kernel/kernel-generic.git
12 years agonet/at91_ether: share macb_set_rx_mode with macb
Joachim Eastwood [Thu, 18 Oct 2012 11:01:15 +0000 (11:01 +0000)]
net/at91_ether: share macb_set_rx_mode with macb

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agonet/at91_ether: use ethtool and mdio from macb
Joachim Eastwood [Thu, 18 Oct 2012 11:01:14 +0000 (11:01 +0000)]
net/at91_ether: use ethtool and mdio from macb

This rips out the at91_ether phy handling and ethtool stuff
and replace it with equivalent stuff from macb.

The only thing lost is the phy irq support from at91_ether,
but this can be added to macb and then benefit all users.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agonet/at91_ether: compile macb for exported functions
Joachim Eastwood [Thu, 18 Oct 2012 11:01:13 +0000 (11:01 +0000)]
net/at91_ether: compile macb for exported functions

Comile macb as well as at91_ether to access exported functions.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agonet/macb: export some symbols for at91_ether
Joachim Eastwood [Thu, 18 Oct 2012 11:01:12 +0000 (11:01 +0000)]
net/macb: export some symbols for at91_ether

Export some symbols to start sharing code between
macb and at91_ether drivers.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agonet/at91_ether: use pclk member instead of ether_clk
Joachim Eastwood [Thu, 18 Oct 2012 11:01:11 +0000 (11:01 +0000)]
net/at91_ether: use pclk member instead of ether_clk

Remove old at91_priv member and use pclk member from macb.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agonet/at91_ether/macb: absorb at91_private in to macb private struct
Joachim Eastwood [Thu, 18 Oct 2012 11:01:10 +0000 (11:01 +0000)]
net/at91_ether/macb: absorb at91_private in to macb private struct

This will make it easier to share code between the drivers and
eventually merge them into one driver.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agonet/at91_ether: use macb defs for rx dma buffers
Joachim Eastwood [Thu, 18 Oct 2012 11:01:09 +0000 (11:01 +0000)]
net/at91_ether: use macb defs for rx dma buffers

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agonet/at91_ether: use macb access functions
Joachim Eastwood [Thu, 18 Oct 2012 11:01:08 +0000 (11:01 +0000)]
net/at91_ether: use macb access functions

Use macb read/write funtions and remove the old at91_ether ones.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agonet/at91_ether: use macb register definitions
Joachim Eastwood [Thu, 18 Oct 2012 11:01:07 +0000 (11:01 +0000)]
net/at91_ether: use macb register definitions

Use register and bits definitions from the macb header. This makes it
possible to have one header file for this hardware.

Process was scripted and the resulting object file has the same checksum.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agonet/macb: add AT91RM9200 specific registers and bits to header
Joachim Eastwood [Thu, 18 Oct 2012 11:01:06 +0000 (11:01 +0000)]
net/macb: add AT91RM9200 specific registers and bits to header

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
12 years agoMerge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge
David S. Miller [Thu, 18 Oct 2012 19:36:59 +0000 (15:36 -0400)]
Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-merge

Included fixes:
- Fix broadcast packet CRC calculation which can lead to ~80% broadcast packet
  loss
- Fix a race condition in duplicate broadcast packet check

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agotcp: fix FIONREAD/SIOCINQ
Eric Dumazet [Thu, 18 Oct 2012 09:14:12 +0000 (09:14 +0000)]
tcp: fix FIONREAD/SIOCINQ

tcp_ioctl() tries to take into account if tcp socket received a FIN
to report correct number bytes in receive queue.

But its flaky because if the application ate the last skb,
we return 1 instead of 0.

Correct way to detect that FIN was received is to test SOCK_DONE.

Reported-by: Elliot Hughes <enh@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: qmi_wwan: adding more ZTE devices
Bjørn Mork [Thu, 18 Oct 2012 05:11:29 +0000 (05:11 +0000)]
net: qmi_wwan: adding more ZTE devices

Analyzed a few Windows driver description files, supporting
this long list of devices:

%ztewwan.DeviceDesc0002%    = ztewwan.ndi, USB\VID_19D2&PID_0002&MI_01
%ztewwan.DeviceDesc0012%    = ztewwan.ndi, USB\VID_19D2&PID_0012&MI_01
%ztewwan.DeviceDesc0017%    = ztewwan.ndi, USB\VID_19D2&PID_0017&MI_03
%ztewwan.DeviceDesc0021%    = ztewwan.ndi, USB\VID_19D2&PID_0021&MI_04
%ztewwan.DeviceDesc0025%    = ztewwan.ndi, USB\VID_19D2&PID_0025&MI_01
%ztewwan.DeviceDesc0031%    = ztewwan.ndi, USB\VID_19D2&PID_0031&MI_04
%ztewwan.DeviceDesc0042%    = ztewwan.ndi, USB\VID_19D2&PID_0042&MI_04
%ztewwan.DeviceDesc0049%    = ztewwan.ndi, USB\VID_19D2&PID_0049&MI_05
%ztewwan.DeviceDesc0052%    = ztewwan.ndi, USB\VID_19D2&PID_0052&MI_04
%ztewwan.DeviceDesc0055%    = ztewwan.ndi, USB\VID_19D2&PID_0055&MI_01
%ztewwan.DeviceDesc0058%    = ztewwan.ndi, USB\VID_19D2&PID_0058&MI_04
%ztewwan.DeviceDesc0063%    = ztewwan.ndi, USB\VID_19D2&PID_0063&MI_04
%ztewwan.DeviceDesc2002%    = ztewwan.ndi, USB\VID_19D2&PID_2002&MI_04
%ztewwan.DeviceDesc0104%    = ztewwan.ndi, USB\VID_19D2&PID_0104&MI_04
%ztewwan.DeviceDesc0113%    = ztewwan.ndi, USB\VID_19D2&PID_0113&MI_05
%ztewwan.DeviceDesc0118%    = ztewwan.ndi, USB\VID_19D2&PID_0118&MI_05
%ztewwan.DeviceDesc0121%    = ztewwan.ndi, USB\VID_19D2&PID_0121&MI_05
%ztewwan.DeviceDesc0123%    = ztewwan.ndi, USB\VID_19D2&PID_0123&MI_04
%ztewwan.DeviceDesc0124%    = ztewwan.ndi, USB\VID_19D2&PID_0124&MI_05
%ztewwan.DeviceDesc0125%    = ztewwan.ndi, USB\VID_19D2&PID_0125&MI_06
%ztewwan.DeviceDesc0126%    = ztewwan.ndi, USB\VID_19D2&PID_0126&MI_05
%ztewwan.DeviceDesc1008%    = ztewwan.ndi, USB\VID_19D2&PID_1008&MI_04
%ztewwan.DeviceDesc1010%    = ztewwan.ndi, USB\VID_19D2&PID_1010&MI_04
%ztewwan.DeviceDesc1012%    = ztewwan.ndi, USB\VID_19D2&PID_1012&MI_04
%ztewwan.DeviceDesc1402%    = ztewwan.ndi, USB\VID_19D2&PID_1402&MI_02
%ztewwan.DeviceDesc0157%    = ztewwan.ndi, USB\VID_19D2&PID_0157&MI_05
%ztewwan.DeviceDesc0158%    = ztewwan.ndi, USB\VID_19D2&PID_0158&MI_03
%ztewwan.DeviceDesc1401%    = ztewwan.ndi, USB\VID_19D2&PID_1401&MI_02
%ztewwan.DeviceDesc0130%    = ztewwan.ndi, USB\VID_19D2&PID_0130&MI_01
%ztewwan.DeviceDesc0133%    = ztewwan.ndi, USB\VID_19D2&PID_0133&MI_03
%ztewwan.DeviceDesc0176%    = ztewwan.ndi, USB\VID_19D2&PID_0176&MI_03
%ztewwan.DeviceDesc0178%    = ztewwan.ndi, USB\VID_19D2&PID_0178&MI_03
%ztewwan.DeviceDesc0168%    = ztewwan.ndi, USB\VID_19D2&PID_0168&MI_04
;EuFi890
%ztewwan.DeviceDesc0191%    = ztewwan.ndi, USB\VID_19D2&PID_0191&MI_04
;AL621
%ztewwan.DeviceDesc0167%    = ztewwan.ndi, USB\VID_19D2&PID_0167&MI_04
;MF821
%ztewwan.DeviceDesc0199%    = ztewwan.ndi, USB\VID_19D2&PID_0199&MI_01
%ztewwan.DeviceDesc0200%    = ztewwan.ndi, USB\VID_19D2&PID_0200&MI_01
%ztewwan.DeviceDesc0257%    = ztewwan.ndi, USB\VID_19D2&PID_0257&MI_03
;MF821V
%ztewwan.DeviceDesc1018%    = ztewwan.ndi, USB\VID_19D2&PID_1018&MI_03
;MF91
%ztewwan.DeviceDesc1426%    = ztewwan.ndi, USB\VID_19D2&PID_1426&MI_02
;0141
%ztewwan.DeviceDesc1247%    = ztewwan.ndi, USB\VID_19D2&PID_1247&MI_04
%ztewwan.DeviceDesc1425%    = ztewwan.ndi, USB\VID_19D2&PID_1425&MI_02
%ztewwan.DeviceDesc1424%    = ztewwan.ndi, USB\VID_19D2&PID_1424&MI_02
%ztewwan.DeviceDesc1252%    = ztewwan.ndi, USB\VID_19D2&PID_1252&MI_04
%ztewwan.DeviceDesc1254%    = ztewwan.ndi, USB\VID_19D2&PID_1254&MI_04
%ztewwan.DeviceDesc1255A%   = ztewwan.ndi, USB\VID_19D2&PID_1255&MI_03
%ztewwan.DeviceDesc1255B%   = ztewwan.ndi, USB\VID_19D2&PID_1255&MI_04
%ztewwan.DeviceDesc1256%    = ztewwan.ndi, USB\VID_19D2&PID_1256&MI_04
%ztewwan.DeviceDesc1245%    = ztewwanCombB.ndi, USB\VID_19D2&PID_1245&MI_04
%ztewwan.DeviceDesc1021%    = ztewwan.ndi, USB\VID_19D2&PID_1021&MI_02

