Add xattrs to allow the user to get/set metadata in lieu of having pioctl()
available.  The following xattrs are now available:

 - "afs.cell"

   The name of the cell in which the vnode's volume resides.

 - "afs.fid"

   The volume ID, vnode ID and vnode uniquifier of the file as three hex
   numbers separated by colons.

 - "afs.volume"

   The name of the volume in which the vnode resides.

For example:

	# getfattr -d -m ".*" /mnt/scratch
	getfattr: Removing leading '/' from absolute path names
	# file: mnt/scratch
	afs.cell="mycell.myorg.org"
	afs.fid="10000b:1:1"
	afs.volume="scratch"
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The AFS_ACE_READ and AFS_ACE_WRITE permission bits should not
be used to make access decisions for the directory itself.  They
are meant to control access for the objects contained in that
directory.

Reading a directory is allowed if the AFS_ACE_LOOKUP bit is set.
This would cause an incorrect access denied error for a directory
with AFS_ACE_LOOKUP but not AFS_ACE_READ.

The AFS_ACE_WRITE bit does not allow operations that modify the
directory.  For a directory with AFS_ACE_WRITE but neither
AFS_ACE_INSERT nor AFS_ACE_DELETE, this would result in trying
operations that would ultimately be denied by the server.
Signed-off-by: NMarc Dionne <marc.dionne@auristor.com>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The retry logic for netlink_attachskb() inside sys_mq_notify()
is nasty and vulnerable:

1) The sock refcnt is already released when retry is needed
2) The fd is controllable by user-space because we already
   release the file refcnt

so we when retry but the fd has been just closed by user-space
during this small window, we end up calling netlink_detachskb()
on the error path which releases the sock again, later when
the user-space closes this socket a use-after-free could be
triggered.

Setting 'sock' to NULL here should be sufficient to fix it.
Reported-by: NGeneBlue <geneblue.mail@gmail.com>
Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: stable@kernel.org
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Pull x86 fixes from Thomas Gleixner:
 "The x86 updates contain:

   - A fix for a longstanding PAT bug, where PAT was reported on CPUs
     that do not support it, which leads to wrong caching attributes and
     missing MTRR updates

   - Prevent overwriting of the e820 firmware table, which causes kexec
     kernels to lose the fake mptable which is stored there.

   - Cleanup of the UV/BAU code, removing unused code and making local
     functions static"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot/e820: Introduce the bootloader provided e820_table_firmware[] table
  x86/boot/e820: Rename the e820_table_firmware to e820_table_kexec
  x86/boot/e820: Avoid overwriting e820_table_firmware
  x86/mm/pat: Don't report PAT on CPUs that don't support it
  x86/platform/uv/BAU: Minor cleanup, make some local functions static

Pull timers fixlet from Thomas Gleixner:
 "Add Frederic Weisbecker as NOHZ/dyntick maintainer"

[ And an unmentioned and unrelated typo fix in the same commit? Hmm.. ]

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  MAINTAINERS: Add Frederic Weisbecker as nohz/dyntics maintainer

Pull smp/hotplug fix from Thomas Gleixner:
 "A single fix for a brown paperbag bug:

  The unparking of the initial percpu threads of an upcoming CPU happens
  right now on the idle task, but that's wrong as the unpark function
  might sleep. Move it to the control CPU."

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  smp/hotplug: Move unparking of percpu threads to the control CPU

Pull scheduler fixes from Thomas Gleixner:
 "This scheduler update provides:

   - The (hopefully) final fix for the vtime accounting issues which
     were around for quite some time

   - Use types known to user space in UAPI headers to unbreak user space
     builds

   - Make load balancing respect the current scheduling domain again
     instead of evaluating unrelated CPUs"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/headers/uapi: Fix linux/sched/types.h userspace compilation errors
  sched/fair: Fix load_balance() affinity redo path
  sched/cputime: Accumulate vtime on top of nsec clocksource
  sched/cputime: Move the vtime task fields to their own struct
  sched/cputime: Rename vtime fields
  sched/cputime: Always set tsk->vtime_snap_whence after accounting vtime
  vtime, sched/cputime: Remove vtime_account_user()
  Revert "sched/cputime: Refactor the cputime_adjust() code"

Pull perf fixes from Thomas Gleixner:
 "A couple of fixes for perf and kprobes:

   - Add he missing exclude_kernel attribute for the precise_ip level so
     !CAP_SYS_ADMIN users get the proper results.

