Merge tag 'imx-defconfig-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/defconfig
i.MX defconfig update for 5.9:
- Enable PCA9450 regulator driver in arm64 defconfig.
- Enable RV8803 RTC and FSL_SAI audio support in arm64 defconfig to make
it useful for Kontron sl28 boards.
- Enable i.MX8MM clock and pinctrl driver in imx_v6_v7_defconfig to get
AARCH32 mode kernel work on AARCH64 hardware.
* tag 'imx-defconfig-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: imx_v6_v7_defconfig: Support i.MX8MM
arm64: defconfig: enable RTC and audio support on Kontron sl28 boards
arm64: defconfig: add pca9450 pmic driver
Merge tag 'tegra-for-5.9-arm-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/defconfig
ARM: tegra: Default configuration changes for v5.9-rc1
Enables a few new configuration options that are useful on the new Nexus
7 and Acer A500 devices, as well as the userspace CPU frequency governor
that's mainly used for testing.
* tag 'tegra-for-5.9-arm-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
ARM: tegra_defconfig: Enable options useful for Nexus 7 and Acer A500
ARM: tegra: Enable CPUFREQ userspace governor
Select TI chip id driver for TI's SoCs based on K3 architecture to provide
this information to user space and Kernel as it is required by other
drivers to determine SoC revision to function properly.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Tero Kristo <t-kristo@ti.com>
arm/arm64: defconfig: Update configs to use the new CROS_EC options
We refactored the CrOS EC drivers moving part of the code from the MFD
subsystem to the platform chrome subsystem. During this change we needed
to rename some config options, so, update the defconfigs accordingly.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Gwendal Grignou <gwendal@chromium.org> Tested-by: Gwendal Grignou <gwendal@chromium.org> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Dmitry Osipenko [Mon, 29 Jun 2020 02:54:56 +0000 (05:54 +0300)]
ARM: tegra_defconfig: Enable options useful for Nexus 7 and Acer A500
Enable several very useful options and drivers for hardware that is found
on Nexus 7 and Acer A500 tablet devices. Please note that some drivers may
require firmware files extracted from original Android image.
Jon Hunter [Mon, 13 Jul 2020 14:41:34 +0000 (15:41 +0100)]
ARM: tegra: Enable CPUFREQ userspace governor
Enable the CPUFREQ userspace governor in the tegra_defconfig so that
we can test CPUFREQ with the userspace governor with this configuration
on 32-bit Tegra devices.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Michael Walle [Tue, 7 Jul 2020 22:31:12 +0000 (00:31 +0200)]
arm64: defconfig: enable TSN features for ENETC and similiar hardware
Newer network cards and switches support offloading of certain packet
scheduling, classifying and actions onto the hardware itself. For
example, time-aware and credit based schedulers. To use this feature we
have to enable the corresponding modules. Please note, that this will
also enable NET_SCHED and NET_CLS_ACT as builtin because there is no
module option. The enabled modules should get us a good foundation.
Michael Walle [Fri, 3 Jul 2020 22:11:43 +0000 (00:11 +0200)]
arm64: defconfig: enable RTC and audio support on Kontron sl28 boards
Although the Kontron SMARC-sAL28 board is now supported, there is still
missing driver support for the hardware clock, audio interface and audio
codec. Let's enable them as modules (where possible).
Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Maxime Ripard [Mon, 6 Jul 2020 13:23:22 +0000 (15:23 +0200)]
ARM: sunxi: configs: Enable the Mailbox driver
The mailbox found on the A31 and later SoCs have recently gained some
support in Linux. Since it's going to be useful for crust, let's enable it
in our defconfig.
Merge tag 'renesas-arm-defconfig-for-v5.9-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/defconfig
Renesas ARM defconfig updates for v5.9
- Refresh shmobile_defconfig for v5.8-rc1
- Enable additional support for Renesas platforms to
shmobile_defconfig, multi_v7_defconfig, and the arm64 defconfig.
* tag 'renesas-arm-defconfig-for-v5.9-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
arm64: defconfig: Enable additional support for Renesas platforms
ARM: multi_v7_defconfig: Enable additional support for Renesas platforms
ARM: shmobile: defconfig: Enable RZ/A1H RTC support
ARM: shmobile: defconfig: Enable ADV7612 CEC support
ARM: shmobile: defconfig: Enable RZ/A1 CEU support
ARM: shmobile: defconfig: Enable RZ/A watchdog support
ARM: shmobile: defconfig: Enable CAT9554 support
ARM: shmobile: defconfig: Enable DA9063 ONKEY support
ARM: shmobile: defconfig: Refresh for v5.8-rc1
Maxime Ripard [Sun, 5 Jul 2020 09:18:58 +0000 (11:18 +0200)]
ARM: configs: sunxi: Run savedefconfig
We haven't run savedefconfig for a while and some options have moved
around. In order to ease the patch application / conflict resolution, let's
run it.
arm64: defconfig: Enable additional support for Renesas platforms
Increase build and test coverage by enabling support for more hardware
present on Renesas SoCs and boards:
- Renesas Gigabit Ethernet Controller on R-Car V3H, as used on the
Condor and V3HSK boards,
- Sony IMX219 and OmniVision OV5645 cameras, as used on the
AISTARVISION MIPI Adapter V2.1,
- Analog Devices ADV7511 HDMI audio, as used on various boards
(Condor, Draak, Eagle, Ebisu, V3HSK, and V3MSK).
All of the above are modular, except for Ethernet support (HDMI Audio
support is an optional feature of the modular ADV7511 driver).
ARM: multi_v7_defconfig: Enable additional support for Renesas platforms
Increase build and test coverage by enabling support for more hardware
present on Renesas SoCs and boards:
- Dialog DA9063 PMIC "ONKEY", as used on the Stout and Silk boards,
- Renesas RZ/A watchdog timer, as used on RZ/A1H and RZ/A2M boards,
- Renesas RZ/A1H Capture Engine Unit, as used on the GR-Peach
audiocamera shield expansion board,
- Analog Devices ADV7612 HDMI receiver (incl. CEC), as used on the
Koelsch and Lager boards,
- Renesas RZ/A1H Realtime Clock, as used on the Genmai and RSK+RZA1
boards.
All of the above are modular (CEC support is an optional feature of the
modular ADV7604 driver).
