1. 23 Jan, 2015 2 commits
  2. 22 Jan, 2015 5 commits
  3. 21 Jan, 2015 4 commits
    • Linus Torvalds's avatar
      Merge tag 'trace-sh-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · b942c653
      Linus Torvalds authored
      Pull superh tracing fix from Steven Rostedt:
       "It's been reported that function tracing does not work on the sh
        architecture because gcc 4.8 for superH does not support -m32, and the
        recordmcount.pl script adds "-m32" when re-compiling the object files
        with the mcount locations.
        I was not able to reproduce this problem, as it seems that -m32 works
        fine for my cross compiler gcc 4.6.3, but I have to assume that -m32
        was deprecated somewhere between 4.6 and 4.8.  As it still seems to
        compile fine without -m32, I have no reason not to add this patch, as
        having -m32 seems to cause trouble for others"
      * tag 'trace-sh-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        scripts/recordmcount.pl: There is no -m32 gcc option on Super-H anymore
    • Linus Torvalds's avatar
      Merge tag 'sound-3.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 5eb11d6b
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "This batch contains two fixes for FireWire lib module and a quirk for
        yet another Logitech WebCam.  The former is the fixes for MIDI
        handling I forgot to pick up during the merge window.  All the fixed
        code is pretty local and shouldn't give any regressions"
      * tag 'sound-3.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: usb-audio: Add mic volume fix quirk for Logitech Webcam C210
        ALSA: firewire-lib: limit the MIDI data rate
        ALSA: firewire-lib: remove rx_blocks_for_midi quirk
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 479459a8
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Just back from LCA + some days off, had some fixes from the past 2 weeks,
        Some amdkfd code removal for a feature that wasn't ready, otherwise
        just one fix for core helper sleeping, exynos, i915, and radeon fixes.
        I thought I had some sti fixes but they were already in, and it
        confused me for a few mins this morning"
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
        drm: fb helper should avoid sleeping in panic context
        drm/exynos: fix warning of vblank reference count
        drm/exynos: remove unnecessary runtime pm operations
        drm/exynos: fix reset codes for memory mapped hdmi phy
        drm/radeon: use rv515_ring_start on r5xx
        drm/radeon: add si dpm quirk list
        drm/radeon: don't print error on -ERESTARTSYS
        drm/i915: Fix mutex->owner inspection race under DEBUG_MUTEXES
        drm/i915: Ban Haswell from using RCS flips
        drm/i915: vlv: sanitize RPS interrupt mask during GPU idling
        drm/i915: fix HW lockup due to missing RPS IRQ workaround on GEN6
        drm/i915: gen9: fix RPS interrupt routing to CPU vs. GT
        drm/exynos: remove the redundant machine checking code
        drm/radeon: add a dpm quirk list
        drm/amdkfd: Fix sparse warning (different address space)
        drm/radeon: fix VM flush on CIK (v3)
        drm/radeon: fix VM flush on SI (v3)
        drm/radeon: fix VM flush on cayman/aruba (v3)
        drm/amdkfd: Drop interrupt SW ring buffer
    • Linus Torvalds's avatar
      Merge tag 'mfd-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd · 7c4bb81c
      Linus Torvalds authored
      Pull MFD fixes from Lee Jones:
       - Avoid platform ID collision in da9052
       - Skip caching volatile registers in tps65218
       - Use correct address base in tps65218
       - Repair deadlock on suspend in rtsx_usb
      * tag 'mfd-fixes-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
        mfd: rtsx_usb: Fix runtime PM deadlock
        mfd: tps65218: Make INT1 our status_base register
        mfd: tps65218: Make INT[12] and STATUS registers volatile
        mfd: da9052-core: Fix platform-device id collision
  4. 20 Jan, 2015 20 commits
    • Dave Airlie's avatar
      Merge tag 'drm-amdkfd-fixes-2015-01-13' of... · 67cf2d39
      Dave Airlie authored
      Merge tag 'drm-amdkfd-fixes-2015-01-13' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes
      - Remove the interrupt SW ring buffer impl. as it is not used by any module
        in amdkfd.
