1. 23 Apr, 2016 6 commits
  2. 22 Apr, 2016 18 commits
  3. 21 Apr, 2016 16 commits
    • cpaul@redhat.com's avatar
      drm/dp/mst: Validate port in drm_dp_payload_send_msg() · deba0a2a
      cpaul@redhat.com authored
      With the joys of things running concurrently, there's always a chance
      that the port we get passed in drm_dp_payload_send_msg() isn't actually
      valid anymore. Because of this, we need to make sure we validate the
      reference to the port before we use it otherwise we risk running into
      various race conditions. For instance, on the Dell MST monitor I have
      here for testing, hotplugging it enough times causes us to kernel panic:
      
      [drm:intel_mst_enable_dp] 1
      [drm:drm_dp_update_payload_part2] payload 0 1
      [drm:intel_get_hpd_pins] hotplug event received, stat 0x00200000, dig 0x10101011, pins 0x00000020
      [drm:intel_hpd_irq_handler] digital hpd port B - short
      [drm:intel_dp_hpd_pulse] got hpd irq on port B - short
      [drm:intel_dp_check_mst_status] got esi 00 10 00
      [drm:drm_dp_update_payload_part2] payload 1 1
      general protection fault: 0000 [#1] SMP
      …
      Call Trace:
       [<ffffffffa012b632>] drm_dp_update_payload_part2+0xc2/0x130 [drm_kms_helper]
       [<ffffffffa032ef08>] intel_mst_enable_dp+0xf8/0x180 [i915]
       [<ffffffffa0310dbd>] haswell_crtc_enable+0x3ed/0x8c0 [i915]
       [<ffffffffa030c84d>] intel_atomic_commit+0x5ad/0x1590 [i915]
       [<ffffffffa01db877>] ? drm_atomic_set_crtc_for_connector+0x57/0xe0 [drm]
       [<ffffffffa01dc4e7>] drm_atomic_commit+0x37/0x60 [drm]
       [<ffffffffa0130a3a>] drm_atomic_helper_set_config+0x7a/0xb0 [drm_kms_helper]
       [<ffffffffa01cc482>] drm_mode_set_config_internal+0x62/0x100 [drm]
       [<ffffffffa01d02ad>] drm_mode_setcrtc+0x3cd/0x4e0 [drm]
       [<ffffffffa01c18e3>] drm_ioctl+0x143/0x510 [drm]
       [<ffffffffa01cfee0>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
       [<ffffffff810f79a7>] ? hrtimer_start_range_ns+0x1b7/0x3a0
       [<ffffffff81212962>] do_vfs_ioctl+0x92/0x570
       [<ffffffff81590852>] ? __sys_recvmsg+0x42/0x80
       [<ffffffff81212eb9>] SyS_ioctl+0x79/0x90
       [<ffffffff816b4e32>] entry_SYSCALL_64_fastpath+0x1a/0xa4
      RIP  [<ffffffffa012b026>] drm_dp_payload_send_msg+0x146/0x1f0 [drm_kms_helper]
      
      Which occurs because of the hotplug event shown in the log, which ends
      up causing DRM's dp helpers to drop the port we're updating the payload
      on and panic.
      
      CC: stable@vger.kernel.org
      Signed-off-by: default avatarLyude <cpaul@redhat.com>
      Reviewed-by: default avatarDavid Airlie <airlied@linux.ie>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      deba0a2a
    • Dave Airlie's avatar
      Merge branch 'linux-4.6' of git://github.com/skeggsb/linux into drm-fixes · 3addc4e3
      Dave Airlie authored
      Single nouveau regression fix
      * 'linux-4.6' of git://github.com/skeggsb/linux:
        drm/nouveau/kms: fix setting of default values for dithering properties
      3addc4e3
    • Ben Skeggs's avatar
    • Dave Airlie's avatar
      Merge tag 'drm-intel-fixes-2016-04-21' of git://anongit.freedesktop.org/drm-intel into drm-fixes · 762ce445
      Dave Airlie authored
      Hi Dave, fixes all around, all but one are cc: stable material, the most
      important ones are likely the Skylake hang fixes from Mika.
      
