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2020-05-20dt-bindings: arm: amlogic: add support for the Beelink GT-KingChristian Hewitt1-0/+1
The Shenzen AZW (Beelink) GT-King is based on the Amlogic W400 reference board with an S922X chip. Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200520014329.12469-3-christianshewitt@gmail.com
2020-05-20arm64: dts: meson: convert ugoos-am6 to common w400 dtsiChristian Hewitt2-374/+424
Convert the Ugoos AM6 dts into meson-g12b-w400.dtsi, and then create a new AM6 dts that references it. This is in preparation for several new G12B devices that will share the common w400 dtsi. Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200520014329.12469-2-christianshewitt@gmail.com
2020-05-19arm64: dts: meson: add ethernet interrupt to wetek dtsiChristian Hewitt1-0/+4
Add Ethernet interrupt details to the WeTek Hub/Play2 dtsi to resolve an issue with Ethernet probing in mainline u-boot. Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200518025451.16401-1-christianshewitt@gmail.com
2020-05-19arm64: dts: meson: add support for the Smartlabs SML-5442TWChristian Hewitt2-0/+81
The Smartlabs SML-5442TW is based on the Amlogic P231 reference design but with the following differences: - The Yellow and Blue LEDs are available but disabled - The Red and Green LEDs are used to signal off/on status - uart_AO can be accessed after opening the case; soldered pins exist - QCA9377 instead of the usual Ampak/Broadcom module Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200510124129.31575-4-christianshewitt@gmail.com
2020-05-19dt-bindings: arm: amlogic: add support for the Smartlabs SML-5442TWChristian Hewitt1-0/+1
The SML-5442TW is an STB for O2 Czech IPTV/VOD and DVB-T/T2 based on the Amlogic P231 reference design using the S905D chipset. Specs: 2GB DDR3 RAM 8GB eMMC storage 10/100 Base-T Ethernet 802.11 a/b/g/n/ac + BT 4.1 HS sdio wireless module (QCA9377) 2x single colour and 1x dual colour LEDs on the front panel 1x reset button on the front panel HDMI 2.0 (4k@60p) video Composite video + 2-channel audio output on 3.5mm jack S/PDIF audio output Single DVB-T/T2 tuner (AVL6762/MxL608) 2x USB 2.0 ports 1x micro SD card slot UART pins (internal) Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200510124129.31575-3-christianshewitt@gmail.com
2020-05-19dt-bindings: add vendor prefix for Smartlabs LLCChristian Hewitt1-0/+2
Smartlabs LLC are a professional integrator of Interactive TV solutions and IPTV/VOD devices [1]. [1] https://www.smartlabs.tv/en/about/ Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200510124129.31575-2-christianshewitt@gmail.com
2020-05-19arm64: dts: meson: g12: add internal DAC glueJerome Brunet1-0/+9
add the internal DAC glue support on the g12 and sm1 family This glue connects the different TDM interfaces of the SoC to the internal audio DAC codec. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200506221656.477379-8-jbrunet@baylibre.com
2020-05-19arm64: dts: meson: g12: add internal DACJerome Brunet1-0/+11
add internal audio DAC support on the g12 and sm1 SoC family Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200506221656.477379-7-jbrunet@baylibre.com
2020-05-19arm64: dts: meson: libretech-pc: add internal DAC supportJerome Brunet1-0/+31
Add the internal DAC support on the libretech CC. The output of this DAC is provided on the 9J4 connector. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200506221656.477379-6-jbrunet@baylibre.com
2020-05-19arm64: dts: meson: libretech-ac: add internal DAC supportJerome Brunet1-0/+30
Add the internal DAC support on the libretech CC. The output of this DAC is provided on the 9J5 connector. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200506221656.477379-5-jbrunet@baylibre.com
2020-05-19arm64: dts: meson: libretech-cc: add internal DAC supportJerome Brunet1-0/+30
Add the internal DAC support on the libretech CC. The output of this DAC is provided on the 3.5mm jack connector. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200506221656.477379-4-jbrunet@baylibre.com
2020-05-19arm64: dts: meson: p230-q200: add internal DAC supportJerome Brunet1-0/+32
Add the necessary bits to support the internal audio DAC the p230/q200 reference design derivated boards. The output of this DAC is provided on the 3.5mm jack connector Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200506221656.477379-3-jbrunet@baylibre.com
2020-05-19arm64: dts: meson: gxl: add acodec supportJerome Brunet1-0/+11
Add the internal audio DAC to the gxl SoC DT Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200506221656.477379-2-jbrunet@baylibre.com
2020-05-19arm64: dts: meson-sm1: add support for Hardkernel ODROID-C4Dongjin Kim2-0/+403
