This bug was fixed in the package linux - 4.15.0-29.31

---------------
linux (4.15.0-29.31) bionic; urgency=medium

  * linux: 4.15.0-29.31 -proposed tracker (LP: #1782173)

  * [SRU Bionic][Cosmic] kernel panic in ipmi_ssif at msg_done_handler
    (LP: #1777716)
    - ipmi_ssif: Fix kernel panic at msg_done_handler

  * Update to ocxl driver for 18.04.1 (LP: #1775786)
    - misc: ocxl: use put_device() instead of device_unregister()
    - powerpc: Add TIDR CPU feature for POWER9
    - powerpc: Use TIDR CPU feature to control TIDR allocation
    - powerpc: use task_pid_nr() for TID allocation
    - ocxl: Rename pnv_ocxl_spa_remove_pe to clarify it's action
    - ocxl: Expose the thread_id needed for wait on POWER9
    - ocxl: Add an IOCTL so userspace knows what OCXL features are available
    - ocxl: Document new OCXL IOCTLs
    - ocxl: Fix missing unlock on error in afu_ioctl_enable_p9_wait()

  * Critical upstream bugfix missing in Ubuntu 18.04 - frequent Xorg crash after
    suspend (LP: #1776887)
    - ocxl: Document the OCXL_IOCTL_GET_METADATA IOCTL

  * Hard LOCKUP observed on stressing Ubuntu 18 04 (LP: #1777194)
    - powerpc: use NMI IPI for smp_send_stop
    - powerpc: Fix smp_send_stop NMI IPI handling

  * IPL: ppc64_cpu --frequency hang with INFO: rcu_sched detected stalls on
    CPUs/tasks on w34 and wsbmc016 with 920.1714.20170330n (LP: #1773964)
    - rtc: opal: Fix OPAL RTC driver OPAL_BUSY loops

  * [Regression] EXT4-fs error (device sda2): ext4_validate_block_bitmap:383:
    comm stress-ng: bg 4705: bad block bitmap checksum (LP: #1781709)
    - SAUCE: Revert "UBUNTU: SAUCE: ext4: fix ext4_validate_inode_bitmap: comm
      stress-ng: Corrupt inode bitmap"
    - SAUCE: ext4: check for allocation block validity with block group locked

linux (4.15.0-28.30) bionic; urgency=medium

  * linux: 4.15.0-28.30 -proposed tracker (LP: #1781433)

  * Cannot set MTU higher than 1500 in Xen instance (LP: #1781413)
    - xen-netfront: Fix mismatched rtnl_unlock
    - xen-netfront: Update features after registering netdev

linux (4.15.0-27.29) bionic; urgency=medium

  * linux: 4.15.0-27.29 -proposed tracker (LP: #1781062)

  * [Regression] EXT4-fs error (device sda1): ext4_validate_inode_bitmap:99:
    comm stress-ng: Corrupt inode bitmap (LP: #1780137)
    - SAUCE: ext4: fix ext4_validate_inode_bitmap: comm stress-ng: Corrupt inode
      bitmap

linux (4.15.0-26.28) bionic; urgency=medium

  * linux: 4.15.0-26.28 -proposed tracker (LP: #1780112)

  * failure to boot with linux-image-4.15.0-24-generic (LP: #1779827) // Cloud-
    init causes potentially huge boot delays with 4.15 kernels (LP: #1780062)
    - random: Make getrandom() ready earlier

linux (4.15.0-25.27) bionic; urgency=medium

  * linux: 4.15.0-25.27 -proposed tracker (LP: #1779354)

  * hisi_sas_v3_hw: internal task abort: timeout and not done. (LP: #1777736)
    - scsi: hisi_sas: Update a couple of register settings for v3 hw

  * hisi_sas: Add missing PHY spinlock init (LP: #1777734)
    - scsi: hisi_sas: Add missing PHY spinlock init

  * hisi_sas: improve read performance by pre-allocating slot DMA buffers
    (LP: #1777727)
    - scsi: hisi_sas: use dma_zalloc_coherent()
    - scsi: hisi_sas: Use dmam_alloc_coherent()
    - scsi: hisi_sas: Pre-allocate slot DMA buffers

