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[Launchpad Bug Tracker <1516682@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux-lts-utopic -
3.16.0-55.74~14.04.1

---------------
linux-lts-utopic (3.16.0-55.74~14.04.1) trusty; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1516943

  [ Upstream Kernel Changes ]

  * arm64: errata: use KBUILD_CFLAGS_MODULE for erratum #843419
    - LP: #1516682

linux-lts-utopic (3.16.0-54.73~14.04.1) trusty; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1514914
  * [Config] updateconfigs after 3.16.7-ckt19 stable update

  [ Upstream Kernel Changes ]

  * Revert "ARM: orion5x: fix legacy orion5x IRQ numbers"
    - LP: #1514911
  * x86/hyperv: Mark the Hyper-V TSC as unstable
    - LP: #1498206
  * ARM: 8429/1: disable GCC SRA optimization
    - LP: #1514911
  * CIFS: fix type confusion in copy offload ioctl
    - LP: #1514911
  * hwmon: (nct6775) Swap STEP_UP_TIME and STEP_DOWN_TIME registers for
    most chips
    - LP: #1514911
  * x86/apic: Serialize LVTT and TSC_DEADLINE writes
    - LP: #1514911
  * arm64: head.S: initialise mdcr_el2 in el2_setup
    - LP: #1514911
  * kvm: don't try to register to KVM_FAST_MMIO_BUS for non mmio eventfd
    - LP: #1514911
  * kvm: factor out core eventfd assign/deassign logic
    - LP: #1514911
  * kvm: fix double free for fast mmio eventfd
    - LP: #1514911
  * kvm: fix zero length mmio searching
    - LP: #1514911
  * ARM: fix Thumb2 signal handling when ARMv6 is enabled
    - LP: #1514911
  * powerpc/boot: Specify ABI v2 when building an LE boot wrapper
    - LP: #1514911
  * powerpc/mm: Recompute hash value after a failed update
    - LP: #1514911
  * x86/platform: Fix Geode LX timekeeping in the generic x86 build
    - LP: #1514911
  * arm64: compat: fix vfp save/restore across signal handlers in
    big-endian
    - LP: #1514911
  * arm64: errata: add module build workaround for erratum #843419
    - LP: #1514911
  * arm64: KVM: Disable virtual timer even if the guest is not using it
    - LP: #1514911
  * arm: KVM: Disable virtual timer even if the guest is not using it
    - LP: #1514911
  * hp-wmi: Add missing __init annotations to initialization code
    - LP: #1514911
  * hp-wmi: limit hotkey enable
    - LP: #1514911
  * zram: fix possible use after free in zcomp_create()
    - LP: #1514911
  * perf header: Fixup reading of HEADER_NRCPUS feature
    - LP: #1514911
  * spi: spi-pxa2xx: Check status register to determine if SSSR_TINT is
    disabled
    - LP: #1514911
  * spi: Fix documentation of spi_alloc_master()
    - LP: #1514911
  * USB: option: add ZTE PIDs
    - LP: #1514911
  * drm/vmwgfx: Fix up user_dmabuf refcounting
    - LP: #1514911
  * ARM: dts: omap3-beagle: make i2c3, ddc and tfp410 gpio work again
    - LP: #1514911
  * Btrfs: fix read corruption of compressed and shared extents
    - LP: #1514911
  * btrfs: skip waiting on ordered range for special files
    - LP: #1514911
  * usb: chipidea: udc: using the correct stall implementation
    - LP: #1514911
  * net: mvneta: fix DMA buffer unmapping in mvneta_rx()
    - LP: #1514911
  * iser-target: remove command with state ISTATE_REMOVE
    - LP: #1514911
  * staging: ion: fix corruption of ion_import_dma_buf
    - LP: #1514911
  * KVM: x86: trap AMD MSRs for the TSeg base and mask
    - LP: #1514911
  * usb: Use the USB_SS_MULT() macro to get the burst multiplier.
