GitHub/exynos8895/android_kernel_samsung_universal8895.git
11 years agomd: md_stop_writes() should always freeze recovery.
NeilBrown [Wed, 8 May 2013 23:48:30 +0000 (09:48 +1000)]
md: md_stop_writes() should always freeze recovery.

__md_stop_writes() will currently sometimes freeze recovery.
So any caller must be ready for that to happen, and indeed they are.

However if __md_stop_writes() doesn't freeze_recovery, then
a recovery could start before mddev_suspend() is called, which
could be awkward.  This can particularly cause problems or dm-raid.

So change __md_stop_writes() to always freeze recovery.  This is safe
and more predicatable.

Reported-by: Brassow Jonathan <jbrassow@redhat.com>
Tested-by: Brassow Jonathan <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agoMD: ignore discard request for hard disks of hybid raid1/raid10 array
Shaohua Li [Sun, 28 Apr 2013 10:26:38 +0000 (18:26 +0800)]
MD: ignore discard request for hard disks of hybid raid1/raid10 array

In SSD/hard disk hybid storage, discard request should be ignored for hard
disk. We used to be doing this way, but the unplug path forgets it.

This is suitable for stable tree since v3.6.

Cc: stable@vger.kernel.org
Reported-and-tested-by: Markus <M4rkusXXL@web.de>
Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd: bad block list should default to disabled.
NeilBrown [Wed, 24 Apr 2013 01:42:44 +0000 (11:42 +1000)]
md: bad block list should default to disabled.

Maintenance of a bad-block-list currently defaults to 'enabled'
and is then disabled when it cannot be supported.
This is backwards and causes problem for dm-raid which didn't know
to disable it.

So fix the defaults, and only enabled for v1.x metadata which
explicitly has bad blocks enabled.

The problem with dm-raid has been present since badblock support was
added in v3.1, so this patch is suitable for any -stable from 3.1
onwards.

Cc: stable@vger.kernel.org (3.1+)
Reported-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd: raid1/raid10 md devices leak memory when stopping
Hirokazu Takahashi [Wed, 24 Apr 2013 01:42:44 +0000 (11:42 +1000)]
md: raid1/raid10 md devices leak memory when stopping

Hi.

Raid1 and raid10 devices leak memory every time they stop.
This is a patch for linux-3.9.0-rc7 to fix this problem.

Thanks,
Hirokazu Takahashi.

Signed-off-by: Hirokazu Takahashi <taka@valinux.co.jp>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agoDM RAID: Add message/status support for changing sync action
Jonathan Brassow [Wed, 24 Apr 2013 01:42:43 +0000 (11:42 +1000)]
DM RAID: Add message/status support for changing sync action

DM RAID:  Add message/status support for changing sync action

This patch adds a message interface to dm-raid to allow the user to more
finely control the sync actions being performed by the MD driver.  This
gives the user the ability to initiate "check" and "repair" (i.e. scrubbing).
Two additional fields have been appended to the status output to provide more
information about the type of sync action occurring and the results of those
actions, specifically: <sync_action> and <mismatch_cnt>.  These new fields
will always be populated.  This is essentially the device-mapper way of doing
what MD controls through the 'sync_action' sysfs file and shows through the
'mismatch_cnt' sysfs file.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agoMD: Export 'md_reap_sync_thread' function
Jonathan Brassow [Wed, 24 Apr 2013 01:42:43 +0000 (11:42 +1000)]
MD: Export 'md_reap_sync_thread' function

MD: Export 'md_reap_sync_thread' function

Make 'md_reap_sync_thread' available to other files, specifically dm-raid.c.
- rename reap_sync_thread to md_reap_sync_thread
- move the fn after md_check_recovery to match md.h declaration placement
- export md_reap_sync_thread

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd: don't update metadata when stopping a read-only array.
NeilBrown [Wed, 24 Apr 2013 01:42:42 +0000 (11:42 +1000)]
md: don't update metadata when stopping a read-only array.

read-only arrays should stay that way as much as possible.
Updating the metadata - which could be triggered by a re-add
while assembling the array metadata - should be avoided.

Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd: Allow devices to be re-added to a read-only array.
NeilBrown [Wed, 24 Apr 2013 01:42:42 +0000 (11:42 +1000)]
md: Allow devices to be re-added to a read-only array.

When assembling an array incrementally we might want to make
it device available when "enough" devices are present, but maybe
not "all" devices are present.
If the remaining devices appear before the array is actually used,
they should be added transparently.

We do this by using the "read-auto" mode where the array acts like
it is read-only until a write request arrives.

Current an add-device request switches a read-auto array to active.
This means that only one device can be added after the array is first
made read-auto.  This isn't a problem for RAID5, but is not ideal for
RAID6 or RAID10.
Also we don't really want to switch the array to read-auto at all
when re-adding a device as this doesn't really imply any change.

So:
 - remove the "md_update_sb()" call from add_new_disk().  This isn't
   really needed as just adding a disk doesn't require a metadata
   update.  Instead, just set MD_CHANGE_DEVS.  This will effect a
   metadata update soon enough, once the array is not read-only.

 - Allow the ADD_NEW_DISK ioctl to succeed without activating a
   read-auto array, providing the MD_DISK_SYNC flag is set.
   In this case, the device will be rejected if it cannot be added
   with the correct device number, or has an incorrect event count.

 - Teach remove_and_add_spares() to be careful about adding spares
   when the array is read-only (or read-mostly) - only add devices
   that are thought to be in-sync, and only do it if the array is
   in-sync itself.

 - In md_check_recovery, use remove_and_add_spares in the read-only
   case, rather than open coding just the 'remove' part of it.

Reported-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd/raid10: Allow skipping recovery when clean arrays are assembled
Martin Wilck [Wed, 24 Apr 2013 01:42:42 +0000 (11:42 +1000)]
md/raid10: Allow skipping recovery when clean arrays are assembled

When an array is assembled incrementally with mdadm -I -R
and the array switches to "active" mode, md starts a recovery.

If the array was clean, the "fullsync" flag will be 0. Skip
the full recovery in this case, as RAID1 does (the code was
actually copied from the sync_request() method of RAID1).

Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agoMD: Fix typos in MD documentation
Jonathan Brassow [Wed, 24 Apr 2013 01:42:42 +0000 (11:42 +1000)]
MD: Fix typos in MD documentation

MD:  Fix some typos/grammer in MD documentation

Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd/raid5: avoid an extra write when writing to a known-bad-block.
NeilBrown [Wed, 24 Apr 2013 01:42:42 +0000 (11:42 +1000)]
md/raid5: avoid an extra write when writing to a known-bad-block.

If we write to a known-bad-block it will be flags as having
a ReadError by analyse_stripe, but the write will proceed anyway
(as it should).  Then the read-error handling will kick in an
write again, then re-read.

We don't need that 'write-again', so set R5_ReWrite so it looks like
it has already been done.  Then we will just get the re-read, which we
want.

Reported-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd/raid5: Change or of some order to improve efficiency.
majianpeng [Wed, 24 Apr 2013 01:42:41 +0000 (11:42 +1000)]
md/raid5: Change or of some order to improve efficiency.

As the function call is the most expensive of these tests it should be
done later in the chain so that it can be avoided in some cases.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd: use set_bit_le and clear_bit_le
Akinobu Mita [Wed, 24 Apr 2013 01:42:41 +0000 (11:42 +1000)]
md: use set_bit_le and clear_bit_le

The value returned by test_and_set_bit_le() drivers/md/bitmap.c is not used.
So just use set_bit_le(). The same goes for test_and_clear_bit_le().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Cc: linux-raid@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd: HOT_DISK_REMOVE shouldn't make a read-auto device active.
NeilBrown [Wed, 24 Apr 2013 01:42:41 +0000 (11:42 +1000)]
md: HOT_DISK_REMOVE shouldn't make a read-auto device active.

If a fail device or a spare is removed from an array, there is
not need to make the array 'active'.  If/when the array does become
active for some other reason the metadata will be update to reflect
the removal.
If that never happens and the array is stopped while still read-auto,
then there is no loss in forgetting the that the device had 'failed'.

