9 years agoNFS: Add helper functions for allocating filehandles and fattr structs
Trond Myklebust [Fri, 16 Apr 2010 20:22:45 +0000]
NFS: Add helper functions for allocating filehandles and fattr structs

NFS Filehandles and struct fattr are really too large to be allocated on
the stack. This patch adds in a couple of helper functions to allocate them
dynamically instead.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Advertise rc4-hmac enctype support in the rpcsec_gss/krb5 upcall
Trond Myklebust [Thu, 8 Apr 2010 18:25:20 +0000]
gss_krb5: Advertise rc4-hmac enctype support in the rpcsec_gss/krb5 upcall

Update the upcall info indicating which Kerberos enctypes
the kernel supports

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Add support for rc4-hmac encryption
Kevin Coffman [Wed, 17 Mar 2010 17:03:06 +0000]
gss_krb5: Add support for rc4-hmac encryption

Add necessary changes to add kernel support for the rc4-hmac Kerberos
encryption type used by Microsoft and described in rfc4757.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Use confounder length in wrap code
Kevin Coffman [Wed, 17 Mar 2010 17:03:05 +0000]
gss_krb5: Use confounder length in wrap code

All encryption types use a confounder at the beginning of the
wrap token.  In all encryption types except arcfour-hmac, the
confounder is the same as the blocksize.  arcfour-hmac has a
blocksize of one, but uses an eight byte confounder.

Add an entry to the crypto framework definitions for the
confounder length and change the wrap/unwrap code to use
the confounder length rather than assuming it is always
the blocksize.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogssd_krb5: More arcfour-hmac support
Kevin Coffman [Wed, 17 Mar 2010 17:03:04 +0000]
gssd_krb5: More arcfour-hmac support

For the arcfour-hmac support, the make_seq_num and get_seq_num
functions need access to the kerberos context structure.
This will be used in a later patch.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Save the raw session key in the context
Kevin Coffman [Wed, 17 Mar 2010 17:03:03 +0000]
gss_krb5: Save the raw session key in the context

This is needed for deriving arcfour-hmac keys "on the fly"
using the sequence number or checksu

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogssd_krb5: arcfour-hmac support
Kevin Coffman [Wed, 17 Mar 2010 17:03:02 +0000]
gssd_krb5: arcfour-hmac support

For arcfour-hmac support, the make_checksum function needs a usage
field to correctly calculate the checksum differently for MIC and
WRAP tokens.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Advertise AES enctype support in the rpcsec_gss/krb5 upcall
Trond Myklebust [Thu, 8 Apr 2010 18:23:06 +0000]
gss_krb5: Advertise AES enctype support in the rpcsec_gss/krb5 upcall

Update upcall info indicating which Kerberos enctypes
the kernel supports

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: add remaining pieces to enable AES encryption support
Kevin Coffman [Wed, 17 Mar 2010 17:03:00 +0000]
gss_krb5: add remaining pieces to enable AES encryption support

Add the remaining pieces to enable support for Kerberos AES
encryption types.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: add support for new token formats in rfc4121
Kevin Coffman [Wed, 17 Mar 2010 17:02:59 +0000]
gss_krb5: add support for new token formats in rfc4121

This is a step toward support for AES encryption types which are
required to use the new token formats defined in rfc4121.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
[SteveD: Fixed a typo in gss_verify_mic_v2()]
Signed-off-by: Steve Dickson <steved@redhat.com>
[Trond: Got rid of the TEST_ROTATE/TEST_EXTRA_COUNT crap]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agoxdr: Add an export for the helper function write_bytes_to_xdr_buf()
Kevin Coffman [Wed, 17 Mar 2010 17:02:58 +0000]
xdr: Add an export for the helper function write_bytes_to_xdr_buf()

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Advertise triple-des enctype support in the rpcsec_gss/krb5 upcall
Trond Myklebust [Thu, 8 Apr 2010 18:21:12 +0000]
gss_krb5: Advertise triple-des enctype support in the rpcsec_gss/krb5 upcall

Update the upcall info indicating which Kerberos enctypes the kernel
supports.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: add support for triple-des encryption
Kevin Coffman [Wed, 17 Mar 2010 17:02:55 +0000]
gss_krb5: add support for triple-des encryption

Add the final pieces to support the triple-des encryption type.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Add upcall info indicating supported kerberos enctypes
Trond Myklebust [Thu, 8 Apr 2010 18:09:58 +0000]
gss_krb5: Add upcall info indicating supported kerberos enctypes

The text based upcall now indicates which Kerberos encryption types are
supported by the kernel rpcsecgss code.  This is used by gssd to
determine which encryption types it should attempt to negotiate
when creating a context with a server.

The server principal's database and keytab encryption types are
what limits what it should negotiate.  Therefore, its keytab
should be created with only the enctypes listed by this file.

Currently we support des-cbc-crc, des-cbc-md4 and des-cbc-md5

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: handle new context format from gssd
Kevin Coffman [Wed, 17 Mar 2010 17:02:54 +0000]
gss_krb5: handle new context format from gssd

For encryption types other than DES, gssd sends down context information
in a new format.  This new format includes the information needed to
support the new Kerberos GSS-API tokens defined in rfc4121.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: import functionality to derive keys into the kernel
Kevin Coffman [Wed, 17 Mar 2010 17:02:53 +0000]
gss_krb5: import functionality to derive keys into the kernel

Import the code to derive Kerberos keys from a base key into the
kernel.  This will allow us to change the format of the context
information sent down from gssd to include only a single key.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: add ability to have a keyed checksum (hmac)
Kevin Coffman [Wed, 17 Mar 2010 17:02:52 +0000]
gss_krb5: add ability to have a keyed checksum (hmac)

Encryption types besides DES may use a keyed checksum (hmac).
Modify the make_checksum() function to allow for a key
and take care of enctype-specific processing such as truncating
the resulting hash.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: introduce encryption type framework
Kevin Coffman [Wed, 17 Mar 2010 17:02:51 +0000]
gss_krb5: introduce encryption type framework