   - Warn instead of failing completely when perf has no unwind support
     for a particular architectiure built in.

   - Ensure that jprobes are at function entry and not at some random
     place"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kprobes: Ensure that jprobe probepoints are at function entry
  kprobes: Simplify register_jprobes()
  kprobes: Rename [arch_]function_offset_within_entry() to [arch_]kprobe_on_func_entry()
  perf unwind: Do not fail due to missing unwind support
  perf evsel: Set attr.exclude_kernel when probing max attr.precise_ip

Pull locking fixes from Thomas Gleixner:

 - Fix the EINTR logic in rwsem-spinlock to avoid double locking by a
   writer and a reader

 - Add a missing include to qspinlocks

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/qspinlock: Explicitly include asm/prefetch.h
  locking/rwsem-spinlock: Fix EINTR branch in __down_write_common()

Pull irq fixes from Thomas Gleixner:

 - A few fixes mopping up the fallout of the big irq overhaul

 - Move the interrupt resource management logic out of the spin locked,
   irq disabled region to avoid unnecessary restrictions of the resource
   callbacks

 - Preparation for reworking the per cpu irq request function.

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqdomain: Allow ACPI device nodes to be used as irqdomain identifiers
  genirq/debugfs: Remove redundant NULL pointer check
  genirq: Allow to pass the IRQF_TIMER flag with percpu irq request
  genirq/timings: Move free timings out of spinlocked region
  genirq: Move irq resource handling out of spinlocked region
  genirq: Add mutex to irq desc to serialize request/free_irq()
  genirq: Move bus locking into __setup_irq()
  genirq: Force inlining of __irq_startup_managed to prevent build failure
  genirq/debugfs: Fix build for !CONFIG_IRQ_DOMAIN

Pull objtool fix from Thomas Gleixner:
 "A fix to the objtool sibling call detection logic to distinguish
  normal jumps inside a function from a real sibling call"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix sibling call detection logic

Pull ext4 updates from Ted Ts'o:
 "The first major feature for ext4 this merge window is the largedir
  feature, which allows ext4 directories to support over 2 billion
  directory entries (assuming ~64 byte file names; in practice, users
  will run into practical performance limits first.) This feature was
  originally written by the Lustre team, and credit goes to Artem
  Blagodarenko from Seagate for getting this feature upstream.

  The second major major feature allows ext4 to support extended
  attribute values up to 64k. This feature was also originally from
  Lustre, and has been enhanced by Tahsin Erdogan from Google with a
  deduplication feature so that if multiple files have the same xattr
  value (for example, Windows ACL's stored by Samba), only one copy will
  be stored on disk for encoding and caching efficiency.

  We also have the usual set of bug fixes, cleanups, and optimizations"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (47 commits)
  ext4: fix spelling mistake: "prellocated" -> "preallocated"
  ext4: fix __ext4_new_inode() journal credits calculation
  ext4: skip ext4_init_security() and encryption on ea_inodes
  fs: generic_block_bmap(): initialize all of the fields in the temp bh
  ext4: change fast symlink test to not rely on i_blocks
  ext4: require key for truncate(2) of encrypted file
  ext4: don't bother checking for encryption key in ->mmap()
  ext4: check return value of kstrtoull correctly in reserved_clusters_store
  ext4: fix off-by-one fsmap error on 1k block filesystems
  ext4: return EFSBADCRC if a bad checksum error is found in ext4_find_entry()
  ext4: return EIO on read error in ext4_find_entry
  ext4: forbid encrypting root directory
  ext4: send parallel discards on commit completions
  ext4: avoid unnecessary stalls in ext4_evict_inode()
  ext4: add nombcache mount option
  ext4: strong binding of xattr inode references
  ext4: eliminate xattr entry e_hash recalculation for removes
  ext4: reserve space for xattr entries/names
  quota: add get_inode_usage callback to transfer multi-inode charges
  ext4: xattr inode deduplication
  ...

