Pull workqueue fixes from Tejun Heo:
 "So, safe fixes my ass.

  Commit 8852aac2 ("workqueue: mod_delayed_work_on() shouldn't queue
  timer on 0 delay") had the side-effect of performing delayed_work
  sanity checks even when @delay is 0, which should be fine for any sane
  use cases.

  Unfortunately, megaraid was being overly ingenious.  It seemingly
  wanted to use cancel_delayed_work_sync() before cancel_work_sync() was
  introduced, but didn't want to waste the space for full delayed_work
  as it was only going to use 0 @delay.  So, it only allocated space for
  struct work_struct and then cast it to struct delayed_work and passed
  it into delayed_work functions - truly awesome engineering tradeoff to
  save some bytes.

  Xiaotian fixed it by making megraid allocate full delayed_work for
  now.  It should be converted to use work_struct and cancel_work_sync()
  but I think we better do that after 3.7.

  I added another commit to change BUG_ON()s in __queue_delayed_work()
  to WARN_ON_ONCE()s so that the kernel doesn't crash even if there are
  more such abuses."

* 'for-3.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: convert BUG_ON()s in __queue_delayed_work() to WARN_ON_ONCE()s
  megaraid: fix BUG_ON() from incorrect use of delayed work

Pull sparc fixes from David Miller:
 "Two small fixes for Sparc, nobody uses sparc, so these are low risk :-)

   1) Piggyback is too picky about the symbol types that _start and _end
      have in the final kernel image, and it thus breaks with newer
      binutils.  Future proof by getting rid of the symbol type checks.

   2) exit_group() should kill register windows on sparc64 the same way
      we do for plain exit().  Thanks to Al Viro for spotting this."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: Fix piggyback with newer binutils.
  sparc64: exit_group should kill register windows just like plain exit.

The block device access simplification that avoided accessing the (racy)
block size information (commit bbec0270

: "blkdev_max_block: make
private to fs/buffer.c") no longer checks the maximum block size in the
block mapping path.

That was _almost_ as simple as just removing the code entirely, because
the readers and writers all check the size of the device anyway, so
under normal circumstances it "just worked".

However, the block size may be such that the end of the device may
straddle one single buffer_head.  At which point we may still want to
access the end of the device, but the buffer we use to access it
partially extends past the end.

The 'bd_set_size()' function intentionally sets the block size to avoid
this, but mounting the device - or setting the block size by hand to
some other value - can modify that block size.

So instead, teach 'submit_bh()' about the special case of the buffer
head straddling the end of the device, and turning such an access into a
smaller IO access, avoiding the problem.

This, btw, also means that unlike before, we can now access the whole
device regardless of device block size setting.  So now, even if the
device size is only 512-byte aligned, we can read and write even the
last sector even when having a much bigger block size for accessing the
rest of the device.

So with this, we could now get rid of the 'bd_set_size()' block size
code entirely - resulting in faster IO for the common case - but that
would be a separate patch.

Reported-and-tested-by: Romain Francoise <romain@orebokech.com>
Reporeted-and-tested-by: Meelis Roos <mroos@linux.ee>
Reported-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8852aac2 ("workqueue: mod_delayed_work_on() shouldn't queue timer on
0 delay") unexpectedly uncovered a very nasty abuse of delayed_work in
megaraid - it allocated work_struct, casted it to delayed_work and
then pass that into queue_delayed_work().

Previously, this was okay because 0 @delay short-circuited to
queue_work() before doing anything with delayed_work.  8852aac2
moved 0 @delay test into __queue_delayed_work() after sanity check on
delayed_work making megaraid trigger BUG_ON().

Although megaraid is already fixed by c1d390d8

 ("megaraid: fix
BUG_ON() from incorrect use of delayed work"), this patch converts
BUG_ON()s in __queue_delayed_work() to WARN_ON_ONCE()s so that such
abusers, if there are more, trigger warning but don't crash the
machine.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Xiaotian Feng <xtfeng@gmail.com>

megaraid use INIT_WORK to declare a hotplug_work, but cast the
hotplug_work from work_struct to delayed_work and
schedule_delayed_work on it.  This is very dangerous, as other part of
delayed_work might be kernel memories allocated by others.