  * hisi_sas: Failures during host reset (LP: #1777696)
    - scsi: hisi_sas: Only process broadcast change in phy_bcast_v3_hw()
    - scsi: hisi_sas: Fix the conflict between dev gone and host reset
    - scsi: hisi_sas: Adjust task reject period during host reset
    - scsi: hisi_sas: Add a flag to filter PHY events during reset
    - scsi: hisi_sas: Release all remaining resources in clear nexus ha

  * Fake SAS addresses for SATA disks on HiSilicon D05 are non-unique
    (LP: #1776750)
    - scsi: hisi_sas: make SAS address of SATA disks unique

  * Vcs-Git header on bionic linux source package points to zesty git tree
    (LP: #1766055)
    - [Packaging]: Update Vcs-Git

  * large KVM instances run out of IRQ routes (LP: #1778261)
    - SAUCE: kvm -- increase KVM_MAX_IRQ_ROUTES to 2048 on x86

 -- Stefan Bader <stefan.ba...@canonical.com>  Tue, 17 Jul 2018 10:57:50
+0200

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

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https://bugs.launchpad.net/bugs/1773233

Title:
  Bionic update: upstream stable patchset 2018-05-24

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Released

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 a mainline/stable Linux tree or
         a minimally backported form of that patch. The following upstream
         stable patches should be included in the Ubuntu kernel:

         upstream stable patchset 2018-05-24 (ported from v4.14.36 and v4.16.4)
         from git://git.kernel.org/

