1. 29 Jul, 2016 19 commits
    • Miklos Szeredi's avatar
      ovl: fix warning · 656189d2
      Miklos Szeredi authored
      There's a superfluous newline in the warning message in ovl_d_real().
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      656189d2
    • Wei Yongjun's avatar
      ovl: remove duplicated include from super.c · 5f215013
      Wei Yongjun authored
      Remove duplicated include.
      Signed-off-by: default avatarWei Yongjun <yongjun_wei@trendmicro.com.cn>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      5f215013
    • Vivek Goyal's avatar
      ovl: append MAY_READ when diluting write checks · 500cac3c
      Vivek Goyal authored
      Right now we remove MAY_WRITE/MAY_APPEND bits from mask if realfile is on
      lower/. This is done as files on lower will never be written and will be
      copied up. But to copy up a file, mounter should have MAY_READ permission
      otherwise copy up will fail. So set MAY_READ in mask when MAY_WRITE is
      reset.
      
      Dan Walsh noticed this when he did access(lowerfile, W_OK) and it returned
      True (context mounts) but when he tried to actually write to file, it
      failed as mounter did not have permission on lower file.
      
      [SzM] don't set MAY_READ if only MAY_APPEND is set without MAY_WRITE; this
      won't trigger a copy-up.
      Reported-by: default avatarDan Walsh <dwalsh@redhat.com>
      Signed-off-by: default avatarVivek Goyal <vgoyal@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      500cac3c
    • Vivek Goyal's avatar
      ovl: dilute permission checks on lower only if not special file · e29841a0
      Vivek Goyal authored
      Right now if file is on lower/, we remove MAY_WRITE/MAY_APPEND bits from
      mask as lower/ will never be written and file will be copied up. But this
      is not true for special files. These files are not copied up and are opened
      in place. So don't dilute the checks for these types of files.
      Reported-by: default avatarDan Walsh <dwalsh@redhat.com>
      Signed-off-by: default avatarVivek Goyal <vgoyal@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      e29841a0
    • Miklos Szeredi's avatar
      ovl: fix POSIX ACL setting · d837a49b
      Miklos Szeredi authored
      Setting POSIX ACL needs special handling:
      
      1) Some permission checks are done by ->setxattr() which now uses mounter's
      creds ("ovl: do operations on underlying file system in mounter's
      context").  These permission checks need to be done with current cred as
      well.
      
      2) Setting ACL can fail for various reasons.  We do not need to copy up in
      these cases.
      
      In the mean time switch to using generic_setxattr.
      
      [Arnd Bergmann] Fix link error without POSIX ACL. posix_acl_from_xattr()
      doesn't have a 'static inline' implementation when CONFIG_FS_POSIX_ACL is
      disabled, and I could not come up with an obvious way to do it.
      
      This instead avoids the link error by defining two sets of ACL operations
      and letting the compiler drop one of the two at compile time depending
      on CONFIG_FS_POSIX_ACL. This avoids all references to the ACL code,
      also leading to smaller code.
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      d837a49b
    • Miklos Szeredi's avatar
      ovl: share inode for hard link · 51f7e52d
      Miklos Szeredi authored
      Inode attributes are copied up to overlay inode (uid, gid, mode, atime,
      mtime, ctime) so generic code using these fields works correcty.  If a hard
      link is created in overlayfs separate inodes are allocated for each link.
      If chmod/chown/etc. is performed on one of the links then the inode
      belonging to the other ones won't be updated.
      
      This patch attempts to fix this by sharing inodes for hard links.
      
      Use inode hash (with real inode pointer as a key) to make sure overlay
      inodes are shared for hard links on upper.  Hard links on lower are still
      split (which is not user observable until the copy-up happens, see
      Documentation/filesystems/overlayfs.txt under "Non-standard behavior").
      
      The inode is only inserted in the hash if it is non-directoy and upper.
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      51f7e52d
    • Miklos Szeredi's avatar
      ovl: store real inode pointer in ->i_private · 39b681f8
      Miklos Szeredi authored
      To get from overlay inode to real inode we currently use 'struct
      ovl_entry', which has lifetime connected to overlay dentry.  This is okay,
      since each overlay dentry had a new overlay inode allocated.
      
      Following patch will break that assumption, so need to leave out ovl_entry.
      This patch stores the real inode directly in i_private, with the lowest bit
      used to indicate whether the inode is upper or lower.
      
