The cgroup iterators yield css objects that have not yet gone through
css_online(), but they are not complete memcgs at this point and so the
memcg iterators should not return them.  Commit d8ad3055 ("mm/memcg:
iteration skip memcgs not yet fully initialized") set out to implement
exactly this, but it uses CSS_ONLINE, a cgroup-internal flag that does
not meet the ordering requirements for memcg, and so the iterator may
skip over initialized groups, or return partially initialized memcgs.

The cgroup core can not reasonably provide a clear answer on whether the
object around the css has been fully initialized, as that depends on
controller-specific locking and lifetime rules.  Thus, introduce a
memcg-specific flag that is set after the memcg has been initialized in
css_online(), and read before mem_cgroup_iter() callers access the memcg
members.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: <stable@vger.kernel.org>	[3.12+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

In dlm_assert_master_handler, the mle is get in dlm_find_mle, should be
put when goto kill, otherwise, this mle will never be released.
Signed-off-by: Alex Chen <alex.chen@huawei.com>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Reviewed-by: joyce.xue <xuejiufei@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull sound fixes from Takashi Iwai:
 "Just a few pending bits of random fixes in ASoC.  Nothing exciting,
  but would be nice to be merged in 3.17, as most of them are also for
  stable kernels"

* tag 'sound-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: ssm2602: do not hardcode type to SSM2602
  ASoC: core: fix possible ZERO_SIZE_PTR pointer dereferencing error.
  MAINTAINERS: add atmel audio alsa driver maintainer entry
  ASoC: rt286: Fix sync function
  ASoC: rt286: Correct default value
  ASoC: soc-compress: fix double unlock of fe card mutex
  ASoC: fsl_ssi: fix kernel panic in probe function

Pull networking fixes from David Miller:

 1) Don't halt the firmware in r8152 driver, from Hayes Wang.

 2) Handle full sized 802.1ad frames in bnx2 and tg3 drivers properly,
    from Vlad Yasevich.

 3) Don't sleep while holding tx_clean_lock in netxen driver, fix from
    Manish Chopra.

 4) Certain kinds of ipv6 routes can end up endlessly failing the route
    validation test, causing it to be re-looked up over and over again.
    This particularly kills input route caching in TCP sockets.  Fix
    from Hannes Frederic Sowa.

 5) netvsc_start_xmit() has a use-after-free access to skb->len, fix
    from K Y Srinivasan.

 6) Fix matching of inverted containers in ematch module, from Ignacy
    Gawędzki.

 7) Aggregation of GRO frames via SKB ->frag_list for linear skbs isn't
    handled properly, regression fix from Eric Dumazet.

 8) Don't test return value of ipv4_neigh_lookup(), which returns an
    error pointer, against NULL.  From WANG Cong.

 9) Fix an old regression where we mistakenly allow a double add of the
    same tunnel.  Fixes from Steffen Klassert.

10) macvtap device delete and open can run in parallel and corrupt lists
    etc., fix from Vlad Yasevich.

11) Fix build error with IPV6=m NETFILTER_XT_TARGET_TPROXY=y, from Pablo
    Neira Ayuso.

12) rhashtable_destroy() triggers lockdep splats, fix also from Pablo.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (32 commits)
  bna: Update Maintainer Email
  r8152: disable power cut for RTL8153
  r8152: remove clearing bp
  bnx2: Correctly receive full sized 802.1ad fragmes
  tg3: Allow for recieve of full-size 8021AD frames
  r8152: fix setting RTL8152_UNPLUG
  netxen: Fix bug in Tx completion path.
  netxen: Fix BUG "sleeping function called from invalid context"
  ipv6: remove rt6i_genid
  hyperv: Fix a bug in netvsc_start_xmit()
  net: stmmac: fix stmmac_pci_probe failed when CONFIG_HAVE_CLK is selected
  ematch: Fix matching of inverted containers.
  gro: fix aggregation for skb using frag_list
  neigh: check error pointer instead of NULL for ipv4_neigh_lookup()
  ip6_gre: Return an error when adding an existing tunnel.
  ip6_vti: Return an error when adding an existing tunnel.
  ip6_tunnel: Return an error when adding an existing tunnel.
  ip6gre: add a rtnl link alias for ip6gretap
  net/mlx4_core: Allow not to specify probe_vf in SRIOV IB mode
  r8152: fix the carrier off when autoresuming
  ...

Update the maintainer email for BNA driver.
Signed-off-by: Rasesh Mody <rasesh.mody@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Hayes Wang says:

====================
r8152: patches about firmware

The patches fix the issues when the firmware exists.