Pull fscrypt updates from Ted Ts'o:
 "Add support for 128-bit AES and some cleanups to fscrypt"

* tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt:
  fscrypt: make ->dummy_context() return bool
  fscrypt: add support for AES-128-CBC
  fscrypt: inline fscrypt_free_filename()

Pull waitid fix from Al Viro.

* 'waitid-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix waitid(2) breakage

Pull PCI updates from Bjorn Helgaas:

  - add sysfs max_link_speed/width, current_link_speed/width (Wong Vee
    Khee)

  - make host bridge IRQ mapping much more generic (Matthew Minter,
    Lorenzo Pieralisi)

  - convert most drivers to pci_scan_root_bus_bridge() (Lorenzo
    Pieralisi)

  - mutex sriov_configure() (Jakub Kicinski)

  - mutex pci_error_handlers callbacks (Christoph Hellwig)

  - split ->reset_notify() into ->reset_prepare()/reset_done()
    (Christoph Hellwig)

  - support multiple PCIe portdrv interrupts for MSI as well as MSI-X
    (Gabriele Paoloni)

  - allocate MSI/MSI-X vector for Downstream Port Containment (Gabriele
    Paoloni)

  - fix MSI IRQ affinity pre/post/min_vecs issue (Michael Hernandez)

  - test INTx masking during enumeration, not at run-time (Piotr Gregor)

  - avoid using device_may_wakeup() for runtime PM (Rafael J. Wysocki)

  - restore the status of PCI devices across hibernation (Chen Yu)

  - keep parent resources that start at 0x0 (Ard Biesheuvel)

  - enable ECRC only if device supports it (Bjorn Helgaas)

  - restore PRI and PASID state after Function-Level Reset (CQ Tang)

  - skip DPC event if device is not present (Keith Busch)

  - check domain when matching SMBIOS info (Sujith Pandel)

  - mark Intel XXV710 NIC INTx masking as broken (Alex Williamson)

  - avoid AMD SB7xx EHCI USB wakeup defect (Kai-Heng Feng)

  - work around long-standing Macbook Pro poweroff issue (Bjorn Helgaas)

  - add Switchtec "running" status flag (Logan Gunthorpe)

  - fix dra7xx incorrect RW1C IRQ register usage (Arvind Yadav)

  - modify xilinx-nwl IRQ chip for legacy interrupts (Bharat Kumar
    Gogada)

  - move VMD SRCU cleanup after bus, child device removal (Jon Derrick)

  - add Faraday clock handling (Linus Walleij)

  - configure Rockchip MPS and reorganize (Shawn Lin)

  - limit Qualcomm TLP size to 2K (hardware issue) (Srinivas Kandagatla)

  - support Tegra MSI 64-bit addressing (Thierry Reding)

  - use Rockchip normal (not privileged) register bank (Shawn Lin)

  - add HiSilicon Kirin SoC PCIe controller driver (Xiaowei Song)

  - add Sigma Designs Tango SMP8759 PCIe controller driver (Marc
    Gonzalez)

  - add MediaTek PCIe host controller support (Ryder Lee)

  - add Qualcomm IPQ4019 support (John Crispin)

  - add HyperV vPCI protocol v1.2 support (Jork Loeser)

  - add i.MX6 regulator support (Quentin Schulz)

* tag 'pci-v4.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (113 commits)
  PCI: tango: Add Sigma Designs Tango SMP8759 PCIe host bridge support
  PCI: Add DT binding for Sigma Designs Tango PCIe controller
  PCI: rockchip: Use normal register bank for config accessors
  dt-bindings: PCI: Add documentation for MediaTek PCIe
  PCI: Remove __pci_dev_reset() and pci_dev_reset()
  PCI: Split ->reset_notify() method into ->reset_prepare() and ->reset_done()
  PCI: xilinx: Make of_device_ids const
  PCI: xilinx-nwl: Modify IRQ chip for legacy interrupts
  PCI: vmd: Move SRCU cleanup after bus, child device removal
  PCI: vmd: Correct comment: VMD domains start at 0x10000, not 0x1000
  PCI: versatile: Add local struct device pointers
  PCI: tegra: Do not allocate MSI target memory
  PCI: tegra: Support MSI 64-bit addressing
  PCI: rockchip: Use local struct device pointer consistently
  PCI: rockchip: Check for clk_prepare_enable() errors during resume
  MAINTAINERS: Remove Wenrui Li as Rockchip PCIe driver maintainer
  PCI: rockchip: Configure RC's MPS setting
  PCI: rockchip: Reconfigure configuration space header type
  PCI: rockchip: Split out rockchip_pcie_cfg_configuration_accesses()
  PCI: rockchip: Move configuration accesses into rockchip_pcie_cfg_atu()
  ...

