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8 years agoInput: tsc200x - report proper input_dev name
Michael Welling [Wed, 20 Jul 2016 17:02:07 +0000 (10:02 -0700)]
Input: tsc200x - report proper input_dev name

Passes input_id struct to the common probe function for the tsc200x drivers
instead of just the bustype.

This allows for the use of the product variable to set the input_dev->name
variable according to the type of touchscreen used. Note that when we
introduced support for TSC2004 we started calling everything TSC200X, so
let's keep this quirk.

Signed-off-by: Michael Welling <mwelling@ieee.org>
Cc: stable@vger.kernel.org
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agotty/vt/keyboard: fix OOB access in do_compute_shiftstate()
Dmitry Torokhov [Mon, 27 Jun 2016 21:12:34 +0000 (14:12 -0700)]
tty/vt/keyboard: fix OOB access in do_compute_shiftstate()

The size of individual keymap in drivers/tty/vt/keyboard.c is NR_KEYS,
which is currently 256, whereas number of keys/buttons in input device (and
therefor in key_down) is much larger - KEY_CNT - 768, and that can cause
out-of-bound access when we do

sym = U(key_maps[0][k]);

with large 'k'.

To fix it we should not attempt iterating beyond smaller of NR_KEYS and
KEY_CNT.

Also while at it let's switch to for_each_set_bit() instead of open-coding
it.

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: synaptics-rmi4 - fix maximum size check for F12 control register 8
Andrew Duggan [Wed, 20 Jul 2016 00:53:59 +0000 (17:53 -0700)]
Input: synaptics-rmi4 - fix maximum size check for F12 control register 8

According to the RMI4 spec the maximum size of F12 control register 8 is
15 bytes. The current code incorrectly reports an error if control 8 is
greater then 14. Making sensors with a control register 8 with 15 bytes
unusable.

Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Reported-by: Chris Healy <cphealy@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: ts4800-ts - add missing of_node_put after calling of_parse_phandle
Peter Chen [Fri, 15 Jul 2016 16:32:54 +0000 (09:32 -0700)]
Input: ts4800-ts - add missing of_node_put after calling of_parse_phandle

of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: synaptics-rmi4 - use of_get_child_by_name() to fix refcount
Andrew Duggan [Thu, 14 Jul 2016 16:35:44 +0000 (09:35 -0700)]
Input: synaptics-rmi4 - use of_get_child_by_name() to fix refcount

Calling of_find_node_by_name() assumes that the caller has incremented
the refcount of the of_node being passed in. Currently, the caller is
not incrementing the refcount of the of_node which results in the node
being prematurely freed when of_find_node_by_name() calls of_node_put()
on it. Instead use of_get_child_by_name() which does not call put on the
of_node.

Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoRevert "Input: wacom_w8001 - drop use of ABS_MT_TOOL_TYPE"
Dmitry Torokhov [Thu, 14 Jul 2016 16:33:41 +0000 (09:33 -0700)]
Revert "Input: wacom_w8001 - drop use of ABS_MT_TOOL_TYPE"

This reverts commit 5f7e5445a2de848c66d2d80ba5479197e8287c33 because
removal of input_mt_report_slot_state() means we no longer generate
tracking IDs for the reported contacts.

Cc: stable@vger.kernel.org
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <pinglinux@gmail.com>
8 years agoInput: xpad - validate USB endpoint count during probe
Cameron Gutman [Wed, 29 Jun 2016 16:51:35 +0000 (09:51 -0700)]
Input: xpad - validate USB endpoint count during probe

This prevents a malicious USB device from causing an oops.

Signed-off-by: Cameron Gutman <aicommander@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: add SW_PEN_INSERTED define
Douglas Anderson [Tue, 28 Jun 2016 17:32:00 +0000 (10:32 -0700)]
Input: add SW_PEN_INSERTED define

Some devices with a pen may have a switch that can be used to detect
when the pen is inserted or removed to a slot on the device.  Let's add
a define to the input event codes so that everyone can be on the same
page for what event we should generate when the pen is inserted or
removed.

In general the pen switch could be used by the software on the device to
kick off any number of actions when the pen is inserted or removed.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: vmmouse - remove port reservation
Sinclair Yeh [Fri, 24 Jun 2016 00:37:34 +0000 (17:37 -0700)]
Input: vmmouse - remove port reservation

The VMWare EFI BIOS will expose port 0x5658 as an ACPI resource.  This
causes the port to be reserved by the APCI module as the system comes up,
making it unavailable to be reserved again by other drivers, thus
preserving this VMWare port for special use in a VMWare guest.

This port is designed to be shared among multiple VMWare services, such as
the VMMOUSE.  Because of this, VMMOUSE should not try to reserve this port
on its own.

The VMWare non-EFI BIOS does not do this to preserve compatibility with
existing/legacy VMs.  It is known that there is small chance a VM may be
configured such that these ports get reserved by other non-VMWare devices,
and if this ever happens, the result is undefined.

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Cc: <stable@vger.kernel.org> # 4.1-
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: elantech - add more IC body types to the list
Dmitry Torokhov [Tue, 21 Jun 2016 23:09:00 +0000 (16:09 -0700)]
Input: elantech - add more IC body types to the list

The touchpad in HP Pavilion 14-ab057ca reports it's version as 12 and
according to Elan both 11 and 12 are valid IC types and should be
identified as hw_version 4.

Reported-by: Patrick Lessard <Patrick.Lessard@cogeco.com>
Tested-by: Patrick Lessard <Patrick.Lessard@cogeco.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: wacom_w8001 - ignore invalid pen data packets
Ping Cheng [Thu, 23 Jun 2016 17:55:11 +0000 (10:55 -0700)]
Input: wacom_w8001 - ignore invalid pen data packets

ThinkPad X60 Tablet PC (pen only device) sometime posts
packets that are larger than W8001_PKTLEN_TPCPEN.

Reported-by: Chris J Arges <christopherarges@gmail.com>
Tested-by: Chris J Arges <christopherarges@gmail.com>
Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: wacom_w8001 - w8001_MAX_LENGTH should be 13
Ping Cheng [Thu, 23 Jun 2016 17:54:17 +0000 (10:54 -0700)]
Input: wacom_w8001 - w8001_MAX_LENGTH should be 13

Somehow the patch that added two-finger touch support forgot to update
W8001_MAX_LENGTH from 11 to 13.

Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: xpad - fix oops when attaching an unknown Xbox One gamepad
Cameron Gutman [Thu, 23 Jun 2016 17:24:42 +0000 (10:24 -0700)]
Input: xpad - fix oops when attaching an unknown Xbox One gamepad

Xbox One controllers have multiple interfaces which all have the
same class, subclass, and protocol. One of the these interfaces
has only a single endpoint. When Xpad attempts to bind to this
interface, it causes an oops when trying initialize the output URB
by trying to access the second endpoint's descriptor.

This situation was avoided for known Xbox One devices by checking
the XTYPE constant associated with the VID and PID tuple. However,
this breaks when new or previously unknown Xbox One controllers
are attached to the system.

This change addresses the problem by deriving the XTYPE for Xbox
One controllers based on the interface protocol before checking
the interface number.

Fixes: 1a48ff81b391 ("Input: xpad - add support for Xbox One controllers")
Signed-off-by: Cameron Gutman <aicommander@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoMAINTAINERS: add Pali Rohár as reviewer of ALPS PS/2 touchpad driver
Pali Rohár [Sun, 19 Jun 2016 00:47:38 +0000 (17:47 -0700)]
MAINTAINERS: add Pali Rohár as reviewer of ALPS PS/2 touchpad driver

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoMerge branch 'cec-defines' into for-linus
Dmitry Torokhov [Sun, 19 Jun 2016 00:25:08 +0000 (17:25 -0700)]
Merge branch 'cec-defines' into for-linus

Let's bring in HDMI CEC defines to ease merging CEC support in the next
merge window.

8 years agoInput: add HDMI CEC specific keycodes
Kamil Debski [Sat, 18 Jun 2016 17:10:56 +0000 (10:10 -0700)]
Input: add HDMI CEC specific keycodes

Add HDMI CEC specific keycodes to the keycodes definition.

Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: add BUS_CEC type
Hans Verkuil [Sat, 18 Jun 2016 17:10:26 +0000 (10:10 -0700)]
Input: add BUS_CEC type

Inputs can come in over the HDMI CEC bus, so add a new type for this.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: xpad - fix rumble on Xbox One controllers with 2015 firmware
Cameron Gutman [Wed, 1 Jun 2016 18:32:51 +0000 (11:32 -0700)]
Input: xpad - fix rumble on Xbox One controllers with 2015 firmware

Xbox One controllers that shipped with or were upgraded to the 2015
firmware discard the current rumble packets we send. This patch changes
the Xbox One rumble packet to a form that both the newer and older
firmware will accept.

It is based on changes made to support newer Xbox One controllers in
the SteamOS brewmaster-4.1 kernel branch.

Signed-off-by: Cameron Gutman <aicommander@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: pwm-beeper - fix - scheduling while atomic
Manfred Schlaegl [Fri, 27 May 2016 23:36:36 +0000 (16:36 -0700)]
Input: pwm-beeper - fix - scheduling while atomic

Pwm config may sleep so defer it using a worker.

On a Freescale i.MX53 based board we ran into "BUG: scheduling while
atomic" because input_inject_event locks interrupts, but
imx_pwm_config_v2 sleeps.

Tested on Freescale i.MX53 SoC with 4.6.0.

Signed-off-by: Manfred Schlaegl <manfred.schlaegl@gmx.at>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: xpad - xbox one elite controller support
Pavel Rojtberg [Fri, 27 May 2016 23:24:40 +0000 (16:24 -0700)]
Input: xpad - xbox one elite controller support

added the according id and incresed XPAD_PKT_LEN to 64 as the elite
controller sends at least 33 byte messages [1].
Verified to be working by [2].

