1. 29 Mar, 2015 3 commits
  2. 25 Mar, 2015 2 commits
  3. 24 Mar, 2015 10 commits
    • Cliff Clark's avatar
      ucc_geth: Intialize link state to down before register_netdev · 1452db76
      Cliff Clark authored
      ucc_geth was indicating link up after a port is administratively enabled even
      when nothing is plugged in.  This causes user-space tools to see a spurious link
      up the first time after boot.
      Signed-off-by: default avatarCliff Clark <cliff_clark@selinc.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1452db76
    • David S. Miller's avatar
      Merge branch 'mlx4' · 8ad48372
      David S. Miller authored
      Or Gerlitz says:
      
      ====================
      mlx4 driver RC fixes
      
      Ido's patch should go to -stable of >= 3.14 too, the issue is older but it
      hits us with VXLAN for which driver support dates there.
      
      As for Jack's fix, for the time being, picking it to 4.0 is OK.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8ad48372
    • Jack Morgenstein's avatar
      net/mlx4_core: Fix GEN_EQE accessing uninitialixed mutex · bffb023a
      Jack Morgenstein authored
      We occasionally see in procedure mlx4_GEN_EQE that the driver tries
      to grab an uninitialized mutex.
      
      This can occur in only one of two ways:
      1. We are trying to generate an async event on an uninitialized slave.
      2. We are trying to generate an async event on an illegal slave number
         ( < 0 or > persist->num_vfs) or an inactive slave.
      
      To deal with #1: move the mutex initialization from specific slave init
      sequence in procedure mlx_master_do_cmd to mlx4_multi_func_init() (so that
      the mutex is always initialized for all slaves).
      
      To deal with #2: check in procedure mlx4_GEN_EQE that the slave number
      provided is in the proper range and that the slave is active.
      Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      bffb023a
    • Ido Shamay's avatar
      net/mlx4_en: Call register_netdevice in the proper location · e5eda89d
      Ido Shamay authored
      Netdevice registration should be performed a the end of the driver
      initialization flow. If we don't do that, after calling register_netdevice,
      device callbacks may be issued by higher layers of the stack before
      final configuration of the device is done.
      
      For example (VXLAN configuration race), mlx4_SET_PORT_VXLAN was issued
      after the register_netdev command. System network scripts may configure
      the interface (UP) right after the registration, which also attach
      unicast VXLAN steering rule, before mlx4_SET_PORT_VXLAN was called,
      causing the firmware to fail the rule attachment.
      
      Fixes: 837052d0 ("net/mlx4_en: Add netdev support for TCP/IP offloads of vxlan tunneling")
      Signed-off-by: default avatarIdo Shamay <idos@mellanox.com>
      Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e5eda89d
    • David S. Miller's avatar
      Merge tag 'wireless-drivers-for-davem-2015-03-24' of... · e43e5052
      David S. Miller authored
      Merge tag 'wireless-drivers-for-davem-2015-03-24' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
      
      iwlwifi:
      
      * avoid panic with lots of IBSS stations
      * Fix dvm's behavior after suspend resume
      * Allow to keep connection after CSA failure
      * Remove a noisy by harmless WARN_ON
      * New device IDs
      
      rtlwifi:
      
      * fix IOMMU mapping leak in AP mode
      
      brcmfmac:
      
      * disable MBSS feature for BCM43362 to get AP mode working again
      
      ath9k:
      
      * disable Transmit Power Control (TPC) again due to regressions
      
      * fix beaconing issue with AP+STA setup
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e43e5052
    • Simon Horman's avatar
      rocker: handle non-bridge master change · a6e95cc7
      Simon Horman authored
      Master change notifications may occur other than when joining or
      leaving a bridge, for example when being added to or removed from
      a bond or Open vSwitch.
      
      Previously in those cases rocker_port_bridge_leave() was called
      which results in a null-pointer dereference as rocker_port->bridge_dev
      is NULL because there is no bridge device.
      
      This patch makes provision for doing nothing in such cases.
      
