Rename `parport_pc_probe_port' to `__parport_pc_probe_port' and add a
`mode_mask' parameter so that callers can specify a mask of unsupported
modes to exclude even if mode probing seems to indicate otherwise. Add
a `parport_pc_probe_port' wrapper with an implicit mask of 0 for the
current callers to use.
No functional change at this point, but the configuration of data write
handlers is now no longer intertwined with determination and reporting
of available modes.
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20230108215656.6433-2-sudipm.mukherjee@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Complement commit 991214386d ("parport: remove unused dead code from
lowlevel drivers") and remove a stale piece of commented-out code that
refers to a function removed with said commit.
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20230108215656.6433-1-sudipm.mukherjee@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Simple Power-Managed bus controller may need functional clock(s)
to be enabled before child devices connected to the bus can be
accessed. Get the clock(s) as a bulk and enable/disable the
clock(s) when the bus is being power managed.
One example is that Freescale i.MX8qxp pixel link MSI bus controller
needs MSI clock and AHB clock to be enabled before accessing child
devices.
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Tested-by: Maxim Kochetkov <fido_max@inbox.ru>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20221226031417.1056745-1-victor.liu@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently if a process repeat repeatedly reads the dmi sysfs raw event log
/sys/firmware/dmi/entries/15-0/system_event_log/raw_event_log when GPNV
support is missing or using an unknown access method the kernel log gets
spammed with info messages. Make the messages rate limited to reduce the
message spamming. Triggered when running sudo stress-ng --sysfs -t 5m.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20221129223855.1005674-1-colin.i.king@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Triple Modular Redundancy(TMR) provides functional fault injection by
changing selected MicroBlaze instructions, which provides the possibility
to verify that the TMR subsystem error detection and fault recovery logic
is working properly.
Usage:
echo 1 > /sys/kernel/debug/xtmr_inject/inject_fault/inject_fault
Signed-off-by: Appana Durga Kedareswara rao <appana.durga.kedareswara.rao@amd.com>
Link: https://lore.kernel.org/r/20221125054113.122833-5-appana.durga.kedareswara.rao@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Triple Modular Redundancy(TMR) Inject core provides functional fault
injection by changing selected MicroBlaze instructions, which provides the
possibility to verify that the TMR subsystem error detection and fault
recovery logic is working properly.
Signed-off-by: Appana Durga Kedareswara rao <appana.durga.kedareswara.rao@amd.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221125054113.122833-4-appana.durga.kedareswara.rao@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Triple Modular Redundancy(TMR) subsystem contains three microblaze cores,
subsystem is fault-tolerant and continues to operate nominally after
encountering an error. Together with the capability to detect and recover
from errors, the implementation ensures the reliability of the entire
subsystem. TMR Manager is responsible for performing recovery of the
subsystem detects the fault via a break signal it invokes microblaze
software break handler which calls the tmr manager driver api to
update the error count and status, added support for fault detection
feature via sysfs interface.
Usage:
To know the break handler count(Error count):
cat /sys/devices/platform/amba_pl/44a10000.tmr_manager/errcnt
Signed-off-by: Appana Durga Kedareswara rao <appana.durga.kedareswara.rao@amd.com>
Link: https://lore.kernel.org/r/20221125054113.122833-3-appana.durga.kedareswara.rao@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Triple Modular Redundancy(TMR) subsystem contains three microblaze cores,
subsystem is fault-tolerant and continues to operate nominally after
encountering an error. Together with the capability to detect and recover
from errors, the implementation ensures the reliability of the entire
subsystem. TMR Manager is responsible for performing recovery of the
subsystem detects the fault via a break signal it invokes microblaze
software break handler which calls the tmr manager driver api to
update the error count and status.
Signed-off-by: Appana Durga Kedareswara rao <appana.durga.kedareswara.rao@amd.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221125054113.122833-2-appana.durga.kedareswara.rao@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL-terminated strings.
Signed-off-by: Bo Liu <liubo03@inspur.com>
Link: https://lore.kernel.org/r/20230118012944.2436-1-liubo03@inspur.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
GUID_INIT() is for internal guid_t type and shouldn't be used
for the uuid_le. I.o.w. relying on the implementation details
is layering violation. Use correct macros to initialize uuid_le.
