1. 24 8月, 2012 8 次提交
  2. 23 8月, 2012 9 次提交
    • A
      x86, microcode, AMD: Fix broken ucode patch size check · 36bf50d7
      Andreas Herrmann 提交于
      This issue was recently observed on an AMD C-50 CPU where a patch of
      maximum size was applied.
      
      Commit be62adb4 ("x86, microcode, AMD: Simplify ucode verification")
      added current_size in get_matching_microcode(). This is calculated as
      size of the ucode patch + 8 (ie. size of the header). Later this is
      compared against the maximum possible ucode patch size for a CPU family.
      And of course this fails if the patch has already maximum size.
      
      Cc: <stable@vger.kernel.org> [3.3+]
      Signed-off-by: NAndreas Herrmann <andreas.herrmann3@amd.com>
      Signed-off-by: NBorislav Petkov <borislav.petkov@amd.com>
      Link: http://lkml.kernel.org/r/1344361461-10076-1-git-send-email-bp@amd64.orgSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
      36bf50d7
    • L
      Linux 3.6-rc3 · fea7a08a
      Linus Torvalds 提交于
      fea7a08a
    • L
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 4ff63e47
      Linus Torvalds 提交于
      Pull drm fixes from Dave Airlie:
       "Intel: edid fixes, power consumption fix, s/r fix, haswell fix
      
        Radeon: BIOS loading fixes for UEFI and Thunderbolt machines, better
        MSAA validation, lockup timeout fixes, modesetting fixes
      
        One udl dpms fix, one vmwgfx fix, a couple of trivial core changes.
      
        There is an export added to ACPI as part of the radeon bios fixes.
      
        I've also included the fbcon flashing cursor vs deinit race fix, that
        seems the simplest place to start"
      
      Trivial conflict in drivers/video/console/fbcon.c due to me having
      already applied the fbcon flashing cursor vs deinit race fix, and Dave
      had added a comment in there too.
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits)
        fbcon: fix race condition between console lock and cursor timer (v1.1)
        drm: Add missing static storage class specifiers in drm_proc.c file
        drm/udl: dpms off the crtc when disabled.
        drm: Remove two unused fields from struct drm_display_mode
        drm: stop vmgfx driver explosion
        drm/radeon/ss: use num_crtc rather than hardcoded 6
        Revert "drm/radeon: fix bo creation retry path"
        drm/i915: use hsw rps tuning values everywhere on gen6+
        drm/radeon: split ATRM support out from the ATPX handler (v3)
        drm/radeon: convert radeon vfct code to use acpi_get_table_with_size
        ACPI: export symbol acpi_get_table_with_size
        drm/radeon: implement ACPI VFCT vbios fetch (v3)
        drm/radeon/kms: extend the Fujitsu D3003-S2 board connector quirk to cover later silicon stepping
        drm/radeon: fix checking of MSAA renderbuffers on r600-r700
        drm/radeon: allow CMASK and FMASK in the CS checker on r600-r700
        drm/radeon: init lockup timeout on ring init
        drm/radeon: avoid turning off spread spectrum for used pll
        drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads
        drm/i915: extract connector update from intel_ddc_get_modes() for reuse
        drm/i915: fix hsw uncached pte
        ...
      4ff63e47
    • L
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending · 09236994
      Linus Torvalds 提交于
      Pull SCSI target fixes from Nicholas Bellinger:
       "The executive summary includes:
      
         - Post-merge review comments for tcm_vhost (MST + nab)
         - Avoid debugging overhead when not debugging for tcm-fc(FCoE) (MDR)
         - Fix NULL pointer dereference bug on alloc_page failulre (Yi Zou)
         - Fix REPORT_LUNs regression bug with pSCSI export (AlexE + nab)
         - Fix regression bug with handling of zero-length data CDBs (nab)
         - Fix vhost_scsi_target structure alignment (MST)
      
        Thanks again to everyone who contributed a bugfix patch, gave review
        feedback on tcm_vhost code, and/or reported a bug during their own
        testing over the last weeks.
      
