1. 26 1月, 2016 3 次提交
  2. 25 1月, 2016 16 次提交
    • M
      arm64: Fix an enum typo in mm/dump.c · b3122023
      Masanari Iida 提交于
      This patch fixes a typo in mm/dump.c:
      "MODUELS_END_NR" should be "MODULES_END_NR".
      Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      b3122023
    • C
      arm64: Honour !PTE_WRITE in set_pte_at() for kernel mappings · ac15bd63
      Catalin Marinas 提交于
      Currently, set_pte_at() only checks the software PTE_WRITE bit for user
      mappings when it sets or clears the hardware PTE_RDONLY accordingly. The
      kernel ptes are written directly without any modification, relying
      solely on the protection bits in macros like PAGE_KERNEL. However,
      modifying kernel pte attributes via pte_wrprotect() would be ignored by
      set_pte_at(). Since pte_wrprotect() does not set PTE_RDONLY (it only
      clears PTE_WRITE), the new permission is not taken into account.
      
      This patch changes set_pte_at() to adjust the read-only permission for
      kernel ptes as well. As a side effect, existing PROT_* definitions used
      for kernel ioremap*() need to include PTE_DIRTY | PTE_WRITE.
      
      (additionally, white space fix for PTE_KERNEL_ROX)
      Acked-by: NAndrey Ryabinin <aryabinin@virtuozzo.com>
      Tested-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
      Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
      Reported-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      ac15bd63
    • L
      arm64: kernel: fix architected PMU registers unconditional access · f436b2ac
      Lorenzo Pieralisi 提交于
      The Performance Monitors extension is an optional feature of the
      AArch64 architecture, therefore, in order to access Performance
      Monitors registers safely, the kernel should detect the architected
      PMU unit presence through the ID_AA64DFR0_EL1 register PMUVer field
      before accessing them.
      
      This patch implements a guard by reading the ID_AA64DFR0_EL1 register
      PMUVer field to detect the architected PMU presence and prevent accessing
      PMU system registers if the Performance Monitors extension is not
      implemented in the core.
      
      Cc: Peter Maydell <peter.maydell@linaro.org>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: <stable@vger.kernel.org>
      Fixes: 60792ad3 ("arm64: kernel: enforce pmuserenr_el0 initialization and restore")
      Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
      Reported-by: NGuenter Roeck <linux@roeck-us.net>
      Tested-by: NGuenter Roeck <linux@roeck-us.net>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      f436b2ac
    • A
      arm64: kasan: ensure that the KASAN zero page is mapped read-only · 7b1af979
      Ard Biesheuvel 提交于
      When switching from the early KASAN shadow region, which maps the
      entire shadow space read-write, to the permanent KASAN shadow region,
      which uses a zero page to shadow regions that are not subject to
      instrumentation, the lowest level table kasan_zero_pte[] may be
      reused unmodified, which means that the mappings of the zero page
      that it contains will still be read-write.
      
      So update it explicitly to map the zero page read only when we
      activate the permanent mapping.
      Acked-by: NAndrey Ryabinin <aryabinin@virtuozzo.com>
      Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
      Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      7b1af979
    • A
      arm64: hide __efistub_ aliases from kallsyms · 75feee3d
      Ard Biesheuvel 提交于
      Commit e8f3010f ("arm64/efi: isolate EFI stub from the kernel
      proper") isolated the EFI stub code from the kernel proper by prefixing
      all of its symbols with __efistub_, and selectively allowing access to
      core kernel symbols from the stub by emitting __efistub_ aliases for
      functions and variables that the stub can access legally.
      
      As an unintended side effect, these aliases are emitted into the
      kallsyms symbol table, which means they may turn up in backtraces,
      e.g.,
      
        ...
        PC is at __efistub_memset+0x108/0x200
        LR is at fixup_init+0x3c/0x48
        ...
        [<ffffff8008328608>] __efistub_memset+0x108/0x200
        [<ffffff8008094dcc>] free_initmem+0x2c/0x40
        [<ffffff8008645198>] kernel_init+0x20/0xe0
        [<ffffff8008085cd0>] ret_from_fork+0x10/0x40
      
      The backtrace in question has nothing to do with the EFI stub, but
      simply returns one of the several aliases of memset() that have been
      recorded in the kallsyms table. This is undesirable, since it may
      suggest to people who are not aware of this that the issue they are
      seeing is somehow EFI related.
      
