1. 13 Feb, 2008 17 commits
    • Pavel Emelyanov's avatar
      [NETLABEL]: Don't produce unused variables when IPv6 is off. · 56628b1d
      Pavel Emelyanov authored
      Some code declares variables on the stack, but uses them
      under #ifdef CONFIG_IPV6, so thay become unused when ipv6
      is off. Fortunately, they are used in a switch's case
      branches, so the fix is rather simple.
      
      Is it OK from coding style POV to add braces inside "cases",
      or should I better avoid such style and rework the patch?
      Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      56628b1d
    • Pavel Emelyanov's avatar
      [NETLABEL]: Compilation for CONFIG_AUDIT=n case. · 94de7feb
      Pavel Emelyanov authored
      The audit_log_start() will expand into an empty do { } while (0)
      construction and the audit_ctx becomes unused.
      
      The solution: push current->audit_context into audit_log_start()
      directly, since it is not required in any other place in the 
      calling function.
      Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      94de7feb
    • Pavel Emelyanov's avatar
      [GENETLINK]: Relax dances with genl_lock. · 910d6c32
      Pavel Emelyanov authored
      The genl_unregister_family() calls the genl_unregister_mc_groups(), 
      which takes and releases the genl_lock and then locks and releases
      this lock itself.
      
      Relax this behavior, all the more so the genl_unregister_mc_groups() 
      is called from genl_unregister_family() only.
      Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      910d6c32
    • Pavel Emelyanov's avatar
      [NETLABEL]: Fix lookup logic of netlbl_domhsh_search_def. · 4c3a0a25
      Pavel Emelyanov authored
      Currently, if the call to netlbl_domhsh_search succeeds the
      return result will still be NULL.
      
      Fix that, by returning the found entry (if any).
      Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
      Acked-by: default avatarPaul Moore <paul.moore@hp.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4c3a0a25
    • Rami Rosen's avatar
      [IPV6]: remove unused method declaration (net/ndisc.h). · 0f8f27c3
      Rami Rosen authored
      This patch removes unused declaration of dflt_rt_lookup() method in
      include/net/ndisc.h
      Signed-off-by: default avatarRami Rosen <ramirose@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0f8f27c3
    • Urs Thuermann's avatar
      [NET]: Fix comment for skb_pull_rcsum · fee54fa5
      Urs Thuermann authored
      Fix comment for skb_pull_rcsum
      Signed-off-by: default avatarUrs Thuermann <urs@isnogud.escape.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fee54fa5
    • Herbert Xu's avatar
      [IPV6]: Fix IPsec datagram fragmentation · 28a89453
      Herbert Xu authored
      This is a long-standing bug in the IPsec IPv6 code that breaks
      when we emit a IPsec tunnel-mode datagram packet.  The problem
      is that the code the emits the packet assumes the IPv6 stack
      will fragment it later, but the IPv6 stack assumes that whoever
      is emitting the packet is going to pre-fragment the packet.
      
      In the long term we need to fix both sides, e.g., to get the
      datagram code to pre-fragment as well as to get the IPv6 stack
      to fragment locally generated tunnel-mode packet.
      
      For now this patch does the second part which should make it
      work for the IPsec host case.
      Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      28a89453
    • David S. Miller's avatar
      [NDISC]: Fix race in generic address resolution · 69cc64d8
      David S. Miller authored
      Frank Blaschka provided the bug report and the initial suggested fix
      for this bug.  He also validated this version of this fix.
      
      The problem is that the access to neigh->arp_queue is inconsistent, we
      grab references when dropping the lock lock to call
      neigh->ops->solicit() but this does not prevent other threads of
      control from trying to send out that packet at the same time causing
      corruptions because both code paths believe they have exclusive access
      to the skb.
      
      The best option seems to be to hold the write lock on neigh->lock
      during the ->solicit() call.  I looked at all of the ndisc_ops
      implementations and this seems workable.  The only case that needs
      special care is the IPV4 ARP implementation of arp_solicit().  It
      wants to take neigh->lock as a reader to protect the header entry in
      neigh->ha during the emission of the soliciation.  We can simply
      remove the read lock calls to take care of that since holding the lock
      as a writer at the caller providers a superset of the protection
      afforded by the existing read locking.
      
