This bug was fixed in the package linux - 4.15.0-15.16

linux (4.15.0-15.16) bionic; urgency=medium

  * linux: 4.15.0-15.16 -proposed tracker (LP: #1761177)

  * FFe: Enable configuring resume offset via sysfs (LP: #1760106)
    - PM / hibernate: Make passing hibernate offsets more friendly

  * /dev/bcache/by-uuid links not created after reboot (LP: #1729145)
    - SAUCE: (no-up) bcache: decouple emitting a cached_dev CHANGE uevent

  * Ubuntu18.04:POWER9:DD2.2 - Unable to start a KVM guest with default machine
    type(pseries-bionic) complaining "KVM implementation does not support
    Transactional Memory, try cap-htm=off" (kvm) (LP: #1752026)
    - powerpc: Use feature bit for RTC presence rather than timebase presence
    - powerpc: Book E: Remove unused CPU_FTR_L2CSR bit
    - powerpc: Free up CPU feature bits on 64-bit machines
    - powerpc: Add CPU feature bits for TM bug workarounds on POWER9 v2.2
    - powerpc/powernv: Provide a way to force a core into SMT4 mode
    - KVM: PPC: Book3S HV: Work around transactional memory bugs in POWER9
    - KVM: PPC: Book3S HV: Work around XER[SO] bug in fake suspend mode
    - KVM: PPC: Book3S HV: Work around TEXASR bug in fake suspend state

  * Important Kernel fixes to be backported for Power9 (kvm) (LP: #1758910)
    - powerpc/mm: Fixup tlbie vs store ordering issue on POWER9

  * Ubuntu 18.04 - IO Hang on some namespaces when running HTX with 16
    namespaces  (Bolt / NVMe) (LP: #1757497)
    - powerpc/64s: Fix lost pending interrupt due to race causing lost update to

  * fwts-efi-runtime-dkms 18.03.00-0ubuntu1: fwts-efi-runtime-dkms kernel module
    failed to build (LP: #1760876)
    - [Packaging] include the retpoline extractor in the headers

linux (4.15.0-14.15) bionic; urgency=medium

  * linux: 4.15.0-14.15 -proposed tracker (LP: #1760678)

  * [Bionic] mlx4 ETH - mlnx_qos failed when set some TC to vendor
    (LP: #1758662)
    - net/mlx4_en: Change default QoS settings

  * AT_BASE_PLATFORM in AUXV is absent on kernels available on Ubuntu 17.10
    (LP: #1759312)
    - powerpc/64s: Fix NULL AT_BASE_PLATFORM when using DT CPU features

  * Bionic update to 4.15.15 stable release (LP: #1760585)
    - net: dsa: Fix dsa_is_user_port() test inversion
    - openvswitch: meter: fix the incorrect calculation of max delta_t
    - qed: Fix MPA unalign flow in case header is split across two packets.
    - tcp: purge write queue upon aborting the connection
    - qed: Fix non TCP packets should be dropped on iWARP ll2 connection
    - sysfs: symlink: export sysfs_create_link_nowarn()
    - net: phy: relax error checking when creating sysfs link netdev->phydev
    - devlink: Remove redundant free on error path
    - macvlan: filter out unsupported feature flags
    - net: ipv6: keep sk status consistent after datagram connect failure
    - ipv6: old_dport should be a __be16 in __ip6_datagram_connect()
    - ipv6: sr: fix NULL pointer dereference when setting encap source address
    - ipv6: sr: fix scheduling in RCU when creating seg6 lwtunnel state
    - mlxsw: spectrum_buffers: Set a minimum quota for CPU port traffic
    - net: phy: Tell caller result of phy_change()
    - ipv6: Reflect MTU changes on PMTU of exceptions for MTU-less routes
    - net sched actions: return explicit error when tunnel_key mode is not
    - ppp: avoid loop in xmit recursion detection code
    - rhashtable: Fix rhlist duplicates insertion
    - test_rhashtable: add test case for rhltable with duplicate objects
    - kcm: lock lower socket in kcm_attach
    - sch_netem: fix skb leak in netem_enqueue()
    - ieee802154: 6lowpan: fix possible NULL deref in lowpan_device_event()
    - net: use skb_to_full_sk() in skb_update_prio()
    - net: Fix hlist corruptions in inet_evict_bucket()
    - s390/qeth: free netdevice when removing a card
    - s390/qeth: when thread completes, wake up all waiters
    - s390/qeth: lock read device while queueing next buffer
    - s390/qeth: on channel error, reject further cmd requests
    - soc/fsl/qbman: fix issue in qman_delete_cgr_safe()
    - dpaa_eth: fix error in dpaa_remove()
    - dpaa_eth: remove duplicate initialization
    - dpaa_eth: increment the RX dropped counter when needed
    - dpaa_eth: remove duplicate increment of the tx_errors counter
    - dccp: check sk for closed state in dccp_sendmsg()
    - ipv6: fix access to non-linear packet in ndisc_fill_redirect_hdr_option()
    - l2tp: do not accept arbitrary sockets
    - net: ethernet: arc: Fix a potential memory leak if an optional regulator 
    - net: ethernet: ti: cpsw: add check for in-band mode setting with RGMII PHY
    - net: fec: Fix unbalanced PM runtime calls
    - net/iucv: Free memory obtained by kzalloc
    - netlink: avoid a double skb free in genlmsg_mcast()
    - net: Only honor ifindex in IP_PKTINFO if non-0
    - net: systemport: Rewrite __bcm_sysport_tx_reclaim()
    - qede: Fix qedr link update
    - skbuff: Fix not waking applications when errors are enqueued
    - team: Fix double free in error path
    - Linux 4.15.15

  * Ubuntu 18.04 [ WSP DD2.2 with stop4 and stop5 enabled ]: kdump fails to
    capture dump when smt=2 or off. (LP: #1758206)
    - powerpc/crash: Remove the test for cpu_online in the IPI callback
    - powernv/kdump: Fix cases where the kdump kernel can get HMI's
    - powerpc/kdump: Fix powernv build break when KEXEC_CORE=n

  * [Intel Ubuntu 18.04 Bug] Null pointer dereference, when disconnecting RAID
    rebuild target (LP: #1759279)
    - md: document lifetime of internal rdev pointer.

  * [Feature]Crystal Ridge:add support for the platform capabilities NFIT sub-
    table in ACPI 6.2A (LP: #1730829)
    - ACPICA: ACPI 6.0A: Changes to the NFIT ACPI table
    - acpi: nfit: Add support for detect platform CPU cache flush on power loss
    - acpi: nfit: add persistent memory control flag for nd_region
    - libnvdimm: expose platform persistence attribute for nd_region
    - libnvdimm: re-enable deep flush for pmem devices via fsync()
    - libnvdimm, nfit: fix persistence domain reporting

  * Allow multiple mounts of zfs datasets (LP: #1759848)
    - SAUCE: Allow mounting datasets more than once (LP: #1759848)

  * Update Aquantia driver to fix various issues (LP: #1759303)
    - net: aquantia: Eliminate AQ_DIMOF, replace with ARRAY_SIZE
    - net: aquantia: Cleanup status flags accesses
    - net: aquantia: Cleanup hardware access modules
    - net: aquantia: Remove duplicate hardware descriptors declarations
    - net: aquantia: Add const qualifiers for hardware ops tables
    - net: aquantia: Simplify dependencies between pci modules
    - net: aquantia: Eliminate aq_nic structure abstraction
    - net: aquantia: Fix register definitions to linux style
    - net: aquantia: Prepend hw access functions declarations with prefix
    - net: aquantia: Fix internal stats calculation on rx
    - net: aquantia: Introduce new device ids and constants
    - net: aquantia: Introduce new AQC devices and capabilities
    - net: aquantia: Convert hw and caps structures to const static pointers
    - net: aquantia: Cleanup pci functions module
    - net: aquantia: Remove create/destroy from hw ops
    - net: aquantia: Change confusing no_ff_addr to more meaningful name
    - net: aquantia: Introduce firmware ops callbacks
    - net: aquantia: Introduce support for new firmware on AQC cards
    - net: aquantia: Introduce global AQC hardware reset sequence
    - net: aquantia: Report correct mediatype via ethtool
    - net: aquantia: bump driver version to match aquantia internal numbering
    - net: aquantia: Fix hardware reset when SPI may rarely hangup
    - net: aquantia: Fix a regression with reset on old firmware
    - net: aquantia: Change inefficient wait loop on fw data reads
    - net: aquantia: Add tx clean budget and valid budget handling logic
    - net: aquantia: Allow live mac address changes
    - net: aquantia: Implement pci shutdown callback
    - net: aquantia: driver version bump

  * ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3: cpu hotplug on boslcp3g4 guest
    dumping call traces continuously. (LP: #1759722)
    - blk-mq: turn WARN_ON in __blk_mq_run_hw_queue into printk

  * ISST-LTE:KVM:Ubuntu18.04:BostonLC:boslcp3:boslcp3g3:Guest conosle hangs
    after hotplug CPU add operation. (LP: #1759723)
    - genirq/affinity: assign vectors to all possible CPUs
    - blk-mq: simplify queue mapping & schedule with each possisble CPU

  * test_bpf fails (LP: #1756150)
    - test_bpf: Fix testing with CONFIG_BPF_JIT_ALWAYS_ON=y on other arches

  * Bionic update to v4.15.14 stable release (LP: #1759655)
    - MIPS: ralink: Remove ralink_halt()
    - MIPS: ralink: Fix booting on MT7621
    - MIPS: lantiq: Fix Danube USB clock
    - MIPS: lantiq: Enable AHB Bus for USB
    - MIPS: lantiq: ase: Enable MFD_SYSCON
    - iio: chemical: ccs811: Corrected firmware boot/application mode transition
    - iio: st_pressure: st_accel: pass correct platform data to init
    - iio: adc: meson-saradc: unlock on error in meson_sar_adc_lock()
    - ALSA: usb-audio: Fix parsing descriptor of UAC2 processing unit
    - ALSA: aloop: Sync stale timer before release
    - ALSA: aloop: Fix access to not-yet-ready substream via cable
    - ALSA: hda - Force polling mode on CFL for fixing codec communication
    - ALSA: hda/realtek - Fix speaker no sound after system resume
    - ALSA: hda/realtek - Fix Dell headset Mic can't record
    - ALSA: hda/realtek - Always immediately update mute LED with pin VREF
    - mmc: core: Fix tracepoint print of blk_addr and blksz
    - mmc: core: Disable HPI for certain Micron (Numonyx) eMMC cards
    - mmc: block: fix updating ext_csd caches on ioctl call
    - mmc: dw_mmc: Fix the DTO/CTO timeout overflow calculation for 32-bit 
    - mmc: dw_mmc: exynos: fix the suspend/resume issue for exynos5433
    - mmc: dw_mmc: fix falling from idmac to PIO mode when dw_mci_reset occurs
    - PCI: Add function 1 DMA alias quirk for Highpoint RocketRAID 644L
    - ahci: Add PCI-id for the Highpoint Rocketraid 644L card
    - lockdep: fix fs_reclaim warning
    - clk: bcm2835: Fix ana->maskX definitions
    - clk: bcm2835: Protect sections updating shared registers
    - clk: sunxi-ng: a31: Fix CLK_OUT_* clock ops
    - RDMA/mlx5: Fix crash while accessing garbage pointer and freed memory
    - Drivers: hv: vmbus: Fix ring buffer signaling
    - pinctrl: samsung: Validate alias coming from DT
    - Bluetooth: btusb: Remove Yoga 920 from the btusb_needs_reset_resume_table
    - Bluetooth: btusb: Add Dell OptiPlex 3060 to btusb_needs_reset_resume_table
    - Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174
    - libata: fix length validation of ATAPI-relayed SCSI commands
    - libata: remove WARN() for DMA or PIO command without data
    - libata: don't try to pass through NCQ commands to non-NCQ devices
    - libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs
    - libata: Enable queued TRIM for Samsung SSD 860
    - libata: Apply NOLPM quirk to Crucial M500 480 and 960GB SSDs
    - libata: Make Crucial BX100 500GB LPM quirk apply to all firmware versions
    - libata: Modify quirks for MX100 to limit NCQ_TRIM quirk to MU01 version
    - sched, cgroup: Don't reject lower cpu.max on ancestors
    - cgroup: fix rule checking for threaded mode switching
    - nfsd: remove blocked locks on client teardown
    - media: tegra-cec: reset rx_buf_cnt when start bit detected
    - hugetlbfs: check for pgoff value overflow
    - h8300: remove extraneous __BIG_ENDIAN definition
    - mm/vmalloc: add interfaces to free unmapped page table
    - x86/mm: implement free pmd/pte page interfaces
    - mm/khugepaged.c: convert VM_BUG_ON() to collapse fail
    - mm/thp: do not wait for lock_page() in deferred_split_scan()
    - mm/shmem: do not wait for lock_page() in shmem_unused_huge_shrink()
    - Revert "mm: page_alloc: skip over regions of invalid pfns where possible"
    - drm/vmwgfx: Fix black screen and device errors when running without fbdev
    - drm/vmwgfx: Fix a destoy-while-held mutex problem.
    - drm/radeon: Don't turn off DP sink when disconnected
    - drm/amd/display: We shouldn't set format_default on plane as atomic driver
    - drm/amd/display: Add one to EDID's audio channel count when passing to DC
    - drm: Reject getfb for multi-plane framebuffers
    - drm: udl: Properly check framebuffer mmap offsets
    - mm/vmscan: wake up flushers for legacy cgroups too
    - module: propagate error in modules_open()
    - acpi, numa: fix pxm to online numa node associations
    - ACPI / watchdog: Fix off-by-one error at resource assignment
    - libnvdimm, {btt, blk}: do integrity setup before add_disk()
    - brcmfmac: fix P2P_DEVICE ethernet address generation
    - rtlwifi: rtl8723be: Fix loss of signal
    - tracing: probeevent: Fix to support minus offset from symbol
    - mtdchar: fix usage of mtd_ooblayout_ecc()
    - mtd: nand: fsl_ifc: Fix nand waitfunc return value
    - mtd: nand: fsl_ifc: Fix eccstat array overflow for IFC ver >= 2.0.0
    - mtd: nand: fsl_ifc: Read ECCSTAT0 and ECCSTAT1 registers for IFC 2.0
    - staging: ncpfs: memory corruption in ncp_read_kernel()
    - can: peak/pcie_fd: fix echo_skb is occupied! bug
    - can: peak/pcie_fd: remove useless code when interface starts
    - can: ifi: Repair the error handling
    - can: ifi: Check core revision upon probe
    - can: cc770: Fix stalls on rt-linux, remove redundant IRQ ack
    - can: cc770: Fix queue stall & dropped RTR reply
    - can: cc770: Fix use after free in cc770_tx_interrupt()
    - tty: vt: fix up tabstops properly
    - x86/entry/64: Don't use IST entry for #BP stack
    - selftests/x86/ptrace_syscall: Fix for yet more glibc interference
    - x86/vsyscall/64: Use proper accessor to update P4D entry
    - x86/efi: Free efi_pgd with free_pages()
    - posix-timers: Protect posix clock array access against speculation
    - kvm/x86: fix icebp instruction handling
    - x86/build/64: Force the linker to use 2MB page size
    - x86/boot/64: Verify alignment of the LOAD segment
    - hwmon: (k10temp) Only apply temperature offset if result is positive
    - hwmon: (k10temp) Add temperature offset for Ryzen 1900X
    - perf/x86/intel/uncore: Fix Skylake UPI event format
    - perf stat: Fix CVS output format for non-supported counters
    - perf/core: Fix ctx_event_type in ctx_resched()
    - trace/bpf: remove helper bpf_perf_prog_read_value from tracepoint type
    - perf/x86/intel: Don't accidentally clear high bits in bdw_limit_period()
    - perf/x86/intel/uncore: Fix multi-domain PCI CHA enumeration bug on Skylake
    - iio: ABI: Fix name of timestamp sysfs file
    - iio: imu: st_lsm6dsx: fix endianness in st_lsm6dsx_read_oneshot()
    - iio: imu: st_lsm6dsx: introduce conf_lock mutex
    - staging: android: ion: Zero CMA allocated memory
    - kbuild: disable clang's default use of -fmerge-all-constants
    - bpf: skip unnecessary capability check
    - bpf, x64: increase number of passes
    - Linux 4.15.14

