1. 17 Feb, 2017 2 commits
  2. 08 Feb, 2017 9 commits
  3. 06 Feb, 2017 1 commit
    • NeilBrown's avatar
      NFSDv4: use export cache flushtime for changeid on V4ROOT objects. · b8800921
      NeilBrown authored
      If you change the set of filesystems that are exported, then
      the contents of various directories in the NFSv4 pseudo-root
      is likely to change.  However the change-id of those
      directories is currently tied to the underlying directory,
      so the client may not see the changes in a timely fashion.
      
      This patch changes the change-id number to be derived from the
      "flush_time" of the export cache.  Whenever any changes are
      made to the set of exported filesystems, this flush_time is
      updated.  The result is that clients see changes to the set
      of exported filesystems much more quickly, often immediately.
      Signed-off-by: default avatarNeilBrown <neilb@suse.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      b8800921
  4. 31 Jan, 2017 12 commits
    • J. Bruce Fields's avatar
      nfsd: opt in to labeled nfs per export · 32ddd944
      J. Bruce Fields authored
      Currently turning on NFSv4.2 results in 4.2 clients suddenly seeing the
      individual file labels as they're set on the server.  This is not what
      they've previously seen, and not appropriate in may cases.  (In
      particular, if clients have heterogenous security policies then one
      client's labels may not even make sense to another.)  Labeled NFS should
      be opted in only in those cases when the administrator knows it makes
      sense.
      
      It's helpful to be able to turn 4.2 on by default, and otherwise the
      protocol upgrade seems free of regressions.  So, default labeled NFS to
      off and provide an export flag to reenable it.
      
      Users wanting labeled NFS support on an export will henceforth need to:
      
      	- make sure 4.2 support is enabled on client and server (as
      	  before), and
      	- upgrade the server nfs-utils to a version supporting the new
      	  "security_label" export flag.
      	- set that "security_label" flag on the export.
      
      This is commit may be seen as a regression to anyone currently depending
      on security labels.  We believe those cases are currently rare.
      
      Reported-by: tibbs@math.uh.edu
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      32ddd944
    • J. Bruce Fields's avatar
      nfsd: constify nfsd_suppatttrs · 5cf23dbb
      J. Bruce Fields authored
      To keep me from accidentally writing to this again....
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      5cf23dbb
    • Scott Mayhew's avatar
      lockd: initialize sin6_scope_id in lockd_inet6addr_event() · c01410f7
      Scott Mayhew authored
      I noticed this was missing when I was testing with link local addresses.
      Signed-off-by: default avatarScott Mayhew <smayhew@redhat.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      c01410f7
    • Scott Mayhew's avatar
      nfsd: initialize sin6_scope_id in nfsd_inet6addr_event() · 7b19824d
      Scott Mayhew authored
      I noticed this was missing when I was testing with link local addresses.
      Signed-off-by: default avatarScott Mayhew <smayhew@redhat.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      7b19824d
    • Kinglong Mee's avatar
      NFSD: Remove unused value inode in nfsd_vfs_write · 865d50b2
      Kinglong Mee authored
      This is just cleanup, no change in functionality.
      Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
      Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      865d50b2
    • Kinglong Mee's avatar
      NFSD: cleanup dead codes and values in nfsd_write · 52e380e0
      Kinglong Mee authored
      This is just cleanup, no change in functionality.
      Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
      Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      52e380e0
    • Kinglong Mee's avatar
      NFSD: pass an integer for stable type to nfsd_vfs_write · 54bbb7d2
      Kinglong Mee authored
      After fae5096a "nfsd: assume writeable exportabled filesystems have
      f_sync" we no longer modify this argument.
      
      This is just cleanup, no change in functionality.
      Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      54bbb7d2
    • NeilBrown's avatar
      NFSD: correctly range-check v4.x minor version when setting versions. · e35659f1
      NeilBrown authored
      Writing to /proc/fs/nfsd/versions allows individual major versions
      and NFSv4 minor versions to be enabled or disabled.
      
      However NFSv4.0 cannot currently be disabled, thought there is no good reason.
      Also the minor number is parsed as a 'long' but used as an 'int'
      so '4294967297' will be incorrectly treated as '1'.
      
      This patch removes the test on 'minor == 0' and switches to kstrtouint()
      to get correct range checking.
      
