openwrt/staging/blogic.git
7 years agostaging: pi433: remove unused rf69_set_dc_cut_off_frequency* functions
Marcin Ciupak [Wed, 20 Dec 2017 16:18:29 +0000 (16:18 +0000)]
staging: pi433: remove unused rf69_set_dc_cut_off_frequency* functions

The following functions:
* rf69_set_dc_cut_off_frequency,
* rf69_set_dc_cut_off_frequency_intern,
* rf69_set_dc_cut_off_frequency_during_afc
are unused and should be removed along with type enum dcc_percent which
was used only by these functions.

Signed-off-by: Marcin Ciupak <marcin.s.ciupak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: remove unused rf69_set_ook_threshold_type function
Marcin Ciupak [Wed, 20 Dec 2017 16:17:27 +0000 (16:17 +0000)]
staging: pi433: remove unused rf69_set_ook_threshold_type function

Function rf69_set_ook_threshold_type is unused and should be removed
along with type enum thresholdType which was used only by that function.

Signed-off-by: Marcin Ciupak <marcin.s.ciupak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: remove unused rf69_set_ook_threshold_step function
Marcin Ciupak [Wed, 20 Dec 2017 16:17:02 +0000 (16:17 +0000)]
staging: pi433: remove unused rf69_set_ook_threshold_step function

Function rf69_set_ook_threshold_step is unused and should be removed
along with type enum thresholdStep which was used only by that function.

Signed-off-by: Marcin Ciupak <marcin.s.ciupak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: remove unused rf69_set_rx_start_timeout function
Marcin Ciupak [Wed, 20 Dec 2017 16:15:49 +0000 (16:15 +0000)]
staging: pi433: remove unused rf69_set_rx_start_timeout function

Function rf69_set_rx_start_timeout is unused and should be removed.

Signed-off-by: Marcin Ciupak <marcin.s.ciupak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: remove unused rf69_set_rssi_timeout function
Marcin Ciupak [Wed, 20 Dec 2017 16:15:10 +0000 (16:15 +0000)]
staging: pi433: remove unused rf69_set_rssi_timeout function

Function rf69_set_rssi_timeout is unused and should be removed.

Signed-off-by: Marcin Ciupak <marcin.s.ciupak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: remove unused rf69_get_payload_length function
Marcin Ciupak [Wed, 20 Dec 2017 16:14:14 +0000 (16:14 +0000)]
staging: pi433: remove unused rf69_get_payload_length function

Function rf69_get_payload_length is unused and should be removed.

Signed-off-by: Marcin Ciupak <marcin.s.ciupak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: make local functions static
Marcin Ciupak [Wed, 20 Dec 2017 16:13:52 +0000 (16:13 +0000)]
staging: pi433: make local functions static

Following functions:
* rf69_get_modulation
* rf69_read_reg
* rf69_write_reg
are used locally only and should be declared as static

Signed-off-by: Marcin Ciupak <marcin.s.ciupak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8712: style fix multiple line dereferences
Martin Homuth [Tue, 19 Dec 2017 20:16:23 +0000 (21:16 +0100)]
staging: rtl8712: style fix multiple line dereferences

This patch fixes various coding style issues in the rtl8712 module as
noted by checkpatch.pl related to dereferencing over multiple lines.

It fixes the following checkpatch.pl warning:

WARNING: Avoid multiple line dereference - prefer %s

Signed-off-by: Martin Homuth <martin@martinhomuth.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: comedi: add identifiers to function parameters
Michael Gebhard [Thu, 21 Dec 2017 16:36:30 +0000 (17:36 +0100)]
staging: comedi: add identifiers to function parameters

Fix these checkpatch.pl warnings in comedidev.h:
WARNING: function definition argument '<name>' should also have an identifier name

Introduces this checkpatch.pl warning in lines 195 and 205:
WARNING: line over 80 characters
Breaking these lines would make the code less compact.

Signed-off-by: Michael Gebhard <im72ywil@cip.cs.fau.de>
Signed-off-by: David Sauerwein <la38vyti@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: lustre: Replace 'uint32_t' with 'u32' and 'uint64_t' with 'u64'
Roman Storozhenko [Tue, 19 Dec 2017 17:56:54 +0000 (20:56 +0300)]
staging: lustre: Replace 'uint32_t' with 'u32' and 'uint64_t' with 'u64'

There are two reasons for replacing 'uint32_t' with 'u32'
and 'uint64_t' with 'u64':

1) As Linus Torvalds have said we should use kernel types:
http://lkml.iu.edu/hypermail//linux/kernel/1506.0/00160.html

2) There are only few places in the lustre codebase that use such types.
In the most cases it uses 'u32' and 'u64'.

Signed-off-by: Roman Storozhenko <romeusmeister@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: rtl8723bs: Do not check for NOT NULL before kfree()
Shreeya Patel [Tue, 19 Dec 2017 19:07:45 +0000 (00:37 +0530)]
Staging: rtl8723bs: Do not check for NOT NULL before kfree()

Do not check for NOT NULL before calling kfree because
if the pointer is NULL, no action occurs.
Done using the following semantic patch by coccinelle.

@@
expression ptr;
@@

- if (ptr != NULL)
  kfree(ptr);

Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: vchiq_arm: Cleaning up codestyle warnings
Mikhail Shvetsov [Wed, 20 Dec 2017 12:30:16 +0000 (15:30 +0300)]
staging: vchiq_arm: Cleaning up codestyle warnings

This removes checkpatch.pl warnings:
WARNING: line over 80 characters

Signed-off-by: Mikhail Shvetsov <lameli67@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: vchiq_arm: Fixing code style of comments
Mikhail Shvetsov [Wed, 20 Dec 2017 12:30:15 +0000 (15:30 +0300)]
staging: vchiq_arm: Fixing code style of comments

This removes checkpatch.pl warnings:

WARNING: Block comments use a trailing */ on a separate line
WARNING: Block comments should align the * on each line
WARNING: Block comments use * on subsequent lines

Signed-off-by: Mikhail Shvetsov <lameli67@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: vchiq_arm: Remove useless comments.
Mikhail Shvetsov [Wed, 20 Dec 2017 12:30:14 +0000 (15:30 +0300)]
staging: vchiq_arm: Remove useless comments.

This removes useless comments duplicate function names.

Signed-off-by: Mikhail Shvetsov <lameli67@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: fix CamelCase for fifo variables
Valentin Vidic [Tue, 19 Dec 2017 16:02:22 +0000 (17:02 +0100)]
staging: pi433: fix CamelCase for fifo variables

Fixes checkpatch warnings:

  CHECK: Avoid CamelCase: <fifoEmpty>
  CHECK: Avoid CamelCase: <fifoFillCondition>
  CHECK: Avoid CamelCase: <fifoFull>
  CHECK: Avoid CamelCase: <fifoLevel>
  CHECK: Avoid CamelCase: <fifoLevelBelowThreshold>
  CHECK: Avoid CamelCase: <fifoNotEmpty>
  CHECK: Avoid CamelCase: <fifoOverrun>

Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: pi433_write fixed the return value
Oliver Graute [Tue, 19 Dec 2017 19:58:31 +0000 (20:58 +0100)]
staging: pi433: pi433_write fixed the return value

The pi433_write function should return the number of processed bytes

Reported-by: Marcin Ciupak <marcin.s.ciupak@gmail.com>
Signed-off-by: Oliver Graute <oliver.graute@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: fsl-dpaa2/eth: Flow affinity for non-forwarded traffic
Ioana Radulescu [Thu, 21 Dec 2017 12:33:21 +0000 (06:33 -0600)]
staging: fsl-dpaa2/eth: Flow affinity for non-forwarded traffic

The previous patch ensures Tx flow affinity for forwarded frames,
but for termination traffic the initial flow affinity is determined
based on the skb hash, which is expected to hit only a few Tx queues
when there is a small number of flows.

