platform/kernel/linux-exynos.git
7 years agousb: misc: usbtest: remove redundant check on retval < 0
Colin Ian King [Sun, 12 Feb 2017 18:35:18 +0000 (18:35 +0000)]
usb: misc: usbtest: remove redundant check on retval < 0

The check for retval being less than zero is always true since
retval equal to -EPIPE at that point.  Replace the existing
conditional with just return retval.

Detected with CoverityScan, CID#114349 ("Logically dead code")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoohci-hub: fix typo in dbg_port macro
Jelle Martijn Kok [Wed, 8 Feb 2017 15:53:08 +0000 (16:53 +0100)]
ohci-hub: fix typo in dbg_port macro

The "dbg_port" macro uses the "outside" parameter (="temp") instead of
the parameters (="value") given in the macro. As the macro can look
outside its definition this causes no direct problem.

Signed-off-by: Jelle Martijn Kok <jmkok@youcom.nl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoMerge tag 'usb-serial-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Thu, 9 Feb 2017 12:57:05 +0000 (13:57 +0100)]
Merge tag 'usb-serial-4.11-rc1' of git://git./linux/kernel/git/johan/usb-serial into usb-next

Johan writes:

USB-serial updates for v4.11-rc1

These updates include

 - a new driver for Renesas uPD78F0730-based devices

 - several fixes of failures to check for short transfers, some of which could
   lead to minor information leaks, and in one case a loop-condition underflow

 - a fix of a long-standing regression in the ftdi_sio driver which resulted
   in excessive bulk-in interrupts

 - a fix for ftdi_sio line-status over-reporting which could lead to an
   endless stream of NULL-characters being forwarded to user space

 - a fix for a regression in the console driver

 - a fix for another mos7840 NULL-pointer dereference due to a missing endpoint
   sanity check

Included are also some clean ups and fixes for various minor issues, as well as
a couple of new device IDs that came in late.

All but the final patch have been in linux-next with no reported issues.

Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agousb: musb: dsps: Manage CPPI 4.1 DMA interrupt in DSPS
Alexandre Bailon [Tue, 7 Feb 2017 04:53:56 +0000 (22:53 -0600)]
usb: musb: dsps: Manage CPPI 4.1 DMA interrupt in DSPS

Despite the CPPI 4.1 is a generic DMA, it is tied to USB.
On the DSPS, CPPI 4.1 interrupt's registers are in USBSS (the MUSB glue).
Currently, to enable / disable and clear interrupts, the CPPI 4.1 driver
maps and accesses to USBSS's register, which making CPPI 4.1 driver not
really generic.
Move the interrupt management to DSPS driver.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: tusb6010: Clean up tusb_omap_dma structure
Alexandre Bailon [Tue, 7 Feb 2017 04:53:55 +0000 (22:53 -0600)]
usb: musb: tusb6010: Clean up tusb_omap_dma structure

A pointer to musb is now present in the dma_controller structure.
Remove the one present in tusb_omap_dma structure.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: cppi_dma: Clean up cppi41_dma_controller structure
Alexandre Bailon [Tue, 7 Feb 2017 04:53:54 +0000 (22:53 -0600)]
usb: musb: cppi_dma: Clean up cppi41_dma_controller structure

A pointer to musb is now present in the dma_controller structure.
Remove the one present in cppi41_dma_controller structure.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: cppi_dma: Clean up cppi structure
Alexandre Bailon [Tue, 7 Feb 2017 04:53:53 +0000 (22:53 -0600)]
usb: musb: cppi_dma: Clean up cppi structure

A pointer to musb is now present in the dma_controller structure.
Remove the one present in cppi structure.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: cppi41: Detect aborted transfers in cppi41_dma_callback()
Alexandre Bailon [Tue, 7 Feb 2017 04:53:52 +0000 (22:53 -0600)]
usb: musb: cppi41: Detect aborted transfers in cppi41_dma_callback()

Update cppi41_dma_callback() to detect an aborted transfer.
This was not required before because cppi41_dma_callback() was only
invoked on transfer completion.
In order to make CPPI 4.1 driver more generic, cppi41_dma_callback()
will be invoked after a transfer abort in order to let the MUSB driver
perform some action such as acknowledge the interrupt that may be fired
during a teardown.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: dma: Add a DMA completion platform callback
Alexandre Bailon [Tue, 7 Feb 2017 04:53:51 +0000 (22:53 -0600)]
usb: musb: dma: Add a DMA completion platform callback

Currently, the CPPI 4.1 driver is not completely generic and
only works on DSPS. This is because of IRQ management.
Add a callback to dma_controller that could be invoked on DMA completion
to acknowledge the IRQ.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agodrivers: usb: usbip: Add missing break statement to switch
Gustavo A. R. Silva [Thu, 9 Feb 2017 07:49:56 +0000 (01:49 -0600)]
drivers: usb: usbip: Add missing break statement to switch

Add missing break statement to prevent the code for case
USB_PORT_FEAT_C_RESET falling through to the default case.

Addresses-Coverity-ID: 143155
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: mtu3: remove redundant dev_err call in get_ssusb_rscs()
Wei Yongjun [Sun, 5 Feb 2017 16:25:38 +0000 (16:25 +0000)]
usb: mtu3: remove redundant dev_err call in get_ssusb_rscs()

There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoUSB: serial: mos7840: fix another NULL-deref at open
Johan Hovold [Thu, 9 Feb 2017 11:11:41 +0000 (12:11 +0100)]
USB: serial: mos7840: fix another NULL-deref at open

Fix another NULL-pointer dereference at open should a malicious device
lack an interrupt-in endpoint.

Note that the driver has a broken check for an interrupt-in endpoint
which means that an interrupt URB has never even been submitted.

Fixes: 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver")
Cc: stable <stable@vger.kernel.org> # v2.6.19: 5c75633ef751
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoUSB: serial: console: clean up sanity checks
Johan Hovold [Wed, 8 Feb 2017 17:53:09 +0000 (18:53 +0100)]
USB: serial: console: clean up sanity checks

Drop two redundant NULL checks from usb_serial_console_disconnect().

The usb_serial_console_disconnect function is called from the
USB-serial-device disconnect callback when a device is going away. Hence
there is no need to check for the serial-device pointer being NULL.

The serial-device port pointers are stored in an array that is a member
of the serial struct so the address of the first member of the array
(which the array name decays to) is never NULL either.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoUSB: serial: console: fix uninitialised spinlock
Johan Hovold [Wed, 8 Feb 2017 17:53:08 +0000 (18:53 +0100)]
USB: serial: console: fix uninitialised spinlock

Since commit 4a510969374a ("tty: Make tty_files_lock per-tty") a new
tty_struct spin lock is taken in the tty release path, but the
USB-serial-console hack was never updated hence leaving the lock of its
"fake" tty uninitialised. This was eventually detected by lockdep.

Make sure to initialise the new lock also for the fake tty to address
this regression.

Yes, this code is a mess, but cleaning it up is left for another day.

Fixes: 4a510969374a ("tty: Make tty_files_lock per-tty")
Cc: stable <stable@vger.kernel.org> # 4.6
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoUSB: serial: metro-usb: drop redundant URB reinitialisation
Johan Hovold [Wed, 8 Feb 2017 12:49:19 +0000 (13:49 +0100)]
USB: serial: metro-usb: drop redundant URB reinitialisation

No need to reinitialise the interrupt-in URB with values that have not
changed before (some) resubmissions.