Refresh the defconfig for Renesas ARM boards:
- Drop CONFIG_ZBOOT_ROM_TEXT=0x0 CONFIG_ZBOOT_ROM_BSS=0x0 (no longer
needed since commit d8e48cb3505c144f ("ARM: 8984/1: Kconfig: set
default ZBOOT_ROM_TEXT/BSS value to 0x0")),
- Move CONFIG_MEDIA_SUBDRV_AUTOSELECT (moved in commit 2b6ce7fe1192c7d3 ("media: Kconfig: move the position of sub-driver
autoselection")),
- Drop CONFIG_MEDIA_CONTROLLER=y and CONFIG_VIDEO_V4L2_SUBDEV_API=y
(auto-enabled since commit 41d6da36b1e08a6c ("media: Kconfig files:
use select for V4L2 subdevs and MC")),
- Enable CONFIG_MEDIA_PLATFORM_SUPPORT (needed since commit 3d4363d26055e4ef ("media: Kconfig: add an option to filter in/out
platform drivers")).
Bjorn Andersson [Mon, 22 Jun 2020 22:27:47 +0000 (15:27 -0700)]
arm64: defconfig: Enable Qualcomm IPCC driver
The IPCC hardware block provides a mechanism for triggering interrupts
between co-processors in recent Qualcomm SoCs. This is used as basis for
most form of communication between co-processors, so enable this
support.
Linus Torvalds [Sun, 21 Jun 2020 22:41:24 +0000 (15:41 -0700)]
Merge tag 'selinux-pr-20200621' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux fixes from Paul Moore:
"Three small patches to fix problems in the SELinux code, all found via
clang.
Two patches fix potential double-free conditions and one fixes an
undefined return value"
* tag 'selinux-pr-20200621' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix undefined return of cond_evaluate_expr
selinux: fix a double free in cond_read_node()/cond_read_list()
selinux: fix double free
Linus Torvalds [Sun, 21 Jun 2020 20:04:57 +0000 (13:04 -0700)]
Merge tag 'pinctrl-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Some early fixes collected during the first week after the merge
window, all pretty self-evident, with the details below. The revert is
the crucial thing.
- Fix a warning on the Qualcomm SPMI GPIO chip being instatiated
twice without a unique irqchip struct
- Use the noirq variants of the suspend and resume callbacks in the
Tegra driver
- Clean up the errorpath on the MCP23s08 driver
- Revert the use of devm_of_iomap() in the Freescale driver as it was
regressing the platform
- Add some missing pins in the Qualcomm IPQ6018 driver
- Fix a simple documentation bug in the pinctrl-single driver"
* tag 'pinctrl-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: single: fix function name in documentation
pinctrl: qcom: ipq6018 Add missing pins in qpic pin group
Revert "pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'"
pinctrl: mcp23s08: Split to three parts: fix ptr_ret.cocci warnings
pinctrl: tegra: Use noirq suspend/resume callbacks
pinctrl: qcom: spmi-gpio: fix warning about irq chip reusage
Linus Torvalds [Sun, 21 Jun 2020 19:44:52 +0000 (12:44 -0700)]
Merge tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- fix -gz=zlib compiler option test for CONFIG_DEBUG_INFO_COMPRESSED
- improve cc-option in scripts/Kbuild.include to clean up temp files
- improve cc-option in scripts/Kconfig.include for more reliable
compile option test
- do not copy modules.builtin by 'make install' because it would break
existing systems
- use 'userprogs' syntax for watch_queue sample
* tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
samples: watch_queue: build sample program for target architecture
Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n"
scripts: Fix typo in headers_install.sh
kconfig: unify cc-option and as-option
kbuild: improve cc-option to clean up all temporary files
Makefile: Improve compressed debug info support detection
Linus Torvalds [Sun, 21 Jun 2020 17:02:53 +0000 (10:02 -0700)]
Merge tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- One fix for the interrupt rework we did last release which broke
KVM-PR
- Three commits fixing some fallout from the READ_ONCE() changes
interacting badly with our 8xx 16K pages support, which uses a pte_t
that is a structure of 4 actual PTEs
- A cleanup of the 8xx pte_update() to use the newly added pmd_off()
- A fix for a crash when handling an oops if CONFIG_DEBUG_VIRTUAL is
enabled
- A minor fix for the SPU syscall generation
Thanks to Aneesh Kumar K.V, Christian Zigotzky, Christophe Leroy, Mike
Rapoport, Nicholas Piggin.
* tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/8xx: Provide ptep_get() with 16k pages
mm: Allow arches to provide ptep_get()
mm/gup: Use huge_ptep_get() in gup_hugepte()
powerpc/syscalls: Use the number when building SPU syscall table
powerpc/8xx: use pmd_off() to access a PMD entry in pte_update()
powerpc/64s: Fix KVM interrupt using wrong save area
powerpc: Fix kernel crash in show_instructions() w/DEBUG_VIRTUAL
Masahiro Yamada [Wed, 17 Jun 2020 02:08:38 +0000 (11:08 +0900)]
samples: watch_queue: build sample program for target architecture
This userspace program includes UAPI headers exported to usr/include/.
'make headers' always works for the target architecture (i.e. the same
architecture as the kernel), so the sample program should be built for
the target as well. Kbuild now supports 'userprogs' for that.
I also guarded the CONFIG option by 'depends on CC_CAN_LINK' because
$(CC) may not provide libc.
Masahiro Yamada [Fri, 19 Jun 2020 15:09:55 +0000 (00:09 +0900)]
Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n"
This reverts commit 2897e05f61efa631ecdcdc13322fdeade948e76b,
which broke build systems that need to install files to a certain
path, but do not set INSTALL_MOD_PATH when invoking 'make install'.
While modules.builtin is useful also for CONFIG_MODULES=n, this change
in the behavior is quite unexpected. Maybe "make modules_install"
can install modules.builtin irrespective of CONFIG_MODULES as Jonas
originally suggested.
Anyway, that commit should be reverted ASAP.