Pull MD update from Shaohua Li:

 - fixed deadlock in MD suspend and a potential bug in bio allocation
   (Neil Brown)

 - fixed signal issue (Mikulas Patocka)

 - fixed typo in FailFast test (Guoqing Jiang)

 - other trival fixes

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
  MD: fix sleep in atomic
  MD: fix a null dereference
  md: use a separate bio_set for synchronous IO.
  md: change the initialization value for a spare device spot to MD_DISK_ROLE_SPARE
  md/raid1: remove unused bio in sync_request_write
  md/raid10: fix FailFast test for wrong device
  md: don't use flush_signals in userspace processes
  md: fix deadlock between mddev_suspend() and md_write_start()

Pull input updates from Dmitry Torokhov:

 - a new driver for STM FingerTip touchscreen

 - a new driver for D-Link DIR-685 touch keys

 - updated list of supported devices in xpad driver

 - other assorted updates and fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (23 commits)
  MAINTAINERS: update input subsystem patterns
  Input: introduce KEY_ASSISTANT
  Input: xpad - sync supported devices with XBCD
  Input: xpad - sync supported devices with 360Controller
  Input: xen-kbdfront - use string constants from PV protocol
  Input: stmfts - mark all PM functions as __maybe_unused
  Input: add support for the STMicroelectronics FingerTip touchscreen
  Input: add D-Link DIR-685 touchkeys driver
  Input: s3c2410_ts - handle return value of clk_prepare_enable
  Input: axp20x-pek - add wakeup support
  Input: synaptics-rmi4 - use %phN to form F34 configuration ID
  Input: synaptics-rmi4 - change a char type to u8
  Input: sparse-keymap - remove sparse_keymap_free()
  Input: tsc2007 - move header file out of I2C realm
  Input: mms114 - move header file out of I2C realm
  Input: mcs - move header file out of I2C realm
  Input: lm8323 - move header file out of I2C realm
  Input: elantech - force relative mode on a certain module
  Input: elan_i2c - add support for fetching chip type on newer hardware
  Input: elan_i2c - check if device is there before really probing
  ...

Pull dmaengine updates from Vinod Koul:

 - removal of AVR32 support in dw driver as AVR32 is gone

 - new driver for Broadcom stream buffer accelerator (SBA) RAID driver

 - add support for Faraday Technology FTDMAC020 in amba-pl08x driver

 - IOMMU support in pl330 driver

 - updates to bunch of drivers

* tag 'dmaengine-4.13-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (36 commits)
  dmaengine: qcom_hidma: correct API violation for submit
  dmaengine: zynqmp_dma: Remove max len check in zynqmp_dma_prep_memcpy
  dmaengine: tegra-apb: Really fix runtime-pm usage
  dmaengine: fsl_raid: make of_device_ids const.
  dmaengine: qcom_hidma: allow ACPI/DT parameters to be overridden
  dmaengine: fsldma: set BWC, DAHTS and SAHTS values correctly
  dmaengine: Kconfig: Simplify the help text for MXS_DMA
  dmaengine: pl330: Delete unused functions
  dmaengine: Replace WARN_TAINT_ONCE() with pr_warn_once()
  dmaengine: Kconfig: Extend the dependency for MXS_DMA
  dmaengine: mxs: Use %zu for printing a size_t variable
  dmaengine: ste_dma40: Cleanup scatterlist layering violations
  dmaengine: imx-dma: cleanup scatterlist layering violations
  dmaengine: use proper name for the R-Car SoC
  dmaengine: imx-sdma: Fix compilation warning.
  dmaengine: imx-sdma: Handle return value of clk_prepare_enable
  dmaengine: pl330: Add IOMMU support to slave tranfers
  dmaengine: DW DMAC: Handle return value of clk_prepare_enable
  dmaengine: pl08x: use GENMASK() to create bitmasks
  dmaengine: pl08x: Add support for Faraday Technology FTDMAC020
  ...