This also allows the interrupt-in callback to have a single path for URB
resubmission.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoUSB: serial: metro-usb: drop function-tracing debugging
Johan Hovold [Wed, 8 Feb 2017 12:49:18 +0000 (13:49 +0100)]
USB: serial: metro-usb: drop function-tracing debugging

Drop some unnecessary debug printks.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoUSB: serial: metro-usb: drop redundant URB unlink
Johan Hovold [Wed, 8 Feb 2017 12:49:17 +0000 (13:49 +0100)]
USB: serial: metro-usb: drop redundant URB unlink

Drop redundant URB unlink as there's no need to unlink an URB which is
about to be killed synchronously.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoUSB: serial: metro-usb: drop unused interrupt-out callback
Johan Hovold [Wed, 8 Feb 2017 12:49:16 +0000 (13:49 +0100)]
USB: serial: metro-usb: drop unused interrupt-out callback

Drop the unused interrupt-out callback.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agousb: xhci-mtk: make the reference clock optional
Chunfeng Yun [Tue, 7 Feb 2017 06:13:33 +0000 (14:13 +0800)]
usb: xhci-mtk: make the reference clock optional

Make the reference clock optional for DTS backward compatibility
and ignore the error if it does not exist.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: mtu3: make the reference clock optional
Chunfeng Yun [Tue, 7 Feb 2017 06:13:32 +0000 (14:13 +0800)]
usb: mtu3: make the reference clock optional

Make the reference clock optional for DTS backward compatibility
and ignore the error if it does not exist.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoarm64: dts: mt8173: add reference clock for usb
Chunfeng Yun [Tue, 7 Feb 2017 06:13:31 +0000 (14:13 +0800)]
arm64: dts: mt8173: add reference clock for usb

Due to the reference clock comes from 26M oscillator directly
on mt8173, and it is a fixed-clock in DTS which always turned
on, we ignore it before. But on some platforms, it comes
from PLL, and need be controlled, so here add it, no matter
it is a fixed-clock or not.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agodrivers: usb-misc: sisusbvga: remove dead code
Gustavo A. R. Silva [Wed, 8 Feb 2017 04:01:35 +0000 (22:01 -0600)]
drivers: usb-misc: sisusbvga: remove dead code

The condition modex % 16 cannot be true when modex value is equal to 640
The condition du & 0xff cannot be true when du value is equal to 0x1400

Addresses-Coverity-Id: 101163
Addresses-Coverity-Id: 744373
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agodrivers: usb: early: remove unused code
Gustavo A. R. Silva [Wed, 8 Feb 2017 06:18:50 +0000 (00:18 -0600)]
drivers: usb: early: remove unused code

Remove this line of code because devnum is overwritten before it can be used.
This could happen if line of code 609 (goto try_again;) is executed. Otherwise,
devnum is never used again.

Addresses-Coverity-ID: 1226870
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoUSB: serial: sierra: fix bogus alternate-setting assumption
Johan Hovold [Mon, 6 Feb 2017 15:28:14 +0000 (16:28 +0100)]
USB: serial: sierra: fix bogus alternate-setting assumption

Interface numbers do not change when enabling alternate settings as
comment and code in this driver suggested.

Remove the confusing comment and redundant retrieval of the interface
number in probe, while simplifying and renaming the interface-number
helper.

Fixes: 4db2299da213 ("sierra: driver interface blacklisting")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoUSB: serial: ftdi_sio: fix line-status over-reporting
Johan Hovold [Thu, 2 Feb 2017 16:38:35 +0000 (17:38 +0100)]
USB: serial: ftdi_sio: fix line-status over-reporting

FTDI devices use a receive latency timer to periodically empty the
receive buffer and report modem and line status (also when the buffer is
empty).

When a break or error condition is detected the corresponding status
flags will be set on a packet with nonzero data payload and the flags
are not updated until the break is over or further characters are
received.

In order to avoid over-reporting break and error conditions, these flags
must therefore only be processed for packets with payload.

This specifically fixes the case where after an overrun, the error
condition is continuously reported and NULL-characters inserted until
further data is received.

Reported-by: Michael Walle <michael@walle.cc>
Fixes: 72fda3ca6fc1 ("USB: serial: ftd_sio: implement sysrq handling on
break")
Fixes: 166ceb690750 ("USB: ftdi_sio: clean up line-status handling")
Cc: stable <stable@vger.kernel.org> # v2.6.35
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoUSB: serial: cp210x: add new IDs for GE Bx50v3 boards
Ken Lin [Fri, 3 Feb 2017 20:00:24 +0000 (04:00 +0800)]
USB: serial: cp210x: add new IDs for GE Bx50v3 boards

Add new USB IDs for cp2104/5 devices on Bx50v3 boards due to the design
change.

Signed-off-by: Ken Lin <yungching0725@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoMerge 4.10-rc7 into usb-next
Greg Kroah-Hartman [Mon, 6 Feb 2017 08:32:06 +0000 (09:32 +0100)]
Merge 4.10-rc7 into usb-next

We want the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoLinux 4.10-rc7 v4.10-rc7
Linus Torvalds [Sun, 5 Feb 2017 23:10:58 +0000 (15:10 -0800)]
Linux 4.10-rc7

7 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 4 Feb 2017 20:18:01 +0000 (12:18 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:

 - Prevent double activation of interrupt lines, which causes problems
   on certain interrupt controllers

 - Handle the fallout of the above because x86 (ab)uses the activation
   function to reconfigure interrupts under the hood.

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/irq: Make irq activate operations symmetric
  irqdomain: Avoid activating interrupts more than once

7 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 4 Feb 2017 20:07:54 +0000 (12:07 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fix from Radim Krčmář:
 "Fix a regression that prevented migration between hosts with different
  XSAVE features even if the missing features were not used by the guest
  (for stable)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: do not save guest-unsupported XSAVE state

7 years agoMerge tag 'char-misc-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sat, 4 Feb 2017 18:44:15 +0000 (10:44 -0800)]
Merge tag 'char-misc-4.10-rc7' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are two bugfixes that resolve some reported issues. One in the
  firmware loader, that should fix the much-reported problem of crashes
  with it. The other is a hyperv fix for a reported regression.

  Both have been in linux-next for a week or so with no reported issues"

* tag 'char-misc-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
  firmware: fix NULL pointer dereference in __fw_load_abort()

7 years agoMerge tag 'staging-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sat, 4 Feb 2017 18:38:09 +0000 (10:38 -0800)]
Merge tag 'staging-4.10-rc7' of git://git./linux/kernel/git/gregkh/staging

Pull staging/IIO fixes from Greg KH:
 "Here are a few small IIO and one staging driver fix for 4.10-rc7. They
  fix some reported issues with the drivers.

  All of them have been in linux-next for a week or so with no reported
  issues"

* tag 'staging-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: greybus: timesync: validate platform state callback
  iio: dht11: Use usleep_range instead of msleep for start signal
  iio: adc: palmas_gpadc: retrieve a valid iio_dev in suspend/resume
  iio: health: max30100: fixed parenthesis around FIFO count check
  iio: health: afe4404: retrieve a valid iio_dev in suspend/resume
  iio: health: afe4403: retrieve a valid iio_dev in suspend/resume

7 years agoMerge tag 'usb-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sat, 4 Feb 2017 18:35:55 +0000 (10:35 -0800)]
Merge tag 'usb-4.10-rc7' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB fixes for some reported issues, and the usual
  number of new device ids for 4.10-rc7.

  All of these, except the last new device id, have been in linux-next
  for a while with no reported issues"

* tag 'usb-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: serial: pl2303: add ATEN device ID
  usb: gadget: f_fs: Assorted buffer overflow checks.
  USB: Add quirk for WORLDE easykey.25 MIDI keyboard
  usb: musb: Fix external abort on non-linefetch for musb_irq_work()
  usb: musb: Fix host mode error -71 regression
  USB: serial: option: add device ID for HP lt2523 (Novatel E371)
  USB: serial: qcserial: add Dell DW5570 QDL

7 years agoMerge tag 'usb-ci-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter...
Greg Kroah-Hartman [Sat, 4 Feb 2017 08:12:37 +0000 (09:12 +0100)]
Merge tag 'usb-ci-v4.11-rc1' of git://git./linux/kernel/git/peter.chen/usb into usb-next

Peter writes:

Hi Greg,

In this series, it adds qualcomm USB2 support. The review process takes
more than half of year, thanks for Stephen Boyd's great work.

Most of patches at linux-next more than ten days, and the last two small
chipidea patches at my tree about one day, no warning is reported from
autobuild robot.

Thanks.

