1. 21 Oct, 2015 2 commits
    • Christoph Hellwig's avatar
      block: add an API for Persistent Reservations · bbd3e064
      Christoph Hellwig authored
      This commits adds a driver API and ioctls for controlling Persistent
      Reservations s/genericly/generically/ at the block layer.  Persistent
      Reservations are supported by SCSI and NVMe and allow controlling who gets
      access to a device in a shared storage setup.
      
      Note that we add a pr_ops structure to struct block_device_operations
      instead of adding the members directly to avoid bloating all instances
      of devices that will never support Persistent Reservations.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      bbd3e064
    • Christoph Hellwig's avatar
      block: cleanup blkdev_ioctl · d8e4bb81
      Christoph Hellwig authored
      Split out helpers for all non-trivial ioctls to make this function simpler,
      and also start passing around a pointer version of the argument, as that's
      what most ioctl handlers actually need.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      d8e4bb81
  2. 15 Oct, 2015 2 commits
  3. 12 Oct, 2015 2 commits
  4. 09 Oct, 2015 15 commits
  5. 04 Oct, 2015 6 commits
    • Linus Torvalds's avatar
      Linux 4.3-rc4 · 049e6dde
      Linus Torvalds authored
      049e6dde
    • Linus Torvalds's avatar
      Merge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile · 30c44659
      Linus Torvalds authored
      Pull strscpy string copy function implementation from Chris Metcalf.
      
      Chris sent this during the merge window, but I waffled back and forth on
      the pull request, which is why it's going in only now.
      
      The new "strscpy()" function is definitely easier to use and more secure
      than either strncpy() or strlcpy(), both of which are horrible nasty
      interfaces that have serious and irredeemable problems.
      
      strncpy() has a useless return value, and doesn't NUL-terminate an
      overlong result.  To make matters worse, it pads a short result with
      zeroes, which is a performance disaster if you have big buffers.
      
      strlcpy(), by contrast, is a mis-designed "fix" for strlcpy(), lacking
      the insane NUL padding, but having a differently broken return value
      which returns the original length of the source string.  Which means
      that it will read characters past the count from the source buffer, and
      you have to trust the source to be properly terminated.  It also makes
      error handling fragile, since the test for overflow is unnecessarily
      subtle.
      
      strscpy() avoids both these problems, guaranteeing the NUL termination
      (but not excessive padding) if the destination size wasn't zero, and
      making the overflow condition very obvious by returning -E2BIG.  It also
      doesn't read past the size of the source, and can thus be used for
      untrusted source data too.
      
      So why did I waffle about this for so long?
      
      Every time we introduce a new-and-improved interface, people start doing
      these interminable series of trivial conversion patches.
      
      And every time that happens, somebody does some silly mistake, and the
      conversion patch to the improved interface actually makes things worse.
      Because the patch is mindnumbing and trivial, nobody has the attention
      span to look at it carefully, and it's usually done over large swatches
      of source code which means that not every conversion gets tested.
      
      So I'm pulling the strscpy() support because it *is* a better interface.
      But I will refuse to pull mindless conversion patches.  Use this in
      places where it makes sense, but don't do trivial patches to fix things
      that aren't actually known to be broken.
      
      * 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
        tile: use global strscpy() rather than private copy
        string: provide strscpy()
        Make asm/word-at-a-time.h available on all architectures
      30c44659
    • Linus Torvalds's avatar
      Merge tag 'md/4.3-fixes' of git://neil.brown.name/md · 15ecf9a9
      Linus Torvalds authored
      Pull md fixes from Neil Brown:
       "Assorted fixes for md in 4.3-rc.
      
        Two tagged for -stable, and one is really a cleanup to match and
        improve kmemcache interface.
      
      * tag 'md/4.3-fixes' of git://neil.brown.name/md:
        md/bitmap: don't pass -1 to bitmap_storage_alloc.
        md/raid1: Avoid raid1 resync getting stuck
        md: drop null test before destroy functions
        md: clear CHANGE_PENDING in readonly array
        md/raid0: apply base queue limits *before* disk_stack_limits
        md/raid5: don't index beyond end of array in need_this_block().
        raid5: update analysis state for failed stripe
        md: wait for pending superblock updates before switching to read-only
      15ecf9a9
    • Linus Torvalds's avatar
      Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus · 0d877081
      Linus Torvalds authored
      Pull MIPS updates from Ralf Baechle:
       "This week's round of MIPS fixes:
         - Fix JZ4740 build
         - Fix fallback to GFP_DMA
         - FP seccomp in case of ENOSYS
         - Fix bootmem panic
         - A number of FP and CPS fixes
         - Wire up new syscalls
         - Make sure BPF assembler objects can properly be disassembled
         - Fix BPF assembler code for MIPS I"
      
      * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
        MIPS: scall: Always run the seccomp syscall filters
        MIPS: Octeon: Fix kernel panic on startup from memory corruption
        MIPS: Fix R2300 FP context switch handling
        MIPS: Fix octeon FP context switch handling
        MIPS: BPF: Fix load delay slots.
        MIPS: BPF: Do all exports of symbols with FEXPORT().
        MIPS: Fix the build on jz4740 after removing the custom gpio.h
        MIPS: CPS: #ifdef on CONFIG_MIPS_MT_SMP rather than CONFIG_MIPS_MT
        MIPS: CPS: Don't include MT code in non-MT kernels.
        MIPS: CPS: Stop dangling delay slot from has_mt.
        MIPS: dma-default: Fix 32-bit fall back to GFP_DMA
        MIPS: Wire up userfaultfd and membarrier syscalls.
      0d877081
    • Linus Torvalds's avatar
      Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 3e519dde
      Linus Torvalds authored
      Pull irq fixes from Thomas Gleixner:
       "This update contains:
      
         - Fix for a long standing race affecting /proc/irq/NNN
      
         - One line fix for ARM GICV3-ITS counting the wrong data
      
         - Warning silencing in ARM GICV3-ITS.  Another GCC trying to be
           overly clever issue"
      
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        irqchip/gic-v3-its: Count additional LPIs for the aliased devices
        irqchip/gic-v3-its: Silence warning when its_lpi_alloc_chunks gets inlined
        genirq: Fix race in register_irq_proc()
      3e519dde
    • Markos Chandras's avatar
      MIPS: scall: Always run the seccomp syscall filters · d218af78
      Markos Chandras authored
      The MIPS syscall handler code used to return -ENOSYS on invalid
      syscalls. Whilst this is expected, it caused problems for seccomp
      filters because the said filters never had the change to run since
      the code returned -ENOSYS before triggering them. This caused
      problems on the chromium testsuite for filters looking for invalid
      syscalls. This has now changed and the seccomp filters are always
      run even if the syscall is invalid. We return -ENOSYS once we
      return from the seccomp filters. Moreover, similar codepaths have
      been merged in the process which simplifies somewhat the overall
      syscall code.
      Signed-off-by: default avatarMarkos Chandras <markos.chandras@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/11236/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      d218af78
  6. 03 Oct, 2015 4 commits
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 2cf30826
      Linus Torvalds authored
      Pull x86 fixes from Ingo Molnar:
       "Fixes all around the map: W+X kernel mapping fix, WCHAN fixes, two
        build failure fixes for corner case configs, x32 header fix and a
        speling fix"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/headers/uapi: Fix __BITS_PER_LONG value for x32 builds
        x86/mm: Set NX on gap between __ex_table and rodata
        x86/kexec: Fix kexec crash in syscall kexec_file_load()
        x86/process: Unify 32bit and 64bit implementations of get_wchan()
        x86/process: Add proper bound checks in 64bit get_wchan()
        x86, efi, kasan: Fix build failure on !KASAN && KMEMCHECK=y kernels
        x86/hyperv: Fix the build in the !CONFIG_KEXEC_CORE case
        x86/cpufeatures: Correct spelling of the HWP_NOTIFY flag
      2cf30826
    • Linus Torvalds's avatar
      Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 37cc7ab1
      Linus Torvalds authored
      Pull timer fixes from Ingo Molnar:
       "An abs64() fix in the watchdog driver, and two clocksource driver
        NO_IRQ assumption fixes"
      
      * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        clocksource: Fix abs() usage w/ 64bit values
        clocksource/drivers/keystone: Fix bad NO_IRQ usage
        clocksource/drivers/rockchip: Fix bad NO_IRQ usage
      37cc7ab1
    • Linus Torvalds's avatar
      Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · a758379b
      Linus Torvalds authored
      Pull EFI fixes from Ingo Molnar:
       "Two EFI fixes: one for x86, one for ARM, fixing a boot crash bug that
        can trigger under newer EFI firmware"
      
      * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        arm64/efi: Fix boot crash by not padding between EFI_MEMORY_RUNTIME regions
        x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at runtime, instead of top-down
      a758379b
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 14f97d97
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Bunch of fixes all over the place, all pretty small: amdgpu, i915,
        exynos, one qxl and one vmwgfx.
      