Adding the ones we were missing.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonetlink: use kfree_rcu() in netlink_release()
Eric Dumazet [Thu, 18 Oct 2012 03:21:55 +0000 (03:21 +0000)]
netlink: use kfree_rcu() in netlink_release()

On some suspend/resume operations involving wimax device, we have
noticed some intermittent memory corruptions in netlink code.

Stéphane Marchesin tracked this corruption in netlink_update_listeners()
and suggested a patch.

It appears netlink_release() should use kfree_rcu() instead of kfree()
for the listeners structure as it may be used by other cpus using RCU
protection.

netlink_release() must set to NULL the listeners pointer when
it is about to be freed.

Also have to protect netlink_update_listeners() and
netlink_has_listeners() if listeners is NULL.

Add a nl_deref_protected() lockdep helper to properly document which
locks protects us.

Reported-by: Jonathan Kliegman <kliegs@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Stéphane Marchesin <marcheu@google.com>
Cc: Sam Leffler <sleffler@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv4: Fix flushing of cached routing informations
Steffen Klassert [Wed, 17 Oct 2012 21:17:44 +0000 (21:17 +0000)]
ipv4: Fix flushing of cached routing informations

Currently we can not flush cached pmtu/redirect informations via
the ipv4_sysctl_rtcache_flush sysctl. We need to check the rt_genid
of the old route and reset the nh exeption if the old route is
expired when we bind a new route to a nh exeption.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agovlan: allow to change type when no vlan device is hooked on netdev
Jiri Pirko [Wed, 17 Oct 2012 01:37:36 +0000 (01:37 +0000)]
vlan: allow to change type when no vlan device is hooked on netdev

vlan_info might be present but still no vlan devices might be there.
That is in case of vlan0 automatically added.

So in that case, allow to change netdev type.

Reported-by: Jon Stanley <jstanley@rmrf.net>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agophy: add AT803x driver
Matus Ujhelyi [Sun, 14 Oct 2012 19:07:16 +0000 (19:07 +0000)]
phy: add AT803x driver

This driver add support for wake over lan on AT803x phys.

Signed-off-by: Matus Ujhelyi <ujhelyi.m@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agousb/ipheth: Add iPhone 5 support
Jay Purohit [Sun, 14 Oct 2012 07:07:21 +0000 (07:07 +0000)]
usb/ipheth: Add iPhone 5 support

I noticed that the iPhone ethernet driver did not support
iPhone 5. I quickly added support to it in my kernel, here's
a patch.

Signed-off-by: Jay Purohit <jspurohit@velocitylimitless.com>
Acked-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Jan Ceuleers <jan.ceuleers@computer.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'master' of git://1984.lsi.us.es/nf
David S. Miller [Thu, 18 Oct 2012 19:17:09 +0000 (15:17 -0400)]
Merge branch 'master' of git://1984.lsi.us.es/nf

Pablo Neira Ayuso Says:

====================
The following patchset contains Netfilter/IPVS updates for your
net tree, they are:

* Fix incorrect hooks for SNAT and DNAT (bug introduced in recent IPv6
  NAT changes), from Elison Niven.

* Fix xt_TEE (got broken with recent rt_gateway semantic change),
  from Eric Dumazet.

* Fix custom conntrack timeout policy attachment for IPv6, from myself.

* Always initialize ip_vs_timeout_user in case that TCP or UDP protocols
  is disabled, from Arnd Bergmann.

Note that I had to pull from your tree to obtain:

(c92b96553a80c1 ipv4: Add FLOWI_FLAG_KNOWN_NH)

which was required for the xt_TEE fix.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agobatman-adv: Fix potential broadcast BLA-duplicate-check race condition
Linus Lüssing [Wed, 17 Oct 2012 12:53:05 +0000 (14:53 +0200)]
batman-adv: Fix potential broadcast BLA-duplicate-check race condition

Threads in the bottom half of batadv_bla_check_bcast_duplist() might
otherwise for instance overwrite variables which other threads might
be using/reading at the same time in the top half, potentially
leading to messing up the bcast_duplist, possibly resulting in false
bridge loop avoidance duplicate check decisions.

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
12 years agobatman-adv: Fix broadcast packet CRC calculation
Linus Lüssing [Wed, 17 Oct 2012 12:53:04 +0000 (14:53 +0200)]
batman-adv: Fix broadcast packet CRC calculation

So far the crc16 checksum for a batman-adv broadcast data packet, received
on a batman-adv hard interface, was calculated over zero bytes of its
content leading to many incoming broadcast data packets wrongly being
dropped (60-80% packet loss).

This patch fixes this issue by calculating the crc16 over the actual,
complete broadcast payload.

The issue is a regression introduced by
("batman-adv: add broadcast duplicate check").

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
12 years agoapparmor: fix apparmor OOPS in audit_log_untrustedstring+0x1c/0x40
John Johansen [Wed, 17 Oct 2012 20:29:33 +0000 (13:29 -0700)]
apparmor: fix apparmor OOPS in audit_log_untrustedstring+0x1c/0x40

The capability defines have moved causing the auto generated names
of capabilities that apparmor uses in logging to be incorrect.

Fix the autogenerated table source to uapi/linux/capability.h

Reported-by: YanHong <clouds.yan@gmail.com>
Reported-by: Krzysztof Kolasa <kkolasa@winsoft.pl>
Analyzed-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge tag 'uapi-fixes-20121017' of git://git.infradead.org/users/dhowells/linux-headers
Linus Torvalds [Wed, 17 Oct 2012 20:40:22 +0000 (13:40 -0700)]
Merge tag 'uapi-fixes-20121017' of git://git.infradead.org/users/dhowells/linux-headers

Pull misc UAPI fixes from David Howells:
 "They do a number of things:

  (1) Import a patch from Catalin Marinas to extend the generic-y in
      Kbuild facility to uapi directories.

  (2) Make arch/tile's ucontext.h file use (1) and remove the header-y
      line from the kernel internal side of things.

  (3) Remove some now-empty conditional bits from include/linux/Kbuild.
      The contents got moved to the UAPI side of things along with new
      conditionals.

  (4) Deal with now-empty files:

     (a) Empty Kbuild files under include/ get removed.

     (b) Empty Kbuild files under arch/ get comments to hold them as
         they are likely to end up with generic-y or genhdr-y lines.
         Deleting them appears to work if we want to go that route.