For the multiple OS, the firmware may be loaded by the
driver of the other OS. And the Linux driver has influences
on it.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

The firmware would be clear when the power cut is enabled for
RTL8153.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The xxx_clear_bp() is used to halt the firmware. It only necessary
for updating the new firmware. Besides, depend on the version of
the current firmware, it may have problem to halt the firmware
directly. Finally, halt the firmware would let the firmware code
useless, and the bugs which are fixed by the firmware would occur.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This driver, similar to tg3, has a check that will
cause full sized 802.1ad frames to be dropped.  The
frame will be larger then the standard mtu due to the
presense of vlan header that has not been stripped.
The driver should not drop this frame and should process
it just like it does for 802.1q.

CC: Sony Chacko <sony.chacko@qlogic.com>
CC: Dept-HSGLinuxNICDev@qlogic.com
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When receiving a vlan-tagged frame that still contains
a vlan header, the length of the packet will be greater
then MTU+ETH_HLEN since it will account of the extra
vlan header.  TG3 checks this for the case for 802.1Q,
but not for 802.1ad.  As a result, full sized 802.1ad
frames get dropped by the card.

Add a check for 802.1ad protocol when receving full
sized frames.
Suggested-by: Prashant Sreedharan <prashant@broadcom.com>
CC: Prashant Sreedharan <prashant@broadcom.com>
CC: Michael Chan <mchan@broadcom.com>
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull nfsd bugfix from Bruce Fields:
 "This fixes a data corruption bug introduced by the v3.16 xdr encoding
  rewrite.  I haven't managed to reproduce it myself yet, but it's
  apparently not hard to hit given the right workload"

* 'for-3.17' of git://linux-nfs.org/~bfields/linux:
  nfsd4: fix corruption of NFSv4 read data

Merge tag 'asoc-v3.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fix SSM2602 device identification

Another fix for v3.17, fixing device identification after the split out
of the I2C and SPI code.

Pull ARM fixes from Russell King:
 "Some further ARM fixes:
   - another build fix for the kprobes test code
   - a fix for no kuser helpers for the set_tls code, which oopsed on
     noMMU hardware
   - a fix for alignment handler with neon opcodes being misinterpreted
   - turning off the hardware access support, which is not implemented
   - a build fix for the v7 coherency exiting code, which can be built
     in non-v7 environments (but still only executed on v7 CPUs)"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8179/1: kprobes-test: Fix compile error "bad immediate value for offset"
  ARM: 8178/1: fix set_tls for !CONFIG_KUSER_HELPERS
  ARM: 8177/1: cacheflush: Fix v7_exit_coherency_flush exynos build breakage on ARMv6
  ARM: 8165/1: alignment: don't break misaligned NEON load/store
  ARM: 8164/1: mm: clear SCTLR.HA instead of setting it for LPAE

The flag of RTL8152_UNPLUG should only be set when the device is
unplugged, not each time the rtl8152_disconnect() is called.
Otherwise, the device wouldn't be stopped normally.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Manish Chopra says:

====================
netxen: Bug fixes.

This series fixes some TX specific issues.
* Move spin_lock(tx_clean_lock) in down path to fix
  atomic sleep bug (Reported by Mike Galbraith).
* Fix hang in interface down while running traffic.

Please consider applying this to 'net'.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

o Driver is not updating sw_consumer while processing Tx completion
  when interface is going down. Due to this interface down path gets
  stuck forever waiting for NAPI to complete.
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

o __netxen_nic_down() function might sleep while holding spinlock_t(tx_clean_lock).
  Acquire this lock for only releasing TX buffers instead of taking it
  for whole down path.
Reported-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The calculation of page_ptr here is wrong in the case the read doesn't
start at an offset that is a multiple of a page.

The result is that nfs4svc_encode_compoundres sets rq_next_page to a
value one too small, and then the loop in svc_free_res_pages may
incorrectly fail to clear a page pointer in rq_respages[].

Pages left in rq_respages[] are available for the next rpc request to
use, so xdr data may be written to that page, which may hold data still
waiting to be transmitted to the client or data in the page cache.

The observed result was silent data corruption seen on an NFSv4 client.

We tag this as "fixing" 05638dc7 because that commit exposed this
bug, though the incorrect calculation predates it.

Particular thanks to Andrea Arcangeli and David Gilbert for analysis and
testing.

Fixes: 05638dc7 "nfsd4: simplify server xdr->next_page use"
Cc: stable@vger.kernel.org
Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Tested-by: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

Eric Dumazet noticed that all no-nonexthop or no-gateway routes which
are already marked DST_HOST (e.g. input routes routes) will always be
invalidated during sk_dst_check. Thus per-socket dst caching absolutely
had no effect and early demuxing had no effect.

Thus this patch removes rt6i_genid: fn_sernum already gets modified during
add operations, so we only must ensure we mutate fn_sernum during ipv6
address remove operations. This is a fairly cost extensive operations,
but address removal should not happen that often. Also our mtu update
functions do the same and we heard no complains so far. xfrm policy
changes also cause a call into fib6_flush_trees. Also plug a hole in
rt6_info (no cacheline changes).

