Pull security subsystem integrity updates from James Morris:
"There is a mixture of bug fixes, code cleanup, preparatory code for
new functionality and new functionality.
Commit 26ddabfe96 ("evm: enable EVM when X509 certificate is
loaded") enabled EVM without loading a symmetric key, but was limited
to defining the x509 certificate pathname at build. Included in this
set of patches is the ability of enabling EVM, without loading the EVM
symmetric key, from userspace. New is the ability to prevent the
loading of an EVM symmetric key."
* 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
ima: Remove redundant conditional operator
ima: Fix bool initialization/comparison
ima: check signature enforcement against cmdline param instead of CONFIG
module: export module signature enforcement status
ima: fix hash algorithm initialization
EVM: Only complain about a missing HMAC key once
EVM: Allow userspace to signal an RSA key has been loaded
EVM: Include security.apparmor in EVM measurements
ima: call ima_file_free() prior to calling fasync
integrity: use kernel_read_file_from_path() to read x509 certs
ima: always measure and audit files in policy
ima: don't remove the securityfs policy file
vfs: fix mounting a filesystem with i_version
Pull general security subsystem updates from James Morris:
"TPM (from Jarkko):
- essential clean up for tpm_crb so that ARM64 and x86 versions do
not distract each other as much as before
- /dev/tpm0 rejects now too short writes (shorter buffer than
specified in the command header
- use DMA-safe buffer in tpm_tis_spi
- otherwise mostly minor fixes.
Smack:
- base support for overlafs
Capabilities:
- BPRM_FCAPS fixes, from Richard Guy Briggs:
The audit subsystem is adding a BPRM_FCAPS record when auditing
setuid application execution (SYSCALL execve). This is not expected
as it was supposed to be limited to when the file system actually
had capabilities in an extended attribute. It lists all
capabilities making the event really ugly to parse what is
happening. The PATH record correctly records the setuid bit and
owner. Suppress the BPRM_FCAPS record on set*id.
TOMOYO:
- Y2038 timestamping fixes"
* 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (28 commits)
MAINTAINERS: update the IMA, EVM, trusted-keys, encrypted-keys entries
Smack: Base support for overlayfs
MAINTAINERS: remove David Safford as maintainer for encrypted+trusted keys
tomoyo: fix timestamping for y2038
capabilities: audit log other surprising conditions
capabilities: fix logic for effective root or real root
capabilities: invert logic for clarity
capabilities: remove a layer of conditional logic
capabilities: move audit log decision to function
capabilities: use intuitive names for id changes
capabilities: use root_priveleged inline to clarify logic
capabilities: rename has_cap to has_fcap
capabilities: intuitive names for cap gain status
capabilities: factor out cap_bprm_set_creds privileged root
tpm, tpm_tis: use ARRAY_SIZE() to define TPM_HID_USR_IDX
tpm: fix duplicate inline declaration specifier
tpm: fix type of a local variables in tpm_tis_spi.c
tpm: fix type of a local variable in tpm2_map_command()
tpm: fix type of a local variable in tpm2_get_cc_attrs_tbl()
tpm-dev-common: Reject too short writes
...
- Introduce host claiming by context to support blkmq
- Preparations for enabling CQE (eMMC CMDQ) requests
- Re-factorizations to prepare for blkmq support
- Re-factorizations to prepare for CQE support
- Fix signal voltage switch for SD cards without power cycle
- Convert RPMB to a character device
- Export eMMC revision via sysfs
- Support eMMC DT binding for fixed driver type
- Document mmc_regulator_get_supply() API
MMC host:
- omap_hsmmc: Updated regulator management for PBIAS
- sdhci-omap: Add new OMAP SDHCI driver
- meson-mx-sdio: New driver for the Amlogic Meson8 and Meson8b SoCs
- sdhci-pci: Add support for Intel CDF
- sdhci-acpi: Fix voltage switch for some Intel host controllers
- sdhci-msm: Enable delay circuit calibration clocks
- sdhci-msm: Manage power IRQ properly
- mediatek: Add support of mt2701/mt2712
- mediatek: Updates management of clocks and tunings
- mediatek: Upgrade eMMC HS400 support
- rtsx_pci: Update tuning for gen3 PCI-Express
- renesas_sdhi: Support R-Car Gen[123] fallback compatibility strings
- Catch all errors when getting regulators
- Various additional improvements and cleanups
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Merge tag 'mmc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Introduce host claiming by context to support blkmq
- Preparations for enabling CQE (eMMC CMDQ) requests
- Re-factorizations to prepare for blkmq support
- Re-factorizations to prepare for CQE support
- Fix signal voltage switch for SD cards without power cycle
- Convert RPMB to a character device
- Export eMMC revision via sysfs
- Support eMMC DT binding for fixed driver type
- Document mmc_regulator_get_supply() API
MMC host:
- omap_hsmmc: Updated regulator management for PBIAS
