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- increase of maximum HID report size to 16KB in order to support
some of the modern devices, from Dean Camera
- control interface support for hidraw, from Dean Camera
- stylus battery reporting improvement, from Dmitry Torokhov
From Sandeep Singh.
AMD SFH (Sensor Fusion Hub) is HID based driver.SFH FW is part of MP2 processor
(MP2 which is an ARM core connected to x86 for processing sensor data) and it
runs on MP2 where in the driver resides on X86. The driver functionalities are
divided into three parts:
1: amd-mp2-pcie:- This part of the module will communicate with MP2
firmware. MP2 which is exposed as a PCI device to the
X86, uses mailboxes to talk to MP2 firmware to
send/receive commands.
2: Client Layer:- This part of the driver will use DRAM data and convert
the data into HID format based on HID reports.
3: Transport layer :- This part of the driver the will communicate with HID
core.Communication between devices and HID core is
mostly done via HID reports
In terms of architecture, it resembles like ISH (Intel Integrated Sensor Hub).
However the major difference is all the hid reports are generated as part of
the kernel driver.
AMD SFH is integrated as a part of SoC, starting from 17h family of processors.
The solution is working well on several OEM products. AMD SFH uses HID over
PCIe bus.
This device uses the SIPODEV SP1064 touchpad, which does not
supply descriptors, so it has to be added to the override list.
Cc: stable@vger.kernel.org
Signed-off-by: Julian Sax <jsbc@gmx.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Make the hid-ite driver handle the Acer S1002 keyboard-dock, this
leads to 2 improvements:
1. The non working wifi-toggle hotkey now works.
2. Toggling the touchpad on of with the hotkey will no show OSD
notifications in e.g. GNOME3. The actual toggling is handled inside
the keyboard, this adds support for notifying evdev listeners about this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit adds support for the Guitar Hero Live PS3 and Wii U dongles.
These dongles require a "magic" USB control message [1] to be sent
approximately every 10 seconds otherwise the dongle will not report
events where the strumbar is hit while a fret is being held.
Also, inspired by a patch sent on linux-input by Sanjay Govind [2], the
accelerometer is mapped to ABS_RY for tilt.
Interestingly, the Wii U and PS3 dongles share the same VID and PID.
[1] https://github.com/ghlre/GHLtarUtility/
[2] https://marc.info/?l=linux-input&m=157242835928542&w=2
Signed-off-by: Pascal Giard <pascal.giard@etsmtl.ca>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Currently the hidraw module can only read and write feature HID reports on
demand, via dedicated ioctls. Input reports are read from the device through
the read() interface, while output reports are written through the write
interface().
This is insufficient; it is desirable in many situations to be able to read and
write input and output reports through the control interface to cover
additional scenarios:
- Reading an input report by its report ID, to get initial state
- Writing an input report, to set initial input state in the device
- Reading an output report by its report ID, to obtain current state
- Writing an output report by its report ID, out of band
This patch adds these missing ioctl requests to read and write the remaining
HID report types. Note that not all HID backends will neccesarily support this
(e.g. while the USB link layer supports setting Input reports, others may not).
Also included are documentation and example updates. The current hidraw
documentation states that feature reports read from the device does *not*
include the report ID, however this is not the case and the returned report
will have its report ID prepended by conforming HID devices, as the report data
sent from the device over the control endpoint must be indentical in format to
those sent over the regular transport.
Signed-off-by: Dean Camera <dean@fourwalledcubicle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Currently the maximum HID report size which can be buffered by the kernel is
8KB. This is sufficient for the vast majority of HID devices on the market, as
most HID reports are fairly small.
However, some unusual devices such as the Elgate Stream Deck exist which use a
report size slightly over 8KB for the image data that is sent to the device.
Reports these large cannot be buffered by the regular HID subsystem currently,
thus the only way to use such device is to bypass the HID subsystem entirely.
This increases the maximum HID report size to 16KB, which should cover all
sanely designed HID devices.
