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  1. Mar 25, 2014
    • Linus Torvalds's avatar
      Merge branch 'parisc-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux · 82231646
      Linus Torvalds authored
      Pull parisc updates from Helge Deller:
       - revert parts of the latest patch regarding font selection with STICON
         console
       - wire up the utimes() syscall for parisc
       - remove the unused parisc tmpalias code and unnecessary arch*relax
         defines
      
      * 'parisc-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
        parisc: locks: remove redundant arch_*_relax operations
        parisc: wire up sys_utimes
        parisc: Remove unused CONFIG_PARISC_TMPALIAS code
        partly revert commit 8a10bc9d: parisc/sti_console: prefer Linux fonts over built-in ROM fonts
      82231646
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · 56f1f4b2
      Linus Torvalds authored
      Pull sparc fixes from David Miller:
      
       1) Do serial locking in a way that makes things clear that these are
          IRQ spinlocks.
      
       2) Conversion to generic idle loop broke first generation Niagara
          machines, need to have %pil interrupts enabled during cpu yield
          hypervisor call.
      
       3) Do not use magic constants for iterations over tsb tables, from Doug
          Wilson.
      
       4) Fix erroneous truncation of 64-bit system call return values to
          32-bit.  From Dave Kleikamp.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
        sparc64: Make sure %pil interrupts are enabled during hypervisor yield.
        sparc64:tsb.c:use array size macro rather than number
        sparc64: don't treat 64-bit syscall return codes as 32-bit
        sparc: serial: Clean up the locking for -rt
      56f1f4b2
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 8a109446
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) OpenVswitch's lookup_datapath() returns error pointers, so don't
          check against NULL.  From Jiri Pirko.
      
       2) pfkey_compile_policy() code path tries to do a GFP_KERNEL allocation
          under RCU locks, fix by using GFP_ATOMIC when necessary.  From
          Nikolay Aleksandrov.
      
       3) phy_suspend() indirectly passes uninitialized data into the ethtool
          get wake-on-land implementations.  Fix from Sebastian Hesselbarth.
      
       4) CPSW driver unregisters CPTS twice, fix from Benedikt Spranger.
      
       5) If SKB allocation of reply packet fails, vxlan's arp_reduce() defers
          a NULL pointer.  Fix from David Stevens.
      
       6) IPV6 neigh handling in vxlan doesn't validate the destination
          address properly, and it builds a packet with the src and dst
          reversed.  Fix also from David Stevens.
      
       7) Fix spinlock recursion during subscription failures in TIPC stack,
          from Erik Hugne.
      
       8) Revert buggy conversion of davinci_emac to devm_request_irq, from
          Chrstian Riesch.
      
       9) Wrong flags passed into forwarding database netlink notifications,
          from Nicolas Dichtel.
      
      10) The netpoll neighbour soliciation handler checks wrong ethertype,
          needs to be ETH_P_IPV6 rather than ETH_P_ARP.  Fix from Li RongQing.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (34 commits)
        tipc: fix spinlock recursion bug for failed subscriptions
        vxlan: fix nonfunctional neigh_reduce()
        net: davinci_emac: Fix rollback of emac_dev_open()
        net: davinci_emac: Replace devm_request_irq with request_irq
        netpoll: fix the skb check in pkt_is_ns
        net: micrel : ks8851-ml: add vdd-supply support
        ip6mr: fix mfc notification flags
        ipmr: fix mfc notification flags
        rtnetlink: fix fdb notification flags
        tcp: syncookies: do not use getnstimeofday()
        netlink: fix setsockopt in mmap examples in documentation
        openvswitch: Correctly report flow used times for first 5 minutes after boot.
        via-rhine: Disable device in error path
        ATHEROS-ATL1E: Convert iounmap to pci_iounmap
        vxlan: fix potential NULL dereference in arp_reduce()
        cnic: Update version to 2.5.20 and copyright year.
        cnic,bnx2i,bnx2fc: Fix inconsistent use of page size
        cnic: Use proper ulp_ops for per device operations.
        net: cdc_ncm: fix control message ordering
        ipv6: ip6_append_data_mtu do not handle the mtu of the second fragment properly
        ...
      8a109446
    • Erik Hugne's avatar
      tipc: fix spinlock recursion bug for failed subscriptions · a5d0e7c0
      Erik Hugne authored
      
      
      If a topology event subscription fails for any reason, such as out
      of memory, max number reached or because we received an invalid
      request the correct behavior is to terminate the subscribers
      connection to the topology server. This is currently broken and
      produces the following oops:
      
