Commit graph

361,021 commits

Author SHA1 Message Date
Zheng Liu
aaddea812c ext4: add tracepoint in punching hole
This patch adds a tracepoint in ext4_punch_hole.

CC: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2013-01-16 20:21:26 -05:00
Linus Torvalds
dfdebc2483 xfs: bugfixes for 3.8-rc4
- fix(es) for compound buffers
 - fix for dquot soft timer asserts due to overflow of d_blk_softlimit
 - fix for regression in dir v2 code introduced in commit 20f7e9f3
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.10 (GNU/Linux)
 
 iQIcBAABAgAGBQJQ9zKnAAoJENaLyazVq6ZORGcP/RemqCHJEw0a89Y0tLLLAcz/
 Es97kJMESdvi3gX3JTdz3vC8LP21dSCR3k3MvVgucb8RsvGoiLixrmluIRxKb79M
 DEmz9YJ/qxFIpnM9y46VxCYV+/ezxUDEv68wA6T2wJbof26nTLlTj2gAgqjvyWiF
 R1c1OmdCsTfA257UvxfxSVixVnWv7E2io2ZXUGsrBkP4J9OMaMtn00UYOuP1YL8S
 NJ44z9QAzTqVEbAfGeaeV/QVUJzMj/IqWCwF7YKEhfmccO/tPyN0+nMG2DI0Fp5e
 cYGsi4JnaFbqE6Aa/7mu3kv8lYnPe0n3t9d3EwzxOEx+PAvuY8N0EW8Qa4c+805n
 zXFvAroLgP0jYEEuIfEGYIwDPxG0xjor6ztu8e2twcIj6cDHzSpeYaDPnYvWJlwu
 FiupnVu+3FX6mVY1jCealI47nOwzM12R7nXysqF3F6Sf95xGJtG3BoTIKioNqk1g
 dzJGMQvwg/WLvquYb9W/ZNb1T314R23wdYtmI7gWJ74z9IQqWCZBWFYyBhQ8y1Pr
 Vf3LFjzqNqqnYNzoe8Wnn9wKQ57Es7onAo34Y9HZCOkslZsn5nKriNTXNN6Q9Upc
 5RKvj1CbTpKAJYrrhWryI1HtlDKqqtMFdmRQulSu+O9ZJuWZh4XNTu4t3oewt0Ac
 5otZwOdk53V3tGxt3prs
 =gA4q
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-v3.8-rc4' of git://oss.sgi.com/xfs/xfs

Pull xfs bugfixes from Ben Myers:

 - fix(es) for compound buffers

 - fix for dquot soft timer asserts due to overflow of d_blk_softlimit

 - fix for regression in dir v2 code introduced in commit 20f7e9f372
   ("xfs: factor dir2 block read operations")

* tag 'for-linus-v3.8-rc4' of git://oss.sgi.com/xfs/xfs:
  xfs: recalculate leaf entry pointer after compacting a dir2 block
  xfs: remove int casts from debug dquot soft limit timer asserts
  xfs: fix the multi-segment log buffer format
  xfs: fix segment in xfs_buf_item_format_segment
  xfs: rename bli_format to avoid confusion with bli_formats
  xfs: use b_maps[] for discontiguous buffers
2013-01-16 16:19:54 -08:00
Dimitris Papastamos
b86dc0d8c1 ARM: S3C64XX: Fix up IRQ mapping for balblair on Cragganmore
We are using S3C_EINT(4) instead of S3C_EINT(5).

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-01-16 15:49:53 -08:00
Alim Akhtar
753bd6ddf4 ARM: dts: correct the dw-mshc timing properties as per binding
As per the current exynos-dw-mshc bindings, dw-mshc-sdr-timing and
dw-mshc-ddr-timing properties are having only two cells, these properties
are wrongly set for exynos5250 based cros5250 and smdk5250 platfroms. This
patch corrects above timing propreties for above platfroms

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Tested-by: Doug Anderson <dianders@chromium.org>
Acked-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-01-16 15:45:52 -08:00
Tomasz Figa
c0d6cfd300 ARM: S3C64XX: Fix build error with CONFIG_S3C_DEV_FB disabled
If there is no board selecting CONFIG_S3C_DEV_FB enabled, build will
fail on arch/arm/mach-s3c64xx/pm.c, where s3c_device_fb is referenced.