      When reading from /proc/fs/nfsd/versions, 4.0 is current not reported.
      To allow the disabling for v4.0 to be visible, while maintaining
      backward compatibility, change code to report "-4.0" if appropriate, but
      not "+4.0".
      Signed-off-by: default avatarNeilBrown <neilb@suse.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      e35659f1
    • Neil Brown's avatar
      svcrpc: free contexts immediately on PROC_DESTROY · 2b477c00
      Neil Brown authored
      We currently handle a client PROC_DESTROY request by turning it
      CACHE_NEGATIVE, setting the expired time to now, and then waiting for
      cache_clean to clean it up later.  Since we forgot to set the cache's
      nextcheck value, that could take up to 30 minutes.  Also, though there's
      probably no real bug in this case, setting CACHE_NEGATIVE directly like
      this probably isn't a great idea in general.
      
      So let's just remove the entry from the cache directly, and move this
      bit of cache manipulation to a helper function.
      Signed-off-by: default avatarNeil Brown <neilb@suse.com>
      Reported-by: default avatarAndy Adamson <andros@netapp.com>
      Signed-off-by: default avatarAndy Adamson <andros@netapp.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      2b477c00
    • J. Bruce Fields's avatar
      svcrpc: fix oops in absence of krb5 module · 034dd34f
      J. Bruce Fields authored
      Olga Kornievskaia says: "I ran into this oops in the nfsd (below)
      (4.10-rc3 kernel). To trigger this I had a client (unsuccessfully) try
      to mount the server with krb5 where the server doesn't have the
      rpcsec_gss_krb5 module built."
      
      The problem is that rsci.cred is copied from a svc_cred structure that
      gss_proxy didn't properly initialize.  Fix that.
      
      [120408.542387] general protection fault: 0000 [#1] SMP
      ...
      [120408.565724] CPU: 0 PID: 3601 Comm: nfsd Not tainted 4.10.0-rc3+ #16
      [120408.567037] Hardware name: VMware, Inc. VMware Virtual =
      Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
      [120408.569225] task: ffff8800776f95c0 task.stack: ffffc90003d58000
      [120408.570483] RIP: 0010:gss_mech_put+0xb/0x20 [auth_rpcgss]
      ...
      [120408.584946]  ? rsc_free+0x55/0x90 [auth_rpcgss]
      [120408.585901]  gss_proxy_save_rsc+0xb2/0x2a0 [auth_rpcgss]
      [120408.587017]  svcauth_gss_proxy_init+0x3cc/0x520 [auth_rpcgss]
      [120408.588257]  ? __enqueue_entity+0x6c/0x70
      [120408.589101]  svcauth_gss_accept+0x391/0xb90 [auth_rpcgss]
      [120408.590212]  ? try_to_wake_up+0x4a/0x360
      [120408.591036]  ? wake_up_process+0x15/0x20
      [120408.592093]  ? svc_xprt_do_enqueue+0x12e/0x2d0 [sunrpc]
      [120408.593177]  svc_authenticate+0xe1/0x100 [sunrpc]
      [120408.594168]  svc_process_common+0x203/0x710 [sunrpc]
      [120408.595220]  svc_process+0x105/0x1c0 [sunrpc]
      [120408.596278]  nfsd+0xe9/0x160 [nfsd]
      [120408.597060]  kthread+0x101/0x140
      [120408.597734]  ? nfsd_destroy+0x60/0x60 [nfsd]
      [120408.598626]  ? kthread_park+0x90/0x90
      [120408.599448]  ret_from_fork+0x22/0x30
      
      Fixes: 1d658336 "SUNRPC: Add RPC based upcall mechanism for RPCGSS auth"
      Cc: stable@vger.kernel.org
      Cc: Simo Sorce <simo@redhat.com>
      Reported-by: default avatarOlga Kornievskaia <kolga@netapp.com>
      Tested-by: default avatarOlga Kornievskaia <kolga@netapp.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      034dd34f
    • Christoph Hellwig's avatar
      nfsd: special case truncates some more · 41f53350
      Christoph Hellwig authored
      Both the NFS protocols and the Linux VFS use a setattr operation with a
      bitmap of attributs to set to set various file attributes including the
      file size and the uid/gid.
      
      The Linux syscalls never mixes size updates with unrelated updates like
      the uid/gid, and some file systems like XFS and GFS2 rely on the fact
      that truncates might not update random other attributes, and many other
      file systems handle the case but do not update the different attributes
      in the same transaction.  NFSD on the other hand passes the attributes
      it gets on the wire more or less directly through to the VFS, leading to
      updates the file systems don't expect.  XFS at least has an assert on
      the allowed attributes, which caught an unusual NFS client setting the
      size and group at the same time.
      