With commit 8852aac2

 ("workqueue: mod_delayed_work_on() shouldn't queue
timer on 0 delay"), schedule_delayed_work() will check dwork->timer
before queue_work even when @delay is 0, this causes megaraid code to
hit the BUG_ON() in workqueue code.  Change megaraid code to use
delayed work.

Signed-off-by: Xiaotian Feng <dannyfeng@tencent.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Neela Syam Kolli <megaraidlinux@lsi.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: linux-scsi@vger.kernel.org

Newer versions of binutils mark '_end' as 'B' instead of 'A' for
whatever reason.

To be honest, the piggyback code doesn't actually care what kind
of symbol _start and _end are, it just wants to find them and
record the address.

So remove the type from the match strings.

Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull EDAC fixes from Mauro Carvalho Chehab:
 "One EDAC core fix, and a few driver fixes (i7300, i9275x, i7core)."

* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
  i7core_edac: fix panic when accessing sysfs files
  i7300_edac: Fix error flag testing
  edac: Fix the dimm filling for csrows-based layouts
  i82975x_edac: Fix dimm label initialization

Pull media fixes from Mauro Carvalho Chehab:
 "Some driver fixes for s5p/exynos (mostly race fixes)"

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] s5p-mfc: Handle multi-frame input buffer
  [media] s5p-mfc: Bug fix of timestamp/timecode copy mechanism
  [media] exynos-gsc: Add missing video device vfl_dir flag initialization
  [media] exynos-gsc: Fix settings for input and output image RGB type
  [media] exynos-gsc: Don't use mutex_lock_interruptible() in device release()
  [media] fimc-lite: Don't use mutex_lock_interruptible() in device release()
  [media] s5p-fimc: Don't use mutex_lock_interruptible() in device release()
  [media] s5p-fimc: Prevent race conditions during subdevs registration

In commit 9d73fc2d

 ("open*(2) compat fixes (s390, arm64)") I said:
>
> 	The usual rules for open()/openat()/open_by_handle_at() are
> 1) native 32bit - don't force O_LARGEFILE in flags
> 2) native 64bit - force O_LARGEFILE in flags
> 3) compat on 64bit host - as for native 32bit
> 4) native 32bit ABI for 64bit system (mips/n32, x86/x32) - as for native 64bit
>
> There are only two exceptions - s390 compat has open() forcing O_LARGEFILE and
> arm64 compat has open_by_handle_at() doing the same thing.  The same binaries
> on native host (s390/31 and arm resp.) will *not* force O_LARGEFILE, so IMO
> both are emulation bugs.

Three exceptions, actually - parisc open() is another case like that.
Native 32bit won't force O_LARGEFILE, the same binary on parisc64 will.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

This reverts commit 800d4d30.

Between commits 8323f26c ("sched: Fix race in task_group()") and
800d4d30 ("sched, autogroup: Stop going ahead if autogroup is
disabled"), autogroup is a wreck.

With both applied, all you have to do to crash a box is disable
autogroup during boot up, then reboot..  boom, NULL pointer dereference
due to commit 800d4d30 not allowing autogroup to move things, and
commit 8323f26c

 making that the only way to switch runqueues:

  BUG: unable to handle kernel NULL pointer dereference at           (null)
  IP: [<ffffffff81063ac0>] effective_load.isra.43+0x50/0x90
  Pid: 7047, comm: systemd-user-se Not tainted 3.6.8-smp #7 MEDIONPC MS-7502/MS-7502
  RIP: effective_load.isra.43+0x50/0x90
  Process systemd-user-se (pid: 7047, threadinfo ffff880221dde000, task ffff88022618b3a0)
  Call Trace:
    select_task_rq_fair+0x255/0x780
    try_to_wake_up+0x156/0x2c0
    wake_up_state+0xb/0x10
    signal_wake_up+0x28/0x40
    complete_signal+0x1d6/0x250
    __send_signal+0x170/0x310
    send_signal+0x40/0x80
    do_send_sig_info+0x47/0x90
    group_send_sig_info+0x4a/0x70
    kill_pid_info+0x3a/0x60
    sys_kill+0x97/0x1a0
    ? vfs_read+0x120/0x160
    ? sys_read+0x45/0x90
    system_call_fastpath+0x16/0x1b
  Code: 49 0f af 41 50 31 d2 49 f7 f0 48 83 f8 01 48 0f 46 c6 48 2b 07 48 8b bf 40 01 00 00 48 85 ff 74 3a 45 31 c0 48 8b 8f 50 01 00 00 <48> 8b 11 4c 8b 89 80 00 00 00 49 89 d2 48 01 d0 45 8b 59 58 4c
  RIP  [<ffffffff81063ac0>] effective_load.isra.43+0x50/0x90
   RSP <ffff880221ddfbd8>
  CR2: 0000000000000000

Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Yong Zhang <yong.zhang0@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: stable@vger.kernel.org # 2.6.39+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge 'block-dev' branch.

I was going to just mark everything here for stable and leave it to the
3.8 merge window, but having decided on doing another -rc, I migth as
well merge it now.

This removes the bd_block_size_semaphore semaphore that was added in
this release to fix a race condition between block size changes and
block IO, and replaces it with atomicity guaratees in fs/buffer.c
instead, along with simplifying fs/block-dev.c.

This removes more lines than it adds, makes the code generally simpler,
and avoids the latency/rt issues that the block size semaphore
introduced for mount.

I'm not happy with the timing, but it wouldn't be much better doing this
during the merge window and then having some delayed back-port of it
into stable.

* block-dev:
  blkdev_max_block: make private to fs/buffer.c
  direct-io: don't read inode->i_blkbits multiple times
  blockdev: remove bd_block_size_semaphore again
  fs/buffer.c: make block-size be per-page and protected by the page lock

Pull networking fixes from David Miller:

 1) 8139cp leaks memory in error paths, from Francois Romieu.

 2) do_tcp_sendpages() cannot handle order > 0 pages, but they can
    certainly arrive there now, fix from Eric Dumazet.

 3) Race condition and sysfs fixes in bonding from Nikolay Aleksandrov.

 4) Remain-on-Channel fix in mac80211 from Felix Liao.

 5) CCK rate calculation fix in iwlwifi, from Emmanuel Grumbach.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  8139cp: fix coherent mapping leak in error path.
  tcp: fix crashes in do_tcp_sendpages()
  bonding: fix race condition in bonding_store_slaves_active
  bonding: make arp_ip_target parameter checks consistent with sysfs
  bonding: fix miimon and arp_interval delayed work race conditions
  mac80211: fix remain-on-channel (non-)cancelling
  iwlwifi: fix the basic CCK rates calculation

Pull md bugfix from NeilBrown:
 "Single bugfix for raid1/raid10.

  Fixes a recently introduced deadlock."

* tag 'md-3.7-fixes' of git://neil.brown.name/md:
  md/raid1{,0}: fix deadlock in bitmap_unplug.

The usual rules for open()/openat()/open_by_handle_at() are
 1) native 32bit - don't force O_LARGEFILE in flags
 2) native 64bit - force O_LARGEFILE in flags
 3) compat on 64bit host - as for native 32bit
 4) native 32bit ABI for 64bit system (mips/n32, x86/x32) - as for
    native 64bit

There are only two exceptions - s390 compat has open() forcing
O_LARGEFILE and arm64 compat has open_by_handle_at() doing the same
thing.  The same binaries on native host (s390/31 and arm resp.) will
*not* force O_LARGEFILE, so IMO both are emulation bugs.

Objections? The fix is obvious...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull  late workqueue fixes from Tejun Heo:
 "Unfortunately, I have two really late fixes.  One was for a
  long-standing bug and queued for 3.8 but I found out about a
  regression introduced during 3.7-rc1 two days ago, so I'm sending out
  the two fixes together.

  The first (long-standing) one is rescuer_thread() entering exit path
  w/ TASK_INTERRUPTIBLE.  It only triggers on workqueue destructions
  which isn't very frequent and the exit path can usually survive being
  called with TASK_INTERRUPT, so it was hidden pretty well.  Apparently,
  if you're reiserfs, this could lead to the exiting kthread sleeping
  indefinitely holding a mutex, which is never good.

  The fix is simple - restoring TASK_RUNNING before returning from the
  kthread function.