     (c) Put a comment into uapi/asm-generic/kvm_para.h to prevent the
         patch program from deleting that, and made the arches with
         empty kvm_para.h uapi files use that instead of having their
         own files.

     (d) Put comments into four other empty uapi/ headers to prevent the
         patch program from deleting them.

  A question: Is this the right way to deal with the now-empty Kbuild
  files?

  The ones under include/ are unlikely to be used - even for generated
  files, I think - so getting rid of them is probably okay.  Once all
  the bits are in, we can probably remove all the Kbuild files under
  include/ that aren't also under include/uapi/.

  The ones under arch/ are more of an issue because of the potential for
  generic-y and genhdr-y."

* tag 'uapi-fixes-20121017' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: Make arch/sparc/include/uapi/asm/sigcontext.h non-empty
  UAPI: Make arch/sh/include/uapi/asm/hw_breakpoint.h non-empty
  UAPI: Make arch/mn10300/include/uapi/asm/setup.h non-empty
  UAPI: Put a comment into uapi/asm-generic/kvm_para.h and use it from arches
  UAPI: The tile arch uses the generic ucontext.h file
  UAPI: Place comments in empty arch Kbuilds to make them non-empty
  UAPI: Remove empty non-UAPI Kbuild files
  UAPI: Remove empty conditionals from include/linux/Kbuild
  UAPI: Make uapi/linux/irqnr.h non-empty
  uapi: Allow automatic generation of uapi/asm/ header files

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 17 Oct 2012 19:41:18 +0000 (12:41 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix regression in /proc/net/if_inet6, sometimes devices do not get
    listed.  From Eric Dumazet.

 2) Add IPSEC networking sub-section to MAINTAINERS.

 3) S390 networking fixes from Hendrik Brueckner and Stefan Raspl.

 4) Fix enslavement of devices that can't do VLAN properly, from Jiri
    Pirko.

 5) SCTP sack handling fix from Zijie Pan.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  ipv6: addrconf: fix /proc/net/if_inet6
  bnx2x: fix handling mf storage modes
  qeth: fix deadlock between recovery and bonding driver
  smsgiucv: reestablish IUCV path after resume
  sctp: fix call to SCTP_CMD_PROCESS_SACK in sctp_cmd_interpreter()
  vlan: fix bond/team enslave of vlan challenged slave/port
  MAINTAINERS: Add explicit section for IPSEC networking.

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Linus Torvalds [Wed, 17 Oct 2012 19:40:44 +0000 (12:40 -0700)]
Merge git://git./linux/kernel/git/davem/sparc

Pull sparc fixes from David Miller:
 "Two sparc64 perf bug fixes and add a sysrq facility so I can diagnose
  these kinds of problems more quickly in the future."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Fix bit twiddling in sparc_pmu_enable_event().
  sparc64: Add global PMU register dumping via sysrq.
  sparc64: Like x86 we should check current->mm during perf backtrace generation.

12 years agoUAPI: Make arch/sparc/include/uapi/asm/sigcontext.h non-empty
David Howells [Wed, 17 Oct 2012 11:32:35 +0000 (12:32 +0100)]
UAPI: Make arch/sparc/include/uapi/asm/sigcontext.h non-empty

arch/sparc/include/uapi/asm/sigcontext.h was emitted by the UAPI disintegration
script as an empty file because the parent file had no UAPI stuff in it,
despite being marked with "header-y".

Unfortunately, the patch program deletes resultant empty files when applying a
kernel patch.

So just stick a comment in there as a placeholder.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: David S. Miller <davem@davemloft.net>
cc: sparclinux@vger.kernel.org

12 years agoUAPI: Make arch/sh/include/uapi/asm/hw_breakpoint.h non-empty
David Howells [Wed, 17 Oct 2012 11:32:35 +0000 (12:32 +0100)]
UAPI: Make arch/sh/include/uapi/asm/hw_breakpoint.h non-empty

arch/sh/include/uapi/asm/hw_breakpoint.h was emitted by the UAPI disintegration
script as an empty file because the parent file had no UAPI stuff in it,
despite being marked with "header-y".

Unfortunately, the patch program deletes resultant empty files when applying a
kernel patch.

So just stick a comment in there as a placeholder.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Paul Mundt <lethal@linux-sh.org>
cc: linux-sh@vger.kernel.org

12 years agoUAPI: Make arch/mn10300/include/uapi/asm/setup.h non-empty
David Howells [Wed, 17 Oct 2012 11:32:35 +0000 (12:32 +0100)]
UAPI: Make arch/mn10300/include/uapi/asm/setup.h non-empty

arch/mn10300/include/uapi/asm/setup.h was emitted by the UAPI disintegration
script as an empty file because the parent file had no UAPI stuff in it,
despite being marked with "header-y".

Unfortunately, the patch program deletes resultant empty files when applying a
kernel patch.

So just stick a comment in there as a placeholder.

Signed-off-by: David Howells <dhowells@redhat.com>
12 years agoUAPI: Put a comment into uapi/asm-generic/kvm_para.h and use it from arches
David Howells [Wed, 17 Oct 2012 11:32:07 +0000 (12:32 +0100)]
UAPI: Put a comment into uapi/asm-generic/kvm_para.h and use it from arches

Make uapi/asm-generic/kvm_para.h non-empty by addition of a comment to stop
the patch program from deleting it when it creates it.

Then delete empty arch-specific uapi/asm/kvm_para.h files and tell the Kbuild
files to use the generic instead.

Should this perhaps instead be a #warning or #error that the facility is
unsupported on this arch?

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Arnd Bergmann <arnd@arndb.de>
cc: Avi Kivity <avi@redhat.com>
cc: Marcelo Tosatti <mtosatti@redhat.com>
cc: kvm@vger.kernel.org

12 years agoUAPI: The tile arch uses the generic ucontext.h file
David Howells [Wed, 17 Oct 2012 11:31:16 +0000 (12:31 +0100)]
UAPI: The tile arch uses the generic ucontext.h file

Move the header-y and generic-y lines for ucontext.h from
arch/tile/include/asm/Kbuild to the uapi/ Kbuild as the asm-generic variant is
used.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Chris Metcalf <cmetcalf@tilera.com>

12 years agoUAPI: Place comments in empty arch Kbuilds to make them non-empty
David Howells [Wed, 17 Oct 2012 11:31:16 +0000 (12:31 +0100)]
UAPI: Place comments in empty arch Kbuilds to make them non-empty

Place comments in:

arch/mips/include/asm/Kbuild
arch/tile/include/arch/Kbuild

to make them non-empty so that the patch program doesn't remove them when it
reduces them to nothing.

Possibly they should be just deleted, but it's possible that they'll acquire
generic-y or genhdr-y lines in future, so I'm keeping them around for the
moment.

Note that MIPS will compile happily if the file is deleted instead.  I haven't
tested TILE, but I suspect it will be the same there.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Ralf Baechle <ralf@linux-mips.org>
cc: Chris Metcalf <cmetcalf@tilera.com>

12 years agoUAPI: Remove empty non-UAPI Kbuild files
David Howells [Wed, 17 Oct 2012 11:31:15 +0000 (12:31 +0100)]
UAPI: Remove empty non-UAPI Kbuild files

Remove non-UAPI Kbuild files that have become empty as a result of UAPI
disintegration.  They used to have only header-y lines in them and those have
now moved to the Kbuild files in the corresponding uapi/ directories.

Possibly these should not be removed but rather have a comment inserted to say
they are intentionally left blank.  This would make it easier to add generated
header lines in future without having to restore the infrastructure.

Note that at this point not all the UAPI disintegration parts have been merged,
so it is likely that more empty Kbuild files will turn up.

It is probably necessary to make the files non-empty to prevent the patch
program from automatically deleting them when it reduces them to nothing.

Signed-off-by: David Howells <dhowells@redhat.com>
12 years agoUAPI: Remove empty conditionals from include/linux/Kbuild
David Howells [Wed, 17 Oct 2012 11:31:15 +0000 (12:31 +0100)]
UAPI: Remove empty conditionals from include/linux/Kbuild

Remove empty conditionals from include/linux/Kbuild as the contents, with new
conditionals, have moved to include/uapi/linux/Kbuild.

