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[Launchpad Bug Tracker <1730660@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.13.0-19.22

---------------
linux (4.13.0-19.22) artful; urgency=low

  * linux: 4.13.0-19.22 -proposed tracker (LP: #1736118)

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

linux (4.13.0-18.21) artful; urgency=low

  * linux: 4.13.0-18.21 -proposed tracker (LP: #1733530)

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

  * CPU call trace on AMD Raven Ridge after S3 (LP: #1732894)
    - x86/mce/AMD: Allow any CPU to initialize the smca_banks array

  * 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

  * enable CONFIG_SND_SOC_INTEL_BYT_CHT_NOCODEC_MACH easily confuse users
    (LP: #1732627)
    - [Config] CONFIG_SND_SOC_INTEL_BYT_CHT_NOCODEC_MACH=n

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

  * Allow drivers to use Relaxed Ordering on capable root ports (LP: #1721365)
    - Revert commit 1a8b6d76dc5b ("net:add one common config...")
    - net: ixgbe: Use new PCI_DEV_FLAGS_NO_RELAXED_ORDERING flag

  * support GICv3 ITS save/restore & migration (LP: #1710019)
    - KVM: arm/arm64: vgic-its: Fix return value for device table restore

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

  * Artful update to 4.13.13 stable release (LP: #1732726)
    - netfilter: nat: Revert "netfilter: nat: convert nat bysrc hash to
      rhashtable"
    - netfilter: nft_set_hash: disable fast_ops for 2-len keys
    - workqueue: Fix NULL pointer dereference
    - crypto: ccm - preserve the IV buffer
    - crypto: x86/sha1-mb - fix panic due to unaligned access
    - crypto: x86/sha256-mb - fix panic due to unaligned access
    - KEYS: fix NULL pointer dereference during ASN.1 parsing [ver #2]
    - ACPI / PM: Blacklist Low Power S0 Idle _DSM for Dell XPS13 9360
    - ARM: 8720/1: ensure dump_instr() checks addr_limit
    - ALSA: timer: Limit max instances per timer
    - ALSA: usb-audio: support new Amanero Combo384 firmware version
    - ALSA: hda - fix headset mic problem for Dell machines with alc274
    - ALSA: seq: Fix OSS sysex delivery in OSS emulation
    - ALSA: seq: Avoid invalid lockdep class warning
    - MIPS: Fix CM region target definitions
    - MIPS: BMIPS: Fix missing cbr address
    - MIPS: AR7: Defer registration of GPIO
    - MIPS: AR7: Ensure that serial ports are properly set up
    - KVM: PPC: Book3S HV: Fix exclusion between HPT resizing and other HPT
      updates
    - Input: elan_i2c - add ELAN060C to the ACPI table
    - rbd: use GFP_NOIO for parent stat and data requests
    - drm/vmwgfx: Fix Ubuntu 17.10 Wayland black screen issue
    - Revert "x86: CPU: Fix up "cpu MHz" in /proc/cpuinfo"
    - can: sun4i: handle overrun in RX FIFO
    - can: peak: Add support for new PCIe/M2 CAN FD interfaces
    - can: ifi: Fix transmitter delay calculation
    - can: c_can: don't indicate triple sampling support for D_CAN
    - x86/debug: Handle warnings before the notifier chain, to fix KGDB crash
    - x86/smpboot: Make optimization of delay calibration work correctly
    - x86/oprofile/ppro: Do not use __this_cpu*() in preemptible context
    - Linux 4.13.13

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

  * Power8 Nest PMU Instrumentation support (LP: #1481347)
    - powerpc/powernv: Add IMC OPAL APIs
    - powerpc/powernv: Detect and create IMC device
    - powerpc/perf: Add nest IMC PMU support
    - powerpc/perf: Add core IMC PMU support
    - powerpc/perf: Add thread IMC PMU support
    - powerpc/perf: Fix double unlock in imc_common_cpuhp_mem_free()
    - powerpc/perf/imc: Fix nest events on muti socket system
    - powerpc/powernv: Fix build error in opal-imc.c when NUMA=n
    - powerpc/perf: Fix usage of nest_imc_refc
    - powerpc/perf: Fix for core/nest imc call trace on cpuhotplug
    - powerpc/perf: Add ___GFP_NOWARN flag to alloc_pages_node()
    - powerpc/perf: Fix IMC initialization crash