Signed-off-by: Dean Camera <dean@fourwalledcubicle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Mayflash/Dragonrise seems to have yet another device ID for one of their
Gamecube controller adapters. Previous to this commit, the adapter
registered only one /dev/input/js* device, and all controller inputs (from
any controller) were mapped to this device. This patch defines the 1846
USB device ID and enables the HID_QUIRK_MULTI_INPUT quirk for it, which
fixes that (with the patch, four /dev/input/js* devices are created, one
for each of the four controller ports).
Signed-off-by: Ethan Warth <redyoshi49q@gmail.com>
Tested-by: Wladimir J. van der Laan <laanwj@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Enables three buttons (Fn1, Fn2, and Fn3) on the ELECOM M-XGL20DLBK
wireless mouse.
While this mouse is EX-G brand, report descriptor is a bit different
from EX-G trackball mouse. To enable extra buttons, report should be
rewritten in a similar way to trackballs, but with different position
parameters.
Signed-off-by: YOSHIOKA Takuma <lo48576@hard-wi.red>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The report descriptor for EX-G wireless mouse (M-XGL20DLBK) is a bit
different from that for trackball mice such as DEFT. For such mouse, the
current `mouse_button_fixup` cannot be used as is, because it uses
hard-coded indices for a report descriptor.
Add parameters to `mouse_button_fixup` function, in order to support
fixing report descriptors for more models.
Signed-off-by: YOSHIOKA Takuma <lo48576@hard-wi.red>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
These are never modified, so make them const to allow the compiler to put
them in read-only memory. It also allows the compiler to shrink the
resulting module with ~900 bytes, test-built with gcc 10.2 on x86_64.
text data bss dec hex filename
204377 42832 576 247785 3c7e9 drivers/hid/wacom_old.ko
204240 42064 576 246880 3c460 drivers/hid/wacom_new.ko
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a goto statement instead of letting the code fall
through to the next case.
Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple
of warnings by explicitly adding a couple of break statements instead
of letting the code fall through to the next case.
Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The Logitech V470 bluetooth mouse supports HID++-1.0 over bluetooth,
add its id to the hidpp driver so that it handles it.
This enables battery monitoring support.
Note this mouse does not support hi-resolution scroll-wheel events.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This assignment to rv is unused in an error path. So remove it.
Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The hid-sony driver has custom DS4 connect/disconnect logic for the
DS4 dongle, which is a USB dongle acting as a proxy to Bluetooth
connected DS4.
The connect/disconnect logic works fine generally, however not in
conjunction with Steam. Steam implements its own DS4 driver using
hidraw. Both hid-sony and Steam are issuing their own HID requests
and are racing each other during DS4 dongle connect/disconnect
resulting in a kernel crash in hid-sony.
The problem is that upon a DS4 connect to the dongle, hid-sony kicks
of 'ds4_get_calibration_data' from within its dongle hotplug code.
The calibration code issues raw HID feature report for reportID 0x02.
When Steam is running, it issues a feature report for reportID 0x12
typically just prior to hid-sony requesting feature reportID 0x02.
The result is that 'ds4_get_calibration_data' receives the data Steam
requested as that's the HID report returing first. Currently this
results in it processing invalid data, which ultimately results in a
divide by zero upon a future 'dualshock4_parse_report'.
The solution for now is to check within 'ds4_get_calibration_data' to
check if we received data for the feature report we issued and if not
retry. This fixes bug 206785.
Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The DS4 dongle reports fw_version and hw_version as 0 when no actual
DS4 is connected to it. This prevents cleaning up sysfs nodes upon
device remove.
This patch decouples sysfs cleanup from the fw_version and hw_version
values by introducing boolean values.
Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch moves the power supply status logic to DS3/DS4 parse_report,
to allow for more accurate DS4 status reporting.
The DS4 power status code was actually incorrect, but reported okay'ish
data in most cases. There was a different interpretation of the battery_info
values 0-10 or 0-9 depending on cable state. It added +1 to extend the range
to 0-10. This is actually incorrect, there is no different range. Values
higher than 11 actually indicates 'full' and 14/15 'error' for which we
reported 100% and a valid power state.
Moving the status logic to parse_report avoids having to pass more state
to the generic sony_battery_get_property and simplifies the code.
Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Pull HID fixes from Jiri Kosina:
- Various functionality / regression fixes for Logitech devices from
Hans de Goede
- Fix for (recently added) GPIO support in mcp2221 driver from Lars
Povlsen
- Power management handling fix/quirk in i2c-hid driver for certain
BIOSes that have strange aproach to power-cycle from Hans de Goede
- a few device ID additions and device-specific quirks
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: logitech-dj: Fix Dinovo Mini when paired with a MX5x00 receiver
HID: logitech-dj: Fix an error in mse_bluetooth_descriptor
HID: Add Logitech Dinovo Edge battery quirk
HID: logitech-hidpp: Add HIDPP_CONSUMER_VENDOR_KEYS quirk for the Dinovo Edge
HID: logitech-dj: Handle quad/bluetooth keyboards with a builtin trackpad
HID: add HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE for Gamevice devices
HID: mcp2221: Fix GPIO output handling
HID: hid-sensor-hub: Fix issue with devices with no report ID
HID: i2c-hid: Put ACPI enumerated devices in D3 on shutdown
HID: add support for Sega Saturn
HID: cypress: Support Varmilo Keyboards' media hotkeys
HID: ite: Replace ABS_MISC 120/121 events with touchpad on/off keypresses
HID: logitech-hidpp: Add PID for MX Anywhere 2
HID: uclogic: Add ID for Trust Flex Design Tablet
- Make the conditional update of the overutilized state work correctly by
caching the relevant flags state before overwriting them and checking
them afterwards.
- Fix a data race in the wakeup path which caused loadavg on ARM64
platforms to become a random number generator.
- Fix the ordering of the iowaiter accounting operations so it can't be
decremented before it is incremented.
- Fix a bug in the deadline scheduler vs. priority inheritance when a
non-deadline task A has inherited the parameters of a deadline task B
and then blocks on a non-deadline task C.
The second inheritance step used the static deadline parameters of task
A, which are usually 0, instead of further propagating task B's
parameters. The zero initialized parameters trigger a bug in the
deadline scheduler.
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Merge tag 'sched-urgent-2020-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"A couple of scheduler fixes:
- Make the conditional update of the overutilized state work
correctly by caching the relevant flags state before overwriting
them and checking them afterwards.
- Fix a data race in the wakeup path which caused loadavg on ARM64
platforms to become a random number generator.
- Fix the ordering of the iowaiter accounting operations so it can't
be decremented before it is incremented.
- Fix a bug in the deadline scheduler vs. priority inheritance when a
non-deadline task A has inherited the parameters of a deadline task
B and then blocks on a non-deadline task C.
The second inheritance step used the static deadline parameters of
task A, which are usually 0, instead of further propagating task
B's parameters. The zero initialized parameters trigger a bug in
the deadline scheduler"
* tag 'sched-urgent-2020-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Fix priority inheritance with multiple scheduling classes
sched: Fix rq->nr_iowait ordering
sched: Fix data-race in wakeup
sched/fair: Fix overutilized update in enqueue_task_fair()
attributes instead of device attributes and therefore making Clangs control
flow integrity checker upset.
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Merge tag 'perf-urgent-2020-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Thomas Gleixner:
"A single fix for the x86 perf sysfs interfaces which used kobject
attributes instead of device attributes and therefore making clang's
control flow integrity checker upset"
* tag 'perf-urgent-2020-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86: fix sysfs type mismatches
lock/unlock.