      Fixes: 6c707945 ("rocker: implement L2 bridge offloading")
      Acked-by: default avatarJiri Pirko <jiri@resnulli.us>
      Acked-by: default avatarScott Feldman <sfeldma@gmail.com>
      Signed-off-by: default avatarSimon Horman <simon.horman@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a6e95cc7
    • WANG Cong's avatar
      net: use for_each_netdev_safe() in rtnl_group_changelink() · d079535d
      WANG Cong authored
      In case we move the whole dev group to another netns,
      we should call for_each_netdev_safe(), otherwise we get
      a soft lockup:
      
       NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [ip:798]
       irq event stamp: 255424
       hardirqs last  enabled at (255423): [<ffffffff81a2aa95>] restore_args+0x0/0x30
       hardirqs last disabled at (255424): [<ffffffff81a2ad5a>] apic_timer_interrupt+0x6a/0x80
       softirqs last  enabled at (255422): [<ffffffff81079ebc>] __do_softirq+0x2c1/0x3a9
       softirqs last disabled at (255417): [<ffffffff8107a190>] irq_exit+0x41/0x95
       CPU: 0 PID: 798 Comm: ip Not tainted 4.0.0-rc4+ #881
       Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
       task: ffff8800d1b88000 ti: ffff880119530000 task.ti: ffff880119530000
       RIP: 0010:[<ffffffff810cad11>]  [<ffffffff810cad11>] debug_lockdep_rcu_enabled+0x28/0x30
       RSP: 0018:ffff880119533778  EFLAGS: 00000246
       RAX: ffff8800d1b88000 RBX: 0000000000000002 RCX: 0000000000000038
       RDX: 0000000000000000 RSI: ffff8800d1b888c8 RDI: ffff8800d1b888c8
       RBP: ffff880119533778 R08: 0000000000000000 R09: 0000000000000000
       R10: 0000000000000000 R11: 000000000000b5c2 R12: 0000000000000246
       R13: ffff880119533708 R14: 00000000001d5a40 R15: ffff88011a7d5a40
       FS:  00007fc01315f740(0000) GS:ffff88011a600000(0000) knlGS:0000000000000000
       CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
       CR2: 00007f367a120988 CR3: 000000011849c000 CR4: 00000000000007f0
       Stack:
        ffff880119533798 ffffffff811ac868 ffffffff811ac831 ffffffff811ac828
        ffff8801195337c8 ffffffff811ac8c9 ffff8801195339b0 ffff8801197633e0
        0000000000000000 ffff8801195339b0 ffff8801195337d8 ffffffff811ad2d7
       Call Trace:
        [<ffffffff811ac868>] rcu_read_lock+0x37/0x6e
        [<ffffffff811ac831>] ? rcu_read_unlock+0x5f/0x5f
        [<ffffffff811ac828>] ? rcu_read_unlock+0x56/0x5f
        [<ffffffff811ac8c9>] __fget+0x2a/0x7a
        [<ffffffff811ad2d7>] fget+0x13/0x15
        [<ffffffff811be732>] proc_ns_fget+0xe/0x38
        [<ffffffff817c7714>] get_net_ns_by_fd+0x11/0x59
        [<ffffffff817df359>] rtnl_link_get_net+0x33/0x3e
        [<ffffffff817df3d7>] do_setlink+0x73/0x87b
        [<ffffffff810b28ce>] ? trace_hardirqs_off+0xd/0xf
        [<ffffffff81a2aa95>] ? retint_restore_args+0xe/0xe
        [<ffffffff817e0301>] rtnl_newlink+0x40c/0x699
        [<ffffffff817dffe0>] ? rtnl_newlink+0xeb/0x699
        [<ffffffff81a29246>] ? _raw_spin_unlock+0x28/0x33
        [<ffffffff8143ed1e>] ? security_capable+0x18/0x1a
        [<ffffffff8107da51>] ? ns_capable+0x4d/0x65
        [<ffffffff817de5ce>] rtnetlink_rcv_msg+0x181/0x194
        [<ffffffff817de407>] ? rtnl_lock+0x17/0x19
        [<ffffffff817de407>] ? rtnl_lock+0x17/0x19
        [<ffffffff817de44d>] ? __rtnl_unlock+0x17/0x17
        [<ffffffff818327c6>] netlink_rcv_skb+0x4d/0x93
        [<ffffffff817de42f>] rtnetlink_rcv+0x26/0x2d
        [<ffffffff81830f18>] netlink_unicast+0xcb/0x150
        [<ffffffff8183198e>] netlink_sendmsg+0x501/0x523
        [<ffffffff8115cba9>] ? might_fault+0x59/0xa9
        [<ffffffff817b5398>] ? copy_from_user+0x2a/0x2c
        [<ffffffff817b7b74>] sock_sendmsg+0x34/0x3c
        [<ffffffff817b7f6d>] ___sys_sendmsg+0x1b8/0x255
        [<ffffffff8115c5eb>] ? handle_pte_fault+0xbd5/0xd4a
        [<ffffffff8100a2b0>] ? native_sched_clock+0x35/0x37
        [<ffffffff8109e94b>] ? sched_clock_local+0x12/0x72
        [<ffffffff8109eb9c>] ? sched_clock_cpu+0x9e/0xb7
        [<ffffffff810cadbf>] ? rcu_read_lock_held+0x3b/0x3d
        [<ffffffff811ac1d8>] ? __fcheck_files+0x4c/0x58
        [<ffffffff811ac946>] ? __fget_light+0x2d/0x52
        [<ffffffff817b8adc>] __sys_sendmsg+0x42/0x60
        [<ffffffff817b8b0c>] SyS_sendmsg+0x12/0x1c
        [<ffffffff81a29e32>] system_call_fastpath+0x12/0x17
      