Instead, use XPS (transmit packet steering) to set netdevice queue
affinity to the sending core.

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: fsl-dpaa2/eth: Flow affinity for IP forwarding
Ioana Radulescu [Thu, 21 Dec 2017 12:33:20 +0000 (06:33 -0600)]
staging: fsl-dpaa2/eth: Flow affinity for IP forwarding

The driver xmit function chooses an egress FQ based on the current
core id. The network stack itself sets a mapping field in the skb
based on many things - the default one being a hash on packet fields,
which the current driver ignores.

This patch saves the ingress frame flow affinity information in the
skb. In case of forwarded frames, this info will then be used for Tx
and Tx confirmation hardware queue selection, ensuring all processing
of the given frame is done on a single core.

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: use size_t consistently
Gilad Ben-Yossef [Wed, 20 Dec 2017 07:23:31 +0000 (07:23 +0000)]
staging: ccree: use size_t consistently

Fix declaration, implementation and wrapper function to use
the same size_t type we actually define the parameter to be.

Fixes: 3f268f5d6669 ("staging: ccree: turn compile time debug log to params")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: remove unused function
Valentin Vidic [Tue, 19 Dec 2017 14:56:23 +0000 (15:56 +0100)]
staging: pi433: remove unused function

As it turns out rf69_get_lna_gain is not used at all.

Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: replace printk calls with dev_dbg
Valentin Vidic [Tue, 19 Dec 2017 14:56:22 +0000 (15:56 +0100)]
staging: pi433: replace printk calls with dev_dbg

Fixes checkpatch warning:

  WARNING: printk() should include KERN_<LEVEL> facility level

Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: avoid logging ENOMEM messages
Valentin Vidic [Tue, 19 Dec 2017 14:56:21 +0000 (15:56 +0100)]
staging: pi433: avoid logging ENOMEM messages

Fixes checkpatch warning:

  WARNING: Possible unnecessary 'out of memory' message

Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: replace unsigned with unsigned int
Valentin Vidic [Tue, 19 Dec 2017 14:56:20 +0000 (15:56 +0100)]
staging: pi433: replace unsigned with unsigned int

Fixes checkpatch warning:

  WARNING: Prefer 'unsigned int' to bare use of 'unsigned'

Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: collapse else block after return statement
Valentin Vidic [Tue, 19 Dec 2017 14:56:18 +0000 (15:56 +0100)]
staging: pi433: collapse else block after return statement

Fixes checkpatch warning:

  WARNING: else is not generally useful after a break or return

Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: Pi433: Bugfix for wrong argument for sizeof() in TX thread
Marcus Wolf [Mon, 18 Dec 2017 17:27:58 +0000 (19:27 +0200)]
Staging: Pi433: Bugfix for wrong argument for sizeof() in TX thread

sizeof(array) != sizeof(pointer to array)
Fixes: "staging: pi433: reduce stack size in tx thread"
Fixes: 62f39d49d168 ("staging: pi433: reduce stack size in tx thread")
Signed-off-by: Marcus Wolf <linux@wolf-entwicklungen.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: rtl8723bs: Replace true with x and false with !x
Shreeya Patel [Sun, 17 Dec 2017 09:37:34 +0000 (15:07 +0530)]
Staging: rtl8723bs: Replace true with x and false with !x

Replace true and false keywords with "x" and "!x"
respectively to follow the kernel coding style.

Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8712: style fix returned error code
Martin Homuth [Mon, 18 Dec 2017 23:24:07 +0000 (00:24 +0100)]
staging: rtl8712: style fix returned error code

This patch fixes a coding style issues in the rtl8712 module as noted
by checkpatch.pl regarding the returned error code.

It fixes the following checkpatch.pl warning:

WARNING: ENOSYS means 'invalid syscall nr' and nothing else

Signed-off-by: Martin Homuth <martin@martinhomuth.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8712: style fix unneeded else
Martin Homuth [Mon, 18 Dec 2017 23:24:06 +0000 (00:24 +0100)]
staging: rtl8712: style fix unneeded else

This patch fixes a coding style issues in the rtl8712 module as noted
by checkpatch.pl where an unnecessary else is used.

It fixes the following checkpatch.pl warning:

WARNING: else is not generally useful after a break or return

Signed-off-by: Martin Homuth <martin@martinhomuth.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8712: style fix indentation
Martin Homuth [Mon, 18 Dec 2017 23:24:05 +0000 (00:24 +0100)]
staging: rtl8712: style fix indentation

This patch fixes various coding style issues in the rtl8712 module as
noted by checkpatch.pl related to indentation.

It fixes the following checkpatch.pl warning:

WARNING: suspect code indent for conditional statements

Signed-off-by: Martin Homuth <martin@martinhomuth.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8712: style fix over 80 characters warnings
Martin Homuth [Mon, 18 Dec 2017 23:18:43 +0000 (00:18 +0100)]
staging: rtl8712: style fix over 80 characters warnings

This patch fixes various coding style issues in the rtl8712 module as
noted by checkpatch.pl by reducing the characters per line to under
80.

It fixes the following checkpatch.pl warning:

WARNING: line over 80 characters

Signed-off-by: Martin Homuth <martin@martinhomuth.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: rtl8192u: ieee80211: ieee80211_rx.c fix checkpatch space prohibited before...
Abdul Rauf [Sat, 16 Dec 2017 14:25:55 +0000 (19:25 +0500)]
staging: rtl8192u: ieee80211: ieee80211_rx.c fix checkpatch space prohibited before that '++'

Fix the following errors:
space prohibited before that '++' (ctx:WxO)

Signed-off-by: Abdul Rauf <abdulraufmujahid@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: ks7010: ks_wlan_net: Fixing coding style warning
SUNIL KALLUR RAMEGOWDA [Wed, 13 Dec 2017 21:12:04 +0000 (22:12 +0100)]
Staging: ks7010: ks_wlan_net: Fixing coding style warning

Removing the extra spaces before tabs, checkpatch:
WARNING: please, no space before tabs

Signed-off-by: SUNIL KALLUR RAMEGOWDA <kallur.sunil@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: vchiq_arm: fix open brace placement errors
Tara Null [Sun, 17 Dec 2017 22:36:21 +0000 (22:36 +0000)]
staging: vchiq_arm: fix open brace placement errors

Fix checkpatch errors relating to open brace placement for enums and
function definitions.

Signed-off-by: Tara Null <tn@fastmail.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: vc04_services: fix brace coding style issues in vchiq_shim.c
Tomas Marek [Wed, 13 Dec 2017 20:51:22 +0000 (12:51 -0800)]
Staging: vc04_services: fix brace coding style issues in vchiq_shim.c

This patch fix brace on next line coding style errors reported by
checkpatch.

Signed-off-by: Tomas Marek <marek_tomas@centrum.cz>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: vt6655: Use GFP_KERNEL in kzalloc
Jia-Ju Bai [Mon, 18 Dec 2017 09:07:54 +0000 (17:07 +0800)]
staging: vt6655: Use GFP_KERNEL in kzalloc

Four kzalloc functions are called with GFP_ATOMIC.
But according to driver call graph, they are not in atomic context,
namely no spinlock is held nor in an interrupt handler.

All these "GFP_ATOMIC"s are unnecessary,
and replace with with "GFP_KERNEL"s.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoStaging: ccree: Add blank line after declarations
Kamal Heib [Fri, 15 Dec 2017 23:43:13 +0000 (01:43 +0200)]
Staging: ccree: Add blank line after declarations

This patch adds a blank line after declarations to
improve code readability.

Issue find by checkpatch.pl script.
WARNING: Missing a blank line after declarations

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: update TODO
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:47 +0000 (14:02 +0000)]
staging: ccree: update TODO

Update TODO with handling on sysfs -> debugfs transition

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: fix fips event irq handling build
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:46 +0000 (14:02 +0000)]
staging: ccree: fix fips event irq handling build

When moving from internal for kernel FIPS infrastructure the FIPS event irq
handling code was left with the old ifdef by mistake. Fix it.