[1]: https://franticrain.github.io/sniffs/XboxOneSniff.html
[2]: https://github.com/paroj/xpad/issues/23

Signed-off-by: Pierre-Loup A. Griffais <eduke32@plagman.net>
Signed-off-by: Pavel Rojtberg <rojtberg@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: xpad - add more third-party controllers
Pavel Rojtberg [Fri, 27 May 2016 23:24:20 +0000 (16:24 -0700)]
Input: xpad - add more third-party controllers

Signed-off-by: Pierre-Loup A. Griffais <eduke32@plagman.net>
Signed-off-by: Thomas Debesse <dev@illwieckz.net>
Signed-off-by: aronschatz <aronschatz@aselabs.com>
Signed-off-by: Pavel Rojtberg <rojtberg@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: xpad - prevent spurious input from wired Xbox 360 controllers
Cameron Gutman [Fri, 27 May 2016 23:23:50 +0000 (16:23 -0700)]
Input: xpad - prevent spurious input from wired Xbox 360 controllers

After initially connecting a wired Xbox 360 controller or sending it
a command to change LEDs, a status/response packet is interpreted as
controller input. This causes the state of buttons represented in
byte 2 of the controller data packet to be incorrect until the next
valid input packet. Wireless Xbox 360 controllers are not affected.

Writing a new value to the LED device while holding the Start button
and running jstest is sufficient to reproduce this bug. An event will
come through with the Start button released.

Xboxdrv also won't attempt to read controller input from a packet
where byte 0 is non-zero. It also checks that byte 1 is 0x14, but
that value differs between wired and wireless controllers and this
code is shared by both. I think just checking byte 0 is enough to
eliminate unwanted packets.

The following are some examples of 3-byte status packets I saw:
01 03 02
02 03 00
03 03 03
08 03 00

Signed-off-by: Cameron Gutman <aicommander@gmail.com>
Signed-off-by: Pavel Rojtberg <rojtberg@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: xpad - move pending clear to the correct location
Pavel Rojtberg [Fri, 27 May 2016 23:22:25 +0000 (16:22 -0700)]
Input: xpad - move pending clear to the correct location

otherwise we lose ff commands: https://github.com/paroj/xpad/issues/27

Signed-off-by: Pavel Rojtberg <rojtberg@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoInput: uinput - handle compat ioctl for UI_SET_PHYS
Ricky Liang [Fri, 20 May 2016 17:58:59 +0000 (10:58 -0700)]
Input: uinput - handle compat ioctl for UI_SET_PHYS

When running a 32-bit userspace on a 64-bit kernel, the UI_SET_PHYS
ioctl needs to be treated with special care, as it has the pointer
size encoded in the command.

Signed-off-by: Ricky Liang <jcliang@chromium.org>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
8 years agoMerge branch 'next' into for-linus
Dmitry Torokhov [Tue, 17 May 2016 00:25:08 +0000 (17:25 -0700)]
Merge branch 'next' into for-linus

Prepare first round of input updates for 4.7 merge window.

8 years agoLinux 4.6
Linus Torvalds [Sun, 15 May 2016 22:43:13 +0000 (15:43 -0700)]
Linux 4.6

8 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 15 May 2016 15:07:35 +0000 (08:07 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Thomas Gleixner:
 "Just the missing compat entry for the new pread/writev2"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Use compat version for preadv2 and pwritev2

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 14 May 2016 21:15:06 +0000 (14:15 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix mvneta/bm dependencies, from Arnd Bergmann.

 2) RX completion hw bug workaround in bnxt_en, from Michael Chan.

 3) Kernel pointer leak in nf_conntrack, from Linus.

 4) Hoplimit route attribute limits not enforced properly, from Paolo
    Abeni.

 5) qlcnic driver NULL deref fix from Dan Carpenter.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  arm64: bpf: jit JMP_JSET_{X,K}
  net/route: enforce hoplimit max value
  nf_conntrack: avoid kernel pointer value leak in slab name
  drivers: net: xgene: fix register offset
  drivers: net: xgene: fix statistics counters race condition
  drivers: net: xgene: fix ununiform latency across queues
  drivers: net: xgene: fix sharing of irqs
  drivers: net: xgene: fix IPv4 forward crash
  xen-netback: fix extra_info handling in xenvif_tx_err()
  net: mvneta: bm: fix dependencies again
  bnxt_en: Add workaround to detect bad opaque in rx completion (part 2)
  bnxt_en: Add workaround to detect bad opaque in rx completion (part 1)
  qlcnic: potential NULL dereference in qlcnic_83xx_get_minidump_template()

8 years agoarm64: bpf: jit JMP_JSET_{X,K}
Zi Shen Lim [Fri, 13 May 2016 06:37:58 +0000 (23:37 -0700)]
arm64: bpf: jit JMP_JSET_{X,K}

Original implementation commit e54bcde3d69d ("arm64: eBPF JIT compiler")
had the relevant code paths, but due to an oversight always fail jiting.

As a result, we had been falling back to BPF interpreter whenever a BPF
program has JMP_JSET_{X,K} instructions.

With this fix, we confirm that the corresponding tests in lib/test_bpf
continue to pass, and also jited.

...
[    2.784553] test_bpf: #30 JSET jited:1 188 192 197 PASS
[    2.791373] test_bpf: #31 tcpdump port 22 jited:1 325 677 625 PASS
[    2.808800] test_bpf: #32 tcpdump complex jited:1 323 731 991 PASS
...
[    3.190759] test_bpf: #237 JMP_JSET_K: if (0x3 & 0x2) return 1 jited:1 110 PASS
[    3.192524] test_bpf: #238 JMP_JSET_K: if (0x3 & 0xffffffff) return 1 jited:1 98 PASS
[    3.211014] test_bpf: #249 JMP_JSET_X: if (0x3 & 0x2) return 1 jited:1 120 PASS
[    3.212973] test_bpf: #250 JMP_JSET_X: if (0x3 & 0xffffffff) return 1 jited:1 89 PASS
...

Fixes: e54bcde3d69d ("arm64: eBPF JIT compiler")
Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Yang Shi <yang.shi@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/route: enforce hoplimit max value
Paolo Abeni [Fri, 13 May 2016 16:33:41 +0000 (18:33 +0200)]
net/route: enforce hoplimit max value

Currently, when creating or updating a route, no check is performed
in both ipv4 and ipv6 code to the hoplimit value.

The caller can i.e. set hoplimit to 256, and when such route will
 be used, packets will be sent with hoplimit/ttl equal to 0.

This commit adds checks for the RTAX_HOPLIMIT value, in both ipv4
ipv6 route code, substituting any value greater than 255 with 255.

This is consistent with what is currently done for ADVMSS and MTU
in the ipv4 code.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonf_conntrack: avoid kernel pointer value leak in slab name
Linus Torvalds [Sat, 14 May 2016 18:11:44 +0000 (11:11 -0700)]
nf_conntrack: avoid kernel pointer value leak in slab name

The slab name ends up being visible in the directory structure under
/sys, and even if you don't have access rights to the file you can see
the filenames.

Just use a 64-bit counter instead of the pointer to the 'net' structure
to generate a unique name.

This code will go away in 4.7 when the conntrack code moves to a single
kmemcache, but this is the backportable simple solution to avoiding
leaking kernel pointers to user space.

Fixes: 5b3501faa874 ("netfilter: nf_conntrack: per netns nf_conntrack_cachep")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 14 May 2016 18:59:43 +0000 (11:59 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs fixes from Al Viro:
 "Overlayfs fixes from Miklos, assorted fixes from me.

  Stable fodder of varying severity, all sat in -next for a while"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ovl: ignore permissions on underlying lookup
  vfs: add lookup_hash() helper
  vfs: rename: check backing inode being equal
  vfs: add vfs_select_inode() helper
  get_rock_ridge_filename(): handle malformed NM entries
  ecryptfs: fix handling of directory opening
  atomic_open(): fix the handling of create_error
  fix the copy vs. map logics in blk_rq_map_user_iov()
  do_splice_to(): cap the size before passing to ->splice_read()

8 years agoMerge branch 'xgene-fixes'
David S. Miller [Sat, 14 May 2016 01:12:07 +0000 (21:12 -0400)]
Merge branch 'xgene-fixes'

Iyappan Subramanian says:

====================
drivers: net: xgene: Bug fixes

This patch set addresses the following bug fixes that were found during testing.

  1. IPv4 forward test crash
    - drivers: net: xgene: fix IPv4 forward crash

  2. Sharing of irqs
    - drivers: net: xgene: fix sharing of irqs

  3. Ununiform latency across queues
    - drivers: net: xgene: fix ununiform latency across queues

  4. Fix statistics counters race condition
    - drivers: net: xgene: fix statistics counters race condition

  5. Correcting register offset and field lengths
    - drivers: net: xgene: fix register offset

v2: Address review comments from v1
- Defer TSO fix, and reposting all other patches from v1

v1:
- Initial version
====================

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: xgene: fix register offset
Iyappan Subramanian [Fri, 13 May 2016 23:53:01 +0000 (16:53 -0700)]
drivers: net: xgene: fix register offset

This patch fixes SG_RX_DV_GATE_REG_0_ADDR register offset
and ring state field lengths.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: xgene: fix statistics counters race condition
Iyappan Subramanian [Fri, 13 May 2016 23:53:00 +0000 (16:53 -0700)]
drivers: net: xgene: fix statistics counters race condition

This patch fixes the race condition on updating the statistics
counters by moving the counters to the ring structure.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: xgene: fix ununiform latency across queues
Iyappan Subramanian [Fri, 13 May 2016 23:52:59 +0000 (16:52 -0700)]
drivers: net: xgene: fix ununiform latency across queues

This patch addresses ununiform latency across queues by adding
more queues to match with, upto number of CPU cores.

Also, number of interrupts are increased and the channel numbers
are reordered.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: xgene: fix sharing of irqs
Iyappan Subramanian [Fri, 13 May 2016 23:52:58 +0000 (16:52 -0700)]
drivers: net: xgene: fix sharing of irqs

Since hardware doesn't allow sharing of interrupts,
this patch fixes the same by removing IRQF_SHARED flag.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agodrivers: net: xgene: fix IPv4 forward crash
Iyappan Subramanian [Fri, 13 May 2016 23:52:57 +0000 (16:52 -0700)]
drivers: net: xgene: fix IPv4 forward crash

This patch fixes the crash observed during IPv4 forward test by
setting the drop field in the dbptr.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Fri, 13 May 2016 23:26:46 +0000 (16:26 -0700)]
Merge branch 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup fixes from Tejun Heo:
 "During v4.6-rc1 cgroup namespace support was merged.  There is an
  issue where it's impossible to tell whether a given cgroup mount point
  is bind mounted or namespaced.  Serge has been working on the issue
  but it took longer than expected to resolve, so the late pull request.