        There is one other outstanding bug reported by Roland recently related
        to SCSI transfer length overflow handling, for which the current
        proposed bugfix has been left in queue pending further testing with
        other non iscsi-target based fabric drivers.
      
        As the patch is verified with loopback (local SGL memory from SCSI
        LLD) + tcm_qla2xxx (TCM allocated SGL memory mapped to PCI HW) fabric
        ports, it will be included into the next 3.6-rc-fixes PULL request."
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
        target: Remove unused se_cmd.cmd_spdtl
        tcm_fc: rcu_deref outside rcu lock/unlock section
        tcm_vhost: Fix vhost_scsi_target structure alignment
        target: Fix regression bug with handling of zero-length data CDBs
        target/pscsi: Fix bug with REPORT_LUNs handling for SCSI passthrough
        tcm_vhost: Change vhost_scsi_target->vhost_wwpn to char *
        target: fix NULL pointer dereference bug alloc_page() fails to get memory
        tcm_fc: Avoid debug overhead when not debugging
        tcm_vhost: Post-merge review changes requested by MST
        tcm_vhost: Fix incorrect IS_ERR() usage in vhost_scsi_map_iov_to_sgl
      09236994
    • L
      Merge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux · 2e2d8c93
      Linus Torvalds 提交于
      Pull i2c-embedded fixes from Wolfram Sang:
       "Some bugfixes for the "embedded" part of the I2C subsystem.  The fixes
        affect mostly drivers which have been largely reworked lately and
        where regressions appeared."
      
      * 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
        i2c: tegra: protect suspend/resume callbacks with CONFIG_PM_SLEEP
        i2c: diolan-u2c: Fix master_xfer return code
        I2C: OMAP: xfer: fix runtime PM get/put balance on error
        i2c: nomadik: Add default configuration into the Nomadik I2C driver
      2e2d8c93
    • L
      Merge tag 'for-3.6-rc3' of git://gitorious.org/linux-pwm/linux-pwm · fec3c03f
      Linus Torvalds 提交于
      Pull pwm fixes from Thierry Reding:
       "These patches fix the Samsung PWM driver and perform some minor
        cleanups like fixing checkpatch and sparse warnings.
      
        Two redundant error messages are removed and the Kconfig help text for
        the PWM subsystem is made more descriptive."
      
      * tag 'for-3.6-rc3' of git://gitorious.org/linux-pwm/linux-pwm:
        pwm: Improve Kconfig help text
        pwm: core: Fix coding style issues
        pwm: vt8500: Fix coding style issue
        pwm: Remove a redundant error message when devm_request_and_ioremap fails
        pwm: samsung: add missing device pointer to struct pwm_chip
        pwm: Add missing static storage class specifiers in core.c file
      fec3c03f
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client · f753c4ec
      Linus Torvalds 提交于
      Pull ceph fixes from Sage Weil:
       "Jim's fix closes a narrow race introduced with the msgr changes.  One
        fix resolves problems with debugfs initialization that Yan found when
        multiple client instances are created (e.g., two clusters mounted, or
        rbd + cephfs), another one fixes problems with mounting a nonexistent
        server subdirectory, and the last one fixes a divide by zero error
        from unsanitized ioctl input that Dan Carpenter found."
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
        ceph: avoid divide by zero in __validate_layout()
        libceph: avoid truncation due to racing banners
        ceph: tolerate (and warn on) extraneous dentry from mds
        libceph: delay debugfs initialization until we learn global_id
      f753c4ec
    • L
      Merge tag 'nfs-for-3.6-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs · ad746be9
      Linus Torvalds 提交于
      Pull NFS client bugfixes from Trond Myklebust:
       - NFSv3 mounts need to fail if the FSINFO rpc call fails
       - Ensure that the NFS commit cache gets torn down when we unload the
         NFS module.
       - Fix memory scribble issues when interrupting a LAYOUTGET rpc call
       - Fix NFSv4 legacy idmapper regressions
       - Fix issues with the NFSv4 getacl command
       - Fix a regression when using the legacy "mount -t nfs4"
      
