1. 29 9月, 2017 6 次提交
    • L
      Merge tag 'pm-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 74de8187
      Linus Torvalds 提交于
      Pull power management fixes from Rafael Wysocki:
       "These fix a deadlock in the operating performance points (OPP)
        framework introduced during the 4.11 cycle, more issues with duplicate
        device objects for cpufreq-dt and cpufreq documentation.
      
        Specifics:
      
         - Fix a deadlock in the operating performance points (OPP) framework
           caused by a notifier callback taking a lock that's already held by
           its caller (Viresh Kumar).
      
         - Prevent the ti-cpufreq and cpufreq-dt-platdev drivers from
           attempting to register conflicting device objects which triggers a
           warning from sysfs (Suniel Mahesh).
      
         - Drop a stale reference to a piece of intel_pstate documentation
           that's not in the tree any more (Rafael Wysocki)"
      
      * tag 'pm-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        cpufreq: docs: Drop intel-pstate.txt from index.txt
        cpufreq: dt: Fix sysfs duplicate filename creation for platform-device
        PM / OPP: Call notifier without holding opp_table->lock
      74de8187
    • L
      Merge tag 'xfs-4.14-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 02a2b053
      Linus Torvalds 提交于
      Pull xfs fixes from Darrick Wong:
      
       - fix various problems with the copy-on-write extent maps getting freed
         at the wrong time
      
       - fix printk format specifier problems
      
       - report zeroing operation outcomes instead of dropping them on the
         floor
      
       - fix some crashes when dio operations partially fail
      
       - fix a race condition between unwritten extent conversion & dio read
      
       - fix some incorrect tests in the inode log item processing
      
       - correct the delayed allocation space reservations on rmap filesystems
      
       - fix some problems checking for dax support
      
      * tag 'xfs-4.14-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
        xfs: revert "xfs: factor rmap btree size into the indlen calculations"
        xfs: Capture state of the right inode in xfs_iflush_done
        xfs: perag initialization should only touch m_ag_max_usable for AG 0
        xfs: update i_size after unwritten conversion in dio completion
        iomap_dio_rw: Allocate AIO completion queue before submitting dio
        xfs: validate bdev support for DAX inode flag
        xfs: remove redundant re-initialization of total_nr_pages
        xfs: Output warning message when discard option was enabled even though the device does not support discard
        xfs: report zeroed or not correctly in xfs_zero_range()
        xfs: kill meaningless variable 'zero'
        fs/xfs: Use %pS printk format for direct addresses
        xfs: evict CoW fork extents when performing finsert/fcollapse
        xfs: don't unconditionally clear the reflink flag on zero-block files
      02a2b053
    • L
      Revert "Bluetooth: Add option for disabling legacy ioctl interfaces" · e49aa15e
      Linus Torvalds 提交于
      This reverts commit dbbccdc4.
      
      It turns out that the "legacy" users aren't so legacy at all, and that
      turning off the legacy ioctl will break the current Qt bluetooth stack
      for bluetooth LE devices that were released just a couple of months ago.
      
      So it's simply not true that this was a legacy interface that hasn't
      been needed and is only limited to old legacy BT devices.  Because I
      actually read Kconfig help messages, and actively try to turn off
      features that I don't need, I turned the option off.
      
      Then I spent _way_ too much time debugging BLE issues until I realized
      that it wasn't the Qt and subsurface development that had broken one of
      my dive computer BLE downloads, but simply my broken kernel config.
      
      Maybe in a decade it will be true that this is a legacy interface.  And
      maybe with a better help-text and correct dependencies, this kind of
      legacy removal might be acceptable.  But as things are right now both
      the commit message and the Kconfig help text were misleading, and the
      Kconfig option had the wrong dependenencies.
      
      There's no reason to keep that broken Kconfig option in the tree.
      
      Cc: Marcel Holtmann <marcel@holtmann.org>
      Cc: Johan Hedberg <johan.hedberg@intel.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e49aa15e
    • L
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma · 91735832
      Linus Torvalds 提交于
      Pull rdma fixes from Doug Ledford:
       "Second -rc update for 4.14.
      
        Both Mellanox and Intel had a series of -rc fixes that landed this
        week. The Mellanox bunch is spread throughout the stack and not just
        in their driver, where as the Intel bunch was mostly in the hfi1
        driver. And, several of the fixes in the hfi1 driver were more than
        just simple 5 line fixes. As a result, the hfi1 driver fixes has a
        sizable LOC count.
      
        Everything else is as one would expect in an RC cycle in terms of LOC
        count. One item that might jump out and make you think "That's not an
        rc item" is the fix that corrects a typo. But, that change fixes a
        typo in a user visible API that was just added in this merge window,
        so if we fix it now, we can fix it. If we don't, the typo is in the
        API forever. Another that might not appear to be a fix at first glance
        is the Simplify mlx5_ib_cont_pages patch, but the simplification
        allows them to fix a bug in the existing function whenever the length
        of an SGE exceeded page size. We also had to revert one patch from the
        merge window that was wrong.
      
