1. 09 Dec, 2014 4 commits
    • Bart Van Assche's avatar
      blk-mq: Fix a race between bt_clear_tag() and bt_get() · c38d185d
      Bart Van Assche authored
      What we need is the following two guarantees:
      * Any thread that observes the effect of the test_and_set_bit() by
        __bt_get_word() also observes the preceding addition of 'current'
        to the appropriate wait list. This is guaranteed by the semantics
        of the spin_unlock() operation performed by prepare_and_wait().
        Hence the conversion of test_and_set_bit_lock() into
        test_and_set_bit().
      * The wait lists are examined by bt_clear() after the tag bit has
        been cleared. clear_bit_unlock() guarantees that any thread that
        observes that the bit has been cleared also observes the store
        operations preceding clear_bit_unlock(). However,
        clear_bit_unlock() does not prevent that the wait lists are examined
        before that the tag bit is cleared. Hence the addition of a memory
        barrier between clear_bit() and the wait list examination.
      Signed-off-by: default avatarBart Van Assche <bvanassche@acm.org>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Robert Elliott <elliott@hp.com>
      Cc: Ming Lei <ming.lei@canonical.com>
      Cc: Alexander Gordeev <agordeev@redhat.com>
      Cc: <stable@vger.kernel.org> # v3.13+
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      c38d185d
    • Bart Van Assche's avatar
      blk-mq: Avoid that __bt_get_word() wraps multiple times · 9e98e9d7
      Bart Van Assche authored
      If __bt_get_word() is called with last_tag != 0, if the first
      find_next_zero_bit() fails, if after wrap-around the
      test_and_set_bit() call fails and find_next_zero_bit() succeeds,
      if the next test_and_set_bit() call fails and subsequently
      find_next_zero_bit() does not find a zero bit, then another
      wrap-around will occur. Avoid this by introducing an additional
      local variable.
      Signed-off-by: default avatarBart Van Assche <bvanassche@acm.org>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Robert Elliott <elliott@hp.com>
      Cc: Ming Lei <ming.lei@canonical.com>
      Cc: Alexander Gordeev <agordeev@redhat.com>
      Cc: <stable@vger.kernel.org> # v3.13+
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      9e98e9d7
    • Bart Van Assche's avatar
      blk-mq: Fix a use-after-free · 45a9c9d9
      Bart Van Assche authored
      blk-mq users are allowed to free the memory request_queue.tag_set
      points at after blk_cleanup_queue() has finished but before
      blk_release_queue() has started. This can happen e.g. in the SCSI
      core. The SCSI core namely embeds the tag_set structure in a SCSI
      host structure. The SCSI host structure is freed by
      scsi_host_dev_release(). This function is called after
      blk_cleanup_queue() finished but can be called before
      blk_release_queue().
      
      This means that it is not safe to access request_queue.tag_set from
      inside blk_release_queue(). Hence remove the blk_sync_queue() call
      from blk_release_queue(). This call is not necessary - outstanding
      requests must have finished before blk_release_queue() is
      called. Additionally, move the blk_mq_free_queue() call from
      blk_release_queue() to blk_cleanup_queue() to avoid that struct
      request_queue.tag_set gets accessed after it has been freed.
      
      This patch avoids that the following kernel oops can be triggered
      when deleting a SCSI host for which scsi-mq was enabled:
      