      * tag 'drm-intel-fixes-2016-04-21' of git://anongit.freedesktop.org/drm-intel:
        drm/i915: Use fw_domains_put_with_fifo() on HSW
        drm/i915: Force ringbuffers to not be at offset 0
        drm/i915: Adjust size of PIPE_CONTROL used for gen8 render seqno write
        drm/i915/skl: Fix spurious gpu hang with gt3/gt4 revs
        drm/i915/skl: Fix rc6 based gpu/system hang
        drm/i915/userptr: Hold mmref whilst calling get-user-pages
        drm/i915: Fixup the free space logic in ring_prepare
        drm/i915/skl+: Use plane size for relative data rate calculation
      762ce445
    • Linus Torvalds's avatar
      Merge tag 'rtc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux · 5f44abd0
      Linus Torvalds authored
      Pull RTC fixes from Alexandre Belloni:
       "A few fixes for the RTC subsystem.  The documentation fix already
        missed 4.5 so I think it is worth taking it now:
      
        A documentation fix for s3c and two fixes for the ds1307"
      
      * tag 'rtc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
        rtc: ds1307: Use irq when available for wakeup-source device
        rtc: ds1307: ds3231 temperature s16 overflow
        rtc: s3c: Document in binding that only s3c6410 needs a src clk
      5f44abd0
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · f78fe081
      Linus Torvalds authored
      Pull power management fixes from Rafael Wysocki:
       "Two fixes for issues introduced recently, one for an intel_pstate
        driver problem uncovered by the recent switch over from using timers
        and the other one for a potential cpufreq core problem related to
        system suspend/resume.
      
        Specifics:
      
         - Fix an intel_pstate driver problem causing CPUs to get stuck in the
           highest P-state when completely idle uncovered by the recent switch
           over from using timers (Rafael Wysocki).
      
         - Avoid attempts to get the current CPU frequency when all devices
           (like I2C controllers that may be nedded for that purpose) have
           been suspended during system suspend/resume (Rafael Wysocki)"
      
      * tag 'pm+acpi-4.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        cpufreq: Abort cpufreq_update_current_freq() for cpufreq_suspended set
        intel_pstate: Avoid getting stuck in high P-states when idle
      f78fe081
    • Nishanth Menon's avatar
      rtc: ds1307: Use irq when available for wakeup-source device · 38a7a73e
      Nishanth Menon authored
      With commit 8bc2a407 ("rtc: ds1307: add support for the
      DT property 'wakeup-source'") we lost the ability for rtc irq
      functionality for devices that are actually hooked on a real IRQ
      line and have capability to wakeup as well. This is not an expected
      behavior. So, instead of just not requesting IRQ, skip the IRQ
      requirement only if interrupts are not defined for the device.
      
      Fixes: 8bc2a407 ("rtc: ds1307: add support for the DT property 'wakeup-source'")
      Reported-by: default avatarTony Lindgren <tony@atomide.com>
      Cc: Michael Lange <linuxstuff@milaw.biz>
      Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
      Signed-off-by: default avatarNishanth Menon <nm@ti.com>
      Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
      38a7a73e
    • Zhuang Yuyao's avatar
      rtc: ds1307: ds3231 temperature s16 overflow · 9a3dce62
      Zhuang Yuyao authored
      while retrieving temperature from ds3231, the result may be overflow
      since s16 is too small for a multiplication with 250.
      
      ie. if temp_buf[0] == 0x2d, the result (s16 temp) will be negative.
      Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
      Tested-by: default avatarMichael Tatarinov <kukabu@gmail.com>
      Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
      9a3dce62
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · c5edde3a
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix memory leak in iwlwifi, from Matti Gottlieb.
      
       2) Add missing registration of netfilter arp_tables into initial
          namespace, from Florian Westphal.
      