  Given that it's a completely new feature and the patches don't touch
  anything else, the risk seems acceptable.  However, if this is too
  late, an alternative is plugging new cgroup ns creation for v4.6 and
  retrying for v4.7"

* 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: fix compile warning
  kernfs: kernfs_sop_show_path: don't return 0 after seq_dentry call
  cgroup, kernfs: make mountinfo show properly scoped path for cgroup namespaces
  kernfs_path_from_node_locked: don't overwrite nlen

8 years agoMerge branch 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Linus Torvalds [Fri, 13 May 2016 23:16:51 +0000 (16:16 -0700)]
Merge branch 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

Pull workqueue fix from Tejun Heo:
 "CPU hotplug callbacks can invoke DOWN_FAILED w/o preceding
  DOWN_PREPARE which can trigger a WARN_ON() in workqueue.

  The bug has been there for a very long time.  It only triggers if CPU
  down fails at a specific point and I don't think it has adverse
  effects other than the warning messages.  The fix is very low impact"

* 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: fix rebind bound workers warning

8 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 13 May 2016 19:21:17 +0000 (12:21 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:
 "This is a revert to fix an interactivity problem.

  The proper fixes for the problems that the reverted commit exposed are
  now in sched/core (consisting of 3 patches), but were too risky for
  v4.6 and will arrive in the v4.7 merge window"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "sched/fair: Fix fairness issue on migration"

8 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 13 May 2016 18:54:02 +0000 (11:54 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "An uncharacteristically large number of bugs popped up in the last
  week:

   - various tooling fixes, two crashes and build problems
   - two Intel PT fixes
   - an KNL uncore driver fix
   - an Intel PMU driver fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf stat: Fallback to user only counters when perf_event_paranoid > 1
  perf evsel: Handle EACCESS + perf_event_paranoid=2 in fallback()
  perf evsel: Improve EPERM error handling in open_strerror()
  tools lib traceevent: Do not reassign parg after collapse_tree()
  perf probe: Check if dwarf_getlocations() is available
  perf dwarf: Guard !x86_64 definitions under #ifdef else clause
  perf tools: Use readdir() instead of deprecated readdir_r()
  perf thread_map: Use readdir() instead of deprecated readdir_r()
  perf script: Use readdir() instead of deprecated readdir_r()
  perf tools: Use readdir() instead of deprecated readdir_r()
  perf/core: Disable the event on a truncated AUX record
  perf/x86/intel/pt: Generate PMI in the STOP region as well
  perf/x86: Fix undefined shift on 32-bit kernels
  perf/x86/msr: Fix SMI overflow
  perf/x86/intel/uncore: Fix CHA registers configuration procedure for Knights Landing platform
  perf diff: Fix duplicated output column

8 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Fri, 13 May 2016 16:52:00 +0000 (09:52 -0700)]
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Three more bug fixes for ARM SoCs this week:

   - The Atmel sama5d2 was registering the wrong NFC device type

   - On Atmel sam9x5, the power management controller had an incorrect
     register area size

   - On ARM64 Allwinner machine was not secting the generic irqchip
     code, causing build errors in some configurations"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: dts: at91: sam9x5: Fix the memory range assigned to the PMC
  arm64/sunxi: 4.6-rc1: Add dependency on generic irq chip
  ARM: dts: at91: sama5d2: use "atmel,sama5d3-nfc" compatible for nfc

8 years agoMerge tag 'regulator-fix-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 13 May 2016 16:46:00 +0000 (09:46 -0700)]
Merge tag 'regulator-fix-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "A small collection of driver specific fixes for the regulator
  subsysetem:

   - Fix handling of probe deferral for GPIO regulators

   - Fix a typo in the module alias for DA9053

   - Fix the definition of BUCK9 in the S2MPS11 driver.  This change
     looks larger than it is because an irregularity in the hardware
     means that the macro used to define bucks 6-10 needs duplicating
     and tweaking to have a separate macro for 9

   - Fix a series of errors in the definitions of the LDOs the AXP20x
     regulators, some of which had always been present and some of which
     were introduced in the merge window"

* tag 'regulator-fix-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: da9063: Correct module alias prefix to fix module autoloading
  regulator: axp20x: Fix axp22x ldo_io registration error on cold boot
  regulator: axp20x: Fix axp22x ldo_io voltage ranges
  regulator: axp20x: Fix LDO4 linear voltage range
  regulator: s2mps11: Fix invalid selector mask and voltages for buck9
  regulator: gpio: check return value of of_get_named_gpio

8 years agoMerge tag 'regmap-fix-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 13 May 2016 16:40:32 +0000 (09:40 -0700)]
Merge tag 'regmap-fix-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap fixes from Mark Brown:
 "This is rather too late so it'd be completely understandable if you
  don't want to pull it at this point, I had thought I'd sent this
  earlier but it seems I didn't.  Everything has been in -next for some
  time now.

  The main set of fixes here are mopping up some more issues with MMIO,
  fixing handling of endianness configuration in DT (which just wasn't
  working at all) and cases where the register and value endianness are
  different.

  There is also a fix for bulk register reads on SPMI"

* tag 'regmap-fix-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: spmi: Fix regmap_spmi_ext_read in multi-byte case
  regmap: mmio: Explicitly say little endian is the defualt in the bus config
  regmap: mmio: Parse endianness definitions from DT
  regmap: Fix implicit inclusion of device.h
  regmap: mmio: Fix value endianness selection
  regmap: fix documentation to match code

8 years agoMerge tag 'media/v4.6-6' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Fri, 13 May 2016 16:34:59 +0000 (09:34 -0700)]
Merge tag 'media/v4.6-6' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fix from Mauro Carvalho Chehab:
 "A revert fixing a breakage that caused an OOPS on all VB2-based DVB
  drivers.

  We already have a proper fix, but it sounds safer to keep it being
  tested for a while and not hurry, to avoid the risk of another
  regression, specially since this is meant to be c/c to stable.  So,
  for now, let's just revert the broken patch"

* tag 'media/v4.6-6' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  Revert "[media] videobuf2-v4l2: Verify planes array in buffer dequeueing"

8 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 13 May 2016 16:27:05 +0000 (09:27 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "A bunch of radeon displayport mode setting fixes, and some misc i915
  fixes.

  There is one revert, the MST audio code in i915 was causing some
  oopses, so we've decided just to drop it until next kernel when we can
  fix it properly"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/amdgpu: fix DP mode validation
  drm/radeon: fix DP mode validation
  drm/i915: Bail out of pipe config compute loop on LPT
  drm/radeon: fix PLL sharing on DCE6.1 (v2)
  drm/radeon: fix DP link training issue with second 4K monitor
  Revert "drm/i915: start adding dp mst audio"
  drm/i915/bdw: Add missing delay during L3 SQC credit programming
  drm/i915/lvds: separate border enable readout from panel fitter
  drm/i915: Update CDCLK_FREQ register on BDW after changing cdclk frequency

8 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Fri, 13 May 2016 16:21:31 +0000 (09:21 -0700)]
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fix from Herbert Xu:
 "This fixes a bug in the RSA self-test that may cause crashes on some
  architectures such as SPARC"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: testmgr - Use kmalloc memory for RSA input

8 years agoMerge remote-tracking branches 'regulator/fix/axp20x', 'regulator/fix/da9063', 'regul...
Mark Brown [Fri, 13 May 2016 10:11:08 +0000 (11:11 +0100)]
Merge remote-tracking branches 'regulator/fix/axp20x', 'regulator/fix/da9063', 'regulator/fix/gpio' and 'regulator/fix/s2mps11' into regulator-linus

8 years agoMerge remote-tracking branches 'regmap/fix/be', 'regmap/fix/doc' and 'regmap/fix...
Mark Brown [Fri, 13 May 2016 09:36:10 +0000 (10:36 +0100)]
Merge remote-tracking branches 'regmap/fix/be', 'regmap/fix/doc' and 'regmap/fix/spmi' into regmap-linus

8 years agoMerge remote-tracking branch 'regmap/fix/mmio' into regmap-linus
Mark Brown [Fri, 13 May 2016 09:36:09 +0000 (10:36 +0100)]
Merge remote-tracking branch 'regmap/fix/mmio' into regmap-linus

8 years agoMerge branch 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 13 May 2016 06:03:39 +0000 (16:03 +1000)]
Merge branch 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

DP mode validation regression fix.
* 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: fix DP mode validation
  drm/radeon: fix DP mode validation

8 years agoxen-netback: fix extra_info handling in xenvif_tx_err()
Paul Durrant [Thu, 12 May 2016 13:43:03 +0000 (14:43 +0100)]
xen-netback: fix extra_info handling in xenvif_tx_err()

Patch 562abd39 "xen-netback: support multiple extra info fragments
passed from frontend" contained a mistake which can result in an in-
correct number of responses being generated when handling errors
encountered when processing packets containing extra info fragments.
This patch fixes the problem.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reported-by: Jan Beulich <JBeulich@suse.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'perf-urgent-for-mingo-20160512' of git://git.kernel.org/pub/scm/linux...
Ingo Molnar [Fri, 13 May 2016 05:35:12 +0000 (07:35 +0200)]
Merge tag 'perf-urgent-for-mingo-20160512' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

- Fallback to usermode-only counters when perf_event_paranoid > 1, which
  is the case now (Arnaldo Carvalho de Melo)

- Do not reassign parg after collapse_tree() in libtraceevent, which
  may cause tool crashes (Steven Rostedt)

- Fix the build on Fedora Rawhide, where readdir_r() is deprecated and
  also wrt -Werror=unused-const-variable= + x86_32_regoffset_table on
  !x86_64 (Arnaldo Carvalho de Melo)

- Fix the build on Ubuntu 12.04.5, where dwarf_getlocations() isn't
  available, i.e. libdw-dev < 0.157 (Arnaldo Carvalho de Melo)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Fri, 13 May 2016 01:44:24 +0000 (18:44 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge fixes from Andrew Morton:
 "4 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: thp: calculate the mapcount correctly for THP pages during WP faults
  ksm: fix conflict between mmput and scan_get_next_rmap_item
  ocfs2: fix posix_acl_create deadlock
  ocfs2: revert using ocfs2_acl_chmod to avoid inode cluster lock hang

8 years agomm: thp: calculate the mapcount correctly for THP pages during WP faults
Andrea Arcangeli [Thu, 12 May 2016 22:42:25 +0000 (15:42 -0700)]
mm: thp: calculate the mapcount correctly for THP pages during WP faults

This will provide fully accuracy to the mapcount calculation in the
write protect faults, so page pinning will not get broken by false
positive copy-on-writes.

total_mapcount() isn't the right calculation needed in
reuse_swap_page(), so this introduces a page_trans_huge_mapcount()
that is effectively the full accurate return value for page_mapcount()
if dealing with Transparent Hugepages, however we only use the
page_trans_huge_mapcount() during COW faults where it strictly needed,
due to its higher runtime cost.