      Call Trace:
       [<ffffffff8109a7c4>] lock_acquire+0xc4/0x270
       [<ffffffff814ce111>] mutex_lock_nested+0x61/0x380
       [<ffffffff812575f0>] blk_mq_free_queue+0x30/0x180
       [<ffffffff8124d654>] blk_release_queue+0x84/0xd0
       [<ffffffff8126c29b>] kobject_cleanup+0x7b/0x1a0
       [<ffffffff8126c140>] kobject_put+0x30/0x70
       [<ffffffff81245895>] blk_put_queue+0x15/0x20
       [<ffffffff8125c409>] disk_release+0x99/0xd0
       [<ffffffff8133d056>] device_release+0x36/0xb0
       [<ffffffff8126c29b>] kobject_cleanup+0x7b/0x1a0
       [<ffffffff8126c140>] kobject_put+0x30/0x70
       [<ffffffff8125a78a>] put_disk+0x1a/0x20
       [<ffffffff811d4cb5>] __blkdev_put+0x135/0x1b0
       [<ffffffff811d56a0>] blkdev_put+0x50/0x160
       [<ffffffff81199eb4>] kill_block_super+0x44/0x70
       [<ffffffff8119a2a4>] deactivate_locked_super+0x44/0x60
       [<ffffffff8119a87e>] deactivate_super+0x4e/0x70
       [<ffffffff811b9833>] cleanup_mnt+0x43/0x90
       [<ffffffff811b98d2>] __cleanup_mnt+0x12/0x20
       [<ffffffff8107252c>] task_work_run+0xac/0xe0
       [<ffffffff81002c01>] do_notify_resume+0x61/0xa0
       [<ffffffff814d2c58>] int_signal+0x12/0x17
      Signed-off-by: default avatarBart Van Assche <bvanassche@acm.org>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Robert Elliott <elliott@hp.com>
      Cc: Ming Lei <ming.lei@canonical.com>
      Cc: Alexander Gordeev <agordeev@redhat.com>
      Cc: <stable@vger.kernel.org> # v3.13+
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      45a9c9d9
    • Ming Lei's avatar
      blk-mq: prevent unmapped hw queue from being scheduled · 19c66e59
      Ming Lei authored
      When one hardware queue has no mapped software queues, it
      shouldn't have been scheduled. Otherwise WARNING or OOPS
      can triggered.
      
      blk_mq_hw_queue_mapped() helper is introduce for fixing
      the problem.
      Signed-off-by: default avatarMing Lei <ming.lei@canonical.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      19c66e59
  2. 08 Dec, 2014 2 commits
  3. 01 Dec, 2014 1 commit
  4. 24 Nov, 2014 4 commits
  5. 19 Nov, 2014 1 commit
  6. 17 Nov, 2014 2 commits
  7. 11 Nov, 2014 2 commits
  8. 04 Nov, 2014 2 commits
    • Tejun Heo's avatar
      writeback: fix a subtle race condition in I_DIRTY clearing · 9c6ac78e
      Tejun Heo authored
      After invoking ->dirty_inode(), __mark_inode_dirty() does smp_mb() and
      tests inode->i_state locklessly to see whether it already has all the
      necessary I_DIRTY bits set.  The comment above the barrier doesn't
      contain any useful information - memory barriers can't ensure "changes
      are seen by all cpus" by itself.
      
      And it sure enough was broken.  Please consider the following
      scenario.
      
       CPU 0					CPU 1
       -------------------------------------------------------------------------------
      
      					enters __writeback_single_inode()
      					grabs inode->i_lock
      					tests PAGECACHE_TAG_DIRTY which is clear
       enters __set_page_dirty()
       grabs mapping->tree_lock
       sets PAGECACHE_TAG_DIRTY
       releases mapping->tree_lock
       leaves __set_page_dirty()
      
       enters __mark_inode_dirty()
       smp_mb()
       sees I_DIRTY_PAGES set
       leaves __mark_inode_dirty()
      					clears I_DIRTY_PAGES
      					releases inode->i_lock
      
      Now @inode has dirty pages w/ I_DIRTY_PAGES clear.  This doesn't seem
      to lead to an immediately critical problem because requeue_inode()
      later checks PAGECACHE_TAG_DIRTY instead of I_DIRTY_PAGES when
      deciding whether the inode needs to be requeued for IO and there are
      enough unintentional memory barriers inbetween, so while the inode
      ends up with inconsistent I_DIRTY_PAGES flag, it doesn't fall off the
      IO list.
      
      The lack of explicit barrier may also theoretically affect the other
      I_DIRTY bits which deal with metadata dirtiness.  There is no
      guarantee that a strong enough barrier exists between
      I_DIRTY_[DATA]SYNC clearing and write_inode() writing out the dirtied
      inode.  Filesystem inode writeout path likely has enough stuff which
      can behave as full barrier but it's theoretically possible that the
      writeout may not see all the updates from ->dirty_inode().
      
      Fix it by adding an explicit smp_mb() after I_DIRTY clearing.  Note
      that I_DIRTY_PAGES needs a special treatment as it always needs to be
      cleared to be interlocked with the lockless test on
      __mark_inode_dirty() side.  It's cleared unconditionally and
      reinstated after smp_mb() if the mapping still has dirty pages.
      
      Also add comments explaining how and why the barriers are paired.
      