      To handle this issue properly this switches nfsd to call vfs_truncate
      for size changes, and then handle all other attributes through
      notify_change.  As a side effect this also means less boilerplace code
      around the size change as we can now reuse the VFS code.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      41f53350
    • Kinglong Mee's avatar
      NFSD: Fix a null reference case in find_or_create_lock_stateid() · d19fb70d
      Kinglong Mee authored
      nfsd assigns the nfs4_free_lock_stateid to .sc_free in init_lock_stateid().
      
      If nfsd doesn't go through init_lock_stateid() and put stateid at end,
      there is a NULL reference to .sc_free when calling nfs4_put_stid(ns).
      
      This patch let the nfs4_stid.sc_free assignment to nfs4_alloc_stid().
      
      Cc: stable@vger.kernel.org
      Fixes: 356a95ec "nfsd: clean up races in lock stateid searching..."
      Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
      Reviewed-by: default avatarJeff Layton <jlayton@redhat.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      d19fb70d
  5. 29 Jan, 2017 3 commits
    • Linus Torvalds's avatar
      Linux 4.10-rc6 · 566cf877
      Linus Torvalds authored
      566cf877
    • Linus Torvalds's avatar
      drm/i915: Check for NULL i915_vma in intel_unpin_fb_obj() · 39cb2c9a
      Linus Torvalds authored
      I've seen this trigger twice now, where the i915_gem_object_to_ggtt()
      call in intel_unpin_fb_obj() returns NULL, resulting in an oops
      immediately afterwards as the (inlined) call to i915_vma_unpin_fence()
      tries to dereference it.
      
      It seems to be some race condition where the object is going away at
      shutdown time, since both times happened when shutting down the X
      server.  The call chains were different:
      
       - VT ioctl(KDSETMODE, KD_TEXT):
      
          intel_cleanup_plane_fb+0x5b/0xa0 [i915]
          drm_atomic_helper_cleanup_planes+0x6f/0x90 [drm_kms_helper]
          intel_atomic_commit_tail+0x749/0xfe0 [i915]
          intel_atomic_commit+0x3cb/0x4f0 [i915]
          drm_atomic_commit+0x4b/0x50 [drm]
          restore_fbdev_mode+0x14c/0x2a0 [drm_kms_helper]
          drm_fb_helper_restore_fbdev_mode_unlocked+0x34/0x80 [drm_kms_helper]
          drm_fb_helper_set_par+0x2d/0x60 [drm_kms_helper]
          intel_fbdev_set_par+0x18/0x70 [i915]
          fb_set_var+0x236/0x460
          fbcon_blank+0x30f/0x350
          do_unblank_screen+0xd2/0x1a0
          vt_ioctl+0x507/0x12a0
          tty_ioctl+0x355/0xc30
          do_vfs_ioctl+0xa3/0x5e0
          SyS_ioctl+0x79/0x90
          entry_SYSCALL_64_fastpath+0x13/0x94
      
       - i915 unpin_work workqueue:
      
          intel_unpin_work_fn+0x58/0x140 [i915]
          process_one_work+0x1f1/0x480
          worker_thread+0x48/0x4d0
          kthread+0x101/0x140
      
      and this patch purely papers over the issue by adding a NULL pointer
      check and a WARN_ON_ONCE() to avoid the oops that would then generally
      make the machine unresponsive.
      
      Other callers of i915_gem_object_to_ggtt() seem to also check for the
      returned pointer being NULL and warn about it, so this clearly has
      happened before in other places.
      
      [ Reported it originally to the i915 developers on Jan 8, applying the
        ugly workaround on my own now after triggering the problem for the
        second time with no feedback.
      
        This is likely to be the same bug reported as
      
           https://bugs.freedesktop.org/show_bug.cgi?id=98829
           https://bugs.freedesktop.org/show_bug.cgi?id=99134
      
        which has a patch for the underlying problem, but it hasn't gotten to
        me, so I'm applying the workaround. ]
      
      Cc: Daniel Vetter <daniel.vetter@intel.com>
      Cc: Jani Nikula <jani.nikula@linux.intel.com>
      Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
      Cc: Chris Wilson <chris@chris-wilson.co.uk>
      Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
      Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
      Cc: Imre Deak <imre.deak@intel.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      39cb2c9a
    • Linus Torvalds's avatar
      Merge branch 'parisc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux · 2c5d9555
      Linus Torvalds authored
      Pull two parisc fixes from Helge Deller:
       "One fix to avoid usage of BITS_PER_LONG in user-space exported swab.h
        header which breaks compiling qemu, and one trivial fix for printk
        continuation in the parisc parport driver"
      
      * 'parisc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
        parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
        parisc, parport_gsc: Fixes for printk continuation lines
      2c5d9555
  6. 28 Jan, 2017 7 commits
  7. 27 Jan, 2017 6 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 1b1bc42c
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) GTP fixes from Andreas Schultz (missing genl module alias, clear IP
          DF on transmit).
      