This patch adds ifdef guard around the code making it compile only
when CONFIG_S3C_DEV_FB is enabled.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-01-16 15:45:52 -08:00
Eric Sandeen
aeb4f20a02 xfs: Do not return EFSCORRUPTED when filesystem probe finds no XFS magic
9802182 changed the return value from EWRONGFS (aka EINVAL)
to EFSCORRUPTED which doesn't seem to be handled properly by
the root filesystem probe.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Tested-by: Sergei Trofimovich <slyfox@gentoo.org>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2013-01-16 17:33:53 -06:00
Timo Teräs
9fba0812c1 r8169: remove unneeded dirty_rx index
After commit 6f0333b ("r8169: use 50% less ram for RX ring") the rx
ring buffers are always copied making dirty_rx useless.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 18:02:09 -05:00
Johannes Berg
5a32aff37a mac80211: split out chandef tracing macros
Some new APIs will require tracing a chandef without
it being part of a channel context, so separate out
the tracing macros for that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 23:57:51 +01:00
Dmitry Kasatkin
a175b8bb29 ima: forbid write access to files with digital signatures
This patch forbids write access to files with digital signatures, as they
are considered immutable.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-01-16 17:50:05 -05:00
Dmitry Kasatkin
ea1046d4c5 ima: move full pathname resolution to separate function
Define a new function ima_d_path(), which returns the full pathname.
This function will be used further, for example, by the directory
verification code.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-01-16 17:50:03 -05:00
Dmitry Kasatkin
ee86633174 integrity: reduce storage size for ima_status and evm_status
This patch reduces size of the iint structure by 8 bytes.
It saves about 15% of iint cache memory.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-01-16 17:50:01 -05:00
Mimi Zohar
16cac49f72 ima: rename FILE_MMAP to MMAP_CHECK
Rename FILE_MMAP hook to MMAP_CHECK to be consistent with the other
hook names.

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
2013-01-16 17:49:59 -05:00
Dmitry Kasatkin
b51524635b ima: remove security.ima hexdump
Hexdump is not really helping. Audit messages prints error messages.
Remove it.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-01-16 17:49:57 -05:00
Dmitry Kasatkin
750943a307 ima: remove enforce checking duplication
Based on the IMA appraisal policy, files are appraised.  For those
files appraised, the IMA hooks return the integrity appraisal result,
assuming IMA-appraisal is in enforcing mode.  This patch combines
both of these criteria (in policy and enforcing file integrity),
removing the checking duplication.

Changelog v1:
- Update hook comments

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-01-16 17:49:44 -05:00
Simon Wunderlich
11c4a075db cfg80211: check radar interface combinations
To ease further DFS development regarding interface combinations, use
the interface combinations structure to test for radar capabilities.
Drivers can specify which channel widths they support, and in which
modes. Right now only a single AP interface is allowed, but as the
DFS code evolves other combinations can be enabled.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 23:41:54 +01:00
Linus Torvalds
309b51e879 ACPI and power management fixes for 3.8-rc4
* cpuidle initialization regression fix from Krzysztof Mazur.
 
 * cpuidle fix for power usage fields handling from Daniel Lezcano.
 
 * ACPI build fix from Yinghai Lu.
 