7 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 4 Feb 2017 00:18:51 +0000 (16:18 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "A single fix this time: a fix for a virtqueue removal bug which only
  appears to affect S390, but which results in the queue hanging forever
  thus causing the machine to fail shutdown"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: virtio_scsi: Reject commands when virtqueue is broken

7 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Fri, 3 Feb 2017 23:43:30 +0000 (15:43 -0800)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio/vhost fixes from Michael S. Tsirkin:
 "Last minute fixes:

   - ARM DMA fix revert

   - vhost endian-ness fix

   - MAINTAINERS: email address change for Amit"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  MAINTAINERS: update email address for Amit Shah
  vhost: fix initialization for vq->is_le
  Revert "vring: Force use of DMA API for ARM-based systems with legacy devices"

7 years agoMerge tag 'vfio-v4.10-rc7' of git://github.com/awilliam/linux-vfio
Linus Torvalds [Fri, 3 Feb 2017 23:38:53 +0000 (15:38 -0800)]
Merge tag 'vfio-v4.10-rc7' of git://github.com/awilliam/linux-vfio

Pull VFIO fix from Alex Williamson:
 "Fix an error path in SPAPR IOMMU backend (Alexey Kardashevskiy)"

* tag 'vfio-v4.10-rc7' of git://github.com/awilliam/linux-vfio:
  vfio/spapr: Fix missing mutex unlock when creating a window

7 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Fri, 3 Feb 2017 22:50:42 +0000 (14:50 -0800)]
Merge branch 'akpm' (patches from Andrew)

Merge fixes from Andrew Morton:
 "8 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm, fs: check for fatal signals in do_generic_file_read()
  fs: break out of iomap_file_buffered_write on fatal signals
  base/memory, hotplug: fix a kernel oops in show_valid_zones()
  mm/memory_hotplug.c: check start_pfn in test_pages_in_a_zone()
  jump label: pass kbuild_cflags when checking for asm goto support
  shmem: fix sleeping from atomic context
  kasan: respect /proc/sys/kernel/traceoff_on_warning
  zswap: disable changing params if init fails

7 years agomm, fs: check for fatal signals in do_generic_file_read()
Michal Hocko [Fri, 3 Feb 2017 21:13:29 +0000 (13:13 -0800)]
mm, fs: check for fatal signals in do_generic_file_read()

do_generic_file_read() can be told to perform a large request from
userspace.  If the system is under OOM and the reading task is the OOM
victim then it has an access to memory reserves and finishing the full
request can lead to the full memory depletion which is dangerous.  Make
sure we rather go with a short read and allow the killed task to
terminate.

Link: http://lkml.kernel.org/r/20170201092706.9966-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agofs: break out of iomap_file_buffered_write on fatal signals
Michal Hocko [Fri, 3 Feb 2017 21:13:26 +0000 (13:13 -0800)]
fs: break out of iomap_file_buffered_write on fatal signals

Tetsuo has noticed that an OOM stress test which performs large write
requests can cause the full memory reserves depletion.  He has tracked
this down to the following path

__alloc_pages_nodemask+0x436/0x4d0
alloc_pages_current+0x97/0x1b0
__page_cache_alloc+0x15d/0x1a0          mm/filemap.c:728
pagecache_get_page+0x5a/0x2b0           mm/filemap.c:1331
grab_cache_page_write_begin+0x23/0x40   mm/filemap.c:2773
iomap_write_begin+0x50/0xd0             fs/iomap.c:118
iomap_write_actor+0xb5/0x1a0            fs/iomap.c:190
? iomap_write_end+0x80/0x80             fs/iomap.c:150
iomap_apply+0xb3/0x130                  fs/iomap.c:79
iomap_file_buffered_write+0x68/0xa0     fs/iomap.c:243
? iomap_write_end+0x80/0x80
xfs_file_buffered_aio_write+0x132/0x390 [xfs]
? remove_wait_queue+0x59/0x60
xfs_file_write_iter+0x90/0x130 [xfs]
__vfs_write+0xe5/0x140
vfs_write+0xc7/0x1f0
? syscall_trace_enter+0x1d0/0x380
SyS_write+0x58/0xc0
do_syscall_64+0x6c/0x200
entry_SYSCALL64_slow_path+0x25/0x25

the oom victim has access to all memory reserves to make a forward
progress to exit easier.  But iomap_file_buffered_write and other
callers of iomap_apply loop to complete the full request.  We need to
check for fatal signals and back off with a short write instead.

As the iomap_apply delegates all the work down to the actor we have to
hook into those.  All callers that work with the page cache are calling
iomap_write_begin so we will check for signals there.  dax_iomap_actor
has to handle the situation explicitly because it copies data to the
userspace directly.  Other callers like iomap_page_mkwrite work on a
single page or iomap_fiemap_actor do not allocate memory based on the
given len.

Fixes: 68a9f5e7007c ("xfs: implement iomap based buffered write path")
Link: http://lkml.kernel.org/r/20170201092706.9966-2-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org> [4.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agobase/memory, hotplug: fix a kernel oops in show_valid_zones()
Toshi Kani [Fri, 3 Feb 2017 21:13:23 +0000 (13:13 -0800)]
base/memory, hotplug: fix a kernel oops in show_valid_zones()

Reading a sysfs "memoryN/valid_zones" file leads to the following oops
when the first page of a range is not backed by struct page.
show_valid_zones() assumes that 'start_pfn' is always valid for
page_zone().

 BUG: unable to handle kernel paging request at ffffea017a000000
 IP: show_valid_zones+0x6f/0x160

This issue may happen on x86-64 systems with 64GiB or more memory since
their memory block size is bumped up to 2GiB.  [1] An example of such
systems is desribed below.  0x3240000000 is only aligned by 1GiB and
this memory block starts from 0x3200000000, which is not backed by
struct page.

 BIOS-e820: [mem 0x0000003240000000-0x000000603fffffff] usable

Since test_pages_in_a_zone() already checks holes, fix this issue by
extending this function to return 'valid_start' and 'valid_end' for a
given range.  show_valid_zones() then proceeds with the valid range.

[1] 'Commit bdee237c0343 ("x86: mm: Use 2GB memory block size on
    large-memory x86-64 systems")'

Link: http://lkml.kernel.org/r/20170127222149.30893-3-toshi.kani@hpe.com
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Zhang Zhen <zhenzhang.zhang@huawei.com>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: <stable@vger.kernel.org> [4.4+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agomm/memory_hotplug.c: check start_pfn in test_pages_in_a_zone()
Toshi Kani [Fri, 3 Feb 2017 21:13:20 +0000 (13:13 -0800)]
mm/memory_hotplug.c: check start_pfn in test_pages_in_a_zone()

Patch series "fix a kernel oops when reading sysfs valid_zones", v2.

A sysfs memory file is created for each 2GiB memory block on x86-64 when
the system has 64GiB or more memory.  [1] When the start address of a
memory block is not backed by struct page, i.e.  a memory range is not
aligned by 2GiB, reading its 'valid_zones' attribute file leads to a
kernel oops.  This issue was observed on multiple x86-64 systems with
more than 64GiB of memory.  This patch-set fixes this issue.

Patch 1 first fixes an issue in test_pages_in_a_zone(), which does not
test the start section.

Patch 2 then fixes the kernel oops by extending test_pages_in_a_zone()
to return valid [start, end).

Note for stable kernels: The memory block size change was made by commit
bdee237c0343 ("x86: mm: Use 2GB memory block size on large-memory x86-64
systems"), which was accepted to 3.9.  However, this patch-set depends
on (and fixes) the change to test_pages_in_a_zone() made by commit
5f0f2887f4de ("mm/memory_hotplug.c: check for missing sections in
test_pages_in_a_zone()"), which was accepted to 4.4.

So, I recommend that we backport it up to 4.4.

[1] 'Commit bdee237c0343 ("x86: mm: Use 2GB memory block size on
    large-memory x86-64 systems")'

This patch (of 2):

test_pages_in_a_zone() does not check 'start_pfn' when it is aligned by
section since 'sec_end_pfn' is set equal to 'pfn'.  Since this function
is called for testing the range of a sysfs memory file, 'start_pfn' is
always aligned by section.

Fix it by properly setting 'sec_end_pfn' to the next section pfn.

Also make sure that this function returns 1 only when the range belongs
to a zone.

Link: http://lkml.kernel.org/r/20170127222149.30893-2-toshi.kani@hpe.com
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Andrew Banman <abanman@sgi.com>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Greg KH <greg@kroah.com>
Cc: <stable@vger.kernel.org> [4.4+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agojump label: pass kbuild_cflags when checking for asm goto support
David Lin [Fri, 3 Feb 2017 21:13:18 +0000 (13:13 -0800)]
jump label: pass kbuild_cflags when checking for asm goto support

Some versions of ARM GCC compiler such as Android toolchain throws in a
'-fpic' flag by default.  This causes the gcc-goto check script to fail
although some config would have '-fno-pic' flag in the KBUILD_CFLAGS.

