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[Launchpad Bug Tracker <1728098@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.4.0-103.126

---------------
linux (4.4.0-103.126) xenial; urgency=low

  * linux: 4.4.0-103.126 -proposed tracker (LP: #1736181)

  * CVE-2017-1000405
    - mm, thp: Do not make page table dirty unconditionally in touch_p[mu]d()

  * CVE-2017-16939
    - netlink: add a start callback for starting a netlink dump
    - ipsec: Fix aborted xfrm policy dump crash

linux (4.4.0-102.125) xenial; urgency=low

  * linux: 4.4.0-102.125 -proposed tracker (LP: #1733541)

  * tar -x sometimes fails on overlayfs (LP: #1728489)
    - ovl: check if all layers are on the same fs
    - ovl: persistent inode number for directories

  * NVMe timeout is too short (LP: #1729119)
    - nvme: update timeout module parameter type

  * Set PANIC_TIMEOUT=10 on Power Systems (LP: #1730660)
    - [Config]: Set PANIC_TIMEOUT=10 on ppc64el

  * Cannot pair BLE remote devices when using combo BT SoC (LP: #1731467)
    - Bluetooth: increase timeout for le auto connections

  * CIFS errors on 4.4.0-98, but not on 4.4.0-97 with same config (LP: #1729337)
    - SMB3: Validate negotiate request must always be signed

  * Plantronics P610 does not support sample rate reading (LP: #1719853)
    - ALSA: usb-audio: Add sample rate quirk for Plantronics P610

  * Invalid btree pointer causes the kernel NULL pointer dereference
    (LP: #1729256)
    - xfs: reinit btree pointer on attr tree inactivation walk

  * Samba mount/umount in docker container triggers kernel Oops (LP: #1729637)
    - ipv6: only call ip6_route_dev_notify() once for NETDEV_UNREGISTER
    - ipv6: fix NULL dereference in ip6_route_dev_notify()

  * [kernel] tty/hvc: Use opal irqchip interface if available (LP: #1728098)
    - tty/hvc: Use opal irqchip interface if available

  * Device hotplugging with MPT SAS cannot work for VMWare ESXi (LP: #1730852)
    - scsi: mptsas: Fixup device hotplug for VMWare ESXi

  * NMI watchdog: BUG: soft lockup on Guest upon boot (KVM) (LP: #1727331)
    - KVM: PPC: Book3S: Treat VTB as a per-subcore register, not per-thread

  * Attempt to map rbd image from ceph jewel/luminous hangs (LP: #1728739)
    - crush: ensure bucket id is valid before indexing buckets array
    - crush: ensure take bucket value is valid
    - crush: add chooseleaf_stable tunable
    - crush: decode and initialize chooseleaf_stable
    - libceph: advertise support for TUNABLES5
    - libceph: MOSDOpReply v7 encoding