      Lifetime rules remain, using ovl_inode_real() must only be done while
      caller holds ref on overlay dentry (and hence on real dentry), or within
      RCU protected regions.
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      39b681f8
    • Miklos Szeredi's avatar
      ovl: permission: return ECHILD instead of ENOENT · a999d7e1
      Miklos Szeredi authored
      The error is due to RCU and is temporary.
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      a999d7e1
    • Miklos Szeredi's avatar
      ovl: update atime on upper · d719e8f2
      Miklos Szeredi authored
      Fix atime update logic in overlayfs.
      
      This patch adds an i_op->update_time() handler to overlayfs inodes.  This
      forwards atime updates to the upper layer only.  No atime updates are done
      on lower layers.
      
      Remove implicit atime updates to underlying files and directories with
      O_NOATIME.  Remove explicit atime update in ovl_readlink().
      
      Clear atime related mnt flags from cloned upper mount.  This means atime
      updates are controlled purely by overlayfs mount options.
      
      Reported-by: Konstantin Khlebnikov <koct9i@gmail.com> 
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      d719e8f2
    • Miklos Szeredi's avatar
      ovl: fix sgid on directory · bb0d2b8a
      Miklos Szeredi authored
      When creating directory in workdir, the group/sgid inheritance from the
      parent dir was omitted completely.  Fix this by calling inode_init_owner()
      on overlay inode and using the resulting uid/gid/mode to create the file.
      
      Unfortunately the sgid bit can be stripped off due to umask, so need to
      reset the mode in this case in workdir before moving the directory in
      place.
      Reported-by: default avatarEryu Guan <eguan@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      bb0d2b8a
    • Miklos Szeredi's avatar
      ovl: simplify permission checking · 9c630ebe
      Miklos Szeredi authored
      The fact that we always do permission checking on the overlay inode and
      clear MAY_WRITE for checking access to the lower inode allows cruft to be
      removed from ovl_permission().
      
      1) "default_permissions" option effectively did generic_permission() on the
      overlay inode with i_mode, i_uid and i_gid updated from underlying
      filesystem.  This is what we do by default now.  It did the update using
      vfs_getattr() but that's only needed if the underlying filesystem can
      change (which is not allowed).  We may later introduce a "paranoia_mode"
      that verifies that mode/uid/gid are not changed.
      
      2) splitting out the IS_RDONLY() check from inode_permission() also becomes
      unnecessary once we remove the MAY_WRITE from the lower inode check.
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      9c630ebe
    • Vivek Goyal's avatar
      ovl: do not require mounter to have MAY_WRITE on lower · 754f8cb7
      Vivek Goyal authored
      Now we have two levels of checks in ovl_permission(). overlay inode
      is checked with the creds of task while underlying inode is checked
      with the creds of mounter.
      
      Looks like mounter does not have to have WRITE access to files on lower/.
      So remove the MAY_WRITE from access mask for checks on underlying
      lower inode.
      
      This means task should still have the MAY_WRITE permission on lower
      inode and mounter is not required to have MAY_WRITE.
      
      It also solves the problem of read only NFS mounts being used as lower.
      If __inode_permission(lower_inode, MAY_WRITE) is called on read only
      NFS, it fails. By resetting MAY_WRITE, check succeeds and case of
      read only NFS shold work with overlay without having to specify any
      special mount options (default permission).
      Signed-off-by: default avatarVivek Goyal <vgoyal@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      754f8cb7
    • Vivek Goyal's avatar
      ovl: do operations on underlying file system in mounter's context · 1175b6b8
      Vivek Goyal authored
      Given we are now doing checks both on overlay inode as well underlying
      inode, we should be able to do checks and operations on underlying file
      system using mounter's context.
      
      So modify all operations to do checks/operations on underlying dentry/inode
      in the context of mounter.
      Signed-off-by: default avatarVivek Goyal <vgoyal@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      1175b6b8
    • Vivek Goyal's avatar
      ovl: modify ovl_permission() to do checks on two inodes · c0ca3d70
      Vivek Goyal authored
      Right now ovl_permission() calls __inode_permission(realinode), to do
      permission checks on real inode and no checks are done on overlay inode.
      