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Merge tag 'locking-urgent-2020-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Thomas Gleixner:
"A single fix for lockdep which makes the recursion protection cover
graph lock/unlock"
* tag 'locking-urgent-2020-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lockdep: Put graph lock/unlock under lock_recursion protection
- fix memory leak in efivarfs driver
- fix HYP mode issue in 32-bit ARM version of the EFI stub when built in
Thumb2 mode
- avoid leaking EFI pgd pages on allocation failure
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Merge tag 'efi-urgent-for-v5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Borislav Petkov:
"Forwarded EFI fixes from Ard Biesheuvel:
- fix memory leak in efivarfs driver
- fix HYP mode issue in 32-bit ARM version of the EFI stub when built
in Thumb2 mode
- avoid leaking EFI pgd pages on allocation failure"
* tag 'efi-urgent-for-v5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/x86: Free efi_pgd with free_pages()
efivarfs: fix memory leak in efivarfs_create()
efi/arm: set HSCTLR Thumb2 bit correctly for HVC calls from HYP
same because the proper one is going through the IOMMU tree. (Thomas Gleixner)
* An Intel microcode loader fix to save the correct microcode patch to
apply during resume. (Chen Yu)
* A fix to not access user memory of other processes when dumping opcode
bytes. (Thomas Gleixner)
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Merge tag 'x86_urgent_for_v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- An IOMMU VT-d build fix when CONFIG_PCI_ATS=n along with a revert of
same because the proper one is going through the IOMMU tree (Thomas
Gleixner)
- An Intel microcode loader fix to save the correct microcode patch to
apply during resume (Chen Yu)
- A fix to not access user memory of other processes when dumping
opcode bytes (Thomas Gleixner)
* tag 'x86_urgent_for_v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "iommu/vt-d: Take CONFIG_PCI_ATS into account"
x86/dumpstack: Do not try to access user space code of other tasks
x86/microcode/intel: Check patch signature before saving microcode for early loading
iommu/vt-d: Take CONFIG_PCI_ATS into account
Merge misc fixes from Andrew Morton:
"8 patches.
Subsystems affected by this patch series: mm (madvise, pagemap,
readahead, memcg, userfaultfd), kbuild, and vfs"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: fix madvise WILLNEED performance problem
libfs: fix error cast of negative value in simple_attr_write()
mm/userfaultfd: do not access vma->vm_mm after calling handle_userfault()
mm: memcg/slab: fix root memcg vmstats
mm: fix readahead_page_batch for retry entries
mm: fix phys_to_target_node() and memory_add_physaddr_to_nid() exports
compiler-clang: remove version check for BPF Tracing
mm/madvise: fix memory leak from process_madvise
Here are some small Staging and IIO driver fixes for 5.10-rc5. They
include:
- IIO fixes for reported regressions and problems
- new device ids for IIO drivers
- new device id for rtl8723bs driver
- staging ralink driver Kconfig dependency fix
- staging mt7621-pci bus resource fix
All of these have been in linux-next all week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO fixes from Greg KH:
"Here are some small Staging and IIO driver fixes for 5.10-rc5. They
include:
- IIO fixes for reported regressions and problems
- new device ids for IIO drivers
- new device id for rtl8723bs driver
- staging ralink driver Kconfig dependency fix
- staging mt7621-pci bus resource fix
All of these have been in linux-next all week with no reported issues"
* tag 'staging-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: accel: kxcjk1013: Add support for KIOX010A ACPI DSM for setting tablet-mode
iio: accel: kxcjk1013: Replace is_smo8500_device with an acpi_type enum
docs: ABI: testing: iio: stm32: remove re-introduced unsupported ABI
iio: light: fix kconfig dependency bug for VCNL4035
iio/adc: ingenic: Fix AUX/VBAT readings when touchscreen is used
iio/adc: ingenic: Fix battery VREF for JZ4770 SoC
staging: rtl8723bs: Add 024c:0627 to the list of SDIO device-ids
staging: ralink-gdma: fix kconfig dependency bug for DMA_RALINK
staging: mt7621-pci: avoid to request pci bus resources
iio: imu: st_lsm6dsx: set 10ms as min shub slave timeout
counter/ti-eqep: Fix regmap max_register
iio: adc: stm32-adc: fix a regression when using dma and irq
iio: adc: mediatek: fix unset field
iio: cros_ec: Use default frequencies when EC returns invalid information
Here are some small tty/serial fixes for 5.10-rc5 that resolve some
reported issues:
- speakup crash when telling the kernel to use a device that
isn't really there
- imx serial driver fixes for reported problems
- ar933x_uart driver fix for probe error handling path
All have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty fixes from Greg KH:
"Here are some small tty/serial fixes for 5.10-rc5 that resolve some
reported issues:
- speakup crash when telling the kernel to use a device that isn't
really there
- imx serial driver fixes for reported problems
- ar933x_uart driver fix for probe error handling path
All have been in linux-next for a while with no reported issues"
* tag 'tty-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: ar933x_uart: disable clk on error handling path in probe
tty: serial: imx: keep console clocks always on
speakup: Do not let the line discipline be used several times
tty: serial: imx: fix potential deadlock
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Merge tag 'ext4_for_linus_fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"A final set of miscellaneous bug fixes for ext4"
* tag 'ext4_for_linus_fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix bogus warning in ext4_update_dx_flag()
jbd2: fix kernel-doc markups
ext4: drop fast_commit from /proc/mounts
When doing a lookup in a directory, the afs filesystem uses a bulk
status fetch to speculatively retrieve the statuses of up to 48 other
vnodes found in the same directory and it will then either update extant
inodes or create new ones - effectively doing 'lookup ahead'.
