1. 16 Aug, 2013 9 commits
    • Linus Torvalds's avatar
      Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm · 2620bf06
      Linus Torvalds authored
      Pull ARM fixes from Russell King:
       "The usual collection of random fixes.  Also some further fixes to the
        last set of security fixes, and some more from Will (which you may
        already have in a slightly different form)"
      
      * 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
        ARM: 7807/1: kexec: validate CPU hotplug support
        ARM: 7812/1: rwlocks: retry trylock operation if strex fails on free lock
        ARM: 7811/1: locks: use early clobber in arch_spin_trylock
        ARM: 7810/1: perf: Fix array out of bounds access in armpmu_map_hw_event()
        ARM: 7809/1: perf: fix event validation for software group leaders
        ARM: Fix FIQ code on VIVT CPUs
        ARM: Fix !kuser helpers case
        ARM: Fix the world famous typo with is_gate_vma()
      2620bf06
    • Linus Torvalds's avatar
      Merge branch 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k · 359d16ca
      Linus Torvalds authored
      Pull m68k fixes from Geert Uytterhoeven:
       "These are two critical fixes, needed by distro kernels, and thus also
        destined for stable:
      
         - The do_div() commit fixes a crash in mounting btrfs volumes, which
           was a regression from 3.2,
      
         - The ARAnyM fix allows to have NatFeat drivers as loadable modules,
           which is needed for initrds"
      
      * 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
        m68k: Truncate base in do_div()
        m68k/atari: ARAnyM - Fix NatFeat module support
      359d16ca
    • Linus Torvalds's avatar
      Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux · 0f7dd1aa
      Linus Torvalds authored
      Pull clock controller fixes from Michael Turquette:
       "Two small fixes for the Zynq clock controller introduced in 3.11-rc1
        and another Exynos clock patch which fixes a regression that prevents
        the video pipeline from functioning on that platform"
      
      * tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux:
        clk: exynos4: Add CLK_GET_RATE_NOCACHE flag for the Exynos4x12 ISP clocks
        clk/zynq/clkc: Add CLK_SET_RATE_PARENT flag to ethernet muxes
        clk/zynq/clkc: Add dedicated spinlock for the SWDT
      0f7dd1aa
    • Linus Torvalds's avatar
      Merge tag 'pm-3.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 2d2843e6
      Linus Torvalds authored
      Pull power management fix from Rafael Wysocki:
       "The removal of delayed_work_pending() checks from kernel/power/qos.c
        done in 3.9 introduced a deadlock in pm_qos_work_fn().
      
        Fix from Stephen Boyd"
      
      * tag 'pm-3.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        PM / QoS: Fix workqueue deadlock when using pm_qos_update_request_timeout()
      2d2843e6
    • Linus Torvalds's avatar
      Merge tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · f43c6064
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "This batch contains a few USB audio fixes, a couple of HD-audio
        quirks, various small ASoC driver fixes in addition to an ASoC core
        fix that may lead to memory corruption.
      
        Unfortunately slightly more volume than the previous pull request, but
        all are reasonable regression fixes"
      
      * tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: hda - Add a fixup for Gateway LT27
        ASoC: tegra: fix Tegra30 I2S capture parameter setup
        ALSA: usb-audio: Fix invalid volume resolution for Logitech HD Webcam C525
        ALSA: hda - Fix missing mute controls for CX5051
        ALSA: usb-audio: fix automatic Roland/Yamaha MIDI detection
        ALSA: 6fire: make buffers DMA-able (midi)
        ALSA: 6fire: make buffers DMA-able (pcm)
        ALSA: hda - Add pinfix for LG LW25 laptop
        ASoC: cs42l52: Add new TLV for Beep Volume
        ASoC: cs42l52: Reorder Min/Max and update to SX_TLV for Beep Volume
        ASoC: dapm: Fix empty list check in dapm_new_mux()
        ASoC: sgtl5000: fix buggy 'Capture Attenuate Switch' control
        ASoC: sgtl5000: prevent playback to be muted when terminating concurrent capture
      f43c6064
    • Linus Torvalds's avatar
      Merge tag 'usb-3.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · 89cb9ae2
      Linus Torvalds authored
      Pull USB fixes from Greg KH:
       "Here are some small USB fixes for 3.11-rc6 that have accumulated.
      