  HID: i2c-hid: fix inverted return value from i2c_hid_command()
  device-dax: allow MAP_SYNC to succeed
  libnvdimm, dimm: handle EACCES failures from label reads
  drm/i915: Fix hibernation with ACPI S0 target state
  s390: add support for IBM z14 Model ZR1
  HID: i2c-hid: Fix resume issue on Raydium touchscreen device
  pwm: mediatek: Improve precision in rate calculation
  pwm: mediatek: Fix up PWM4 and PWM5 malfunction on MT7623
  clk: tegra: Mark HCLK, SCLK and EMC as critical
  trace_uprobe: Use %lx to display offset
  drm/amd/display: HDMI has no sound after Panel power off/on
  mmc: core: Prevent bus reference leak in mmc_blk_init()
  drivers/infiniband/ulp/srpt/ib_srpt.c: fix build with gcc-4.4.4
  drivers/infiniband/core/verbs.c: fix build with gcc-4.4.4
  IB/srpt: Fix an out-of-bounds stack access in srpt_zerolength_write()
  xprtrdma: Fix corner cases when handling device removal
  xprtrdma: Fix latency regression on NUMA NFS/RDMA clients
  RDMA/core: Avoid that ib_drain_qp() triggers an out-of-bounds stack access
  ext4: force revalidation of directory pointer after seekdir(2)
  ext4: fix offset overflow on 32-bit archs in ext4_iomap_begin()
  ceph: always update atime/mtime/ctime for new inode
  powerpc/64s: Fix pkey support in dt_cpu_ftrs, add CPU_FTR_PKEY bit
  acpi, nfit: rework NVDIMM leaf method detection
  media: rc: oops in ir_timer_keyup after device unplug
  mm: hwpoison: disable memory error handling on 1GB hugepage
  Bluetooth: hci_bcm: Add irq_polarity module option
  writeback: safer lock nesting
  media: staging: lirc_zilog: incorrect reference counting
  Revert "media: lirc_zilog: driver only sends LIRCCODE"
  mm/filemap.c: fix NULL pointer in page_cache_tree_insert()
  autofs: mount point create should honour passed in mode
  Don't leak MNT_INTERNAL away from internal mounts
  rpc_pipefs: fix double-dput()
  orangefs_kill_sb(): deal with allocation failures
  hypfs_kill_super(): deal with failed allocations
  jffs2_kill_sb(): deal with failed allocations
  drm/i915: Correctly handle limited range YCbCr data on VLV/CHV
  mmc: sdhci-pci: Only do AMD tuning for HS200
  fanotify: fix logic of events on child
  udf: Fix leak of UTF-16 surrogates into encoded strings
  powerpc/lib: Fix off-by-one in alternate feature patching
  powerpc/eeh: Fix enabling bridge MMIO windows
  MIPS: memset.S: Fix clobber of v1 in last_fixup
  MIPS: memset.S: Fix return of __clear_user from Lpartial_fixup
  MIPS: memset.S: EVA & fault support for small_memset
  MIPS: uaccess: Add micromips clobbers to bzero invocation
  HID: wacom: bluetooth: send exit report for recent Bluetooth devices
  HID: hidraw: Fix crash on HIDIOCGFEATURE with a destroyed device
  HID: input: fix battery level reporting on BT mice
  random: add new ioctl RNDRESEEDCRNG
  random: crng_reseed() should lock the crng instance that it is modifying
  random: use a different mixing algorithm for add_device_randomness()
  random: fix crng_ready() test
  ALSA: hda - New VIA controller suppor no-snoop path
  ALSA: rawmidi: Fix missing input substream checks in compat ioctls
  ALSA: line6: Use correct endpoint type for midi output
  drm/radeon: Fix PCIe lane width calculation
  drm/radeon: add PX quirk for Asus K73TK
  drm/rockchip: Clear all interrupts before requesting the IRQ
  drm/amdgpu/si: implement get/set pcie_lanes asic callback
  drm/amdgpu: Fix PCIe lane width calculation
  drm/amdgpu/sdma: fix mask in emit_pipeline_sync
  drm/amdgpu: Fix always_valid bos multiple LRU insertions.
  drm/amdgpu: Add an ATPX quirk for hybrid laptop
  ALSA: pcm: Fix endless loop for XRUN recovery in OSS emulation
  ALSA: pcm: Fix mutex unbalance in OSS emulation ioctls
  ALSA: pcm: Return -EBUSY for OSS ioctls changing busy streams
  ALSA: pcm: Avoid potential races between OSS ioctls and read/write
  ALSA: pcm: Use ERESTARTSYS instead of EINTR in OSS emulation
  watchdog: f71808e_wdt: Fix WD_EN register read
  dt-bindings: clock: mediatek: add binding for fixed-factor clock axisel_d4
  thermal: imx: Fix race condition in imx_thermal_probe()
  pwm: rcar: Fix a condition to prevent mismatch value setting to duty
  clk: bcm2835: De-assert/assert PLL reset signal when appropriate
  clk: mediatek: fix PWM clock source by adding a fixed-factor clock
  clk: fix false-positive Wmaybe-uninitialized warning
  clk: mvebu: armada-38x: add support for missing clocks
  PCI: Mark Broadcom HT1100 and HT2000 Root Port Extended Tags as broken
  mmc: tmio: Fix error handling when issuing CMD23
  mmc: jz4740: Fix race condition in IRQ mask update
  iommu/vt-d: Fix a potential memory leak
  um: Use POSIX ucontext_t instead of struct ucontext
  um: Compile with modern headers
  ring-buffer: Check if memory is available before allocation
  nfit: skip region registration for incomplete control regions
  nfit, address-range-scrub: fix scrub in-progress reporting
  libnvdimm, namespace: use a safe lookup for dimm device name