Fixes: b7e607bf33a2 ("staging: ccree: move FIPS support to kernel infrastructure")
Cc: stable@vger.kernel.org
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: remove ssi_config.h
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:45 +0000 (14:02 +0000)]
staging: ccree: remove ssi_config.h

Now that the only thing left in ssi_config is the maximum
DMA mask length we get move that to ssi_driver.h and get
rid of the file.

All of ccree is now runtime configurable or under Kbuild control.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: turn compile time debug log to params
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:44 +0000 (14:02 +0000)]
staging: ccree: turn compile time debug log to params

The ccree driver has some support to dump runtime data
to kernel log to assist in debugging. The code used to be
enabled by a build time flag. Refactor to enable it via
module/kernel parameters.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: remove useless debug code
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:43 +0000 (14:02 +0000)]
staging: ccree: remove useless debug code

Remove a bunch of useless debug code ifdef'ed out

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: remove CC_IRQ_DELAY dead code
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:42 +0000 (14:02 +0000)]
staging: ccree: remove CC_IRQ_DELAY dead code

Remove dead code from older version which is not supported in current
hardware.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: staging: ccree: replace sysfs by debugfs interface
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:41 +0000 (14:02 +0000)]
staging: ccree: staging: ccree: replace sysfs by debugfs interface

The ccree driver has had a none standard sysfs interface for debugging.
Replace it with a proper debugfs interface.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: add explicit module init/exit func
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:40 +0000 (14:02 +0000)]
staging: ccree: add explicit module init/exit func

We need to do a module global scope init/exit operation to support
the debugfs interface we are about to introduce in the next patch,
so wean the module of the boiler plate saving macro as it will no
longer be sufficient.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: clean up PM registration
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:39 +0000 (14:02 +0000)]
staging: ccree: clean up PM registration

Clean up power management registration.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: ccree: drop ifdef CONFIG_OF in code
Gilad Ben-Yossef [Thu, 14 Dec 2017 14:02:38 +0000 (14:02 +0000)]
staging: ccree: drop ifdef CONFIG_OF in code

As we already depend on CONFIG_OF via Kconfig no need to
support conditional build without it.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: remove multiple blank lines
Valentin Vidic [Wed, 13 Dec 2017 13:09:20 +0000 (14:09 +0100)]
staging: pi433: remove multiple blank lines

Fixes checkpatch warning for multiple blank lines in source.

Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: pi433: fix CamelCase for dccPercent variables
Valentin Vidic [Wed, 13 Dec 2017 20:01:30 +0000 (21:01 +0100)]
staging: pi433: fix CamelCase for dccPercent variables

Fixes checkpatch warning:

  CHECK: Avoid CamelCase: <dccPercent>

Signed-off-by: Valentin Vidic <Valentin.Vidic@CARNet.hr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: comedi: s626.c - fix multiline dereference
Roman Lakeev [Thu, 14 Dec 2017 04:39:53 +0000 (20:39 -0800)]
staging: comedi: s626.c - fix multiline dereference

staging: comedi: s626.c - fix the following checkpatch issues:
WARNING: Avoid multiple line dereference - prefer 'devpriv->rps_buf.logical_base'
#1380: FILE: drivers/s626.c:1380:
+    (unsigned long)devpriv->
+   rps_buf.logical_base);

WARNING: Avoid multiple line dereference - prefer 'cmd->scan_begin_arg'
#1898: FILE: drivers/s626.c:1898:
+ err |= comedi_check_trigger_arg_min(&cmd->
+     scan_begin_arg,

Signed-off-by: Roman Lakeev <sunnyddayss@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: greybus: arche-platform.c: Fix alignment should match open parenthesis
Kamal Heib [Sun, 17 Dec 2017 17:56:27 +0000 (19:56 +0200)]
staging: greybus: arche-platform.c: Fix alignment should match open parenthesis

Fix "alignment should match open parenthesis" checkpatch.pl error.

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: greybus: arche-apb-ctrl.c: Fix alignment should match open parenthesis
Kamal Heib [Sun, 17 Dec 2017 17:56:26 +0000 (19:56 +0200)]
staging: greybus: arche-apb-ctrl.c: Fix alignment should match open parenthesis

Fix "alignment should match open parenthesis" checkpatch.pl error.

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agostaging: typec: fix endianness mismatch identified by sparse
Gabriel L. Somlo [Mon, 18 Dec 2017 21:55:24 +0000 (16:55 -0500)]
staging: typec: fix endianness mismatch identified by sparse

Eliminate the following sparse warnings:

tcpci.c:291:38: warning: incorrect type in argument 1 (different base types)
tcpci.c:291:38:    expected unsigned short [unsigned] [usertype] header
tcpci.c:291:38:    got restricted __le16 const [usertype] header
tcpci.c:296:16: warning: incorrect type in assignment (different base types)
tcpci.c:296:16:    expected unsigned int [unsigned] header
tcpci.c:296:16:    got restricted __le16
tcpci.c:394:28: warning: incorrect type in assignment (different base types)
tcpci.c:394:28:    expected restricted __le16 [usertype] header
tcpci.c:394:28:    got unsigned int [unsigned] [addressable] reg

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoMerge 4.15-rc4 into staging-next
Greg Kroah-Hartman [Mon, 18 Dec 2017 08:12:51 +0000 (09:12 +0100)]
Merge 4.15-rc4 into staging-next

We want the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
7 years agoLinux 4.15-rc4
Linus Torvalds [Mon, 18 Dec 2017 02:59:59 +0000 (18:59 -0800)]
Linux 4.15-rc4

7 years agoRevert "exec: avoid RLIMIT_STACK races with prlimit()"
Kees Cook [Tue, 12 Dec 2017 19:28:38 +0000 (11:28 -0800)]
Revert "exec: avoid RLIMIT_STACK races with prlimit()"

This reverts commit 04e35f4495dd560db30c25efca4eecae8ec8c375.

SELinux runs with secureexec for all non-"noatsecure" domain transitions,
which means lots of processes end up hitting the stack hard-limit change
that was introduced in order to fix a race with prlimit(). That race fix
will need to be redesigned.

Reported-by: Laura Abbott <labbott@redhat.com>
Reported-by: Tomáš Trnka <trnka@scm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge branch 'WIP.x86-pti.base-for-linus' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Sun, 17 Dec 2017 21:57:08 +0000 (13:57 -0800)]
Merge branch 'WIP.x86-pti.base-for-linus' of git://git./linux/kernel/git/tip/tip

Pull Page Table Isolation (PTI) v4.14 backporting base tree from Ingo Molnar:
 "This tree contains the v4.14 PTI backport preparatory tree, which
  consists of four merges of upstream trees and 7 cherry-picked commits,
  which the upcoming PTI work depends on"

NOTE! The resulting tree is exactly the same as the original base tree
(ie the diff between this commit and its immediate first parent is
empty).

The only reason for this merge is literally to have a common point for
the actual PTI changes so that the commits can be shared in both the
4.15 and 4.14 trees.