Pull ARM updates from Russell King:

 - add support for ftrace-with-registers, which is needed for kgraft and
   other ftrace tools

 - support for mremap() for the sigpage/vDSO so that checkpoint/restore
   can work

 - add timestamps to each line of the register dump output

 - remove the unused KTHREAD_SIZE from nommu

 - align the ARM bitops APIs with the generic API (using unsigned long
   pointers rather than void pointers)

 - make the configuration of userspace Thumb support an expert option so
   that we can default it on, and avoid some hard to debug userspace
   crashes

* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8684/1: NOMMU: Remove unused KTHREAD_SIZE definition
  ARM: 8683/1: ARM32: Support mremap() for sigpage/vDSO
  ARM: 8679/1: bitops: Align prototypes to generic API
  ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS
  ARM: make configuration of userspace Thumb support an expert option
  ARM: 8673/1: Fix __show_regs output timestamps

Pull sparc updates from David Miller:

 1) Queued spinlocks and rwlocks for sparc64, from Babu Moger.

 2) Some const'ification from Arvind Yadav.

 3) LDC/VIO driver infrastructure changes to facilitate future upcoming
    drivers, from Jag Raman.

 4) Initialize sched_clock() et al. early so that the initial printk
    timestamps are all done while the implementation is available and
    functioning. From Pavel Tatashin.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next: (38 commits)
  sparc: kernel: pmc: make of_device_ids const.
  sparc64: fix typo in property
  sparc64: add port_id to VIO device metadata
  sparc64: Enhance search for VIO device in MDESC
  sparc64: enhance VIO device probing
  sparc64: check if a client is allowed to register for MDESC notifications
  sparc64: remove restriction on VIO device name size
  sparc64: refactor code to obtain cfg_handle property from MDESC
  sparc64: add MDESC node name property to VIO device metadata
  sparc64: mdesc: use __GFP_REPEAT action modifier for VM allocation
  sparc64: expand MDESC interface
  sparc64: skip handshake for LDC channels in RAW mode
  sparc64: specify the device class in VIO version info. packet
  sparc64: ensure VIO operations are defined while being used
  sparc: kernel: apc: make of_device_ids const
  sparc/time: make of_device_ids const
  sparc64: broken %tick frequency on spitfire cpus
  sparc64: use prom interface to get %stick frequency
  sparc64: optimize functions that access tick
  sparc64: add hot-patched and inlined get_tick()
  ...

Pull networking fixes from David Miller:
 "Mostly fixing some light fallout from the changes that went into the
  merge window.

   1) Fix memory leaks on network namespace teardown in netfilter, from
      Liping Zhang.

   2) When comparing ipv6 nexthops, we have to take the lightweight
      tunnel state into account as well. From David Ahern.

   3) Fix socket option object length check in the new TLS code, from
      Matthias Rosenfelder.

   4) Fix memory leak in nfp driver flower support, from Jakub Kicinski.

   5) Several netlink attribute validation fixes in cfg80211, from
      Srinivas Dasari.

   6) Fix context array leak in virtio_net, from Jason Wang.

   7) SKB use after free in hns driver, from Yusheng Lin.