      * tag 'nfs-for-3.6-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
        NFSv3: Ensure that do_proc_get_root() reports errors correctly
        NFSv4: Ensure that nfs4_alloc_client cleans up on error.
        NFS: return -ENOKEY when the upcall fails to map the name
        NFS: Clear key construction data if the idmap upcall fails
        NFSv4: Don't use private xdr_stream fields in decode_getacl
        NFSv4: Fix the acl cache size calculation
        NFSv4: Fix pointer arithmetic in decode_getacl
        NFS: Alias the nfs module to nfs4
        NFS: Fix a regression when loading the NFS v4 module
        NFSv4.1: Remove a bogus BUG_ON() in nfs4_layoutreturn_done
        pnfs-obj: Better IO pattern in case of unaligned offset
        NFS41: add pg_layout_private to nfs_pageio_descriptor
        pnfs: nfs4_proc_layoutget returns void
        pnfs: defer release of pages in layoutget
        nfs: tear down caches in nfs_init_writepagecache when allocation fails
      ad746be9
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 467e9e51
      Linus Torvalds 提交于
      Pull assorted fixes - mostly vfs - from Al Viro:
       "Assorted fixes, with an unexpected detour into vfio refcounting logics
        (fell out when digging in an analog of eventpoll race in there)."
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        task_work: add a scheduling point in task_work_run()
        fs: fix fs/namei.c kernel-doc warnings
        eventpoll: use-after-possible-free in epoll_create1()
        vfio: grab vfio_device reference *before* exposing the sucker via fd_install()
        vfio: get rid of vfio_device_put()/vfio_group_get_device* races
        vfio: get rid of open-coding kref_put_mutex
        introduce kref_put_mutex()
        vfio: don't dereference after kfree...
        mqueue: lift mnt_want_write() outside ->i_mutex, clean up a bit
      467e9e51
  3. 22 8月, 2012 23 次提交
    • S
      HID: Remove QUANTA from special drivers list · 53c84983
      Simon Farnsworth 提交于
      This QUANTA device is driven by the generic hid-multitouch.ko driver, and
      therefore shouldn't be in the special drivers list.
      
      This has been an oversight in 4fa3a583 ("HID: hid-multitouch: Switch to
      device groups").
      Signed-off-by: NSimon Farnsworth <simon.farnsworth@onelan.co.uk>
      Signed-off-by: NJiri Kosina <jkosina@suse.cz>
      53c84983
    • A
      UBIFS: fix error messages spelling · 69f90258
      Artem Bityutskiy 提交于
      Corruptio -> corruption.
      Signed-off-by: NArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
      69f90258
    • E
      task_work: add a scheduling point in task_work_run() · 88ec2789
      Eric Dumazet 提交于
      It seems commit 4a9d4b02 (switch fput to task_work_add) reintroduced
      the problem addressed in commit 944be0b2 (close_files(): add scheduling
      point)
      
      If a server process with a lot of files (say 2 million tcp sockets)
      is killed, we can spend a lot of time in task_work_run() and trigger
      a soft lockup.
      Signed-off-by: NEric Dumazet <edumazet@google.com>
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      88ec2789
    • R
      fs: fix fs/namei.c kernel-doc warnings · 55852635
      Randy Dunlap 提交于
      Fix kernel-doc warnings in fs/namei.c:
      
