Commit Graph

668208 Commits

Author SHA1 Message Date
Jacob Keller
6322e63c35 i40e: properly spell I40E_VF_STATE_* flags
These flags represent the state of the VF at various times. Do not
spell them as _STAT_ which can be confusing to readers who may think
these refer to statistics.

Change-ID: I6bc092cd472e8276896a1fd7498aced2084312df
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-30 03:58:53 -07:00
Dean Jenkins
2d6f1da168 Bluetooth: hci_ldisc: Add protocol check to hci_uart_tx_wakeup()
Before attempting to schedule a work-item onto hu->write_work in
hci_uart_tx_wakeup(), check that the Data Link protocol layer is
still bound to the HCI UART driver.

Failure to perform this protocol check causes a race condition between
the work queue hu->write_work running hci_uart_write_work() and the
Data Link protocol layer being unbound (closed) in hci_uart_tty_close().

Note hci_uart_tty_close() does have a "cancel_work_sync(&hu->write_work)"
but it is ineffective because it cannot prevent work-items being added
to hu->write_work after cancel_work_sync() has run.

Therefore, add a check for HCI_UART_PROTO_READY into hci_uart_tx_wakeup()
which prevents scheduling of the work queue when HCI_UART_PROTO_READY
is in the clear state. However, note a small race condition remains
because the hci_uart_tx_wakeup() thread can run in parallel with the
hci_uart_tty_close() thread so it is possible that a schedule of
hu->write_work can occur when HCI_UART_PROTO_READY is cleared. A complete
solution needs locking of the threads which is implemented in a future
commit.

Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-04-30 12:22:14 +02:00
Dean Jenkins
048e1bd3a2 Bluetooth: hci_ldisc: Add protocol check to hci_uart_dequeue()
Before attempting to dequeue a Data Link protocol encapsulated message,
check that the Data Link protocol is still bound to the HCI UART driver.
This makes the code consistent with the usage of the other proto
function pointers.

Therefore, add a check for HCI_UART_PROTO_READY into hci_uart_dequeue()
and return NULL if the Data Link protocol is not bound.

This is needed for robustness as there is a scheduling race condition.
hci_uart_write_work() is scheduled to run via work queue hu->write_work
from hci_uart_tx_wakeup(). Therefore, there is a delay between
scheduling hci_uart_write_work() to run and hci_uart_dequeue() running
whereby the Data Link protocol layer could become unbound during the
scheduling delay. In this case, without the check, the call to the
unbound Data Link protocol layer dequeue function can crash.

It is noted that hci_uart_tty_close() has a
"cancel_work_sync(&hu->write_work)" statement but this only reduces
the window of the race condition because it is possible for a new
work-item to be added to work queue hu->write_work after the call to
cancel_work_sync(). For example, Data Link layer retransmissions can
be added to the work queue after the cancel_work_sync() has finished.

Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-04-30 12:22:14 +02:00
Dean Jenkins
ab00f89fdf Bluetooth: hci_ldisc: Add protocol check to hci_uart_send_frame()
Before attempting to send a HCI message, check that the Data Link
protocol is still bound to the HCI UART driver. This makes the code
consistent with the usage of the other proto function pointers.

Therefore, add a check for HCI_UART_PROTO_READY into hci_uart_send_frame()
and return -EUNATCH if the Data Link protocol is not bound.

This also allows hci_send_frame() to report the error of an unbound
Data Link protocol layer. Therefore, it assists with diagnostics into
why HCI messages are being sent when the Data Link protocol is not
bound and avoids potential crashes.

Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-04-30 12:22:14 +02:00
Frédéric Danis
377a6eac58 Bluetooth: Add module license for HCI UART Nokia H4+
Fix the following error preventing to load Nokia H4+ module:
  kernel: [  826.461619] hci_nokia: module license 'unspecified' taints kernel.
  kernel: [  826.461629] Disabling lock debugging due to kernel taint
  kernel: [  826.461836] hci_nokia: Unknown symbol gpiod_get_value_cansleep (err 0)
  kernel: [  826.461876] hci_nokia: Unknown symbol devm_kmalloc (err 0)
  kernel: [  826.461908] hci_nokia: Unknown symbol gpiod_set_value (err 0)
  kernel: [  826.461937] hci_nokia: Unknown symbol serdev_device_set_baudrate (err 0)
  kernel: [  826.461994] hci_nokia: Unknown symbol gpiod_set_value_cansleep (err 0)
  kernel: [  826.462021] hci_nokia: Unknown symbol hci_uart_tx_wakeup (err 0)
  kernel: [  826.462043] hci_nokia: Unknown symbol serdev_device_set_flow_control (err 0)
  kernel: [  826.462064] hci_nokia: Unknown symbol gpiod_to_irq (err 0)
  kernel: [  826.462085] hci_nokia: Unknown symbol serdev_device_open (err 0)
  kernel: [  826.462106] hci_nokia: Unknown symbol gpiod_get_value (err 0)
  kernel: [  826.462150] hci_nokia: Unknown symbol clk_prepare (err 0)
  kernel: [  826.462182] hci_nokia: Unknown symbol pm_runtime_enable (err 0)
  kernel: [  826.462204] hci_nokia: Unknown symbol h4_recv_buf (err 0)
  kernel: [  826.462246] hci_nokia: Unknown symbol serdev_device_write_flush (err 0)
  kernel: [  826.462268] hci_nokia: Unknown symbol serdev_device_get_tiocm (err 0)
  kernel: [  826.462298] hci_nokia: Unknown symbol driver_unregister (err 0)
  kernel: [  826.462318] hci_nokia: Unknown symbol serdev_device_wait_until_sent (err 0)
  kernel: [  826.462347] hci_nokia: Unknown symbol __serdev_device_driver_register (err 0)
  kernel: [  826.462384] hci_nokia: Unknown symbol serdev_device_set_tiocm (err 0)
  kernel: [  826.462417] hci_nokia: Unknown symbol clk_get_rate (err 0)
  kernel: [  826.462454] hci_nokia: Unknown symbol __pm_runtime_resume (err 0)
  kernel: [  826.462486] hci_nokia: Unknown symbol serdev_device_close (err 0)
  kernel: [  826.462524] hci_nokia: Unknown symbol cancel_work_sync (err 0)
  kernel: [  826.462546] hci_nokia: Unknown symbol btbcm_set_bdaddr (err 0)
  kernel: [  826.462567] hci_nokia: Unknown symbol clk_disable (err 0)
  kernel: [  826.462610] hci_nokia: Unknown symbol __pm_runtime_disable (err 0)
  kernel: [  826.462632] hci_nokia: Unknown symbol hci_uart_register_device (err 0)
  kernel: [  826.462653] hci_nokia: Unknown symbol clk_enable (err 0)
  kernel: [  826.462675] hci_nokia: Unknown symbol __pm_runtime_idle (err 0)
  kernel: [  826.462700] hci_nokia: Unknown symbol clk_unprepare (err 0)

Signed-off-by: Frédéric Danis <frederic.danis.oss@gmail.com>
Acked-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-04-30 12:22:14 +02:00
Szymon Janc
ab89f0bdd6 Bluetooth: Fix user channel for 32bit userspace on 64bit kernel
Running 32bit userspace on 64bit kernel results in MSG_CMSG_COMPAT being
defined as 0x80000000. This results in sendmsg failure if used from 32bit
userspace running on 64bit kernel. Fix this by accounting for MSG_CMSG_COMPAT
in flags check in hci_sock_sendmsg.

Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
Signed-off-by: Marko Kiiskila <marko@runtime.io>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org
2017-04-30 12:22:14 +02:00
Salvatore Benedetto
763d9a302a Bluetooth: allocate data for kpp on heap
Bluetooth would crash when computing ECDH keys with kpp
if VMAP_STACK is enabled. Fix by allocating data passed
to kpp on heap.

Fixes: 58771c1c ("Bluetooth: convert smp and selftest to crypto kpp
API")
Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2017-04-30 12:22:05 +02:00
Wei Yongjun
216646e4d8 irqchip/mbigen: Fix return value check in mbigen_device_probe()
In case of error, the function devm_ioremap() returns NULL pointer
not ERR_PTR(). Use devm_ioremap_resource() instead of devm_ioremap()
to fix the IS_ERR() test issue.

Fixes: 76e1f77f9c ("irqchip/mbigen: Introduce mbigen_of_create_domain()")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/20170427152113.31147-1-weiyj.lk@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-04-30 11:21:16 +02:00
David S. Miller
c08bac03d2 Merge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:

====================
10GbE Intel Wired LAN Driver Updates 2017-04-29

This series contains updates to ixgbe and ixgbevf only, most notable is
the addition of XDP support to our 10GbE drivers.

Paul fixes ixgbe to acquire the PHY semaphore before accessing PHY
registers when issuing a device reset.

John adds XDP support (yeah!) for ixgbe.

Emil fixes an issue by flushing the MACVLAN filters on VF reset to avoid
conflicts with other VFs that may end up using the same MAC address.  Also
fixed a bug where ethtool -S displayed some empty fields for ixgbevf
because it was using ixgbe_stats instead ixgbevf_stats for
IXGBEVF_QUEUE_STATS_LEN.

Tony adds the ability to specify a zero MAC address in order to clear the
VF's MAC address from the RAR table.  Also adds support for a new
1000Base-T device based on x550EM_X MAC type.  Fixed an issue where the
RSS key specified by the user would be over-written with a pre-existing
value, so change the rss_key to a pointer so we can check to see if the
key has a value set before attempting to set it.  Fixed the logic for
mailbox support for getting RETA and RSS values, which are only supported
by 82599 and x540 devices.

v2: fixed up patches #2 and #3 based on feedback from Jakub and to
    address build issues when page sizes are larger than 4k
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-29 23:16:20 -04:00
Tony Nguyen
e60ae00361 ixgbevf: Check for RSS key before setting value
The RSS key is being repopulated every time the interface is brought up
regardless of whether there is an existing value. If the user sets the RSS
key and the interface is brought up (e.g. reset), the user specified RSS
key will be overwritten.

This patch changes the rss_key to a pointer so we can check to see if the
key has been populated and preserve it accordingly.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 20:01:04 -07:00
Tony Nguyen
82fb670c5f ixgbevf: Fix errors in retrieving RETA and RSS from PF
Mailbox support for getting RETA and RSS is available for only 82599 and
x540; a previous patch reversed the logic and these adapters were
returning not supported.