Add the board support for the Hardkernel Odroid-C4 single board computer. The Odroid-C4 is the Odroid-C2 successor with same form factor, but using a modern Amlogic S905X3 (SM1) SoC and 4x USB3 ports. Signed-off-by: Dongjin Kim <tobetter@gmail.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200506080702.6645-3-narmstrong@baylibre.com
2020-05-19dt-bindings: arm: amlogic: add odroid-c4 bindingsNeil Armstrong1-0/+1
Add the board bindings for the Hardkernel Odroid-C4 single board computer. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200506080702.6645-2-narmstrong@baylibre.com
2020-05-19arm64: dts: meson-sm1: add cpu thermal nodesNeil Armstrong1-0/+24
Add thermal nodes for the Amlogic SM1 SoCs based on the G12A and G12B thermal nodes. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200512093916.19676-3-narmstrong@baylibre.com
2020-05-19arm64: dts: meson-g12b: move G12B thermal nodes to meson-g12b.dtsiNeil Armstrong2-23/+22
The G12B thermal nodes should be in the meson-g12b.dtsi file. Fixes: 195f140318a9 ("arm64: dts: meson: g12b: add cooling properties") Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200512093916.19676-2-narmstrong@baylibre.com
2020-05-19arm64: dts: meson: libretech-pc: add initial audio playback supportJerome Brunet1-0/+40
Add initial audio support limited to HDMI i2s. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Christian Hewitt <christianshewitt@gmail.com> Link: https://lore.kernel.org/r/20200421163935.775935-7-jbrunet@baylibre.com
2020-05-19arm64: dts: meson: libretech-ac: add initial audio playback supportJerome Brunet1-0/+40
Add initial audio support limited to HDMI i2s. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Christian Hewitt <christianshewitt@gmail.com> Link: https://lore.kernel.org/r/20200421163935.775935-6-jbrunet@baylibre.com
2020-05-19arm64: dts: meson: libretech-cc: add initial audio playback supportJerome Brunet1-0/+40
Add initial audio support limited to HDMI i2s. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Christian Hewitt <christianshewitt@gmail.com> Link: https://lore.kernel.org/r/20200421163935.775935-5-jbrunet@baylibre.com
2020-05-19arm64: dts: meson: p230-q200: add initial audio playback supportJerome Brunet1-0/+63
Add basic audio support on the p230/q200 reference design. This initial support is limited to HDMI i2s and SPDIF (LPCM). Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Christian Hewitt <christianshewitt@gmail.com> Link: https://lore.kernel.org/r/20200421163935.775935-4-jbrunet@baylibre.com
2020-05-19arm64: dts: meson-gx: add aiu supportJerome Brunet3-0/+59
Add the AIU audio device to the Amlogic GX SoC family DT. ATM, this device provides the i2s and spdif output stages and also the hdmi and internal codec glues. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Christian Hewitt <christianshewitt@gmail.com> Link: https://lore.kernel.org/r/20200421163935.775935-3-jbrunet@baylibre.com
2020-05-06dt-bindings: reset: meson: add gxl internal dac resetJerome Brunet1-1/+1
Add the reset line of the internal DAC found on the amlogic gxl SoC family Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2020-04-29arm64: dts: meson: kvim3: move hdmi to tdm aJerome Brunet1-9/+9
The tdmout b is physically routed to the 40 pin header and the tdmout c is routed to the m2 connector. It makes these interfaces poor candidates to handle the HDMI 8ch i2s link (2ch i2s * 4 lanes) as it would force the same link format on the related connectors. Instead use the TDM A interface. This one is not routed to the outside world on the vim3, so it can only be used for HDMI. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200421141814.639480-1-jbrunet@baylibre.com
2020-04-29arm64: dts: meson: S922X: extend cpu opp-pointsTim Lewis1-0/+15
Add extra cpu pop points to allow mild overclock on S922X. The opp points are found in Hardkernel N2 sources [1] and testing shows no obvious issues on other S922X devices. Thermal throttling should keep things in-check if needed. [1] https://github.com/hardkernel/linux/commit/f86cd9487c7483b2a05f448b9ebacf6bd5a2ad2f Signed-off-by: Tim Lewis <elatllat@gmail.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Tested-by: Christian Hewitt <christianshewitt@gmail.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://lore.kernel.org/r/20200426162119.GA23268@imac
2020-04-29arm64: dts: meson: fix leds subnodes nameNeil Armstrong11-16/+16