* 'WIP.x86-pti.base-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow
  locking/barriers: Convert users of lockless_dereference() to READ_ONCE()
  locking/barriers: Add implicit smp_read_barrier_depends() to READ_ONCE()
  bpf: fix build issues on um due to mising bpf_perf_event.h
  perf/x86: Enable free running PEBS for REGS_USER/INTR
  x86: Make X86_BUG_FXSAVE_LEAK detectable in CPUID on AMD
  x86/cpufeature: Add User-Mode Instruction Prevention definitions

7 years agoMerge branch 'WIP.x86-pti.base.prep-for-linus' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Sun, 17 Dec 2017 21:54:31 +0000 (13:54 -0800)]
Merge branch 'WIP.x86-pti.base.prep-for-linus' of git://git./linux/kernel/git/tip/tip

Pull Page Table Isolation (PTI) preparatory tree from Ingo Molnar:
 "This does a rename to free up linux/pti.h to be used by the upcoming
  page table isolation feature"

* 'WIP.x86-pti.base.prep-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  drivers/misc/intel/pti: Rename the header file to free up the namespace

7 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 17 Dec 2017 21:48:50 +0000 (13:48 -0800)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fix from Thomas Gleixner:
 "A single bugfix which prevents arbitrary sigev_notify values in
  posix-timers"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  posix-timer: Properly check sigevent->sigev_notify

7 years agoMerge tag 'dmaengine-fix-4.15-rc4' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Sun, 17 Dec 2017 21:28:49 +0000 (13:28 -0800)]
Merge tag 'dmaengine-fix-4.15-rc4' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "This time consisting of fixes in a bunch of drivers and the dmatest
  module:

   - Fix for disable clk on error path in fsl-edma driver
   - Disable clk fail fix in jz4740 driver
   - Fix long pending bug in dmatest driver for dangling pointer
   - Fix potential NULL pointer dereference in at_hdmac driver
   - Error handling path in ioat driver"

* tag 'dmaengine-fix-4.15-rc4' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: fsl-edma: disable clks on all error paths
  dmaengine: jz4740: disable/unprepare clk if probe fails
  dmaengine: dmatest: move callback wait queue to thread context
  dmaengine: at_hdmac: fix potential NULL pointer dereference in atc_prep_dma_interleaved
  dmaengine: ioat: Fix error handling path

7 years agocramfs: fix MTD dependency
Arnd Bergmann [Fri, 10 Nov 2017 14:57:21 +0000 (15:57 +0100)]
cramfs: fix MTD dependency

With CONFIG_MTD=m and CONFIG_CRAMFS=y, we now get a link failure:

  fs/cramfs/inode.o: In function `cramfs_mount': inode.c:(.text+0x220): undefined reference to `mount_mtd'
  fs/cramfs/inode.o: In function `cramfs_mtd_fill_super':
  inode.c:(.text+0x6d8): undefined reference to `mtd_point'
  inode.c:(.text+0xae4): undefined reference to `mtd_unpoint'

This adds a more specific Kconfig dependency to avoid the broken
configuration.

Alternatively we could make CRAMFS itself depend on "MTD || !MTD" with a
similar result.

Fixes: 99c18ce580c6 ("cramfs: direct memory access support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sun, 17 Dec 2017 20:18:35 +0000 (12:18 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull vfs fixes from Al Viro:
 "The alloc_super() one is a regression in this merge window, lazytime
  thing is older..."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  VFS: Handle lazytime in do_mount()
  alloc_super(): do ->s_umount initialization earlier

7 years agoMerge tag 'ext4_for_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
Linus Torvalds [Sun, 17 Dec 2017 20:14:33 +0000 (12:14 -0800)]
Merge tag 'ext4_for_stable' of git://git./linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "Fix a regression which caused us to fail to interpret symlinks in very
  ancient ext3 file system images.

  Also fix two xfstests failures, one of which could cause an OOPS, plus
  an additional bug fix caught by fuzz testing"

* tag 'ext4_for_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix crash when a directory's i_size is too small
  ext4: add missing error check in __ext4_new_inode()
  ext4: fix fdatasync(2) after fallocate(2) operation
  ext4: support fast symlinks from ext3 file systems

7 years agox86/mm/kasan: Don't use vmemmap_populate() to initialize shadow
Andrey Ryabinin [Thu, 16 Nov 2017 01:36:35 +0000 (17:36 -0800)]
x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow

[ Note, this is a Git cherry-pick of the following commit:

    d17a1d97dc20: ("x86/mm/kasan: don't use vmemmap_populate() to initialize shadow")

  ... for easier x86 PTI code testing and back-porting. ]

The KASAN shadow is currently mapped using vmemmap_populate() since that
provides a semi-convenient way to map pages into init_top_pgt.  However,
since that no longer zeroes the mapped pages, it is not suitable for
KASAN, which requires zeroed shadow memory.

Add kasan_populate_shadow() interface and use it instead of
vmemmap_populate().  Besides, this allows us to take advantage of
gigantic pages and use them to populate the shadow, which should save us
some memory wasted on page tables and reduce TLB pressure.

Link: http://lkml.kernel.org/r/20171103185147.2688-2-pasha.tatashin@oracle.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Steven Sistare <steven.sistare@oracle.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Bob Picco <bob.picco@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agolocking/barriers: Convert users of lockless_dereference() to READ_ONCE()
Will Deacon [Tue, 24 Oct 2017 10:22:48 +0000 (11:22 +0100)]
locking/barriers: Convert users of lockless_dereference() to READ_ONCE()

[ Note, this is a Git cherry-pick of the following commit:

    506458efaf15 ("locking/barriers: Convert users of lockless_dereference() to READ_ONCE()")

  ... for easier x86 PTI code testing and back-porting. ]

READ_ONCE() now has an implicit smp_read_barrier_depends() call, so it
can be used instead of lockless_dereference() without any change in
semantics.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1508840570-22169-4-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agolocking/barriers: Add implicit smp_read_barrier_depends() to READ_ONCE()
Will Deacon [Tue, 24 Oct 2017 10:22:47 +0000 (11:22 +0100)]
locking/barriers: Add implicit smp_read_barrier_depends() to READ_ONCE()

[ Note, this is a Git cherry-pick of the following commit:

    76ebbe78f739 ("locking/barriers: Add implicit smp_read_barrier_depends() to READ_ONCE()")

  ... for easier x86 PTI code testing and back-porting. ]

In preparation for the removal of lockless_dereference(), which is the
same as READ_ONCE() on all architectures other than Alpha, add an
implicit smp_read_barrier_depends() to READ_ONCE() so that it can be
used to head dependency chains on all architectures.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1508840570-22169-3-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agobpf: fix build issues on um due to mising bpf_perf_event.h
Daniel Borkmann [Tue, 12 Dec 2017 01:25:31 +0000 (02:25 +0100)]
bpf: fix build issues on um due to mising bpf_perf_event.h

[ Note, this is a Git cherry-pick of the following commit:

    a23f06f06dbe ("bpf: fix build issues on um due to mising bpf_perf_event.h")

  ... for easier x86 PTI code testing and back-porting. ]

Since c895f6f703ad ("bpf: correct broken uapi for
BPF_PROG_TYPE_PERF_EVENT program type") um (uml) won't build
on i386 or x86_64:

  [...]
    CC      init/main.o
  In file included from ../include/linux/perf_event.h:18:0,
                   from ../include/linux/trace_events.h:10,
                   from ../include/trace/syscall.h:7,
                   from ../include/linux/syscalls.h:82,
                   from ../init/main.c:20:
  ../include/uapi/linux/bpf_perf_event.h:11:32: fatal error:
  asm/bpf_perf_event.h: No such file or directory #include
  <asm/bpf_perf_event.h>
  [...]

Lets add missing bpf_perf_event.h also to um arch. This seems
to be the only one still missing.

Fixes: c895f6f703ad ("bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Richard Weinberger <richard@sigma-star.at>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Richard Weinberger <richard@sigma-star.at>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agoperf/x86: Enable free running PEBS for REGS_USER/INTR
Andi Kleen [Thu, 31 Aug 2017 21:46:30 +0000 (14:46 -0700)]
perf/x86: Enable free running PEBS for REGS_USER/INTR

[ Note, this is a Git cherry-pick of the following commit:

    a47ba4d77e12 ("perf/x86: Enable free running PEBS for REGS_USER/INTR")

  ... for easier x86 PTI code testing and back-porting. ]

Currently free running PEBS is disabled when user or interrupt
registers are requested. Most of the registers are actually
available in the PEBS record and can be supported.