A read-only array will leave failed devices attached to
the array personality, so we need to explicitly call
remove_and_add_spares() to free it (clearing Blocked just
like we do in store_slot()).

Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd: use common code for all calls to ->hot_remove_disk()
NeilBrown [Wed, 24 Apr 2013 01:42:41 +0000 (11:42 +1000)]
md: use common code for all calls to ->hot_remove_disk()

slot_store and remove_and_add_spares both call ->hot_remove_disk(),
but with slightly different tests and consequences, which is
at least untidy and might be buggy.

So modify remove_and_add_spaces() so that it can be asked
to remove a specific device, and call it from slot_store().

We also clear the Blocked flag to ensure that doesn't prevent
removal.  The purpose of Blocked is to prevent automatic removal
by the kernel before an error is acknowledged.
If the array is read/write then user-space would have not reason
to remove a device unless it was known to be 'spare' or 'faulty' in
which it would have already cleared the Blocked flag.
If the array is read-only, the flag might still be blocked, but
there is no harm in clearing the flag for read-only arrays.

Signed-off-by: NeilBrown <neilb@suse.de>
11 years agomd: never update metadata when array is read-only.
NeilBrown [Wed, 24 Apr 2013 01:42:40 +0000 (11:42 +1000)]
md: never update metadata when array is read-only.

Normally we don't even try to update the metadata if
the array is read-only.  However future patches
will increase the number of things that can happen on a read-only
array, so it is safest to explicitly disable this.

Every time that mddev->ro is set to 0, either
 - md_update_sb will be called again (at least if MD_CHANGE_DEVS
   is set) or
 - the mddev->thread is scheduled, which will also run
   md_update_sb if needed.

So this is safe: if the array ever become read-write the
metadata will be updated.

Signed-off-by: NeilBrown <neilb@suse.de>
11 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Mon, 22 Apr 2013 22:00:59 +0000 (15:00 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS fix from Ralf Baechle:
 "Revert the change of the definition of PAGE_MASK which was prettier
  but broke a few relativly rare platforms"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  Revert "MIPS: page.h: Provide more readable definition for PAGE_MASK."

11 years agoRevert "MIPS: page.h: Provide more readable definition for PAGE_MASK."
Ralf Baechle [Mon, 22 Apr 2013 15:57:54 +0000 (17:57 +0200)]
Revert "MIPS: page.h: Provide more readable definition for PAGE_MASK."

This reverts commit c17a6554782ad531f4713b33fd6339ba67ef6391.

Manuel Lauss writes:

lmo commit c17a6554 (MIPS: page.h: Provide more readable definition for
PAGE_MASK) apparently breaks ioremap of 36-bit addresses on my Alchemy
systems (PCI and PCMCIA) The reason is that in arch/mips/mm/ioremap.c
line 157  (phys_addr &= PAGE_MASK) bits 32-35 are cut off.  Seems the
new PAGE_MASK is explicitly 32bit, or one could make it signed instead
of unsigned long.

11 years agokernel/hz.bc: ignore.
Rusty Russell [Mon, 22 Apr 2013 09:21:50 +0000 (18:51 +0930)]
kernel/hz.bc: ignore.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Mon, 22 Apr 2013 14:07:46 +0000 (07:07 -0700)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fix from Herbert Xu:
 "This fixes a kernel memory leak in the algif interface"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif - suppress sending source address information in recvmsg

11 years agoLinux 3.9-rc8
Linus Torvalds [Sun, 21 Apr 2013 21:38:45 +0000 (14:38 -0700)]
Linux 3.9-rc8

11 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 21 Apr 2013 17:25:42 +0000 (10:25 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86: Fix offcore_rsp valid mask for SNB/IVB
  perf: Treat attr.config as u64 in perf_swevent_init()

11 years agoMerge branch 'vm_ioremap_memory-examples'
Linus Torvalds [Sun, 21 Apr 2013 17:16:56 +0000 (10:16 -0700)]
Merge branch 'vm_ioremap_memory-examples'

I'm going to do an -rc8, so I'm just going to do this rather than delay
it any further. They are arguably stable material anyway.

* vm_ioremap_memory-examples:
  mtdchar: remove no-longer-used vma helpers
  vm: convert snd_pcm_lib_mmap_iomem() to vm_iomap_memory() helper
  vm: convert fb_mmap to vm_iomap_memory() helper
  vm: convert mtdchar mmap to vm_iomap_memory() helper
  vm: convert HPET mmap to vm_iomap_memory() helper

11 years agoMerge branch 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 21 Apr 2013 01:40:36 +0000 (18:40 -0700)]
Merge branch 'x86-kdump-for-linus' of git://git./linux/kernel/git/tip/tip

Pull kdump fixes from Peter Anvin:
 "The kexec/kdump people have found several problems with the support
  for loading over 4 GiB that was introduced in this merge cycle.  This
  is partly due to a number of design problems inherent in the way the
  various pieces of kdump fit together (it is pretty horrifically manual
  in many places.)

  After a *lot* of iterations this is the patchset that was agreed upon,
  but of course it is now very late in the cycle.  However, because it
  changes both the syntax and semantics of the crashkernel option, it
  would be desirable to avoid a stable release with the broken
  interfaces."

I'm not happy with the timing, since originally the plan was to release
the final 3.9 tomorrow.  But apparently I'm doing an -rc8 instead...

* 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kexec: use Crash kernel for Crash kernel low
  x86, kdump: Change crashkernel_high/low= to crashkernel=,high/low
  x86, kdump: Retore crashkernel= to allocate under 896M
  x86, kdump: Set crashkernel_low automatically

11 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 21 Apr 2013 01:38:48 +0000 (18:38 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Peter Anvin:
 "Three groups of fixes:

   1. Make sure we don't execute the early microcode patching if family
      < 6, since it would touch MSRs which don't exist on those
      families, causing crashes.

   2. The Xen partial emulation of HyperV can be dealt with more
      gracefully than just disabling the driver.

   3. More EFI variable space magic.  In particular, variables hidden
      from runtime code need to be taken into account too."

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, microcode: Verify the family before dispatching microcode patching
  x86, hyperv: Handle Xen emulation of Hyper-V more gracefully
  x86,efi: Implement efi_no_storage_paranoia parameter
  efi: Export efi_query_variable_store() for efivars.ko
  x86/Kconfig: Make EFI select UCS2_STRING
  efi: Distinguish between "remaining space" and actually used space
  efi: Pass boot services variable info to runtime code
  Move utf16 functions to kernel core and rename
  x86,efi: Check max_size only if it is non-zero.
  x86, efivars: firmware bug workarounds should be in platform code

11 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Sun, 21 Apr 2013 01:38:06 +0000 (18:38 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "A set of fixes from various people - Will Deacon gets a prize for
  removing code this time around.  The biggest fix in this lot is
  sorting out the ARM740T mess.  The rest are relatively small fixes."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7699/1: sched_clock: Add more notrace to prevent recursion
  ARM: 7698/1: perf: fix group validation when using enable_on_exec
  ARM: 7697/1: hw_breakpoint: do not use __cpuinitdata for dbg_cpu_pm_nb
  ARM: 7696/1: Fix kexec by setting outer_cache.inv_all for Feroceon
  ARM: 7694/1: ARM, TCM: initialize TCM in paging_init(), instead of setup_arch()
  ARM: 7692/1: iop3xx: move IOP3XX_PERIPHERAL_VIRT_BASE
  ARM: modules: don't export cpu_set_pte_ext when !MMU
  ARM: mm: remove broken condition check for v4 flushing
  ARM: mm: fix numerous hideous errors in proc-arm740.S
  ARM: cache: remove ARMv3 support code
  ARM: tlbflush: remove ARMv3 support

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Linus Torvalds [Sun, 21 Apr 2013 01:23:08 +0000 (18:23 -0700)]
Merge git://git./linux/kernel/git/davem/sparc

Pull sparc fixes from David Miller:

 1) Fix race in sparc64 TLB shootdowns, we have to synchronize with the
    sibling cpus completing if we are passing them a reference via
    pointer to a data structure.