      - Fix a sparse warning
      * tag 'drm-amdkfd-fixes-2015-01-13' of git://people.freedesktop.org/~gabbayo/linux:
        drm/amdkfd: Fix sparse warning (different address space)
        drm/amdkfd: Drop interrupt SW ring buffer
    • Dave Airlie's avatar
      Merge tag 'drm-intel-fixes-2015-01-15' of git://anongit.freedesktop.org/drm-intel into drm-fixes · 9e4fc22a
      Dave Airlie authored
      misc i915 fixes
      * tag 'drm-intel-fixes-2015-01-15' of git://anongit.freedesktop.org/drm-intel:
        drm/i915: Fix mutex->owner inspection race under DEBUG_MUTEXES
        drm/i915: Ban Haswell from using RCS flips
        drm/i915: vlv: sanitize RPS interrupt mask during GPU idling
        drm/i915: fix HW lockup due to missing RPS IRQ workaround on GEN6
        drm/i915: gen9: fix RPS interrupt routing to CPU vs. GT
    • Rui Wang's avatar
      drm: fb helper should avoid sleeping in panic context · 9aa609e1
      Rui Wang authored
      There are still some places in the fb helper that need to avoid
      sleeping in panic context. Here's an example:
      [   65.615496] bad: scheduling from the idle thread!
      [   65.620747] CPU: 92 PID: 0 Comm: swapper/92 Tainted: G   M        E  3.18.0-rc4-7-default+ #20
      [   65.630364] Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS
      BRHSXSD1.86B.0056.R01.1409242327 09/24/2014
      [   65.641923]  ffff88087f693d80 ffff88087f689878 ffffffff81566db9 0000000000000000
      [   65.650226]  ffff88087f693d80 ffff88087f689898 ffffffff810871ff ffff88046eb3e0d0
      [   65.658527]  ffff88087f693d80 ffff88087f6898c8 ffffffff8107c1fa 000000017f6898b8
      [   65.666830] Call Trace:
      [   65.669557]  <#MC>  [<ffffffff81566db9>] dump_stack+0x46/0x58
      [   65.675994]  [<ffffffff810871ff>] dequeue_task_idle+0x2f/0x40
      [   65.682412]  [<ffffffff8107c1fa>] dequeue_task+0x5a/0x80
      [   65.688345]  [<ffffffff810804f3>] deactivate_task+0x23/0x30
      [   65.694569]  [<ffffffff81569050>] __schedule+0x580/0x7f0
      [   65.700502]  [<ffffffff81569739>] schedule_preempt_disabled+0x29/0x70
      [   65.707696]  [<ffffffff8156abb6>] __ww_mutex_lock_slowpath+0xb8/0x162
      [   65.714891]  [<ffffffff8156acb3>] __ww_mutex_lock+0x53/0x85
      [   65.721125]  [<ffffffffa00b3a5d>] drm_modeset_lock+0x3d/0x110 [drm]
      [   65.728132]  [<ffffffffa00b3c2a>] __drm_modeset_lock_all+0x8a/0x120 [drm]
      [   65.735721]  [<ffffffffa00b3cd0>] drm_modeset_lock_all+0x10/0x30 [drm]
      [   65.743015]  [<ffffffffa01af8bf>] drm_fb_helper_pan_display+0x2f/0xf0 [drm_kms_helper]
      [   65.751857]  [<ffffffff8132bd21>] fb_pan_display+0xd1/0x1a0
      [   65.758081]  [<ffffffff81326010>] bit_update_start+0x20/0x50
      [   65.764400]  [<ffffffff813259f2>] fbcon_switch+0x3a2/0x550
      [   65.770528]  [<ffffffff813a01c9>] redraw_screen+0x189/0x240
      [   65.776750]  [<ffffffff81322f8a>] fbcon_blank+0x20a/0x2d0
      [   65.782778]  [<ffffffff8137d359>] ? erst_writer+0x209/0x330
      [   65.789002]  [<ffffffff810ba2f3>] ? internal_add_timer+0x63/0x80
      [   65.795710]  [<ffffffff810bc137>] ? mod_timer+0x127/0x1e0
      [   65.801740]  [<ffffffff813a0cd8>] do_unblank_screen+0xa8/0x1d0
      [   65.808255]  [<ffffffff813a0e10>] unblank_screen+0x10/0x20
      [   65.814381]  [<ffffffff812ca0d9>] bust_spinlocks+0x19/0x40
      [   65.820508]  [<ffffffff81561ca7>] panic+0x106/0x1f5
      [   65.825955]  [<ffffffff8102336c>] mce_panic+0x2ac/0x2e0
      [   65.831789]  [<ffffffff812c796a>] ? delay_tsc+0x4a/0x80
      [   65.837625]  [<ffffffff81024e1f>] do_machine_check+0xbaf/0xbf0
      [   65.844138]  [<ffffffff813365d7>] ? intel_idle+0xc7/0x150
      [   65.850166]  [<ffffffff8156f03f>] machine_check+0x1f/0x30
      [   65.856195]  [<ffffffff813365d7>] ? intel_idle+0xc7/0x150
      [   65.862222]  <<EOE>>  [<ffffffff814283d5>] cpuidle_enter_state+0x55/0x170
      [   65.869823]  [<ffffffff814285a7>] cpuidle_enter+0x17/0x20
      [   65.875852]  [<ffffffff81097b08>] cpu_startup_entry+0x2d8/0x370
      [   65.882467]  [<ffffffff8102fe29>] start_secondary+0x159/0x180
      There's __drm_modeset_lock_all() which Daniel Vetter introduced for this
      purpose. We can leverage that without reinventing anything. This patch
      works with the latest kernel.
