Needed so it can be called from outside of sched.c.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Combine two unlikely's
Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

TREE_AVG and APPROX_AVG are initial task placement policies that have been
disabled for a long while.. time to remove them.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
CC: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Fix atomic backoff limit.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (46 commits)
  [NET] ifb: set separate lockdep classes for queue locks
  [IPV6] KCONFIG: Fix description about IPV6_TUNNEL.
  [TCP]: Fix shrinking windows with window scaling
  netpoll: zap_completion_queue: adjust skb->users counter
  bridge: use time_before() in br_fdb_cleanup()
  [TG3]: Fix build warning on sparc32.
  MAINTAINERS: bluez-devel is subscribers-only
  audit: netlink socket can be auto-bound to pid other than current->pid (v2)
  [NET]: Fix permissions of /proc/net
  [SCTP]: Fix a race between module load and protosw access
  [NETFILTER]: ipt_recent: sanity check hit count
  [NETFILTER]: nf_conntrack_h323: logical-bitwise & confusion in process_setup()
  [RT2X00] drivers/net/wireless/rt2x00/rt2x00dev.c: remove dead code, fix warning
  [IPV4]: esp_output() misannotations
  [8021Q]: vlan_dev misannotations
  xfrm: ->eth_proto is __be16
  [IPV4]: ipv4_is_lbcast() misannotations
  [SUNRPC]: net/* NULL noise
  [SCTP]: fix misannotated __sctp_rcv_asconf_lookup()
  [PKT_SCHED]: annotate cls_u32
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25:
  sh: Use relative paths for mach/cpu symlinks.
  SH: Use newer, non-deprecated __SPIN_LOCK_UNLOCKED macro.
  sh: Fix more user header breakage from sh64 integration.
  sh: Fix uImage build error.
  sh: Fix up the timer IRQ definition for SH7203.
  sh: Fix up the address error exception handler for SH-2.
  serial: sh-sci: Fix fifo stall on SH7760/SH7780/SH7785 SCIF.

When building the kernel without passing the O= command line parameter
there's no point to use absolute paths for them.

Usually relative paths are preferred because they survive directory
moves, work across networked file systems and chrooted environments.

Absolute paths are still used if an output directory is given.
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

[   10.536424] =======================================================
[   10.536424] [ INFO: possible circular locking dependency detected ]
[   10.536424] 2.6.25-rc3-devel #3
[   10.536424] -------------------------------------------------------
[   10.536424] swapper/0 is trying to acquire lock:
[   10.536424]  (&dev->queue_lock){-+..}, at: [<c0299b4a>] 
dev_queue_xmit+0x175/0x2f3
[   10.536424]
[   10.536424] but task is already holding lock:
[   10.536424]  (&p->tcfc_lock){-+..}, at: [<f8a67154>] tcf_mirred+0x20/0x178 
[act_mirred]
[   10.536424]
[   10.536424] which lock already depends on the new lock.

lockdep warns of locking order while using ifb with sch_ingress and
act_mirred: ingress_lock, tcfc_lock, queue_lock (usually queue_lock
is at the beginning). This patch is only to tell lockdep that ifb is
a different device (e.g. from eth) and has its own pair of queue
locks. (This warning is a false-positive in common scenario of using
ifb; yet there are possible situations, when this order could be
dangerous; lockdep should warn in such a case.) (With suggestions by
David S. Miller)
Reported-and-tested-by: Denys Fedoryshchenko <denys@visp.net.lb>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>

Based on notice from "Colin" <colins@sjtu.edu.cn>.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

When selecting a new window, tcp_select_window() tries not to shrink
the offered window by using the maximum of the remaining offered window
size and the newly calculated window size. The newly calculated window
size is always a multiple of the window scaling factor, the remaining
window size however might not be since it depends on rcv_wup/rcv_nxt.
This means we're effectively shrinking the window when scaling it down.