    - LP: #1514911
  * xhci: give command abortion one more chance before killing xhci
    - LP: #1514911
  * usb: xhci: Clear XHCI_STATE_DYING on start
    - LP: #1514911
  * usb: xhci: Allow usb_add/remove_hcd() to be called repeatedly
    - LP: #1514911
  * xhci: change xhci 1.0 only restrictions to support xhci 1.1
    - LP: #1514911
  * xhci-mem: Use setup_timer
    - LP: #1514911
  * xhci: init command timeout timer earlier to avoid deleting it
    uninitialized
    - LP: #1514911
  * spi: xtensa-xtfpga: fix register endianness
    - LP: #1514911
  * disabling oplocks/leases via module parm enable_oplocks broken for SMB3
    - LP: #1514911
  * cifs: use server timestamp for ntlmv2 authentication
    - LP: #1514911
  * x86/paravirt: Replace the paravirt nop with a bona fide empty function
    - LP: #1514911
  * x86/nmi/64: Fix a paravirt stack-clobbering bug in the NMI code
    - LP: #1514911
  * ASoC: pxa: pxa2xx-ac97: fix dma requestor lines
    - LP: #1514911
  * ocfs2/dlm: fix deadlock when dispatch assert master
    - LP: #1514911
  * drm/i915/bios: handle MIPI Sequence Block v3+ gracefully
    - LP: #1514911
  * drm/qxl: only report first monitor as connected if we have no state
    - LP: #1514911
  * PCI: Fix devfn for VPD access through function 0
    - LP: #1514911
  * PCI: Use function 0 VPD for identical functions, regular VPD for others
    - LP: #1514911
  * netfilter: nft_compat: skip family comparison in case of NFPROTO_UNSPEC
    - LP: #1514911
  * ASoC: fix broken pxa SoC support
    - LP: #1514911
  * ARM: dts: omap5-uevm.dts: fix i2c5 pinctrl offsets
    - LP: #1514911
  * vxlan: set needed headroom correctly
    - LP: #1514911
  * jbd2: avoid infinite loop when destroying aborted journal
    - LP: #1514911
  * asix: Don't reset PHY on if_up for ASIX 88772
    - LP: #1514911
  * asix: Do full reset during ax88772_bind
    - LP: #1514911
  * fib_rules: Fix dump_rules() not to exit early
    - LP: #1514911
  * net/xen-netfront: only napi_synchronize() if running
    - LP: #1514911
  * cpufreq: intel_pstate: Remove unnecessary type casting in div_s64()
    call
    - LP: #1514911
  * intel_pstate: Fix overflow in busy_scaled due to long delay
    - LP: #1514911
  * tools lib traceevent: Fix string handling in heterogeneous arch
    environments
    - LP: #1514911
  * perf tools: Fix copying of /proc/kcore
    - LP: #1514911
  * m68k: Define asmlinkage_protect
    - LP: #1514911
  * UBI: Validate data_size
    - LP: #1514911
  * UBI: return ENOSPC if no enough space available
    - LP: #1514911
  * MIPS: dma-default: Fix 32-bit fall back to GFP_DMA
    - LP: #1514911
  * MIPS: CPS: Stop dangling delay slot from has_mt.
    - LP: #1514911
  * MIPS: CPS: Don't include MT code in non-MT kernels.
    - LP: #1514911
  * MIPS: CPS: #ifdef on CONFIG_MIPS_MT_SMP rather than CONFIG_MIPS_MT
    - LP: #1514911
  * drm/qxl: recreate the primary surface when the bo is not primary
    - LP: #1514911
  * genirq: Fix race in register_irq_proc()
    - LP: #1514911
  * x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at
    runtime, instead of top-down
    - LP: #1514911
  * Use WARN_ON_ONCE for missing X86_FEATURE_NRIPS
    - LP: #1514911
  * mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy
    a fault
    - LP: #1514911
  * x86/mm: Set NX on gap between __ex_table and rodata
    - LP: #1514911