Add enctype framework and change functions to use the generic
values from it rather than the values hard-coded for des.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: prepare for new context format
Kevin Coffman [Wed, 17 Mar 2010 17:02:50 +0000]
gss_krb5: prepare for new context format

Prepare for new context format by splitting out the old "v1"
context processing function

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: split up functions in preparation of adding new enctypes
Kevin Coffman [Wed, 17 Mar 2010 17:02:49 +0000]
gss_krb5: split up functions in preparation of adding new enctypes

Add encryption type to the krb5 context structure and use it to switch
to the correct functions depending on the encryption type.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Don't expect blocksize to always be 8 when calculating padding
J. Bruce Fields [Wed, 17 Mar 2010 17:02:48 +0000]
gss_krb5: Don't expect blocksize to always be 8 when calculating padding

Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Added and improved code comments
Kevin Coffman [Wed, 17 Mar 2010 17:02:47 +0000]
gss_krb5: Added and improved code comments

Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss_krb5: Introduce encryption type framework
Kevin Coffman [Wed, 17 Mar 2010 17:02:46 +0000]
gss_krb5: Introduce encryption type framework

Make the client and server code consistent regarding the extra buffer
space made available for the auth code when wrapping data.

Add some comments/documentation about the available buffer space
in the xdr_buf head and tail when gss_wrap is called.

Add a compile-time check to make sure we are not exceeding the available
buffer space.

Add a central function to shift head data.

Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agoMerge branch 'for-linus' of git://git.infradead.org/users/eparis/notify
Linus Torvalds [Fri, 14 May 2010 18:49:42 +0000]
Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify

* 'for-linus' of git://git.infradead.org/users/eparis/notify:
  inotify: don't leak user struct on inotify release
  inotify: race use after free/double free in inotify inode marks
  inotify: clean up the inotify_add_watch out path
  Inotify: undefined reference to `anon_inode_getfd'

Manual merge to remove duplicate "select ANON_INODES" from Kconfig file

9 years agoMerge branch 'davinci-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 14 May 2010 18:43:52 +0000]
Merge branch 'davinci-fixes-for-linus-2' of git://git./linux/kernel/git/khilman/linux-davinci

* 'davinci-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci:
  DA830: fix USB 2.0 clock entry

9 years agoDA830: fix USB 2.0 clock entry
Sergei Shtylyov [Thu, 13 May 2010 18:51:51 +0000]
DA830: fix USB 2.0 clock entry

DA8xx OHCI driver fails to load due to failing clk_get() call for the USB 2.0
clock. Arrange matching USB 2.0 clock by the clock name instead of the device.
(Adding another CLK() entry for "ohci.0" device won't do -- in the future I'll
also have to enable USB 2.0 clock to configure CPPI 4.1 module, in which case
I won't have any device at all.)

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

9 years agoinotify: don't leak user struct on inotify release
Pavel Emelyanov [Wed, 12 May 2010 22:34:07 +0000]
inotify: don't leak user struct on inotify release

inotify_new_group() receives a get_uid-ed user_struct and saves the
reference on group->inotify_data.user.  The problem is that free_uid() is
never called on it.

Issue seem to be introduced by 63c882a0 (inotify: reimplement inotify
using fsnotify) after 2.6.30.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Eric Paris <eparis@parisplace.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Eric Paris <eparis@redhat.com>

9 years agoinotify: race use after free/double free in inotify inode marks
Eric Paris [Tue, 11 May 2010 21:17:40 +0000]
inotify: race use after free/double free in inotify inode marks

There is a race in the inotify add/rm watch code.  A task can find and
remove a mark which doesn't have all of it's references.  This can
result in a use after free/double free situation.

Task A Task B
------------ -----------
inotify_new_watch()
 allocate a mark (refcnt == 1)
 add it to the idr
inotify_rm_watch()
 inotify_remove_from_idr()
  fsnotify_put_mark()
      refcnt hits 0, free
 take reference because we are on idr
 [at this point it is a use after free]
 [time goes on]
 refcnt may hit 0 again, double free

The fix is to take the reference BEFORE the object can be found in the
idr.

Signed-off-by: Eric Paris <eparis@redhat.com>
Cc: <stable@kernel.org>

9 years agoinotify: clean up the inotify_add_watch out path
Eric Paris [Tue, 11 May 2010 21:16:23 +0000]
inotify: clean up the inotify_add_watch out path

inotify_add_watch explictly frees the unused inode mark, but it can just
use the generic code.  Just do that.

Signed-off-by: Eric Paris <eparis@redhat.com>

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Fri, 14 May 2010 14:56:45 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  vhost: fix barrier pairing

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Fri, 14 May 2010 14:55:42 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  mmap_min_addr check CAP_SYS_RAWIO only for write

9 years agoMerge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
Linus Torvalds [Fri, 14 May 2010 14:29:29 +0000]
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze

* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Fix module loading on system with WB cache
  microblaze: export assembly functions used by modules
  microblaze: Remove powerpc code from Microblaze port
  microblaze: Remove compilation warnings in cache macro
  microblaze: export assembly functions used by modules
  microblaze: fix get_user/put_user side-effects
  microblaze: re-enable interrupts before calling schedule

9 years agoMerge branch 'net-2.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
David S. Miller [Fri, 14 May 2010 10:42:49 +0000]
Merge branch 'net-2.6' of git://git./linux/kernel/git/mst/vhost

9 years agommap_min_addr check CAP_SYS_RAWIO only for write
Kees Cook [Thu, 22 Apr 2010 19:19:17 +0000]
mmap_min_addr check CAP_SYS_RAWIO only for write

Redirecting directly to lsm, here's the patch discussed on lkml:
http://lkml.org/lkml/2010/4/22/219

The mmap_min_addr value is useful information for an admin to see without
being root ("is my system vulnerable to kernel NULL pointer attacks?") and
its setting is trivially easy for an attacker to determine by calling
mmap() in PAGE_SIZE increments starting at 0, so trying to keep it private
has no value.