Signed-off-by: David Howells <dhowells@redhat.com>
12 years agoUAPI: Make uapi/linux/irqnr.h non-empty
David Howells [Wed, 17 Oct 2012 11:31:15 +0000 (12:31 +0100)]
UAPI: Make uapi/linux/irqnr.h non-empty

uapi/linux/irqnr.h was emitted by the UAPI disintegration script as an empty
file because the parent linux/irqnr.h had no UAPI stuff in it, despite being
marked with "header-y".

Unfortunately, the patch program deletes the empty file when applying a kernel
patch.

It's not clear why this file is part of the UAPI at all.  Looking in:

/usr/include/linux/irqnr.h

there's nothing there but a header reinclusion guard and a comment.

So just stick a comment in there as a placeholder.

Without this, if the kernel is fabricated from, say, a tarball and a patch, you
can get this error when building x86_64 or usermode Linux (and probably
others):

include/linux/irqnr.h:4:30: fatal error: uapi/linux/irqnr.h: No such file or directory

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Reported-by: Alessandro Suardi <alessandro.suardi@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Randy Dunlap <rdunlap@xenotime.net>
cc: Alessandro Suardi <alessandro.suardi@gmail.com>

12 years agouapi: Allow automatic generation of uapi/asm/ header files
Catalin Marinas [Wed, 17 Oct 2012 11:25:44 +0000 (12:25 +0100)]
uapi: Allow automatic generation of uapi/asm/ header files

Several arch/*/include/uapi/asm/* header simply include the
corresponding <asm-generic/*> file. This patch allows such files to be
specified in uapi/asm/Kbuild via "generic-y += ..." to be automatically
generated (similar to asm/Kbuild).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Arnd Bergmann <arnd@arndb.de>
12 years agonetfilter: xt_TEE: don't use destination address found in header
Eric Dumazet [Tue, 16 Oct 2012 22:33:29 +0000 (22:33 +0000)]
netfilter: xt_TEE: don't use destination address found in header

Torsten Luettgert bisected TEE regression starting with commit
f8126f1d5136be1 (ipv4: Adjust semantics of rt->rt_gateway.)

The problem is that it tries to ARP-lookup the original destination
address of the forwarded packet, not the address of the gateway.

Fix this using FLOWI_FLAG_KNOWN_NH Julian added in commit
c92b96553a80c1 (ipv4: Add FLOWI_FLAG_KNOWN_NH), so that known
nexthop (info->gw.ip) has preference on resolving.

Reported-by: Torsten Luettgert <ml-netfilter@enda.eu>
Bisected-by: Torsten Luettgert <ml-netfilter@enda.eu>
Tested-by: Torsten Luettgert <ml-netfilter@enda.eu>
Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pablo Neira Ayuso [Wed, 17 Oct 2012 08:59:20 +0000 (10:59 +0200)]
Merge branch 'master' of git://git./linux/kernel/git/davem/net

To obtain new flag FLOWI_FLAG_KNOWN_NH to fix netfilter's xt_TEE target.

12 years agoMerge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh
Linus Torvalds [Wed, 17 Oct 2012 02:24:00 +0000 (19:24 -0700)]
Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh

Pull SuperH updates from Paul Mundt.

The bulk of this is the UAPI disintegration for SH.

* tag 'sh-for-linus' of git://github.com/pmundt/linux-sh:
  sh: Fix up more fallout from pointless ARM __iomem churn.
  sh: Wire up kcmp syscall.
  UAPI: (Scripted) Disintegrate arch/sh/include/asm

12 years agoMerge branch 'frv' (FRV patches from David Howells)
Linus Torvalds [Wed, 17 Oct 2012 01:49:22 +0000 (18:49 -0700)]
Merge branch 'frv' (FRV patches from David Howells)

Merge emailed FRV fixes from David Howells.

* frv:
  FRV: Fix linux/elf-fdpic.h
  FRV: Fix const sections change
  FRV: Fix incorrect symbol in copy_thread()
  FRV: Fix VLIW packing constraint violation in entry.S

12 years agoFRV: Fix linux/elf-fdpic.h
David Howells [Mon, 15 Oct 2012 23:10:35 +0000 (00:10 +0100)]
FRV: Fix linux/elf-fdpic.h

It seems I accidentally switched the guard on linux/elf-fdpic.h from #ifdef
__KERNEL__ to #ifndef __KERNEL__ when attempting to expand the guarded region
to cover the elf_fdpic_params struct when doing the UAPI split - with the
result that the struct became unavailable to kernel code.

Move incorrectly guarded bits back to the kernelspace header.

Whilst we're at it, the __KERNEL__ guards can be deleted as they're no longer
necessary.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Fengguang Wu <fengguang.wu@intel.com>
cc: Lars-Peter Clausen <lars@metafoo.de>
cc: uclinux-dev@uclinux.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoFRV: Fix const sections change
Andi Kleen [Mon, 15 Oct 2012 23:10:28 +0000 (00:10 +0100)]
FRV: Fix const sections change

Add __pminitconst to fix the build, otherwise the following error can occur:

  arch/frv/kernel/setup.c:187:47: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
  arch/frv/kernel/setup.c:386:2: error: 'clock_cmodes' undeclared (first use in this function)
  arch/frv/kernel/setup.c:571:6: error: 'clock_cmodes' undeclared (first use in this function)
  make[2]: *** [arch/frv/kernel/setup.o] Error 1

http://kisskb.ellerman.id.au/kisskb/buildresult/7344691/

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoFRV: Fix incorrect symbol in copy_thread()
David Howells [Mon, 15 Oct 2012 23:10:21 +0000 (00:10 +0100)]
FRV: Fix incorrect symbol in copy_thread()

Fix an incorrect symbol in copy_thread():

  arch/frv/kernel/process.c: In function 'copy_thread':
  arch/frv/kernel/process.c:197: error: 'chilregs' undeclared (first use in this function)
  arch/frv/kernel/process.c:197: error: (Each undeclared identifier is reported only once
  arch/frv/kernel/process.c:197: error: for each function it appears in.)

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoFRV: Fix VLIW packing constraint violation in entry.S
David Howells [Mon, 15 Oct 2012 23:10:13 +0000 (00:10 +0100)]
FRV: Fix VLIW packing constraint violation in entry.S

Fix VLIW packing constraint violation in entry.S:

  arch/frv/kernel/entry.S: Assembler messages:
  arch/frv/kernel/entry.S:871: Error: VLIW packing constraint violation

When packing CALLL with OR, CALLL must go in the first slot.  The
instructions are executed simultaneously, so it doesn't matter which way
round they're packed from that point of view.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoprintk: Fix scheduling-while-atomic problem in console_cpu_notify()
Paul E. McKenney [Tue, 16 Oct 2012 04:35:59 +0000 (21:35 -0700)]
printk: Fix scheduling-while-atomic problem in console_cpu_notify()

The console_cpu_notify() function runs with interrupts disabled in the
CPU_DYING case.  It therefore cannot block, for example, as will happen
when it calls console_lock().  Therefore, remove the CPU_DYING leg of
the switch statement to avoid this problem.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Wed, 17 Oct 2012 01:14:31 +0000 (18:14 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Fixes for i915, nouveau and radeon:

   - i915: haswell stability, modeset rework fallout, ums fix
   - nouveau: misc fixes from code rework
   - radeon: pll rework fixes, more 2 level PTE cleanups.
   - core: warning fixes on 32-bit."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (31 commits)
  nouveau: fix warning on 32-bit build.
  drm/nouveau/bios: fix typo in error message
  drm/nouveau: only call ttm_agp_tt_create when __OS_HAS_AGP
  drm/nv50/fb: fix double free of vram mm
  drm/nouveau/pm: do not stop reclocking if failing to set the fan speed
  drm/nouveau/pm: fix a typo related to the move to the therm subdev
  drm/nouveau/hwmon: fix the initialization condition
  drm: fix warning on 32-bit.
  drm: radeon: fix printk format warning
  drm/radeon: fix spelling typos in debugging output
  drm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy().
  drm/radeon: check if pcie gen 2 is already enabled (v2)
  drm/radeon/cayman: set VM max pfn at MC init
  drm/radeon: separate pt alloc from lru add
  drm/radeon: don't add the IB pool to all VMs v2
  drm/radeon: allocate page tables on demand v4
  drm/radeon: update comments to clarify VM setup (v2)
  drm/radeon: allocate PPLLs from low to high
  drm/radeon: fix compilation with backlight disabled
  drm/radeon: use %zu for formatting size_t
  ...