      The rest of the ->solicit() implementations don't care whether the
      neigh is locked or not.
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      69cc64d8
    • David Newall's avatar
      hci_ldisc: fix null pointer deref · 3611f4d2
      David Newall authored
      Arjan:
      
        With the help of kerneloops.org I've spotted a nice little interaction
        between the TTY layer and the bluetooth code, however the tty layer is not
        something I'm all too familiar with so I rather ask than brute-force fix the
        code incorrectly.
      
        The raw details are at:
        http://www.kerneloops.org/search.php?search=uart_flush_buffer
      
        What happens is that, on closing the bluetooth tty, the tty layer goes
        into the release_dev() function, which first does a bunch of stuff, then
        sets the file->private_data to NULL, does some more stuff and then calls the
        ldisc close function.  Which in this case, is hci_uart_tty_close().
      
        Now, hci_uart_tty_close() calls hci_uart_close() which clears some
        internal bit, and then calls hci_uart_flush()...  which calls back to the
        tty layers' uart_flush_buffer() function.  (in drivers/bluetooth/hci_tty.c
        around line 194) Which then WARN_ON()'s because that's not allowed/supposed
        to be called this late in the shutdown of the port....
      
        Should the bluetooth driver even call this flush function at all??
      
      David:
      
        This seems to be what happens: Hci_uart_close() flushes using
        hci_uart_flush().  Subsequently, in hci_dev_do_close(), (one step in
        hci_unregister_dev()), hci_uart_flush() is called again.  The comment in
        uart_flush_buffer(), relating to the WARN_ON(), indicates you can't flush
        after the port is closed; which sounds reasonable.  I think hci_uart_close()
        should set hdev->flush to NULL before returning.  Hci_dev_do_close() does
        check for this.  The code path is rather involved and I'm not entirely clear
        of all steps, but I think that's what should be done.
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3611f4d2
    • Jarek Poplawski's avatar
      [AX25] ax25_ds_timer: use mod_timer instead of add_timer · e848b583
      Jarek Poplawski authored
      This patch changes current use of: init_timer(), add_timer()
      and del_timer() to setup_timer() with mod_timer(), which
      should be safer anyway.
      Reported-by: default avatarJann Traschewski <jann@gmx.de>
      Signed-off-by: default avatarJarek Poplawski <jarkao2@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e848b583
    • Jarek Poplawski's avatar
      [AX25] ax25_timer: use mod_timer instead of add_timer · 21fab4a8
      Jarek Poplawski authored
      According to one of Jann's OOPS reports it looks like
      BUG_ON(timer_pending(timer)) triggers during add_timer()
      in ax25_start_t1timer(). This patch changes current use
      of: init_timer(), add_timer() and del_timer() to
      setup_timer() with mod_timer(), which should be safer
      anyway.
      Reported-by: default avatarJann Traschewski <jann@gmx.de>
      Signed-off-by: default avatarJarek Poplawski <jarkao2@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      21fab4a8
    • Jarek Poplawski's avatar
      [AX25] ax25_route: make ax25_route_lock BH safe · 4de211f1
      Jarek Poplawski authored
      > =================================
      > [ INFO: inconsistent lock state ]
      > 2.6.24-dg8ngn-p02 #1
      > ---------------------------------
      > inconsistent {softirq-on-W} -> {in-softirq-R} usage.
      > linuxnet/3046 [HC0[0]:SC1[2]:HE1:SE0] takes:
      >  (ax25_route_lock){--.+}, at: [<f8a0cfb7>] ax25_get_route+0x18/0xb7 [ax25]
      > {softirq-on-W} state was registered at:
      ...
      
      This lockdep report shows that ax25_route_lock is taken for reading in
      softirq context, and for writing in process context with BHs enabled.
      So, to make this safe, all write_locks in ax25_route.c are changed to
      _bh versions.
      