This also provide at practical zero cost the total_mapcount
information which is needed to know if we can still relocate the page
anon_vma to the local vma. If page_trans_huge_mapcount() returns 1 we
can reuse the page no matter if it's a pte or a pmd_trans_huge
triggering the fault, but we can only relocate the page anon_vma to
the local vma->anon_vma if we're sure it's only this "vma" mapping the
whole THP physical range.

Kirill A. Shutemov discovered the problem with moving the page
anon_vma to the local vma->anon_vma in a previous version of this
patch and another problem in the way page_move_anon_rmap() was called.

Andrew Morton discovered that CONFIG_SWAP=n wouldn't build in a
previous version, because reuse_swap_page must be a macro to call
page_trans_huge_mapcount from swap.h, so this uses a macro again
instead of an inline function. With this change at least it's a less
dangerous usage than it was before, because "page" is used only once
now, while with the previous code reuse_swap_page(page++) would have
called page_mapcount on page+1 and it would have increased page twice
instead of just once.

Dean Luick noticed an uninitialized variable that could result in a
rmap inefficiency for the non-THP case in a previous version.

Mike Marciniszyn said:

: Our RDMA tests are seeing an issue with memory locking that bisects to
: commit 61f5d698cc97 ("mm: re-enable THP")
:
: The test program registers two rather large MRs (512M) and RDMA
: writes data to a passive peer using the first and RDMA reads it back
: into the second MR and compares that data.  The sizes are chosen randomly
: between 0 and 1024 bytes.
:
: The test will get through a few (<= 4 iterations) and then gets a
: compare error.
:
: Tracing indicates the kernel logical addresses associated with the individual
: pages at registration ARE correct , the data in the "RDMA read response only"
: packets ARE correct.
:
: The "corruption" occurs when the packet crosse two pages that are not physically
: contiguous.   The second page reads back as zero in the program.
:
: It looks like the user VA at the point of the compare error no longer points to
: the same physical address as was registered.
:
: This patch totally resolves the issue!

Link: http://lkml.kernel.org/r/1462547040-1737-2-git-send-email-aarcange@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Reviewed-by: Dean Luick <dean.luick@intel.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Tested-by: Josh Collier <josh.d.collier@intel.com>
Cc: Marc Haber <mh+linux-kernel@zugschlus.de>
Cc: <stable@vger.kernel.org> [4.5]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoksm: fix conflict between mmput and scan_get_next_rmap_item
Zhou Chengming [Thu, 12 May 2016 22:42:21 +0000 (15:42 -0700)]
ksm: fix conflict between mmput and scan_get_next_rmap_item

A concurrency issue about KSM in the function scan_get_next_rmap_item.

task A (ksmd): |task B (the mm's task):
|
mm = slot->mm; |
down_read(&mm->mmap_sem); |
|
... |
|
spin_lock(&ksm_mmlist_lock); |
|
ksm_scan.mm_slot go to the next slot; |
|
spin_unlock(&ksm_mmlist_lock); |
|mmput() ->
| ksm_exit():
|
|spin_lock(&ksm_mmlist_lock);
|if (mm_slot && ksm_scan.mm_slot != mm_slot) {
| if (!mm_slot->rmap_list) {
| easy_to_free = 1;
| ...
|
|if (easy_to_free) {
| mmdrop(mm);
| ...
|
|So this mm_struct may be freed in the mmput().
|
up_read(&mm->mmap_sem); |

As we can see above, the ksmd thread may access a mm_struct that already
been freed to the kmem_cache.  Suppose a fork will get this mm_struct from
the kmem_cache, the ksmd thread then call up_read(&mm->mmap_sem), will
cause mmap_sem.count to become -1.

As suggested by Andrea Arcangeli, unmerge_and_remove_all_rmap_items has
the same SMP race condition, so fix it too.  My prev fix in function
scan_get_next_rmap_item will introduce a different SMP race condition, so
just invert the up_read/spin_unlock order as Andrea Arcangeli said.

Link: http://lkml.kernel.org/r/1462708815-31301-1-git-send-email-zhouchengming1@huawei.com
Signed-off-by: Zhou Chengming <zhouchengming1@huawei.com>
Suggested-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Geliang Tang <geliangtang@163.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Ding Tianhong <dingtianhong@huawei.com>
Cc: Li Bin <huawei.libin@huawei.com>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoocfs2: fix posix_acl_create deadlock
Junxiao Bi [Thu, 12 May 2016 22:42:18 +0000 (15:42 -0700)]
ocfs2: fix posix_acl_create deadlock

Commit 702e5bc68ad2 ("ocfs2: use generic posix ACL infrastructure")
refactored code to use posix_acl_create.  The problem with this function
is that it is not mindful of the cluster wide inode lock making it
unsuitable for use with ocfs2 inode creation with ACLs.  For example,
when used in ocfs2_mknod, this function can cause deadlock as follows.
The parent dir inode lock is taken when calling posix_acl_create ->
get_acl -> ocfs2_iop_get_acl which takes the inode lock again.  This can
cause deadlock if there is a blocked remote lock request waiting for the
lock to be downconverted.  And same deadlock happened in ocfs2_reflink.
This fix is to revert back using ocfs2_init_acl.

Fixes: 702e5bc68ad2 ("ocfs2: use generic posix ACL infrastructure")
Signed-off-by: Tariq Saeed <tariq.x.saeed@oracle.com>
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoocfs2: revert using ocfs2_acl_chmod to avoid inode cluster lock hang
Junxiao Bi [Thu, 12 May 2016 22:42:15 +0000 (15:42 -0700)]
ocfs2: revert using ocfs2_acl_chmod to avoid inode cluster lock hang

Commit 743b5f1434f5 ("ocfs2: take inode lock in ocfs2_iop_set/get_acl()")
introduced this issue.  ocfs2_setattr called by chmod command holds
cluster wide inode lock when calling posix_acl_chmod.  This latter
function in turn calls ocfs2_iop_get_acl and ocfs2_iop_set_acl.  These
two are also called directly from vfs layer for getfacl/setfacl commands
and therefore acquire the cluster wide inode lock.  If a remote
conversion request comes after the first inode lock in ocfs2_setattr,
OCFS2_LOCK_BLOCKED will be set.  And this will cause the second call to
inode lock from the ocfs2_iop_get_acl() to block indefinetly.

The deleted version of ocfs2_acl_chmod() calls __posix_acl_chmod() which
does not call back into the filesystem.  Therefore, we restore
ocfs2_acl_chmod(), modify it slightly for locking as needed, and use that
instead.

Fixes: 743b5f1434f5 ("ocfs2: take inode lock in ocfs2_iop_set/get_acl()")
Signed-off-by: Tariq Saeed <tariq.x.saeed@oracle.com>
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agonet: mvneta: bm: fix dependencies again
Arnd Bergmann [Wed, 11 May 2016 20:13:23 +0000 (22:13 +0200)]
net: mvneta: bm: fix dependencies again

I tried to fix this before, but my previous fix was incomplete
and we can still get the same link error in randconfig builds
because of the way that Kconfig treats the

default y if MVNETA=y && MVNETA_BM_ENABLE

line that does not actually trigger when MVNETA_BM_ENABLE=m,
unlike I intended.
Changing the line to use MVNETA_BM_ENABLE!=n however has
the desired effect and hopefully makes all configurations
work as expected.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 019ded3aa7c9 ("net: mvneta: bm: clarify dependencies")
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'keys-fixes-20160512' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 12 May 2016 20:00:33 +0000 (13:00 -0700)]
Merge tag 'keys-fixes-20160512' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull keyring fix from David Howells:
 "Fix ASN.1 indefinite length object parsing"

* tag 'keys-fixes-20160512' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  KEYS: Fix ASN.1 indefinite length object parsing

8 years agoMerge tag 'sound-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Thu, 12 May 2016 19:55:42 +0000 (12:55 -0700)]
Merge tag 'sound-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This is a pretty boring pull request as you wish: including a few
  small and trivial HD-audio and USB-audio quirks and a couple of small
  regression fixes in HD-audio"

* tag 'sound-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: usb-audio: Yet another Phoneix Audio device quirk
  ALSA: hda - Fix regression on ATI HDMI audio
  ALSA: hda - Fix subwoofer pin on ASUS N751 and N551
  ALSA: hda - Fix broken reconfig
  ALSA: hda - Fix white noise on Asus UX501VW headset
  ALSA: usb-audio: Quirk for yet another Phoenix Audio devices (v2)

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Thu, 12 May 2016 19:47:49 +0000 (12:47 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input subsystem fixes from Dmitry Torokhov.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: twl6040-vibra - fix DT node memory management
  Input: max8997-haptic - fix NULL pointer dereference
  Input: byd - update copyright header

8 years agoperf stat: Fallback to user only counters when perf_event_paranoid > 1
Arnaldo Carvalho de Melo [Thu, 12 May 2016 19:25:18 +0000 (16:25 -0300)]
perf stat: Fallback to user only counters when perf_event_paranoid > 1

After 0161028b7c8a ("perf/core: Change the default paranoia level to 2")
'perf stat' fails for users without CAP_SYS_ADMIN, so just use
'perf_evsel__fallback()' to have the same behaviour as 'perf record',
i.e. set perf_event_attr.exclude_kernel to 1.