  * Xenial update to 4.4.98 stable release (LP: #1732698)
    - adv7604: Initialize drive strength to default when using DT
    - video: fbdev: pmag-ba-fb: Remove bad `__init' annotation
    - PCI: mvebu: Handle changes to the bridge windows while enabled
    - xen/netback: set default upper limit of tx/rx queues to 8
    - drm: drm_minor_register(): Clean up debugfs on failure
    - KVM: PPC: Book 3S: XICS: correct the real mode ICP rejecting counter
    - iommu/arm-smmu-v3: Clear prior settings when updating STEs
    - powerpc/corenet: explicitly disable the SDHC controller on kmcoge4
    - ARM: omap2plus_defconfig: Fix probe errors on UARTs 5 and 6
    - crypto: vmx - disable preemption to enable vsx in aes_ctr.c
    - iio: trigger: free trigger resource correctly
    - phy: increase size of MII_BUS_ID_SIZE and bus_id
    - serial: sh-sci: Fix register offsets for the IRDA serial port
    - usb: hcd: initialize hcd->flags to 0 when rm hcd
    - netfilter: nft_meta: deal with PACKET_LOOPBACK in netdev family
    - IPsec: do not ignore crypto err in ah4 input
    - Input: mpr121 - handle multiple bits change of status register
    - Input: mpr121 - set missing event capability
    - IB/ipoib: Change list_del to list_del_init in the tx object
    - s390/qeth: issue STARTLAN as first IPA command
    - (config) Add NET_DSA=n
    - net: dsa: select NET_SWITCHDEV
    - platform/x86: hp-wmi: Fix detection for dock and tablet mode
    - cdc_ncm: Set NTB format again after altsetting switch for Huawei devices
    - KEYS: trusted: sanitize all key material
    - KEYS: trusted: fix writing past end of buffer in trusted_read()
    - platform/x86: hp-wmi: Fix error value for hp_wmi_tablet_state
    - platform/x86: hp-wmi: Do not shadow error values
    - x86/uaccess, sched/preempt: Verify access_ok() context
    - workqueue: Fix NULL pointer dereference
    - crypto: x86/sha1-mb - fix panic due to unaligned access
    - KEYS: fix NULL pointer dereference during ASN.1 parsing [ver #2]
    - ARM: 8720/1: ensure dump_instr() checks addr_limit
    - ALSA: seq: Fix OSS sysex delivery in OSS emulation
    - ALSA: seq: Avoid invalid lockdep class warning
    - MIPS: microMIPS: Fix incorrect mask in insn_table_MM
    - MIPS: Fix CM region target definitions
    - MIPS: SMP: Use a completion event to signal CPU up
    - MIPS: Fix race on setting and getting cpu_online_mask
    - MIPS: SMP: Fix deadlock & online race
    - test: firmware_class: report errors properly on failure
    - selftests: firmware: add empty string and async tests
    - selftests: firmware: send expected errors to /dev/null
    - tools: firmware: check for distro fallback udev cancel rule
    - MIPS: AR7: Defer registration of GPIO
    - MIPS: AR7: Ensure that serial ports are properly set up
    - Input: elan_i2c - add ELAN060C to the ACPI table
    - drm/vmwgfx: Fix Ubuntu 17.10 Wayland black screen issue
    - rbd: use GFP_NOIO for parent stat and data requests
    - can: sun4i: handle overrun in RX FIFO
    - can: c_can: don't indicate triple sampling support for D_CAN
    - x86/oprofile/ppro: Do not use __this_cpu*() in preemptible context
    - PKCS#7: fix unitialized boolean 'want'
    - Linux 4.4.98

  * ELANTECH Touchpad is not detected in 'Lenovo Ideapad 320 14AST' after fresh
    install (LP: #1727544)
    - Input: elan_i2c - add ELAN060C to the ACPI table

  * Xenial update to 4.4.97 stable release (LP: #1731915)
    - ALSA: timer: Add missing mutex lock for compat ioctls
    - ALSA: seq: Fix nested rwsem annotation for lockdep splat
    - cifs: check MaxPathNameComponentLength != 0 before using it
    - KEYS: return full count in keyring_read() if buffer is too small
    - KEYS: fix out-of-bounds read during ASN.1 parsing
    - ASoC: adau17x1: Workaround for noise bug in ADC
    - arm64: ensure __dump_instr() checks addr_limit
    - ARM: dts: mvebu: pl310-cache disable double-linefill
    - ARM: 8715/1: add a private asm/unaligned.h
    - ocfs2: fstrim: Fix start offset of first cluster group during fstrim
    - perf tools: Fix build failure on perl script context
    - drm/msm: Fix potential buffer overflow issue
    - drm/msm: fix an integer overflow test
    - tracing/samples: Fix creation and deletion of simple_thread_fn creation
    - Fix tracing sample code warning.
    - PM / wakeirq: report a wakeup_event on dedicated wekup irq
    - mmc: s3cmci: include linux/interrupt.h for tasklet_struct
    - ARM: pxa: Don't rely on public mmc header to include leds.h
    - mfd: ab8500-sysctrl: Handle probe deferral
    - mfd: axp20x: Fix axp288 PEK_DBR and PEK_DBF irqs being swapped
    - staging: rtl8712u: Fix endian settings for structs describing network
      packets
    - ext4: fix stripe-unaligned allocations
    - ext4: do not use stripe_width if it is not set
    - i2c: riic: correctly finish transfers
    - drm/amdgpu: when dpm disabled, also need to stop/start vce.
    - perf tools: Only increase index if perf_evsel__new_idx() succeeds
    - cx231xx: Fix I2C on Internal Master 3 Bus
    - xen/manage: correct return value check on xenbus_scanf()
    - scsi: aacraid: Process Error for response I/O
    - platform/x86: intel_mid_thermal: Fix module autoload
    - staging: lustre: llite: don't invoke direct_IO for the EOF case
    - staging: lustre: hsm: stack overrun in hai_dump_data_field
    - staging: lustre: ptlrpc: skip lock if export failed
    - exynos4-is: fimc-is: Unmap region obtained by of_iomap()
    - mei: return error on notification request to a disconnected client
    - s390/dasd: check for device error pointer within state change interrupts
    - bt8xx: fix memory leak
    - xen: don't print error message in case of missing Xenstore entry
    - staging: r8712u: Fix Sparse warning in rtl871x_xmit.c
    - Linux 4.4.97