      [27.953662] tipc: Subscription rejected, illegal request
      [27.955329] BUG: spinlock recursion on CPU#1, kworker/u4:0/6
      [27.957066]  lock: 0xffff88003c67f408, .magic: dead4ead, .owner: kworker/u4:0/6, .owner_cpu: 1
      [27.958054] CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 3.14.0-rc6+ #5
      [27.960230] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
      [27.960874] Workqueue: tipc_rcv tipc_recv_work [tipc]
      [27.961430]  ffff88003c67f408 ffff88003de27c18 ffffffff815c0207 ffff88003de1c050
      [27.962292]  ffff88003de27c38 ffffffff815beec5 ffff88003c67f408 ffffffff817f0a8a
      [27.963152]  ffff88003de27c58 ffffffff815beeeb ffff88003c67f408 ffffffffa0013520
      [27.964023] Call Trace:
      [27.964292]  [<ffffffff815c0207>] dump_stack+0x45/0x56
      [27.964874]  [<ffffffff815beec5>] spin_dump+0x8c/0x91
      [27.965420]  [<ffffffff815beeeb>] spin_bug+0x21/0x26
      [27.965995]  [<ffffffff81083df6>] do_raw_spin_lock+0x116/0x140
      [27.966631]  [<ffffffff815c6215>] _raw_spin_lock_bh+0x15/0x20
      [27.967256]  [<ffffffffa0008540>] subscr_conn_shutdown_event+0x20/0xa0 [tipc]
      [27.968051]  [<ffffffffa000fde4>] tipc_close_conn+0xa4/0xb0 [tipc]
      [27.968722]  [<ffffffffa00101ba>] tipc_conn_terminate+0x1a/0x30 [tipc]
      [27.969436]  [<ffffffffa00089a2>] subscr_conn_msg_event+0x1f2/0x2f0 [tipc]
      [27.970209]  [<ffffffffa0010000>] tipc_receive_from_sock+0x90/0xf0 [tipc]
      [27.970972]  [<ffffffffa000fa79>] tipc_recv_work+0x29/0x50 [tipc]
      [27.971633]  [<ffffffff8105dbf5>] process_one_work+0x165/0x3e0
      [27.972267]  [<ffffffff8105e869>] worker_thread+0x119/0x3a0
      [27.972896]  [<ffffffff8105e750>] ? manage_workers.isra.25+0x2a0/0x2a0
      [27.973622]  [<ffffffff810648af>] kthread+0xdf/0x100
      [27.974168]  [<ffffffff810647d0>] ? kthread_create_on_node+0x1a0/0x1a0
      [27.974893]  [<ffffffff815ce13c>] ret_from_fork+0x7c/0xb0
      [27.975466]  [<ffffffff810647d0>] ? kthread_create_on_node+0x1a0/0x1a0
      
      The recursion occurs when subscr_terminate tries to grab the
      subscriber lock, which is already taken by subscr_conn_msg_event.
      We fix this by checking if the request to establish a new
      subscription was successful, and if not we initiate termination of
      the subscriber after we have released the subscriber lock.
      
      Signed-off-by: default avatarErik Hugne <erik.hugne@ericsson.com>
      Reviewed-by: default avatarJon Maloy <jon.maloy@ericsson.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a5d0e7c0
    • David Stevens's avatar
      vxlan: fix nonfunctional neigh_reduce() · 4b29dba9
      David Stevens authored
      
      
      The VXLAN neigh_reduce() code is completely non-functional since
      check-in. Specific errors:
      
      1) The original code drops all packets with a multicast destination address,
      	even though neighbor solicitations are sent to the solicited-node
      	address, a multicast address. The code after this check was never run.
      2) The neighbor table lookup used the IPv6 header destination, which is the
      	solicited node address, rather than the target address from the
      	neighbor solicitation. So neighbor lookups would always fail if it
      	got this far. Also for L3MISSes.
      3) The code calls ndisc_send_na(), which does a send on the tunnel device.
      	The context for neigh_reduce() is the transmit path, vxlan_xmit(),
      	where the host or a bridge-attached neighbor is trying to transmit
      	a neighbor solicitation. To respond to it, the tunnel endpoint needs
      	to do a *receive* of the appropriate neighbor advertisement. Doing a
      	send, would only try to send the advertisement, encapsulated, to the
      	remote destinations in the fdb -- hosts that definitely did not do the
      	corresponding solicitation.
      4) The code uses the tunnel endpoint IPv6 forwarding flag to determine the
      	isrouter flag in the advertisement. This has nothing to do with whether
      	or not the target is a router, and generally won't be set since the
      	tunnel endpoint is bridging, not routing, traffic.
      