      Modify it to do checks both on overlay inode as well as underlying inode.
      Checks on overlay inode will be done with the creds of calling task while
      checks on underlying inode will be done with the creds of mounter.
      Signed-off-by: default avatarVivek Goyal <vgoyal@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      c0ca3d70
    • Vivek Goyal's avatar
      ovl: define ->get_acl() for overlay inodes · 39a25b2b
      Vivek Goyal authored
      Now we are planning to do DAC permission checks on overlay inode
      itself. And to make it work, we will need to make sure we can get acls from
      underlying inode. So define ->get_acl() for overlay inodes and this in turn
      calls into underlying filesystem to get acls, if any.
      Signed-off-by: default avatarVivek Goyal <vgoyal@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      39a25b2b
    • Vivek Goyal's avatar
      ovl: move some common code in a function · 72e48481
      Vivek Goyal authored
      ovl_create_upper() and ovl_create_over_whiteout() seem to be sharing some
      common code which can be moved into a separate function.  No functionality
      change.
      Signed-off-by: default avatarVivek Goyal <vgoyal@redhat.com>
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      72e48481
    • Andreas Gruenbacher's avatar
      ovl: store ovl_entry in inode->i_private for all inodes · 58ed4e70
      Andreas Gruenbacher authored
      Previously this was only done for directory inodes.  Doing so for all
      inodes makes for a nice cleanup in ovl_permission at zero cost.
      
      Inodes are not shared for hard links on the overlay, so this works fine.
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      58ed4e70
    • Miklos Szeredi's avatar
      ovl: use generic_delete_inode · eead4f2d
      Miklos Szeredi authored
      No point in keeping overlay inodes around since they will never be reused.
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      eead4f2d
    • Miklos Szeredi's avatar
      ovl: check mounter creds on underlying lookup · c1b2cc1a
      Miklos Szeredi authored
      The hash salting changes meant that we can no longer reuse the hash in the
      overlay dentry to look up the underlying dentry.
      
      Instead of lookup_hash(), use lookup_one_len_unlocked() and swith to
      mounter's creds (like we do for all other operations later in the series).
      
      Now the lookup_hash() export introduced in 4.6 by 3c9fe8cd ("vfs: add
      lookup_hash() helper") is unused and can possibly be removed; its
      usefulness negated by the hash salting and the idea that mounter's creds
      should be used on operations on underlying filesystems.
      Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
      Fixes: 8387ff25 ("vfs: make the string hashes salt the hash")
      c1b2cc1a
  2. 27 Jul, 2016 1 commit
  3. 24 Jul, 2016 2 commits
  4. 23 Jul, 2016 18 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 107df032
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix memory leak in nftables, from Liping Zhang.
      
       2) Need to check result of vlan_insert_tag() in batman-adv otherwise we
          risk NULL skb derefs, from Sven Eckelmann.
      
       3) Check for dev_alloc_skb() failures in cfg80211, from Gregory
          Greenman.
      
       4) Handle properly when we have ppp_unregister_channel() happening in
          parallel with ppp_connect_channel(), from WANG Cong.
      
       5) Fix DCCP deadlock, from Eric Dumazet.
      
       6) Bail out properly in UDP if sk_filter() truncates the packet to be
          smaller than even the space that the protocol headers need.  From
          Michal Kubecek.
      
       7) Similarly for rose, dccp, and sctp, from Willem de Bruijn.
      
       8) Make TCP challenge ACKs less predictable, from Eric Dumazet.
      
       9) Fix infinite loop in bgmac_dma_tx_add() from Florian Fainelli.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (65 commits)
        packet: propagate sock_cmsg_send() error
        net/mlx5e: Fix del vxlan port command buffer memset
        packet: fix second argument of sock_tx_timestamp()
        net: switchdev: change ageing_time type to clock_t
        Update maintainer for EHEA driver.
        net/mlx4_en: Add resilience in low memory systems
        net/mlx4_en: Move filters cleanup to a proper location
        sctp: load transport header after sk_filter
        net/sched/sch_htb: clamp xstats tokens to fit into 32-bit int
        net: cavium: liquidio: Avoid dma_unmap_single on uninitialized ndata
        net: nb8800: Fix SKB leak in nb8800_receive()
        et131x: Fix logical vs bitwise check in et131x_tx_timeout()
        vlan: use a valid default mtu value for vlan over macsec
        net: bgmac: Fix infinite loop in bgmac_dma_tx_add()
        mlxsw: spectrum: Prevent invalid ingress buffer mapping
        mlxsw: spectrum: Prevent overwrite of DCB capability fields
        mlxsw: spectrum: Don't emit errors when PFC is disabled
        mlxsw: spectrum: Indicate support for autonegotiation
        mlxsw: spectrum: Force link training according to admin state
        r8152: add MODULE_VERSION
        ...
      107df032
    • Linus Torvalds's avatar
      Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs · 88083e98
      Linus Torvalds authored
      Pull overlayfs fixes from Miklos Szeredi:
       "This contains a fix for a potential crash/corruption issue and another
        where the suid/sgid bits weren't cleared on write"
      