So we just need to check for the supported registers and then
allow it: it is all except for the segment register.

For user registers this only works when the counter is limited
to ring 3 only, so this also needs to be checked.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170831214630.21892-1-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agox86: Make X86_BUG_FXSAVE_LEAK detectable in CPUID on AMD
Rudolf Marek [Tue, 28 Nov 2017 21:01:06 +0000 (22:01 +0100)]
x86: Make X86_BUG_FXSAVE_LEAK detectable in CPUID on AMD

[ Note, this is a Git cherry-pick of the following commit:

    2b67799bdf25 ("x86: Make X86_BUG_FXSAVE_LEAK detectable in CPUID on AMD")

  ... for easier x86 PTI code testing and back-porting. ]

The latest AMD AMD64 Architecture Programmer's Manual
adds a CPUID feature XSaveErPtr (CPUID_Fn80000008_EBX[2]).

If this feature is set, the FXSAVE, XSAVE, FXSAVEOPT, XSAVEC, XSAVES
/ FXRSTOR, XRSTOR, XRSTORS always save/restore error pointers,
thus making the X86_BUG_FXSAVE_LEAK workaround obsolete on such CPUs.

Signed-Off-By: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Tested-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Link: https://lkml.kernel.org/r/bdcebe90-62c5-1f05-083c-eba7f08b2540@assembler.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agox86/cpufeature: Add User-Mode Instruction Prevention definitions
Ricardo Neri [Mon, 6 Nov 2017 02:27:51 +0000 (18:27 -0800)]
x86/cpufeature: Add User-Mode Instruction Prevention definitions

[ Note, this is a Git cherry-pick of the following commit: (limited to the cpufeatures.h file)

    3522c2a6a4f3 ("x86/cpufeature: Add User-Mode Instruction Prevention definitions")

  ... for easier x86 PTI code testing and back-porting. ]

User-Mode Instruction Prevention is a security feature present in new
Intel processors that, when set, prevents the execution of a subset of
instructions if such instructions are executed in user mode (CPL > 0).
Attempting to execute such instructions causes a general protection
exception.

The subset of instructions comprises:

 * SGDT - Store Global Descriptor Table
 * SIDT - Store Interrupt Descriptor Table
 * SLDT - Store Local Descriptor Table
 * SMSW - Store Machine Status Word
 * STR  - Store Task Register

This feature is also added to the list of disabled-features to allow
a cleaner handling of build-time configuration.

Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Chen Yucong <slaoub@gmail.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi V. Shankar <ravi.v.shankar@intel.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: ricardo.neri@intel.com
Link: http://lkml.kernel.org/r/1509935277-22138-7-git-send-email-ricardo.neri-calderon@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agoMerge commit 'upstream-x86-virt' into WIP.x86/mm
Ingo Molnar [Fri, 1 Dec 2017 09:34:04 +0000 (10:34 +0100)]
Merge commit 'upstream-x86-virt' into WIP.x86/mm

Merge a minimal set of virt cleanups, for a base for the MM isolation patches.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agoMerge branch 'upstream-acpi-fixes' into WIP.x86/pti.base
Ingo Molnar [Sun, 17 Dec 2017 12:09:31 +0000 (13:09 +0100)]
Merge branch 'upstream-acpi-fixes' into WIP.x86/pti.base

Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agoMerge branch 'upstream-x86-selftests' into WIP.x86/pti.base
Ingo Molnar [Sun, 17 Dec 2017 12:04:28 +0000 (13:04 +0100)]
Merge branch 'upstream-x86-selftests' into WIP.x86/pti.base

Conflicts:
arch/x86/kernel/cpu/Makefile

Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agoMerge commit 'upstream-x86-entry' into WIP.x86/mm
Ingo Molnar [Fri, 1 Dec 2017 09:32:48 +0000 (10:32 +0100)]
Merge commit 'upstream-x86-entry' into WIP.x86/mm

Pull in a minimal set of v4.15 entry code changes, for a base for the MM isolation patches.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agodrivers/misc/intel/pti: Rename the header file to free up the namespace
Ingo Molnar [Tue, 5 Dec 2017 13:14:47 +0000 (14:14 +0100)]
drivers/misc/intel/pti: Rename the header file to free up the namespace

We'd like to use the 'PTI' acronym for 'Page Table Isolation' - free up the
namespace by renaming the <linux/pti.h> driver header to <linux/intel-pti.h>.

(Also standardize the header guard name while at it.)

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: J Freyensee <james_p_freyensee@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Sat, 16 Dec 2017 21:43:08 +0000 (13:43 -0800)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "More fixes from testing done on the rc kernel, including more SELinux
  testing. Looking forward, lockdep found regression today in ipoib
  which is still being fixed.

  Summary:

   - Fix for SELinux on the umad SMI path. Some old hardware does not
     fill the PKey properly exposing another bug in the newer SELinux
     code.

   - Check the input port as we can exceed array bounds from this user
     supplied value

   - Users are unable to use the hash field support as they want due to
     incorrect checks on the field restrictions, correct that so the
     feature works as intended

   - User triggerable oops in the NETLINK_RDMA handler

   - cxgb4 driver fix for a bad interaction with CQ flushing in iser
     caused by patches in this merge window, and bad CQ flushing during
     normal close.

   - Unbalanced memalloc_noio in ipoib in an error path"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  IB/ipoib: Restore MM behavior in case of tx_ring allocation failure
  iw_cxgb4: only insert drain cqes if wq is flushed
  iw_cxgb4: only clear the ARMED bit if a notification is needed
  RDMA/netlink: Fix general protection fault
  IB/mlx4: Fix RSS hash fields restrictions
  IB/core: Don't enforce PKey security on SMI MADs
  IB/core: Bound check alternate path port number

7 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 16 Dec 2017 21:34:38 +0000 (13:34 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Two bugfixes for the AT24 I2C eeprom driver and some minor corrections
  for I2C bus drivers"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: piix4: Fix port number check on release
  i2c: stm32: Fix copyrights
  i2c-cht-wc: constify platform_device_id
  eeprom: at24: change nvmem stride to 1
  eeprom: at24: fix I2C device selection for runtime PM

7 years agoMerge tag 'nfs-for-4.15-3' of git://git.linux-nfs.org/projects/anna/linux-nfs
Linus Torvalds [Sat, 16 Dec 2017 21:12:53 +0000 (13:12 -0800)]
Merge tag 'nfs-for-4.15-3' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client fixes from Anna Schumaker:
 "This has two stable bugfixes, one to fix a BUG_ON() when
  nfs_commit_inode() is called with no outstanding commit requests and
  another to fix a race in the SUNRPC receive codepath.

  Additionally, there are also fixes for an NFS client deadlock and an
  xprtrdma performance regression.

  Summary:

  Stable bugfixes:
   - NFS: Avoid a BUG_ON() in nfs_commit_inode() by not waiting for a
     commit in the case that there were no commit requests.
   - SUNRPC: Fix a race in the receive code path

  Other fixes:
   - NFS: Fix a deadlock in nfs client initialization
   - xprtrdma: Fix a performance regression for small IOs"

* tag 'nfs-for-4.15-3' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  SUNRPC: Fix a race in the receive code path
  nfs: don't wait on commit in nfs_commit_inode() if there were no commit requests
  xprtrdma: Spread reply processing over more CPUs
  nfs: fix a deadlock in nfs client initialization

7 years agoRevert "mm: replace p??_write with pte_access_permitted in fault + gup paths"
Linus Torvalds [Sat, 16 Dec 2017 02:53:22 +0000 (18:53 -0800)]
Revert "mm: replace p??_write with pte_access_permitted in fault + gup paths"

This reverts commits 5c9d2d5c269cc7da82b894e9, and e7fe7b5cae90.

