1. 21 Dec, 2013 2 commits
  2. 19 Dec, 2013 5 commits
  3. 17 Dec, 2013 1 commit
  4. 16 Dec, 2013 10 commits
  5. 06 Dec, 2013 4 commits
    • Andrey Vagin's avatar
      block: fix memory leaks on unplugging block device · 85157366
      Andrey Vagin authored
      All objects, which are allocated in blk_mq_register_disk, must be
      released in blk_mq_unregister_disk.
      
      I use a KVM virtual machine and virtio disk to reproduce this issue.
      
      kmemleak: 18 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
      $ cat /sys/kernel/debug/kmemleak | head -n 30
      unreferenced object 0xffff8800b6636150 (size 8):
        comm "kworker/0:2", pid 65, jiffies 4294809903 (age 86.358s)
        hex dump (first 8 bytes):
          76 69 72 74 69 6f 34 00                          virtio4.
        backtrace:
          [<ffffffff8165d41e>] kmemleak_alloc+0x4e/0xb0
          [<ffffffff8118cfc5>] __kmalloc_track_caller+0xf5/0x260
          [<ffffffff81155b11>] kstrdup+0x31/0x60
          [<ffffffff812242be>] sysfs_new_dirent+0x2e/0x140
          [<ffffffff81224678>] create_dir+0x38/0xe0
          [<ffffffff812249e3>] sysfs_create_dir_ns+0x73/0xc0
          [<ffffffff8130dfa9>] kobject_add_internal+0xc9/0x340
          [<ffffffff8130e535>] kobject_add+0x65/0xb0
          [<ffffffff813f34f8>] device_add+0x128/0x660
          [<ffffffff813f3a4a>] device_register+0x1a/0x20
          [<ffffffff813ae6f8>] register_virtio_device+0x98/0xe0
          [<ffffffff813b0cce>] virtio_pci_probe+0x12e/0x1c0
          [<ffffffff81340675>] local_pci_probe+0x45/0xa0
          [<ffffffff81341a51>] pci_device_probe+0x121/0x130
          [<ffffffff813f67f7>] driver_probe_device+0x87/0x390
          [<ffffffff813f6b3b>] __device_attach+0x3b/0x40
      unreferenced object 0xffff8800b65aa1d8 (size 144):
      
      Fixes: 320ae51f (blk-mq: new multi-queue block IO queueing mechanism)
      Cc: Jens Axboe <axboe@kernel.dk>
      Signed-off-by: default avatarAndrey Vagin <avagin@openvz.org>
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      85157366
    • Linus Torvalds's avatar
      Merge tag 'pm-3.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 002acf1f
      Linus Torvalds authored
      Pull power management fixes from Rafael Wysocki:
      
       - cpufreq regression fix from Bjørn Mork restoring the pre-3.12
         behavior of the framework during system suspend/hibernation to avoid
         garbage sysfs files from being left behind in case of a suspend error
      
       - PNP regression fix to restore the correct states of devices after
         resume from hibernation broken in 3.12.  From Dmitry Torokhov.
      
       - cpuidle fix to prevent cpuidle device unregistration from crashing
         due to a NULL pointer dereference if cpuidle has been disabled from
         the kernel command line.  From Konrad Rzeszutek Wilk.
      
       - intel_idle fix for the C6 state definition on Intel Avoton/Rangeley
         processors from Arne Bockholdt.
      
       - Power capping framework fix to make the energy_uj sysfs attribute
         work in accordance with the documentation.  From Srinivas Pandruvada.
      
       - epoll fix to make it ignore the EPOLLWAKEUP flag if the kernel has
         been compiled with CONFIG_PM_SLEEP unset (in which case that flag
         should not have any effect).  From Amit Pundir.
      
       - cpufreq fix to prevent governor sysfs files from being lost over
         system suspend/resume in some (arguably unusual) situations.  From
         Viresh Kumar.
      
      * tag 'pm-3.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        PowerCap: Fix mode for energy counter
        PNP: fix restoring devices after hibernation
        cpuidle: Check for dev before deregistering it.
        epoll: drop EPOLLWAKEUP if PM_SLEEP is disabled
        cpufreq: fix garbage kobjects on errors during suspend/resume
        cpufreq: suspend governors on system suspend/hibernate
        intel_idle: Fixed C6 state on Avoton/Rangeley processors
      002acf1f
    • Rafael J. Wysocki's avatar
      Merge branches 'pm-epoll', 'pnp' and 'powercap' · 8e703009
      Rafael J. Wysocki authored
      * pm-epoll:
        epoll: drop EPOLLWAKEUP if PM_SLEEP is disabled
      
      * pnp:
        PNP: fix restoring devices after hibernation
      
      * powercap:
        PowerCap: Fix mode for energy counter
      8e703009
    • Rafael J. Wysocki's avatar
      Merge branches 'pm-cpuidle' and 'pm-cpufreq' · 7cdcec99
      Rafael J. Wysocki authored
      * pm-cpuidle:
        cpuidle: Check for dev before deregistering it.
        intel_idle: Fixed C6 state on Avoton/Rangeley processors
      