        Nothing huge, a EHCI fix that solves a much-reported audio USB
        problem, some usb-serial driver endian fixes and other minor fixes, a
        wireless USB oops fix, and two new quirks"
      
      * tag 'usb-3.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
        USB: keyspan: fix null-deref at disconnect and release
        USB: mos7720: fix broken control requests
        usb: add two quirky touchscreen
        USB: ti_usb_3410_5052: fix big-endian firmware handling
        USB: adutux: fix big-endian device-type reporting
        USB: usbtmc: fix big-endian probe of Rigol devices
        USB: mos7840: fix big-endian probe
        USB-Serial: Fix error handling of usb_wwan
        wusbcore: fix kernel panic when disconnecting a wireless USB->serial device
        USB: EHCI: accept very late isochronous URBs
      89cb9ae2
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · ddea368c
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix SKB leak in 8139cp, from Dave Jones.
      
       2) Fix use of *_PAGES interfaces with mlx5 firmware, from Moshe Lazar.
      
       3) RCU conversion of macvtap introduced two races, fixes by Eric
          Dumazet
      
       4) Synchronize statistic flows in bnx2x driver to prevent corruption,
          from Dmitry Kravkov
      
       5) Undo optimization in IP tunneling, we were using the inner IP header
          in some cases to inherit the IP ID, but that isn't correct in some
          circumstances.  From Pravin B Shelar
      
       6) Use correct struct size when parsing netlink attributes in
          rtnl_bridge_getlink().  From Asbjoern Sloth Toennesen
      
       7) Length verifications in tun_get_user() are bogus, from Weiping Pan
          and Dan Carpenter
      
       8) Fix bad merge resolution during 3.11 networking development in
          openvswitch, albeit a harmless one which added some unreachable
          code.  From Jesse Gross
      
       9) Wrong size used in flexible array allocation in openvswitch, from
          Pravin B Shelar
      
      10) Clear out firmware capability flags the be2net driver isn't ready to
          handle yet, from Sarveshwar Bandi
      
      11) Revert DMA mapping error checking addition to cxgb3 driver, it's
          buggy.  From Alexey Kardashevskiy
      
      12) Fix regression in packet scheduler rate limiting when working with a
          link layer of ATM.  From Jesper Dangaard Brouer
      
      13) Fix several errors in TCP Cubic congestion control, in particular
          overflow errors in timestamp calculations.  From Eric Dumazet and
          Van Jacobson
      
      14) In ipv6 routing lookups, we need to backtrack if subtree traversal
          don't result in a match.  From Hannes Frederic Sowa
      
      15) ipgre_header() returns incorrect packet offset.  Fix from Timo Teräs
      
      16) Get "low latency" out of the new MIB counter names.  From Eliezer
          Tamir
      
      17) State check in ndo_dflt_fdb_del() is inverted, from Sridhar
          Samudrala
      
      18) Handle TCP Fast Open properly in netfilter conntrack, from Yuchung
          Cheng
      
      19) Wrong memcpy length in pcan_usb driver, from Stephane Grosjean
      
      20) Fix dealock in TIPC, from Wang Weidong and Ding Tianhong
      
      21) call_rcu() call to destroy SCTP transport is done too early and
          might result in an oops.  From Daniel Borkmann
      
      22) Fix races in genetlink family dumps, from Johannes Berg
      
      23) Flags passed into macvlan by the user need to be validated properly,
          from Michael S Tsirkin
      
      24) Fix skge build on 32-bit, from Stephen Hemminger
      
      25) Handle malformed TCP headers properly in xt_TCPMSS, from Pablo Neira
          Ayuso
      
