platform/kernel/linux-starfive.git
3 years agoARM: picoxcell: fix missing interrupt-parent properties
Arnd Bergmann [Wed, 30 Dec 2020 15:20:05 +0000 (16:20 +0100)]
ARM: picoxcell: fix missing interrupt-parent properties

dtc points out that the interrupts for some devices are not parsable:

picoxcell-pc3x2.dtsi:45.19-49.5: Warning (interrupts_property): /paxi/gem@30000: Missing interrupt-parent
picoxcell-pc3x2.dtsi:51.21-55.5: Warning (interrupts_property): /paxi/dmac@40000: Missing interrupt-parent
picoxcell-pc3x2.dtsi:57.21-61.5: Warning (interrupts_property): /paxi/dmac@50000: Missing interrupt-parent
picoxcell-pc3x2.dtsi:233.21-237.5: Warning (interrupts_property): /rwid-axi/axi2pico@c0000000: Missing interrupt-parent

There are two VIC instances, so it's not clear which one needs to be
used. I found the BSP sources that reference VIC0, so use that:

https://github.com/r1mikey/meta-picoxcell/blob/master/recipes-kernel/linux/linux-picochip-3.0/0001-picoxcell-support-for-Picochip-picoXcell-SoC.patch

Acked-by: Jamie Iles <jamie@jamieiles.com>
Link: https://lore.kernel.org/r/20201230152010.3914962-1-arnd@kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoARM: dts: ux500/golden: Set display max brightness
Linus Walleij [Mon, 14 Dec 2020 22:34:13 +0000 (23:34 +0100)]
ARM: dts: ux500/golden: Set display max brightness

A too high brightness by default (default is max) makes the
screen go blank. Set this to 15 as in the Vendor tree.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20201214223413.253893-1-linus.walleij@linaro.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoMerge tag 'omap-for-v5.11/defconfig-late-signed' of git://git.kernel.org/pub/scm...
Arnd Bergmann [Tue, 22 Dec 2020 16:40:29 +0000 (17:40 +0100)]
Merge tag 'omap-for-v5.11/defconfig-late-signed' of git://git./linux/kernel/git/tmlind/linux-omap into arm/fixes

Late defconfig changes for omaps for v5.11 merge window

Drop drop unused POWER_AVS option, and enable CONFIG_SPI_GPIO as
a loadable module so gta04 needs it for controlling the td028ttec1
panel.

* tag 'omap-for-v5.11/defconfig-late-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: omap2plus_defconfig: enable SPI GPIO
  ARM: omap2plus_defconfig: drop unused POWER_AVS option
  ARM: omap2plus_defconfig: Enable TI eQEP counter driver
  ARM: omap2plus_defconfig: add CONFIG_AK8975=m and CONFIG_KXCJK1013=m
  ARM: omap2plus_defconfig: Enable OMAP3_THERMAL

Link: https://lore.kernel.org/r/pull-1607675790-251347@atomide.com-2
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoMerge tag 'omap-for-v5.10/fixes-rc6-signed' of git://git.kernel.org/pub/scm/linux...
Arnd Bergmann [Sat, 12 Dec 2020 21:47:37 +0000 (22:47 +0100)]
Merge tag 'omap-for-v5.10/fixes-rc6-signed' of git://git./linux/kernel/git/tmlind/linux-omap into arm/fixes

Few regression fixes for omaps for v5.10

Few fixes for regression issues recently noticed by folks testing
the current kernel:

- We need to disable AES for n950 as it's not accessible because of the
  secure mode configuration and kernel fails to boot

- On gta04 wlan probe exposed a bug for BUS_NOTIFY_BIND_DRIVER that has
  been around for a long time

- Droid bionic exposed an issue where we configure an invalid range on
  the PMIC that adds boot time warnings

Obviously these fixes can be merged whenever suitable.

* tag 'omap-for-v5.10/fixes-rc6-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: omap2: pmic-cpcap: fix maximum voltage to be consistent with defaults on xt875
  ARM: OMAP2+: omap_device: fix idling of devices during probe
  ARM: dts: OMAP3: disable AES on N950/N9

Link: https://lore.kernel.org/r/pull-1607674932-973902@atomide.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoarm64: dts: bitmain: Use generic "ngpios" rather than "snps,nr-gpios"
Jisheng Zhang [Thu, 10 Dec 2020 09:40:56 +0000 (15:10 +0530)]
arm64: dts: bitmain: Use generic "ngpios" rather than "snps,nr-gpios"

This is to remove similar errors as below:

OF: /.../gpio-port@0: could not find phandle

Commit 7569486d79ae ("gpio: dwapb: Add ngpios DT-property support")
explained the reason of above errors well and added the generic
"ngpios" property, let's use it.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20201210094056.54553-1-manivannan.sadhasivam@linaro.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agofirmware: xilinx: Mark pm_api_features_map with static keyword
Zou Wei [Tue, 1 Dec 2020 11:51:53 +0000 (19:51 +0800)]
firmware: xilinx: Mark pm_api_features_map with static keyword

Fix the following sparse warning:

drivers/firmware/xilinx/zynqmp.c:32:1: warning: symbol 'pm_api_features_map' was not declared. Should it be static?

Signed-off-by: Zou Wei <zou_wei@huawei.com>
Link: https://lore.kernel.org/r/1606823513-121578-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoARM: dts: mmp2-olpc-xo-1-75: clear the warnings when make dtbs
Zhen Lei [Mon, 7 Dec 2020 08:47:52 +0000 (16:47 +0800)]
ARM: dts: mmp2-olpc-xo-1-75: clear the warnings when make dtbs

The check_spi_bus_bridge() in scripts/dtc/checks.c requires that the node
have "spi-slave" property must with "#address-cells = <0>" and
"#size-cells = <0>". But currently both "#address-cells" and "#size-cells"
properties are deleted, the corresponding default values are 2 and 1. As a
result, the check fails and below warnings is displayed.

arch/arm/boot/dts/mmp2.dtsi:472.23-480.6: Warning (spi_bus_bridge): \
/soc/apb@d4000000/spi@d4037000: incorrect #address-cells for SPI bus
  also defined at arch/arm/boot/dts/mmp2-olpc-xo-1-75.dts:225.7-237.3
arch/arm/boot/dts/mmp2.dtsi:472.23-480.6: Warning (spi_bus_bridge): \
/soc/apb@d4000000/spi@d4037000: incorrect #size-cells for SPI bus
  also defined at arch/arm/boot/dts/mmp2-olpc-xo-1-75.dts:225.7-237.3
arch/arm/boot/dts/mmp2-olpc-xo-1-75.dtb: Warning (spi_bus_reg): \
Failed prerequisite 'spi_bus_bridge'

Because the value of "#size-cells" is already defined as zero in the node
"ssp3: spi@d4037000" in arch/arm/boot/dts/mmp2.dtsi. So we only need to
explicitly add "#address-cells = <0>" and keep "#size-cells" no change.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20201207084752.1665-2-thunder.leizhen@huawei.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoMerge tag 'sunxi-fixes-for-5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Arnd Bergmann [Tue, 8 Dec 2020 23:13:37 +0000 (00:13 +0100)]
Merge tag 'sunxi-fixes-for-5.10-3' of git://git./linux/kernel/git/sunxi/linux into arm/fixes

A few more RGMII-ID fixes

* tag 'sunxi-fixes-for-5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  arm64: dts: allwinner: H5: NanoPi Neo Plus2: phy-mode rgmii-id
  arm64: dts: allwinner: A64 Sopine: phy-mode rgmii-id

Link: https://lore.kernel.org/r/2a351c9c-470f-4c5e-ba37-80065ae0586d.lettre@localhost
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoARM: omap2: pmic-cpcap: fix maximum voltage to be consistent with defaults on xt875
Carl Philipp Klemm [Mon, 7 Dec 2020 19:58:01 +0000 (20:58 +0100)]
ARM: omap2: pmic-cpcap: fix maximum voltage to be consistent with defaults on xt875

xt875 comes up with a iva voltage of 1375000 and android runs at this too. fix
maximum voltage to be consistent with this.

Signed-off-by: Carl Philipp Klemm <philipp@uvos.xyz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
4 years agoMAINTAINERS: add a limited ARM and ARM64 SoC entry
Krzysztof Kozlowski [Tue, 1 Dec 2020 21:15:16 +0000 (23:15 +0200)]
MAINTAINERS: add a limited ARM and ARM64 SoC entry

It is expected for ARM and ARM64 SoC related code to go through
sub-architecture maintainers.  Their addresses were therefore not
documented to push patch traffic through sub-architecture maintainers.

However when patches touch generic code, e.g. multi_v7_defconfig, the
patch might not be picked up by them and instead should go to the SoC
maintainers - Arnd and Olof.

Add a minimal maintainer's entry for SoC covering only Makefile, so it
will not appear on most of submissions (except new devicetree boards).
It will though serve as a documentation and reference for cases when
submitter does not know where to send his SoC-related patches.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201201211516.24921-2-krzk@kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoMAINTAINERS: correct SoC Git address (formerly: arm-soc)
Krzysztof Kozlowski [Tue, 1 Dec 2020 21:15:15 +0000 (23:15 +0200)]
MAINTAINERS: correct SoC Git address (formerly: arm-soc)

The SoC Git was moved from arm/arm-soc.git to soc/soc.git.  Correct the
ARM Sub-architectures entry.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201201211516.24921-1-krzk@kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoARM: keystone: remove SECTION_SIZE_BITS/MAX_PHYSMEM_BITS
Arnd Bergmann [Thu, 3 Dec 2020 23:18:40 +0000 (00:18 +0100)]
ARM: keystone: remove SECTION_SIZE_BITS/MAX_PHYSMEM_BITS

These definitions are evidently left over from the days when
sparsemem settings were platform specific. This was no longer
the case when the platform got merged.

There was no warning in the past, but now the asm/sparsemem.h
header ends up being included indirectly, causing this warning:

In file included from /git/arm-soc/arch/arm/mach-keystone/keystone.c:24:
arch/arm/mach-keystone/memory.h:10:9: warning: 'SECTION_SIZE_BITS' macro redefined [-Wmacro-redefined]
 #define SECTION_SIZE_BITS       34
        ^
arch/arm/include/asm/sparsemem.h:23:9: note: previous definition is here
 #define SECTION_SIZE_BITS       28
        ^

Clearly the definitions never had any effect here, so remove them.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20201203231847.1484900-1-arnd@kernel.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoMerge tag 'imx-fixes-5.10-5' of git://git.kernel.org/pub/scm/linux/kernel/git/shawngu...
Arnd Bergmann [Mon, 7 Dec 2020 14:28:59 +0000 (15:28 +0100)]
Merge tag 'imx-fixes-5.10-5' of git://git./linux/kernel/git/shawnguo/linux into arm/fixes

i.MX fixes for 5.10, round 5:

- Fix a regression on SoC revision detection with ANATOP, that is
  introduced by commit  4a4fb66119eb ("ARM: imx: Add missing
  of_node_put()").
- Drop PAD_GPIO_6 from imx6qdl-wandboard ENET pin group, as the pin is
  used by camera sensor now.
- Fix I2C3_SCL pinmux on imx6qdl-kontron-samx6i board, so that SoM EEPROM
  can be accessed.