      So hide the __efistub_ aliases from kallsyms, by emitting them as
      absolute linker symbols explicitly. The distinction between those
      and section relative symbols is completely irrelevant to these
      definitions, and to the final link we are performing when these
      definitions are being taken into account (the distinction is only
      relevant to symbols defined inside a section definition when performing
      a partial link), and so the resulting values are identical to the
      original ones. Since absolute symbols are ignored by kallsyms, this
      will result in these values to be omitted from its symbol table.
      
      After this patch, the backtrace generated from the same address looks
      like this:
        ...
        PC is at __memset+0x108/0x200
        LR is at fixup_init+0x3c/0x48
        ...
        [<ffffff8008328608>] __memset+0x108/0x200
        [<ffffff8008094dcc>] free_initmem+0x2c/0x40
        [<ffffff8008645198>] kernel_init+0x20/0xe0
        [<ffffff8008085cd0>] ret_from_fork+0x10/0x40
      Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
      Signed-off-by: NWill Deacon <will.deacon@arm.com>
      75feee3d
    • L
      Linux 4.5-rc1 · 92e963f5
      Linus Torvalds 提交于
      92e963f5
    • L
      Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus · e2464688
      Linus Torvalds 提交于
      Pull MIPS updates from Ralf Baechle:
       "This is the main pull request for MIPS for 4.5 plus some 4.4 fixes.
      
        The executive summary:
      
         - ATH79 platform improvments, use DT bindings for the ATH79 USB PHY.
         - Avoid useless rebuilds for zboot.
         - jz4780: Add NEMC, BCH and NAND device tree nodes
         - Initial support for the MicroChip's DT platform.  As all the device
           drivers are missing this is still of limited use.
         - Some Loongson3 cleanups.
         - The unavoidable whitespace polishing.
         - Reduce clock skew when synchronizing the CPU cycle counters on CPU
           startup.
         - Add MIPS R6 fixes.
         - Lots of cleanups across arch/mips as fallout from KVM.
         - Lots of minor fixes and changes for IEEE 754-2008 support to the
           FPU emulator / fp-assist software.
         - Minor Ralink, BCM47xx and bcm963xx platform support improvments.
         - Support SMP on BCM63168"
      
      * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (84 commits)
        MIPS: zboot: Add support for serial debug using the PROM
        MIPS: zboot: Avoid useless rebuilds
        MIPS: BMIPS: Enable ARCH_WANT_OPTIONAL_GPIOLIB
        MIPS: bcm63xx: nvram: Remove unused bcm63xx_nvram_get_psi_size() function
        MIPS: bcm963xx: Update bcm_tag field image_sequence
        MIPS: bcm963xx: Move extended flash address to bcm_tag header file
        MIPS: bcm963xx: Move Broadcom BCM963xx image tag data structure
        MIPS: bcm63xx: nvram: Use nvram structure definition from header file
        MIPS: bcm963xx: Add Broadcom BCM963xx board nvram data structure
        MAINTAINERS: Add KVM for MIPS entry
        MIPS: KVM: Add missing newline to kvm_err()
        MIPS: Move KVM specific opcodes into asm/inst.h
        MIPS: KVM: Use cacheops.h definitions
        MIPS: Break down cacheops.h definitions
        MIPS: Use EXCCODE_ constants with set_except_vector()
        MIPS: Update trap codes
        MIPS: Move Cause.ExcCode trap codes to mipsregs.h
        MIPS: KVM: Make kvm_mips_{init,exit}() static
        MIPS: KVM: Refactor added offsetof()s
        MIPS: KVM: Convert EXPORT_SYMBOL to _GPL
        ...
      e2464688
    • L
      Merge tag 'platform-drivers-x86-v4.5-2' of... · e1c10879
      Linus Torvalds 提交于
      Merge tag 'platform-drivers-x86-v4.5-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
      
      Pull x86 platform driver updates from Darren Hart:
       "Emergency travel prevented me from completing my final testing on this
        until today.  Nothing here that couldn't wait until RC1 fixes, but I
        thought it best to get it out sooner rather than later as it does
        contain a build warning fix.
      