      Reported-by: Jann Traschewski <jann@gmx.de>,
      Signed-off-by: default avatarJarek Poplawski <jarkao2@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4de211f1
    • Jarek Poplawski's avatar
      [AX25] af_ax25: remove sock lock in ax25_info_show() · 1105b5d1
      Jarek Poplawski authored
      This lockdep warning:
      
      > =======================================================
      > [ INFO: possible circular locking dependency detected ]
      > 2.6.24 #3
      > -------------------------------------------------------
      > swapper/0 is trying to acquire lock:
      >  (ax25_list_lock){-+..}, at: [<f91dd3b1>] ax25_destroy_socket+0x171/0x1f0 [ax25]
      >
      > but task is already holding lock:
      >  (slock-AF_AX25){-+..}, at: [<f91dbabc>] ax25_std_heartbeat_expiry+0x1c/0xe0 [ax25]
      >
      > which lock already depends on the new lock.
      ...
      
      shows that ax25_list_lock and slock-AF_AX25 are taken in different
      order: ax25_info_show() takes slock (bh_lock_sock(ax25->sk)) while
      ax25_list_lock is held, so reversely to other functions. To fix this
      the sock lock should be moved to ax25_info_start(), and there would
      be still problem with breaking ax25_list_lock (it seems this "proper"
      order isn't optimal yet). But, since it's only for reading proc info
      it seems this is not necessary (e.g.  ax25_send_to_raw() does similar
      reading without this lock too).
      
      So, this patch removes sock lock to avoid deadlock possibility; there
      is also used sock_i_ino() function, which reads sk_socket under proper
      read lock. Additionally printf format of this i_ino is changed to %lu.
      Reported-by: default avatarBernard Pidoux F6BVP <f6bvp@free.fr>
      Signed-off-by: default avatarJarek Poplawski <jarkao2@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1105b5d1
    • Stephen Hemminger's avatar
      fib_trie: /proc/net/route performance improvement · 8315f5d8
      Stephen Hemminger authored
      Use key/offset caching to change /proc/net/route (use by iputils route)
      from O(n^2) to O(n). This improves performance from 30sec with 160,000
      routes to 1sec.
      Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8315f5d8
    • Stephen Hemminger's avatar
      fib_trie: handle empty tree · ec28cf73
      Stephen Hemminger authored
      This fixes possible problems when trie_firstleaf() returns NULL
      to trie_leafindex().
      Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ec28cf73
    • David S. Miller's avatar
      [IPV4]: Remove IP_TOS setting privilege checks. · e4f8b5d4
      David S. Miller authored
      Various RFCs have all sorts of things to say about the CS field of the
      DSCP value.  In particular they try to make the distinction between
      values that should be used by "user applications" and things like
      routing daemons.
      
      This seems to have influenced the CAP_NET_ADMIN check which exists for
      IP_TOS socket option settings, but in fact it has an off-by-one error
      so it wasn't allowing CS5 which is meant for "user applications" as
      well.
      
      Further adding to the inconsistency and brokenness here, IPV6 does not
      validate the DSCP values specified for the IPV6_TCLASS socket option.
      
      The real actual uses of these TOS values are system specific in the
      final analysis, and these RFC recommendations are just that, "a
      recommendation".  In fact the standards very purposefully use
      "SHOULD" and "SHOULD NOT" when describing how these values can be
      used.
      
      In the final analysis the only clean way to provide consistency here
      is to remove the CAP_NET_ADMIN check.  The alternatives just don't
      work out:
      
      1) If we add the CAP_NET_ADMIN check to ipv6, this can break existing
         setups.
      
      2) If we just fix the off-by-one error in the class comparison in
         IPV4, certain DSCP values can be used in IPV6 but not IPV4 by
         default.  So people will just ask for a sysctl asking to
         override that.
      
