1. 04 5月, 2017 4 次提交
    • E
      ubifs: check for consistent encryption contexts in ubifs_lookup() · 413d5a9e
      Eric Biggers 提交于
      As ext4 and f2fs do, ubifs should check for consistent encryption
      contexts during ->lookup() in an encrypted directory.  This protects
      certain users of filesystem encryption against certain types of offline
      attacks.
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
      413d5a9e
    • E
      f2fs: sync f2fs_lookup() with ext4_lookup() · faac7fd9
      Eric Biggers 提交于
      As for ext4, now that fscrypt_has_permitted_context() correctly handles
      the case where we have the key for the parent directory but not the
      child, f2fs_lookup() no longer has to work around it.  Also add the same
      warning message that ext4 uses.
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
      faac7fd9
    • E
      ext4: remove "nokey" check from ext4_lookup() · 8c68084b
      Eric Biggers 提交于
      Now that fscrypt_has_permitted_context() correctly handles the case
      where we have the key for the parent directory but not the child, we
      don't need to try to work around this in ext4_lookup().
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
      8c68084b
    • E
      fscrypt: fix context consistency check when key(s) unavailable · 272f98f6
      Eric Biggers 提交于
      To mitigate some types of offline attacks, filesystem encryption is
      designed to enforce that all files in an encrypted directory tree use
      the same encryption policy (i.e. the same encryption context excluding
      the nonce).  However, the fscrypt_has_permitted_context() function which
      enforces this relies on comparing struct fscrypt_info's, which are only
      available when we have the encryption keys.  This can cause two
      incorrect behaviors:
      
      1. If we have the parent directory's key but not the child's key, or
         vice versa, then fscrypt_has_permitted_context() returned false,
         causing applications to see EPERM or ENOKEY.  This is incorrect if
         the encryption contexts are in fact consistent.  Although we'd
         normally have either both keys or neither key in that case since the
         master_key_descriptors would be the same, this is not guaranteed
         because keys can be added or removed from keyrings at any time.
      
      2. If we have neither the parent's key nor the child's key, then
         fscrypt_has_permitted_context() returned true, causing applications
         to see no error (or else an error for some other reason).  This is
         incorrect if the encryption contexts are in fact inconsistent, since
         in that case we should deny access.
      
      To fix this, retrieve and compare the fscrypt_contexts if we are unable
      to set up both fscrypt_infos.
      
      While this slightly hurts performance when accessing an encrypted
      directory tree without the key, this isn't a case we really need to be
      optimizing for; access *with* the key is much more important.
      Furthermore, the performance hit is barely noticeable given that we are
      already retrieving the fscrypt_context and doing two keyring searches in
      fscrypt_get_encryption_info().  If we ever actually wanted to optimize
      this case we might start by caching the fscrypt_contexts.
      
      Cc: stable@vger.kernel.org # 4.0+
      Signed-off-by: NEric Biggers <ebiggers@google.com>
      Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
      272f98f6
  2. 30 4月, 2017 4 次提交
  3. 10 4月, 2017 5 次提交
    • L
      Linux 4.11-rc6 · 39da7c50
      Linus Torvalds 提交于
      39da7c50
    • L
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · 84ced7fd
      Linus Torvalds 提交于
      Pull CIFS fixes from Steve French:
       "This is a set of CIFS/SMB3 fixes for stable.
      
        There is another set of four SMB3 reconnect fixes for stable in
        progress but they are still being reviewed/tested, so didn't want to
        wait any longer to send these five below"
      
      * 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
        Reset TreeId to zero on SMB2 TREE_CONNECT
        CIFS: Fix build failure with smb2
        Introduce cifs_copy_file_range()
        SMB3: Rename clone_range to copychunk_range
        Handle mismatched open calls
      84ced7fd
    • L
      Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm · 462e9a35
      Linus Torvalds 提交于
      Pull ARM fixes from Russell King:
       "A number of ARM fixes:
      
         - prevent oopses caused by dma_get_sgtable() and declared DMA
           coherent memory
      
         - fix boot failure on nommu caused by ID_PFR1 access
      
         - a number of kprobes fixes from Jon Medhurst and Masami Hiramatsu"
      
      * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
        ARM: 8665/1: nommu: access ID_PFR1 only if CPUID scheme
        ARM: dma-mapping: disallow dma_get_sgtable() for non-kernel managed memory
        arm: kprobes: Align stack to 8-bytes in test code
        arm: kprobes: Fix the return address of multiple kretprobes
        arm: kprobes: Skip single-stepping in recursing path if possible
        arm: kprobes: Allow to handle reentered kprobe on single-stepping
      462e9a35
    • L
      Merge tag 'driver-core-4.11-rc6' of... · 5b50be74
      Linus Torvalds 提交于
      Merge tag 'driver-core-4.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
      
      Pull driver core fixes from Greg KH:
       "Here are 3 small fixes for 4.11-rc6.
      
        One resolves a reported issue with sysfs files that NeilBrown found,
        one is a documenatation fix for the stable kernel rules, and the last
        is a small MAINTAINERS file update for kernfs"
      
      * tag 'driver-core-4.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        MAINTAINERS: separate out kernfs maintainership
        sysfs: be careful of error returns from ops->show()
        Documentation: stable-kernel-rules: fix stable-tag format
      5b50be74
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      Merge tag 'staging-4.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · 62e1fd08
      Linus Torvalds 提交于
      Pull staging/IIO driver rfixes from Greg KH:
       "Here are a number of small IIO and staging driver fixes for 4.11-rc6.
        Nothing big here, just iio fixes for reported issues, and an ashmem
        fix for a very old bug that has been reported by a number of Android
        vendors"
      
      * tag 'staging-4.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        staging: android: ashmem: lseek failed due to no FMODE_LSEEK.
        iio: hid-sensor-attributes: Fix sensor property setting failure.
        iio: accel: hid-sensor-accel-3d: Fix duplicate scan index error
        iio: core: Fix IIO_VAL_FRACTIONAL_LOG2 for negative values
        iio: st_pressure: initialize lps22hb bootime
        iio: bmg160: reset chip when probing
        iio: cros_ec_sensors: Fix return value to get raw and calibbias data.
      62e1fd08
  4. 09 4月, 2017 7 次提交
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 2a610b8a
      Linus Torvalds 提交于
      Pull VFS fixes from Al Viro:
       "statx followup fixes and a fix for stack-smashing on alpha"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        alpha: fix stack smashing in old_adjtimex(2)
        statx: Include a mask for stx_attributes in struct statx
        statx: Reserve the top bit of the mask for future struct expansion
        xfs: report crtime and attribute flags to statx
        ext4: Add statx support
        statx: optimize copy of struct statx to userspace
        statx: remove incorrect part of vfs_statx() comment
        statx: reject unknown flags when using NULL path
        Documentation/filesystems: fix documentation for ->getattr()
      2a610b8a
    • L
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 78d91a75
      Linus Torvalds 提交于
      Pull block fixes from Jens Axboe:
       "Here's a pull request for 4.11-rc, fixing a set of issues mostly
        centered around the new scheduling framework. These have been brewing
        for a while, but split up into what we absolutely need in 4.11, and
        what we can defer until 4.12. These are well tested, on both single
        queue and multiqueue setups, and with and without shared tags. They
        fix several hangs that have happened in testing.
      
        This is obviously larger than I would have preferred at this point in
        time, but I don't think we can shave much off this and still get the
        desired results.
      
        In detail, this pull request contains:
      
         - a set of five fixes for NVMe, mostly from Christoph and one from
           Roland.
      
         - a series from Bart, fixing issues with dm-mq and SCSI shared tags
           and scheduling. Note that one of those patches commit messages may
           read like an optimization, but it is in fact an important fix for
           queue restarts in particular.
      
         - a series from Omar, most importantly fixing a hang with multiple
           hardware queues when we fail to get a driver tag. Another important
           fix in there is for resizing hardware queues, which nbd does when
           handling multiple sockets for one connection.
      