 2) Fix cleaning of bitmaps in sparc32, from Akinobu Mita.

 3) Fix various sparc header mistakes, some of which resulted in
    userland build breakage.  From Sam Ravnborg.

 4) Kill ghost declarations and defines missed when several bits of code
    got deleted recently.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Fix race in TLB batch processing.
  sparc: use asm-generic version of types.h
  bbc_i2c: fix section mismatch warning
  sparc: use generic headers
  sparc:cleanup unused code in smp_32.h
  sparc/iommu: fix typo s/265KB/256KB/
  sparc/srmmu: clear trailing edge of bitmap properly
  sparc:remove unused declaration smp_boot_cpus()

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sun, 21 Apr 2013 01:21:05 +0000 (18:21 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking updates from David Miller:

 1) ax88796 does 64-bit divides which causes link errors on ARM, fix
    from Arnd Bergmann.

 2) Once an improper offload setting is detected on an SKB we don't rate
    limit the log message so we can very easily live lock.  From Ben
    Greear.

 3) Openvswitch cannot report vport configuration changes reliably
    because it didn't preallocate the netlink notification message
    before changing state.  From Jesse Gross.

 4) The effective UID/GID SCM credentials fix, from Linus.

 5) When a user explicitly asks for wireless authentication, cfg80211
    isn't told about the AP detachment leaving inconsistent state.  Fix
    from Johannes Berg.

 6) Fix self-MAC checks in batman-adv on multi-mesh nodes, from Antonio
    Quartulli.

 7) Revert build_skb() change sin IGB driver, can result in memory
    corruption.  From Alexander Duyck.

 8) Fix setting VLANs on virtual functions in IXGBE, from Greg Rose.

 9) Fix TSO races in qlcnic driver, from Sritej Velaga.

10) In bnx2x the kernel driver and UNDI firmware can try to program the
    chip at the same time, resulting in corruption.  Add proper
    synchronization.  From Dmitry Kravkov.

11) Fix corruption of status block in firmware ram in bxn2x, from Ariel
    Elior.

12) Fix load balancing hash regression of bonding driver in forwarding
    configurations, from Eric Dumazet.

13) Fix TS ECR regression in TCP by calling tcp_replace_ts_recent() in
    all the right spots, from Eric Dumazet.

14) Fix several bonding bugs having to do with address manintainence,
    including not removing address when configuration operations
    encounter errors, missed locking on the address lists, missing
    refcounting on VLAN objects, etc.  All from Nikolay Aleksandrov.

15) Add workarounds for firmware bugs in LTE qmi_wwan devices, wherein
    the devices fail to add a proper ethernet header while on LTE
    networks but otherwise properly do so on 2G and 3G ones.  From Bjørn
    Mork.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
  net: fix incorrect credentials passing
  net: rate-limit warn-bad-offload splats.
  net: ax88796: avoid 64 bit arithmetic
  qlge: Update version to 1.00.00.32.
  qlge: Fix ethtool autoneg advertising.
  qlge: Fix receive path to drop error frames
  net: qmi_wwan: prevent duplicate mac address on link (firmware bug workaround)
  net: qmi_wwan: fixup destination address (firmware bug workaround)
  net: qmi_wwan: fixup missing ethernet header (firmware bug workaround)
  bonding: in bond_mc_swap() bond's mc addr list is walked without lock
  bonding: disable netpoll on enslave failure
  bonding: primary_slave & curr_active_slave are not cleaned on enslave failure
  bonding: vlans don't get deleted on enslave failure
  bonding: mc addresses don't get deleted on enslave failure
  pkt_sched: fix error return code in fw_change_attrs()
  irda: small read past the end of array in debug code
  tcp: call tcp_replace_ts_recent() from tcp_ack()
  netfilter: xt_rpfilter: skip locally generated broadcast/multicast, too
  netfilter: ipset: bitmap:ip,mac: fix listing with timeout
  bonding: fix l23 and l34 load balancing in forwarding path
  ...

11 years agonet: fix incorrect credentials passing
Linus Torvalds [Fri, 19 Apr 2013 15:32:32 +0000 (15:32 +0000)]
net: fix incorrect credentials passing

Commit 257b5358b32f ("scm: Capture the full credentials of the scm
sender") changed the credentials passing code to pass in the effective
uid/gid instead of the real uid/gid.

Obviously this doesn't matter most of the time (since normally they are
the same), but it results in differences for suid binaries when the wrong
uid/gid ends up being used.

This just undoes that (presumably unintentional) part of the commit.

Reported-by: Andy Lutomirski <luto@amacapital.net>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Serge E. Hallyn <serge@hallyn.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge remote-tracking branch 'efi/urgent' into x86/urgent
H. Peter Anvin [Sat, 20 Apr 2013 00:09:03 +0000 (17:09 -0700)]
Merge remote-tracking branch 'efi/urgent' into x86/urgent

Matt Fleming (1):
      x86, efivars: firmware bug workarounds should be in platform
      code

Matthew Garrett (3):
      Move utf16 functions to kernel core and rename
      efi: Pass boot services variable info to runtime code
      efi: Distinguish between "remaining space" and actually used
      space

Richard Weinberger (2):
      x86,efi: Check max_size only if it is non-zero.
      x86,efi: Implement efi_no_storage_paranoia parameter

Sergey Vlasov (2):
      x86/Kconfig: Make EFI select UCS2_STRING
      efi: Export efi_query_variable_store() for efivars.ko

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
11 years agox86, microcode: Verify the family before dispatching microcode patching
H. Peter Anvin [Fri, 19 Apr 2013 23:36:03 +0000 (16:36 -0700)]
x86, microcode: Verify the family before dispatching microcode patching

For each CPU vendor that implements CPU microcode patching, there will
be a minimum family for which this is implemented.  Verify this
minimum level of support.

This can be done in the dispatch function or early in the application
functions.  Doing the latter turned out to be somewhat awkward because
of the ineviable split between the BSP and the AP paths, and rather
than pushing deep into the application functions, do this in
the dispatch function.

Reported-by: "Bryan O'Donoghue" <bryan.odonoghue.lkml@nexus-software.ie>
Suggested-by: Borislav Petkov <bp@alien8.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1366392183-4149-1-git-send-email-bryan.odonoghue.lkml@nexus-software.ie
11 years agonet: rate-limit warn-bad-offload splats.
Ben Greear [Fri, 19 Apr 2013 10:45:52 +0000 (10:45 +0000)]
net: rate-limit warn-bad-offload splats.

If one does do something unfortunate and allow a
bad offload bug into the kernel, this the
skb_warn_bad_offload can effectively live-lock the
system, filling the logs with the same error over
and over.

Add rate limitation to this so that box remains otherwise
functional in this case.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: ax88796: avoid 64 bit arithmetic
Arnd Bergmann [Fri, 19 Apr 2013 08:47:26 +0000 (08:47 +0000)]
net: ax88796: avoid 64 bit arithmetic

When building ax88796 on an ARM platform with 64-bit resource_size_t,
we currently get

drivers/net/ethernet/8390/ax88796.c:875: undefined reference to `__aeabi_uldivmod'

because we do a division on the length of the MMIO resource.
Since we know that this resource is very short, using an
"unsigned long" instead of "resource_size_t" is entirely
sufficient, and avoids this link-time error.

Cc: Ben Dooks <ben-linux@fluff.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlge: Update version to 1.00.00.32.
Jitendra Kalsaria [Thu, 18 Apr 2013 19:49:54 +0000 (19:49 +0000)]
qlge: Update version to 1.00.00.32.

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlge: Fix ethtool autoneg advertising.
Jitendra Kalsaria [Thu, 18 Apr 2013 19:49:53 +0000 (19:49 +0000)]
qlge: Fix ethtool autoneg advertising.

Autoneg is supported on specific port types only. Fix the driver to advertise
autoneg based on the port type.