      I checked several other freely available kernel trees and they
      do not make any privilege checks in this area like we do.  For
      the BSD stacks, this goes back all the way to Stevens Volume 2
      and beyond.
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e4f8b5d4
    • David S. Miller's avatar
  2. 12 Feb, 2008 9 commits
    • Linus Torvalds's avatar
      WMI: initialize wmi_blocks.list even if ACPI is disabled · 96b5a46e
      Linus Torvalds authored
      Even if we don't want to register the WMI driver, we should initialize
      the wmi_blocks list to be empty, since we don't want the wmi helper
      functions to oops just because that basic list has not even been set up.
      
      With this, "find_guid()" will happily return "not found" rather than
      oopsing all over the place, and the callers will then just automatically
      return false or AE_NOT_FOUND as appropriate.
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      96b5a46e
    • Roland McGrath's avatar
      x86: vdso_install fix · 2c158269
      Roland McGrath authored
      The makefile magic for installing the 32-bit vdso images on disk had a
      little error.  A single-line change would fix that bug, but this does a
      little more to reduce the error-prone duplication of this bit of
      makefile variable magic.
      Signed-off-by: default avatarRoland McGrath <roland@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2c158269
    • KOSAKI Motohiro's avatar
      mempolicy: silently restrict nodemask to allowed nodes · 31f1de46
      KOSAKI Motohiro authored
      Kosaki Motohito noted that "numactl --interleave=all ..." failed in the
      presence of memoryless nodes.  This patch attempts to fix that problem.
      
      Some background:
      
      numactl --interleave=all calls set_mempolicy(2) with a fully populated
      [out to MAXNUMNODES] nodemask.  set_mempolicy() [in do_set_mempolicy()]
      calls contextualize_policy() which requires that the nodemask be a
      subset of the current task's mems_allowed; else EINVAL will be returned.
      
      A task's mems_allowed will always be a subset of node_states[N_HIGH_MEMORY]
      i.e., nodes with memory.  So, a fully populated nodemask will be
      declared invalid if it includes memoryless nodes.
      
        NOTE:  the same thing will occur when running in a cpuset
               with restricted mem_allowed--for the same reason:
               node mask contains dis-allowed nodes.
      
      mbind(2), on the other hand, just masks off any nodes in the nodemask
      that are not included in the caller's mems_allowed.
      
      In each case [mbind() and set_mempolicy()], mpol_check_policy() will
      complain [again, resulting in EINVAL] if the nodemask contains any
      memoryless nodes.  This is somewhat redundant as mpol_new() will remove
      memoryless nodes for interleave policy, as will bind_zonelist()--called
      by mpol_new() for BIND policy.
      
      Proposed fix:
      
      1) modify contextualize_policy logic to:
         a) remember whether the incoming node mask is empty.
         b) if not, restrict the nodemask to allowed nodes, as is
            currently done in-line for mbind().  This guarantees
            that the resulting mask includes only nodes with memory.
      
            NOTE:  this is a [benign, IMO] change in behavior for
                   set_mempolicy().  Dis-allowed nodes will be
                   silently ignored, rather than returning an error.
      
         c) fold this code into mpol_check_policy(), replace 2 calls to
            contextualize_policy() to call mpol_check_policy() directly
            and remove contextualize_policy().
      
      2) In existing mpol_check_policy() logic, after "contextualization":
         a) MPOL_DEFAULT:  require that in coming mask "was_empty"
         b) MPOL_{BIND|INTERLEAVE}:  require that contextualized nodemask
            contains at least one node.
         c) add a case for MPOL_PREFERRED:  if in coming was not empty
            and resulting mask IS empty, user specified invalid nodes.
            Return EINVAL.
         c) remove the now redundant check for memoryless nodes
      
      3) remove the now redundant masking of policy nodes for interleave
         policy from mpol_new().
      
      4) Now that mpol_check_policy() contextualizes the nodemask, remove
         the in-line nodes_and() from sys_mbind().  I believe that this
         restores mbind() to the behavior before the memoryless-nodes
         patch series.  E.g., we'll no longer treat an invalid nodemask
         with MPOL_PREFERRED as local allocation.
      