Also, the NACK check in ixgbevf_get_rss_key_locked() was checking for the
command IXGBE_VF_GET_RETA instead of IXGBE_VF_GET_RSS_KEY.

This patch corrects both issues by correcting the logic and checking for
the right command.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 20:01:04 -07:00
Tony Nguyen
3dfbfc7ebb ixgbe: Check for RSS key before setting value
The RSS key is being repopulated every time the interface is brought up
regardless of whether there is an existing value. If the user sets the RSS
key and the interface is brought up (e.g. reset), the user specified RSS
key will be overwritten.

This patch changes the rss_key to a pointer so we can check to see if the
key has been populated and preserve it accordingly.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 20:01:04 -07:00
Paul Greenwalt
8dc963e1cd ixgbe: Add 1000Base-T device based on X550EM_X MAC
Add support for new 1000Base-T device based on X550EM_X MAC
type. All PHY operations are disabled as the PHY is controlled
by FW.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 20:01:03 -07:00
Tony Nguyen
27bdc44cdb ixgbe: Allow setting zero MAC address for VF
Currently, there is no logic that allows a VF's MAC address to be removed
from the RAR table.

Allow the user to specify a zero MAC address in order to clear the VF's
MAC address from the RAR table.  This functionality is also utilized by
libvirt when removing VFs.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 20:01:03 -07:00
Emil Tantilov
f87fc44770 ixgbevf: fix size of queue stats length
IXGBEVF_QUEUE_STATS_LEN is based on ixgebvf_stats, not ixgbe_stats.

This change fixes a bug where ethtool -S displayed some empty fields.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 20:01:03 -07:00
Emil Tantilov
e251ecf752 ixgbe: clean macvlan MAC filter table on VF reset
Flush the macvlan filters on VF reset to avoid conflict with other VFs that
may end up using the same MAC address.

The main change here is the call to ixgbe_set_vf_macvlan() with index 0.

Moved ixgbe_set_vf_macvlan() in front of ixgbe_vf_reset_event() to avoid
adding a prototype.

Reported-by: Sritej Kanakadandi Sritej Rama <skanakad@cisco.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 20:01:03 -07:00
John Fastabend
7379f97a4f ixgbe: delay tail write to every 'n' packets
Current XDP implementation hits the tail on every XDP_TX return
code. This patch changes driver behavior to only hit the tail after
packet processing is complete.

With this patch I can run XDP drop programs @ 14+Mpps and XDP_TX
programs are at ~13.5Mpps.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 20:01:02 -07:00
John Fastabend
33fdc82f08 ixgbe: add support for XDP_TX action
A couple design choices were made here. First I use a new ring
pointer structure xdp_ring[] in the adapter struct instead of
pushing the newly allocated XDP TX rings into the tx_ring[]
structure. This means we have to duplicate loops around rings
in places we want to initialize both TX rings and XDP rings.
But by making it explicit it is obvious when we are using XDP
rings and when we are using TX rings. Further we don't have
to do ring arithmatic which is error prone. As a proof point
for doing this my first patches used only a single ring structure
and introduced bugs in FCoE code and macvlan code paths.

Second I am aware this is not the most optimized version of
this code possible. I want to get baseline support in using
the most readable format possible and then once this series
is included I will optimize the TX path in another series
of patches.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 19:58:07 -07:00
John Fastabend
9247080816 ixgbe: add XDP support for pass and drop actions
Basic XDP drop support for ixgbe. Uses READ_ONCE/xchg semantics on XDP
programs instead of RCU primitives as suggested by Daniel Borkmann and
Alex Duyck.

v2: fix the build issues seen w/ XDP when page sizes are larger than 4K
    and made minor fixes based on feedback from Jakub Kicinski

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-29 19:55:08 -07:00
Linus Torvalds
8c9a694dc0 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull iov iter fix from Al Viro.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix a braino in ITER_PIPE iov_iter_revert()
2017-04-29 14:00:42 -07:00
Al Viro
4fa55cefee fix a braino in ITER_PIPE iov_iter_revert()
Fixes: 27c0e3748e
Tested-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-04-29 16:42:30 -04:00
Wei Yongjun
929562b144 crypto: stm32 - Fix OF module alias information
The module alias information passed to MODULE_DEVICE_TABLE()
should use stm32_dt_ids instead of undefined sti_dt_ids.