      Fixes: e7ed828f ("netlink: support setting devgroup parameters")
      Signed-off-by: default avatarCong Wang <xiyou.wangcong@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d079535d
    • Michal Kubeček's avatar
      tcp: prevent fetching dst twice in early demux code · d0c294c5
      Michal Kubeček authored
      On s390x, gcc 4.8 compiles this part of tcp_v6_early_demux()
      
              struct dst_entry *dst = sk->sk_rx_dst;
      
              if (dst)
                      dst = dst_check(dst, inet6_sk(sk)->rx_dst_cookie);
      
      to code reading sk->sk_rx_dst twice, once for the test and once for
      the argument of ip6_dst_check() (dst_check() is inline). This allows
      ip6_dst_check() to be called with null first argument, causing a crash.
      
      Protect sk->sk_rx_dst access by READ_ONCE() both in IPv4 and IPv6
      TCP early demux code.
      
      Fixes: 41063e9d ("ipv4: Early TCP socket demux.")
      Fixes: c7109986 ("ipv6: Early TCP socket demux")
      Signed-off-by: default avatarMichal Kubecek <mkubecek@suse.cz>
      Acked-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d0c294c5
    • Yuval Mintz's avatar
      bnx2x: Fix statistics locking scheme · dff173de
      Yuval Mintz authored
      Statistics' state-machine in bnx2x driver must be synced with various driver
      flows, but its current locking scheme manages to be wasteful [using 2 locks +
      additional local variable] and prone to race-conditions at the same time,
      as the state-machine and 'action' are being accessed under different locks.
      
      In addition, current 'safe exec' isn't in fact safe, since the only guarantee
      it gives is that DMA transactions are over, but ramrods might still be running.
      
      This patch cleans up said logic, leaving us with a single lock for the entire
      flow and removing the possible races.
      
      Changes from v2:
      	- Switched into mutex locking from semaphore locking.
      	- Release locks on error flows.
      
      Changes from v1:
      	Failure to acquire lock fails flow instead of printing a warning and
      	allowing access to the critical section.
      Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@qlogic.com>
      Signed-off-by: default avatarAriel Elior <Ariel.Elior@qlogic.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      dff173de
    • David S. Miller's avatar
      Merge tag 'linux-can-fixes-for-4.0-20150322' of... · 7ef70aab
      David S. Miller authored
      Merge tag 'linux-can-fixes-for-4.0-20150322' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
      
      Marc Kleine-Budde says:
      
      ====================
      pull-request: can 2015-03-22
      
      this is a pull-request of 7 patches for net/master.
      
      Ahmed S. Darwish fixes another two problems in the kvaser_usb driver. A patch
      by Colin Ian King for the gs_usb driver adds a missing check for kzalloc
      allocation failures. Two patches by Stephane Grosjean for the peak_usb driver
      add missing support for ISO / non-ISO mode switching. Andri Yngvason
      contributes a patch to fix the state handling in the flexcan driver. The last
      patch by Andreas Werner for the flexcan driver add missing EPROBE_DEFER
      handling for the transceiver regulator.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7ef70aab
  4. 23 Mar, 2015 4 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 90a5a895
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Validate iov ranges before feeding them into iov_iter_init(), from
          Al Viro.
      
       2) We changed copy_from_msghdr_from_user() to zero out the msg_namelen
          is a NULL pointer is given for the msg_name.  Do the same in the
          compat code too.  From Catalin Marinas.
      
       3) Fix partially initialized tuples in netfilter conntrack helper, from
          Ian Wilson.
      
       4) Missing continue; statement in nft_hash walker can lead to crashes,
          from Herbert Xu.
      