 -
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iQIcBAABAgAGBQJQ9xwEAAoJEKhOf7ml8uNsaUEP/iwVRuWSPqEzzl++mLBe8uf5
 vP1+72Ko5NBPG56uqQMCanuB6M9YsIRr1yv4SSYIF15K4DKbYfpXMvR6yoZox3CA
 Y+vrlA62AYOBsX3wOHo+5JVtBdV82IZOBXYhy9hNcxIVzh0NiAWtyz2QxlNIz7I1
 9R33HEfIKwi4L2SSiXBqLEMuz0JKie131FunBwvHEtZ4QTq2OFxmCWxfaFz0syvH
 9NZfOnh2ijiGb0ou3FTAXLqbEJHJUIhYzZnejobrxFCJmhA+hfsmxRnokrRdLZJ+
 14lOpdBQJas06QePs+hadWwLrebjvio+CTb8w0Fhclt5O2fqgMG2jdwO+f4pEWA9
 E7DBo0LJCKoDPofsnAXYjoOI3r9EL6o0fhhMzIrZdZazEFOj8WP+EoK7/nG2KRq2
 eIO4Lv0sfKmlnJriUUzhEjdkLql0ctLBGZk8T+x/o8WQMPYUw6AnNf1+voEvLTPQ
 C2/yyzs+1bPzFj0/0qsvUx5ee6xNgT3p/+YaQW89RlTibW91LN1m5ezNtAF5atEk
 K9va5y1w54molOL/j2U56bP+RrktSTKmrnFHluHWWb9tUVBapOTRrCg03xSgvJOq
 PEv5LHUIfjHHl2r7I67/Lf2LJjgvpqO0BfEGgmfCgJE/BUFTmT7S1FYxllaNJVk+
 EvdSOXokr52pFltHG5Bl
 =4ifX
 -----END PGP SIGNATURE-----

Merge tag 'pm+acpi-for-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:

 - cpuidle regression fix related to the initialization of state
   kobjects from Krzysztof Mazur.

 - cpuidle fix removing some not very useful code and making some
   user-visible problems go away at the same time.  From Daniel Lezcano.

 - ACPI build fix from Yinghai Lu.

* tag 'pm+acpi-for-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpuidle: remove the power_specified field in the driver
  ACPI / glue: Fix build with ACPI_GLUE_DEBUG set
  cpuidle: fix number of initialized/destroyed states
2013-01-16 14:34:52 -08:00
Uwe Kleine-König
a73b59c51a ARM: compile fix for DEBUG_LL=y && MMU=n
debug_ll_addr is only used on machines with an MMU so it can be #ifdef'ed
out safely. This fixes:

arch/arm/kernel/debug.S: Assembler messages:
arch/arm/kernel/debug.S:104: Error: too many positional arguments

The problem was introduced in e5c5f2a ARM: implement debug_ll_io_init().

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-01-16 14:30:06 -08:00
Jouni Malinen
cee00a959c cfg80211: Allow use_mfp to be specified with the connect command
The NL80211_ATTR_USE_MFP attribute was originally added for
NL80211_CMD_ASSOCIATE, but it is actually as useful (if not even more
useful) with NL80211_CMD_CONNECT, so process that attribute with the
connect command, too.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 23:27:49 +01:00
Bob Copeland
8680451f38 mac80211: add encrypt headroom to PERR frames
Mesh PERR action frames are robust and thus may be encrypted, so add
proper head/tailroom to allow this.  Fixes this warning when operating
a Mesh STA on ath5k:

WARNING: at net/mac80211/wpa.c:427 ccmp_encrypt_skb.isra.5+0x7b/0x1a0 [mac80211]()
Call Trace:
 [<c011c5e7>] warn_slowpath_common+0x63/0x78
 [<c011c60b>] warn_slowpath_null+0xf/0x13
 [<e090621d>] ccmp_encrypt_skb.isra.5+0x7b/0x1a0 [mac80211]
 [<e090685c>] ieee80211_crypto_ccmp_encrypt+0x1f/0x37 [mac80211]
 [<e0917113>] invoke_tx_handlers+0xcad/0x10bd [mac80211]
 [<e0917665>] ieee80211_tx+0x87/0xb3 [mac80211]
 [<e0918932>] ieee80211_tx_pending+0xcc/0x170 [mac80211]
 [<c0121c43>] tasklet_action+0x3e/0x65

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 23:24:51 +01:00
Bob Copeland
9cbbffe2de mac80211: set NEED_TXPROCESSING for PERR frames
A user reported warnings in ath5k due to transmitting frames with no
rates set up.  The frames were Mesh PERR frames, and some debugging
showed an empty control block with just the vif pointer:

>  [  562.522682] XXX txinfo: 00000000: 00 00 00 00 00 00 00 00 00 00 00
>  00 00 00 00 00  ................
>  [  562.522688] XXX txinfo: 00000010: 00 00 00 00 00 00 00 00 54 b8 f2
>  db 00 00 00 00  ........T.......
>  [  562.522693] XXX txinfo: 00000020: 00 00 00 00 00 00 00 00 00 00 00
>  00 00 00 00 00  ................