We'll probably need to revisit this, but basically we should not
complicate the get_user_pages_fast() case, and checking the actual page
table protection key bits will require more care anyway, since the
protection keys depend on the exact state of the VM in question.

Particularly when doing a "remote" page lookup (ie in somebody elses VM,
not your own), you need to be much more careful than this was.  Dave
Hansen says:

 "So, the underlying bug here is that we now a get_user_pages_remote()
  and then go ahead and do the p*_access_permitted() checks against the
  current PKRU. This was introduced recently with the addition of the
  new p??_access_permitted() calls.

  We have checks in the VMA path for the "remote" gups and we avoid
  consulting PKRU for them. This got missed in the pkeys selftests
  because I did a ptrace read, but not a *write*. I also didn't
  explicitly test it against something where a COW needed to be done"

It's also not entirely clear that it makes sense to check the protection
key bits at this level at all.  But one possible eventual solution is to
make the get_user_pages_fast() case just abort if it sees protection key
bits set, which makes us fall back to the regular get_user_pages() case,
which then has a vma and can do the check there if we want to.

We'll see.

Somewhat related to this all: what we _do_ want to do some day is to
check the PAGE_USER bit - it should obviously always be set for user
pages, but it would be a good check to have back.  Because we have no
generic way to test for it, we lost it as part of moving over from the
architecture-specific x86 GUP implementation to the generic one in
commit e585513b76f7 ("x86/mm/gup: Switch GUP to the generic
get_user_page_fast() implementation").

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 15 Dec 2017 21:08:37 +0000 (13:08 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Clamp timeouts to INT_MAX in conntrack, from Jay Elliot.

 2) Fix broken UAPI for BPF_PROG_TYPE_PERF_EVENT, from Hendrik
    Brueckner.

 3) Fix locking in ieee80211_sta_tear_down_BA_sessions, from Johannes
    Berg.

 4) Add missing barriers to ptr_ring, from Michael S. Tsirkin.

 5) Don't advertise gigabit in sh_eth when not available, from Thomas
    Petazzoni.

 6) Check network namespace when delivering to netlink taps, from Kevin
    Cernekee.

 7) Kill a race in raw_sendmsg(), from Mohamed Ghannam.

 8) Use correct address in TCP md5 lookups when replying to an incoming
    segment, from Christoph Paasch.

 9) Add schedule points to BPF map alloc/free, from Eric Dumazet.

10) Don't allow silly mtu values to be used in ipv4/ipv6 multicast, also
    from Eric Dumazet.

11) Fix SKB leak in tipc, from Jon Maloy.

12) Disable MAC learning on OVS ports of mlxsw, from Yuval Mintz.

13) SKB leak fix in skB_complete_tx_timestamp(), from Willem de Bruijn.

14) Add some new qmi_wwan device IDs, from Daniele Palmas.

15) Fix static key imbalance in ingress qdisc, from Jiri Pirko.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (76 commits)
  net: qcom/emac: Reduce timeout for mdio read/write
  net: sched: fix static key imbalance in case of ingress/clsact_init error
  net: sched: fix clsact init error path
  ip_gre: fix wrong return value of erspan_rcv
  net: usb: qmi_wwan: add Telit ME910 PID 0x1101 support
  pkt_sched: Remove TC_RED_OFFLOADED from uapi
  net: sched: Move to new offload indication in RED
  net: sched: Add TCA_HW_OFFLOAD
  net: aquantia: Increment driver version
  net: aquantia: Fix typo in ethtool statistics names
  net: aquantia: Update hw counters on hw init
  net: aquantia: Improve link state and statistics check interval callback
  net: aquantia: Fill in multicast counter in ndev stats from hardware
  net: aquantia: Fill ndev stat couters from hardware
  net: aquantia: Extend stat counters to 64bit values
  net: aquantia: Fix hardware DMA stream overload on large MRRS
  net: aquantia: Fix actual speed capabilities reporting
  sock: free skb in skb_complete_tx_timestamp on error
  s390/qeth: update takeover IPs after configuration change
  s390/qeth: lock IP table while applying takeover changes
  ...

7 years agoMerge tag 'usb-4.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Fri, 15 Dec 2017 21:03:25 +0000 (13:03 -0800)]
Merge tag 'usb-4.15-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some USB fixes for 4.15-rc4.

  There is the usual handful gadget/dwc2/dwc3 fixes as always, for
  reported issues. But the most important things in here is the core fix
  from Alan Stern to resolve a nasty security bug (my first attempt is
  reverted, Alan's was much cleaner), as well as a number of usbip fixes
  from Shuah Khan to resolve those reported security issues.

  All of these have been in linux-next with no reported issues"

* tag 'usb-4.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: core: prevent malicious bNumInterfaces overflow
  Revert "USB: core: only clean up what we allocated"
  USB: core: only clean up what we allocated
  Revert "usb: gadget: allow to enable legacy drivers without USB_ETH"
  usb: gadget: webcam: fix V4L2 Kconfig dependency
  usb: dwc2: Fix TxFIFOn sizes and total TxFIFO size issues
  usb: dwc3: gadget: Fix PCM1 for ISOC EP with ep->mult less than 3
  usb: dwc3: of-simple: set dev_pm_ops
  usb: dwc3: of-simple: fix missing clk_disable_unprepare
  usb: dwc3: gadget: Wait longer for controller to end command processing
  usb: xhci: fix TDS for MTK xHCI1.1
  xhci: Don't add a virt_dev to the devs array before it's fully allocated
  usbip: fix stub_send_ret_submit() vulnerability to null transfer_buffer
  usbip: prevent vhci_hcd driver from leaking a socket pointer address
  usbip: fix stub_rx: harden CMD_SUBMIT path to handle malicious input
  usbip: fix stub_rx: get_pipe() to validate endpoint number
  tools/usbip: fixes potential (minor) "buffer overflow" (detected on recent gcc with -Werror)
  USB: uas and storage: Add US_FL_BROKEN_FUA for another JMicron JMS567 ID
  usb: musb: da8xx: fix babble condition handling

7 years agoMerge tag 'staging-4.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 15 Dec 2017 20:59:48 +0000 (12:59 -0800)]
Merge tag 'staging-4.15-rc4' of git://git./linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are some small staging driver fixes for 4.15-rc4.

  One patch for the ccree driver to prevent an unitialized value from
  being returned to a caller, and the other fixes a logic error in the
  pi433 driver"

* tag 'staging-4.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: pi433: Fixes issue with bit shift in rf69_get_modulation
  staging: ccree: Uninitialized return in ssi_ahash_import()

7 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Fri, 15 Dec 2017 20:56:23 +0000 (12:56 -0800)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio regression fixes from Michael Tsirkin:
 "Fixes two issues in the latest kernel"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio_mmio: fix devm cleanup
  ptr_ring: fix up after recent ptr_ring changes

7 years agoMerge tag 'for-4.15/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
Linus Torvalds [Fri, 15 Dec 2017 20:53:37 +0000 (12:53 -0800)]
Merge tag 'for-4.15/dm-fixes' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - fix a particularly nasty DM core bug in a 4.15 refcount_t conversion.

 - fix various targets to dm_register_target after module __init
   resources created; otherwise racing lvm2 commands could result in a
   NULL pointer during initialization of associated DM kernel module.

 - fix regression in bio-based DM multipath queue_if_no_path handling.

 - fix DM bufio's shrinker to reclaim more than one buffer per scan.

* tag 'for-4.15/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm bufio: fix shrinker scans when (nr_to_scan < retain_target)
  dm mpath: fix bio-based multipath queue_if_no_path handling
  dm: fix various targets to dm_register_target after module __init resources created
  dm table: fix regression from improper dm_dev_internal.count refcount_t conversion

7 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 15 Dec 2017 20:51:42 +0000 (12:51 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "The most important one is the bfa fix because it's easy to oops the
  kernel with this driver (this includes the commit that corrects the
  compiler warning in the original), a regression in the new timespec
  conversion in aacraid and a regression in the Fibre Channel ELS
  handling patch.