Reported-by: Douglas Anderson <dianders@chromium.org> Reported-by: Guenter Roeck <linux@roeck-us.net> Cc: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net>
Linus Torvalds [Sun, 21 Jun 2020 02:23:13 +0000 (19:23 -0700)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"One minor fix and two patches reworking the ata dma drain for the
!CONFIG_LIBATA case. The latter is a 5.7 regression fix"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: Wire up ata_scsi_dma_need_drain for SAS HBA drivers
scsi: libata: Provide an ata_scsi_dma_need_drain stub for !CONFIG_ATA
scsi: ufs-bsg: Fix runtime PM imbalance on error
Linus Torvalds [Sun, 21 Jun 2020 02:18:27 +0000 (19:18 -0700)]
Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
- a small collection of remaining API conversion patches (all acked)
which allow to finally remove the deprecated API
- some documentation fixes and a MAINTAINERS addition
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
MAINTAINERS: Add robert and myself as qcom i2c cci maintainers
i2c: smbus: Fix spelling mistake in the comments
Documentation/i2c: SMBus start signal is S not A
i2c: remove deprecated i2c_new_device API
Documentation: media: convert to use i2c_new_client_device()
video: backlight: tosa_lcd: convert to use i2c_new_client_device()
x86/platform/intel-mid: convert to use i2c_new_client_device()
drm: encoder_slave: use new I2C API
drm: encoder_slave: fix refcouting error for modules
Drew Fustini [Fri, 12 Jun 2020 11:27:58 +0000 (13:27 +0200)]
pinctrl: single: fix function name in documentation
Use the correct the function name in the documentation for
"pcs_parse_one_pinctrl_entry()".
"smux_parse_one_pinctrl_entry()" appears to be an artifact from the
development of a prior patch series ("simple pinmux driver") which
transformed into pinctrl-single.
Linus Torvalds [Sat, 20 Jun 2020 20:17:47 +0000 (13:17 -0700)]
Merge tag 'trace-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- Have recordmcount work with > 64K sections (to support LTO)
- kprobe RCU fixes
- Correct a kprobe critical section with missing mutex
- Remove redundant arch_disarm_kprobe() call
- Fix lockup when kretprobe triggers within kprobe_flush_task()
- Fix memory leak in fetch_op_data operations
- Fix sleep in atomic in ftrace trace array sample code
- Free up memory on failure in sample trace array code
- Fix incorrect reporting of function_graph fields in format file
- Fix quote within quote parsing in bootconfig
- Fix return value of bootconfig tool
- Add testcases for bootconfig tool
- Fix maybe uninitialized warning in ftrace pid file code
- Remove unused variable in tracing_iter_reset()
- Fix some typos
* tag 'trace-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace: Fix maybe-uninitialized compiler warning
tools/bootconfig: Add testcase for show-command and quotes test
tools/bootconfig: Fix to return 0 if succeeded to show the bootconfig
tools/bootconfig: Fix to use correct quotes for value
proc/bootconfig: Fix to use correct quotes for value
tracing: Remove unused event variable in tracing_iter_reset
tracing/probe: Fix memleak in fetch_op_data operations
trace: Fix typo in allocate_ftrace_ops()'s comment
tracing: Make ftrace packed events have align of 1
sample-trace-array: Remove trace_array 'sample-instance'
sample-trace-array: Fix sleeping function called from invalid context
kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
kprobes: Remove redundant arch_disarm_kprobe() call
kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
kprobes: Use non RCU traversal APIs on kprobe_tables if possible
kprobes: Suppress the suspicious RCU warning on kprobes
recordmcount: support >64k sections
Linus Torvalds [Sat, 20 Jun 2020 20:13:21 +0000 (13:13 -0700)]
Merge tag 'libnvdimm-for-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"A feature (papr_scm health retrieval) and a fix (sysfs attribute
visibility) for v5.8.
Vaibhav explains in the merge commit below why missing v5.8 would be
painful and I agreed to try a -rc2 pull because only cosmetics kept
this out of -rc1 and his initial versions were posted in more than
enough time for v5.8 consideration:
'These patches are tied to specific features that were committed to
customers in upcoming distros releases (RHEL and SLES) whose
time-lines are tied to 5.8 kernel release.
Being able to track the health of an nvdimm is critical for our
customers that are running workloads leveraging papr-scm nvdimms.
Missing the 5.8 kernel would mean missing the distro timelines and
shifting forward the availability of this feature in distro kernels
by at least 6 months'
Summary:
- Fix the visibility of the region 'align' attribute.
The new unit tests for region alignment handling caught a corner
case where the alignment cannot be specified if the region is
converted from static to dynamic provisioning at runtime.
- Add support for device health retrieval for the persistent memory
supported by the papr_scm driver.
This includes both the standard sysfs "health flags" that the nfit
persistent memory driver publishes and a mechanism for the ndctl
tool to retrieve a health-command payload"
* tag 'libnvdimm-for-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nvdimm/region: always show the 'align' attribute
powerpc/papr_scm: Implement support for PAPR_PDSM_HEALTH
ndctl/papr_scm,uapi: Add support for PAPR nvdimm specific methods
powerpc/papr_scm: Improve error logging and handling papr_scm_ndctl()
powerpc/papr_scm: Fetch nvdimm health information from PHYP
seq_buf: Export seq_buf_printf
powerpc: Document details on H_SCM_HEALTH hcall
After commit 15cb0df77b4c ("pinctrl: freescale: imx: add shared
input select reg support"). i.MX7D has two iomux controllers
iomuxc and iomuxc-lpsr which share select_input register for
daisy chain settings.