I verified via tracing that this change has effect.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: YOSHIFUJI Hideaki <hideaki@yoshifuji.org>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Cc: Martin Lau <kafai@fb.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

When compiling kprobes-test-arm.c the following error has been observed

/tmp/ccoT403o.s:21439: Error: bad immediate value for offset (4168)

This is caused by the compiler spilling it's literal pool too far away
from the site which is trying to reference it with a PC relative load.
This arises because the compiler is underestimating the size of the
inline assembler code present, which apparently it approximates as 4
bytes per line or instruction.

We fix this problem by moving the operations which generate more than
4 bytes out of the text section. Specifically, moving the .ascii
directives to the .rodata section.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Joachim Eastwood reports that commit fbfb872f "ARM: 8148/1: flush
TLS and thumbee register state during exec" causes a boot-time crash
on a Cortex-M4 nommu system:

Freeing unused kernel memory: 68K (281e5000 - 281f6000)
Unhandled exception: IPSR = 00000005 LR = fffffff1
CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-rc6-00313-gd2205fa30aa7 #191
task: 29834000 ti: 29832000 task.ti: 29832000
PC is at flush_thread+0x2e/0x40
LR is at flush_thread+0x21/0x40
pc : [<2800954a>] lr : [<2800953d>] psr: 4100000b
sp : 29833d60 ip : 00000000 fp : 00000001
r10: 00003cf8 r9 : 29b1f000 r8 : 00000000
r7 : 29b0bc00 r6 : 29834000 r5 : 29832000 r4 : 29832000
r3 : ffff0ff0 r2 : 29832000 r1 : 00000000 r0 : 282121f0
xPSR: 4100000b
CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-rc6-00313-gd2205fa30aa7 #191
[<2800afa5>] (unwind_backtrace) from [<2800a327>] (show_stack+0xb/0xc)
[<2800a327>] (show_stack) from [<2800a963>] (__invalid_entry+0x4b/0x4c)

The problem is that set_tls is attempting to clear the TLS location in
the kernel-user helper page, which isn't set up on V7M.

Fix this by guarding the write to the kuser helper page with
a CONFIG_KUSER_HELPERS ifdef.

Fixes: fbfb872f ARM: 8148/1: flush TLS and thumbee register state during exec
Reported-by: Joachim Eastwood <manabian@gmail.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

This fixes build breakage of platsmp.c if ARMv6 was chosen for compile
time options (e.g. by building allmodconfig):

$ make allmodconfig
$ make
  CC      arch/arm/mach-exynos/platsmp.o
/tmp/ccdQM0Eg.s: Assembler messages:
/tmp/ccdQM0Eg.s:432: Error: selected processor does not support ARM mode `isb '
/tmp/ccdQM0Eg.s:437: Error: selected processor does not support ARM mode `isb '
/tmp/ccdQM0Eg.s:438: Error: selected processor does not support ARM mode `dsb '
make[1]: *** [arch/arm/mach-exynos/platsmp.o] Error 1

The error was introduced in commit "ARM: EXYNOS: Move code from
hotplug.c to platsmp.c".  Previously code using
v7_exit_coherency_flush() macro was built with '-march=armv7-a' flag but
this flag dissapeared during the movement.

Fix this by annotating the v7_exit_coherency_flush() asm code with
armv7-a architecture.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reported-by: Mark Brown <broonie@kernel.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

The correct type (SSM2602/SSM2603/SSM2604) is passed down
from the ssm2602_spi_probe()/ssm2602_spi_probe() functions,
so use that instead of hardcoding it to SSM2602 in
ssm2602_probe().

Fixes: c924dc68 ("ASoC: ssm2602: Split SPI and I2C code into different modules")
Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: stable@vger.kernel.org

Merge tag 'asoc-v3.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v3.17

A few small driver specific fixes and a couple of error handling fixes
in the core.

After the packet is successfully sent, we should not touch the skb
as it may have been freed. This patch is based on the work done by
Long Li <longli@microsoft.com>.