      [ Patch history:
      
        v1 -> v2:
         - Communicate whether or not incoming node mask was empty to
           mpol_check_policy() for better error checking.
         - As suggested by David Rientjes, remove the now unused
           cpuset_nodes_subset_current_mems_allowed() from cpuset.h
      
        v2 -> v3:
         - As suggested by Kosaki Motohito, fold the "contextualization"
           of policy nodemask into mpol_check_policy().  Looks a little
           cleaner. ]
      Signed-off-by: default avatarLee Schermerhorn <lee.schermerhorn@hp.com>
      Signed-off-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
      Tested-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
      Acked-by: default avatarDavid Rientjes <rientjes@google.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      31f1de46
    • Linus Torvalds's avatar
    • Jonathan Corbet's avatar
      Be more robust about bad arguments in get_user_pages() · 900cf086
      Jonathan Corbet authored
      So I spent a while pounding my head against my monitor trying to figure
      out the vmsplice() vulnerability - how could a failure to check for
      *read* access turn into a root exploit? It turns out that it's a buffer
      overflow problem which is made easy by the way get_user_pages() is
      coded.
      
      In particular, "len" is a signed int, and it is only checked at the
      *end* of a do {} while() loop.  So, if it is passed in as zero, the loop
      will execute once and decrement len to -1.  At that point, the loop will
      proceed until the next invalid address is found; in the process, it will
      likely overflow the pages array passed in to get_user_pages().
      
      I think that, if get_user_pages() has been asked to grab zero pages,
      that's what it should do.  Thus this patch; it is, among other things,
      enough to block the (already fixed) root exploit and any others which
      might be lurking in similar code.  I also think that the number of pages
      should be unsigned, but changing the prototype of this function probably
      requires some more careful review.
      Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      900cf086
    • Linus Torvalds's avatar
    • Pekka Enberg's avatar
      Add Matt to MAINTAINERS as a SLAB allocator maintainer · c76d118e
      Pekka Enberg authored
      Matt is already the maintainer of SLOB which is one of the "SLAB" allocators in
      the kernel so add him to MAINTAINERS.
      Signed-off-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      c76d118e
    • Linus Torvalds's avatar
      Merge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev · a17b7a39
      Linus Torvalds authored
      * 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
        sata_mv: platform driver allocs dma without create
        pata_ninja32: setup changes
        pata_legacy: typo fix
        pata_amd: Note in the module description it handles Nvidia
        sata_mv: fix loop with last port
        libata: ignore deverr on SETXFER if mode is configured
        pata_via: fix SATA cable detection on cx700
      a17b7a39
    • Andi Kleen's avatar
      Make topology fallback macros reference their arguments. · 271cad6d
      Andi Kleen authored
      This avoids warnings with unreferenced variables in the !NUMA case.
      Signed-off-by: default avatarAndi Kleen <ak@suse.de>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      271cad6d
  3. 11 Feb, 2008 14 commits
    • Olof Johansson's avatar
      mlx4_core: Fix build break (missing include) · 29c27112
      Olof Johansson authored
      Commit 313abe55 ("mlx4_core: For 64-bit systems, vmap() kernel queue
      buffers") caused this to pop up on powerpc allyesconfig, looks like a
      missing include file:
      
          drivers/net/mlx4/alloc.c: In function 'mlx4_buf_alloc':
          drivers/net/mlx4/alloc.c:162: error: implicit declaration of function 'vmap'
          drivers/net/mlx4/alloc.c:162: error: 'VM_MAP' undeclared (first use in this function)
          drivers/net/mlx4/alloc.c:162: error: (Each undeclared identifier is reported only once
          drivers/net/mlx4/alloc.c:162: error: for each function it appears in.)
          drivers/net/mlx4/alloc.c:162: warning: assignment makes pointer from integer without a cast
          drivers/net/mlx4/alloc.c: In function 'mlx4_buf_free':
          drivers/net/mlx4/alloc.c:187: error: implicit declaration of function 'vunmap'
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
      29c27112
    • Tony Luck's avatar
      [IA64] Fix build for sim_defconfig · 10d0aa3c
      Tony Luck authored
      Commit bdc80787 broke the build
      for this config because the sim_defconfig selects CONFIG_HZ=250
      but include/asm-ia64/param.h has an ifdef for the simulator to
      force HZ to 32.  So we ended up with a kernel/timeconst.h set
      for HZ=250 ... which then failed the check for the right HZ
      value and died with:
      