      	The patch below creates a proxy neighbor advertisement to respond to
      neighbor solicitions as intended, providing proper IPv6 support for neighbor
      reduction.
      
      Signed-off-by: default avatarDavid L Stevens <dlstevens@us.ibm.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4b29dba9
    • David S. Miller's avatar
      Merge branch 'davinci_emac' · 866b7cdf
      David S. Miller authored
      Christian Riesch says:
      
      ====================
      net: davinci_emac: Fix interrupt requests and error handling
      
      since commit 6892b41d (Linux 3.11) the
      davinci_emac driver is broken. After doing ifconfig down, ifconfig up,
      requesting the interrupts for the driver fails. The interface remains dead
      until the board is rebooted.
      
      The first patch in this patchset reverts commit
      6892b41d
      
       partially and makes the driver
      useable again.
      
      During the work on the first patch, a number of bugs in the error handling
      of the driver's ndo_open code were found. The second patch fixes these bugs.
      
      I believe the first patch meets the rules for stable kernels, I therefore added
      the stable tag to this patch. The second patch is just cleanup, the code
      that is fixed by this patch is only executed in case of an error.
      ====================
      
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      866b7cdf
    • Christian Riesch's avatar
      net: davinci_emac: Fix rollback of emac_dev_open() · cd11cf50
      Christian Riesch authored
      
      
      If an error occurs during the initialization in emac_dev_open() (the
      driver's ndo_open function), interrupts, DMA descriptors etc. must be freed.
      The current rollback code is buggy in several ways.
      
        1) Freeing the interrupts. The current code will not free all interrupts
           that were requested by the driver. Furthermore,  the code tries to do a
           platform_get_resource(priv->pdev, IORESOURCE_IRQ, -1) in its last
           iteration.
      
           This patch fixes these bugs.
      
        2) Wrong order of err: and rollback: labels. If the setup of the PHY in
           the code fails, the interrupts that have been requested before are
           not freed:
      
              request irq
                      if requesting irqs fails, goto rollback
              setup phy
                      if phy setup fails, goto err
              return 0
      
           rollback:
              free irqs
           err:
      
           This patch brings the code into the correct order.
      
        3) The code calls napi_enable() and emac_int_enable(), but does not
           undo both in case of an error.
      
           This patch adds calls of emac_int_disable() and napi_disable() to the
           rollback code.
      
        4) RX DMA descriptors are not freed in case of an error: Right before
           requesting the irqs, the function creates DMA descriptors for the
           RX channel. These RX descriptors are never freed when we jump to either
           rollback or err.
      
           This patch adds code for freeing the DMA descriptors in the case of
           an initialization error. This required a modification of
           cpdma_ctrl_stop() in davinci_cpdma.c: We must be able to call this
           function to free the DMA descriptors while the DMA channels are
           in IDLE state (before cpdma_ctlr_start() was called).
      
      Tested on a custom board with the Texas Instruments AM1808.
      
      Signed-off-by: default avatarChristian Riesch <christian.riesch@omicron.at>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cd11cf50
    • Christian Riesch's avatar
      net: davinci_emac: Replace devm_request_irq with request_irq · 33b7107f
      Christian Riesch authored
      In commit 6892b41d
      
      
      
      Author: Lad, Prabhakar <prabhakar.csengg@gmail.com>
      Date:   Tue Jun 25 21:24:51 2013 +0530
      net: davinci: emac: Convert to devm_* api
      
      the call of request_irq is replaced by devm_request_irq and the call
      of free_irq is removed. But since interrupts are requested in
      emac_dev_open, doing ifconfig up/down on the board requests the
      interrupts again each time, causing devm_request_irq to fail. The
      interface is dead until the device is rebooted.
      
      This patch reverts said commit partially: It changes the driver back
      to use request_irq instead of devm_request_irq, puts free_irq back in
      place, but keeps the remaining changes of the original patch.
      
      Reported-by: default avatarJon Ringle <jon@ringle.org>
      Signed-off-by: default avatarChristian Riesch <christian.riesch@omicron.at>
      Cc: Lad, Prabhakar <prabhakar.csengg@gmail.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      33b7107f
    • Li RongQing's avatar
      netpoll: fix the skb check in pkt_is_ns · c27f0872
      Li RongQing authored
      
      
      Neighbor Solicitation is ipv6 protocol, so we should check
      skb->protocol with ETH_P_IPV6
      
      Signed-off-by: default avatarLi RongQing <roy.qing.li@gmail.com>
      Cc: WANG Cong <amwang@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c27f0872
    • David S. Miller's avatar
      sparc64: Make sure %pil interrupts are enabled during hypervisor yield. · cb3042d6
      David S. Miller authored
      In arch_cpu_idle() we must enable %pil based interrupts before
      potentially invoking the hypervisor cpu yield call.
      