        Summary:
      
        A build warning fix, MAINTAINERS cleanup, and a new DMI quirk:
      
        ideapad-laptop:
         - Add Lenovo Yoga 700 to no_hw_rfkill dmi list
      
        MAINTAINERS:
         - Combine multiple telemetry entries
      
        intel_telemetry_debugfs:
         - Fix unused warnings in telemetry debugfs"
      
      * tag 'platform-drivers-x86-v4.5-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
        ideapad-laptop: Add Lenovo Yoga 700 to no_hw_rfkill dmi list
        MAINTAINERS: Combine multiple telemetry entries
        intel_telemetry_debugfs: Fix unused warnings in telemetry debugfs
      e1c10879
    • L
      Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux · 81f05fee
      Linus Torvalds 提交于
      Pull thermal management updates from Zhang Rui:
       "The top merge commit was re-generated yesterday because two topic
        branches were dropped from this pull request in the last minute due to
        some unaddressed comments.  All the other material has been in
        linux-next for quite a while.
      
        Specifics:
      
         - Enhance thermal core to handle unexpected device cooling states
           after fresh boot and system resume.  From Zhang Rui and Chen Yu.
      
         - Several fixes and cleanups on Rockchip and RCAR thermal drivers.
           From Caesar Wang and Kuninori Morimoto.
      
         - Add Broxton support for Intel processor thermal reporting device
           driver.  From Amy Wiles"
      
      * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
        thermal: trip_point_temp_store() calls thermal_zone_device_update()
        thermal: rcar: rcar_thermal_get_temp() return error if strange temp
        thermal: rcar: check irq possibility in rcar_thermal_irq_xxx()
        thermal: rcar: check every rcar_thermal_update_temp() return value
        thermal: rcar: move rcar_thermal_dt_ids to upside
        thermal: rockchip: Support the RK3399 SoCs in thermal driver
        thermal: rockchip: Support the RK3228 SoCs in thermal driver
        dt-bindings: rockchip-thermal: Support the RK3228/RK3399 SoCs compatible
        thermal: rockchip: fix a trivial typo
        Thermal: Enable Broxton SoC thermal reporting device
        thermal: constify pch_dev_ops structure
        Thermal: do thermal zone update after a cooling device registered
        Thermal: handle thermal zone device properly during system sleep
        Thermal: initialize thermal zone device correctly
      81f05fee
    • L
      Merge tag 'for-linus-4.5-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs · c52cb431
      Linus Torvalds 提交于
      Pull 9p updates from Eric Van Hensbergen:
       "Sorry for the last minute pull request, there's was a change that
        didn't get pulled into for-next until two weeks ago and I wanted to
        give it some bake time.
      
        Summary:
      
        Rework and error handling fixes, primarily in the fscatch and fd
        transports"
      
      * tag 'for-linus-4.5-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
        fs/9p: use fscache mutex rather than spinlock
        9p: trans_fd, bail out if recv fcall if missing
        9p: trans_fd, read rework to use p9_parse_header
        net/9p: Add device name details on error
      c52cb431
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client · 00e3f5cc
      Linus Torvalds 提交于
      Pull Ceph updates from Sage Weil:
       "The two main changes are aio support in CephFS, and a series that
        fixes several issues in the authentication key timeout/renewal code.
      
        On top of that are a variety of cleanups and minor bug fixes"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
        libceph: remove outdated comment
        libceph: kill off ceph_x_ticket_handler::validity
        libceph: invalidate AUTH in addition to a service ticket
        libceph: fix authorizer invalidation, take 2
        libceph: clear messenger auth_retry flag if we fault
        libceph: fix ceph_msg_revoke()
        libceph: use list_for_each_entry_safe
        ceph: use i_size_{read,write} to get/set i_size
        ceph: re-send AIO write request when getting -EOLDSNAP error
        ceph: Asynchronous IO support
        ceph: Avoid to propagate the invalid page point
        ceph: fix double page_unlock() in page_mkwrite()
        rbd: delete an unnecessary check before rbd_dev_destroy()
        libceph: use list_next_entry instead of list_entry_next
        ceph: ceph_frag_contains_value can be boolean
        ceph: remove unused functions in ceph_frag.h
      00e3f5cc
    • L
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · 772950ed
      Linus Torvalds 提交于
      Pull SMB3 fixes from Steve French:
       "A collection of CIFS/SMB3 fixes.
      