Only require CAP_SYS_RAWIO if changing the value, not reading it.

Comment from Serge :

  Me, I like to write my passwords with light blue pen on dark blue
  paper, pasted on my window - if you're going to get my password, you're
  gonna get a headache.

Signed-off-by: Kees Cook <kees.cook@canonical.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
(cherry picked from commit 822cceec7248013821d655545ea45d1c6a9d15b3)

9 years agomicroblaze: Fix module loading on system with WB cache
Michal Simek [Fri, 14 May 2010 05:40:46 +0000]
microblaze: Fix module loading on system with WB cache

There is necessary to flush whole dcache. Icache work should be
done in kernel/module.c.

Signed-off-by: Michal Simek <monstr@monstr.eu>

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Linus Torvalds [Thu, 13 May 2010 21:48:10 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/sameo/mfd-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: Clean up after WM83xx AUXADC interrupt if it arrives late

9 years agoMerge branch 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Thu, 13 May 2010 21:36:19 +0000]
Merge branch 'kvm-updates/2.6.34' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PPC: Keep index within boundaries in kvmppc_44x_emul_tlbwe()
  KVM: VMX: blocked-by-sti must not defer NMI injections
  KVM: x86: Call vcpu_load and vcpu_put in cpuid_update
  KVM: SVM: Fix wrong intercept masks on 32 bit
  KVM: convert ioapic lock to spinlock

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
Linus Torvalds [Thu, 13 May 2010 19:21:44 +0000]
Merge git://git./linux/kernel/git/gregkh/tty-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
  serial: imx.c: fix CTS trigger level lower to avoid lost chars
  tty: Fix unbalanced BKL handling in error path
  serial: mpc52xx_uart: fix null pointer dereference

9 years agoserial: imx.c: fix CTS trigger level lower to avoid lost chars
Valentin Longchamp [Wed, 5 May 2010 09:47:07 +0000]
serial: imx.c: fix CTS trigger level lower to avoid lost chars

The imx CTS trigger level is left at its reset value that is 32
chars. Since the RX FIFO has 32 entries, when CTS is raised, the
FIFO already is full. However, some serial port devices first empty
their TX FIFO before stopping when CTS is raised, resulting in lost
chars.

This patch sets the trigger level lower so that other chars arrive
after CTS is raised, there is still room for 16 of them.

Signed-off-by: Valentin Longchamp<valentin.longchamp@epfl.ch>
Tested-by: Philippe Rétornaz<philippe.retornaz@epfl.ch>
Acked-by: Wolfram Sang<w.sang@pengutronix.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agotty: Fix unbalanced BKL handling in error path
Alan Cox [Tue, 4 May 2010 19:42:36 +0000]
tty: Fix unbalanced BKL handling in error path

Arnd noted:

After the "retry_open:" label, we first get the tty_mutex
and then the BKL. However a the end of tty_open, we jump
back to retry_open with the BKL still held. If we run into
this case, the tty_open function will be left with the BKL
still held.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoserial: mpc52xx_uart: fix null pointer dereference
Anatolij Gustschin [Tue, 4 May 2010 22:18:59 +0000]
serial: mpc52xx_uart: fix null pointer dereference

Commit 6acc6833510db8f72b5ef343296d97480555fda9
introduced NULL pointer dereference and kernel crash
on ppc32 machines while booting. Fix this bug now.

Reported-by: Leonardo Chiquitto <leonardo.lists@gmail.com>
Tested-by: Leonardo Chiquitto <leonardo.lists@gmail.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfrench...
Linus Torvalds [Thu, 13 May 2010 17:36:16 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/sfrench/cifs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: guard against hardlinking directories

9 years agovfs: Fix O_NOFOLLOW behavior for paths with trailing slashes
Jan Kara [Thu, 13 May 2010 10:52:57 +0000]
vfs: Fix O_NOFOLLOW behavior for paths with trailing slashes

According to specification

mkdir d; ln -s d a; open("a/", O_NOFOLLOW | O_RDONLY)

should return success but currently it returns ELOOP.  This is a
regression caused by path lookup cleanup patch series.

Fix the code to ignore O_NOFOLLOW in case the provided path has trailing
slashes.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Marius Tolzmann <tolzmann@molgen.mpg.de>
Acked-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Thu, 13 May 2010 14:35:26 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: ice1724 - Fix ESI Maya44 capture source control
  ALSA: pcm - Use pgprot_noncached() for MIPS non-coherent archs
  ALSA: virtuoso: fix Xonar D1/DX front panel microphone
  ALSA: hda - Add hp-dv4 model for IDT 92HD71bx
  ALSA: hda - Fix mute-LED GPIO pin for HP dv series
  ALSA: hda: Fix 0 dB for Lenovo models using Conexant CX20549 (Venice)

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Thu, 13 May 2010 14:28:43 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: ad7877 - keep dma rx buffers in seperate cache lines
  Input: psmouse - reset all types of mice before reconnecting
  Input: elantech - use all 3 bytes when checking version
  Input: iforce - fix Guillemot Jet Leader 3D entry
  Input: iforce - add Guillemot Jet Leader Force Feedback

9 years agomfd: Clean up after WM83xx AUXADC interrupt if it arrives late
Mark Brown [Fri, 2 Apr 2010 12:08:39 +0000]
mfd: Clean up after WM83xx AUXADC interrupt if it arrives late

In certain circumstances, especially under heavy load, the AUXADC
completion interrupt may be detected after we've timed out waiting for
it.  That conversion would still succeed but the next conversion will
see the completion that was signalled by the interrupt for the previous
conversion and therefore not wait for the AUXADC conversion to run,
causing it to report failure.

Provide a simple, non-invasive cleanup by using try_wait_for_completion()
to ensure that the completion is not signalled before we wait.  Since
the AUXADC is run within a mutex we know there can only have been at
most one AUXADC interrupt outstanding.  A more involved change should
follow for the next merge window.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

9 years agomicroblaze: export assembly functions used by modules
Michal Simek [Thu, 13 May 2010 10:11:42 +0000]
microblaze: export assembly functions used by modules

Export __strncpy_user, memory_size, ioremap_bot for modules.