   8) Fix socket leak on accept() in RDS, from Sowmini Varadhan. Also
      add a WARN_ON() to sock_graft() so other protocol stacks don't
      trip over this as well"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (26 commits)
  net: ethernet: mediatek: remove useless code in mtk_probe()
  mpls: fix uninitialized in_label var warning in mpls_getroute
  doc: SKB_GSO_[IPIP|SIT] have been replaced
  bonding: avoid NETDEV_CHANGEMTU event when unregistering slave
  net/sock: add WARN_ON(parent->sk) in sock_graft()
  rds: tcp: use sock_create_lite() to create the accept socket
  net: hns: Fix a skb used after free bug
  net: hns: Fix a wrong op phy C45 code
  net: macb: Adding Support for Jumbo Frames up to 10240 Bytes in SAMA5D3
  net: Update networking MAINTAINERS entry.
  virtio-net: fix leaking of ctx array
  cfg80211: Validate frequencies nested in NL80211_ATTR_SCAN_FREQUENCIES
  cfg80211: Define nla_policy for NL80211_ATTR_LOCAL_MESH_POWER_MODE
  cfg80211: Check if NAN service ID is of expected size
  cfg80211: Check if PMKID attribute is of expected size
  arcnet: com20020-pci: Fix an error handling path in 'com20020pci_probe()'
  nfp: flower: add missing clean up call to avoid memory leaks
  vrf: fix bug_on triggered by rx when destroying a vrf
  ptp: dte: Use LL suffix for 64-bit constants
  sctp: set the value of flowi6_oif to sk_bound_dev_if to make sctp_v6_get_dst to find the correct route entry.
  ...

Pull misc filesystem updates from Al Viro:
 "Assorted normal VFS / filesystems stuff..."

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  dentry name snapshots
  Make statfs properly return read-only state after emergency remount
  fs/dcache: init in_lookup_hashtable
  minix: Deinline get_block, save 2691 bytes
  fs: Reorder inode_owner_or_capable() to avoid needless
  fs: warn in case userspace lied about modprobe return

Pull spi uaccess delousing from Al Viro:
 "Getting rid of pointless __get_user() and friends in drivers/spi.

  [ the only reason it's on a separate branch is that I hoped it would
    be picked by spi folks; looks like mail asking them to grab it got
    lost and I hadn't followed up on that ]"

* 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  spidev: quit messing with access_ok()

Pull __copy_in_user removal from Al Viro:
 "There used to be 6 places in the entire tree calling __copy_in_user(),
  all of them bogus.

  Four got killed off in work.drm branch, this takes care of the
  remaining ones and kills the definition of that sucker"

* 'work.__copy_in_user' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  kill __copy_in_user()
  sanitize do_i2c_smbus_ioctl()

We lose the distinction between "found a PID" and "nothing, but that's not
an error" a bit too early in waitid().  Easily fixed, fortunately...
Reported-by: NMarkus Trippelsdorf <markus@trippelsdorf.de>
Fixes: 67d7ddde ("waitid(2): leave copyout of siginfo to syscall itself")
Tested-by: NMarkus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Remove useless local variables _match_, _soc_ and the code related.

Notice that

const struct of_device_id of_mtk_match[] = {
        { .compatible = "mediatek,mt2701-eth" },
        {},
};

So match->data is NULL.
Suggested-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix the below warning generated by static checker:
    net/mpls/af_mpls.c:2111 mpls_getroute()
    error: uninitialized symbol 'in_label'."

Fixes: 397fc9e5 ("mpls: route get support")
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NRoopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Those enum values don't exist anymore.

Fixes: 7e13318d ("net: define gso types for IPx over IPv4 and IPv6")
CC: Tom Herbert <tom@herbertland.com>
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As Hongjun/Nicolas summarized in their original patch:

"
When a device changes from one netns to another, it's first unregistered,
then the netns reference is updated and the dev is registered in the new
netns. Thus, when a slave moves to another netns, it is first
unregistered. This triggers a NETDEV_UNREGISTER event which is caught by
the bonding driver. The driver calls bond_release(), which calls
dev_set_mtu() and thus triggers NETDEV_CHANGEMTU (the device is still in
the old netns).
"

This is a very special case, because the device is being unregistered
no one should still care about the NETDEV_CHANGEMTU event triggered
at this point, we can avoid broadcasting this event on this path,
and avoid touching inetdev_event()/addrconf_notify() path.