      Lightly tested.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Mikulas Patocka <mpatocka@redhat.com>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: stable@vger.kernel.org
      Reviewed-by: default avatarJan Kara <jack@suse.cz>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      9c6ac78e
    • Jan Kara's avatar
      block: Expand a bit documentation about elevator_allow_merge_fn · b8ab956c
      Jan Kara authored
      Explain that two requests can be merged without
      elevator_allow_merge_fn() being called.
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      b8ab956c
  9. 29 Oct, 2014 2 commits
    • Jens Axboe's avatar
      blk-mq: add BLK_MQ_F_DEFER_ISSUE support flag · e167dfb5
      Jens Axboe authored
      Drivers can now tell blk-mq if they take advantage of the deferred
      issue through 'last' or not. If they do, don't do queue-direct
      for sync IO. This is a preparation patch for the nvme conversion.
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      e167dfb5
    • Jens Axboe's avatar
      blk-mq: add a 'list' parameter to ->queue_rq() · 74c45052
      Jens Axboe authored
      Since we have the notion of a 'last' request in a chain, we can use
      this to have the hardware optimize the issuing of requests. Add
      a list_head parameter to queue_rq that the driver can use to
      temporarily store hw commands for issue when 'last' is true. If we
      are doing a chain of requests, pass in a NULL list for the first
      request to force issue of that immediately, then batch the remainder
      for deferred issue until the last request has been sent.
      
      Instead of adding yet another argument to the hot ->queue_rq path,
      encapsulate the passed arguments in a blk_mq_queue_data structure.
      This is passed as a constant, and has been tested as faster than
      passing 4 (or even 3) args through ->queue_rq. Update drivers for
      the new ->queue_rq() prototype. There are no functional changes
      in this patch for drivers - if they don't use the passed in list,
      then they will just queue requests individually like before.
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      74c45052
  10. 21 Oct, 2014 1 commit
    • Christoph Hellwig's avatar
      block: remove artifical max_hw_sectors cap · 34b48db6
      Christoph Hellwig authored
      Set max_sectors to the value the drivers provides as hardware limit by
      default.  Linux had proper I/O throttling for a long time and doesn't
      rely on a artifically small maximum I/O size anymore.  By not limiting
      the I/O size by default we remove an annoying tuning step required for
      most Linux installation.
      
      Note that both the user, and if absolutely required the driver can still
      impose a limit for FS requests below max_hw_sectors_kb.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      34b48db6
  11. 20 Oct, 2014 3 commits
    • Linus Torvalds's avatar
      Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 · c2661b80
      Linus Torvalds authored
      Pull ext4 updates from Ted Ts'o:
       "A large number of cleanups and bug fixes, with some (minor) journal
        optimizations"
      
      [ This got sent to me before -rc1, but was stuck in my spam folder.   - Linus ]
      
      * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (67 commits)
        ext4: check s_chksum_driver when looking for bg csum presence
        ext4: move error report out of atomic context in ext4_init_block_bitmap()
        ext4: Replace open coded mdata csum feature to helper function
        ext4: delete useless comments about ext4_move_extents
        ext4: fix reservation overflow in ext4_da_write_begin
        ext4: add ext4_iget_normal() which is to be used for dir tree lookups
        ext4: don't orphan or truncate the boot loader inode
        ext4: grab missed write_count for EXT4_IOC_SWAP_BOOT
        ext4: optimize block allocation on grow indepth
        ext4: get rid of code duplication
        ext4: fix over-defensive complaint after journal abort
        ext4: fix return value of ext4_do_update_inode
        ext4: fix mmap data corruption when blocksize < pagesize
        vfs: fix data corruption when blocksize < pagesize for mmaped data
        ext4: fold ext4_nojournal_sops into ext4_sops
        ext4: support freezing ext2 (nojournal) file systems
        ext4: fold ext4_sync_fs_nojournal() into ext4_sync_fs()
        ext4: don't check quota format when there are no quota files
        jbd2: simplify calling convention around __jbd2_journal_clean_checkpoint_list
        jbd2: avoid pointless scanning of checkpoint lists
        ...
      c2661b80
    • Linus Torvalds's avatar
      Linux 3.18-rc1 · f114040e
      Linus Torvalds authored
      f114040e
    • Linus Torvalds's avatar
      Merge tag 'arm-soc-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · 4d3639ac
      Linus Torvalds authored
      Pull ARM SoC fixes from Olof Johansson:
       "A batch of fixes that have come in during the merge window.
      
        Some of them are defconfig updates for things that have now landed,
        some errata additions and a few general scattered fixes.
      