       5) tproxy_tg6_check looks for IP6T_INV_PROTO in ->flags instead of
          ->invflags, fix from Pablo Neira Ayuso.
      
       6) Incorrect memory account of TCP FINs can result in negative socket
          memory accounting values.  Fix from Josh Hunt.
      
       7) Don't allow virtual functions to enable VLAN promiscuous mode in
          be2net driver, from Vasundhara Volam.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
        netfilter: nft_compat: set IP6T_F_PROTO flag if protocol is set
        cx82310_eth: wait for firmware to become ready
        net: validate the range we feed to iov_iter_init() in sys_sendto/sys_recvfrom
        net: compat: Update get_compat_msghdr() to match copy_msghdr_from_user() behaviour
        be2net: use PCI MMIO read instead of config read for errors
        be2net: restrict MODIFY_EQ_DELAY cmd to a max of 8 EQs
        be2net: Prevent VFs from enabling VLAN promiscuous mode
        tcp: fix tcp fin memory accounting
        ipv6: fix backtracking for throw routes
        net: ethernet: pcnet32: Setup the SRAM and NOUFLO on Am79C97{3, 5}
        ipv6: call ipv6_proxy_select_ident instead of ipv6_select_ident in udp6_ufo_fragment
        netfilter: xt_TPROXY: fix invflags check in tproxy_tg6_check()
        netfilter: restore rule tracing via nfnetlink_log
        netfilter: nf_tables: allow to change chain policy without hook if it exists
        netfilter: Fix potential crash in nft_hash walker
        netfilter: Zero the tuple in nfnl_cthelper_parse_tuple()
      90a5a895
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · d5049617
      Linus Torvalds authored
      Pull sparc fixes from David Miller:
       "Some perf bug fixes from David Ahern, and the fix for that nasty
        memmove() bug"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
        sparc64: Fix several bugs in memmove().
        sparc: Touch NMI watchdog when walking cpus and calling printk
        sparc: perf: Add support M7 processor
        sparc: perf: Make counting mode actually work
        sparc: perf: Remove redundant perf_pmu_{en|dis}able calls
      d5049617
    • David S. Miller's avatar
      sparc64: Fix several bugs in memmove(). · 2077cef4
      David S. Miller authored
      Firstly, handle zero length calls properly.  Believe it or not there
      are a few of these happening during early boot.
      
      Next, we can't just drop to a memcpy() call in the forward copy case
      where dst <= src.  The reason is that the cache initializing stores
      used in the Niagara memcpy() implementations can end up clearing out
      cache lines before we've sourced their original contents completely.
      
      For example, considering NG4memcpy, the main unrolled loop begins like
      this:
      
           load   src + 0x00
           load   src + 0x08
           load   src + 0x10
           load   src + 0x18
           load   src + 0x20
           store  dst + 0x00
      
      Assume dst is 64 byte aligned and let's say that dst is src - 8 for
      this memcpy() call.  That store at the end there is the one to the
      first line in the cache line, thus clearing the whole line, which thus
      clobbers "src + 0x28" before it even gets loaded.
      
      To avoid this, just fall through to a simple copy only mildly
      optimized for the case where src and dst are 8 byte aligned and the
      length is a multiple of 8 as well.  We could get fancy and call
      GENmemcpy() but this is good enough for how this thing is actually
      used.
      Reported-by: default avatarDavid Ahern <david.ahern@oracle.com>
      Reported-by: default avatarBob Picco <bpicco@meloft.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2077cef4
    • Kalle Valo's avatar
      Merge tag 'iwlwifi-for-kalle-2014-03-22' of... · 6ae4ccfe
      Kalle Valo authored
      Merge tag 'iwlwifi-for-kalle-2014-03-22' of https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes
      
      * avoid panic with lots of IBSS stations
      * Fix dvm's behavior after suspend resume
      * Allow to keep connection after CSA failure
      * Remove a noisy by harmless WARN_ON
      * New device IDs
      6ae4ccfe
  5. 22 Mar, 2015 17 commits
  6. 21 Mar, 2015 4 commits
    • Ondrej Zary's avatar
      cx82310_eth: wait for firmware to become ready · f40bff42
      Ondrej Zary authored
      When the device is powered up, some (older) firmware versions fail to work
      properly if we send commands before the boot is complete (everything is OK
      when the device is hot-plugged). The firmware indicates its ready status by
      putting the link up.
      Newer firmwares delay the first command so they don't suffer from this problem.
      They also report the link being always up.
      