        It includes a couple bug fixes, a few for improved debugging of
        cifs.ko and some improvements to the way cifs does key generation.
      
        I do have some additional bug fixes I expect in the next week or two
        (to address a problem found by xfstest, and some fixes for SMB3.11
        dialect, and a couple patches that just came in yesterday that I am
        reviewing)"
      
      * 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
        cifs_dbg() outputs an uninitialized buffer in cifs_readdir()
        cifs: fix race between call_async() and reconnect()
        Prepare for encryption support (first part). Add decryption and encryption key generation. Thanks to Metze for helping with this.
        cifs: Allow using O_DIRECT with cache=loose
        cifs: Make echo interval tunable
        cifs: Check uniqueid for SMB2+ and return -ESTALE if necessary
        Print IP address of unresponsive server
        cifs: Ratelimit kernel log messages
      772950ed
    • J
      ideapad-laptop: Add Lenovo Yoga 700 to no_hw_rfkill dmi list · 6b31de3e
      Josh Boyer 提交于
      Like the Yoga 900 models the Lenovo Yoga 700 does not have a
      hw rfkill switch, and trying to read the hw rfkill switch through the
      ideapad module causes it to always reported blocking breaking wifi.
      
      This commit adds the Lenovo Yoga 700 to the no_hw_rfkill dmi list, fixing
      the wifi breakage.
      
      BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1295272
      Tested-by: <dinyar.rabady+spam@gmail.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: NJosh Boyer <jwboyer@fedoraproject.org>
      Signed-off-by: NDarren Hart <dvhart@linux.intel.com>
      6b31de3e
    • S
      MAINTAINERS: Combine multiple telemetry entries · f1fc3cd8
      Souvik Kumar Chakravarty 提交于
      This patch combines all the telemetry file entries in MAINTAINERS via
      wildcard.
      Signed-off-by: NSouvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>
      Signed-off-by: NDarren Hart <dvhart@linux.intel.com>
      f1fc3cd8
    • S
      intel_telemetry_debugfs: Fix unused warnings in telemetry debugfs · 7885f2f9
      Souvik Kumar Chakravarty 提交于
      This patch fixes compile time warnings when CONFIG_PM_SLEEP
      is undefined. In this case sleep related counters are unused.
      Signed-off-by: NSouvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>
      Signed-off-by: NDarren Hart <dvhart@linux.intel.com>
      7885f2f9
    • C
      vmstat: Remove BUG_ON from vmstat_update · 587198ba
      Christoph Lameter 提交于
      If we detect that there is nothing to do just set the flag and do not
      check if it was already set before.  Races really do not matter.  If the
      flag is set by any code then the shepherd will start dealing with the
      situation and reenable the vmstat workers when necessary again.
      
      Since commit 0eb77e98 ("vmstat: make vmstat_updater deferrable again
      and shut down on idle") quiet_vmstat might update cpu_stat_off and mark
      a particular cpu to be handled by vmstat_shepherd.  This might trigger a
      VM_BUG_ON in vmstat_update because the work item might have been
      sleeping during the idle period and see the cpu_stat_off updated after
      the wake up.  The VM_BUG_ON is therefore misleading and no more
      appropriate.  Moreover it doesn't really suite any protection from real
      bugs because vmstat_shepherd will simply reschedule the vmstat_work
      anytime it sees a particular cpu set or vmstat_update would do the same
      from the worker context directly.  Even when the two would race the
      result wouldn't be incorrect as the counters update is fully idempotent.
      Reported-by: NSasha Levin <sasha.levin@oracle.com>
      Signed-off-by: NChristoph Lameter <cl@linux.com>
      Acked-by: NMichal Hocko <mhocko@suse.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      587198ba
  3. 24 1月, 2016 21 次提交