Fix the leds subnode names to match (^led-[0-9a-f]$|led) It fixes: meson-g12b-a311d-khadas-vim3.dt.yaml: leds: 'red', 'white' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-g12b-s922x-khadas-vim3.dt.yaml: leds: 'red', 'white' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-g12b-odroid-n2.dt.yaml: leds: 'blue' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxbb-nanopi-k2.dt.yaml: leds: 'stat' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxbb-nexbox-a95x.dt.yaml: leds: 'blue' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxbb-odroidc2.dt.yaml: leds: 'blue' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxbb-vega-s95-pro.dt.yaml: leds: 'blue' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxbb-vega-s95-meta.dt.yaml: leds: 'blue' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxbb-vega-s95-telos.dt.yaml: leds: 'blue' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxbb-wetek-hub.dt.yaml: leds: 'system' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxbb-wetek-play2.dt.yaml: leds: 'ethernet', 'system', 'wifi' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxl-s905x-libretech-cc.dt.yaml: leds: 'blue', 'system' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxl-s905d-libretech-pc.dt.yaml: leds: 'blue', 'green' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxm-rbox-pro.dt.yaml: leds: 'blue', 'red' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-gxm-s912-libretech-pc.dt.yaml: leds: 'blue', 'green' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-sm1-sei610.dt.yaml: leds: 'bluetooth' does not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' meson-sm1-khadas-vim3l.dt.yaml: leds: 'red', 'white' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200326165958.19274-6-narmstrong@baylibre.com
2020-04-29arm64: dts: meson-gxbb-kii-pro: fix board compatibleNeil Armstrong1-1/+1
Remove the uneeded "amlogic,p201", "amlogic,s905" in the board compatible list. It fixes: meson-gxbb-kii-pro.dt.yaml: /: compatible: ['videostrong,kii-pro', 'amlogic,p201', 'amlogic,s905', 'amlogic,meson-gxbb'] is not valid under any of the given schemas Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200326165958.19274-5-narmstrong@baylibre.com
2020-04-29arm64: dts: meson-g12b-ugoos-am6: fix board compatibleNeil Armstrong1-1/+1
Add missing amlogic,s922x in the board compatible list. It fixes: meson-g12b-ugoos-am6.dt.yaml: /: compatible: ['ugoos,am6', 'amlogic,g12b'] is not valid under any of the given schemas Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200326165958.19274-4-narmstrong@baylibre.com
2020-04-29arm64: dts: meson: fixup SCP sram nodesNeil Armstrong2-8/+8
The GX and AXG SCP sram nodes were using invalid compatible and node names for the sram entries. Fixup the sram entries node names, and use proper compatible for them. It notably fixes: sram@c8000000: 'scp-shmem@0', 'scp-shmem@200' do not match any of the regexes: '^([a-z]*-)?sram(-section)?@[a-f0-9]+$', 'pinctrl-[0-9]+' Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200326165958.19274-3-narmstrong@baylibre.com
2020-04-29arm64: dts: amlogic: use the new USB control driver for GXL and GXMMartin Blumenstingl16-31/+68
Add the correcly architectured USB Glue node and adapt all the Amlogic GXL and GXM board to the new organization. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20200326134507.4808-11-narmstrong@baylibre.com
2020-04-12Linux 5.7-rc1Linus Torvalds1-2/+2
2020-04-12MAINTAINERS: sort field names for all entriesLinus Torvalds1-1974/+1974
This sorts the actual field names too, potentially causing even more chaos and confusion at merge time if you have edited the MAINTAINERS file. But the end result is a more consistent layout, and hopefully it's a one-time pain minimized by doing this just before the -rc1 release. This was entirely scripted: ./scripts/parse-maintainers.pl --input=MAINTAINERS --output=MAINTAINERS --order Requested-by: Joe Perches <joe@perches.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-12MAINTAINERS: sort entries by entry nameLinus Torvalds1-820/+820
They are all supposed to be sorted, but people who add new entries don't always know the alphabet. Plus sometimes the entry names get edited, and people don't then re-order the entry. Let's see how painful this will be for merging purposes (the MAINTAINERS file is often edited in various different trees), but Joe claims there's relatively few patches in -next that touch this, and doing it just before -rc1 is likely the best time. Fingers crossed. This was scripted with /scripts/parse-maintainers.pl --input=MAINTAINERS --output=MAINTAINERS but then I also ended up manually upper-casing a few entry names that stood out when looking at the end result. Requested-by: Joe Perches <joe@perches.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-11mailmap: Add Sedat Dilek (replacement for expired email address)Sedat Dilek1-0/+1
I do not longer work for credativ Germany. Please, use my private email address instead. This is for the case when people want to CC me on patches sent from my old business email address. Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-11pNFS: Fix RCU lock leakageTrond Myklebust1-0/+1