        Summary:
      
         - a few core fixes
         - a few ipoib fixes
         - a few mlx5 fixes
         - a 7-patch hfi1 related series"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
        IB/hfi1: Unsuccessful PCIe caps tuning should not fail driver load
        IB/hfi1: On error, fix use after free during user context setup
        Revert "IB/ipoib: Update broadcast object if PKey value was changed in index 0"
        IB/hfi1: Return correct value in general interrupt handler
        IB/hfi1: Check eeprom config partition validity
        IB/hfi1: Only reset QSFP after link up and turn off AOC TX
        IB/hfi1: Turn off AOC TX after offline substates
        IB/mlx5: Fix NULL deference on mlx5_ib_update_xlt failure
        IB/mlx5: Simplify mlx5_ib_cont_pages
        IB/ipoib: Fix inconsistency with free_netdev and free_rdma_netdev
        IB/ipoib: Fix sysfs Pkey create<->remove possible deadlock
        IB: Correct MR length field to be 64-bit
        IB/core: Fix qp_sec use after free access
        IB/core: Fix typo in the name of the tag-matching cap struct
      91735832
    • R
      Merge branches 'pm-opp' and 'pm-cpufreq' · abeb19a2
      Rafael J. Wysocki 提交于
      * pm-opp:
        PM / OPP: Call notifier without holding opp_table->lock
      
      * pm-cpufreq:
        cpufreq: docs: Drop intel-pstate.txt from index.txt
        cpufreq: dt: Fix sysfs duplicate filename creation for platform-device
      abeb19a2
    • L
      Merge tag 'seccomp-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux · 26e811cd
      Linus Torvalds 提交于
      Pull seccomp fix from Kees Cook:
       "Fix refcounting bug in CRIU interface, noticed by Chris Salls (Oleg &
        Tycho)"
      
      * tag 'seccomp-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
        seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter()
      26e811cd
  2. 28 9月, 2017 4 次提交
    • O
      seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter() · 66a733ea
      Oleg Nesterov 提交于
      As Chris explains, get_seccomp_filter() and put_seccomp_filter() can end
      up using different filters. Once we drop ->siglock it is possible for
      task->seccomp.filter to have been replaced by SECCOMP_FILTER_FLAG_TSYNC.
      
      Fixes: f8e529ed ("seccomp, ptrace: add support for dumping seccomp filters")
      Reported-by: NChris Salls <chrissalls5@gmail.com>
      Cc: stable@vger.kernel.org # needs s/refcount_/atomic_/ for v4.12 and earlier
      Signed-off-by: NOleg Nesterov <oleg@redhat.com>
      [tycho: add __get_seccomp_filter vs. open coding refcount_inc()]
      Signed-off-by: NTycho Andersen <tycho@docker.com>
      [kees: tweak commit log]
      Signed-off-by: NKees Cook <keescook@chromium.org>
      66a733ea
    • R
      cpufreq: docs: Drop intel-pstate.txt from index.txt · 8aba2333
      Rafael J. Wysocki 提交于
      Commit 33fc30b4 (cpufreq: intel_pstate: Document the current
      behavior and user interface) dropped the intel-pstate.txt file
      from Documentation/cpu-freq/, but it did not update the index.txt
      file in there accordingly, so do that now.
      
      Fixes: 33fc30b4 (cpufreq: intel_pstate: Document the current behavior and user interface)
      Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
      8aba2333
    • L
      Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs · 9cd6681c
      Linus Torvalds 提交于
      Pull quota and isofs fixes from Jan Kara:
       "Two quota fixes (fallout of the quota locking changes) and an isofs
        build fix"
      
      * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
        quota: Fix quota corruption with generic/232 test
        isofs: fix build regression
        quota: add missing lock into __dquot_transfer()
      9cd6681c
    • L
      Merge tag 'linux-kselftest-4.14-rc3-fixes' of... · 225d3b67
      Linus Torvalds 提交于
      Merge tag 'linux-kselftest-4.14-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
      
      Pull kselftest fixes from Shuah Khan:
       "This update consists of:
      
         - fixes to several existing tests
      
         - a test for regression introduced by b9470c27 ("inet: kill
           smallest_size and smallest_port")
      
         - seccomp support for glibc 2.26 siginfo_t.h
      
         - fixes to kselftest framework and tests to run make O=dir use-case
      
         - fixes to silence unnecessary test output to de-clutter test results"
      
