There is no check if netconsole is enabled current.
so when exec echo 1 > enabled;
the reference of net_device will increment always.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>
Acked-by: NFlavio Leitner <fbl@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The Bluetooth stack has internal connection handlers for all of the various
Bluetooth protocols, and unfortunately, they are currently lacking the LSM
hooks found in the core network stack's connection handlers.  I say
unfortunately, because this can cause problems for users who have have an
LSM enabled and are using certain Bluetooth devices.  See one problem
report below:

 * http://bugzilla.redhat.com/show_bug.cgi?id=741703

In order to keep things simple at this point in time, this patch fixes the
problem by cloning the parent socket's LSM attributes to the newly created
child socket.  If we decide we need a more elaborate LSM marking mechanism
for Bluetooth (I somewhat doubt this) we can always revisit this decision
in the future.
Reported-by: NJames M. Cape <jcape@ignore-your.tv>
Signed-off-by: NPaul Moore <pmoore@redhat.com>
Acked-by: NJames Morris <jmorris@namei.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

l2tp_xmit_skb() can leak one skb if skb_cow_head() returns an error.
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Need to cleanup bridge device timers and ports when being bridge
device is being removed via netlink.

This fixes the problem of observed when doing:
 ip link add br0 type bridge
 ip link set dev eth1 master br0
 ip link set br0 up
 ip link del br0

which would cause br0 to hang in unregister_netdev because
of leftover reference count.
Reported-by: NSridhar Samudrala <sri@us.ibm.com>
Signed-off-by: NStephen Hemminger <shemminger@vyatta.com>
Acked-by: NSridhar Samudrala <sri@us.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

x25_find_listener does not check that the amount of call user data given
in the skb is big enough in per-socket comparisons, hence buffer
overreads may occur.  Fix this by adding a check.
Signed-off-by: NMatthew Daley <mattjd@gmail.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Cc: stable <stable@kernel.org>
Acked-by: NAndrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are multiple locations in the X.25 packet layer where a skb is
assumed to be of at least a certain size and that all its data is
currently available at skb->data.  These assumptions are not checked,
hence buffer overreads may occur.  Use pskb_may_pull to check these
minimal size assumptions and ensure that data is available at skb->data
when necessary, as well as use skb_copy_bits where needed.
Signed-off-by: NMatthew Daley <mattjd@gmail.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Cc: stable <stable@kernel.org>
Acked-by: NAndrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

X.25 call user data is being copied in its entirety from incoming messages
without consideration to the size of the destination buffers, leading to
possible buffer overflows. Validate incoming call user data lengths before
these copies are performed.

It appears this issue was noticed some time ago, however nothing seemed to
come of it: see http://www.spinics.net/lists/linux-x25/msg00043.html and
commit 8db09f26.
Signed-off-by: NMatthew Daley <mattjd@gmail.com>
Acked-by: NEric Dumazet <eric.dumazet@gmail.com>
Tested-by: NAndrew Hendry <andrew.hendry@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Commit 903ab86d of 1 March this year ("udp: Add
lockless transmit path") introduced a new fast TX path that broke the checksum
coverage computation of UDP-lite, which so far depended on up->len (only set
if the socket is locked and 0 in the fast path).

Fixed by providing both fast- and slow-path computation of checksum coverage.
The latter can be removed when UDP(-lite)v6 also uses a lockless transmit path.
Reported-by: NThomas Volkert <thomas@homer-conferencing.com>
Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (w83627ehf) Properly report thermal diode sensors

* 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6:
  gpio-pca953x: fix gpio_base
  gpio/omap: fix build error with certain OMAP1 configs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: revert to using a kthread for AIL pushing
  xfs: force the log if we encounter pinned buffers in .iop_pushbuf
  xfs: do not update xa_last_pushed_lsn for locked items

* 'stable' of git://github.com/cmetcalf-tilera/linux-tile:
  tile: revert change from <asm/atomic.h> to <linux/atomic.h> in asm files

* 'x86-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
  x86: Default to vsyscall=native for now

SFI tables reside in RAM and should not be modified once they are
written.  Current code went to set pentry->irq to zero which causes
subsequent reads to fail with invalid SFI table checksum.  This will
break kexec as the second kernel fails to validate SFI tables.