To avoid the possibility of deadlocking itself, however, the filesystem
doesn't lock all of those inodes; rather just the directory inode is
locked (by the VFS).
When the operation completes, afs_inode_init_from_status() or
afs_apply_status() is called, depending on whether the inode already
exists, to commit the new status.
A case exists, however, where the speculative status fetch operation may
straddle a modification operation on one of those vnodes. What can then
happen is that the speculative bulk status RPC retrieves the old status,
and whilst that is happening, the modification happens - which returns
an updated status, then the modification status is committed, then we
attempt to commit the speculative status.
This results in something like the following being seen in dmesg:
kAFS: vnode modified {100058:861} 8->9 YFS.InlineBulkStatus
showing that for vnode 861 on volume 100058, we saw YFS.InlineBulkStatus
say that the vnode had data version 8 when we'd already recorded version
9 due to a local modification. This was causing the cache to be
invalidated for that vnode when it shouldn't have been. If it happens
on a data file, this might lead to local changes being lost.
Fix this by ignoring speculative status updates if the data version
doesn't match the expected value.
Note that it is possible to get a DV regression if a volume gets
restored from a backup - but we should get a callback break in such a
case that should trigger a recheck anyway. It might be worth checking
the volume creation time in the volsync info and, if a change is
observed in that (as would happen on a restore), invalidate all caches
associated with the volume.
Fixes: 5cf9dd55a0 ("afs: Prospectively look up extra files when doing a single lookup")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The calculation of the end page index was incorrect, leading to a
regression of 70% when running stress-ng.
With this fix, we instead see a performance improvement of 3%.
Fixes: e6e88712e4 ("mm: optimise madvise WILLNEED")
Reported-by: kernel test robot <rong.a.chen@intel.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Feng Tang <feng.tang@intel.com>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>
Link: https://lkml.kernel.org/r/20201109134851.29692-1-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The attr->set() receive a value of u64, but simple_strtoll() is used for
doing the conversion. It will lead to the error cast if user inputs a
negative value.
Use kstrtoull() instead of simple_strtoll() to convert a string got from
the user to an unsigned value. The former will return '-EINVAL' if it
gets a negetive value, but the latter can't handle the situation
correctly. Make 'val' unsigned long long as what kstrtoull() takes,
this will eliminate the compile warning on no 64-bit architectures.
Fixes: f7b88631a8 ("fs/libfs.c: fix simple_attr_write() on 32bit machines")
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Link: https://lkml.kernel.org/r/1605341356-11872-1-git-send-email-yangyicong@hisilicon.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexander reported a syzkaller / KASAN finding on s390, see below for
complete output.
In do_huge_pmd_anonymous_page(), the pre-allocated pagetable will be
freed in some cases. In the case of userfaultfd_missing(), this will
happen after calling handle_userfault(), which might have released the
mmap_lock. Therefore, the following pte_free(vma->vm_mm, pgtable) will
access an unstable vma->vm_mm, which could have been freed or re-used
already.
For all architectures other than s390 this will go w/o any negative
impact, because pte_free() simply frees the page and ignores the
passed-in mm. The implementation for SPARC32 would also access
mm->page_table_lock for pte_free(), but there is no THP support in
SPARC32, so the buggy code path will not be used there.