       3) Fix potential NULL deref in DecNET routing code.
      
       4) Restrict NETLINK_URELEASE to truly bound sockets only, from Dmitry
          Ivanov.
      
       5) Fix dst ref counting in VRF, from David Ahern.
      
       6) Fix TSO segmenting limits in i40e driver, from Alexander Duyck.
      
       7) Fix heap leak in PACKET_DIAG_MCLIST, from Mathias Krause.
      
       8) Ravalidate IPV6 datagram socket cached routes properly, particularly
          with UDP, from Martin KaFai Lau.
      
       9) Fix endian bug in RDS dp_ack_seq handling, from Qing Huang.
      
      10) Fix stats typing in bcmgenet driver, from Eric Dumazet.
      
      11) Openvswitch needs to orphan SKBs before ipv6 fragmentation handing,
          from Joe Stringer.
      
      12) SPI device reference leak in spi_ks8895 PHY driver, from Mark Brown.
      
      13) atl2 doesn't actually support scatter-gather, so don't advertise the
          feature.  From Ben Hucthings.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (72 commits)
        openvswitch: use flow protocol when recalculating ipv6 checksums
        Driver: Vmxnet3: set CHECKSUM_UNNECESSARY for IPv6 packets
        atl2: Disable unimplemented scatter/gather feature
        net/mlx4_en: Split SW RX dropped counter per RX ring
        net/mlx4_core: Don't allow to VF change global pause settings
        net/mlx4_core: Avoid repeated calls to pci enable/disable
        net/mlx4_core: Implement pci_resume callback
        net: phy: spi_ks8895: Don't leak references to SPI devices
        net: ethernet: davinci_emac: Fix platform_data overwrite
        net: ethernet: davinci_emac: Fix Unbalanced pm_runtime_enable
        qede: Fix single MTU sized packet from firmware GRO flow
        qede: Fix setting Skb network header
        qede: Fix various memory allocation error flows for fastpath
        tcp: Merge tx_flags and tskey in tcp_shifted_skb
        tcp: Merge tx_flags and tskey in tcp_collapse_retrans
        drivers: net: cpsw: fix wrong regs access in cpsw_ndo_open
        tcp: Fix SOF_TIMESTAMPING_TX_ACK when handling dup acks
        openvswitch: Orphan skbs before IPv6 defrag
        Revert "Prevent NUll pointer dereference with two PHYs on cpsw"
        VSOCK: Only check error on skb_recv_datagram when skb is NULL
        ...
      c5edde3a
    • Simon Horman's avatar
      openvswitch: use flow protocol when recalculating ipv6 checksums · b4f70527
      Simon Horman authored
      When using masked actions the ipv6_proto field of an action
      to set IPv6 fields may be zero rather than the prevailing protocol
      which will result in skipping checksum recalculation.
      
      This patch resolves the problem by relying on the protocol
      in the flow key rather than that in the set field action.
      
      Fixes: 83d2b9ba ("net: openvswitch: Support masked set actions.")
      Cc: Jarno Rajahalme <jrajahalme@nicira.com>
      Signed-off-by: default avatarSimon Horman <simon.horman@netronome.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b4f70527
    • Shrikrishna Khare's avatar
      Driver: Vmxnet3: set CHECKSUM_UNNECESSARY for IPv6 packets · f0d43780
      Shrikrishna Khare authored
      For IPv6, if the device indicates that the checksum is correct, set
      CHECKSUM_UNNECESSARY.
      Reported-by: default avatarSubbarao Narahari <snarahari@vmware.com>
      Signed-off-by: default avatarShrikrishna Khare <skhare@vmware.com>
      Signed-off-by: default avatarJin Heo <heoj@vmware.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f0d43780
    • Ben Hutchings's avatar
      atl2: Disable unimplemented scatter/gather feature · f43bfaed
      Ben Hutchings authored
      atl2 includes NETIF_F_SG in hw_features even though it has no support
      for non-linear skbs.  This bug was originally harmless since the
      driver does not claim to implement checksum offload and that used to
      be a requirement for SG.
      