If use 'devm_of_iomap()', when probe the iomuxc-lpsr, will call
devm_request_mem_region() for the region <0x30330000-0x3033ffff>
for the first time. Then, next time when probe the iomuxc, API
devm_platform_ioremap_resource() will also use the API
devm_request_mem_region() for the share region <0x30330000-0x3033ffff>
again, then cause issue, log like below:
[ 0.179561] imx7d-pinctrl 302c0000.iomuxc-lpsr: initialized IMX pinctrl driver
[ 0.191742] imx7d-pinctrl 30330000.pinctrl: can't request region for resource [mem 0x30330000-0x3033ffff]
[ 0.191842] imx7d-pinctrl: probe of 30330000.pinctrl failed with error -16
Fixes: b2e4f33507c0 ("pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'") Signed-off-by: Haibo Chen <haibo.chen@nxp.com> Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Link: https://lore.kernel.org/r/1591673223-1680-1-git-send-email-haibo.chen@nxp.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Torvalds [Sat, 20 Jun 2020 19:31:08 +0000 (12:31 -0700)]
Merge tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- a few ptrace fixes mostly for strace and seccomp_bpf kernel tests
findings
- cleanup unused pm callbacks in virtio ccw
- replace kmalloc + memset with kzalloc in crypto
- use $(LD) for vDSO linkage to make clang happy
- fix vDSO clock_getres() to preserve the same behaviour as
posix_get_hrtimer_res()
- fix workqueue cpumask warning when NUMA=n and nr_node_ids=2
- reduce SLSB writes during input processing, improve warnings and
cleanup qdio_data usage in qdio
- a few fixes to use scnprintf() instead of snprintf()
* tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: fix syscall_get_error for compat processes
s390/qdio: warn about unexpected SLSB states
s390/qdio: clean up usage of qdio_data
s390/numa: let NODES_SHIFT depend on NEED_MULTIPLE_NODES
s390/vdso: fix vDSO clock_getres()
s390/vdso: Use $(LD) instead of $(CC) to link vDSO
s390/protvirt: use scnprintf() instead of snprintf()
s390: use scnprintf() in sys_##_prefix##_##_name##_show
s390/crypto: use scnprintf() instead of snprintf()
s390/zcrypt: use kzalloc
s390/virtio: remove unused pm callbacks
s390/qdio: reduce SLSB writes during Input Queue processing
selftests/seccomp: s390 shares the syscall and return value register
s390/ptrace: fix setting syscall number
s390/ptrace: pass invalid syscall numbers to tracing
s390/ptrace: return -ENOSYS when invalid syscall is supplied
s390/seccomp: pass syscall arguments via seccomp_data
s390/qdio: fine-tune SLSB update
Linus Torvalds [Sat, 20 Jun 2020 19:14:29 +0000 (12:14 -0700)]
Merge tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- a workaround for a compiler surprise related to the "r" inline
assembly that allows LLVM to boot.
- a fix to avoid WX-only mappings, which the ISA does not allow. While
this probably manifests in many ways, the bug was found in stress-ng.
- a missing lock in set_direct_map_*(), which due to a recent lockdep
change started asserting.
* tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: Acquire mmap lock before invoking walk_page_range
RISC-V: Don't allow write+exec only page mapping request in mmap
riscv/atomic: Fix sign extension for RV64I
Linus Torvalds [Sat, 20 Jun 2020 19:10:09 +0000 (12:10 -0700)]
Merge tag 'linux-kselftest-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest cleanups from Shuah Khan:
- ftrace "requires:" list for simplifying and unifying requirement
checks for each test case, adding "requires:" line instead of
checking required ftrace interfaces in each test case.
- a minor spelling correction patch
* tag 'linux-kselftest-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/ftrace: Support ":README" suffix for requires
selftests/ftrace: Support ":tracer" suffix for requires
selftests/ftrace: Convert check_filter_file() with requires list
selftests/ftrace: Convert required interface checks into requires list
selftests/ftrace: Add "requires:" list support
selftests/ftrace: Return unsupported for the unconfigured features
selftests/ftrace: Allow ":" in description
tools: testing: ftrace: trigger: fix spelling mistake
David Howells [Fri, 19 Jun 2020 22:39:36 +0000 (23:39 +0100)]
afs: Fix hang on rmmod due to outstanding timer
The fileserver probe timer, net->fs_probe_timer, isn't cancelled when
the kafs module is being removed and so the count it holds on
net->servers_outstanding doesn't get dropped..
This causes rmmod to wait forever. The hung process shows a stack like:
(1) Attempting to cancel the probe timer and, if successful, drop the
count that the timer was holding.
(2) Make the timer function just drop the count and not schedule the
prober if the afs portion of net namespace is being destroyed.
Also, whilst we're at it, make the following changes:
(3) Initialise net->servers_outstanding to 1 and decrement it before
waiting on it so that it doesn't generate wake up events by being
decremented to 0 until we're cleaning up.
(4) Switch the atomic_dec() on ->servers_outstanding for ->fs_timer in
afs_purge_servers() to use the helper function for that.
Fixes: 460565c232b8 ("afs: Actively poll fileservers to maintain NAT or firewall openings") Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Thu, 18 Jun 2020 23:01:28 +0000 (00:01 +0100)]
afs: Fix afs_do_lookup() to call correct fetch-status op variant
Fix afs_do_lookup()'s fallback case for when FS.InlineBulkStatus isn't
supported by the server.
In the fallback, it calls FS.FetchStatus for the specific vnode it's
meant to be looking up. Commit eb4e86e70989 broke this by renaming one
of the two identically-named afs_fetch_status_operation descriptors to
something else so that one of them could be made non-static. The site
that used the renamed one, however, wasn't renamed and didn't produce
any warning because the other was declared in a header.
Fix this by making afs_do_lookup() use the renamed variant.
Note that there are two variants of the success method because one is
called from ->lookup() where we may or may not have an inode, but can't
call iget until after we've talked to the server - whereas the other is
called from within iget where we have an inode, but it may or may not be
initialised.
The latter variant expects there to be an inode, but because it's being
called from there former case, there might not be - resulting in an oops
like the following:
Christophe Leroy [Mon, 15 Jun 2020 12:57:59 +0000 (12:57 +0000)]
powerpc/8xx: Provide ptep_get() with 16k pages
READ_ONCE() now enforces atomic read, which leads to:
CC mm/gup.o
In file included from ./include/linux/kernel.h:11:0,
from mm/gup.c:2:
In function 'gup_hugepte.constprop',
inlined from 'gup_huge_pd.isra.79' at mm/gup.c:2465:8:
./include/linux/compiler.h:392:38: error: call to '__compiletime_assert_222' declared with attribute error: Unsupported access size for {READ,WRITE}_ONCE().
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
./include/linux/compiler.h:373:4: note: in definition of macro '__compiletime_assert'
prefix ## suffix(); \
^
./include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
./include/linux/compiler.h:405:2: note: in expansion of macro 'compiletime_assert'
compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
^
./include/linux/compiler.h:291:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
compiletime_assert_rwonce_type(x); \
^
mm/gup.c:2428:8: note: in expansion of macro 'READ_ONCE'
pte = READ_ONCE(*ptep);
^
In function 'gup_get_pte',
inlined from 'gup_pte_range' at mm/gup.c:2228:9,
inlined from 'gup_pmd_range' at mm/gup.c:2613:15,
inlined from 'gup_pud_range' at mm/gup.c:2641:15,
inlined from 'gup_p4d_range' at mm/gup.c:2666:15,
inlined from 'gup_pgd_range' at mm/gup.c:2694:15,
inlined from 'internal_get_user_pages_fast' at mm/gup.c:2795:3:
./include/linux/compiler.h:392:38: error: call to '__compiletime_assert_219' declared with attribute error: Unsupported access size for {READ,WRITE}_ONCE().