        There's also a qcom DT update that adds support for SATA on AP148, and
        basic support for Sony Xperia Z1 and CM-QS600 platforms that seemed
        isolated enough that we could merge it even if it's late"
      
      * tag 'arm-soc-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
        MAINTAINERS: corrected bcm2835 search
        ARM: dts: Explicitly set dr_mode on exynos5420-arndale-octa
        ARM: dts: Explicitly set dr_mode on exynos Peach boards
        ARM: dts: qcom: add CM-QS600 board
        ARM: dts: qcom: Add initial DTS file for Sony Xperia Z1 phone
        ARM: dts: qcom: Add SATA support on IPQ8064/AP148
        MAINTAINERS: Update Santosh Shilimkar's email id
        ARM: sunxi_defconfig: enable CONFIG_REGULATOR
        ARM: dts: Disable smc91x on n900 until bootloader dependency is removed
        ARM: omap2plus_defconfig: Enable ARM erratum 430973 for omap3
        ARM: exynos_defconfig: enable USB gadget support
        ARM: exynos_defconfig: Enable Maxim 77693 and I2C GPIO drivers
        ARM: mm: Fix ifdef around cpu_*_do_[suspend, resume] ops
        ARM: EXYNOS: Fix build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=n
        ARM: SAMSUNG: Restore Samsung PM Debug functionality
        ARM: dts: Fix pull setting in sd4_width8 pin group for exynos4x12
        ARM: exynos_defconfig: Enable SBS battery support
        ARM: exynos_defconfig: Enable Control Groups support
        ARM: exynos_defconfig: Enable Atmel maXTouch support
        ARM: exynos_defconfig: Enable MAX77802
      4d3639ac
  12. 19 Oct, 2014 16 commits
    • Linus Torvalds's avatar
      Merge git://git.infradead.org/users/eparis/audit · ab074ade
      Linus Torvalds authored
      Pull audit updates from Eric Paris:
       "So this change across a whole bunch of arches really solves one basic
        problem.  We want to audit when seccomp is killing a process.  seccomp
        hooks in before the audit syscall entry code.  audit_syscall_entry
        took as an argument the arch of the given syscall.  Since the arch is
        part of what makes a syscall number meaningful it's an important part
        of the record, but it isn't available when seccomp shoots the
        syscall...
      
        For most arch's we have a better way to get the arch (syscall_get_arch)
        So the solution was two fold: Implement syscall_get_arch() everywhere
        there is audit which didn't have it.  Use syscall_get_arch() in the
        seccomp audit code.  Having syscall_get_arch() everywhere meant it was
        a useless flag on the stack and we could get rid of it for the typical
        syscall entry.
      
        The other changes inside the audit system aren't grand, fixed some
        records that had invalid spaces.  Better locking around the task comm
        field.  Removing some dead functions and structs.  Make some things
        static.  Really minor stuff"
      
      * git://git.infradead.org/users/eparis/audit: (31 commits)
        audit: rename audit_log_remove_rule to disambiguate for trees
        audit: cull redundancy in audit_rule_change
        audit: WARN if audit_rule_change called illegally
        audit: put rule existence check in canonical order
        next: openrisc: Fix build
        audit: get comm using lock to avoid race in string printing
        audit: remove open_arg() function that is never used
        audit: correct AUDIT_GET_FEATURE return message type
        audit: set nlmsg_len for multicast messages.
        audit: use union for audit_field values since they are mutually exclusive
        audit: invalid op= values for rules
        audit: use atomic_t to simplify audit_serial()
        kernel/audit.c: use ARRAY_SIZE instead of sizeof/sizeof[0]
        audit: reduce scope of audit_log_fcaps
        audit: reduce scope of audit_net_id
        audit: arm64: Remove the audit arch argument to audit_syscall_entry
        arm64: audit: Add audit hook in syscall_trace_enter/exit()
        audit: x86: drop arch from __audit_syscall_entry() interface
        sparc: implement is_32bit_task
        sparc: properly conditionalize use of TIF_32BIT
        ...
      ab074ade
    • Olof Johansson's avatar
      Merge tag 'qcom-dt-for-3.18-3' of... · 57764512
      Olof Johansson authored
      Merge tag 'qcom-dt-for-3.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom into fixes
      
      Merge "qcom DT changes for v3.18-3" from Kumar Gala:
      
      Qualcomm ARM Based Device Tree Updates for v3.18-3
      
      * Added Board support for CM-QS600 and Sony Xperia Z1 phone
      * Added SATA support on IPQ8064/AP148
      