      Reviewed-by: Rob Clark's avatarRob Clark <robdclark@gmail.com>
      Tested-by: default avatarTony Luck <tony.luck@intel.com>
      Signed-off-by: default avatarRui Wang <rui.y.wang@intel.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
    • Dave Airlie's avatar
      Merge branch 'exynos-drm-fixes' of... · e902027a
      Dave Airlie authored
      Merge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
      This pull request includes below fixups,
      - Remove duplicated machine checking.
        . It seems that this code was added when you merged 'v3.18-rc7' into
          drm-next. commit id : e8115e79
      - Fix hdmiphy reset.
        . Exynos hdmi has two interfaces to control hdmyphy, one is I2C, other
          is APB bus - memory mapped I/O. So this patch makes hdmiphy reset
          to be done according to interfaces, I2C or APB bus.
      - And add some exception codes.
      * 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
        drm/exynos: fix warning of vblank reference count
        drm/exynos: remove unnecessary runtime pm operations
        drm/exynos: fix reset codes for memory mapped hdmi phy
        drm/exynos: remove the redundant machine checking code
    • Dave Airlie's avatar
      Merge branch 'drm-fixes-3.19' of git://people.freedesktop.org/~agd5f/linux into drm-fixes · b46ce98d
      Dave Airlie authored
      Some radeon fixes for 3.19:
          - GPUVM stability fixes
          - SI dpm quirks
          - Regression fixes
      * 'drm-fixes-3.19' of git://people.freedesktop.org/~agd5f/linux:
        drm/radeon: use rv515_ring_start on r5xx
        drm/radeon: add si dpm quirk list
        drm/radeon: don't print error on -ERESTARTSYS
        drm/radeon: add a dpm quirk list
        drm/radeon: fix VM flush on CIK (v3)
        drm/radeon: fix VM flush on SI (v3)
        drm/radeon: fix VM flush on cayman/aruba (v3)
    • Linus Torvalds's avatar
      Merge branch 'for-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata · b97f880c
      Linus Torvalds authored
      Pull libata fixes from Tejun Heo:
       - Bartlomiej will be co-maintaining PATA portion of libata.  git
         workflow will stay the same.
       - sata_sil24 wasn't happy with tag ordered submission.  An option to
         restore the old tag allocation behavior is implemented for sil24.
       - a very old race condition in PIO host state machine which can trigger
         BUG fixed.
       - other driver-specific changes
      * 'for-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
        libata: prevent HSM state change race between ISR and PIO
        libata: allow sata_sil24 to opt-out of tag ordered submission
        ata: pata_at91: depend on !ARCH_MULTIPLATFORM
        ahci: Remove Device ID for Intel Sunrise Point PCH
        ahci: Use dev_info() to inform about the lack of Device Sleep support
        libata: Whitelist SSDs that are known to properly return zeroes after TRIM
        sata_dwc_460ex: fix resource leak on error path
        ata: add MAINTAINERS entry for libata PATA drivers
        libata: clean up MAINTAINERS entries
        libata: export ata_get_cmd_descript()
        ahci_xgene: Fix the DMA state machine lockup for the ATA_CMD_PACKET PIO mode command.
        ahci_xgene: Fix the endianess issue in APM X-Gene SoC AHCI SATA controller driver.