Set the IEEE80211_TX_INTFL_NEED_TXPROCESSING flag to ensure that
rate control gets run before the frame is sent.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 23:22:21 +01:00
Arend van Spriel
1c18f1452a nl80211: allow user-space to set address for P2P_DEVICE
As per email discussion Jouni Malinen pointed out that:

"P2P message exchanges can be executed on the current operating channel
of any operation (both P2P and non-P2P station). These can be on 5 GHz
and even on 60 GHz (so yes, you _can_ do GO Negotiation on 60 GHz).

As an example, it would be possible to receive a GO Negotiation Request
frame on a 5 GHz only radio and then to complete GO Negotiation on that
band. This can happen both when connected to a P2P group (through client
discoverability mechanism) and when connected to a legacy AP (assuming
the station receive Probe Request frame from full scan in the beginning
of P2P device discovery)."

This means that P2P messages can be sent over different radio devices.
However, these should use the same P2P device address so it should be
able to provision this from user-space. This patch adds a parameter for
this to struct vif_params which should only be used during creation of
the P2P device interface.

Cc: Jouni Malinen <j@w1.fi>
Cc: Greg Goldman <ggoldman@broadcom.com>
Cc: Jithu Jance <jithu@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
[add error checking]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 23:20:32 +01:00
Eric Sandeen
37f13561de xfs: recalculate leaf entry pointer after compacting a dir2 block
Dave Jones hit this assert when doing a compile on recent git, with
CONFIG_XFS_DEBUG enabled:

XFS: Assertion failed: (char *)dup - (char *)hdr == be16_to_cpu(*xfs_dir2_data_unused_tag_p(dup)), file: fs/xfs/xfs_dir2_data.c, line: 828

Upon further digging, the tag found by xfs_dir2_data_unused_tag_p(dup)
contained "2" and not the proper offset, and I found that this value was
changed after the memmoves under "Use a stale leaf for our new entry."
in xfs_dir2_block_addname(), i.e.

                        memmove(&blp[mid + 1], &blp[mid],
                                (highstale - mid) * sizeof(*blp));

overwrote it.

What has happened is that the previous call to xfs_dir2_block_compact()
has rearranged things; it changes btp->count as well as the
blp array.  So after we make that call, we must recalculate the
proper pointer to the leaf entries by making another call to
xfs_dir2_block_leaf_p().

Dave provided a metadump image which led to a simple reproducer
(create a particular filename in the affected directory) and this
resolves the testcase as well as the bug on his live system.

Thanks also to dchinner for looking at this one with me.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Tested-by: Dave Jones <davej@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2013-01-16 16:08:55 -06:00
Brian Foster
ab7eac2200 xfs: remove int casts from debug dquot soft limit timer asserts
The int casts here make it easy to trigger an assert with a large
soft limit. For example, set a >4TB soft limit on an empty volume
to reproduce a (0 > -x) comparison due to an overflow of
d_blk_softlimit.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2013-01-16 16:08:40 -06:00
Mark Tinguely
91e4bac0b7 xfs: fix the multi-segment log buffer format
Per Dave Chinner suggestion, this patch:
 1) Corrects the detection of whether a multi-segment buffer is
    still tracking data.
 2) Clears all the buffer log formats for a multi-segment buffer.

Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2013-01-16 16:08:08 -06:00
Mark Tinguely
2d0e9df579 xfs: fix segment in xfs_buf_item_format_segment
Not every segment in a multi-segment buffer is dirty in a
transaction and they will not be outputted. The assert in
xfs_buf_item_format_segment() that checks for the at least
one chunk of data in the segment to be used is not necessary
true for multi-segmented buffers.

Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2013-01-16 16:07:56 -06:00
Mark Tinguely
0f22f9d0cd xfs: rename bli_format to avoid confusion with bli_formats
Rename the bli_format structure to __bli_format to avoid
accidently confusing them with the bli_formats pointer.

Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2013-01-16 16:07:37 -06:00
Mark Tinguely
d44d9bc68e xfs: use b_maps[] for discontiguous buffers
Commits starting at 77c1a08 introduced a multiple segment support
to xfs_buf. xfs_trans_buf_item_match() could not find a multi-segment
buffer in the transaction because it was looking at the single segment
block number rather than the multi-segment b_maps[0].bm.bn. This
results on a recursive buffer lock that can never be satisfied.

This patch:
 1) Changed the remaining b_map accesses to be b_maps[0] accesses.
 2) Renames the single segment b_map structure to __b_map to avoid
    future confusion.

Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
2013-01-16 16:07:11 -06:00
Marco Porsch
3b1c5a5307 {cfg,nl}80211: mesh power mode primitives and userspace access
Add the nl80211_mesh_power_mode enumeration which holds possible
values for the mesh power mode. These modes are unknown, active,
light sleep and deep sleep.

Add power_mode entry to the mesh config structure to hold the
user-configured default mesh power mode. This value will be used
for new peer links.

Add the dot11MeshAwakeWindowDuration value to the mesh config.
The awake window is a duration in TU describing how long the STA
will stay awake after transmitting its beacon in PS mode.

Add access routines to:
 - get/set local link-specific power mode (STA)
 - get remote STA's link-specific power mode (STA)
 - get remote STA's non-peer power mode (STA)
 - get/set default mesh power mode (mesh config)
 - get/set mesh awake window duration (mesh config)

All config changes may be done at mesh runtime and take effect
immediately.

Signed-off-by: Marco Porsch <marco@cozybit.com>
Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com>
Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
[fix commit message line length, error handling in set station]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 22:48:04 +01:00
Marco Porsch
9bdbf04db0 {cfg,nl,mac}80211: set beacon interval and DTIM period on mesh join
Move the default mesh beacon interval and DTIM period to cfg80211
and make them accessible to nl80211. This enables setting both
values when joining an MBSS.

Previously the DTIM parameter was not set by mac80211 so the
driver's default value was used.

Signed-off-by: Marco Porsch <marco@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 22:44:04 +01:00
Marco Porsch
eac70c135d mac80211: move add_tim to subfunction
This functions will be used for mesh beacons, too.

Signed-off-by: Marco Porsch <marco@cozybit.com>
[some formatting fixes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 22:43:22 +01:00
Marco Porsch
1617bab8db mac80211: update mesh peer link counter during userspace peering
The established peer link count is indicated in mesh beacons and
used for other internal tasks. Previously it was not updated when
authenticated peering is performed in userspace.

Signed-off-by: Marco Porsch <marco@cozybit.com>
Acked-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 22:40:56 +01:00
Marco Porsch
ea54fba209 nl80211: add range checks to mesh parameters
Ranges are taken from IEEE 802.11-2012, common sense or current
implementation requirements.

Signed-off-by: Marco Porsch <marco@cozybit.com>
Acked-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-16 22:40:20 +01:00
Andrew Cooper
9174adbee4 xen: Fix stack corruption in xen_failsafe_callback for 32bit PVOPS guests.
This fixes CVE-2013-0190 / XSA-40

There has been an error on the xen_failsafe_callback path for failed
iret, which causes the stack pointer to be wrong when entering the
iret_exc error path.  This can result in the kernel crashing.

In the classic kernel case, the relevant code looked a little like:

        popl %eax      # Error code from hypervisor
        jz 5f
        addl $16,%esp
        jmp iret_exc   # Hypervisor said iret fault
5:      addl $16,%esp
                       # Hypervisor said segment selector fault

Here, there are two identical addls on either option of a branch which
appears to have been optimised by hoisting it above the jz, and
converting it to an lea, which leaves the flags register unaffected.

In the PVOPS case, the code looks like:

        popl_cfi %eax         # Error from the hypervisor
        lea 16(%esp),%esp     # Add $16 before choosing fault path
        CFI_ADJUST_CFA_OFFSET -16
        jz 5f
        addl $16,%esp         # Incorrectly adjust %esp again
        jmp iret_exc

It is possible unprivileged userspace applications to cause this
behaviour, for example by loading an LDT code selector, then changing
the code selector to be not-present.  At this point, there is a race
condition where it is possible for the hypervisor to return back to
userspace from an interrupt, fault on its own iret, and inject a
failsafe_callback into the kernel.

