This bug was fixed in the package linux - 4.4.0-140.166 --------------- linux (4.4.0-140.166) xenial; urgency=medium * linux: 4.4.0-140.166 -proposed tracker (LP: #1802776) * Bypass of mount visibility through userns + mount propagation (LP: #1789161) - mount: Retest MNT_LOCKED in do_umount - mount: Don't allow copying MNT_UNBINDABLE|MNT_LOCKED mounts * kdump fail due to an IRQ storm (LP: #1797990) - SAUCE: x86/PCI: Export find_cap() to be used in early PCI code - SAUCE: x86/quirks: Add parameter to clear MSIs early on boot - SAUCE: x86/quirks: Scan all busses for early PCI quirks * crash in ENA driver on removing an interface (LP: #1802341) - SAUCE: net: ena: fix crash during ena_remove() * xenial guest on arm64 drops to busybox under openstack bionic-rocky (LP: #1797092) - [Config] CONFIG_PCI_ECAM=y - PCI: Provide common functions for ECAM mapping - PCI: generic, thunder: Use generic ECAM API - PCI, of: Move PCI I/O space management to PCI core code - PCI: Move ecam.h to linux/include/pci-ecam.h - PCI: Add parent device field to ECAM struct pci_config_window - PCI: Add pci_unmap_iospace() to unmap I/O resources - PCI/ACPI: Support I/O resources when parsing host bridge resources - [Config] CONFIG_ACPI_MCFG=y - PCI/ACPI: Add generic MCFG table handling - PCI: Refactor pci_bus_assign_domain_nr() for CONFIG_PCI_DOMAINS_GENERIC - PCI: Factor DT-specific pci_bus_find_domain_nr() code out - ARM64: PCI: Add acpi_pci_bus_find_domain_nr() - ARM64: PCI: ACPI support for legacy IRQs parsing and consolidation with DT code - ARM64: PCI: Support ACPI-based PCI host controller * [GLK/CLX] Enhanced IBRS (LP: #1786139) - x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation - x86/speculation: Support Enhanced IBRS on future CPUs * Update ENA driver to version 2.0.1K (LP: #1798182) - net: ena: remove ndo_poll_controller - net: ena: fix warning in rmmod caused by double iounmap - net: ena: fix rare bug when failed restart/resume is followed by driver removal - net: ena: fix NULL dereference due to untimely napi initialization - net: ena: fix auto casting to boolean - net: ena: minor performance improvement - net: ena: complete host info to match latest ENA spec - net: ena: introduce Low Latency Queues data structures according to ENA spec - net: ena: add functions for handling Low Latency Queues in ena_com - net: ena: add functions for handling Low Latency Queues in ena_netdev - net: ena: use CSUM_CHECKED device indication to report skb's checksum status - net: ena: explicit casting and initialization, and clearer error handling - net: ena: limit refill Rx threshold to 256 to avoid latency issues - net: ena: change rx copybreak default to reduce kernel memory pressure - net: ena: remove redundant parameter in ena_com_admin_init() - net: ena: update driver version to 2.0.1 - net: ena: fix indentations in ena_defs for better readability - net: ena: Fix Kconfig dependency on X86 - net: ena: enable Low Latency Queues - net: ena: fix compilation error in xtensa architecture * Xenial update: 4.4.162 upstream stable release (LP: #1801900) - ASoC: wm8804: Add ACPI support - ASoC: sigmadsp: safeload should not have lower byte limit - selftests/efivarfs: add required kernel configs - mfd: omap-usb-host: Fix dts probe of children - sound: enable interrupt after dma buffer initialization - stmmac: fix valid numbers of unicast filter entries - net: macb: disable scatter-gather for macb on sama5d3 - ARM: dts: at91: add new compatibility string for macb on sama5d3 - drm/amdgpu: Fix SDMA HQD destroy error on gfx_v7 - ext4: add corruption check in ext4_xattr_set_entry() - mm/vmstat.c: fix outdated vmstat_text - mach64: detect the dot clock divider correctly on sparc - perf script python: Fix export-to-postgresql.py occasional failure - i2c: i2c-scmi: fix for i2c_smbus_write_block_data - xhci: Don't print a warning when setting link state for disabled ports - jffs2: return -ERANGE when xattr buffer is too small - bnxt_en: Fix TX timeout during netpoll. - bonding: avoid possible dead-lock - ip6_tunnel: be careful when accessing the inner header - ip_tunnel: be careful when accessing the inner header - ipv4: fix use-after-free in ip_cmsg_recv_dstaddr() - net: ipv4: update fnhe_pmtu when first hop's MTU changes - net/ipv6: Display all addresses in output of /proc/net/if_inet6 - netlabel: check for IPV4MASK in addrinfo_get - net/usb: cancel pending work when unbinding smsc75xx - qlcnic: fix Tx descriptor corruption on 82xx devices - team: Forbid enslaving team device to itself - net: mvpp2: Extract the correct ethtype from the skb for tx csum offload - net: systemport: Fix wake-up interrupt race during resume - rtnl: limit IFLA_NUM_TX_QUEUES and IFLA_NUM_RX_QUEUES to 4096 - KVM: x86: remove eager_fpu field of struct kvm_vcpu_arch - x86/fpu: Remove use_eager_fpu() - x86/fpu: Remove struct fpu::counter - x86/fpu: Finish excising 'eagerfpu' - media: af9035: prevent buffer overflow on write - clocksource/drivers/ti-32k: Add CLOCK_SOURCE_SUSPEND_NONSTOP flag for non- am43 SoCs - Input: atakbd - fix Atari keymap - Input: atakbd - fix Atari CapsLock behaviour - net/mlx4: Use cpumask_available for eq->affinity_mask - powerpc/tm: Fix userspace r13 corruption - powerpc/tm: Avoid possible userspace r1 corruption on reclaim - ARC: build: Get rid of toolchain check - usb: gadget: serial: fix oops when data rx'd after close - HV: properly delay KVP packets when negotiation is in progress - Linux 4.4.162 * Xenial update: 4.4.161 upstream stable release (LP: #1801893) - mm/vmstat.c: skip NR_TLB_REMOTE_FLUSH* properly - fbdev/omapfb: fix omapfb_memory_read infoleak - x86/vdso: Fix asm constraints on vDSO syscall fallbacks - x86/vdso: Fix vDSO syscall fallback asm constraint regression - PCI: Reprogram bridge prefetch registers on resume - mac80211: fix setting IEEE80211_KEY_FLAG_RX_MGMT for AP mode keys - PM / core: Clear the direct_complete flag on errors - dm cache: fix resize crash if user doesn't reload cache table - xhci: Add missing CAS workaround for Intel Sunrise Point xHCI - USB: serial: simple: add Motorola Tetra MTP6550 id - of: unittest: Disable interrupt node tests for old world MAC systems - ext4: always verify the magic number in xattr blocks - cgroup: Fix deadlock in cpu hotplug path - ath10k: fix use-after-free in ath10k_wmi_cmd_send_nowait - ARC: clone syscall to setp r25 as thread pointer - ucma: fix a use-after-free in ucma_resolve_ip() - ubifs: Check for name being NULL while mounting - tcp: increment sk_drops for dropped rx packets - tcp: use an RB tree for ooo receive queue - tcp: fix a stale ooo_last_skb after a replace - tcp: free batches of packets in tcp_prune_ofo_queue() - tcp: call tcp_drop() from tcp_data_queue_ofo() - tcp: add tcp_ooo_try_coalesce() helper - ath10k: fix scan crash due to incorrect length calculation - ebtables: arpreply: Add the standard target sanity check - Linux 4.4.161 * mlock203 test in ubuntu_ltp_syscalls failed with Xenial kernel (LP: #1793451) - mm: mlock: avoid increase mm->locked_vm on mlock() when already mlock2(, MLOCK_ONFAULT) * execveat03 in ubuntu_ltp_syscalls failed on X/B (LP: #1786729) - cap_inode_getsecurity: use d_find_any_alias() instead of d_find_alias() * [Ubuntu] net/af_iucv: fix skb leaks for HiperTransport (LP: #1800639) - net/af_iucv: drop inbound packets with invalid flags - net/af_iucv: fix skb handling on HiperTransport xmit error * NULL pointer dereference at 0000000000000020 when access dst_orig->ops->family in function xfrm_lookup_with_ifid() (LP: #1801878) - xfrm: Fix NULL pointer dereference when skb_dst_force clears the dst_entry. * [Ubuntu] qeth: Fix potential array overrun in cmd/rc lookup (LP: #1800641) - s390: qeth_core_mpc: Use ARRAY_SIZE instead of reimplementing its function - s390: qeth: Fix potential array overrun in cmd/rc lookup * Packaging resync (LP: #1786013) - [Package] add support for specifying the primary makefile -- Khalid Elmously