      * tag 'qcom-dt-for-3.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom:
        ARM: dts: qcom: add CM-QS600 board
        ARM: dts: qcom: Add initial DTS file for Sony Xperia Z1 phone
        ARM: dts: qcom: Add SATA support on IPQ8064/AP148
      57764512
    • Olof Johansson's avatar
      Merge tag 'samsung-fixes-2' of... · e29c6486
      Olof Johansson authored
      Merge tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
      
      Pull more fixes from Kukjin Kim:
      
      2nd Samsung fixes for v3.18
      - Explicitly set dr_mode on exynos5800-peach-pi, exynos5420-peach-pit
        and exynos5420-arndale-octa boards, because the USB dwc3 controller
        will not work properly without dr_mode as host on above boards if
        the USB host and gadget are enabled in kernel configuration both.
      
      * tag 'samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
        ARM: dts: Explicitly set dr_mode on exynos5420-arndale-octa
        ARM: dts: Explicitly set dr_mode on exynos Peach boards
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      e29c6486
    • Scott Branden's avatar
      MAINTAINERS: corrected bcm2835 search · 9209bec4
      Scott Branden authored
      Corrected bcm2835 maintainer info by using N: to specify any files with
      bcm2835 in are directed to the proper maintainer.
      Also corrected minor mispelling of ARCHITECTURE in 2 comment locations.
      Signed-off-by: default avatarScott Branden <sbranden@broadcom.com>
      Signed-off-by: Stephen Warren's avatarStephen Warren <swarren@wwwdotorg.org>
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      9209bec4
    • Linus Torvalds's avatar
      Merge tag 'ntb-3.18' of git://github.com/jonmason/ntb · 61ed53de
      Linus Torvalds authored
      Pull ntb (non-transparent bridge) updates from Jon Mason:
       "Add support for Haswell NTB split BARs, a debugfs entry for basic
        debugging info, and some code clean-ups"
      
      * tag 'ntb-3.18' of git://github.com/jonmason/ntb:
        ntb: Adding split BAR support for Haswell platforms
        ntb: use errata flag set via DID to implement workaround
        ntb: conslidate reading of PPD to move platform detection earlier
        ntb: move platform detection to separate function
        NTB: debugfs device entry
      61ed53de
    • Linus Torvalds's avatar
      Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux · 278f1d07
      Linus Torvalds authored
      Pull i2c updates from Wolfram Sang:
       "Highlights from the I2C subsystem for 3.18:
      
         - new drivers for Axxia AM55xx, and Hisilicon hix5hd2 SoC.
      
         - designware driver gained AMD support, exynos gained exynos7 support
      
        The rest is usual driver stuff.  Hopefully no lowlights this time"
      
      * 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
        i2c: i801: Add Device IDs for Intel Sunrise Point PCH
        i2c: hix5hd2: add i2c controller driver
        i2c-imx: Disable the clock on probe failure
        i2c: designware: Add support for AMD I2C controller
        i2c: designware: Rework probe() to get clock a bit later
        i2c: designware: Default to fast mode in case of ACPI
        i2c: axxia: Add I2C driver for AXM55xx
        i2c: exynos: add support for HSI2C module on Exynos7
        i2c: mxs: detect No Slave Ack on SELECT in PIO mode
        i2c: cros_ec: Remove EC_I2C_FLAG_10BIT
        i2c: cros-ec-tunnel: Add of match table
        i2c: rcar: remove sign-compare flaw
        i2c: ismt: Use minimum descriptor size
        i2c: imx: Add arbitration lost check
        i2c: rk3x: Remove unlikely() annotations
        i2c: rcar: check for no IRQ in rcar_i2c_irq()
        i2c: rcar: make rcar_i2c_prepare_msg() *void*
        i2c: rcar: simplify check for last message
        i2c: designware: add support of platform data to set I2C mode
        i2c: designware: add support of I2C standard mode
      278f1d07
    • Linus Torvalds's avatar
      Merge tag 'sound-fix-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · d590c6cd
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "Here are a collection of small fixes after 3.18 merge.
      