      * 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
        ovl: verify upper dentry in ovl_remove_and_whiteout()
        ovl: Copy up underlying inode's ->i_mode to overlay inode
        ovl: handle ATTR_KILL*
      88083e98
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · b1386ced
      Linus Torvalds authored
      Merge misc fixes from Andrew Morton:
       "Five fixes"
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>:
        pps: do not crash when failed to register
        tools/vm/slabinfo: fix an unintentional printf
        testing/radix-tree: fix a macro expansion bug
        radix-tree: fix radix_tree_iter_retry() for tagged iterators.
        mm: memcontrol: fix cgroup creation failure after many small jobs
      b1386ced
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-for-v4.7-rc8-intel-kbl' of git://people.freedesktop.org/~airlied/linux · d15ae814
      Linus Torvalds authored
      Pull intel kabylake drm fixes from Dave Airlie:
       "As mentioned Intel has gathered all the Kabylake fixes from -next,
        which we've enabled in 4.7 for the first time, these are pretty much
        limited in scope to only affects kabylake, which is hw that isn't
        shipping yet.  So I'm mostly okay with it going in now.
      
        If we don't land this, it might be a good idea to disable kabylake
        support in 4.7 before we ship"
      
      * tag 'drm-fixes-for-v4.7-rc8-intel-kbl' of git://people.freedesktop.org/~airlied/linux: (28 commits)
        drm/i915/kbl: Introduce the first official DMC for Kabylake.
        drm/i915: Introduce Kabypoint PCH for Kabylake H/DT.
        drm/i915/gen9: implement WaConextSwitchWithConcurrentTLBInvalidate
        drm/i915/gen9: Add WaFbcHighMemBwCorruptionAvoidance
        drm/i195/fbc: Add WaFbcNukeOnHostModify
        drm/i915/gen9: Add WaFbcWakeMemOn
        drm/i915/gen9: Add WaFbcTurnOffFbcWatermark
        drm/i915/kbl: Add WaClearSlmSpaceAtContextSwitch
        drm/i915/gen9: Add WaEnableChickenDCPR
        drm/i915/kbl: Add WaDisableSbeCacheDispatchPortSharing
        drm/i915/kbl: Add WaDisableGafsUnitClkGating
        drm/i915/kbl: Add WaForGAMHang
        drm/i915: Add WaInsertDummyPushConstP for bxt and kbl
        drm/i915/kbl: Add WaDisableDynamicCreditSharing
        drm/i915/kbl: Add WaDisableGamClockGating
        drm/i915/gen9: Enable must set chicken bits in config0 reg
        drm/i915/kbl: Add WaDisableLSQCROPERFforOCL
        drm/i915/kbl: Add WaDisableSDEUnitClockGating
        drm/i915/kbl: Add WaDisableFenceDestinationToSLM for A0
        drm/i915/kbl: Add WaEnableGapsTsvCreditFix
        ...
      d15ae814
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-for-v4.7-rc8-intel' of git://people.freedesktop.org/~airlied/linux · 3f2625d7
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Two i915 regression fixes.
      
        Intel have submitted some Kabylake fixes I'll send separately, since
        this is the first kernel with kabylake support and they don't go much
        outside that area I think they should be fine"
      
      * tag 'drm-fixes-for-v4.7-rc8-intel' of git://people.freedesktop.org/~airlied/linux:
        drm/i915: add missing condition for committing planes on crtc
        drm/i915: Treat eDP as always connected, again
      3f2625d7
    • Linus Torvalds's avatar
      Merge tag 'm68k-for-v4.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k · 23218843
      Linus Torvalds authored
      Pull m68k upddates from Geert Uytterhoeven:
       - assorted spelling fixes
       - defconfig updates
      
      * tag 'm68k-for-v4.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
        m68k/defconfig: Update defconfigs for v4.7-rc2
        m68k: Assorted spelling fixes
      23218843
    • Linus Torvalds's avatar
      Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · 7825e0c4
      Linus Torvalds authored
      Pull ARM SoC fixes from Olof Johansson:
       "A handful of fixes before final release:
      
        Marvell Armada:
         - One to fix a typo in the devicetree specifying memory ranges for
           the crypto engine
         - Two to deal with marking PCI and device-memory as strongly ordered
           to avoid hardware deadlocks, in particular when enabling above
           crypto driver.
         - Compile fix for PM
      
        Allwinner:
         - DT clock fixes to deal with u-boot-enabled framebuffer (simplefb).
         - Make R8 (C.H.I.P. SoC) inherit system compatibility from A13 to
           make clocks register proper.
      