      As per the Hypervisor API documentation for cpu_yield:
      
      	Interrupts which are blocked by some mechanism other that
      	pstate.ie (for example %pil) are not guaranteed to cause
      	a return from this service.
      
      It seems that only first generation Niagara chips are hit by this
      bug.  My best guess is that later chips implement this in hardware
      and wake up anyways from %pil events, whereas in first generation
      chips the yield is implemented completely in hypervisor code and
      requires %pil to be enabled in order to wake properly from this
      call.
      
      Fixes: 87fa05ae
      
       ("sparc: Use generic idle loop")
      Reported-by: default avatarFabio M. Di Nitto <fabbione@fabbione.net>
      Reported-by: default avatarJan Engelhardt <jengelh@inai.de>
      Tested-by: default avatarJan Engelhardt <jengelh@inai.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cb3042d6
  2. Mar 24, 2014
  3. Mar 23, 2014
  4. Mar 21, 2014
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 08edb33c
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Some final few intel fixes, all regressions, all stable cc, and one
        exynos oops fixer.
      
        The biggest is probably the intel display error irqs one, but it seems
        to fix a few crashes on startup, and one use after free in drm core"
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
        drm/exynos: Fix (more) freeing issues in exynos_drm_drv.c
        drm/i915: Disable stolen memory when DMAR is active
        Revert "drm/i915: don't touch the VDD when disabling the panel"
        drm: Fix use-after-free in the shadow-attache exit code
        drm/i915: Don't enable display error interrupts from the start
        drm/i915: Fix scanline counter fixup on BDW
        drm/i915: Add a workaround for HSW scanline counter weirdness
        drm/i915: Fix PSR programming
      08edb33c
    • Dave Jones's avatar
      block: free q->flush_rq in blk_init_allocated_queue error paths · 708f04d2
      Dave Jones authored
      Commit 7982e90c
      
       ("block: fix q->flush_rq NULL pointer crash on
      dm-mpath flush") moved an allocation to blk_init_allocated_queue(), but
      neglected to free that allocation on the error paths that follow.
      
      Signed-off-by: default avatarDave Jones <davej@fedoraproject.org>
      Acked-by: default avatarMike Snitzer <snitzer@redhat.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      708f04d2
    • Linus Torvalds's avatar
      futex: revert back to the explicit waiter counting code · 11d4616b
      Linus Torvalds authored
      Srikar Dronamraju reports that commit b0c29f79
      
       ("futexes: Avoid
      taking the hb->lock if there's nothing to wake up") causes java threads
      getting stuck on futexes when runing specjbb on a power7 numa box.
      
      The cause appears to be that the powerpc spinlocks aren't using the same
      ticket lock model that we use on x86 (and other) architectures, which in
      turn result in the "spin_is_locked()" test in hb_waiters_pending()
      occasionally reporting an unlocked spinlock even when there are pending
      waiters.
      
      So this reinstates Davidlohr Bueso's original explicit waiter counting
      code, which I had convinced Davidlohr to drop in favor of figuring out
      the pending waiters by just using the existing state of the spinlock and
      the wait queue.
      
      Reported-and-tested-by: default avatarSrikar Dronamraju <srikar@linux.vnet.ibm.com>
      Original-code-by: default avatarDavidlohr Bueso <davidlohr@hp.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      11d4616b
    • Linus Torvalds's avatar
      Merge tag 'trace-fixes-v3.14-rc7' of... · 477cc484
      Linus Torvalds authored
      Merge tag 'trace-fixes-v3.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
      
      Pull trace fix from Steven Rostedt:
       "Vaibhav Nagarnaik discovered that since 3.10 a clean-up patch made the
        array index in the trace event format bogus.
      
        He supplied an elegant solution that uses __stringify() and also
        removes the need for the event_storage and event_storage_mutex and
        also cuts off a few K of overhead from the trace events"
      
      * tag 'trace-fixes-v3.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        tracing: Fix array size mismatch in format string
      477cc484
    • Hugh Dickins's avatar
      mm: fix swapops.h:131 bug if remap_file_pages raced migration · 7e09e738
      Hugh Dickins authored
      
      
      Add remove_linear_migration_ptes_from_nonlinear(), to fix an interesting
      little include/linux/swapops.h:131 BUG_ON(!PageLocked) found by trinity:
      indicating that remove_migration_ptes() failed to find one of the
      migration entries that was temporarily inserted.
      