      Drop the #ifdef magic from param.h and make force CONFIG_HZ=32
      directly for the simulator.
      Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
      10d0aa3c
    • Byron Bradley's avatar
      sata_mv: platform driver allocs dma without create · fbf14e2f
      Byron Bradley authored
      When the sata_mv driver is used as a platform driver,
      mv_create_dma_pools() is never called so it fails when trying
      to alloc in mv_pool_start().
      Signed-off-by: default avatarByron Bradley <byron.bbradley@gmail.com>
      Acked-by: default avatarMark Lord <mlord@pobox.com>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      fbf14e2f
    • Alan Cox's avatar
      pata_ninja32: setup changes · 41946450
      Alan Cox authored
      Forcibly set more of the configuration at init time. This seems to fix at
      least one problem reported. We don't know what most of these bits do, but
      we do know what windows stuffs there.
      Signed-off-by: default avatarAlan Cox <alan@redhat.com>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      41946450
    • Alan Cox's avatar
      pata_legacy: typo fix · 8397248d
      Alan Cox authored
      Signed-off-by: default avatarAlan Cox <alan@redhat.com>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      8397248d
    • Alan Cox's avatar
      pata_amd: Note in the module description it handles Nvidia · c9544bcb
      Alan Cox authored
      This has confused a few people so fix it
      Signed-off-by: default avatarAlan Cox <alan@redhat.com>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      c9544bcb
    • Yinghai Lu's avatar
      sata_mv: fix loop with last port · 8f71efe2
      Yinghai Lu authored
      commit f351b2d6
              sata_mv: Support SoC controllers
      
      cause panic:
      
      scsi 4:0:0:0: Direct-Access     ATA      HITACHI HDS7225S V44O PQ: 0 ANSI: 5
      sd 4:0:0:0: [sde] 488390625 512-byte hardware sectors (250056 MB)
      sd 4:0:0:0: [sde] Write Protect is off
      sd 4:0:0:0: [sde] Mode Sense: 00 3a 00 00
      sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
      sd 4:0:0:0: [sde] 488390625 512-byte hardware sectors (250056 MB)
      sd 4:0:0:0: [sde] Write Protect is off
      sd 4:0:0:0: [sde] Mode Sense: 00 3a 00 00
      sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
       sde:<1>BUG: unable to handle kernel NULL pointer dereference at 000000000000001a
      IP: [<ffffffff806262c7>] mv_interrupt+0x21c/0x4cc
      PGD 0
      Oops: 0000 [1] SMP
      CPU 3
      Modules linked in:
      Pid: 0, comm: swapper Not tainted 2.6.24-smp-08636-g0afc2edf-dirty #26
      RIP: 0010:[<ffffffff806262c7>]  [<ffffffff806262c7>] mv_interrupt+0x21c/0x4cc
      RSP: 0000:ffff8102050bbec8  EFLAGS: 00010297
      RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000003
      RDX: 0000000000008000 RSI: 0000000000000286 RDI: ffff8102035180e0
      RBP: 0000000000000001 R08: 0000000000000003 R09: ffff8102036613e0
      R10: 0000000000000002 R11: ffffffff8061474c R12: ffff8102035bf828
      R13: 0000000000000008 R14: ffff81020348ece8 R15: ffffc20002cb2000
      FS:  0000000000000000(0000) GS:ffff810405025700(0000) knlGS:0000000000000000
      CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
      CR2: 000000000000001a CR3: 0000000000201000 CR4: 00000000000006e0
      DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
      Process swapper (pid: 0, threadinfo ffff810405094000, task ffff8102050b28c0)
      Stack:  000000010000000c 0002040000220400 0000001100000002 ffff81020348eda8
       0000000000000001 ffff8102035f2cc0 0000000000000000 0000000000000000
       0000000000000018 0000000000000000 0000000000000000 ffffffff80269ee8
      Call Trace:
       <IRQ>  [<ffffffff80269ee8>] ? handle_IRQ_event+0x25/0x53
       [<ffffffff8026b393>] ? handle_fasteoi_irq+0x90/0xc8
       [<ffffffff802218e2>] ? do_IRQ+0xf1/0x15f
       [<ffffffff8021df24>] ? default_idle+0x0/0x55
       [<ffffffff8021f361>] ? ret_from_intr+0x0/0xa
       <EOI>  [<ffffffff8023010c>] ? lapic_next_event+0x0/0xa
       [<ffffffff8021df55>] ? default_idle+0x31/0x55
       [<ffffffff8021df50>] ? default_idle+0x2c/0x55
       [<ffffffff8021df24>] ? default_idle+0x0/0x55
       [<ffffffff8021e00b>] ? cpu_idle+0x92/0xb8
      