      26) Fix handling of stacked vlans in vlan_dev_real_dev(), from Nikolay
          Aleksandrov
      
      27) Eliminate MTU calculation overflows in esp{4,6}, from Daniel
          Borkmann
      
      28) neigh_parms need to be setup before calling the ->ndo_neigh_setup()
          method.  From Veaceslav Falico
      
      29) Kill out-of-bounds prefetch in fib_trie, from Eric Dumazet
      
      30) Don't dereference MLD query message if the length isn't value in the
          bridge multicast code, from Linus Lüssing
      
      31) Fix VXLAN IGMP join regression due to an inverted check, from Cong
          Wang
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (70 commits)
        net/mlx5_core: Support MANAGE_PAGES and QUERY_PAGES firmware command changes
        tun: signedness bug in tun_get_user()
        qlcnic: Fix diagnostic interrupt test for 83xx adapters
        qlcnic: Fix beacon state return status handling
        qlcnic: Fix set driver version command
        net: tg3: fix NULL pointer dereference in tg3_io_error_detected and tg3_io_slot_reset
        net_sched: restore "linklayer atm" handling
        drivers/net/ethernet/via/via-velocity.c: update napi implementation
        Revert "cxgb3: Check and handle the dma mapping errors"
        be2net: Clear any capability flags that driver is not interested in.
        openvswitch: Reset tunnel key between input and output.
        openvswitch: Use correct type while allocating flex array.
        openvswitch: Fix bad merge resolution.
        tun: compare with 0 instead of total_len
        rtnetlink: rtnl_bridge_getlink: Call nlmsg_find_attr() with ifinfomsg header
        ethernet/arc/arc_emac - fix NAPI "work > weight" warning
        ip_tunnel: Do not use inner ip-header-id for tunnel ip-header-id.
        bnx2x: prevent crash in shutdown flow with CNIC
        bnx2x: fix PTE write access error
        bnx2x: fix memory leak in VF
        ...
      ddea368c
    • Linus Torvalds's avatar
      Fix TLB gather virtual address range invalidation corner cases · 2b047252
      Linus Torvalds authored
      Ben Tebulin reported:
      
       "Since v3.7.2 on two independent machines a very specific Git
        repository fails in 9/10 cases on git-fsck due to an SHA1/memory
        failures.  This only occurs on a very specific repository and can be
        reproduced stably on two independent laptops.  Git mailing list ran
        out of ideas and for me this looks like some very exotic kernel issue"
      
      and bisected the failure to the backport of commit 53a59fc6 ("mm:
      limit mmu_gather batching to fix soft lockups on !CONFIG_PREEMPT").
      
      That commit itself is not actually buggy, but what it does is to make it
      much more likely to hit the partial TLB invalidation case, since it
      introduces a new case in tlb_next_batch() that previously only ever
      happened when running out of memory.
      
      The real bug is that the TLB gather virtual memory range setup is subtly
      buggered.  It was introduced in commit 597e1c35 ("mm/mmu_gather:
      enable tlb flush range in generic mmu_gather"), and the range handling
      was already fixed at least once in commit e6c495a9 ("mm: fix the TLB
      range flushed when __tlb_remove_page() runs out of slots"), but that fix
      was not complete.
      
      The problem with the TLB gather virtual address range is that it isn't
      set up by the initial tlb_gather_mmu() initialization (which didn't get
      the TLB range information), but it is set up ad-hoc later by the
      functions that actually flush the TLB.  And so any such case that forgot
      to update the TLB range entries would potentially miss TLB invalidates.
      
      Rather than try to figure out exactly which particular ad-hoc range
      setup was missing (I personally suspect it's the hugetlb case in
      zap_huge_pmd(), which didn't have the same logic as zap_pte_range()
      did), this patch just gets rid of the problem at the source: make the
      TLB range information available to tlb_gather_mmu(), and initialize it
      when initializing all the other tlb gather fields.
      