  libnvdimm, dimm: fix dpa reservation vs uninitialized label area
  tpm: self test failure should not cause suspend to fail
  cxl: Fix possible deadlock when processing page faults from cxllib
  dmaengine: at_xdmac: fix rare residue corruption
  IB/srp: Fix completion vector assignment algorithm
  IB/srp: Fix srp_abort()
  ALSA: pcm: Fix UAF at PCM release via PCM timer access
  RDMA/rxe: Fix an out-of-bounds read
  RDMA/mlx5: Protect from NULL pointer derefence
  RDMA/ucma: Don't allow setting RDMA_OPTION_IB_PATH without an RDMA device
  dm crypt: limit the number of allocated pages
  ext4: add extra checks to ext4_xattr_block_get()
  ext4: add bounds checking to ext4_xattr_find_entry()
  ext4: move call to ext4_error() into ext4_xattr_check_block()
  ext4: don't allow r/w mounts if metadata blocks overlap the superblock
  ext4: always initialize the crc32c checksum driver
  ext4: limit xattr size to INT_MAX
  ext4: protect i_disksize update by i_data_sem in direct write path
  ext4: don't update checksum of new initialized bitmaps
  ext4: pass -ESHUTDOWN code to jbd2 layer
  ext4: eliminate sleep from shutdown ioctl
  ext4: shutdown should not prevent get_write_access
  jbd2: if the journal is aborted then don't allow update of the log tail
  block: use 32-bit blk_status_t on Alpha
  extcon: intel-cht-wc: Set direction and drv flags for V5 boost GPIO
  random: use a tighter cap in credit_entropy_bits_safe()
  irqchip/gic: Take lock when updating irq type
  ASoC: topology: Fix kcontrol name string handling
  ASoC: ssm2602: Replace reg_default_raw with reg_default
  soc: mediatek: fix the mistaken pointer accessed when subdomains are added
  HID: core: Fix size as type u32
  HID: Fix hid_report_len usage
  powerpc/powernv: Fix OPAL NVRAM driver OPAL_BUSY loops
  powerpc/powernv: define a standard delay for OPAL_BUSY type retry loops
  powerpc/kexec_file: Fix error code when trying to load kdump kernel
  powerpc/kprobes: Fix call trace due to incorrect preempt count
  powerpc/64: Fix smp_wmb barrier definition use use lwsync consistently
  powerpc/64: Call H_REGISTER_PROC_TBL when running as a HPT guest on POWER9
  powerpc/64s: Fix dt_cpu_ftrs to have restore_cpu clear unwanted LPCR bits
  CIFS: fix sha512 check in cifs_crypto_secmech_release
  CIFS: add sha512 secmech
  CIFS: refactor crypto shash/sdesc allocation&free
  i2c: i801: Restore configuration at shutdown
  i2c: i801: Save register SMBSLVCMD value only once
  HID: i2c-hid: fix size check and type usage
  smb3: Fix root directory when server returns inode number of zero
  fix smb3-encryption breakage when CONFIG_DEBUG_SG=y
  cifs: fix memory leak in SMB2_open()
  usb: dwc3: gadget: never call ->complete() from ->ep_queue()
  usb: dwc3: pci: Properly cleanup resource
  usb: dwc3: prevent setting PRTCAP to OTG from debugfs
  USB:fix USB3 devices behind USB3 hubs not resuming at hibernate thaw
  USB: gadget: f_midi: fixing a possible double-free in f_midi
  ACPI / hotplug / PCI: Check presence of slot itself in get_slot_status()
  ACPI / video: Add quirk to force acpi-video backlight on Samsung 670Z5E
  regmap: Fix reversed bounds check in regmap_raw_write()
  x86/xen: Delay get_cpu_cap until stack canary is established
  media: vsp1: Fix BRx conditional path in WPF
  media: vivid: check if the cec_adapter is valid
  media: atomisp_fops.c: disable atomisp_compat_ioctl32
  spi: Fix unregistration of controller with fixed SPI bus number
  spi: Fix scatterlist elements size in spi_map_buf
  spi: atmel: init FIFOs before spi enable
  ARM: dts: at91: sama5d4: fix pinctrl compatible string
  ARM: dts: exynos: Fix IOMMU support for GScaler devices on Exynos5250
  ARM: dts: at91: at91sam9g25: fix mux-mask pinctrl property
  arm: dts: mt7623: fix USB initialization fails on bananapi-r2
  ARM: EXYNOS: Fix coupled CPU idle freeze on Exynos4210
  KVM: arm/arm64: vgic-its: Fix potential overrun in vgic_copy_lpi_list
  ARM64: dts: meson: reduce odroid-c2 eMMC maximum rate
  usb: gadget: udc: core: update usb_ep_queue() documentation
  phy: allwinner: sun4i-usb: poll vbus changes on A23/A33 when driving VBUS
  usb: musb: gadget: misplaced out of bounds check
  mm, slab: reschedule cache_reap() on the same CPU
  ipc/shm: fix use-after-free of shm file via remap_file_pages()
  resource: fix integer overflow at reallocation
  fs/reiserfs/journal.c: add missing resierfs_warning() arg
  task_struct: only use anon struct under randstruct plugin
  mm/hmm: hmm_pfns_bad() was accessing wrong struct
  mm/ksm.c: fix inconsistent accounting of zero pages
  ubi: Reject MLC NAND
  ubi: Fix error for write access
  ubi: fastmap: Don't flush fastmap work on detach
  ubifs: Check ubifs_wbuf_sync() return code
  cpufreq: CPPC: Use transition_delay_us depending transition_latency
  tty: make n_tty_read() always abort if hangup is in progress

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