12 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Linus Torvalds [Wed, 17 Oct 2012 01:12:38 +0000 (18:12 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs

Pull ext2, ext3, quota fixes from Jan Kara:
 "Fix three regressions caused by user namespace conversions (ext2,
  ext3, quota) and minor ext3 fix and cleanup."

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  quota: Silence warning about PRJQUOTA not being handled in need_print_warning()
  ext3: fix return values on parse_options() failure
  ext2: fix return values on parse_options() failure
  ext3: ext3_bread usage audit
  ext3: fix possible non-initialized variable on htree_dirblock_to_tree()

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Wed, 17 Oct 2012 01:11:48 +0000 (18:11 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull vfs fixes from Al Viro:
 "Fix for my braino in replace_fd(), dhowell's fix for the fallout from
  over-enthusiastic bo^Wdeclaration movements plus crapectomy that
  should've happened a long time ago (SEL_...  definitions)."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  bury SEL_{IN,OUT,EX}
  Unexport some bits of linux/fs.h
  fix a leak in replace_fd() users

12 years agoMerge tag 'pinctrl-fixes-v3.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 17 Oct 2012 01:10:26 +0000 (18:10 -0700)]
Merge tag 'pinctrl-fixes-v3.7-rc2' of git://git./linux/kernel/git/linusw/linux-pinctrl

Pull pinctrl fixes from Linus Walleij:
 "A number of pinctrl fixes for the v3.7 series:
   - duplicate includes, section markup, code mishaps
   - erroneous return value in errorpath on the bcm2835 driver
   - remove an unused sirf function that was causing build errors
   - multiple-platform compilation stubs and a missed code review
     comment fixup on the nomadik pin controller"

* tag 'pinctrl-fixes-v3.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl/nomadik: always use the simple irqdomain
  pinctrl/nomadik: provide stubs for legacy Nomadik
  pinctrl: remove duplicated include from pinctrl-xway.c
  pinctrl: sirf: remove sirfsoc_gpio_set_pull function
  pinctrl: fix return value in bcm2835_pinctrl_probe()
  pinctrl: remove duplicated include from pinctrl-bcm2835.c
  pinctrl: bcm2835: Use existing pointer to struct device
  pinctrl: samsung: use __devinit section for init code

12 years agoMerge branch 'ipmi' (IPMI patches from Corey Minyard)
Linus Torvalds [Wed, 17 Oct 2012 01:08:21 +0000 (18:08 -0700)]
Merge branch 'ipmi' (IPMI patches from Corey Minyard)

Merge emailed patches from Corey Minyard:
 "Remove some bogus docs, Fix ACPI/IPMI interactions, fix some warnings,
  and add register spacing detection for PCI interfaces."

* ipmi:
  IPMI: Detect register spacing on PCI interfaces
  IPMI: Fix some uninitialized warning
  IPMI: Change link order
  ACPI: Reorder IPMI driver before any other ACPI drivers
  IPMI: Remove SMBus driver info from the docs

12 years agoIPMI: Detect register spacing on PCI interfaces
Corey Minyard [Tue, 16 Oct 2012 20:53:40 +0000 (15:53 -0500)]
IPMI: Detect register spacing on PCI interfaces

The IPMI spec defines a way to detect register spacing for PCI interfaces,
so implement it.

Signed-off-by: Steven Hsieh <sshsieh@broadcom.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoIPMI: Fix some uninitialized warning
Corey Minyard [Tue, 16 Oct 2012 20:53:39 +0000 (15:53 -0500)]
IPMI: Fix some uninitialized warning

There was a spot where the compiler couldn't tell some variables
would be set.  So initialize them to make the warning go away.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoIPMI: Change link order
Matthew Garrett [Tue, 16 Oct 2012 20:53:38 +0000 (15:53 -0500)]
IPMI: Change link order

IPMI must be initialised before ACPI in order to ensure that any IPMI
services are available before ACPI driver initialisation attempts to use
any IPMI operation regions.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoACPI: Reorder IPMI driver before any other ACPI drivers
Matthew Garrett [Tue, 16 Oct 2012 20:53:37 +0000 (15:53 -0500)]
ACPI: Reorder IPMI driver before any other ACPI drivers

Drivers may make calls that require the ACPI IPMI driver to have been
initialised already, so make sure that it appears earlier in the build
order.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoIPMI: Remove SMBus driver info from the docs
Corey Minyard [Tue, 16 Oct 2012 20:53:36 +0000 (15:53 -0500)]
IPMI: Remove SMBus driver info from the docs

Some documentation for the SMBus driver is in the IPMI docs, but that
code is not in the kernel tree at this point.  So remove the docs to
avoid confusion.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMAINTAINERS: change email after moving for LED subsystem maintaining
Bryan Wu [Tue, 16 Oct 2012 19:55:19 +0000 (12:55 -0700)]
MAINTAINERS: change email after moving for LED subsystem maintaining

Signed-off-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agomm, mempolicy: fix printing stack contents in numa_maps
David Rientjes [Wed, 17 Oct 2012 00:31:23 +0000 (17:31 -0700)]
mm, mempolicy: fix printing stack contents in numa_maps

When reading /proc/pid/numa_maps, it's possible to return the contents of
the stack where the mempolicy string should be printed if the policy gets
freed from beneath us.

This happens because mpol_to_str() may return an error the
stack-allocated buffer is then printed without ever being stored.

There are two possible error conditions in mpol_to_str():

 - if the buffer allocated is insufficient for the string to be stored,
   and

 - if the mempolicy has an invalid mode.

The first error condition is not triggered in any of the callers to
mpol_to_str(): at least 50 bytes is always allocated on the stack and this
is sufficient for the string to be written.  A future patch should convert
this into BUILD_BUG_ON() since we know the maximum strlen possible, but
that's not -rc material.

The second error condition is possible if a race occurs in dropping a
reference to a task's mempolicy causing it to be freed during the read().
The slab poison value is then used for the mode and mpol_to_str() returns
-EINVAL.

This race is only possible because get_vma_policy() believes that
mm->mmap_sem protects task->mempolicy, which isn't true.  The exit path
does not hold mm->mmap_sem when dropping the reference or setting
task->mempolicy to NULL: it uses task_lock(task) instead.

Thus, it's required for the caller of a task mempolicy to hold
task_lock(task) while grabbing the mempolicy and reading it.  Callers with
a vma policy store their mempolicy earlier and can simply increment the
reference count so it's guaranteed not to be freed.

Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agosparc64: Fix bit twiddling in sparc_pmu_enable_event().
David S. Miller [Tue, 16 Oct 2012 20:05:25 +0000 (13:05 -0700)]
sparc64: Fix bit twiddling in sparc_pmu_enable_event().

There was a serious disconnect in the logic happening in
sparc_pmu_disable_event() vs. sparc_pmu_enable_event().

Event disable is implemented by programming a NOP event into the PCR.

However, event enable was not reversing this operation.  Instead, it
was setting the User/Priv/Hypervisor trace enable bits.

That's not sparc_pmu_enable_event()'s job, that's what
sparc_pmu_enable() and sparc_pmu_disable() do .

The intent of sparc_pmu_enable_event() is clear, since it first clear
out the event type encoding field.  So fix this by OR'ing in the event
encoding rather than the trace enable bits.

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: addrconf: fix /proc/net/if_inet6
Eric Dumazet [Tue, 16 Oct 2012 07:37:27 +0000 (07:37 +0000)]
ipv6: addrconf: fix /proc/net/if_inet6

Commit 1d5783030a1 (ipv6/addrconf: speedup /proc/net/if_inet6 filling)
added bugs hiding some devices from if_inet6 and breaking applications.

"ip -6 addr" could still display all IPv6 addresses, while "ifconfig -a"
couldnt.

One way to reproduce the bug is by starting in a shell :

unshare -n /bin/bash
ifconfig lo up

And in original net namespace, lo device disappeared from if_inet6

Reported-by: Jan Hinnerk Stosch <janhinnerk.stosch@gmail.com>
Tested-by: Jan Hinnerk Stosch <janhinnerk.stosch@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mihai Maruseac <mihai.maruseac@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agobnx2x: fix handling mf storage modes
Dmitry Kravkov [Tue, 16 Oct 2012 01:28:27 +0000 (01:28 +0000)]
bnx2x: fix handling mf storage modes

Since commit a3348722 AFEX FCoE function is continuously reset.
The patch prevents the resetting and removes debug print
to stop garbaging syslog.