For s390, the mm->context.pgtable_list is being used to maintain the 2K
pagetable fragments, and operating on an already freed or even re-used
mm could result in various more or less subtle bugs due to list /
pagetable corruption.
Fix this by calling pte_free() before handle_userfault(), similar to how
it is already done in __do_huge_pmd_anonymous_page() for the WRITE /
non-huge_zero_page case.
Commit 6b251fc96c ("userfaultfd: call handle_userfault() for
userfaultfd_missing() faults") actually introduced both, the
do_huge_pmd_anonymous_page() and also __do_huge_pmd_anonymous_page()
changes wrt to calling handle_userfault(), but only in the latter case
it put the pte_free() before calling handle_userfault().
BUG: KASAN: use-after-free in do_huge_pmd_anonymous_page+0xcda/0xd90 mm/huge_memory.c:744
Read of size 8 at addr 00000000962d6988 by task syz-executor.0/9334
CPU: 1 PID: 9334 Comm: syz-executor.0 Not tainted 5.10.0-rc1-syzkaller-07083-g4c9720875573 #0
Hardware name: IBM 3906 M04 701 (KVM/Linux)
Call Trace:
do_huge_pmd_anonymous_page+0xcda/0xd90 mm/huge_memory.c:744
create_huge_pmd mm/memory.c:4256 [inline]
__handle_mm_fault+0xe6e/0x1068 mm/memory.c:4480
handle_mm_fault+0x288/0x748 mm/memory.c:4607
do_exception+0x394/0xae0 arch/s390/mm/fault.c:479
do_dat_exception+0x34/0x80 arch/s390/mm/fault.c:567
pgm_check_handler+0x1da/0x22c arch/s390/kernel/entry.S:706
copy_from_user_mvcos arch/s390/lib/uaccess.c:111 [inline]
raw_copy_from_user+0x3a/0x88 arch/s390/lib/uaccess.c:174
_copy_from_user+0x48/0xa8 lib/usercopy.c:16
copy_from_user include/linux/uaccess.h:192 [inline]
__do_sys_sigaltstack kernel/signal.c:4064 [inline]
__s390x_sys_sigaltstack+0xc8/0x240 kernel/signal.c:4060
system_call+0xe0/0x28c arch/s390/kernel/entry.S:415
Allocated by task 9334:
slab_alloc_node mm/slub.c:2891 [inline]
slab_alloc mm/slub.c:2899 [inline]
kmem_cache_alloc+0x118/0x348 mm/slub.c:2904
vm_area_dup+0x9c/0x2b8 kernel/fork.c:356
__split_vma+0xba/0x560 mm/mmap.c:2742
split_vma+0xca/0x108 mm/mmap.c:2800
mlock_fixup+0x4ae/0x600 mm/mlock.c:550
apply_vma_lock_flags+0x2c6/0x398 mm/mlock.c:619
do_mlock+0x1aa/0x718 mm/mlock.c:711
__do_sys_mlock2 mm/mlock.c:738 [inline]
__s390x_sys_mlock2+0x86/0xa8 mm/mlock.c:728
system_call+0xe0/0x28c arch/s390/kernel/entry.S:415
Freed by task 9333:
slab_free mm/slub.c:3142 [inline]
kmem_cache_free+0x7c/0x4b8 mm/slub.c:3158
__vma_adjust+0x7b2/0x2508 mm/mmap.c:960
vma_merge+0x87e/0xce0 mm/mmap.c:1209
userfaultfd_release+0x412/0x6b8 fs/userfaultfd.c:868
__fput+0x22c/0x7a8 fs/file_table.c:281
task_work_run+0x200/0x320 kernel/task_work.c:151
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
do_notify_resume+0x100/0x148 arch/s390/kernel/signal.c:538
system_call+0xe6/0x28c arch/s390/kernel/entry.S:416
The buggy address belongs to the object at 00000000962d6948 which belongs to the cache vm_area_struct of size 200
The buggy address is located 64 bytes inside of 200-byte region [00000000962d6948, 00000000962d6a10)
The buggy address belongs to the page: page:00000000313a09fe refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x962d6 flags: 0x3ffff00000000200(slab)
raw: 3ffff00000000200 000040000257e080 0000000c0000000c 000000008020ba00
raw: 0000000000000000 000f001e00000000 ffffffff00000001 0000000096959501
page dumped because: kasan: bad access detected
page->mem_cgroup:0000000096959501
Memory state around the buggy address:
00000000962d6880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000000962d6900: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb
>00000000962d6980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
00000000962d6a00: fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00
00000000962d6a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Fixes: 6b251fc96c ("userfaultfd: call handle_userfault() for userfaultfd_missing() faults")
Reported-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: <stable@vger.kernel.org> [4.3+]
Link: https://lkml.kernel.org/r/20201110190329.11920-1-gerald.schaefer@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If we reparent the slab objects to the root memcg, when we free the slab
object, we need to update the per-memcg vmstats to keep it correct for
the root memcg. Now this at least affects the vmstat of
NR_KERNEL_STACK_KB for !CONFIG_VMAP_STACK when the thread stack size is
smaller than the PAGE_SIZE.