Fixes: b51dbe9091 ("crypto: stm32 - Support for STM32 CRC32 crypto module")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-04-30 01:45:21 +08:00
Paul Greenwalt
6133406be1 ixgbe: Acquire PHY semaphore before device reset
A recent firmware change fixed an issue to acquire the PHY semaphore before
accessing PHY registers. This led to a case where  SW can issue a device
reset clearing the MDIO registers. This patch makes SW acquire the PHY
semaphore before issuing a device reset.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-28 19:02:31 -07:00
Linus Torvalds
0060e79a1f One odd config build fix for a recent Allwinner clock driver change that
got merged. The common code called code in another file that wasn't always
 built. This just forces it on so people don't run into this bad configuration.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fix from Stephen Boyd:
 "One odd config build fix for a recent Allwinner clock driver change
  that got merged. The common code called code in another file that
  wasn't always built. This just forces it on so people don't run into
  this bad configuration"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: sunxi-ng: always select CCU_GATE
2017-04-28 17:04:31 -07:00
Christoph Hellwig
63ccc19164 libata: remove SCT WRITE SAME support
This was already disabled a while ago because it caused I/O errors,
and it's severly getting into the way of the discard / write zeroes
rework.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2017-04-28 18:09:59 -04:00
Christoph Hellwig
c6ade20f5e libata: reject passthrough WRITE SAME requests
The WRITE SAME to TRIM translation rewrites the DATA OUT buffer.  While
the SCSI code accomodates for this by passing a read-writable buffer
userspace applications don't cater for this behavior.  In fact it can
be used to rewrite e.g. a readonly file through mmap and should be
considered as a security fix.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2017-04-28 18:08:21 -04:00
Zefan Li
9732adc5d6 cgroup: avoid attaching a cgroup root to two different superblocks, take 2
Commit bfb0b80db5 ("cgroup: avoid attaching a cgroup root to two
different superblocks") is broken.  Now we try to fix the race by
delaying the initialization of cgroup root refcnt until a superblock
has been allocated.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: Andrei Vagin <avagin@virtuozzo.com>
Tested-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2017-04-28 18:04:54 -04:00
Rafael J. Wysocki
52e70c8af7 Merge branches 'acpi-power', 'acpi-blacklist', 'acpi-video' and 'acpi-doc'
* acpi-power:
  power: supply: axp288_charger: Only wait for INT3496 device if present
  ACPI / AC: Add a blacklist with PMIC ACPI HIDs with a native charger driver
  ACPI / battery: Add a blacklist with PMIC ACPI HIDs with a native battery driver
  ACPI / battery: Fix acpi_battery_exit on acpi_battery_init_async errors
  ACPI / utils: Add new acpi_dev_present helper

* acpi-blacklist:
  ACPI / blacklist: add _REV quirk for Dell Inspiron 7537

* acpi-video:
  ACPI / video: add comments about subtle cases
  ACPI / video: get rid of magic numbers and use enum instead

* acpi-doc:
  ACPI / doc: linuxized-acpica.txt: fix typos
2017-04-28 23:18:22 +02:00
Rafael J. Wysocki
168f4a6950 Merge branches 'acpi-processor', 'acpi-cppc' and 'acpi-pmic'
* acpi-processor:
  ACPI / Processor: Drop setup_max_cpus check from acpi_processor_add()

* acpi-cppc:
  ACPI / CPPC: add sysfs entries for CPPC perf capabilities
  ACPI / CPPC: Read lowest nonlinear perf in cppc_get_perf_caps()

* acpi-pmic:
  ACPI / PMIC: Stop xpower OPRegion handler relying on IIO
  ACPI / PMIC: Add opregion driver for Intel CHT Whiskey Cove PMIC
2017-04-28 23:17:55 +02:00
Rafael J. Wysocki
131b3a8db2 Merge branches 'acpi-scan', 'acpi-tables' and 'acpi-platform'
* acpi-scan:
  ACPI / scan: Avoid enumerating devices more than once
  ACPI / scan: Apply default enumeration to devices with ACPI drivers
  ACPI / scan: Drop support for force_remove

* acpi-tables:
  ACPI / tables: Drop acpi_parse_entries() which is not used

* acpi-platform:
  ACPI / platform: Update platform device NUMA node based on _PXM method
2017-04-28 23:17:36 +02:00
Rafael J. Wysocki
a1d2fcfd80 Merge branch 'pm-tools'
* pm-tools:
  tools: power: pm-graph: Package makefile and man pages
  tools: power: pm-graph: AnalyzeBoot v2.0
  tools: power: pm-graph: AnalyzeSuspend v4.6
  tools/power/x86/intel_pstate_tracer: Adjust directory ownership
2017-04-28 23:15:52 +02:00
Rafael J. Wysocki
060d0fbb43 Merge branches 'pm-cpuidle', 'pm-core', 'pm-domains', 'pm-avs' and 'pm-devfreq'
* pm-cpuidle:
  cpuidle: powernv: Avoid a branch in the core snooze_loop() loop
  cpuidle: powernv: Don't continually set thread priority in snooze_loop()
  cpuidle: powernv: Don't bounce between low and very low thread priority
  cpuidle: cpuidle-cps: remove unused variable
  powernv-cpuidle: Validate DT property array size

* pm-core:
  PM / runtime: Document autosuspend-helper side effects
  PM / runtime: Fix autosuspend documentation

* pm-domains:
  PM / Domains: Ignore domain-idle-states that are not compatible
  PM / Domains: Don't warn about IRQ safe device for an always on PM domain
  PM / Domains: Respect errors from genpd's ->power_off() callback
  PM / Domains: Enable users of genpd to specify always on PM domains
  PM / Domains: Clean up code validating genpd's status
  PM / Domain: remove conditional from error case