* tag 'imx-fixes-5.10-5' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: dts: imx6qdl-kontron-samx6i: fix I2C_PM scl pin
  ARM: dts: imx6qdl-wandboard-revd1: Remove PAD_GPIO_6 from enetgrp
  ARM: imx: Use correct SRC base address

Link: https://lore.kernel.org/r/20201201091820.GW4072@dragon
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoMerge tag 'sunxi-fixes-for-5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Arnd Bergmann [Mon, 7 Dec 2020 14:28:27 +0000 (15:28 +0100)]
Merge tag 'sunxi-fixes-for-5.10-2' of git://git./linux/kernel/git/sunxi/linux into arm/fixes

A few more RGMII-ID fixes, and a bunch of other more random fixes

* tag 'sunxi-fixes-for-5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  ARM: dts: sun7i: pcduino3-nano: enable RGMII RX/TX delay on PHY
  ARM: dts: sun8i: v3s: fix GIC node memory range
  ARM: dts: sun8i: v40: bananapi-m2-berry: Fix ethernet node
  ARM: dts: sun8i: r40: bananapi-m2-berry: Fix dcdc1 regulator
  ARM: dts: sun7i: bananapi: Enable RGMII RX/TX delay on Ethernet PHY
  ARM: dts: s3: pinecube: align compatible property to other S3 boards
  ARM: sunxi: Add machine match for the Allwinner V3 SoC
  arm64: dts: allwinner: h6: orangepi-one-plus: Fix ethernet

Link: https://lore.kernel.org/r/1280f1de-1b6d-4cc2-8448-e5a9096a41e8.lettre@localhost
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
4 years agoARM: omap2plus_defconfig: enable SPI GPIO
Andreas Kemnade [Tue, 1 Dec 2020 19:12:37 +0000 (20:12 +0100)]
ARM: omap2plus_defconfig: enable SPI GPIO

GTA04 uses that for controlling the td028ttec1 panel. So
for easier testing/bisecting it is useful to have it
enabled in the defconfig.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Tony Lindgren <tony@atomide.com>
4 years agoARM: OMAP2+: omap_device: fix idling of devices during probe
Andreas Kemnade [Fri, 4 Dec 2020 09:55:39 +0000 (10:55 +0100)]
ARM: OMAP2+: omap_device: fix idling of devices during probe

On the GTA04A5 od->_driver_status was not set to BUS_NOTIFY_BIND_DRIVER
during probe of the second mmc used for wifi. Therefore
omap_device_late_idle idled the device during probing causing oopses when
accessing the registers.

It was not set because od->_state was set to OMAP_DEVICE_STATE_IDLE
in the notifier callback. Therefore set od->_driver_status also in that
case.

This came apparent after commit 21b2cec61c04 ("mmc: Set
PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.4") causing this
oops:

omap_hsmmc 480b4000.mmc: omap_device_late_idle: enabled but no driver.  Idling
8<--- cut here ---
Unhandled fault: external abort on non-linefetch (0x1028) at 0xfa0b402c
...
(omap_hsmmc_set_bus_width) from [<c07996bc>] (omap_hsmmc_set_ios+0x11c/0x258)
(omap_hsmmc_set_ios) from [<c077b2b0>] (mmc_power_up.part.8+0x3c/0xd0)
(mmc_power_up.part.8) from [<c077c14c>] (mmc_start_host+0x88/0x9c)
(mmc_start_host) from [<c077d284>] (mmc_add_host+0x58/0x84)
(mmc_add_host) from [<c0799190>] (omap_hsmmc_probe+0x5fc/0x8c0)
(omap_hsmmc_probe) from [<c0666728>] (platform_drv_probe+0x48/0x98)
(platform_drv_probe) from [<c066457c>] (really_probe+0x1dc/0x3b4)

Fixes: 04abaf07f6d5 ("ARM: OMAP2+: omap_device: Sync omap_device and pm_runtime after probe defer")
Fixes: 21b2cec61c04 ("mmc: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.4")
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
[tony@atomide.com: left out extra parens, trimmed description stack trace]
Signed-off-by: Tony Lindgren <tony@atomide.com>
4 years agoLinux 5.10-rc7
Linus Torvalds [Sun, 6 Dec 2020 22:25:12 +0000 (14:25 -0800)]
Linux 5.10-rc7

4 years agoMerge tag 'char-misc-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sun, 6 Dec 2020 19:48:17 +0000 (11:48 -0800)]
Merge tag 'char-misc-5.10-rc7' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small driver fixes, and one "large" revert, for
  5.10-rc7.

  They include:

   - revert mei patch from 5.10-rc1 that was using a reserved userspace
     value. It will be resubmitted once the proper id has been assigned
     by the virtio people.

   - habanalabs fixes found by the fall-through audit from Gustavo

   - speakup driver fixes for reported issues

   - fpga config build fix for reported issue.

  All of these except the revert have been in linux-next with no
  reported issues. The revert is "clean" and just removes a
  previously-added driver, so no real issue there"

* tag 'char-misc-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Revert "mei: virtio: virtualization frontend driver"
  fpga: Specify HAS_IOMEM dependency for FPGA_DFL
  habanalabs: put devices before driver removal
  habanalabs: free host huge va_range if not used
  speakup: Reject setting the speakup line discipline outside of speakup

4 years agoMerge tag 'tty-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sun, 6 Dec 2020 19:43:50 +0000 (11:43 -0800)]
Merge tag 'tty-5.10-rc7' of git://git./linux/kernel/git/gregkh/tty

Pull tty fixes from Greg KH:
 "Here are two tty core fixes for 5.10-rc7.

  They resolve some reported locking issues in the tty core. While they
  have not been in a released linux-next yet, they have passed all of
  the 0-day bot testing as well as the submitter's testing"

* tag 'tty-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: Fix ->session locking
  tty: Fix ->pgrp locking in tiocspgrp()

4 years agoMerge tag 'usb-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 6 Dec 2020 19:38:36 +0000 (11:38 -0800)]
Merge tag 'usb-5.10-rc7' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB fixes for 5.10-rc7 that resolve a number of
  reported issues, and add some new device ids.

  Nothing major here, but these solve some problems that people were
  having with the 5.10-rc tree:

   - reverts for USB storage dma settings that broke working devices

   - thunderbolt use-after-free fix

   - cdns3 driver fixes

   - gadget driver userspace copy fix

   - new device ids

  All of these except for the reverts have been in linux-next with no
  reported issues. The reverts are "clean" and were tested by Hans, as
  well as passing the 0-day tests"

* tag 'usb-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: gadget: f_fs: Use local copy of descriptors for userspace copy
  usb: ohci-omap: Fix descriptor conversion
  Revert "usb-storage: fix sdev->host->dma_dev"
  Revert "uas: fix sdev->host->dma_dev"
  Revert "uas: bump hw_max_sectors to 2048 blocks for SS or faster drives"
  USB: serial: kl5kusb105: fix memleak on open
  USB: serial: ch341: sort device-id entries
  USB: serial: ch341: add new Product ID for CH341A
  USB: serial: option: fix Quectel BG96 matching
  usb: cdns3: core: fix goto label for error path
  usb: cdns3: gadget: clear trb->length as zero after preparing every trb
  usb: cdns3: Fix hardware based role switch
  USB: serial: option: add support for Thales Cinterion EXS82
  USB: serial: option: add Fibocom NL668 variants
  thunderbolt: Fix use-after-free in remove_unplugged_switch()

4 years agoMerge tag 'x86-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 6 Dec 2020 19:22:39 +0000 (11:22 -0800)]
Merge tag 'x86-urgent-2020-12-06' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "A set of fixes for x86:

   - Make the AMD L3 QoS code and data priorization enable/disable
     mechanism work correctly.

     The control bit was only set/cleared on one of the CPUs in a L3
     domain, but it has to be modified on all CPUs in the domain. The
     initial documentation was not clear about this, but the updated one
     from Oct 2020 spells it out.

   - Fix an off by one in the UV platform detection code which causes
     the UV hubs to be identified wrongly.

     The chip revisions start at 1 not at 0.

   - Fix a long standing bug in the evaluation of prefixes in the
     uprobes code which fails to handle repeated prefixes properly.

     The aggregate size of the prefixes can be larger than the bytes
     array but the code blindly iterated over the aggregate size beyond
     the array boundary. Add a macro to handle this case properly and
     use it at the affected places"

* tag 'x86-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sev-es: Use new for_each_insn_prefix() macro to loop over prefixes bytes
  x86/insn-eval: Use new for_each_insn_prefix() macro to loop over prefixes bytes
  x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes
  x86/platform/uv: Fix UV4 hub revision adjustment
  x86/resctrl: Fix AMD L3 QOS CDP enable/disable

4 years agoMerge tag 'perf-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 6 Dec 2020 19:20:18 +0000 (11:20 -0800)]
Merge tag 'perf-urgent-2020-12-06' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "Two fixes for performance monitoring on X86:

   - Add recursion protection to another callchain invoked from
     x86_pmu_stop() which can recurse back into x86_pmu_stop(). The
     first attempt to fix this missed this extra code path.

   - Use the already filtered status variable to check for PEBS counter
     overflow bits and not the unfiltered full status read from
     IA32_PERF_GLOBAL_STATUS which can have unrelated bits check which
     would be evaluated incorrectly"

* tag 'perf-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Check PEBS status correctly
  perf/x86/intel: Fix a warning on x86_pmu_stop() with large PEBS

4 years agoMerge tag 'irq-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 6 Dec 2020 19:15:55 +0000 (11:15 -0800)]
Merge tag 'irq-urgent-2020-12-06' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A set of updates for the interrupt subsystem:

   - Make multiqueue devices which use the managed interrupt affinity
     infrastructure work on PowerPC/Pseries. PowerPC does not use the
     generic infrastructure for setting up PCI/MSI interrupts and the
     multiqueue changes failed to update the legacy PCI/MSI
     infrastructure. Make this work by passing the affinity setup
     information down to the mapping and allocation functions.

   - Move Jason Cooper from MAINTAINERS to CREDITS as his mail is
     bouncing and he's not reachable. We hope all is well with him and
     say thanks for his work over the years"

* tag 'irq-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  powerpc/pseries: Pass MSI affinity to irq_create_mapping()
  genirq/irqdomain: Add an irq_create_mapping_affinity() function
  MAINTAINERS: Move Jason Cooper to CREDITS

4 years agoMerge tag 'locking-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 6 Dec 2020 19:11:32 +0000 (11:11 -0800)]
Merge tag 'locking-urgent-2020-12-06' of git://git./linux/kernel/git/tip/tip

Pull intel_idle build fix from Thomas Gleixner:
 "A tiny build fix for a recent change in the intel_idle driver which
  missed a CONFIG dependency and broke the build for certain
  configurations"

* tag 'locking-urgent-2020-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  intel_idle: Build fix

4 years agoMerge tag 'kbuild-fixes-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 6 Dec 2020 18:31:39 +0000 (10:31 -0800)]
Merge tag 'kbuild-fixes-v5.10-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Move -Wcast-align to W=3, which tends to be false-positive and there
   is no tree-wide solution.

 - Pass -fmacro-prefix-map to KBUILD_CPPFLAGS because it is a
   preprocessor option and makes sense for .S files as well.

 - Disable -gdwarf-2 for Clang's integrated assembler to avoid warnings.

 - Disable --orphan-handling=warn for LLD 10.0.1 to avoid warnings.

 - Fix undesirable line breaks in *.mod files.