  * System fails to start (boot) on battery due to read-only root file-system
    (LP: #1726930) // Bionic update to v4.15.14 stable release (LP: #1759655)
    - libata: disable LPM for Crucial BX100 SSD 500GB drive

  * [Feature][CFL][ICL] [CNL]Thunderbolt support (Titan Ridge) (LP: #1730775)
    - thunderbolt: Resume control channel after hibernation image is created
    - thunderbolt: Serialize PCIe tunnel creation with PCI rescan
    - thunderbolt: Handle connecting device in place of host properly
    - thunderbolt: Do not overwrite error code when domain adding fails
    - thunderbolt: Wait a bit longer for root switch config space
    - thunderbolt: Wait a bit longer for ICM to authenticate the active NVM
    - thunderbolt: Handle rejected Thunderbolt devices
    - thunderbolt: Factor common ICM add and update operations out
    - thunderbolt: Correct function name in kernel-doc comment
    - thunderbolt: Add tb_switch_get()
    - thunderbolt: Add tb_switch_find_by_route()
    - thunderbolt: Add tb_xdomain_find_by_route()
    - thunderbolt: Add constant for approval timeout
    - thunderbolt: Move driver ready handling to struct icm
    - thunderbolt: Add 'boot' attribute for devices
    - thunderbolt: Add support for preboot ACL
    - Documentation/admin-guide: fixes for thunderbolt.rst
    - thunderbolt: Introduce USB only (SL4) security level
    - thunderbolt: Add support for Intel Titan Ridge

  * QCA9377 requires more IRAM banks for its new firmware (LP: #1748345)
    - ath10k: update the IRAM bank number for QCA9377

  * nfp: fix disabling on hw-tc-offload in flower (LP: #1752828)
    - nfp: bpf: require ETH table
    - nfp: don't advertise hw-tc-offload on non-port netdevs
    - nfp: forbid disabling hw-tc-offload on representors while offload active

  * Fix an issue that when system in S3, USB keyboard can't wake up the system.
    (LP: #1759511)
    - ACPI / PM: Allow deeper wakeup power states with no _SxD nor _SxW

  * retpoline hints: primary infrastructure and initial hints (LP: #1758856)
    - [Packaging] retpoline -- add safe usage hint support
    - [Packaging] retpoline-check -- only report additions
    - [Packaging] retpoline -- widen indirect call/jmp detection
    - [Packaging] retpoline -- elide %rip relative indirections
    - [Packaging] retpoline -- clear hint information from packages
    - SAUCE: apm -- annotate indirect calls within
    - SAUCE: EFI -- annotate indirect calls within
    - SAUCE: early/late -- annotate indirect calls in early/late initialisation
    - SAUCE: vga_set_mode -- avoid jump tables
    - [Config] retpoine -- switch to new format

  * zfs system process hung on container stop/delete (LP: #1754584)
    - SAUCE: Fix non-prefaulted page deadlock (LP: #1754584)
    - Revert "UBUNTU: SAUCE: Fix non-prefaulted page deadlock (LP: #1754584)"
    - SAUCE: Fix non-prefaulted page deadlock (LP: #1754584)

  * Important KVM fixes for ppc64el (LP: #1759045)
    - KVM: PPC: Book3S HV: Do SLB load/unload with guest LPCR value loaded
    - KVM: PPC: Book3S HV: Fix handling of secondary HPTEG in HPT resizing code
    - KVM: PPC: Book3S HV: Make HPT resizing work on POWER9
    - KVM: PPC: Book3S: Add MMIO emulation for VMX instructions
    - KVM: PPC: Book3S: Fix compile error that occurs with some gcc versions
    - KVM: PPC: Book3S HV: Fix trap number return from __kvmppc_vcore_entry
    - KVM: PPC: Book3S HV: Fix duplication of host SLB entries

  * ubuntu_zram_smoke test will cause soft lockup on Artful ThunderX ARM64
    (LP: #1755073)
    - SAUCE: crypto: thunderx_zip: Fix fallout from CONFIG_VMAP_STACK

  * Update to ocxl driver (LP: #1755161)
    - ocxl: fix signed comparison with less than zero
    - ocxl: Fix potential bad errno on irq allocation
    - ocxl: Add get_metadata IOCTL to share OCXL information to userspace

  * CAPI Flash (cxlflash) update (LP: #1752672)
    - scsi: cxlflash: Update cxl-specific arguments to generic cookie
    - scsi: cxlflash: Explicitly cache number of interrupts per context
    - scsi: cxlflash: Remove embedded CXL work structures
    - scsi: cxlflash: Adapter context init can return error
    - scsi: cxlflash: Staging to support future accelerators
    - SAUCE: cxlflash: Preserve number of interrupts for master contexts
    - SAUCE: cxlflash: Avoid clobbering context control register value
    - SAUCE: cxlflash: Add argument identifier names
    - SAUCE: cxlflash: Introduce OCXL backend
    - SAUCE: cxlflash: Hardware AFU for OCXL
    - SAUCE: cxlflash: Read host function configuration
    - SAUCE: cxlflash: Setup function acTag range
    - SAUCE: cxlflash: Read host AFU configuration
    - SAUCE: cxlflash: Setup AFU acTag range
    - SAUCE: cxlflash: Setup AFU PASID
    - SAUCE: cxlflash: Adapter context support for OCXL
    - SAUCE: cxlflash: Use IDR to manage adapter contexts
    - SAUCE: cxlflash: Support adapter file descriptors for OCXL
    - SAUCE: cxlflash: Support adapter context discovery
    - SAUCE: cxlflash: Support image reload policy modification
    - SAUCE: cxlflash: MMIO map the AFU
    - SAUCE: cxlflash: Support starting an adapter context
    - SAUCE: cxlflash: Support process specific mappings
    - SAUCE: cxlflash: Support AFU state toggling
    - SAUCE: cxlflash: Support reading adapter VPD data
    - SAUCE: cxlflash: Setup function OCXL link
    - SAUCE: cxlflash: Setup OCXL transaction layer
    - SAUCE: cxlflash: Support process element lifecycle
    - SAUCE: cxlflash: Support AFU interrupt management
    - SAUCE: cxlflash: Support AFU interrupt mapping and registration
    - SAUCE: cxlflash: Support starting user contexts
    - SAUCE: cxlflash: Support adapter context polling
    - SAUCE: cxlflash: Support adapter context reading
    - SAUCE: cxlflash: Support adapter context mmap and release
    - SAUCE: cxlflash: Support file descriptor mapping
    - SAUCE: cxlflash: Introduce object handle fop
    - SAUCE: cxlflash: Setup LISNs for user contexts
    - SAUCE: cxlflash: Setup LISNs for master contexts
    - SAUCE: cxlflash: Update synchronous interrupt status bits
    - SAUCE: cxlflash: Introduce OCXL context state machine
    - SAUCE: cxlflash: Register for translation errors
    - SAUCE: cxlflash: Support AFU reset
    - SAUCE: cxlflash: Enable OCXL operations