      The problem comes from remap_file_pages()'s switch from vma_interval_tree
      (good for inserting the migration entry) to i_mmap_nonlinear list (no good
      for locating it again); but can only be a problem if the remap_file_pages()
      range does not cover the whole of the vma (zap_pte() clears the range).
      
      remove_migration_ptes() needs a file_nonlinear method to go down the
      i_mmap_nonlinear list, applying linear location to look for migration
      entries in those vmas too, just in case there was this race.
      
      The file_nonlinear method does need rmap_walk_control.arg to do this;
      but it never needed vma passed in - vma comes from its own iteration.
      
      Reported-and-tested-by: default avatarDave Jones <davej@redhat.com>
      Reported-and-tested-by: default avatarSasha Levin <sasha.levin@oracle.com>
      Signed-off-by: default avatarHugh Dickins <hughd@google.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      7e09e738
    • David S. Miller's avatar
      Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch · b74d3fec
      David S. Miller authored
      
      
      Jesse Gross says:
      
      ====================
      Open vSwitch
      
      Four small fixes for net/3.14. I realize that these are late in the
      cycle - just got back from vacation.
      ====================
      
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b74d3fec
    • Nicolas Dichtel's avatar
      ip6mr: fix mfc notification flags · f518338b
      Nicolas Dichtel authored
      Commit 812e44dd
      
       ("ip6mr: advertise new mfc entries via rtnl") reuses the
      function ip6mr_fill_mroute() to notify mfc events.
      But this function was used only for dump and thus was always setting the
      flag NLM_F_MULTI, which is wrong in case of a single notification.
      
      Libraries like libnl will wait forever for NLMSG_DONE.
      
      CC: Thomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
      Acked-by: default avatarThomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f518338b
    • Nicolas Dichtel's avatar
      ipmr: fix mfc notification flags · 65886f43
      Nicolas Dichtel authored
      Commit 8cd3ac9f
      
       ("ipmr: advertise new mfc entries via rtnl") reuses the
      function ipmr_fill_mroute() to notify mfc events.
      But this function was used only for dump and thus was always setting the
      flag NLM_F_MULTI, which is wrong in case of a single notification.
      
      Libraries like libnl will wait forever for NLMSG_DONE.
      
      CC: Thomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
      Acked-by: default avatarThomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      65886f43
    • Nicolas Dichtel's avatar
      rtnetlink: fix fdb notification flags · 1c104a6b
      Nicolas Dichtel authored
      Commit 3ff661c3
      
       ("net: rtnetlink notify events for FDB NTF_SELF adds and
      deletes") reuses the function nlmsg_populate_fdb_fill() to notify fdb events.
      But this function was used only for dump and thus was always setting the
      flag NLM_F_MULTI, which is wrong in case of a single notification.
      
      Libraries like libnl will wait forever for NLMSG_DONE.
      
      CC: Thomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
      Acked-by: default avatarThomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1c104a6b
    • Eric Dumazet's avatar
      tcp: syncookies: do not use getnstimeofday() · 63262315
      Eric Dumazet authored
      While it is true that getnstimeofday() uses about 40 cycles if TSC
      is available, it can use 1600 cycles if hpet is the clocksource.
      
      Switch to get_jiffies_64(), as this is more than enough, and
      go back to 60 seconds periods.
      
      Fixes: 8c27bd75
      
       ("tcp: syncookies: reduce cookie lifetime to 128 seconds")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Cc: Florian Westphal <fw@strlen.de>
      Acked-by: default avatarFlorian Westphal <fw@strlen.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      63262315
    • stephen hemminger's avatar
      netlink: fix setsockopt in mmap examples in documentation · 88050049
      stephen hemminger authored
      
      
      The documentation for how to use netlink mmap interface is incorrect.
      The calls to setsockopt() require an additional argument.
      
      Signed-off-by: default avatarStephen Hemminger <stephen@networkplumber.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      88050049
    • Linus Torvalds's avatar
      Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus · 3fb725c4
      Linus Torvalds authored
      Pull MIPS fixes from Ralf Baechle:
       "Another set of five fixes.  The most interesting one is a fix for race
        condition in the local_irq_disable() implementation used by .S code
        for pre-MIPS R2 processors only.  It leaves a race that's hard but not
        impossible to hit; the others fairly obvious"
      
      * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
        MIPS: Make local_irq_disable macro safe for non-Mipsr2
        MIPS: Octeon: Fix warning in of_device_alloc on cn3xxx
        MIPS: ftrace: Tweak safe_load()/safe_store() macros
        MIPS: BCM47XX: Check all (32) GPIOs when looking for a pin
        MIPS: Fix possible build error with transparent hugepages enabled
      3fb725c4
    • Linus Torvalds's avatar
      Merge tag 'sound-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 92f99731
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "Just two minor bug fixes: a fix for a regression in oxygen driver that
        was introduced in 3.14-rc1, and a stable fix for the return value of
        compress offload open callback"
      
      * tag 'sound-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: compress: Pass through return value of open ops callback
        ALSA: oxygen: Xonar DG(X): fix Stereo Upmixing regression
      92f99731
    • Ben Pfaff's avatar
      openvswitch: Correctly report flow used times for first 5 minutes after boot. · f9b8c4c8
      Ben Pfaff authored
      
      
      The kernel starts out its "jiffies" timer as 5 minutes below zero, as
      shown in include/linux/jiffies.h:
      
        /*
         * Have the 32 bit jiffies value wrap 5 minutes after boot
         * so jiffies wrap bugs show up earlier.
         */
        #define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))
      
      The loop in ovs_flow_stats_get() starts out with 'used' set to 0, then
      takes any "later" time.  This means that for the first five minutes after
      boot, flows will always be reported as never used, since 0 is greater than
      any time already seen.
      
      Signed-off-by: default avatarBen Pfaff <blp@nicira.com>
      Acked-by: default avatarPravin B Shelar <pshelar@nicira.com>
      Signed-off-by: default avatarJesse Gross <jesse@nicira.com>
      f9b8c4c8
    • Vaibhav Nagarnaik's avatar
      tracing: Fix array size mismatch in format string · 87291347
      Vaibhav Nagarnaik authored
      In event format strings, the array size is reported in two locations.
      One in array subscript and then via the "size:" attribute. The values
      reported there have a mismatch.
      
      For e.g., in sched:sched_switch the prev_comm and next_comm character
      arrays have subscript values as [32] where as the actual field size is
      16.
      
      name: sched_switch
      ID: 301
      format:
              field:unsigned short common_type;       offset:0;       size:2; signed:0;
              field:unsigned char common_flags;       offset:2;       size:1; signed:0;
              field:unsigned char common_preempt_count;       offset:3;       size:1;signed:0;
              field:int common_pid;   offset:4;       size:4; signed:1;
      
              field:char prev_comm[32];       offset:8;       size:16;        signed:1;
              field:pid_t prev_pid;   offset:24;      size:4; signed:1;
              field:int prev_prio;    offset:28;      size:4; signed:1;
              field:long prev_state;  offset:32;      size:8; signed:1;
              field:char next_comm[32];       offset:40;      size:16;        signed:1;
              field:pid_t next_pid;   offset:56;      size:4; signed:1;
              field:int next_prio;    offset:60;      size:4; signed:1;
      
      After bisection, the following commit was blamed:
      92edca07
      
       tracing: Use direct field, type and system names
      
      This commit removes the duplication of strings for field->name and
      field->type assuming that all the strings passed in
      __trace_define_field() are immutable. This is not true for arrays, where
      the type string is created in event_storage variable and field->type for
      all array fields points to event_storage.
      
      Use __stringify() to create a string constant for the type string.
      
      Also, get rid of event_storage and event_storage_mutex that are not
      needed anymore.
      
      also, an added benefit is that this reduces the overhead of events a bit more:
      
         text    data     bss     dec     hex filename
      8424787 2036472 1302528 11763787         b3804b vmlinux
      8420814 2036408 1302528 11759750         b37086 vmlinux.patched
      
      Link: http://lkml.kernel.org/r/1392349908-29685-1-git-send-email-vnagarnaik@google.com
      
      Cc: Laurent Chavey <chavey@google.com>
      Cc: stable@vger.kernel.org # 3.10+
      Signed-off-by: default avatarVaibhav Nagarnaik <vnagarnaik@google.com>
      Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      87291347
  5. Mar 20, 2014
    • Jim Quinlan's avatar
      MIPS: Make local_irq_disable macro safe for non-Mipsr2 · 71ca7588
      Jim Quinlan authored
      For non-mipsr2 processors, the local_irq_disable contains an mfc0-mtc0
      pair with instructions inbetween.  With preemption enabled, this sequence
      may get preempted and effect a stale value of CP0_STATUS when executing
      the mtc0 instruction.  This commit avoids this scenario by incrementing
      the preempt count before the mfc0 and decrementing it after the mtc9.
      
      [ralf@linux-mips.org: This patch is sorting out the part that were missed
      by e97c5b60
      
       [MIPS: Make irqflags.h functions preempt-safe for non-mipsr2
      cpus.]  I also re-enabled the inclusion of <asm/asm-offsets.h> at the top
      of <asm/asmmacro.h>].
      