Fixes: 64e9bbdd95 ("misc/mei/hdcp: Client driver for HDCP application")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20221228160500.21220-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
GUID_INIT() is for internal guid_t type and shouldn't be used
for the uuid_le. I.o.w. relying on the implementation details
is layering violation. Use correct macros to initialize uuid_le.
Fixes: c2004ce99e ("mei: pxp: export pavp client to me client bus")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20221228160558.21311-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We should use put_device() to release the reference.
Fixes: ee959b00c3 ("SCSI: convert struct class_device to struct device")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20221215090804.473022-1-linmq006@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For easier debugging, upon error, print also return values
from __mei_cl_recv() and __mei_cl_send() functions.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20221212214933.275434-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a spelling mistake in the module parameter description
for say_word_ctl and an extra space. Fix the spelling mistake and
remove the extraneous space.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Link: https://lore.kernel.org/r/20221207095202.2282567-1-colin.i.king@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If add device "stratix10-rsu" failed in stratix10_svc_drv_probe(),
the 'svc_fifo' and 'genpool' need be freed in the error path.
If allocate or add device "intel-fcs" failed in stratix10_svc_drv_probe(),
the device "stratix10-rsu" need be unregistered in the error path.
Fixes: e6281c2667 ("firmware: stratix10-svc: Add support for FCS")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Link: https://lore.kernel.org/r/20221129163602.462369-2-dinguyen@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In error path in stratix10_svc_drv_probe(), gen_pool_destroy() should be called
to destroy the memory pool that created by svc_create_memory_pool().
Fixes: 7ca5ce8965 ("firmware: add Intel Stratix10 service layer driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Link: https://lore.kernel.org/r/20221129163602.462369-1-dinguyen@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As comment of pci_get_class() says, it returns a pci_device with its
refcount increased and decreased the refcount for the input parameter
@from if it is not NULL.
If we break the loop in applicom_init() with 'dev' not NULL, we need to
call pci_dev_put() to decrease the refcount. Add the missing
pci_dev_put() to avoid refcount leak.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Link: https://lore.kernel.org/r/20221122114035.24194-1-wangxiongfeng2@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Define the device isolation strategy by the device driver. The
user configures a hardware error threshold value by uacce interface.
If the number of hardware errors exceeds the value of setting error
threshold in one hour. The device will not be available in user space.
The VF device use the PF device isolation strategy. All the hardware
errors are processed by PF driver.
Signed-off-by: Kai Ye <yekai13@huawei.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/20221119074817.12063-4-yekai13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update documentation describing sysfs node that could help to
configure hardware error threshold for users in the user space. And
describing sysfs node that could read the device isolated state.
Signed-off-by: Kai Ye <yekai13@huawei.com>
Link: https://lore.kernel.org/r/20221119074817.12063-3-yekai13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
UACCE adds the hardware error isolation feature. To improve service
reliability, some uacce devices that frequently encounter hardware
errors are isolated. Therefore, this feature is added.
Users can configure the hardware error threshold by 'isolate_strategy'
sysfs node. The user space can get the device isolated state by 'isolate'
sysfs node. If the number of device errors exceeds the configured error
threshold, the device will be isolated. It means the uacce device is
unavailable.
Signed-off-by: Kai Ye <yekai13@huawei.com>
Link: https://lore.kernel.org/r/20221119074817.12063-2-yekai13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It's common for drivers that share same physical components to also
duplicate source code (or at least portions of it). A good example is
both drivers/gpu/drm/amdgpu/* and drivers/gpu/drm/radeon/* have a header
file called atombios.h.
While their contents aren't the same, a lot of their structs have
the exact same names which makes navigating through the code base a bit
messy as cscope will show up 'references' across drivers which aren't
exactly correct.
Add IGNORE_DIRS variable, which specifies which directories
to be ignored from indexing.
Example:
make ARCH=x86 IGNORE_DIRS="drivers/gpu/drm/radeon tools" cscope
Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Reviewed-by: Vipin Sharma <vipinsh@google.com>
Link: https://lore.kernel.org/r/Y5jf59VCL/HAt60q@mail.google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A problem about idt_89hpesx create debugfs failed is triggered with the
following log given:
[ 4973.269647] debugfs: Directory 'idt_csr' with parent '/' already present!