- sdhci-omap: Add new OMAP SDHCI driver
- meson-mx-sdio: New driver for the Amlogic Meson8 and Meson8b SoCs
- sdhci-pci: Add support for Intel CDF
- sdhci-acpi: Fix voltage switch for some Intel host controllers
- sdhci-msm: Enable delay circuit calibration clocks
- sdhci-msm: Manage power IRQ properly
- mediatek: Add support of mt2701/mt2712
- mediatek: Updates management of clocks and tunings
- mediatek: Upgrade eMMC HS400 support
- rtsx_pci: Update tuning for gen3 PCI-Express
- renesas_sdhi: Support R-Car Gen[123] fallback compatibility strings
- Catch all errors when getting regulators
- Various additional improvements and cleanups"
* tag 'mmc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (91 commits)
sdhci-fujitsu: add support for setting the CMD_DAT_DELAY attribute
dt-bindings: sdhci-fujitsu: document cmd-dat-delay property
mmc: tmio: Replace msleep() of 20ms or less with usleep_range()
mmc: dw_mmc: Convert timers to use timer_setup()
mmc: dw_mmc: Cleanup the DTO timer like the CTO one
mmc: vub300: Use common code in __download_offload_pseudocode()
mmc: tmio: Use common error handling code in tmio_mmc_host_probe()
mmc: Convert timers to use timer_setup()
mmc: sdhci-acpi: Fix voltage switch for some Intel host controllers
mmc: sdhci-acpi: Let devices define their own private data
mmc: mediatek: perfer to use rise edge latching for cmd line
mmc: mediatek: improve eMMC hs400 mode read performance
mmc: mediatek: add latch-ck support
mmc: mediatek: add support of source_cg clock
mmc: mediatek: add stop_clk fix and enhance_rx support
mmc: mediatek: add busy_check support
mmc: mediatek: add async fifo and data tune support
mmc: mediatek: add pad_tune0 support
mmc: mediatek: make hs400_tune_response only for mt8173
arm64: dts: mt8173: remove "mediatek, mt8135-mmc" from mmc nodes
...
As reported by kernelci and other build bots, we now get a link
failure without CONFIG_KALLSYMS:
module.c:(.text+0xf2c): undefined reference to `kallsyms_show_value'
This adds a dummy helper with the same name that can be used
for compilation. It's not entirely clear to me what this
should return for !CONFIG_KALLSYMS, I picked an unconditional
'false', which leads to the module address being unavailable
to user space.
Link: https://kernelci.org/build/mainline/branch/master/kernel/v4.14-5-g516fb7f2e73d/
Fixes: 516fb7f2e7 ("/proc/module: use the same logic as /proc/kallsyms for address exposure")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Building kallsyms fails without CONFIG_PRINTK due to a missing
declaration:
kernel/kallsyms.c: In function 'kallsyms_show_value':
kernel/kallsyms.c:670:10: error: 'kptr_restrict' undeclared (first use in this function); did you mean 'keyring_restrict'?
This moves the declaration outside of the #ifdef guard, the definition
is already available without CONFIG_PRINTK.
Fixes: c0f3ea1589 ("stop using '%pK' for /proc/kallsyms pointer values")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[ I clearly need to start doing "allnoconfig" builds too, or just have a
test branch for the 0day robot - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
After several quiet kernel releases we've got a couple of new features
in regmap, support for using hwspinlocks as the lock for the internal
data structures and a helper for polling on regmap_fields. The Kconfig
dependencies on hwspinlocks were annoyingly difficult to squash between
things behaving surprisingly and randconfig, I could've squashed those
commits down but might've have caused hassle with other trees trying to
use the new support.
- Support for using a hwspinlock to protect the regmap.
- An iopoll style helper for regmap_field.
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Merge tag 'regmap-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"After several quiet kernel releases we've got a couple of new features
in regmap, support for using hwspinlocks as the lock for the internal
data structures and a helper for polling on regmap_fields. The Kconfig
dependencies on hwspinlocks were annoyingly difficult to squash
between things behaving surprisingly and randconfig, I could've
squashed those commits down but might've have caused hassle with other
trees trying to use the new support.
- support for using a hwspinlock to protect the regmap
- an iopoll style helper for regmap_field"
* tag 'regmap-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: Fix unused warning
regmap: Try to work around Kconfig exploding on HWSPINLOCK
regmap: Clean up hwspinlock on regmap exit
regmap: Also protect hwspinlock in error handling path
regmap: Add a config option for hwspinlock
regmap: Add hardware spinlock support
regmap: avoid -Wint-in-bool-context warning
regmap: add iopoll-like polling macro for regmap_field
regmap: constify regmap_bus structures
regmap: Avoid namespace collision within macro & tidy up
This release is almost entirely driver changes, there's a couple of
fixes in the core but otherwise it's all drivers:
- Fix for mixed dynamic and static bus number assignment.