Signed-off-by: Michal Simek <monstr@monstr.eu>

9 years agomicroblaze: Remove powerpc code from Microblaze port
Michal Simek [Thu, 13 May 2010 10:09:54 +0000]
microblaze: Remove powerpc code from Microblaze port

Remove eeh_add_device_tree_late which is powerpc specific code.

Signed-off-by: Michal Simek <monstr@monstr.eu>

9 years agomicroblaze: Remove compilation warnings in cache macro
Michal Simek [Thu, 13 May 2010 08:55:47 +0000]
microblaze: Remove compilation warnings in cache macro

CC arch/microblaze/kernel/cpu/cache.o
arch/microblaze/kernel/cpu/cache.c: In function '__invalidate_dcache_range_wb':
arch/microblaze/kernel/cpu/cache.c:398: warning: ISO C90 forbids mixed declarations and code
arch/microblaze/kernel/cpu/cache.c: In function '__flush_dcache_range_wb':
arch/microblaze/kernel/cpu/cache.c:509: warning: ISO C90 forbids mixed declara

Signed-off-by: Michal Simek <monstr@monstr.eu>

9 years agomicroblaze: export assembly functions used by modules
Steven J. Magnani [Tue, 27 Apr 2010 18:00:35 +0000]
microblaze: export assembly functions used by modules

Modules that use copy_{to,from}_user(), memcpy(), and memset() fail to build
in certain circumstances.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>

9 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Thu, 13 May 2010 08:07:15 +0000]
Merge branch 'fix/hda' into for-linus

9 years agoInput: ad7877 - keep dma rx buffers in seperate cache lines
Oskar Schirmer [Thu, 13 May 2010 07:42:23 +0000]
Input: ad7877 - keep dma rx buffers in seperate cache lines

With dma based spi transmission, data corruption is observed
occasionally. With dma buffers located right next to msg and
xfer fields, cache lines correctly flushed in preparation for
dma usage may be polluted again when writing to fields in the
same cache line.

Make sure cache fields used with dma do not share cache lines
with fields changed during dma handling. As both fields are part
of a struct that is allocated via kzalloc, thus cache aligned,
moving the fields to the 1st position and insert padding for
alignment does the job.

Signed-off-by: Oskar Schirmer <os@emlix.com>
Signed-off-by: Daniel Glöckner <dg@emlix.com>
Signed-off-by: Oliver Schneidewind <osw@emlix.com>
Signed-off-by: Johannes Weiner <jw@emlix.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
[dtor@mail.ru - changed to use ___cacheline_aligned as suggested
 by akpm]
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

9 years agoInput: psmouse - reset all types of mice before reconnecting
Dmitry Torokhov [Thu, 13 May 2010 07:42:23 +0000]
Input: psmouse - reset all types of mice before reconnecting

Synaptics hardware requires resetting device after suspend to ram
in order for the device to be operational. The reset lives in
synaptics-specific reconnect handler, but it is not being invoked
if synaptics support is disabled and the device is handled as a
standard PS/2 device (bare or IntelliMouse protocol).

Let's add reset into generic reconnect handler as well.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

9 years agoInput: elantech - use all 3 bytes when checking version
Dmitry Torokhov [Thu, 13 May 2010 07:41:15 +0000]
Input: elantech - use all 3 bytes when checking version

Apparently all 3 bytes returned by ETP_FW_VERSION_QUERY are significant
and should be taken into account when matching hardware version/features.

Tested-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

9 years agomicroblaze: fix get_user/put_user side-effects
Steven J. Magnani [Thu, 6 May 2010 21:38:33 +0000]
microblaze: fix get_user/put_user side-effects

The Microblaze implementations of get_user() and (MMU) put_user() evaluate
the address argument more than once. This causes unexpected side-effects for
invocations that include increment operators, i.e. get_user(foo, bar++).

This patch also removes the distinction between MMU and noMMU put_user().

Without the patch:
  $ echo 1234567890 > /proc/sys/kernel/core_pattern
  $ cat /proc/sys/kernel/core_pattern
  12345

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>

9 years agomicroblaze: re-enable interrupts before calling schedule
Steven J. Magnani [Tue, 27 Apr 2010 18:00:23 +0000]
microblaze: re-enable interrupts before calling schedule

schedule() should not be called with interrupts disabled.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>

9 years agoKVM: PPC: Keep index within boundaries in kvmppc_44x_emul_tlbwe()
Roel Kluin [Sun, 9 May 2010 15:26:47 +0000]
KVM: PPC: Keep index within boundaries in kvmppc_44x_emul_tlbwe()

An index of KVM44x_GUEST_TLB_SIZE is already one too large.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: VMX: blocked-by-sti must not defer NMI injections
Jan Kiszka [Tue, 11 May 2010 13:16:46 +0000]
KVM: VMX: blocked-by-sti must not defer NMI injections

As the processor may not consider GUEST_INTR_STATE_STI as a reason for
blocking NMI, it could return immediately with EXIT_REASON_NMI_WINDOW
when we asked for it. But as we consider this state as NMI-blocking, we
can run into an endless loop.

Resolve this by allowing NMI injection if just GUEST_INTR_STATE_STI is
active (originally suggested by Gleb). Intel confirmed that this is
safe, the processor will never complain about NMI injection in this
state.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
KVM-Stable-Tag
Acked-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: x86: Call vcpu_load and vcpu_put in cpuid_update
Dongxiao Xu [Tue, 11 May 2010 10:21:33 +0000]
KVM: x86: Call vcpu_load and vcpu_put in cpuid_update

cpuid_update may operate VMCS, so vcpu_load() and vcpu_put()
should be called to ensure correctness.

Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoKVM: SVM: Fix wrong intercept masks on 32 bit
Joerg Roedel [Wed, 5 May 2010 14:04:43 +0000]
KVM: SVM: Fix wrong intercept masks on 32 bit

This patch makes KVM on 32 bit SVM working again by
correcting the masks used for iret interception. With the
wrong masks the upper 32 bits of the intercepts are masked
out which leaves vmrun unintercepted. This is not legal on
svm and the vmrun fails.
Bug was introduced by commits 95ba827313 and 3cfc3092.

Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

9 years agoKVM: convert ioapic lock to spinlock
Marcelo Tosatti [Fri, 23 Apr 2010 17:03:38 +0000]
KVM: convert ioapic lock to spinlock

kvm_set_irq is used from non sleepable contexes, so convert ioapic from
mutex to spinlock.

KVM-Stable-Tag.
Tested-by: Ralf Bonenkamp <ralf.bonenkamp@swyx.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Thu, 13 May 2010 01:48:26 +0000]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/perf_event: Fix oops due to perf_event_do_pending call
  powerpc/swiotlb: Fix off by one in determining boundary of which ops to use

9 years agoMerge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Thu, 13 May 2010 01:47:55 +0000]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] correct address of _stext with CONFIG_SHARED_KERNEL=y
  [S390] ptrace: fix return value of do_syscall_trace_enter()
  [S390] dasd: fix race between tasklet and dasd_sleep_on

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Thu, 13 May 2010 01:47:29 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: preserve seq # on requeued messages after transient transport errors
  ceph: fix cap removal races
  ceph: zero unused message header, footer fields
  ceph: fix locking for waking session requests after reconnect
  ceph: resubmit requests on pg mapping change (not just primary change)
  ceph: fix open file counting on snapped inodes when mds returns no caps
  ceph: unregister osd request on failure
  ceph: don't use writeback_control in writepages completion
  ceph: unregister bdi before kill_anon_super releases device name

9 years agoMerge commit 'kumar/merge' into merge
Benjamin Herrenschmidt [Thu, 13 May 2010 01:42:40 +0000]
Merge commit 'kumar/merge' into merge

9 years agoRevert "PCI: update bridge resources to get more big ranges in PCI assign unssigned"
Linus Torvalds [Thu, 13 May 2010 01:39:45 +0000]
Revert "PCI: update bridge resources to get more big ranges in PCI assign unssigned"

This reverts commit 977d17bb1749517b353874ccdc9b85abc7a58c2a, because it
can cause problems with some devices not getting any resources at all
when the resource tree is re-allocated.

For an example of this, see

https://bugzilla.kernel.org/show_bug.cgi?id=15960
(originally https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4982)
(lkml thread: http://lkml.org/lkml/2010/4/19/20)

where Peter Henriksson reported his Xonar DX sound card gone, because
the IO port region was no longer allocated.

Reported-bisected-and-tested-by: Peter Henriksson <peter.henriksson@gmail.com>
Requested-by: Andrew Morton <akpm@linux-foundation.org>
Requested-by: Clemens Ladisch <clemens@ladisch.de>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoCacheFiles: Fix error handling in cachefiles_determine_cache_security()
David Howells [Wed, 12 May 2010 14:34:03 +0000]
CacheFiles: Fix error handling in cachefiles_determine_cache_security()

cachefiles_determine_cache_security() is expected to return with a
security override in place.  However, if set_create_files_as() fails, we
fail to do this.  In this case, we should just reinstate the security
override that was set by the caller.

Furthermore, if set_create_files_as() fails, we should dispose of the
new credentials we were in the process of creating.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agorwsem: Test for no active locks in __rwsem_do_wake undo code
Michel Lespinasse [Wed, 12 May 2010 10:38:45 +0000]
rwsem: Test for no active locks in __rwsem_do_wake undo code

If there are no active threasd using a semaphore, it is always correct
to unqueue blocked threads.  This seems to be what was intended in the
undo code.

What was done instead, was to look for a sem count of zero - this is an
impossible situation, given that at least one thread is known to be
queued on the semaphore.  The code might be correct as written, but it's
hard to reason about and it's not what was intended (otherwise the goto
out would have been unconditional).

Go for checking the active count - the alternative is not worth the
headache.

Signed-off-by: Michel Lespinasse <walken@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agovhost: fix barrier pairing
Michael S. Tsirkin [Tue, 11 May 2010 16:44:17 +0000]
vhost: fix barrier pairing

According to memory-barriers.txt, an smp memory barrier in guest
should always be paired with an smp memory barrier in host,
and I quote "a lack of appropriate pairing is almost certainly an
error". In case of vhost, failure to flush out used index
update before looking at the interrupt disable flag
could result in missed interrupts, resulting in
networking hang under stress.

This might happen when flags read bypasses used index write.
So we see interrupts disabled and do not interrupt, at the
same time guest writes flags value to enable interrupt,
reads an old used index value, thinks that
used ring is empty and waits for interrupt.

Note: the barrier we pair with here is in
drivers/virtio/virtio_ring.c, function
vring_enable_cb.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Juan Quintela <quintela@redhat.com>

9 years agoInotify: undefined reference to `anon_inode_getfd'
Russell King [Sun, 18 Apr 2010 20:25:11 +0000]
Inotify: undefined reference to `anon_inode_getfd'

Fix:

fs/built-in.o: In function `sys_inotify_init1':
summary.c:(.text+0x347a4): undefined reference to `anon_inode_getfd'

found by kautobuild with arms bcmring_defconfig, which ends up with
INOTIFY_USER enabled (through the 'default y') but leaves ANON_INODES
unset.  However, inotify_user.c uses anon_inode_getfd().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Eric Paris <eparis@redhat.com>

9 years agoALSA: ice1724 - Fix ESI Maya44 capture source control
Takashi Iwai [Wed, 12 May 2010 14:43:32 +0000]
ALSA: ice1724 - Fix ESI Maya44 capture source control

The capture source control of maya44 was wrongly coded with the bit
shift instead of the bit mask.  Also, the slot for line-in was
wrongly assigned (slot 5 instead of 4).