  The second one is introduced by the new mod_delayed_work().
  mod_delayed_work() was missing special case handling for 0 delay.
  Instead of queueing the work item immediately, it queued the timer
  which expires on the closest next tick.  Some users of the new
  function converted from "[__]cancel_delayed_work() +
  queue_delayed_work()" combination became unhappy with the extra delay.

  Block unplugging led to noticeably higher number of context switches
  and intel 6250 wireless failed to associate with WPA-Enterprise
  network.  The fix, again, is fairly simple.  The 0 delay special case
  logic from queue_delayed_work_on() should be moved to
  __queue_delayed_work() which is shared by both queue_delayed_work_on()
  and mod_delayed_work_on().

  The first one is difficult to trigger and the failure mode for the
  latter isn't completely catastrophic, so missing these two for 3.7
  wouldn't make it a disastrous release, but both bugs are nasty and the
  fixes are fairly safe"

* 'for-3.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: mod_delayed_work_on() shouldn't queue timer on 0 delay
  workqueue: exit rescuer_thread() as TASK_RUNNING

cp_open
[...]
        rc = cp_alloc_rings(cp);
        if (rc)
                return rc;

cp_alloc_rings
[...]
        mem = dma_alloc_coherent(&cp->pdev->dev, CP_RING_BYTES,
                                 &cp->ring_dma, GFP_KERNEL);

- cp_alloc_rings never frees the coherent mapping it allocates
- neither do cp_open when cp_alloc_rings fails

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Recent network changes allowed high order pages being used
for skb fragments.

This uncovered a bug in do_tcp_sendpages() which was assuming its caller
provided an array of order-0 page pointers.

We only have to deal with a single page in this function, and its order
is irrelevant.

Reported-by: Willy Tarreau <w@1wt.eu>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

8376fe22 ("workqueue: implement mod_delayed_work[_on]()")
implemented mod_delayed_work[_on]() using the improved
try_to_grab_pending().  The function is later used, among others, to
replace [__]candel_delayed_work() + queue_delayed_work() combinations.

Unfortunately, a delayed_work item w/ zero @delay is handled slightly
differently by mod_delayed_work_on() compared to
queue_delayed_work_on().  The latter skips timer altogether and
directly queues it using queue_work_on() while the former schedules
timer which will expire on the closest tick.  This means, when @delay
is zero, that [__]cancel_delayed_work() + queue_delayed_work_on()
makes the target item immediately executable while
mod_delayed_work_on() may induce delay of upto a full tick.

This somewhat subtle difference breaks some of the converted users.
e.g. block queue plugging uses delayed_work for deferred processing
and uses mod_delayed_work_on() when the queue needs to be immediately
unplugged.  The above problem manifested as noticeably higher number
of context switches under certain circumstances.

The difference in behavior was caused by missing special case handling
for 0 delay in mod_delayed_work_on() compared to
queue_delayed_work_on().  Joonsoo Kim posted a patch to add it -
("workqueue: optimize mod_delayed_work_on() when @delay == 0")[1].
The patch was queued for 3.8 but it was described as optimization and
I missed that it was a correctness issue.

As both queue_delayed_work_on() and mod_delayed_work_on() use
__queue_delayed_work() for queueing, it seems that the better approach
is to move the 0 delay special handling to the function instead of
duplicating it in mod_delayed_work_on().

Fix the problem by moving 0 delay special case handling from
queue_delayed_work_on() to __queue_delayed_work().  This replaces
Joonsoo's patch.

[1] http://thread.gmane.org/gmane.linux.kernel/1379011/focus=1379012



Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-tested-by: Anders Kaseorg <andersk@MIT.EDU>
Reported-and-tested-by: Zlatko Calusic <zlatko.calusic@iskon.hr>
LKML-Reference: <alpine.DEB.2.00.1211280953350.26602@dr-wily.mit.edu>
LKML-Reference: <50A78AA9.5040904@iskon.hr>
Cc: Joonsoo Kim <js1304@gmail.com>

A rescue thread exiting TASK_INTERRUPTIBLE can lead to a task scheduling
off, never to be seen again.  In the case where this occurred, an exiting
thread hit reiserfs homebrew conditional resched while holding a mutex,
bringing the box to its knees.