        The urgent one is the fix for kernel panics with linked PCM substream
        triggered by the recent nonatomic PCM ops support.  Other two fixes
        (emu10k1 and bebob) are stable fixes, and one easy PCI ID addition for
        a new Intel HD-audio controller"
      
      * tag 'sound-fix-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: hda_intel: Add Device IDs for Intel Sunrise Point PCH
        ALSA: emu10k1: Fix deadlock in synth voice lookup
        ALSA: pcm: Fix referred substream in snd_pcm_action_group() unlock loop
        ALSA: bebob: Fix failure to detect source of clock for Terratec Phase 88
      d590c6cd
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · fb378df5
      Linus Torvalds authored
      Pull second round of input updates from Dmitry Torokhov:
       "Mostly simple bug fixes, although we do have one brand new driver for
        Microchip AR1021 i2c touchscreen.
      
        Also there is the change to stop trying to use i8042 active
        multiplexing by default (it is still possible to activate it via
        i8042.nomux=0 on boxes that implement it)"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Input: xpad - add Thrustmaster as Xbox 360 controller vendor
        Input: xpad - add USB ID for Thrustmaster Ferrari 458 Racing Wheel
        Input: max77693-haptic - fix state check in imax77693_haptic_disable()
        Input: xen-kbdfront - free grant table entry in xenkbd_disconnect_backend
        Input: alps - fix v4 button press recognition
        Input: i8042 - disable active multiplexing by default
        Input: i8042 - add noloop quirk for Asus X750LN
        Input: synaptics - gate forcepad support by DMI check
        Input: Add Microchip AR1021 i2c touchscreen
        Input: cros_ec_keyb - add of match table
        Input: serio - avoid negative serio device numbers
        Input: avoid negative input device numbers
        Input: automatically set EV_ABS bit in input_set_abs_params
        Input: adp5588-keys - cancel workqueue in failure path
        Input: opencores-kbd - switch to using managed resources
        Input: evdev - fix EVIOCG{type} ioctl
      fb378df5
    • Linus Torvalds's avatar
      Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband · 2eb7f910
      Linus Torvalds authored
      Pull infiniband/RDMA updates from Roland Dreier:
       - large set of iSER initiator improvements
       - hardware driver fixes for cxgb4, mlx5 and ocrdma
       - small fixes to core midlayer
      
      * tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (47 commits)
        RDMA/cxgb4: Fix ntuple calculation for ipv6 and remove duplicate line
        RDMA/cxgb4: Add missing neigh_release in find_route
        RDMA/cxgb4: Take IPv6 into account for best_mtu and set_emss
        RDMA/cxgb4: Make c4iw_wr_log_size_order static
        IB/core: Fix XRC race condition in ib_uverbs_open_qp
        IB/core: Clear AH attr variable to prevent garbage data
        RDMA/ocrdma: Save the bit environment, spare unncessary parenthesis
        RDMA/ocrdma: The kernel has a perfectly good BIT() macro - use it
        RDMA/ocrdma: Don't memset() buffers we just allocated with kzalloc()
        RDMA/ocrdma: Remove a unused-label warning
        RDMA/ocrdma: Convert kernel VA to PA for mmap in user
        RDMA/ocrdma: Get vlan tag from ib_qp_attrs
        RDMA/ocrdma: Add default GID at index 0
        IB/mlx5, iser, isert: Add Signature API additions
        Target/iser: Centralize ib_sig_domain setting
        IB/iser: Centralize ib_sig_domain settings
        IB/mlx5: Use extended internal signature layout
        IB/iser: Set IP_CSUM as default guard type
        IB/iser: Remove redundant assignment
        IB/mlx5: Use enumerations for PI copy mask
        ...
      2eb7f910
    • Linus Torvalds's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 1f6075f9
      Linus Torvalds authored
      Pull more perf updates from Ingo Molnar:
       "A second (and last) round of late coming fixes and changes, almost all
        of them in perf tooling:
      
        User visible tooling changes:
      
         - Add period data column and make it default in 'perf script' (Jiri
           Olsa)
      
         - Add a visual cue for toggle zeroing of samples in 'perf top'
           (Taeung Song)
      
         - Improve callchains when using libunwind (Namhyung Kim)
      
        Tooling fixes and infrastructure changes:
      
         - Fix for double free in 'perf stat' when using some specific invalid
           command line combo (Yasser Shalabi)
      
         - Fix off-by-one bugs in map->end handling (Stephane Eranian)
      
         - Fix off-by-one bug in maps__find(), also related to map->end
           handling (Namhyung Kim)
      
         - Make struct symbol->end be the first addr after the symbol range,
           to make it match the convention used for struct map->end.  (Arnaldo
           Carvalho de Melo)
      