This patch passes the KBUILD_CFLAGS to the check script so that the
script does not rely on the default config from different compilers.

Link: http://lkml.kernel.org/r/20170120234329.78868-1-dtwlin@google.com
Signed-off-by: David Lin <dtwlin@google.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Michal Marek <mmarek@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoshmem: fix sleeping from atomic context
Kirill A. Shutemov [Fri, 3 Feb 2017 21:13:15 +0000 (13:13 -0800)]
shmem: fix sleeping from atomic context

Syzkaller fuzzer managed to trigger this:

    BUG: sleeping function called from invalid context at mm/shmem.c:852
    in_atomic(): 1, irqs_disabled(): 0, pid: 529, name: khugepaged
    3 locks held by khugepaged/529:
     #0:  (shrinker_rwsem){++++..}, at: [<ffffffff818d7ef1>] shrink_slab.part.59+0x121/0xd30 mm/vmscan.c:451
     #1:  (&type->s_umount_key#29){++++..}, at: [<ffffffff81a63630>] trylock_super+0x20/0x100 fs/super.c:392
     #2:  (&(&sbinfo->shrinklist_lock)->rlock){+.+.-.}, at: [<ffffffff818fd83e>] spin_lock include/linux/spinlock.h:302 [inline]
     #2:  (&(&sbinfo->shrinklist_lock)->rlock){+.+.-.}, at: [<ffffffff818fd83e>] shmem_unused_huge_shrink+0x28e/0x1490 mm/shmem.c:427
    CPU: 2 PID: 529 Comm: khugepaged Not tainted 4.10.0-rc5+ #201
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
    Call Trace:
       shmem_undo_range+0xb20/0x2710 mm/shmem.c:852
       shmem_truncate_range+0x27/0xa0 mm/shmem.c:939
       shmem_evict_inode+0x35f/0xca0 mm/shmem.c:1030
       evict+0x46e/0x980 fs/inode.c:553
       iput_final fs/inode.c:1515 [inline]
       iput+0x589/0xb20 fs/inode.c:1542
       shmem_unused_huge_shrink+0xbad/0x1490 mm/shmem.c:446
       shmem_unused_huge_scan+0x10c/0x170 mm/shmem.c:512
       super_cache_scan+0x376/0x450 fs/super.c:106
       do_shrink_slab mm/vmscan.c:378 [inline]
       shrink_slab.part.59+0x543/0xd30 mm/vmscan.c:481
       shrink_slab mm/vmscan.c:2592 [inline]
       shrink_node+0x2c7/0x870 mm/vmscan.c:2592
       shrink_zones mm/vmscan.c:2734 [inline]
       do_try_to_free_pages+0x369/0xc80 mm/vmscan.c:2776
       try_to_free_pages+0x3c6/0x900 mm/vmscan.c:2982
       __perform_reclaim mm/page_alloc.c:3301 [inline]
       __alloc_pages_direct_reclaim mm/page_alloc.c:3322 [inline]
       __alloc_pages_slowpath+0xa24/0x1c30 mm/page_alloc.c:3683
       __alloc_pages_nodemask+0x544/0xae0 mm/page_alloc.c:3848
       __alloc_pages include/linux/gfp.h:426 [inline]
       __alloc_pages_node include/linux/gfp.h:439 [inline]
       khugepaged_alloc_page+0xc2/0x1b0 mm/khugepaged.c:750
       collapse_huge_page+0x182/0x1fe0 mm/khugepaged.c:955
       khugepaged_scan_pmd+0xfdf/0x12a0 mm/khugepaged.c:1208
       khugepaged_scan_mm_slot mm/khugepaged.c:1727 [inline]
       khugepaged_do_scan mm/khugepaged.c:1808 [inline]
       khugepaged+0xe9b/0x1590 mm/khugepaged.c:1853
       kthread+0x326/0x3f0 kernel/kthread.c:227
       ret_from_fork+0x31/0x40 arch/x86/entry/entry_64.S:430

The iput() from atomic context was a bad idea: if after igrab() somebody
else calls iput() and we left with the last inode reference, our iput()
would lead to inode eviction and therefore sleeping.

This patch should fix the situation.

Link: http://lkml.kernel.org/r/20170131093141.GA15899@node.shutemov.name
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agokasan: respect /proc/sys/kernel/traceoff_on_warning
Peter Zijlstra [Fri, 3 Feb 2017 21:13:12 +0000 (13:13 -0800)]
kasan: respect /proc/sys/kernel/traceoff_on_warning

After much waiting I finally reproduced a KASAN issue, only to find my
trace-buffer empty of useful information because it got spooled out :/

Make kasan_report honour the /proc/sys/kernel/traceoff_on_warning
interface.

Link: http://lkml.kernel.org/r/20170125164106.3514-1-aryabinin@virtuozzo.com
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agozswap: disable changing params if init fails
Dan Streetman [Fri, 3 Feb 2017 21:13:09 +0000 (13:13 -0800)]
zswap: disable changing params if init fails

Add zswap_init_failed bool that prevents changing any of the module
params, if init_zswap() fails, and set zswap_enabled to false.  Change
'enabled' param to a callback, and check zswap_init_failed before
allowing any change to 'enabled', 'zpool', or 'compressor' params.

Any driver that is built-in to the kernel will not be unloaded if its
init function returns error, and its module params remain accessible for
users to change via sysfs.  Since zswap uses param callbacks, which
assume that zswap has been initialized, changing the zswap params after
a failed initialization will result in WARNING due to the param
callbacks expecting a pool to already exist.  This prevents that by
immediately exiting any of the param callbacks if initialization failed.

This was reported here:
  https://marc.info/?l=linux-mm&m=147004228125528&w=4

And fixes this WARNING:
  [  429.723476] WARNING: CPU: 0 PID: 5140 at mm/zswap.c:503 __zswap_pool_current+0x56/0x60

The warning is just noise, and not serious.  However, when init fails,
zswap frees all its percpu dstmem pages and its kmem cache.  The kmem
cache might be serious, if kmem_cache_alloc(NULL, gfp) has problems; but
the percpu dstmem pages are definitely a problem, as they're used as
temporary buffer for compressed pages before copying into place in the
zpool.

If the user does get zswap enabled after an init failure, then zswap
will likely Oops on the first page it tries to compress (or worse, start
corrupting memory).

Fixes: 90b0fc26d5db ("zswap: change zpool/compressor at runtime")
Link: http://lkml.kernel.org/r/20170124200259.16191-2-ddstreet@ieee.org
Signed-off-by: Dan Streetman <dan.streetman@canonical.com>
Reported-by: Marcin Miroslaw <marcin@mejor.pl>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge tag 'regulator-fix-v4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 3 Feb 2017 21:46:38 +0000 (13:46 -0800)]
Merge tag 'regulator-fix-v4.10-rc6' of git://git./linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "Three changes here: two run of the mill driver specific fixes and a
  change from Mark Rutland which reverts some new device specific ACPI
  binding code which was added during the merge window as there are
  concerns about this sending the wrong signal about usage of regulators
  in ACPI systems"

* tag 'regulator-fix-v4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: fixed: Revert support for ACPI interface
  regulator: axp20x: AXP806: Fix dcdcb being set instead of dcdce
  regulator: twl6030: fix range comparison, allowing vsel = 59

7 years agoMAINTAINERS: update email address for Amit Shah
Amit Shah [Fri, 3 Feb 2017 11:18:14 +0000 (16:48 +0530)]
MAINTAINERS: update email address for Amit Shah

I'm leaving my job at Red Hat, this email address will stop working next week.
Update it to one that I will have access to later.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
7 years agovhost: fix initialization for vq->is_le
Halil Pasic [Mon, 30 Jan 2017 10:09:36 +0000 (11:09 +0100)]
vhost: fix initialization for vq->is_le

Currently, under certain circumstances vhost_init_is_le does just a part
of the initialization job, and depends on vhost_reset_is_le being called
too. For this reason vhost_vq_init_access used to call vhost_reset_is_le
when vq->private_data is NULL. This is not only counter intuitive, but
also real a problem because it breaks vhost_net. The bug was introduced to
vhost_net with commit 2751c9882b94 ("vhost: cross-endian support for
legacy devices"). The symptom is corruption of the vq's used.idx field
(virtio) after VHOST_NET_SET_BACKEND was issued as a part of the vhost
shutdown on a vq with pending descriptors.