      Warning(fs/namei.c:360): No description found for parameter 'inode'
      Warning(fs/namei.c:672): No description found for parameter 'nd'
      Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
      Cc:	Alexander Viro <viro@zeniv.linux.org.uk>
      Cc:	linux-fsdevel@vger.kernel.org
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      55852635
    • A
      eventpoll: use-after-possible-free in epoll_create1() · 98022748
      Al Viro 提交于
      As soon as we'd installed the file into descriptor table, it can
      get closed by another thread.  Freeing ep in process...
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      98022748
    • A
      vfio: grab vfio_device reference *before* exposing the sucker via fd_install() · 31605deb
      Al Viro 提交于
      It's not critical (anymore) since another thread closing the file will block
      on ->device_lock before it gets to dropping the final reference, but it's
      definitely cleaner that way...
      Acked-by: NAlex Williamson <alex.williamson@redhat.com>
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      31605deb
    • A
      vfio: get rid of vfio_device_put()/vfio_group_get_device* races · 90b1253e
      Al Viro 提交于
      we really need to make sure that dropping the last reference happens
      under the group->device_lock; otherwise a loop (under device_lock)
      might find vfio_device instance that is being freed right now, has
      already dropped the last reference and waits on device_lock to exclude
      the sucker from the list.
      Acked-by: NAlex Williamson <alex.williamson@redhat.com>
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      90b1253e
    • A
      6d2cd3ce
    • A
      introduce kref_put_mutex() · 8ad5db8a
      Al Viro 提交于
      equivalent of
      	mutex_lock(mutex);
      	if (!kref_put(kref, release))
      		mutex_unlock(mutex);
      Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      8ad5db8a
    • A
      934ad4c2
    • A
      x86/alternatives: Fix p6 nops on non-modular kernels · cb09cad4
      Avi Kivity 提交于
      Probably a leftover from the early days of self-patching, p6nops
      are marked __initconst_or_module, which causes them to be
      discarded in a non-modular kernel.  If something later triggers
      patching, it will overwrite kernel code with garbage.
      Reported-by: NTomas Racek <tracek@redhat.com>
      Signed-off-by: NAvi Kivity <avi@redhat.com>
      Cc: Michael Tokarev <mjt@tls.msk.ru>
      Cc: Borislav Petkov <borislav.petkov@amd.com>
      Cc: Marcelo Tosatti <mtosatti@redhat.com>
      Cc: qemu-devel@nongnu.org
      Cc: Anthony Liguori <anthony@codemonkey.ws>
      Cc: H. Peter Anvin <hpa@linux.intel.com>
      Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
      Cc: Alan Cox <alan@linux.intel.com>
      Link: http://lkml.kernel.org/r/5034AE84.90708@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
      cb09cad4
    • A
      UBIFS: fix complaints about too small debug buffer size · 65b455b1
      Artem Bityutskiy 提交于
      When debugging is enabled, we use a temporary on-stack buffer for formatting
      the key strings like "(11368871, direntry, 0xcd0750)". The buffer size is
      32 bytes and sometimes it is not enough to fit the key string - e.g., when
      inode numbers are high. This is not fatal, but the key strings are incomplete
      and UBIFS complains like this:
      
      	UBIFS assert failed in dbg_snprintf_key at 137 (pid 1)
      
      This is a regression caused by "515315a1 UBIFS: fix key printing".
      
      Fix the issue by increasing the buffer to 48 bytes.
      Reported-by: NMichael Hench <michaelhench@gmail.com>
      Signed-off-by: NArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
      Tested-by: NMichael Hench <michaelhench@gmail.com>
      Cc: stable@vger.kernel.org [v3.3+]
      65b455b1
    • J
      time: Avoid making adjustments if we haven't accumulated anything · bf2ac312
      John Stultz 提交于
      If update_wall_time() is called and the current offset isn't large
      enough to accumulate, avoid re-calling timekeeping_adjust which may
      change the clock freq and can cause 1ns inconsistencies with
      CLOCK_REALTIME_COARSE/CLOCK_MONOTONIC_COARSE.
      Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
      Cc: Prarit Bhargava <prarit@redhat.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: stable@vger.kernel.org
      Link: http://lkml.kernel.org/r/1345595449-34965-5-git-send-email-john.stultz@linaro.orgSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      bf2ac312
    • J
      time: Avoid potential shift overflow with large shift values · 6ea565a9
      John Stultz 提交于
      Andreas Schwab noticed that the 1 << tk->shift could overflow if the
      shift value was greater than 30, since 1 would be a 32bit long on
      32bit architectures. This issue was introduced by 1e75fa8b (time:
      Condense timekeeper.xtime into xtime_sec)
      