David said:
"I assume that without this fix that the root memcg's vmstat would
always be inflated if we reparented"
Fixes: ec9f02384f ("mm: workingset: fix vmstat counters for shadow nodes")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Christopher Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yafang Shao <laoar.shao@gmail.com>
Cc: Chris Down <chris@chrisdown.name>
Cc: <stable@vger.kernel.org> [5.3+]
Link: https://lkml.kernel.org/r/20201110031015.15715-1-songmuchun@bytedance.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The core-mm has a default __weak implementation of phys_to_target_node()
to mirror the weak definition of memory_add_physaddr_to_nid(). That
symbol is exported for modules. However, while the export in
mm/memory_hotplug.c exported the symbol in the configuration cases of:
CONFIG_NUMA_KEEP_MEMINFO=y
CONFIG_MEMORY_HOTPLUG=y
...and:
CONFIG_NUMA_KEEP_MEMINFO=n
CONFIG_MEMORY_HOTPLUG=y
...it failed to export the symbol in the case of:
CONFIG_NUMA_KEEP_MEMINFO=y
CONFIG_MEMORY_HOTPLUG=n
Not only is that broken, but Christoph points out that the kernel should
not be exporting any __weak symbol, which means that
memory_add_physaddr_to_nid() example that phys_to_target_node() copied
is broken too.
Rework the definition of phys_to_target_node() and
memory_add_physaddr_to_nid() to not require weak symbols. Move to the
common arch override design-pattern of an asm header defining a symbol
to replace the default implementation.
The only common header that all memory_add_physaddr_to_nid() producing
architectures implement is asm/sparsemem.h. In fact, powerpc already
defines its memory_add_physaddr_to_nid() helper in sparsemem.h.
Double-down on that observation and define phys_to_target_node() where
necessary in asm/sparsemem.h. An alternate consideration that was
discarded was to put this override in asm/numa.h, but that entangles
with the definition of MAX_NUMNODES relative to the inclusion of
linux/nodemask.h, and requires powerpc to grow a new header.
The dependency on NUMA_KEEP_MEMINFO for DEV_DAX_HMEM_DEVICES is invalid
now that the symbol is properly exported / stubbed in all combinations
of CONFIG_NUMA_KEEP_MEMINFO and CONFIG_MEMORY_HOTPLUG.
[dan.j.williams@intel.com: v4]
Link: https://lkml.kernel.org/r/160461461867.1505359.5301571728749534585.stgit@dwillia2-desk3.amr.corp.intel.com
[dan.j.williams@intel.com: powerpc: fix create_section_mapping compile warning]
Link: https://lkml.kernel.org/r/160558386174.2948926.2740149041249041764.stgit@dwillia2-desk3.amr.corp.intel.com
Fixes: a035b6bf86 ("mm/memory_hotplug: introduce default phys_to_target_node() implementation")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lkml.kernel.org/r/160447639846.1133764.7044090803980177548.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
bpftrace parses the kernel headers and uses Clang under the hood.