Another brown paper bag moment. pnfs_alloc_ds_commits_list() is leaking the RCU lock. Fixes: a9901899b649 ("pNFS: Add infrastructure for cleaning up per-layout commit structures") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2020-04-11KVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guestXiaoyao Li1-3/+34
Two types of #AC can be generated in Intel CPUs: 1. legacy alignment check #AC 2. split lock #AC Reflect #AC back into the guest if the guest has legacy alignment checks enabled or if split lock detection is disabled. If the #AC is not a legacy one and split lock detection is enabled, then invoke handle_guest_split_lock() which will either warn and disable split lock detection for this task or force SIGBUS on it. [ tglx: Switch it to handle_guest_split_lock() and rename the misnamed helper function. ] Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Link: https://lkml.kernel.org/r/20200410115517.176308876@linutronix.de
2020-04-11KVM: x86: Emulate split-lock access as a write in emulatorXiaoyao Li1-1/+11
Emulate split-lock accesses as writes if split lock detection is on to avoid #AC during emulation, which will result in a panic(). This should never occur for a well-behaved guest, but a malicious guest can manipulate the TLB to trigger emulation of a locked instruction[1]. More discussion can be found at [2][3]. [1] https://lkml.kernel.org/r/8c5b11c9-58df-38e7-a514-dc12d687b198@redhat.com [2] https://lkml.kernel.org/r/20200131200134.GD18946@linux.intel.com [3] https://lkml.kernel.org/r/20200227001117.GX9940@linux.intel.com Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Link: https://lkml.kernel.org/r/20200410115517.084300242@linutronix.de
2020-04-11x86/split_lock: Provide handle_guest_split_lock()Thomas Gleixner2-5/+34
Without at least minimal handling for split lock detection induced #AC, VMX will just run into the same problem as the VMWare hypervisor, which was reported by Kenneth. It will inject the #AC blindly into the guest whether the guest is prepared or not. Provide a function for guest mode which acts depending on the host SLD mode. If mode == sld_warn, treat it like user space, i.e. emit a warning, disable SLD and mark the task accordingly. Otherwise force SIGBUS. [ bp: Add a !CPU_SUP_INTEL stub for handle_guest_split_lock(). ] Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Link: https://lkml.kernel.org/r/20200410115516.978037132@linutronix.de Link: https://lkml.kernel.org/r/20200402123258.895628824@linutronix.de
2020-04-11kbuild: fix comment about missing include guard detectionMasahiro Yamada1-1/+1
The keyword here is 'twice' to explain the trick. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-04-10ipc/util.c: sysvipc_find_ipc() should increase position indexVasily Averin1-1/+1
If seq_file .next function does not change position index, read after some lseek can generate unexpected output. https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Waiman Long <longman@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Ingo Molnar <mingo@redhat.com> Cc: NeilBrown <neilb@suse.com> Cc: Peter Oberparleiter <oberpar@linux.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/b7a20945-e315-8bb0-21e6-3875c14a8494@virtuozzo.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10kernel/gcov/fs.c: gcov_seq_next() should increase position indexVasily Averin1-1/+1
If seq_file .next function does not change position index, read after some lseek can generate unexpected output. https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ingo Molnar <mingo@redhat.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: NeilBrown <neilb@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Waiman Long <longman@redhat.com> Link: http://lkml.kernel.org/r/f65c6ee7-bd00-f910-2f8a-37cc67e4ff88@virtuozzo.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10fs/seq_file.c: seq_read(): add info message about buggy .next functionsVasily Averin1-2/+5
Patch series "seq_file .next functions should increase position index". In Aug 2018 NeilBrown noticed commit 1f4aace60b0e ("fs/seq_file.c: simplify seq_file iteration code and interface") "Some ->next functions do not increment *pos when they return NULL... Note that such ->next functions are buggy and should be fixed. A simple demonstration is dd if=/proc/swaps bs=1000 skip=1 Choose any block size larger than the size of /proc/swaps. This will always show the whole last line of /proc/swaps" Described problem is still actual. If you make lseek into middle of last output line following read will output end of last line and whole last line once again. $ dd if=/proc/swaps bs=1 # usual output Filename Type Size Used Priority /dev/dm-0 partition 