- Fixes for some leaks arising from confusing lifetime rules during
device unregistration and improved documentation to try to help avoid
this in the future.
- Fixes to make the native chip select support for i.MX usable.
- Slave mode support for i.MX.
- Support for Coldfire MCF5441x DSPI, Renesas R8A7443/5 and Spreadtrum
ADI.
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Merge tag 'spi-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"This release is almost entirely driver changes, there's a couple of
fixes in the core but otherwise it's all drivers:
- fix for mixed dynamic and static bus number assignment.
- fixes for some leaks arising from confusing lifetime rules during
device unregistration and improved documentation to try to help
avoid this in the future.
- fixes to make the native chip select support for i.MX usable.
- slave mode support for i.MX.
- support for Coldfire MCF5441x DSPI, Renesas R8A7443/5 and
Spreadtrum ADI"
* tag 'spi-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (31 commits)
spi: imx: Don't require platform data chipselect array
spi: imx: Fix failure path leak on GPIO request error
spi: imx: GPIO based chip selects should not be required
spi: sh-msiof: remove redundant pointer dev
spi: s3c64xx: remove redundant pointer sci
spi: spi-fsl-dspi: enabling Coldfire mcf5441x dspi
spi: fix IDR collision on systems with both fixed and dynamic SPI bus numbers
spi: orion: remove redundant assignment of status to zero
spi: sh-msiof: Fix DMA transfer size check
spi: imx: Fix failure path leak on GPIO request error
spi: spi-axi: fix potential use-after-free after deregistration
spi: document odd controller reference handling
spi: fix use-after-free at controller deregistration
spi: sprd: Fix the possible negative value of BIT()
spi: sprd-adi: fix platform_no_drv_owner.cocci warnings
spi: a3700: Change SPI mode before asserting chip-select
spi: tegra114: correct register name in definition
spi: spreadtrum adi: add hwspinlock dependency
spi: sh-msiof: Use of_device_get_match_data() helper
spi: rspi: Use of_device_get_match_data() helper
...
A very quiet release for regulator, there's some new device support in
existing drivers here and a few fixes but nothing in the core.
- New device support for Allwinner AXP813, Dialog DA223/4/5 and
Qualcomm PMI8994.
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Merge tag 'regulator-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"A very quiet release for regulator, there's some new device support in
existing drivers here and a few fixes but nothing in the core.
Summary:
- New device support for Allwinner AXP813, Dialog DA223/4/5 and
Qualcomm PMI8994"
* tag 'regulator-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: tps65218: remove unused tps_info structure
regulator: tps65218: Fix strobe assignment
regulator: qcom_spmi: Include offset when translating voltages
regulator: qcom_spmi: Add support for pmi8994
regulator: da9211: update for supporting da9223/4/5
ASoC: pfuze100: Remove leading zero from '@08' notation
regulator: axp20x: Simplify axp20x_is_polyphase_slave implementation
regulator: axp20x: Add support for AXP813 regulators
- Drivers for MAX31785 and MAX6621
- Support for AMD family 17h (Ryzen, Threadripper) temperature sensors
- Various driver cleanups and minor improvements
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Merge tag 'hwmon-for-linus-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
- drivers for MAX31785 and MAX6621
- support for AMD family 17h (Ryzen, Threadripper) temperature sensors
- various driver cleanups and minor improvements
* tag 'hwmon-for-linus-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (30 commits)
dt-bindings: pmbus: Add Maxim MAX31785 documentation
pmbus: Add driver for Maxim MAX31785 Intelligent Fan Controller
hwmon: (aspeed-pwm-tacho) Sort headers
hwmon: (xgene) Minor clean up of ifdef and acpi_match_table reference
hwmon: (max6621) Inverted if condition in max6621_read()
hwmon: (asc7621) remove redundant assignment to newval
hwmon: (xgene) Support hwmon v2
hwmon: (gpio-fan) Fix null pointer dereference at probe
hwmon: (gpio-fan) Convert to use GPIO descriptors
hwmon: (gpio-fan) Rename GPIO line state variables
hwmon: (gpio-fan) Get rid of the gpio alarm struct
hwmon: (gpio-fan) Get rid of platform data struct
hwmon: (gpio-fan) Mandate OF_GPIO and cut pdata path
hwmon: (gpio-fan) Send around device pointer
hwmon: (gpio-fan) Localize platform data
hwmon: (gpio-fan) Use local variable pointers
hwmon: (gpio-fan) Move DT bindings to the right place
Documentation: devicetree: add max6621 device
hwmon: (max6621) Add support for Maxim MAX6621 temperature sensor
hwmon: (w83793) make const array watchdog_minors static, reduces object code size
...