  The other three are a theoretical problem with termination in the
  vendor/host matching code and a use after free in lpfc.

  The additional patches are a fix for an I/O hang in the mq code under
  certain circumstances and a rare oops in some debugging code"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: core: Fix a scsi_show_rq() NULL pointer dereference
  scsi: MAINTAINERS: change FCoE list to linux-scsi
  scsi: libsas: fix length error in sas_smp_handler()
  scsi: bfa: fix type conversion warning
  scsi: core: run queue if SCSI device queue isn't ready and queue is idle
  scsi: scsi_devinfo: cleanly zero-pad devinfo strings
  scsi: scsi_devinfo: handle non-terminated strings
  scsi: bfa: fix access to bfad_im_port_s
  scsi: aacraid: address UBSAN warning regression
  scsi: libfc: fix ELS request handling
  scsi: lpfc: Use after free in lpfc_rq_buf_free()

7 years agoMerge tag 'mmc-v4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 15 Dec 2017 20:49:54 +0000 (12:49 -0800)]
Merge tag 'mmc-v4.15-rc2' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "A couple of MMC fixes:

   - fix use of uninitialized drv_typ variable

   - apply NO_CMD23 quirk to some specific SD cards to make them work"

* tag 'mmc-v4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: core: apply NO_CMD23 quirk to some specific cards
  mmc: core: properly init drv_type

7 years agoMerge tag 'ceph-for-4.15-rc4' of git://github.com/ceph/ceph-client
Linus Torvalds [Fri, 15 Dec 2017 20:48:27 +0000 (12:48 -0800)]
Merge tag 'ceph-for-4.15-rc4' of git://github.com/ceph/ceph-client

Pull ceph fix from Ilya Dryomov:
 "CephFS inode trimming fix from Zheng, marked for stable"

* tag 'ceph-for-4.15-rc4' of git://github.com/ceph/ceph-client:
  ceph: drop negative child dentries before try pruning inode's alias

7 years agoMerge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer...
Linus Torvalds [Fri, 15 Dec 2017 20:46:48 +0000 (12:46 -0800)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs

Pull overlayfs fixes from Miklos Szeredi:

 - fix incomplete syncing of filesystem

 - fix regression in readdir on ovl over 9p

 - only follow redirects when needed

 - misc fixes and cleanups

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: fix overlay: warning prefix
  ovl: Use PTR_ERR_OR_ZERO()
  ovl: Sync upper dirty data when syncing overlayfs
  ovl: update ctx->pos on impure dir iteration
  ovl: Pass ovl_get_nlink() parameters in right order
  ovl: don't follow redirects if redirect_dir=off

7 years agonet: qcom/emac: Reduce timeout for mdio read/write
Hemanth Puranik [Fri, 15 Dec 2017 14:35:58 +0000 (20:05 +0530)]
net: qcom/emac: Reduce timeout for mdio read/write

Currently mdio read/write takes around ~115us as the timeout
between status check is set to 100us.
By reducing the timeout to 1us mdio read/write takes ~15us to
complete. This improves the link up event response.

Signed-off-by: Hemanth Puranik <hpuranik@codeaurora.org>
Acked-by: Timur Tabi <timur@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 15 Dec 2017 20:44:49 +0000 (12:44 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "There are some significant fixes in here for FP state corruption,
  hardware access/dirty PTE corruption and an erratum workaround for the
  Falkor CPU.

  I'm hoping that things finally settle down now, but never say never...

  Summary:

   - Fix FPSIMD context switch regression introduced in -rc2

   - Fix ABI break with SVE CPUID register reporting

   - Fix use of uninitialised variable

   - Fixes to hardware access/dirty management and sanity checking

   - CPU erratum workaround for Falkor CPUs

   - Fix reporting of writeable+executable mappings

   - Fix signal reporting for RAS errors"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: fpsimd: Fix copying of FP state from signal frame into task struct
  arm64/sve: Report SVE to userspace via CPUID only if supported
  arm64: fix CONFIG_DEBUG_WX address reporting
  arm64: fault: avoid send SIGBUS two times
  arm64: hw_breakpoint: Use linux/uaccess.h instead of asm/uaccess.h
  arm64: Add software workaround for Falkor erratum 1041
  arm64: Define cputype macros for Falkor CPU
  arm64: mm: Fix false positives in set_pte_at access/dirty race detection
  arm64: mm: Fix pte_mkclean, pte_mkdirty semantics
  arm64: Initialise high_memory global variable earlier

7 years agonet: sched: fix static key imbalance in case of ingress/clsact_init error
Jiri Pirko [Fri, 15 Dec 2017 11:40:13 +0000 (12:40 +0100)]
net: sched: fix static key imbalance in case of ingress/clsact_init error

Move static key increments to the beginning of the init function
so they pair 1:1 with decrements in ingress/clsact_destroy,
which is called in case ingress/clsact_init fails.

Fixes: 6529eaba33f0 ("net: sched: introduce tcf block infractructure")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: sched: fix clsact init error path
Jiri Pirko [Fri, 15 Dec 2017 11:40:12 +0000 (12:40 +0100)]
net: sched: fix clsact init error path

Since in qdisc_create, the destroy op is called when init fails, we
don't do cleanup in init and leave it up to destroy.
This fixes use-after-free when trying to put already freed block.

Fixes: 6e40cf2d4dee ("net: sched: use extended variants of block_get/put in ingress and clsact qdiscs")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 15 Dec 2017 20:14:33 +0000 (12:14 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes:

   - fix the s2ram regression related to confusion around segment
     register restoration, plus related cleanups that make the code more
     robust

   - a guess-unwinder Kconfig dependency fix

   - an isoimage build target fix for certain tool chain combinations

   - instruction decoder opcode map fixes+updates, and the syncing of
     the kernel decoder headers to the objtool headers

   - a kmmio tracing fix

   - two 5-level paging related fixes

   - a topology enumeration fix on certain SMP systems"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Resync objtool's instruction decoder source code copy with the kernel's latest version
  x86/decoder: Fix and update the opcodes map
  x86/power: Make restore_processor_context() sane
  x86/power/32: Move SYSENTER MSR restoration to fix_processor_context()
  x86/power/64: Use struct desc_ptr for the IDT in struct saved_context
  x86/unwinder/guess: Prevent using CONFIG_UNWINDER_GUESS=y with CONFIG_STACKDEPOT=y
  x86/build: Don't verify mtools configuration file for isoimage
  x86/mm/kmmio: Fix mmiotrace for page unaligned addresses
  x86/boot/compressed/64: Print error if 5-level paging is not supported
  x86/boot/compressed/64: Detect and handle 5-level paging at boot-time
  x86/smpboot: Do not use smp_num_siblings in __max_logical_packages calculation

7 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 15 Dec 2017 19:44:59 +0000 (11:44 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Ingo Molnar:
 "Misc fixes:

   - Fix a S390 boot hang that was caused by the lock-break logic.
     Remove lock-break to begin with, as review suggested it was
     unreasonably fragile and our confidence in its continued good
     health is lower than our confidence in its removal.

   - Remove the lockdep cross-release checking code for now, because of
     unresolved false positive warnings. This should make lockdep work
     well everywhere again.

   - Get rid of the final (and single) ACCESS_ONCE() straggler and
     remove the API from v4.15.