Let us make sure the outcome of vhost_init_is_le never depend on the state
it is actually supposed to initialize, and fix virtio_net by removing the
reset from vhost_vq_init_access.

With the above, there is no reason for vhost_reset_is_le to do just half
of the job. Let us make vhost_reset_is_le reinitialize is_le.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reported-by: Michael A. Tebolt <miket@us.ibm.com>
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixes: commit 2751c9882b94 ("vhost: cross-endian support for legacy devices")
Cc: <stable@vger.kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Michael A. Tebolt <miket@us.ibm.com>
7 years agoRevert "vring: Force use of DMA API for ARM-based systems with legacy devices"
Michael S. Tsirkin [Fri, 3 Feb 2017 03:43:52 +0000 (05:43 +0200)]
Revert "vring: Force use of DMA API for ARM-based systems with legacy devices"

This reverts commit c7070619f3408d9a0dffbed9149e6f00479cf43b.

This has been shown to regress on some ARM systems:

by forcing on DMA API usage for ARM systems, we have inadvertently
kicked open a hornets' nest in terms of cache-coherency. Namely that
unless the virtio device is explicitly described as capable of coherent
DMA by firmware, the DMA APIs on ARM and other DT-based platforms will
assume it is non-coherent. This turns out to cause a big problem for the
likes of QEMU and kvmtool, which generate virtio-mmio devices in their
guest DTs but neglect to add the often-overlooked "dma-coherent"
property; as a result, we end up with the guest making non-cacheable
accesses to the vring, the host doing so cacheably, both talking past
each other and things going horribly wrong.

We are working on a safer work-around.

Fixes: c7070619f340 ("vring: Force use of DMA API for ARM-based systems with legacy devices")
Reported-by: Robin Murphy <robin.murphy@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
7 years agoMerge tag 'usb-serial-4.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Fri, 3 Feb 2017 21:19:15 +0000 (22:19 +0100)]
Merge tag 'usb-serial-4.10-rc7' of git://git./linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v4.10-rc7

One more device ID for pl2303.

Signed-off-by: Johan Hovold <johan@kernel.org>
7 years agoMerge tag 'mmc-v4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 3 Feb 2017 20:01:54 +0000 (12:01 -0800)]
Merge tag 'mmc-v4.10-rc6' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fix from Ulf Hansson:
 "MMC host: sdhci: Avoid hang when receiving spurious CARD_INT
  interrupts"

* tag 'mmc-v4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci: Ignore unexpected CARD_INT interrupts

7 years agoMerge tag 'drm-fixes-for-v4.10-rc7' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 3 Feb 2017 19:32:25 +0000 (11:32 -0800)]
Merge tag 'drm-fixes-for-v4.10-rc7' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Another fixes pull for v4.10, it's a bit big due to the backport of
  the VMA fixes for i915 that should fix the oops on shutdown problems
  that you've worked around.

  There are also two drm core connector registration fixes, a bunch of
  nouveau regression fixes and two AMD fixes"

* tag 'drm-fixes-for-v4.10-rc7' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon: Fix vram_size/visible values in DRM_RADEON_GEM_INFO ioctl
  drm/amdgpu/si: fix crash on headless asics
  drm/i915: Track pinned vma in intel_plane_state
  drm/atomic: Unconditionally call prepare_fb.
  drm/atomic: Fix double free in drm_atomic_state_default_clear
  drm/nouveau/kms/nv50: request vblank events for commits that send completion events
  drm/nouveau/nv1a,nv1f/disp: fix memory clock rate retrieval
  drm/nouveau/disp/gt215: Fix HDA ELD handling (thus, HDMI audio) on gt215
  drm/nouveau/nouveau/led: prevent compiling the led-code if nouveau=y and leds=m
  drm/nouveau/disp/mcp7x: disable dptmds workaround
  drm/nouveau: prevent userspace from deleting client object
  drm/nouveau/fence/g84-: protect against concurrent access to semaphore buffers
  drm: Don't race connector registration
  drm: prevent double-(un)registration for connectors

7 years agoMerge tag 'powerpc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 3 Feb 2017 19:10:06 +0000 (11:10 -0800)]
Merge tag 'powerpc-4.10-3' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "The main change is we're reverting the initial stack protector support
  we merged this cycle. It turns out to not work on toolchains built
  with libc support, and fixing it will be need to wait for another
  release.

  And the rest are all fairly minor:

   - Some pasemi machines were not booting due to a missing error check
     in prom_find_boot_cpu()

   - In EEH we were checking a pointer rather than the bool it pointed
     to

   - The clang build was broken by a BUILD_BUG_ON() we added.

   - The radix (Power9 only) version of map_kernel_page() was broken if
     our memory size was a multiple of 2MB, which it generally isn't

  Thanks to: Darren Stevens, Gavin Shan, Reza Arbab"

* tag 'powerpc-4.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm: Use the correct pointer when setting a 2MB pte
  powerpc: Fix build failure with clang due to BUILD_BUG_ON()
  powerpc: Revert the initial stack protector support
  powerpc/eeh: Fix wrong flag passed to eeh_unfreeze_pe()
  powerpc: Add missing error check to prom_find_boot_cpu()

7 years agoMerge tag 'trace-v4.10-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rosted...
Linus Torvalds [Fri, 3 Feb 2017 19:06:59 +0000 (11:06 -0800)]
Merge tag 'trace-v4.10-rc2-2' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Simple fix of s/static struct __init/static __init struct/"

* tag 'trace-v4.10-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/kprobes: Fix __init annotation

7 years agoMerge branch 'modversions' (modversions fixes for powerpc from Ard)
Linus Torvalds [Fri, 3 Feb 2017 18:30:27 +0000 (10:30 -0800)]
Merge branch 'modversions' (modversions fixes for powerpc from Ard)

Merge kcrctab entry fixes from Ard Biesheuvel:
 "This is a followup to [0] 'modversions: redefine kcrctab entries as
  relative CRC pointers', but since relative CRC pointers do not work in
  modules, and are actually only needed by powerpc with
  CONFIG_RELOCATABLE=y, I have made it a Kconfig selectable feature
  instead.

  First it introduces the MODULE_REL_CRCS Kconfig symbol, and adds the
  kbuild handling of it, i.e., modpost, genksyms and kallsyms.

  Then it switches all architectures to 32-bit CRC entries in kcrctab,
  where all architectures except powerpc with CONFIG_RELOCATABLE=y use
  absolute ELF symbol references as before"

[0] http://marc.info/?l=linux-arch&m=148493613415294&w=2

* emailed patches from Ard Biesheuvel:
  module: unify absolute krctab definitions for 32-bit and 64-bit
  modversions: treat symbol CRCs as 32 bit quantities
  kbuild: modversions: add infrastructure for emitting relative CRCs

7 years agolog2: make order_base_2() behave correctly on const input value zero
Ard Biesheuvel [Thu, 2 Feb 2017 18:05:26 +0000 (18:05 +0000)]
log2: make order_base_2() behave correctly on const input value zero

The function order_base_2() is defined (according to the comment block)
as returning zero on input zero, but subsequently passes the input into
roundup_pow_of_two(), which is explicitly undefined for input zero.

This has gone unnoticed until now, but optimization passes in GCC 7 may
produce constant folded function instances where a constant value of
zero is passed into order_base_2(), resulting in link errors against the
deliberately undefined '____ilog2_NaN'.

So update order_base_2() to adhere to its own documented interface.

[ See

     http://marc.info/?l=linux-kernel&m=147672952517795&w=2

  and follow-up discussion for more background. The gcc "optimization
  pass" is really just broken, but now the GCC trunk problem seems to
  have escaped out of just specially built daily images, so we need to
  work around it in mainline.    - Linus ]

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoKVM: x86: do not save guest-unsupported XSAVE state
Radim Krčmář [Wed, 1 Feb 2017 13:19:53 +0000 (14:19 +0100)]
KVM: x86: do not save guest-unsupported XSAVE state

Saving unsupported state prevents migration when the new host does not
support a XSAVE feature of the original host, even if the feature is not
exposed to the guest.