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
./include/linux/compiler.h:373:4: note: in definition of macro '__compiletime_assert'
prefix ## suffix(); \
^
./include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
./include/linux/compiler.h:405:2: note: in expansion of macro 'compiletime_assert'
compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
^
./include/linux/compiler.h:291:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
compiletime_assert_rwonce_type(x); \
^
mm/gup.c:2199:9: note: in expansion of macro 'READ_ONCE'
return READ_ONCE(*ptep);
^
make[2]: *** [mm/gup.o] Error 1
Christophe Leroy [Mon, 15 Jun 2020 12:57:58 +0000 (12:57 +0000)]
mm: Allow arches to provide ptep_get()
Since commit c29e7b63d59e ("READ_ONCE: Enforce atomicity for
{READ,WRITE}_ONCE() memory accesses") it is not possible anymore to
use READ_ONCE() to access complex page table entries like the one
defined for powerpc 8xx with 16k size pages.
Define a ptep_get() helper that architectures can override instead
of performing a READ_ONCE() on the page table entry pointer.
Dan Williams [Fri, 19 Jun 2020 21:18:51 +0000 (14:18 -0700)]
Merge branch 'for-5.8/papr_scm' into libnvdimm-for-next
Include the papr_scm health retrieval feature for v5.8-rc2. The
functionality was initially posted well in advance of the merge window,
but review comments and a late build-bot warning kept them out of the
v5.8-rc1 libnvdimm pull request.
Vaibhav notes:
These patches are tied to specific features that were committed to
customers in upcoming distros releases (RHEL and SLES) whose time-lines
are tied to 5.8 kernel release.
Being able to track the health of an nvdimm is critical for our
customers that are running workloads leveraging papr-scm nvdimms.
Missing the 5.8 kernel would mean missing the distro timelines and
shifting forward the availability of this feature in distro kernels by
at least 6 months.
Linus Torvalds [Fri, 19 Jun 2020 20:16:58 +0000 (13:16 -0700)]
Merge tag 'io_uring-5.8-2020-06-19' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
- Catch a case where io_sq_thread() didn't do proper mm acquire
- Ensure poll completions are reaped on shutdown
- Async cancelation and run fixes (Pavel)
- io-poll race fixes (Xiaoguang)
- Request cleanup race fix (Xiaoguang)
* tag 'io_uring-5.8-2020-06-19' of git://git.kernel.dk/linux-block:
io_uring: fix possible race condition against REQ_F_NEED_CLEANUP
io_uring: reap poll completions while waiting for refs to drop on exit
io_uring: acquire 'mm' for task_work for SQPOLL
io_uring: add memory barrier to synchronize io_kiocb's result and iopoll_completed
io_uring: don't fail links for EAGAIN error in IOPOLL mode
io_uring: cancel by ->task not pid
io_uring: lazy get task
io_uring: batch cancel in io_uring_cancel_files()
io_uring: cancel all task's requests on exit
io-wq: add an option to cancel all matched reqs
io-wq: reorder cancellation pending -> running
io_uring: fix lazy work init
Linus Torvalds [Fri, 19 Jun 2020 20:11:26 +0000 (13:11 -0700)]
Merge tag 'block-5.8-2020-06-19' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- Use import_uuid() where appropriate (Andy)
- bcache fixes (Coly, Mauricio, Zhiqiang)
- blktrace sparse warnings fix (Jan)
- blktrace concurrent setup fix (Luis)
- blkdev_get use-after-free fix (Jason)
- Ensure all blk-mq maps are updated (Weiping)
- Loop invalidate bdev fix (Zheng)
* tag 'block-5.8-2020-06-19' of git://git.kernel.dk/linux-block:
block: make function 'kill_bdev' static
loop: replace kill_bdev with invalidate_bdev
partitions/ldm: Replace uuid_copy() with import_uuid() where it makes sense
block: update hctx map when use multiple maps
blktrace: Avoid sparse warnings when assigning q->blk_trace
blktrace: break out of blktrace setup on concurrent calls
block: Fix use-after-free in blkdev_get()
trace/events/block.h: drop kernel-doc for dropped function parameter
blk-mq: Remove redundant 'return' statement
bcache: pr_info() format clean up in bcache_device_init()
bcache: use delayed kworker fo asynchronous devices registration
bcache: check and adjust logical block size for backing devices
bcache: fix potential deadlock problem in btree_gc_coalesce
Linus Torvalds [Fri, 19 Jun 2020 20:09:40 +0000 (13:09 -0700)]
Merge tag 'libata-5.8-2020-06-19' of git://git.kernel.dk/linux-block
Pull libata fixes from Jens Axboe:
"A few minor changes that should go into this release"
* tag 'libata-5.8-2020-06-19' of git://git.kernel.dk/linux-block:
libata: Use per port sync for detach
ata/libata: Fix usage of page address by page_address in ata_scsi_mode_select_xlat function
sata_rcar: handle pm_runtime_get_sync failure cases
Linus Torvalds [Fri, 19 Jun 2020 19:40:57 +0000 (12:40 -0700)]
Merge tag 'drm-fixes-2020-06-19' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Just i915 and amd here.
i915 has some workaround movement so they get applied at the right
times, and a timeslicing fix, along with some display fixes.
