Merge Linux 4.4.238 kernel

Changes in 4.4.238: (86 commits)
        af_key: pfkey_dump needs parameter validation
        KVM: fix memory leak in kvm_io_bus_unregister_dev()
        kprobes: fix kill kprobe which has been marked as gone
        ftrace: Setup correct FTRACE_FL_REGS flags for module
        RDMA/ucma: ucma_context reference leak in error path
        mtd: Fix comparison in map_word_andequal()
        hdlc_ppp: add range checks in ppp_cp_parse_cr()
        tipc: use skb_unshare() instead in tipc_buf_append()
        net: add __must_check to skb_put_padto()
        ip: fix tos reflection in ack and reset packets
        serial: 8250: Avoid error message on reprobe
        scsi: aacraid: fix illegal IO beyond last LBA
        m68k: q40: Fix info-leak in rtc_ioctl
        gma/gma500: fix a memory disclosure bug due to uninitialized bytes
        ASoC: kirkwood: fix IRQ error handling
        PM / devfreq: tegra30: Fix integer overflow on CPU's freq max out
        mtd: cfi_cmdset_0002: don't free cfi->cfiq in error path of cfi_amdstd_setup()
        mfd: mfd-core: Protect against NULL call-back function pointer
        tracing: Adding NULL checks for trace_array descriptor pointer
        bcache: fix a lost wake-up problem caused by mca_cannibalize_lock
        xfs: fix attr leaf header freemap.size underflow
        kernel/sys.c: avoid copying possible padding bytes in copy_to_user
        neigh_stat_seq_next() should increase position index
        rt_cpu_seq_next should increase position index
        seqlock: Require WRITE_ONCE surrounding raw_seqcount_barrier
        ACPI: EC: Reference count query handlers under lock
        tracing: Set kernel_stack's caller size properly
        ar5523: Add USB ID of SMCWUSBT-G2 wireless adapter
        Bluetooth: Fix refcount use-after-free issue
        mm: pagewalk: fix termination condition in walk_pte_range()
        Bluetooth: prefetch channel before killing sock
        skbuff: fix a data race in skb_queue_len()
        audit: CONFIG_CHANGE don't log internal bookkeeping as an event
        selinux: sel_avc_get_stat_idx should increase position index
        scsi: lpfc: Fix RQ buffer leakage when no IOCBs available
        drm/omap: fix possible object reference leak
        dmaengine: tegra-apb: Prevent race conditions on channel's freeing
        media: go7007: Fix URB type for interrupt handling
        Bluetooth: guard against controllers sending zero'd events
        drm/amdgpu: increase atombios cmd timeout
        Bluetooth: L2CAP: handle l2cap config request during open state
        media: tda10071: fix unsigned sign extension overflow
        tpm: ibmvtpm: Wait for buffer to be set before proceeding
        tracing: Use address-of operator on section symbols
        serial: 8250_omap: Fix sleeping function called from invalid context during probe
        SUNRPC: Fix a potential buffer overflow in 'svc_print_xprts()'
        ubifs: Fix out-of-bounds memory access caused by abnormal value of node_len
        ALSA: usb-audio: Fix case when USB MIDI interface has more than one extra endpoint descriptor
        mm/filemap.c: clear page error before actual read
        mm/mmap.c: initialize align_offset explicitly for vm_unmapped_area
        KVM: Remove CREATE_IRQCHIP/SET_PIT2 race
        bdev: Reduce time holding bd_mutex in sync in blkdev_close()
        drivers: char: tlclk.c: Avoid data race between init and interrupt handler
        dt-bindings: sound: wm8994: Correct required supplies based on actual implementaion
        atm: fix a memory leak of vcc->user_back
        phy: samsung: s5pv210-usb2: Add delay after reset
        Bluetooth: Handle Inquiry Cancel error after Inquiry Complete
        USB: EHCI: ehci-mv: fix error handling in mv_ehci_probe()
        tty: serial: samsung: Correct clock selection logic
        ALSA: hda: Fix potential race in unsol event handler
        fuse: don't check refcount after stealing page
        USB: EHCI: ehci-mv: fix less than zero comparison of an unsigned int
        e1000: Do not perform reset in reset_task if we are already down
        printk: handle blank console arguments passed in.
        vfio/pci: fix memory leaks of eventfd ctx
        perf kcore_copy: Fix module map when there are no modules loaded
        mtd: rawnand: omap_elm: Fix runtime PM imbalance on error
        ceph: fix potential race in ceph_check_caps
        mtd: parser: cmdline: Support MTD names containing one or more colons
        x86/speculation/mds: Mark mds_user_clear_cpu_buffers() __always_inline
        vfio/pci: Clear error and request eventfd ctx after releasing
        vfio/pci: fix racy on error and request eventfd ctx
        s390/init: add missing __init annotations
        mwifiex: Increase AES key storage size to 256 bits
        batman-adv: bla: fix type misuse for backbone_gw hash indexing
        atm: eni: fix the missed pci_disable_device() for eni_init_one()
        batman-adv: mcast/TT: fix wrongly dropped or rerouted packets
        ALSA: asihpi: fix iounmap in error handler
        MIPS: Add the missing 'CPU_1074K' into __get_cpu_type()
        tty: vt, consw->con_scrolldelta cleanup
        kprobes: Fix to check probe enabled before disarm_kprobe_ftrace()
        lib/string.c: implement stpcpy
        ata: define AC_ERR_OK
        ata: make qc_prep return ata_completion_errors
        ata: sata_mv, avoid trigerrable BUG_ON
        Linux 4.4.238