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlge: Fix receive path to drop error frames
Sritej Velaga [Thu, 18 Apr 2013 19:49:52 +0000 (19:49 +0000)]
qlge: Fix receive path to drop error frames

o Fix the driver to drop error frames in the receive path
o Update error counter which was not getting incremented

Signed-off-by: Sritej Velaga <sritej.velaga@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'qmi_wwan'
David S. Miller [Fri, 19 Apr 2013 21:51:26 +0000 (17:51 -0400)]
Merge branch 'qmi_wwan'

Bjørn Mork says:

====================
This series adds workarounds for 3 different firmware bugs, each
preventing the affected devices from working at all. I therefore
humbly request that these fixes go to stable-3.8 (if still
maintained) and 3.9 (either via net if still possible, or via
stable if not).

All 3 workarounds are applied to all devices supported by the driver.
Adding quirks for specific devices was considered as an alternative,
but was rejected because we have too little information about the
exact distribution of the buggy firmwares. All we know is that the
same bug shows up in devices from at least 3 different, and presumably
independent, vendors.

The workarounds have instead been designed to automatically apply
when necessary, and to have as little impact as possible on unaffected
devices.  The series has been tested on a number of devices both with
and without these bugs.

The series should apply cleanly to net/master, net-next/master and
stable/linux-3.8.y
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: qmi_wwan: prevent duplicate mac address on link (firmware bug workaround)
Bjørn Mork [Thu, 18 Apr 2013 12:57:11 +0000 (12:57 +0000)]
net: qmi_wwan: prevent duplicate mac address on link (firmware bug workaround)

We normally trust and use the CDC functional descriptors provided by a
number of devices.  But some of these will erroneously list the address
reserved for the device end of the link.  Attempting to use this on
both the device and host side will naturally not work.

Work around this bug by ignoring the functional descriptor and assign a
random address instead in this case.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: qmi_wwan: fixup destination address (firmware bug workaround)
Bjørn Mork [Thu, 18 Apr 2013 12:57:10 +0000 (12:57 +0000)]
net: qmi_wwan: fixup destination address (firmware bug workaround)

Received packets are sometimes addressed to 00:a0:c6:00:00:00
instead of the address the device firmware should have learned
from the host:

321.224126 77.16.85.204 -> 148.122.171.134 ICMP 98 Echo (ping) request  id=0x4025, seq=64/16384, ttl=64

0000  82 c0 82 c9 f1 67 82 c0 82 c9 f1 67 08 00 45 00   .....g.....g..E.
0010  00 54 00 00 40 00 40 01 57 cc 4d 10 55 cc 94 7a   .T..@.@.W.M.U..z
0020  ab 86 08 00 62 fc 40 25 00 40 b2 bc 6e 51 00 00   ....b.@%.@..nQ..
0030  00 00 6b bd 09 00 00 00 00 00 10 11 12 13 14 15   ..k.............
0040  16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25   .......... !"#$%
0050  26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35   &'()*+,-./012345
0060  36 37                                             67

321.240607 148.122.171.134 -> 77.16.85.204 ICMP 98 Echo (ping) reply    id=0x4025, seq=64/16384, ttl=55

0000  00 a0 c6 00 00 00 02 50 f3 00 00 00 08 00 45 00   .......P......E.
0010  00 54 00 56 00 00 37 01 a0 76 94 7a ab 86 4d 10   .T.V..7..v.z..M.
0020  55 cc 00 00 6a fc 40 25 00 40 b2 bc 6e 51 00 00   U...j.@%.@..nQ..
0030  00 00 6b bd 09 00 00 00 00 00 10 11 12 13 14 15   ..k.............
0040  16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25   .......... !"#$%
0050  26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35   &'()*+,-./012345
0060  36 37                                             67

The bogus address is always the same, and matches the address
suggested by many devices as a default address.  It is likely a
hardcoded firmware default.

The circumstances where this bug has been observed indicates that
the trigger is related to timing or some other factor the host
cannot control. Repeating the exact same configuration sequence
that caused it to trigger once, will not necessarily cause it to
trigger the next time. Reproducing the bug is therefore difficult.
This opens up a possibility that the bug is more common than we can
confirm, because affected devices often will work properly again
after a reset.  A procedure most users are likely to try out before
reporting a bug.

Unconditionally rewriting the destination address if the first digit
of the received packet is 0, is considered an acceptable compromise
since we already have to inspect this digit.  The simplification will
cause unnecessary rewrites if the real address starts with 0, but this
is still better than adding additional tests for this particular case.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: qmi_wwan: fixup missing ethernet header (firmware bug workaround)
Bjørn Mork [Thu, 18 Apr 2013 12:57:09 +0000 (12:57 +0000)]
net: qmi_wwan: fixup missing ethernet header (firmware bug workaround)

A number of LTE devices from different vendors all suffer from the
same firmware bug: Most of the packets received from the device while
it is attached to a LTE network will not have an ethernet header. The
devices work as expected when attached to 2G or 3G networks, sending
an ethernet header with all packets.

This driver is not aware of which network the modem attached to, and
even if it were there are still some packet types which are always
received with the header intact.

All devices supported by this driver have severely limited
networking capabilities:
 - can only transmit IPv4, IPv6 and possibly ARP
 - can only support a single host hardware address at any time
 - will only do point-to-point communcation with the host

Because of this, we are able to reliably identify any bogus raw IP
packets by simply looking at the 4 IP version bits.  All we need to
do is to avoid 4 or 6 in the first digit of the mac address.  This
workaround ensures this, and fix up the received packets as necessary.

Given the distribution of the bug, it is believed that the source is
the chipset vendor.  The devices which are verified to be affected are:
 Huawei E392u-12 (Qualcomm MDM9200)
 Pantech UML290  (Qualcomm MDM9600)
 Novatel USB551L (Qualcomm MDM9600)
 Novatel E362    (Qualcomm MDM9600)

It is believed that the bug depend on firmware revision, which means
that possibly all devices based on the above mentioned chipset may be
affected if we consider all available firmware revisions.

The information about affected devices and versions is likely
incomplete.  As the additional overhead for packets not needing this
fixup is very small, it is considered acceptable to apply the
workaround to all devices handled by this driver.

Reported-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'bonding'
David S. Miller [Fri, 19 Apr 2013 21:49:11 +0000 (17:49 -0400)]
Merge branch 'bonding'

Nikolay Aleksandrov says:

====================
This patch-set fixes mainly bugs on enslave failure and one occasion
of a needed locking. The patches are:

1. On enslave failure mc addresses are not flushed from the slave
2. On enslave failure vlans are not cleaned up from the slave
3. On enslave failure the bond's primary and curr_active_slave
   are not cleaned up (which might result in use of freed memory)
4. On enslave failure netpoll is not disabled which might result in
   a memory leak
5. In bond_mc_swap() the bond's mc addr list is walked without
   netif_addr_lock, since it can be called without rtnl, add it

v2: patch 01 - fix log message and remove unnecessary code move
====================

Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: in bond_mc_swap() bond's mc addr list is walked without lock
nikolay@redhat.com [Thu, 18 Apr 2013 07:33:38 +0000 (07:33 +0000)]
bonding: in bond_mc_swap() bond's mc addr list is walked without lock

Use netif_addr_lock_bh() to acquire the appropriate lock before walking.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: disable netpoll on enslave failure
nikolay@redhat.com [Thu, 18 Apr 2013 07:33:37 +0000 (07:33 +0000)]
bonding: disable netpoll on enslave failure

slave_disable_netpoll() is not called upon enslave failure which would
lead to a memory leak. Call slave_disable_netpoll() after err_detach as
that's the first error path after enabling netpoll on that slave.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: primary_slave & curr_active_slave are not cleaned on enslave failure
nikolay@redhat.com [Thu, 18 Apr 2013 07:33:36 +0000 (07:33 +0000)]
bonding: primary_slave & curr_active_slave are not cleaned on enslave failure

On enslave failure primary_slave can point to new_slave which is to be
freed, and the same applies to curr_active_slave. So check if this is
the case and clean up properly after err_detach because that's the first
error code path after they're set.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: vlans don't get deleted on enslave failure
nikolay@redhat.com [Thu, 18 Apr 2013 07:33:35 +0000 (07:33 +0000)]
bonding: vlans don't get deleted on enslave failure