Worth noting are the changes to ghes_edac to use a whitelist of
known-good platforms on which GHES error reporting works relatively
reliably. By Toshi Kani and Borislav Petkov.
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Merge tag 'edac_for_4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Pull EDAC updates from Borislav Petkov:
"The usual pile of bugfixes, cleanups and minor driver enhancements.
Worth noting are the changes to ghes_edac to use a whitelist of
known-good platforms on which GHES error reporting works relatively
reliably. By Toshi Kani and Borislav Petkov"
* tag 'edac_for_4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
EDAC, sb_edac: Fix missing break in switch
MAINTAINERS: Split Cavium EDAC entry and add myself
EDAC, sb_edac: Fix missing DIMM sysfs entries with KNL SNC2/SNC4 mode
EDAC, skx_edac: Handle systems with segmented PCI busses
EDAC, thunderx: Remove suspend/resume support
EDAC, skx_edac: Fix detection of single-rank DIMMs
EDAC, sb_edac: Don't create a second memory controller if HA1 is not present
EDAC: Add owner check to the x86 platform drivers
EDAC: Add helper which returns the loaded platform driver
EDAC, ghes: Add platform check
EDAC, ghes: Model a single, logical memory controller
EDAC, ghes: Remove symbol exports
EDAC: Handle return value of kasprintf()
- The old driver statement has been added to the kernel docs.
- We have a couple of new helper scripts. find-unused-docs.sh from Sayli
Karnic will point out kerneldoc comments that are not actually used in
the documentation. Jani Nikula's documentation-file-ref-check finds
references to non-existing files.
- A new ftrace document from Steve Rostedt.
- Vinod Koul converted the dmaengine docs to RST
Beyond that, it's mostly simple fixes.
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Merge tag 'docs-4.15' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"A relatively calm cycle for the docs tree again.
- The old driver statement has been added to the kernel docs.
- We have a couple of new helper scripts. find-unused-docs.sh from
Sayli Karnic will point out kerneldoc comments that are not actually
used in the documentation. Jani Nikula's
documentation-file-ref-check finds references to non-existing files.
- A new ftrace document from Steve Rostedt.
- Vinod Koul converted the dmaengine docs to RST
Beyond that, it's mostly simple fixes.
This set reaches outside of Documentation/ a bit more than most. In
all cases, the changes are to comment docs, mostly from Randy, in
places where there didn't seem to be anybody better to take them"
* tag 'docs-4.15' of git://git.lwn.net/linux: (52 commits)
documentation: fb: update list of available compiled-in fonts
MAINTAINERS: update DMAengine documentation location
dmaengine: doc: ReSTize pxa_dma doc
dmaengine: doc: ReSTize dmatest doc
dmaengine: doc: ReSTize client API doc
dmaengine: doc: ReSTize provider doc
dmaengine: doc: Add ReST style dmaengine document
ftrace/docs: Add documentation on how to use ftrace from within the kernel
bug-hunting.rst: Fix an example and a typo in a Sphinx tag
scripts: Add a script to find unused documentation
samples: Convert timers to use timer_setup()
documentation: kernel-api: add more info on bitmap functions
Documentation: fix selftests related file refs
Documentation: fix ref to power basic-pm-debugging
Documentation: fix ref to trace stm content
Documentation: fix ref to coccinelle content
Documentation: fix ref to workqueue content
Documentation: fix ref to sphinx/kerneldoc.py
Documentation: fix locking rt-mutex doc refs
docs: dev-tools: correct Coccinelle version number
...
The (alleged) users of the module addresses are the same: kernel
profiling.
So just expose the same helper and format macros, and unify the logic.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This code goes back to the historical bitkeeper tree commit 3f7b0672086
("Module section offsets in /sys/module"), where Jonathan Corbet wanted
to show people how to debug loadable modules.
See
https://lwn.net/Articles/88052/
from June 2004.
To expose the required load address information, Jonathan added the
sections subdirectory for every module in /sys/modules, and made them
S_IRUGO - readable by everybody.
It was a more innocent time, plus those S_IRxxx macro names are a lot
more confusing than the octal numbers are, so maybe it wasn't even
intentional. But here we are, thirteen years later, and I'll just change
it to S_IRUSR instead.
Let's see if anybody even notices.
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge /proc/kallsyms pointer value restrictions.
Instead of using %pK, and making it about root access (at the wrong
time, no less), make the whole choice of whether to show the actual
pointer value be very explicit to the kallsyms code.