      This makes the patch larger, but conceptually much simpler.  And the end
      result is much more understandable; even if you want to play games with
      partial ranges when invalidating the TLB contents in chunks, now the
      range information is always there, and anybody who doesn't want to
      bother with it won't introduce subtle bugs.
      
      Ben verified that this fixes his problem.
      Reported-bisected-and-tested-by: default avatarBen Tebulin <tebulin@googlemail.com>
      Build-testing-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
      Build-testing-by: default avatarRichard Weinberger <richard.weinberger@gmail.com>
      Reviewed-by: default avatarMichal Hocko <mhocko@suse.cz>
      Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2b047252
    • Takashi Iwai's avatar
      ALSA: hda - Add a fixup for Gateway LT27 · 1801928e
      Takashi Iwai authored
      Gateway LT27 needs a fixup for the inverted digital mic.
      Reported-by: default avatar"Nathanael D. Noblet" <nathanael@gnat.ca>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      1801928e
  2. 15 Aug, 2013 17 commits
  3. 14 Aug, 2013 14 commits
    • Jesse Gross's avatar
      openvswitch: Reset tunnel key between input and output. · 36bf5cc6
      Jesse Gross authored
      It doesn't make sense to output a tunnel packet using the same
      parameters that it was received with since that will generally
      just result in the packet going back to us. As a result, userspace
      assumes that the tunnel key is cleared when transitioning through
      the switch. In the majority of cases this doesn't matter since a
      packet is either going to a tunnel port (in which the key is
      overwritten with new values) or to a non-tunnel port (in which
      case the key is ignored). However, it's theoreticaly possible that
      userspace could rely on the documented behavior, so this corrects
      it.
      Signed-off-by: default avatarJesse Gross <jesse@nicira.com>
      36bf5cc6
    • Pravin B Shelar's avatar
      openvswitch: Use correct type while allocating flex array. · 42415c90
      Pravin B Shelar authored
      Flex array is used to allocate hash buckets which is type struct
      hlist_head, but we use `struct hlist_head *` to calculate
      array size.  Since hlist_head is of size pointer it works fine.
      
      Following patch use correct type.
      Signed-off-by: default avatarPravin B Shelar <pshelar@nicira.com>
      Signed-off-by: default avatarJesse Gross <jesse@nicira.com>
      42415c90
    • Jesse Gross's avatar
      openvswitch: Fix bad merge resolution. · 30444e98
      Jesse Gross authored
      git silently included an extra hunk in vport_cmd_set() during
      automatic merging. This code is unreachable so it does not actually
      introduce a problem but it is clearly incorrect.
      Signed-off-by: default avatarJesse Gross <jesse@nicira.com>
      30444e98
    • Johan Hovold's avatar
      USB: keyspan: fix null-deref at disconnect and release · ff8a43c1
      Johan Hovold authored
      Make sure to fail properly if the device is not accepted during attach
      in order to avoid null-pointer derefs (of missing interface private
      data) at disconnect or release.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarJohan Hovold <jhovold@gmail.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      ff8a43c1
    • Johan Hovold's avatar
      USB: mos7720: fix broken control requests · ef6c8c1d
      Johan Hovold authored
      The parallel-port code of the drivers used a stack allocated
      control-request buffer for asynchronous (and possibly deferred) control
      requests. This not only violates the no-DMA-from-stack requirement but
      could also lead to corrupt control requests being submitted.
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarJohan Hovold <jhovold@gmail.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      ef6c8c1d
    • Oliver Neukum's avatar
      usb: add two quirky touchscreen · 304ab4ab
      Oliver Neukum authored
      These devices tend to become unresponsive after S3
      Signed-off-by: default avatarOliver Neukum <oneukum@suse.de>
      CC: stable@vger.kernel.org
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      304ab4ab
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew Morton) · f1d6e17f
      Linus Torvalds authored
      Merge a bunch of fixes from Andrew Morton.
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>:
        fs/proc/task_mmu.c: fix buffer overflow in add_page_map()
        arch: *: Kconfig: add "kernel/Kconfig.freezer" to "arch/*/Kconfig"
        ocfs2: fix null pointer dereference in ocfs2_dir_foreach_blk_id()
        x86 get_unmapped_area(): use proper mmap base for bottom-up direction
        ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page
        ocfs2: Revert 40bd62eb to avoid regression in extended allocation
        drivers/rtc/rtc-stmp3xxx.c: provide timeout for potentially endless loop polling a HW bit
        hugetlb: fix lockdep splat caused by pmd sharing
        aoe: adjust ref of head for compound page tails
        microblaze: fix clone syscall
        mm: save soft-dirty bits on file pages
        mm: save soft-dirty bits on swapped pages
        memcg: don't initialize kmem-cache destroying work for root caches
      f1d6e17f
    • Andreas Schwab's avatar
      m68k: Truncate base in do_div() · ea077b1b
      Andreas Schwab authored
      Explicitly truncate the second operand of do_div() to 32 bits to guard
      against bogus code calling it with a 64-bit divisor.
      
