Xenial update: 4.4.209 upstream stable release

[Connor Kuehl]

SRU Justification

    Impact:
       The upstream process for stable tree updates is quite similar
       in scope to the Ubuntu SRU process, e.g., each patch has to
       demonstrably fix a bug, and each patch is vetted by upstream
       by originating either directly from a mainline/stable Linux tree or
       a minimally backported form of that patch. The following upstream
       stable patches should be included in the Ubuntu kernel:

* PM / devfreq: Don't fail devfreq_dev_release if not in list
* RDMA/cma: add missed unregister_pernet_subsys in init failure
* scsi: lpfc: Fix memory leak on lpfc_bsg_write_ebuf_set func
* scsi: qla2xxx: Don't call qlt_async_event twice
* scsi: iscsi: qla4xxx: fix double free in probe
* scsi: libsas: stop discovering if oob mode is disconnected
* usb: gadget: fix wrong endpoint desc
* md: raid1: check rdev before reference in raid1_sync_request func
* s390/cpum_sf: Adjust sampling interval to avoid hitting sample limits
* s390/cpum_sf: Avoid SBD overflow condition in irq handler
* xen/balloon: fix ballooned page accounting without hotplug enabled
* xfs: fix mount failure crash on invalid iclog memory access
* taskstats: fix data-race
* ALSA: ice1724: Fix sleep-in-atomic in Infrasonic Quartet support code
* MIPS: Avoid VDSO ABI breakage due to global register variable
* locks: print unsigned ino in /proc/locks
* dmaengine: Fix access to uninitialized dma_slave_caps
* compat_ioctl: block: handle Persistent Reservations
* gpiolib: fix up emulated open drain outputs
* ALSA: cs4236: fix error return comparison of an unsigned integer
* ftrace: Avoid potential division by zero in function profiler
* Bluetooth: btusb: fix PM leak in error case of setup
* Bluetooth: delete a stray unlock
* tty: serial: msm_serial: Fix lockup for sysrq and oops
* drm/mst: Fix MST sideband up-reply failure handling
* powerpc/pseries/hvconsole: Fix stack overread via udbg
* ath9k_htc: Modify byte order for an error message
* ath9k_htc: Discard undersized packets
* net: add annotations on hh->hh_len lockless accesses
* s390/smp: fix physical to logical CPU map for SMT
* locking/x86: Remove the unused atomic_inc_short() methd
* pstore/ram: Write new dumps to start of recycled zones
* locking/spinlock/debug: Fix various data races
* netfilter: ctnetlink: netns exit must wait for callbacks
* ARM: vexpress: Set-up shared OPP table instead of individual for each CPU
* netfilter: uapi: Avoid undefined left-shift in xt_sctp.h
* ARM: dts: am437x-gp/epos-evm: fix panel compatible
* powerpc: Ensure that swiotlb buffer is allocated from low memory
* bnx2x: Do not handle requests from VFs after parity
* bnx2x: Fix logic to get total no. of PFs per engine
* net: usb: lan78xx: Fix error message format specifier
* rfkill: Fix incorrect check to avoid NULL pointer dereference
* ASoC: wm8962: fix lambda value
* regulator: rn5t618: fix module aliases
* kconfig: don't crash on NULL expressions in expr_eq()
* parisc: Fix compiler warnings in debug_core.c
* llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c)
* net: stmmac: dwmac-sunxi: Allow all RGMII modes
* net: usb: lan78xx: fix possible skb leak
* pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM
* sctp: free cmd->obj.chunk for the unprocessed SCTP_CMD_REPLY
* tcp: fix "old stuff" D-SACK causing SACK to be treated as D-SACK
* vlan: vlan_changelink() should propagate errors
* vlan: fix memory leak in vlan_dev_set_egress_priority
* vxlan: fix tos value before xmit
* macvlan: do not assume mac_header is set in macvlan_broadcast()
* USB: core: fix check for duplicate endpoints
* USB: serial: option: add Telit ME910G1 0x110a composition
* Linux 4.4.209
* UBUNTU: upstream stable to v4.4.209

       4.4.209 upstream stable release
       from git://git.kernel.org/

[Connor Kuehl (connork)]

Note, the following commit was skipped because it has already been applied:

* Revert "perf report: Add warning when libunwind not compiled in"

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-174.204

---------------
linux (4.4.0-174.204) xenial; urgency=medium

  * xenial/linux: 4.4.0-174.204 -proposed tracker (LP: #1861122)

  * Xenial update: 4.4.211 upstream stable release (LP: #1860681)
    - hidraw: Return EPOLLOUT from hidraw_poll
    - HID: hidraw: Fix returning EPOLLOUT from hidraw_poll
    - HID: hidraw, uhid: Always report EPOLLOUT
    - cfg80211/mac80211: make ieee80211_send_layer2_update a public function
    - mac80211: Do not send Layer 2 Update frame before authorization
    - media: usb:zr364xx:Fix KASAN:null-ptr-deref Read in zr364xx_vidioc_querycap
    - p54usb: Fix race between disconnect and firmware loading
    - ALSA: line6: Fix write on zero-sized buffer
    - ALSA: line6: Fix memory leak at line6_init_pcm() error path
    - xen: let alloc_xenballooned_pages() fail if not enough memory free
    - wimax: i2400: fix memory leak
    - wimax: i2400: Fix memory leak in i2400m_op_rfkill_sw_toggle
    - ext4: fix use-after-free race with debug_want_extra_isize
    - ext4: add more paranoia checking in ext4_expand_extra_isize handling
    - rtc: mt6397: fix alarm register overwrite
    - iommu: Remove device link to group on failure
    - gpio: Fix error message on out-of-range GPIO in lookup table
    - hsr: reset network header when supervision frame is created
    - cifs: Adjust indentation in smb2_open_file
    - RDMA/srpt: Report the SCSI residual to the initiator
    - scsi: enclosure: Fix stale device oops with hot replug
    - scsi: sd: Clear sdkp->protection_type if disk is reformatted without PI
    - platform/x86: asus-wmi: Fix keyboard brightness cannot be set to 0
    - iio: imu: adis16480: assign bias value only if operation succeeded
    - mei: fix modalias documentation
    - clk: samsung: exynos5420: Preserve CPU clocks configuration during
      suspend/resume
    - compat_ioctl: handle SIOCOUTQNSD
    - tty: serial: imx: use the sg count from dma_map_sg
    - tty: serial: pch_uart: correct usage of dma_unmap_sg
    - media: exynos4-is: Fix recursive locking in isp_video_release()
    - spi: atmel: fix handling of cs_change set on non-last xfer
    - rtlwifi: Remove unnecessary NULL check in rtl_regd_init
    - rtc: msm6242: Fix reading of 10-hour digit
    - rseq/selftests: Turn off timeout setting
    - hexagon: work around compiler crash
    - ocfs2: call journal flush to mark journal as empty after journal recovery
      when mount
    - ALSA: seq: Fix racy access for queue timer in proc read
    - Fix built-in early-load Intel microcode alignment
    - block: fix an integer overflow in logical block size
    - USB: serial: simple: Add Motorola Solutions TETRA MTP3xxx and MTP85xx
    - USB: serial: opticon: fix control-message timeouts
    - USB: serial: suppress driver bind attributes
    - USB: serial: ch341: handle unbound port at reset_resume
    - USB: serial: io_edgeport: add missing active-port sanity check
    - USB: serial: quatech2: handle unbound ports
    - scsi: mptfusion: Fix double fetch bug in ioctl
    - usb: core: hub: Improved device recognition on remote wakeup
    - x86/efistub: Disable paging at mixed mode entry
    - mm/pag...