       2) Netfilter needs to reflect the fwmark when sending resets, from Pau
          Espin Pedrol.
      
       3) nftable dump OOPS fix from Liping Zhang.
      
       4) Fix erroneous setting of VIRTIO_NET_HDR_F_DATA_VALID on transmit,
          from Rolf Neugebauer.
      
       5) Fix build error of ipt_CLUSTERIP when procfs is disabled, from Arnd
          Bergmann.
      
       6) Fix regression in handling of NETIF_F_SG in harmonize_features(),
          from Eric Dumazet.
      
       7) Fix RTNL deadlock wrt. lwtunnel module loading, from David Ahern.
      
       8) tcp_fastopen_create_child() needs to setup tp->max_window, from
          Alexey Kodanev.
      
       9) Missing kmemdup() failure check in ipv6 segment routing code, from
          Eric Dumazet.
      
      10) Don't execute unix_bind() under the bindlock, otherwise we deadlock
          with splice. From WANG Cong.
      
      11) ip6_tnl_parse_tlv_enc_lim() potentially reallocates the skb buffer,
          therefore callers must reload cached header pointers into that skb.
          Fix from Eric Dumazet.
      
      12) Fix various bugs in legacy IRQ fallback handling in alx driver, from
          Tobias Regnery.
      
      13) Do not allow lwtunnel drivers to be unloaded while they are
          referenced by active instances, from Robert Shearman.
      
      14) Fix truncated PHY LED trigger names, from Geert Uytterhoeven.
      
      15) Fix a few regressions from virtio_net XDP support, from John
          Fastabend and Jakub Kicinski.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (102 commits)
        ISDN: eicon: silence misleading array-bounds warning
        net: phy: micrel: add support for KSZ8795
        gtp: fix cross netns recv on gtp socket
        gtp: clear DF bit on GTP packet tx
        gtp: add genl family modules alias
        tcp: don't annotate mark on control socket from tcp_v6_send_response()
        ravb: unmap descriptors when freeing rings
        virtio_net: reject XDP programs using header adjustment
        virtio_net: use dev_kfree_skb for small buffer XDP receive
        r8152: check rx after napi is enabled
        r8152: re-schedule napi for tx
        r8152: avoid start_xmit to schedule napi when napi is disabled
        r8152: avoid start_xmit to call napi_schedule during autosuspend
        net: dsa: Bring back device detaching in dsa_slave_suspend()
        net: phy: leds: Fix truncated LED trigger names
        net: phy: leds: Break dependency of phy.h on phy_led_triggers.h
        net: phy: leds: Clear phy_num_led_triggers on failure to avoid crash
        net-next: ethernet: mediatek: change the compatible string
        Documentation: devicetree: change the mediatek ethernet compatible string
        bnxt_en: Fix RTNL lock usage on bnxt_get_port_module_status().
        ...
      1b1bc42c
    • Linus Torvalds's avatar
      Merge tag 'xfs-for-linus-4.10-rc6-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 3365135d
      Linus Torvalds authored
      Pull xfs uodates from Darrick Wong:
       "I have some more fixes this week: better input validation, corruption
        avoidance, build fixes, memory leak fixes, and a couple from Christoph
        to avoid an ENOSPC failure.
      
        Summary:
         - Fix race conditions in the CoW code
         - Fix some incorrect input validation checks
         - Avoid crashing fs by running out of space when freeing inodes
         - Fix toctou race wrt whether or not an inode has an attr
         - Fix build error on arm
         - Fix page refcount corruption when readahead fails
         - Don't corrupt userspace in the bmap ioctl"
      
      * tag 'xfs-for-linus-4.10-rc6-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
        xfs: prevent quotacheck from overloading inode lru
        xfs: fix bmv_count confusion w/ shared extents
        xfs: clear _XBF_PAGES from buffers when readahead page
        xfs: extsize hints are not unlikely in xfs_bmap_btalloc
        xfs: remove racy hasattr check from attr ops
        xfs: use per-AG reservations for the finobt
        xfs: only update mount/resv fields on success in __xfs_ag_resv_init
        xfs: verify dirblocklog correctly
        xfs: fix COW writeback race
      3365135d
    • Linus Torvalds's avatar
      Merge branch 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs · 59063744
      Linus Torvalds authored
      Pull btrfs updates from Chris Mason:
       "Some fixes that we've collected from the list.
      