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoqeth: fix deadlock between recovery and bonding driver
Stefan Raspl [Mon, 15 Oct 2012 19:21:18 +0000 (19:21 +0000)]
qeth: fix deadlock between recovery and bonding driver

The recovery thread, when failing, tears down the respective interface. To do
so, it needs to obtain the rtnl lock first, as the interface configuration is
changed.
If another process tries to modify an interface setting at the same time, that
process can obtain the rtnl lock first, but the respective callback in the qeth
driver will block until recovery has completed - which cannot happen since the
calling process already obtained it.
In one particular case, the bonding driver acquired the rtnl lock to modify the
card's MAC address, while the recovery failed at the same time due to the card
being removed. Hence qeth_l2_set_mac_address (implicitly holding the rtnl lock)
was waiting on qeth_l2_recover, which deadlocked when waiting on the rtnl lock.
This patch uses rtnl_trylock instead of rtnl_lock in the recovery thread. If the
lock cannot be obtained, the interface will be left up, but the card state
remains in CARD_STATE_RECOVER, which will prevent any further activities on the
card.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agosmsgiucv: reestablish IUCV path after resume
Hendrik Brueckner [Mon, 15 Oct 2012 19:21:17 +0000 (19:21 +0000)]
smsgiucv: reestablish IUCV path after resume

smsg_pm_restore_thaw() uses wrong checking before reconnecting
the IUCV path to *MSG. It is corrected with this patch.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agosctp: fix call to SCTP_CMD_PROCESS_SACK in sctp_cmd_interpreter()
Zijie Pan [Mon, 15 Oct 2012 03:56:39 +0000 (03:56 +0000)]
sctp: fix call to SCTP_CMD_PROCESS_SACK in sctp_cmd_interpreter()

Bug introduced by commit edfee0339e681a784ebacec7e8c2dc97dc6d2839
(sctp: check src addr when processing SACK to update transport state)

Signed-off-by: Zijie Pan <zijie.pan@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agovlan: fix bond/team enslave of vlan challenged slave/port
Jiri Pirko [Sun, 14 Oct 2012 04:30:56 +0000 (04:30 +0000)]
vlan: fix bond/team enslave of vlan challenged slave/port

In vlan_uses_dev() check for number of vlan devs rather than existence
of vlan_info. The reason is that vlan id 0 is there without appropriate
vlan dev on it by default which prevented from enslaving vlan challenged
dev.

Reported-by: Jon Stanley <jstanley@rmrf.net>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMAINTAINERS: Add explicit section for IPSEC networking.
David S. Miller [Tue, 16 Oct 2012 18:08:40 +0000 (14:08 -0400)]
MAINTAINERS: Add explicit section for IPSEC networking.

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agobury SEL_{IN,OUT,EX}
Al Viro [Tue, 16 Oct 2012 17:37:17 +0000 (13:37 -0400)]
bury SEL_{IN,OUT,EX}

Had not been used for more than a decade and half; it used
to be a part of (in-kernel) ->select() API and it has been pining
for fjords since 2.1.23pre1.  This is an ex-parrot...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
12 years agoUnexport some bits of linux/fs.h
David Howells [Mon, 15 Oct 2012 15:40:35 +0000 (16:40 +0100)]
Unexport some bits of linux/fs.h

There are some bits of linux/fs.h which are only used within the kernel and
shouldn't be in the UAPI.  Move these from uapi/linux/fs.h into linux/fs.h.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
12 years agofix a leak in replace_fd() users
Al Viro [Tue, 16 Oct 2012 17:30:07 +0000 (13:30 -0400)]
fix a leak in replace_fd() users

replace_fd() began with "eats a reference, tries to insert into
descriptor table" semantics; at some point I'd switched it to
much saner current behaviour ("try to insert into descriptor
table, grabbing a new reference if inserted; caller should do
fput() in any case"), but forgot to update the callers.
Mea culpa...

[Spotted by Pavel Roskin, who has really weird system with pipe-fed
coredumps as part of what he considers a normal boot ;-)]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
12 years agosparc64: Add global PMU register dumping via sysrq.
David S. Miller [Tue, 16 Oct 2012 16:34:01 +0000 (09:34 -0700)]
sparc64: Add global PMU register dumping via sysrq.

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonouveau: fix warning on 32-bit build.
Dave Airlie [Tue, 16 Oct 2012 06:40:53 +0000 (16:40 +1000)]
nouveau: fix warning on 32-bit build.

Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agoMerge branch 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux...
Dave Airlie [Tue, 16 Oct 2012 06:33:48 +0000 (16:33 +1000)]
Merge branch 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes

minor set of nouveau fixes.

* 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau/bios: fix typo in error message
  drm/nouveau: only call ttm_agp_tt_create when __OS_HAS_AGP
  drm/nv50/fb: fix double free of vram mm
  drm/nouveau/pm: do not stop reclocking if failing to set the fan speed
  drm/nouveau/pm: fix a typo related to the move to the therm subdev
  drm/nouveau/hwmon: fix the initialization condition

12 years agodrm/nouveau/bios: fix typo in error message
Ben Skeggs [Tue, 16 Oct 2012 06:25:08 +0000 (16:25 +1000)]
drm/nouveau/bios: fix typo in error message

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
12 years agodrm/nouveau: only call ttm_agp_tt_create when __OS_HAS_AGP
Max Filippov [Sat, 13 Oct 2012 21:58:26 +0000 (01:58 +0400)]
drm/nouveau: only call ttm_agp_tt_create when __OS_HAS_AGP

ttm_agp_tt_create is itself defined under CONFIG_AGP, so there's no
point calling it otherwise.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
12 years agodrm/nv50/fb: fix double free of vram mm
Marcin Slusarz [Thu, 11 Oct 2012 21:53:48 +0000 (23:53 +0200)]
drm/nv50/fb: fix double free of vram mm

nouveau_fb_destroy already calls nouveau_mm_fini on vram mm.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
12 years agodrm/nouveau/pm: do not stop reclocking if failing to set the fan speed
Martin Peres [Wed, 3 Oct 2012 23:00:13 +0000 (01:00 +0200)]
drm/nouveau/pm: do not stop reclocking if failing to set the fan speed

With the introduction of fan management modes, fan may not be drivable.
We should allow reclocking nonetheless.

This return was stupid to begin with since it may have left the card
in an intermediate state (clocks corresponding to a perflvl and voltage
corresponding to another one). The reclocking code will need to be
rewritten in a near-future in order to provide a better error handling.

Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
12 years agodrm/nouveau/pm: fix a typo related to the move to the therm subdev
Martin Peres [Wed, 3 Oct 2012 22:44:19 +0000 (00:44 +0200)]
drm/nouveau/pm: fix a typo related to the move to the therm subdev

Reported-by: Vekin on IRC
Reported-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
12 years agodrm/nouveau/hwmon: fix the initialization condition
Martin Peres [Wed, 3 Oct 2012 22:28:21 +0000 (00:28 +0200)]
drm/nouveau/hwmon: fix the initialization condition

Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
12 years agodrm: fix warning on 32-bit.
Dave Airlie [Tue, 16 Oct 2012 00:28:21 +0000 (10:28 +1000)]
drm: fix warning on 32-bit.

This cast was causing a warning on 32-bit builds.

Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm: radeon: fix printk format warning
Randy Dunlap [Tue, 16 Oct 2012 00:15:45 +0000 (10:15 +1000)]
drm: radeon: fix printk format warning

drivers/gpu/drm/radeon/radeon_atpx_handler.c:151:3: warning: format '%lu' expects type 'long unsigned int', but argument 2 has type 'size_t'

[airlied: Alex had others fixed already, except for atpx one]

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agoMerge branch 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Tue, 16 Oct 2012 00:13:24 +0000 (10:13 +1000)]
Merge branch 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

Alex writes:
"This is the first -fixes pull for 3.7.  I would have preferred
to have gotten it out a bit sooner, but I was on holiday last week.
- Cleanup of the new 2 level page table code it get it in
  better shape and using less memory.
- Fix some display issues related to the PLL rework.
- Fix some cmpiler warnings and errors with certain config
  options.
- Other misc bug fixes."