      Signed-off-by: default avatarJim Quinlan <jim2101024@gmail.com>
      Cc: linux-mips@linux-mips.org
      Cc: cernekee@gmail.com
      Patchwork: https://patchwork.linux-mips.org/patch/6164/
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      71ca7588
    • Dave Airlie's avatar
      Merge branch 'exynos-drm-fixes' of... · 004e5cf7
      Dave Airlie authored
      Merge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
      
       Just fixed resource release issue at open fail.
      
      * 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
        drm/exynos: Fix (more) freeing issues in exynos_drm_drv.c
      004e5cf7
    • Daniel Kurtz's avatar
      drm/exynos: Fix (more) freeing issues in exynos_drm_drv.c · 85d898bf
      Daniel Kurtz authored
      The following commit [0] fixed a use-after-free, but left the subdrv open
      in the error path.
      
      [0] commit 6ca605f7
      
      
      drm/exynos: Fix freeing issues in exynos_drm_drv.c
      
      Signed-off-by: default avatarDaniel Kurtz <djkurtz@chromium.org>
      Acked-by: default avatarSachin Kamat <sachin.kamat@linaro.org>
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      85d898bf
    • Hugh Dickins's avatar
      mm: fix bad rss-counter if remap_file_pages raced migration · 88784396
      Hugh Dickins authored
      
      
      Fix some "Bad rss-counter state" reports on exit, arising from the
      interaction between page migration and remap_file_pages(): zap_pte()
      must count a migration entry when zapping it.
      
      And yes, it is possible (though very unusual) to find an anon page or
      swap entry in a VM_SHARED nonlinear mapping: coming from that horrid
      get_user_pages(write, force) case which COWs even in a shared mapping.
      
      Signed-off-by: default avatarHugh Dickins <hughd@google.com>
      Tested-by: default avatarSasha Levin <sasha.levin@oracle.com>
      Tested-by: default avatarDave Jones <davej@redhat.com>
      Cc: Cyrill Gorcunov <gorcunov@gmail.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      88784396
    • Linus Torvalds's avatar
      Merge tag 'pci-v3.14-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · 7c1cfacc
      Linus Torvalds authored
      Pull PCI resource management fix from Bjorn Helgaas:
       "This is a fix for an AGP regression exposed by e501b3d8 ("agp:
        Support 64-bit APBASE"), which we merged in v3.14-rc1.
      
        We've warned about the conflict between the GART and PCI resources and
        cleared out the PCI resource for a long time, but after e501b3d8,
        we still *use* that cleared-out PCI resource.  I think the GART
        resource is incorrect, so this patch removes it"
      
      * tag 'pci-v3.14-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
        Revert "[PATCH] Insert GART region into resource map"
      7c1cfacc
    • Linus Torvalds's avatar
      Merge branch 'for-3.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup · 7c389538
      Linus Torvalds authored
      Pull cgroup fix from Tejun Heo:
       "One really late cgroup patch to fix error path in create_css().
        Hitting this bug would be pretty rare but still possible and it gets
        delayed we'd need to backport it through -stable anyway.  It only
        updates error path in create_css() and has low chance of new
        breakages"
      
      * 'for-3.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
        cgroup: fix a failure path in create_css()
      7c389538
    • Andreas Herrmann's avatar
      MIPS: Octeon: Fix warning in of_device_alloc on cn3xxx · 2eddb708
      Andreas Herrmann authored
      Starting with commit 3da52787
      
       (of/irq:
      Rework of_irq_count()) the following warning is triggered on octeon
      cn3xxx:
      