  * clocksource: Fix abs() usage w/ 64bit values
    - LP: #1514911
  * dmaengine: dw: properly read DWC_PARAMS register
    - LP: #1514911
  * mm/slab: fix unexpected index mapping result of
    kmalloc_size(INDEX_NODE+1)
    - LP: #1514911
  * drm/vmwgfx: Fix kernel NULL pointer dereference on older hardware
    - LP: #1514911
  * fs: if a coredump already exists, unlink and recreate with O_EXCL
    - LP: #1514911
  * sctp: donot reset the overall_error_count in SHUTDOWN_RECEIVE state
    - LP: #1514911
  * ipc/sem.c: fully initialize sem_array before making it visible
    - LP: #1514911
  * drivers: usb :fsl: Implement Workaround for USB Erratum A007792
    - LP: #1514911
  * drivers: usb: fsl: Workaround for USB erratum-A005275
    - LP: #1514911
  * l2tp: protect tunnel->del_work by ref_count
    - LP: #1514911
  * af_unix: Convert the unix_sk macro to an inline function for type
    safety
    - LP: #1514911
  * af_unix: return data from multiple SKBs on recv() with MSG_PEEK flag
    - LP: #1514911
  * net/unix: fix logic about sk_peek_offset
    - LP: #1514911
  * skbuff: Fix skb checksum flag on skb pull
    - LP: #1514911
  * skbuff: Fix skb checksum partial check.
    - LP: #1514911
  * net: add pfmemalloc check in sk_add_backlog()
    - LP: #1514911
  * ppp: don't override sk->sk_state in pppoe_flush_dev()
    - LP: #1514911
  * ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings
    - LP: #1514911
  * ovs: do not allocate memory from offline numa node
    - LP: #1514911
  * netlink: Trim skb to alloc size to avoid MSG_TRUNC
    - LP: #1514911
  * net: Fix skb csum races when peeking
    - LP: #1500484
  * [stable-only] net: add length argument to
    skb_copy_and_csum_datagram_iovec
    - LP: #1514911
  * KEYS: Fix race between key destruction and finding a keyring by name
    - LP: #1514911
  * KEYS: Fix crash when attempt to garbage collect an uninstantiated
    keyring
    - LP: #1514911
  * KEYS: Don't permit request_key() to construct a new keyring
    - LP: #1514911
  * Btrfs: update fix for read corruption of compressed and shared extents
    - LP: #1514911
  * Linux 3.16.7-ckt19
    - LP: #1514911

 -- Luis Henriques <luis.henriques@xxxxxxxxxxxxx>  Tue, 17 Nov 2015
09:39:34 +0000

** Changed in: linux-lts-utopic (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1516682

Title:
  a trusty stable release patch breaks module loading on arm64

Status in linux package in Ubuntu:
  Invalid
Status in linux-lts-utopic package in Ubuntu:
  Invalid
Status in linux source package in Trusty:
  Fix Released
Status in linux-lts-utopic source package in Trusty:
  Fix Released
Status in linux source package in Vivid:
  Fix Released
Status in linux-lts-utopic source package in Vivid:
  Invalid

Bug description:
  This upstream patch "arm64: errata: add module build workaround for
  erratum #843419" breaks module loading on arm64 and was pulled into
  trusty-proposed via stable release. The trusty master-next commit is:
  f869de1cf9b57d28dbba9f15569f5ae2c54c8724. Wily saw this as well, since
  it also carries the patch and the workaround used there was to disable
  CONFIG_ARM64_ERRATUM_843419.

  The issue was mentioned to upstream here:
  http://www.spinics.net/lists/arm-kernel/msg449982.html
  and a fix was proposed here: 
  http://www.spinics.net/lists/arm-kernel/msg450685.html

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