      Use 1ULL instead to ensure we don't overflow on the shift.
      Reported-by: NAndreas Schwab <schwab@linux-m68k.org>
      Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
      Cc: Prarit Bhargava <prarit@redhat.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Link: http://lkml.kernel.org/r/1345595449-34965-4-git-send-email-john.stultz@linaro.orgSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      6ea565a9
    • A
      time: Fix casting issue in timekeeping_forward_now · 85dc8f05
      Andreas Schwab 提交于
      arch_gettimeoffset returns a u32 value which when shifted by tk->shift
      can overflow. This issue was introduced with 1e75fa8b (time: Condense
      timekeeper.xtime into xtime_sec)
      
      Cast it to u64 first.
      Signed-off-by: NAndreas Schwab <schwab@linux-m68k.org>
      Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
      Cc: Prarit Bhargava <prarit@redhat.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Link: http://lkml.kernel.org/r/1345595449-34965-3-git-send-email-john.stultz@linaro.orgSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      85dc8f05
    • J
      time: Ensure we normalize the timekeeper in tk_xtime_add · 784ffcbb
      John Stultz 提交于
      Andreas noticed problems with resume on specific hardware after commit
      1e75fa8b (time: Condense timekeeper.xtime into xtime_sec) combined
      with commit b44d50dc (time: Fix casting issue in tk_set_xtime and
      tk_xtime_add)
      
      After some digging I realized we aren't normalizing the timekeeper
      after the add. Add the missing normalize call.
      Reported-by: NAndreas Schwab <schwab@linux-m68k.org>
      Tested-by: NAndreas Schwab <schwab@linux-m68k.org>
      Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
      Cc: Prarit Bhargava <prarit@redhat.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Link: http://lkml.kernel.org/r/1345595449-34965-2-git-send-email-john.stultz@linaro.orgSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      784ffcbb
    • L
      x86/fixup_irq: Use cpu_online_mask instead of cpu_all_mask · 2530cd4f
      Liu, Chuansheng 提交于
      When one CPU is going down and this CPU is the last one in irq
      affinity, current code is setting cpu_all_mask as the new
      affinity for that irq.
      
      But for some systems (such as in Medfield Android mobile) the
      firmware sends the interrupt to each CPU in the irq affinity
      mask, averaged, and cpu_all_mask includes all potential CPUs,
      i.e. offline ones as well.
      
      So replace cpu_all_mask with cpu_online_mask.
      Signed-off-by: Nliu chuansheng <chuansheng.liu@intel.com>
      Acked-by: NYanmin Zhang <yanmin_zhang@linux.intel.com>
      Acked-by: NThomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/r/27240C0AC20F114CBF8149A2696CBE4A137286@SHSMSX101.ccr.corp.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
      2530cd4f
    • R
      x86/spinlocks: Fix comment in spinlock.h · 83be4ffa
      Richard Weinberger 提交于
      This comment is no longer true.  We support up to 2^16 CPUs
      because __ticket_t is an u16 if NR_CPUS is larger than 256.
      Signed-off-by: NRichard Weinberger <richard@nod.at>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NIngo Molnar <mingo@kernel.org>
      83be4ffa
    • D
      fbcon: fix race condition between console lock and cursor timer (v1.1) · d8636a27
      Dave Airlie 提交于
      So we've had a fair few reports of fbcon handover breakage between
      efi/vesafb and i915 surface recently, so I dedicated a couple of
      days to finding the problem.
      
      Essentially the last thing we saw was the conflicting framebuffer
      message and that was all.
      