      [    0.887281] WARNING: CPU: 0 PID: 1 at drivers/of/platform.c:171 of_device_alloc+0x228/0x230()
      [    0.895642] Modules linked in:
      [    0.898689] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.0-rc7-00012-g9ae51f2-dirty #41
      [    0.906860] Stack : c8b439581166d96e ffffffff816b0000 0000000040808000 ffffffff81185ddc
      [    0.906860] 	  0000000000000000 0000000000000000 0000000000000000 000000000000000b
      [    0.906860] 	  000000000000000a 000000000000000a 0000000000000000 0000000000000000
      [    0.906860] 	  ffffffff81740000 ffffffff81720000 ffffffff81615900 ffffffff816b0177
      [    0.906860] 	  ffffffff81727d10 800000041f868fb0 0000000000000001 0000000000000000
      [    0.906860] 	  0000000000000000 0000000000000038 0000000000000001 ffffffff81568484
      [    0.906860] 	  800000041f86faa8 ffffffff81145ddc 0000000000000000 ffffffff811873f4
      [    0.906860] 	  800000041f868b88 800000041f86f9c0 0000000000000000 ffffffff81569c9c
      [    0.906860] 	  0000000000000000 0000000000000000 0000000000000000 0000000000000000
      [    0.906860] 	  0000000000000000 ffffffff811205e0 0000000000000000 0000000000000000
      [    0.906860] 	  ...
      [    0.971695] Call Trace:
      [    0.974139] [<ffffffff811205e0>] show_stack+0x68/0x80
      [    0.979183] [<ffffffff81569c9c>] dump_stack+0x8c/0xe0
      [    0.984196] [<ffffffff81145efc>] warn_slowpath_common+0x84/0xb8
      [    0.990110] [<ffffffff81436888>] of_device_alloc+0x228/0x230
      [    0.995726] [<ffffffff814368d8>] of_platform_device_create_pdata+0x48/0xd0
      [    1.002593] [<ffffffff81436a94>] of_platform_bus_create+0x134/0x1e8
      [    1.008837] [<ffffffff81436af8>] of_platform_bus_create+0x198/0x1e8
      [    1.015064] [<ffffffff81436cc4>] of_platform_bus_probe+0xa4/0x100
      [    1.021149] [<ffffffff81100570>] do_one_initcall+0xd8/0x128
      [    1.026701] [<ffffffff816e2a10>] kernel_init_freeable+0x144/0x210
      [    1.032753] [<ffffffff81564bc4>] kernel_init+0x14/0x110
      [    1.037973] [<ffffffff8111bb44>] ret_from_kernel_thread+0x14/0x1c
      
      With this commit the kernel starts mapping the interrupts listed for
      gpio-controller node. irq_domain_ops for CIU (octeon_irq_ciu_map and
      octeon_irq_ciu_xlat) refuse to handle the GPIO lines (returning -EINVAL)
      and this is causing above warning in of_device_alloc().
      
      Modify irq_domain_ops for CIU and CIU2 to "gracefully handle" GPIO
      lines (neither return error code nor call octeon_irq_set_ciu_mapping
      for it). This should avoid the warning.
      
      (As before the real setup for GPIO lines will happen using
      irq_domain_ops of gpio-controller.)
      
      This patch is based on Wei's patch v2 (see
      http://marc.info/?l=linux-mips&m=139511814813247).
      
      Signed-off-by: default avatarAndreas Herrmann <andreas.herrmann@caviumnetworks.com>
      Reported-by: default avatarYang Wei <wei.yang@windriver.com>
      Acked-by: default avatarDavid Daney <david.daney@cavium.com>
      Cc: linux-mips@linux-mips.org
      Patchwork: https://patchwork.linux-mips.org/patch/6624/
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      2eddb708
    • Viller Hsiao's avatar
      MIPS: ftrace: Tweak safe_load()/safe_store() macros · b08ac66b
      Viller Hsiao authored
      Due to name collision in ftrace safe_load and safe_store macros,
      these macros cannot take expressions as operands.
      
      For example, compiler will complain for a macro call like the following:
        safe_store_code(new_code2, ip + 4, faulted);
      
        arch/mips/include/asm/ftrace.h:61:6: note: in definition of macro 'safe_store'
           : [dst] "r" (dst), [src] "r" (src)\
              ^
        arch/mips/kernel/ftrace.c:118:2: note: in expansion of macro 'safe_store_code'
          safe_store_code(new_code2, ip + 4, faulted);
          ^
        arch/mips/kernel/ftrace.c:118:32: error: undefined named operand 'ip + 4'
          safe_store_code(new_code2, ip + 4, faulted);
                                        ^
        arch/mips/include/asm/ftrace.h:61:6: note: in definition of macro 'safe_store'
           : [dst] "r" (dst), [src] "r" (src)\
              ^
        arch/mips/kernel/ftrace.c:118:2: note: in expansion of macro 'safe_store_code'
          safe_store_code(new_code2, ip + 4, faulted);
          ^
      
      This build error is triggered by a4671094
      
       [MIPS: ftrace: Fix icache flush
      range error].  Tweak variable naming in those macros to allow flexible
      operands.
      
      Signed-off-by: default avatarViller Hsiao <villerhsiao@gmail.com>
      Cc: linux-mips@linux-mips.org
      Cc: rostedt@goodmis.org
      Cc: fweisbec@gmail.com
      Cc: mingo@redhat.com
      Cc: Qais.Yousef@imgtec.com
      Patchwork: https://patchwork.linux-mips.org/patch/6622/
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      b08ac66b