4194812 97536 -2 104+0 records in 104+0 records out 104 bytes copied $ dd if=/proc/swaps bs=40 skip=1 # last line was generated twice dd: /proc/swaps: cannot skip to specified offset v/dm-0 partition 4194812 97536 -2 /dev/dm-0 partition 4194812 97536 -2 3+1 records in 3+1 records out 131 bytes copied There are lot of other affected files, I've found 30+ including /proc/net/ip_tables_matches and /proc/sysvipc/* I've sent patches into maillists of affected subsystems already, this patch-set fixes the problem in files related to pstore, tracing, gcov, sysvipc and other subsystems processed via linux-kernel@ mailing list directly https://bugzilla.kernel.org/show_bug.cgi?id=206283 This patch (of 4): Add debug code to seq_read() to detect missed or out-of-tree incorrect .next seq_file functions. [akpm@linux-foundation.org: s/pr_info/pr_info_ratelimited/, per Qian Cai] https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: NeilBrown <neilb@suse.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ingo Molnar <mingo@redhat.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Peter Oberparleiter <oberpar@linux.ibm.com> Cc: Waiman Long <longman@redhat.com> Link: http://lkml.kernel.org/r/244674e5-760c-86bd-d08a-047042881748@virtuozzo.com Link: http://lkml.kernel.org/r/7c24087c-e280-e580-5b0c-0cdaeb14cd18@virtuozzo.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warningskbuild test robot1-1/+0
Remove dev_err() messages after platform_get_irq*() failures. platform_get_irq() already prints an error. Generated by: scripts/coccinelle/api/platform_get_irq.cocci Fixes: 6c41ac96ad92 ("dmaengine: tegra-apb: Support COMPILE_TEST") Signed-off-by: kbuild test robot <lkp@intel.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Cc: Laxman Dewangan <ldewangan@nvidia.com> Cc: Vinod Koul <vinod.koul@linux.intel.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Jon Hunter <jonathanh@nvidia.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.21.2002271133450.2973@hadrien Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10change email address for Pali RohárPali Rohár24-41/+42
For security reasons I stopped using gmail account and kernel address is now up-to-date alias to my personal address. People periodically send me emails to address which they found in source code of drivers, so this change reflects state where people can contact me. [ Added .mailmap entry as per Joe Perches - Linus ] Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Joe Perches <joe@perches.com> Link: http://lkml.kernel.org/r/20200307104237.8199-1-pali@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10selftests: kmod: test disabling module autoloadingEric Biggers1-0/+30
Test that request_module() fails with -ENOENT when /proc/sys/kernel/modprobe contains (a) a nonexistent path, and (b) an empty path. Case (b) is a regression test for the patch "kmod: make request_module() return an error when autoloading is disabled". Tested with 'kmod.sh -t 0010 && kmod.sh -t 0011', and also simply with 'kmod.sh' to run all kmod tests. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Jessica Yu <jeyu@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: NeilBrown <neilb@suse.com> Link: http://lkml.kernel.org/r/20200312202552.241885-5-ebiggers@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10selftests: kmod: fix handling test numbers above 9Eric Biggers1-4/+9
get_test_count() and get_test_enabled() were broken for test numbers above 9 due to awk interpreting a field specification like '$0010' as octal rather than decimal. Fix it by stripping the leading zeroes. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Jessica Yu <jeyu@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: NeilBrown <neilb@suse.com> Link: http://lkml.kernel.org/r/20200318230515.171692-5-ebiggers@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10docs: admin-guide: document the kernel.modprobe sysctlEric Biggers1-0/+21
Document the kernel.modprobe sysctl in the same place that all the other kernel.* sysctls are documented. Make sure to mention how to use this sysctl to completely disable module autoloading, and how this sysctl relates to CONFIG_STATIC_USERMODEHELPER. [ebiggers@google.com: v5] Link: http://lkml.kernel.org/r/20200318230515.171692-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Jessica Yu <jeyu@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: NeilBrown <neilb@suse.com> Link: http://lkml.kernel.org/r/20200312202552.241885-4-ebiggers@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()Eric Biggers1-1/+3