* tag 'kbuild-fixes-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: avoid split lines in .mod files
  kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1
  kbuild: Hoist '--orphan-handling' into Kconfig
  Kbuild: do not emit debug info for assembly with LLVM_IAS=1
  kbuild: use -fmacro-prefix-map for .S sources
  Makefile.extrawarn: move -Wcast-align to W=3

4 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Sun, 6 Dec 2020 18:20:59 +0000 (10:20 -0800)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "12 patches.

  Subsystems affected by this patch series: mm (memcg, zsmalloc, swap,
  mailmap, selftests, pagecache, hugetlb, pagemap), lib, and coredump"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm/mmap.c: fix mmap return value when vma is merged after call_mmap()
  hugetlb_cgroup: fix offline of hugetlb cgroup with reservations
  mm/filemap: add static for function __add_to_page_cache_locked
  userfaultfd: selftests: fix SIGSEGV if huge mmap fails
  tools/testing/selftests/vm: fix build error
  mailmap: add two more addresses of Uwe Kleine-König
  mm/swapfile: do not sleep with a spin lock held
  mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING
  mm: list_lru: set shrinker map bit when child nr_items is not zero
  mm: memcg/slab: fix obj_cgroup_charge() return value handling
  coredump: fix core_pattern parse error
  zlib: export S390 symbols for zlib modules

4 years agomm/mmap.c: fix mmap return value when vma is merged after call_mmap()
Liu Zixian [Sun, 6 Dec 2020 06:15:15 +0000 (22:15 -0800)]
mm/mmap.c: fix mmap return value when vma is merged after call_mmap()

On success, mmap should return the begin address of newly mapped area,
but patch "mm: mmap: merge vma after call_mmap() if possible" set
vm_start of newly merged vma to return value addr.  Users of mmap will
get wrong address if vma is merged after call_mmap().  We fix this by
moving the assignment to addr before merging vma.

We have a driver which changes vm_flags, and this bug is found by our
testcases.

Fixes: d70cec898324 ("mm: mmap: merge vma after call_mmap() if possible")
Signed-off-by: Liu Zixian <liuzixian4@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Hongxiang Lou <louhongxiang@huawei.com>
Cc: Hu Shiyuan <hushiyuan@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Link: https://lkml.kernel.org/r/20201203085350.22624-1-liuzixian4@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agohugetlb_cgroup: fix offline of hugetlb cgroup with reservations
Mike Kravetz [Sun, 6 Dec 2020 06:15:12 +0000 (22:15 -0800)]
hugetlb_cgroup: fix offline of hugetlb cgroup with reservations

Adrian Moreno was ruuning a kubernetes 1.19 + containerd/docker workload
using hugetlbfs.  In this environment the issue is reproduced by:

 - Start a simple pod that uses the recently added HugePages medium
   feature (pod yaml attached)

 - Start a DPDK app. It doesn't need to run successfully (as in transfer
   packets) nor interact with real hardware. It seems just initializing
   the EAL layer (which handles hugepage reservation and locking) is
   enough to trigger the issue

 - Delete the Pod (or let it "Complete").

This would result in a kworker thread going into a tight loop (top output):

   1425 root      20   0       0      0      0 R  99.7   0.0   5:22.45 kworker/28:7+cgroup_destroy

'perf top -g' reports:

  -   63.28%     0.01%  [kernel]                    [k] worker_thread
     - 49.97% worker_thread
        - 52.64% process_one_work
           - 62.08% css_killed_work_fn
              - hugetlb_cgroup_css_offline
                   41.52% _raw_spin_lock
                 - 2.82% _cond_resched
                      rcu_all_qs
                   2.66% PageHuge
        - 0.57% schedule
           - 0.57% __schedule

We are spinning in the do-while loop in hugetlb_cgroup_css_offline.
Worse yet, we are holding the master cgroup lock (cgroup_mutex) while
infinitely spinning.  Little else can be done on the system as the
cgroup_mutex can not be acquired.

Do note that the issue can be reproduced by simply offlining a hugetlb
cgroup containing pages with reservation counts.

The loop in hugetlb_cgroup_css_offline is moving page counts from the
cgroup being offlined to the parent cgroup.  This is done for each
hstate, and is repeated until hugetlb_cgroup_have_usage returns false.
The routine moving counts (hugetlb_cgroup_move_parent) is only moving
'usage' counts.  The routine hugetlb_cgroup_have_usage is checking for
both 'usage' and 'reservation' counts.  Discussion about what to do with
reservation counts when reparenting was discussed here:

https://lore.kernel.org/linux-kselftest/CAHS8izMFAYTgxym-Hzb_JmkTK1N_S9tGN71uS6MFV+R7swYu5A@mail.gmail.com/

The decision was made to leave a zombie cgroup for with reservation
counts.  Unfortunately, the code checking reservation counts was
incorrectly added to hugetlb_cgroup_have_usage.

To fix the issue, simply remove the check for reservation counts.  While
fixing this issue, a related bug in hugetlb_cgroup_css_offline was
noticed.  The hstate index is not reinitialized each time through the
do-while loop.  Fix this as well.

Fixes: 1adc4d419aa2 ("hugetlb_cgroup: add interface for charge/uncharge hugetlb reservations")
Reported-by: Adrian Moreno <amorenoz@redhat.com>
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Adrian Moreno <amorenoz@redhat.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Sandipan Das <sandipan@linux.ibm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201203220242.158165-1-mike.kravetz@oracle.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomm/filemap: add static for function __add_to_page_cache_locked
Alex Shi [Sun, 6 Dec 2020 06:15:09 +0000 (22:15 -0800)]
mm/filemap: add static for function __add_to_page_cache_locked

  mm/filemap.c:830:14: warning: no previous prototype for `__add_to_page_cache_locked' [-Wmissing-prototypes]

Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Link: https://lkml.kernel.org/r/1604661895-5495-1-git-send-email-alex.shi@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agouserfaultfd: selftests: fix SIGSEGV if huge mmap fails
Axel Rasmussen [Sun, 6 Dec 2020 06:15:05 +0000 (22:15 -0800)]
userfaultfd: selftests: fix SIGSEGV if huge mmap fails

The error handling in hugetlb_allocate_area() was incorrect for the
hugetlb_shared test case.

Previously the behavior was:

- mmap a hugetlb area
  - If this fails, set the pointer to NULL, and carry on
- mmap an alias of the same hugetlb fd
  - If this fails, munmap the original area

If the original mmap failed, it's likely the second one did too.  If
both failed, we'd blindly try to munmap a NULL pointer, causing a
SIGSEGV.  Instead, "goto fail" so we return before trying to mmap the
alias.

This issue can be hit "in real life" by forgetting to set
/proc/sys/vm/nr_hugepages (leaving it at 0), and then trying to run the
hugetlb_shared test.

Another small improvement is, when the original mmap fails, don't just
print "it failed": perror(), so we can see *why*.  :)

Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Joe Perches <joe@perches.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Alan Gilbert <dgilbert@redhat.com>
Link: https://lkml.kernel.org/r/20201204203443.2714693-1-axelrasmussen@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agotools/testing/selftests/vm: fix build error
Xingxing Su [Sun, 6 Dec 2020 06:15:02 +0000 (22:15 -0800)]
tools/testing/selftests/vm: fix build error

Only x86 and PowerPC implement the pkey-xxx.h, and an error was reported
when compiling protection_keys.c.

Add a Arch judgment to compile "protection_keys" in the Makefile.

If other arch implement this, add the arch name to the Makefile.
eg:
    ifneq (,$(findstring $(ARCH),powerpc mips ... ))

Following build errors:

    pkey-helpers.h:93:2: error: #error Architecture not supported
     #error Architecture not supported
    pkey-helpers.h:96:20: error: `PKEY_DISABLE_ACCESS' undeclared
     #define PKEY_MASK (PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE)
                        ^
    protection_keys.c:218:45: error: `PKEY_DISABLE_WRITE' undeclared
     pkey_assert(flags & (PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE));
                                                ^

Signed-off-by: Xingxing Su <suxingxing@loongson.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Sandipan Das <sandipan@linux.ibm.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Brian Geffon <bgeffon@google.com>
Cc: Mina Almasry <almasrymina@google.com>
Link: https://lkml.kernel.org/r/1606826876-30656-1-git-send-email-suxingxing@loongson.cn
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomailmap: add two more addresses of Uwe Kleine-König
Uwe Kleine-König [Sun, 6 Dec 2020 06:14:58 +0000 (22:14 -0800)]
mailmap: add two more addresses of Uwe Kleine-König

This fixes attribution for the commits (among others)

 - d4097456cd1d ("video/framebuffer: move the probe func into
   .devinit.text in Blackfin LCD driver")

 - 0312e024d6cd ("mfd: mc13xxx: Add support for mc34708")

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20201127213358.3440830-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomm/swapfile: do not sleep with a spin lock held
Qian Cai [Sun, 6 Dec 2020 06:14:55 +0000 (22:14 -0800)]
mm/swapfile: do not sleep with a spin lock held

We can't call kvfree() with a spin lock held, so defer it.  Fixes a
might_sleep() runtime warning.

Fixes: 873d7bcfd066 ("mm/swapfile.c: use kvzalloc for swap_info_struct allocation")
Signed-off-by: Qian Cai <qcai@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201202151549.10350-1-qcai@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING
Minchan Kim [Sun, 6 Dec 2020 06:14:51 +0000 (22:14 -0800)]
mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING

While I was doing zram testing, I found sometimes decompression failed
since the compression buffer was corrupted.  With investigation, I found
below commit calls cond_resched unconditionally so it could make a
problem in atomic context if the task is reschedule.

  BUG: sleeping function called from invalid context at mm/vmalloc.c:108
  in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 946, name: memhog
  3 locks held by memhog/946:
   #0: ffff9d01d4b193e8 (&mm->mmap_lock#2){++++}-{4:4}, at: __mm_populate+0x103/0x160
   #1: ffffffffa3d53de0 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa98/0x1160
   #2: ffff9d01d56b8110 (&zspage->lock){.+.+}-{3:3}, at: zs_map_object+0x8e/0x1f0
  CPU: 0 PID: 946 Comm: memhog Not tainted 5.9.3-00011-gc5bfc0287345-dirty #316
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1 04/01/2014
  Call Trace:
    unmap_kernel_range_noflush+0x2eb/0x350
    unmap_kernel_range+0x14/0x30
    zs_unmap_object+0xd5/0xe0
    zram_bvec_rw.isra.0+0x38c/0x8e0
    zram_rw_page+0x90/0x101
    bdev_write_page+0x92/0xe0
    __swap_writepage+0x94/0x4a0
    pageout+0xe3/0x3a0
    shrink_page_list+0xb94/0xd60
    shrink_inactive_list+0x158/0x460

We can fix this by removing the ZSMALLOC_PGTABLE_MAPPING feature (which
contains the offending calling code) from zsmalloc.

Even though this option showed some amount improvement(e.g., 30%) in
some arm32 platforms, it has been headache to maintain since it have
abused APIs[1](e.g., unmap_kernel_range in atomic context).

Since we are approaching to deprecate 32bit machines and already made
the config option available for only builtin build since v5.8, lastly it
has been not default option in zsmalloc, it's time to drop the option
for better maintenance.