  * Artful update to 4.13.12 stable release (LP: #1731971)
    - 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: trusted: fix writing past end of buffer in trusted_read()
    - KEYS: fix out-of-bounds read during ASN.1 parsing
    - ASoC: adau17x1: Workaround for noise bug in ADC
    - virtio_blk: Fix an SG_IO regression
    - arm64: ensure __dump_instr() checks addr_limit
    - KVM: arm64: its: Fix missing dynamic allocation check in scan_its_table
    - arm/arm64: KVM: set right LR register value for 32 bit guest when inject
      abort
    - arm/arm64: kvm: Disable branch profiling in HYP code
    - ARM: dts: mvebu: pl310-cache disable double-linefill
    - ARM: 8715/1: add a private asm/unaligned.h
    - drm/amdgpu: return -ENOENT from uvd 6.0 early init for harvesting
    - drm/amdgpu: allow harvesting check for Polaris VCE
    - userfaultfd: hugetlbfs: prevent UFFDIO_COPY to fill beyond the end of i_size
    - ocfs2: fstrim: Fix start offset of first cluster group during fstrim
    - fs/hugetlbfs/inode.c: fix hwpoison reserve accounting
    - mm, swap: fix race between swap count continuation operations
    - drm/i915: Do not rely on wm preservation for ILK watermarks
    - drm/i915/edp: read edp display control registers unconditionally
    - Revert "powerpc64/elfv1: Only dereference function descriptor for non-text
      symbols"
    - MIPS: bpf: Fix a typo in build_one_insn()
    - MIPS: smp-cmp: Use right include for task_struct
    - MIPS: microMIPS: Fix incorrect mask in insn_table_MM
    - MIPS: SMP: Fix deadlock & online race
    - Revert "x86: do not use cpufreq_quick_get() for /proc/cpuinfo "cpu MHz""
    - x86: CPU: Fix up "cpu MHz" in /proc/cpuinfo
    - powerpc/kprobes: Dereference function pointers only if the address does not
      belong to kernel text
    - futex: Fix more put_pi_state() vs. exit_pi_state_list() races
    - perf/cgroup: Fix perf cgroup hierarchy support
    - x86/mcelog: Get rid of RCU remnants
    - irqchip/irq-mvebu-gicp: Add missing spin_lock init
    - Linux 4.13.12

  * Artful update to 4.13.11 stable release (LP: #1731961)
    - workqueue: replace pool->manager_arb mutex with a flag
    - nvme-fc: fix iowait hang
    - 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()
    - Fix tracing sample code warning.
    - KVM: PPC: Fix oops when checking KVM_CAP_PPC_HTM
    - KVM: PPC: Book3S HV: POWER9 more doorbell fixes
    - KVM: PPC: Book3S: Protect kvmppc_gpa_to_ua() with SRCU
    - s390/kvm: fix detection of guest machine checks
    - nbd: handle interrupted sendmsg with a sndtimeo set
    - spi: uapi: spidev: add missing ioctl header
    - spi: a3700: Return correct value on timeout detection
    - spi: bcm-qspi: Fix use after free in bcm_qspi_probe() in error path
    - spi: armada-3700: Fix failing commands with quad-SPI
    - ovl: add NULL check in ovl_alloc_inode
    - ovl: fix EIO from lookup of non-indexed upper
    - ovl: handle ENOENT on index lookup
    - ovl: do not cleanup unsupported index entries
    - fuse: fix READDIRPLUS skipping an entry
    - xen/gntdev: avoid out of bounds access in case of partial gntdev_mmap()
    - xen: fix booting ballooned down hvm guest
    - cifs: Select all required crypto modules
    - CIFS: Fix NULL pointer deref on SMB2_tcon() failure
    - Input: elan_i2c - add ELAN0611 to the ACPI table
    - Input: gtco - fix potential out-of-bound access
    - Fix encryption labels and lengths for SMB3.1.1
    - SMB3: Validate negotiate request must always be signed
    - assoc_array: Fix a buggy node-splitting case
    - scsi: zfcp: fix erp_action use-before-initialize in REC action trace
    - scsi: aacraid: Fix controller initialization failure
    - scsi: qla2xxx: Initialize Work element before requesting IRQs
    - scsi: sg: Re-fix off by one in sg_fill_request_table()
    - x86/cpu/AMD: Apply the Erratum 688 fix when the BIOS doesn't
    - drm/amd/powerplay: fix uninitialized variable
    - drm/i915/perf: fix perf enable/disable ioctls with 32bits userspace
    - can: sun4i: fix loopback mode
    - can: kvaser_usb: Correct return value in printout
    - can: kvaser_usb: Ignore CMD_FLUSH_QUEUE_REPLY messages
    - cfg80211: fix connect/disconnect edge cases
    - ipsec: Fix aborted xfrm policy dump crash
    - regulator: fan53555: fix I2C device ids
    - powerpc/xive: Fix the size of the cpumask used in xive_find_target_in_mask()
    - Linux 4.13.11