         - Fix perf_evlist__add_pollfd() error handling in 'perf kvm stat
           live' (Jiri Olsa)
      
         - Fix python test build by moving callchain_param to an object linked
           into the python binding (Jiri Olsa)
      
         - Document sysfs events/ interfaces (Cody P Schafer)
      
         - Fix typos in perf/Documentation (Masanari Iida)
      
         - Add missing 'struct option' forward declaration (Arnaldo Carvalho
           de Melo)
      
         - Add option to copy events when queuing for sorting across cpu
           buffers and enable it for 'perf kvm stat live', to avoid having
           events left in the queue pointing to the ring buffer be rewritten
           in high volume sessions.  (Alexander Yarygin, improving work done
           by David Ahern):
      
         - Do not include a struct hists per perf_evsel, untangling the
           histogram code from perf_evsel, to pave the way for exporting a
           minimalistic tools/lib/api/perf/ library usable by tools/perf and
           initially by the rasd daemon being developed by Borislav Petkov,
           Robert Richter and Jean Pihet.  (Arnaldo Carvalho de Melo)
      
         - Make perf_evlist__open(evlist, NULL, NULL), i.e. without cpu and
           thread maps mean syswide monitoring, reducing the boilerplate for
           tools that only want system wide mode.  (Arnaldo Carvalho de Melo)
      
         - Move exit stuff from perf_evsel__delete to perf_evsel__exit, delete
           should be just a front end for exit + free (Arnaldo Carvalho de
           Melo)
      
         - Add support to new style format of kernel PMU event.  (Kan Liang)
      
        and other misc fixes"
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (45 commits)
        perf script: Add period as a default output column
        perf script: Add period data column
        perf evsel: No need to drag util/cgroup.h
        perf evlist: Add missing 'struct option' forward declaration
        perf evsel: Move exit stuff from __delete to __exit
        kprobes/x86: Remove stale ARCH_SUPPORTS_KPROBES_ON_FTRACE define
        perf kvm stat live: Enable events copying
        perf session: Add option to copy events when queueing
        perf Documentation: Fix typos in perf/Documentation
        perf trace: Use thread_{,_set}_priv helpers
        perf kvm: Use thread_{,_set}_priv helpers
        perf callchain: Create an address space per thread
        perf report: Set callchain_param.record_mode for future use
        perf evlist: Fix for double free in tools/perf stat
        perf test: Add test case for pmu event new style format
        perf tools: Add support to new style format of kernel PMU event
        perf tools: Parse the pmu event prefix and suffix
        Revert "perf tools: Default to cpu// for events v5"
        perf Documentation: Remove Ruplicated docs for powerpc cpu specific events
        perf Documentation: sysfs events/ interfaces
        ...
      1f6075f9
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · 5e2ee7cd
      Linus Torvalds authored
      Pull sparc fixes from David Miller:
       "Here we have two bug fixes:
      
        1) The current thread's fault_code is not setup properly upon entry to
           do_sparc64_fault() in some paths, leading to spurious SIGBUS.
      
        2) Don't use a zero length array at the end of thread_info on sparc64,
           otherwise end_of_stack() isn't right"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
        sparc64: Do not define thread fpregs save area as zero-length array.
        sparc64: Fix corrupted thread fault code.
      5e2ee7cd
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · e25b4927
      Linus Torvalds authored
      Pull networking fixes from David Miller:
       "A quick batch of bug fixes:
      
        1) Fix build with IPV6 disabled, from Eric Dumazet.
      
        2) Several more cases of caching SKB data pointers across calls to
           pskb_may_pull(), thus referencing potentially free'd memory.  From
           Li RongQing.
      
        3) DSA phy code tests operation presence improperly, instead of going:
      
              if (x->ops->foo)
                      r = x->ops->foo(args);
      
           it was going:
      
              if (x->ops->foo(args))
                      r = x->ops->foo(args);
      
         Fix from Andew Lunn"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
        Net: DSA: Fix checking for get_phy_flags function
        ipv6: fix a potential use after free in sit.c
        ipv6: fix a potential use after free in ip6_offload.c
        ipv4: fix a potential use after free in gre_offload.c
        tcp: fix build error if IPv6 is not enabled
      e25b4927
    • Andrew Lunn's avatar
      Net: DSA: Fix checking for get_phy_flags function · 228b16cb
      Andrew Lunn authored
      The check for the presence or not of the optional switch function
      get_phy_flags() called the function, rather than checked to see if it
      is a NULL pointer. This causes a derefernce of a NULL pointer on all
      switch chips except the sf2, the only switch to implement this call.
      Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Fixes: 6819563e ("net: dsa: allow switch drivers to specify phy_device::dev_flags")
      Cc: Florian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      228b16cb
    • David S. Miller's avatar
      sparc64: Do not define thread fpregs save area as zero-length array. · e2653143
      David S. Miller authored
      This breaks the stack end corruption detection facility.
      
