG_ANYTHING is initialized
  lib: memzero_explicit: use barrier instead of OPTIMIZER_HIDE_VAR
  wl18xx: show rx_frames_per_rates as an array as it really is
  crypto: omap-aes - Fix support for unequal lengths
  C6x: time: Ensure consistency in __init
  memstick: mspro_block: add missing curly braces
  drivers: platform: parse IRQ flags from resources
  driver core: bus: Goto appropriate labels on failure in bus_add_device
  netfilter: bridge: really save frag_max_size between PRE and POST_ROUTING
  Linux 3.19.7

  The following patch from 3.19.7 was already applied in the Vivid
  kernel:

  powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH

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