AMD has a few display floating point fix and a devcgroup fix for
amdkfd.
i915:
- Fix for timeslicing and virtual engines/unpremptable requests (+ 1
dependency patch)
- Fixes into TypeC register programming and interrupt storm detecting
- Disable DIP on MST ports with the transcoder clock still on
- Avoid missing GT workarounds at reset for HSW and older gens
- Fix for unwinding multiple requests missing force restore
- Fix encoder type check for DDI vswing sequence
- Build warning fixes
amdgpu:
- Fix kvfree/kfree mixup
- Fix hawaii device id in powertune configuration
- Display FP fixes
- Documentation fixes
amdkfd:
- devcgroup check fix"
* tag 'drm-fixes-2020-06-19' of git://anongit.freedesktop.org/drm/drm: (23 commits)
drm/amdgpu: fix documentation around busy_percentage
drm/amdgpu/pm: update comment to clarify Overdrive interfaces
drm/amdkfd: Use correct major in devcgroup check
drm/i915/display: Fix the encoder type check
drm/i915/icl+: Fix hotplug interrupt disabling after storm detection
drm/i915/gt: Move gen4 GT workarounds from init_clock_gating to workarounds
drm/i915/gt: Move ilk GT workarounds from init_clock_gating to workarounds
drm/i915/gt: Move snb GT workarounds from init_clock_gating to workarounds
drm/i915/gt: Move vlv GT workarounds from init_clock_gating to workarounds
drm/i915/gt: Move ivb GT workarounds from init_clock_gating to workarounds
drm/i915/gt: Move hsw GT workarounds from init_clock_gating to workarounds
drm/i915/icl: Disable DIP on MST ports with the transcoder clock still on
drm/i915/gt: Incrementally check for rewinding
drm/i915/tc: fix the reset of ln0
drm/i915/gt: Prevent timeslicing into unpreemptable requests
drm/i915/selftests: Restore to default heartbeat
drm/i915: work around false-positive maybe-uninitialized warning
drm/i915/pmu: avoid an maybe-uninitialized warning
drm/i915/gt: Incorporate the virtual engine into timeslicing
drm/amd/display: Rework dsc to isolate FPU operations
...
Linus Torvalds [Fri, 19 Jun 2020 19:25:04 +0000 (12:25 -0700)]
Merge tag 'ceph-for-5.8-rc2' of git://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"An important follow-up for replica reads support that went into -rc1
and two target_copy() fixups"
* tag 'ceph-for-5.8-rc2' of git://github.com/ceph/ceph-client:
libceph: don't omit used_replica in target_copy()
libceph: don't omit recovery_deletes in target_copy()
libceph: move away from global osd_req_flags
Linus Torvalds [Fri, 19 Jun 2020 19:19:12 +0000 (12:19 -0700)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Unfortunately, we still have a number of outstanding issues so there
will be more fixes to come, but this lot are a good start.
- Fix handling of watchpoints triggered by uaccess routines
- Fix initialisation of gigantic pages for CMA buffers
- Raise minimum clang version for BTI to avoid miscompilation
- Fix data race in SVE vector length configuration code
- Ensure address tags are ignored in kern_addr_valid()
- Dump register state on fatal BTI exception
- kexec_file() cleanup to use struct_size() macro"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints
arm64: kexec_file: Use struct_size() in kmalloc()
arm64: mm: reserve hugetlb CMA after numa_init
arm64: bti: Require clang >= 10.0.1 for in-kernel BTI support
arm64: sve: Fix build failure when ARM64_SVE=y and SYSCTL=n
arm64: pgtable: Clear the GP bit for non-executable kernel pages
arm64: mm: reset address tag set by kasan sw tagging
arm64: traps: Dump registers prior to panic() in bad_mode()
arm64/sve: Eliminate data races on sve_default_vl
docs/arm64: Fix typo'd #define in sve.rst
arm64: remove TEXT_OFFSET randomization
Linus Torvalds [Fri, 19 Jun 2020 18:45:03 +0000 (11:45 -0700)]
Merge tag 'overflow-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull flex-array size helper from Kees Cook:
"During the treewide clean-ups of zero-length "flexible arrays", the
struct_size() helper was heavily used, but it was noticed that many
times it would have been nice to have an additional helper to get the
size of just the flexible array itself.
This need appears to be even more common when cleaning up the 1-byte
array "flexible arrays", so Gustavo implemented it.
I'd love to get this landed early so it can be used during the v5.9
dev cycle to ease the 1-byte array cleanups."
* tag 'overflow-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
overflow.h: Add flex_array_size() helper
Linus Torvalds [Fri, 19 Jun 2020 18:39:57 +0000 (11:39 -0700)]
Merge tag 'perf-tools-fixes-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tooling fixes from Arnaldo Carvalho de Melo:
- Update various UAPI headers, some automatically adding support for a
new MSR and the faccess2 syscall.
- Fix corner case NULL deref in the histograms code.
- Fix corner case NULL deref in 'perf stat' aggregation code.
- Fix array pointer deref and old style declaration in the parsing of
events.
- Fix segfault when processing ZSTD compressed perf.data files in 'perf
script' due to lack of initialization of the ZSTD library.
- Handle __attribute__((user)) in libtraceevent fixing the parsing of
syscall tracepoints with user buffers.
- Make libtraevent aware of __builtin_expect() appearing in tracepoint
fields.
- Make the BPF prologue generation use bpf_probe_read_{user,kernel}().
- Fix the '@user' attribute parsing in kprobes variables in 'perf
probe'.
- Fix error message when asking for -fsanitize=address without required
libraries.
* tag 'perf-tools-fixes-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (22 commits)
perf build: Fix error message when asking for -fsanitize=address without required libraries
tools lib traceevent: Add handler for __builtin_expect()
tools lib traceevent: Handle __attribute__((user)) in field names
tools lib traceevent: Add append() function helper for appending strings
tools headers UAPI: Sync linux/fs.h with the kernel sources
tools include UAPI: Sync linux/vhost.h with the kernel sources
tools arch x86: Sync the msr-index.h copy with the kernel sources
perf script: Initialize zstd_data
perf pmu: Remove unused declaration
perf parse-events: Fix an old style declaration
perf parse-events: Fix an incompatible pointer
perf bpf: Fix bpf prologue generation
perf probe: Fix user attribute access in kprobes
perf stat: Fix NULL pointer dereference
perf report: Fix NULL pointer dereference in hists__fprintf_nr_sample_events()
tools headers UAPI: Sync kvm.h headers with the kernel sources
tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
tools headers UAPI: Sync linux/fscrypt.h with the kernel sources
perf beauty: Add support to STATX_MNT_ID in the 'statx' syscall 'mask' argument
tools headers uapi: Sync linux/stat.h with the kernel sources
...