[1] http://lore.kernel.org/linux-mm/20201105170249.387069-1-minchan@kernel.org

Fixes: e47110e90584 ("mm/vunmap: add cond_resched() in vunmap_pmd_range")
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Harish Sriram <harish@linux.ibm.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201117202916.GA3856507@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomm: list_lru: set shrinker map bit when child nr_items is not zero
Yang Shi [Sun, 6 Dec 2020 06:14:48 +0000 (22:14 -0800)]
mm: list_lru: set shrinker map bit when child nr_items is not zero

When investigating a slab cache bloat problem, significant amount of
negative dentry cache was seen, but confusingly they neither got shrunk
by reclaimer (the host has very tight memory) nor be shrunk by dropping
cache.  The vmcore shows there are over 14M negative dentry objects on
lru, but tracing result shows they were even not scanned at all.

Further investigation shows the memcg's vfs shrinker_map bit is not set.
So the reclaimer or dropping cache just skip calling vfs shrinker.  So
we have to reboot the hosts to get the memory back.

I didn't manage to come up with a reproducer in test environment, and
the problem can't be reproduced after rebooting.  But it seems there is
race between shrinker map bit clear and reparenting by code inspection.
The hypothesis is elaborated as below.

The memcg hierarchy on our production environment looks like:

                root
               /    \
          system   user

The main workloads are running under user slice's children, and it
creates and removes memcg frequently.  So reparenting happens very often
under user slice, but no task is under user slice directly.

So with the frequent reparenting and tight memory pressure, the below
hypothetical race condition may happen:

       CPU A                            CPU B
reparent
    dst->nr_items == 0
                                 shrinker:
                                     total_objects == 0
    add src->nr_items to dst
    set_bit
                                     return SHRINK_EMPTY
                                     clear_bit
child memcg offline
    replace child's kmemcg_id with
    parent's (in memcg_offline_kmem())
                                  list_lru_del() between shrinker runs
                                     see parent's kmemcg_id
                                     dec dst->nr_items
reparent again
    dst->nr_items may go negative
    due to concurrent list_lru_del()

                                 The second run of shrinker:
                                     read nr_items without any
                                     synchronization, so it may
                                     see intermediate negative
                                     nr_items then total_objects
                                     may return 0 coincidently

                                     keep the bit cleared
    dst->nr_items != 0
    skip set_bit
    add scr->nr_item to dst

After this point dst->nr_item may never go zero, so reparenting will not
set shrinker_map bit anymore.  And since there is no task under user
slice directly, so no new object will be added to its lru to set the
shrinker map bit either.  That bit is kept cleared forever.

How does list_lru_del() race with reparenting? It is because reparenting
replaces children's kmemcg_id to parent's without protecting from
nlru->lock, so list_lru_del() may see parent's kmemcg_id but actually
deleting items from child's lru, but dec'ing parent's nr_items, so the
parent's nr_items may go negative as commit 2788cf0c401c ("memcg:
reparent list_lrus and free kmemcg_id on css offline") says.

Since it is impossible that dst->nr_items goes negative and
src->nr_items goes zero at the same time, so it seems we could set the
shrinker map bit iff src->nr_items != 0.  We could synchronize
list_lru_count_one() and reparenting with nlru->lock, but it seems
checking src->nr_items in reparenting is the simplest and avoids lock
contention.

Fixes: fae91d6d8be5 ("mm/list_lru.c: set bit in memcg shrinker bitmap on first list_lru item appearance")
Suggested-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: <stable@vger.kernel.org> [4.19]
Link: https://lkml.kernel.org/r/20201202171749.264354-1-shy828301@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomm: memcg/slab: fix obj_cgroup_charge() return value handling
Roman Gushchin [Sun, 6 Dec 2020 06:14:45 +0000 (22:14 -0800)]
mm: memcg/slab: fix obj_cgroup_charge() return value handling

Commit 10befea91b61 ("mm: memcg/slab: use a single set of kmem_caches
for all allocations") introduced a regression into the handling of the
obj_cgroup_charge() return value.  If a non-zero value is returned
(indicating of exceeding one of memory.max limits), the allocation
should fail, instead of falling back to non-accounted mode.

To make the code more readable, move memcg_slab_pre_alloc_hook() and
memcg_slab_post_alloc_hook() calling conditions into bodies of these
hooks.

Fixes: 10befea91b61 ("mm: memcg/slab: use a single set of kmem_caches for all allocations")
Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201127161828.GD840171@carbon.dhcp.thefacebook.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agocoredump: fix core_pattern parse error
Menglong Dong [Sun, 6 Dec 2020 06:14:42 +0000 (22:14 -0800)]
coredump: fix core_pattern parse error

'format_corename()' will splite 'core_pattern' on spaces when it is in
pipe mode, and take helper_argv[0] as the path to usermode executable.
It works fine in most cases.

However, if there is a space between '|' and '/file/path', such as
'| /usr/lib/systemd/systemd-coredump %P %u %g', then helper_argv[0] will
be parsed as '', and users will get a 'Core dump to | disabled'.

It is not friendly to users, as the pattern above was valid previously.
Fix this by ignoring the spaces between '|' and '/file/path'.

Fixes: 315c69261dd3 ("coredump: split pipe command whitespace before expanding template")
Signed-off-by: Menglong Dong <dong.menglong@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Paul Wise <pabs3@bonedaddy.net>
Cc: Jakub Wilk <jwilk@jwilk.net> [https://bugs.debian.org/924398]
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/5fb62870.1c69fb81.8ef5d.af76@mx.google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agozlib: export S390 symbols for zlib modules
Randy Dunlap [Sun, 6 Dec 2020 06:14:38 +0000 (22:14 -0800)]
zlib: export S390 symbols for zlib modules

Fix build errors when ZLIB_INFLATE=m and ZLIB_DEFLATE=m and ZLIB_DFLTCC=y
by exporting the 2 needed symbols in dfltcc_inflate.c.

Fixes these build errors:

  ERROR: modpost: "dfltcc_inflate" [lib/zlib_inflate/zlib_inflate.ko] undefined!
  ERROR: modpost: "dfltcc_can_inflate" [lib/zlib_inflate/zlib_inflate.ko] undefined!

Fixes: 126196100063 ("lib/zlib: add s390 hardware support for kernel zlib_inflate")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Link: https://lkml.kernel.org/r/20201123191712.4882-1-rdunlap@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agokbuild: avoid split lines in .mod files
Masahiro Yamada [Thu, 3 Dec 2020 17:55:51 +0000 (02:55 +0900)]
kbuild: avoid split lines in .mod files

"xargs echo" is not a safe way to remove line breaks because the input
may exceed the command line limit and xargs may break it up into
multiple invocations of echo. This should never happen because
scripts/gen_autoksyms.sh expects all undefined symbols are placed in
the second line of .mod files.

One possible way is to replace "xargs echo" with
"sed ':x;N;$!bx;s/\n/ /g'" or something, but I rewrote the code by
using awk because it is more readable.

This issue was reported by Sami Tolvanen; in his Clang LTO patch set,
$(multi-used-m) is no longer an ELF object, but a thin archive that
contains LLVM bitcode files. llvm-nm prints out symbols for each
archive member separately, which results a lot of dupications, in some
places, beyond the system-defined limit.

This problem must be fixed irrespective of LTO, and we must ensure
zero possibility of having this issue.

Link: https://lkml.org/lkml/2020/12/1/1658
Reported-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
4 years agoRevert "mei: virtio: virtualization frontend driver"
Michael S. Tsirkin [Sat, 5 Dec 2020 19:38:46 +0000 (14:38 -0500)]
Revert "mei: virtio: virtualization frontend driver"

This reverts commit d162219c655c8cf8003128a13840d6c1e183fb80.

The device uses a VIRTIO device ID out of a not-for-production range.
Releasing Linux using an ID out of this range will make it conflict with
development setups. An official request to reserve an ID for an MEI
device is yet to be submitted to the virtio TC, thus there's no chance
it will be reserved and fixed in time before the next release.

Once requested it usually takes 2-3 weeks to land in the spec, which
means the device can be supported with the official ID in the next Linux
version if contributors act quickly.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: Alexander Usyskin <alexander.usyskin@intel.com>
Cc: Wang Yu <yu1.wang@intel.com>
Cc: Liu Shuo <shuo.a.liu@intel.com>
Link: https://lore.kernel.org/r/20201205193625.469773-1-mst@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 years agox86/sev-es: Use new for_each_insn_prefix() macro to loop over prefixes bytes
Masami Hiramatsu [Thu, 3 Dec 2020 04:51:01 +0000 (13:51 +0900)]
x86/sev-es: Use new for_each_insn_prefix() macro to loop over prefixes bytes

Since insn.prefixes.nbytes can be bigger than the size of
insn.prefixes.bytes[] when a prefix is repeated, the proper
check must be:

  insn.prefixes.bytes[i] != 0 and i < 4

instead of using insn.prefixes.nbytes. Use the new
for_each_insn_prefix() macro which does it correctly.

Debugged by Kees Cook <keescook@chromium.org>.

 [ bp: Massage commit message. ]

Fixes: 25189d08e516 ("x86/sev-es: Add support for handling IOIO exceptions")
Reported-by: syzbot+9b64b619f10f19d19a7c@syzkaller.appspotmail.com
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/160697106089.3146288.2052422845039649176.stgit@devnote2
4 years agox86/insn-eval: Use new for_each_insn_prefix() macro to loop over prefixes bytes
Masami Hiramatsu [Thu, 3 Dec 2020 04:50:50 +0000 (13:50 +0900)]
x86/insn-eval: Use new for_each_insn_prefix() macro to loop over prefixes bytes

Since insn.prefixes.nbytes can be bigger than the size of
insn.prefixes.bytes[] when a prefix is repeated, the proper check must
be

  insn.prefixes.bytes[i] != 0 and i < 4

instead of using insn.prefixes.nbytes. Use the new
for_each_insn_prefix() macro which does it correctly.

Debugged by Kees Cook <keescook@chromium.org>.

 [ bp: Massage commit message. ]

Fixes: 32d0b95300db ("x86/insn-eval: Add utility functions to get segment selector")
Reported-by: syzbot+9b64b619f10f19d19a7c@syzkaller.appspotmail.com
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/160697104969.3146288.16329307586428270032.stgit@devnote2
4 years agox86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes
Masami Hiramatsu [Thu, 3 Dec 2020 04:50:37 +0000 (13:50 +0900)]
x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes

Since insn.prefixes.nbytes can be bigger than the size of
insn.prefixes.bytes[] when a prefix is repeated, the proper check must
be

  insn.prefixes.bytes[i] != 0 and i < 4

instead of using insn.prefixes.nbytes.

Introduce a for_each_insn_prefix() macro for this purpose. Debugged by
Kees Cook <keescook@chromium.org>.