      * pm-cpufreq:
        cpufreq: fix garbage kobjects on errors during suspend/resume
        cpufreq: suspend governors on system suspend/hibernate
      7cdcec99
  6. 05 Dec, 2013 13 commits
  7. 04 Dec, 2013 5 commits
    • H. Peter Anvin's avatar
      x86, bitops: Correct the assembly constraints to testing bitops · e0f6dec3
      H. Peter Anvin authored
      In checkin:
      
      0c44c2d0 x86: Use asm goto to implement better modify_and_test() functions
      
      the various functions which do modify and test were unified and
      optimized using "asm goto".  However, this change missed the detail
      that the bitops require an "Ir" constraint rather than an "er"
      constraint ("I" = integer constant from 0-31, "e" = signed 32-bit
      integer constant).  This would cause code to miscompile if these
      functions were used on constant bit positions 32-255 and the build to
      fail if used on constant bit positions above 255.
      
      Add the constraints as a parameter to the GEN_BINARY_RMWcc() macro to
      avoid this problem.
      Reported-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
      Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Link: http://lkml.kernel.org/r/529E8719.4070202@zytor.com
      e0f6dec3
    • Helge Deller's avatar
      nfs: fix do_div() warning by instead using sector_div() · 3873d064
      Helge Deller authored
      When compiling a 32bit kernel with CONFIG_LBDAF=n the compiler complains like
      shown below.  Fix this warning by instead using sector_div() which is provided
      by the kernel.h header file.
      
      fs/nfs/blocklayout/extents.c: In function ‘normalize’:
      include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast [enabled by default]
      fs/nfs/blocklayout/extents.c:47:13: note: in expansion of macro ‘do_div’
      nfs/blocklayout/extents.c:47:2: warning: right shift count >= width of type [enabled by default]
      fs/nfs/blocklayout/extents.c:47:2: warning: passing argument 1 of ‘__div64_32’ from incompatible pointer type [enabled by default]
      include/asm-generic/div64.h:35:17: note: expected ‘uint64_t *’ but argument is of type ‘sector_t *’
       extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
      Signed-off-by: default avatarHelge Deller <deller@gmx.de>
      Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
      3873d064
    • Trond Myklebust's avatar
    • Trond Myklebust's avatar
      NFSv4.1: Prevent a 3-way deadlock between layoutreturn, open and state recovery · f22e5edd
      Trond Myklebust authored
      Andy Adamson reports:
      
      The state manager is recovering expired state and recovery OPENs are being
      processed. If kswapd is pruning inodes at the same time, a deadlock can occur
      when kswapd calls evict_inode on an NFSv4.1 inode with a layout, and the
      resultant layoutreturn gets an error that the state mangager is to handle,
      causing the layoutreturn to wait on the (NFS client) cl_rpcwaitq.
      
      At the same time an open is waiting for the inode deletion to complete in
      __wait_on_freeing_inode.
      
      If the open is either the open called by the state manager, or an open from
      the same open owner that is holding the NFSv4 sequence id which causes the
      OPEN from the state manager to wait for the sequence id on the Seqid_waitqueue,
      then the state is deadlocked with kswapd.
      
      The fix is simply to have layoutreturn ignore all errors except NFS4ERR_DELAY.
      We already know that layouts are dropped on all server reboots, and that
      it has to be coded to deal with the "forgetful client model" that doesn't
      send layoutreturns.
      Reported-by: default avatarAndy Adamson <andros@netapp.com>
      Link: http://lkml.kernel.org/r/1385402270-14284-1-git-send-email-andros@netapp.comSigned-off-by: default avatarTrond Myklebust <Trond.Myklebust@primarydata.com>
      f22e5edd
    • Linus Torvalds's avatar
      Merge tag 'gpio-v3.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio · 8ecffd79
      Linus Torvalds authored
      Pull GPIO fixes from Linus Walleij:
       "Here are a few more GPIO patches, we're a bit noisy for being the GPIO
        subsystem, mostly due to the new descriptor API, but all is getting
        into shape.
      
         - Fix compile warnings
      
         - Fix overly talkative diagnostic messages from usual use cases wrt
           GPIO descriptors
      
         - Add a documentation 00-INDEX
      
         - Use platform GPIOs as fallback when ACPI or device tree is used as
           the primary means to get GPIO lines
      
         - A bug fix for the MPC8572/MPC8536 fixing erroneous input data"
      
      * tag 'gpio-v3.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
        gpiolib: change a warning to debug message when failing to get gpio
        powerpc/gpio: Fix the wrong GPIO input data on MPC8572/MPC8536
        gpiolib: use platform GPIO mappings as fallback
        Documentation: gpiolib: add 00-INDEX file
        gpiolib: fix lookup of platform-mapped GPIOs
        gpiolib: add missing declarations
      8ecffd79