    • Linus Torvalds's avatar
      Merge branch 'for-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq · d4b2d006
      Linus Torvalds authored
      Pull workqueue fix from Tejun Heo:
       "The xfs folks have been running into weird and very rare lockups for
        some time now.  I didn't think this could have been from workqueue
        side because no one else was reporting it.  This time, Eric had a
        kdump which we looked into and it turned out this actually was a
        workqueue bug and the bug has been there since the beginning of
        concurrency managed workqueue.
        A worker pool ensures forward progress of the workqueues associated
        with it by always having at least one worker reserved from executing
        work items.  When the pool is under contention, the idle one tries to
        create more workers for the pool and if that doesn't succeed quickly
        enough, it calls the rescuers to the pool.
        This logic had a subtle race condition in an early exit path.  When a
        worker invokes this manager function, the function may return %false
        indicating that the caller may proceed to executing work items either
        because another worker is already performing the role or conditions
        have changed and the pool is no longer under contention.
        The latter part depended on the assumption that whether more workers
        are necessary or not remains stable while the pool is locked; however,
        pool->nr_running (concurrency count) may change asynchronously and it
        getting bumped from zero asynchronously could send off the last idle
        worker to execute work items.
        The race window is fairly narrow, and, even when it gets triggered,
        the pool deadlocks iff if all work items get blocked on pending work
        items of the pool, which is highly unlikely but can be triggered by
        The patch removes the race window by removing the early exit path,
        which doesn't server any purpose anymore anyway"
      * 'for-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
        workqueue: fix subtle pool management issue which can stall whole worker_pool
    • Roger Tseng's avatar
      mfd: rtsx_usb: Fix runtime PM deadlock · b166010f
      Roger Tseng authored
      sd_set_power_mode() in derived module drivers/mmc/host/rtsx_usb_sdmmc.c
      acquires dev_mutex and then calls pm_runtime_get_sync() to make sure the
      device is awake while initializing a newly inserted card. Once it is
      called during suspending state and explicitly before rtsx_usb_suspend()
      acquires the same dev_mutex, both routine deadlock and further hang the
      driver because pm_runtime_get_sync() waits the pending PM operations.
      Fix this by using an empty suspend method. mmc_core always turns the
      LED off after a request is done and thus it is ok to remove the only
      rtsx_usb_turn_off_led() here.
      Cc: <stable@vger.kernel.org> # v3.16+
      Fixes: 730876be
       ("mfd: Add realtek USB card reader driver")
      Signed-off-by: default avatarRoger Tseng <rogerable@realtek.com>
      [Lee: Removed newly unused variable]
      Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
    • Felipe Balbi's avatar
      mfd: tps65218: Make INT1 our status_base register · f29ae369
      Felipe Balbi authored
      If we don't tell regmap-irq that our first status
      register is at offset 1, it will try to read offset
      zero, which is the chipid register.
      Fixes: 44b4dc61
       mfd: tps65218: Add driver for the TPS65218 PMIC
      Cc: <stable@vger.kernel.org> # v3.15+
      Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
      Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
    • Felipe Balbi's avatar
      mfd: tps65218: Make INT[12] and STATUS registers volatile · 773328da
      Felipe Balbi authored
      STATUS register can be modified by the HW, so we
      should bypass cache because of that.
      In the case of INT[12] registers, they are the ones
      that actually clear the IRQ source at the time they
      are read. If we rely on the cache for them, we will
      never be able to clear the interrupt, which will cause
      our IRQ line to be disabled due to IRQ throttling.
      Fixes: 44b4dc61
       mfd: tps65218: Add driver for the TPS65218 PMIC
      Cc: <stable@vger.kernel.org> # v3.15+
      Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
      Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
    • Fabio Estevam's avatar
      mfd: da9052-core: Fix platform-device id collision · b3f6c73d
      Fabio Estevam authored
      Allow multiple DA9052 regulators be registered by registering with
      The subdevices are currently registered with PLATFORM_DEVID_NONE, which
      will cause a name collision on the platform bus when multiple regulators
      are registered:
      [    0.128855] da9052-regulator da9052-regulator: invalid regulator ID specified
      [    0.128973] da9052-regulator: probe of da9052-regulator failed with error -22
      [    0.129148] ------------[ cut here ]------------
      [    0.129200] WARNING: CPU: 0 PID: 1 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x5c/0x7c()
      [    0.129233] sysfs: cannot create duplicate filename '/devices/platform/soc/60000000.aips/63fc8000.i2c/i2c-0/0-0048/da9052-regulator
      [    0.132891] ------------[ cut here ]------------
      [    0.132924] WARNING: CPU: 0 PID: 1 at lib/kobject.c:240 kobject_add_internal+0x24c/0x2cc()
      [    0.132957] kobject_add_internal failed for da9052-regulator with -EEXIST, don't try to register things with the same name in the same directory.