In particular, we can now default to not doing so, and yet avoid
annoying kernel profiling by actually looking at whether kernel
profiling is allowed or not (by default it is not).
This is all mostly preparation for the real "let's stop leaking kernel
addresses" work that Tobin Harding is working on.
Small steps.
* kallsyms-restrictions:
stop using '%pK' for /proc/kallsyms pointer values
Partially revert commit 2fa3656829 ("kbuild: soften MODULE_LICENSE
check") so that modpost detects modules that do not have a
MODULE_LICENSE.
Sam's commit also changed the fatal error to a warning, which I am
leaving as is.
This gives advance notice of when a module has no license and will taint
the kernel if the module is loaded.
This produces the following warnings on x86_64 allmodconfig:
MODPOST 6520 modules
WARNING: modpost: missing MODULE_LICENSE() in drivers/auxdisplay/img-ascii-lcd.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/gpio/gpio-ath79.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/gpio/gpio-iop.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/iio/accel/kxsd9-i2c.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/iio/adc/qcom-vadc-common.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/media/platform/mtk-vcodec/mtk-vcodec-common.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/media/platform/soc_camera/soc_scale_crop.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/mtd/nand/denali_pci.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/net/phy/cortina.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/pinctrl/pxa/pinctrl-pxa2xx.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/power/reset/zx-reboot.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/rpmsg/qcom_glink_native.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/staging/comedi/drivers/ni_atmio.o
WARNING: modpost: missing MODULE_LICENSE() in net/9p/9pnet_xen.o
WARNING: modpost: missing MODULE_LICENSE() in sound/soc/codecs/snd-soc-pcm512x-spi.o
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull x86 fixes from Thomas Gleixner:
"A set of small fixes:
- make KGDB work again which got broken by the conversion of WARN()
to #UD. The WARN fixup needs to run before the notifier callchain,
otherwise KGDB tries to handle it and crashes.
- disable KASAN in the ORC unwinder to prevent false positive KASAN
warnings
- prevent default mapping above 47bit when 5 level page tables are
enabled
- make the delay calibration optimization work correctly, which had
the conditionals the wrong way around and was operating on data
which was not yet updated.
- remove the bogus X86_TRAP_BP trap init from the default IDT init
table, which broke 32bit int3 handling by overwriting the correct
int3 setup.
- replace this_cpu* with boot_cpu_data access in the preemptible
oprofile init code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/debug: Handle warnings before the notifier chain, to fix KGDB crash
x86/mm: Fix ELF_ET_DYN_BASE for 5-level paging
x86/idt: Remove X86_TRAP_BP initialization in idt_setup_traps()
x86/oprofile/ppro: Do not use __this_cpu*() in preemptible context
x86/unwind: Disable KASAN checking in the ORC unwinder
x86/smpboot: Make optimization of delay calibration work correctly
Pull perf tool fixes from Thomas Gleixner:
"A small set of fixes for perf tool:
- synchronize the i915 drm header to avoid the 'out of date' warning
- make sure that perf trace cleans up its temporary files on exit
- unbreak the build with newer flex versions
- add missing braces in the eBPF parsing rules"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tooling/headers: Sync the tools/include/uapi/drm/i915_drm.h UAPI header
perf trace: Call machine__exit() at exit
perf tools: Fix eBPF event specification parsing
perf tools: Add "reject" option for parse-events.l
Pull networking fixes from David Miller:
1) Use after free in vlan, from Cong Wang.
2) Handle NAPI poll with a zero budget properly in mlx5 driver, from
Saeed Mahameed.
3) If DMA mapping fails in mlx5 driver, NULL out page, from Inbar
Karmy.
4) Handle overrun in RX FIFO of sun4i CAN driver, from Gerhard
Bertelsmann.
5) Missing return in mdb and vlan prepare phase of DSA layer, from
Vivien Didelot.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
vlan: fix a use-after-free in vlan_device_event()
net: dsa: return after vlan prepare phase
net: dsa: return after mdb prepare phase
can: ifi: Fix transmitter delay calculation
tcp: fix tcp_fastretrans_alert warning
tcp: gso: avoid refcount_t warning from tcp_gso_segment()
can: peak: Add support for new PCIe/M2 CAN FD interfaces
can: sun4i: handle overrun in RX FIFO
can: c_can: don't indicate triple sampling support for D_CAN
net/mlx5e: Increase Striding RQ minimum size limit to 4 multi-packet WQEs
net/mlx5e: Set page to null in case dma mapping fails
net/mlx5e: Fix napi poll with zero budget
net/mlx5: Cancel health poll before sending panic teardown command
net/mlx5: Loop over temp list to release delay events
rds: ib: Fix NULL pointer dereference in debug code
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Merge tag 'linux-can-fixes-for-4.14-20171110' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2017-11-10
this is a pull request for net/master.
