1. 14 Jan, 2016 1 commit
  2. 11 Jan, 2016 2 commits
  3. 10 Jan, 2016 1 commit
  4. 09 Jan, 2016 3 commits
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · eac6f76a
      Linus Torvalds authored
      Pull SCSI fix from James Bottomley:
       "A single fix for machines with pages > 4k (PPC mostly).
      
        There's a bug in our optimal transfer size code where we don't account
        for pages > 4k and can set the transfer size to be less than the page
        size causing nasty failures"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        sd: Reject optimal transfer length smaller than page size
      eac6f76a
    • Linus Torvalds's avatar
      Merge tag 'pci-v4.4-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · c0cb1393
      Linus Torvalds authored
      Pull PCI fixlet from Bjorn Helgaas:
       "This marks the TI DRA7xx host bridge driver as broken.  Apparently it
        has never worked without some additional out-of-tree code, so I'm
        going to mark it broken now and remove it completely next cycle unless
        it's fixed"
      
      * tag 'pci-v4.4-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
        PCI: dra7xx: Mark driver as broken
      c0cb1393
    • Michal Hocko's avatar
      vmstat: allocate vmstat_wq before it is used · 751e5f5c
      Michal Hocko authored
      kernel test robot has reported the following crash:
      
        BUG: unable to handle kernel NULL pointer dereference at 00000100
        IP: [<c1074df6>] __queue_work+0x26/0x390
        *pdpt = 0000000000000000 *pde = f000ff53f000ff53 *pde = f000ff53f000ff53
        Oops: 0000 [#1] PREEMPT PREEMPT SMP SMP
        CPU: 0 PID: 24 Comm: kworker/0:1 Not tainted 4.4.0-rc4-00139-g373ccbe5 #1
        Workqueue: events vmstat_shepherd
        task: cb684600 ti: cb7ba000 task.ti: cb7ba000
        EIP: 0060:[<c1074df6>] EFLAGS: 00010046 CPU: 0
        EIP is at __queue_work+0x26/0x390
        EAX: 00000046 EBX: cbb37800 ECX: cbb37800 EDX: 00000000
        ESI: 00000000 EDI: 00000000 EBP: cb7bbe68 ESP: cb7bbe38
         DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
        CR0: 8005003b CR2: 00000100 CR3: 01fd5000 CR4: 000006b0
        Stack:
        Call Trace:
          __queue_delayed_work+0xa1/0x160
          queue_delayed_work_on+0x36/0x60
          vmstat_shepherd+0xad/0xf0
          process_one_work+0x1aa/0x4c0
          worker_thread+0x41/0x440
          kthread+0xb0/0xd0
          ret_from_kernel_thread+0x21/0x40
      
      The reason is that start_shepherd_timer schedules the shepherd work item
      which uses vmstat_wq (vmstat_shepherd) before setup_vmstat allocates
      that workqueue so if the further initialization takes more than HZ we
      might end up scheduling on a NULL vmstat_wq.  This is really unlikely
      but not impossible.
      
      Fixes: 373ccbe5 ("mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't make any progress")
      Reported-by: default avatarkernel test robot <ying.huang@linux.intel.com>
      Signed-off-by: default avatarMichal Hocko <mhocko@suse.com>
      Tested-by: default avatarTetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
      Cc: stable@vger.kernel.org
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      751e5f5c
  5. 08 Jan, 2016 15 commits
  6. 07 Jan, 2016 10 commits
  7. 06 Jan, 2016 8 commits
    • Rameshwar Prasad Sahu's avatar
      dmaengine: xgene-dma: Fix double IRQ issue by setting IRQ_DISABLE_UNLAZY flag · b0b79024
      Rameshwar Prasad Sahu authored
      For interrupt controller that doesn't support irq_disable and hardware
      with level interrupt, an extra interrupt can be pending. This patch fixes
      the issue by setting IRQ_DISABLE_UNLAZY flag for the interrupt line.
      