To fix this we use temporary variable for irq number.
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The w83627ehf driver is improperly reporting thermal diode sensors as
type 2, instead of 3. This caused "sensors" and possibly other
monitoring tools to report these sensors as "transistor" instead of
"thermal diode".

Furthermore, diode subtype selection (CPU vs. external) is only
supported by the original W83627EHF/EHG. All later models only support
CPU diode type, and some (NCT6776F) don't even have the register in
question so we should avoid reading from it.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

gpio_base was set to 0 if no system platform data or open firmware
platform data was provided. This led to conflicts, if any other gpiochip
with a gpiobase of 0 was instantiated already. Setting it to -1 will
automatically use the first one available.
Signed-off-by: NHartmut Knaack <knaack.h@gmx.de>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

With commit f64ad1a0, "gpio/omap: cleanup _set_gpio_wakeup(), remove
ifdefs", access to build time conditionally omitted 'suspend_wakeup'
member of the 'gpio_bank' structure has been placed unconditionally in
function _set_gpio_wakeup(), which is always built. This resulted in the
driver compilation broken for certain OMAP1, i.e., non-OMAP16xx,
configurations.

Really required or not in previously excluded cases, define this
structure member unconditionally as a fix.

Tested with a custom OMAP1510 only configuration.
Signed-off-by: NJanusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Acked-by: NKevin Hilman <khilman@ti.com>
Tested-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

The 32-bit TILEPro support uses some #defines in <asm/atomic_32.h>
for atomic support routines in assembly.  To make this more explicit,
I've turned those includes into includes of <asm/atomic_32.h>, which
should hopefully make it clear that they shouldn't be bombed into
<linux/atomic.h> in any cleanups.
Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  mscan: too much data copied to CAN frame due to 16 bit accesses
  gro: refetch inet6_protos[] after pulling ext headers
  bnx2x: fix cl_id allocation for non-eth clients for NPAR mode
  mlx4_en: fix endianness with blue frame support

Fix file references in drivers/ide/

There are a lot of file references to now moved or deleted files in the
whole tree, especially in documentation and Kconfig files.  This patch
fixes the references in drivers/ide/.
Signed-off-by: NJohann Felix Soden <johfel@users.sourceforge.net>
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'btrfs-3.0' of git://github.com/chrismason/linux:
  Btrfs: make sure not to defrag extents past i_size
  Btrfs: fix recursive auto-defrag

ip_vs_mutext is used by both netns shutdown code and startup
and both implicit uses sk_lock-AF_INET mutex.

cleanup CPU-1         startup CPU-2
ip_vs_dst_event()     ip_vs_genl_set_cmd()
 sk_lock-AF_INET     __ip_vs_mutex
                     sk_lock-AF_INET
__ip_vs_mutex
* DEAD LOCK *

A new mutex placed in ip_vs netns struct called sync_mutex is added.

Comments from Julian and Simon added.
This patch has been running for more than 3 month now and it seems to work.

Ver. 3
    IP_VS_SO_GET_DAEMON in do_ip_vs_get_ctl protected by sync_mutex
    instead of __ip_vs_mutex as sugested by Julian.
Signed-off-by: NHans Schillstrom <hans@schillstrom.com>
Acked-by: NJulian Anastasov <ja@ssi.bg>
Signed-off-by: NSimon Horman <horms@verge.net.au>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>

Currently we have a few issues with the way the workqueue code is used to
implement AIL pushing:

 - it accidentally uses the same workqueue as the syncer action, and thus
   can be prevented from running if there are enough sync actions active
   in the system.
 - it doesn't use the HIGHPRI flag to queue at the head of the queue of
   work items

At this point I'm not confident enough in getting all the workqueue flags and
tweaks right to provide a perfectly reliable execution context for AIL
pushing, which is the most important piece in XFS to make forward progress
when the log fills.