      [    0.137000] da9052 0-0048: mfd_add_devices failed: -17
      [    0.138486] da9052: probe of 0-0048 failed with error -17
      Based on the fix done by Johan Hovold at commit b6684228
      viperboard: Fix platform-device id collision").
      Tested on a imx53-qsb board, where multiple DA9053 regulators can be
      successfully probed.
      Signed-off-by: default avatarFabio Estevam <fabio.estevam@freescale.com>
      Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
    • Jungseok Lee's avatar
      arm64: Add dtb files to archclean rule · c7c52e48
      Jungseok Lee authored
      As dts files have been reorganised under vendor subdirs, dtb files
      cannot be removed with "make distclean" now. Thus, this patch moves
      dtb files under archclean rule and removes unnecessary entries.
      Cc: Robert Richter <rrichter@cavium.com>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Will Deacon <will.deacon@arm.com>
      Signed-off-by: default avatarJungseok Lee <jungseoklee85@gmail.com>
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
    • Linus Torvalds's avatar
      Merge tag 'pinctrl-v3.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · 06efe0e5
      Linus Torvalds authored
      Pull pin control fixes from Linus Walleij:
       "Here is a (hopefully final) slew of pin control fixes for the v3.19
        series.  The deadlock fix is kind of serious and tagged for stable,
        the rest is business as usual.
         - Fix two deadlocks around the pin control mutexes, a long-standing
           issue that manifest itself in plug/unplug of pin controllers.
           (Tagged for stable.)
         - Handle an error path with zero functions in the Qualcomm pin
         - Drop a bogus second GPIO chip added in the Lantiq driver.
         - Fix sudden IRQ loss on Rockchip pin controllers.
         - Register the GIT tree in MAINTAINERS"
      * tag 'pinctrl-v3.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
        pinctrl: MAINTAINERS: add git tree reference
        pinctrl: qcom: Don't iterate past end of function array
        pinctrl: lantiq: remove bogus of_gpio_chip_add
        pinctrl: Fix two deadlocks
        pinctrl: rockchip: Avoid losing interrupts when supporting both edges
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · eef8f4c2
      Linus Torvalds authored
      Pull networking fixes from David Miller:
       1) Socket addresses returned in the error queue need to be fully
          initialized before being passed on to userspace, fix from Willem de
       2) Interrupt handling fixes to davinci_emac driver from Tony Lindgren.
       3) Fix races between receive packet steering and cpu hotplug, from Eric
       4) Allowing netlink sockets to subscribe to unknown multicast groups
          leads to crashes, don't allow it.  From Johannes Berg.
       5) One to many socket races in SCTP fixed by Daniel Borkmann.
       6) Put in a guard against the mis-use of ipv6 atomic fragments, from
          Hagen Paul Pfeifer.
       7) Fix promisc mode and ethtool crashes in sh_eth driver, from Ben
       8) NULL deref and double kfree fix in sxgbe driver from Girish K.S and
          Byungho An.
       9) cfg80211 deadlock fix from Arik Nemtsov.
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (36 commits)
        s2io: use snprintf() as a safety feature
        r8152: remove sram_read
        r8152: remove generic_ocp_read before writing
        bgmac: activate irqs only if there is nothing to poll
        bgmac: register napi before the device
        sh_eth: Fix ethtool operation crash when net device is down
        sh_eth: Fix promiscuous mode on chips without TSU
        ipv6: stop sending PTB packets for MTU < 1280
        net: sctp: fix race for one-to-many sockets in sendmsg's auto associate
        genetlink: synchronize socket closing and family removal
        genetlink: disallow subscribing to unknown mcast groups
        genetlink: document parallel_ops
        net: rps: fix cpu unplug
        net: davinci_emac: Add support for emac on dm816x
        net: davinci_emac: Fix ioremap for devices with MDIO within the EMAC address space
        net: davinci_emac: Fix incomplete code for getting the phy from device tree
        net: davinci_emac: Free clock after checking the frequency
        net: davinci_emac: Fix runtime pm calls for davinci_emac
        net: davinci_emac: Fix hangs with interrupts
        ip: zero sockaddr returned on error queue
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · 22628890
      Linus Torvalds authored
      Pull crypto fix from Herbert Xu:
       "This fixes a regression that arose from the change to add a crypto
        prefix to module names which was done to prevent the loading of
        arbitrary modules through the Crypto API.