Reported-by: Alex Chernyshoff <alexdsp@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agoALSA: pcm - Use pgprot_noncached() for MIPS non-coherent archs
Takashi Iwai [Wed, 12 May 2010 08:32:42 +0000]
ALSA: pcm - Use pgprot_noncached() for MIPS non-coherent archs

MIPS non-coherent archs need the noncached pgprot in mmap of PCM buffers.
But, since the coherency needs to be checked dynamically via
plat_device_is_coherent(), we need an ugly check dependent on MIPS
in ALSA core code.

This should be cleaned up in MIPS arch side (e.g. creating
dma_mmap_coherent()) in near future.

Tested-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agoALSA: virtuoso: fix Xonar D1/DX front panel microphone
Clemens Ladisch [Tue, 11 May 2010 14:34:39 +0000]
ALSA: virtuoso: fix Xonar D1/DX front panel microphone

Commit 65c3ac885ce9852852b895a4a62212f62cb5f2e9 in 2.6.33 accidentally
left out the initialization of the AC97 codec FMIC2MIC bit, which broke
recording from the front panel microphone.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agoALSA: hda - Add hp-dv4 model for IDT 92HD71bx
Takashi Iwai [Wed, 12 May 2010 08:16:20 +0000]
ALSA: hda - Add hp-dv4 model for IDT 92HD71bx

It turned out that HP dv series have inconsistent the mute-LED GPIO
mapping among various models.  dv4/7 seem to use GPIO 0 while dv 5/6
seem to use GPIO 3.  The previous commit
  26ebe0a28986f4845b2c5bea43ac5cc0b9f27f0a
  ALSA: hda - Fix mute-LED GPIO pin for HP dv series
breaks dv5/6.

This patch adds the new quirk model, hp-dv4, to handle HP dv4/7
separately from HP dv5/6.

Tested-by: Kunal Gangakhedkar <kunal.gangakhedkar@gmail.com> (for dv6-1110ax)
Acked-by: Kunal Gangakhedkar <kunal.gangakhedkar@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years ago[S390] correct address of _stext with CONFIG_SHARED_KERNEL=y
Martin Schwidefsky [Wed, 12 May 2010 07:32:13 +0000]
[S390] correct address of _stext with CONFIG_SHARED_KERNEL=y

As of git commit 1844c9bc0b2fed3023551c1affe033ab38e90b9a head64.S/head31.S
are not included in head.S anymore but build as an extra object. This breaks
shared kernel support because the .org statement in head64.S/head31.S for
CONFIG_SHARED_KERNEL=y will have a different effect. The end address of the
head.text section in head.o will be added to the .org value, to compensate
for this subtract 0x11000 to get the required value of 0x100000 again.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 years ago[S390] ptrace: fix return value of do_syscall_trace_enter()
Gerald Schaefer [Wed, 12 May 2010 07:32:12 +0000]
[S390] ptrace: fix return value of do_syscall_trace_enter()

strace may change the system call number, so regs->gprs[2] must not
be read before tracehook_report_syscall_entry(). This fixes a bug
where "strace -f" will hang after a vfork().

Cc: <stable@kernel.org>
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 years ago[S390] dasd: fix race between tasklet and dasd_sleep_on
Stefan Weinhuber [Wed, 12 May 2010 07:32:11 +0000]
[S390] dasd: fix race between tasklet and dasd_sleep_on

The various dasd_sleep_on functions use a global wait queue when
waiting for a cqr. The wait condition checks the status and devlist
fields of the cqr to determine if it is safe to continue. This
evaluation may return true, although the tasklet has not finished
processing of the cqr and the callback function has not been called
yet. When the callback is finally called, the data in the cqr may
already be invalid. The sleep_on wait condition needs a safe way to
determine if the tasklet has finished processing. Use the
callback_data field of the cqr to store a token, which is set by
the callback function itself.

Cc: <stable@kernel.org>
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

9 years agopowerpc/perf_event: Fix oops due to perf_event_do_pending call
Paul Mackerras [Tue, 13 Apr 2010 20:46:04 +0000]
powerpc/perf_event: Fix oops due to perf_event_do_pending call

Anton Blanchard found that large POWER systems would occasionally
crash in the exception exit path when profiling with perf_events.
The symptom was that an interrupt would occur late in the exit path
when the MSR[RI] (recoverable interrupt) bit was clear.  Interrupts
should be hard-disabled at this point but they were enabled.  Because
the interrupt was not recoverable the system panicked.

The reason is that the exception exit path was calling
perf_event_do_pending after hard-disabling interrupts, and
perf_event_do_pending will re-enable interrupts.

The simplest and cleanest fix for this is to use the same mechanism
that 32-bit powerpc does, namely to cause a self-IPI by setting the
decrementer to 1.  This means we can remove the tests in the exception
exit path and raw_local_irq_restore.

This also makes sure that the call to perf_event_do_pending from
timer_interrupt() happens within irq_enter/irq_exit.  (Note that
calling perf_event_do_pending from timer_interrupt does not mean that
there is a possible 1/HZ latency; setting the decrementer to 1 ensures
that the timer interrupt will happen immediately, i.e. within one
timebase tick, which is a few nanoseconds or 10s of nanoseconds.)

Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: stable@kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agoceph: preserve seq # on requeued messages after transient transport errors
Sage Weil [Wed, 12 May 2010 04:20:38 +0000]
ceph: preserve seq # on requeued messages after transient transport errors

If the tcp connection drops and we reconnect to reestablish a stateful
session (with the mds), we need to resend previously sent (and possibly
received) messages with the _same_ seq # so that they can be dropped on
the other end if needed.  Only assign a new seq once after the message is
queued.

Signed-off-by: Sage Weil <sage@newdream.net>

9 years agoceph: fix cap removal races
Sage Weil [Wed, 12 May 2010 03:56:31 +0000]
ceph: fix cap removal races

The iterate_session_caps helper traverses the session caps list and tries
to grab an inode reference.  However, the __ceph_remove_cap was clearing
the inode backpointer _before_ removing itself from the session list,
causing a null pointer dereference.