  * [Feature][CFL] Enable pmc_core driver for H, S, and U SKUs (LP: #1730770)
    - platform/x86: intel_pmc_core: Remove unused EXPORTED API
    - platform/x86: intel_pmc_core: Change driver to a module
    - platform/x86: intel_pmc_core: Fix file permission warnings
    - platform/x86: intel_pmc_core: Refactor debugfs entries
    - platform/x86: intel_pmc_core: Substitute PCI with CPUID enumeration
    - platform/x86: intel_pmc_core: Convert to ICPU macro
    - platform/x86: intel_pmc_core: Remove unused header file
    - ACPI / LPIT: Export lpit_read_residency_count_address()
    - platform/x86: intel_pmc_core: Read base address from LPIT
    - x86/cpu: Add Cannonlake to Intel family
    - platform/x86: intel_pmc_core: Add CannonLake PCH support
    - platform/x86: intel_pmc_core: Special case for Coffeelake

  * Cpu utilization showing system time for kvm guests (performance) (sysstat)
    (LP: #1755979)
    - KVM: PPC: Book3S HV: Fix guest time accounting with 

  * [Artful][Wyse 3040] System hang when trying to enable an offlined CPU core
    (LP: #1736393)
    - SAUCE: drm/i915:Don't set chip specific data
    - SAUCE: drm/i915: make previous commit affects Wyse 3040 only

  * [Bug] ISH support for CFL-H (LP: #1739522)
    - HID: intel-ish-hid: Enable Cannon Lake and Coffee Lake laptop/desktop

  * ath9k can't connect to wifi AP (LP: #1727228)
    - ath9k: add MSI support
    - ath9k: add a quirk to set use_msi automatically

  * [P9,Power NV][Witherspoon][Ubuntu 18.04][Perf] : PMU events by name it is
    not listed under perf list (LP: #1755470)
    - iperf vendor events: Use more flexible pattern matching for CPU
      identification for mapfile.csv

  * zed process consuming 100% cpu (LP: #1751796)
    - SAUCE: Fix ioctl loop-spin in zed (LP: #1751796)

  * Bionic update to 4.15.13 stable release (LP: #1758886)
    - scsi: megaraid_sas: Do not use 32-bit atomic request descriptor for 
    - staging: android: ashmem: Fix possible deadlock in ashmem_ioctl
    - drm/amdgpu: use polling mem to set SDMA3 wptr for VF
    - Bluetooth: hci_qca: Avoid setup failure on missing rampatch
    - Bluetooth: btqcomsmd: Fix skb double free corruption
    - cpufreq: longhaul: Revert transition_delay_us to 200 ms
    - media: c8sectpfe: fix potential NULL pointer dereference in
    - drm/msm: fix leak in failed get_pages
    - IB/ipoib: Warn when one port fails to initialize
    - RDMA/iwpm: Fix uninitialized error code in iwpm_send_mapinfo()
    - hv_netvsc: Fix the receive buffer size limit
    - hv_netvsc: Fix the TX/RX buffer default sizes
    - tcp: allow TLP in ECN CWR
    - spi: sh-msiof: Avoid writing to registers from spi_master.setup()
    - libbpf: prefer global symbols as bpf program name source
    - rtlwifi: rtl_pci: Fix the bug when inactiveps is enabled.
    - rtlwifi: always initialize variables given to RT_TRACE()
    - media: bt8xx: Fix err 'bt878_probe()'
    - ath10k: handling qos at STA side based on AP WMM enable/disable
    - media: [RESEND] media: dvb-frontends: Add delay to Si2168 restart
    - qmi_wwan: set FLAG_SEND_ZLP to avoid network initiated disconnect
    - tty: goldfish: Enable 'earlycon' only if built-in
    - serial: 8250_dw: Disable clock on error
    - cros_ec: fix nul-termination for firmware build info
    - watchdog: Fix potential kref imbalance when opening watchdog
    - watchdog: Fix kref imbalance seen if handle_boot_enabled=0
    - platform/chrome: Use proper protocol transfer function
    - dmaengine: zynqmp_dma: Fix race condition in the probe
    - drm/tilcdc: ensure nonatomic iowrite64 is not used
    - mmc: avoid removing non-removable hosts during suspend
    - mmc: block: fix logical error to avoid memory leak
    - /dev/mem: Add bounce buffer for copy-out
    - net: phy: meson-gxl: check phy_write return value
    - sfp: fix EEPROM reading in the case of non-SFF8472 SFPs
    - sfp: fix non-detection of PHY
    - media: s5p-mfc: Fix lock contention - request_firmware() once
    - rtc: ac100: Fix multiple race conditions
    - IB/ipoib: Avoid memory leak if the SA returns a different DGID
    - RDMA/cma: Use correct size when writing netlink stats
    - IB/umem: Fix use of npages/nmap fields
    - iser-target: avoid reinitializing rdma contexts for isert commands
    - bpf/cgroup: fix a verification error for a CGROUP_DEVICE type prog
    - vgacon: Set VGA struct resource types
    - omapdrm: panel: fix compatible vendor string for td028ttec1
    - mmc: sdhci-xenon: wait 5ms after set 1.8V signal enable
    - drm/omap: DMM: Check for DMM readiness after successful transaction commit
    - pty: cancel pty slave port buf's work in tty_release
    - coresight: Fix disabling of CoreSight TPIU
    - PCI: designware-ep: Fix ->get_msi() to check MSI_EN bit
    - PCI: endpoint: Fix find_first_zero_bit() usage
    - PCI: rcar: Handle rcar_pcie_parse_request_of_pci_ranges() failures
    - media: davinci: fix a debug printk
    - clk: check ops pointer on clock register
    - dt-bindings: display: panel: Fix compatible string for Toshiba 
    - clk: use round rate to bail out early in set_rate
    - pinctrl: Really force states during suspend/resume
    - pinctrl: rockchip: enable clock when reading pin direction register
    - iommu/vt-d: clean up pr_irq if request_threaded_irq fails
    - ip6_vti: adjust vti mtu according to mtu of lower device
    - ip_gre: fix error path when erspan_rcv failed
    - ip_gre: fix potential memory leak in erspan_rcv
    - soc: qcom: smsm: fix child-node lookup
    - RDMA/ocrdma: Fix permissions for OCRDMA_RESET_STATS
    - ARM: dts: aspeed-evb: Add unit name to memory node
    - nfsd4: permit layoutget of executable-only files
    - clk: at91: pmc: Wait for clocks when resuming
    - clk: Don't touch hardware when reparenting during registration
    - clk: axi-clkgen: Correctly handle nocount bit in recalc_rate()
    - clk: si5351: Rename internal plls to avoid name collisions
    - crypto: artpec6 - set correct iv size for gcm(aes)
    - hwrng: core - Clean up RNG list when last hwrng is unregistered
    - dmaengine: ti-dma-crossbar: Fix event mapping for TPCC_EVT_MUX_60_63
    - IB/mlx5: Fix integer overflows in mlx5_ib_create_srq
    - IB/mlx5: Fix out-of-bounds read in create_raw_packet_qp_rq
    - RDMA/vmw_pvrdma: Fix usage of user response structures in ABI file
    - serial: 8250_pci: Don't fail on multiport card class
    - RDMA/core: Do not use invalid destination in determining port reuse
    - clk: migrate the count of orphaned clocks at init
    - RDMA/ucma: Fix access to non-initialized CM_ID object
    - RDMA/ucma: Don't allow join attempts for unsupported AF family
    - Linux 4.15.13

  * Ubuntu18.04:PowerPC - Set Transparent Huge Pages (THP) by default to
    "always" (LP: #1753708)
    - Config: Set TRANSPARENT_HUGEPAGE_ALWAYS=y on ppc64el