The main problem is with vid refcount which only gets bumped up.
Delete the vlans after err_detach as that's the first error path
after the vlans are added.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: mc addresses don't get deleted on enslave failure
nikolay@redhat.com [Thu, 18 Apr 2013 07:33:34 +0000 (07:33 +0000)]
bonding: mc addresses don't get deleted on enslave failure

Add bond_mc_list_flush() after err_detach as that's the first error path
after the addresses are added. The main issue is the mc addresses' refcount
which only gets bumped up.

v2: update log message and don't move code unnecessarily

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agopkt_sched: fix error return code in fw_change_attrs()
Wei Yongjun [Wed, 17 Apr 2013 16:49:10 +0000 (16:49 +0000)]
pkt_sched: fix error return code in fw_change_attrs()

Fix to return -EINVAL when tb[TCA_FW_MASK] is set and head->mask != 0xFFFFFFFF
instead of 0 (ifdef CONFIG_NET_CLS_IND and tb[TCA_FW_INDEV]), as done elsewhere
in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoirda: small read past the end of array in debug code
Dan Carpenter [Tue, 16 Apr 2013 21:10:38 +0000 (21:10 +0000)]
irda: small read past the end of array in debug code

The "reason" can come from skb->data[] and it hasn't been capped so it
can be from 0-255 instead of just 0-6.  For example in irlmp_state_dtr()
the code does:

reason = skb->data[3];
...
irlmp_disconnect_indication(self, reason, skb);

Also LMREASON has a couple other values which don't have entries in the
irlmp_reasons[] array.  And 0xff is a valid reason as well which means
"unknown".

So far as I can see we don't actually care about "reason" except for in
the debug code.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agosparc64: Fix race in TLB batch processing.
David S. Miller [Fri, 19 Apr 2013 21:26:26 +0000 (17:26 -0400)]
sparc64: Fix race in TLB batch processing.

As reported by Dave Kleikamp, when we emit cross calls to do batched
TLB flush processing we have a race because we do not synchronize on
the sibling cpus completing the cross call.

So meanwhile the TLB batch can be reset (tb->tlb_nr set to zero, etc.)
and either flushes are missed or flushes will flush the wrong
addresses.

Fix this by using generic infrastructure to synchonize on the
completion of the cross call.

This first required getting the flush_tlb_pending() call out from
switch_to() which operates with locks held and interrupts disabled.
The problem is that smp_call_function_many() cannot be invoked with
IRQs disabled and this is explicitly checked for with WARN_ON_ONCE().

We get the batch processing outside of locked IRQ disabled sections by
using some ideas from the powerpc port. Namely, we only batch inside
of arch_{enter,leave}_lazy_mmu_mode() calls.  If we're not in such a
region, we flush TLBs synchronously.

1) Get rid of xcall_flush_tlb_pending and per-cpu type
   implementations.

2) Do TLB batch cross calls instead via:

smp_call_function_many()
tlb_pending_func()
__flush_tlb_pending()

3) Batch only in lazy mmu sequences:

a) Add 'active' member to struct tlb_batch
b) Define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
c) Set 'active' in arch_enter_lazy_mmu_mode()
d) Run batch and clear 'active' in arch_leave_lazy_mmu_mode()
e) Check 'active' in tlb_batch_add_one() and do a synchronous
           flush if it's clear.

4) Add infrastructure for synchronous TLB page flushes.

a) Implement __flush_tlb_page and per-cpu variants, patch
   as needed.
b) Likewise for xcall_flush_tlb_page.
c) Implement smp_flush_tlb_page() to invoke the cross-call.
d) Wire up global_flush_tlb_page() to the right routine based
           upon CONFIG_SMP

5) It turns out that singleton batches are very common, 2 out of every
   3 batch flushes have only a single entry in them.

   The batch flush waiting is very expensive, both because of the poll
   on sibling cpu completeion, as well as because passing the tlb batch
   pointer to the sibling cpus invokes a shared memory dereference.

   Therefore, in flush_tlb_pending(), if there is only one entry in
   the batch perform a completely asynchronous global_flush_tlb_page()
   instead.

Reported-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com>
11 years agoARM: 7699/1: sched_clock: Add more notrace to prevent recursion
Stephen Boyd [Thu, 18 Apr 2013 16:33:40 +0000 (17:33 +0100)]
ARM: 7699/1: sched_clock: Add more notrace to prevent recursion

cyc_to_sched_clock() is called by sched_clock() and cyc_to_ns()
is called by cyc_to_sched_clock(). I suspect that some compilers
inline both of these functions into sched_clock() and so we've
been getting away without having a notrace marking. It seems that
my compiler isn't inlining cyc_to_sched_clock() though, so I'm
hitting a recursion bug when I enable the function graph tracer,
causing my system to crash. Marking these functions notrace fixes
it. Technically cyc_to_ns() doesn't need the notrace because it's
already marked inline, but let's just add it so that if we ever
remove inline from that function it doesn't blow up.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
11 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Fri, 19 Apr 2013 18:38:36 +0000 (11:38 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Only one remaining fix for arm-soc platforms at this time, a small
  bugfix for cpu hotplug on highbank platforms that has become much
  easier to hit as of late.

  Details in the patch description, but it's small and well-contained
  and definitely impacts users of the platform, so 3.9 seems
  appropriate."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: highbank: fix cache flush ordering for cpu hotplug

11 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Fri, 19 Apr 2013 18:24:47 +0000 (14:24 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
If time allows, please consider pulling the following patchset contains two
late Netfilter fixes, they are:

* Skip broadcast/multicast locally generated traffic in the rpfilter,
  (closes netfilter bugzilla #814), from Florian Westphal.

* Fix missing elements in the listing of ipset bitmap ip,mac set
  type with timeout support enabled, from Jozsef Kadlecsik.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Fri, 19 Apr 2013 18:23:55 +0000 (14:23 -0400)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless

John W. Linville says:

====================
A few stragglers hoping for 3.9, somewhat delayed due to my travels...

On the mac80211 bits, Johannes says:

"Sadly, I have another pull request -- the idle handling fix broke LED
handling in some cases."

and:

"Yet one more!

This fixes a fairly important/annoying bug -- when roaming between
multiple APs of the same network, the system could get stuck thinking it
was connected to the old one while it really wasn't."

On top of that...

Arend sends a brcmfmac patch that removes advertising a feature that
isn't actually fully supported, and a brcmsmac patch that rearranges
code to request firmware at IFF_UP to play more nicely with being
built into the kernel.

Felix gives us a minor ath9k_htc fix to support the newly released
open source firmware, and an ath9k_hw initvals fix to improve device
stability.

RafaĹ‚ MiĹ‚ecki provides a fix for an ssb regression that caused a
serious performance problem with b43.

Zefir Kurtisi offers an ath9k fix to change some kmalloc flags to
allow the DFS detector to be called in softirq context.

Please let me know if there are problems.  If these don't make 3.9,
I'll just pull them into wireless-next -- just let me know if you
want to do it that way!
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotcp: call tcp_replace_ts_recent() from tcp_ack()
Eric Dumazet [Fri, 19 Apr 2013 07:19:48 +0000 (07:19 +0000)]
tcp: call tcp_replace_ts_recent() from tcp_ack()

commit bd090dfc634d (tcp: tcp_replace_ts_recent() should not be called
from tcp_validate_incoming()) introduced a TS ecr bug in slow path
processing.

1 A > B P. 1:10001(10000) ack 1 <nop,nop,TS val 1001 ecr 200>
2 B < A . 1:1(0) ack 1 win 257 <sack 9001:10001,TS val 300 ecr 1001>
3 A > B . 1:1001(1000) ack 1 win 227 <nop,nop,TS val 1002 ecr 200>
4 A > B . 1001:2001(1000) ack 1 win 227 <nop,nop,TS val 1002 ecr 200>

(ecr 200 should be ecr 300 in packets 3 & 4)

Problem is tcp_ack() can trigger send of new packets (retransmits),
reflecting the prior TSval, instead of the TSval contained in the
currently processed incoming packet.