PID: 18105  TASK: ffff8807fd412180  CPU: 5   COMMAND: "kdmflush"
 #0 [ffff8808157e7670] schedule at ffffffff8143f489
 #1 [ffff8808157e77b8] reiserfs_get_block at ffffffffa038ab2d [reiserfs]
 #2 [ffff8808157e79a8] __block_write_begin at ffffffff8117fb14
 #3 [ffff8808157e7a98] reiserfs_write_begin at ffffffffa0388695 [reiserfs]
 #4 [ffff8808157e7ad8] generic_perform_write at ffffffff810ee9e2
 #5 [ffff8808157e7b58] generic_file_buffered_write at ffffffff810eeb41
 #6 [ffff8808157e7ba8] __generic_file_aio_write at ffffffff810f1a3a
 #7 [ffff8808157e7c58] generic_file_aio_write at ffffffff810f1c88
 #8 [ffff8808157e7cc8] do_sync_write at ffffffff8114f850
 #9 [ffff8808157e7dd8] do_acct_process at ffffffff810a268f
    [exception RIP: kernel_thread_helper]
    RIP: ffffffff8144a5c0  RSP: ffff8808157e7f58  RFLAGS: 00000202
    RAX: 0000000000000000  RBX: 0000000000000000  RCX: 0000000000000000
    RDX: 0000000000000000  RSI: ffffffff8107af60  RDI: ffff8803ee491d18
    RBP: 0000000000000000   R8: 0000000000000000   R9: 0000000000000000
    R10: 0000000000000000  R11: 0000000000000000  R12: 0000000000000000
    R13: 0000000000000000  R14: 0000000000000000  R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018

Signed-off-by: Mike Galbraith <mgalbraith@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org

Pull vfs fixes from Al Viro:
 "A bunch of fixes; the last one is this cycle regression, the rest are
  -stable fodder."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix off-by-one in argument passed by iterate_fd() to callbacks
  lookup_one_len: don't accept . and ..
  cifs: get rid of blind d_drop() in readdir
  nfs_lookup_revalidate(): fix a leak
  don't do blind d_drop() in nfs_prime_dcache()

Pull RCU fix from Ingo Molnar:
 "Fix leaking RCU extended quiescent state, which might trigger warnings
  and mess up the extended quiescent state tracking logic into thinking
  that we are in "RCU user mode" while we aren't."

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rcu: Fix unrecovered RCU user mode in syscall_trace_leave()

Pull perf fixes from Ingo Molnar:
 "This is mostly about unbreaking architectures that took the UAPI
  changes in the v3.7 cycle, plus misc fixes."

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf kvm: Fix building perf kvm on non x86 arches
  perf kvm: Rename perf_kvm to perf_kvm_stat
  perf: Make perf build for x86 with UAPI disintegration applied
  perf powerpc: Use uapi/unistd.h to fix build error
  tools: Pass the target in descend
  tools: Honour the O= flag when tool build called from a higher Makefile
  tools: Define a Makefile function to do subdir processing
  x86: Export asm/{svm.h,vmx.h,perf_regs.h}
  perf tools: Fix strbuf_addf() when the buffer needs to grow
  perf header: Fix numa topology printing
  perf, powerpc: Fix hw breakpoints returning -ENOSPC

Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

 - Don't build 'perf kvm stat" on non-x86 arches, fix from Xiao Guangrong.

 - UAPI fixes to get perf building again in non-x86 arches, from David Howells.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

Pull x86 fixes from Peter Anvin.

This includes the resume-time FPU corruption fix from the chromeos guys,
marked for stable.

* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, fpu: Avoid FPU lazy restore after suspend
  x86-32: Unbreak booting on some 486 clones
  x86, kvm: Remove incorrect redundant assembly constraint

Pull C6X fixes from Mark Salter.

* tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
  c6x: use generic kvm_para.h
  c6x: remove internal kernel symbols from exported setup.h
  c6x: fix misleading comment
  c6x: run do_notify_resume with interrupts enabled

Pull assorted signal-related fixes from Al Viro:
 "uml regression fix (braino in sys_execve() patch) + a bunch of fucked
  sigaltstack-on-rt_sigreturn uses, similar to sparc64 fix that went in
  through davem's tree.  m32r horrors not included - that one's waiting
  for maintainer."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
  microblaze: rt_sigreturn is too trigger-happy about sigaltstack errors
  score: do_sigaltstack() expects a userland pointer...
  sh64: fix altstack switching on sigreturn
  openrisk: fix altstack switching on sigreturn
  um: get_safe_registers() should be done in flush_thread(), not start_thread()

Pull CIFS fixes from Steve French:
 "Two low risk, small fixes, that fix cifs regressions introduced in
  3.7."

* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Fix wrong buffer pointer usage in smb_set_file_info
  cifs: fix writeback race with file that is growing

Pull remoteproc fix from Ohad Ben-Cohen:
 "A single remoteproc fix for an error path issue reported by Ido Yariv."

* tag 'rproc-3.7-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
  remoteproc: fix error path of ->find_vqs

Pull target fix from Nicholas Bellinger:
 "So just a single target fix for v3.7.0 this time around from Roland to
  address a aborted command bug w/ tcm_qla2xxx fabric ports.

  Also, there is one outstanding IBLOCK + virtio-blk bug that is still
  being tracked down effecting v3.6.x, but AFAICT thus far this appears
  to be a bug outside of target code."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Fix handling of aborted commands

When a cpu enters S3 state, the FPU state is lost.
After resuming for S3, if we try to lazy restore the FPU for a process running
on the same CPU, this will result in a corrupted FPU context.

Ensure that "fpu_owner_task" is properly invalided when (re-)initializing a CPU,
so nobody will try to lazy restore a state which doesn't exist in the hardware.

Tested with a 64-bit kernel on a 4-core Ivybridge CPU with eagerfpu=off,
by doing thousands of suspend/resume cycles with 4 processes doing FPU
operations running. Without the patch, a process is killed after a
few hundreds cycles by a SIGFPE.

Cc: Duncan Laurie <dlaurie@chromium.org>
Cc: Olof Johansson <olofj@chromium.org>
Cc: <stable@kernel.org> v3.4+ # for 3.4 need to replace this_cpu_write by percpu_write
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Link: http://lkml.kernel.org/r/1354306532-1014-1-git-send-email-vpalatin@chromium.org


Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

Pull DRM fixes from Dave Airlie:
 "Just driver fixes, nothing major, except maybe the Ironlake rc6
  disable:

   - intel:
     * revert ironlake rc6 - we still have one ilk regression, but this
       gets rid of one big one
     * turn off cloning
     * a directed fix for Apple edp
   - radeon: one modesetting fix
   - exynos: minor fixes"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  radeon: fix pll/ctrc mapping on dce2 and dce3 hardware
  Revert "drm/i915: enable rc6 on ilk again"
  drm/i915: do not default to 18 bpp for eDP if missing from VBT
  drm/exynos: Fix potential NULL pointer dereference in exynos_drm_encoder.c
  drm/exynos: Make exynos4/5_fimd_driver_data static
  drm/exynos: fix overlay updating issue
  drm/exynos: remove unnecessary code.
  drm/exynos: fix linux framebuffer address setting.
  drm/i915: disable cloning on sdvo

Merge misc fixes from Andrew Morton:
 "Seven fixes, some of them fingers-crossed :("

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (7 patches)
  drivers/rtc/rtc-tps65910.c: fix invalid pointer access on _remove()
  mm: soft offline: split thp at the beginning of soft_offline_page()
  mm: avoid waking kswapd for THP allocations when compaction is deferred or contended
  revert "Revert "mm: remove __GFP_NO_KSWAPD""
  mm: vmscan: fix endless loop in kswapd balancing
  mm/vmemmap: fix wrong use of virt_to_page
  mm: compaction: fix return value of capture_free_page()

Pull ARM SoC fixes from Arnd Bergmann:
 "These are three fixes for the Marvell EBU family and one for the
  Samsung s3c platforms.  All of them are obvious should still make it
  into 3.7."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: Kirkwood: Update PCI-E fixup
  Dove: Fix irq_to_pmu()
  Dove: Attempt to fix PMU/RTC interrupts
  ARM: S3C24XX: Fix potential NULL pointer dereference error

Pull ARM ixp4xx bug fixes from Arnd Bergmann:
 "These were originally prepared by Krzysztof Halasa but not submitted
  in time for v3.7 due to some confusion about how ixp4xx patches should
  be handled.  Jason Cooper thankfully offered to help out sending the
  patches upstream through arm-soc now, but given the timing, we could
  as well delay them for 3.8."