 [ bp: Massage commit message, sync with the respective header in tools/
   and drop "we". ]

Fixes: 2b1444983508 ("uprobes, mm, x86: Add the ability to install and remove uprobes breakpoints")
Reported-by: syzbot+9b64b619f10f19d19a7c@syzkaller.appspotmail.com
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/160697103739.3146288.7437620795200799020.stgit@devnote2
4 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Sun, 6 Dec 2020 00:16:34 +0000 (16:16 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:
 "A fix for 'RETRIGEN' handling in Atmel touch controllers that was
  causing lost interrupts on systems using edge-triggered interrupts, a
  quirk for i8042 driver, and a couple more fixes."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: atmel_mxt_ts - fix lost interrupts
  Input: xpad - support Ardwiino Controllers
  Input: i8042 - add ByteSpeed touchpad to noloop table
  Input: i8042 - fix error return code in i8042_setup_aux()
  Input: soc_button_array - add missing include

4 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 5 Dec 2020 23:27:22 +0000 (15:27 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Some more I2C driver updates. IMX updates are a tad bigger, but not
  exceptionally big"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: mlxbf: Fix the return check of devm_ioremap and ioremap
  i2c: mlxbf: select CONFIG_I2C_SLAVE
  i2c: imx: Don't generate STOP condition if arbitration has been lost
  i2c: imx: Check for I2SR_IAL after every byte
  i2c: imx: Fix reset of I2SR_IAL flag
  i2c: qcom: Fix IRQ error misassignement
  i2c: qup: Fix error return code in qup_i2c_bam_schedule_desc()

4 years agoMerge tag 'block-5.10-2020-12-05' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 5 Dec 2020 22:45:30 +0000 (14:45 -0800)]
Merge tag 'block-5.10-2020-12-05' of git://git.kernel.dk/linux-block

Pull block fix from Jens Axboe:
 "Single fix for an issue with chunk_sectors and stacked devices"

* tag 'block-5.10-2020-12-05' of git://git.kernel.dk/linux-block:
  block: use gcd() to fix chunk_sectors limit stacking

4 years agoMerge tag 'io_uring-5.10-2020-12-05' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 5 Dec 2020 22:39:59 +0000 (14:39 -0800)]
Merge tag 'io_uring-5.10-2020-12-05' of git://git.kernel.dk/linux-block

Pull io_uring fix from Jens Axboe:
 "Just a small fix this time, for an issue with 32-bit compat apps and
  buffer selection with recvmsg"

* tag 'io_uring-5.10-2020-12-05' of git://git.kernel.dk/linux-block:
  io_uring: fix recvmsg setup with compat buf-select

4 years agoMerge tag 'powerpc-5.10-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sat, 5 Dec 2020 19:16:21 +0000 (11:16 -0800)]
Merge tag 'powerpc-5.10-5' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Some more powerpc fixes for 5.10:

   - Three commits fixing possible missed TLB invalidations for
     multi-threaded processes when CPUs are hotplugged in and out.

   - A fix for a host crash triggerable by host userspace (qemu) in KVM
     on Power9.

   - A fix for a host crash in machine check handling when running HPT
     guests on a HPT host.

   - One commit fixing potential missed TLB invalidations when using the
     hash MMU on Power9 or later.

   - A regression fix for machines with CPUs on node 0 but no memory.

  Thanks to Aneesh Kumar K.V, Cédric Le Goater, Greg Kurz, Milan
  Mohanty, Milton Miller, Nicholas Piggin, Paul Mackerras, and Srikar
  Dronamraju"

* tag 'powerpc-5.10-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s/powernv: Fix memory corruption when saving SLB entries on MCE
  KVM: PPC: Book3S HV: XIVE: Fix vCPU id sanity check
  powerpc/numa: Fix a regression on memoryless node 0
  powerpc/64s: Trim offlined CPUs from mm_cpumasks
  kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling
  powerpc/64s/pseries: Fix hash tlbiel_all_isa300 for guest kernels
  powerpc/64s: Fix hash ISA v3.0 TLBIEL instruction generation

4 years agoMerge tag '5.10-rc6-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 5 Dec 2020 19:09:07 +0000 (11:09 -0800)]
Merge tag '5.10-rc6-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Three smb3 fixes (two for stable) fixing

   - a null pointer issue in a DFS error path

   - a problem with excessive padding when mounted with "idsfromsid"
     causing owner fields to get corrupted

   - a more recent problem with compounded reparse point query found in
     testing to the Linux kernel server"

* tag '5.10-rc6-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: refactor create_sd_buf() and and avoid corrupting the buffer
  cifs: add NULL check for ses->tcon_ipc
  smb3: set COMPOUND_FID to FileID field of subsequent compound request

4 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 5 Dec 2020 18:59:21 +0000 (10:59 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Four small fixes in two drivers.

  The mpt3sas fixes are all problems with timeout under unusual
  conditions, and the storvsc is a missed incoming packet validation
  and a missed error return"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: mpt3sas: Increase IOCInit request timeout to 30s
  scsi: mpt3sas: Fix ioctl timeout
  scsi: storvsc: Validate length of incoming packet in storvsc_on_channel_callback()
  scsi: storvsc: Fix error return in storvsc_probe()

4 years agoMerge tag 'for-5.10/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 5 Dec 2020 18:51:25 +0000 (10:51 -0800)]
Merge tag 'for-5.10/dm-fixes-2' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull fix for device mapper fixes from Mike Snitzer:
 "Apologies for the glaring bug I introduced with my previous pull
  request!

  Fix incorrect branching at top of blk_max_size_offset()"

* tag 'for-5.10/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  block: fix incorrect branching in blk_max_size_offset()

4 years agoi2c: mlxbf: Fix the return check of devm_ioremap and ioremap
Wang Xiaojun [Thu, 3 Dec 2020 01:46:47 +0000 (20:46 -0500)]
i2c: mlxbf: Fix the return check of devm_ioremap and ioremap

devm_ioremap and ioremap may return NULL which cannot be checked
by IS_ERR.

Signed-off-by: Wang Xiaojun <wangxiaojun11@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Khalil Blaiech <kblaiech@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
4 years agoi2c: mlxbf: select CONFIG_I2C_SLAVE
Arnd Bergmann [Thu, 3 Dec 2020 22:32:50 +0000 (23:32 +0100)]
i2c: mlxbf: select CONFIG_I2C_SLAVE

If this is not enabled, the interfaces used in this driver do not work:

drivers/i2c/busses/i2c-mlxbf.c:1888:3: error: implicit declaration of function 'i2c_slave_event' [-Werror,-Wimplicit-function-declaration]
                i2c_slave_event(slave, I2C_SLAVE_WRITE_REQUESTED, &value);
                ^
drivers/i2c/busses/i2c-mlxbf.c:1888:26: error: use of undeclared identifier 'I2C_SLAVE_WRITE_REQUESTED'
                i2c_slave_event(slave, I2C_SLAVE_WRITE_REQUESTED, &value);
                                       ^
drivers/i2c/busses/i2c-mlxbf.c:1890:32: error: use of undeclared identifier 'I2C_SLAVE_WRITE_RECEIVED'
                ret = i2c_slave_event(slave, I2C_SLAVE_WRITE_RECEIVED,
                                             ^
drivers/i2c/busses/i2c-mlxbf.c:1892:26: error: use of undeclared identifier 'I2C_SLAVE_STOP'
                i2c_slave_event(slave, I2C_SLAVE_STOP, &value);
                                       ^

Fixes: b5b5b32081cd ("i2c: mlxbf: I2C SMBus driver for Mellanox BlueField SoC")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Khalil Blaiech <kblaiech@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
4 years agoblock: fix incorrect branching in blk_max_size_offset()
Mike Snitzer [Fri, 4 Dec 2020 22:21:03 +0000 (17:21 -0500)]
block: fix incorrect branching in blk_max_size_offset()

If non-zero 'chunk_sectors' is passed in to blk_max_size_offset() that
override will be incorrectly ignored.

Old blk_max_size_offset() branching, prior to commit 3ee16db390b4,
must be used only if passed 'chunk_sectors' override is zero.

Fixes: 3ee16db390b4 ("dm: fix IO splitting")
Cc: stable@vger.kernel.org # 5.9
Reported-by: John Dorminy <jdorminy@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
4 years agoMerge tag 'for-5.10/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
Linus Torvalds [Fri, 4 Dec 2020 21:28:39 +0000 (13:28 -0800)]
Merge tag 'for-5.10/dm-fixes' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - Fix DM's bio splitting changes that were made during v5.9. This
   restores splitting in terms of varied per-target ti->max_io_len
   rather than use block core's single stacked 'chunk_sectors' limit.

 - Like DM crypt, update DM integrity to not use crypto drivers that
   have CRYPTO_ALG_ALLOCATES_MEMORY set.

 - Fix DM writecache target's argument parsing and status display.

 - Remove needless BUG() from dm writecache's persistent_memory_claim()

 - Remove old gcc workaround in DM cache target's block_div() for ARM
   link errors now that gcc >= 4.9 is required.

 - Fix RCU locking in dm_blk_report_zones and dm_dax_zero_page_range.

 - Remove old, and now frowned upon, BUG_ON(in_interrupt()) in
   dm_table_event().

 - Remove invalid sparse annotations from dm_prepare_ioctl() and
   dm_unprepare_ioctl().

* tag 'for-5.10/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm: remove invalid sparse __acquires and __releases annotations
  dm: fix double RCU unlock in dm_dax_zero_page_range() error path
  dm: fix IO splitting
  dm writecache: remove BUG() and fail gracefully instead
  dm table: Remove BUG_ON(in_interrupt())
  dm: fix bug with RCU locking in dm_blk_report_zones
  Revert "dm cache: fix arm link errors with inline"
  dm writecache: fix the maximum number of arguments
  dm writecache: advance the number of arguments when reporting max_age
  dm integrity: don't use drivers that have CRYPTO_ALG_ALLOCATES_MEMORY

4 years agodm: remove invalid sparse __acquires and __releases annotations
Mike Snitzer [Fri, 4 Dec 2020 20:25:18 +0000 (15:25 -0500)]
dm: remove invalid sparse __acquires and __releases annotations

Fixes sparse warnings:
drivers/md/dm.c:508:12: warning: context imbalance in 'dm_prepare_ioctl' - wrong count at exit
drivers/md/dm.c:543:13: warning: context imbalance in 'dm_unprepare_ioctl' - wrong count at exit

Fixes: 971888c46993f ("dm: hold DM table for duration of ioctl rather than use blkdev_get")
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
4 years agodm: fix double RCU unlock in dm_dax_zero_page_range() error path
Mike Snitzer [Fri, 4 Dec 2020 20:19:27 +0000 (15:19 -0500)]
dm: fix double RCU unlock in dm_dax_zero_page_range() error path

Remove redundant dm_put_live_table() in dm_dax_zero_page_range() error
path to fix sparse warning:
drivers/md/dm.c:1208:9: warning: context imbalance in 'dm_dax_zero_page_range' - unexpected unlock

Fixes: cdf6cdcd3b99a ("dm,dax: Add dax zero_page_range operation")
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
4 years agodm: fix IO splitting
Mike Snitzer [Mon, 30 Nov 2020 15:57:43 +0000 (10:57 -0500)]
dm: fix IO splitting

Commit 882ec4e609c1 ("dm table: stack 'chunk_sectors' limit to account
for target-specific splitting") caused a couple regressions:
1) Using lcm_not_zero() when stacking chunk_sectors was a bug because
   chunk_sectors must reflect the most limited of all devices in the
   IO stack.
2) DM targets that set max_io_len but that do _not_ provide an
   .iterate_devices method no longer had there IO split properly.

And commit 5091cdec56fa ("dm: change max_io_len() to use
blk_max_size_offset()") also caused a regression where DM no longer
supported varied (per target) IO splitting. The implication being the
potential for severely reduced performance for IO stacks that use a DM
target like dm-cache to hide performance limitations of a slower
device (e.g. one that requires 4K IO splitting).