        There is also a bunch of mst fixes, I left some cleanups in the series
        as I didn't think it was worth splitting up the tested series"
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (37 commits)
        drm/dp/mst: add some defines for logical/physical ports
        drm/dp/mst: drop cancel work sync in the mstb destroy path (v2)
        drm/dp/mst: split connector registration into two parts (v2)
        drm/dp/mst: update the link_address_sent before sending the link address (v3)
        drm/dp/mst: fixup handling hotplug on port removal.
        drm/dp/mst: don't pass port into the path builder function
        drm/radeon: drop radeon_fb_helper_set_par
        drm: handle cursor_set2 in restore_fbdev_mode
        drm/exynos: Staticize local function in exynos_drm_gem.c
        drm/exynos: fimd: actually disable dp clock
        drm/exynos: dp: remove suspend/resume functions
        drm/qxl: recreate the primary surface when the bo is not primary
        drm/amdgpu: only print meaningful VM faults
        drm/amdgpu/cgs: remove import_gpu_mem
        drm/i915: Call non-locking version of drm_kms_helper_poll_enable(), v2
        drm: Add a non-locking version of drm_kms_helper_poll_enable(), v2
        drm/vmwgfx: Fix a command submission hang regression
        drm/exynos: remove unused mode_fixup() code
        drm/exynos: remove decon_mode_fixup()
        drm/exynos: remove fimd_mode_fixup()
        ...
      14f97d97
  7. 02 Oct, 2015 9 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input · 978ab6a0
      Linus Torvalds authored
      Pull input layer fixes from Dmitry Torokhov:
       "Fixes for two recent regressions (in Synaptics PS/2 and uinput
        drivers) and some more driver fixups"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
        Revert "Input: synaptics - fix handling of disabling gesture mode"
        Input: psmouse - fix data race in __ps2_command
        Input: elan_i2c - add all valid ic type for i2c/smbus
        Input: zhenhua - ensure we have BITREVERSE
        Input: omap4-keypad - fix memory leak
        Input: serio - fix blocking of parport
        Input: uinput - fix crash when using ABS events
        Input: elan_i2c - expand maximum product_id form 0xFF to 0xFFFF
        Input: elan_i2c - add ic type 0x03
        Input: elan_i2c - don't require known iap version
        Input: imx6ul_tsc - fix controller name
        Input: imx6ul_tsc - use the preferred method for kzalloc()
        Input: imx6ul_tsc - check for negative return value
        Input: imx6ul_tsc - propagate the errors
        Input: walkera0701 - fix abs() calculations on 64 bit values
        Input: mms114 - remove unneded semicolons
        Input: pm8941-pwrkey - remove unneded semicolon
        Input: fix typo in MT documentation
        Input: cyapa - fix address of Gen3 devices in device tree documentation
      978ab6a0
    • John Stultz's avatar
      clocksource: Fix abs() usage w/ 64bit values · 67dfae0c
      John Stultz authored
      This patch fixes one cases where abs() was being used with 64-bit
      nanosecond values, where the result may be capped at 32-bits.
      
      This potentially could cause watchdog false negatives on 32-bit
      systems, so this patch addresses the issue by using abs64().
      Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
      Cc: Prarit Bhargava <prarit@redhat.com>
      Cc: Richard Cochran <richardcochran@gmail.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: stable@vger.kernel.org
      Link: http://lkml.kernel.org/r/1442279124-7309-2-git-send-email-john.stultz@linaro.orgSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      67dfae0c
    • Linus Torvalds's avatar
      Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux · 5634347d
      Linus Torvalds authored
      Pull arm64 fixes from Catalin Marinas:
      
       - Fix for transparent huge page change_protection() logic which was
         inadvertently changing a huge pmd page into a pmd table entry.
      
       - Function graph tracer panic fix caused by the return_to_handler code
         corrupting the multi-regs function return value (composite types).
      
      * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
        arm64: ftrace: fix function_graph tracer panic
        arm64: Fix THP protection change logic
      5634347d
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k · b55a97e7
      Linus Torvalds authored
      Pull m68k updates from Geert Uytterhoeven:
       "Summary:
         - Fix for accidental modification of arguments of syscall functions
         - Wire up new syscalls
         - Update defconfigs"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
        m68k/defconfig: Update defconfigs for v4.3-rc1
        m68k: Define asmlinkage_protect
        m68k: Wire up membarrier
        m68k: Wire up userfaultfd
        m68k: Wire up direct socket calls
      b55a97e7
    • Marc Zyngier's avatar
      irqchip/gic-v3-its: Count additional LPIs for the aliased devices · 791c76d5
      Marc Zyngier authored
      When configuring the interrupt mapping for a new device, we
      iterate over all the possible aliases to account for their
      maximum MSI allocation. This was introduced by e8137f4f
      ("irqchip: gicv3-its: Iterate over PCI aliases to generate ITS configuration").
      
      Turns out that the code doing that is a bit braindead, and repeatedly
      accounts for the same device over and over.
      