Wolfram Sang [Mon, 15 Jun 2020 07:58:13 +0000 (09:58 +0200)]
video: backlight: tosa_lcd: convert to use i2c_new_client_device()
Move away from the deprecated API and return the shiny new ERRPTR where
useful.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Mon, 15 Jun 2020 07:58:12 +0000 (09:58 +0200)]
x86/platform/intel-mid: convert to use i2c_new_client_device()
Move away from the deprecated API and return the shiny new ERRPTR where
useful.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Mon, 15 Jun 2020 07:58:11 +0000 (09:58 +0200)]
drm: encoder_slave: use new I2C API
i2c_new_client() is deprecated, use the replacement
i2c_new_client_device(). Also, we have a helper to check if a driver is
bound. Use it to simplify the code. Note that this changes the errno for
a failed device creation from ENOMEM to ENODEV. No callers currently
interpret this errno, though, so we use this condensed error check.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Atish Patra [Wed, 17 Jun 2020 20:37:32 +0000 (13:37 -0700)]
RISC-V: Acquire mmap lock before invoking walk_page_range
As per walk_page_range documentation, mmap lock should be acquired by the
caller before invoking walk_page_range. mmap_assert_locked gets triggered
without that. The details can be found here.
Yash Shah [Tue, 16 Jun 2020 14:03:06 +0000 (19:33 +0530)]
RISC-V: Don't allow write+exec only page mapping request in mmap
As per the table 4.4 of version "20190608-Priv-MSU-Ratified" of the
RISC-V instruction set manual[0], the PTE permission bit combination of
"write+exec only" is reserved for future use. Hence, don't allow such
mapping request in mmap call.
An issue is been reported by David Abdurachmanov, that while running
stress-ng with "sysbadaddr" argument, RCU stalls are observed on RISC-V
specific kernel.
This issue arises when the stress-sysbadaddr request for pages with
"write+exec only" permission bits and then passes the address obtain
from this mmap call to various system call. For the riscv kernel, the
mmap call should fail for this particular combination of permission bits
since it's not valid.
Signed-off-by: Yash Shah <yash.shah@sifive.com> Reported-by: David Abdurachmanov <david.abdurachmanov@gmail.com>
[Palmer: Refer to the latest ISA specification at the only link I could
find, and update the terminology.] Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Dave Airlie [Thu, 18 Jun 2020 23:45:47 +0000 (09:45 +1000)]
Merge tag 'drm-intel-fixes-2020-06-18' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Fix for timeslicing and virtual engines/unpremptable requests
(+ 1 dependency patch)
- Fixes into TypeC register programming and interrupt storm detecting
- Disable DIP on MST ports with the transcoder clock still on
- Avoid missing GT workarounds at reset for HSW and older gens
- Fix for unwinding multiple requests missing force restore
- Fix encoder type check for DDI vswing sequence
- Build warning fixes
Linus Torvalds [Thu, 18 Jun 2020 19:35:51 +0000 (12:35 -0700)]
Merge branch 'hch' (maccess patches from Christoph Hellwig)
Merge non-faulting memory access cleanups from Christoph Hellwig:
"Andrew and I decided to drop the patches implementing your suggested
rename of the probe_kernel_* and probe_user_* helpers from -mm as
there were way to many conflicts.
After -rc1 might be a good time for this as all the conflicts are
resolved now"
This also adds a type safety checking patch on top of the renaming
series to make the subtle behavioral difference between 'get_user()' and
'get_kernel_nofault()' less potentially dangerous and surprising.
* emailed patches from Christoph Hellwig <hch@lst.de>:
maccess: make get_kernel_nofault() check for minimal type compatibility
maccess: rename probe_kernel_address to get_kernel_nofault
maccess: rename probe_user_{read,write} to copy_{from,to}_user_nofault
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
Linus Torvalds [Thu, 18 Jun 2020 19:10:37 +0000 (12:10 -0700)]
maccess: make get_kernel_nofault() check for minimal type compatibility
Now that we've renamed probe_kernel_address() to get_kernel_nofault()
and made it look and behave more in line with get_user(), some of the
subtle type behavior differences end up being more obvious and possibly
dangerous.
When you do
get_user(val, user_ptr);
the type of the access comes from the "user_ptr" part, and the above
basically acts as
val = *user_ptr;
by design (except, of course, for the fact that the actual dereference
is done with a user access).
Note how in the above case, the type of the end result comes from the
pointer argument, and then the value is cast to the type of 'val' as
part of the assignment.
So the type of the pointer is ultimately the more important type both
for the access itself.
But 'get_kernel_nofault()' may now _look_ similar, but it behaves very
differently. When you do
get_kernel_nofault(val, kernel_ptr);
it behaves like
val = *(typeof(val) *)kernel_ptr;
except, of course, for the fact that the actual dereference is done with
exception handling so that a faulting access is suppressed and returned
as the error code.
But note how different the casting behavior of the two superficially
similar accesses are: one does the actual access in the size of the type
the pointer points to, while the other does the access in the size of
the target, and ignores the pointer type entirely.
Actually changing get_kernel_nofault() to act like get_user() is almost
certainly the right thing to do eventually, but in the meantime this
patch adds logit to at least verify that the pointer type is compatible
with the type of the result.
In many cases, this involves just casting the pointer to 'void *' to
make it obvious that the type of the pointer is not the important part.
It's not how 'get_user()' acts, but at least the behavioral difference
is now obvious and explicit.
Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently, address spaces in warnings are displayed as '<asn:X>' with
'X' being the address space's arbitrary number.
But since sparse v0.6.0-rc1 (late December 2018), sparse allows you to
define the address spaces using an identifier instead of a number. This
identifier is then directly used in the warnings.
So, use the identifiers '__user', '__iomem', '__percpu' & '__rcu' for
the corresponding address spaces. The default address space, __kernel,
being not displayed in warnings, stays defined as '0'.
With this change, warnings that used to be displayed as:
cast removes address space '<asn:1>' of expression
... void [noderef] <asn:2> *
will now be displayed as:
cast removes address space '__user' of expression
... void [noderef] __iomem *
This also moves the __kernel annotation to be the first one, since it is
quite different from the others because it's the default one, and so:
- it's never displayed
- it's normally not needed, nor in type annotations, nor in cast
between address spaces. The only time it's needed is when it's
combined with a typeof to express "the same type as this one but
without the address space"
- it can't be defined with a name, '0' must be used.