      Reference: http://git.kernel.org/tip/e9849777d0e27cdd2902805be51da73e7c79578cSigned-off-by: default avatarRameshwar Prasad Sahu <rsahu@apm.com>
      Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
      b0b79024
    • NeilBrown's avatar
      async_tx: use GFP_NOWAIT rather than GFP_IO · b02bab6b
      NeilBrown authored
      These async_XX functions are called from md/raid5 in an atomic
      section, between get_cpu() and put_cpu(), so they must not sleep.
      So use GFP_NOWAIT rather than GFP_IO.
      
      Dan Williams writes: Longer term async_tx needs to be merged into md
      directly as we can allocate this unmap data statically per-stripe
      rather than per request.
      
      Fixed: 7476bd79 ("async_pq: convert to dmaengine_unmap_data")
      Cc: stable@vger.kernel.org (v3.13+)
      Reported-and-tested-by: default avatarStanislav Samsonov <slava@annapurnalabs.com>
      Acked-by: default avatarDan Williams <dan.j.williams@intel.com>
      Signed-off-by: default avatarNeilBrown <neilb@suse.com>
      Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
      b02bab6b
    • Linus Walleij's avatar
      ARM: versatile: fix MMC/SD interrupt assignment · 20f12758
      Linus Walleij authored
      Commit 0976c946
      "arm/versatile: Fix versatile irq specifications"
      has an off-by-one error on the Versatile AB that has
      been regressing the Versatile AB hardware for some time.
      
      However it seems like the interrupt assignments have
      never been correct and I have now adjusted them according
      to the specification. The masks for the valid interrupts
      made it impossible to assign the right SIC interrupt
      for the MMCI, so I went in and fixed these to correspond
      to the specifications, and added references if anyone
      wants to double-check.
      
      Due to the Versatile PB including the Versatile AB
      as a base DTS file, we need to override and correct
      some values to correspond to the actual changes in the
      hardware.
      
      For the Versatile PB I don't think the IRQ line
      assignment for MMCI has ever been correct for either of
      the two MMCI blocks. It would be nice if someone with the
      physical PB board could test this.
      
      Patch tested on the Versatile AB, QEMU for Versatile AB
      and QEMU for Versatile PB.
      
      Cc: Rob Herring <robh@kernel.org>
      Cc: Grant Likely <grant.likely@linaro.org>
      Cc: stable@vger.kernel.org
      Fixes: 0976c946 ("arm/versatile: Fix versatile irq specifications")
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      20f12758
    • Linus Walleij's avatar
      ARM: nomadik: set latencies to 8 cycles · a461a3ec
      Linus Walleij authored
      The Nomadik has sporadic crashes because of these latencies, setting
      them to max makes the platform work nicely, so use this values for
      now.
      
      These latencies were set to 2 since the Nomadik platform was merged,
      but I suspect they never took effect until the right size and
      associativity for the cache was specified in the device tree and
      that is why the crash comes now.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      a461a3ec
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20160106' of git://git.infradead.org/linux-mtd · b06f3a16
      Linus Torvalds authored
      Pull MTD fixes from Brian Norris:
       "Three last MTD fixes for v4.4.  These are all fixes for regressions
        and bugs reported mid cycle.  Unfortunately, some of them took a bit
        long to get proper testing and feedback.
      
         - Assign the default MTD name earlier in the registration process, so
           partition parsers (like cmdlinepart) see the right name.  Without
           this, some systems may come up with unpartitioned flash.  This was
           a v4.4-rc1 regression.
      
         - Revert some new Winbond SPI NOR flash unlocking/locking support;
           new code in v4.4 caused regressions on some Spansion flash.
      