Coming full circle: Fix all these issues by discontinuing stacking
chunk_sectors up using ti->max_io_len in dm_calculate_queue_limits(),
add optional chunk_sectors override argument to blk_max_size_offset()
and update DM's max_io_len() to pass ti->max_io_len to its
blk_max_size_offset() call.

Passing in an optional chunk_sectors override to blk_max_size_offset()
allows for code reuse of block's centralized calculation for max IO
size based on provided offset and split boundary.

Fixes: 882ec4e609c1 ("dm table: stack 'chunk_sectors' limit to account for target-specific splitting")
Fixes: 5091cdec56fa ("dm: change max_io_len() to use blk_max_size_offset()")
Cc: stable@vger.kernel.org
Reported-by: John Dorminy <jdorminy@redhat.com>
Reported-by: Bruce Johnston <bjohnsto@redhat.com>
Reported-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Reviewed-by: John Dorminy <jdorminy@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
4 years agoMerge tag 'drm-fixes-2020-12-04' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 4 Dec 2020 17:25:22 +0000 (09:25 -0800)]
Merge tag 'drm-fixes-2020-12-04' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "This week's regular fixes.

  i915 has fixes for a few races, use-after-free, and gpu hangs. Tegra
  just has some minor fixes that I didn't see much point in hanging on
  to. The nouveau fix is for all pre-nv50 cards and was reported a few
  times. Otherwise it's just some amdgpu, and a few misc fixes.

  Summary:

  amdgpu:
   - SMU11 manual fan fix
   - Renoir display clock fix
   - VCN3 dynamic powergating fix

  i915:
   - Program mocs:63 for cache eviction on gen9 (Chris)
   - Protect context lifetime with RCU (Chris)
   - Split the breadcrumb spinlock between global and contexts (Chris)
   - Retain default context state across shrinking (Venkata)
   - Limit frequency drop to RPe on parking (Chris)
   - Return earlier from intel_modeset_init() without display (Jani)
   - Defer initial modeset until after GGTT is initialized (Chris)

  nouveau:
   - pre-nv50 regression fix

  rockchip:
   - uninitialised LVDS property fix

  omap:
   - bridge fix

  panel:
   - race fix

  mxsfb:
   - fence sync fix
   - modifiers fix

  tegra:
   - idr init fix
   - sor fixes
   - output/of cleanup fix"

* tag 'drm-fixes-2020-12-04' of git://anongit.freedesktop.org/drm/drm: (22 commits)
  drm/amdgpu/vcn3.0: remove old DPG workaround
  drm/amdgpu/vcn3.0: stall DPG when WPTR/RPTR reset
  drm/amd/display: Init clock value by current vbios CLKs
  drm/amdgpu/pm/smu11: Fix fan set speed bug
  drm/i915/display: Defer initial modeset until after GGTT is initialised
  drm/i915/display: return earlier from intel_modeset_init() without display
  drm/i915/gt: Limit frequency drop to RPe on parking
  drm/i915/gt: Retain default context state across shrinking
  drm/i915/gt: Split the breadcrumb spinlock between global and contexts
  drm/i915/gt: Protect context lifetime with RCU
  drm/i915/gt: Program mocs:63 for cache eviction on gen9
  drm/omap: sdi: fix bridge enable/disable
  drm/panel: sony-acx565akm: Fix race condition in probe
  drm/rockchip: Avoid uninitialized use of endpoint id in LVDS
  drm/tegra: sor: Disable clocks on error in tegra_sor_init()
  drm/nouveau: make sure ret is initialized in nouveau_ttm_io_mem_reserve
  drm: mxsfb: Implement .format_mod_supported
  drm: mxsfb: fix fence synchronization
  drm/tegra: output: Do not put OF node twice
  drm/tegra: replace idr_init() by idr_init_base()
  ...

4 years agotty: Fix ->session locking
Jann Horn [Thu, 3 Dec 2020 01:25:05 +0000 (02:25 +0100)]
tty: Fix ->session locking

Currently, locking of ->session is very inconsistent; most places
protect it using the legacy tty mutex, but disassociate_ctty(),
__do_SAK(), tiocspgrp() and tiocgsid() don't.
Two of the writers hold the ctrl_lock (because they already need it for
->pgrp), but __proc_set_tty() doesn't do that yet.

On a PREEMPT=y system, an unprivileged user can theoretically abuse
this broken locking to read 4 bytes of freed memory via TIOCGSID if
tiocgsid() is preempted long enough at the right point. (Other things
might also go wrong, especially if root-only ioctls are involved; I'm
not sure about that.)

Change the locking on ->session such that:

 - tty_lock() is held by all writers: By making disassociate_ctty()
   hold it. This should be fine because the same lock can already be
   taken through the call to tty_vhangup_session().
   The tricky part is that we need to shorten the area covered by
   siglock to be able to take tty_lock() without ugly retry logic; as
   far as I can tell, this should be fine, since nothing in the
   signal_struct is touched in the `if (tty)` branch.
 - ctrl_lock is held by all writers: By changing __proc_set_tty() to
   hold the lock a little longer.
 - All readers that aren't holding tty_lock() hold ctrl_lock: By
   adding locking to tiocgsid() and __do_SAK(), and expanding the area
   covered by ctrl_lock in tiocspgrp().

Cc: stable@kernel.org
Signed-off-by: Jann Horn <jannh@google.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 years agotty: Fix ->pgrp locking in tiocspgrp()
Jann Horn [Thu, 3 Dec 2020 01:25:04 +0000 (02:25 +0100)]
tty: Fix ->pgrp locking in tiocspgrp()

tiocspgrp() takes two tty_struct pointers: One to the tty that userspace
passed to ioctl() (`tty`) and one to the TTY being changed (`real_tty`).
These pointers are different when ioctl() is called with a master fd.

To properly lock real_tty->pgrp, we must take real_tty->ctrl_lock.

This bug makes it possible for racing ioctl(TIOCSPGRP, ...) calls on
both sides of a PTY pair to corrupt the refcount of `struct pid`,
leading to use-after-free errors.

Fixes: 47f86834bbd4 ("redo locking of tty->pgrp")
CC: stable@kernel.org
Signed-off-by: Jann Horn <jannh@google.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 years agousb: gadget: f_fs: Use local copy of descriptors for userspace copy
Vamsi Krishna Samavedam [Mon, 30 Nov 2020 20:34:53 +0000 (12:34 -0800)]
usb: gadget: f_fs: Use local copy of descriptors for userspace copy

The function may be unbound causing the ffs_ep and its descriptors
to be freed while userspace is in the middle of an ioctl requesting
the same descriptors. Avoid dangling pointer reference by first
making a local copy of desctiptors before releasing the spinlock.

Fixes: c559a3534109 ("usb: gadget: f_fs: add ioctl returning ep descriptor")
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Vamsi Krishna Samavedam <vskrishn@codeaurora.org>
Signed-off-by: Jack Pham <jackp@codeaurora.org>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20201130203453.28154-1-jackp@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 years agousb: ohci-omap: Fix descriptor conversion
Linus Walleij [Mon, 30 Nov 2020 08:30:33 +0000 (09:30 +0100)]
usb: ohci-omap: Fix descriptor conversion

There were a bunch of issues with the patch converting the
OMAP1 OSK board to use descriptors for controlling the USB
host:

- The chip label was incorrect
- The GPIO offset was off-by-one
- The code should use sleeping accessors

This patch tries to fix all issues at the same time.

Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Fixes: 15d157e87443 ("usb: ohci-omap: Convert to use GPIO descriptors")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20201130083033.29435-1-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 years agoRevert "usb-storage: fix sdev->host->dma_dev"
Greg Kroah-Hartman [Fri, 4 Dec 2020 15:01:23 +0000 (16:01 +0100)]
Revert "usb-storage: fix sdev->host->dma_dev"

This reverts commit 0154012f8018bba4d9971d1007c12ffd48539ddb as Hans
reports it causes problems on some systems.  Until a "real" fix for this
can be found, revert this change to get normal functionality back.

Link: https://lore.kernel.org/r/70ca74c2-4a80-e25b-eca9-a63a75516673@redhat.com
Cc: Tom Yan <tom.ty89@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 years agoRevert "uas: fix sdev->host->dma_dev"
Greg Kroah-Hartman [Fri, 4 Dec 2020 15:00:34 +0000 (16:00 +0100)]
Revert "uas: fix sdev->host->dma_dev"

This reverts commit 558033c2828f832ab3b68c6f8b8710e0de6faef0 as Hans
reports it causes problems on some systems.  Until a "real" fix for this
can be found, revert this change to get normal functionality back.

Link: https://lore.kernel.org/r/70ca74c2-4a80-e25b-eca9-a63a75516673@redhat.com
Cc: Tom Yan <tom.ty89@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 years agoRevert "uas: bump hw_max_sectors to 2048 blocks for SS or faster drives"
Greg Kroah-Hartman [Fri, 4 Dec 2020 14:59:27 +0000 (15:59 +0100)]
Revert "uas: bump hw_max_sectors to 2048 blocks for SS or faster drives"

This reverts commit 5df7ef7d32fec1d6d1c34dbec019b461a12ce870 as Hans
reports it causes problems on some systems.  Until a "real" fix for this
can be found, revert this change to get normal functionality back.

Link: https://lore.kernel.org/r/70ca74c2-4a80-e25b-eca9-a63a75516673@redhat.com
Cc: Tom Yan <tom.ty89@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
4 years agoMerge tag 'usb-serial-5.10-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Fri, 4 Dec 2020 12:15:55 +0000 (13:15 +0100)]
Merge tag 'usb-serial-5.10-rc7' of https://git./linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for 5.10-rc7

Here's a fix for a regression in the option driver which has been
backported to the stable trees and fix for a small memory leak on open
in the kl5kusb105 driver.

Included are also various new device ids.

All but the memleak fix has been in linux-next and with no reported
issues.

* tag 'usb-serial-5.10-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
  USB: serial: kl5kusb105: fix memleak on open
  USB: serial: ch341: sort device-id entries
  USB: serial: ch341: add new Product ID for CH341A
  USB: serial: option: fix Quectel BG96 matching
  USB: serial: option: add support for Thales Cinterion EXS82
  USB: serial: option: add Fibocom NL668 variants

4 years agoUSB: serial: kl5kusb105: fix memleak on open
Johan Hovold [Fri, 4 Dec 2020 08:55:19 +0000 (09:55 +0100)]
USB: serial: kl5kusb105: fix memleak on open

Fix memory leak of control-message transfer buffer on successful open().

Fixes: 6774d5f53271 ("USB: serial: kl5kusb105: fix open error path")
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
4 years agoMerge tag 'drm-misc-fixes-2020-12-03' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Fri, 4 Dec 2020 01:53:43 +0000 (11:53 +1000)]
Merge tag 'drm-misc-fixes-2020-12-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

One bridge fix for OMAP, one for a race condition in a panel, two for
uninitialized variables in rockchip and nouveau, and two fixes for mxsfb
to fix a regression with modifiers and a fix for a fence synchronization
issue.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20201203125943.h2ft2xoywunt5orl@gilmour
4 years agoMerge tag 'amd-drm-fixes-5.10-2020-12-02' of git://people.freedesktop.org/~agd5f...
Dave Airlie [Fri, 4 Dec 2020 01:48:37 +0000 (11:48 +1000)]
Merge tag 'amd-drm-fixes-5.10-2020-12-02' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

amd-drm-fixes-5.10-2020-12-02:

amdgpu:
- SMU11 manual fan fix
- Renoir display clock fix
- VCN3 dynamic powergating fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201203044815.41257-1-alexander.deucher@amd.com
4 years agoMerge tag 'drm-intel-fixes-2020-12-03' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Fri, 4 Dec 2020 01:45:37 +0000 (11:45 +1000)]
Merge tag 'drm-intel-fixes-2020-12-03' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

Fixes for GPU hang, null dereference, suspend-resume, power consumption, and use-after-free.