* pm-avs:
  PM / AVS: rockchip-io: add io selectors and supplies for rk3328

* pm-devfreq:
  PM / devfreq: Move struct devfreq_governor to devfreq directory
2017-04-28 23:15:34 +02:00
Rafael J. Wysocki
0807ee0f52 Merge branch 'pm-cpufreq'
* pm-cpufreq: (37 commits)
  cpufreq: Add Tegra186 cpufreq driver
  cpufreq: imx6q: Fix error handling code
  cpufreq: imx6q: Set max suspend_freq to avoid changes during suspend
  cpufreq: imx6q: Fix handling EPROBE_DEFER from regulator
  cpufreq: schedutil: Use policy-dependent transition delays
  cpufreq: schedutil: Reduce frequencies slower
  cpufreq: intel_pstate: Add support for Gemini Lake
  cpufreq: intel_pstate: Eliminate intel_pstate_get_min_max()
  cpufreq: intel_pstate: Do not walk policy->cpus
  cpufreq: intel_pstate: Introduce pid_in_use()
  cpufreq: intel_pstate: Drop struct cpu_defaults
  cpufreq: intel_pstate: Move cpu_defaults definitions
  cpufreq: intel_pstate: Add update_util callback to pstate_funcs
  cpufreq: intel_pstate: Use different utilization update callbacks
  cpufreq: intel_pstate: Modify check in intel_pstate_update_status()
  cpufreq: intel_pstate: Drop driver_registered variable
  cpufreq: intel_pstate: Skip unnecessary PID resets on init
  cpufreq: intel_pstate: Set HWP sampling interval once
  cpufreq: intel_pstate: Clean up intel_pstate_busy_pid_reset()
  cpufreq: intel_pstate: Fold intel_pstate_reset_all_pid() into the caller
  ...
2017-04-28 23:14:00 +02:00
Rafael J. Wysocki
2addac72af Merge schedutil governor updates for v4.12. 2017-04-28 23:13:33 +02:00
Linus Torvalds
0e9117882d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "Just a couple more stragglers, I really hope this is it.

  1) Don't let frags slip down into the GRO segmentation handlers, from
     Steffen Klassert.

  2) Truesize under-estimation triggers warnings in TCP over loopback
     with socket filters, 2 part fix from Eric Dumazet.

  3) Fix undesirable reset of bonding MTU to ETH_HLEN on slave removal,
     from Paolo Abeni.

  4) If we flush the XFRM policy after garbage collection, it doesn't
     work because stray entries can be created afterwards. Fix from Xin
     Long.

  5) Hung socket connection fixes in TIPC from Parthasarathy Bhuvaragan.

  6) Fix GRO regression with IPSEC when netfilter is disabled, from
     Sabrina Dubroca.

  7) Fix cpsw driver Kconfig dependency regression, from Arnd Bergmann"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  net: hso: register netdev later to avoid a race condition
  net: adjust skb->truesize in ___pskb_trim()
  tcp: do not underestimate skb->truesize in tcp_trim_head()
  bonding: avoid defaulting hard_header_len to ETH_HLEN on slave removal
  ipv4: Don't pass IP fragments to upper layer GRO handlers.
  cpsw/netcp: refine cpts dependency
  tipc: close the connection if protocol messages contain errors
  tipc: improve error validations for sockets in CONNECTING state
  tipc: Fix missing connection request handling
  xfrm: fix GRO for !CONFIG_NETFILTER
  xfrm: do the garbage collection after flushing policy
2017-04-28 14:13:16 -07:00
Rafael J. Wysocki
2dee4b0e0b Merge intel_pstate driver updates for v4.12. 2017-04-28 23:13:04 +02:00
Andreas Kemnade
4c761daf8b net: hso: register netdev later to avoid a race condition
If the netdev is accessed before the urbs are initialized,
there will be NULL pointer dereferences. That is avoided by
registering it when it is fully initialized.

This case occurs e.g. if dhcpcd is running in the background
and the device is probed, either after insmod hso or
when the device appears on the usb bus.

A backtrace is the following:

[ 1357.356048] usb 1-2: new high-speed USB device number 12 using ehci-omap
[ 1357.551177] usb 1-2: New USB device found, idVendor=0af0, idProduct=8800
[ 1357.558654] usb 1-2: New USB device strings: Mfr=3, Product=2, SerialNumber=0
[ 1357.568572] usb 1-2: Product: Globetrotter HSUPA Modem
[ 1357.574096] usb 1-2: Manufacturer: Option N.V.
[ 1357.685882] hso 1-2:1.5: Not our interface
[ 1460.886352] hso: unloaded
[ 1460.889984] usbcore: deregistering interface driver hso
[ 1513.769134] hso: ../drivers/net/usb/hso.c: Option Wireless
[ 1513.846771] Unable to handle kernel NULL pointer dereference at virtual address 00000030
[ 1513.887664] hso 1-2:1.5: Not our interface
[ 1513.906890] usbcore: registered new interface driver hso
[ 1513.937988] pgd = ecdec000
[ 1513.949890] [00000030] *pgd=acd15831, *pte=00000000, *ppte=00000000
[ 1513.956573] Internal error: Oops: 817 [#1] PREEMPT SMP ARM
[ 1513.962371] Modules linked in: hso usb_f_ecm omap2430 bnep bluetooth g_ether usb_f_rndis u_ether libcomposite configfs ipv6 arc4 wl18xx wlcore mac80211 cfg80211 bq27xxx_battery panel_tpo_td028ttec1 omapdrm drm_kms_helper cfbfillrect snd_soc_simple_card syscopyarea cfbimgblt snd_soc_simple_card_utils sysfillrect sysimgblt fb_sys_fops snd_soc_omap_twl4030 cfbcopyarea encoder_opa362 drm twl4030_madc_hwmon wwan_on_off snd_soc_gtm601 pwm_omap_dmtimer generic_adc_battery connector_analog_tv pwm_bl extcon_gpio omap3_isp wlcore_sdio videobuf2_dma_contig videobuf2_memops w1_bq27000 videobuf2_v4l2 videobuf2_core omap_hdq snd_soc_omap_mcbsp ov9650 snd_soc_omap bmp280_i2c bmg160_i2c v4l2_common snd_pcm_dmaengine bmp280 bmg160_core at24 bmc150_magn_i2c nvmem_core videodev phy_twl4030_usb bmc150_accel_i2c tsc2007
[ 1514.037384]  bmc150_magn bmc150_accel_core media leds_tca6507 bno055 industrialio_triggered_buffer kfifo_buf gpio_twl4030 musb_hdrc snd_soc_twl4030 twl4030_vibra twl4030_madc twl4030_pwrbutton twl4030_charger industrialio w2sg0004 ehci_omap omapdss [last unloaded: hso]
[ 1514.062622] CPU: 0 PID: 3433 Comm: dhcpcd Tainted: G        W       4.11.0-rc8-letux+ #1
[ 1514.071136] Hardware name: Generic OMAP36xx (Flattened Device Tree)
[ 1514.077758] task: ee748240 task.stack: ecdd6000
[ 1514.082580] PC is at hso_start_net_device+0x50/0xc0 [hso]
[ 1514.088287] LR is at hso_net_open+0x68/0x84 [hso]
[ 1514.093231] pc : [<bf79c304>]    lr : [<bf79ced8>]    psr: a00f0013
sp : ecdd7e20  ip : 00000000  fp : ffffffff
[ 1514.105316] r10: 00000000  r9 : ed0e080c  r8 : ecd8fe2c
[ 1514.110839] r7 : bf79cef4  r6 : ecd8fe00  r5 : 00000000  r4 : ed0dbd80
[ 1514.117706] r3 : 00000000  r2 : c0020c80  r1 : 00000000  r0 : ecdb7800
[ 1514.124572] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[ 1514.132110] Control: 10c5387d  Table: acdec019  DAC: 00000051
[ 1514.138153] Process dhcpcd (pid: 3433, stack limit = 0xecdd6218)
[ 1514.144470] Stack: (0xecdd7e20 to 0xecdd8000)
[ 1514.149078] 7e20: ed0dbd80 ecd8fe98 00000001 00000000 ecd8f800 ecd8fe00 ecd8fe60 00000000
[ 1514.157714] 7e40: ed0e080c bf79ced8 bf79ce70 ecd8f800 00000001 bf7a0258 ecd8f830 c068d958
[ 1514.166320] 7e60: c068d8b8 ecd8f800 00000001 00001091 00001090 c068dba4 ecd8f800 00001090
[ 1514.174926] 7e80: ecd8f940 ecd8f800 00000000 c068dc60 00000000 00000001 ed0e0800 ecd8f800
[ 1514.183563] 7ea0: 00000000 c06feaa8 c0ca39c2 beea57dc 00000020 00000000 306f7368 00000000
[ 1514.192169] 7ec0: 00000000 00000000 00001091 00000000 00000000 00000000 00000000 00008914
[ 1514.200805] 7ee0: eaa9ab60 beea57dc c0c9bfc0 eaa9ab40 00000006 00000000 00046858 c066a948
[ 1514.209411] 7f00: beea57dc eaa9ab60 ecc6b0c0 c02837b0 00000006 c0282c90 0000c000 c0283654
[ 1514.218017] 7f20: c09b0c00 c098bc31 00000001 c0c5e513 c0c5e513 00000000 c0151354 c01a20c0
[ 1514.226654] 7f40: c0c5e513 c01a3134 ecdd6000 c01a3160 ee7487f0 600f0013 00000000 ee748240
[ 1514.235260] 7f60: ee748734 00000000 ecc6b0c0 ecc6b0c0 beea57dc 00008914 00000006 00000000
[ 1514.243896] 7f80: 00046858 c02837b0 00001091 0003a1f0 00046608 0003a248 00000036 c01071e4
[ 1514.252502] 7fa0: ecdd6000 c0107040 0003a1f0 00046608 00000006 00008914 beea57dc 00001091
[ 1514.261108] 7fc0: 0003a1f0 00046608 0003a248 00000036 0003ac0c 00046608 00046610 00046858
[ 1514.269744] 7fe0: 0003a0ac beea57d4 000167eb b6f23106 400f0030 00000006 00000000 00000000
[ 1514.278411] [<bf79c304>] (hso_start_net_device [hso]) from [<bf79ced8>] (hso_net_open+0x68/0x84 [hso])
[ 1514.288238] [<bf79ced8>] (hso_net_open [hso]) from [<c068d958>] (__dev_open+0xa0/0xf4)
[ 1514.296600] [<c068d958>] (__dev_open) from [<c068dba4>] (__dev_change_flags+0x8c/0x130)
[ 1514.305023] [<c068dba4>] (__dev_change_flags) from [<c068dc60>] (dev_change_flags+0x18/0x48)
[ 1514.313934] [<c068dc60>] (dev_change_flags) from [<c06feaa8>] (devinet_ioctl+0x348/0x714)
[ 1514.322540] [<c06feaa8>] (devinet_ioctl) from [<c066a948>] (sock_ioctl+0x2b0/0x308)
[ 1514.330627] [<c066a948>] (sock_ioctl) from [<c0282c90>] (vfs_ioctl+0x20/0x34)
[ 1514.338165] [<c0282c90>] (vfs_ioctl) from [<c0283654>] (do_vfs_ioctl+0x82c/0x93c)
[ 1514.346038] [<c0283654>] (do_vfs_ioctl) from [<c02837b0>] (SyS_ioctl+0x4c/0x74)
[ 1514.353759] [<c02837b0>] (SyS_ioctl) from [<c0107040>] (ret_fast_syscall+0x0/0x1c)
[ 1514.361755] Code: e3822103 e3822080 e1822781 e5981014 (e5832030)
[ 1514.510833] ---[ end trace dfb3e53c657f34a0 ]---