  * Bionic update to 4.15.12 stable release (LP: #1757465)
    - x86/cpufeatures: Add Intel Total Memory Encryption cpufeature
    - x86/cpufeatures: Add Intel PCONFIG cpufeature
    - selftests/x86/entry_from_vm86: Exit with 1 if we fail
    - selftests/x86/entry_from_vm86: Add test cases for POPF
    - x86/vm86/32: Fix POPF emulation
    - x86/speculation, objtool: Annotate indirect calls/jumps for objtool on
      32-bit kernels
    - x86/speculation: Remove Skylake C2 from Speculation Control microcode
    - KVM: x86: Fix device passthrough when SME is active
    - x86/mm: Fix vmalloc_fault to use pXd_large
    - parisc: Handle case where flush_cache_range is called with no context
    - ALSA: pcm: Fix UAF in snd_pcm_oss_get_formats()
    - ALSA: hda - Revert power_save option default value
    - ALSA: seq: Fix possible UAF in snd_seq_check_queue()
    - ALSA: seq: Clear client entry before deleting else at closing
    - drm/nouveau/bl: Fix oops on driver unbind
    - drm/nouveau/mmu: ALIGN_DOWN correct variable
    - drm/amdgpu: fix prime teardown order
    - drm/radeon: fix prime teardown order
    - drm/amdgpu/dce: Don't turn off DP sink when disconnected
    - fs: Teach path_connected to handle nfs filesystems with multiple roots.
    - KVM: arm/arm64: Reduce verbosity of KVM init log
    - KVM: arm/arm64: Reset mapped IRQs on VM reset
    - kvm: arm/arm64: vgic-v3: Tighten synchronization for guests using v2 on v3
    - KVM: arm/arm64: vgic: Don't populate multiple LRs with the same vintid
    - lock_parent() needs to recheck if dentry got __dentry_kill'ed under it
    - fs/aio: Add explicit RCU grace period when freeing kioctx
    - fs/aio: Use RCU accessors for kioctx_table->table[]
    - RDMAVT: Fix synchronization around percpu_ref
    - irqchip/gic-v3-its: Ensure nr_ites >= nr_lpis
    - nvme: fix subsystem multiple controllers support check
    - xfs: preserve i_rdev when recycling a reclaimable inode
    - btrfs: Fix NULL pointer exception in find_bio_stripe
    - btrfs: add missing initialization in btrfs_check_shared
    - btrfs: alloc_chunk: fix DUP stripe size handling
    - btrfs: Fix use-after-free when cleaning up fs_devs with a single stale
    - btrfs: remove spurious WARN_ON(ref->count < 0) in find_parent_nodes
    - btrfs: Fix memory barriers usage with device stats counters
    - scsi: qla2xxx: Fix smatch warning in qla25xx_delete_{rsp|req}_que
    - scsi: qla2xxx: Fix NULL pointer access for fcport structure
    - scsi: qla2xxx: Fix logo flag for qlt_free_session_done()
    - scsi: qla2xxx: Fix crashes in qla2x00_probe_one on probe failure
    - usb: dwc2: fix STM32F7 USB OTG HS compatible
    - dt-bindings: usb: fix the STM32F7 DWC2 OTG HS core binding
    - USB: gadget: udc: Add missing platform_device_put() on error in
    - usb: dwc3: Fix GDBGFIFOSPACE_TYPE values
    - usb: dwc3: core: Power-off core/PHYs on system_suspend in host mode
    - usb: dwc3: of-simple: fix oops by unbalanced clk disable call
    - usb: gadget: udc: renesas_usb3: fix oops in renesas_usb3_remove()
    - phy: phy-brcm-usb: Fix two DT properties to match bindings doc
    - phy: phy-brcm-usb-init: Some Low Speed keyboards fail on 7271
    - phy: phy-brcm-usb-init: DRD mode can cause crash on startup
    - phy: phy-brcm-usb-init: Power down USB 3.0 PHY when XHCI disabled
    - Linux 4.15.12

  * cxl: Fix timebase synchronization status on POWER9 missing (CAPI)
    (LP: #1757228)
    - cxl: Fix timebase synchronization status on P9

  * [Feature][GLK] Enable L2 CDP (Code and Data Prioritization) (LP: #1737873)
    - x86/intel_rdt: Enumerate L2 Code and Data Prioritization (CDP) feature
    - x86/intel_rdt: Add command line parameter to control L2_CDP

  * [Feature] Crystal Ridge-Restrict DAX to configurations with struct page
    (LP: #1751724)
    - mm, dax: introduce pfn_t_special()
    - ext2: auto disable dax instead of failing mount
    - ext4: auto disable dax instead of failing mount
    - dax: require 'struct page' by default for filesystem dax
    - Config: Enable CONFIG_FS_DAX_LIMITED