         - Fix mis-typed parameter ordering in SPI NOR unlock function; this
           bug was introduced in v4.4-rc1"
      
      * tag 'for-linus-20160106' of git://git.infradead.org/linux-mtd:
        mtd: spi-nor: fix stm_is_locked_sr() parameters
        mtd: spi-nor: fix Spansion regressions (aliased with Winbond)
        mtd: fix cmdlinepart parser, early naming for auto-filled MTD
      b06f3a16
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 51cb67c0
      Linus Torvalds authored
      Pull networking fixes from David Miller:
       "As usual, there are a couple straggler bug fixes:
      
         1) qlcnic_alloc_mbx_args() error returns are not checked in qlcnic
            driver.  Fix from Insu Yun.
      
         2) SKB refcounting bug in connector, from Florian Westphal.
      
         3) vrf_get_saddr() has to propagate fib_lookup() errors to it's
            callers, from David Ahern.
      
         4) Fix AF_UNIX splice/bind deadlock, from Rainer Weikusat.
      
         5) qdisc_rcu_free() fails to free the per-cpu qstats.  Fix from John
            Fastabend.
      
         6) vmxnet3 driver passes wrong page to dma_map_page(), fix from
           Shrikrishna Khare.
      
         7) Don't allow zero cwnd in tcp_cwnd_reduction(), from Yuchung Cheng"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
        tcp: fix zero cwnd in tcp_cwnd_reduction
        Driver: Vmxnet3: Fix regression caused by 5738a09d
        net: qmi_wwan: Add WeTelecom-WPD600N
        mkiss: fix scribble on freed memory
        net: possible use after free in dst_release
        net: sched: fix missing free per cpu on qstats
        ARM: net: bpf: fix zero right shift
        6pack: fix free memory scribbles
        net: filter: make JITs zero A for SKF_AD_ALU_XOR_X
        bridge: Only call /sbin/bridge-stp for the initial network namespace
        af_unix: Fix splice-bind deadlock
        net: Propagate lookup failure in l3mdev_get_saddr to caller
        r8152: add reset_resume function
        connector: bump skb->users before callback invocation
        cxgb4: correctly handling failed allocation
        qlcnic: correctly handle qlcnic_alloc_mbx_args
      51cb67c0
    • Yuchung Cheng's avatar
      tcp: fix zero cwnd in tcp_cwnd_reduction · 8b8a321f
      Yuchung Cheng authored
      Patch 3759824d ("tcp: PRR uses CRB mode by default and SS mode
      conditionally") introduced a bug that cwnd may become 0 when both
      inflight and sndcnt are 0 (cwnd = inflight + sndcnt). This may lead
      to a div-by-zero if the connection starts another cwnd reduction
      phase by setting tp->prior_cwnd to the current cwnd (0) in
      tcp_init_cwnd_reduction().
      
      To prevent this we skip PRR operation when nothing is acked or
      sacked. Then cwnd must be positive in all cases as long as ssthresh
      is positive:
      
      1) The proportional reduction mode
         inflight > ssthresh > 0
      
      2) The reduction bound mode
        a) inflight == ssthresh > 0
      
        b) inflight < ssthresh
           sndcnt > 0 since newly_acked_sacked > 0 and inflight < ssthresh
      
      Therefore in all cases inflight and sndcnt can not both be 0.
      We check invalid tp->prior_cwnd to avoid potential div0 bugs.
      
      In reality this bug is triggered only with a sequence of less common
      events.  For example, the connection is terminating an ECN-triggered
      cwnd reduction with an inflight 0, then it receives reordered/old
      ACKs or DSACKs from prior transmission (which acks nothing). Or the
      connection is in fast recovery stage that marks everything lost,
      but fails to retransmit due to local issues, then receives data
      packets from other end which acks nothing.
      
      Fixes: 3759824d ("tcp: PRR uses CRB mode by default and SS mode conditionally")
      Reported-by: default avatarOleksandr Natalenko <oleksandr@natalenko.name>
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8b8a321f
    • Shrikrishna Khare's avatar