* 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: fix spelling typos in debugging output
  drm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy().
  drm/radeon: check if pcie gen 2 is already enabled (v2)
  drm/radeon/cayman: set VM max pfn at MC init
  drm/radeon: separate pt alloc from lru add
  drm/radeon: don't add the IB pool to all VMs v2
  drm/radeon: allocate page tables on demand v4
  drm/radeon: update comments to clarify VM setup (v2)
  drm/radeon: allocate PPLLs from low to high
  drm/radeon: fix compilation with backlight disabled
  drm/radeon: use %zu for formatting size_t

12 years agoMerge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel...
Dave Airlie [Tue, 16 Oct 2012 00:11:29 +0000 (10:11 +1000)]
Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes

Daniel writes:
"- some register magic to fix hsw crw (Paulo&Ben)
- fix backlight destruction for cpu edp (Jani)
- fix gen ch7xxx dvo ->get_hw_state
- fixup the plane->pipe fixup code, the broken version massively angers
  the modeset sanity checks
- kill pipe A quirk for i855gm, otherwise I get a black screen with the
  above patch
- fixup for gem_get_page helper (Chris)
- fixup guardband clipping w/a (Ken), without this mesa master can erronously
  drop vertices on snb, mesa 9.0 has the optimization reverted
- another pageflip vs. modeset fix
- kill bogus BUG_ON which broke ums+gem from Willy Tarreau (gasp, people
  are still using this!)"

* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: fix non-DP-D eDP backlight cleanup and module reload
  drm/i915: HSW CRW stability magic
  drm/i915/dvo-ch7xxx: fix get_hw_state
  drm/i915: fixup the plane->pipe fixup code
  drm/i915: rip out the pipe A quirk for i855gm
  drm/i915: disable wc gtt pte mappings on gen2
  drm/i915: fixup i915_gem_object_get_page inline helper
  drm/i915: Disallow preallocation of requests
  drm/i915: Set guardband clipping workaround bit in the right register.
  drm/i915: paper over a pipe-enable vs pageflip race
  drm/i915: remove useless BUG_ON which caused a regression in 3.5.

12 years agothermal, cpufreq: Fix build when CPU_FREQ_TABLE isn't configured
David Rientjes [Mon, 15 Oct 2012 20:40:15 +0000 (13:40 -0700)]
thermal, cpufreq: Fix build when CPU_FREQ_TABLE isn't configured

Commit 023614183768 ("thermal: add generic cpufreq cooling
implementation") requires cpufreq_frequency_get_table(), but that
function is only defined for CONFIG_CPU_FREQ_TABLE resulting in the
following build error:

  drivers/built-in.o: In function `cpufreq_get_max_state':
  drivers/thermal/cpu_cooling.c:259: undefined reference to `cpufreq_frequency_get_table'
  drivers/built-in.o: In function `get_cpu_frequency':
  drivers/thermal/cpu_cooling.c:129: undefined reference to `cpufreq_frequency_get_table'

Fix it by selecting CONFIG_CPU_FREQ_TABLE for such a configuration.

It turns out CONFIG_EXYNOS_THERMAL also needs CONFIG_CPU_FREQ_TABLE, so
select it there as well.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agokbuild: Fix accidental revert in commit fe04ddf
Michal Marek [Mon, 15 Oct 2012 19:16:56 +0000 (21:16 +0200)]
kbuild: Fix accidental revert in commit fe04ddf

Commit fe04ddf7c291 ("kbuild: Do not package /boot and /lib in make
tar-pkg") accidentally reverted two previous kbuild commits.  I don't
know what I was thinking.

This brings back changes made by commits 24cc7fb69a5b ("x86/kbuild:
archscripts depends on scripts_basic") and c1c1a59e37da ("firmware: fix
directory creation rule matching with make 3.80")

Reported-by: Jan Beulich <JBeulich@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agodrm/radeon: fix spelling typos in debugging output
Thomas Friebel [Mon, 15 Oct 2012 17:16:22 +0000 (13:16 -0400)]
drm/radeon: fix spelling typos in debugging output

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
12 years agodrm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy().
Egbert Eich [Mon, 15 Oct 2012 06:21:39 +0000 (08:21 +0200)]
drm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy().

radeon_i2c_fini() walks thru the list of I2C bus recs rdev->i2c_bus[]
to destroy each of them.
radeon_ext_tmds_enc_destroy() however also has code to destroy it's
associated I2C bus rec which has been obtained by radeon_i2c_lookup()
and is therefore also in the i2c_bus[] list.
This causes a double free resulting in a kernel panic when unloading
the radeon driver.
Removing destroy code from radeon_ext_tmds_enc_destroy() fixes this
problem.

agd5f: fix compiler warning

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
12 years agodrm/radeon: check if pcie gen 2 is already enabled (v2)
Alex Deucher [Mon, 8 Oct 2012 21:46:27 +0000 (17:46 -0400)]
drm/radeon: check if pcie gen 2 is already enabled (v2)

If so, skip enabling it to save time.

v2: coding style fixes

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
12 years agodrm/radeon/cayman: set VM max pfn at MC init
Alex Deucher [Mon, 8 Oct 2012 16:15:13 +0000 (12:15 -0400)]
drm/radeon/cayman: set VM max pfn at MC init

No need to emit them at VM flush as we no longer use
variable sized page tables now that we support 2 level
page tables.  This matches the behavior of SI (which
does not support variable sized page tables).

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
12 years agodrm/radeon: separate pt alloc from lru add
Christian König [Tue, 9 Oct 2012 11:31:19 +0000 (13:31 +0200)]
drm/radeon: separate pt alloc from lru add

Make it possible to allocate a persistent page table.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
12 years agodrm/radeon: don't add the IB pool to all VMs v2
Christian König [Tue, 9 Oct 2012 11:31:18 +0000 (13:31 +0200)]
drm/radeon: don't add the IB pool to all VMs v2

We want to use VMs without the IB pool in the future.

v2: also remove it from radeon_vm_finish.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
12 years agodrm/radeon: allocate page tables on demand v4
Christian König [Tue, 9 Oct 2012 11:31:17 +0000 (13:31 +0200)]
drm/radeon: allocate page tables on demand v4

Based on Dmitries work, but splitting the code into page
directory and page table handling makes it far more
readable and (hopefully) more reliable.

Allocations of page tables are made from the SA on demand,
that should still work fine since all page tables are of
the same size.

Also using the fact that allocations from the SA are mostly
continuously (except for end of buffer wraps and under very
high memory pressure) to group updates send to the chipset
specific code into larger chunks.

v3: mostly a rewrite of Dmitries previous patch.
v4: fix some typos and coding style

Signed-off-by: Dmitry Cherkasov <Dmitrii.Cherkasov@amd.com>
Signed-off-by: Christian König <deathsimple@vodafone.de>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
12 years agodrm/radeon: update comments to clarify VM setup (v2)
Alex Deucher [Mon, 8 Oct 2012 13:45:46 +0000 (09:45 -0400)]
drm/radeon: update comments to clarify VM setup (v2)

The actual set up and assignment of VM page tables
is done on the fly in radeon_gart.c.

v2: update vm size comments

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
12 years agodrm/radeon: allocate PPLLs from low to high
Alex Deucher [Fri, 5 Oct 2012 14:22:02 +0000 (10:22 -0400)]
drm/radeon: allocate PPLLs from low to high

The order shouldn't matter, but there have been problems
reported on certain older asics.  This behaves more
like the original code before the PPLL allocation
rework.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
12 years agodrm/radeon: fix compilation with backlight disabled
Alex Deucher [Thu, 4 Oct 2012 13:10:10 +0000 (09:10 -0400)]
drm/radeon: fix compilation with backlight disabled

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
12 years agodrm/radeon: use %zu for formatting size_t
Luca Tettamanti [Wed, 3 Oct 2012 13:00:19 +0000 (15:00 +0200)]
drm/radeon: use %zu for formatting size_t

Fixes compiler warnings on 32bit.

Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
12 years agodocbook: networking: fix file paths for uapi headers
Randy Dunlap [Mon, 15 Oct 2012 01:50:05 +0000 (18:50 -0700)]
docbook: networking: fix file paths for uapi headers

Update file paths in Documentation/DocBook/networking.tmpl for uapi headers.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agomm: huge_memory: Fix build error.
Ralf Baechle [Mon, 15 Oct 2012 11:44:56 +0000 (13:44 +0200)]
mm: huge_memory: Fix build error.