      Now that SG and checksum offload are independent features, if you
      explicitly enable SG *and* use one of the rare protocols that can use
      SG without checkusm offload, this potentially leaks sensitive
      information (before you notice that it just isn't working).  Therefore
      this obscure bug has been designated CVE-2016-2117.
      Reported-by: default avatarJustin Yackoski <jyackoski@crypto-nite.com>
      Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
      Fixes: ec5f0615 ("net: Kill link between CSUM and SG features.")
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f43bfaed
    • Paul Burton's avatar
      irqchip/mips-gic: Don't overrun pcpu_masks array · 91951f98
      Paul Burton authored
      Commit 2a078705 ("irqchip/mips-gic: Use gic_vpes instead of
      NR_CPUS") & commit 78930f09 ("irqchip/mips-gic: Clear percpu_masks
      correctly when mapping") both introduce code which accesses gic_vpes
      entries in the pcpu_masks array. However, this array has length NR_CPUS.
      If NR_CPUS is less than gic_vpes (ie. the kernel supports use of less
      CPUs than are present in the system) then we overrun the array, clobber
      some other data & generally die pretty promptly.
      
      Most notably this affects uniprocessor kernels running on any multicore
      or multithreaded Malta with a GIC (ie. the vast majority of real Malta
      boards).
      
      Fix this by only accessing up to min(gic_vpes, NR_CPUS) entries in the
      pcpu_masks array, preventing the array overrun.
      
      Fixes: 2a078705 ("irqchip/mips-gic: Use gic_vpes instead of NR_CPUS")
      Fixes: 78930f09 ("irqchip/mips-gic: Clear percpu_masks correctly when mapping")
      Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Cc: Jason Cooper <jason@lakedaemon.net>
      Cc: Marc Zyngier <marc.zyngier@arm.com>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Link: http://lkml.kernel.org/r/1461234714-9975-1-git-send-email-paul.burton@imgtec.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      91951f98
    • David S. Miller's avatar
      Merge branch 'mlx4-fixes' · 669c00c0
      David S. Miller authored
      Or Gerlitz says:
      
      ====================
      Mellaox 40G driver fixes for 4.6-rc
      
      With the fix for ARM bug being under the works, these are
      few other fixes for mlx4 we have ready to go.
      
      Eran addressed the problematic/wrong reporting of dropped packets, Daniel
      fixed some matters related to PPC EEH's and Jenny's patch makes sure
      VFs can't change the port's pause settings.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      669c00c0
    • Eran Ben Elisha's avatar
      net/mlx4_en: Split SW RX dropped counter per RX ring · d21ed3a3
      Eran Ben Elisha authored
      Count SW packet drops per RX ring instead of a global counter. This
      will allow monitoring the number of rx drops per ring.
      
      In addition, SW rx_dropped counter was overwritten by HW rx_dropped
      counter, sum both of them instead to show the accurate value.
      
      Fixes: a3333b35 ('net/mlx4_en: Moderate ethtool callback to [...] ')
      Signed-off-by: default avatarEran Ben Elisha <eranbe@mellanox.com>
      Reported-by: default avatarBrenden Blanco <bblanco@plumgrid.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
      Reported-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d21ed3a3
    • Eugenia Emantayev's avatar
      net/mlx4_core: Don't allow to VF change global pause settings · 2a500090
      Eugenia Emantayev authored
      Currently changing global pause settings is done via SET_PORT
      command with input modifier GENERAL. This command is allowed
      for each VF since MTU setting is done via the same command.
      
      Change the above to the following scheme: before passing the
      request to the FW, the PF will check whether it was issued
      by a slave. If yes, don't change global pause and warn,
      otherwise change to the requested value and store for
      further reference.
      Signed-off-by: default avatarEugenia Emantayev <eugenia@mellanox.com>
      Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
      Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2a500090