      [Thorsten]
      
      After upgrading from 3.2 to 3.10, mounting a btrfs volume fails with:
      
      btrfs: setting nodatacow, compression disabled
      btrfs: enabling auto recovery
      btrfs: disk space caching is enabled
      *** ZERO DIVIDE ***   FORMAT=2
      Current process id is 722
      BAD KERNEL TRAP: 00000000
      Modules linked in: evdev mac_hid ext4 crc16 jbd2 mbcache btrfs xor lzo_compress zlib_deflate raid6_pq crc32c libcrc32c
      PC: [<319535b2>] __btrfs_map_block+0x11c/0x119a [btrfs]
      SR: 2000  SP: 30c1fab4  a2: 30f0faf0
      d0: 00000000    d1: 00001000    d2: 00000000    d3: 00000000
      d4: 00010000    d5: 00000000    a0: 3085c72c    a1: 3085c72c
      Process mount (pid: 722, task=30f0faf0)
      Frame format=2 instr addr=319535ae
      Stack from 30c1faec:
              00000000 00000020 00000000 00001000 00000000 01401000 30253928 300ffc00
              00a843ac 3026f640 00000000 00010000 0009e250 00d106c0 00011220 00000000
              00001000 301c6830 0009e32a 000000ff 00000009 3085c72c 00000000 00000000
              30c1fd14 00000000 00000020 00000000 30c1fd14 0009e26c 00000020 00000003
              00000000 0009dd8a 300b0b6c 30253928 00a843ac 00001000 00000000 00000000
              0000a008 3194e76a 30253928 00a843ac 00001000 00000000 00000000 00000002
      Call Trace: [<00001000>] kernel_pg_dir+0x0/0x1000
      
          [...]
      
      Code: 222e ff74 2a2e ff5c 2c2e ff60 4c45 1402 <2d40> ff64 2d41 ff68 2205 4c2e 1800 ff68 4c04 0800 2041 d1c0 2206 4c2e 1400 ff68
      
      [Geert]
      
      As diagnosed by Andreas, fs/btrfs/volumes.c:__btrfs_map_block()
      calls
      
          do_div(stripe_nr, stripe_len);
      
      with stripe_len u64, while do_div() assumes the divisor is a 32-bit number.
      
      Due to the lack of truncation in the m68k-specific implementation of
      do_div(), the division is performed using the upper 32-bit word of
      stripe_len, which is zero.
      
      This was introduced by commit 53b381b3
      ("Btrfs: RAID5 and RAID6"), which changed the divisor from
      map->stripe_len (struct map_lookup.stripe_len is int) to a 64-bit temporary.
      Reported-by: default avatarThorsten Glaser <tg@debian.org>
      Signed-off-by: default avatarAndreas Schwab <schwab@linux-m68k.org>
      Tested-by: default avatarThorsten Glaser <tg@debian.org>
      Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
      Cc: stable@vger.kernel.org
      ea077b1b
    • Geert Uytterhoeven's avatar
      m68k/atari: ARAnyM - Fix NatFeat module support · e8184e10
      Geert Uytterhoeven authored
      As pointed out by Andreas Schwab, pointers passed to ARAnyM NatFeat calls
      should be physical addresses, not virtual addresses.
      