  * Bionic update to 4.15.11 stable release (LP: #1756978)
    - x86: Treat R_X86_64_PLT32 as R_X86_64_PC32
    - ASoC: sun4i-i2s: Fix RX slot number of SUN8I
    - ASoC: sgtl5000: Fix suspend/resume
    - ASoC: wm_adsp: For TLV controls only register TLV get/set
    - ASoC: rt5651: Fix regcache sync errors on resume
    - usb: host: xhci-rcar: add support for r8a77965
    - xhci: Fix front USB ports on ASUS PRIME B350M-A
    - xhci: fix endpoint context tracer output
    - serial: sh-sci: prevent lockup on full TTY buffers
    - tty/serial: atmel: add new version check for usart
    - uas: fix comparison for error code
    - staging: comedi: fix comedi_nsamples_left.
    - staging: android: ashmem: Fix lockdep issue during llseek
    - scsi: sd_zbc: Fix potential memory leak
    - USB: storage: Add JMicron bridge 152d:2567 to unusual_devs.h
    - usbip: vudc: fix null pointer dereference on udc->lock
    - usb: quirks: add control message delay for 1b1c:1b20
    - usb: usbmon: Read text within supplied buffer size
    - usb: gadget: f_fs: Fix use-after-free in ffs_fs_kill_sb()
    - usb: dwc3: Fix lock-up on ID change during system suspend/resume
    - serial: 8250_pci: Add Brainboxes UC-260 4 port serial device
    - serial: core: mark port as initialized in autoconfig
    - earlycon: add reg-offset to physical address before mapping
    - dm mpath: fix passing integrity data
    - Revert "btrfs: use proper endianness accessors for super_copy"
    - gfs2: Clean up {lookup,fillup}_metapath
    - gfs2: Fixes to "Implement iomap for block_map" (2)
    - drm/panel: rpi-touchscreen: propagate errors in rpi_touchscreen_i2c_read()
    - spi: imx: Fix failure path leak on GPIO request error correctly
    - HID: multitouch: Only look at non touch fields in first packet of a frame
    - KVM: PPC: Book3S HV: Avoid shifts by negative amounts
    - drm/edid: set ELD connector type in drm_edid_to_eld()
    - dma-buf/fence: Fix lock inversion within dma-fence-array
    - video/hdmi: Allow "empty" HDMI infoframes
    - KVM: PPC: Book3S HV: Fix typo in kvmppc_hv_get_dirty_log_radix()
    - HID: elo: clear BTN_LEFT mapping
    - iwlwifi: mvm: rs: don't override the rate history in the search cycle
    - ARM: dts: koelsch: Move cec_clock to root node
    - clk: meson: gxbb: fix wrong clock for SARADC/SANA
    - ARM: dts: exynos: Correct Trats2 panel reset line
    - drm/amdgpu: fix get_max_engine_clock_in_mhz
    - staging: rtl8822be: fix missing null check on dev_alloc_skb return
    - typec: tcpm: fusb302: Resolve out of order messaging events
    - USB: ledtrig-usbport: fix of-node leak
    - dt-bindings: serial: Add common rs485 binding for RTS polarity
    - sched: Stop switched_to_rt() from sending IPIs to offline CPUs
    - sched: Stop resched_cpu() from sending IPIs to offline CPUs
    - crypto: chelsio - Fix an error code in chcr_hash_dma_map()
    - crypto: ecc - Fix NULL pointer deref. on no default_rng
    - crypto: keywrap - Add missing ULL suffixes for 64-bit constants
    - crypto: cavium - fix memory leak on info
    - test_firmware: fix setting old custom fw path back on exit
    - drm/vblank: Fix vblank timestamp debugs
    - net: ieee802154: adf7242: Fix bug if defined DEBUG
    - rtc: brcmstb-waketimer: fix error handling in brcmstb_waketmr_probe()
    - perf report: Fix -D output for user metadata events
    - net: xfrm: allow clearing socket xfrm policies.
    - gpiolib: don't allow OPEN_DRAIN & OPEN_SOURCE flags simultaneously
    - mtd: nand: fix interpretation of NAND_CMD_NONE in nand_command[_lp]()
    - net: thunderx: Set max queue count taking XDP_TX into account
    - ARM: dts: am335x-pepper: Fix the audio CODEC's reset pin
    - ARM: dts: omap3-n900: Fix the audio CODEC's reset pin
    - mtd: nand: ifc: update bufnum mask for ver >= 2.0.0
    - userns: Don't fail follow_automount based on s_user_ns
    - xfrm: Fix xfrm_replay_overflow_offload_esn
    - leds: pm8058: Silence pointer to integer size warning
    - bpf: fix stack state printing in verifier log
    - power: supply: sbs-message: double left shift bug in sbsm_select()
    - power: supply: ab8500_charger: Fix an error handling path
    - power: supply: ab8500_charger: Bail out in case of error in
    - drm/etnaviv: make THERMAL selectable
    - iio: adc: ina2xx: Shift bus voltage register to mask flag bits
    - iio: health: max30102: Add power enable parameter to get_temp function
    - ath10k: update tdls teardown state to target
    - cpufreq: Fix governor module removal race
    - KVM: X86: Restart the guest when insn_len is zero and SEV is enabled
    - drm/amdgpu:fix random missing of FLR NOTIFY
    - scsi: ses: don't ask for diagnostic pages repeatedly during probe
    - pwm: stmpe: Fix wrong register offset for hwpwm=2 case
    - drm/sun4i: Fix format mask in DE2 driver
    - pinctrl: sh-pfc: r8a7791: Add can_clk function
    - pinctrl: sh-pfc: r8a7795-es1: Fix MOD_SEL1 bit[25:24] to 0x3 when using
    - perf annotate: Fix unnecessary memory allocation for s390x
    - perf annotate: Fix objdump comment parsing for Intel mov dissassembly
    - iwlwifi: mvm: avoid dumping assert log when device is stopped
    - drm/amdgpu:fix virtual dce bug
    - drm/amdgpu: fix amdgpu_sync_resv v2
    - bnxt_en: Uninitialized variable in bnxt_tc_parse_actions()
    - clk: qcom: msm8916: fix mnd_width for codec_digcodec
    - mwifiex: cfg80211: do not change virtual interface during scan processing
    - ath10k: fix invalid STS_CAP_OFFSET_MASK
    - tools/usbip: fixes build with musl libc toolchain
    - spi: sun6i: disable/unprepare clocks on remove
    - bnxt_en: Don't print "Link speed -1 no longer supported" messages.
    - scsi: core: scsi_get_device_flags_keyed(): Always return device flags
    - scsi: devinfo: apply to HP XP the same flags as Hitachi VSP
    - scsi: dh: add new rdac devices
    - clk: renesas: r8a77970: Add LVDS clock
    - staging: fsl-dpaa2/eth: Fix access to FAS field
    - media: vsp1: Prevent suspending and resuming DRM pipelines
    - dm raid: fix raid set size revalidation
    - media: cpia2: Fix a couple off by one bugs
    - media: davinci: vpif_capture: add NULL check on devm_kzalloc return value
    - virtio_net: Disable interrupts if napi_complete_done rescheduled napi
    - net: sched: drop qdisc_reset from dev_graft_qdisc
    - veth: set peer GSO values
    - drm/amdkfd: Fix memory leaks in kfd topology
    - powerpc/64: Don't trace irqs-off at interrupt return to soft-disabled
    - arm64: dts: renesas: salvator-common: Add EthernetAVB PHY reset
    - agp/intel: Flush all chipset writes after updating the GGTT
    - mac80211_hwsim: enforce PS_MANUAL_POLL to be set after PS_ENABLED
    - mac80211: remove BUG() when interface type is invalid
    - crypto: caam/qi - use correct print specifier for size_t
    - ASoC: nuc900: Fix a loop timeout test
    - mmc: mmc_test: Ensure command queue is disabled for testing
    - Fix misannotated out-of-line _copy_to_user()
    - ipvlan: add L2 check for packets arriving via virtual devices
    - rcutorture/configinit: Fix build directory error message
    - locking/locktorture: Fix num reader/writer corner cases
    - ima: relax requiring a file signature for new files with zero length
    - IB/mlx5: revisit -Wmaybe-uninitialized warning
    - dmaengine: qcom_hidma: check pending interrupts
    - drm/i915/glk: Disable Guc and HuC on GLK
    - Linux 4.15.11

  * [FFE][Feature] KVM CLX avx512_vnni (LP: #1739665)
    - KVM: x86: add support for UMIP
    - KVM: Expose new cpu features to guest

  * Ubuntu18.04[P9 DD2.2 Boston]:Unable to boot power8 compat mode
    guests(ubuntu14.04.5) (kvm) (LP: #1756254)
    - KVM: PPC: Book3S HV: Allow HPT and radix on the same core for POWER9 v2.2

  * Allow hugepage backing for "p8compat" mode kvm guests (LP: #1754206)
    - KVM: PPC: Book3S HV: Fix VRMA initialization with 2MB or 1GB memory 

  * [Bug][KVM][Crystal Ridge] Terrible performance of vNVDIMM on QEMU with
    device DAX backend (LP: #1745899)
    - x86/mm: add a function to check if a pfn is UC/UC-/WC
    - KVM: MMU: consider host cache mode in MMIO page check

  * nfp: read ME frequency from vNIC ctrl memory (LP: #1752818)
    - nfp: add TLV capabilities to the BAR
    - nfp: read ME frequency from vNIC ctrl memory
    - nfp: fix TLV offset calculation

  * Miscellaneous Ubuntu changes
    - [Packaging] skip cloud tools packaging when not building package
    - [Packaging] final-checks -- remove check for empty retpoline files

 -- Seth Forshee <>  Wed, 04 Apr 2018 08:26:19

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

You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.

  ubuntu_zram_smoke test will cause soft lockup on Artful ThunderX ARM64

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

Bug description:
  == SRU Justification ==

  Enabling virtual mapped kernel stacks breaks the thunderx_zip driver.
  On compression or decompression the executing CPU hangs in an endless
  loop. The reason for this is the usage of __pa() by the driver that
  does not work for an address that is not part of the 1:1 mapping.

  == Fix ==

  The patch in comment #12 fixes it.
  To reproduce the bug (and test the new kernel), see comment #9.

  == Regression Potential ==

  The patch affects only the thunderx_zip driver (that is already in a
  completely broken state), so the regression potential is low.