      Code: 41 14 85 c0 89 44 24 14 0f 84 9d 02 00 00 f7 d0 01 d6 41 89 d5 89 41 14 8b 41 14 89 34 24 e9 7e 02 00 00 49 63 c5 49 8b 5c c6 48 <f6> 43 1a 80 4c 8b a3 20 37 00 00 0f 85 62 02 00 00 31 c9 41 83
      RIP  [<ffffffff806262c7>] mv_interrupt+0x21c/0x4cc
       RSP <ffff8102050bbec8>
      CR2: 000000000000001a
      ---[ end trace 2583b5f7a5350584 ]---
      Kernel panic - not syncing: Aiee, killing interrupt handler!
      
      last_port already include port0 base.
      this patch change use last_port directly, and move pp assignment later.
      Signed-off-by: default avatarYinghai Lu <yinghai.lu@sun.com>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      8f71efe2
    • Tejun Heo's avatar
      libata: ignore deverr on SETXFER if mode is configured · 4055dee7
      Tejun Heo authored
      Some controllers (VIA CX700) raise device error on SETXFER even after
      mode configuration succeeded.  Update ata_dev_set_mode() such that
      device error is ignored if transfer mode is configured correctly.  To
      implement this, device is revalidated even after device error on
      SETXFER.
      
      This fixes kernel bugzilla bug 8563.
      Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
      Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      4055dee7
    • Tejun Heo's avatar
      pata_via: fix SATA cable detection on cx700 · 7585eb1b
      Tejun Heo authored
      The first port of cx700 is SATA.  Fix cable detection.
      Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
      Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
      7585eb1b
    • Thomas Gleixner's avatar
      x86: remove over noisy debug printk · 81772fea
      Thomas Gleixner authored
      pageattr-test.c contains a noisy debug printk that people reported.
      The condition under which it prints (randomly tapping into a mem_map[]
      hole and not being able to c_p_a() there) is valid behavior and not
      interesting to report.
      
      Remove it.
      Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Acked-by: default avatarIngo Molnar <mingo@elte.hu>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      81772fea
    • Linus Torvalds's avatar
    • Linus Torvalds's avatar
    • Andi Kleen's avatar
      Prevent IDE boot ops on NUMA system · 1f07e988
      Andi Kleen authored
      Without this patch a Opteron test system here oopses at boot with
      current git.
      
      Calling to_pci_dev() on a NULL pointer gives a negative value so the
      following NULL pointer check never triggers and then an illegal address
      is referenced.  Check the unadjusted original device pointer for NULL
      instead.
      Signed-off-by: default avatarAndi Kleen <ak@suse.de>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      1f07e988
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://linux-nfs.org/~bfields/linux · 0c0d61ca
      Linus Torvalds authored
      * 'for-linus' of git://linux-nfs.org/~bfields/linux:
        SUNPRC: Fix printk format warning
        nfsd: clean up svc_reserve_auth()
        NLM: don't requeue block if it was invalidated while GRANT_MSG was in flight
        NLM: don't reattempt GRANT_MSG when there is already an RPC in flight
        NLM: have server-side RPC clients default to soft RPC tasks
        NLM: set RPC_CLNT_CREATE_NOPING for NLM RPC clients
      0c0d61ca