      So after much tracing with direct netconsole writes (printks
      under console_lock not so useful), I think I found the race.
      
      Thread A (driver load)    Thread B (timer thread)
        unbind_con_driver ->              |
        bind_con_driver ->                |
        vc->vc_sw->con_deinit ->          |
        fbcon_deinit ->                   |
        console_lock()                    |
            |                             |
            |                       fbcon_flashcursor timer fires
            |                       console_lock() <- blocked for A
            |
            |
      fbcon_del_cursor_timer ->
        del_timer_sync
        (BOOM)
      
      Of course because all of this is under the console lock,
      we never see anything, also since we also just unbound the active
      console guess what we never see anything.
      
      Hopefully this fixes the problem for anyone seeing vesafb->kms
      driver handoff.
      
      v1.1: add comment suggestion from Alan.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: NDave Airlie <airlied@redhat.com>
      d8636a27
    • L
      Merge branch 'akpm' (Andrew's patch-bomb) · 23dcfa61
      Linus Torvalds 提交于
      Merge fixes from Andrew Morton.
      
      Random drivers and some VM fixes.
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (17 commits)
        mm: compaction: Abort async compaction if locks are contended or taking too long
        mm: have order > 0 compaction start near a pageblock with free pages
        rapidio/tsi721: fix unused variable compiler warning
        rapidio/tsi721: fix inbound doorbell interrupt handling
        drivers/rtc/rtc-rs5c348.c: fix hour decoding in 12-hour mode
        mm: correct page->pfmemalloc to fix deactivate_slab regression
        drivers/rtc/rtc-pcf2123.c: initialize dynamic sysfs attributes
        mm/compaction.c: fix deferring compaction mistake
        drivers/misc/sgi-xp/xpc_uv.c: SGI XPC fails to load when cpu 0 is out of IRQ resources
        string: do not export memweight() to userspace
        hugetlb: update hugetlbpage.txt
        checkpatch: add control statement test to SINGLE_STATEMENT_DO_WHILE_MACRO
        mm: hugetlbfs: correctly populate shared pmd
        cciss: fix incorrect scsi status reporting
        Documentation: update mount option in filesystem/vfat.txt
        mm: change nr_ptes BUG_ON to WARN_ON
        cs5535-clockevt: typo, it's MFGPT, not MFPGT
      23dcfa61
    • L
      Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · a484147a
      Linus Torvalds 提交于
      Pull media fixes from Mauro Carvalho Chehab:
       "For bug fixes, at soc_camera, si470x, uvcvideo, iguanaworks IR driver,
        radio_shark Kbuild fixes, and at the V4L2 core (radio fixes)."
      
      * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
        [media] media: soc_camera: don't clear pix->sizeimage in JPEG mode
        [media] media: mx2_camera: Fix clock handling for i.MX27
        [media] video: mx2_camera: Use clk_prepare_enable/clk_disable_unprepare
        [media] video: mx1_camera: Use clk_prepare_enable/clk_disable_unprepare
        [media] media: mx3_camera: buf_init() add buffer state check
        [media] radio-shark2: Only compile led support when CONFIG_LED_CLASS is set
        [media] radio-shark: Only compile led support when CONFIG_LED_CLASS is set
        [media] radio-shark*: Call cancel_work_sync from disconnect rather then release
        [media] radio-shark*: Remove work-around for dangling pointer in usb intfdata
        [media] Add USB dependency for IguanaWorks USB IR Transceiver
        [media] Add missing logging for rangelow/high of hwseek
        [media] VIDIOC_ENUM_FREQ_BANDS fix
        [media] mem2mem_testdev: fix querycap regression
        [media] si470x: v4l2-compliance fixes
        [media] DocBook: Remove a spurious character
        [media] uvcvideo: Reset the bytesused field when recycling an erroneous buffer
      a484147a
    • L
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 8f8ba75e
      Linus Torvalds 提交于
      Pull networking update from David Miller:
       "A couple weeks of bug fixing in there.  The largest chunk is all the
        broken crap Amerigo Wang found in the netpoll layer."
      