  * Xenial update to 4.4.96 stable release (LP: #1731882)
    - workqueue: replace pool->manager_arb mutex with a flag
    - ALSA: hda/realtek - Add support for ALC236/ALC3204
    - ALSA: hda - fix headset mic problem for Dell machines with alc236
    - ceph: unlock dangling spinlock in try_flush_caps()
    - usb: xhci: Handle error condition in xhci_stop_device()
    - spi: uapi: spidev: add missing ioctl header
    - fuse: fix READDIRPLUS skipping an entry
    - xen/gntdev: avoid out of bounds access in case of partial gntdev_mmap()
    - Input: elan_i2c - add ELAN0611 to the ACPI table
    - Input: gtco - fix potential out-of-bound access
    - assoc_array: Fix a buggy node-splitting case
    - scsi: zfcp: fix erp_action use-before-initialize in REC action trace
    - scsi: sg: Re-fix off by one in sg_fill_request_table()
    - can: sun4i: fix loopback mode
    - can: kvaser_usb: Correct return value in printout
    - can: kvaser_usb: Ignore CMD_FLUSH_QUEUE_REPLY messages
    - regulator: fan53555: fix I2C device ids
    - x86/microcode/intel: Disable late loading on model 79
    - ecryptfs: fix dereference of NULL user_key_payload
    - Revert "drm: bridge: add DT bindings for TI ths8135"
    - Linux 4.4.96

  * Touchpad not detected - Lenovo ideapad 320-15IKB (LP: #1723736)
    - Input: elan_i2c - add ELAN0611 to the ACPI table

 -- Stefan Bader <stefan.bader@xxxxxxxxxxxxx>  Mon, 04 Dec 2017 16:50:53
+0100

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

** CVE added: https://cve.mitre.org/cgi-
bin/cvename.cgi?name=2017-1000405

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-16939

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https://bugs.launchpad.net/bugs/1728098

Title:
  [kernel] tty/hvc: Use opal irqchip interface if available

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  Fix Released

Bug description:

  == SRU Justification ==
  This bug is fixed by commit 00dab8187e18.  The commit updates the hvc
  driver to use the OPAL irqchip if made available by the running firmware.
  If it is not present, the driver falls back to the existing OPAL event number.   

  Commit 00dab8187e18 was added to mainline is v4.8-rc1, so it is not needed in 
  releases newer than Xenial.  The commit is a clean cherry pick in Xenial.

  
  == Fix ==
  commit 00dab8187e182da41122f66c207707b192509df4
  Author: Sam Mendoza-Jonas <sam@xxxxxxxxxxxxxxxx>
  Date:   Mon Jul 11 13:38:58 2016 +1000

      tty/hvc: Use opal irqchip interface if available

  
  == Regression Potential ==
  This change is specific to the hvc driver and has been in mainline since v4.8-rc1
  without any issues reported.

  == Test Case ==
  A test kernel was built with this patch and tested by the original bug reporter.
  The bug reporter states the test kernel resolved the bug.

  
  ---Problem Description---
  Please backport console irq patch .

  commit 00dab8187e182da41122f66c207707b192509df4
  Author: Sam Mendoza-Jonas <sam@xxxxxxxxxxxxxxxx>
  Date:   Mon Jul 11 13:38:58 2016 +1000

      tty/hvc: Use opal irqchip interface if available

      Update the hvc driver to use the OPAL irqchip if made available by the
      running firmware. If it is not present, the driver falls back to the
      existing OPAL event number.