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

  * Artful update to 4.13.10 stable release (LP: #1731951)
    - staging: bcm2835-audio: Fix memory corruption
    - USB: devio: Revert "USB: devio: Don't corrupt user memory"
    - USB: core: fix out-of-bounds access bug in usb_get_bos_descriptor()
    - USB: serial: metro-usb: add MS7820 device id
    - usb: cdc_acm: Add quirk for Elatec TWN3
    - usb: quirks: add quirk for WORLDE MINI MIDI keyboard
    - usb: hub: Allow reset retry for USB2 devices on connect bounce
    - ALSA: usb-audio: Add native DSD support for Pro-Ject Pre Box S2 Digital
    - can: gs_usb: fix busy loop if no more TX context is available
    - scsi: qla2xxx: Fix uninitialized work element
    - nbd: don't set the device size until we're connected
    - s390/cputime: fix guest/irq/softirq times after CPU hotplug
    - parisc: Fix double-word compare and exchange in LWS code on 32-bit kernels
    - parisc: Fix detection of nonsynchronous cr16 cycle counters
    - iio: dummy: events: Add missing break
    - usb: musb: sunxi: Explicitly release USB PHY on exit
    - USB: musb: fix session-bit runtime-PM quirk
    - USB: musb: fix late external abort on suspend
    - usb: musb: musb_cppi41: Fix the address of teardown and autoreq registers
    - usb: musb: musb_cppi41: Fix cppi41_set_dma_mode() for DA8xx
    - usb: musb: musb_cppi41: Configure the number of channels for DA8xx
    - usb: musb: Check for host-mode using is_host_active() on reset interrupt
    - xhci: Identify USB 3.1 capable hosts by their port protocol capability
    - xhci: Cleanup current_cmd in xhci_cleanup_command_queue()
    - usb: xhci: Reset halted endpoint if trb is noop
    - usb: xhci: Handle error condition in xhci_stop_device()
    - can: esd_usb2: Fix can_dlc value for received RTR, frames
    - can: af_can: can_pernet_init(): add missing error handling for kzalloc
      returning NULL
    - can: flexcan: fix state transition regression
    - can: flexcan: rename legacy error state quirk
    - can: flexcan: implement error passive state quirk
    - can: flexcan: fix i.MX6 state transition issue
    - can: flexcan: fix i.MX28 state transition issue
    - can: flexcan: fix p1010 state transition issue
    - KEYS: encrypted: fix dereference of NULL user_key_payload
    - mmc: sdhci-pci: Fix default d3_retune for Intel host controllers
    - drm/i915: Use bdw_ddi_translations_fdi for Broadwell
    - drm/nouveau/kms/nv50: fix oops during DP IRQ handling on non-MST boards
    - drm/nouveau/bsp/g92: disable by default
    - drm/nouveau/mmu: flush tlbs before deleting page tables
    - media: s5p-cec: add NACK detection support
    - media: cec: Respond to unregistered initiators, when applicable
    - media: dvb: i2c transfers over usb cannot be done from stack
    - tracing/samples: Fix creation and deletion of simple_thread_fn creation
    - ALSA: seq: Enable 'use' locking in all configurations
    - ALSA: hda: Remove superfluous '-' added by printk conversion
    - ALSA: hda: Abort capability probe at invalid register read
    - i2c: ismt: Separate I2C block read from SMBus block read
    - i2c: piix4: Fix SMBus port selection for AMD Family 17h chips
    - Revert "tools/power turbostat: stop migrating, unless '-m'"
    - Input: stmfts - fix setting ABS_MT_POSITION_* maximum size
    - brcmfmac: Add check for short event packets
    - brcmsmac: make some local variables 'static const' to reduce stack size
    - ARM: dts: sun6i: Fix endpoint IDs in second display pipeline
    - bus: mbus: fix window size calculation for 4GB windows
    - clockevents/drivers/cs5535: Improve resilience to spurious interrupts
    - rtlwifi: rtl8821ae: Fix connection lost problem
    - x86/microcode/intel: Disable late loading on model 79
    - lib/digsig: fix dereference of NULL user_key_payload
    - fscrypt: fix dereference of NULL user_key_payload
    - ecryptfs: fix dereference of NULL user_key_payload
    - KEYS: Fix race between updating and finding a negative key
    - FS-Cache: fix dereference of NULL user_key_payload
    - KEYS: don't let add_key() update an uninstantiated key
    - pkcs7: Prevent NULL pointer dereference, since sinfo is not always set.
    - arm64: dts: rockchip: correct vqmmc voltage for rk3399 platforms
    - ALSA: hda - Fix incorrect TLV callback check introduced during set_fs()
      removal
    - iomap_dio_rw: Allocate AIO completion queue before submitting dio
    - xfs: don't unconditionally clear the reflink flag on zero-block files
    - xfs: evict CoW fork extents when performing finsert/fcollapse
    - fs/xfs: Use %pS printk format for direct addresses
    - xfs: report zeroed or not correctly in xfs_zero_range()
    - xfs: update i_size after unwritten conversion in dio completion
    - xfs: perag initialization should only touch m_ag_max_usable for AG 0
    - xfs: Capture state of the right inode in xfs_iflush_done
    - xfs: always swap the cow forks when swapping extents
    - xfs: handle racy AIO in xfs_reflink_end_cow
    - xfs: Don't log uninitialised fields in inode structures
    - xfs: move more RT specific code under CONFIG_XFS_RT
    - xfs: don't change inode mode if ACL update fails
    - xfs: reinit btree pointer on attr tree inactivation walk
    - xfs: handle error if xfs_btree_get_bufs fails
    - xfs: cancel dirty pages on invalidation
    - xfs: trim writepage mapping to within eof
    - xfs: move two more RT specific functions into CONFIG_XFS_RT
    - Linux 4.13.10