The reason is that idt_init() returns i2c_add_driver() directly without
checking its return value, if i2c_add_driver() failed, it returns without
destroy the newly created debugfs, resulting the debugfs of idt_csr can
never be created later.
idt_init()
debugfs_create_dir() # create debugfs directory
i2c_add_driver()
driver_register()
bus_add_driver()
priv = kzalloc(...) # OOM happened
# return without destroy debugfs directory
Fix by removing debugfs when i2c_add_driver() returns error.
Fixes: cfad642538 ("eeprom: Add IDT 89HPESx EEPROM/CSR driver")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/20221110020030.47711-1-yuancan@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Comedi INSN_CONFIG instructions have different expected instructtion
data lengths depending on the type of configuration instruction
specified by the first word of data. This is checked by
`check_insn_config_length()`. There are a few configuration
instructions whose data lengths are not currently checked, usually for
rare configuration instructions that are implemented differently by
different drivers. For unknown configuration instructions, the function
logs a warning and accepts the specified data length.
The `INSN_CONFIG_GET_PWM_OUTPUT` configuration instruction length is not
currently checked, but all the places it is currently used expect a data
length of 3. (These places are `ni_get_pwm_config()` in
"ni_mio_common.c", and `pci1760_pwm_insn_config()` in "adv_pci1760.c".)
Make this length official by checking it in
`check_insn_config_length()`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20230103151127.19287-1-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bring the Comedi menu in line with most other device drivers
by using "menuconfig" instead of "config" for the top-level entry.
This also fixes a menu presentation issue with xconfig.
Fixes: ed9eccbe89 ("Staging: add comedi core")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: David Schleef <ds@schleef.org>
Cc: Shawn Bohrer <shawn.bohrer@gmail.com>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230110064844.18533-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Don't separate a function's kernel-doc comment and its definition with
macros or data; move the macro and data ahead of the function and its
comments to prevent a warning:
drivers/misc/genwqe/card_utils.c:162: warning: expecting prototype for genwqe_init_crc32(). Prototype was for CRC32_POLYNOMIAL() instead
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Frank Haverkamp <haver@linux.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230113063909.19694-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit be826ada52.
The function monitor_card() is a timer handler that runs in an
atomic context, but it calls usleep_range() that can sleep.
As a result, the sleep-in-atomic-context bugs will happen.
The process is shown below:
(atomic context)
monitor_card()
set_protocol()
usleep_range() //sleep
The origin commit c1986ee9be ("[PATCH] New Omnikey Cardman
4000 driver") works fine.
Fixes: be826ada52 ("char: pcmcia: cm4000_cs: Replace mdelay with usleep_range in set_protocol")
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Link: https://lore.kernel.org/r/20230118141000.5580-1-duoming@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove all kernel-doc "/**" markers; just use "/*" comments since
these are not in kernel-doc format.
This eliminates 11 kernel-doc warnings:
drivers/char/pcmcia/synclink_cs.c:487: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* line discipline callback wrappers
drivers/char/pcmcia/synclink_cs.c:3861: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by generic HDLC layer when protocol selected (PPP, frame relay, etc.)
drivers/char/pcmcia/synclink_cs.c:3914: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by generic HDLC layer to send frame
drivers/char/pcmcia/synclink_cs.c:3959: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by network layer when interface enabled
drivers/char/pcmcia/synclink_cs.c:4022: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by network layer when interface is disabled
drivers/char/pcmcia/synclink_cs.c:4053: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by network layer to process IOCTL call to network device
drivers/char/pcmcia/synclink_cs.c:4156: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by network layer when transmit timeout is detected
drivers/char/pcmcia/synclink_cs.c:4179: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by device driver when transmit completes
drivers/char/pcmcia/synclink_cs.c:4191: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by device driver when frame received
drivers/char/pcmcia/synclink_cs.c:4231: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by device driver when adding device instance
drivers/char/pcmcia/synclink_cs.c:4279: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* called by device driver when removing device instance
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230114034646.1535-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tell kconfig users what "MOST" means so that they can have a bit
of information about what it is. I.e., more than zero information.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Christian Gromm <christian.gromm@microchip.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230117182840.26890-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix various W=1 kernel-doc warnings in drivers/most/:
drivers/most/most_usb.c:669: warning: Excess function parameter 'data' description in 'link_stat_timer_handler'
drivers/most/most_usb.c:769: warning: cannot understand function prototype: 'const struct file_operations hdm_usb_fops = '
drivers/most/most_usb.c:776: warning: cannot understand function prototype: 'const struct usb_device_id usbid[] = '
drivers/most/most_cdev.c:301: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Initialization of struct file_operations
drivers/most/most_cdev.c:414: warning: Function parameter or member 'args' not described in 'comp_probe'
drivers/most/most_snd.c:56: warning: Function parameter or member 'pcm_hardware' not described in 'channel'
drivers/most/most_snd.c:56: warning: Function parameter or member 'copy_fn' not described in 'channel'
drivers/most/most_snd.c:404: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Initialization of struct snd_pcm_ops
drivers/most/most_snd.c:514: warning: Function parameter or member 'device_name' not described in 'audio_probe_channel'
drivers/most/most_snd.c:703: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Initialization of the struct most_component
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Christian Gromm <christian.gromm@microchip.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230113063947.23174-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Clean up kernel-doc notation, use correct function and parameter
names.