Clear cap->ci under protection of s_cap_lock to avoid the race, and to
tightly couple the list and backpointer state.  Use a local flag to
indicate whether we are releasing the cap, as cap->session may be modified
by a racing thread in iterate_session_caps.

Signed-off-by: Sage Weil <sage@newdream.net>

9 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelv...
Linus Torvalds [Wed, 12 May 2010 00:38:04 +0000]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/jdelvare/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (applesmc) Correct sysfs fan error handling
  hwmon: (asc7621) Bug fixes

9 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 12 May 2010 00:37:24 +0000]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  kprobes/x86: Fix removed int3 checking order
  perf: Fix static strings treated like dynamic ones

9 years agodrivers/gpu/drm/i915/i915_irq.c:i915_error_object_create(): use correct kmap-atomic...
Andrew Morton [Tue, 11 May 2010 21:07:05 +0000]
drivers/gpu/drm/i915/i915_irq.c:i915_error_object_create(): use correct kmap-atomic slot

i915_error_object_create() is called from the timer interrupt and hence
can corrupt the KM_USER0 slot.  Use KM_IRQ0 instead.

Reported-by: Jaswinder Singh Rajput <jaswinderlinux@gmail.com>
Tested-by: Jaswinder Singh Rajput <jaswinderlinux@gmail.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agohp_accel: fix race in device removal
Oliver Neukum [Tue, 11 May 2010 21:07:03 +0000]
hp_accel: fix race in device removal

The work queue has to be flushed after the device has been made
inaccessible.  The patch closes a window during which a work queue might
remain active after the device is removed and would then lead to ACPI
calls with undefined behavior.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Acked-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Pavel Herrmann <morpheus.ibis@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agomqueue: fix kernel BUG caused by double free() on mq_open()
André Goddard Rosa [Tue, 11 May 2010 21:07:03 +0000]
mqueue: fix kernel BUG caused by double free() on mq_open()

In case of aborting because we reach the maximum amount of memory which
can be allocated to message queues per user (RLIMIT_MSGQUEUE), we would
try to free the message area twice when bailing out: first by the error
handling code itself, and then later when cleaning up the inode through
delete_inode().

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agofbdev: bfin-t350mcqb-fb: fix fbmem allocation with blanking lines
Michael Hennerich [Tue, 11 May 2010 21:07:00 +0000]
fbdev: bfin-t350mcqb-fb: fix fbmem allocation with blanking lines

The current allocation does not include the memory required for blanking
lines.  So avoid memory corruption when multiple devices are using the DMA
memory near each other.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agomemcg: fix css_is_ancestor() RCU locking
KAMEZAWA Hiroyuki [Tue, 11 May 2010 21:06:59 +0000]
memcg: fix css_is_ancestor() RCU locking

Some callers (in memcontrol.c) calls css_is_ancestor() without
rcu_read_lock.  Because css_is_ancestor() has to access RCU protected
data, it should be under rcu_read_lock().

This makes css_is_ancestor() itself does safe access to RCU protected
area.  (At least, "root" can have refcnt==0 if it's not an ancestor of
"child".  So, we need rcu_read_lock().)

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agomemcg: fix css_id() RCU locking for real
KAMEZAWA Hiroyuki [Tue, 11 May 2010 21:06:58 +0000]
memcg: fix css_id() RCU locking for real

Commit ad4ba375373937817404fd92239ef4cadbded23b ("memcg: css_id() must be
called under rcu_read_lock()") modifies memcontol.c for fixing RCU check
message.  But Andrew Morton pointed out that the fix doesn't seems sane
and it was just for hidining lockdep messages.

This is a patch for do proper things.  Checking again, all places,
accessing without rcu_read_lock, that commit fixies was intentional....
all callers of css_id() has reference count on it.  So, it's not necessary
to be under rcu_read_lock().

Considering again, we can use rcu_dereference_check for css_id().  We know
css->id is valid if css->refcnt > 0.  (css->id never changes and freed
after css->refcnt going to be 0.)

This patch makes use of rcu_dereference_check() in css_id/depth and remove
unnecessary rcu-read-lock added by the commit.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agobsdacct: use del_timer_sync() in acct_exit_ns()
Vitaliy Gusev [Tue, 11 May 2010 21:06:56 +0000]
bsdacct: use del_timer_sync() in acct_exit_ns()

acct_exit_ns --> acct_file_reopen deletes timer without check timer
execution on other CPUs.  So acct_timeout() can change an unmapped memory.

Signed-off-by: Vitaliy Gusev <vgusev@openvz.org>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agormap: remove anon_vma check in page_address_in_vma()
Naoya Horiguchi [Tue, 11 May 2010 21:06:55 +0000]
rmap: remove anon_vma check in page_address_in_vma()

Currently page_address_in_vma() compares vma->anon_vma and
page_anon_vma(page) for parameter check, but in 2.6.34 a vma can have
multiple anon_vmas with anon_vma_chain, so current check does not work.
(For anonymous page shared by multiple processes, some verified (page,vma)
pairs return -EFAULT wrongly.)

We can go to checking all anon_vmas in the "same_vma" chain, but it needs
to meet lock requirement.  Instead, we can remove anon_vma check safely
because page_address_in_vma() assumes that page and vma are already
checked to belong to the identical process.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agohugetlbfs: kill applications that use MAP_NORESERVE with SIGBUS instead of OOM-killer
Mel Gorman [Tue, 11 May 2010 21:06:53 +0000]
hugetlbfs: kill applications that use MAP_NORESERVE with SIGBUS instead of OOM-killer

Ordinarily, application using hugetlbfs will create mappings with
reserves.  For shared mappings, these pages are reserved before mmap()
returns success and for private mappings, the caller process is guaranteed
and a child process that cannot get the pages gets killed with sigbus.

An application that uses MAP_NORESERVE gets no reservations and mmap()
will always succeed at the risk the page will not be available at fault
time.  This might be used for example on very large sparse mappings where
the developer is confident the necessary huge pages exist to satisfy all
faults even though the whole mapping cannot be backed by huge pages.
Unfortunately, if an allocation does fail, VM_FAULT_OOM is returned to the
fault handler which proceeds to trigger the OOM-killer.  This is
unhelpful.