Reported-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 16:11:48 -04:00
Eric Dumazet
c21b48cc1b net: adjust skb->truesize in ___pskb_trim()
Andrey found a way to trigger the WARN_ON_ONCE(delta < len) in
skb_try_coalesce() using syzkaller and a filter attached to a TCP
socket.

As we did recently in commit 158f323b98 ("net: adjust skb->truesize in
pskb_expand_head()") we can adjust skb->truesize from ___pskb_trim(),
via a call to skb_condense().

If all frags were freed, then skb->truesize can be recomputed.

This call can be done if skb is not yet owned, or destructor is
sock_edemux().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 16:06:47 -04:00
Eric Dumazet
7162fb242c tcp: do not underestimate skb->truesize in tcp_trim_head()
Andrey found a way to trigger the WARN_ON_ONCE(delta < len) in
skb_try_coalesce() using syzkaller and a filter attached to a TCP
socket over loopback interface.

I believe one issue with looped skbs is that tcp_trim_head() can end up
producing skb with under estimated truesize.

It hardly matters for normal conditions, since packets sent over
loopback are never truncated.

Bytes trimmed from skb->head should not change skb truesize, since
skb->head is not reallocated.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 16:05:22 -04:00
Paolo Abeni
19cdead3e2 bonding: avoid defaulting hard_header_len to ETH_HLEN on slave removal
On slave list updates, the bonding driver computes its hard_header_len
as the maximum of all enslaved devices's hard_header_len.
If the slave list is empty, e.g. on last enslaved device removal,
ETH_HLEN is used.

Since the bonding header_ops are set only when the first enslaved
device is attached, the above can lead to header_ops->create()
being called with the wrong skb headroom in place.

If bond0 is configured on top of ipoib devices, with the
following commands:

ifup bond0
for slave in $BOND_SLAVES_LIST; do
	ip link set dev $slave nomaster
done
ping -c 1 <ip on bond0 subnet>

we will obtain a skb_under_panic() with a similar call trace:
	skb_push+0x3d/0x40
	push_pseudo_header+0x17/0x30 [ib_ipoib]
	ipoib_hard_header+0x4e/0x80 [ib_ipoib]
	arp_create+0x12f/0x220
	arp_send_dst.part.19+0x28/0x50
	arp_solicit+0x115/0x290
	neigh_probe+0x4d/0x70
	__neigh_event_send+0xa7/0x230
	neigh_resolve_output+0x12e/0x1c0
	ip_finish_output2+0x14b/0x390
	ip_finish_output+0x136/0x1e0
	ip_output+0x76/0xe0
	ip_local_out+0x35/0x40
	ip_send_skb+0x19/0x40
	ip_push_pending_frames+0x33/0x40
	raw_sendmsg+0x7d3/0xb50
	inet_sendmsg+0x31/0xb0
	sock_sendmsg+0x38/0x50
	SYSC_sendto+0x102/0x190
	SyS_sendto+0xe/0x10
	do_syscall_64+0x67/0x180
	entry_SYSCALL64_slow_path+0x25/0x25

This change addresses the issue avoiding updating the bonding device
hard_header_len when the slaves list become empty, forbidding to
shrink it below the value used by header_ops->create().

The bug is there since commit 54ef313714 ("[PATCH] bonding: Handle large
hard_header_len") but the panic can be triggered only since
commit fc791b6335 ("IB/ipoib: move back IB LL address into the hard
header").

Reported-by: Norbert P <noe@physik.uzh.ch>
Fixes: 54ef313714 ("[PATCH] bonding: Handle large hard_header_len")
Fixes: fc791b6335 ("IB/ipoib: move back IB LL address into the hard header")
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 16:04:05 -04:00
Steffen Klassert
9b83e03198 ipv4: Don't pass IP fragments to upper layer GRO handlers.
Upper layer GRO handlers can not handle IP fragments, so
exit GRO processing in this case.