  This test has passed with 4.13.0-36.40, but not 4.13.0-37.42

  The test will stuck with error message in dmesg:
  ubuntu@starmie-kernel:~$ dmesg
  [  470.227210] zram: Added device: zram0
  [  472.262544] zram0: detected capacity change from 0 to 134217728
  [  472.396960] EXT4-fs (zram0): mounted filesystem with ordered data mode. 
Opts: (null)
  [  475.761947] zram0: detected capacity change from 134217728 to 0
  [  476.796641] zram0: detected capacity change from 0 to 134217728
  [  476.909118] EXT4-fs (zram0): mounted filesystem with ordered data mode. 
Opts: (null)
  [  480.233817] zram0: detected capacity change from 134217728 to 0
  [  481.239001] zram0: detected capacity change from 0 to 134217728
  [  508.079684] watchdog: BUG: soft lockup - CPU#8 stuck for 23s! 
  [  508.086994] Modules linked in: lz4 lz4_compress zram nls_iso8859_1 
thunderx_edac i2c_thunderx thunderx_zip i2c_smbus shpchp cavium_rng_vf 
cavium_rng gpio_keys ipmi_ssif uio_pdrv_genirq uio ipmi_devintf ipmi_msghandler 
ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi 
scsi_transport_iscsi ip_tables x_tables autofs4 btrfs raid10 raid456 
async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq 
libcrc32c raid1 raid0 multipath linear nicvf nicpf ast i2c_algo_bit ttm 
drm_kms_helper syscopyarea sysfillrect aes_ce_blk sysimgblt aes_ce_cipher 
fb_sys_fops crc32_ce crct10dif_ce drm ghash_ce sha2_ce sha1_ce ahci libahci 
thunder_bgx thunder_xcv mdio_thunder thunderx_mmc mdio_cavium aes_neon_bs 
aes_neon_blk crypto_simd cryptd
  [  508.087138] CPU: 8 PID: 2253 Comm: mkfs.ext4 Not tainted 4.13.0-37-generic 
  [  508.087141] Hardware name: Cavium ThunderX CRB/To be filled by O.E.M., 
BIOS 5.11 12/12/2012
  [  508.087144] task: ffff801f57a86900 task.stack: ffff000023ec0000
  [  508.087158] PC is at zip_deflate+0x184/0x2e8 [thunderx_zip]
  [  508.087164] LR is at zip_deflate+0x17c/0x2e8 [thunderx_zip]
  [  508.087167] pc : [<ffff000001a6961c>] lr : [<ffff000001a69614>] pstate: 
  [  508.087169] sp : ffff000023ec3580
  [  508.087171] x29: ffff000023ec3580 x28: 0000000000000000
  [  508.087177] x27: ffff801f57a86900 x26: 000000010000b104
  [  508.087182] x25: ffff801f5618c000 x24: ffff801f6a15bc18
  [  508.087188] x23: 0000000000001000 x22: ffff000023ec3688
  [  508.087193] x21: ffff801f5a2d4880 x20: ffff801f6a15bc18
  [  508.087199] x19: ffff000023ec3608 x18: 0000000000000000
  [  508.087204] x17: 0000000000000001 x16: 0000000000000000
  [  508.087209] x15: 0000aaaabd4048db x14: 00000000fa130000
  [  508.087215] x13: 0000100000000000 x12: 00000000fa120000
  [  508.087220] x11: 0000000000000000 x10: 0000000000000000
  [  508.087225] x9 : 0000000000000000 x8 : 0000000000000000
  [  508.087230] x7 : 0000000000000000 x6 : ffff8000101d6080
  [  508.087236] x5 : ffff000001a69058 x4 : 0000000000000008
  [  508.087241] x3 : 0000000000000000 x2 : 0000000000000000
  [  508.087246] x1 : ffff801f6a15be08 x0 : 0000000000000000
  [  508.087252] Call trace:
  [  508.087256] Exception stack(0xffff000023ec3440 to 0xffff000023ec3580)
  [  508.087260] 3440: 0000000000000000 ffff801f6a15be08 0000000000000000 
  [  508.087264] 3460: 0000000000000008 ffff000001a69058 ffff8000101d6080 
  [  508.087268] 3480: 0000000000000000 0000000000000000 0000000000000000 
  [  508.087272] 34a0: 00000000fa120000 0000100000000000 00000000fa130000 
  [  508.087276] 34c0: 0000000000000000 0000000000000001 0000000000000000 
  [  508.087280] 34e0: ffff801f6a15bc18 ffff801f5a2d4880 ffff000023ec3688 
  [  508.087284] 3500: ffff801f6a15bc18 ffff801f5618c000 000000010000b104 
  [  508.087288] 3520: 0000000000000000 ffff000023ec3580 ffff000001a69614 
  [  508.087292] 3540: ffff000001a6961c 0000000020400145 ffff801f5a2d4880 
  [  508.087297] 3560: 0000ffffffffffff ffff801f6a15bc18 ffff000023ec3580 
  [  508.087304] [<ffff000001a6961c>] zip_deflate+0x184/0x2e8 [thunderx_zip]
  [  508.087311] [<ffff000001a68db0>] zip_compress+0xd8/0x158 [thunderx_zip]
  [  508.087317] [<ffff000001a690a0>] zip_comp_compress+0x48/0x60 [thunderx_zip]
  [  508.087325] [<ffff0000084b1280>] crypto_compress+0x50/0x68
  [  508.087336] [<ffff000001c7a298>] zcomp_compress+0x48/0x58 [zram]
  [  508.087343] [<ffff000001c7bb1c>] zram_bvec_rw.isra.18+0x21c/0x660 [zram]
  [  508.087350] [<ffff000001c7c184>] zram_make_request+0x13c/0x360 [zram]
  [  508.087356] [<ffff0000084dea94>] generic_make_request+0xf4/0x290
  [  508.087360] [<ffff0000084dec8c>] submit_bio+0x5c/0x198
  [  508.087367] [<ffff000008311944>] submit_bh_wbc+0x14c/0x1a0
  [  508.087371] [<ffff000008311bb4>] __block_write_full_page+0x21c/0x3b0
  [  508.087375] [<ffff000008311f4c>] block_write_full_page+0x10c/0x120
  [  508.087379] [<ffff0000083155e0>] blkdev_writepage+0x30/0x40
  [  508.087383] [<ffff000008237520>] __writepage+0x38/0x88
  [  508.087386] [<ffff000008237ddc>] write_cache_pages+0x1c4/0x490
  [  508.087389] [<ffff000008239a34>] generic_writepages+0x64/0xa0
  [  508.087392] [<ffff000008315550>] blkdev_writepages+0x38/0x60
  [  508.087395] [<ffff00000823a644>] do_writepages+0x5c/0x108
  [  508.087400] [<ffff000008229d9c>] __filemap_fdatawrite_range+0xec/0x128
  [  508.087404] [<ffff00000822a5a8>] file_write_and_wait_range+0x58/0xe8
  [  508.087407] [<ffff0000083147e4>] blkdev_fsync+0x3c/0x70
  [  508.087410] [<ffff00000830b77c>] vfs_fsync_range+0x64/0xc0
  [  508.087413] [<ffff00000830b860>] do_fsync+0x48/0x78
  [  508.087417] [<ffff00000830bb24>] SyS_fsync+0x24/0x38
  [  508.087419] Exception stack(0xffff000023ec3ec0 to 0xffff000023ec4000)
  [  508.087423] 3ec0: 0000000000000008 0000000000000000 0000000000001000 
  [  508.087427] 3ee0: 0000000000000000 0000aaaabd4048d4 0000000000000000 
  [  508.087431] 3f00: 0000000000000052 00000000000003f8 0000000000000400 
  [  508.087435] 3f20: 0000000000000c00 0000000000001000 0000000000001c00 
  [  508.087439] 3f40: 0000ffffa72c4c98 0000ffffa714fb58 0000000000000000 
  [  508.087443] 3f60: 0000aaaabd4001d0 0000000000000000 0000000000000000 
  [  508.087447] 3f80: 0000ffffecf836c0 0000aaaabd4044e0 0000aaaabd403f70 
  [  508.087451] 3fa0: 0000aaaabd403f70 0000ffffecf834b0 0000ffffa72aa0a4 
  [  508.087455] 3fc0: 0000ffffa714fb7c 0000000060000000 0000000000000008 
  [  508.087458] 3fe0: 0000000000000000 0000000000000000 0000000000000000 
  [  508.087463] [<ffff000008083c00>] el0_svc_naked+0x34/0x38
  [  528.074307] watchdog: BUG: soft lockup - CPU#2 stuck for 22s! 
  [  528.081877] Modules linked in: lz4 lz4_compress zram nls_iso8859_1 
thunderx_edac i2c_thunderx thunderx_zip i2c_smbus shpchp cavium_rng_vf 
cavium_rng gpio_keys ipmi_ssif uio_pdrv_genirq uio ipmi_devintf ipmi_msghandler 
ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi 
scsi_transport_iscsi ip_tables x_tables autofs4 btrfs raid10 raid456 
async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq 
libcrc32c raid1 raid0 multipath linear nicvf nicpf ast i2c_algo_bit ttm 
drm_kms_helper syscopyarea sysfillrect aes_ce_blk sysimgblt aes_ce_cipher 
fb_sys_fops crc32_ce crct10dif_ce drm ghash_ce sha2_ce sha1_ce ahci libahci 
thunder_bgx thunder_xcv mdio_thunder thunderx_mmc mdio_cavium aes_neon_bs 
aes_neon_blk crypto_simd cryptd
  [  528.082019] CPU: 2 PID: 512 Comm: kworker/u96:3 Tainted: G             L  
4.13.0-37-generic #42-Ubuntu
  [  528.082021] Hardware name: Cavium ThunderX CRB/To be filled by O.E.M., 
BIOS 5.11 12/12/2012
  [  528.082033] Workqueue: writeback wb_workfn (flush-252:0)
  [  528.082039] task: ffff801f27b58000 task.stack: ffff000013b00000
  [  528.082052] PC is at zip_deflate+0x180/0x2e8 [thunderx_zip]
  [  528.082059] LR is at zip_deflate+0x17c/0x2e8 [thunderx_zip]
  [  528.082062] pc : [<ffff000001a69618>] lr : [<ffff000001a69614>] pstate: 
  [  528.082064] sp : ffff000013b03330
  [  528.082066] x29: ffff000013b03330 x28: 0000000000000000
  [  528.082071] x27: ffff801f27b58000 x26: 000000010000c700
  [  528.082077] x25: ffff801f57e04000 x24: ffff801f6a15bc18
  [  528.082082] x23: 0000000000001000 x22: ffff000013b03438
  [  528.082087] x21: ffff801f5a2d5880 x20: ffff801f6a15bc18
  [  528.082093] x19: ffff000013b033b8 x18: 0000000000000009
  [  528.082098] x17: 0000000000000002 x16: 0000000000000000
  [  528.082103] x15: 0000000000000001 x14: 0000000000db0000
  [  528.082108] x13: 0000100000000000 x12: 0000000000da0000
  [  528.082113] x11: 0000000000000000 x10: 0000000000000000
  [  528.082119] x9 : 0000000000000000 x8 : 0000000000000000
  [  528.082124] x7 : 0000000000000000 x6 : ffff8000101d6100
  [  528.082129] x5 : ffff000001a69058 x4 : 0000000000000008
  [  528.082134] x3 : 0000000000000000 x2 : 0000000000000000
  [  528.082139] x1 : ffff801f6a15be08 x0 : 0000000000000000
  [  528.082145] Call trace:
  [  528.082149] Exception stack(0xffff000013b031f0 to 0xffff000013b03330)
  [  528.082152] 31e0:                                   0000000000000000 
  [  528.082156] 3200: 0000000000000000 0000000000000000 0000000000000008 
  [  528.082160] 3220: ffff8000101d6100 0000000000000000 0000000000000000 
  [  528.082164] 3240: 0000000000000000 0000000000000000 0000000000da0000 
  [  528.082167] 3260: 0000000000db0000 0000000000000001 0000000000000000 
  [  528.082171] 3280: 0000000000000009 ffff000013b033b8 ffff801f6a15bc18 
  [  528.082175] 32a0: ffff000013b03438 0000000000001000 ffff801f6a15bc18 
  [  528.082179] 32c0: 000000010000c700 ffff801f27b58000 0000000000000000 
  [  528.082183] 32e0: ffff000001a69614 ffff000013b03330 ffff000001a69618 
  [  528.082187] 3300: ffff801f5a2d5880 ffff000013b03438 ffffffffffffffff 
  [  528.082190] 3320: ffff000013b03330 ffff000001a69618
  [  528.082197] [<ffff000001a69618>] zip_deflate+0x180/0x2e8 [thunderx_zip]
  [  528.082204] [<ffff000001a68db0>] zip_compress+0xd8/0x158 [thunderx_zip]
  [  528.082210] [<ffff000001a690a0>] zip_comp_compress+0x48/0x60 [thunderx_zip]
  [  528.082216] [<ffff0000084b1280>] crypto_compress+0x50/0x68
  [  528.082228] [<ffff000001c7a298>] zcomp_compress+0x48/0x58 [zram]
  [  528.082236] [<ffff000001c7bb1c>] zram_bvec_rw.isra.18+0x21c/0x660 [zram]
  [  528.082242] [<ffff000001c7c184>] zram_make_request+0x13c/0x360 [zram]
  [  528.082248] [<ffff0000084dea94>] generic_make_request+0xf4/0x290
  [  528.082252] [<ffff0000084dec8c>] submit_bio+0x5c/0x198
  [  528.082258] [<ffff000008311944>] submit_bh_wbc+0x14c/0x1a0
  [  528.082262] [<ffff000008311bb4>] __block_write_full_page+0x21c/0x3b0
  [  528.082266] [<ffff000008311f4c>] block_write_full_page+0x10c/0x120
  [  528.082270] [<ffff0000083155e0>] blkdev_writepage+0x30/0x40
  [  528.082274] [<ffff000008237520>] __writepage+0x38/0x88
  [  528.082277] [<ffff000008237ddc>] write_cache_pages+0x1c4/0x490
  [  528.082280] [<ffff000008239a34>] generic_writepages+0x64/0xa0
  [  528.082283] [<ffff000008315550>] blkdev_writepages+0x38/0x60
  [  528.082286] [<ffff00000823a644>] do_writepages+0x5c/0x108
  [  528.082290] [<ffff000008305938>] __writeback_single_inode+0x48/0x3f0
  [  528.082293] [<ffff000008306158>] writeback_sb_inodes+0x1c0/0x460
  [  528.082296] [<ffff000008306470>] __writeback_inodes_wb+0x78/0xc8
  [  528.082299] [<ffff0000083067bc>] wb_writeback+0x224/0x350
  [  528.082302] [<ffff000008307254>] wb_workfn+0x1c4/0x400
  [  528.082308] [<ffff0000080fe5e8>] process_one_work+0x1e0/0x420
  [  528.082312] [<ffff0000080fe874>] worker_thread+0x4c/0x478
  [  528.082316] [<ffff000008105848>] kthread+0x138/0x140
  [  528.082321] [<ffff0000080854f0>] ret_from_fork+0x10/0x18