      Fortunately on Atari, physical and virtual kernel addresses are the same,
      as long as normal kernel memory is concerned, so this usually worked fine
      without conversion.
      
      But for modules, pointers to literal strings are located in vmalloc()ed
      memory. Depending on the version of ARAnyM, this causes the nf_get_id()
      call to just fail, or worse, crash ARAnyM itself with e.g.
      
          Gotcha! Illegal memory access. Atari PC = $968c
      
      This is a big issue for distro kernels, who want to have all drivers as
      loadable modules in an initrd.
      
      Add a wrapper for nf_get_id() that copies the literal to the stack to
      work around this issue.
      Reported-by: default avatarThorsten Glaser <tg@debian.org>
      Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
      Cc: stable@vger.kernel.org
      e8184e10
    • Weiping Pan's avatar
      tun: compare with 0 instead of total_len · d9bf5f13
      Weiping Pan authored
      Since we set "len = total_len" in the beginning of tun_get_user(),
      so we should compare the new len with 0, instead of total_len,
      or the if statement always returns false.
      Signed-off-by: default avatarWeiping Pan <wpan@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d9bf5f13
    • Asbjoern Sloth Toennesen's avatar
      rtnetlink: rtnl_bridge_getlink: Call nlmsg_find_attr() with ifinfomsg header · 3e805ad2
      Asbjoern Sloth Toennesen authored
      Fix the iproute2 command `bridge vlan show`, after switching from
      rtgenmsg to ifinfomsg.
      
      Let's start with a little history:
      
      Feb 20:   Vlad Yasevich got his VLAN-aware bridge patchset included in
                the 3.9 merge window.
                In the kernel commit 6cbdceeb, he added attribute support to
                bridge GETLINK requests sent with rtgenmsg.
      
      Mar 6th:  Vlad got this iproute2 reference implementation of the bridge
                vlan netlink interface accepted (iproute2 9eff0e5c)
      
      Apr 25th: iproute2 switched from using rtgenmsg to ifinfomsg (63338dca)
                http://patchwork.ozlabs.org/patch/239602/
                http://marc.info/?t=136680900700007
      
      Apr 28th: Linus released 3.9
      
      Apr 30th: Stephen released iproute2 3.9.0
      
      The `bridge vlan show` command haven't been working since the switch to
      ifinfomsg, or in a released version of iproute2. Since the kernel side
      only supports rtgenmsg, which iproute2 switched away from just prior to
      the iproute2 3.9.0 release.
      
      I haven't been able to find any documentation, about neither rtgenmsg
      nor ifinfomsg, and in which situation to use which, but kernel commit
      88c5b5ce seams to suggest that ifinfomsg should be used.
      
      Fixing this in kernel will break compatibility, but I doubt that anybody
      have been using it due to this bug in the user space reference
      implementation, at least not without noticing this bug. That said the
      functionality is still fully functional in 3.9, when reversing iproute2
      commit 63338dca.
      
      This could also be fixed in iproute2, but thats an ugly patch that would
      reintroduce rtgenmsg in iproute2, and from searching in netdev it seams
      like rtgenmsg usage is discouraged. I'm assuming that the only reason
      that Vlad implemented the kernel side to use rtgenmsg, was because
      iproute2 was using it at the time.
      Signed-off-by: default avatarAsbjoern Sloth Toennesen <ast@fiberby.net>
      Reviewed-by: default avatarVlad Yasevich <vyasevich@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3e805ad2
    • yonghua zheng's avatar
      fs/proc/task_mmu.c: fix buffer overflow in add_page_map() · 8c829622
      yonghua zheng authored
      Recently we met quite a lot of random kernel panic issues after enabling
      CONFIG_PROC_PAGE_MONITOR.  After debuggind we found this has something
      to do with following bug in pagemap:
      
      In struct pagemapread:
      
        struct pagemapread {
            int pos, len;
            pagemap_entry_t *buffer;
            bool v2;
        };
      
      pos is number of PM_ENTRY_BYTES in buffer, but len is the size of
      buffer, it is a mistake to compare pos and len in add_page_map() for
      checking buffer is full or not, and this can lead to buffer overflow and
      random kernel panic issue.
      