This fixes ESP GRO because the packet must be reassembled
before we can decapsulate, otherwise we get authentication
failures.

It also aligns IPv4 to IPv6 where packets with fragmentation
headers are not passed to upper layer GRO handlers.

Fixes: 7785bba299 ("esp: Add a software GRO codepath")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 16:00:38 -04:00
Arnd Bergmann
504926df6d cpsw/netcp: refine cpts dependency
Tony Lindgren reports a kernel oops that resulted from my compile-time
fix on the default config. This shows two problems:

a) configurations that did not already enable PTP_1588_CLOCK will
   now miss the cpts driver

b) when cpts support is disabled, the driver crashes. This is a
   preexisting problem that we did not notice before my patch.

While the second problem is still being investigated, this modifies
the dependencies again, getting us back to the original state, with
another 'select NET_PTP_CLASSIFY' added in to avoid the original
link error we got, and the 'depends on POSIX_TIMERS' to hide
the CPTS support when turning it on would be useless.

Cc: stable@vger.kernel.org # 4.11 needs this
Fixes: 07fef36234 ("cpsw/netcp: cpts depends on posix_timers")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 15:55:14 -04:00
Robert Lippert
2c1175c2e8 ipmi/watchdog: fix wdog hang on panic waiting for ipmi response
Commit c49c097610 ("ipmi: Don't call receive handler in the
panic context") means that the panic_recv_free is not called during a
panic and the atomic count does not drop to 0.

Fix this by only expecting one decrement of the atomic variable
which comes from panic_smi_free.

Signed-off-by: Robert Lippert <rlippert@google.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2017-04-28 14:53:17 -05:00
David S. Miller
4c042a80c1 Merge branch 'bpf-misc-next'
Daniel Borkmann says:

====================
Misc BPF updates

This set cleans up ldimm64 leftovers from early eBPF days and
adds couple of test cases related to this to the verifier test
suite. It also cleans up the kallsyms spinlock (had same patch
also in queue) by relaxing it through switching to _bh variant.
It fixes up test_progs in relation to htons/ntohs and adds
accessor macros for the percpu tests in test_maps.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 15:48:16 -04:00
Daniel Borkmann
f3515b5d0b bpf: provide a generic macro for percpu values for selftests
To overcome bugs as described and fixed in 89087c456f ("bpf: Fix
values type used in test_maps"), provide a generic BPF_DECLARE_PERCPU()
and bpf_percpu() accessor macro for all percpu map values used in
tests.

Declaring variables works as follows (also works for structs):

  BPF_DECLARE_PERCPU(uint32_t, my_value);

They can then be accessed normally as uint32_t type through:

  bpf_percpu(my_value, <cpu_nr>)

For example:

  bpf_percpu(my_value, 0)++;

Implicitly, we make sure that the passed type is allocated and aligned
by gcc at least on a 8-byte boundary, so that it works together with
the map lookup/update syscall for percpu maps. We use it as a usage
example in test_maps, so that others are free to adapt this into their
code when necessary.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 15:48:15 -04:00
Daniel Borkmann
43bcf707cc bpf: fix _htons occurences in test_progs
Dave reported that on sparc test_progs generates buggy swapped
eth->h_proto protocol comparisons:

  10: (15) if r3 == 0xdd86 goto pc+9
   R0=imm2,min_value=2,max_value=2 R1=pkt(id=0,off=0,r=14) R2=pkt_end R3=inv
   R4=pkt(id=0,off=14,r=14) R5=inv56 R10=fp

This is due to the unconditional ...

  #define htons __builtin_bswap16
  #define ntohs __builtin_bswap16

... in test_progs that causes this. Make use of asm/byteorder.h
and use __constant_htons() where possible and only perform the
bswap16 when on little endian in non-constant case.

Fixes: 6882804c91 ("selftests/bpf: add a test for overlapping packet range checks")
Fixes: 3782161362 ("selftests/bpf: add l4 load balancer test based on sched_cls")
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 15:48:15 -04:00
Hannes Frederic Sowa
d24f7c7fb9 bpf: bpf_lock on kallsysms doesn't need to be irqsave
Hannes rightfully spotted that the bpf_lock doesn't need to be
irqsave variant. We never perform any such updates where this
would be necessary (neither right now nor in future), therefore
relax this further.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 15:48:14 -04:00
Daniel Borkmann
728a853a44 bpf: add various test cases to verifier selftests
Add several test cases around ldimm64, fp arithmetic and direct
packet access.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 15:48:14 -04:00
Daniel Borkmann
7e56fbd27b bpf, x86_64/arm64: remove old ldimm64 artifacts from jits
For both cases, the verifier is already rejecting such invalid
formed instructions. Thus, remove these artifacts from old times
and align it with ppc64, sparc64 and s390x JITs that don't have
them in the first place.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 15:48:14 -04:00
David S. Miller
cd5487fb94 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:

====================
pull request (net-next): ipsec-next 2017-04-28

Just one patch to fix a misplaced spin_unlock_bh in an error path.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-28 15:43:24 -04:00