It requires to export __dev_set_mtu() to bonding driver.
Reported-by: NHongjun Li <hongjun.li@6wind.com>
Reported-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Sowmini Varadhan says:

====================
rds-tcp: sock_graft() leak

Following up on the discussion at
  https://www.spinics.net/lists/netdev/msg442859.html
- make rds_tcp_accept_one() call sock_create_lite()
- add a WARN_ON() to sock_graft()

Tested by running an infinite while() loop that does
(module-load; rds-stress; module-unload) and monitors
TCP slabinfo while the test is running.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

sock_graft() unilaterally sets up parent->sk based on the
assumption that the existing parent->sk is null. If this
condition is not true, then the existing parent->sk would
be leaked, so add a WARN_ON() to alert callers who may fall
in this category.
Signed-off-by: NSowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are two problems with calling sock_create_kern() from
rds_tcp_accept_one()
1. it sets up a new_sock->sk that is wasteful, because this ->sk
   is going to get replaced by inet_accept() in the subsequent ->accept()
2. The new_sock->sk is a leaked reference in sock_graft() which
   expects to find a null parent->sk

Avoid these problems by calling sock_create_lite().
Signed-off-by: NSowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: NSantosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Lin Yun Sheng says:

====================
Bugfixs for hns ethernet driver

This patchset fix skb used after free and C45 op code issues
in hns driver.

Patch V2:
	1. Remove ndev->feature checking in TX description patch.
	2. Add Fixes: Tag in patch description.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

skb maybe freed in hns_nic_net_xmit_hw() and return NETDEV_TX_OK,
which cause hns_nic_net_xmit to use a freed skb.

BUG: KASAN: use-after-free in hns_nic_net_xmit_hw+0x62c/0x940...
	[17659.112635]      alloc_debug_processing+0x18c/0x1a0
	[17659.117208]      __slab_alloc+0x52c/0x560
	[17659.120909]      kmem_cache_alloc_node+0xac/0x2c0
	[17659.125309]      __alloc_skb+0x6c/0x260
	[17659.128837]      tcp_send_ack+0x8c/0x280
	[17659.132449]      __tcp_ack_snd_check+0x9c/0xf0
	[17659.136587]      tcp_rcv_established+0x5a4/0xa70
	[17659.140899]      tcp_v4_do_rcv+0x27c/0x620
	[17659.144687]      tcp_prequeue_process+0x108/0x170
	[17659.149085]      tcp_recvmsg+0x940/0x1020
	[17659.152787]      inet_recvmsg+0x124/0x180
	[17659.156488]      sock_recvmsg+0x64/0x80
	[17659.160012]      SyS_recvfrom+0xd8/0x180
	[17659.163626]      __sys_trace_return+0x0/0x4
	[17659.167506] INFO: Freed in kfree_skbmem+0xa0/0xb0 age=23 cpu=1 pid=13
	[17659.174000]      free_debug_processing+0x1d4/0x2c0
	[17659.178486]      __slab_free+0x240/0x390
	[17659.182100]      kmem_cache_free+0x24c/0x270
	[17659.186062]      kfree_skbmem+0xa0/0xb0
	[17659.189587]      __kfree_skb+0x28/0x40
	[17659.193025]      napi_gro_receive+0x168/0x1c0
	[17659.197074]      hns_nic_rx_up_pro+0x58/0x90
	[17659.201038]      hns_nic_rx_poll_one+0x518/0xbc0
	[17659.205352]      hns_nic_common_poll+0x94/0x140
	[17659.209576]      net_rx_action+0x458/0x5e0
	[17659.213363]      __do_softirq+0x1b8/0x480
	[17659.217062]      run_ksoftirqd+0x64/0x80
	[17659.220679]      smpboot_thread_fn+0x224/0x310
	[17659.224821]      kthread+0x150/0x170
	[17659.228084]      ret_from_fork+0x10/0x40