Revert back to use a kthread per filesystem which fixes all the above issues
at the cost of having a task struct and stack around for each mounted
filesystem.  In addition this also gives us much better ways to diagnose
any issues involving hung AIL pushing and removes a small amount of code.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reported-by: NStefan Priebe <s.priebe@profihost.ag>
Tested-by: NStefan Priebe <s.priebe@profihost.ag>
Reviewed-by: NDave Chinner <dchinner@redhat.com>
Signed-off-by: NAlex Elder <aelder@sgi.com>

We need to check for pinned buffers even in .iop_pushbuf given that inode
items flush into the same buffers that may be pinned directly due operations
on the unlinked inode list operating directly on buffers.  To do this add a
return value to .iop_pushbuf that tells the AIL push about this and use
the existing log force mechanisms to unpin it.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reported-by: NStefan Priebe <s.priebe@profihost.ag>
Tested-by: NStefan Priebe <s.priebe@profihost.ag>
Reviewed-by: NDave Chinner <dchinner@redhat.com>
Signed-off-by: NAlex Elder <aelder@sgi.com>

If an item was locked we should not update xa_last_pushed_lsn and thus skip
it when restarting the AIL scan as we need to be able to lock and write it
out as soon as possible.  Otherwise heavy lock contention might starve AIL
pushing too easily, especially given the larger backoff once we moved
xa_last_pushed_lsn all the way to the target lsn.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reported-by: NStefan Priebe <s.priebe@profihost.ag>
Tested-by: NStefan Priebe <s.priebe@profihost.ag>
Reviewed-by: NDave Chinner <dchinner@redhat.com>
Signed-off-by: NAlex Elder <aelder@sgi.com>

The btrfs file defrag code will loop through the extents and
force COW on them.  But there is a concurrent truncate in the middle of
the defrag, it might end up defragging the same range over and over
again.

The problem is that writepage won't go through and do anything on pages
past i_size, so the cow won't happen, so the file will appear to still
be fragmented.  defrag will end up hitting the same extents again and
again.

In the worst case, the truncate can actually live lock with the defrag
because the defrag keeps creating new ordered extents which the truncate
code keeps waiting on.

The fix here is to make defrag check for i_size inside the main loop,
instead of just once before the looping starts.
Signed-off-by: NChris Mason <chris.mason@oracle.com>

This UML breakage:

  linux-2.6.30.1[3800] vsyscall fault (exploit attempt?) ip:ffffffffff600000 cs:33 sp:7fbfb9c498 ax:ffffffffff600000 si:0 di:606790
  linux-2.6.30.1[3856] vsyscall fault (exploit attempt?) ip:ffffffffff600000 cs:33 sp:7fbfb13168 ax:ffffffffff600000 si:0 di:606790

Is caused by commit 3ae36655 ("x86-64: Rework vsyscall emulation and add
vsyscall= parameter") - the vsyscall emulation code is not fully cooked
yet as UML relies on some rather fragile SIGSEGV semantics.

Linus suggested in https://lkml.org/lkml/2011/8/9/376 to default
to vsyscall=native for now, this patch implements that.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Acked-by: NAndrew Lutomirski <luto@mit.edu>
Cc: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/20111005214047.GE14406@localhost.pp.htv.fiSigned-off-by: NIngo Molnar <mingo@elte.hu>

Follow those steps:

  # mount -o autodefrag /dev/sda7 /mnt
  # dd if=/dev/urandom of=/mnt/tmp bs=200K count=1
  # sync
  # dd if=/dev/urandom of=/mnt/tmp bs=8K count=1 conv=notrunc

and then it'll go into a loop: writeback -> defrag -> writeback ...

It's because writeback writes [8K, 200K] and then writes [0, 8K].

I tried to make writeback know if the pages are dirtied by defrag,
but the patch was a bit intrusive. Here I simply set writeback_index
when we defrag a file.
Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com>
Signed-off-by: NChris Mason <chris.mason@oracle.com>

Due to the 16 bit access to mscan registers there's too much data copied to
the zero initialized CAN frame when having an odd number of bytes to copy.
This patch ensures that only the requested bytes are copied by using an
8 bit access for the remaining byte.
Reported-by: NAndre Naujoks <nautsch@gmail.com>
Signed-off-by: NOliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: NWolfgang Grandegger <wg@grandegger.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

ipv6_gro_receive() doesn't update the protocol ops after pulling
the ext headers. It looks like a typo.
Signed-off-by: NZheng Yan <zheng.z.yan@intel.com>
Acked-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are some consolidations of NPAR configuration
when FCoE and iSCSI L2 clients will get the same id,
in this case FCoE ring will be non-functional.
Signed-off-by: NDmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The doorbell register was being unconditionally swapped. In x86, that
meant it was being swapped to BE and written to the descriptor and to
memory, depending on the case of blue frame support or writing to
doorbell register. On PPC, this meant it was being swapped to LE and
then swapped back to BE while writing to the register. But in the blue
frame case, it was being written as LE to the descriptor.

The fix is not to swap doorbell unconditionally, write it to the
register as BE and convert it to BE when writing it to the descriptor.
Signed-off-by: NThadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Reported-by: NRichard Hendrickson <richhend@us.ibm.com>
Cc: Eli Cohen <eli@dev.mellanox.co.il>
Cc: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

* git://git.samba.org/sfrench/cifs-2.6:
  [CIFS] Fix first time message on mount, ntlmv2 upgrade delayed to 3.2

* 'fixes' of git://git.linaro.org/people/arnd/arm-soc:
  ARM: mach-ux500: enable fix for ARM errata 754322
  ARM: OMAP: musb: Remove a redundant omap4430_phy_init call in usb_musb_init
  ARM: OMAP: Fix i2c init for twl4030
  ARM: OMAP4: MMC: fix power and audio issue, decouple USBC1 from MMC1

This fixes a compilation error in cpu-tegra.c which was introduced in
dc8d966b ("ARM: convert PCI defines to variables") which removed the
now obsolete mach/hardware.h from the mach-tegra subtree.
Signed-off-by: NMarc Dietrich <marvin24@gmx.de>
Signed-off-by: NOlof Johansson <olof@lixom.net>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon/kms: use hardcoded dig encoder to transmitter mapping for DCE4.1
  drm/radeon/kms: fix dp_detect handling for DP bridge chips
  drm/radeon/kms: retry aux transactions if there are status flags

A couple of changes to the Tegra maintainership setup:

I'm very glad to bring on Stephen Warren on board as a maintainer. The
work he has done so far is excellent, and the fact that he works for
Nvidia means he has long-term interest in the platform.

Erik Gilling did an astounding amount of work on getting things up and
running but has been a silent partner on the maintainership side for a
while, and is stepping down. Thanks for your contributions so far, Erik.

Finally, update the git URL since I'll take over running the main repo
for a while.

Overall maintainership model isn't changing much at this time: We'll all
three review patches as appropriate, and one of us will collect the main
repo (me at this time).
Signed-off-by: NOlof Johansson <olof@lixom.net>
Cc: Erik Gilling <konkers@android.com>
Acked-by: NColin Cross <ccross@android.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (29 commits)
  MIPS: Call oops_enter, oops_exit in die
  staging/octeon: Software should check the checksum of no tcp/udp packets
  MIPS: Octeon: Enable C0_UserLocal probing.
  MIPS: No branches in delay slots for huge pages in handle_tlbl
  MIPS: Don't clobber CP0_STATUS value for CONFIG_MIPS_MT_SMTC
  MIPS: Octeon: Select CONFIG_HOLES_IN_ZONE
  MIPS: PM: Use struct syscore_ops instead of sysdevs for PM (v2)
  MIPS: Compat: Use 32-bit wrapper for compat_sys_futex.
  MIPS: Do not use EXTRA_CFLAGS
  MIPS: Alchemy: DB1200: Disable cascade IRQ in handler
  SERIAL: Lantiq: Set timeout in uart_port
  MIPS: Lantiq: Fix setting the PCI bus speed on AR9
  MIPS: Lantiq: Fix external interrupt sources
  MIPS: tlbex: Fix build error in R3000 code.
  MIPS: Alchemy: Include Au1100 in PM code.
  MIPS: Alchemy: Fix typo in MAC0 registration
  MIPS: MSP71xx: Fix build error.
  MIPS: Handle __put_user() sleeping.
  MIPS: Allow forced irq threading
  MIPS: i8259: Mark cascade interrupt non-threaded
  ...