      What that facility does it write a magic value to "end_of_stack()"
      and checking to see if it gets overwritten.
      
      "end_of_stack()" is "task_thread_info(p) + 1", which for sparc64 is
      the beginning of the FPU register save area.
      
      So once the user uses the FPU, the magic value is overwritten and the
      debug checks trigger.
      
      Fix this by making the size explicit.
      
      Due to the size we use for the fpsaved[], gsr[], and xfsr[] arrays we
      are limited to 7 levels of FPU state saves.  So each FPU register set
      is 256 bytes, allocate 256 * 7 for the fpregs area.
      Reported-by: default avatarMeelis Roos <mroos@linux.ee>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e2653143
    • David S. Miller's avatar
      sparc64: Fix corrupted thread fault code. · 84bd6d8b
      David S. Miller authored
      Every path that ends up at do_sparc64_fault() must install a valid
      FAULT_CODE_* bitmask in the per-thread fault code byte.
      
      Two paths leading to the label winfix_trampoline (which expects the
      FAULT_CODE_* mask in register %g4) were not doing so:
      
      1) For pre-hypervisor TLB protection violation traps, if we took
         the 'winfix_trampoline' path we wouldn't have %g4 initialized
         with the FAULT_CODE_* value yet.  Resulting in using the
         TLB_TAG_ACCESS register address value instead.
      
      2) In the TSB miss path, when we notice that we are going to use a
         hugepage mapping, but we haven't allocated the hugepage TSB yet, we
         still have to take the window fixup case into consideration and
         in that particular path we leave %g4 not setup properly.
      
      Errors on this sort were largely invisible previously, but after
      commit 4ccb9272 ("sparc64: sun4v TLB
      error power off events") we now have a fault_code mask bit
      (FAULT_CODE_BAD_RA) that triggers due to this bug.
      
      FAULT_CODE_BAD_RA triggers because this bit is set in TLB_TAG_ACCESS
      (see #1 above) and thus we get seemingly random bus errors triggered
      for user processes.
      
      Fixes: 4ccb9272 ("sparc64: sun4v TLB error power off events")
      Reported-by: default avatarMeelis Roos <mroos@linux.ee>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      84bd6d8b
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma · 52d589a0
      Linus Torvalds authored
      Pull slave-dmaengine updates from Vinod Koul:
       "For dmaengine contributions we have:
         - designware cleanup by Andy
         - my series moving device_control users to dmanegine_xxx APIs for
           later removal of device_control API
         - minor fixes spread over drivers mainly mv_xor, pl330, mmp, imx-sdma
           etc"
      
      * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (60 commits)
        serial: atmel: add missing dmaengine header
        dmaengine: remove FSLDMA_EXTERNAL_START
        dmaengine: freescale: remove FSLDMA_EXTERNAL_START control method
        carma-fpga: move to fsl_dma_external_start()
        carma-fpga: use dmaengine_xxx() API
        dmaengine: freescale: add and export fsl_dma_external_start()
        dmaengine: add dmaengine_prep_dma_sg() helper
        video: mx3fb: use dmaengine_terminate_all() API
        serial: sh-sci: use dmaengine_terminate_all() API
        net: ks8842: use dmaengine_terminate_all() API
        mtd: sh_flctl: use dmaengine_terminate_all() API
        mtd: fsmc_nand: use dmaengine_terminate_all() API
        V4L2: mx3_camer: use dmaengine_pause() API
        dmaengine: coh901318: use dmaengine_terminate_all() API
        pata_arasan_cf: use dmaengine_terminate_all() API
        dmaengine: edma: check for echan->edesc => NULL in edma_dma_pause()
        dmaengine: dw: export probe()/remove() and Co to users
        dmaengine: dw: enable and disable controller when needed
        dmaengine: dw: always export dw_dma_{en,dis}able
        dmaengine: dw: introduce dw_dma_on() helper
        ...
      52d589a0