Claudio Foellmi [Wed, 4 Oct 2017 09:43:45 +0000 (11:43 +0200)]
i2c: omap: Trigger bus recovery in lockup case
A very conservative check for bus activity (to prevent interference
in multimaster setups) prevented the bus recovery methods from being
triggered in the case that SDA or SCL was stuck low.
This defeats the purpose of the recovery mechanism, which was introduced
for exactly this situation (a slave device keeping SDA pulled down).
Also added a check to make sure SDA is low before attempting recovery.
If SDA is not stuck low, recovery will not help, so we can skip it.
Note that bus lockups can persist across reboots. The only other options
are to reset or power cycle the offending slave device, and many i2c
slaves do not even have a reset pin.
If we see that one of the lines is low for the entire timeout duration,
we can actually be sure that there is no other master driving the bus.
It is therefore save for us to attempt a bus recovery.
Signed-off-by: Claudio Foellmi <claudio.foellmi@ergon.ch> Tested-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
[wsa: fixed one return code to -EBUSY] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This adds support for using the "sda" and "scl" GPIOs in
device tree instead of anonymously using index 0 and 1 of
the "gpios" property.
We add a helper function to retrieve the GPIO descriptors
and some explicit error handling since the probe may have
to be deferred. At least this happened to me when moving
to using named "sda" and "scl" lines (all of a sudden this
started to probe before the GPIO driver) so we need to
gracefully defer probe when we ge -ENOENT in the error
pointer.
dt-bindings: i2c: i2c-gpio: Add support for named gpios
The current i2c-gpio DT bindings use a single unnamed "gpios" property
to refer to the SDA and SCL signal lines by index. This is error-prone
for the casual DT writer and reviewer, as one has to look up the order
in the DT bindings.
Fix this by amending the DT bindings to use two separate named gpios
properties, and deprecate the old unnamed variant.
Take this opportunity to clearly deprecate the "i2c-gpio,sda-open-drain"
and "i2c-gpio,scl-open-drain" flags as well. The commit describes
in detail what these flags actually mean, and why they should not be
used in new device trees.
Cc: devicetree@vger.kernel.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
[Augmented to what I and Rob would like] Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
i2c: gpio: Augment all boardfiles to use open drain
We now handle the open drain mode internally in the I2C GPIO
driver, but we will get warnings from the gpiolib that we
override the default mode of the line so it becomes open
drain.
We can fix all in-kernel users by simply passing the right
flag along in the descriptor table, and we already touched
all of these files in the series so let's just tidy it up.
Cc: Steven Miao <realmz6@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Wu, Aaron <Aaron.Wu@analog.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The I2C GPIO bitbang driver currently emulates open drain
behaviour by implementing what the gpiolib already does:
not actively driving the line high, instead setting it to
input.
This makes no sense. Use the new facility in gpiolib to
request the lines enforced into open drain mode, and let
the open drain emulation already present in the gpiolib
kick in and handle this.
As a bonus: if the GPIO driver in the back-end actually
supports open drain in hardware using the .set_config()
callback, it will be utilized. That's correct: we never
used that hardware feature before, instead relying on
emulating open drain even if the GPIO controller could
actually handle this for us.
Users will sometimes get messages like this:
gpio-485 (?): enforced open drain please flag it properly
in DT/ACPI DSDT/board file
gpio-486 (?): enforced open drain please flag it properly
in DT/ACPI DSDT/board file
i2c-gpio gpio-i2c: using lines 485 (SDA) and 486 (SCL)
Which is completely proper: since the line is used as
open drain, it should actually be flagged properly with
e.g.
gpio: Make it possible for consumers to enforce open drain
Some busses, like I2C, strictly need to have the line handled
as open drain, i.e. not actively driven high. For this reason
the i2c-gpio.c bit-banged I2C driver is reimplementing open
drain handling outside of gpiolib.
This is not very optimal. Instead make it possible for a
consumer to explcitly express that the line must be handled
as open drain instead of allowing local hacks papering over
this issue.
The descriptor tables, whether DT, ACPI or board files, should
of course have flagged these lines as open drain. E.g.:
enum gpio_lookup_flags GPIO_OPEN_DRAIN for a board file, or
gpios = <&foo 42 GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN>; in a
device tree using <dt-bindings/gpio/gpio.h>
But more often than not, these descriptors are wrong. So
we need to make it possible for consumers to enforce this
open drain behaviour.
We now have two new enumerated GPIO descriptor config flags:
GPIOD_OUT_LOW_OPEN_DRAIN and GPIOD_OUT_HIGH_OPEN_DRAIN
that will set up the lined enforced as open drain as output
low or high, using open drain (if the driver supports it)
or using open drain emulation (setting the line as input
to drive it high) from the gpiolib core.
This converts the GPIO-based I2C-driver to using GPIO
descriptors instead of the old global numberspace-based
GPIO interface. We:
- Convert the driver to unconditionally grab two GPIOs
from the device by index 0 (SDA) and 1 (SCL) which
will work fine with device tree and descriptor tables.
The existing device trees will continue to work just
like before, but without any roundtrip through the
global numberspace.
- Brutally convert all boardfiles still passing global
GPIOs by registering descriptor tables associated with
the devices instead so this driver does not need to keep
supporting passing any GPIO numbers as platform data.
There is no stepwise approach as elegant as this, I
strongly prefer this big hammer over any antsteps for this
conversion. This way the old GPIO numbers go away and
NEVER COME BACK.
Special conversion for the different boards utilizing
I2C-GPIO:
- EP93xx (arch/arm/mach-ep93xx): pretty straight forward as
all boards were using the same two GPIO lines, just define
these two in a lookup table for "i2c-gpio" and register
these along with the device. None of them define any
other platform data so just pass NULL as platform data.
This platform selects GPIOLIB so all should be smooth.
The pins appear on a gpiochip for bank "G" as pins 1 (SDA)
and 0 (SCL).
- IXP4 (arch/arm/mach-ixp4): descriptor tables have to
be registered for each board separately. They all use
"IXP4XX_GPIO_CHIP" so it is pretty straight forward.
Most board define no other platform data than SCL/SDA
so they can drop the #include of <linux/i2c-gpio.h> and
assign NULL to platform data.
The "goramo_mlr" (Goramo Multilink Router) board is a bit
worrisome: it implements its own I2C bit-banging in the
board file, and optionally registers an I2C serial port,
but claims the same GPIO lines for itself in the board file.
This is not going to work: there will be competition for the
GPIO lines, so delete the optional extra I2C bus instead, no
I2C devices are registered on it anyway, there are just hints
that it may contain an EEPROM that may be accessed from
userspace. This needs to be fixed up properly by the serial
clock using I2C emulation so drop a note in the code.
- KS8695 board acs5k (arch/arm/mach-ks8695/board-acs5.c)
has some platform data in addition to the pins so it needs to
be kept around sans GPIO lines. Its GPIO chip is named
"KS8695" and the arch selects GPIOLIB.
- PXA boards (arch/arm/mach-pxa/*) use some of the platform
data so it needs to be preserved here. The viper board even
registers two GPIO I2Cs. The gpiochip is named "gpio-pxa" and
the arch selects GPIOLIB.
- SA1100 Simpad (arch/arm/mach-sa1100/simpad.c) defines a GPIO
I2C bus, and the arch selects GPIOLIB.
- Blackfin boards (arch/blackfin/bf533 etc) for these I assume
their I2C GPIOs refer to the local gpiochip defined in
arch/blackfin/kernel/bfin_gpio.c names "BFIN-GPIO".
The arch selects GPIOLIB. The boards get spiked with
IF_ENABLED(I2C_GPIO) but that is a side effect of it
being like that already (I would just have Kconfig select
I2C_GPIO and get rid of them all.) I also delete any
platform data set to 0 as it will get that value anyway
from static declartions of platform data.
- The MIPS selects GPIOLIB and the Alchemy machine is using
two local GPIO chips, one of them has a GPIO I2C. We need
to adjust the local offset from the global number space here.
The ATH79 has a proper GPIO driver in drivers/gpio/gpio-ath79.c
and AFAICT the chip is named "ath79-gpio" and the PB44
PCF857x expander spawns from this on GPIO 1 and 0. The latter
board only use the platform data to specify pins so it can be
cut altogether after this.
- The MFD Silicon Motion SM501 is a special case. It dynamically
spawns an I2C bus off the MFD using sm501_create_subdev().
We use an approach to dynamically create a machine descriptor
table and attach this to the "SM501-LOW" or "SM501-HIGH"
gpiochip. We use chip-local offsets to grab the right lines.
We can get rid of two local static inline helpers as part
of this refactoring.
Cc: Steven Miao <realmz6@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Ben Dooks <ben.dooks@codethink.co.uk> Cc: Heiko Schocher <hs@denx.de> Acked-by: Wu, Aaron <Aaron.Wu@analog.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Phil Reid [Thu, 24 Aug 2017 09:31:10 +0000 (17:31 +0800)]
power: supply: sbs-battery: move gpio present detect to sbs_get_property
Currently when a gpio is defined for battery presence it is only used in
the sbs_get_battery_presence_and_health function for 2 properties.
All other properties currently try to read data form the battery before
returning an error if not present. We should know in advance that no
data is going to returned.
As the driver tries multiple times to access a property, this prevents
a lot of smbus accesses, which had a significant effect on device boot-up.
As when the device is registered lots of property accesses are attempted
during boot.
If no gpio is used for presence detection no change in behaviour should
occur.
Signed-off-by: Phil Reid <preid@electromag.com.au> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Phil Reid [Thu, 24 Aug 2017 09:31:09 +0000 (17:31 +0800)]
power: supply: sbs-manager: Add alert callback and battery change notification
This adds smb alert support via the smbus_alert driver to generate
power_supply_changed notifications when either external power is
removed / applied or a battery inserted / removed.
Use the i2c alert callback to notify the attached battery driver that a
change has occurred.
Signed-off-by: Phil Reid <preid@electromag.com.au> Acked-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
power: Adds support for Smart Battery System Manager
This patch adds support for Smart Battery System Manager.
A SBSM is a device listening at I2C/SMBus address 0x0a and is capable of
communicating up to four I2C smart battery devices. All smart battery
devices are listening at address 0x0b, so the SBSM muliplexes between
them. The driver makes use of the I2C-Mux framework to allow smart
batteries to be bound via device tree, i.e. the sbs-battery driver.
Via sysfs interface the online state and charge type are presented. If
the driver is bound as ltc1760 (an implementation of a Dual Smart Battery
System Manager) the charge type can also be changed from trickle to fast.
Signed-off-by: Karl-Heinz Schneider <karl-heinz@schneider-inet.de> Signed-off-by: Phil Reid <preid@electromag.com.au> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Documentation: Add sbs-manager device tree node documentation
This patch adds device tree documentation for the sbs-manager
Signed-off-by: Karl-Heinz Schneider <karl-heinz@schneider-inet.de> Signed-off-by: Phil Reid <preid@electromag.com.au> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Phil Reid [Thu, 24 Aug 2017 09:31:06 +0000 (17:31 +0800)]
i2c: mux: pca954x: Return error if irq_create_mapping fails
irq_create_mapping can return an error, report error to log and return.
Cleanup will occur in the probe function when an error is returned.
Suggested-by: Peter Rosin <peda@axentia.se> Acked-by: Peter Rosin <peda@axentia.se> Signed-off-by: Phil Reid <preid@electromag.com.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Phil Reid [Thu, 24 Aug 2017 09:31:05 +0000 (17:31 +0800)]
i2c: mux: pca954x: call request irq after adding mux segments
The pca954x device do not have the ability to mask interrupts. For
i2c slave devices that also don't have masking ability (eg ltc1760
smbalert output) delay registering the irq until after the mux
segments have been configured. During the mux add_adaptor call the
core i2c system can register an smbalert handler which would then
be called immediately when the irq is registered. This smbalert
handler will then clear the pending irq.
This removes the need for the irq_mask / irq_unmask calls that were
original used to do this.
Signed-off-by: Phil Reid <preid@electromag.com.au> Acked-by: Peter Rosin <peda@axentia.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Phil Reid [Thu, 24 Aug 2017 09:31:02 +0000 (17:31 +0800)]
i2c: i2c-smbus: Move i2c_setup_smbus_alert from i2c-smbus to i2c-core-smbus
In preparation to adding of_i2c_setup_smbus_alert() move
i2c_setup_smbus_alert() to core module. of_i2c_setup_smbus_alert()
will call i2c_setup_smbus_alert() and this avoid module dependecy issues.
Signed-off-by: Phil Reid <preid@electromag.com.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Phil Reid [Thu, 24 Aug 2017 09:31:01 +0000 (17:31 +0800)]
i2c: i2c-smbus: Use threaded irq for smbalert
Prior to this commit the smbalert_irq was handling in the hard irq
context. This change switch to using a thread irq which avoids the need
for the work thread. Using threaded irq also removes the need for the
edge_triggered flag as the enabling / disabling of the hard irq for level
triggered interrupts will be handled by the irq core.
Without this change have an irq connected to something like an i2c gpio
resulted in a null ptr deferences. Specifically handle_nested_irq calls
the threaded irq handler.
There are currently 3 in tree drivers affected by this change.
i2c-parport driver calls i2c_handle_smbus_alert in a hard irq context.
This driver use edge trigger interrupts which skip the enable / disable
calls. But it still need to handle the smbus transaction on a thread. So
the work thread is kept for this driver.
i2c-parport-light & i2c-thunderx-pcidrv provide the irq number in the
setup which will result in the thread irq being used.
i2c-parport-light is edge trigger so the enable / disable call was
skipped as well.
i2c-thunderx-pcidrv is getting the edge / level trigger setting from of
data and was setting the flag as required. However the irq core should
handle this automatically.
Signed-off-by: Phil Reid <preid@electromag.com.au> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Claudio Foellmi [Thu, 5 Oct 2017 12:44:14 +0000 (14:44 +0200)]
i2c: generic recovery: check SCL before SDA
Move the check for a stuck SCL before the check for a high SDA.
This prevent false positives in the specific case that SDA is fine
and SCL is stuck, which previously returned 0.
Also check SDA again after the loop, if we can.
Together, these changes should lead to a lot more failed
recoveries being caught and returning error codes.
Signed-off-by: Claudio Foellmi <claudio.foellmi@ergon.ch> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Ed Blake [Sat, 28 Oct 2017 11:44:34 +0000 (12:44 +0100)]
i2c: img-scb: Add runtime PM
The i2c-img-scb driver already dynamically enables / disables clocks to
save power, but doesn't use the runtime PM framework. Convert the
driver to use runtime PM, so that dynamic clock management will be
disabled when runtime PM is disabled, and so that autosuspend can be
used to avoid unnecessarily disabling and re-enabling clocks repeatedly
during a sequence of transactions.
Signed-off-by: Ed Blake <ed.blake@sondrel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Kees Cook [Mon, 16 Oct 2017 23:27:29 +0000 (16:27 -0700)]
i2c/busses: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.
Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Hans de Goede [Wed, 11 Oct 2017 09:41:20 +0000 (11:41 +0200)]
i2c-cht-wc: Add device-properties for fusb302 integration
Add device-properties to make the bq24292i charger connected to
the bus get its input-current-limit from the fusb302 Type-C port
controller which is used on boards with the cht-wc PMIC,
as well as regulator_init_data for the 5V boost converter on
the bq24292i.
Since this means we now hook-up the bq24292i to the fusb302 Type-C port
controller add a check for the ACPI device which instantiates the fusb302.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Hans de Goede [Wed, 11 Oct 2017 09:41:19 +0000 (11:41 +0200)]
i2c: Allow overriding dev_name through board_info
For devices not instantiated through ACPI the i2c-client's device-name
gets set to <busnr>-<addr> by default, e.g. "0-0022" this means that
the device-name is dependent on the order in which the i2c-busses are
enumerated.
In some cases having a predictable constant device-name is desirable,
for example on non device-tree platforms the link between a regulator
and its consumers is specified by the platform code by setting
regulator_init_data.consumers. This array identifies the regulator's
consumers by dev_name and supply(-name). Which requires a constant
dev_name.
This commit adds a dev_name field to i2c_board_info allowing
platform code to set a contstant dev_name so that the device can
be identified by its dev_name in other platform code.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Mark Brown <broonie@kernel.org> (live at ELCE17) Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> (live at ELCE17) Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Linus Torvalds [Mon, 23 Oct 2017 10:37:16 +0000 (06:37 -0400)]
Merge tag 'staging-4.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO fixes from Greg KH:
"Here are a small number of patches to resolve some reported IIO and a
staging driver problem. Nothing major here, full details are in the
shortlog below.
All have been in linux-next with no reported issues"
* tag 'staging-4.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: bcm2835-audio: Fix memory corruption
iio: adc: at91-sama5d2_adc: fix probe error on missing trigger property
iio: adc: dln2-adc: fix build error
iio: dummy: events: Add missing break
staging: iio: ade7759: fix signed extension bug on shift of a u8
iio: pressure: zpa2326: Remove always-true check which confuses gcc
iio: proximity: as3935: noise detection + threshold changes
Linus Torvalds [Mon, 23 Oct 2017 10:35:01 +0000 (06:35 -0400)]
Merge tag 'char-misc-4.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are four small fixes for 4.14-rc6.
Three of them are binder driver fixes for reported issues, and the
last one is a hyperv driver bugfix. Nothing major, but good fixes to
get into 4.14-final.
All of these have been in linux-next with no reported issues"
* tag 'char-misc-4.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
android: binder: Fix null ptr dereference in debug msg
android: binder: Don't get mm from task
vmbus: hvsock: add proper sync for vmbus_hvsock_device_unregister()
binder: call poll_wait() unconditionally.
Linus Torvalds [Mon, 23 Oct 2017 10:33:05 +0000 (06:33 -0400)]
Merge tag 'usb-4.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY fixes from Greg KH:
"Here are a small number of USB and PHY driver fixes for 4.14-rc6
There is the usual musb and xhci fixes in here, as well as some needed
phy patches. Also is a nasty regression fix for usbfs that has started
to hit a lot of people using virtual machines.
All of these have been in linux-next with no reported problems"
* tag 'usb-4.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
usb: hub: Allow reset retry for USB2 devices on connect bounce
USB: core: fix out-of-bounds access bug in usb_get_bos_descriptor()
MAINTAINERS: fix git tree url for musb module
usb: quirks: add quirk for WORLDE MINI MIDI keyboard
usb: musb: sunxi: Explicitly release USB PHY on exit
usb: musb: Check for host-mode using is_host_active() on reset interrupt
usb: musb: musb_cppi41: Configure the number of channels for DA8xx
usb: musb: musb_cppi41: Fix cppi41_set_dma_mode() for DA8xx
usb: musb: musb_cppi41: Fix the address of teardown and autoreq registers
USB: musb: fix late external abort on suspend
USB: musb: fix session-bit runtime-PM quirk
usb: cdc_acm: Add quirk for Elatec TWN3
USB: devio: Revert "USB: devio: Don't corrupt user memory"
usb: xhci: Handle error condition in xhci_stop_device()
usb: xhci: Reset halted endpoint if trb is noop
xhci: Cleanup current_cmd in xhci_cleanup_command_queue()
xhci: Identify USB 3.1 capable hosts by their port protocol capability
USB: serial: metro-usb: add MS7820 device id
phy: rockchip-typec: Check for errors from tcphy_phy_init()
phy: rockchip-typec: Don't set the aux voltage swing to 400 mV
...
Linus Torvalds [Sun, 22 Oct 2017 20:19:12 +0000 (16:19 -0400)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fix from Dmitry Torokhov:
"A fix for a broken commit in the previous pull breaking automatic
module loading of input handlers, such ad evdev"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: do not use property bits when generating module alias
Dmitry Torokhov [Sun, 22 Oct 2017 18:42:29 +0000 (11:42 -0700)]
Input: do not use property bits when generating module alias
The commit 8724ecb07229 ("Input: allow matching device IDs on property
bits") started using property bits when generating module aliases for input
handlers, but did not adjust the generation of MODALIAS attribute on input
device uevents, breaking automatic module loading. Given that no handler
currently uses property bits in their module tables, let's revert this part
of the commit for now.
Linus Torvalds [Sun, 22 Oct 2017 10:58:23 +0000 (06:58 -0400)]
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A couple of fixes addressing the following issues:
- The last polishing for the TLB code, removing the last BUG_ON() and
the debug file along with tidying up the lazy TLB code.
- Prevent triple fault on 1st Gen. 486 caused by stupidly calling the
early IDT setup after the first function which causes a fault which
should be caught by the exception table.
- Limit the mmap of /dev/mem to valid addresses
- Prevent late microcode loading on Broadwell X
- Remove a redundant assignment in the cache info code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Limit mmap() of /dev/mem to valid physical addresses
x86/mm: Remove debug/x86/tlb_defer_switch_to_init_mm
x86/mm: Tidy up "x86/mm: Flush more aggressively in lazy TLB mode"
x86/mm/64: Remove the last VM_BUG_ON() from the TLB code
x86/microcode/intel: Disable late loading on model 79
x86/idt: Initialize early IDT before cr4_init_shadow()
x86/cpu/intel_cacheinfo: Remove redundant assignment to 'this_leaf'
Linus Torvalds [Sun, 22 Oct 2017 10:56:25 +0000 (06:56 -0400)]
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single fix to make the cs5535 clock event driver robust agaist
spurious interrupts"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clockevents/drivers/cs5535: Improve resilience to spurious interrupts
Linus Torvalds [Sun, 22 Oct 2017 10:54:42 +0000 (06:54 -0400)]
Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull smp/hotplug fix from Thomas Gleixner:
"The recent rework of the callback invocation missed to cleanup the
leftovers of the operation, so under certain circumstances a
subsequent CPU hotplug operation accesses stale data and crashes.
Clean it up."
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Reset node state after operation
Linus Torvalds [Sun, 22 Oct 2017 10:52:53 +0000 (06:52 -0400)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A series of fixes for perf tooling:
- Make xyarray return the X/Y size correctly which fixes a crash in
the exit code.
- Fix the libc path in test so it works not only on Debian/Ubuntu
correctly
- Check for eBPF file existance and output a useful error message
instead of failing to compile a non existant file
- Make sure perf_hpp_fmt is not longer references before freeing it
- Use list_del_init() in the histogram code to prevent a crash when
the already deleted element is deleted again
- Remove the leftovers of the removed '-l' option
- Add reviewer entries to the MAINTAINERS file"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf test shell trace+probe_libc_inet_pton.sh: Be compatible with Debian/Ubuntu
perf xyarray: Fix wrong processing when closing evsel fd
perf buildid-list: Fix crash when processing PERF_RECORD_NAMESPACE
perf record: Fix documentation for a inexistent option '-l'
perf tools: Add long time reviewers to MAINTAINERS
perf tools: Check wether the eBPF file exists in event parsing
perf hists: Add extra integrity checks to fmt_free()
perf hists: Fix crash in perf_hpp__reset_output_field()
Linus Torvalds [Sun, 22 Oct 2017 10:42:58 +0000 (06:42 -0400)]
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"A set of small fixes mostly in the irq drivers area:
- Make the tango irq chip work correctly, which requires a new
function in the generiq irq chip implementation
- A set of updates to the GIC-V3 ITS driver removing a bogus BUG_ON()
and parsing the VCPU table size correctly"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq: generic chip: remove irq_gc_mask_disable_reg_and_ack()
irqchip/tango: Use irq_gc_mask_disable_and_ack_set
genirq: generic chip: Add irq_gc_mask_disable_and_ack_set()
irqchip/gic-v3-its: Add missing changes to support 52bit physical address
irqchip/gic-v3-its: Fix the incorrect parsing of VCPU table size
irqchip/gic-v3-its: Fix the incorrect BUG_ON in its_init_vpe_domain()
DT: arm,gic-v3: Update the ITS size in the examples
Pull networking fixes from David Miller:
"A little more than usual this time around. Been travelling, so that is
part of it.
Anyways, here are the highlights:
1) Deal with memcontrol races wrt. listener dismantle, from Eric
Dumazet.
2) Handle page allocation failures properly in nfp driver, from Jaku
Kicinski.
3) Fix memory leaks in macsec, from Sabrina Dubroca.
4) Fix crashes in pppol2tp_session_ioctl(), from Guillaume Nault.
5) Several fixes in bnxt_en driver, including preventing potential
NVRAM parameter corruption from Michael Chan.
6) Fix for KRACK attacks in wireless, from Johannes Berg.
7) rtnetlink event generation fixes from Xin Long.
8) Deadlock in mlxsw driver, from Ido Schimmel.
9) Disallow arithmetic operations on context pointers in bpf, from
Jakub Kicinski.
10) Missing sock_owned_by_user() check in sctp_icmp_redirect(), from
Xin Long.
11) Only TCP is supported for sockmap, make that explicit with a
check, from John Fastabend.
12) Fix IP options state races in DCCP and TCP, from Eric Dumazet.
13) Fix panic in packet_getsockopt(), also from Eric Dumazet.
14) Add missing locked in hv_sock layer, from Dexuan Cui.
15) Various aquantia bug fixes, including several statistics handling
cures. From Igor Russkikh et al.
16) Fix arithmetic overflow in devmap code, from John Fastabend.
17) Fix busted socket memory accounting when we get a fault in the tcp
zero copy paths. From Willem de Bruijn.
18) Don't leave opt->tot_len uninitialized in ipv6, from Eric Dumazet"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (106 commits)
stmmac: Don't access tx_q->dirty_tx before netif_tx_lock
ipv6: flowlabel: do not leave opt->tot_len with garbage
of_mdio: Fix broken PHY IRQ in case of probe deferral
textsearch: fix typos in library helpers
rxrpc: Don't release call mutex on error pointer
net: stmmac: Prevent infinite loop in get_rx_timestamp_status()
net: stmmac: Fix stmmac_get_rx_hwtstamp()
net: stmmac: Add missing call to dev_kfree_skb()
mlxsw: spectrum_router: Configure TIGCR on init
mlxsw: reg: Add Tunneling IPinIP General Configuration Register
net: ethtool: remove error check for legacy setting transceiver type
soreuseport: fix initialization race
net: bridge: fix returning of vlan range op errors
sock: correct sk_wmem_queued accounting on efault in tcp zerocopy
bpf: add test cases to bpf selftests to cover all access tests
bpf: fix pattern matches for direct packet access
bpf: fix off by one for range markings with L{T, E} patterns
bpf: devmap fix arithmetic overflow in bitmap_size calculation
net: aquantia: Bad udp rate on default interrupt coalescing
net: aquantia: Enable coalescing management via ethtool interface
...
Bernd Edlinger [Sat, 21 Oct 2017 06:51:30 +0000 (06:51 +0000)]
stmmac: Don't access tx_q->dirty_tx before netif_tx_lock
This is the possible reason for different hard to reproduce
problems on my ARMv7-SMP test system.
The symptoms are in recent kernels imprecise external aborts,
and in older kernels various kinds of network stalls and
unexpected page allocation failures.
My testing indicates that the trouble started between v4.5 and v4.6
and prevails up to v4.14.
Using the dirty_tx before acquiring the spin lock is clearly
wrong and was first introduced with v4.6.
Fixes: e3ad57c96715 ("stmmac: review RX/TX ring management") Signed-off-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sat, 21 Oct 2017 19:26:23 +0000 (12:26 -0700)]
ipv6: flowlabel: do not leave opt->tot_len with garbage
When syzkaller team brought us a C repro for the crash [1] that
had been reported many times in the past, I finally could find
the root cause.
If FlowLabel info is merged by fl6_merge_options(), we leave
part of the opt_space storage provided by udp/raw/l2tp with random value
in opt_space.tot_len, unless a control message was provided at sendmsg()
time.
Then ip6_setup_cork() would use this random value to perform a kzalloc()
call. Undefined behavior and crashes.
Fix is to properly set tot_len in fl6_merge_options()
At the same time, we can also avoid consuming memory and cpu cycles
to clear it, if every option is copied via a kmemdup(). This is the
change in ip6_setup_cork().
Depending on whether the PHY driver will fall back to polling, Ethernet
may or may not work.
To fix this:
1. Switch of_mdiobus_register_phy() from irq_of_parse_and_map() to
of_irq_get().
Unlike the former, the latter returns -EPROBE_DEFER if the
interrupt controller is not yet available, so this condition can be
detected.
Other errors are handled the same as before, i.e. use the passed
mdio->irq[addr] as interrupt.
2. Propagate and handle errors from of_mdiobus_register_phy() and
of_mdiobus_register_device().
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: David S. Miller <davem@davemloft.net>
David Howells [Fri, 20 Oct 2017 16:01:22 +0000 (17:01 +0100)]
rxrpc: Don't release call mutex on error pointer
Don't release call mutex at the end of rxrpc_kernel_begin_call() if the
call pointer actually holds an error value.
Fixes: 540b1c48c37a ("rxrpc: Fix deadlock between call creation and sendmsg/recvmsg") Reported-by: Marc Dionne <marc.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jose Abreu [Fri, 20 Oct 2017 13:37:36 +0000 (14:37 +0100)]
net: stmmac: Prevent infinite loop in get_rx_timestamp_status()
Prevent infinite loop by correctly setting the loop condition to
break when i == 10.
Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Joao Pinto <jpinto@synopsys.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jose Abreu [Fri, 20 Oct 2017 13:37:35 +0000 (14:37 +0100)]
net: stmmac: Fix stmmac_get_rx_hwtstamp()
When using GMAC4 the valid timestamp is from CTX next desc but
we are passing the previous desc to get_rx_timestamp_status()
callback.
Fix this and while at it rework a little bit the function logic.
Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Joao Pinto <jpinto@synopsys.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jose Abreu [Fri, 20 Oct 2017 13:37:34 +0000 (14:37 +0100)]
net: stmmac: Add missing call to dev_kfree_skb()
When RX HW timestamp is enabled and a frame is discarded we are
not freeing the skb but instead only setting to NULL the entry.
Add a call to dev_kfree_skb_any() so that skb entry is correctly
freed.
Signed-off-by: Jose Abreu <joabreu@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Cc: Joao Pinto <jpinto@synopsys.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 22 Oct 2017 01:46:39 +0000 (21:46 -0400)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
- joydev now implements a blacklist to avoid creating joystick nodes
for accelerometers found in composite devices such as PlaStation
controllers
- assorted driver fixes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: ims-psu - check if CDC union descriptor is sane
Input: joydev - blacklist ds3/ds4/udraw motion sensors
Input: allow matching device IDs on property bits
Input: factor out and export input_device_id matching code
Input: goodix - poll the 'buffer status' bit before reading data
Input: axp20x-pek - fix module not auto-loading for axp221 pek
Input: tca8418 - enable interrupt after it has been requested
Input: stmfts - fix setting ABS_MT_POSITION_* maximum size
Input: ti_am335x_tsc - fix incorrect step config for 5 wire touchscreen
Input: synaptics - disable kernel tracking on SMBus devices
Linus Torvalds [Sun, 22 Oct 2017 01:39:18 +0000 (21:39 -0400)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"MS_I_VERSION fixes - Mimi's fix + missing bits picked from Matthew
(his patch contained a duplicate of the fs/namespace.c fix as well,
but by that point the original fix had already been applied)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
Convert fs/*/* to SB_I_VERSION
vfs: fix mounting a filesystem with i_version
David S. Miller [Sun, 22 Oct 2017 01:19:03 +0000 (02:19 +0100)]
Merge branch 'mlxsw-fixes'
Jiri Pirko says:
====================
mlxsw: spectrum: Configure TTL of "inherit" for offloaded tunnels
Petr says:
Currently mlxsw only offloads tunnels that are configured with TTL of "inherit"
(which is the default). However, Spectrum defaults to 255 and the driver
neglects to change the configuration. Thus the tunnel packets from offloaded
tunnels always have TTL of 255, even though tunnels with explicit TTL of 255 are
never actually offloaded.
To fix this, introduce support for TIGCR, the register that keeps the related
bits of global tunnel configuration, and use it on first offload to properly
configure inheritance of TTL of tunnel packets from overlay packets.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Fri, 20 Oct 2017 07:16:16 +0000 (09:16 +0200)]
mlxsw: spectrum_router: Configure TIGCR on init
Spectrum tunnels do not default to ttl of "inherit" like the Linux ones
do. Configure TIGCR on router init so that the TTL of tunnel packets is
copied from the overlay packets.
Fixes: ee954d1a91b2 ("mlxsw: spectrum_router: Support GRE tunnels") Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Fri, 20 Oct 2017 07:16:15 +0000 (09:16 +0200)]
mlxsw: reg: Add Tunneling IPinIP General Configuration Register
The TIGCR register is used for setting up the IPinIP Tunnel
configuration.
Fixes: ee954d1a91b2 ("mlxsw: spectrum_router: Support GRE tunnels") Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Niklas Söderlund [Thu, 19 Oct 2017 23:32:08 +0000 (01:32 +0200)]
net: ethtool: remove error check for legacy setting transceiver type
Commit 9cab88726929605 ("net: ethtool: Add back transceiver type")
restores the transceiver type to struct ethtool_link_settings and
convert_link_ksettings_to_legacy_settings() but forgets to remove the
error check for the same in convert_legacy_settings_to_link_ksettings().
This prevents older versions of ethtool to change link settings.
# ethtool --version
ethtool version 3.16
# ethtool -s eth0 autoneg on speed 100 duplex full
Cannot set new settings: Invalid argument
not setting speed
not setting duplex
not setting autoneg
While newer versions of ethtool works.
# ethtool --version
ethtool version 4.10
# ethtool -s eth0 autoneg on speed 100 duplex full
[ 57.703268] sh-eth ee700000.ethernet eth0: Link is Down
[ 59.618227] sh-eth ee700000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
Fixes: 19cab88726929605 ("net: ethtool: Add back transceiver type") Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reported-by: Renjith R V <renjith.rv@quest-global.com> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: David S. Miller <davem@davemloft.net>
Craig Gallek [Thu, 19 Oct 2017 19:00:29 +0000 (15:00 -0400)]
soreuseport: fix initialization race
Syzkaller stumbled upon a way to trigger
WARNING: CPU: 1 PID: 13881 at net/core/sock_reuseport.c:41
reuseport_alloc+0x306/0x3b0 net/core/sock_reuseport.c:39
There are two initialization paths for the sock_reuseport structure in a
socket: Through the udp/tcp bind paths of SO_REUSEPORT sockets or through
SO_ATTACH_REUSEPORT_[CE]BPF before bind. The existing implementation
assumedthat the socket lock protected both of these paths when it actually
only protects the SO_ATTACH_REUSEPORT path. Syzkaller triggered this
double allocation by running these paths concurrently.
This patch moves the check for double allocation into the reuseport_alloc
function which is protected by a global spin lock.
Fixes: e32ea7e74727 ("soreuseport: fast reuseport UDP socket selection") Fixes: c125e80b8868 ("soreuseport: fast reuseport TCP socket selection") Signed-off-by: Craig Gallek <kraig@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: bridge: fix returning of vlan range op errors
When vlan tunnels were introduced, vlan range errors got silently
dropped and instead 0 was returned always. Restore the previous
behaviour and return errors to user-space.
Fixes: efa5356b0d97 ("bridge: per vlan dst_metadata netlink support") Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Thu, 19 Oct 2017 16:40:39 +0000 (12:40 -0400)]
sock: correct sk_wmem_queued accounting on efault in tcp zerocopy
Syzkaller hits WARN_ON(sk->sk_wmem_queued) in sk_stream_kill_queues
after triggering an EFAULT in __zerocopy_sg_from_iter.
On this error, skb_zerocopy_stream_iter resets the skb to its state
before the operation with __pskb_trim. It cannot kfree_skb like
datagram callers, as the skb may have data from a previous send call.
__pskb_trim calls skb_condense for unowned skbs, which adjusts their
truesize. These tcp skbuffs are owned and their truesize must add up
to sk_wmem_queued. But they match because their skb->sk is NULL until
tcp_transmit_skb.
Temporarily set skb->sk when calling __pskb_trim to signal that the
skbuffs are owned and avoid the skb_condense path.
Fixes: 52267790ef52 ("sock: add MSG_ZEROCOPY") Signed-off-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 21 Oct 2017 23:56:10 +0000 (00:56 +0100)]
Merge branch 'bpf-range-marking-fixes'
Daniel Borkmann says:
====================
Two BPF fixes for range marking
The set contains two fixes for direct packet access range
markings and test cases for all direct packet access patterns
that the verifier matches on.
They are targeted for net tree, note that once net gets merged
into net-next, there will be a minor merge conflict due to
signature change of the function find_good_pkt_pointers() as
well as data_meta patterns present in net-next tree. You can
just add bool false to the data_meta patterns and I will
follow-up with properly converting the patterns for data_meta
in a similar way.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sat, 21 Oct 2017 00:34:23 +0000 (02:34 +0200)]
bpf: add test cases to bpf selftests to cover all access tests
Lets add test cases to cover really all possible direct packet
access tests for good/bad access cases so we keep tracking them.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sat, 21 Oct 2017 00:34:22 +0000 (02:34 +0200)]
bpf: fix pattern matches for direct packet access
Alexander had a test program with direct packet access, where
the access test was in the form of data + X > data_end. In an
unrelated change to the program LLVM decided to swap the branches
and emitted code for the test in form of data + X <= data_end.
We hadn't seen these being generated previously, thus verifier
would reject the program. Therefore, fix up the verifier to
detect all test cases, so we don't run into such issues in the
future.
Fixes: b4e432f1000a ("bpf: enable BPF_J{LT, LE, SLT, SLE} opcodes in verifier") Reported-by: Alexander Alemayhu <alexander@alemayhu.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sat, 21 Oct 2017 00:34:21 +0000 (02:34 +0200)]
bpf: fix off by one for range markings with L{T, E} patterns
During review I noticed that the current logic for direct packet
access marking in check_cond_jmp_op() has an off by one for the
upper right range border when marking in find_good_pkt_pointers()
with BPF_JLT and BPF_JLE. It's not really harmful given access
up to pkt_end is always safe, but we should nevertheless correct
the range marking before it becomes ABI. If pkt_data' denotes a
pkt_data derived pointer (pkt_data + X), then for pkt_data' < pkt_end
in the true branch as well as for pkt_end <= pkt_data' in the false
branch we mark the range with X although it should really be X - 1
in these cases. For example, X could be pkt_end - pkt_data, then
when testing for pkt_data' < pkt_end the verifier simulation cannot
deduce that a byte load of pkt_data' - 1 would succeed in this
branch.
Fixes: b4e432f1000a ("bpf: enable BPF_J{LT, LE, SLT, SLE} opcodes in verifier") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
John Fastabend [Thu, 19 Oct 2017 16:03:52 +0000 (09:03 -0700)]
bpf: devmap fix arithmetic overflow in bitmap_size calculation
An integer overflow is possible in dev_map_bitmap_size() when
calculating the BITS_TO_LONG logic which becomes, after macro
replacement,
(((n) + (d) - 1)/ (d))
where 'n' is a __u32 and 'd' is (8 * sizeof(long)). To avoid
overflow cast to u64 before arithmetic.
Reported-by: Richard Weinberger <richard@nod.at> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sat, 21 Oct 2017 18:32:46 +0000 (14:32 -0400)]
Merge tag 'dmaengine-fix-4.14-rc6' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fix from Vinod Koul:
"Late fix for altera driver which fixes the locking in driver"
* tag 'dmaengine-fix-4.14-rc6' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: altera: Use IRQ-safe spinlock calls in the error paths as well
Thomas Gleixner [Sat, 21 Oct 2017 14:06:52 +0000 (16:06 +0200)]
cpu/hotplug: Reset node state after operation
The recent rework of the cpu hotplug internals changed the usage of the per
cpu state->node field, but missed to clean it up after usage.
So subsequent hotplug operations use the stale pointer from a previous
operation and hand it into the callback functions. The callbacks then
dereference a pointer which either belongs to a different facility or
points to freed and potentially reused memory. In either case data
corruption and crashes are the obvious consequence.
Reset the node and the last pointers in the per cpu state to NULL after the
operation which set them has completed.
Fixes: 96abb968549c ("smp/hotplug: Allow external multi-instance rollback") Reported-by: Tvrtko Ursulin <tursulin@ursulin.net> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1710211606130.3213@nanos
Igor Russkikh [Thu, 19 Oct 2017 15:23:59 +0000 (18:23 +0300)]
net: aquantia: Bad udp rate on default interrupt coalescing
Default Tx rates cause very long ISR delays on Tx.
0xff is 510us delay, giving only ~ 2000 interrupts per seconds for
Tx rings cleanup. With these settings udp tx rate was never higher than
~800Mbps on a single stream. Changing min delay to 0xF makes it
way better with ~6Gbps
TCP stream performance is almost unaffected by this change, since LSO
optimizations play important role.
CPU load is affected insignificantly by this change.
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com> Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Igor Russkikh [Thu, 19 Oct 2017 15:23:58 +0000 (18:23 +0300)]
net: aquantia: Enable coalescing management via ethtool interface
Aquantia NIC allows both TX and RX interrupt throttle rate (ITR)
management, but this was used in a very limited way via predefined
values. This patch allows to setup ITR default values via module
command line arguments and via standard ethtool coalescing settings.
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com> Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Igor Russkikh [Thu, 19 Oct 2017 15:23:57 +0000 (18:23 +0300)]
net: aquantia: mmio unmap was not performed on driver removal
That may lead to mmio resource leakage.
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com> Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Igor Russkikh [Thu, 19 Oct 2017 15:23:56 +0000 (18:23 +0300)]
net: aquantia: Limit number of MSIX irqs to the number of cpus
There is no much practical use from having MSIX vectors more that number
of cpus, thus cap this first with preconfigured limit, then with number
of cpus online.
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com> Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Igor Russkikh [Thu, 19 Oct 2017 15:23:55 +0000 (18:23 +0300)]
net: aquantia: Fixed transient link up/down/up notification
When doing ifconfig down/up, driver did not reported carrier_off neither
in nic_stop nor in nic_start. That caused link to be visible as "up"
during couple of seconds immediately after "ifconfig up".
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com> Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Igor Russkikh [Thu, 19 Oct 2017 15:23:54 +0000 (18:23 +0300)]
net: aquantia: Add queue restarts stats counter
Queue stat strings are cleaned up, duplicate stat name strings removed,
queue restarts counter added
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com> Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Igor Russkikh [Thu, 19 Oct 2017 15:23:53 +0000 (18:23 +0300)]
net: aquantia: Reset nic statistics on interface up/down
Internal statistics system on chip never gets reset until hardware
reboot. This is quite inconvenient in terms of ethtool statistics usage.
This patch implements incremental statistics update inside of
service callback.
Upon nic initialization, first request is done to fetch
initial stat data, current collected stat data gets cleared.
Internal statistics mailbox readout is improved to save space and
increase readability
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com> Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Sherry Yang [Sat, 21 Oct 2017 00:58:58 +0000 (20:58 -0400)]
android: binder: Don't get mm from task
Use binder_alloc struct's mm_struct rather than getting
a reference to the mm struct through get_task_mm to
avoid a potential deadlock between lru lock, task lock and
dentry lock, since a thread can be holding the task lock
and the dentry lock while trying to acquire the lru lock.
Matteo Croce [Thu, 19 Oct 2017 12:22:17 +0000 (14:22 +0200)]
udp: make some messages more descriptive
In the UDP code there are two leftover error messages with very few meaning.
Replace them with a more descriptive error message as some users
reported them as "strange network error".
Signed-off-by: Matteo Croce <mcroce@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Stefano Brivio [Thu, 19 Oct 2017 11:31:28 +0000 (13:31 +0200)]
geneve: Fix function matching VNI and tunnel ID on big-endian
On big-endian machines, functions converting between tunnel ID
and VNI use the three LSBs of tunnel ID storage to map VNI.
The comparison function eq_tun_id_and_vni(), on the other hand,
attempted to map the VNI from the three MSBs. Fix it by using
the same check implemented on LE, which maps VNI from the three
LSBs of tunnel ID.
Fixes: 2e0b26e10352 ("geneve: Optimize geneve device lookup.") Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Jakub Sitnicki <jkbs@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 21 Oct 2017 01:30:31 +0000 (02:30 +0100)]
Merge tag 'linux-can-fixes-for-4.14-20171019' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2017-10-19
this is a pull request of 11 patches for the upcoming 4.14 release.
There are 6 patches by ZHU Yi for the flexcan driver, that work around
the CAN error handling state transition problems found in various
incarnations of the flexcan IP core.
The patch by Colin Ian King fixes a potential NULL pointer deref in the
CAN broad cast manager (bcm). One patch by me replaces a direct deref of a RCU
protected pointer by rcu_access_pointer. My second patch adds missing
OOM error handling in af_can. A patch by Stefan Mätje for the esd_usb2
driver fixes the dlc in received RTR frames. And the last patch is by
Wolfgang Grandegger, it fixes a busy loop in the gs_usb driver in case
it runs out of TX contexts.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Dexuan Cui [Thu, 19 Oct 2017 03:33:14 +0000 (03:33 +0000)]
hv_sock: add locking in the open/close/release code paths
Without the patch, when hvs_open_connection() hasn't completely established
a connection (e.g. it has changed sk->sk_state to SS_CONNECTED, but hasn't
inserted the sock into the connected queue), vsock_stream_connect() may see
the sk_state change and return the connection to the userspace, and next
when the userspace closes the connection quickly, hvs_release() may not see
the connection in the connected queue; finally hvs_open_connection()
inserts the connection into the queue, but we won't be able to purge the
connection for ever.
Signed-off-by: Dexuan Cui <decui@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Cc: Cathy Avery <cavery@redhat.com> Cc: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: Marcelo Cerri <marcelo.cerri@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Gavin Shan [Thu, 19 Oct 2017 02:43:08 +0000 (13:43 +1100)]
net/ncsi: Enforce failover on link monitor timeout
The NCSI channel has been configured to provide service if its link
monitor timer is enabled, regardless of its state (inactive or active).
So the timeout event on the link monitor indicates the out-of-service
on that channel, for which a failover is needed.
This sets NCSI_DEV_RESHUFFLE flag to enforce failover on link monitor
timeout, regardless the channel's original state (inactive or active).
Also, the link is put into "down" state to give the failing channel
lowest priority when selecting for the active channel. The state of
failing channel should be set to active in order for deinitialization
and failover to be done.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Gavin Shan [Thu, 19 Oct 2017 02:43:07 +0000 (13:43 +1100)]
net/ncsi: Disable HWA mode when no channels are found
When there are no NCSI channels probed, HWA (Hardware Arbitration)
mode is enabled. It's not correct because HWA depends on the fact:
NCSI channels exist and all of them support HWA mode. This disables
HWA when no channels are probed.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net/ncsi: Stop monitor if channel times out or is inactive
ncsi_channel_monitor() misses stopping the channel monitor in several
places that it should, causing a WARN_ON_ONCE() to trigger when the
monitor is re-started later, eg:
[ 459.040000] WARNING: CPU: 0 PID: 1093 at net/ncsi/ncsi-manage.c:269 ncsi_start_channel_monitor+0x7c/0x90
[ 459.040000] CPU: 0 PID: 1093 Comm: kworker/0:3 Not tainted 4.10.17-gaca2fdd #140
[ 459.040000] Hardware name: ASpeed SoC
[ 459.040000] Workqueue: events ncsi_dev_work
[ 459.040000] [<80010094>] (unwind_backtrace) from [<8000d950>] (show_stack+0x20/0x24)
[ 459.040000] [<8000d950>] (show_stack) from [<801dbf70>] (dump_stack+0x20/0x28)
[ 459.040000] [<801dbf70>] (dump_stack) from [<80018d7c>] (__warn+0xe0/0x108)
[ 459.040000] [<80018d7c>] (__warn) from [<80018e70>] (warn_slowpath_null+0x30/0x38)
[ 459.040000] [<80018e70>] (warn_slowpath_null) from [<803f6a08>] (ncsi_start_channel_monitor+0x7c/0x90)
[ 459.040000] [<803f6a08>] (ncsi_start_channel_monitor) from [<803f7664>] (ncsi_configure_channel+0xdc/0x5fc)
[ 459.040000] [<803f7664>] (ncsi_configure_channel) from [<803f8160>] (ncsi_dev_work+0xac/0x474)
[ 459.040000] [<803f8160>] (ncsi_dev_work) from [<8002d244>] (process_one_work+0x1e0/0x450)
[ 459.040000] [<8002d244>] (process_one_work) from [<8002d510>] (worker_thread+0x5c/0x570)
[ 459.040000] [<8002d510>] (worker_thread) from [<80033614>] (kthread+0x124/0x164)
[ 459.040000] [<80033614>] (kthread) from [<8000a5e8>] (ret_from_fork+0x14/0x2c)
This also updates the monitor instead of just returning if
ncsi_xmit_cmd() fails to send the get-link-status command so that the
monitor properly times out.
Fixes: e6f44ed6d04d3 "net/ncsi: Package and channel management" Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Correct the value of the HNCDSC AEN packet. Fixes: 7a82ecf4cfb85 "net/ncsi: NCSI AEN packet handler" Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 18 Oct 2017 23:14:52 +0000 (16:14 -0700)]
packet: avoid panic in packet_getsockopt()
syzkaller got crashes in packet_getsockopt() processing
PACKET_ROLLOVER_STATS command while another thread was managing
to change po->rollover
Using RCU will fix this bug. We might later add proper RCU annotations
for sparse sake.
In v2: I replaced kfree(rollover) in fanout_add() to kfree_rcu()
variant, as spotted by John.
Fixes: a9b6391814d5 ("packet: rollover statistics") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Willem de Bruijn <willemb@google.com> Cc: John Sperbeck <jsperbeck@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Fri, 20 Oct 2017 16:04:13 +0000 (09:04 -0700)]
tcp/dccp: fix ireq->opt races
syzkaller found another bug in DCCP/TCP stacks [1]
For the reasons explained in commit ce1050089c96 ("tcp/dccp: fix
ireq->pktopts race"), we need to make sure we do not access
ireq->opt unless we own the request sock.
Note the opt field is renamed to ireq_opt to ease grep games.
[1]
BUG: KASAN: use-after-free in ip_queue_xmit+0x1687/0x18e0 net/ipv4/ip_output.c:474
Read of size 1 at addr ffff8801c951039c by task syz-executor5/3295
Fixes: e994b2f0fb92 ("tcp: do not lock listener to process SYN packets") Fixes: 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Fri, 20 Oct 2017 20:24:48 +0000 (22:24 +0200)]
Merge tag 'sunxi-fixes-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes
Pull "Allwinner fixes for 4.14" from Maxime Ripard:
Two fixes, one for the A31 DRM binding, and one for a missing regulator on
the pine MMC controller.
* tag 'sunxi-fixes-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
ARM: dts: sun6i: Fix endpoint IDs in second display pipeline
arm64: allwinner: a64: pine64: Use dcdc1 regulator for mmc0
projects / mirror_ubuntu-bionic-kernel.git / log