This bug was fixed in the package linux - 4.4.0-78.99 --------------- linux (4.4.0-78.99) xenial; urgency=low * linux: 4.4.0-78.99 -proposed tracker (LP: #1686645) * Please backport fix to reference leak in cgroup blkio throttle (LP: #1683976) - block: fix module reference leak on put_disk() call for cgroups throttle * UbuntuKVM guest crashed while running I/O stress test with Ubuntu kernel 4.4.0-47-generic (LP: #1659111) - block: Unhash block device inodes on gendisk destruction - block: Use pointer to backing_dev_info from request_queue - block: Dynamically allocate and refcount backing_dev_info - block: Make blk_get_backing_dev_info() safe without open bdev - block: Get rid of blk_get_backing_dev_info() - block: Move bdev_unhash_inode() after invalidate_partition() - block: Unhash also block device inode for the whole device - block: Revalidate i_bdev reference in bd_aquire() - block: Initialize bd_bdi on inode initialization - block: Move bdi_unregister() to del_gendisk() - block: Allow bdi re-registration - bdi: Fix use-after-free in wb_congested_put() - block: Make del_gendisk() safer for disks without queues - block: Fix bdi assignment to bdev inode when racing with disk delete - bdi: Mark congested->bdi as internal - bdi: Make wb->bdi a proper reference - bdi: Unify bdi->wb_list handling for root wb_writeback - bdi: Shutdown writeback on all cgwbs in cgwb_bdi_destroy() - bdi: Do not wait for cgwbs release in bdi_unregister() - bdi: Rename cgwb_bdi_destroy() to cgwb_bdi_unregister() - block: Fix oops in locked_inode_to_wb_and_lock_list() - kobject: Export kobject_get_unless_zero() - block: Fix oops scsi_disk_get() * Touchpad not working correctly after kernel upgrade (LP: #1662589) - Input: ALPS - fix V8+ protocol handling (73 03 28) * Xenial update to v4.4.62 stable release (LP: #1683728) - drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3 - drm/i915: Stop using RP_DOWN_EI on Baytrail - usb: dwc3: gadget: delay unmap of bounced requests - mtd: bcm47xxpart: fix parsing first block after aligned TRX - MIPS: Introduce irq_stack - MIPS: Stack unwinding while on IRQ stack - MIPS: Only change $28 to thread_info if coming from user mode - MIPS: Switch to the irq_stack in interrupts - MIPS: Select HAVE_IRQ_EXIT_ON_IRQ_STACK - MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch - crypto: caam - fix RNG deinstantiation error checking - Linux 4.4.62 * ifup service of network device stay active after driver stop (LP: #1672144) - net: use net->count to check whether a netns is alive or not * [Hyper-V] mkfs regression in kernel 4.4+ (LP: #1682215) - block: relax check on sg gap * [Feature] KBL: intel_powerclamp driver support (LP: #1591641) - thermal/powerclamp: remove cpu whitelist - thermal/powerclamp: correct cpu support check - thermal/powerclamp: add back module device table * sysfs channel reads of lps22hb pressure sensor are stale (LP: #1682103) - iio: st_pressure: initialize lps22hb bootime * Backlight control does not work and there are no entries in /sys/class/backlight (LP: #1667323) - Revert "ACPI / video: Add force_native quirk for HP Pavilion dv6" * [Feature] KBL: intel_rapl driver support (LP: #1591640) - powercap/intel_rapl: Add support for Kabylake * Xenial update to v4.4.61 stable release (LP: #1682140) - drm/vmwgfx: Type-check lookups of fence objects - drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl() - drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl() - drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces - drm/vmwgfx: Remove getparam error message - drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() - sysfs: be careful of error returns from ops->show() - staging: android: ashmem: lseek failed due to no FMODE_LSEEK. - arm/arm64: KVM: Take mmap_sem in stage2_unmap_vm - arm/arm64: KVM: Take mmap_sem in kvm_arch_prepare_memory_region - iio: bmg160: reset chip when probing - Reset TreeId to zero on SMB2 TREE_CONNECT - ptrace: fix PTRACE_LISTEN race corrupting task->state - ring-buffer: Fix return value check in test_ringbuffer() - metag/usercopy: Drop unused macros - metag/usercopy: Fix alignment error checking - metag/usercopy: Add early abort to copy_to_user - metag/usercopy: Zero rest of buffer from copy_from_user - metag/usercopy: Set flags before ADDZ - metag/usercopy: Fix src fixup in from user rapf loops - metag/usercopy: Add missing fixups - powerpc/mm: Add missing global TLB invalidate if cxl is active - powerpc: Don't try to fix up misaligned load-with-reservation instructions - nios2: reserve boot memory for device tree - s390/decompressor: fix initrd corruption caused by bss clear - s390/uaccess: get_user() should zero on failure (again) - MIPS: Force o32 fp64 support on 32bit MIPS64r6 kernels - MIPS: ralink: Fix typos in rt3883 pinctrl - MIPS: End spinlocks with .insn - MIPS: Lantiq: fix missing xbar kernel panic - MIPS: Flush wrong invalid FTLB entry for huge page - mm/mempolicy.c: fix error handling in set_mempolicy and mbind. - Linux 4.4.61 * Xenial update to v4.4.60 stable release (LP: #1681862) - libceph: force GFP_NOIO for socket allocations - xen/setup: Don't relocate p2m over existing one - scsi: mpt3sas: fix hang on ata passthrough commands - scsi: sg: check length passed to SG_NEXT_CMD_LEN - scsi: libsas: fix ata xfer length - ALSA: seq: Fix race during FIFO resize - ALSA: hda - fix a problem for lineout on a Dell AIO machine - ASoC: atmel-classd: fix audio clock rate - ACPI: Fix incompatibility with mcount-based function graph tracing - ACPI: Do not create a platform_device for IOAPIC/IOxAPIC - tty/serial: atmel: fix race condition (TX+DMA) - tty/serial: atmel: fix TX path in atmel_console_write() - USB: fix linked-list corruption in rh_call_control() - KVM: x86: clear bus pointer when destroyed - drm/radeon: Override fpfn for all VRAM placements in radeon_evict_flags - mm, hugetlb: use pte_present() instead of pmd_present() in follow_huge_pmd() - MIPS: Lantiq: Fix cascaded IRQ setup - rtc: s35390a: fix reading out alarm - rtc: s35390a: make sure all members in the output are set - rtc: s35390a: implement reset routine as suggested by the reference - rtc: s35390a: improve irq handling - KVM: kvm_io_bus_unregister_dev() should never fail - power: reset: at91-poweroff: timely shutdown LPDDR memories - blk: improve order of bio handling in generic_make_request() - blk: Ensure users for current->bio_list can see the full list. - padata: avoid race in reordering - Linux 4.4.60 -- Thadeu Lima de Souza Cascardo