- Program mocs:63 for cache eviction on gen9 (Chris)
- Protect context lifetime with RCU (Chris)
- Split the breadcrumb spinlock between global and contexts (Chris)
- Retain default context state across shrinking (Venkata)
- Limit frequency drop to RPe on parking (Chris)
- Return earlier from intel_modeset_init() without display (Jani)
- Defer initial modeset until after GGTT is initialized (Chris)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201203134705.GA1575873@intel.com
4 years agocifs: refactor create_sd_buf() and and avoid corrupting the buffer
Ronnie Sahlberg [Mon, 30 Nov 2020 01:29:20 +0000 (11:29 +1000)]
cifs: refactor create_sd_buf() and and avoid corrupting the buffer

When mounting with "idsfromsid" mount option, Azure
corrupted the owner SIDs due to excessive padding
caused by placing the owner fields at the end of the
security descriptor on create.  Placing owners at the
front of the security descriptor (rather than the end)
is also safer, as the number of ACEs (that follow it)
are variable.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Suggested-by: Rohith Surabattula <rohiths@microsoft.com>
CC: Stable <stable@vger.kernel.org> # v5.8
Signed-off-by: Steve French <stfrench@microsoft.com>
4 years agocifs: add NULL check for ses->tcon_ipc
Aurelien Aptel [Thu, 3 Dec 2020 18:46:08 +0000 (19:46 +0100)]
cifs: add NULL check for ses->tcon_ipc

In some scenarios (DFS and BAD_NETWORK_NAME) set_root_set() can be
called with a NULL ses->tcon_ipc.

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
4 years agosmb3: set COMPOUND_FID to FileID field of subsequent compound request
Namjae Jeon [Thu, 3 Dec 2020 03:31:36 +0000 (12:31 +0900)]
smb3: set COMPOUND_FID to FileID field of subsequent compound request

For an operation compounded with an SMB2 CREATE request, client must set
COMPOUND_FID(0xFFFFFFFFFFFFFFFF) to FileID field of smb2 ioctl.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Fixes: 2e4564b31b645 ("smb3: add support stat of WSL reparse points for special file types")
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
4 years agoMerge tag 'net-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 3 Dec 2020 21:10:11 +0000 (13:10 -0800)]
Merge tag 'net-5.10-rc7' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Networking fixes for 5.10-rc7, including fixes from bpf, netfilter,
  wireless drivers, wireless mesh and can.

  Current release - regressions:

   - mt76: usb: fix crash on device removal

  Current release - always broken:

   - xsk: Fix umem cleanup from wrong context in socket destruct

  Previous release - regressions:

   - net: ip6_gre: set dev->hard_header_len when using header_ops

   - ipv4: Fix TOS mask in inet_rtm_getroute()

   - net, xsk: Avoid taking multiple skbuff references

  Previous release - always broken:

   - net/x25: prevent a couple of overflows

   - netfilter: ipset: prevent uninit-value in hash_ip6_add

   - geneve: pull IP header before ECN decapsulation

   - mpls: ensure LSE is pullable in TC and openvswitch paths

   - vxlan: respect needed_headroom of lower device

   - batman-adv: Consider fragmentation for needed packet headroom

   - can: drivers: don't count arbitration loss as an error

   - netfilter: bridge: reset skb->pkt_type after POST_ROUTING traversal

   - inet_ecn: Fix endianness of checksum update when setting ECT(1)

   - ibmvnic: fix various corner cases around reset handling

   - net/mlx5: fix rejecting unsupported Connect-X6DX SW steering

   - net/mlx5: Enforce HW TX csum offload with kTLS"

* tag 'net-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (62 commits)
  net/mlx5: DR, Proper handling of unsupported Connect-X6DX SW steering
  net/mlx5e: kTLS, Enforce HW TX csum offload with kTLS
  net: mlx5e: fix fs_tcp.c build when IPV6 is not enabled
  net/mlx5: Fix wrong address reclaim when command interface is down
  net/sched: act_mpls: ensure LSE is pullable before reading it
  net: openvswitch: ensure LSE is pullable before reading it
  net: skbuff: ensure LSE is pullable before decrementing the MPLS ttl
  net: mvpp2: Fix error return code in mvpp2_open()
  chelsio/chtls: fix a double free in chtls_setkey()
  rtw88: debug: Fix uninitialized memory in debugfs code
  vxlan: fix error return code in __vxlan_dev_create()
  net: pasemi: fix error return code in pasemi_mac_open()
  cxgb3: fix error return code in t3_sge_alloc_qset()
  net/x25: prevent a couple of overflows
  dpaa_eth: copy timestamp fields to new skb in A-050385 workaround
  net: ip6_gre: set dev->hard_header_len when using header_ops
  mt76: usb: fix crash on device removal
  iwlwifi: pcie: add some missing entries for AX210
  iwlwifi: pcie: invert values of NO_160 device config entries
  iwlwifi: pcie: add one missing entry for AX210
  ...

4 years agoMerge tag 's390-5.10-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Thu, 3 Dec 2020 19:58:26 +0000 (11:58 -0800)]
Merge tag 's390-5.10-6' of git://git./linux/kernel/git/s390/linux

Pull s390 fixes from Heiko Carstens:
 "One commit is fixing lockdep irq state tracing which broke with -rc6.

  The other one fixes logical vs physical CPU address mixup in our PCI
  code.

  Summary:

   - fix lockdep irq state tracing

   - fix logical vs physical CPU address confusion in PCI code"

* tag 's390-5.10-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: fix irq state tracing
  s390/pci: fix CPU address in MSI for directed IRQ

4 years agoMerge tag '9p-for-5.10-rc7' of git://github.com/martinetd/linux
Linus Torvalds [Thu, 3 Dec 2020 19:47:13 +0000 (11:47 -0800)]
Merge tag '9p-for-5.10-rc7' of git://github.com/martinetd/linux

Pull 9p fixes from Dominique Martinet:
 "Restore splice functionality for 9p"

* tag '9p-for-5.10-rc7' of git://github.com/martinetd/linux:
  fs: 9p: add generic splice_write file operation
  fs: 9p: add generic splice_read file operations

4 years agoMerge branch 'mlx5-fixes-2020-12-01'
Jakub Kicinski [Thu, 3 Dec 2020 19:18:37 +0000 (11:18 -0800)]
Merge branch 'mlx5-fixes-2020-12-01'

Saeed Mahameed says:

====================
mlx5 fixes 2020-12-01

This series introduces some fixes to mlx5 driver.
====================

Link: https://lore.kernel.org/r/20201203043946.235385-1-saeedm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet/mlx5: DR, Proper handling of unsupported Connect-X6DX SW steering
Yevgeny Kliteynik [Thu, 3 Dec 2020 04:39:46 +0000 (20:39 -0800)]
net/mlx5: DR, Proper handling of unsupported Connect-X6DX SW steering

STEs format for Connect-X5 and Connect-X6DX different. Currently, on
Connext-X6DX the SW steering would break at some point when building STEs
w/o giving a proper error message. Fix this by checking the STE format of
the current device when initializing domain: add mlx5_ifc definitions for
Connect-X6DX SW steering, read FW capability to get the current format
version, and check this version when domain is being created.

Fixes: 26d688e33f88 ("net/mlx5: DR, Add Steering entry (STE) utilities")
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet/mlx5e: kTLS, Enforce HW TX csum offload with kTLS
Tariq Toukan [Thu, 3 Dec 2020 04:39:45 +0000 (20:39 -0800)]
net/mlx5e: kTLS, Enforce HW TX csum offload with kTLS

Checksum calculation cannot be done in SW for TX kTLS HW offloaded
packets.
Offload it to the device, disregard the declared state of the TX
csum offload feature.

Fixes: d2ead1f360e8 ("net/mlx5e: Add kTLS TX HW offload support")
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: mlx5e: fix fs_tcp.c build when IPV6 is not enabled
Randy Dunlap [Thu, 3 Dec 2020 04:39:44 +0000 (20:39 -0800)]
net: mlx5e: fix fs_tcp.c build when IPV6 is not enabled

Fix build when CONFIG_IPV6 is not enabled by making a function
be built conditionally.

Fixes these build errors and warnings:

../drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c: In function 'accel_fs_tcp_set_ipv6_flow':
../include/net/sock.h:380:34: error: 'struct sock_common' has no member named 'skc_v6_daddr'; did you mean 'skc_daddr'?
  380 | #define sk_v6_daddr  __sk_common.skc_v6_daddr
      |                                  ^~~~~~~~~~~~
../drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c:55:14: note: in expansion of macro 'sk_v6_daddr'
   55 |         &sk->sk_v6_daddr, 16);
      |              ^~~~~~~~~~~
At top level:
../drivers/net/ethernet/mellanox/mlx5/core/en_accel/fs_tcp.c:47:13: warning: 'accel_fs_tcp_set_ipv6_flow' defined but not used [-Wunused-function]
   47 | static void accel_fs_tcp_set_ipv6_flow(struct mlx5_flow_spec *spec, struct sock *sk)

Fixes: 5229a96e59ec ("net/mlx5e: Accel, Expose flow steering API for rules add/del")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet/mlx5: Fix wrong address reclaim when command interface is down
Eran Ben Elisha [Thu, 3 Dec 2020 04:39:43 +0000 (20:39 -0800)]
net/mlx5: Fix wrong address reclaim when command interface is down

When command interface is down, driver to reclaim all 4K page chucks that
were hold by the Firmeware. Fix a bug for 64K page size systems, where
driver repeatedly released only the first chunk of the page.

Define helper function to fill 4K chunks for a given Firmware pages.
Iterate over all unreleased Firmware pages and call the hepler per each.

Fixes: 5adff6a08862 ("net/mlx5: Fix incorrect page count when in internal error")
Signed-off-by: Eran Ben Elisha <eranbe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet/sched: act_mpls: ensure LSE is pullable before reading it
Davide Caratti [Thu, 3 Dec 2020 09:37:52 +0000 (10:37 +0100)]
net/sched: act_mpls: ensure LSE is pullable before reading it

when 'act_mpls' is used to mangle the LSE, the current value is read from
the packet dereferencing 4 bytes at mpls_hdr(): ensure that the label is
contained in the skb "linear" area.

Found by code inspection.

v2:
 - use MPLS_HLEN instead of sizeof(new_lse), thanks to Jakub Kicinski

Fixes: 2a2ea50870ba ("net: sched: add mpls manipulation actions to TC")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/3243506cba43d14858f3bd21ee0994160e44d64a.1606987058.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: openvswitch: ensure LSE is pullable before reading it
Davide Caratti [Thu, 3 Dec 2020 09:46:06 +0000 (10:46 +0100)]
net: openvswitch: ensure LSE is pullable before reading it

when openvswitch is configured to mangle the LSE, the current value is
read from the packet dereferencing 4 bytes at mpls_hdr(): ensure that
the label is contained in the skb "linear" area.