   - Fix a liblockdep build warning"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/lib/lockdep: Add missing declaration of 'pr_cont()'
  checkpatch: Remove ACCESS_ONCE() warning
  compiler.h: Remove ACCESS_ONCE()
  tools/include: Remove ACCESS_ONCE()
  tools/perf: Convert ACCESS_ONCE() to READ_ONCE()
  locking/lockdep: Remove the cross-release locking checks
  locking/core: Remove break_lock field when CONFIG_GENERIC_LOCKBREAK=y
  locking/core: Fix deadlock during boot on systems with GENERIC_LOCKBREAK

7 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 15 Dec 2017 19:40:24 +0000 (11:40 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Two fixes: a crash fix for an ARM SoC platform, and kernel-doc
  warnings fixes"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/rt: Do not pull from current CPU if only one CPU to pull
  sched/core: Fix kernel-doc warnings after code movement

7 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 15 Dec 2017 19:36:20 +0000 (11:36 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf tooling fix from Ingo Molnar:
 "Synchronize kernel <-> tooling headers to resolve two build warnings
  in the perf build"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/headers: Synchronize kernel <-> tooling headers

7 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 15 Dec 2017 19:34:29 +0000 (11:34 -0800)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull early_ioremap fix from Ingo Molnar:
 "A boot hang fix when the EFI earlyprintk driver is enabled"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep

7 years agoMerge tag 'for-linus-4.15-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 15 Dec 2017 19:32:09 +0000 (11:32 -0800)]
Merge tag 'for-linus-4.15-rc4-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "Two minor fixes for running as Xen dom0:

   - when built as 32 bit kernel on large machines the Xen LAPIC
     emulation should report a rather modern LAPIC in order to support
     enough APIC-Ids

   - The Xen LAPIC emulation is needed for dom0 only, so build it only
     for kernels supporting to run as Xen dom0"

* tag 'for-linus-4.15-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: XEN_ACPI_PROCESSOR is Dom0-only
  x86/Xen: don't report ancient LAPIC version

7 years agoSUNRPC: Fix a race in the receive code path
Trond Myklebust [Fri, 15 Dec 2017 02:24:08 +0000 (21:24 -0500)]
SUNRPC: Fix a race in the receive code path

We must ensure that the call to rpc_sleep_on() in xprt_transmit() cannot
race with the call to xprt_complete_rqst().

Reported-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://bugzilla.linux-nfs.org/show_bug.cgi?id=317
Fixes: ce7c252a8c74 ("SUNRPC: Add a separate spinlock to protect..")
Cc: stable@vger.kernel.org # 4.14+
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
7 years agonfs: don't wait on commit in nfs_commit_inode() if there were no commit requests
Scott Mayhew [Fri, 8 Dec 2017 21:00:12 +0000 (16:00 -0500)]
nfs: don't wait on commit in nfs_commit_inode() if there were no commit requests

If there were no commit requests, then nfs_commit_inode() should not
wait on the commit or mark the inode dirty, otherwise the following
BUG_ON can be triggered:

[ 1917.130762] kernel BUG at fs/inode.c:578!
[ 1917.130766] Oops: Exception in kernel mode, sig: 5 [#1]
[ 1917.130768] SMP NR_CPUS=2048 NUMA pSeries
[ 1917.130772] Modules linked in: iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi blocklayoutdriver rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache sunrpc sg nx_crypto pseries_rng ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic crct10dif_common ibmvscsi scsi_transport_srp ibmveth scsi_tgt dm_mirror dm_region_hash dm_log dm_mod
[ 1917.130805] CPU: 2 PID: 14923 Comm: umount.nfs4 Tainted: G               ------------ T 3.10.0-768.el7.ppc64 #1
[ 1917.130810] task: c0000005ecd88040 ti: c00000004cea0000 task.ti: c00000004cea0000
[ 1917.130813] NIP: c000000000354178 LR: c000000000354160 CTR: c00000000012db80
[ 1917.130816] REGS: c00000004cea3720 TRAP: 0700   Tainted: G               ------------ T  (3.10.0-768.el7.ppc64)
[ 1917.130820] MSR: 8000000100029032 <SF,EE,ME,IR,DR,RI>  CR: 22002822  XER: 20000000
[ 1917.130828] CFAR: c00000000011f594 SOFTE: 1
GPR00: c000000000354160 c00000004cea39a0 c0000000014c4700 c0000000018cc750
GPR04: 000000000000c750 80c0000000000000 0600000000000000 04eeb76bea749a03
GPR08: 0000000000000034 c0000000018cc758 0000000000000001 d000000005e619e8
GPR12: c00000000012db80 c000000007b31200 0000000000000000 0000000000000000
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR24: 0000000000000000 c000000000dfc3ec 0000000000000000 c0000005eefc02c0
GPR28: d0000000079dbd50 c0000005b94a02c0 c0000005b94a0250 c0000005b94a01c8
[ 1917.130867] NIP [c000000000354178] .evict+0x1c8/0x350
[ 1917.130871] LR [c000000000354160] .evict+0x1b0/0x350
[ 1917.130873] Call Trace:
[ 1917.130876] [c00000004cea39a0] [c000000000354160] .evict+0x1b0/0x350 (unreliable)
[ 1917.130880] [c00000004cea3a30] [c0000000003558cc] .evict_inodes+0x13c/0x270
[ 1917.130884] [c00000004cea3af0] [c000000000327d20] .kill_anon_super+0x70/0x1e0
[ 1917.130896] [c00000004cea3b80] [d000000005e43e30] .nfs_kill_super+0x20/0x60 [nfs]
[ 1917.130900] [c00000004cea3c00] [c000000000328a20] .deactivate_locked_super+0xa0/0x1b0
[ 1917.130903] [c00000004cea3c80] [c00000000035ba54] .cleanup_mnt+0xd4/0x180
[ 1917.130907] [c00000004cea3d10] [c000000000119034] .task_work_run+0x114/0x150
[ 1917.130912] [c00000004cea3db0] [c00000000001ba6c] .do_notify_resume+0xcc/0x100
[ 1917.130916] [c00000004cea3e30] [c00000000000a7b0] .ret_from_except_lite+0x5c/0x60
[ 1917.130919] Instruction dump:
[ 1917.130921] 7fc3f378 486734b5 60000000 387f00a0 38800003 4bdcb365 60000000 e95f00a0
[ 1917.130927] 694a0060 7d4a0074 794ad182 694a0001 <0b0a0000892d02a4 2f890000 40de0134

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Cc: stable@vger.kernel.org # 4.5+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
7 years agoxprtrdma: Spread reply processing over more CPUs
Chuck Lever [Mon, 4 Dec 2017 19:04:04 +0000 (14:04 -0500)]
xprtrdma: Spread reply processing over more CPUs

Commit d8f532d20ee4 ("xprtrdma: Invoke rpcrdma_reply_handler
directly from RECV completion") introduced a performance regression
for NFS I/O small enough to not need memory registration. In multi-
threaded benchmarks that generate primarily small I/O requests,
IOPS throughput is reduced by nearly a third. This patch restores
the previous level of throughput.

Because workqueues are typically BOUND (in particular ib_comp_wq,
nfsiod_workqueue, and rpciod_workqueue), NFS/RDMA workloads tend
to aggregate on the CPU that is handling Receive completions.

The usual approach to addressing this problem is to create a QP
and CQ for each CPU, and then schedule transactions on the QP
for the CPU where you want the transaction to complete. The
transaction then does not require an extra context switch during
completion to end up on the same CPU where the transaction was
started.

This approach doesn't work for the Linux NFS/RDMA client because
currently the Linux NFS client does not support multiple connections
per client-server pair, and the RDMA core API does not make it
straightforward for ULPs to determine which CPU is responsible for
handling Receive completions for a CQ.

So for the moment, record the CPU number in the rpcrdma_req before
the transport sends each RPC Call. Then during Receive completion,
queue the RPC completion on that same CPU.

Additionally, move all RPC completion processing to the deferred
handler so that even RPCs with simple small replies complete on
the CPU that sent the corresponding RPC Call.

Fixes: d8f532d20ee4 ("xprtrdma: Invoke rpcrdma_reply_handler ...")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>