In this version of the patch I have fixed issues pointed out by David.
David, please queue this up for stable.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Tested-by: Long Li <longli@microsoft.com>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When the CONFIG_HAVE_CLK is selected for the system, the stmmac_pci_probe
will fail with dmesg:
[    2.167225] stmmaceth 0000:00:14.6: enabling device (0000 -> 0002)
[    2.178267] stmmaceth 0000:00:14.6: enabling bus mastering
[    2.178436] stmmaceth 0000:00:14.6: irq 24 for MSI/MSI-X
[    2.178703] stmmaceth 0000:00:14.6: stmmac_dvr_probe: warning: cannot
get CSR clock
[    2.186503] stmmac_pci_probe: main driver probe failed
[    2.194003] stmmaceth 0000:00:14.6: disabling bus mastering
[    2.196473] stmmaceth: probe of 0000:00:14.6 failed with error -2

This patch fix the issue by breaking the dependency to devm_clk_get()
as the CSR clock can be obtained at priv->plat->clk_csr from pci driver.
Reported-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Negated expressions and sub-expressions need to have their flags checked for
TCF_EM_INVERT and their result negated accordingly.
Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

In commit 8a29111c ("net: gro: allow to build full sized skb")
I added a regression for linear skb that traditionally force GRO
to use the frag_list fallback.

Erez Shitrit found that at most two segments were aggregated and
the "if (skb_gro_len(p) != pinfo->gso_size)" test was failing.

This is because pinfo at this spot still points to the last skb in the
chain, instead of the first one, where we find the correct gso_size
information.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 8a29111c ("net: gro: allow to build full sized skb")
Reported-by: Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fixes: commit f187bc6e ("ipv4: No need to set generic neighbour pointer")
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull slave-dmaengine fixes from Vinod Koul:
 "Two small fixes for omap dmaengine driver which fixes cyclic suspend
  and resume"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: omap-dma: Restore the CLINK_CTRL in resume path
  dmaengine: omap-dma: Add memory barrier to dma_resume path

Steffen Klassert says:

====================
ipv6: Return an error when adding an already existing tunnel

The ipv6 tunnel locate functions should not return an existing
tunnel if create is true. Otherwise it is possible to add the
same tunnel multiple times without getting an error.

All our ipv6 tunnels have this bug from the very beginning.
Only the sit tunnel was fixed some years ago with:

commit 8db99e57 ("sit: Fail to create tunnel, if it already exists").

This patchset fixes the remaining ipv6 tunnels.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

ip6gre_tunnel_locate() should not return an existing tunnel if
create is true. Otherwise it is possible to add the same
tunnel multiple times without getting an error.

So return NULL if the tunnel that should be created already
exists.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

vti6_locate() should not return an existing tunnel if
create is true. Otherwise it is possible to add the same
tunnel multiple times without getting an error.

So return NULL if the tunnel that should be created already
exists.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ip6_tnl_locate() should not return an existing tunnel if
create is true. Otherwise it is possible to add the same
tunnel multiple times without getting an error.

So return NULL if the tunnel that should be created already
exists.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge remote-tracking branches 'asoc/fix/atmel', 'asoc/fix/compress', 'asoc/fix/core', 'asoc/fix/fsl-ssi' and 'asoc/fix/rt286' into asoc-linus

Since we cannot make sure the 'params->num_regs' will always be none
zero here, and then if it equals to zero, the kmemdup() will return
ZERO_SIZE_PTR, which equals to ((void *)16).

So this patch fix this with just doing the zero check before calling
kmemdup().
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

Pull vfs fixes from Al Viro:
 "Assorted fixes + unifying __d_move() and __d_materialise_dentry() +
  minimal regression fix for d_path() of victims of overwriting rename()
  ported on top of that"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  vfs: Don't exchange "short" filenames unconditionally.
  fold swapping ->d_name.hash into switch_names()
  fold unlocking the children into dentry_unlock_parents_for_move()
  kill __d_materialise_dentry()
  __d_materialise_dentry(): flip the order of arguments
  __d_move(): fold manipulations with ->d_child/->d_subdirs
  don't open-code d_rehash() in d_materialise_unique()
  pull rehashing and unlocking the target dentry into __d_materialise_dentry()
  ufs: deal with nfsd/iget races
  fuse: honour max_read and max_write in direct_io mode
  shmem: fix nlink for rename overwrite directory

Pull cgroup fixes from Tejun Heo:
 "This is quite late but these need to be backported anyway.

  This is the fix for a long-standing cpuset bug which existed from
  2009.  cpuset makes use of PF_SPREAD_{PAGE|SLAB} flags to modify the
  task's memory allocation behavior according to the settings of the
  cpuset it belongs to; unfortunately, when those flags have to be
  changed, cpuset did so directly even whlie the target task is running,
  which is obviously racy as task->flags may be modified by the task
  itself at any time.  This obscure bug manifested as corrupt
  PF_USED_MATH flag leading to a weird crash.

  The bug is fixed by moving the flag to task->atomic_flags.  The first
  two are prepatory ones to help defining atomic_flags accessors and the
  third one is the actual fix"

* 'for-3.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cpuset: PF_SPREAD_PAGE and PF_SPREAD_SLAB should be atomic flags
  sched: add macros to define bitops for task atomic flags
  sched: fix confusing PFA_NO_NEW_PRIVS constant