Found by code inspection.

Fixes: d27cf5c59a12 ("net: core: add MPLS update core helper and use in OvS")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Link: https://lore.kernel.org/r/aa099f245d93218b84b5c056b67b6058ccf81a66.1606987185.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: skbuff: ensure LSE is pullable before decrementing the MPLS ttl
Davide Caratti [Thu, 3 Dec 2020 09:58:21 +0000 (10:58 +0100)]
net: skbuff: ensure LSE is pullable before decrementing the MPLS ttl

skb_mpls_dec_ttl() reads the LSE without ensuring that it is contained in
the skb "linear" area. Fix this calling pskb_may_pull() before reading the
current ttl.

Found by code inspection.

Fixes: 2a2ea50870ba ("net: sched: add mpls manipulation actions to TC")
Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Link: https://lore.kernel.org/r/53659f28be8bc336c113b5254dc637cc76bbae91.1606987074.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agoMerge tag 'wireless-drivers-2020-12-03' of git://git.kernel.org/pub/scm/linux/kernel...
Jakub Kicinski [Thu, 3 Dec 2020 18:59:28 +0000 (10:59 -0800)]
Merge tag 'wireless-drivers-2020-12-03' of git://git./linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for v5.10

Second, and most likely final, set of fixes for v5.10. Small fixes and
PCI id addtions.

iwlwifi
 * PCI id additions
mt76
 * fix a kernel crash during device removal
rtw88
 * fix uninitialized memory in debugfs code

* tag 'wireless-drivers-2020-12-03' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers:
  rtw88: debug: Fix uninitialized memory in debugfs code
  mt76: usb: fix crash on device removal
  iwlwifi: pcie: add some missing entries for AX210
  iwlwifi: pcie: invert values of NO_160 device config entries
  iwlwifi: pcie: add one missing entry for AX210
  iwlwifi: update MAINTAINERS entry
====================

Link: https://lore.kernel.org/r/20201203183408.EE88AC43461@smtp.codeaurora.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: mvpp2: Fix error return code in mvpp2_open()
Wang Hai [Thu, 3 Dec 2020 14:18:06 +0000 (22:18 +0800)]
net: mvpp2: Fix error return code in mvpp2_open()

Fix to return negative error code -ENOENT from invalid configuration
error handling case instead of 0, as done elsewhere in this function.

Fixes: 4bb043262878 ("net: mvpp2: phylink support")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201203141806.37966-1-wanghai38@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agochelsio/chtls: fix a double free in chtls_setkey()
Dan Carpenter [Thu, 3 Dec 2020 08:44:31 +0000 (11:44 +0300)]
chelsio/chtls: fix a double free in chtls_setkey()

The "skb" is freed by the transmit code in cxgb4_ofld_send() and we
shouldn't use it again.  But in the current code, if we hit an error
later on in the function then the clean up code will call kfree_skb(skb)
and so it causes a double free.

Set the "skb" to NULL and that makes the kfree_skb() a no-op.

Fixes: d25f2f71f653 ("crypto: chtls - Program the TLS session Key")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/X8ilb6PtBRLWiSHp@mwanda
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agouapi: fix statx attribute value overlap for DAX & MOUNT_ROOT
Eric Sandeen [Tue, 1 Dec 2020 23:21:40 +0000 (17:21 -0600)]
uapi: fix statx attribute value overlap for DAX & MOUNT_ROOT

STATX_ATTR_MOUNT_ROOT and STATX_ATTR_DAX got merged with the same value,
so one of them needs fixing.  Move STATX_ATTR_DAX.

While we're in here, clarify the value-matching scheme for some of the
attributes, and explain why the value for DAX does not match.

Fixes: 80340fe3605c ("statx: add mount_root")
Fixes: 712b2698e4c0 ("fs/stat: Define DAX statx attribute")
Link: https://lore.kernel.org/linux-fsdevel/7027520f-7c79-087e-1d00-743bdefa1a1e@redhat.com/
Link: https://lore.kernel.org/lkml/20201202214629.1563760-1-ira.weiny@intel.com/
Reported-by: David Howells <dhowells@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Cc: <stable@vger.kernel.org> # 5.8
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agopwm: sl28cpld: fix getting driver data in pwm callbacks
Uwe Kleine-König [Thu, 3 Dec 2020 08:41:42 +0000 (09:41 +0100)]
pwm: sl28cpld: fix getting driver data in pwm callbacks

Currently .get_state() and .apply() use dev_get_drvdata() on the struct
device related to the pwm chip.  This only works after .probe() called
platform_set_drvdata() which in this driver happens only after
pwmchip_add() and so comes possibly too late.

Instead of setting the driver data earlier use the traditional
container_of approach as this way the driver data is conceptually and
computational nearer.

Fixes: 9db33d221efc ("pwm: Add support for sl28cpld PWM controller")
Tested-by: Michael Walle <michael@walle.cc>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agolib/syscall: fix syscall registers retrieval on 32-bit platforms
Willy Tarreau [Mon, 30 Nov 2020 07:36:48 +0000 (08:36 +0100)]
lib/syscall: fix syscall registers retrieval on 32-bit platforms

Lilith >_> and Claudio Bozzato of Cisco Talos security team reported
that collect_syscall() improperly casts the syscall registers to 64-bit
values leaking the uninitialized last 24 bytes on 32-bit platforms, that
are visible in /proc/self/syscall.

The cause is that info->data.args are u64 while syscall_get_arguments()
uses longs, as hinted by the bogus pointer cast in the function.

Let's just proceed like the other call places, by retrieving the
registers into an array of longs before assigning them to the caller's
array.  This was successfully tested on x86_64, i386 and ppc32.

Reference: CVE-2020-28588, TALOS-2020-1211
Fixes: 631b7abacd02 ("ptrace: Remove maxargs from task_current_syscall()")
Cc: Greg KH <greg@kroah.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Michael Ellerman <mpe@ellerman.id.au> (ppc32)
Signed-off-by: Willy Tarreau <w@1wt.eu>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agox86/platform/uv: Fix UV4 hub revision adjustment
Mike Travis [Thu, 3 Dec 2020 15:22:52 +0000 (09:22 -0600)]
x86/platform/uv: Fix UV4 hub revision adjustment

Currently, UV4 is incorrectly identified as UV4A and UV4A as UV5. Hub
chip starts with revision 1, fix it.

 [ bp: Massage commit message. ]

Fixes: 647128f1536e ("x86/platform/uv: Update UV MMRs for UV5")
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Steve Wahl <steve.wahl@hpe.com>
Acked-by: Dimitri Sivanich <dimitri.sivanich@hpe.com>
Link: https://lkml.kernel.org/r/20201203152252.371199-1-mike.travis@hpe.com
4 years agortw88: debug: Fix uninitialized memory in debugfs code
Dan Carpenter [Thu, 3 Dec 2020 08:43:37 +0000 (11:43 +0300)]
rtw88: debug: Fix uninitialized memory in debugfs code

This code does not ensure that the whole buffer is initialized and none
of the callers check for errors so potentially none of the buffer is
initialized.  Add a memset to eliminate this bug.

Fixes: e3037485c68e ("rtw88: new Realtek 802.11ac driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/X8ilOfVz3pf0T5ec@mwanda
4 years agoUSB: serial: ch341: sort device-id entries
Johan Hovold [Thu, 3 Dec 2020 09:11:59 +0000 (10:11 +0100)]
USB: serial: ch341: sort device-id entries

Keep the device-id entries sorted to make it easier to add new ones in
the right spot.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
4 years agoUSB: serial: ch341: add new Product ID for CH341A
Jan-Niklas Burfeind [Thu, 3 Dec 2020 03:03:59 +0000 (04:03 +0100)]
USB: serial: ch341: add new Product ID for CH341A

Add PID for CH340 that's found on a ch341 based Programmer made by keeyees.
The specific device that contains the serial converter is described
here: http://www.keeyees.com/a/Products/ej/36.html

The driver works flawlessly as soon as the new PID (0x5512) is added to
it.

Signed-off-by: Jan-Niklas Burfeind <kernel@aiyionpri.me>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
4 years agoperf/x86/intel: Check PEBS status correctly
Stephane Eranian [Thu, 26 Nov 2020 11:09:22 +0000 (20:09 +0900)]
perf/x86/intel: Check PEBS status correctly

The kernel cannot disambiguate when 2+ PEBS counters overflow at the
same time. This is what the comment for this code suggests.  However,
I see the comparison is done with the unfiltered p->status which is a
copy of IA32_PERF_GLOBAL_STATUS at the time of the sample. This
register contains more than the PEBS counter overflow bits. It also
includes many other bits which could also be set.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201126110922.317681-2-namhyung@kernel.org
4 years agoperf/x86/intel: Fix a warning on x86_pmu_stop() with large PEBS
Namhyung Kim [Thu, 26 Nov 2020 11:09:21 +0000 (20:09 +0900)]
perf/x86/intel: Fix a warning on x86_pmu_stop() with large PEBS

The commit 3966c3feca3f ("x86/perf/amd: Remove need to check "running"
bit in NMI handler") introduced this.  It seems x86_pmu_stop can be
called recursively (like when it losts some samples) like below:

  x86_pmu_stop
    intel_pmu_disable_event  (x86_pmu_disable)
      intel_pmu_pebs_disable
        intel_pmu_drain_pebs_nhm  (x86_pmu_drain_pebs_buffer)
          x86_pmu_stop

While commit 35d1ce6bec13 ("perf/x86/intel/ds: Fix x86_pmu_stop
warning for large PEBS") fixed it for the normal cases, there's
another path to call x86_pmu_stop() recursively when a PEBS error was
detected (like two or more counters overflowed at the same time).

Like in the Kan's previous fix, we can skip the interrupt accounting
for large PEBS, so check the iregs which is set for PMI only.

Fixes: 3966c3feca3f ("x86/perf/amd: Remove need to check "running" bit in NMI handler")
Reported-by: John Sperbeck <jsperbeck@google.com>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201126110922.317681-1-namhyung@kernel.org
4 years agointel_idle: Build fix
Peter Zijlstra [Mon, 30 Nov 2020 11:54:34 +0000 (12:54 +0100)]
intel_idle: Build fix

Because CONFIG_ soup.

Fixes: 6e1d2bc675bd ("intel_idle: Fix intel_idle() vs tracing")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201130115402.GO3040@hirez.programming.kicks-ass.net
4 years agodrm/amdgpu/vcn3.0: remove old DPG workaround
Boyuan Zhang [Tue, 19 May 2020 15:38:44 +0000 (11:38 -0400)]
drm/amdgpu/vcn3.0: remove old DPG workaround

Port from VCN2.5
SCRATCH2 is used to keep decode wptr as a workaround
which fix a hardware DPG decode wptr update bug for
vcn2.5 beforehand.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: James Zhu <James.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 5.9.x
4 years agodrm/amdgpu/vcn3.0: stall DPG when WPTR/RPTR reset
Boyuan Zhang [Sun, 10 May 2020 19:47:03 +0000 (15:47 -0400)]
drm/amdgpu/vcn3.0: stall DPG when WPTR/RPTR reset

Port from VCN2.5
Add vcn dpg harware synchronization to fix race condition
issue between vcn driver and hardware.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: James Zhu <James.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 5.9.x