        Tegra:
         - Fix SD card voltage setting on the Tegra3 Beaver dev board
      
        Misc:
         - Two maintainers updates for STM32 and STi platforms"
      
      * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
        ARM: tegra: beaver: Allow SD card voltage to be changed
        MAINTAINERS: update STi maintainer list
        MAINTAINERS: update STM32 maintainers list
        ARM: mvebu: compile pm code conditionally
        ARM: dts: sun7i: Fix pll3x2 and pll7x2 not having a parent clock
        ARM: dts: sunxi: Add pll3 to simplefb nodes clocks lists
        ARM: dts: armada-38x: fix MBUS_ID for crypto SRAM on Armada 385 Linksys
        ARM: mvebu: map PCI I/O regions strongly ordered
        ARM: mvebu: fix HW I/O coherency related deadlocks
        ARM: sunxi/dt: make the CHIP inherit from allwinner,sun5i-a13
      7825e0c4
    • Linus Torvalds's avatar
      Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · 48d4ca56
      Linus Torvalds authored
      Pull crypto fixes from Herbert Xu:
       "This fixes a sporadic build failure in the qat driver as well as a
        memory corruption bug in rsa-pkcs1pad"
      
      * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        crypto: rsa-pkcs1pad - fix rsa-pkcs1pad request struct
        crypto: qat - make qat_asym_algs.o depend on asn1 headers
      48d4ca56
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security · 897473fc
      Linus Torvalds authored
      Pull key handling fixes from James Morris:
       "Quoting David Howells:
      
        Here are three miscellaneous fixes:
      
        (1) Fix a panic in some debugging code in PKCS#7.  This can only
            happen by explicitly inserting a #define DEBUG into the code.
      
        (2) Fix the calculation of the digest length in the PE file parser.
            This causes a failure where there should be a success.
      
        (3) Fix the case where an X.509 cert can be added as an asymmetric key
            to a trusted keyring with no trust restriction if no AKID is
            supplied.
      
        Bugs (1) and (2) aren't particularly problematic, but (3) allows a
        security check to be bypassed.  Happily, this is a recent regression
        and never made it into a released kernel"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
        KEYS: Fix for erroneous trust of incorrectly signed X.509 certs
        pefile: Fix the failure of calculation for digest
        PKCS#7: Fix panic when referring to the empty AKID when DEBUG defined
      897473fc
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · 3aa536d9
      Linus Torvalds authored
      Pull input fixes from Dmitry Torokhov:
       "A few more fixes for the input subsystem:
      
         - restore naming for tsc2005 touchscreens as some userspace match on it
         - fix out of bound access in legacy keyboard driver
         - fixup in RMI4 driver
      
        Everything is tagged for stable as well"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Input: tsc200x - report proper input_dev name
        tty/vt/keyboard: fix OOB access in do_compute_shiftstate()
        Input: synaptics-rmi4 - fix maximum size check for F12 control register 8
      3aa536d9
    • Linus Torvalds's avatar
      Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · f1894d83
      Linus Torvalds authored
      Pull libnvdimm fix from Dan Williams:
       "This contains a regression fix for a problem that was introduced in
        v4.7-rc6.
      
        In 4.7-rc1 we introduced auto-probing for the ACPI DSM (device-
        specific-method) format that the platform firmware implements for
        nvdimm devices.  We initially fixed a regression in probing the QEMU
        DSM implementation by making acpi_check_dsm() tolerant of the way QEMU
        reports the "0 DSMs supported" condition.
      
        However, that broke HPE platforms since that tolerance caused the
        driver to mistakenly match the 1-zero-byte response those platforms
        give to "unknown" commands.  Instead, we simply make the driver
        tolerant of not finding any supported DSMs.  This has been tested to
        work with both QEMU and HPE platforms.
      
        This commit has appeared in a -next release with no reported issues"
      
      * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
        nfit: make DIMM DSMs optional
      f1894d83
    • Linus Torvalds's avatar
      Merge tag 'gpio-v4.7-6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio · ee62f09b
      Linus Torvalds authored
      Pull GPIO fix from Linus Walleij:
       "Compile problem fix for Tegra,
      
        Sorry to send this in the last minute but Ingo says this build failure
        is very prominent so I'm not going to wait for v4.7 before sending it.
      