The dump below shows the problem (scaling factor 2^7):

- Window size of 557 (71296) is advertised, up to 3111907257:

IP 172.2.2.3.33000 > 172.2.2.2.33000: . ack 3111835961 win 557 <...>

- New window size of 514 (65792) is advertised, up to 3111907217, 40 bytes
  below the last end:

IP 172.2.2.3.33000 > 172.2.2.2.33000: . 3113575668:3113577116(1448) ack 3111841425 win 514 <...>

The number 40 results from downscaling the remaining window:

3111907257 - 3111841425 = 65832
65832 / 2^7 = 514
65832 % 2^7 = 40

If the sender uses up the entire window before it is shrunk, this can have
chaotic effects on the connection. When sending ACKs, tcp_acceptable_seq()
will notice that the window has been shrunk since tcp_wnd_end() is before
tp->snd_nxt, which makes it choose tcp_wnd_end() as sequence number.
This will fail the receivers checks in tcp_sequence() however since it
is before it's tp->rcv_wup, making it respond with a dupack.

If both sides are in this condition, this leads to a constant flood of
ACKs until the connection times out.

Make sure the window is never shrunk by aligning the remaining window to
the window scaling factor.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

zap_completion_queue() retrieves skbs from completion_queue where they have
zero skb->users counter.  Before dev_kfree_skb_any() it should be non-zero
yet, so it's increased now.
Reported-and-tested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

In br_fdb_cleanup() next_timer and this_timer are in jiffies, so they
should be compared using the time_after() macro.
Signed-off-by: Fabio Checconi <fabio@gandalf.sssup.it>
Signed-off-by: Stephen Hemminger <stephen.hemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Sparc MAC address support should be protected consistently
with CONFIG_SPARC, but there was a stray CONFIG_SPARC64
case.

Bump driver version and release date.

Reported by Andrew Morton.
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>

From:	Pavel Emelyanov <xemul@openvz.org>

This patch is based on the one from Thomas.

The kauditd_thread() calls the netlink_unicast() and passes 
the audit_pid to it. The audit_pid, in turn, is received from 
the user space and the tool (I've checked the audit v1.6.9) 
uses getpid() to pass one in the kernel. Besides, this tool 
doesn't bind the netlink socket to this id, but simply creates 
it allowing the kernel to auto-bind one.

That's the preamble.

The problem is that netlink_autobind() _does_not_ guarantees
that the socket will be auto-bound to the current pid. Instead
it uses the current pid as a hint to start looking for a free
id. So, in case of conflict, the audit messages can be sent
to a wrong socket. This can happen (it's unlikely, but can be)
in case some task opens more than one netlink sockets and then
the audit one starts - in this case the audit's pid can be busy
and its socket will be bound to another id.

The proposal is to introduce an audit_nlk_pid in audit subsys,
that will point to the netlink socket to send packets to. It
will most often be equal to audit_pid. The socket id can be 
got from the skb's netlink CB right in the audit_receive_msg.
The audit_nlk_pid reset to 0 is not required, since all the
decisions are taken based on audit_pid value only.

Later, if the audit tools will bind the socket themselves, the
kernel will have to provide a way to setup the audit_nlk_pid
as well.

A good side effect of this patch is that audit_pid can later 
be converted to struct pid, as it is not longer safe to use 
pid_t-s in the presence of pid namespaces. But audit code still 
uses the tgid from task_struct in the audit_signal_info and in
the audit_filter_syscall.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

commit e9720acd ([NET]: Make /proc/net a symlink on /proc/self/net (v3))
broke ganglia and probably other applications that read /proc/net/dev.

This is due to the change of permissions of /proc/net that was
introduced in that commit.

Before: dr-xr-xr-x 5 root root 0 Mar 19 11:30 /proc/net
After: dr-xr--r-- 5 root root 0 Mar 19 11:29 /proc/self/net

This patch restores the permissions to the old value which makes
ganglia happy again.