Certain configurations won't implicitly pull in <linux/pagemap.h> resulting
in the following build error:

  mm/huge_memory.c: In function 'release_pte_page':
  mm/huge_memory.c:1697:2: error: implicit declaration of function 'unlock_page' [-Werror=implicit-function-declaration]
  mm/huge_memory.c: In function '__collapse_huge_page_isolate':
  mm/huge_memory.c:1757:3: error: implicit declaration of function 'trylock_page' [-Werror=implicit-function-declaration]
  cc1: some warnings being treated as errors

Reported-by: David Daney <david.daney@cavium.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoARM: fix oops on initial entry to userspace with Thumb2 kernels
Russell King [Sun, 14 Oct 2012 23:16:49 +0000 (00:16 +0100)]
ARM: fix oops on initial entry to userspace with Thumb2 kernels

Daniel Mack reports an oops at boot with the latest kernels:

  Internal error: Oops - undefined instruction: 0 [#1] SMP THUMB2
  Modules linked in:
  CPU: 0    Not tainted  (3.6.0-11057-g584df1d #145)
  PC is at cpsw_probe+0x45a/0x9ac
  LR is at trace_hardirqs_on_caller+0x8f/0xfc
  pc : [<c03493de>]    lr : [<c005e81f>]    psr: 60000113
  sp : cf055fb0  ip : 00000000  fp : 00000000
  r10: 00000000  r9 : 00000000  r8 : 00000000
  r7 : 00000000  r6 : 00000000  r5 : c0344555  r4 : 00000000
  r3 : cf057a40  r2 : 00000000  r1 : 00000001  r0 : 00000000
  Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM Segment user
  Control: 50c5387d  Table: 8f3f4019  DAC: 00000015
  Process init (pid: 1, stack limit = 0xcf054240)
  Stack: (0xcf055fb0 to 0xcf056000)
  5fa0:                                     00000001 00000000 00000000 00000000
  5fc0: cf055fb0 c000d1a8 00000000 00000000 00000000 00000000 00000000 00000000
  5fe0: 00000000 be9b3f10 00000000 b6f6add0 00000010 00000000 aaaabfaf a8babbaa

The analysis of this is as follows.  In init/main.c, we issue:

kernel_thread(kernel_init, NULL, CLONE_FS | CLONE_SIGHAND);

This creates a new thread, which falls through to the ret_from_fork
assembly, with r4 set NULL and r5 set to kernel_init.  You can see
this in your oops dump register set - r5 is 0xc0344555, which is the
address of kernel_init plus 1 which marks the function as Thumb code.

Now, let's look at this code a little closer - this is what the
disassembly looks like:

  c000d180 <ret_from_fork>:
  c000d180:       f03a fe08       bl      c0047d94 <schedule_tail>
  c000d184:       2d00            cmp     r5, #0
  c000d186:       bf1e            ittt    ne
  c000d188:       4620            movne   r0, r4
  c000d18a:       46fe            movne   lr, pc <-- XXXXXXX
  c000d18c:       46af            movne   pc, r5
  c000d18e:       46e9            mov     r9, sp
  c000d190:       ea4f 3959       mov.w   r9, r9, lsr #13
  c000d194:       ea4f 3949       mov.w   r9, r9, lsl #13
  c000d198:       e7c8            b.n     c000d12c <ret_to_user>
  c000d19a:       bf00            nop
  c000d19c:       f3af 8000       nop.w

This code was introduced in 9fff2fa0db911 (arm: switch to saner
kernel_execve() semantics).  I have marked one instruction, and it's
the significant one - I'll come back to that later.

Eventually, having had a successful call to kernel_execve(), kernel_init()
returns zero.

In returning, it uses the value in 'lr' which was set by the instruction
I marked above.  Unfortunately, this causes lr to contain 0xc000d18e -
an even address.  This switches the ISA to ARM on return but with a non
word aligned PC value.

So, what do we end up executing?  Well, not the instructions above - yes
the opcodes, but they don't mean the same thing in ARM mode.  In ARM mode,
it looks like this instead:

  c000d18c:       46e946af        strbtmi r4, [r9], pc, lsr #13
  c000d190:       3959ea4f        ldmdbcc r9, {r0, r1, r2, r3, r6, r9, fp, sp, lr, pc}^
  c000d194:       3949ea4f        stmdbcc r9, {r0, r1, r2, r3, r6, r9, fp, sp, lr, pc}^
  c000d198:       bf00e7c8        svclt   0x0000e7c8
  c000d19c:       8000f3af        andhi   pc, r0, pc, lsr #7
  c000d1a0:       e88db092        stm     sp, {r1, r4, r7, ip, sp, pc}
  c000d1a4:       46e81fff                        ; <UNDEFINED> instruction: 0x46e81fff
  c000d1a8:       8a00f3ef        bhi     0xc004a16c
  c000d1ac:       0a0cf08a        beq     0xc03493dc

I have included more above, because it's relevant.  The PSR flags which
we can see in the oops dump are nZCv, so Z and C are set.

All the above ARM instructions are not executed, except for two.
c000d1a0, which has no writeback, and writes below the current stack
pointer (and that data is lost when we take the next exception.) The
other instruction which is executed is c000d1ac, which takes us to...
0xc03493dc.  However, remember that bit 1 of the PC got set.  So that
makes the PC value 0xc03493de.

And that value is the value we find in the oops dump for PC.  What is
the instruction here when interpreted in ARM mode?

       0:       f71e150c                ; <UNDEFINED> instruction: 0xf71e150c

and there we have our undefined instruction (remember that the 'never'
condition code, 0xf, has been deprecated and is now always executed as
it is now being used for additional instructions.)

This path also nicely explains the state of the stack we see in the oops
dump too.

The above is a consistent and sane story for how we got to the oops
dump, which all stems from the instruction at 0xc000d18a being wrong.

Reported-by: Daniel Mack <zonque@gmail.com>
Tested-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agonetfilter: xt_nat: fix incorrect hooks for SNAT and DNAT targets
Elison Niven [Mon, 15 Oct 2012 00:44:48 +0000 (00:44 +0000)]
netfilter: xt_nat: fix incorrect hooks for SNAT and DNAT targets

In (c7232c9 netfilter: add protocol independent NAT core), the
hooks were accidentally modified:

SNAT hooks are POST_ROUTING and LOCAL_IN (before it was LOCAL_OUT).
DNAT hooks are PRE_ROUTING and LOCAL_OUT (before it was LOCAL_IN).

Signed-off-by: Elison Niven <elison.niven@cyberoam.com>
Signed-off-by: Sanket Shah <sanket.shah@cyberoam.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agonetfilter: xt_CT: fix timeout setting with IPv6
Pablo Neira Ayuso [Thu, 11 Oct 2012 08:49:12 +0000 (10:49 +0200)]
netfilter: xt_CT: fix timeout setting with IPv6

This patch fixes ip6tables and the CT target if it is used to set
some custom conntrack timeout policy for IPv6.

Use xt_ct_find_proto which already handles the ip6tables case for us.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
12 years agopinctrl/nomadik: always use the simple irqdomain
Linus Walleij [Thu, 11 Oct 2012 14:33:44 +0000 (16:33 +0200)]
pinctrl/nomadik: always use the simple irqdomain

Since the simple irqdomain will fall back to a linear domain
if the first_irq provided is <= 0, just use this, just make
sure the first_irq is negative in the device tree case.

Cc: Rob Herring <rob.herring@calxeda.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agopinctrl/nomadik: provide stubs for legacy Nomadik
Linus Walleij [Thu, 11 Oct 2012 12:33:42 +0000 (14:33 +0200)]
pinctrl/nomadik: provide stubs for legacy Nomadik

The compilation of the pinctrl driver failed on the legacy
Nomadik NHK8815 platform because it was not providing the PRCMU
interfaces needed to support the extended alternate functions
used by the ux500 series.

Solve this by providing some stubs for the legacy platform, to
avoid too much #ifdefs in the code per se. Theoretically this
actually allows the Nomadik and Ux500 to have a single kernel
image with support for the PRCM registers on the Ux500 (though
they have incompatible archs, but the spirit is there).

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>