This bug has been present since the introduction of Xen PVOPS support
in commit 5ead97c84 (xen: Core Xen implementation), in 2.6.23.

Signed-off-by: Frediano Ziglio <frediano.ziglio@citrix.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: stable@vger.kernel.org
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-16 16:17:42 -05:00
Bjørn Mork
3022551b6a net: qmi_wwan: add TP-LINK HSUPA Modem MA180
The driver description files gives these names to the vendor specific
functions on this modem:

 Diagnostics VID_2357&PID_0201&MI_00
 NMEA        VID_2357&PID_0201&MI_01
 Modem       VID_2357&PID_0201&MI_03
 Networkcard VID_2357&PID_0201&MI_04

The "Networkcard" function has been verified to support these QMI
services:
    ctl (1.3)
    wds (1.3)
    dms (1.2)
    nas (1.0)

Reported-by: Thomas Schäfer <tschaefer@t-online.de>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 16:16:23 -05:00
Tushar Behera
1b9c3a1bfb usbnet: dm9601: Fix incorrect command
commit 24b1042c4e ("usbnet: dm9601: apply introduced usb command
APIs") removes the distiction between DM_WRITE_REG and DM_WRITE_REGS
command. The distiction is reintroduced to the driver so that the
functionality of the driver remains same.

CC: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 15:55:07 -05:00
Dmitry Kasatkin
def3e8b9ee ima: set appraise status in fix mode only when xattr is fixed
When a file system is mounted read-only, setting the xattr value in
fix mode fails with an error code -EROFS.  The xattr should be fixed
after the file system is remounted read-write.  This patch verifies
that the set xattr succeeds, before setting the appraise status value
to INTEGRITY_PASS.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-01-16 15:47:07 -05:00
Dmitry Kasatkin
e90805656d evm: remove unused cleanup functions
EVM cannot be built as a kernel module. Remove the unncessary __exit
functions.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-01-16 15:47:05 -05:00
Mimi Zohar
7163a99384 ima: re-initialize IMA policy LSM info
Although the IMA policy does not change, the LSM policy can be
reloaded, leaving the IMA LSM based rules referring to the old,
stale LSM policy.  This patch updates the IMA LSM based rules
to reflect the reloaded LSM policy.

Reported-by: Sven Vermeulen <sven.vermeulen@siphos.be>
tested-by: Sven Vermeulen <sven.vermeulen@siphos.be>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Cc: Eric Paris <eparis@parisplace.org>
Cc: Casey Schaufler <casey@schaufler-ca.com>
2013-01-16 15:47:03 -05:00
Kirill Smelkov
3a55fb0d9f Tell the world we gave up on pushing CC_OPTIMIZE_FOR_SIZE
In commit 281dc5c5ec ("Give up on pushing CC_OPTIMIZE_FOR_SIZE") we
already changed the actual default value, but the help-text still
suggested 'y'. Fix the help text too, for all the same reasons.

Sadly, -Os keeps on generating some very suboptimal code for certain
cases, to the point where any I$ miss upside is swamped by the downside.
The main ones are:

 - using "rep movsb" for memcpy, even on CPU's where that is
   horrendously bad for performance.

 - not honoring branch prediction information, so any I$ footprint you
   win from smaller code, you lose from less code density in the I$.

 - using divide instructions when that is very expensive.

Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-16 12:42:57 -08:00
Chuansheng Liu
fbfc23ef90 mfd, TWL4030: TWL4030 need select REGMAP_I2C
Fix the build error:

  drivers/built-in.o: In function `twl_probe':
  drivers/mfd/twl-core.c:1256: undefined reference to `devm_regmap_init_i2c'
  make: *** [vmlinux] Error 1

Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[ Samuel is busy, taking it directly  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-16 12:36:22 -08:00
Ralf Baechle
30a4840a4c drivers/base/cpu.c: Fix typo in comment
[ We should make fun of people who can't speel too, but then we'd have
  no time for any real work at all  - Linus ]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-16 12:34:34 -08:00
Thadeu Lima de Souza Cascardo
d4fc9dc200 cxgb4: set coalesce parameters on all queues
The coalesce parameters was set only on the first queue, which caused
interrupt rates to be larger on all the other queues.