       1) netpoll and it's users has several serious bugs:
          a) uses GFP_KERNEL with locks held
          b) interfaces requiring interrupts disabled are called with them
             enabled
          c) and vice versa
          d) VLAN tag demuxing, as per all other RX packet input paths, is not
             applied
      
          All from Amerigo Wang.
      
       2) Hopefully cure the ipv4 mapped ipv6 address TCP early demux bugs for
          good, from Neal Cardwell.
      
       3) Unlike AF_UNIX, AF_PACKET sockets don't set a default credentials
          when the user doesn't specify one explicitly during sendmsg().
          Instead we attach an empty (zero) SCM credential block which is
          definitely not what we want.  Fix from Eric Dumazet.
      
       4) IPv6 illegally invokes netdevice notifiers with RCU lock held, fix
          from Ben Hutchings.
      
       5) inet_csk_route_child_sock() checks wrong inet options pointer, fix
          from Christoph Paasch.
      
       6) When AF_PACKET is used for transmit, packet loopback doesn't behave
          properly when a socket fanout is enabled, from Eric Leblond.
      
       7) On bluetooth l2cap channel create failure, we leak the socket, from
          Jaganath Kanakkassery.
      
       8) Fix all the netprio file handling bugs found by Al Viro, from John
          Fastabend.
      
       9) Several error return and NULL deref bug fixes in networking drivers
          from Julia Lawall.
      
      10) A large smattering of struct padding et al.  kernel memory leaks to
          userspace found of Mathias Krause.
      
      11) Conntrack expections in netfilter can access an uninitialized timer,
          fix from Pablo Neira Ayuso.
      
      12) Several netfilter SIP tracker bug fixes from Patrick McHardy.
      
      13) IPSEC ipv6 routes are not initialized correctly all the time,
          resulting in an OOPS in inet_putpeer().  Also from Patrick McHardy.
      
      14) Bridging does rcu_dereference() outside of RCU protected area, from
          Stephen Hemminger.
      
      15) Fix routing cache removal performance regression when looking up
          output routes that have a local destination.  From Zheng Yan.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (87 commits)
        af_netlink: force credentials passing [CVE-2012-3520]
        ipv4: fix ip header ident selection in __ip_make_skb()
        ipv4: Use newinet->inet_opt in inet_csk_route_child_sock()
        tcp: fix possible socket refcount problem
        net: tcp: move sk_rx_dst_set call after tcp_create_openreq_child()
        net/core/dev.c: fix kernel-doc warning
        netconsole: remove a redundant netconsole_target_put()
        net: ipv6: fix oops in inet_putpeer()
        net/stmmac: fix issue of clk_get for Loongson1B.
        caif: Do not dereference NULL in chnl_recv_cb()
        af_packet: don't emit packet on orig fanout group
        drivers/net/irda: fix error return code
        drivers/net/wan/dscc4.c: fix error return code
        drivers/net/wimax/i2400m/fw.c: fix error return code
        smsc75xx: add missing entry to MAINTAINERS
        net: qmi_wwan: new devices: UML290 and K5006-Z
        net: sh_eth: Add eth support for R8A7779 device
        netdev/phy: skip disabled mdio-mux nodes
        dt: introduce for_each_available_child_of_node, of_get_next_available_child
        net: netprio: fix cgrp create and write priomap race
        ...
      8f8ba75e
    • M
      mm: compaction: Abort async compaction if locks are contended or taking too long · c67fe375
      Mel Gorman 提交于
      Jim Schutt reported a problem that pointed at compaction contending
      heavily on locks.  The workload is straight-forward and in his own words;
      
      	The systems in question have 24 SAS drives spread across 3 HBAs,
      	running 24 Ceph OSD instances, one per drive.  FWIW these servers
      	are dual-socket Intel 5675 Xeons w/48 GB memory.  I've got ~160
      	Ceph Linux clients doing dd simultaneously to a Ceph file system
      	backed by 12 of these servers.
      