We've masked host features with guest-visible features before, with
4344ee981e21 ("KVM: x86: only copy XSAVE state for the supported
features") and dropped it when implementing XSAVES.  Do it again.

Fixes: df1daba7d1cb ("KVM: x86: support XSAVES usage in the host")
Cc: stable@vger.kernel.org
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
7 years agomodule: unify absolute krctab definitions for 32-bit and 64-bit
Ard Biesheuvel [Fri, 3 Feb 2017 09:54:07 +0000 (09:54 +0000)]
module: unify absolute krctab definitions for 32-bit and 64-bit

The previous patch introduced a separate inline asm version of the
krcrctab declaration template for use with 64-bit architectures, which
cannot refer to ELF symbols using 32-bit quantities.

This declaration should be equivalent to the C one for 32-bit
architectures, but just in case - unify them in a separate patch, which
can simply be dropped if it turns out to break anything.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agomodversions: treat symbol CRCs as 32 bit quantities
Ard Biesheuvel [Fri, 3 Feb 2017 09:54:06 +0000 (09:54 +0000)]
modversions: treat symbol CRCs as 32 bit quantities

The modversion symbol CRCs are emitted as ELF symbols, which allows us
to easily populate the kcrctab sections by relying on the linker to
associate each kcrctab slot with the correct value.

This has a couple of downsides:

 - Given that the CRCs are treated as memory addresses, we waste 4 bytes
   for each CRC on 64 bit architectures,

 - On architectures that support runtime relocation, a R_<arch>_RELATIVE
   relocation entry is emitted for each CRC value, which identifies it
   as a quantity that requires fixing up based on the actual runtime
   load offset of the kernel. This results in corrupted CRCs unless we
   explicitly undo the fixup (and this is currently being handled in the
   core module code)

 - Such runtime relocation entries take up 24 bytes of __init space
   each, resulting in a x8 overhead in [uncompressed] kernel size for
   CRCs.

Switching to explicit 32 bit values on 64 bit architectures fixes most
of these issues, given that 32 bit values are not treated as quantities
that require fixing up based on the actual runtime load offset.  Note
that on some ELF64 architectures [such as PPC64], these 32-bit values
are still emitted as [absolute] runtime relocatable quantities, even if
the value resolves to a build time constant.  Since relative relocations
are always resolved at build time, this patch enables MODULE_REL_CRCS on
powerpc when CONFIG_RELOCATABLE=y, which turns the absolute CRC
references into relative references into .rodata where the actual CRC
value is stored.

So redefine all CRC fields and variables as u32, and redefine the
__CRC_SYMBOL() macro for 64 bit builds to emit the CRC reference using
inline assembler (which is necessary since 64-bit C code cannot use
32-bit types to hold memory addresses, even if they are ultimately
resolved using values that do not exceed 0xffffffff).  To avoid
potential problems with legacy 32-bit architectures using legacy
toolchains, the equivalent C definition of the kcrctab entry is retained
for 32-bit architectures.

Note that this mostly reverts commit d4703aefdbc8 ("module: handle ppc64
relocating kcrctabs when CONFIG_RELOCATABLE=y")

Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agokbuild: modversions: add infrastructure for emitting relative CRCs
Ard Biesheuvel [Fri, 3 Feb 2017 09:54:05 +0000 (09:54 +0000)]
kbuild: modversions: add infrastructure for emitting relative CRCs

This add the kbuild infrastructure that will allow architectures to emit
vmlinux symbol CRCs as 32-bit offsets to another location in the kernel
where the actual value is stored. This works around problems with CRCs
being mistaken for relocatable symbols on kernels that self relocate at
runtime (i.e., powerpc with CONFIG_RELOCATABLE=y)

For the kbuild side of things, this comes down to the following:

 - introducing a Kconfig symbol MODULE_REL_CRCS

 - adding a -R switch to genksyms to instruct it to emit the CRC symbols
   as references into the .rodata section

 - making modpost distinguish such references from absolute CRC symbols
   by the section index (SHN_ABS)

 - making kallsyms disregard non-absolute symbols with a __crc_ prefix

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge remote-tracking branches 'regulator/fix/fixed' and 'regulator/fix/twl6040'...
Mark Brown [Fri, 3 Feb 2017 11:39:46 +0000 (12:39 +0100)]
Merge remote-tracking branches 'regulator/fix/fixed' and 'regulator/fix/twl6040' into regulator-linus

7 years agousb: musb: dsps: make dsps_musb_clear_ep_rxintr() static
Wei Yongjun [Thu, 2 Feb 2017 03:30:28 +0000 (21:30 -0600)]
usb: musb: dsps: make dsps_musb_clear_ep_rxintr() static

Fixes the following sparse warning:

drivers/usb/musb/musb_dsps.c:270:6: warning:
 symbol 'dsps_musb_clear_ep_rxintr' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: sunxi: add support for the variant in H3/V3s SoC
Icenowy Zheng [Thu, 2 Feb 2017 03:30:27 +0000 (21:30 -0600)]
usb: musb: sunxi: add support for the variant in H3/V3s SoC

Allwinner H3/V3s features a variant of MUSB controller, which lacks one
endpoint.

Add support for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
[b-liu@ti.com: added usb: to commit subject prefix]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: omap2430: constify dev_pm_ops structures
Bhumika Goyal [Thu, 2 Feb 2017 03:30:26 +0000 (21:30 -0600)]
usb: musb: omap2430: constify dev_pm_ops structures

Declare dev_pm_ops structures as const as they are only stored in the pm
field of a device_driver structure. This field is of type const, so
dev_pm_ops structures having similar properties can be declared const
too.

Size details after cross compiling the .o file for arm
architecture.

File size before: drivers/usb/musb/omap2430.o
   text    data     bss     dec     hex filename
   4141     400       8    4549    11c5 usb/musb/omap2430.o

File size after: drivers/usb/musb/omap2430.o
   text    data     bss     dec     hex filename
   4333     200       8    4541    11bd usb/musb/omap2430.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
[b-liu@ti.com: added omap2430 in commit subject prefix]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: Add support for optional VBUS irq to dsps glue layer
Tony Lindgren [Thu, 2 Feb 2017 03:30:25 +0000 (21:30 -0600)]
usb: musb: Add support for optional VBUS irq to dsps glue layer

We can now configure the PMIC interrupt to provide us VBUS
events. In that case we don't need to constantly poll the
status and can make it optional. This is only wired up
for the mini-B interface on beaglebone.

Note that eventually we should get also the connect status
for the host interface when the am335x internal PM coprocessor
provides us with an IRQ chip. For now, we still need to poll
for the host mode status.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: blackfin: fix unused warnings on suspend/resume
Jérémy Lefaure [Thu, 2 Feb 2017 03:30:24 +0000 (21:30 -0600)]
usb: musb: blackfin: fix unused warnings on suspend/resume

When CONFIG_PM_SLEEP is disabled, SIMPLE_DEV_PM_OPS does not use
bfin_resume and bfin_suspend even if CONFIG_PM is enabled:

drivers/usb/musb/blackfin.c:602:12: warning: ‘bfin_resume’ defined but
not used [-Wunused-function]
 static int bfin_resume(struct device *dev)
            ^~~~~~~~~~~
drivers/usb/musb/blackfin.c:585:12: warning: ‘bfin_suspend’ defined but
not used [-Wunused-function]
 static int bfin_suspend(struct device *dev)
            ^~~~~~~~~~~~

The preprocessor condition should be on CONFIG_PM_SLEEP, not on CONFIG_PM.
However it is better to mark these functions as __maybe_unused.

Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: dsps: switch to static id for musb-hdrc platform devices
Bin Liu [Thu, 2 Feb 2017 03:30:23 +0000 (21:30 -0600)]
usb: musb: dsps: switch to static id for musb-hdrc platform devices

The dsps glue uses PLATFORM_DEVID_AUTO when creating the musb-hdrc
platform devices, this causes that the id will change in each system
depending on the order of driver probe, the order of the usb instances
defined in device-tree, or the list of enabled devices which use also
PLATFORM_DEVID_AUTO in kernel config. This id inconsistency causes
trouble in shell scripting or user guide documentation.