This patch allows interrupt rates to be reduced for certain workloads
and colaesce parameters by 41%.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Cc: steved@us.ibm.com
Cc: toml@us.ibm.com
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 15:28:23 -05:00
Olof Johansson
ad6f276173 Sunxi dt fixes for 3.8-rc's
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iEYEABECAAYFAlD27roACgkQGxsu9jQV9nbc1ACeI8OXnmOgTE9dvO54e6PsEGV4
 YtwAn0reO6wsjlK12fkGpM18HVFpEQzh
 =vqps
 -----END PGP SIGNATURE-----

Merge tag 'sunxi-fixes-for-3.8-rc4' of git://github.com/mripard/linux into fixes

From Maxime Ripard:
Sunxi dt fixes for 3.8-rc's

* tag 'sunxi-fixes-for-3.8-rc4' of git://github.com/mripard/linux:
  ARM: sunxi: Use the Synosys APB UART instead of ns8250
2013-01-16 12:27:47 -08:00
Cong Wang
f92d318023 netpoll: fix a rtnl lock assertion failure
v4: hold rtnl lock for the whole netpoll_setup()
v3: remove the comment
v2: use RCU read lock

This patch fixes the following warning:

[   72.013864] RTNL: assertion failed at net/core/dev.c (4955)
[   72.017758] Pid: 668, comm: netpoll-prep-v6 Not tainted 3.8.0-rc1+ #474
[   72.019582] Call Trace:
[   72.020295]  [<ffffffff8176653d>] netdev_master_upper_dev_get+0x35/0x58
[   72.022545]  [<ffffffff81784edd>] netpoll_setup+0x61/0x340
[   72.024846]  [<ffffffff815d837e>] store_enabled+0x82/0xc3
[   72.027466]  [<ffffffff815d7e51>] netconsole_target_attr_store+0x35/0x37
[   72.029348]  [<ffffffff811c3479>] configfs_write_file+0xe2/0x10c
[   72.030959]  [<ffffffff8115d239>] vfs_write+0xaf/0xf6
[   72.032359]  [<ffffffff81978a05>] ? sysret_check+0x22/0x5d
[   72.033824]  [<ffffffff8115d453>] sys_write+0x5c/0x84
[   72.035328]  [<ffffffff819789d9>] system_call_fastpath+0x16/0x1b

In case of other races, hold rtnl lock for the entire netpoll_setup() function.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 15:26:03 -05:00
Stephen Hemminger
adbbf69d1a MAINTAINERS: Stephen Hemminger email change
I changed my email because the vyatta.com mail server is now
redirected to brocade.com; and the Brocade mail system
is not friendly to Linux desktop users.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 15:18:41 -05:00
Jiri Kosina
e65b9ad222 lockdep, rwsem: fix down_write_nest_lock() if !CONFIG_DEBUG_LOCK_ALLOC
Commit 1b963c81b1 ("lockdep, rwsem: provide down_write_nest_lock()")
contains a bug in a codepath when CONFIG_DEBUG_LOCK_ALLOC is disabled,
which causes down_read() to be called instead of down_write() by mistake
on such configurations.  Fix that.

Reported-and-tested-by: Andrew Clayton <andrew@digital-domain.net>
Reported-and-tested-by: Zlatko Calusic <zlatko.calusic@iskon.hr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-16 12:13:20 -08:00
Stephen Hemminger
7db11f7596 vmxnet3: better RSS support
The VMXNET3 device provides RSS hash value for received packets,
but it is not being used.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 14:40:53 -05:00
Stephen Hemminger
66d3591036 vmxnet3: use static RSS key
Rather than generating a different RSS key on each boot, just use
a predetermined value that will map same flow to same value on
every device for more predictable testing. This is already done
on most hardware drivers.

Initial key value just some arbitrary bits extracted once
from /dev/random.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 14:40:52 -05:00
Stephen Hemminger
4db37a7856 vmxnet3: remove unused irq_share_mode
This static variable is never set, it initializes to 0 which
is VMXNET3_INTR_BUDDYSHARE, and never changes.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 14:40:52 -05:00
Stephen Hemminger
f32a2605bb vmxnet3: remove device counter
An atomic counter of devices present is maintained but never used.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-16 14:40:51 -05:00