	BUG: KASAN: use-after-free in hns_nic_net_xmit+0x8c/0xc0...
	[17751.080490]      __slab_alloc+0x52c/0x560
	[17751.084188]      kmem_cache_alloc+0x244/0x280
	[17751.088238]      __build_skb+0x40/0x150
	[17751.091764]      build_skb+0x28/0x100
	[17751.095115]      __alloc_rx_skb+0x94/0x150
	[17751.098900]      __napi_alloc_skb+0x34/0x90
	[17751.102776]      hns_nic_rx_poll_one+0x180/0xbc0
	[17751.107097]      hns_nic_common_poll+0x94/0x140
	[17751.111333]      net_rx_action+0x458/0x5e0
	[17751.115123]      __do_softirq+0x1b8/0x480
	[17751.118823]      run_ksoftirqd+0x64/0x80
	[17751.122437]      smpboot_thread_fn+0x224/0x310
	[17751.126575]      kthread+0x150/0x170
	[17751.129838]      ret_from_fork+0x10/0x40
	[17751.133454] INFO: Freed in kfree_skbmem+0xa0/0xb0 age=19 cpu=7 pid=43
	[17751.139951]      free_debug_processing+0x1d4/0x2c0
	[17751.144436]      __slab_free+0x240/0x390
	[17751.148051]      kmem_cache_free+0x24c/0x270
	[17751.152014]      kfree_skbmem+0xa0/0xb0
	[17751.155543]      __kfree_skb+0x28/0x40
	[17751.159022]      napi_gro_receive+0x168/0x1c0
	[17751.163074]      hns_nic_rx_up_pro+0x58/0x90
	[17751.167041]      hns_nic_rx_poll_one+0x518/0xbc0
	[17751.171358]      hns_nic_common_poll+0x94/0x140
	[17751.175585]      net_rx_action+0x458/0x5e0
	[17751.179373]      __do_softirq+0x1b8/0x480
	[17751.183076]      run_ksoftirqd+0x64/0x80
	[17751.186691]      smpboot_thread_fn+0x224/0x310
	[17751.190826]      kthread+0x150/0x170
	[17751.194093]      ret_from_fork+0x10/0x40

Fixes: 13ac695e ("net:hns: Add support of Hip06 SoC to the Hislicon Network Subsystem")
Signed-off-by: NYunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Nlipeng <lipeng321@huawei.com>
Reported-by: NJun He <hjat2005@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As the user manual described, the second step to write to C45 phy
by mdio should be data, but not address. Here we should fix this
issue.

Fixes: 5b904d39 ("net: add Hisilicon Network Subsystem MDIO support")
Signed-off-by: NYunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Nlipeng <lipeng321@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As per the SAMA5D3 device specification it supports Jumbo frames.
But the suggested flag and length of bytes it supports was not updated
in this driver config_structure.
The maximum jumbo frames the device supports :
10240 bytes as per the device spec.

While changing the MTU value greater than 1500, it threw error:
sudo ifconfig eth1 mtu 9000
SIOCSIFMTU: Invalid argument

Add this support to driver so that it works as expected and designed.
Signed-off-by: Nvishnuvardhan <vardhanraj4143@gmail.com>
[nicolas.ferre@microchip.com: modify slightly commit msg]
Signed-off-by: NNicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Consistently use types provided by <linux/types.h> to fix the following
linux/sched/types.h userspace compilation errors:

  /usr/include/linux/sched/types.h:57:2: error: unknown type name 'u32'
    u32 size;
  ...
  u64 sched_period;
Signed-off-by: NDmitry V. Levin <ldv@altlinux.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org # v4.12
Fixes: e2d1e2ae ("sched/headers: Move various ABI definitions to <uapi/linux/sched/types.h>")
Link: http://lkml.kernel.org/r/20170705162328.GA11026@altlinux.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>

Similar to commit 90ec5e89 ("kretprobes: Ensure probe location is
at function entry"), ensure that the jprobe probepoint is at function
entry.
Signed-off-by: NNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/a4525af6c5a42df385efa31251246cf7cca73598.1499443367.git.naveen.n.rao@linux.vnet.ibm.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

Re-factor jprobe registration functions as the current version is
getting too unwieldy. Move the actual jprobe registration to
register_jprobe() and re-organize code accordingly.
Suggested-by: NIngo Molnar <mingo@kernel.org>
Signed-off-by: NNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/089cae4bfe73767f765291ee0e6fb0c3d240e5f1.1499443367.git.naveen.n.rao@linux.vnet.ibm.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

Rename function_offset_within_entry() to scope it to kprobe namespace by
using kprobe_ prefix, and to also simplify it.
Suggested-by: NIngo Molnar <mingo@kernel.org>
Suggested-by: NMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: NNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/3aa6c7e2e4fb6e00f3c24fa306496a66edb558ea.1499443367.git.naveen.n.rao@linux.vnet.ibm.comSigned-off-by: NIngo Molnar <mingo@kernel.org>