         - fixing an imbalance in putting the ctx for hctx request allocations
           from Minchan"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        blk-mq: Restart a single queue if tag sets are shared
        dm rq: Avoid that request processing stalls sporadically
        scsi: Avoid that SCSI queues get stuck
        blk-mq: Introduce blk_mq_delay_run_hw_queue()
        blk-mq: remap queues when adding/removing hardware queues
        blk-mq-sched: fix crash in switch error path
        blk-mq-sched: set up scheduler tags when bringing up new queues
        blk-mq-sched: refactor scheduler initialization
        blk-mq: use the right hctx when getting a driver tag fails
        nvmet: fix byte swap in nvmet_parse_io_cmd
        nvmet: fix byte swap in nvmet_execute_write_zeroes
        nvmet: add missing byte swap in nvmet_get_smart_log
        nvme: add missing byte swap in nvme_setup_discard
        nvme: Correct NVMF enum values to match NVMe-oF rev 1.0
        block: do not put mq context in blk_mq_alloc_request_hctx
      78d91a75
    • L
      Merge tag 'pinctrl-v4.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · c3df1c7c
      Linus Torvalds 提交于
      Pull pin control fix from Linus Walleij:
       "This late fix for pin control is hopefully the last I send this cycle.
      
        The problem was detected early in the v4.11 release cycle and there
        has been some back and forth on how to solve it. Sadly the proper fix
        arrives late, but at least not too late.
      
        An issue was detected with pin control on the Freescale i.MX after the
        refactorings for more general group and function handling.
      
        We now have the proper fix for this"
      
      * tag 'pinctrl-v4.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
        pinctrl: core: Fix pinctrl_register_and_init() with pinctrl_enable()
      c3df1c7c
    • L
      Merge tag 'powerpc-4.11-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 894ca30c
      Linus Torvalds 提交于
      Pull powerpc fixes from Michael Ellerman:
       "Some more powerpc fixes for 4.11:
      
        Headed to stable:
      
         - disable HFSCR[TM] if TM is not supported, fixes a potential host
           kernel crash triggered by a hostile guest, but only in
           configurations that no one uses
      
         - don't try to fix up misaligned load-with-reservation instructions
      
         - fix flush_(d|i)cache_range() called from modules on little endian
           kernels
      
         - add missing global TLB invalidate if cxl is active
      
         - fix missing preempt_disable() in crc32c-vpmsum
      
        And a fix for selftests build changes that went in this release:
      
         - selftests/powerpc: Fix standalone powerpc build
      
        Thanks to: Benjamin Herrenschmidt, Frederic Barrat, Oliver O'Halloran,
        Paul Mackerras"
      
      * tag 'powerpc-4.11-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/crypto/crc32c-vpmsum: Fix missing preempt_disable()
        powerpc/mm: Add missing global TLB invalidate if cxl is active
        powerpc/64: Fix flush_(d|i)cache_range() called from modules
        powerpc: Don't try to fix up misaligned load-with-reservation instructions
        powerpc: Disable HFSCR[TM] if TM is not supported
        selftests/powerpc: Fix standalone powerpc build
      894ca30c
    • C
      mm/mempolicy.c: fix error handling in set_mempolicy and mbind. · cf01fb99
      Chris Salls 提交于
      In the case that compat_get_bitmap fails we do not want to copy the
      bitmap to the user as it will contain uninitialized stack data and leak
      sensitive data.
      Signed-off-by: NChris Salls <salls@cs.ucsb.edu>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      cf01fb99
    • L
      sysctl: report EINVAL if value is larger than UINT_MAX for proc_douintvec · 425fffd8
      Liping Zhang 提交于
      Currently, inputting the following command will succeed but actually the
      value will be truncated:
      
        # echo 0x12ffffffff > /proc/sys/net/ipv4/tcp_notsent_lowat
      
      This is not friendly to the user, so instead, we should report error
      when the value is larger than UINT_MAX.
      
      Fixes: e7d316a0 ("sysctl: handle error writing UINT_MAX to u32 fields")
      Signed-off-by: NLiping Zhang <zlpnobody@gmail.com>
      Cc: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Eric W. Biederman <ebiederm@xmission.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      425fffd8
    • T
      MAINTAINERS: separate out kernfs maintainership · 27f395b8
      Tejun Heo 提交于
      Separate out kernfs from driver core and add myself as a
      co-maintainer.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      27f395b8
  5. 08 4月, 2017 20 次提交