Pavel Emelyanov says:

	This also broke the postfix, as it was reported in bug #10286
	and described in detail by Benjamin.
Signed-off-by: Andre Noll <maan@systemlinux.org>
Acked-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

There is a race is SCTP between the loading of the module
and the access by the socket layer to the protocol functions.
In particular, a list of addresss that SCTP maintains is
not initialized prior to the registration with the protosw.
Thus it is possible for a user application to gain access
to SCTP functions before everything has been initialized.
The problem shows up as odd crashes during connection
initializtion when we try to access the SCTP address list.

The solution is to refactor how we do registration and
initialize the lists prior to registering with the protosw.
Care must be taken since the address list initialization
depends on some other pieces of SCTP initialization.  Also
the clean-up in case of failure now also needs to be refactored.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If a rule using ipt_recent is created with a hit count greater than
ip_pkt_list_tot, the rule will never match as it cannot keep track
of enough timestamps. This patch makes ipt_recent refuse to create such
rules.

With ip_pkt_list_tot's default value of 20, the following can be used
to reproduce the problem.

nc -u -l 0.0.0.0 1234 &
for i in `seq 1 100`; do echo $i | nc -w 1 -u 127.0.0.1 1234; done

This limits it to 20 packets:
iptables -A OUTPUT -p udp --dport 1234 -m recent --set --name test \
         --rsource
iptables -A OUTPUT -p udp --dport 1234 -m recent --update --seconds \
         60 --hitcount 20 --name test --rsource -j DROP

While this is unlimited:
iptables -A OUTPUT -p udp --dport 1234 -m recent --set --name test \
         --rsource
iptables -A OUTPUT -p udp --dport 1234 -m recent --update --seconds \
         60 --hitcount 21 --name test --rsource -j DROP

With the patch the second rule-set will throw an EINVAL.
Reported-by: Sean Kennedy <skennedy@vcn.com>
Signed-off-by: Daniel Hokka Zakrisson <daniel@hozac.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

logical-bitwise & confusion
Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

* 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  nfs: don't ignore return value from nfs_pageio_add_request

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: fix panic in handle_at_packet

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] a100u2w: fix bitmap lookup routine
  [SCSI] fix media change events for polled devices
  [SCSI] sd, sr: do not emit change event at device add
  [SCSI] mpt fusion: Power Management fixes for MPT SAS PCI-E controllers
  [SCSI] gdth: Allocate sense_buffer to prevent NULL pointer dereference
  [SCSI] arcmsr: fix iounmap error for Type B adapter
  [SCSI] isd200: Allocate sense_buffer for hacked up scsi_cmnd
  [SCSI] fix bsg queue oops with iscsi logout
  [SCSI] Fix dependency problems in SCSI drivers
  [SCSI] advansys: Fix bug in AdvLoadMicrocode

This fixes a use-after-free bug in the handling of split transactions.
The AT DMA handler of the request was occasionally executed after the
AR DMA handler of the response.  The AT DMA handler then accessed an
already freed packet.

Reported by Johannes Berg.
http://bugzilla.kernel.org/show_bug.cgi?id=9617Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Tested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 4872/1: Replaces buggy macro in S3C2410 irq include
  [ARM] 4870/1: fix signal return code when enable CONFIG_OABI_COMPAT
  [ARM] 4869/1: ARM: OMAP: Fix compile for mcbsp
  [ARM] 4865/1: Register the F75375 device in the GLAN Tank platform code
  [ARM] 4864/1: Enable write buffer coalescing on IOP
  [ARM] 4863/1: AT91: CAP9 USART definitions for early debug
  [ARM] 4861/1: AT91: Update maintainer email address (again)
  ARM: OMAP1: Fix typo in OMAP1 MPU clock source initialization
  ARM: OMAP: Fix DMA CLINK mask, clear spurious interrupt
  ARM: OMAP: Fix chain_a_transfer return value
  ARM: OMAP: Fix missing makefile options
  ARM: OMAP: Fix GPIO IRQ unmask
  ARM: OMAP: Fix clockevent support for hrtimers

* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [S390] futex: let futex_atomic_cmpxchg_pt survive early functional tests.

* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb:
  V4L/DVB (7367): bug #10211: Fix depencencies for cx2341x
  V4L/DVB (7362): tvp5150.c: logical-bitwise and confusion
  V4L/DVB (7334): usb video: add a device link to usbvideo devices, else hal will ignore them
  V4L/DVB (7330): V4L1 - fix v4l_compat_translate_ioctl possible NULL deref
  V4L/DVB (7328): usb/opera1.c: fix a memory leak
  V4L/DVB (7291): em28xx: correct use of and fix
  V4L/DVB (7285): em28xx: Correct use of ! and &
  V4L/DVB (7279): ivtv: Add missing sg_init_table()
  V4L/DVB (7268): saa7134: fix: tuner should be loaded before calling saa7134_board_init2()
  V4L/DVB (7267): cx88: Fix: Loads tuner module before sending commands to it
  V4L/DVB (7251): VIDEO_VIVI must depend on VIDEO_DEV
  V4L/DVB (7242): ivtv: fix for yuv filter table check
  V4L/DVB (7236): bttv: struct member initialized twice
  V4L/DVB (7228): saa7134: fix FM radio support for the Pinnacle PCTV 110i

The original justification for cap_task_kill() was as follows:

	check_kill_permission() does appropriate uid equivalence checks.
	However with file capabilities it becomes possible for an
	unprivileged user to execute a file with file capabilities
	resulting in a more privileged task with the same uid.

However now that cap_task_kill() always returns 0 (permission
granted) when p->uid==current->uid, the whole hook is worthless,
and only likely to create more subtle problems in the corner cases
where it might still be called but return -EPERM.  Those cases
are basically when uids are different but euid/suid is equivalent
as per the check in check_kill_permission().

One example of a still-broken application is 'at' for non-root users.

This patch removes cap_task_kill().
Signed-off-by: Serge Hallyn <serge@hallyn.com>
Acked-by: Andrew G. Morgan <morgan@kernel.org>
Earlier-version-tested-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

a0c1e907 "futex: runtime enable pi and
robust functionality" introduces a test wether futex in atomic stuff
works or not.
It does that by writing to address 0 of the kernel address space. This
will crash on older machines where addressing mode switching is enabled
but where the mvcos instruction is not available. Page table walking is
done by hand and therefore the code tries to access current->mm which
is NULL.
Therefore add an extra check, so we survive the early test.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

Merge branch 'omap-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 into m

* 'omap-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  ARM: OMAP1: Fix typo in OMAP1 MPU clock source initialization
  ARM: OMAP: Fix DMA CLINK mask, clear spurious interrupt
  ARM: OMAP: Fix chain_a_transfer return value
  ARM: OMAP: Fix missing makefile options
  ARM: OMAP: Fix GPIO IRQ unmask
  ARM: OMAP: Fix clockevent support for hrtimers

This is a bug correction for a macro that generated wrong results.
Nobody used it in official kernel tree, my driver did.
Signed-off-by: Davide Rizzo <davide@elpa.it>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

fix signal return code when enable CONFIG_OABI_COMPAT
Signed-off-by: Janboe Ye <janboe.ye@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Until DSP MMU code is merged, dsp_request_mem() does not exist.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

This patch adds the code required to register the F75375 device on the
GLAN Tank.
Signed-off-by: Gordon Farquharson <gordonfarquharson@gmail.com>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Some bootloaders are disabling write buffer coalescing. Enable it back
under linux.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Define AT91_USART0, 1, 2 so the selection of the UART for early kernel
messages works.
   (See commit fa3218d8).

Replace AT91_SHDC with AT91_SHDWC to be consistent with other AT91 platforms.
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Change email address of AT91 maintainer.

This reverts the incorrect change in commit
6650e0a5Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Fix for build #408
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

logical-bitwise & confusion
Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: Pascal Terjan <pterjan@mandriva.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>