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: linux-image-4.13.0-37-generic 4.13.0-37.42
  ProcVersionSignature: User Name 4.13.0-37.42-generic 4.13.13
  Uname: Linux 4.13.0-37-generic aarch64
   total 0
   crw-rw---- 1 root audio 116,  1 Mar 12 03:13 seq
   crw-rw---- 1 root audio 116, 33 Mar 12 03:13 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: arm64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  Date: Mon Mar 12 03:22:24 2018
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  MachineType: Cavium ThunderX CRB

   PATH=(custom, no user)
   0 EFI VGA
   1 astdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-37-generic 
root=UUID=c5160401-c147-4329-9683-b946ce7d0d37 ro
   linux-restricted-modules-4.13.0-37-generic N/A
   linux-backports-modules-4.13.0-37-generic  N/A
   linux-firmware                             1.169.3
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install) 12/12/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 5.11
  dmi.board.asset.tag: To be filled by O.E.M. To be filled by O.E.M.
  dmi.board.vendor: To be filled by O.E.M.
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.asset.tag: To be filled by O.E.M.
  dmi.chassis.type: 0
  dmi.chassis.vendor: Cavium
  dmi.chassis.version: To be filled by O.E.M.
dmi:bvnAmericanMegatrendsInc.:bvr5.11:bd12/12/2012:svnCavium:pnThunderXCRB:pvrTobefilledbyO.E.M.:rvnTobefilledbyO.E.M.:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.:cvnCavium:ct0:cvrTobefilledbyO.E.M.: Default string ThunderX CRB
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Cavium

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