      Signed-off-by: Samuel Mendoza-Jonas <sam@xxxxxxxxxxxxxxxx>
      Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>

  ---uname output---
  Linux tul217p1 4.4.0-98-generic #121-Ubuntu SMP Tue Oct 10 14:23:01 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux

  Machine Type = FSP based PowerNV system

  Canonical,

  We need this patch in 16.04 GA 4.4 kernel. This fix will avoid the
  following error:

  Oct 19 22:15:07 tul217p1 kernel: sched: RT throttling activated
  Oct 19 22:15:49 tul217p1 kernel: INFO: rcu_sched self-detected stall on CPU
  Oct 19 22:15:49 tul217p1 kernel:        21-...: (85 GPs behind) idle=d29/140000000000002/0 softirq=26316/26316 fqs=4417
  Oct 19 22:15:49 tul217p1 kernel:         (t=5250 jiffies g=30019 c=30018 q=20591)
  Oct 19 22:15:49 tul217p1 kernel: Call Trace:
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f110] [c0000000000fcbe0] sched_show_task+0xe0/0x180 (unreliable)
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f180] [c00000000013fcf4] rcu_dump_cpu_stacks+0xe4/0x150
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f1d0] [c000000000145424] rcu_check_callbacks+0x6b4/0x9b0
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f300] [c00000000014d288] update_process_times+0x58/0xa0
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f330] [c0000000001649b8] tick_sched_handle.isra.6+0x48/0xe0
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f370] [c000000000164ab4] tick_sched_timer+0x64/0xd0
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f3b0] [c00000000014dd54] __hrtimer_run_queues+0x124/0x450
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f440] [c00000000014ed7c] hrtimer_interrupt+0xec/0x2c0
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f500] [c00000000001f5fc] __timer_interrupt+0x8c/0x290
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f550] [c00000000001f9b0] timer_interrupt+0xa0/0xe0
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f580] [c0000000000099d8] restore_check_irq_replay+0x54/0x70
  Oct 19 22:15:49 tul217p1 kernel: --- interrupt: 901 at arch_local_irq_restore+0x74/0x90
                                       LR = arch_local_irq_restore+0x74/0x90
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f870] [7fffffffffffffff] 0x7fffffffffffffff (unreliable)
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f890] [c0000000000bf808] __do_softirq+0xd8/0x3e0
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f980] [c0000000000bfd88] irq_exit+0xc8/0x100
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f9a0] [c00000000001f9b4] timer_interrupt+0xa4/0xe0
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0f9d0] [c0000000000099d8] restore_check_irq_replay+0x54/0x70
  Oct 19 22:15:49 tul217p1 kernel: --- interrupt: 901 at irq_work_queue+0x60/0xd0
                                       LR = irq_work_queue+0xa4/0xd0
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0fcc0] [c0000007f4d0fd00] 0xc0000007f4d0fd00 (unreliable)
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0fcf0] [c000000000076a98] opal_handle_events+0x108/0x130
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0fd40] [c000000000070fc8] kopald+0x78/0x100
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0fd80] [c0000000000e7374] kthread+0x124/0x150
  Oct 19 22:15:49 tul217p1 kernel: [c0000007f4d0fe30] [c000000000009538] ret_from_kernel_thread+0x5c/0xa4
  Oct 19 22:15:54 tul217p1 kernel: NMI watchdog: BUG: soft lockup - CPU#21 stuck for 23s! [kopald:494]
  Oct 19 22:15:54 tul217p1 kernel: Modules linked in: ibmpowernv binfmt_misc ipmi_powernv ipmi_msghandler leds_powernv powernv_rng
  uio_pdrv_genirq uio vmx_crypto nfsd auth_rpcgss nfs_acl lockd ib_iser grace rdma_cm iw_cm sunrpc ib_cm ib_sa ib_mad ib_core ib_
  addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq a
  sync_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ipr cxl
  Oct 19 22:15:54 tul217p1 kernel: CPU: 21 PID: 494 Comm: kopald Not tainted 4.4.0-98-generic #121-Ubuntu
  Oct 19 22:15:54 tul217p1 kernel: task: c0000007f4cc3f30 ti: c0000007f4d0c000 task.ti: c0000007f4d0c000