Remove the version check when __BPF_TRACING__ is defined (as bpftrace
does) so that this tool can continue to parse kernel headers, even with
older clang sources.
Fixes: commit 1f7a44f63e ("compiler-clang: add build check for clang 10.0.1")
Reported-by: Chen Yu <yu.chen.surf@gmail.com>
Reported-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lkml.kernel.org/r/20201104191052.390657-1-ndesaulniers@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The early return in process_madvise() will produce a memory leak.
Fix it.
Fixes: ecb8ac8b1f ("mm/madvise: introduce process_madvise() syscall: an external memory hinting API")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20201116155132.GA3805951@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Fix various deficiencies in online fsck's metadata checking code.
- Fix an integer casting bug in the xattr code on 32-bit systems.
- Fix a hang in an inode walk when the inode index is corrupt.
- Fix error codes being dropped when initializing per-AG structures
- Fix nowait directio writes that partially succeed but return EAGAIN.
- Revert last week's rmap comparison patch because it was wrong.
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Merge tag 'xfs-5.10-fixes-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"The critical fixes are for a crash that someone reported in the xattr
code on 32-bit arm last week; and a revert of the rmap key comparison
change from last week as it was totally wrong. I need a vacation. :(
Summary:
- Fix various deficiencies in online fsck's metadata checking code
- Fix an integer casting bug in the xattr code on 32-bit systems
- Fix a hang in an inode walk when the inode index is corrupt
- Fix error codes being dropped when initializing per-AG structures
- Fix nowait directio writes that partially succeed but return EAGAIN
- Revert last week's rmap comparison patch because it was wrong"
* tag 'xfs-5.10-fixes-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: revert "xfs: fix rmap key and record comparison functions"
xfs: don't allow NOWAIT DIO across extent boundaries
xfs: return corresponding errcode if xfs_initialize_perag() fail
xfs: ensure inobt record walks always make forward progress
xfs: fix forkoff miscalculation related to XFS_LITINO(mp)
xfs: directory scrub should check the null bestfree entries too
xfs: strengthen rmap record flags checking
xfs: fix the minrecs logic when dealing with inode root child blocks
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Merge tag 'fsnotify_for_v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fanotify fix from Jan Kara:
"A single fanotify fix from Amir"
* tag 'fsnotify_for_v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fanotify: fix logic of reporting name info with watched parent
- Fix typos in seccomp selftests on powerpc and sh (Kees Cook)
- Fix PF_SUPERPRIV audit marking in seccomp and ptrace (Mickaël Salaün)
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Merge tag 'seccomp-v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp fixes from Kees Cook:
"This gets the seccomp selftests running again on powerpc and sh, and
fixes an audit reporting oversight noticed in both seccomp and ptrace.
- Fix typos in seccomp selftests on powerpc and sh (Kees Cook)
- Fix PF_SUPERPRIV audit marking in seccomp and ptrace (Mickaël
Salaün)"
* tag 'seccomp-v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
selftests/seccomp: sh: Fix register names
selftests/seccomp: powerpc: Fix typo in macro variable name
seccomp: Set PF_SUPERPRIV when checking capability
ptrace: Set PF_SUPERPRIV when checking capability
Fixes for two fairly obscure but annoying when triggered races in
iSCSI.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Fixes for two fairly obscure but annoying when triggered races in
iSCSI"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target: iscsi: Fix cmd abort fabric stop race
scsi: libiscsi: Fix NOP race condition
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Merge tag 'io_uring-5.10-2020-11-20' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"Mostly regression or stable fodder:
- Disallow async path resolution of /proc/self
- Tighten constraints for segmented async buffered reads
- Fix double completion for a retry error case
- Fix for fixed file life times (Pavel)"
* tag 'io_uring-5.10-2020-11-20' of git://git.kernel.dk/linux-block:
io_uring: order refnode recycling
io_uring: get an active ref_node from files_data
io_uring: don't double complete failed reissue request
mm: never attempt async page lock if we've transferred data already
io_uring: handle -EOPNOTSUPP on path resolution
proc: don't allow async path resolution of /proc/self components