So switch it to static id, starting from 0 to the musb instance with
lower MMR offset. This scheme is also aligned to the naming in the SoC.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: debugfs: allow forcing host mode together with speed in testmode
Pali Rohár [Thu, 2 Feb 2017 03:30:22 +0000 (21:30 -0600)]
usb: musb: debugfs: allow forcing host mode together with speed in testmode

Based on the musb ug, force_host bit is allowed to be set along with
force_hs or force_fs bit.

It could help to implement forced host mode via testmode on Nokia N900.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: sunxi: Uses the resource-managed extcon API when registering extcon notifier
Chanwoo Choi [Thu, 2 Feb 2017 03:30:21 +0000 (21:30 -0600)]
usb: musb: sunxi: Uses the resource-managed extcon API when registering extcon notifier

This patch just uses the resource-managed extcon API when registering
the extcon notifier.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: da8xx: Fix host mode suspend
Alexandre Bailon [Thu, 2 Feb 2017 03:30:20 +0000 (21:30 -0600)]
usb: musb: da8xx: Fix host mode suspend

On da8xx, VBUS is not maintained during suspend when musb is in host mode.
On resume, all the connected devices will be disconnected and then will
be enumerated again.
This happens because MUSB_DEVCTL is cleared during suspend.

Use the quirk MUSB_PRESERVE_SESSION to preseve MUSB_DEVCTL during suspend.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: Add a quirk to preserve the session during suspend
Alexandre Bailon [Thu, 2 Feb 2017 03:30:19 +0000 (21:30 -0600)]
usb: musb: Add a quirk to preserve the session during suspend

On da8xx, VBUS is not maintained during suspend when musb is in host mode.
On resume, all the connected devices will be disconnected and then will
be enumerated again.
This happens because MUSB_DEVCTL is cleared during suspend.
Add a quirk to not clear MUSB_DEVCTL and then preserve the  session during
a suspend.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: da8xx: Add support of suspend / resume
Alexandre Bailon [Thu, 2 Feb 2017 03:30:18 +0000 (21:30 -0600)]
usb: musb: da8xx: Add support of suspend / resume

Implement PM methods specifics for da8xx glue.
The only thing to do is to power off the phy.
As the registers are in retention during suspend,
there is no need to save them.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: davinci: remove redundant code
Bin Liu [Thu, 2 Feb 2017 03:30:17 +0000 (21:30 -0600)]
usb: musb: davinci: remove redundant code

The session is cleared in the core whenever musb_platform_disable() is
called, so clearing it in the glue driver *_musb_disable() is redundant.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: am35x: remove redundant code
Bin Liu [Thu, 2 Feb 2017 03:30:16 +0000 (21:30 -0600)]
usb: musb: am35x: remove redundant code

The session is cleared in the core whenever musb_platform_disable() is
called, so clearing it in the glue driver *_musb_disable() is redundant.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: da8xx: remove redundant code
Bin Liu [Thu, 2 Feb 2017 03:30:15 +0000 (21:30 -0600)]
usb: musb: da8xx: remove redundant code

The session is cleared in the core whenever musb_platform_disable() is
called, so clearing it in the glue driver *_musb_disable() is redundant.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: dsps: remove redundant code
Bin Liu [Thu, 2 Feb 2017 03:30:14 +0000 (21:30 -0600)]
usb: musb: dsps: remove redundant code

The session is cleared in the core whenever musb_platform_disable() is
called, so clearing it in the glue driver *_musb_disable() is redundant.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: remove musb_generic_disable function
Bin Liu [Thu, 2 Feb 2017 03:30:13 +0000 (21:30 -0600)]
usb: musb: remove musb_generic_disable function

musb_generic_disable() only has two lines of code. So remove it and let
the callers directly call those two lines.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: musb: da8xx: Remove CPPI 3.0 quirk and methods
Alexandre Bailon [Thu, 2 Feb 2017 03:30:12 +0000 (21:30 -0600)]
usb: musb: da8xx: Remove CPPI 3.0 quirk and methods

DA8xx driver is registering and using the CPPI 3.0 DMA controller but
actually, the DA8xx has a CPPI 4.1 DMA controller.
Remove the CPPI 3.0 quirk and methods.

Fixes: f8e9f34f80a2 ("usb: musb: Fix up DMA related macros")
Fixes: 7f6283ed6fe8 ("usb: musb: Set up function pointers for DMA")
Cc: <stable@vger.kernel.org>
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: misc: adutux: remove redundant error check on copy_to_user return code
Colin Ian King [Thu, 2 Feb 2017 11:51:48 +0000 (11:51 +0000)]
usb: misc: adutux: remove redundant error check on copy_to_user return code

The 2nd check for a non-zero return from copy_to_user is redundant as
it is has already been made a few lines earlier.  This check was made
redundant because of previous fix to the copy_to_user error return
check.

Detected by CoverityScan, CID#114347 ("Logically Dead Code")

Fixes: 1865a9c382ede ("USB: adutux: fix misuse of return value of copy_to_user()")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agousb: chipidea: msm: Fix return value check in ci_hdrc_msm_probe()
Wei Yongjun [Wed, 25 Jan 2017 14:02:48 +0000 (14:02 +0000)]
usb: chipidea: msm: Fix return value check in ci_hdrc_msm_probe()

In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: 2fc305be364e ("usb: chipidea: msm: Mux over secondary phy at the
right time")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
7 years agousb: chipidea: Configure phy for appropriate mode
Stephen Boyd [Wed, 25 Jan 2017 22:32:43 +0000 (14:32 -0800)]
usb: chipidea: Configure phy for appropriate mode

When the qcom chipidea controller is used with an extcon, we need
to signal device mode or host mode to the phy so it can configure
itself for the correct mode. This should be done after the phy is
powered up, so that the register writes work correctly. Add in
the appropriate phy_set_mode() call here.

Cc: Peter Chen <peter.chen@nxp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
7 years agoMerge branch 'drm-fixes-4.10' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Thu, 2 Feb 2017 23:10:08 +0000 (09:10 +1000)]
Merge branch 'drm-fixes-4.10' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

two amd fixes.

* 'drm-fixes-4.10' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: Fix vram_size/visible values in DRM_RADEON_GEM_INFO ioctl
  drm/amdgpu/si: fix crash on headless asics

7 years agoMerge tag 'topic/vma-fix-for-4.10-2017-02-02' of git://anongit.freedesktop.org/git...
Dave Airlie [Thu, 2 Feb 2017 23:09:36 +0000 (09:09 +1000)]
Merge tag 'topic/vma-fix-for-4.10-2017-02-02' of git://anongit.freedesktop.org/git/drm-intel into drm-fixes

here's Maarten's backport of the vma fixes for v4.10.

* tag 'topic/vma-fix-for-4.10-2017-02-02' of git://anongit.freedesktop.org/git/drm-intel:
  drm/i915: Track pinned vma in intel_plane_state
  drm/atomic: Unconditionally call prepare_fb.

7 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 2 Feb 2017 22:08:58 +0000 (14:08 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes:

   - two microcode loader fixes

   - two FPU xstate handling fixes

   - an MCE timer handling related crash fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Make timer handling more robust
  x86/microcode: Do not access the initrd after it has been freed
  x86/fpu/xstate: Fix xcomp_bv in XSAVES header
  x86/fpu: Set the xcomp_bv when we fake up a XSAVES area
  x86/microcode/intel: Drop stashed AP patch pointer optimization

7 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 2 Feb 2017 21:30:19 +0000 (13:30 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Five kernel fixes:

   - an mmap tracing ABI fix for certain mappings

   - a use-after-free fix, found via KASAN

   - three CPU hotplug related x86 PMU driver fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/uncore: Make package handling more robust
  perf/x86/intel/uncore: Clean up hotplug conversion fallout
  perf/x86/intel/rapl: Make package handling more robust
  perf/core: Fix PERF_RECORD_MMAP2 prot/flags for anonymous memory
  perf/core: Fix use-after-free bug

7 years agoMerge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 2 Feb 2017 21:20:23 +0000 (13:20 -0800)]
Merge branch 'efi-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull EFI fixes from Ingo Molnar:
 "Two EFI boot fixes, one for arm64 and one for x86 systems with certain
  firmware versions"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/fdt: Avoid FDT manipulation after ExitBootServices()
  x86/efi: Always map the first physical page into the EFI pagetables

7 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 2 Feb 2017 20:54:45 +0000 (12:54 -0800)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull  objtool fix from Ingo Molnar:
 "A fix for a bad opcode in objtool's instruction decoder"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix IRET's opcode