  Oct 19 22:15:54 tul217p1 kernel: NIP: c000000000010964 LR: c000000000010964 CTR: c00000000001f100
  Oct 19 22:15:54 tul217p1 kernel: REGS: c0000007f4d0f5f0 TRAP: 0901   Not tainted  (4.4.0-98-generic)
  Oct 19 22:15:54 tul217p1 kernel: MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 28000824  XER: 20000000
  Oct 19 22:15:54 tul217p1 kernel: CFAR: c000000000009958 SOFTE: 1
                                   GPR00: c0000000000bf808 c0000007f4d0f870 c000000001608300 0000000000000900
                                   GPR04: c0000007fbd40400 0000000000000001 0000000000000018 0000000001f404db
                                   GPR08: 0000000000000000 0000000000000000 c0000007f4d0c000 0000000000000005
                                   GPR12: c00000000006e3c8 c00000000fb4c780
  Oct 19 22:15:54 tul217p1 kernel: NIP [c000000000010964] arch_local_irq_restore+0x74/0x90
  Oct 19 22:15:54 tul217p1 kernel: LR [c000000000010964] arch_local_irq_restore+0x74/0x90
  Oct 19 22:15:54 tul217p1 kernel: Call Trace:
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0f870] [7fffffffffffffff] 0x7fffffffffffffff (unreliable)
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0f890] [c0000000000bf808] __do_softirq+0xd8/0x3e0
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0f980] [c0000000000bfd88] irq_exit+0xc8/0x100
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0f9a0] [c00000000001f9b4] timer_interrupt+0xa4/0xe0
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0f9d0] [c0000000000099d8] restore_check_irq_replay+0x54/0x70
  Oct 19 22:15:54 tul217p1 kernel: --- interrupt: 901 at irq_work_queue+0x60/0xd0
                                       LR = irq_work_queue+0xa4/0xd0
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0fcc0] [c0000007f4d0fd00] 0xc0000007f4d0fd00 (unreliable)
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0fcf0] [c000000000076a98] opal_handle_events+0x108/0x130
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0fd40] [c000000000070fc8] kopald+0x78/0x100
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0fd80] [c0000000000e7374] kthread+0x124/0x150
  Oct 19 22:15:54 tul217p1 kernel: [c0000007f4d0fe30] [c000000000009538] ret_from_kernel_thread+0x5c/0xa4
  Oct 19 22:15:54 tul217p1 kernel: Instruction dump:
  Oct 19 22:15:54 tul217p1 kernel: 994d02ca 2fa30000 409e0024 e92d0020 61298000 7d210164 38210020 e8010010
  Oct 19 22:15:54 tul217p1 kernel: 7c0803a6 4e800020 60420000 4bff186d <60000000> 4bffffe4 60420000 e92d0020
  Oct 19 22:16:39 tul217p1 kernel: INFO: rcu_sched self-detected stall on CPU
  Oct 19 22:16:39 tul217p1 kernel:        16-...: (301 GPs behind) idle=5b5/140000000000002/0 softirq=2284/2284 fqs=4838
  Oct 19 22:16:39 tul217p1 kernel:         (t=5250 jiffies g=30159 c=30158 q=20605)
  Oct 19 22:16:39 tul217p1 kernel: Call Trace:
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f150] [c0000000000fcbe0] sched_show_task+0xe0/0x180 (unreliable)
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f1c0] [c00000000013fcf4] rcu_dump_cpu_stacks+0xe4/0x150
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f210] [c000000000145424] rcu_check_callbacks+0x6b4/0x9b0
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f340] [c00000000014d288] update_process_times+0x58/0xa0
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f370] [c0000000001649b8] tick_sched_handle.isra.6+0x48/0xe0
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f3b0] [c000000000164ab4] tick_sched_timer+0x64/0xd0
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f3f0] [c00000000014dd54] __hrtimer_run_queues+0x124/0x450
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f480] [c00000000014ed7c] hrtimer_interrupt+0xec/0x2c0
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f540] [c00000000001f5fc] __timer_interrupt+0x8c/0x290
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f590] [c00000000001f9b0] timer_interrupt+0xa0/0xe0
  Oct 19 22:16:39 tul217p1 kernel: [c0000007f4d0f5c0] [c0000000000099d8] restore_check_irq_replay+0x54/0x70
  Oct 19 22:16:39 tul217p1 kernel: --- interrupt: 901 at arch_local_irq_restore+0x74/0x90

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