The first patch by Richard Schütz for the c_can driver removes the false
indication to support triple sampling for d_can. Gerhard Bertelsmann's
patch for the sun4i driver improves the RX overrun handling. The patch
by Stephane Grosjean for the peak_canfd driver adds the PCI ids for
various new PCIe/M2 interfaces. Marek Vasut's patch for the ifi driver
fix transmitter delay calculation.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Saeed Mahameed says:
====================
Mellanox, mlx5 fixes 2017-11-08
The following series includes some fixes for mlx5 core and etherent
driver.
Sorry for the late submission but as you can see i have some very
critical fixes below that i would like them merged into this RC.
Please pull and let me know if there is any problem.
For -stable:
('net/mlx5e: Set page to null in case dma mapping fails') kernels >= 4.13
('net/mlx5: FPGA, return -EINVAL if size is zero') kernels >= 4.13
('net/mlx5: Cancel health poll before sending panic teardown command') kernels >= 4.13
V1->V2:
- Fix Reviewed-by tag of the 2nd patch.
- Drop the FPGA 0 size fix, it needs some more change log info.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
After refcnt reaches zero, vlan_vid_del() could free
dev->vlan_info via RCU:
RCU_INIT_POINTER(dev->vlan_info, NULL);
call_rcu(&vlan_info->rcu, vlan_info_rcu_free);
However, the pointer 'grp' still points to that memory
since it is set before vlan_vid_del():
vlan_info = rtnl_dereference(dev->vlan_info);
if (!vlan_info)
goto out;
grp = &vlan_info->grp;
Depends on when that RCU callback is scheduled, we could
trigger a use-after-free in vlan_group_for_each_dev()
right following this vlan_vid_del().
Fix it by moving vlan_vid_del() before setting grp. This
is also symmetric to the vlan_vid_add() we call in
vlan_device_event().
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Fixes: efc73f4bbc ("net: Fix memory leak - vlan_info struct")
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Girish Moodalbail <girish.moodalbail@oracle.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Girish Moodalbail <girish.moodalbail@oracle.com>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Last minute upstream update to one of the UAPI headers - sync it with tooling,
to address this warning:
Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The current code does not return after successfully preparing the VLAN
addition on every ports member of a it. Fix this.
Fixes: 1ca4aa9cd4 ("net: dsa: check VLAN capability of every switch")
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current code does not return after successfully preparing the MDB
addition on every ports member of a multicast group. Fix this.
Fixes: a1a6b7ea7f ("net: dsa: add cross-chip multicast support")
Reported-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'ceph-for-4.14-rc9' of git://github.com/ceph/ceph-client
Pull ceph gix from Ilya Dryomov:
"Memory allocation flags fix, marked for stable"
* tag 'ceph-for-4.14-rc9' of git://github.com/ceph/ceph-client:
rbd: use GFP_NOIO for parent stat and data requests
Pull input layer updates from Dmitry Torokhov:
- a new ACPI ID for Elan touchpad found in yet another Ideapad model
- Synaptics RMI4 will allow binding to controllers reporting SMB
version 3 (note that we are not adding any new ACPI IDs to the
Synaptics PS/2 drover so unless user explicitly enables intertouch
support there is no user-visible change)
- a fixup to TSC 2004/5 touchscreen driver to mark input devices as
"direct" to help userspace identify the type of device they are
dealing with
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: synaptics-rmi4 - RMI4 can also use SMBUS version 3
Input: tsc200x-core - set INPUT_PROP_DIRECT
Input: elan_i2c - add ELAN060C to the ACPI table
If the array is not present, assume all chip selects are native. This
is the standard behavior for SPI masters configured via the device
tree and the behavior of this driver as well when it is configured via
device tree.
This reduces platform data vs DT differences and allows most of the
platform data based boards to remove their chip select arrays.
CC: Shawn Guo <shawnguo@kernel.org>
CC: Sascha Hauer <kernel@pengutronix.de>
CC: Fabio Estevam <fabio.estevam@nxp.com>
CC: Mark Brown <broonie@kernel.org>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
If the code that requests any chip select GPIOs fails, the cleanup of
spi_bitbang_start() by calling spi_bitbang_stop() is not done. Add this
to the failure path.
Note that spi_bitbang_start() has to be called before requesting GPIOs
because the GPIO data in the spi master is populated when the master is
registed, and that doesn't happen until spi_bitbang_start() is called.
CC: Shawn Guo <shawnguo@kernel.org>
CC: Sascha Hauer <kernel@pengutronix.de>
CC: Fabio Estevam <fabio.estevam@nxp.com>
CC: Mark Brown <broonie@kernel.org>
CC: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The driver will fail to load if no gpio chip selects are specified,
this patch changes this so that it no longer fails.
It's possible to use all native chip selects, in which case there is
no reason to have a gpio chip select array. This is what happens if
the *optional* device tree property "cs-gpios" is omitted.
The spi core already checks for the absence of gpio chip selects in
the master and assigns any slaves the gpio_cs value of -ENOENT.
Also have the driver respect the standard SPI device tree property "num-cs"
to allow setting the number of chip selects without using cs-gpios.
CC: Mark Brown <broonie@kernel.org>
CC: Shawn Guo <shawnguo@kernel.org>
CC: Sascha Hauer <kernel@pengutronix.de>
CC: Fabio Estevam <fabio.estevam@nxp.com>
CC: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Fix PPC HV host crash that can occur as a result of resizing the guest
hashed page table.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fix from Radim Krčmář:
"Fix PPC HV host crash that can occur as a result of resizing the guest
hashed page table"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: PPC: Book3S HV: Fix exclusion between HPT resizing and other HPT updates
A final few MIPS fixes for 4.14:
- Fix BMIPS NULL pointer dereference (4.7)
- Fix AR7 early GPIO init allocation failure (3.19)
- Fix dead serial output on certain AR7 platforms (2.6.35)
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Merge tag 'mips_fixes_4.14_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips
Pull MIPS fixes from James Hogan:
"A final few MIPS fixes for 4.14:
- fix BMIPS NULL pointer dereference (4.7)
- fix AR7 early GPIO init allocation failure (3.19)
- fix dead serial output on certain AR7 platforms (2.6.35)"
* tag 'mips_fixes_4.14_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips:
MIPS: AR7: Ensure that serial ports are properly set up
MIPS: AR7: Defer registration of GPIO
MIPS: BMIPS: Fix missing cbr address
Following my recent transition from Imagination Technologies to the=20
reincarnated MIPS company add a .mailmap mapping for my work address,
so that `scripts/get_maintainer.pl' gets it right for past commits.
Signed-off-by: Maciej W. Rozycki <macro@mips.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This reverts commit 941f5f0f6e.
Sadly, it turns out that we really can't just do the cross-CPU IPI to
all CPU's to get their proper frequencies, because it's much too
expensive on systems with lots of cores.
So we'll have to revert this for now, and revisit it using a smarter
model (probably doing one system-wide IPI at open time, and doing all
the frequency calculations in parallel).
Reported-by: WANG Chao <chao.wang@ucloud.cn>
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Rafael J Wysocki <rafael.j.wysocki@intel.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge tag 'drm-fixes-for-v4.14-rc9' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Last few patches to wrap up.
Two i915 fixes that are on their way to stable, one vmware black
screen bug, and one const patch that I was going to drop, but it was
clearly a pretty safe one liner"
* tag 'drm-fixes-for-v4.14-rc9' of git://people.freedesktop.org/~airlied/linux:
drm/i915: Deconstruct struct sgt_dma initialiser
drm/i915: Reject unknown syncobj flags
drm/vmwgfx: Fix Ubuntu 17.10 Wayland black screen issue
drm/vmwgfx: constify vmw_fence_ops
Currentlly tps_info structure is no longer used. So use the
strobes parameter in tps65218 structure to capture the info.
Fixes: 2dc4940360 (regulator: tps65218: Remove all the compatibles)
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The CANFD transmitter delay calculation formula was updated in the
latest software drop from IFI and improves the behavior of the IFI
CANFD core during bitrate switching. Use the new formula to improve
stability of the CANFD operation.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Markus Marb <markus@marb.org>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This patch fixes the cause of an WARNING indicatng TCP has pending
retransmission in Open state in tcp_fastretrans_alert().
The root cause is a bad interaction between path mtu probing,
if enabled, and the RACK loss detection. Upong receiving a SACK
above the sequence of the MTU probing packet, RACK could mark the
probe packet lost in tcp_fastretrans_alert(), prior to calling
tcp_simple_retransmit().
tcp_simple_retransmit() only enters Loss state if it newly marks
the probe packet lost. If the probe packet is already identified as
lost by RACK, the sender remains in Open state with some packets
marked lost and retransmitted. Then the next SACK would trigger
the warning. The likely scenario is that the probe packet was
lost due to its size or network congestion. The actual impact of
this warning is small by potentially entering fast recovery an
ACK later.
The simple fix is always entering recovery (Loss) state if some
packet is marked lost during path MTU probing.
Fixes: a0370b3f3f ("tcp: enable RACK loss detection to trigger recovery")
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Reported-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Reported-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When a GSO skb of truesize O is segmented into 2 new skbs of truesize N1
and N2, we want to transfer socket ownership to the new fresh skbs.
In order to avoid expensive atomic operations on a cache line subject to
cache bouncing, we replace the sequence :
refcount_add(N1, &sk->sk_wmem_alloc);
refcount_add(N2, &sk->sk_wmem_alloc); // repeated by number of segments
refcount_sub(O, &sk->sk_wmem_alloc);
by a single
refcount_add(sum_of(N) - O, &sk->sk_wmem_alloc);
Problem is :
In some pathological cases, sum(N) - O might be a negative number, and
syzkaller bot was apparently able to trigger this trace [1]
atomic_t was ok with this construct, but we need to take care of the
negative delta with refcount_t
[1]
refcount_t: saturated; leaking memory.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8404 at lib/refcount.c:77 refcount_add_not_zero+0x198/0x200 lib/refcount.c:77
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8404 Comm: syz-executor2 Not tainted 4.14.0-rc5-mm1+ #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:16 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:52
panic+0x1e4/0x41c kernel/panic.c:183
__warn+0x1c4/0x1e0 kernel/panic.c:546
report_bug+0x211/0x2d0 lib/bug.c:183
fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:177
do_trap_no_signal arch/x86/kernel/traps.c:211 [inline]
do_trap+0x260/0x390 arch/x86/kernel/traps.c:260
do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:297
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:310
invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:905
RIP: 0010:refcount_add_not_zero+0x198/0x200 lib/refcount.c:77
RSP: 0018:ffff8801c606e3a0 EFLAGS: 00010282
RAX: 0000000000000026 RBX: 0000000000001401 RCX: 0000000000000000
RDX: 0000000000000026 RSI: ffffc900036fc000 RDI: ffffed0038c0dc68
RBP: ffff8801c606e430 R08: 0000000000000001 R09: 0000000000000000
R10: ffff8801d97f5eba R11: 0000000000000000 R12: ffff8801d5acf73c
R13: 1ffff10038c0dc75 R14: 00000000ffffffff R15: 00000000fffff72f
refcount_add+0x1b/0x60 lib/refcount.c:101
tcp_gso_segment+0x10d0/0x16b0 net/ipv4/tcp_offload.c:155
tcp4_gso_segment+0xd4/0x310 net/ipv4/tcp_offload.c:51
inet_gso_segment+0x60c/0x11c0 net/ipv4/af_inet.c:1271
skb_mac_gso_segment+0x33f/0x660 net/core/dev.c:2749
__skb_gso_segment+0x35f/0x7f0 net/core/dev.c:2821
skb_gso_segment include/linux/netdevice.h:3971 [inline]
validate_xmit_skb+0x4ba/0xb20 net/core/dev.c:3074
__dev_queue_xmit+0xe49/0x2070 net/core/dev.c:3497
dev_queue_xmit+0x17/0x20 net/core/dev.c:3538
neigh_hh_output include/net/neighbour.h:471 [inline]
neigh_output include/net/neighbour.h:479 [inline]
ip_finish_output2+0xece/0x1460 net/ipv4/ip_output.c:229
ip_finish_output+0x85e/0xd10 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:238 [inline]
ip_output+0x1cc/0x860 net/ipv4/ip_output.c:405
dst_output include/net/dst.h:459 [inline]
ip_local_out+0x95/0x160 net/ipv4/ip_output.c:124
ip_queue_xmit+0x8c6/0x18e0 net/ipv4/ip_output.c:504
tcp_transmit_skb+0x1ab7/0x3840 net/ipv4/tcp_output.c:1137
tcp_write_xmit+0x663/0x4de0 net/ipv4/tcp_output.c:2341
__tcp_push_pending_frames+0xa0/0x250 net/ipv4/tcp_output.c:2513
tcp_push_pending_frames include/net/tcp.h:1722 [inline]
tcp_data_snd_check net/ipv4/tcp_input.c:5050 [inline]
tcp_rcv_established+0x8c7/0x18a0 net/ipv4/tcp_input.c:5497
tcp_v4_do_rcv+0x2ab/0x7d0 net/ipv4/tcp_ipv4.c:1460
sk_backlog_rcv include/net/sock.h:909 [inline]
__release_sock+0x124/0x360 net/core/sock.c:2264
release_sock+0xa4/0x2a0 net/core/sock.c:2776
tcp_sendmsg+0x3a/0x50 net/ipv4/tcp.c:1462
inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:763
sock_sendmsg_nosec net/socket.c:632 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:642
___sys_sendmsg+0x31c/0x890 net/socket.c:2048
__sys_sendmmsg+0x1e6/0x5f0 net/socket.c:2138
Fixes: 14afee4b60 ("net: convert sock.sk_wmem_alloc from atomic_t to refcount_t")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