drivers/android/binderfs.c:236: warning: expecting prototype for binderfs_ctl_ioctl(). Prototype was for binder_ctl_ioctl() instead
drivers/android/binder.c:386: warning: expecting prototype for binder_node_unlock(). Prototype was for binder_node_inner_unlock() instead
drivers/android/binder.c:1206: warning: expecting prototype for binder_dec_ref(). Prototype was for binder_dec_ref_olocked() instead
drivers/andrond/binder.c:284: warning: Excess function parameter 'proc' description in 'binder_proc_unlock'
drivers/andrond/binder.c:387: warning: expecting prototype for binder_node_unlock(). Prototype was for binder_node_inner_unlock() instead
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Todd Kjos <tkjos@android.com>
Cc: Martijn Coenen <maco@android.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Christian Brauner <christian@brauner.io>
Cc: Carlos Llamas <cmllamas@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20230117183745.20842-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
An async transaction to a frozen process will still be successfully
put in the queue. But this pending async transaction won't be processed
until the target process is unfrozen at an unspecified time in the
future. Pass this important information back to the user space caller
by returning BR_TRANSACTION_PENDING_FROZEN.
Signed-off-by: Li Li <dualli@google.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20221123201654.589322-2-dualli@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In binder_ioctl function, the legitimacy check of cmd size has been
done in switch-case code:
switch (cmd) {
case BINDER_WRITE_READ;//BINDER_WRITE_READ contains size info
So unneeded do size check in binder_ioctl and binder_ioctl_write_read
again.
In the following version of Google GKI:
Linux version 5.10.110-android12-9-00011-g2c814f559132-ab8969555
It seems that the compiler has made optimization and has not passed
cmd parameters to binder_ioctl_write_read:
<binder_ioctl+628>: mov w8, #0x6201 // #25089
<binder_ioctl+632>: movk w8, #0xc030, lsl #16
<binder_ioctl+636>: cmp w20, w8
<binder_ioctl+640>: b.ne 0xffffffda8aa97880 <binder_ioctl+3168>
<binder_ioctl+644>: mov x0, x23 //filp
<binder_ioctl+648>: mov x1, x27 //arg
<binder_ioctl+652>: mov x2, x22 //thread
<binder_ioctl+656>: bl 0xffffffda8aa9e6e4 <binder_ioctl_write_read>
<binder_ioctl+660>: mov w26, w0
Signed-off-by: Jiazi.Li <jiazi.li@transsion.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20221115120351.2769-1-jiazi.li@transsion.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Fixes for two resctrl races when moving a task or creating a new monitoring
group
- Fix SEV-SNP guests running under HyperV where MTRRs are disabled to not return
a UC- type mapping type on memremap() and thus cause a serious slowdown
- Fix insn mnemonics in bioscall.S now that binutils is starting to fix
confusing insn suffixes
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Merge tag 'x86_urgent_for_v6.2_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Make sure the poking PGD is pinned for Xen PV as it requires it this
way
- Fixes for two resctrl races when moving a task or creating a new
monitoring group
- Fix SEV-SNP guests running under HyperV where MTRRs are disabled to
not return a UC- type mapping type on memremap() and thus cause a
serious slowdown
- Fix insn mnemonics in bioscall.S now that binutils is starting to fix
confusing insn suffixes
* tag 'x86_urgent_for_v6.2_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: fix poking_init() for Xen PV guests
x86/resctrl: Fix event counts regression in reused RMIDs
x86/resctrl: Fix task CLOSID/RMID update race
x86/pat: Fix pat_x_mtrr_type() for MTRR disabled case
x86/boot: Avoid using Intel mnemonics in AT&T syntax asm
- Fix a memory leak in highbank's probing function
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Merge tag 'edac_urgent_for_v6.2_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fixes from Borislav Petkov:
- Fix the EDAC device's confusion in the polling setting units
- Fix a memory leak in highbank's probing function
* tag 'edac_urgent_for_v6.2_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/highbank: Fix memory leak in highbank_mc_probe()
EDAC/device: Fix period calculation in edac_device_reset_delay_period()
- Fix a build failure with some versions of ld that have an odd version string.