Now:

  [acme@jouet linux]$ perf stat usleep 1

   Performance counter stats for 'usleep 1':

          0.352536      task-clock:u (msec)  #   0.423 CPUs utilized
                 0      context-switches:u   #   0.000 K/sec
                 0      cpu-migrations:u     #   0.000 K/sec
                49      page-faults:u        #   0.139 M/sec
           309,407      cycles:u             #   0.878 GHz
           243,791      instructions:u       #   0.79  insn per cycle
            49,622      branches:u           # 140.757 M/sec
             3,884      branch-misses:u      #   7.83% of all branches

       0.000834174 seconds time elapsed

  [acme@jouet linux]$

Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-b20jmx4dxt5hpaa9t2rroi0o@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agoperf evsel: Handle EACCESS + perf_event_paranoid=2 in fallback()
Arnaldo Carvalho de Melo [Thu, 12 May 2016 19:07:47 +0000 (16:07 -0300)]
perf evsel: Handle EACCESS + perf_event_paranoid=2 in fallback()

Now with the default for the kernel.perf_event_paranoid sysctl being 2 [1]
we need to fall back to :u, i.e. to set perf_event_attr.exclude_kernel
to 1.

Before:

  [acme@jouet linux]$ perf record usleep 1
  Error:
  You may not have permission to collect stats.

  Consider tweaking /proc/sys/kernel/perf_event_paranoid,
  which controls use of the performance events system by
  unprivileged users (without CAP_SYS_ADMIN).

  The current value is 2:

    -1: Allow use of (almost) all events by all users
  >= 0: Disallow raw tracepoint access by users without CAP_IOC_LOCK
  >= 1: Disallow CPU event access by users without CAP_SYS_ADMIN
  >= 2: Disallow kernel profiling by users without CAP_SYS_ADMIN
  [acme@jouet linux]$

After:

  [acme@jouet linux]$ perf record usleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.016 MB perf.data (7 samples) ]
  [acme@jouet linux]$ perf evlist
  cycles:u
  [acme@jouet linux]$ perf evlist -v
  cycles:u: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, exclude_kernel: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
  [acme@jouet linux]$

And if the user turns on verbose mode, an explanation will appear:

  [acme@jouet linux]$ perf record -v usleep 1
  Warning:
  kernel.perf_event_paranoid=2, trying to fall back to excluding kernel samples
  mmap size 528384B
  [ perf record: Woken up 1 times to write data ]
  Looking at the vmlinux_path (8 entries long)
  Using /lib/modules/4.6.0-rc7+/build/vmlinux for symbols
  [ perf record: Captured and wrote 0.016 MB perf.data (7 samples) ]
  [acme@jouet linux]$

[1] 0161028b7c8a ("perf/core: Change the default paranoia level to 2")

Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-b20jmx4dxt5hpaa9t2rroi0o@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agodrm/amdgpu: fix DP mode validation
Alex Deucher [Wed, 11 May 2016 20:21:03 +0000 (16:21 -0400)]
drm/amdgpu: fix DP mode validation

Switch the order of the loops to walk the rates on the top
so we exhaust all DP 1.1 rate/lane combinations before trying
DP 1.2 rate/lane combos.

This avoids selecting rates that are supported by the monitor,
but not the connector leading to valid modes getting rejected.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=95206

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
8 years agodrm/radeon: fix DP mode validation
Alex Deucher [Wed, 11 May 2016 20:16:53 +0000 (16:16 -0400)]
drm/radeon: fix DP mode validation

Switch the order of the loops to walk the rates on the top
so we exhaust all DP 1.1 rate/lane combinations before trying
DP 1.2 rate/lane combos.

This avoids selecting rates that are supported by the monitor,
but not the connector leading to valid modes getting rejected.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=95206

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
8 years agoperf evsel: Improve EPERM error handling in open_strerror()
Arnaldo Carvalho de Melo [Thu, 12 May 2016 18:44:55 +0000 (15:44 -0300)]
perf evsel: Improve EPERM error handling in open_strerror()

We were showing a hardcoded default value for the kernel.perf_event_paranoid
sysctl, now that it became more paranoid (1 -> 2 [1]), this would need to be
updated, instead show the current value:

  [acme@jouet linux]$ perf record ls
  Error:
  You may not have permission to collect stats.

  Consider tweaking /proc/sys/kernel/perf_event_paranoid,
  which controls use of the performance events system by
  unprivileged users (without CAP_SYS_ADMIN).

  The current value is 2:

    -1: Allow use of (almost) all events by all users
  >= 0: Disallow raw tracepoint access by users without CAP_IOC_LOCK
  >= 1: Disallow CPU event access by users without CAP_SYS_ADMIN
  >= 2: Disallow kernel profiling by users without CAP_SYS_ADMIN
  [acme@jouet linux]$

[1] 0161028b7c8a ("perf/core: Change the default paranoia level to 2")

Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-0gc4rdpg8d025r5not8s8028@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agoMerge tag 'pinctrl-v4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Thu, 12 May 2016 18:23:08 +0000 (11:23 -0700)]
Merge tag 'pinctrl-v4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pinctrl fix from Linus Walleij:
 "A single last pin control fix for v4.6.  t's tagged for stable and
  only hits a single driver with two added lines so should be safe.
  Tested in linux-next.

   - The pull up/down logic for the AT91 PIO4 controller was tilted: we
     need to mask the reverse pull when unmasking a pull direction.

     Setting both pull up & pull down is illegal and makes no sense"

* tag 'pinctrl-v4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: at91-pio4: fix pull-up/down logic

8 years agoworkqueue: fix rebind bound workers warning
Wanpeng Li [Wed, 11 May 2016 09:55:18 +0000 (17:55 +0800)]
workqueue: fix rebind bound workers warning

------------[ cut here ]------------
WARNING: CPU: 0 PID: 16 at kernel/workqueue.c:4559 rebind_workers+0x1c0/0x1d0
Modules linked in:
CPU: 0 PID: 16 Comm: cpuhp/0 Not tainted 4.6.0-rc4+ #31
Hardware name: IBM IBM System x3550 M4 Server -[7914IUW]-/00Y8603, BIOS -[D7E128FUS-1.40]- 07/23/2013
 0000000000000000 ffff881037babb58 ffffffff8139d885 0000000000000010
 0000000000000000 0000000000000000 0000000000000000 ffff881037babba8
 ffffffff8108505d ffff881037ba0000 000011cf3e7d6e60 0000000000000046
Call Trace:
 dump_stack+0x89/0xd4
 __warn+0xfd/0x120
 warn_slowpath_null+0x1d/0x20
 rebind_workers+0x1c0/0x1d0
 workqueue_cpu_up_callback+0xf5/0x1d0
 notifier_call_chain+0x64/0x90
 ? trace_hardirqs_on_caller+0xf2/0x220
 ? notify_prepare+0x80/0x80
 __raw_notifier_call_chain+0xe/0x10
 __cpu_notify+0x35/0x50
 notify_down_prepare+0x5e/0x80
 ? notify_prepare+0x80/0x80
 cpuhp_invoke_callback+0x73/0x330
 ? __schedule+0x33e/0x8a0
 cpuhp_down_callbacks+0x51/0xc0
 cpuhp_thread_fun+0xc1/0xf0
 smpboot_thread_fn+0x159/0x2a0
 ? smpboot_create_threads+0x80/0x80
 kthread+0xef/0x110
 ? wait_for_completion+0xf0/0x120
 ? schedule_tail+0x35/0xf0
 ret_from_fork+0x22/0x50
 ? __init_kthread_worker+0x70/0x70
---[ end trace eb12ae47d2382d8f ]---
notify_down_prepare: attempt to take down CPU 0 failed

This bug can be reproduced by below config w/ nohz_full= all cpus:

CONFIG_BOOTPARAM_HOTPLUG_CPU0=y
CONFIG_DEBUG_HOTPLUG_CPU0=y
CONFIG_NO_HZ_FULL=y

As Thomas pointed out:

| If a down prepare callback fails, then DOWN_FAILED is invoked for all
| callbacks which have successfully executed DOWN_PREPARE.
|
| But, workqueue has actually two notifiers. One which handles
| UP/DOWN_FAILED/ONLINE and one which handles DOWN_PREPARE.
|
| Now look at the priorities of those callbacks:
|
| CPU_PRI_WORKQUEUE_UP        = 5
| CPU_PRI_WORKQUEUE_DOWN      = -5
|
| So the call order on DOWN_PREPARE is:
|
| CB 1
| CB ...
| CB workqueue_up() -> Ignores DOWN_PREPARE
| CB ...
| CB X ---> Fails
|
| So we call up to CB X with DOWN_FAILED
|
| CB 1
| CB ...
| CB workqueue_up() -> Handles DOWN_FAILED
| CB ...
| CB X-1
|
| So the problem is that the workqueue stuff handles DOWN_FAILED in the up
| callback, while it should do it in the down callback. Which is not a good idea
| either because it wants to be called early on rollback...
|
| Brilliant stuff, isn't it? The hotplug rework will solve this problem because
| the callbacks become symetric, but for the existing mess, we need some
| workaround in the workqueue code.

The boot CPU handles housekeeping duty(unbound timers, workqueues,
timekeeping, ...) on behalf of full dynticks CPUs. It must remain
online when nohz full is enabled. There is a priority set to every
notifier_blocks:

workqueue_cpu_up > tick_nohz_cpu_down > workqueue_cpu_down

So tick_nohz_cpu_down callback failed when down prepare cpu 0, and
notifier_blocks behind tick_nohz_cpu_down will not be called any
more, which leads to workers are actually not unbound. Then hotplug
state machine will fallback to undo and online cpu 0 again. Workers
will be rebound unconditionally even if they are not unbound and
trigger the warning in this progress.

This patch fix it by catching !DISASSOCIATED to avoid rebind bound
workers.

Cc: Tejun Heo <tj@kernel.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: stable@vger.kernel.org
Suggested-by: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
8 years agoMerge tag 'at91-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux...
Arnd Bergmann [Thu, 12 May 2016 15:44:53 +0000 (17:44 +0200)]
Merge tag 'at91-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into fixes

Merge "Second AT91 fix PR for 4.6" from Nicolas Ferre:

- fix a regression on the clock subsystem while switching to syscon/regmap
  due to a stricter check of the register map.

* tag 'at91-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: dts: at91: sam9x5: Fix the memory range assigned to the PMC

8 years agocgroup: fix compile warning
Felipe Balbi [Thu, 12 May 2016 09:34:38 +0000 (12:34 +0300)]
cgroup: fix compile warning

commit 4f41fc59620f ("cgroup, kernfs: make mountinfo
 show properly scoped path for cgroup namespaces")
 added the following compile warning:

kernel/cgroup.c: In function ‘cgroup_show_path’:
kernel/cgroup.c:1634:15: warning: unused variable ‘ret’ [-Wunused-variable]
  int len = 0, ret = 0;
               ^
fix it.