        We still have one more pending to nail down a regression in lzo
        compression, but I wanted to get this batch out the door"
      
      * 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
        Btrfs: remove ->{get, set}_acl() from btrfs_dir_ro_inode_operations
        Btrfs: disable xattr operations on subvolume directories
        Btrfs: remove old tree_root case in btrfs_read_locked_inode()
        Btrfs: fix truncate down when no_holes feature is enabled
        Btrfs: Fix deadlock between direct IO and fast fsync
        btrfs: fix false enospc error when truncating heavily reflinked file
      59063744
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 2fb78e89
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A set of fixes for this series. This contains:
      
         - Set of fixes for the nvme target code
      
         - A revert of patch from this merge window, causing a regression with
           WRITE_SAME on iSCSI targets at least.
      
         - A fix for a use-after-free in the new O_DIRECT bdev code.
      
         - Two fixes for the xen-blkfront driver"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        Revert "sd: remove __data_len hack for WRITE SAME"
        nvme-fc: use blk_rq_nr_phys_segments
        nvmet-rdma: Fix missing dma sync to nvme data structures
        nvmet: Call fatal_error from keep-alive timout expiration
        nvmet: cancel fatal error and flush async work before free controller
        nvmet: delete controllers deletion upon subsystem release
        nvmet_fc: correct logic in disconnect queue LS handling
        block: fix use after free in __blkdev_direct_IO
        xen-blkfront: correct maximum segment accounting
        xen-blkfront: feature flags handling adjustments
      2fb78e89
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma · dd3b9f25
      Linus Torvalds authored
      Pull rdma fixes from Doug Ledford:
       "Second round of -rc fixes for 4.10.
      
        This -rc cycle has been slow for the rdma subsystem. I had already
        sent you the first batch before the Holiday break. After that, we kept
        only getting a few here or there. Up until this week, when I got a
        drop of 13 to one driver (qedr). So, here's the -rc patches I have. I
        currently have none held in reserve, so unless something new comes in,
        this is it until the next merge window opens.
      
        Summary:
      
         - series of iw_cxgb4 fixes to make it work with the drain cq API
      
         - one or two patches each to: srp, iser, cxgb3, vmw_pvrdma, umem,
           rxe, and ipoib
      
         - one big series (13 patches) for the new qedr driver"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (27 commits)
        RDMA/cma: Fix unknown symbol when CONFIG_IPV6 is not enabled
        IB/rxe: Prevent from completer to operate on non valid QP
        IB/rxe: Fix rxe dev insertion to rxe_dev_list
        IB/umem: Release pid in error and ODP flow
        RDMA/qedr: Dispatch port active event from qedr_add
        RDMA/qedr: Fix and simplify memory leak in PD alloc
        RDMA/qedr: Fix RDMA CM loopback
        RDMA/qedr: Fix formatting
        RDMA/qedr: Mark three functions as static
        RDMA/qedr: Don't reset QP when queues aren't flushed
        RDMA/qedr: Don't spam dmesg if QP is in error state
        RDMA/qedr: Remove CQ spinlock from CM completion handlers
        RDMA/qedr: Return max inline data in QP query result
        RDMA/qedr: Return success when not changing QP state
        RDMA/qedr: Add uapi header qedr-abi.h
        RDMA/qedr: Fix MTU returned from QP query
        RDMA/core: Add the function ib_mtu_int_to_enum
        IB/vmw_pvrdma: Fix incorrect cleanup on pvrdma_pci_probe error path
        IB/vmw_pvrdma: Don't leak info from alloc_ucontext
        IB/cxgb3: fix misspelling in header guard
        ...
      dd3b9f25
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 69978aa0
      Linus Torvalds authored
      Pull s390 fixes from Martin Schwidefsky:
       "Another two bug fixes:
      
         - ptrace partial write information leak
      
         - a guest page hinting regression introduced with v4.6"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        s390/mm: Fix cmma unused transfer from pgste into pte
        s390/ptrace: Preserve previous registers for short regset write
      69978aa0