  * Artful update to 4.13.9 stable release (LP: #1731926)
    - perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU
    - mm: page_vma_mapped: ensure pmd is loaded with READ_ONCE outside of lock
    - HID: hid-elecom: extend to fix descriptor for HUGE trackball
    - Drivers: hv: vmbus: Fix rescind handling issues
    - Drivers: hv: vmbus: Fix bugs in rescind handling
    - vmbus: simplify hv_ringbuffer_read
    - vmbus: refactor hv_signal_on_read
    - vmbus: eliminate duplicate cached index
    - vmbus: more host signalling avoidance
    - Linux 4.13.9

 -- Stefan Bader <stefan.bader@xxxxxxxxxxxxx>  Mon, 04 Dec 2017 12:27:13
+0100

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

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

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

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-12146

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

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https://bugs.launchpad.net/bugs/1730660

Title:
  Set PANIC_TIMEOUT=10 on Power Systems

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Zesty:
  Fix Released
Status in linux source package in Artful:
  Fix Released

Bug description:
  [Impact]
  When stopping CPUs fail when doing kdump, the system will hang indefinitively, instead of rebooting. With this option set, it will reboot after 10 seconds when that happens.

  This setting has been the default for trusty, where panic_timeout is
  10. Later releases set it to 0.

  [Test Case]
  When booting a kernel, /proc/sys/kernel/panic should be 10. It's 0 for xenial, zesty and artful. After the fix, it's 10.

  [Regression Potential]
  For users that rely on the setting as 0, they will see their system reboot 10 seconds after a panic. They can set it back to 0 or other value. Though, on some rare cases, the system might not boot enough for this setting to be set. Balancing that with the case where kdump is used and the system is expected to boot, we expect the 10 seconds setting is okay.

  ===

  For ppc64le, in some rare crash cases, kdump won't load unless timeout
  is greater than 0. Only 10 has been tested by IBM, so using a smaller
  value may not work.

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