Fixes: 4f41fc59620f ("cgroup, kernfs: make mountinfo show properly scoped path for cgroup namespaces")
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
8 years agokernfs: kernfs_sop_show_path: don't return 0 after seq_dentry call
Serge E. Hallyn [Thu, 12 May 2016 05:29:45 +0000 (00:29 -0500)]
kernfs: kernfs_sop_show_path: don't return 0 after seq_dentry call

Our caller expects 0 on success, not >0.

This fixes a bug in the patch

cgroup, kernfs: make mountinfo show properly scoped path for cgroup namespaces

where /sys does not show up in mountinfo, breaking criu.

Thanks for catching this, Andrei.

Reported-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
8 years agotools lib traceevent: Do not reassign parg after collapse_tree()
Steven Rostedt [Wed, 11 May 2016 19:09:36 +0000 (15:09 -0400)]
tools lib traceevent: Do not reassign parg after collapse_tree()

At the end of process_filter(), collapse_tree() was changed to update
the parg parameter, but the reassignment after the call wasn't removed.

What happens is that the "current_op" gets modified and freed and parg
is assigned to the new allocated argument. But after the call to
collapse_tree(), parg is assigned again to the just freed "current_op",
and this causes the tool to crash.

The current_op variable must also be assigned to NULL in case of error,
otherwise it will cause it to be free()ed twice.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: stable@vger.kernel.org # 3.14+
Fixes: 42d6194d133c ("tools lib traceevent: Refactor process_filter()")
Link: http://lkml.kernel.org/r/20160511150936.678c18a1@gandalf.local.home
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agoperf probe: Check if dwarf_getlocations() is available
Arnaldo Carvalho de Melo [Tue, 5 Apr 2016 14:33:41 +0000 (11:33 -0300)]
perf probe: Check if dwarf_getlocations() is available

If not, tell the user that:

  config/Makefile:273: Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157

And return -ENOTSUPP in die_get_var_range(), failing features that
need it, like the one pointed out above.

This fixes the build on older systems, such as Ubuntu 12.04.5.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Vinson Lee <vlee@freedesktop.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-9l7luqkq4gfnx7vrklkq4obs@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agoperf dwarf: Guard !x86_64 definitions under #ifdef else clause
Arnaldo Carvalho de Melo [Fri, 8 Apr 2016 15:04:29 +0000 (12:04 -0300)]
perf dwarf: Guard !x86_64 definitions under #ifdef else clause

To fix the build on Fedora Rawhide (gcc 6.0.0 20160311 (Red Hat 6.0.0-0.17):

    CC       /tmp/build/perf/arch/x86/util/dwarf-regs.o
  arch/x86/util/dwarf-regs.c:66:36: error: 'x86_32_regoffset_table' defined but not used [-Werror=unused-const-variable=]
   static const struct pt_regs_offset x86_32_regoffset_table[] = {
                                      ^~~~~~~~~~~~~~~~~~~~~~
  cc1: all warnings being treated as errors

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-fghuksc1u8ln82bof4lwcj0o@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agoperf tools: Use readdir() instead of deprecated readdir_r()
Arnaldo Carvalho de Melo [Fri, 8 Apr 2016 14:53:02 +0000 (11:53 -0300)]
perf tools: Use readdir() instead of deprecated readdir_r()

The readdir() function is thread safe as long as just one thread uses a
DIR, which is the case when parsing tracepoint event definitions, to
avoid breaking the build with glibc-2.23.90 (upcoming 2.24), use it
instead of readdir_r().

See: http://man7.org/linux/man-pages/man3/readdir.3.html

"However, in modern implementations (including the glibc implementation),
concurrent calls to readdir() that specify different directory streams
are thread-safe.  In cases where multiple threads must read from the
same directory stream, using readdir() with external synchronization is
still preferable to the use of the deprecated readdir_r(3) function."

Noticed while building on a Fedora Rawhide docker container.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-wddn49r6bz6wq4ee3dxbl7lo@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agoperf thread_map: Use readdir() instead of deprecated readdir_r()
Arnaldo Carvalho de Melo [Fri, 8 Apr 2016 14:31:24 +0000 (11:31 -0300)]
perf thread_map: Use readdir() instead of deprecated readdir_r()

The readdir() function is thread safe as long as just one thread uses a
DIR, which is the case in thread_map, so, to avoid breaking the build
with glibc-2.23.90 (upcoming 2.24), use it instead of readdir_r().

See: http://man7.org/linux/man-pages/man3/readdir.3.html

"However, in modern implementations (including the glibc implementation),
concurrent calls to readdir() that specify different directory streams
are thread-safe.  In cases where multiple threads must read from the
same directory stream, using readdir() with external synchronization is
still preferable to the use of the deprecated readdir_r(3) function."

Noticed while building on a Fedora Rawhide docker container.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-del8h2a0f40z75j4r42l96l0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agoperf script: Use readdir() instead of deprecated readdir_r()
Arnaldo Carvalho de Melo [Fri, 8 Apr 2016 14:25:59 +0000 (11:25 -0300)]
perf script: Use readdir() instead of deprecated readdir_r()

The readdir() function is thread safe as long as just one thread uses a
DIR, which is the case in 'perf script', so, to avoid breaking the build
with glibc-2.23.90 (upcoming 2.24), use it instead of readdir_r().

See: http://man7.org/linux/man-pages/man3/readdir.3.html

"However, in modern implementations (including the glibc implementation),
concurrent calls to readdir() that specify different directory streams
are thread-safe.  In cases where multiple threads must read from the
same directory stream, using readdir() with external synchronization is
still preferable to the use of the deprecated readdir_r(3) function."

Noticed while building on a Fedora Rawhide docker container.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-mt3xz7n2hl49ni2vx7kuq74g@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agoperf tools: Use readdir() instead of deprecated readdir_r()
Arnaldo Carvalho de Melo [Fri, 8 Apr 2016 14:32:15 +0000 (11:32 -0300)]
perf tools: Use readdir() instead of deprecated readdir_r()

The readdir() function is thread safe as long as just one thread uses a
DIR, which is the case when synthesizing events for pre-existing threads
by traversing /proc, so, to avoid breaking the build with glibc-2.23.90
(upcoming 2.24), use it instead of readdir_r().

See: http://man7.org/linux/man-pages/man3/readdir.3.html

"However, in modern implementations (including the glibc implementation),
concurrent calls to readdir() that specify different directory streams
are thread-safe.  In cases where multiple threads must read from the
same directory stream, using readdir() with external synchronization is
still preferable to the use of the deprecated readdir_r(3) function."

Noticed while building on a Fedora Rawhide docker container.

   CC       /tmp/build/perf/util/event.o
  util/event.c: In function '__event__synthesize_thread':
  util/event.c:466:2: error: 'readdir_r' is deprecated [-Werror=deprecated-declarations]
    while (!readdir_r(tasks, &dirent, &next) && next) {
    ^~~~~
  In file included from /usr/include/features.h:368:0,
                   from /usr/include/stdint.h:25,
                   from /usr/lib/gcc/x86_64-redhat-linux/6.0.0/include/stdint.h:9,
                   from /git/linux/tools/include/linux/types.h:6,
                   from util/event.c:1:
  /usr/include/dirent.h:189:12: note: declared here

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-i1vj7nyjp2p750rirxgrfd3c@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
8 years agoperf/core: Disable the event on a truncated AUX record
Alexander Shishkin [Tue, 10 May 2016 13:18:33 +0000 (16:18 +0300)]
perf/core: Disable the event on a truncated AUX record

When the PMU driver reports a truncated AUX record, it effectively means
that there is no more usable room in the event's AUX buffer (even though
there may still be some room, so that perf_aux_output_begin() doesn't take
action). At this point the consumer still has to be woken up and the event
has to be disabled, otherwise the event will just keep spinning between
perf_aux_output_begin() and perf_aux_output_end() until its context gets
unscheduled.

Again, for cpu-wide events this means never, so once in this condition,
they will be forever losing data.

Fix this by disabling the event and waking up the consumer in case of a
truncated AUX record.

Reported-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/1462886313-13660-3-git-send-email-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf/x86/intel/pt: Generate PMI in the STOP region as well
Alexander Shishkin [Tue, 10 May 2016 13:18:32 +0000 (16:18 +0300)]
perf/x86/intel/pt: Generate PMI in the STOP region as well

Currently, the PT driver always sets the PMI bit one region (page) before
the STOP region so that we can wake up the consumer before we run out of
room in the buffer and have to disable the event. However, we also need
an interrupt in the last output region, so that we actually get to disable
the event (if no more room from new data is available at that point),
otherwise hardware just quietly refuses to start, but the event is
scheduled in and we end up losing trace data till the event gets removed.

For a cpu-wide event it is even worse since there may not be any
re-scheduling at all and no chance for the ring buffer code to notice
that its buffer is filled up and the event needs to be disabled (so that
the consumer can re-enable it when it finishes reading the data out). In
other words, all the trace data will be lost after the buffer gets filled
up.

This patch makes PT also generate a PMI when the last output region is
full.

Reported-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/1462886313-13660-2-git-send-email-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agox86: Use compat version for preadv2 and pwritev2
Dmitry V. Levin [Wed, 11 May 2016 08:48:17 +0000 (11:48 +0300)]
x86: Use compat version for preadv2 and pwritev2

Similar to preadv and pwritev, preadv2 and pwritev2 need compat entries
in the 32-bit syscall table.

This bug was found by strace test suite.

Fixes: 4babf2c5efb7 ("x86: wire up preadv2 and pwritev2")
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20160511084817.GA29823@altlinux.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
8 years agoKEYS: Fix ASN.1 indefinite length object parsing
David Howells [Tue, 23 Feb 2016 11:03:12 +0000 (11:03 +0000)]
KEYS: Fix ASN.1 indefinite length object parsing

This fixes CVE-2016-0758.

In the ASN.1 decoder, when the length field of an ASN.1 value is extracted,
it isn't validated against the remaining amount of data before being added
to the cursor.  With a sufficiently large size indicated, the check:

datalen - dp < 2

may then fail due to integer overflow.

Fix this by checking the length indicated against the amount of remaining
data in both places a definite length is determined.