        In particular, a number of modules were missing the crypto prefix
        which meant that they could no longer be autoloaded"
      * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        crypto: add missing crypto module aliases
    • Rusty Russell's avatar
      module: fix race in kallsyms resolution during module load success. · c7496379
      Rusty Russell authored
      The kallsyms routines (module_symbol_name, lookup_module_* etc) disable
      preemption to walk the modules rather than taking the module_mutex:
      this is because they are used for symbol resolution during oopses.
      This works because there are synchronize_sched() and synchronize_rcu()
      in the unload and failure paths.  However, there's one case which doesn't
      have that: the normal case where module loading succeeds, and we free
      the init section.
      We don't want a synchronize_rcu() there, because it would slow down
      module loading: this bug was introduced in 2009 to speed module
      loading in the first place.
      Thus, we want to do the free in an RCU callback.  We do this in the
      simplest possible way by allocating a new rcu_head: if we put it in
      the module structure we'd have to worry about that getting freed.
      Reported-by: default avatarRui Xiang <rui.xiang@huawei.com>
      Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
    • Rusty Russell's avatar
      module: remove mod arg from module_free, rename module_memfree(). · be1f221c
      Rusty Russell authored
      Nothing needs the module pointer any more, and the next patch will
      call it from RCU, where the module itself might no longer exist.
      Removing the arg is the safest approach.
      This just codifies the use of the module_alloc/module_free pattern
      which ftrace and bpf use.
      Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
      Acked-by: default avatarAlexei Starovoitov <ast@kernel.org>
      Cc: Mikael Starvik <starvik@axis.com>
      Cc: Jesper Nilsson <jesper.nilsson@axis.com>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Ley Foon Tan <lftan@altera.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Chris Metcalf <cmetcalf@ezchip.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: x86@kernel.org
      Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
      Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
      Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Cc: linux-cris-kernel@axis.com
      Cc: linux-kernel@vger.kernel.org
      Cc: linux-mips@linux-mips.org
      Cc: nios2-dev@lists.rocketboards.org
      Cc: linuxppc-dev@lists.ozlabs.org
      Cc: sparclinux@vger.kernel.org
      Cc: netdev@vger.kernel.org
    • Rusty Russell's avatar
      module_arch_freeing_init(): new hook for archs before module->module_init freed. · d453cded
      Rusty Russell authored
      Archs have been abusing module_free() to clean up their arch-specific
      allocations.  Since module_free() is also (ab)used by BPF and trace code,
      let's keep it to simple allocations, and provide a hook called before
      This means that avr32, ia64, parisc and s390 no longer need to implement
      their own module_free() at all.  avr32 doesn't need module_finalize()
      Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
      Cc: Chris Metcalf <cmetcalf@ezchip.com>
      Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
      Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Helge Deller <deller@gmx.de>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: linux-kernel@vger.kernel.org
      Cc: linux-ia64@vger.kernel.org
      Cc: linux-parisc@vger.kernel.org
      Cc: linux-s390@vger.kernel.org
    • Rusty Russell's avatar
      param: fix uninitialized read with CONFIG_DEBUG_LOCK_ALLOC · c772be52
      Rusty Russell authored
      ignore_lockdep is uninitialized, and sysfs_attr_init() doesn't initialize
      it, so memset to 0.
      Reported-by: default avatarHuang Ying <ying.huang@intel.com>
      Cc: Eric W. Biederman <ebiederm@xmission.com>
      Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
    • Dan Carpenter's avatar
      s2io: use snprintf() as a safety feature · a8c1d28a
      Dan Carpenter authored
      "sp->desc[i]" has 25 characters.  "dev->name" has 15 characters.  If we
      used all 15 characters then the sprintf() would overflow.
      I changed the "sprintf(sp->name, "%s Neterion %s"" to snprintf(), as
      well, even though it can't overflow just to be consistent.
      Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
  5. 19 Jan, 2015 9 commits