      Correct len to be total number of PM_ENTRY_BYTES in buffer.
      
      [akpm@linux-foundation.org: document pagemapread.pos and .len units, fix PM_ENTRY_BYTES definition]
      Signed-off-by: default avatarYonghua Zheng <younghua.zheng@gmail.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8c829622
    • Chen Gang's avatar
      arch: *: Kconfig: add "kernel/Kconfig.freezer" to "arch/*/Kconfig" · 57a1a197
      Chen Gang authored
      All architectures include "kernel/Kconfig.freezer" except three left, so
      let them include it too, or 'allmodconfig' will report error.
      
      The related errors: (with allmodconfig for openrisc):
      
          CC      kernel/cgroup_freezer.o
        kernel/cgroup_freezer.c: In function 'freezer_css_online':
        kernel/cgroup_freezer.c:133:15: error: 'system_freezing_cnt' undeclared (first use in this function)
        kernel/cgroup_freezer.c:133:15: note: each undeclared identifier is reported only once for each function it appears in
        kernel/cgroup_freezer.c: In function 'freezer_css_offline':
        kernel/cgroup_freezer.c:157:15: error: 'system_freezing_cnt' undeclared (first use in this function)
        kernel/cgroup_freezer.c: In function 'freezer_attach':
        kernel/cgroup_freezer.c:200:4: error: implicit declaration of function 'freeze_task'
        kernel/cgroup_freezer.c: In function 'freezer_apply_state':
        kernel/cgroup_freezer.c:371:16: error: 'system_freezing_cnt' undeclared (first use in this function)
      Signed-off-by: default avatarChen Gang <gang.chen@asianux.com>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Chen Liqin <liqin.chen@sunplusct.com>
      Cc: Lennox Wu <lennox.wu@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      57a1a197
    • Jeff Liu's avatar
      ocfs2: fix null pointer dereference in ocfs2_dir_foreach_blk_id() · d6394b59
      Jeff Liu authored
      Fix a NULL pointer deference while removing an empty directory, which
      was introduced by commit 3704412b ("[readdir] convert ocfs2").
      
        BUG: unable to handle kernel NULL pointer dereference at (null)
        IP: [<(null)>]           (null)
        PGD 6da85067 PUD 6da89067 PMD 0
        Oops: 0010 [#1] SMP
        CPU: 0 PID: 6564 Comm: rmdir Tainted: G           O 3.11.0-rc1 #4
        RIP: 0010:[<0000000000000000>]  [<          (null)>]           (null)
        Call Trace:
          ocfs2_dir_foreach+0x49/0x50 [ocfs2]
          ocfs2_empty_dir+0x12c/0x3e0 [ocfs2]
          ocfs2_unlink+0x56e/0xc10 [ocfs2]
          vfs_rmdir+0xd5/0x140
          do_rmdir+0x1cb/0x1e0
          SyS_rmdir+0x16/0x20
          system_call_fastpath+0x16/0x1b
        Code:  Bad RIP value.
        RIP  [<          (null)>]           (null)
        RSP <ffff88006daddc10>
        CR2: 0000000000000000
      
      [dan.carpenter@oracle.com: fix pointer math]
      Signed-off-by: default avatarJie Liu <jeff.liu@oracle.com>
      Reported-by: default avatarDavid Weber <wb@munzinger.de>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Joel Becker <jlbec@evilplan.org>
      Cc: Mark Fasheh <mfasheh@suse.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d6394b59