Fix this by calling tcp_replace_ts_recent() from tcp_ack() after the
checks, but before the actions.

Reported-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agomtdchar: remove no-longer-used vma helpers
Linus Torvalds [Fri, 19 Apr 2013 17:05:39 +0000 (10:05 -0700)]
mtdchar: remove no-longer-used vma helpers

With the conversion to vm_iomap_memory(), these vma helpers are no
longer used.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agovm: convert snd_pcm_lib_mmap_iomem() to vm_iomap_memory() helper
Linus Torvalds [Fri, 19 Apr 2013 17:01:04 +0000 (10:01 -0700)]
vm: convert snd_pcm_lib_mmap_iomem() to vm_iomap_memory() helper

This is my example conversion of a few existing mmap users.  The pcm
mmap case is one of the more straightforward ones.

Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agovm: convert fb_mmap to vm_iomap_memory() helper
Linus Torvalds [Fri, 19 Apr 2013 16:57:35 +0000 (09:57 -0700)]
vm: convert fb_mmap to vm_iomap_memory() helper

This is my example conversion of a few existing mmap users.  The
fb_mmap() case is a good example because it is a bit more complicated
than some: fb_mmap() mmaps one of two different memory areas depending
on the page offset of the mmap (but happily there is never any mixing of
the two, so the helper function still works).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agovm: convert mtdchar mmap to vm_iomap_memory() helper
Linus Torvalds [Fri, 19 Apr 2013 16:53:07 +0000 (09:53 -0700)]
vm: convert mtdchar mmap to vm_iomap_memory() helper

This is my example conversion of a few existing mmap users.  The mtdchar
case is actually disabled right now (and stays disabled), but I did it
because it showed up on my "git grep", and I was familiar with the code
due to fixing an overflow problem in the code in commit 9c603e53d380
("mtdchar: fix offset overflow detection").

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agovm: convert HPET mmap to vm_iomap_memory() helper
Linus Torvalds [Fri, 19 Apr 2013 16:46:39 +0000 (09:46 -0700)]
vm: convert HPET mmap to vm_iomap_memory() helper

This is my example conversion of a few existing mmap users.  The HPET
case is simple, widely available, and easy to test (Clemens Ladisch sent
a trivial test-program for it).

Test-program-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 19 Apr 2013 16:15:13 +0000 (09:15 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:
 "Two more small fixups to the wacom driver"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wacom - fix "can not retrieve extra class descriptor" for DTH2242
  Input: wacom - DTH2242 Grip Pen id was off by one bit

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...
Linus Torvalds [Fri, 19 Apr 2013 16:12:55 +0000 (09:12 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse

Pull fuse build fix from Miklos Szeredi:
 "This fixes android builds.  The patch appears large, but is just
  search & replace."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: fix type definitions in uapi header

11 years agoInput: wacom - fix "can not retrieve extra class descriptor" for DTH2242
Ping Cheng [Tue, 16 Apr 2013 23:10:08 +0000 (16:10 -0700)]
Input: wacom - fix "can not retrieve extra class descriptor" for DTH2242

Same as Cintiq 24HDT, DTH2242 has two interfaces sharing one configuration.
This patch ignores the second interface.

Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
11 years agoInput: wacom - DTH2242 Grip Pen id was off by one bit
Ping Cheng [Tue, 16 Apr 2013 23:09:33 +0000 (16:09 -0700)]
Input: wacom - DTH2242 Grip Pen id was off by one bit

Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
11 years agoMerge branch 'userns-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/luto...
Linus Torvalds [Fri, 19 Apr 2013 01:09:12 +0000 (18:09 -0700)]
Merge branch 'userns-fixes' of git://git./linux/kernel/git/luto/linux

Pull user-namespace fixes from Andy Lutomirski.

* 'userns-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux:
  userns: Changing any namespace id mappings should require privileges
  userns: Check uid_map's opener's fsuid, not the current fsuid
  userns: Don't let unprivileged users trick privileged users into setting the id_map

11 years agoMerge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86
Linus Torvalds [Thu, 18 Apr 2013 22:14:34 +0000 (15:14 -0700)]
Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86

Pull x86 platform driver revert from Matthew Garrett:
 "It turns out that one of the hp-wmi patches this cycle breaks some
  other HP laptops.  I think we have a good idea how to work on it for
  3.10, but it's safer to just revert it for now."

* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86:
  Revert "hp-wmi: Add support for SMBus hotkeys"

11 years agonetfilter: xt_rpfilter: skip locally generated broadcast/multicast, too
Florian Westphal [Wed, 17 Apr 2013 22:45:24 +0000 (22:45 +0000)]
netfilter: xt_rpfilter: skip locally generated broadcast/multicast, too

Alex Efros reported rpfilter module doesn't match following packets:
IN=br.qemu SRC=192.168.2.1 DST=192.168.2.255 [ .. ]
(netfilter bugzilla #814).

Problem is that network stack arranges for the locally generated broadcasts
to appear on the interface they were sent out, so the IFF_LOOPBACK check
doesn't trigger.

As -m rpfilter is restricted to PREROUTING, we can check for existing
rtable instead, it catches locally-generated broad/multicast case, too.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
11 years agoRevert "hp-wmi: Add support for SMBus hotkeys"
Matthew Garrett [Thu, 18 Apr 2013 21:53:10 +0000 (14:53 -0700)]
Revert "hp-wmi: Add support for SMBus hotkeys"

This reverts commit fabf85e3ca15d5b94058f391dac8df870cdd427a which breaks
hotkey support on some other HP laptops. We'll try doing this differently
in 3.10.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
11 years agonetfilter: ipset: bitmap:ip,mac: fix listing with timeout
Jozsef Kadlecsik [Sat, 13 Apr 2013 12:30:54 +0000 (14:30 +0200)]
netfilter: ipset: bitmap:ip,mac: fix listing with timeout

The type when timeout support was enabled, could not list all elements,
just the first ones which could fit into one netlink message: it just
did not continue listing after the first message.

Reported-by: Yoann JUET <yoann.juet@univ-nantes.fr>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Tested-by: Yoann JUET <yoann.juet@univ-nantes.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
11 years agobonding: fix l23 and l34 load balancing in forwarding path
Eric Dumazet [Mon, 15 Apr 2013 17:03:24 +0000 (17:03 +0000)]
bonding: fix l23 and l34 load balancing in forwarding path

Since commit 6b923cb7188d46 (bonding: support for IPv6 transmit hashing)
bonding doesn't properly hash traffic in forwarding setups.

Vitaly V. Bursov diagnosed that skb_network_header_len() returned 0 in
this case.

More generally, the transport header might not be in the skb head.

Use pskb_may_pull() & skb_header_pointer() to get it right, and use
proto_ports_offset() in bond_xmit_hash_policy_l34() to get support for
more protocols than TCP and UDP.

Reported-by: Vitaly V. Bursov <vitalyb@telenet.dn.ua>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jay Vosburgh <fubar@us.ibm.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: John Eaglesham <linux@8192.net>
Tested-by: Vitaly V. Bursov <vitalyb@telenet.dn.ua>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: Fix status blocks configuration
Ariel Elior [Wed, 17 Apr 2013 22:49:06 +0000 (22:49 +0000)]
bnx2x: Fix status blocks configuration

This fixes 2 issues regarding bnx2x's status blocks:

   1. ethtool -c caused corruption of status blocks in FW RAM.

   2. when using multi-CoS, the configuration of the timeout values of
      status blocks is incorrect, harming the coalescing of interrupts
      for such CoSs.

Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: Prevent UNDI FW illegal host access
Dmitry Kravkov [Wed, 17 Apr 2013 22:49:05 +0000 (22:49 +0000)]
bnx2x: Prevent UNDI FW illegal host access

When loading after UNDI (e.g., Boot from SAN) the UNDI does not
gracefully yield its resources; The bnx2x driver handles that release
itself.

During the manipulation required to release those resources, it's possible
for the UNDI to try and write to memory regions which are no longer accessible,
causing the PCI bus to prevent further writes from the chip.

This would in turn cause DMAE timeouts later on in the driver, as the driver
will be unable to use the chip's DMA engines.