After request_module(), nothing is stopping the module from being unloaded until someone takes a reference to it via try_get_module(). The WARN_ONCE() in get_fs_type() is thus user-reachable, via userspace running 'rmmod' concurrently. Since WARN_ONCE() is for kernel bugs only, not for user-reachable situations, downgrade this warning to pr_warn_once(). Keep it printed once only, since the intent of this warning is to detect a bug in modprobe at boot time. Printing the warning more than once wouldn't really provide any useful extra information. Fixes: 41124db869b7 ("fs: warn in case userspace lied about modprobe return") Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Jessica Yu <jeyu@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Jessica Yu <jeyu@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: NeilBrown <neilb@suse.com> Cc: <stable@vger.kernel.org> [4.13+] Link: http://lkml.kernel.org/r/20200312202552.241885-3-ebiggers@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10kmod: make request_module() return an error when autoloading is disabledEric Biggers1-2/+2
Patch series "module autoloading fixes and cleanups", v5. This series fixes a bug where request_module() was reporting success to kernel code when module autoloading had been completely disabled via 'echo > /proc/sys/kernel/modprobe'. It also addresses the issues raised on the original thread (https://lkml.kernel.org/lkml/20200310223731.126894-1-ebiggers@kernel.org/T/#u) bydocumenting the modprobe sysctl, adding a self-test for the empty path case, and downgrading a user-reachable WARN_ONCE(). This patch (of 4): It's long been possible to disable kernel module autoloading completely (while still allowing manual module insertion) by setting /proc/sys/kernel/modprobe to the empty string. This can be preferable to setting it to a nonexistent file since it avoids the overhead of an attempted execve(), avoids potential deadlocks, and avoids the call to security_kernel_module_request() and thus on SELinux-based systems eliminates the need to write SELinux rules to dontaudit module_request. However, when module autoloading is disabled in this way, request_module() returns 0. This is broken because callers expect 0 to mean that the module was successfully loaded. Apparently this was never noticed because this method of disabling module autoloading isn't used much, and also most callers don't use the return value of request_module() since it's always necessary to check whether the module registered its functionality or not anyway. But improperly returning 0 can indeed confuse a few callers, for example get_fs_type() in fs/filesystems.c where it causes a WARNING to be hit: if (!fs && (request_module("fs-%.*s", len, name) == 0)) { fs = __get_fs_type(name, len); WARN_ONCE(!fs, "request_module fs-%.*s succeeded, but still no fs?\n", len, name); } This is easily reproduced with: echo > /proc/sys/kernel/modprobe mount -t NONEXISTENT none / It causes: request_module fs-NONEXISTENT succeeded, but still no fs? WARNING: CPU: 1 PID: 1106 at fs/filesystems.c:275 get_fs_type+0xd6/0xf0 [...] This should actually use pr_warn_once() rather than WARN_ONCE(), since it's also user-reachable if userspace immediately unloads the module. Regardless, request_module() should correctly return an error when it fails. So let's make it return -ENOENT, which matches the error when the modprobe binary doesn't exist. I've also sent patches to document and test this case. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Jessica Yu <jeyu@kernel.org> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Ben Hutchings <benh@debian.org> Cc: Josh Triplett <josh@joshtriplett.org> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/20200310223731.126894-1-ebiggers@kernel.org Link: http://lkml.kernel.org/r/20200312202552.241885-1-ebiggers@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10mm/memremap: set caching mode for PCI P2PDMA memory to WCLogan Gunthorpe1-0/+3
PCI BAR IO memory should never be mapped as WB, however prior to this the PAT bits were set WB and it was typically overridden by MTRR registers set by the firmware. Set PCI P2PDMA memory to be UC as this is what it currently, typically, ends up being mapped as on x86 after the MTRR registers override the cache setting. Future use-cases may need to generalize this by adding flags to select the caching type, as some P2PDMA cases may not want UC. However, those use-cases are not upstream yet and this can be changed when they arrive. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Andy Lutomirski <luto@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Eric Badger <ebadger@gigaio.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@suse.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Link: http://lkml.kernel.org/r/20200306170846.9333-8-logang@deltatee.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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