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798,688 commits

Author SHA1 Message Date
Michal Wajdeczko
645ff9e371 drm/i915: Inject load failure inside intel_engines_init_mmio
We need extra load failure point to better test error path in
i915_driver_init_mmio.

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20181011130008.24640-2-michal.wajdeczko@intel.com
2018-10-11 21:06:52 +01:00
Michal Wajdeczko
c5b083a1a1 drm/i915: Fix i915_driver_init_mmio error path
In case of the error we missed to call i915_mmio_cleanup
that matches earlier call to i915_mmio_setup.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20181011130008.24640-1-michal.wajdeczko@intel.com
2018-10-11 21:06:42 +01:00
Kai-Heng Feng
ce9d58d3ea HID: usbhid: Add quirk for Redragon/Dragonrise Seymur 2
Redragon Seymur 2 stops working since commit 190d7f02ce ("HID: input:
do not increment usages when a duplicate is found").

Use quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE suggested by the commit
can solve the issue.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=200995
BugLink: https://bugs.launchpad.net/bugs/1793846
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-10-11 22:03:13 +02:00
Baolin Wang
8dbac65f5c leds: sc27xx: Add pattern_set/clear interfaces for LED controller
This patch implements the 'pattern_set'and 'pattern_clear'
interfaces to support SC27XX LED breathing mode.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Acked-by: Pavel Machek <pavel@ucw.c>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2018-10-11 21:59:11 +02:00
Baolin Wang
5fd752b6b3 leds: core: Introduce LED pattern trigger
This patch adds a new LED trigger that LED device can configure
to employ software or hardware pattern engine.

Consumers can write 'pattern' file to enable the software pattern
which alters the brightness for the specified duration with one
software timer.

Moreover consumers can write 'hw_pattern' file to enable the hardware
pattern for some LED controllers which can autonomously control
brightness over time, according to some preprogrammed hardware
patterns.

Signed-off-by: Raphael Teysseyre <rteysseyre@gmail.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2018-10-11 21:55:58 +02:00
Rob Herring
d81cc4a8e4 dt-bindings: arm: zte: Move sysctrl bindings to their own doc
In preparation to convert board-level bindings to json-schema, move
various misc SoC bindings out to their own file.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Jun Nie <jun.nie@linaro.org>
Cc: Baoyou Xie <baoyou.xie@linaro.org>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2018-10-11 14:52:01 -05:00
Rob Herring
157b4129de dt-bindings: arm: fsl: Move DCFG and SCFG bindings to their own docs
In preparation to convert board-level bindings to json-schema, move
various misc SoC bindings out to their own file.

Acked-by: Shawn Guo <shawnguo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
2018-10-11 14:48:56 -05:00
Rob Herring
79fbf76dc3 dt-bindings: arm: atmel: Move various sys registers out of SoC binding doc
In preparation to convert board-level bindings to json-schema, move
various misc SoC bindings out to their own file.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
2018-10-11 14:48:33 -05:00
Bjorn Helgaas
4c243716e7 PCI/IOV: Remove unnecessary include of <linux/pci-ats.h>
iov.c uses nothing declared in <linux/pci-ats.h>, so remove the include of
it.  No functional change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2018-10-11 14:35:12 -05:00
Josef Bacik
5e65a20341 blk-wbt: wake up all when we scale up, not down
Tetsuo brought to my attention that I screwed up the scale_up/scale_down
helpers when I factored out the rq-qos code.  We need to wake up all the
waiters when we add slots for requests to make, not when we shrink the
slots.  Otherwise we'll end up things waiting forever.  This was a
mistake and simply puts everything back the way it was.

cc: stable@vger.kernel.org
Fixes: a79050434b ("blk-rq-qos: refactor out common elements of blk-wbt")
eported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-10-11 13:31:28 -06:00
Jakub Kicinski
96de25060d nfp: replace long license headers with SPDX
Replace the repeated license text with SDPX identifiers.
While at it bump the Copyright dates for files we touched
this year.

Signed-off-by: Edwin Peer <edwin.peer@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Nic Viljoen <nick.viljoen@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 12:16:21 -07:00
Sebastian Andrzej Siewior
052858663d net: phy: sfp: remove sfp_mutex's definition
The sfp_mutex variable is defined but never used in this file. Not even
in the commit that introduced that variable.

Remove sfp_mutex, it has no purpose.

Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 12:10:06 -07:00
Maciej S. Szmigiero
511cfd580f r8169: set RX_MULTI_EN bit in RxConfig for 8168F-family chips
It has been reported that since
commit 05212ba813 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices")
at least RTL_GIGA_MAC_VER_38 NICs work erratically after a resume from
suspend.
The problem has been traced to a missing RX_MULTI_EN bit in the RxConfig
register.
We already set this bit for RTL_GIGA_MAC_VER_35 NICs of the same 8168F
chip family so let's do it also for its other siblings: RTL_GIGA_MAC_VER_36
and RTL_GIGA_MAC_VER_38.

Curiously, the NIC seems to work fine after a system boot without having
this bit set as long as the system isn't suspended and resumed.

Fixes: 05212ba813 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices")
Reported-by: Chris Clayton <chris2553@googlemail.com>
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Tested-by: Chris Clayton <chris2553@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 12:08:04 -07:00
Ben Dooks
8cc1da96d1 net: cdc_ncm: use tasklet_init() for tasklet_struct init
The tasklet initialisation would be better done by tasklet_init()
instead of assuming all the fields are in an ok state by default.

This does not fix any actual know bug.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 12:06:06 -07:00
Ilias Apalodimas
2a1e89df78 net: socionext: clear rx irq correctly
commit 63ae7949e9 ("net: socionext: Use descriptor info instead of MMIO reads on Rx")
removed constant mmio reads from the driver and started using a descriptor
field to check if packet should be processed.
This lead the napi rx handler being constantly called while no packets
needed processing and ksoftirq getting 100% cpu usage. Issue one mmio read
to clear the irq correcty after processing packets

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 12:04:08 -07:00
Mamta Shukla
54da60beab staging: rtl8723bs: os_dep: Remove space after cast
Remove space after cast to fix checkpatch issue.
CHECK: No space is necessary after a cast

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
ACKed-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11 20:20:06 +02:00
Mamta Shukla
e2b13595ae staging: rtl8723bs: os_dep: Remove true and false comparison
Remove comparison to true and false in if statement.
Issue found with checkpatch.pl
CHECK: Using comparison to true is error prone
CHECK: Using comparison to false is error prone

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
ACKed-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11 20:20:06 +02:00
José Roberto de Souza
c0c46ca461 drm/i915/aml: Add new Amber Lake PCI ID
This new AML PCI ID uses the same gen graphics as Coffe Lake not a
Kaby Lake one like the other AMLs.

So to make it more explicit renaming INTEL_AML_GT2_IDS to
INTEL_AML_KBL_GT2_IDS and naming this id as INTEL_AML_CFL_GT2_IDS.

v2:
- missed add new AML macro to INTEL_CFL_IDS()
- added derivated platform initials to AML macros

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180927010650.22731-1-jose.souza@intel.com
2018-10-11 10:59:34 -07:00
Michal Simek
2088cfd882 serial: uartps: Do not allow use aliases >= MAX_UART_INSTANCES
Aliases >= MAX_UART_INSTANCES is no problem to find out and use but in
error path is necessary skip clearing bits in bitmap to ensure that only
bits in allocated bitmap are handled and nothing beyond that.
Without this patch when for example serial90 alias is used then in error
patch bit 90 is clear in 32bit wide bitmap.

Fixes: ae1cca3fa3 ("serial: uartps: Change uart ID port allocation")
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11 19:59:29 +02:00
Miles Chen
33a1a7be19 tty: check name length in tty_find_polling_driver()
The issue is found by a fuzzing test.
If tty_find_polling_driver() recevies an incorrect input such as
',,' or '0b', the len becomes 0 and strncmp() always return 0.
In this case, a null p->ops->poll_init() is called and it causes a kernel
panic.

Fix this by checking name length against zero in tty_find_polling_driver().

$echo ,, > /sys/module/kgdboc/parameters/kgdboc
[   20.804451] WARNING: CPU: 1 PID: 104 at drivers/tty/serial/serial_core.c:457
uart_get_baud_rate+0xe8/0x190
[   20.804917] Modules linked in:
[   20.805317] CPU: 1 PID: 104 Comm: sh Not tainted 4.19.0-rc7ajb #8
[   20.805469] Hardware name: linux,dummy-virt (DT)
[   20.805732] pstate: 20000005 (nzCv daif -PAN -UAO)
[   20.805895] pc : uart_get_baud_rate+0xe8/0x190
[   20.806042] lr : uart_get_baud_rate+0xc0/0x190
[   20.806476] sp : ffffffc06acff940
[   20.806676] x29: ffffffc06acff940 x28: 0000000000002580
[   20.806977] x27: 0000000000009600 x26: 0000000000009600
[   20.807231] x25: ffffffc06acffad0 x24: 00000000ffffeff0
[   20.807576] x23: 0000000000000001 x22: 0000000000000000
[   20.807807] x21: 0000000000000001 x20: 0000000000000000
[   20.808049] x19: ffffffc06acffac8 x18: 0000000000000000
[   20.808277] x17: 0000000000000000 x16: 0000000000000000
[   20.808520] x15: ffffffffffffffff x14: ffffffff00000000
[   20.808757] x13: ffffffffffffffff x12: 0000000000000001
[   20.809011] x11: 0101010101010101 x10: ffffff880d59ff5f
[   20.809292] x9 : ffffff880d59ff5e x8 : ffffffc06acffaf3
[   20.809549] x7 : 0000000000000000 x6 : ffffff880d59ff5f
[   20.809803] x5 : 0000000080008001 x4 : 0000000000000003
[   20.810056] x3 : ffffff900853e6b4 x2 : dfffff9000000000
[   20.810693] x1 : ffffffc06acffad0 x0 : 0000000000000cb0
[   20.811005] Call trace:
[   20.811214]  uart_get_baud_rate+0xe8/0x190
[   20.811479]  serial8250_do_set_termios+0xe0/0x6f4
[   20.811719]  serial8250_set_termios+0x48/0x54
[   20.811928]  uart_set_options+0x138/0x1bc
[   20.812129]  uart_poll_init+0x114/0x16c
[   20.812330]  tty_find_polling_driver+0x158/0x200
[   20.812545]  configure_kgdboc+0xbc/0x1bc
[   20.812745]  param_set_kgdboc_var+0xb8/0x150
[   20.812960]  param_attr_store+0xbc/0x150
[   20.813160]  module_attr_store+0x40/0x58
[   20.813364]  sysfs_kf_write+0x8c/0xa8
[   20.813563]  kernfs_fop_write+0x154/0x290
[   20.813764]  vfs_write+0xf0/0x278
[   20.813951]  __arm64_sys_write+0x84/0xf4
[   20.814400]  el0_svc_common+0xf4/0x1dc
[   20.814616]  el0_svc_handler+0x98/0xbc
[   20.814804]  el0_svc+0x8/0xc
[   20.822005] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
[   20.826913] Mem abort info:
[   20.827103]   ESR = 0x84000006
[   20.827352]   Exception class = IABT (current EL), IL = 16 bits
[   20.827655]   SET = 0, FnV = 0
[   20.827855]   EA = 0, S1PTW = 0
[   20.828135] user pgtable: 4k pages, 39-bit VAs, pgdp = (____ptrval____)
[   20.828484] [0000000000000000] pgd=00000000aadee003, pud=00000000aadee003, pmd=0000000000000000
[   20.829195] Internal error: Oops: 84000006 [#1] SMP
[   20.829564] Modules linked in:
[   20.829890] CPU: 1 PID: 104 Comm: sh Tainted: G        W         4.19.0-rc7ajb #8
[   20.830545] Hardware name: linux,dummy-virt (DT)
[   20.830829] pstate: 60000085 (nZCv daIf -PAN -UAO)
[   20.831174] pc :           (null)
[   20.831457] lr : serial8250_do_set_termios+0x358/0x6f4
[   20.831727] sp : ffffffc06acff9b0
[   20.831936] x29: ffffffc06acff9b0 x28: ffffff9008d7c000
[   20.832267] x27: ffffff900969e16f x26: 0000000000000000
[   20.832589] x25: ffffff900969dfb0 x24: 0000000000000000
[   20.832906] x23: ffffffc06acffad0 x22: ffffff900969e160
[   20.833232] x21: 0000000000000000 x20: ffffffc06acffac8
[   20.833559] x19: ffffff900969df90 x18: 0000000000000000
[   20.833878] x17: 0000000000000000 x16: 0000000000000000
[   20.834491] x15: ffffffffffffffff x14: ffffffff00000000
[   20.834821] x13: ffffffffffffffff x12: 0000000000000001
[   20.835143] x11: 0101010101010101 x10: ffffff880d59ff5f
[   20.835467] x9 : ffffff880d59ff5e x8 : ffffffc06acffaf3
[   20.835790] x7 : 0000000000000000 x6 : ffffff880d59ff5f
[   20.836111] x5 : c06419717c314100 x4 : 0000000000000007
[   20.836419] x3 : 0000000000000000 x2 : 0000000000000000
[   20.836732] x1 : 0000000000000001 x0 : ffffff900969df90
[   20.837100] Process sh (pid: 104, stack limit = 0x(____ptrval____))
[   20.837396] Call trace:
[   20.837566]            (null)
[   20.837816]  serial8250_set_termios+0x48/0x54
[   20.838089]  uart_set_options+0x138/0x1bc
[   20.838570]  uart_poll_init+0x114/0x16c
[   20.838834]  tty_find_polling_driver+0x158/0x200
[   20.839119]  configure_kgdboc+0xbc/0x1bc
[   20.839380]  param_set_kgdboc_var+0xb8/0x150
[   20.839658]  param_attr_store+0xbc/0x150
[   20.839920]  module_attr_store+0x40/0x58
[   20.840183]  sysfs_kf_write+0x8c/0xa8
[   20.840183]  sysfs_kf_write+0x8c/0xa8
[   20.840440]  kernfs_fop_write+0x154/0x290
[   20.840702]  vfs_write+0xf0/0x278
[   20.840942]  __arm64_sys_write+0x84/0xf4
[   20.841209]  el0_svc_common+0xf4/0x1dc
[   20.841471]  el0_svc_handler+0x98/0xbc
[   20.841713]  el0_svc+0x8/0xc
[   20.842057] Code: bad PC value
[   20.842764] ---[ end trace a8835d7de79aaadf ]---
[   20.843134] Kernel panic - not syncing: Fatal exception
[   20.843515] SMP: stopping secondary CPUs
[   20.844289] Kernel Offset: disabled
[   20.844634] CPU features: 0x0,21806002
[   20.844857] Memory Limit: none
[   20.845172] ---[ end Kernel panic - not syncing: Fatal exception ]---

Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11 19:59:29 +02:00
Hiromitsu Yamasaki
05156e0a12 serial: sh-sci: Add r8a77990 support
This patch adds the R-Car E3 serial documentation.

Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11 19:59:29 +02:00
Greg KH
b97b3d9fb5 tty: wipe buffer if not echoing data
If we are not echoing the data to userspace or the console is in icanon
mode, then perhaps it is a "secret" so we should wipe it once we are
done with it.

This mirrors the logic that the audit code has.

Reported-by: aszlig <aszlig@nix.build>
Tested-by: Milan Broz <gmazyland@gmail.com>
Tested-by: Daniel Zatovic <daniel.zatovic@gmail.com>
Tested-by: aszlig <aszlig@nix.build>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11 19:50:00 +02:00
Linus Torvalds
c9a8e5fce0 tty: wipe buffer.
After we are done with the tty buffer, zero it out.

Reported-by: aszlig <aszlig@nix.build>
Tested-by: Milan Broz <gmazyland@gmail.com>
Tested-by: Daniel Zatovic <daniel.zatovic@gmail.com>
Tested-by: aszlig <aszlig@nix.build>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11 19:50:00 +02:00
Maciej S. Szmigiero
a2fa8a19b7 cfq: clear queue pointers from cfqg after unpinning them in cfq_pd_offline
BFQ is already doing a similar thing in its .pd_offline_fn() method
implementation.

While it seems that after commit 4c6994806f
("blk-throttle: fix race between blkcg_bio_issue_check() and cgroup_rmdir()")
was reverted leaving these pointers intact no longer causes crashes
clearing them is still a sensible thing to do to make the code more robust.

Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-10-11 11:46:19 -06:00
Moshe Shemesh
2645060834 net/mlx4_core: Fix warnings during boot on driverinit param set failures
During boot, mlx4_core sets the driverinit configuration parameters and
updates the devlink module on the initial values calling
devlink_param_driverinit_value_set().
If devlink_param_driverinit_value_set() returns an error mlx4_core
reports kernel module warning.

This caused false alarm during boot in case kernel was compiled with
CONFIG_NET_DEVLINK off.
Fix by removing warning reported in case
devlink_param_driverinit_value_set() fails.

This actually makes the function mlx4_devlink_set_init_value()
redundant to using directly devlink_param_driverinit_value_set() and so
removed.

It fixes the following kernel trace:

 mlx4_core 0000:00:06.0: devlink set parameter 0 value failed (err = -95)
 mlx4_core 0000:00:06.0: devlink set parameter 1 value failed (err = -95)
 mlx4_core 0000:00:06.0: devlink set parameter 4 value failed (err = -95)
 mlx4_core 0000:00:06.0: devlink set parameter 5 value failed (err = -95)
 mlx4_core 0000:00:06.0: devlink set parameter 3 value failed (err = -95)

Fixes: bd1b51dc66 ("mlx4: Add mlx4 initial parameters table and register it")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:24:35 -07:00
Greg Kroah-Hartman
0778a9f2dd Merge branch 'for-4.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Tejun writes:
  "cgroup fixes for v4.19-rc7

   One cgroup2 threaded mode fix for v4.19-rc7.  While threaded mode
   isn't used widely (yet) and the bug requires somewhat convoluted
   sequence of operations, it causes a userland visible malfunction -
   EINVAL on a valid attempt to enable threaded mode.  This pull request
   contains the fix"

* 'for-4.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: Fix dom_cgrp propagation when enabling threaded mode
2018-10-11 19:24:01 +02:00
Ying Xue
a1f8dd34e6 tipc: eliminate possible recursive locking detected by LOCKDEP
When booting kernel with LOCKDEP option, below warning info was found:

WARNING: possible recursive locking detected
4.19.0-rc7+ #14 Not tainted
--------------------------------------------
swapper/0/1 is trying to acquire lock:
00000000dcfc0fc8 (&(&list->lock)->rlock#4){+...}, at: spin_lock_bh
include/linux/spinlock.h:334 [inline]
00000000dcfc0fc8 (&(&list->lock)->rlock#4){+...}, at:
tipc_link_reset+0x125/0xdf0 net/tipc/link.c:850

but task is already holding lock:
00000000cbb9b036 (&(&list->lock)->rlock#4){+...}, at: spin_lock_bh
include/linux/spinlock.h:334 [inline]
00000000cbb9b036 (&(&list->lock)->rlock#4){+...}, at:
tipc_link_reset+0xfa/0xdf0 net/tipc/link.c:849

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&(&list->lock)->rlock#4);
  lock(&(&list->lock)->rlock#4);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

2 locks held by swapper/0/1:
 #0: 00000000f7539d34 (pernet_ops_rwsem){+.+.}, at:
register_pernet_subsys+0x19/0x40 net/core/net_namespace.c:1051
 #1: 00000000cbb9b036 (&(&list->lock)->rlock#4){+...}, at:
spin_lock_bh include/linux/spinlock.h:334 [inline]
 #1: 00000000cbb9b036 (&(&list->lock)->rlock#4){+...}, at:
tipc_link_reset+0xfa/0xdf0 net/tipc/link.c:849

stack backtrace:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.0-rc7+ #14
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1af/0x295 lib/dump_stack.c:113
 print_deadlock_bug kernel/locking/lockdep.c:1759 [inline]
 check_deadlock kernel/locking/lockdep.c:1803 [inline]
 validate_chain kernel/locking/lockdep.c:2399 [inline]
 __lock_acquire+0xf1e/0x3c60 kernel/locking/lockdep.c:3411
 lock_acquire+0x1db/0x520 kernel/locking/lockdep.c:3900
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:168
 spin_lock_bh include/linux/spinlock.h:334 [inline]
 tipc_link_reset+0x125/0xdf0 net/tipc/link.c:850
 tipc_link_bc_create+0xb5/0x1f0 net/tipc/link.c:526
 tipc_bcast_init+0x59b/0xab0 net/tipc/bcast.c:521
 tipc_init_net+0x472/0x610 net/tipc/core.c:82
 ops_init+0xf7/0x520 net/core/net_namespace.c:129
 __register_pernet_operations net/core/net_namespace.c:940 [inline]
 register_pernet_operations+0x453/0xac0 net/core/net_namespace.c:1011
 register_pernet_subsys+0x28/0x40 net/core/net_namespace.c:1052
 tipc_init+0x83/0x104 net/tipc/core.c:140
 do_one_initcall+0x109/0x70a init/main.c:885
 do_initcall_level init/main.c:953 [inline]
 do_initcalls init/main.c:961 [inline]
 do_basic_setup init/main.c:979 [inline]
 kernel_init_freeable+0x4bd/0x57f init/main.c:1144
 kernel_init+0x13/0x180 init/main.c:1063
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413

The reason why the noise above was complained by LOCKDEP is because we
nested to hold l->wakeupq.lock and l->inputq->lock in tipc_link_reset
function. In fact it's unnecessary to move skb buffer from l->wakeupq
queue to l->inputq queue while holding the two locks at the same time.
Instead, we can move skb buffers in l->wakeupq queue to a temporary
list first and then move the buffers of the temporary list to l->inputq
queue, which is also safe for us.

Fixes: 3f32d0be6c ("tipc: lock wakeup & inputq at tipc_link_reset()")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:23:48 -07:00
Greg Kroah-Hartman
e5337178f7 Kbuild fixes for v4.19 (2nd)
- Fix warnings from recordmcount.pl when building with Clang
 
  - Allow Clang to use GNU toolchains correctly
 
  - Disable CONFIG_SAMPLES for UML to avoid build error
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Merge tag 'kbuild-fixes-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Masahiro writes:
  "Kbuild fixes for v4.19 (2nd)
   - Fix warnings from recordmcount.pl when building with Clang
   - Allow Clang to use GNU toolchains correctly
   - Disable CONFIG_SAMPLES for UML to avoid build error"

* tag 'kbuild-fixes-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  samples: disable CONFIG_SAMPLES for UML
  kbuild: allow to use GCC toolchain not in Clang search path
  ftrace: Build with CPPFLAGS to get -Qunused-arguments
2018-10-11 19:23:07 +02:00
Paolo Abeni
9dffa76c21 selftests: use posix-style redirection in ip_defrag.sh
The ip_defrag.sh script requires bash-style output redirection but
use the default shell. This may cause random failures if the default
shell is not bash.
Address the above using posix compliant output redirection.

Fixes: 02c7f38b7a ("selftests/net: add ip_defrag selftest")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:22:07 -07:00
Arnd Bergmann
e70a57fa59 cxgb4: fix thermal configuration dependencies
With CONFIG_THERMAL=m, we get a build error:

drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c: In function 'cxgb4_thermal_get_trip_type':
drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c:48:11: error: 'struct adapter' has no member named 'ch_thermal'

Once that is fixed by using IS_ENABLED() checks, we get a link error
against the thermal subsystem when cxgb4 is built-in:

drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.o: In function `cxgb4_thermal_init':
cxgb4_thermal.c:(.text+0x180): undefined reference to `thermal_zone_device_register'
drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.o: In function `cxgb4_thermal_remove':
cxgb4_thermal.c:(.text+0x1e0): undefined reference to `thermal_zone_device_unregister'

Finally, since CONFIG_THERMAL can be =m, the Makefile fails to pick up the
extra file into built-in.a, and we get another link failure against the
cxgb4_thermal_init/cxgb4_thermal_remove files, so the Makefile has to
be adapted as well to work for both CONFIG_THERMAL=y and =m.

Fixes: b187191577 ("cxgb4: Add thermal zone support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:21:15 -07:00
David S. Miller
26b1f4cb91 Merge branch 'net-explicitly-requires-bash-when-needed'
Paolo Abeni says:

====================
net: explicitly requires bash when needed.

Some test scripts require bash-only features but use the default shell.
This may cause random failures if the default shell is not bash.
Instead of doing a potentially complex rewrite of such scripts, these patches
require the bash interpreter, where needed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:19:46 -07:00
Paolo Abeni
12a2ea962c selftests: udpgso_bench.sh explicitly requires bash
The udpgso_bench.sh script requires several bash-only features. This
may cause random failures if the default shell is not bash.
Address the above explicitly requiring bash as the script interpreter

Fixes: 3a687bef14 ("selftests: udp gso benchmark")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:19:46 -07:00
Paolo Abeni
3c718e677c selftests: rtnetlink.sh explicitly requires bash.
the script rtnetlink.sh requires a bash-only features (sleep with sub-second
precision). This may cause random test failure if the default shell is not
bash.
Address the above explicitly requiring bash as the script interpreter.

Fixes: 33b01b7b4f ("selftests: add rtnetlink test script")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:19:46 -07:00
David S. Miller
1f41dc5e87 Merge branch 'ena-next'
Arthur Kiyanovski says:

====================
Improving performance and reducing latencies, by using latest capabilities exposed in ENA device

This patchset introduces the following:
1. A new placement policy of Tx headers and descriptors, which takes
advantage of an option to place headers + descriptors in device memory
space. This is sometimes referred to as LLQ - low latency queue.
The patch set defines the admin capability, maps the device memory as
write-combined, and adds a mode in transmit datapath to do header +
descriptor placement on the device.
2. Support for RX checksum offloading
3. Miscelaneous small improvements and code cleanups

Note: V1 of this patchset was created as if patches e2a322a 248ab77
from net were applied to net-next before applying the patchset. This V2
version does not assume this, and should be applyed directly on net-next
without the aformentioned patches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:52 -07:00
Arthur Kiyanovski
be26667cb3 net: ena: fix indentations in ena_defs for better readability
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
3a7b9d8ddd net: ena: update driver version to 2.0.1
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
f1e90f6e2c net: ena: remove redundant parameter in ena_com_admin_init()
Remove redundant spinlock acquire parameter from ena_com_admin_init()

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
87731f0c68 net: ena: change rx copybreak default to reduce kernel memory pressure
Improves socket memory utilization when receiving packets larger
than 128 bytes (the previous rx copybreak) and smaller than 256 bytes.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
0574bb806d net: ena: limit refill Rx threshold to 256 to avoid latency issues
Currently Rx refill is done when the number of required descriptors is
above 1/8 queue size. With a default of 1024 entries per queue the
threshold is 128 descriptors.
There is intention to increase the queue size to 8196 entries.
In this case threshold of 1024 descriptors is too large and can hurt
latency.
Add another limitation to Rx threshold to be at most 256 descriptors.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
bd791175a6 net: ena: explicit casting and initialization, and clearer error handling
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
cb36bb36e1 net: ena: use CSUM_CHECKED device indication to report skb's checksum status
Set skb->ip_summed to the correct value as reported by the device.
Add counter for the case where rx csum offload is enabled but
device didn't check it.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
38005ca816 net: ena: add functions for handling Low Latency Queues in ena_netdev
This patch includes all code changes necessary in ena_netdev to enable
packet sending via the LLQ placemnt mode.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
689b2bdaaa net: ena: add functions for handling Low Latency Queues in ena_com
This patch introduces APIs for detection, initialization, configuration
and actual usage of low latency queues(LLQ). It extends transmit API with
creation of LLQ descriptors in device memory (which include host buffers
descriptors as well as packet header)

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
a7982b8ec9 net: ena: introduce Low Latency Queues data structures according to ENA spec
Low Latency Queues(LLQ) allow usage of device's memory for descriptors
and headers. Such queues decrease processing time since data is already
located on the device when driver rings the doorbell.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:51 -07:00
Arthur Kiyanovski
095f2f1fac net: ena: complete host info to match latest ENA spec
Add new fields and definitions to host info and fill them
according to the latest ENA spec version.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:50 -07:00
Arthur Kiyanovski
0e575f8542 net: ena: minor performance improvement
Reduce fastpath overhead by making ena_com_tx_comp_req_id_get() inline.
Also move it to ena_eth_com.h file with its dependency function
ena_com_cq_inc_head().

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:13:50 -07:00
Greg Kroah-Hartman
834d3cd294 Fix open-coded multiplication arguments to allocators
- Fixes several new open-coded multiplications added in the 4.19 merge window.
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Merge tag 'alloc-args-v4.19-rc8' of https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Kees writes:
  "Fix open-coded multiplication arguments to allocators

   - Fixes several new open-coded multiplications added in the 4.19
     merge window."

* tag 'alloc-args-v4.19-rc8' of https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  treewide: Replace more open-coded allocation size multiplications
2018-10-11 19:10:30 +02:00
David S. Miller
7b68b83614 Merge branch 'mlxsw-Preparations-for-VxLAN-support'
Ido Schimmel says:

====================
mlxsw: Preparations for VxLAN support

This patchset prepares mlxsw for VxLAN support. It contains small and
mostly non-functional changes.

The first eight patches perform small changes in the code to make it
more receptive towards the actual VxLAN changes in the next patchset.

Patches 9-17 add the registers used to configure the device for VxLAN
offload.

Last two patches add the required resources and trap IDs.

The next patchset is available here [1].

1. https://github.com/idosch/linux/tree/vxlan
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:08:24 -07:00
Ido Schimmel
b02597d513 mlxsw: spectrum: Add NVE packet traps
The DECAP_ECN0 trap will be used to trap packets where the overlay
packet is marked with Non-ECT, but the underlay packet is marked with
either ECT(0), ECT(1) or CE. When trapped, such packets will be counted
as errors by the VxLAN driver and thus provide better visibility.

The NVE_ENCAP_ARP trap will be used to trap ARP packets undergoing NVE
encapsulation. This is needed in order to support E-VPN ARP suppression,
where the Linux bridge does not flood ARP packets through tunnel ports
in case it can answer the ARP request itself.

Note that all the packets trapped via these traps are marked with
'offload_fwd_mark', so as to not be re-flooded by the Linux bridge
through the ASIC ports.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:08:23 -07:00
Ido Schimmel
2bd414aef6 mlxsw: resources: Add NVE resources
Add the following resources to be used by the NVE code:
* Number of IPv4 underlay destination IPs in a single TNUMT record
* Number of IPv6 underlay destination IPs in a single TNUMT record

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-11 10:08:23 -07:00