Even without hugetlbfs mounted, a user using mmap() can trivially trigger
the OOM-killer because VM_FAULT_OOM is returned (will provide example
program if desired - it's a whopping 24 lines long).  It could be
considered a DOS available to an unprivileged user.

This patch alters hugetlbfs to kill a process that uses MAP_NORESERVE
where huge pages were not available with SIGBUS instead of triggering the
OOM killer.

This change affects hugetlb_cow() as well.  I feel there is a failure case
in there, but I didn't create one.  It would need a fairly specific target
in terms of the faulting application and the hugepage pool size.  The
hugetlb_no_page() path is much easier to hit but both might as well be
closed.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agokexec: fix OOPS in crash_kernel_shrink
Vitaly Mayatskikh [Tue, 11 May 2010 21:06:51 +0000]
kexec: fix OOPS in crash_kernel_shrink

Two "echo 0 > /sys/kernel/kexec_crash_size" OOPSes kernel.  Also content
of this file is invalid after first shrink to zero: it shows 1 instead of
0.

This scenario is unlikely to happen often (root privs, valid crashkernel=
in cmdline, dump-capture kernel not loaded), I hit it only by chance.

This patch fixes it.

Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com>
Cc: Cong Wang <amwang@redhat.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agommc: atmel-mci: fix in debugfs: response value printing
Nicolas Ferre [Tue, 11 May 2010 21:06:50 +0000]
mmc: atmel-mci: fix in debugfs: response value printing

In debugfs, printing of command response reports resp[2] twice: fix it to
resp[3].

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agommc: atmel-mci: remove data error interrupt after xfer
Nicolas Ferre [Tue, 11 May 2010 21:06:50 +0000]
mmc: atmel-mci: remove data error interrupt after xfer

Disable data error interrupts while we are actually recording that there
is not such errors.  This will prevent, in some cases, the warning message
printed at new request queuing (in atmci_start_request()).

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: <linux-mmc@vger.kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agommc: atmel-mci: prevent kernel oops while removing card
Nicolas Ferre [Tue, 11 May 2010 21:06:49 +0000]
mmc: atmel-mci: prevent kernel oops while removing card

The removing of an SD card in certain circumstances can lead to a kernel
oops if we do not make sure that the "data" field of the host structure is
valid.  This patch adds a test in atmci_dma_cleanup() function and also
calls atmci_stop_dma() before throwing away the reference to data.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: <linux-mmc@vger.kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agommc: atmel-mci: fix two parameters swapped
Nicolas Ferre [Tue, 11 May 2010 21:06:48 +0000]
mmc: atmel-mci: fix two parameters swapped

Two parameters were swapped in the calls to atmci_init_slot().

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reported-by: Anders Grahn <anders.grahn@hd-wireless.se>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: <linux-mmc@vger.kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agorevert "procfs: provide stack information for threads" and its fixup commits
Robin Holt [Tue, 11 May 2010 21:06:46 +0000]
revert "procfs: provide stack information for threads" and its fixup commits

Originally, commit d899bf7b ("procfs: provide stack information for
threads") attempted to introduce a new feature for showing where the
threadstack was located and how many pages are being utilized by the
stack.

Commit c44972f1 ("procfs: disable per-task stack usage on NOMMU") was
applied to fix the NO_MMU case.

Commit 89240ba0 ("x86, fs: Fix x86 procfs stack information for threads on
64-bit") was applied to fix a bug in ia32 executables being loaded.

Commit 9ebd4eba7 ("procfs: fix /proc/<pid>/stat stack pointer for kernel
threads") was applied to fix a bug which had kernel threads printing a
userland stack address.

Commit 1306d603f ('proc: partially revert "procfs: provide stack
information for threads"') was then applied to revert the stack pages
being used to solve a significant performance regression.

This patch nearly undoes the effect of all these patches.

The reason for reverting these is it provides an unusable value in
field 28.  For x86_64, a fork will result in the task->stack_start
value being updated to the current user top of stack and not the stack
start address.  This unpredictability of the stack_start value makes
it worthless.  That includes the intended use of showing how much stack
space a thread has.

Other architectures will get different values.  As an example, ia64
gets 0.  The do_fork() and copy_process() functions appear to treat the
stack_start and stack_size parameters as architecture specific.

I only partially reverted c44972f1 ("procfs: disable per-task stack usage
on NOMMU") .  If I had completely reverted it, I would have had to change
mm/Makefile only build pagewalk.o when CONFIG_PROC_PAGE_MONITOR is
configured.  Since I could not test the builds without significant effort,
I decided to not change mm/Makefile.

I only partially reverted 89240ba0 ("x86, fs: Fix x86 procfs stack
information for threads on 64-bit") .  I left the KSTK_ESP() change in
place as that seemed worthwhile.

Signed-off-by: Robin Holt <holt@sgi.com>
Cc: Stefani Seibold <stefani@seibold.net>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoit8761e_gpio: fix bug in gpio numbering
Denis Turischev [Tue, 11 May 2010 21:06:44 +0000]
it8761e_gpio: fix bug in gpio numbering

The SIO chip contains 16 possible gpio lines, not 14.  The schematic was
not read carefully.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agodma-mapping: fix dma_sync_single_range_*
FUJITA Tomonori [Tue, 11 May 2010 21:06:43 +0000]
dma-mapping: fix dma_sync_single_range_*

dma_sync_single_range_for_cpu() and dma_sync_single_range_for_device() use
a wrong address with a partial synchronization.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoceph: zero unused message header, footer fields
Sage Weil [Tue, 11 May 2010 22:01:51 +0000]
ceph: zero unused message header, footer fields

We shouldn't leak any prior memory contents to other parties.  And random
data, particularly in the 'version' field, can cause problems down the
line.

Signed-off-by: Sage Weil <sage@newdream.net>