So, it seemed strange to me to have it in the middle of the other
ones.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Zheng Bin [Thu, 18 Jun 2020 04:21:37 +0000 (12:21 +0800)]
loop: replace kill_bdev with invalidate_bdev
When a filesystem is mounted on a loop device and on a loop ioctl
LOOP_SET_STATUS64, because of kill_bdev, buffer_head mappings are getting
destroyed.
kill_bdev
truncate_inode_pages
truncate_inode_pages_range
do_invalidatepage
block_invalidatepage
discard_buffer -->clear BH_Mapped flag
sb_bread
__bread_gfp
bh = __getblk_gfp
-->discard_buffer clear BH_Mapped flag
__bread_slow
submit_bh
submit_bh_wbc
BUG_ON(!buffer_mapped(bh)) --> hit this BUG_ON
Fixes: fc30c4163835 ("loop: drop caches if offset or block_size are changed") Signed-off-by: Zheng Bin <zhengbin13@huawei.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Kai-Heng Feng [Wed, 3 Jun 2020 07:48:19 +0000 (15:48 +0800)]
libata: Use per port sync for detach
Commit 60f0b513e4e1 ("libata: Ensure ata_port probe has completed before
detach") may cause system freeze during suspend.
Using async_synchronize_full() in PM callbacks is wrong, since async
callbacks that are already scheduled may wait for not-yet-scheduled
callbacks, causes a circular dependency.
Instead of using big hammer like async_synchronize_full(), use async
cookie to make sure port probe are synced, without affecting other
scheduled PM callbacks.
Fixes: 60f0b513e4e1 ("libata: Ensure ata_port probe has completed before detach") Suggested-by: John Garry <john.garry@huawei.com> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Tested-by: John Garry <john.garry@huawei.com> BugLink: https://bugs.launchpad.net/bugs/1867983 Signed-off-by: Jens Axboe <axboe@kernel.dk>
But clearing REQ_F_NEED_CLEANUP might be unsafe. The io request may
already have been completed, and then io_complete_rw_iopoll()
and io_complete_rw() will be called, both of which will also modify
req->flags if needed. This causes a race condition, with concurrent
non-atomic modification of req->flags.
To eliminate this race, in io_read() or io_write(), if io request is
submitted successfully, we don't remove REQ_F_NEED_CLEANUP flag. If
REQ_F_NEED_CLEANUP is set, we'll leave __io_req_aux_free() to the
iovec cleanup work correspondingly.
Cc: stable@vger.kernel.org Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Tiezhu Yang [Thu, 18 Jun 2020 02:06:01 +0000 (10:06 +0800)]
perf build: Fix error message when asking for -fsanitize=address without required libraries
When build perf with ASan or UBSan, if libasan or libubsan can not find,
the feature-glibc is 0 and there exists the following error log which is
wrong, because we can find gnu/libc-version.h in /usr/include,
glibc-devel is also installed.
[yangtiezhu@linux perf]$ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=address'
BUILD: Doing 'make -j4' parallel build
HOSTCC fixdep.o
HOSTLD fixdep-in.o
LINK fixdep
<stdin>:1:0: warning: -fsanitize=address and -fsanitize=kernel-address are not supported for this target
<stdin>:1:0: warning: -fsanitize=address not supported for this target
Auto-detecting system features:
... dwarf: [ OFF ]
... dwarf_getlocations: [ OFF ]
... glibc: [ OFF ]
... gtk2: [ OFF ]
... libaudit: [ OFF ]
... libbfd: [ OFF ]
... libcap: [ OFF ]
... libelf: [ OFF ]
... libnuma: [ OFF ]
... numa_num_possible_cpus: [ OFF ]
... libperl: [ OFF ]
... libpython: [ OFF ]
... libcrypto: [ OFF ]
... libunwind: [ OFF ]
... libdw-dwarf-unwind: [ OFF ]
... zlib: [ OFF ]
... lzma: [ OFF ]
... get_cpuid: [ OFF ]
... bpf: [ OFF ]
... libaio: [ OFF ]
... libzstd: [ OFF ]
... disassembler-four-args: [ OFF ]
Makefile.config:393: *** No gnu/libc-version.h found, please install glibc-dev[el]. Stop.
Makefile.perf:224: recipe for target 'sub-make' failed
make[1]: *** [sub-make] Error 2
Makefile:69: recipe for target 'all' failed
make: *** [all] Error 2
[yangtiezhu@linux perf]$ ls /usr/include/gnu/libc-version.h
/usr/include/gnu/libc-version.h
After install libasan and libubsan, the feature-glibc is 1 and the build
process is success, so the cause is related with libasan or libubsan, we
should check them and print an error log to reflect the reality.
Auto-detecting system features:
... dwarf: [ OFF ]
... dwarf_getlocations: [ OFF ]
... glibc: [ OFF ]
... gtk2: [ OFF ]
... libbfd: [ OFF ]
... libcap: [ OFF ]
... libelf: [ OFF ]
... libnuma: [ OFF ]
... numa_num_possible_cpus: [ OFF ]
... libperl: [ OFF ]
... libpython: [ OFF ]
... libcrypto: [ OFF ]
... libunwind: [ OFF ]
... libdw-dwarf-unwind: [ OFF ]
... zlib: [ OFF ]
... lzma: [ OFF ]
... get_cpuid: [ OFF ]
... bpf: [ OFF ]
... libaio: [ OFF ]
... libzstd: [ OFF ]
... disassembler-four-args: [ OFF ]
Auto-detecting system features:
... dwarf: [ on ]
... dwarf_getlocations: [ on ]
... glibc: [ on ]
... gtk2: [ on ]
... libbfd: [ on ]
... libcap: [ on ]
... libelf: [ on ]
... libnuma: [ on ]
... numa_num_possible_cpus: [ on ]
... libperl: [ on ]
... libpython: [ on ]
... libcrypto: [ on ]
... libunwind: [ on ]
... libdw-dwarf-unwind: [ on ]
... zlib: [ on ]
... lzma: [ on ]
... get_cpuid: [ on ]
... bpf: [ on ]
... libaio: [ on ]
... libzstd: [ on ]
... disassembler-four-args: [ on ]
GEN /tmp/build/perf/common-cmds.h
CC /tmp/build/perf/exec-cmd.o
<SNIP>
INSTALL perf_completion-script
INSTALL perf-tip
make: Leaving directory '/home/acme/git/perf/tools/perf'
$ ldd ~/bin/perf | grep asan
$
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: tiezhu yang <yangtiezhu@loongson.cn> Cc: xuefeng li <lixuefeng@loongson.cn> Link: http://lore.kernel.org/lkml/1592445961-28044-1-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
projects / kernel.git / log