      Fix this by counting the actual alias that is passed to us by the
      core code.
      Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: Alex Shi <alex.shi@linaro.org>
      Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
      Cc: David Daney <ddaney.cavm@gmail.com>
      Cc: Jason Cooper <jason@lakedaemon.net>
      Link: http://lkml.kernel.org/r/1443800646-8074-3-git-send-email-marc.zyngier@arm.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      791c76d5
    • Marc Zyngier's avatar
      irqchip/gic-v3-its: Silence warning when its_lpi_alloc_chunks gets inlined · c8415b94
      Marc Zyngier authored
      More agressive inlining in recent versions of GCC have uncovered
      a new set of warnings:
      
       drivers/irqchip/irq-gic-v3-its.c: In function its_msi_prepare:
        drivers/irqchip/irq-gic-v3-its.c:1148:26: warning: lpi_base may be used
          uninitialized in this function [-Wmaybe-uninitialized]
           dev->event_map.lpi_base = lpi_base;
                                ^
       drivers/irqchip/irq-gic-v3-its.c:1116:6: note: lpi_base was declared here
        int lpi_base;
      	      ^
       drivers/irqchip/irq-gic-v3-its.c:1149:25: warning: nr_lpis may be used
        uninitialized in this function [-Wmaybe-uninitialized]
         dev->event_map.nr_lpis = nr_lpis;
      	                         ^
       drivers/irqchip/irq-gic-v3-its.c:1117:6: note: nr_lpis was declared here
        int nr_lpis;
      	      ^
      The warning is fairly benign (there is no code path that could
      actually use uninitialized variables), but let's silence it anyway
      by zeroing the variables on the error path.
      Reported-by: default avatarAlex Shi <alex.shi@linaro.org>
      Tested-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
      Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: David Daney <ddaney.cavm@gmail.com>
      Cc: Jason Cooper <jason@lakedaemon.net>
      Link: http://lkml.kernel.org/r/1443800646-8074-2-git-send-email-marc.zyngier@arm.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      c8415b94
    • Linus Torvalds's avatar
      Merge tag 'dmaengine-fix-4.3-rc4' of git://git.infradead.org/users/vkoul/slave-dma · 83dc311c
      Linus Torvalds authored
      Pull dmaengine fixes from Vinod Koul:
       "This contains fixes spread throughout the drivers, and also fixes one
        more instance of privatecnt in dmaengine.
      
        Driver fixes summary:
         - bunch of pxa_dma fixes for reuse of descriptor issue, residue and
           no-requestor
         - odd fixes in xgene, idma, sun4i and zxdma
         - at_xdmac fixes for cleaning descriptor and block addr mode"
      
      * tag 'dmaengine-fix-4.3-rc4' of git://git.infradead.org/users/vkoul/slave-dma:
        dmaengine: pxa_dma: fix residue corner case
        dmaengine: pxa_dma: fix the no-requestor case
        dmaengine: zxdma: Fix off-by-one for testing valid pchan request
        dmaengine: at_xdmac: clean used descriptor
        dmaengine: at_xdmac: change block increment addressing mode
        dmaengine: dw: properly read DWC_PARAMS register
        dmaengine: xgene-dma: Fix overwritting DMA tx ring
        dmaengine: fix balance of privatecnt
        dmaengine: sun4i: fix unsafe list iteration
        dmaengine: idma64: improve residue estimation
        dmaengine: xgene-dma: fix handling xgene_dma_get_ring_size result
        dmaengine: pxa_dma: fix initial list move
      83dc311c
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 27728bf0
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "Another week, another round of fixes.
      
        These have been brewing for a bit and in various iterations, but I
        feel pretty comfortable about the quality of them.  They fix real
        issues.  The pull request is mostly blk-mq related, and the only one
        not fixing a real bug, is the tag iterator abstraction from Christoph.
        But it's pretty trivial, and we'll need it for another fix soon.
      
        Apart from the blk-mq fixes, there's an NVMe affinity fix from Keith,
        and a single fix for xen-blkback from Roger fixing failure to free
        requests on disconnect"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        blk-mq: factor out a helper to iterate all tags for a request_queue
        blk-mq: fix racy updates of rq->errors
        blk-mq: fix deadlock when reading cpu_list
        blk-mq: avoid inserting requests before establishing new mapping
        blk-mq: fix q->mq_usage_counter access race
        blk-mq: Fix use after of free q->mq_map
        blk-mq: fix sysfs registration/unregistration race
        blk-mq: avoid setting hctx->tags->cpumask before allocation
        NVMe: Set affinity after allocating request queues
        xen/blkback: free requests on disconnection
      27728bf0
    • Dmitry Torokhov's avatar
      Revert "Input: synaptics - fix handling of disabling gesture mode" · 62d78461
      Dmitry Torokhov authored
      This reverts commit e51e3849: we
      actually do want the device to work in extended W mode, as this is the
      mode that allows us receiving multiple contact information.
      
      Cc: stable@vger.kernel.org
      62d78461