        It is a case of COMPILE_TEST causing more problems than it solves and
        I'm already swearing about me shooting myself in the foot with that
        gun :("
      
      * tag 'gpio-v4.7-6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
        gpio: tegra: don't auto-enable for COMPILE_TEST
      ee62f09b
    • Linus Torvalds's avatar
      Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux · 62cd69d5
      Linus Torvalds authored
      Pull clk fixes from Michael Turquette:
       "Fix a bug in the at91 clk driver, two compile time warnings in sunxi
        clk drivers, and one bug in a sunxi clk driver introduced in the 4.7
        merge window"
      
      * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
        clk: at91: fix clk_programmable_set_parent()
        clk: sunxi: remove unused variable
        clk: sunxi: display: Add per-clock flags
        clk: sunxi: tcon-ch1: Do not return a negative error in get_parent
      62cd69d5
    • Linus Torvalds's avatar
      Merge branch 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata · a933f80d
      Linus Torvalds authored
      Pull libata fix from Tejun Heo:
       "Another fallout from max_sectors bump a couple years ago.  The lite-on
        optical drive times out on large requests"
      
      * 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
        libata: LITE-ON CX1-JB256-HP needs lower max_sectors
      a933f80d
    • Linus Torvalds's avatar
      Merge tag 'mmc-v4.7-rc7' of git://git.linaro.org/people/ulf.hansson/mmc · ea4b3cfa
      Linus Torvalds authored
      Pull MMC fixes from Ulf Hansson:
       "Here are a few late mmc fixes intended for v4.7 final.
      
        MMC core:
         - Fix eMMC packed command header endianness
         - Fix free of uninitialized buffer for mmc ioctl
      
        MMC host:
         - pxamci: Fix potential oops in ->probe()"
      
      * tag 'mmc-v4.7-rc7' of git://git.linaro.org/people/ulf.hansson/mmc:
        mmc: pxamci: fix potential oops
        mmc: block: fix packed command header endianness
        mmc: block: fix free of uninitialized 'idata->buf'
      ea4b3cfa
    • Linus Torvalds's avatar
      Merge tag 'sound-4.7-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · b6cbecae
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "No surprise, just a few small fixes: a couple of changes are seen in
        the core part, and both of them are rather for unusual error paths.
      
        The rest are the regular HD-audio fixes and one USB-audio regression
        fix"
      
      * tag 'sound-4.7-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: usb-audio: Fix quirks code is not called
        ALSA: hda: add AMD Stoney PCI ID with proper driver caps
        ALSA: hda - fix use-after-free after module unload
        ALSA: pcm: Free chmap at PCM free callback, too
        ALSA: ctl: Stop notification after disconnection
        ALSA: hda/realtek - add new pin definition in alc225 pin quirk table
      b6cbecae
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · ff8d6fac
      Linus Torvalds authored
      Pull NVMe fix from Jens Axboe:
       "Late addition here, it's basically a revert of a patch that was added
        in this merge window, but has proven to cause problems.
      
        This is swapping out the RCU based namespace protection with a good
        old mutex instead"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        nvme: Remove RCU namespace protection
      ff8d6fac
    • Jiri Slaby's avatar
      pps: do not crash when failed to register · 368301f2
      Jiri Slaby authored
      With this command sequence:
      
        modprobe plip
        modprobe pps_parport
        rmmod pps_parport
      
      the partport_pps modules causes this crash:
      
        BUG: unable to handle kernel NULL pointer dereference at (null)
        IP: parport_detach+0x1d/0x60 [pps_parport]
        Oops: 0000 [#1] SMP
        ...
        Call Trace:
          parport_unregister_driver+0x65/0xc0 [parport]
          SyS_delete_module+0x187/0x210
      
      The sequence that builds up to this is:
      
       1) plip is loaded and takes the parport device for exclusive use:
      
          plip0: Parallel port at 0x378, using IRQ 7.
      
       2) pps_parport then fails to grab the device:
      
          pps_parport: parallel port PPS client
          parport0: cannot grant exclusive access for device pps_parport
          pps_parport: couldn't register with parport0
      
       3) rmmod of pps_parport is then killed because it tries to access
          pardev->name, but pardev (taken from port->cad) is NULL.
      
      So add a check for NULL in the test there too.
      
      Link: http://lkml.kernel.org/r/20160714115245.12651-1-jslaby@suse.czSigned-off-by: default avatarJiri Slaby <jslaby@suse.cz>
      Acked-by: default avatarRodolfo Giometti <giometti@enneenne.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      368301f2