- Fix incorrect use of mutex in the IMC PMU driver.
Thanks to: Kajol Jain, Michael Petlan, Ojaswin Mujoo, Peter Zijlstra, Yang Yingliang.
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Merge tag 'powerpc-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix a build failure with some versions of ld that have an odd version
string
- Fix incorrect use of mutex in the IMC PMU driver
Thanks to Kajol Jain, Michael Petlan, Ojaswin Mujoo, Peter Zijlstra, and
Yang Yingliang.
* tag 'powerpc-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s/hash: Make stress_hpt_timer_fn() static
powerpc/imc-pmu: Fix use of mutex in IRQs disabled section
powerpc/boot: Fix incorrect version calculation issue in ld_version
If CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, memblock_free_pages()
only releases pages to the buddy allocator if they are not in the
deferred range. This is correct for free pages (as defined by
for_each_free_mem_pfn_range_in_zone()) because free pages in the
deferred range will be initialized and released as part of the deferred
init process. memblock_free_pages() is called by memblock_free_late(),
which is used to free reserved ranges after memblock_free_all() has
run. All pages in reserved ranges have been initialized at that point,
and accordingly, those pages are not touched by the deferred init
process. This means that currently, if the pages that
memblock_free_late() intends to release are in the deferred range, they
will never be released to the buddy allocator. They will forever be
reserved.
In addition, memblock_free_pages() calls kmsan_memblock_free_pages(),
which is also correct for free pages but is not correct for reserved
pages. KMSAN metadata for reserved pages is initialized by
kmsan_init_shadow(), which runs shortly before memblock_free_all().
For both of these reasons, memblock_free_pages() should only be called
for free pages, and memblock_free_late() should call __free_pages_core()
directly instead.
One case where this issue can occur in the wild is EFI boot on
x86_64. The x86 EFI code reserves all EFI boot services memory ranges
via memblock_reserve() and frees them later via memblock_free_late()
(efi_reserve_boot_services() and efi_free_boot_services(),
respectively). If any of those ranges happens to fall within the
deferred init range, the pages will not be released and that memory will
be unavailable.
For example, on an Amazon EC2 t3.micro VM (1 GB) booting via EFI:
v6.2-rc2:
Node 0, zone DMA
spanned 4095
present 3999
managed 3840
Node 0, zone DMA32
spanned 246652
present 245868
managed 178867
v6.2-rc2 + patch:
Node 0, zone DMA
spanned 4095
present 3999
managed 3840
Node 0, zone DMA32
spanned 246652
present 245868
managed 222816 # +43,949 pages
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Merge tag 'fixes-2023-01-14' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock fix from Mike Rapoport:
"memblock: always release pages to the buddy allocator in
memblock_free_late()
If CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, memblock_free_pages()
only releases pages to the buddy allocator if they are not in the
deferred range. This is correct for free pages (as defined by
for_each_free_mem_pfn_range_in_zone()) because free pages in the
deferred range will be initialized and released as part of the
deferred init process.
memblock_free_pages() is called by memblock_free_late(), which is used
to free reserved ranges after memblock_free_all() has run. All pages
in reserved ranges have been initialized at that point, and
accordingly, those pages are not touched by the deferred init process.
This means that currently, if the pages that memblock_free_late()
intends to release are in the deferred range, they will never be
released to the buddy allocator. They will forever be reserved.
In addition, memblock_free_pages() calls kmsan_memblock_free_pages(),
which is also correct for free pages but is not correct for reserved
pages. KMSAN metadata for reserved pages is initialized by
kmsan_init_shadow(), which runs shortly before memblock_free_all().