      Early in the test everything looks fine
      
        procs -------------------memory------------------ ---swap-- -----io---- --system-- -----cpu-------
         r  b       swpd       free       buff      cache   si   so    bi    bo   in   cs  us sy  id wa st
        31 15          0     287216        576   38606628    0    0     2  1158    2   14   1  3  95  0  0
        27 15          0     225288        576   38583384    0    0    18 2222016 203357 134876  11 56  17 15  0
        28 17          0     219256        576   38544736    0    0    11 2305932 203141 146296  11 49  23 17  0
         6 18          0     215596        576   38552872    0    0     7 2363207 215264 166502  12 45  22 20  0
        22 18          0     226984        576   38596404    0    0     3 2445741 223114 179527  12 43  23 22  0
      
      and then it goes to pot
      
        procs -------------------memory------------------ ---swap-- -----io---- --system-- -----cpu-------
         r  b       swpd       free       buff      cache   si   so    bi    bo   in   cs  us sy  id wa st
        163  8          0     464308        576   36791368    0    0    11 22210  866  536   3 13  79  4  0
        207 14          0     917752        576   36181928    0    0   712 1345376 134598 47367   7 90   1  2  0
        123 12          0     685516        576   36296148    0    0   429 1386615 158494 60077   8 84   5  3  0
        123 12          0     598572        576   36333728    0    0  1107 1233281 147542 62351   7 84   5  4  0
        622  7          0     660768        576   36118264    0    0   557 1345548 151394 59353   7 85   4  3  0
        223 11          0     283960        576   36463868    0    0    46 1107160 121846 33006   6 93   1  1  0
      
      Note that system CPU usage is very high blocks being written out has
      dropped by 42%. He analysed this with perf and found
      
        perf record -g -a sleep 10
        perf report --sort symbol --call-graph fractal,5
          34.63%  [k] _raw_spin_lock_irqsave
                  |
                  |--97.30%-- isolate_freepages
                  |          compaction_alloc
                  |          unmap_and_move
                  |          migrate_pages
                  |          compact_zone
                  |          compact_zone_order
                  |          try_to_compact_pages
                  |          __alloc_pages_direct_compact
                  |          __alloc_pages_slowpath
                  |          __alloc_pages_nodemask
                  |          alloc_pages_vma
                  |          do_huge_pmd_anonymous_page
                  |          handle_mm_fault
                  |          do_page_fault
                  |          page_fault
                  |          |
                  |          |--87.39%-- skb_copy_datagram_iovec
                  |          |          tcp_recvmsg
                  |          |          inet_recvmsg
                  |          |          sock_recvmsg
                  |          |          sys_recvfrom
                  |          |          system_call
                  |          |          __recv
                  |          |          |
                  |          |           --100.00%-- (nil)
                  |          |
                  |           --12.61%-- memcpy
                   --2.70%-- [...]
      
      There was other data but primarily it is all showing that compaction is
      contended heavily on the zone->lock and zone->lru_lock.
      
      commit [b2eef8c0: mm: compaction: minimise the time IRQs are disabled
      while isolating pages for migration] noted that it was possible for
      migration to hold the lru_lock for an excessive amount of time. Very
      broadly speaking this patch expands the concept.
      
      This patch introduces compact_checklock_irqsave() to check if a lock
      is contended or the process needs to be scheduled. If either condition
      is true then async compaction is aborted and the caller is informed.
      The page allocator will fail a THP allocation if compaction failed due
      to contention. This patch also introduces compact_trylock_irqsave()
      which will acquire the lock only if it is not contended and the process
      does not need to schedule.
      Reported-by: NJim Schutt <jaschut@sandia.gov>
      Tested-by: NJim Schutt <jaschut@sandia.gov>
      Signed-off-by: NMel Gorman <mgorman@suse.de>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c67fe375