      Wait for firmware to become ready (link up) before sending any commands and/or
      data.
      
      This also allows lowering CMD_TIMEOUT value to a reasonable time.
      
      Tested with 4.1.0.9 (old) and 4.1.0.30 (new) firmware versions.
      Signed-off-by: default avatarOndrej Zary <linux@rainbow-software.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f40bff42
    • Linus Torvalds's avatar
      Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma · f8975224
      Linus Torvalds authored
      Pull slave dmaengine fixes from Vinod Koul:
       "Four fixes for dw, pl08x, imx-sdma and at_hdmac driver.  Nothing
        unusual here, simple fixes to these drivers"
      
      * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
        dmaengine: pl08x: Define capabilities for generic capabilities reporting
        dmaengine: dw: append MODULE_ALIAS for platform driver
        dmaengine: imx-sdma: switch to dynamic context mode after script loaded
        dmaengine: at_hdmac: Fix calculation of the residual bytes
      f8975224
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 3d7a6db5
      Linus Torvalds authored
      Pull power management and ACPI fixes from Rafael Wysocki:
       "These are fixes for recent regressions (PCI/ACPI resources and at91
        RTC locking), a stable-candidate powercap RAPL driver fix and two ARM
        cpuidle fixes (one stable-candidate too).
      
        Specifics:
      
         - Revert a recent PCI commit related to IRQ resources management that
           introduced a regression for drivers attempting to bind to devices
           whose previous drivers did not balance pci_enable_device() and
           pci_disable_device() as expected (Rafael J Wysocki).
      
         - Fix a deadlock in at91_rtc_interrupt() introduced by a typo in a
           recent commit related to wakeup interrupt handling (Dan Carpenter).
      
         - Allow the power capping RAPL (Running-Average Power Limit) driver
           to use different energy units for domains within one CPU package
           which is necessary to handle Intel Haswell EP processors correctly
           (Jacob Pan).
      
         - Improve the cpuidle mvebu driver's handling of Armada XP SoCs by
           updating the target residency and exit latency numbers for those
           chips (Sebastien Rannou).
      
         - Prevent the cpuidle mvebu driver from calling cpu_pm_enter() twice
           in a row before cpu_pm_exit() is called on the same CPU which
           breaks the core's assumptions regarding the usage of those
           functions (Gregory Clement)"
      
      * tag 'pm+acpi-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        Revert "x86/PCI: Refine the way to release PCI IRQ resources"
        rtc: at91rm9200: double locking bug in at91_rtc_interrupt()
        powercap / RAPL: handle domains with different energy units
        cpuidle: mvebu: Update cpuidle thresholds for Armada XP SOCs
        cpuidle: mvebu: Fix the CPU PM notifier usage
      3d7a6db5
    • Linus Torvalds's avatar
      Merge git://people.freedesktop.org/~airlied/linux · 97448d5b
      Linus Torvalds authored
      Pull drm updates from Dave Airlie:
       "A bunch of fixes across drivers:
      
        radeon:
           disable two ended allocation for now, it breaks some stuff
      
        amdkfd:
           misc fixes
      
        nouveau:
           fix irq loop problem, add basic support for GM206 (new hw)
      
        i915:
           fix some WARNs people were seeing
      
        exynos:
           fix some iommu interactions causing boot failures"
      
      * git://people.freedesktop.org/~airlied/linux:
        drm/radeon: drop ttm two ended allocation
        drm/exynos: fix the initialization order in FIMD
        drm/exynos: fix typo config name correctly.
        drm/exynos: Check for NULL dereference of crtc
        drm/exynos: IS_ERR() vs NULL bug
        drm/exynos: remove unused files
        drm/i915: Make sure the primary plane is enabled before reading out the fb state
        drm/nouveau/bios: fix i2c table parsing for dcb 4.1
        drm/nouveau/device/gm100: Basic GM206 bring up (as copy of GM204)
        drm/nouveau/device: post write to NV_PMC_BOOT_1 when flipping endian switch
        drm/nouveau/gr/gf100: fix some accidental or'ing of buffer addresses
        drm/nouveau/fifo/nv04: remove the loop from the interrupt handler
        drm/radeon: Changing number of compute pipe lines
        drm/amdkfd: Fix SDMA queue init. in non-HWS mode
        drm/amdkfd: destroy mqd when destroying kernel queue
        drm/i915: Ensure plane->state->fb stays in sync with plane->fb
      97448d5b