* tag 'ixp4xx-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  IXP4xx: use __iomem for MMIO
  IXP4xx: map CPU config registers within VMALLOC region.
  IXP4xx: Always ioremap() Queue Manager MMIO region at boot.
  ixp4xx: Declare MODULE_FIRMWARE usage
  IXP4xx crypto: MOD_AES{128,192,256} already include key size.
  WAN: Remove redundant HDLC info printed by IXP4xx HSS driver.
  IXP4xx: Remove time limit for PCI TRDY to enable use of slow devices.
  IXP4xx: ixp4xx_crypto driver requires Queue Manager and NPE drivers.
  IXP4xx: HW pseudo-random generator is available on IXP45x/46x only.
  IXP4xx: Fix off-by-one bug in Goramo MultiLink platform.
  IXP4xx: Fix Goramo MultiLink platform compilation.

Pull final ARM fix from Russell King:
 "One final fix, spotted by Will, to do with what happens when we boot a
  SMP kernel on UP."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7586/1: sp804: set cpumask to cpu_possible_mask for clock event device

The tps65910_rtc data is registered as the platform driver data in
_probe(= ).  Therefore the tps65910_rtc should be used on unregistering
the rtc device.  And device pointer should be retrieved from the
platform_device structure.

This patch fixes the below oops:

 Unable to handle kernel NULL pointer dereference at virtual address 00000008
 Modules linked in: rtc_tps65910(-)
 CPU: 0    Not tainted  (3.7.0-rc7-next-20121128-g6b1f974-dirty #7)
 PC is at tps65910_rtc_alarm_irq_enable+0x20/0x2c [rtc_tps65910]
     (tps65910_rtc_alarm_irq_enable+0x20/0x2c [rtc_tps65910])
     (tps65910_rtc_remove+0x18/0x28 [rtc_tps65910])
     (platform_drv_remove+0x18/0x1c)
     (__device_release_driver+0x70/0xcc)
     (driver_detach+0xb4/0xb8)
     (bus_remove_driver+0x7c/0xc0)
     (sys_delete_module+0x148/0x21c)

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

When we try to soft-offline a thp tail page, put_page() is called on the
tail page unthinkingly and VM_BUG_ON is triggered in put_compound_page().

This patch splits thp before going into the main body of soft-offlining.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

With "mm: vmscan: scale number of pages reclaimed by reclaim/compaction
based on failures" reverted, Zdenek Kabelac reported the following

  Hmm,  so it's just took longer to hit the problem and observe
  kswapd0 spinning on my CPU again - it's not as endless like before -
  but still it easily eats minutes - it helps to turn off  Firefox
  or TB  (memory hungry apps) so kswapd0 stops soon - and restart
  those apps again.  (And I still have like >1GB of cached memory)

  kswapd0         R  running task        0    30      2 0x00000000
  Call Trace:
    preempt_schedule+0x42/0x60
    _raw_spin_unlock+0x55/0x60
    put_super+0x31/0x40
    drop_super+0x22/0x30
    prune_super+0x149/0x1b0
    shrink_slab+0xba/0x510

The sysrq+m indicates the system has no swap so it'll never reclaim
anonymous pages as part of reclaim/compaction.  That is one part of the
problem but not the root cause as file-backed pages could also be
reclaimed.

The likely underlying problem is that kswapd is woken up or kept awake
for each THP allocation request in the page allocator slow path.

If compaction fails for the requesting process then compaction will be
deferred for a time and direct reclaim is avoided.  However, if there
are a storm of THP requests that are simply rejected, it will still be
the the case that kswapd is awake for a prolonged period of time as
pgdat->kswapd_max_order is updated each time.  This is noticed by the
main kswapd() loop and it will not call kswapd_try_to_sleep().  Instead
it will loopp, shrinking a small number of pages and calling
shrink_slab() on each iteration.

This patch defers when kswapd gets woken up for THP allocations.  For
!THP allocations, kswapd is always woken up.  For THP allocations,
kswapd is woken up iff the process is willing to enter into direct
reclaim/compaction.

[akpm@linux-foundation.org: fix typo in comment]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Zdenek Kabelac <zkabelac@redhat.com>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Cc: Glauber Costa <glommer@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>