This patch prevents the chip from actually writing through the PCI bus
in said scenario, thus allowing the release without the unfortunate by-product.

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Thu, 18 Apr 2013 19:01:30 +0000 (15:01 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless into for-davem

11 years agoMerge branch 'qlogic'
David S. Miller [Thu, 18 Apr 2013 18:55:07 +0000 (14:55 -0400)]
Merge branch 'qlogic'

Shahed Shaikh says:

====================
This patch series contains bug fixes for -
* Loopback test failure while traffic is running.
* Tx timeout and subsequent firmware reset by removing check for
  '(adapter->netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)' from tx fast
  path, as per Eric's suggestion.
* Typo in logs.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: Fix typo in logs
Shahed Shaikh [Thu, 18 Apr 2013 08:10:06 +0000 (08:10 +0000)]
qlcnic: Fix typo in logs

o Debug logs were not matching with code functionality.
o Changed dev_info to netdev_err

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: fix TSO race condition
Sritej Velaga [Thu, 18 Apr 2013 08:10:05 +0000 (08:10 +0000)]
qlcnic: fix TSO race condition

When driver receives a packet with gso size > 0 and when TSO is disabled,
it should be transmitted as a TSO packet to prevent Tx timeout and subsequent
firmware reset.

Signed-off-by: Sritej Velaga <sritej.velaga@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: Stop traffic before performing loopback test
Jitendra Kalsaria [Thu, 18 Apr 2013 08:10:04 +0000 (08:10 +0000)]
qlcnic: Stop traffic before performing loopback test

Before conducting loopback test by sending packets, driver should stop transmit
queue and turn off carrier.

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoixgbe: Fix a bug in setting VF VLAN via PF
Greg Rose [Wed, 17 Apr 2013 20:41:35 +0000 (20:41 +0000)]
ixgbe: Fix a bug in setting VF VLAN via PF

The PF driver does not check if the administrator has already set a VF
VLAN via the PF driver before setting the new VLAN.  This results in
the following scenario:

A) Administrator sets VF <n> to VLAN 100
B) Administrator sets VF <x> to VLAN 100
C) Administrator sets VF <n> to VLAN 200
D) The VF <n> driver continues to be able to receive traffic on VLAN
   100 because the VLVFB pool enable bit for that VF was left set
   instead of being cleared as it should be.

This fix ensures that the old VLAN filter for VF <n> is first removed
and the pool bit enable for VF <n> is cleared so that it no longer
receives traffic on VLAN 100.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoigb: Revert support for build_skb in igb
Alexander Duyck [Wed, 17 Apr 2013 20:41:04 +0000 (20:41 +0000)]
igb: Revert support for build_skb in igb

This patch actually reverts:
igb: Support using build_skb in the case that jumbo frames are disabled

The reason for reverting this patch is that it can lead to data corruption.
The following flow was pointed out by Ben Hutchings:

1. skb is forwarded to another device
2. Packet headers are modified and it's put into a queue
3. Second packet is received into the other half of this page
4. Page cannot be reused, so is DMA-unmapped
5. The DMA mapping was non-coherent, so unmap copies or invalidates
cache

The headers added in step 2 get trashed in step 5.

Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge
David S. Miller [Thu, 18 Apr 2013 18:50:38 +0000 (14:50 -0400)]
Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge

Included changes:
- fix MAC address check in case of multiple mesh interfaces

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoARM: highbank: fix cache flush ordering for cpu hotplug
Rob Herring [Wed, 17 Apr 2013 15:46:52 +0000 (10:46 -0500)]
ARM: highbank: fix cache flush ordering for cpu hotplug

The L1 data cache flush needs to be after highbank_set_cpu_jump call which
pollutes the cache with the l2x0_lock. This causes other cores to deadlock
waiting for the l2x0_lock. Moving the flush of the entire data cache after
highbank_set_cpu_jump fixes the problem. Use flush_cache_louis instead of
flush_cache_all are that is sufficient to flush only the L1 data cache.
flush_cache_louis did not exist when highbank_cpu_die was originally
written.

With PL310 errata 769419 enabled, a wmb is inserted into idle which takes
the l2x0_lock. This makes the problem much more easily hit and causes
reset to hang.

Reported-by: Paolo Pisati <p.pisati@gmail.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
11 years agoRevert "block: add missing block_bio_complete() tracepoint"
Linus Torvalds [Thu, 18 Apr 2013 16:00:26 +0000 (09:00 -0700)]
Revert "block: add missing block_bio_complete() tracepoint"

This reverts commit 3a366e614d0837d9fc23f78cdb1a1186ebc3387f.

Wanlong Gao reports that it causes a kernel panic on his machine several
minutes after boot. Reverting it removes the panic.

Jens says:
 "It's not quite clear why that is yet, so I think we should just revert
  the commit for 3.9 final (which I'm assuming is pretty close).

  The wifi is crap at the LSF hotel, so sending this email instead of
  queueing up a revert and pull request."

Reported-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Requested-by: Jens Axboe <axboe@kernel.dk>
Cc: Tejun Heo <tj@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agox86, hyperv: Handle Xen emulation of Hyper-V more gracefully
K. Y. Srinivasan [Thu, 18 Apr 2013 15:44:46 +0000 (08:44 -0700)]
x86, hyperv: Handle Xen emulation of Hyper-V more gracefully

Install the Hyper-V specific interrupt handler only when needed. This would
permit us to get rid of the Xen check. Note that when the vmbus drivers invokes
the call to register its handler, we are sure to be running on Hyper-V.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Link: http://lkml.kernel.org/r/1366299886-6399-1-git-send-email-kys@microsoft.com
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
11 years agokprobes: Fix a double lock bug of kprobe_mutex
Masami Hiramatsu [Thu, 18 Apr 2013 09:33:18 +0000 (18:33 +0900)]
kprobes: Fix a double lock bug of kprobe_mutex

Fix a double locking bug caused when debug.kprobe-optimization=0.
While the proc_kprobes_optimization_handler locks kprobe_mutex,
wait_for_kprobe_optimizer locks it again and that causes a double lock.
To fix the bug, this introduces different mutex for protecting
sysctl parameter and locks it in proc_kprobes_optimization_handler.
Of course, since we need to lock kprobe_mutex when touching kprobes
resources, that is done in *optimize_all_kprobes().

This bug was introduced by commit ad72b3bea744 ("kprobes: fix
wait_for_kprobe_optimizer()")

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agodmaengine: at_hdmac: fix race condition in atc_advance_work()
Ludovic Desroches [Thu, 18 Apr 2013 07:52:59 +0000 (09:52 +0200)]
dmaengine: at_hdmac: fix race condition in atc_advance_work()

The BUG_ON() directive is triggered probably due to a latency
modification following inclusion of commit c10d73671ad3 ("softirq:
reduce latencies").  This condition has not been met before 3.9-rc1 and
doesn't trigger without this patch.

We now make sure that DMA channel is idle before calling
atc_complete_all() which makes the BUG_ON() "protection" useless.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch
David S. Miller [Thu, 18 Apr 2013 04:20:57 +0000 (00:20 -0400)]
Merge branch 'fixes' of git://git./linux/kernel/git/jesse/openvswitch

Jesse Gross says:

====================
Two small bug fixes for net/3.9 including the issue previously
discussed where allocation of netlink notifications can fail after
changes have been committed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Linus Torvalds [Wed, 17 Apr 2013 23:12:43 +0000 (16:12 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux

Pull idle patches from Len Brown:
 "A pair of small patches for 3.9-rc7.