For both of these reasons, memblock_free_pages() should only be called
for free pages, and memblock_free_late() should call
__free_pages_core() directly instead.
One case where this issue can occur in the wild is EFI boot on x86_64.
The x86 EFI code reserves all EFI boot services memory ranges via
memblock_reserve() and frees them later via memblock_free_late()
(efi_reserve_boot_services() and efi_free_boot_services(),
respectively).
If any of those ranges happens to fall within the deferred init range,
the pages will not be released and that memory will be unavailable.
For example, on an Amazon EC2 t3.micro VM (1 GB) booting via EFI:
v6.2-rc2:
Node 0, zone DMA
spanned 4095
present 3999
managed 3840
Node 0, zone DMA32
spanned 246652
present 245868
managed 178867
v6.2-rc2 + patch:
Node 0, zone DMA
spanned 4095
present 3999
managed 3840
Node 0, zone DMA32
spanned 246652
present 245868
managed 222816 # +43,949 pages"
* tag 'fixes-2023-01-14' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
mm: Always release pages to the buddy allocator in memblock_free_late().
Just one fix for modules by Nick.
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Merge tag 'modules-6.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull module fix from Luis Chamberlain:
"Just one fix for modules by Nick"
* tag 'modules-6.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
kallsyms: Fix scheduling with interrupts disabled in self-test
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Merge tag '6.2-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
- memory leak and double free fix
- two symlink fixes
- minor cleanup fix
- two smb1 fixes
* tag '6.2-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Fix uninitialized memory read for smb311 posix symlink create
cifs: fix potential memory leaks in session setup
cifs: do not query ifaces on smb1 mounts
cifs: fix double free on failed kerberos auth
cifs: remove redundant assignment to the variable match
cifs: fix file info setting in cifs_open_file()
cifs: fix file info setting in cifs_query_path_info()
Two minor fixes in the hisi_sas driver which only impact enterprise
style multi-expander and shared disk situations and no core changes.
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:
"Two minor fixes in the hisi_sas driver which only impact enterprise
style multi-expander and shared disk situations and no core changes"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: hisi_sas: Set a port invalid only if there are no devices attached when refreshing port id
scsi: hisi_sas: Use abort task set to reset SAS disks when discovered
A single fix for rc4 to prevent building the pata_cs5535 driver with
user mode linux as it uses msr operations that are not defined with UML.
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Merge tag 'ata-6.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ATA fix from Damien Le Moal:
"A single fix to prevent building the pata_cs5535 driver with user mode
linux as it uses msr operations that are not defined with UML"
* tag 'ata-6.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: pata_cs5535: Don't build on UML
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Merge tag 'block-6.2-2023-01-13' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
"Nothing major in here, just a collection of NVMe fixes and dropping a
wrong might_sleep() that static checkers tripped over but which isn't
valid"
* tag 'block-6.2-2023-01-13' of git://git.kernel.dk/linux:
MAINTAINERS: stop nvme matching for nvmem files
nvme: don't allow unprivileged passthrough on partitions
nvme: replace the "bool vec" arguments with flags in the ioctl path
nvme: remove __nvme_ioctl
nvme-pci: fix error handling in nvme_pci_enable()
nvme-pci: add NVME_QUIRK_IDENTIFY_CNS quirk to Apple T2 controllers
nvme-apple: add NVME_QUIRK_IDENTIFY_CNS quirk to fix regression
block: Drop spurious might_sleep() from blk_put_queue()
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Merge tag 'io_uring-6.2-2023-01-13' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
"A fix for a regression that happened last week, rest is fixes that
will be headed to stable as well. In detail:
- Fix for a regression added with the leak fix from last week (me)
- In writing a test case for that leak, inadvertently discovered a
case where we a poll request can race. So fix that up and mark it
for stable, and also ensure that fdinfo covers both the poll tables
that we have. The latter was an oversight when the split poll table
were added (me)
- Fix for a lockdep reported issue with IOPOLL (Pavel)"
* tag 'io_uring-6.2-2023-01-13' of git://git.kernel.dk/linux:
io_uring: lock overflowing for IOPOLL
io_uring/poll: attempt request issue after racy poll wakeup
io_uring/fdinfo: include locked hash table in fdinfo output
io_uring/poll: add hash if ready poll request can't complete inline
io_uring/io-wq: only free worker if it was allocated for creation