Whilst we're at it, make the following changes:

 (1) Check the maximum size of extended length does not exceed the capacity
     of the variable it's being stored in (len) rather than the type that
     variable is assumed to be (size_t).

 (2) Compare the EOC tag to the symbolic constant ASN1_EOC rather than the
     integer 0.

 (3) To reduce confusion, move the initialisation of len outside of:

for (len = 0; n > 0; n--) {

     since it doesn't have anything to do with the loop counter n.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: David Woodhouse <David.Woodhouse@intel.com>
Acked-by: Peter Jones <pjones@redhat.com>
8 years agoperf/x86: Fix undefined shift on 32-bit kernels
Andrey Ryabinin [Wed, 11 May 2016 13:51:51 +0000 (16:51 +0300)]
perf/x86: Fix undefined shift on 32-bit kernels

Jim reported:

UBSAN: Undefined behaviour in arch/x86/events/intel/core.c:3708:12
shift exponent 35 is too large for 32-bit type 'long unsigned int'

The use of 'unsigned long' type obviously is not correct here, make it
'unsigned long long' instead.

Reported-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Imre Palik <imrep@amazon.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: 2c33645d366d ("perf/x86: Honor the architectural performance monitoring version")
Link: http://lkml.kernel.org/r/1462974711-10037-1-git-send-email-aryabinin@virtuozzo.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf/x86/msr: Fix SMI overflow
Peter Zijlstra [Tue, 10 May 2016 12:16:54 +0000 (14:16 +0200)]
perf/x86/msr: Fix SMI overflow

We compute 'delta' and properly sign extend it and then ignore it and
recompute the raw value, loosing the sign extention.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: kan.liang@intel.com
Cc: linux-kernel@vger.kernel.org
Cc: luto@kernel.org
Cc: ray.huang@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoperf/x86/intel/uncore: Fix CHA registers configuration procedure for Knights Landing...
hchrzani [Mon, 9 May 2016 07:36:59 +0000 (09:36 +0200)]
perf/x86/intel/uncore: Fix CHA registers configuration procedure for Knights Landing platform

CHA events in Knights Landing platform require programming filter registers properly.
Remote node, local node and NonNearMemCachable bits should be set to 1 at all times.

Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Signed-off-by: Lawrence F Meadows <lawrence.f.meadows@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: bp@suse.de
Cc: harish.chegondi@intel.com
Cc: hpa@zytor.com
Cc: izumi.taku@jp.fujitsu.com
Cc: kan.liang@intel.com
Cc: lukasz.anaczkowski@intel.com
Cc: vthakkar1994@gmail.com
Fixes: 77af0037de0a ('perf/x86/intel/uncore: Add Knights Landing uncore PMU support')
Link: http://lkml.kernel.org/r/1462779419-17115-2-git-send-email-hubert.chrzaniuk@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
8 years agoMerge branch 'bnxt_en-fixes'
David S. Miller [Thu, 12 May 2016 03:46:09 +0000 (23:46 -0400)]
Merge branch 'bnxt_en-fixes'

Michael Chan says:

====================
bnxt_en: Add workaround to detect bad opaque in rx completion.

2-part workaround for this hardware bug.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobnxt_en: Add workaround to detect bad opaque in rx completion (part 2)
Michael Chan [Tue, 10 May 2016 23:18:00 +0000 (19:18 -0400)]
bnxt_en: Add workaround to detect bad opaque in rx completion (part 2)

Add detection and recovery code when the hardware returned opaque value
does not match the expected consumer index.  Once the issue is detected,
we skip the processing of all RX and LRO/GRO packets.  These completion
entries are discarded without sending the SKB to the stack and without
producing new buffers.  The function will be reset from a workqueue.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobnxt_en: Add workaround to detect bad opaque in rx completion (part 1)
Michael Chan [Tue, 10 May 2016 23:17:59 +0000 (19:17 -0400)]
bnxt_en: Add workaround to detect bad opaque in rx completion (part 1)

There is a rare hardware bug that can cause a bad opaque value in the RX
or TPA completion.  When this happens, the hardware may have used the
same buffer twice for 2 rx packets.  In addition, the driver will also
crash later using the bad opaque as the index into the ring.

The rx opaque value is predictable and is always monotonically increasing.
The workaround is to keep track of the expected next opaque value and
compare it with the one returned by hardware during RX and TPA start
completions.  If they miscompare, we will not process any more RX and
TPA completions and exit NAPI.  We will then schedule a workqueue to
reset the function.

This patch adds the logic to keep track of the next rx consumer index.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqlcnic: potential NULL dereference in qlcnic_83xx_get_minidump_template()
Dan Carpenter [Tue, 10 May 2016 19:20:04 +0000 (22:20 +0300)]
qlcnic: potential NULL dereference in qlcnic_83xx_get_minidump_template()

If qlcnic_fw_cmd_get_minidump_temp() fails then "fw_dump->tmpl_hdr" is
NULL or possibly freed.  It can lead to an oops later.

Fixes: d01a6d3c8ae1 ('qlcnic: Add support to enable capability to extend minidump for iSCSI')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Thu, 12 May 2016 00:05:36 +0000 (10:05 +1000)]
Merge branch 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

Two some radeon display fixes.

* 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: fix PLL sharing on DCE6.1 (v2)
  drm/radeon: fix DP link training issue with second 4K monitor

8 years agoMerge tag 'drm-intel-fixes-2016-05-11' of git://anongit.freedesktop.org/drm-intel...
Dave Airlie [Thu, 12 May 2016 00:05:06 +0000 (10:05 +1000)]
Merge tag 'drm-intel-fixes-2016-05-11' of git://anongit.freedesktop.org/drm-intel into drm-fixes

Misc intel fixes, reverting MST audio which was causing oops for now.

* tag 'drm-intel-fixes-2016-05-11' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Bail out of pipe config compute loop on LPT
  Revert "drm/i915: start adding dp mst audio"
  drm/i915/bdw: Add missing delay during L3 SQC credit programming
  drm/i915/lvds: separate border enable readout from panel fitter
  drm/i915: Update CDCLK_FREQ register on BDW after changing cdclk frequency

8 years agoRevert "[media] videobuf2-v4l2: Verify planes array in buffer dequeueing"
Mauro Carvalho Chehab [Wed, 11 May 2016 16:09:34 +0000 (13:09 -0300)]
Revert "[media] videobuf2-v4l2: Verify planes array in buffer dequeueing"

This patch causes a Kernel panic when called on a DVB driver.

This was also reported by David R <david@unsolicited.net>:

May  7 14:47:35 server kernel: [  501.247123] BUG: unable to handle kernel NULL pointer dereference at 0000000000000004
May  7 14:47:35 server kernel: [  501.247239] IP: [<ffffffffa0222c71>] __verify_planes_array.isra.3+0x1/0x80 [videobuf2_v4l2]
May  7 14:47:35 server kernel: [  501.247354] PGD cae6f067 PUD ca99c067 PMD 0
May  7 14:47:35 server kernel: [  501.247426] Oops: 0000 [#1] SMP
May  7 14:47:35 server kernel: [  501.247482] Modules linked in: xfs tun xt_connmark xt_TCPMSS xt_tcpmss xt_owner xt_REDIRECT nf_nat_redirect xt_nat ipt_MASQUERADE nf_nat_masquerade_ipv4 ts_kmp ts_bm xt_string ipt_REJECT nf_reject_ipv4 xt_recent xt_conntrack xt_multiport xt_pkttype xt_tcpudp xt_mark nf_log_ipv4 nf_log_common xt_LOG xt_limit iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter ip_tables ip6table_filter ip6_tables x_tables pppoe pppox dm_crypt ts2020 regmap_i2c ds3000 cx88_dvb dvb_pll cx88_vp3054_i2c mt352 videobuf2_dvb cx8800 cx8802 cx88xx pl2303 tveeprom videobuf2_dma_sg ppdev videobuf2_memops videobuf2_v4l2 videobuf2_core dvb_usb_digitv snd_hda_codec_via snd_hda_codec_hdmi snd_hda_codec_generic radeon dvb_usb snd_hda_intel amd64_edac_mod serio_raw snd_hda_codec edac_core fbcon k10temp bitblit softcursor snd_hda_core font snd_pcm_oss i2c_piix4 snd_mixer_oss tileblit drm_kms_helper syscopyarea snd_pcm snd_seq_dummy sysfillrect snd_seq_oss sysimgblt fb_sys_fops ttm snd_seq_midi r8169 snd_rawmidi drm snd_seq_midi_event e1000e snd_seq snd_seq_device snd_timer snd ptp pps_core i2c_algo_bit soundcore parport_pc ohci_pci shpchp tpm_tis tpm nfsd auth_rpcgss oid_registry hwmon_vid exportfs nfs_acl mii nfs bonding lockd grace lp sunrpc parport
May  7 14:47:35 server kernel: [  501.249564] CPU: 1 PID: 6889 Comm: vb2-cx88[0] Not tainted 4.5.3 #3
May  7 14:47:35 server kernel: [  501.249644] Hardware name: System manufacturer System Product Name/M4A785TD-V EVO, BIOS 0211    07/08/2009
May  7 14:47:35 server kernel: [  501.249767] task: ffff8800aebf3600 ti: ffff8801e07a0000 task.ti: ffff8801e07a0000
May  7 14:47:35 server kernel: [  501.249861] RIP: 0010:[<ffffffffa0222c71>]  [<ffffffffa0222c71>] __verify_planes_array.isra.3+0x1/0x80 [videobuf2_v4l2]
May  7 14:47:35 server kernel: [  501.250002] RSP: 0018:ffff8801e07a3de8  EFLAGS: 00010086
May  7 14:47:35 server kernel: [  501.250071] RAX: 0000000000000283 RBX: ffff880210dc5000 RCX: 0000000000000283
May  7 14:47:35 server kernel: [  501.250161] RDX: ffffffffa0222cf0 RSI: 0000000000000000 RDI: ffff880210dc5014
May  7 14:47:35 server kernel: [  501.250251] RBP: ffff8801e07a3df8 R08: ffff8801e07a0000 R09: 0000000000000000
May  7 14:47:35 server kernel: [  501.250348] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8800cda2a9d8
May  7 14:47:35 server kernel: [  501.250438] R13: ffff880210dc51b8 R14: 0000000000000000 R15: ffff8800cda2a828
May  7 14:47:35 server kernel: [  501.250528] FS:  00007f5b77fff700(0000) GS:ffff88021fc40000(0000) knlGS:00000000adaffb40
May  7 14:47:35 server kernel: [  501.250631] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
May  7 14:47:35 server kernel: [  501.250704] CR2: 0000000000000004 CR3: 00000000ca19d000 CR4: 00000000000006e0
May  7 14:47:35 server kernel: [  501.250794] Stack:
May  7 14:47:35 server kernel: [  501.250822]  ffff8801e07a3df8 ffffffffa0222cfd ffff8801e07a3e70 ffffffffa0236beb
May  7 14:47:35 server kernel: [  501.250937]  0000000000000283 ffff8801e07a3e94 0000000000000000 0000000000000000
May  7 14:47:35 server kernel: [  501.251051]  ffff8800aebf3600 ffffffff8108d8e0 ffff8801e07a3e38 ffff8801e07a3e38
May  7 14:47:35 server kernel: [  501.251165] Call Trace:
May  7 14:47:35 server kernel: [  501.251200]  [<ffffffffa0222cfd>] ? __verify_planes_array_core+0xd/0x10 [videobuf2_v4l2]
May  7 14:47:35 server kernel: [  501.251306]  [<ffffffffa0236beb>] vb2_core_dqbuf+0x2eb/0x4c0 [videobuf2_core]
May  7 14:47:35 server kernel: [  501.251398]  [<ffffffff8108d8e0>] ? prepare_to_wait_event+0x100/0x100
May  7 14:47:35 server kernel: [  501.251482]  [<ffffffffa023855b>] vb2_thread+0x1cb/0x220 [videobuf2_core]
May  7 14:47:35 server kernel: [  501.251569]  [<ffffffffa0238390>] ? vb2_core_qbuf+0x230/0x230 [videobuf2_core]
May  7 14:47:35 server kernel: [  501.251662]  [<ffffffffa0238390>] ? vb2_core_qbuf+0x230/0x230 [videobuf2_core]
May  7 14:47:35 server kernel: [  501.255982]  [<ffffffff8106f984>] kthread+0xc4/0xe0
May  7 14:47:35 server kernel: [  501.260292]  [<ffffffff8106f8c0>] ? kthread_park+0x50/0x50
May  7 14:47:35 server kernel: [  501.264615]  [<ffffffff81697a5f>] ret_from_fork+0x3f/0x70
May  7 14:47:35 server kernel: [  501.268962]  [<ffffffff8106f8c0>] ? kthread_park+0x50/0x50
May  7 14:47:35 server kernel: [  501.273216] Code: 0d 01 74 16 48 8b 46 28 48 8b 56 30 48 89 87 d0 01 00 00 48 89 97 d8 01 00 00 5d c3 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 <8b> 46 04 48 89 e5 8d 50 f7 31 c0 83 fa 01 76 02 5d c3 48 83 7e
May  7 14:47:35 server kernel: [  501.282146] RIP  [<ffffffffa0222c71>] __verify_planes_array.isra.3+0x1/0x80 [videobuf2_v4l2]
May  7 14:47:35 server kernel: [  501.286391]  RSP <ffff8801e07a3de8>
May  7 14:47:35 server kernel: [  501.290619] CR2: 0000000000000004
May  7 14:47:35 server kernel: [  501.294786] ---[ end trace b2b354153ccad110 ]---