  This CPU-id should have been included in the ones that we updated
  earlier in 3.9.  This pair of patches will allow this flavor of
  Haswell to behave like the other flavors."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: additional Haswell CPU-id
  intel_idle: additional Haswell CPU-id

11 years agoMerge branch 'akpm' (fixes from Andrew)
Linus Torvalds [Wed, 17 Apr 2013 23:11:09 +0000 (16:11 -0700)]
Merge branch 'akpm' (fixes from Andrew)

Pull misc fixes from Andrew Morton:
 "Ten fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  kernel/signal.c: stop info leak via the tkill and the tgkill syscalls
  mm/vmscan: fix error return in kswapd_run()
  hfsplus: fix potential overflow in hfsplus_file_truncate()
  avr32: fix build error in atstk1006_defconfig
  hugetlbfs: add swap entry check in follow_hugetlb_page()
  fs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()
  hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)
  checkpatch: fix stringification macro defect
  drivers/video/mmp/core.c: fix use-after-free bug
  thinkpad-acpi: kill hotkey_thread_mutex

11 years agokernel/signal.c: stop info leak via the tkill and the tgkill syscalls
Emese Revfy [Wed, 17 Apr 2013 22:58:36 +0000 (15:58 -0700)]
kernel/signal.c: stop info leak via the tkill and the tgkill syscalls

This fixes a kernel memory contents leak via the tkill and tgkill syscalls
for compat processes.

This is visible in the siginfo_t->_sifields._rt.si_sigval.sival_ptr field
when handling signals delivered from tkill.

The place of the infoleak:

int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
{
        ...
        put_user_ex(ptr_to_compat(from->si_ptr), &to->si_ptr);
        ...
}

Signed-off-by: Emese Revfy <re.emese@gmail.com>
Reviewed-by: PaX Team <pageexec@freemail.hu>
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Serge Hallyn <serge.hallyn@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agomm/vmscan: fix error return in kswapd_run()
Xishi Qiu [Wed, 17 Apr 2013 22:58:34 +0000 (15:58 -0700)]
mm/vmscan: fix error return in kswapd_run()

Fix the error return value in kswapd_run().  The bug was introduced by
commit d5dc0ad928fb ("mm/vmscan: fix error number for failed kthread").

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agohfsplus: fix potential overflow in hfsplus_file_truncate()
Vyacheslav Dubeyko [Wed, 17 Apr 2013 22:58:33 +0000 (15:58 -0700)]
hfsplus: fix potential overflow in hfsplus_file_truncate()

Change a u32 to loff_t hfsplus_file_truncate().

Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoavr32: fix build error in atstk1006_defconfig
Josh Wu [Wed, 17 Apr 2013 22:58:31 +0000 (15:58 -0700)]
avr32: fix build error in atstk1006_defconfig

fixed the following compile error when use avr32 atstk1006_defconfig:

  drivers/mtd/nand/atmel_nand.c: In function 'pmecc_err_location':
  drivers/mtd/nand/atmel_nand.c:639: error: implicit declaration of function 'writel_relaxed'

which was introduced by commit 1c7b874d33b4 ("mtd: at91: atmel_nand: add
Programmable Multibit ECC controller support").  The PMECC for nand
flash code uses writel_relaxed().  But in avr32, there is no macro
"writel_relaxed" defined.

This patch add writex_relaxed macro definitions.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Havard Skinnemoen <havard@skinnemoen.net>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: David Woodhouse <David.Woodhouse@intel.com>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agohugetlbfs: add swap entry check in follow_hugetlb_page()
Naoya Horiguchi [Wed, 17 Apr 2013 22:58:30 +0000 (15:58 -0700)]
hugetlbfs: add swap entry check in follow_hugetlb_page()

With applying the previous patch "hugetlbfs: stop setting VM_DONTDUMP in
initializing vma(VM_HUGETLB)" to reenable hugepage coredump, if a memory
error happens on a hugepage and the affected processes try to access the
error hugepage, we hit VM_BUG_ON(atomic_read(&page->_count) <= 0) in
get_page().

The reason for this bug is that coredump-related code doesn't recognise
"hugepage hwpoison entry" with which a pmd entry is replaced when a memory
error occurs on a hugepage.

In other words, physical address information is stored in different bit
layout between hugepage hwpoison entry and pmd entry, so
follow_hugetlb_page() which is called in get_dump_page() returns a wrong
page from a given address.

The expected behavior is like this:

  absent   is_swap_pte   FOLL_DUMP   Expected behavior
  -------------------------------------------------------------------
   true     false         false       hugetlb_fault
   false    true          false       hugetlb_fault
   false    false         false       return page
   true     false         true        skip page (to avoid allocation)
   false    true          true        hugetlb_fault
   false    false         true        return page

With this patch, we can call hugetlb_fault() and take proper actions (we
wait for migration entries, fail with VM_FAULT_HWPOISON_LARGE for
hwpoisoned entries,) and as the result we can dump all hugepages except
for hwpoisoned ones.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [2.6.34+?]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agofs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()
Naoya Horiguchi [Wed, 17 Apr 2013 22:58:28 +0000 (15:58 -0700)]
fs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size()

Documentation/filesystems/proc.txt says about coredump_filter bitmask,

  Note bit 0-4 doesn't effect any hugetlb memory. hugetlb memory are only
  effected by bit 5-6.

However current code can go into the subsequent flag checks of bit 0-4
for vma(VM_HUGETLB). So this patch inserts 'return' and makes it work
as written in the document.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [3.7+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agohugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)
Naoya Horiguchi [Wed, 17 Apr 2013 22:58:27 +0000 (15:58 -0700)]
hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)

Currently we fail to include any data on hugepages into coredump,
because VM_DONTDUMP is set on hugetlbfs's vma.  This behavior was
recently introduced by commit 314e51b9851b ("mm: kill vma flag
VM_RESERVED and mm->reserved_vm counter").

This looks to me a serious regression, so let's fix it.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [3.7+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agocheckpatch: fix stringification macro defect
Joe Perches [Wed, 17 Apr 2013 22:58:26 +0000 (15:58 -0700)]
checkpatch: fix stringification macro defect

Fix checkpatch misreporting defect with stringification macros

ERROR: Macros with complex values should be enclosed in parenthesis
  #27: FILE: arch/arm/include/asm/kgdb.h:41:
  +#define ___to_string(X) #X

Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Vincent Stehlé <v-stehle@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agodrivers/video/mmp/core.c: fix use-after-free bug
Andrei Epure [Wed, 17 Apr 2013 22:58:24 +0000 (15:58 -0700)]
drivers/video/mmp/core.c: fix use-after-free bug

Found with coccinelle.

Signed-off-by: Andrei Epure <epure.andrei@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agothinkpad-acpi: kill hotkey_thread_mutex
Oleg Nesterov [Wed, 17 Apr 2013 22:58:23 +0000 (15:58 -0700)]
thinkpad-acpi: kill hotkey_thread_mutex

hotkey_kthread() does try_to_freeze() under hotkey_thread_mutex.

We can simply kill this mutex, hotkey_poll_stop_sync() does not need to
serialize with hotkey_kthread().  When kthread_stop() returns the thread
is already dead, it called do_exit()->complete_vfork_done().

Reported-by: Artem Savkov <artem.savkov@gmail.com>
Reported-by: Maciej Rutecki <maciej.rutecki@gmail.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Reviewed-by: Mandeep Singh Baines <msb@chromium.org>
Cc: Aaron Lu <aaron.lu@intel.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agobatman-adv: make is_my_mac() check for the current mesh only
Antonio Quartulli [Wed, 3 Apr 2013 17:10:26 +0000 (19:10 +0200)]
batman-adv: make is_my_mac() check for the current mesh only

On a multi-mesh node (a node running more than one batman-adv
virtual interface) batadv_is_my_mac() has to check MAC
addresses of hard interfaces belonging to the current mesh
only.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Wed, 17 Apr 2013 19:52:02 +0000 (12:52 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

Pull Ceph fix from Sage Weil:
 "It's a simple fix for a hard to hit race, but low-risk and clearly
  correct"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  rbd: do a safe list traversal in rbd_img_request_submit()

11 years agoARM: KVM: fix unbalanced get_cpu() in access_dcsw
Marc Zyngier [Wed, 17 Apr 2013 19:09:09 +0000 (12:09 -0700)]
ARM: KVM: fix unbalanced get_cpu() in access_dcsw

In the very unlikely event where a guest would be foolish enough to
*read* from a write-only cache maintainance register, we end up
with preemption disabled, due to a misplaced get_cpu().

Just move the "is_write" test outside of the critical section.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>