7 years agoMerge tag 'nfsd-4.10-2' of git://linux-nfs.org/~bfields/linux
Linus Torvalds [Thu, 2 Feb 2017 20:49:58 +0000 (12:49 -0800)]
Merge tag 'nfsd-4.10-2' of git://linux-nfs.org/~bfields/linux

Pull nfsd fixes from Bruce Fields:
 "Three more miscellaneous nfsd bugfixes"

* tag 'nfsd-4.10-2' of git://linux-nfs.org/~bfields/linux:
  svcrpc: fix oops in absence of krb5 module
  nfsd: special case truncates some more
  NFSD: Fix a null reference case in find_or_create_lock_stateid()

7 years agoMerge tag 'xtensa-20170202' of git://github.com/jcmvbkbc/linux-xtensa
Linus Torvalds [Thu, 2 Feb 2017 20:39:10 +0000 (12:39 -0800)]
Merge tag 'xtensa-20170202' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa fix from Max Filippov:
 "A for an Xtensa build error introduced in reset code refactoring
  series in v4.9:

   - fix noMMU build on cores with MMU"

* tag 'xtensa-20170202' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: fix noMMU build on cores with MMU

7 years agoMerge tag 'pci-v4.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Thu, 2 Feb 2017 20:34:27 +0000 (12:34 -0800)]
Merge tag 'pci-v4.10-fixes-2' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fix from Bjorn Helgaas:
 "Configure ASPM on the link from a PCI-to-PCIe bridge (avoids a NULL
  pointer dereference on topologies including these bridges)"

* tag 'pci-v4.10-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies

7 years agodrm/radeon: Fix vram_size/visible values in DRM_RADEON_GEM_INFO ioctl
Michel Dänzer [Mon, 30 Jan 2017 03:06:35 +0000 (12:06 +0900)]
drm/radeon: Fix vram_size/visible values in DRM_RADEON_GEM_INFO ioctl

vram_size is supposed to be the total amount of VRAM that can be used by
userspace, which corresponds to the TTM VRAM manager size (which is
normally the full amount of VRAM, but can be just the visible VRAM when
DMA can't be used for BO migration for some reason).

The above was incorrectly used for vram_visible before, resulting in
generally too large values being reported.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agodrm/amdgpu/si: fix crash on headless asics
Alex Deucher [Fri, 27 Jan 2017 15:31:52 +0000 (10:31 -0500)]
drm/amdgpu/si: fix crash on headless asics

Missing check for crtcs present.

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=193341
https://bugs.freedesktop.org/show_bug.cgi?id=99387

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agotracing/kprobes: Fix __init annotation
Arnd Bergmann [Wed, 1 Feb 2017 16:57:56 +0000 (17:57 +0100)]
tracing/kprobes: Fix __init annotation

clang complains about "__init" being attached to a struct name:

kernel/trace/trace_kprobe.c:1375:15: error: '__section__' attribute only applies to functions and global variables

The intention must have been to mark the function as __init instead of
the type, so move the attribute there.

Link: http://lkml.kernel.org/r/20170201165826.2625888-1-arnd@arndb.de
Fixes: f18f97ac43d7 ("tracing/kprobes: Add a helper method to return number of probe hits")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
7 years agoefi/fdt: Avoid FDT manipulation after ExitBootServices()
Ard Biesheuvel [Wed, 1 Feb 2017 17:45:02 +0000 (17:45 +0000)]
efi/fdt: Avoid FDT manipulation after ExitBootServices()

Some AArch64 UEFI implementations disable the MMU in ExitBootServices(),
after which unaligned accesses to RAM are no longer supported.

Commit:

  abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")

fixed an issue in the memory map handling of the stub FDT code, but
inadvertently created an issue with such firmware, by moving some
of the FDT manipulation to after the invocation of ExitBootServices().

Given that the stub's libfdt implementation uses the ordinary, accelerated
string functions, which rely on hardware handling of unaligned accesses,
manipulating the FDT with the MMU off may result in alignment faults.

So fix the situation by moving the update_fdt_memmap() call into the
callback function invoked by efi_exit_boot_services() right before it
calls the ExitBootServices() UEFI service (which is arguably a better
place for it anyway)

Note that disabling the MMU in ExitBootServices() is not compliant with
the UEFI spec, and carries great risk due to the fact that switching from
cached to uncached memory accesses halfway through compiler generated code
(i.e., involving a stack) can never be done in a way that is architecturally
safe.

Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Riku Voipio <riku.voipio@linaro.org>
Cc: <stable@vger.kernel.org>
Cc: mark.rutland@arm.com
Cc: linux-efi@vger.kernel.org
Cc: matt@codeblueprint.co.uk
Cc: leif.lindholm@linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 1 Feb 2017 19:52:27 +0000 (11:52 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix handling of interrupt status in stmmac driver. Just because we
    have masked the event from generating interrupts, doesn't mean the
    bit won't still be set in the interrupt status register. From Alexey
    Brodkin.

 2) Fix DMA API debugging splats in gianfar driver, from Arseny Solokha.

 3) Fix off-by-one error in __ip6_append_data(), from Vlad Yasevich.

 4) cls_flow does not match on icmpv6 codes properly, from Simon Horman.

 5) Initial MAC address can be set incorrectly in some scenerios, from
    Ivan Vecera.

 6) Packet header pointer arithmetic fix in ip6_tnl_parse_tlv_end_lim(),
    from Dan Carpenter.

 7) Fix divide by zero in __tcp_select_window(), from Eric Dumazet.

 8) Fix crash in iwlwifi when unregistering thermal zone, from Jens
    Axboe.

 9) Check for DMA mapping errors in starfire driver, from Alexey
    Khoroshilov.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (31 commits)
  tcp: fix 0 divide in __tcp_select_window()
  ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()
  net: fix ndo_features_check/ndo_fix_features comment ordering
  net/sched: matchall: Fix configuration race
  be2net: fix initial MAC setting
  ipv6: fix flow labels when the traffic class is non-0
  net: thunderx: avoid dereferencing xcv when NULL
  net/sched: cls_flower: Correct matching on ICMPv6 code
  ipv6: Paritially checksum full MTU frames
  net/mlx4_core: Avoid command timeouts during VF driver device shutdown
  gianfar: synchronize DMA API usage by free_skb_rx_queue w/ gfar_new_page
  net: ethtool: add support for 2500BaseT and 5000BaseT link modes
  can: bcm: fix hrtimer/tasklet termination in bcm op removal
  net: adaptec: starfire: add checks for dma mapping errors
  net: phy: micrel: KSZ8795 do not set SUPPORTED_[Asym_]Pause
  can: Fix kernel panic at security_sock_rcv_skb
  net: macb: Fix 64 bit addressing support for GEM
  stmmac: Discard masked flags in interrupt status register
  net/mlx5e: Check ets capability before ets query FW command
  net/mlx5e: Fix update of hash function/key via ethtool
  ...

7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Wed, 1 Feb 2017 18:30:56 +0000 (10:30 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull fscache fixes from Al Viro.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fscache: Fix dead object requeue
  fscache: Clear outstanding writes when disabling a cookie
  FS-Cache: Initialise stores_lock in netfs cookie

7 years agotcp: fix 0 divide in __tcp_select_window()
Eric Dumazet [Wed, 1 Feb 2017 16:33:53 +0000 (08:33 -0800)]
tcp: fix 0 divide in __tcp_select_window()

syszkaller fuzzer was able to trigger a divide by zero, when
TCP window scaling is not enabled.

SO_RCVBUF can be used not only to increase sk_rcvbuf, also
to decrease it below current receive buffers utilization.

If mss is negative or 0, just return a zero TCP window.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()
Dan Carpenter [Wed, 1 Feb 2017 08:46:32 +0000 (11:46 +0300)]
ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()

Casting is a high precedence operation but "off" and "i" are in terms of
bytes so we need to have some parenthesis here.

Fixes: fbfa743a9d2a ("ipv6: fix ip6_tnl_parse_tlv_enc_lim()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Wed, 1 Feb 2017 17:24:00 +0000 (09:24 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This fixes a bug in CBC/CTR on ARM64 that breaks chaining as well as a
  bug in the core API that causes registration failures when a driver
  unloads and then reloads an algorithm"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes
  crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg