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4 years agoMerge tag 'memory-controller-drv-pl353-5.14' of https://git.kernel.org/pub/scm/linux...
Olof Johansson [Sat, 12 Jun 2021 15:53:04 +0000 (08:53 -0700)] 
Merge tag 'memory-controller-drv-pl353-5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers

Memory controller drivers for v5.14 - PL353

Bigger work around ARM Primecell PL35x SMC memory controller driver by
Miquel Raynal built on previous series from Naga Sureshkumar Relli.

This includes bindings cleanup and correction, converting these to
dtschema and several cleanyps in pl353-smc driver.

* tag 'memory-controller-drv-pl353-5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl:
  dt-binding: memory: pl353-smc: Convert to yaml
  MAINTAINERS: Add PL353 SMC entry
  memory: pl353-smc: Declare variables following a reverse christmas tree order
  memory: pl353-smc: Avoid useless acronyms in descriptions
  memory: pl353-smc: Let lower level controller drivers handle inits
  memory: pl353-smc: Rename goto labels
  memory: pl353-smc: Fix style
  dt-binding: memory: pl353-smc: Fix the NAND controller node in the example
  dt-binding: memory: pl353-smc: Drop unsupported nodes from the example
  dt-binding: memory: pl353-smc: Fix the example syntax and style
  dt-binding: memory: pl353-smc: Describe the child reg property
  dt-binding: memory: pl353-smc: Drop the partitioning section
  dt-binding: memory: pl353-smc: Document the range property
  dt-binding: memory: pl353-smc: Rephrase the binding

Link: https://lore.kernel.org/r/20210611140659.61980-2-krzysztof.kozlowski@canonical.com
Signed-off-by: Olof Johansson <olof@lixom.net>
4 years agoMerge tag 'memory-controller-drv-5.14' of https://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Sat, 12 Jun 2021 15:52:34 +0000 (08:52 -0700)] 
Merge tag 'memory-controller-drv-5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers

Memory controller drivers for v5.14

Several small fixes and cleanups for stm32, atmel, pl353, renesas-rpc,
TI emif and fsl_ifc.

* tag 'memory-controller-drv-5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl:
  memory: emif: remove unused frequency and voltage notifiers
  memory: fsl_ifc: fix leak of private memory on probe failure
  memory: fsl_ifc: fix leak of IO mapping on probe failure
  MAINTAINERS: memory: cover also header file
  memory: renesas-rpc-if: correct whitespace
  memory: pl353: Fix error return code in pl353_smc_probe()
  memory: atmel-ebi: add missing of_node_put for loop iteration
  memory: stm32-fmc2-ebi: add missing of_node_put for loop iteration

Link: https://lore.kernel.org/r/20210611140659.61980-1-krzysztof.kozlowski@canonical.com
Signed-off-by: Olof Johansson <olof@lixom.net>
4 years agoMerge tag 'v5.13-next-soc' of https://git.kernel.org/pub/scm/linux/kernel/git/matthia...
Olof Johansson [Sat, 12 Jun 2021 15:47:18 +0000 (08:47 -0700)] 
Merge tag 'v5.13-next-soc' of https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux into arm/drivers

devapc:
- add missing MODULE_DEVICE_TABLE to fix modalias

mkt-pm-domains:
- register smi node as regmap and not as syscon
- prepare-enable and unprepare-disable dependent clocks

pwrap:
- add support for MT8195

* tag 'v5.13-next-soc' of https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux:
  soc: mediatek: pwrap: add pwrap driver for MT8195 SoC
  dt-bindings: mediatek: add compatible for MT8195 pwrap
  soc: mtk-pm-domains: Fix the clock prepared issue
  soc: mtk-pm-domains: do not register smi node as syscon
  soc: mediatek: add missing MODULE_DEVICE_TABLE

Link: https://lore.kernel.org/r/479ec9ad-95d3-ce91-8243-63596c4c6676@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
4 years agoMerge tag 'renesas-drivers-for-v5.14-tag1' of git://git.kernel.org/pub/scm/linux...
Olof Johansson [Sat, 12 Jun 2021 15:45:57 +0000 (08:45 -0700)] 
Merge tag 'renesas-drivers-for-v5.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/drivers

Renesas driver updates for v5.14

  - Initial support for the new RZ/G2L SoC variants.

* tag 'renesas-drivers-for-v5.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
  soc: renesas: Add support to read LSI DEVID register of RZ/G2{L,LC} SoC's
  soc: renesas: Add ARCH_R9A07G044 for the new RZ/G2L SoC's

Link: https://lore.kernel.org/r/cover.1623403800.git.geert+renesas@glider.be
Signed-off-by: Olof Johansson <olof@lixom.net>
4 years agoMerge tag 'scmi-updates-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep...
Olof Johansson [Sat, 12 Jun 2021 15:42:27 +0000 (08:42 -0700)] 
Merge tag 'scmi-updates-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers

ARM SCMI updates for v5.14

- Support for SCMI clocks from the SCMI power domains
- Addition of checks for correct compatibles for shmem devicetree nodes
  that were found missing in the process of YAML schema conversion
- Kconfig and associated build fix found when optee transport are being
  worked on
- Couple of fixes and cleanups found as with work-in-progress virtio
  transport support

The new transports(optee and virtio) themselves are still being worked on
with ongoing reviews, they are not part of this yet

* tag 'scmi-updates-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Avoid multiple initialisations of hdr->protocol_id
  firmware: arm_scmi: Move reinit_completion from scmi_xfer_get to do_xfer
  firmware: arm_scmi: Add delayed response status check
  firmware: arm_scmi: Add compatibility checks for shmem node
  firmware: arm_scpi: Add compatibility checks for shmem node
  firmware: arm_scmi: Fix the build when CONFIG_MAILBOX is not selected
  firmware: arm_scmi: Reset Rx buffer to max size during async commands
  firmware: arm_scmi: Add SMCCC discovery dependency in Kconfig
  firmware: arm_scmi: Add clock management to the SCMI power domain

Link: https://lore.kernel.org/r/20210611075722.2813550-1-sudeep.holla@arm.com
Signed-off-by: Olof Johansson <olof@lixom.net>
4 years agoMerge tag 'arm-soc/for-5.14/drivers' of https://github.com/Broadcom/stblinux into...
Olof Johansson [Sat, 12 Jun 2021 15:40:44 +0000 (08:40 -0700)] 
Merge tag 'arm-soc/for-5.14/drivers' of https://github.com/Broadcom/stblinux into arm/drivers

This pull request contains Broadcom SoCs drivers changes for 5.14,
please pull the following:

- Jiapeng removes an unused variable in the Broadcom STB BIU driver
  causing an unused warning.

* tag 'arm-soc/for-5.14/drivers' of https://github.com/Broadcom/stblinux:
  soc: bcm: brcmstb: remove unused variable 'brcmstb_machine_match'

Link: https://lore.kernel.org/r/20210610194836.309869-3-f.fainelli@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
4 years agoMerge tag 'amlogic-drivers-for-v5.14' of https://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Sat, 12 Jun 2021 15:33:45 +0000 (08:33 -0700)] 
Merge tag 'amlogic-drivers-for-v5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux into arm/drivers

Amlogic Drivers updates for v5.14:
- soc: amlogic: meson-ee-pwrc: Rename "get_power" to "is_powered_off"

* tag 'amlogic-drivers-for-v5.14' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux:
  soc: amlogic: meson-ee-pwrc: Rename "get_power" to "is_powered_off"

Link: https://lore.kernel.org/r/58283600-2d9a-c259-4d80-6915e6e6c79e@baylibre.com
Signed-off-by: Olof Johansson <olof@lixom.net>
4 years agoMerge tag 'reset-for-v5.14' of git://git.pengutronix.de/pza/linux into arm/drivers
Olof Johansson [Sat, 12 Jun 2021 15:23:38 +0000 (08:23 -0700)] 
Merge tag 'reset-for-v5.14' of git://git.pengutronix.de/pza/linux into arm/drivers

Reset controller updates for v5.14

This tag adds support for the Microchip Sparx5 Switch Reset controller
and contains some small fixes and cleanups in core and various drivers.

* tag 'reset-for-v5.14' of git://git.pengutronix.de/pza/linux:
  reset: brcmstb: Add missing MODULE_DEVICE_TABLE
  reset: a10sr: add missing of_match_table reference
  reset: RESET_INTEL_GW should depend on X86
  reset: RESET_BRCMSTB_RESCAL should depend on ARCH_BRCMSTB
  reset: uniphier: enclose UNIPHIER_RESET_ID_END value in parentheses
  reset: sti/syscfg: replace comma with semicolon
  reset: ti-syscon: fix to_ti_syscon_reset_data macro
  reset: berlin: replace unsigned with unsigned int
  reset: whitespace fixes
  reset: mchp: sparx5: add switch reset driver
  dt-bindings: reset: microchip sparx5 reset driver bindings
  reset: oxnas: replace file name with short description
  reset: zynqmp: replace spaces with tabs
  reset: bcm6345: Make reset_control_ops const

Link: https://lore.kernel.org/r/418cf3a460cfe1d0f91f87e10baaf478bd41f1d5.camel@pengutronix.de
Signed-off-by: Olof Johansson <olof@lixom.net>
4 years agodt-binding: memory: pl353-smc: Convert to yaml
Miquel Raynal [Thu, 10 Jun 2021 08:20:30 +0000 (10:20 +0200)] 
dt-binding: memory: pl353-smc: Convert to yaml

Convert this binding file to yaml schema.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210610082040.2075611-10-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agoMAINTAINERS: Add PL353 SMC entry
Miquel Raynal [Thu, 10 Jun 2021 08:20:37 +0000 (10:20 +0200)] 
MAINTAINERS: Add PL353 SMC entry

Add Naga from Xilinx and myself responsible of this driver.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Naga Sureshkumar Relli <naga.sureshkumar.relli@xilinx.com>
Link: https://lore.kernel.org/r/20210610082040.2075611-16-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agomemory: pl353-smc: Declare variables following a reverse christmas tree order
Miquel Raynal [Thu, 10 Jun 2021 08:20:36 +0000 (10:20 +0200)] 
memory: pl353-smc: Declare variables following a reverse christmas tree order

This is a purely cosmetic change.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20210610082040.2075611-15-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agomemory: pl353-smc: Avoid useless acronyms in descriptions
Miquel Raynal [Thu, 10 Jun 2021 08:20:35 +0000 (10:20 +0200)] 
memory: pl353-smc: Avoid useless acronyms in descriptions

APER does not mean anything, while it seems legitimate to call this
clock the AXI peripheral clock.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20210610082040.2075611-14-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agomemory: pl353-smc: Let lower level controller drivers handle inits
Miquel Raynal [Thu, 10 Jun 2021 08:20:34 +0000 (10:20 +0200)] 
memory: pl353-smc: Let lower level controller drivers handle inits

There is no point in having all these definitions at the SMC bus level,
these are extremely tight to the NAND controller driver implementation,
are not particularly generic, imply more boilerplate than needed, do
not really follow the device model by receiving no argument and some of
them are actually buggy.

Let's get rid of these right now as there is no current user and keep
this driver at a simple level: only the SMC bare initializations.

The NAND controller driver which I am going to introduce will take care
of redefining properly all these helpers and using them directly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20210610082040.2075611-13-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agomemory: pl353-smc: Rename goto labels
Miquel Raynal [Thu, 10 Jun 2021 08:20:33 +0000 (10:20 +0200)] 
memory: pl353-smc: Rename goto labels

A goto label is better named

        do_something:

than

        out_something_to_do:

Use the former wording and really describe what the jump involves.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20210610082040.2075611-12-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agomemory: pl353-smc: Fix style
Miquel Raynal [Thu, 10 Jun 2021 08:20:32 +0000 (10:20 +0200)] 
memory: pl353-smc: Fix style

Use proper spacing.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20210610082040.2075611-11-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agodt-binding: memory: pl353-smc: Fix the NAND controller node in the example
Miquel Raynal [Thu, 10 Jun 2021 08:20:29 +0000 (10:20 +0200)] 
dt-binding: memory: pl353-smc: Fix the NAND controller node in the example

To be fully valid, the NAND controller node in the example should be
named nand-controller instead of flash, should be at the address @0,0
instead of @e1000000 and should have a couple of:
- #address-cells
- #size-cells
properties.

The label is being renamed nfc0 as well which is more usual than nand_0.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210610082040.2075611-8-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agodt-binding: memory: pl353-smc: Drop unsupported nodes from the example
Miquel Raynal [Thu, 10 Jun 2021 08:20:28 +0000 (10:20 +0200)] 
dt-binding: memory: pl353-smc: Drop unsupported nodes from the example

These nodes are given as examples and are not described nor used
anywhere else. There is also no hardware of my knowledge compatible with
these yet. If we want to be backward compatible, then we should avoid
partially describing nodes and their content while there are no users.
Plus, the examples are wrong (the addresses should be updated) so
let's drop them before converting this file to yaml (only the NAND node,
which will be fixed in the example and described somewhere else is
kept).

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210610082040.2075611-7-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agodt-binding: memory: pl353-smc: Fix the example syntax and style
Miquel Raynal [Thu, 10 Jun 2021 08:20:27 +0000 (10:20 +0200)] 
dt-binding: memory: pl353-smc: Fix the example syntax and style

Enhance the spacing, the comment style, add { }, remove (...).

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210610082040.2075611-6-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agodt-binding: memory: pl353-smc: Describe the child reg property
Miquel Raynal [Thu, 10 Jun 2021 08:20:26 +0000 (10:20 +0200)] 
dt-binding: memory: pl353-smc: Describe the child reg property

Each chil node should have a reg property, no matter the type of
controller (NAND, NOR, SRAM). This should be part of the bindings.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210610082040.2075611-5-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agodt-binding: memory: pl353-smc: Drop the partitioning section
Miquel Raynal [Thu, 10 Jun 2021 08:20:25 +0000 (10:20 +0200)] 
dt-binding: memory: pl353-smc: Drop the partitioning section

This sentence does not belong to this file as this file describes the
bus on which various controllers are wired to.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210610082040.2075611-4-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agodt-binding: memory: pl353-smc: Document the range property
Miquel Raynal [Thu, 10 Jun 2021 08:20:24 +0000 (10:20 +0200)] 
dt-binding: memory: pl353-smc: Document the range property

The ranges property is missing in the description while actually used in
the example. This property is actually needed, so mention it.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210610082040.2075611-3-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agodt-binding: memory: pl353-smc: Rephrase the binding
Miquel Raynal [Thu, 10 Jun 2021 08:20:23 +0000 (10:20 +0200)] 
dt-binding: memory: pl353-smc: Rephrase the binding

Reword this document before converting it to yaml.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210610082040.2075611-2-miquel.raynal@bootlin.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
4 years agosoc: renesas: Add support to read LSI DEVID register of RZ/G2{L,LC} SoC's
Lad Prabhakar [Wed, 9 Jun 2021 16:37:16 +0000 (17:37 +0100)] 
soc: renesas: Add support to read LSI DEVID register of RZ/G2{L,LC} SoC's

Add support for reading the LSI DEVID register which is present in
SYSC block of RZ/G2{L,LC} SoC's.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20210609163717.3083-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
4 years agosoc: renesas: Add ARCH_R9A07G044 for the new RZ/G2L SoC's
Lad Prabhakar [Wed, 9 Jun 2021 15:32:23 +0000 (16:32 +0100)] 
soc: renesas: Add ARCH_R9A07G044 for the new RZ/G2L SoC's

Add ARCH_R9A07G044 as a configuration symbol for the new Renesas
RZ/G2L SoC variants.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20210609153230.6967-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
4 years agomemory: emif: remove unused frequency and voltage notifiers
Krzysztof Kozlowski [Thu, 27 May 2021 15:41:01 +0000 (11:41 -0400)] 
memory: emif: remove unused frequency and voltage notifiers

The driver defined several functions related to handling of frequency
and voltage changes:
 - freq_post_notify_handling
 - freq_pre_notify_handling
 - volt_notify_handling

All these are static, not used inside or outside of driver, and marked
as unused with comment: "TODO: voltage notify handling should be hooked
up to regulator framework as soon as the necessary support is available
in mainline kernel. This function is un-used right now.".

These have been added with commit a93de288aad3 ("memory: emif: handle
frequency and voltage change events") in 2012 and are unused since then.
Additionally mentioned regulator and clock hooking did not happen since
then.  If it did not happen for nine years, let's assume it will not
happen suddenly now.

Remove all unused functions which also allows removal of "t_ck" static
variable "t_ck" and "addressing" member of private structure.

No functionality is lost.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210527154101.80556-1-krzysztof.kozlowski@canonical.com
4 years agomemory: fsl_ifc: fix leak of private memory on probe failure
Krzysztof Kozlowski [Thu, 27 May 2021 15:43:22 +0000 (11:43 -0400)] 
memory: fsl_ifc: fix leak of private memory on probe failure

On probe error the driver should free the memory allocated for private
structure.  Fix this by using resource-managed allocation.

Fixes: a20cbdeffce2 ("powerpc/fsl: Add support for Integrated Flash Controller")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210527154322.81253-2-krzysztof.kozlowski@canonical.com
4 years agomemory: fsl_ifc: fix leak of IO mapping on probe failure
Krzysztof Kozlowski [Thu, 27 May 2021 15:43:21 +0000 (11:43 -0400)] 
memory: fsl_ifc: fix leak of IO mapping on probe failure

On probe error the driver should unmap the IO memory.  Smatch reports:

  drivers/memory/fsl_ifc.c:298 fsl_ifc_ctrl_probe() warn: 'fsl_ifc_ctrl_dev->gregs' not released on lines: 298.

Fixes: a20cbdeffce2 ("powerpc/fsl: Add support for Integrated Flash Controller")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210527154322.81253-1-krzysztof.kozlowski@canonical.com
4 years agofirmware: arm_scmi: Avoid multiple initialisations of hdr->protocol_id
Sudeep Holla [Tue, 8 Jun 2021 14:01:40 +0000 (15:01 +0100)] 
firmware: arm_scmi: Avoid multiple initialisations of hdr->protocol_id

Since the hdr->protocol_id is set from the scmi_protocol_instance handle
just before the transfer, there is no need to initialise the same in
scmi_xfer_get_init. Remove the unnecessary initialisations.

Link: https://lore.kernel.org/r/20210608140140.2042257-1-sudeep.holla@arm.com
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
4 years agofirmware: arm_scmi: Move reinit_completion from scmi_xfer_get to do_xfer
Cristian Marussi [Sun, 6 Jun 2021 22:12:24 +0000 (23:12 +0100)] 
firmware: arm_scmi: Move reinit_completion from scmi_xfer_get to do_xfer

Re-using timed out xfers in a loop can lead to issue if completion was
not properly reinitialized. Move reinit_completion from scmi_xfer_get to
do_xfer to avoid the issue.

Link: https://lore.kernel.org/r/20210606221232.33768-3-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
[sudeep.holla: moved reinit_completion instead of adding another one]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
4 years agofirmware: arm_scmi: Add delayed response status check
Cristian Marussi [Tue, 8 Jun 2021 10:30:56 +0000 (11:30 +0100)] 
firmware: arm_scmi: Add delayed response status check

A successfully received delayed response could anyway report a failure at
the protocol layer in the message status field.

Add a check also for this error condition.

Link: https://lore.kernel.org/r/20210608103056.3388-1-cristian.marussi@arm.com
Fixes: 58ecdf03dbb9 ("firmware: arm_scmi: Add support for asynchronous commands and delayed response")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
4 years agofirmware: arm_scmi: Add compatibility checks for shmem node
Sudeep Holla [Wed, 2 Jun 2021 07:38:51 +0000 (08:38 +0100)] 
firmware: arm_scmi: Add compatibility checks for shmem node

The shared memory node used for communication between the firmware and
the OS should be compatible with "arm,scmi-shmem". Add the check for the
same while parsing the node before fetching the memory regions.

Link: https://lore.kernel.org/r/20210602073851.1005607-2-sudeep.holla@arm.com
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Cristian Marussi <cristian.marussi@arm.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jim Quinlan <jim2101024@gmail.com>
Cc: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
4 years agosoc: mediatek: pwrap: add pwrap driver for MT8195 SoC
Henry Chen [Wed, 2 Jun 2021 11:20:50 +0000 (19:20 +0800)] 
soc: mediatek: pwrap: add pwrap driver for MT8195 SoC

MT8195 are highly integrated SoC and use PMIC_MT6359 for
power management. This patch adds pwrap master driver to
access PMIC_MT6359.

Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
Link: https://lore.kernel.org/r/20210602112050.12338-3-james.lo@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
4 years agodt-bindings: mediatek: add compatible for MT8195 pwrap
Henry Chen [Wed, 2 Jun 2021 11:20:49 +0000 (19:20 +0800)] 
dt-bindings: mediatek: add compatible for MT8195 pwrap

This adds dt-binding documentation of pwrap for Mediatek MT8195
SoCs Platform.

Signed-off-by: Henry Chen <henryc.chen@mediatek.com>
Link: https://lore.kernel.org/r/20210602112050.12338-2-james.lo@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
4 years agofirmware: arm_scpi: Add compatibility checks for shmem node
Sudeep Holla [Wed, 2 Jun 2021 07:38:50 +0000 (08:38 +0100)] 
firmware: arm_scpi: Add compatibility checks for shmem node

The shared memory node used for communication between the firmware and
the OS should be compatible with one of the following:
- amlogic,meson-gxbb-scp-shmem
- amlogic,meson-axg-scp-shmem
- arm,juno-scp-shmem
- arm,scp-shmem
Add the check for the same while parsing the node before fetching the memory
regions.

Link: https://lore.kernel.org/r/20210602073851.1005607-1-sudeep.holla@arm.com
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
4 years agofirmware: arm_scmi: Fix the build when CONFIG_MAILBOX is not selected
Sudeep Holla [Thu, 3 Jun 2021 07:26:31 +0000 (08:26 +0100)] 
firmware: arm_scmi: Fix the build when CONFIG_MAILBOX is not selected

0day CI kernel test robot reported following build error with randconfig

aarch64-linux-ld: drivers/firmware/arm_scmi/driver.o:(.rodata+0x1e0):
undefined reference to `scmi_mailbox_desc'

Fix the error by adding CONFIG_MAILBOX dependency for scmi_mailbox_desc.

Link: https://lore.kernel.org/r/20210603072631.1660963-1-sudeep.holla@arm.com
Cc: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Cristian Marussi <cristian.marussi@arm.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
4 years agoMAINTAINERS: memory: cover also header file
Krzysztof Kozlowski [Tue, 1 Jun 2021 16:06:08 +0000 (18:06 +0200)] 
MAINTAINERS: memory: cover also header file

Add include/memory/ in memory drivers maintainers entry.  So far there
is only one file there for Renesas Reduced Pin Count Interface driver.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210601160608.312446-2-krzysztof.kozlowski@canonical.com
4 years agomemory: renesas-rpc-if: correct whitespace
Krzysztof Kozlowski [Tue, 1 Jun 2021 16:06:07 +0000 (18:06 +0200)] 
memory: renesas-rpc-if: correct whitespace

Use spaces instead of tabs as word separator.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210601160608.312446-1-krzysztof.kozlowski@canonical.com
4 years agofirmware: arm_scmi: Reset Rx buffer to max size during async commands
Cristian Marussi [Tue, 1 Jun 2021 10:24:17 +0000 (11:24 +0100)] 
firmware: arm_scmi: Reset Rx buffer to max size during async commands

During an async commands execution the Rx buffer length is at first set
to max_msg_sz when the synchronous part of the command is first sent.
However once the synchronous part completes the transport layer waits
for the delayed response which will be processed using the same xfer
descriptor initially allocated. Since synchronous response received at
the end of the xfer will shrink the Rx buffer length to the effective
payload response length, it needs to be reset again.

Raise the Rx buffer length again to max_msg_sz before fetching the
delayed response to ensure full response is read correctly from the
shared memory.

Link: https://lore.kernel.org/r/20210601102421.26581-2-cristian.marussi@arm.com
Fixes: 58ecdf03dbb9 ("firmware: arm_scmi: Add support for asynchronous commands and delayed response")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
[sudeep.holla: moved reset to scmi_handle_response as it could race with
               do_xfer_with_response]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
4 years agosoc: mtk-pm-domains: Fix the clock prepared issue
Weiyi Lu [Tue, 1 Jun 2021 03:59:03 +0000 (11:59 +0800)] 
soc: mtk-pm-domains: Fix the clock prepared issue

In this new power domain driver, when adding one power domain
it will prepare the dependent clocks at the same.
So we only do clk_bulk_enable/disable control during power ON/OFF.
When system suspend, the pm runtime framework will forcely power off
power domains. However, the dependent clocks are disabled but kept
prepared.

In MediaTek clock drivers, PLL would be turned ON when we do
clk_bulk_prepare control.

Clock hierarchy:
PLL -->
       DIV_CK -->
                 CLK_MUX
                 (may be dependent clocks)
                         -->
                             SUBSYS_CG
                             (may be dependent clocks)

It will lead some unexpected clock states during system suspend.
This patch will fix by doing prepare_enable/disable_unprepare on
dependent clocks at the same time while we are going to power on/off
any power domain.

Fixes: 59b644b01cf4 ("soc: mediatek: Add MediaTek SCPSYS power domains")
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: chun-jie.chen <chun-jie.chen@mediatek.com>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20210601035905.2970384-1-hsinyi@chromium.org
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
4 years agosoc: mtk-pm-domains: do not register smi node as syscon
Hsin-Yi Wang [Tue, 1 Jun 2021 03:59:04 +0000 (11:59 +0800)] 
soc: mtk-pm-domains: do not register smi node as syscon

Mediatek requires mmsys clocks to be unprepared during suspend,
otherwise system has chances to hang.

syscon_regmap_lookup_by_phandle_optional() will attach and prepare the
first clock in smi node, leading to additional prepare to the clock
which is not balanced with the prepare/unprepare pair in resume/suspend
callbacks.

If a power domain node requests an smi node and the smi node's first
clock is an mmsys clock, it will results in an unstable suspend resume.

Fixes: f414854c8843 ("soc: mediatek: pm-domains: Add SMI block as bus protection block")
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: chun-jie.chen <chun-jie.chen@mediatek.com>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20210601035905.2970384-2-hsinyi@chromium.org
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
4 years agofirmware: arm_scmi: Add SMCCC discovery dependency in Kconfig
Etienne Carriere [Fri, 21 May 2021 13:40:51 +0000 (15:40 +0200)] 
firmware: arm_scmi: Add SMCCC discovery dependency in Kconfig

ARM_SCMI_PROTOCOL depends on either MAILBOX or HAVE_ARM_SMCCC_DISCOVERY,
not MAILBOX alone. Fix the depedency in Kconfig file and driver to
reflect the same.

Link: https://lore.kernel.org/r/20210521134055.24271-1-etienne.carriere@linaro.org
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
[sudeep.holla: Minor tweaks to subject and change log]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
4 years agosoc: amlogic: meson-ee-pwrc: Rename "get_power" to "is_powered_off"
Martin Blumenstingl [Mon, 17 May 2021 20:21:15 +0000 (22:21 +0200)] 
soc: amlogic: meson-ee-pwrc: Rename "get_power" to "is_powered_off"

The name "get_power" is used within the Meson EE power controller driver
to indicate whether a power domain is turned on or off. With the
original "get_power" naming the result was:
- true = powered off
- false = powered on

Rename "get_power" to "is_powered_off" to make the naming consistent
with the third argument to pm_genpd_init. Also this naming is easier to
understand when reading the code without looking at the implementation
of "get_power".

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20210517202115.1004065-1-martin.blumenstingl@googlemail.com
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
4 years agoLinux 5.13-rc3 v5.13-rc3
Linus Torvalds [Sun, 23 May 2021 21:42:48 +0000 (11:42 -1000)] 
Linux 5.13-rc3

4 years agoMerge tag 'perf-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 23 May 2021 16:32:40 +0000 (06:32 -1000)] 
Merge tag 'perf-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "Two perf fixes:

   - Do not check the LBR_TOS MSR when setting up unrelated LBR MSRs as
     this can cause malfunction when TOS is not supported

   - Allocate the LBR XSAVE buffers along with the DS buffers upfront
     because allocating them when adding an event can deadlock"

* tag 'perf-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/lbr: Remove cpuc->lbr_xsave allocation from atomic context
  perf/x86: Avoid touching LBR_TOS MSR for Arch LBR

4 years agoMerge tag 'locking-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 23 May 2021 16:30:08 +0000 (06:30 -1000)] 
Merge tag 'locking-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking fixes from Thomas Gleixner:
 "Two locking fixes:

   - Invoke the lockdep tracepoints in the correct place so the ordering
     is correct again

   - Don't leave the mutex WAITER bit stale when the last waiter is
     dropping out early due to a signal as that forces all subsequent
     lock operations needlessly into the slowpath until it's cleaned up
     again"

* tag 'locking-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal
  locking/lockdep: Correct calling tracepoints

4 years agoMerge tag 'irq-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 23 May 2021 16:28:20 +0000 (06:28 -1000)] 
Merge tag 'irq-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A few fixes for irqchip drivers:

   - Allocate interrupt descriptors correctly on Mainstone PXA when
     SPARSE_IRQ is enabled; otherwise the interrupt association fails

   - Make the APPLE AIC chip driver depend on APPLE

   - Remove redundant error output on devm_ioremap_resource() failure"

* tag 'irq-urgent-2021-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip: Remove redundant error printing
  irqchip/apple-aic: APPLE_AIC should depend on ARCH_APPLE
  ARM: PXA: Fix cplds irqdesc allocation when using legacy mode

4 years agoMerge tag 'x86_urgent_for_v5.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 23 May 2021 16:12:25 +0000 (06:12 -1000)] 
Merge tag 'x86_urgent_for_v5.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Fix how SEV handles MMIO accesses by forwarding potential page faults
   instead of killing the machine and by using the accessors with the
   exact functionality needed when accessing memory.

 - Fix a confusion with Clang LTO compiler switches passed to the it

 - Handle the case gracefully when VMGEXIT has been executed in
   userspace

* tag 'x86_urgent_for_v5.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sev-es: Use __put_user()/__get_user() for data accesses
  x86/sev-es: Forward page-faults which happen during emulation
  x86/sev-es: Don't return NULL from sev_es_get_ghcb()
  x86/build: Fix location of '-plugin-opt=' flags
  x86/sev-es: Invalidate the GHCB after completing VMGEXIT
  x86/sev-es: Move sev_es_put_ghcb() in prep for follow on patch

4 years agoMerge tag 'powerpc-5.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 23 May 2021 16:07:33 +0000 (06:07 -1000)] 
Merge tag 'powerpc-5.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix breakage of strace (and other ptracers etc.) when using the new
   scv ABI (Power9 or later with glibc >= 2.33).

 - Fix early_ioremap() on 64-bit, which broke booting on some machines.

Thanks to Dmitry V. Levin, Nicholas Piggin, Alexey Kardashevskiy, and
Christophe Leroy.

* tag 'powerpc-5.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s/syscall: Fix ptrace syscall info with scv syscalls
  powerpc/64s/syscall: Use pt_regs.trap to distinguish syscall ABI difference between sc and scv syscalls
  powerpc: Fix early setup to make early_ioremap() work

4 years agoMerge tag 'kbuild-fixes-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masah...
Linus Torvalds [Sun, 23 May 2021 05:53:56 +0000 (19:53 -1000)] 
Merge tag 'kbuild-fixes-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix short log indentation for tools builds

 - Fix dummy-tools to adjust to the latest stackprotector check

* tag 'kbuild-fixes-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: dummy-tools: adjust to stricter stackprotector check
  scripts/jobserver-exec: Fix a typo ("envirnoment")
  tools build: Fix quiet cmd indentation

4 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Sun, 23 May 2021 01:20:20 +0000 (15:20 -1000)] 
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "10 patches.

  Subsystems affected by this patch series: mm (pagealloc, gup, kasan,
  and userfaultfd), ipc, selftests, watchdog, bitmap, procfs, and lib"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  userfaultfd: hugetlbfs: fix new flag usage in error path
  lib: kunit: suppress a compilation warning of frame size
  proc: remove Alexey from MAINTAINERS
  linux/bits.h: fix compilation error with GENMASK
  watchdog: reliable handling of timestamps
  kasan: slab: always reset the tag in get_freepointer_safe()
  tools/testing/selftests/exec: fix link error
  ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry
  Revert "mm/gup: check page posion status for coredump."
  mm/shuffle: fix section mismatch warning

4 years agouserfaultfd: hugetlbfs: fix new flag usage in error path
Mike Kravetz [Sun, 23 May 2021 00:42:11 +0000 (17:42 -0700)] 
userfaultfd: hugetlbfs: fix new flag usage in error path

In commit d6995da31122 ("hugetlb: use page.private for hugetlb specific
page flags") the use of PagePrivate to indicate a reservation count
should be restored at free time was changed to the hugetlb specific flag
HPageRestoreReserve.  Changes to a userfaultfd error path as well as a
VM_BUG_ON() in remove_inode_hugepages() were overlooked.

Users could see incorrect hugetlb reserve counts if they experience an
error with a UFFDIO_COPY operation.  Specifically, this would be the
result of an unlikely copy_huge_page_from_user error.  There is not an
increased chance of hitting the VM_BUG_ON.

Link: https://lkml.kernel.org/r/20210521233952.236434-1-mike.kravetz@oracle.com
Fixes: d6995da31122 ("hugetlb: use page.private for hugetlb specific page flags")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Mina Almasry <almasry.mina@google.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agolib: kunit: suppress a compilation warning of frame size
Zhen Lei [Sun, 23 May 2021 00:42:08 +0000 (17:42 -0700)] 
lib: kunit: suppress a compilation warning of frame size

lib/bitfield_kunit.c: In function `test_bitfields_constants':
lib/bitfield_kunit.c:93:1: warning: the frame size of 7456 bytes is larger than 2048 bytes [-Wframe-larger-than=]
 }
 ^

As the description of BITFIELD_KUNIT in lib/Kconfig.debug, it "Only useful
for kernel devs running the KUnit test harness, and not intended for
inclusion into a production build".  Therefore, it is not worth modifying
variable 'test_bitfields_constants' to clear this warning.  Just suppress
it.

Link: https://lkml.kernel.org/r/20210518094533.7652-1-thunder.leizhen@huawei.com
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Vitor Massaru Iha <vitor@massaru.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoproc: remove Alexey from MAINTAINERS
Alexey Dobriyan [Sun, 23 May 2021 00:42:05 +0000 (17:42 -0700)] 
proc: remove Alexey from MAINTAINERS

People Cc me and I don't have time.

Link: https://lkml.kernel.org/r/YKarMxHJBIhMHQIh@localhost.localdomain
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agolinux/bits.h: fix compilation error with GENMASK
Rikard Falkeborn [Sun, 23 May 2021 00:42:02 +0000 (17:42 -0700)] 
linux/bits.h: fix compilation error with GENMASK

GENMASK() has an input check which uses __builtin_choose_expr() to
enable a compile time sanity check of its inputs if they are known at
compile time.

However, it turns out that __builtin_constant_p() does not always return
a compile time constant [0].  It was thought this problem was fixed with
gcc 4.9 [1], but apparently this is not the case [2].

Switch to use __is_constexpr() instead which always returns a compile time
constant, regardless of its inputs.

Link: https://lore.kernel.org/lkml/42b4342b-aefc-a16a-0d43-9f9c0d63ba7a@rasmusvillemoes.dk
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19449
Link: https://lore.kernel.org/lkml/1ac7bbc2-45d9-26ed-0b33-bf382b8d858b@I-love.SAKURA.ne.jp
Link: https://lkml.kernel.org/r/20210511203716.117010-1-rikard.falkeborn@gmail.com
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Yury Norov <yury.norov@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agowatchdog: reliable handling of timestamps
Petr Mladek [Sun, 23 May 2021 00:41:59 +0000 (17:41 -0700)] 
watchdog: reliable handling of timestamps

Commit 9bf3bc949f8a ("watchdog: cleanup handling of false positives")
tried to handle a virtual host stopped by the host a more
straightforward and cleaner way.

But it introduced a risk of false softlockup reports.  The virtual host
might be stopped at any time, for example between
kvm_check_and_clear_guest_paused() and is_softlockup().  As a result,
is_softlockup() might read the updated jiffies and detects a softlockup.

A solution might be to put back kvm_check_and_clear_guest_paused() after
is_softlockup() and detect it.  But it would put back the cycle that
complicates the logic.

In fact, the handling of all the timestamps is not reliable.  The code
does not guarantee when and how many times the timestamps are read.  For
example, "period_ts" might be touched anytime also from NMI and re-read in
is_softlockup().  It works just by chance.

Fix all the problems by making the code even more explicit.

1. Make sure that "now" and "period_ts" timestamps are read only once.
   They might be changed at anytime by NMI or when the virtual guest is
   stopped by the host.  Note that "now" timestamp does this implicitly
   because "jiffies" is marked volatile.

2. "now" time must be read first.  The state of "period_ts" will
   decide whether it will be used or the period will get restarted.

3. kvm_check_and_clear_guest_paused() must be called before reading
   "period_ts".  It touches the variable when the guest was stopped.

As a result, "now" timestamp is used only when the watchdog was not
touched and the guest not stopped in the meantime.  "period_ts" is
restarted in all other situations.

Link: https://lkml.kernel.org/r/YKT55gw+RZfyoFf7@alley
Fixes: 9bf3bc949f8aeefeacea4b ("watchdog: cleanup handling of false positives")
Signed-off-by: Petr Mladek <pmladek@suse.com>
Reported-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agokasan: slab: always reset the tag in get_freepointer_safe()
Alexander Potapenko [Sun, 23 May 2021 00:41:56 +0000 (17:41 -0700)] 
kasan: slab: always reset the tag in get_freepointer_safe()

With CONFIG_DEBUG_PAGEALLOC enabled, the kernel should also untag the
object pointer, as done in get_freepointer().

Failing to do so reportedly leads to SLUB freelist corruptions that
manifest as boot-time crashes.

Link: https://lkml.kernel.org/r/20210514072228.534418-1-glider@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Elliot Berman <eberman@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agotools/testing/selftests/exec: fix link error
Yang Yingliang [Sun, 23 May 2021 00:41:53 +0000 (17:41 -0700)] 
tools/testing/selftests/exec: fix link error

Fix the link error by adding '-static':

  gcc -Wall  -Wl,-z,max-page-size=0x1000 -pie load_address.c -o /home/yang/linux/tools/testing/selftests/exec/load_address_4096
  /usr/bin/ld: /tmp/ccopEGun.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `stderr@@GLIBC_2.17' which may bind externally can not be used when making a shared object; recompile with -fPIC
  /usr/bin/ld: /tmp/ccopEGun.o(.text+0x158): unresolvable R_AARCH64_ADR_PREL_PG_HI21 relocation against symbol `stderr@@GLIBC_2.17'
  /usr/bin/ld: final link failed: bad value
  collect2: error: ld returned 1 exit status
  make: *** [Makefile:25: tools/testing/selftests/exec/load_address_4096] Error 1

Link: https://lkml.kernel.org/r/20210514092422.2367367-1-yangyingliang@huawei.com
Fixes: 206e22f01941 ("tools/testing/selftests: add self-test for verifying load alignment")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Cc: Chris Kennelly <ckennelly@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry
Varad Gautam [Sun, 23 May 2021 00:41:49 +0000 (17:41 -0700)] 
ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry

do_mq_timedreceive calls wq_sleep with a stack local address.  The
sender (do_mq_timedsend) uses this address to later call pipelined_send.

This leads to a very hard to trigger race where a do_mq_timedreceive
call might return and leave do_mq_timedsend to rely on an invalid
address, causing the following crash:

  RIP: 0010:wake_q_add_safe+0x13/0x60
  Call Trace:
   __x64_sys_mq_timedsend+0x2a9/0x490
   do_syscall_64+0x80/0x680
   entry_SYSCALL_64_after_hwframe+0x44/0xa9
  RIP: 0033:0x7f5928e40343

The race occurs as:

1. do_mq_timedreceive calls wq_sleep with the address of `struct
   ext_wait_queue` on function stack (aliased as `ewq_addr` here) - it
   holds a valid `struct ext_wait_queue *` as long as the stack has not
   been overwritten.

2. `ewq_addr` gets added to info->e_wait_q[RECV].list in wq_add, and
   do_mq_timedsend receives it via wq_get_first_waiter(info, RECV) to call
   __pipelined_op.

3. Sender calls __pipelined_op::smp_store_release(&this->state,
   STATE_READY).  Here is where the race window begins.  (`this` is
   `ewq_addr`.)

4. If the receiver wakes up now in do_mq_timedreceive::wq_sleep, it
   will see `state == STATE_READY` and break.

5. do_mq_timedreceive returns, and `ewq_addr` is no longer guaranteed
   to be a `struct ext_wait_queue *` since it was on do_mq_timedreceive's
   stack.  (Although the address may not get overwritten until another
   function happens to touch it, which means it can persist around for an
   indefinite time.)

6. do_mq_timedsend::__pipelined_op() still believes `ewq_addr` is a
   `struct ext_wait_queue *`, and uses it to find a task_struct to pass to
   the wake_q_add_safe call.  In the lucky case where nothing has
   overwritten `ewq_addr` yet, `ewq_addr->task` is the right task_struct.
   In the unlucky case, __pipelined_op::wake_q_add_safe gets handed a
   bogus address as the receiver's task_struct causing the crash.

do_mq_timedsend::__pipelined_op() should not dereference `this` after
setting STATE_READY, as the receiver counterpart is now free to return.
Change __pipelined_op to call wake_q_add_safe on the receiver's
task_struct returned by get_task_struct, instead of dereferencing `this`
which sits on the receiver's stack.

As Manfred pointed out, the race potentially also exists in
ipc/msg.c::expunge_all and ipc/sem.c::wake_up_sem_queue_prepare.  Fix
those in the same way.

Link: https://lkml.kernel.org/r/20210510102950.12551-1-varad.gautam@suse.com
Fixes: c5b2cbdbdac563 ("ipc/mqueue.c: update/document memory barriers")
Fixes: 8116b54e7e23ef ("ipc/sem.c: document and update memory barriers")
Fixes: 0d97a82ba830d8 ("ipc/msg.c: update and document memory barriers")
Signed-off-by: Varad Gautam <varad.gautam@suse.com>
Reported-by: Matthias von Faber <matthias.vonfaber@aox-tech.de>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoRevert "mm/gup: check page posion status for coredump."
Michal Hocko [Sun, 23 May 2021 00:41:46 +0000 (17:41 -0700)] 
Revert "mm/gup: check page posion status for coredump."

While reviewing [1] I came across commit d3378e86d182 ("mm/gup: check
page posion status for coredump.") and noticed that this patch is broken
in two ways.  First it doesn't really prevent hwpoison pages from being
dumped because hwpoison pages can be marked asynchornously at any time
after the check.  Secondly, and more importantly, the patch introduces a
ref count leak because get_dump_page takes a reference on the page which
is not released.

It also seems that the patch was merged incorrectly because there were
follow up changes not included as well as discussions on how to address
the underlying problem [2]

Therefore revert the original patch.

Link: http://lkml.kernel.org/r/20210429122519.15183-4-david@redhat.com
Link: http://lkml.kernel.org/r/57ac524c-b49a-99ec-c1e4-ef5027bfb61b@redhat.com
Link: https://lkml.kernel.org/r/20210505135407.31590-1-mhocko@kernel.org
Fixes: d3378e86d182 ("mm/gup: check page posion status for coredump.")
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Aili Yao <yaoaili@kingsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomm/shuffle: fix section mismatch warning
Arnd Bergmann [Sun, 23 May 2021 00:41:43 +0000 (17:41 -0700)] 
mm/shuffle: fix section mismatch warning

clang sometimes decides not to inline shuffle_zone(), but it calls a
__meminit function.  Without the extra __meminit annotation we get this
warning:

  WARNING: modpost: vmlinux.o(.text+0x2a86d4): Section mismatch in reference from the function shuffle_zone() to the function .meminit.text:__shuffle_zone()
  The function shuffle_zone() references
  the function __meminit __shuffle_zone().
  This is often because shuffle_zone lacks a __meminit
  annotation or the annotation of __shuffle_zone is wrong.

shuffle_free_memory() did not show the same problem in my tests, but it
could happen in theory as well, so mark both as __meminit.

Link: https://lkml.kernel.org/r/20210514135952.2928094-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoMerge tag 'block-5.13-2021-05-22' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 22 May 2021 17:40:34 +0000 (07:40 -1000)] 
Merge tag 'block-5.13-2021-05-22' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - Fix BLKRRPART and deletion race (Gulam, Christoph)

 - NVMe pull request (Christoph):
      - nvme-tcp corruption and timeout fixes (Sagi Grimberg, Keith
        Busch)
      - nvme-fc teardown fix (James Smart)
      - nvmet/nvme-loop memory leak fixes (Wu Bo)"

* tag 'block-5.13-2021-05-22' of git://git.kernel.dk/linux-block:
  block: fix a race between del_gendisk and BLKRRPART
  block: prevent block device lookups at the beginning of del_gendisk
  nvme-fc: clear q_live at beginning of association teardown
  nvme-tcp: rerun io_work if req_list is not empty
  nvme-tcp: fix possible use-after-completion
  nvme-loop: fix memory leak in nvme_loop_create_ctrl()
  nvmet: fix memory leak in nvmet_alloc_ctrl()

4 years agoMerge tag 'io_uring-5.13-2021-05-22' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 22 May 2021 17:36:36 +0000 (07:36 -1000)] 
Merge tag 'io_uring-5.13-2021-05-22' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "One fix for a regression with poll in this merge window, and another
  just hardens the io-wq exit path a bit"

* tag 'io_uring-5.13-2021-05-22' of git://git.kernel.dk/linux-block:
  io_uring: fortify tctx/io_wq cleanup
  io_uring: don't modify req->poll for rw

4 years agoMerge tag 'for-linus-5.13b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 22 May 2021 17:33:09 +0000 (07:33 -1000)] 
Merge tag 'for-linus-5.13b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - a fix for a boot regression when running as PV guest on hardware
   without NX support

 - a small series fixing a bug in the Xen pciback driver when
   configuring a PCI card with multiple virtual functions

* tag 'for-linus-5.13b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen-pciback: reconfigure also from backend watch handler
  xen-pciback: redo VF placement in the virtual topology
  x86/Xen: swap NX determination and GDT setup on BSP

4 years agoMerge tag 'xfs-5.13-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Sat, 22 May 2021 04:45:09 +0000 (18:45 -1000)] 
Merge tag 'xfs-5.13-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Darrick Wong:

 - Fix some math errors in the realtime allocator when extent size hints
   are applied.

 - Fix unnecessary short writes to realtime files when free space is
   fragmented.

 - Fix a crash when using scrub tracepoints.

 - Restore ioctl uapi definitions that were accidentally removed in
   5.13-rc1.

* tag 'xfs-5.13-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: restore old ioctl definitions
  xfs: fix deadlock retry tracepoint arguments
  xfs: retry allocations when locality-based search fails
  xfs: adjust rt allocation minlen when extszhint > rtextsize

4 years agoMerge tag 'for-5.13-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
Linus Torvalds [Fri, 21 May 2021 23:24:12 +0000 (13:24 -1000)] 
Merge tag 'for-5.13-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "A few more fixes:

   - fix unaligned compressed writes in zoned mode

   - fix false positive lockdep warning when cloning inline extent

   - remove wrong BUG_ON in tree-log error handling"

* tag 'for-5.13-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: zoned: fix parallel compressed writes
  btrfs: zoned: pass start block to btrfs_use_zone_append
  btrfs: do not BUG_ON in link_to_fixup_dir
  btrfs: release path before starting transaction when cloning inline extent

4 years agoMerge tag '5.13-rc3-smb3' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 21 May 2021 23:12:51 +0000 (13:12 -1000)] 
Merge tag '5.13-rc3-smb3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Seven smb3 fixes: one for stable, three others fix problems found in
  testing handle leases, and a compounded request fix"

* tag '5.13-rc3-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  Fix KASAN identified use-after-free issue.
  Defer close only when lease is enabled.
  Fix kernel oops when CONFIG_DEBUG_ATOMIC_SLEEP is enabled.
  cifs: Fix inconsistent indenting
  cifs: fix memory leak in smb2_copychunk_range
  SMB3: incorrect file id in requests compounded with open
  cifs: remove deadstore in cifs_close_all_deferred_files()

4 years agoMerge tag 'gpio-fixes-for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 21 May 2021 23:11:00 +0000 (13:11 -1000)] 
Merge tag 'gpio-fixes-for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:

 - add missing MODULE_DEVICE_TABLE in gpio-cadence

 - fix a kernel doc validator error in gpio-xilinx

 - don't set parent IRQ affinity in gpio-tegra186

* tag 'gpio-fixes-for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: tegra186: Don't set parent IRQ affinity
  gpio: xilinx: Correct kernel doc for xgpio_probe()
  gpio: cadence: Add missing MODULE_DEVICE_TABLE

4 years agoMerge tag 'mmc-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 21 May 2021 16:31:34 +0000 (06:31 -1000)] 
Merge tag 'mmc-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC host fixes from Ulf Hansson:

 - Fix SD-card detection on Intel NUC10i3FNK4 (GL9755)

 - Replace WARN_ONCE with dev_warn_once for scatterlist offsets

 - Extend check of scatterlist size alignment with SD_IO_RW_EXTENDED

* tag 'mmc-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-pci-gli: increase 1.8V regulator wait
  mmc: meson-gx: also check SD_IO_RW_EXTENDED for scatterlist size alignment
  mmc: meson-gx: make replace WARN_ONCE with dev_warn_once about scatterlist offset alignment

4 years agoMerge tag 'devicetree-fixes-for-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 21 May 2021 16:24:45 +0000 (06:24 -1000)] 
Merge tag 'devicetree-fixes-for-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Another batch of removing unneeded type references in schemas

 - Fix some out of date filename references

 - Convert renesas,drif schema to use DT graph schema

* tag 'devicetree-fixes-for-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  dt-bindings: More removals of type references on common properties
  dt-bindings: media: renesas,drif: Use graph schema
  leds: Fix reference file name of documentation
  dt-bindings: phy: cadence-torrent: update reference file of docs

4 years agoMerge branch 'for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ebieder...
Linus Torvalds [Fri, 21 May 2021 16:12:52 +0000 (06:12 -1000)] 
Merge branch 'for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

Pull siginfo fix from Eric Biederman:
 "During the merge window an issue with si_perf and the siginfo ABI came
  up. The alpha and sparc siginfo structure layout had changed with the
  addition of SIGTRAP TRAP_PERF and the new field si_perf.

  The reason only alpha and sparc were affected is that they are the
  only architectures that use si_trapno.

  Looking deeper it was discovered that si_trapno is used for only a few
  select signals on alpha and sparc, and that none of the other
  _sigfault fields past si_addr are used at all. Which means technically
  no regression on alpha and sparc.

  While the alignment concerns might be dismissed the abuse of si_errno
  by SIGTRAP TRAP_PERF does have the potential to cause regressions in
  existing userspace.

  While we still have time before userspace starts using and depending
  on the new definition siginfo for SIGTRAP TRAP_PERF this set of
  changes cleans up siginfo_t.

   - The si_trapno field is demoted from magic alpha and sparc status
     and made an ordinary union member of the _sigfault member of
     siginfo_t. Without moving it of course.

   - si_perf is replaced with si_perf_data and si_perf_type ending the
     abuse of si_errno.

   - Unnecessary additions to signalfd_siginfo are removed"

* 'for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  signalfd: Remove SIL_PERF_EVENT fields from signalfd_siginfo
  signal: Deliver all of the siginfo perf data in _perf
  signal: Factor force_sig_perf out of perf_sigtrap
  signal: Implement SIL_FAULT_TRAPNO
  siginfo: Move si_trapno inside the union inside _si_fault

4 years agoMerge tag 'modules-for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 21 May 2021 16:09:17 +0000 (06:09 -1000)] 
Merge tag 'modules-for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull module fix from Jessica Yu:
 "When CONFIG_MODULE_UNLOAD=n, module exit sections get sorted into the
  init region of the module in order to satisfy the requirements of
  jump_labels and static_calls.

  Previously, the exit section check was done in module_init_section(),
  but the solution there is not completely arch-indepedent as ARM is a
  special case and supplies its own module_init_section() function.

  Instead of pushing this logic further to the arch-specific code,
  switch to an arch-independent solution to check for module exit
  sections in the core module loader code in layout_sections() instead"

* tag 'modules-for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: check for exit sections in layout_sections() instead of module_init_section()

4 years agoMerge tag 'for-linus' of git://github.com/openrisc/linux
Linus Torvalds [Fri, 21 May 2021 16:06:19 +0000 (06:06 -1000)] 
Merge tag 'for-linus' of git://github.com/openrisc/linux

Pull OpenRISC fixes from Stafford Horne:
 "A few fixes that came in around the time of the merge window"

* tag 'for-linus' of git://github.com/openrisc/linux:
  openrisc: Define memory barrier mb
  openrisc: mm/init.c: remove unused variable 'end' in paging_init()
  openrisc: mm/init.c: remove unused memblock_region variable in map_ram()
  openrisc: Fix a memory leak

4 years agoxen-pciback: reconfigure also from backend watch handler
Jan Beulich [Tue, 18 May 2021 16:14:07 +0000 (18:14 +0200)] 
xen-pciback: reconfigure also from backend watch handler

When multiple PCI devices get assigned to a guest right at boot, libxl
incrementally populates the backend tree. The writes for the first of
the devices trigger the backend watch. In turn xen_pcibk_setup_backend()
will set the XenBus state to Initialised, at which point no further
reconfigures would happen unless a device got hotplugged. Arrange for
reconfigure to also get triggered from the backend watch handler.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: stable@vger.kernel.org
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/2337cbd6-94b9-4187-9862-c03ea12e0c61@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
4 years agoxen-pciback: redo VF placement in the virtual topology
Jan Beulich [Tue, 18 May 2021 16:13:42 +0000 (18:13 +0200)] 
xen-pciback: redo VF placement in the virtual topology

The commit referenced below was incomplete: It merely affected what
would get written to the vdev-<N> xenstore node. The guest would still
find the function at the original function number as long as
__xen_pcibk_get_pci_dev() wouldn't be in sync. The same goes for AER wrt
__xen_pcibk_get_pcifront_dev().

Undo overriding the function to zero and instead make sure that VFs at
function zero remain alone in their slot. This has the added benefit of
improving overall capacity, considering that there's only a total of 32
slots available right now (PCI segment and bus can both only ever be
zero at present).

Fixes: 8a5248fe10b1 ("xen PV passthru: assign SR-IOV virtual functions to separate virtual slots")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: stable@vger.kernel.org
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/8def783b-404c-3452-196d-3f3fd4d72c9e@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
4 years agox86/Xen: swap NX determination and GDT setup on BSP
Jan Beulich [Thu, 20 May 2021 11:42:42 +0000 (13:42 +0200)] 
x86/Xen: swap NX determination and GDT setup on BSP

xen_setup_gdt(), via xen_load_gdt_boot(), wants to adjust page tables.
For this to work when NX is not available, x86_configure_nx() needs to
be called first.

[jgross] Note that this is a revert of 36104cb9012a82e73 ("x86/xen:
Delay get_cpu_cap until stack canary is established"), which is possible
now that we no longer support running as PV guest in 32-bit mode.

Cc: <stable.vger.kernel.org> # 5.9
Fixes: 36104cb9012a82e73 ("x86/xen: Delay get_cpu_cap until stack canary is established")
Reported-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/12a866b0-9e89-59f7-ebeb-a2a6cec0987a@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
4 years agoMerge tag 'drm-fixes-2021-05-21-1' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 21 May 2021 06:15:43 +0000 (20:15 -1000)] 
Merge tag 'drm-fixes-2021-05-21-1' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Usual collection, mostly amdgpu and some i915 regression fixes. I
  nearly managed to hose my build/sign machine this week, but I
  recovered it just in time, and I even got clang12 built.

  dma-buf:
   - WARN fix

  amdgpu:
   - Fix downscaling ratio on DCN3.x
   - Fix for non-4K pages
   - PCO/RV compute hang fix
   - Dongle fix
   - Aldebaran codec query support
   - Refcount leak fix
   - Use after free fix
   - Navi12 golden settings updates
   - GPU reset fixes

  radeon:
   - Fix for imported BO handling

  i915:
   - Pin the L-shape quirked object as unshrinkable to fix crashes
   - Disable HiZ Raw Stall Optimization on broken gen7 to fix glitches,
     gfx corruption
   - GVT: Move mdev attribute groups into kvmgt module to fix kconfig
     deps issue

  exynos:
   - Correct kerneldoc of fimd_shadow_protect_win function
   - Drop redundant error messages"

* tag 'drm-fixes-2021-05-21-1' of git://anongit.freedesktop.org/drm/drm:
  dma-buf: fix unintended pin/unpin warnings
  drm/amdgpu: stop touching sched.ready in the backend
  drm/amd/amdgpu: fix a potential deadlock in gpu reset
  drm/amdgpu: update sdma golden setting for Navi12
  drm/amdgpu: update gc golden setting for Navi12
  drm/amdgpu: Fix a use-after-free
  drm/amdgpu: add video_codecs query support for aldebaran
  drm/amd/amdgpu: fix refcount leak
  drm/amd/display: Disconnect non-DP with no EDID
  drm/amdgpu: disable 3DCGCG on picasso/raven1 to avoid compute hang
  drm/amdgpu: Fix GPU TLB update error when PAGE_SIZE > AMDGPU_PAGE_SIZE
  drm/radeon: use the dummy page for GART if needed
  drm/amd/display: Use the correct max downscaling value for DCN3.x family
  drm/i915/gt: Disable HiZ Raw Stall Optimization on broken gen7
  drm/i915/gem: Pin the L-shape quirked object as unshrinkable
  drm/exynos/decon5433: Remove redundant error printing in exynos5433_decon_probe()
  drm/exynos: Remove redundant error printing in exynos_dsi_probe()
  drm/exynos: correct exynos_drm_fimd kerneldoc
  drm/i915/gvt: Move mdev attribute groups into kvmgt module

4 years agoMerge tag 'amd-drm-fixes-5.13-2021-05-19' of https://gitlab.freedesktop.org/agd5f...
Dave Airlie [Fri, 21 May 2021 04:08:04 +0000 (14:08 +1000)] 
Merge tag 'amd-drm-fixes-5.13-2021-05-19' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-5.13-2021-05-19:

amdgpu:
- Fix downscaling ratio on DCN3.x
- Fix for non-4K pages
- PCO/RV compute hang fix
- Dongle fix
- Aldebaran codec query support
- Refcount leak fix
- Use after free fix
- Navi12 golden settings updates
- GPU reset fixes

radeon:
- Fix for imported BO handling

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210520022500.4023-1-alexander.deucher@amd.com
4 years agoMerge tag 'drm-intel-fixes-2021-05-20' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Fri, 21 May 2021 03:41:41 +0000 (13:41 +1000)] 
Merge tag 'drm-intel-fixes-2021-05-20' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.13-rc3:
- Pin the L-shape quirked object as unshrinkable to fix crashes
- Disable HiZ Raw Stall Optimization on broken gen7 to fix glitches, gfx corruption
- GVT: Move mdev attribute groups into kvmgt module to fix kconfig deps issue

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87a6opehx6.fsf@intel.com
4 years agoMerge tag 'drm-misc-fixes-2021-05-20' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Fri, 21 May 2021 01:10:04 +0000 (11:10 +1000)] 
Merge tag 'drm-misc-fixes-2021-05-20' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Just a single fix for a dma-buf related WARN

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210520140808.ds6bk6i3oarmiea6@gilmour
4 years agoMerge tag 'exynos-drm-fixes-for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux...
Dave Airlie [Fri, 21 May 2021 01:02:24 +0000 (11:02 +1000)] 
Merge tag 'exynos-drm-fixes-for-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes

Fixup
- Correct kerneldoc of fimd_shadow_protect_win function.

Cleanup
- Drop redundant error messages.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210520034747.257687-1-inki.dae@samsung.com
4 years agoMerge tag 'arm-soc-fixes-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 21 May 2021 00:46:26 +0000 (14:46 -1000)] 
Merge tag 'arm-soc-fixes-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Only a small number of fixes so far, including some that I had applied
  during the merge window, so this is based on the original merge of the
  other branches.

   - The largest change is a fix for a reference counting bug in the AMD
     TEE driver.

   - Neil Armstrong now co-maintains Amlogic SoC support

   - Two build warning fixes for renesas device tree files

   - A sign expansion bug for optee

   - A DT binding fix for a mismerge"

* tag 'arm-soc-fixes-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: npcm: wpcm450: select interrupt controller driver
  MAINTAINERS: ARM/Amlogic SoCs: add Neil as primary maintainer
  tee: amdtee: unload TA only when its refcount becomes 0
  dt-bindings: nvmem: mediatek: remove duplicate mt8192 line
  firmware: arm_scmi: Remove duplicate declaration of struct scmi_protocol_handle
  firmware: arm_scpi: Prevent the ternary sign expansion bug
  arm64: dts: renesas: Add port@0 node for all CSI-2 nodes to dtsi
  arm64: dts: renesas: aistarvision-mipi-adapter-2.1: Fix CSI40 ports

4 years agoMerge branch 'urgent.2021.05.20a' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 21 May 2021 00:43:33 +0000 (14:43 -1000)] 
Merge branch 'urgent.2021.05.20a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull kcsan fix from Paul McKenney:
 "Fix for a regression introduced in this merge window by commit
  e36299efe7d7 ("kcsan, debugfs: Move debugfs file creation out of early
  init").

  The regression is not easy to trigger, requiring a KCSAN build using
  clang with CONFIG_LTO_CLANG=y. The fix is to simply make the
  kcsan_debugfs_init() function's type initcall-compatible. This has
  been posted to the relevant mailing lists:"

* 'urgent.2021.05.20a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  kcsan: Fix debugfs initcall return type

4 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 21 May 2021 00:41:35 +0000 (14:41 -1000)] 
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Eight small fixes, all in drivers"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: pm80xx: Fix drives missing during rmmod/insmod loop
  scsi: qla2xxx: Fix error return code in qla82xx_write_flash_dword()
  scsi: qedf: Add pointer checks in qedf_update_link_speed()
  scsi: ufs: core: Increase the usable queue depth
  scsi: BusLogic: Fix 64-bit system enumeration error for Buslogic
  scsi: ufs: ufs-mediatek: Fix power down spec violation

4 years agoMerge tag 'for-5.13/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
Linus Torvalds [Fri, 21 May 2021 00:36:21 +0000 (14:36 -1000)] 
Merge tag 'for-5.13/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - Fix a couple DM snapshot target crashes exposed by user-error.

 - Fix DM integrity target to not use discard optimization, introduced
   during 5.13 merge, when recalulating.

 - Fix some sparse warnings in DM integrity target.

* tag 'for-5.13/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm integrity: fix sparse warnings
  dm integrity: revert to not using discard filler when recalulating
  dm snapshot: fix crash with transient storage and zero chunk size
  dm snapshot: fix a crash when an origin has no snapshots

4 years agoFix KASAN identified use-after-free issue.
Rohith Surabattula [Thu, 20 May 2021 16:45:01 +0000 (16:45 +0000)] 
Fix KASAN identified use-after-free issue.

[  612.157429] ==================================================================
[  612.158275] BUG: KASAN: use-after-free in process_one_work+0x90/0x9b0
[  612.158801] Read of size 8 at addr ffff88810a31ca60 by task kworker/2:9/2382

[  612.159611] CPU: 2 PID: 2382 Comm: kworker/2:9 Tainted: G
OE     5.13.0-rc2+ #98
[  612.159623] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.14.0-1.fc33 04/01/2014
[  612.159640] Workqueue:  0x0 (deferredclose)
[  612.159669] Call Trace:
[  612.159685]  dump_stack+0xbb/0x107
[  612.159711]  print_address_description.constprop.0+0x18/0x140
[  612.159733]  ? process_one_work+0x90/0x9b0
[  612.159743]  ? process_one_work+0x90/0x9b0
[  612.159754]  kasan_report.cold+0x7c/0xd8
[  612.159778]  ? lock_is_held_type+0x80/0x130
[  612.159789]  ? process_one_work+0x90/0x9b0
[  612.159812]  kasan_check_range+0x145/0x1a0
[  612.159834]  process_one_work+0x90/0x9b0
[  612.159877]  ? pwq_dec_nr_in_flight+0x110/0x110
[  612.159914]  ? spin_bug+0x90/0x90
[  612.159967]  worker_thread+0x3b6/0x6c0
[  612.160023]  ? process_one_work+0x9b0/0x9b0
[  612.160038]  kthread+0x1dc/0x200
[  612.160051]  ? kthread_create_worker_on_cpu+0xd0/0xd0
[  612.160092]  ret_from_fork+0x1f/0x30

[  612.160399] Allocated by task 2358:
[  612.160757]  kasan_save_stack+0x1b/0x40
[  612.160768]  __kasan_kmalloc+0x9b/0xd0
[  612.160778]  cifs_new_fileinfo+0xb0/0x960 [cifs]
[  612.161170]  cifs_open+0xadf/0xf20 [cifs]
[  612.161421]  do_dentry_open+0x2aa/0x6b0
[  612.161432]  path_openat+0xbd9/0xfa0
[  612.161441]  do_filp_open+0x11d/0x230
[  612.161450]  do_sys_openat2+0x115/0x240
[  612.161460]  __x64_sys_openat+0xce/0x140

When mod_delayed_work is called to modify the delay of pending work,
it might return false and queue a new work when pending work is
already scheduled or when try to grab pending work failed.

So, Increase the reference count when new work is scheduled to
avoid use-after-free.

Signed-off-by: Rohith Surabattula <rohiths@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
4 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Thu, 20 May 2021 16:44:04 +0000 (06:44 -1000)] 
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "A mixture of small bug fixes, most for longer standing problems:

   - NULL pointer crash in siw

   - Various error unwind bugs in siw, rxe, cm

   - User triggerable errors in uverbs

   - Minor bugs in mlx5 and rxe drivers"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/uverbs: Fix a NULL vs IS_ERR() bug
  RDMA/mlx5: Fix query DCT via DEVX
  RDMA/core: Don't access cm_id after its destruction
  RDMA/rxe: Return CQE error if invalid lkey was supplied
  RDMA/mlx5: Recover from fatal event in dual port mode
  RDMA/mlx5: Verify that DM operation is reasonable
  RDMA/rxe: Clear all QP fields if creation failed
  RDMA/core: Prevent divide-by-zero error triggered by the user
  RDMA/siw: Release xarray entry
  RDMA/siw: Properly check send and receive CQ pointers

4 years agoMerge tag 'sound-5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Thu, 20 May 2021 16:42:21 +0000 (06:42 -1000)] 
Merge tag 'sound-5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "All small device-specific fixes here: a series of FireWire audio
  fixes, UAF and other fixes in USB-audio and co spotted by fuzzer,
  and a few HD-audio quirks as usual"

* tag 'sound-5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: line6: Fix racy initialization of LINE6 MIDI
  ALSA: dice: fix stream format for TC Electronic Konnekt Live at high sampling transfer frequency
  ALSA: dice: disable double_pcm_frames mode for M-Audio Profire 610, 2626 and Avid M-Box 3 Pro
  ALSA: intel8x0: Don't update period unless prepared
  ALSA: hda/realtek: Add some CLOVE SSIDs of ALC293
  ALSA: firewire-lib: fix amdtp_packet tracepoints event for packet_index field
  ALSA: firewire-lib: fix calculation for size of IR context payload
  ALSA: firewire-lib: fix check for the size of isochronous packet payload
  ALSA: bebob/oxfw: fix Kconfig entry for Mackie d.2 Pro
  ALSA: dice: fix stream format at middle sampling rate for Alesis iO 26
  ALSA: hda/realtek: Add fixup for HP Spectre x360 15-df0xxx
  ALSA: usb-audio: Fix potential out-of-bounce access in MIDI EP parser
  ALSA: usb-audio: Validate MS endpoint descriptors
  ALSA: hda: fixup headset for ASUS GU502 laptop
  ALSA: hda/realtek: reset eapd coeff to default value for alc287

4 years agoMerge tag 'platform-drivers-x86-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 20 May 2021 16:40:20 +0000 (06:40 -1000)] 
Merge tag 'platform-drivers-x86-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver fixes from Hans de Goede:
 "Assorted pdx86 bug-fixes and model-specific quirks for 5.13"

* tag 'platform-drivers-x86-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86: touchscreen_dmi: Add info for the Chuwi Hi10 Pro (CWI529) tablet
  platform/x86: touchscreen_dmi: Add info for the Mediacom Winpad 7.0 W700 tablet
  platform/x86: intel_punit_ipc: Append MODULE_DEVICE_TABLE for ACPI
  platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios
  platform/x86: hp-wireless: add AMD's hardware id to the supported list
  platform/x86: intel_int0002_vgpio: Only call enable_irq_wake() when using s2idle
  platform/x86: gigabyte-wmi: add support for B550 Aorus Elite
  platform/x86: gigabyte-wmi: add support for X570 UD
  platform/x86: gigabyte-wmi: streamline dmi matching
  platform/mellanox: mlxbf-tmfifo: Fix a memory barrier issue
  platform/surface: dtx: Fix poll function
  platform/surface: aggregator: Add platform-drivers-x86 list to MAINTAINERS entry
  platform/surface: aggregator: avoid clang -Wconstant-conversion warning
  platform/surface: aggregator: Do not mark interrupt as shared
  platform/x86: hp_accel: Avoid invoking _INI to speed up resume
  platform/x86: ideapad-laptop: fix method name typo
  platform/x86: ideapad-laptop: fix a NULL pointer dereference

4 years agoMerge tag 'char-misc-5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Thu, 20 May 2021 16:31:52 +0000 (06:31 -1000)] 
Merge tag 'char-misc-5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here is a big set of char/misc/other driver fixes for 5.13-rc3.

  The majority here is the fallout of the umn.edu re-review of all prior
  submissions. That resulted in a bunch of reverts along with the
  "correct" changes made, such that there is no regression of any of the
  potential fixes that were made by those individuals. I would like to
  thank the over 80 different developers who helped with the review and
  fixes for this mess.

  Other than that, there's a few habanna driver fixes for reported
  issues, and some dyndbg fixes for reported problems.

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (82 commits)
  misc: eeprom: at24: check suspend status before disable regulator
  uio_hv_generic: Fix another memory leak in error handling paths
  uio_hv_generic: Fix a memory leak in error handling paths
  uio/uio_pci_generic: fix return value changed in refactoring
  Revert "Revert "ALSA: usx2y: Fix potential NULL pointer dereference""
  dyndbg: drop uninformative vpr_info
  dyndbg: avoid calling dyndbg_emit_prefix when it has no work
  binder: Return EFAULT if we fail BINDER_ENABLE_ONEWAY_SPAM_DETECTION
  cdrom: gdrom: initialize global variable at init time
  brcmfmac: properly check for bus register errors
  Revert "brcmfmac: add a check for the status of usb_register"
  video: imsttfb: check for ioremap() failures
  Revert "video: imsttfb: fix potential NULL pointer dereferences"
  net: liquidio: Add missing null pointer checks
  Revert "net: liquidio: fix a NULL pointer dereference"
  media: gspca: properly check for errors in po1030_probe()
  Revert "media: gspca: Check the return value of write_bridge for timeout"
  media: gspca: mt9m111: Check write_bridge for timeout
  Revert "media: gspca: mt9m111: Check write_bridge for timeout"
  media: dvb: Add check on sp8870_readreg return
  ...

4 years agoMerge tag 'quota_for_v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 20 May 2021 16:20:15 +0000 (06:20 -1000)] 
Merge tag 'quota_for_v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull quota fixes from Jan Kara:
 "The most important part in the pull is disablement of the new syscall
  quotactl_path() which was added in rc1.

  The reason is some people at LWN discussion pointed out dirfd would be
  useful for this path based syscall and Christian Brauner agreed.

  Without dirfd it may be indeed problematic for containers. So let's
  just disable the syscall for now when it doesn't have users yet so
  that we have more time to mull over how to best specify the filesystem
  we want to work on"

* tag 'quota_for_v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  quota: Disable quotactl_path syscall
  quota: Use 'hlist_for_each_entry' to simplify code

4 years agoxfs: restore old ioctl definitions
Darrick J. Wong [Wed, 12 May 2021 23:43:10 +0000 (16:43 -0700)] 
xfs: restore old ioctl definitions

These ioctl definitions in xfs_fs.h are part of the userspace ABI and
were mistakenly removed during the 5.13 merge window.

Fixes: 9fefd5db08ce ("xfs: convert to fileattr")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
4 years agoxfs: fix deadlock retry tracepoint arguments
Darrick J. Wong [Wed, 12 May 2021 23:41:13 +0000 (16:41 -0700)] 
xfs: fix deadlock retry tracepoint arguments

sc->ip is the inode that's being scrubbed, which means that it's not set
for scrub types that don't involve inodes.  If one of those scrubbers
(e.g. inode btrees) returns EDEADLOCK, we'll trip over the null pointer.
Fix that by reporting either the file being examined or the file that
was used to call scrub.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Brian Foster <bfoster@redhat.com>
4 years agoxfs: retry allocations when locality-based search fails
Darrick J. Wong [Sun, 9 May 2021 23:22:55 +0000 (16:22 -0700)] 
xfs: retry allocations when locality-based search fails

If a realtime allocation fails because we can't find a sufficiently
large free extent satisfying locality rules, relax the locality rules
and try again.  This reduces the occurrence of short writes to realtime
files when the write size is large and the free space is fragmented.

This was originally discovered by running generic/186 with the realtime
reflink patchset and a 128k cow extent size hint, but the short write
symptoms can manifest with a 128k extent size hint and no reflink, so
apply the fix now.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
4 years agopowerpc/64s/syscall: Fix ptrace syscall info with scv syscalls
Nicholas Piggin [Thu, 20 May 2021 11:19:31 +0000 (21:19 +1000)] 
powerpc/64s/syscall: Fix ptrace syscall info with scv syscalls

The scv implementation missed updating syscall return value and error
value get/set functions to deal with the changed register ABI. This
broke ptrace PTRACE_GET_SYSCALL_INFO as well as some kernel auditing
and tracing functions.

Fix. tools/testing/selftests/ptrace/get_syscall_info now passes when
scv is used.

Fixes: 7fa95f9adaee ("powerpc/64s: system call support for scv/rfscv instructions")
Cc: stable@vger.kernel.org # v5.9+
Reported-by: "Dmitry V. Levin" <ldv@altlinux.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210520111931.2597127-2-npiggin@gmail.com
4 years agopowerpc/64s/syscall: Use pt_regs.trap to distinguish syscall ABI difference between...
Nicholas Piggin [Thu, 20 May 2021 11:19:30 +0000 (21:19 +1000)] 
powerpc/64s/syscall: Use pt_regs.trap to distinguish syscall ABI difference between sc and scv syscalls

The sc and scv 0 system calls have different ABI conventions, and
ptracers need to know which system call type is being used if they want
to look at the syscall registers.

Document that pt_regs.trap can be used for this, and fix one in-tree user
to work with scv 0 syscalls.

Fixes: 7fa95f9adaee ("powerpc/64s: system call support for scv/rfscv instructions")
Cc: stable@vger.kernel.org # v5.9+
Reported-by: "Dmitry V. Levin" <ldv@altlinux.org>
Suggested-by: "Dmitry V. Levin" <ldv@altlinux.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210520111931.2597127-1-npiggin@gmail.com
4 years agoblock: fix a race between del_gendisk and BLKRRPART
Gulam Mohamed [Fri, 14 May 2021 13:18:42 +0000 (15:18 +0200)] 
block: fix a race between del_gendisk and BLKRRPART

When BLKRRPART is called concurrently with del_gendisk, the partitions
rescan can create a stale partition that will never be be cleaned up.

Fix this by checking the the disk is up before rescanning partitions
while under bd_mutex.

Signed-off-by: Gulam Mohamed <gulam.mohamed@oracle.com>
[hch: split from a larger patch]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20210514131842.1600568-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
4 years agoblock: prevent block device lookups at the beginning of del_gendisk
Christoph Hellwig [Fri, 14 May 2021 13:18:41 +0000 (15:18 +0200)] 
block: prevent block device lookups at the beginning of del_gendisk

As an artifact of how gendisk lookup used to work in earlier kernels,
GENHD_FL_UP is only cleared very late in del_gendisk, and a global lock
is used to prevent opens from succeeding while del_gendisk is tearing
down the gendisk.  Switch to clearing the flag early and under bd_mutex
so that callers can use bd_mutex to stabilize the flag, which removes
the need for the global mutex.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20210514131842.1600568-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
4 years agoMerge tag 'nvme-5.13-2021-05-20' of git://git.infradead.org/nvme into block-5.13
Jens Axboe [Thu, 20 May 2021 13:54:49 +0000 (07:54 -0600)] 
Merge tag 'nvme-5.13-2021-05-20' of git://git.infradead.org/nvme into block-5.13

Pull NVMe fixes from Christoph:

"nvme fixes for Linux 5.13:

 - nvme-tcp corruption and timeout fixes (Sagi Grimberg, Keith Busch)
 - nvme-fc teardown fix (James Smart)
 - nvmet/nvme-loop memory leak fixes (Wu Bo)"

* tag 'nvme-5.13-2021-05-20' of git://git.infradead.org/nvme:
  nvme-fc: clear q_live at beginning of association teardown
  nvme-tcp: rerun io_work if req_list is not empty
  nvme-tcp: fix possible use-after-completion
  nvme-loop: fix memory leak in nvme_loop_create_ctrl()
  nvmet: fix memory leak in nvmet_alloc_ctrl()

4 years agobtrfs: zoned: fix parallel compressed writes
Johannes Thumshirn [Tue, 18 May 2021 15:40:28 +0000 (00:40 +0900)] 
btrfs: zoned: fix parallel compressed writes

When multiple processes write data to the same block group on a
compressed zoned filesystem, the underlying device could report I/O
errors and data corruption is possible.

This happens because on a zoned file system, compressed data writes
where sent to the device via a REQ_OP_WRITE instead of a
REQ_OP_ZONE_APPEND operation. But with REQ_OP_WRITE and parallel
submission it cannot be guaranteed that the data is always submitted
aligned to the underlying zone's write pointer.

The change to using REQ_OP_ZONE_APPEND instead of REQ_OP_WRITE on a
zoned filesystem is non intrusive on a regular file system or when
submitting to a conventional zone on a zoned filesystem, as it is
guarded by btrfs_use_zone_append.

Reported-by: David Sterba <dsterba@suse.com>
Fixes: 9d294a685fbc ("btrfs: zoned: enable to mount ZONED incompat flag")
CC: stable@vger.kernel.org # 5.12.x: e380adfc213a13: btrfs: zoned: pass start block to btrfs_use_zone_append
CC: stable@vger.kernel.org # 5.12.x
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
4 years agobtrfs: zoned: pass start block to btrfs_use_zone_append
Johannes Thumshirn [Tue, 18 May 2021 15:40:27 +0000 (00:40 +0900)] 
btrfs: zoned: pass start block to btrfs_use_zone_append

btrfs_use_zone_append only needs the passed in extent_map's block_start
member, so there's no need to pass in the full extent map.

This also enables the use of btrfs_use_zone_append in places where we only
have a start byte but no extent_map.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>