This reverts commit 2c1f6951a8a82e6de0d82b1158b5e493fc6c54ab.

Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: stable@vger.kernel.org
Fixes: 2c1f6951a8a8 ("[media] videobuf2-v4l2: Verify planes array in buffer dequeueing")
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
8 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Wed, 11 May 2016 20:17:12 +0000 (13:17 -0700)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a couple of small fixes: one is a potential uninitialised
  error variable in the alua code, potentially causing spurious failures
  and the other is a problem caused by the conversion of SCSI to
  hostwide tags which resulted in the qla1280 driver always failing in
  host initialisation"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  qla1280: Don't allocate 512kb of host tags
  scsi_dh_alua: uninitialized variable in alua_rtpg()

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 11 May 2016 19:52:05 +0000 (12:52 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking fixes from David Miller:
 "Hopefully the last round of fixes this release, fingers crossed :)

   1) Initialize static nf_conntrack_locks_all_lock properly, from
      Florian Westphal.

   2) Need to cancel pending work when destroying IDLETIMER entries,
      from Liping Zhang.

   3) Fix TX param usage when sending TSO over iwlwifi devices, from
      Emmanuel Grumbach.

   4) NFACCT quota params not validated properly, from Phil Turnbull.

   5) Resolve more glibc vs.  kernel header conflicts, from Mikko
      Tapeli.

   6) Missing IRQ free in ravb_close(), from Geert Uytterhoeven.

   7) Fix infoleak in x25, from Kangjie Lu.

   8) Similarly in thunderx driver, from Heinrich Schuchardt.

   9) tc_ife.h uapi header not exported properly, from Jamal Hadi Salim.

  10) Don't reenable PHY interreupts if device is in polling mode, from
      Shaohui Xie.

  11) Packet scheduler actions late binding was not being handled
      properly at all, from Jamal Hadi Salim.

  12) Fix binding of conntrack entries to helpers in openvswitch, from
      Joe Stringer"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (21 commits)
  gre: do not keep the GRE header around in collect medata mode
  openvswitch: Fix cached ct with helper.
  net sched: ife action fix late binding
  net sched: skbedit action fix late binding
  net sched: simple action fix late binding
  net sched: mirred action fix late binding
  net sched: ipt action fix late binding
  net sched: vlan action fix late binding
  net: phylib: fix interrupts re-enablement in phy_start
  tcp: refresh skb timestamp at retransmit time
  net: nps_enet: bug fix - handle lost tx interrupts
  net: nps_enet: Tx handler synchronization
  export tc ife uapi header
  net: thunderx: avoid exposing kernel stack
  net: fix a kernel infoleak in x25 module
  ravb: Add missing free_irq() call to ravb_close()
  uapi glibc compat: fix compile errors when glibc net/if.h included before linux/if.h
  netfilter: nfnetlink_acct: validate NFACCT_QUOTA parameter
  iwlwifi: mvm: don't override the rate with the AMSDU len
  netfilter: IDLETIMER: fix race condition when destroy the target
  ...

8 years agogre: do not keep the GRE header around in collect medata mode
Jiri Benc [Wed, 11 May 2016 13:53:57 +0000 (15:53 +0200)]
gre: do not keep the GRE header around in collect medata mode

For ipgre interface in collect metadata mode, it doesn't make sense for the
interface to be of ARPHRD_IPGRE type. The outer header of received packets
is not needed, as all the information from it is present in metadata_dst. We
already don't set ipgre_header_ops for collect metadata interfaces, which is
the only consumer of mac_header pointing to the outer IP header.

Just set the interface type to ARPHRD_NONE in collect metadata mode for
ipgre (not gretap, that still correctly stays ARPHRD_ETHER) and reset
mac_header.

Fixes: a64b04d86d14 ("gre: do not assign header_ops in collect metadata mode")
Fixes: 2e15ea390e6f4 ("ip_gre: Add support to collect tunnel metadata.")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoopenvswitch: Fix cached ct with helper.
Joe Stringer [Wed, 11 May 2016 17:29:26 +0000 (10:29 -0700)]
openvswitch: Fix cached ct with helper.

When using conntrack helpers from OVS, a common configuration is to
perform a lookup without specifying a helper, then go through a
firewalling policy, only to decide to attach a helper afterwards.

In this case, the initial lookup will cause a ct entry to be attached to
the skb, then the later commit with helper should attach the helper and
confirm the connection. However, the helper attachment has been missing.
If the user has enabled automatic helper attachment, then this issue
will be masked as it will be applied in init_conntrack(). It is also
masked if the action is executed from ovs_packet_cmd_execute() as that
will construct a fresh skb.

This patch fixes the issue by making an explicit call to try to assign
the helper if there is a discrepancy between the action's helper and the
current skb->nfct.

Fixes: cae3a2627520 ("openvswitch: Allow attaching helpers to ct action")
Signed-off-by: Joe Stringer <joe@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agox86/extable: ensure entries are swapped completely when sorting
Mathias Krause [Tue, 10 May 2016 21:07:02 +0000 (23:07 +0200)]
x86/extable: ensure entries are swapped completely when sorting

The x86 exception table sorting was changed in commit 29934b0fb8ff
("x86/extable: use generic search and sort routines") to use the arch
independent code in lib/extable.c.  However, the patch was mangled
somehow on its way into the kernel from the last version posted at [1].
The committed version kind of attempted to incorporate the changes of
commit 548acf19234d ("x86/mm: Expand the exception table logic to allow
new handling options") as in _completely_ _ignoring_ the x86 specific
'handler' member of struct exception_table_entry.  This effectively
broke the sorting as entries will only partly be swapped now.

Fortunately, the x86 Kconfig selects BUILDTIME_EXTABLE_SORT, so the
exception table doesn't need to be sorted at runtime. However, in case
that ever changes, we better not break the exception table sorting just
because of that.

[ Ard Biesheuvel points out that BUILDTIME_EXTABLE_SORT applies to the
  core image only, but we still rely on the sorting routines for modules
  in that case - Linus ]

Fix this by providing a swap_ex_entry_fixup() macro that takes care of
the 'handler' member.

[1] https://lkml.org/lkml/2016/1/27/232

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Fixes: 29934b0fb8f ("x86/extable: use generic search and sort routines")
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: H. Peter Anvin <hpa@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
8 years agoMerge tag 'spi-fix-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Linus Torvalds [Wed, 11 May 2016 17:21:16 +0000 (10:21 -0700)]
Merge tag 'spi-fix-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A bunch of small driver specific fixes that have come up, none of them
  remarkable in themselves.  One fixes a regression introduced in the
  merge window and another two are targetted at stable"

* tag 'spi-fix-v4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: pxa2xx: Do not detect number of enabled chip selects on Intel SPT
  spi: spi-ti-qspi: Handle truncated frames properly
  spi: spi-ti-qspi: Fix FLEN and WLEN settings if bits_per_word is overridden
  spi: omap2-mcspi: Undo broken fix for dma transfer of vmalloced buffer
  spi: spi-fsl-dspi: Fix cs_change handling in message transfer