      * tag 'linux-kselftest-4.14-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (28 commits)
        selftests: timers: set-timer-lat: Fix hang when testing unsupported alarms
        selftests: timers: set-timer-lat: fix hang when std out/err are redirected
        selftests/memfd: correct run_tests.sh permission
        selftests/seccomp: Support glibc 2.26 siginfo_t.h
        selftests: futex: Makefile: fix for loops in targets to run silently
        selftests: Makefile: fix for loops in targets to run silently
        selftests: mqueue: Use full path to run tests from Makefile
        selftests: futex: copy sub-dir test scripts for make O=dir run
        selftests: lib.mk: copy test scripts and test files for make O=dir run
        selftests: sync: kselftest and kselftest-clean fail for make O=dir case
        selftests: sync: use TEST_CUSTOM_PROGS instead of TEST_PROGS
        selftests: lib.mk: add TEST_CUSTOM_PROGS to allow custom test run/install
        selftests: watchdog: fix to use TEST_GEN_PROGS and remove clean
        selftests: lib.mk: fix test executable status check to use full path
        selftests: Makefile: clear LDFLAGS for make O=dir use-case
        selftests: lib.mk: kselftest and kselftest-clean fail for make O=dir case
        Makefile: kselftest and kselftest-clean fail for make O=dir case
        selftests/net: msg_zerocopy enable build with older kernel headers
        selftests: actually run the various net selftests
        selftest: add a reuseaddr test
        ...
      225d3b67
  3. 27 9月, 2017 17 次提交
  4. 26 9月, 2017 13 次提交
    • I
    • E
      x86/fpu: Use using_compacted_format() instead of open coded X86_FEATURE_XSAVES · 738f48cb
      Eric Biggers 提交于
      This is the canonical method to use.
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-11-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      738f48cb
    • E
      x86/fpu: Use validate_xstate_header() to validate the xstate_header in copy_user_to_xstate() · 98c0fad9
      Eric Biggers 提交于
      Tighten the checks in copy_user_to_xstate().
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-10-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      98c0fad9
    • E
      x86/fpu: Eliminate the 'xfeatures' local variable in copy_user_to_xstate() · 3d703477
      Eric Biggers 提交于
      We now have this field in hdr.xfeatures.
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-9-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      3d703477
    • E
      x86/fpu: Copy the full header in copy_user_to_xstate() · af2c4322
      Eric Biggers 提交于
      This is in preparation to verify the full xstate header as supplied by user-space.
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-8-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      af2c4322
    • E
      x86/fpu: Use validate_xstate_header() to validate the xstate_header in copy_kernel_to_xstate() · af95774b
      Eric Biggers 提交于
      Tighten the checks in copy_kernel_to_xstate().
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-7-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      af95774b
    • E
      x86/fpu: Eliminate the 'xfeatures' local variable in copy_kernel_to_xstate() · b89eda48
      Eric Biggers 提交于
      We have this information in the xstate_header.
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-6-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      b89eda48
    • E
      x86/fpu: Copy the full state_header in copy_kernel_to_xstate() · 80d8ae86
      Eric Biggers 提交于
      This is in preparation to verify the full xstate header as supplied by user-space.
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-5-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      80d8ae86
    • E
      x86/fpu: Use validate_xstate_header() to validate the xstate_header in __fpu__restore_sig() · b11e2e18
      Eric Biggers 提交于
      Tighten the checks in __fpu__restore_sig() and update comments.
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-4-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      b11e2e18
    • E
      x86/fpu: Use validate_xstate_header() to validate the xstate_header in xstateregs_set() · cf9df81b
      Eric Biggers 提交于
      Tighten the checks in xstateregs_set().
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-3-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      cf9df81b
    • E
      x86/fpu: Introduce validate_xstate_header() · e63e5d5c
      Eric Biggers 提交于
      Move validation of user-supplied xstate_header into a helper function,
      in preparation of calling it from both the ptrace and sigreturn syscall
      paths.
      
      The new function also considers it to be an error if *any* reserved bits
      are set, whereas before we were just clearing most of them silently.
      
      This should reduce the chance of bugs that fail to correctly validate
      user-supplied XSAVE areas.  It also will expose any broken userspace
      programs that set the other reserved bits; this is desirable because
      such programs will lose compatibility with future CPUs and kernels if
      those bits are ever used for anything.  (There shouldn't be any such
      programs, and in fact in the case where the compacted format is in use
      we were already validating xfeatures.  But you never know...)
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Kees Cook <keescook@chromium.org>
      Cc: Kevin Hao <haokexin@gmail.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Michael Halcrow <mhalcrow@google.com>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Wanpeng Li <wanpeng.li@hotmail.com>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Cc: kernel-hardening@lists.openwall.com
      Link: http://lkml.kernel.org/r/20170924105913.9157-2-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      e63e5d5c
    • I
      x86/fpu: Rename fpu__activate_fpstate_read/write() to fpu__prepare_[read|write]() · 369a036d
      Ingo Molnar 提交于
      As per the new nomenclature we don't 'activate' the FPU state
      anymore, we initialize it. So drop the _activate_fpstate name
      from these functions, which were a bit of a mouthful anyway,
      and name them:
      
      	fpu__prepare_read()
      	fpu__prepare_write()
      
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NIngo Molnar <mingo@kernel.org>
      369a036d
    • I
      x86/fpu: Rename fpu__activate_curr() to fpu__initialize() · 2ce03d85
      Ingo Molnar 提交于
      Rename this function to better express that it's all about
      initializing the FPU state of a task which goes hand in hand
      with the fpu::initialized field.
      
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Eric Biggers <ebiggers3@gmail.com>
      Cc: Fenghua Yu <fenghua.yu@intel.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Rik van Riel <riel@redhat.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
      Link: http://lkml.kernel.org/r/20170923130016.21448-33-mingo@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      2ce03d85
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