syzbot report [1] describes a deadlock when write operation against an
ashmem fd executed at the time when ashmem is shrinking its cache results
in the following lock sequence:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(fs_reclaim);
lock(&sb->s_type->i_mutex_key#13);
lock(fs_reclaim);
lock(&sb->s_type->i_mutex_key#13);
kswapd takes fs_reclaim and then inode_lock while generic_perform_write
takes inode_lock and then fs_reclaim. However ashmem does not support
writing into backing shmem with a write syscall. The only way to change
its content is to mmap it and operate on mapped memory. Therefore the race
that lockdep is warning about is not valid. Resolve this by introducing a
separate lockdep class for the backing shmem inodes.
[1]: https://lkml.kernel.org/lkml/0000000000000b5f9d059aa2037f@google.com/
Reported-by: syzbot+7a0d9d0b26efefe61780@syzkaller.appspotmail.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Link: https://lore.kernel.org/r/20200730192632.3088194-1-surenb@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Inside function ql_get_dump comment statement had a repition of word
"to" which I removed and checkpatch.pl ouputs zero error or warnings
now.
Signed-off-by: Dhiraj Sharma <dhiraj.sharma0024@gmail.com>
Link: https://lore.kernel.org/r/20200728182610.2538-1-dhiraj.sharma0024@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make use of the flex_array_size() helper to calculate the size of a
flexible array member within an enclosing structure.
This helper offers defense-in-depth against potential integer
overflows, while at the same time makes it explicitly clear that
we are dealing with a flexible array member.
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20200729233557.GA17693@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes the warning reported for missing prototypes due to
missing header file. Also, it includes changes to remove
unused_but_set_variables.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Link: https://lore.kernel.org/r/6341df9b0b5985047af0bbbc8e136481ac515b25.1594290158.git.vaibhav.sr@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently you can't enable the Gey Bus Audio Codec because there is no
entry for it in the Kconfig file. Originally the config name was going
to be AUDIO_MSM8994 but that's not correct because other types of
hardware are supported now. I have chosen the name AUDIO_APB_CODEC
instead. Also I had to update the dependencies for GREYBUS_AUDIO to
make the compile work.
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/2b50959ccffe5a4372880d27e79ef3be1873372c.1594290158.git.vaibhav.sr@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greybus Codec driver allows modules to be dynamically added and removed,
which further requires updating the DAPM configurations as well.
With current snd_soc architecture, dynamic audio modules is not yet
supported. This patch provides helper APIs to update DAPM configurations
in response to modules which are dynamically added or removed. The
source is primarily based on snd_dapm.c
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/35e1baaae10a3f2162e71be4c2f75a701584f0e6.1594290158.git.vaibhav.sr@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Due to dependencies on ASoC framework changes, GB dummy codec module
compilation is currently disabled. This patch updates codec driver as
per the latest ASoC APIs.
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/dd66a960fca186da055600fe1e622b7a814cb543.1594290158.git.vaibhav.sr@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As per the current implementation for GB codec driver, a jack list is
maintained for each module. And it expects the list to be populated by
the snd_soc_jack structure which would require modifications in
mainstream code.
However, this is not a necessary requirement and the list can be easily
maintained within gbaudio_module_info as well. This patch provides the
relevant changes for the same.
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/4ee030af7a8e203f89a6e513313e36f4e2991e5b.1594290158.git.vaibhav.sr@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
snd_soc_jack APIs are modified in recent kernel versions. This patch
updates the codec driver to resolve the compilation errors related to
jack framework.
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/896b8e24d990f2bca5aafaebd26e37095042951e.1594290158.git.vaibhav.sr@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Drivers using legacy power management .suspen()/.resume() callbacks
have to manage PCI states and device's PM states themselves. They also
need to take care of standard configuration registers.
Switch to generic power management framework using a single
"struct dev_pm_ops" variable to take the unnecessary load from the driver.
This also avoids the need for the driver to directly call most of the PCI
helper functions and device power state control functions, as through
the generic framework PCI Core takes care of the necessary operations,
and drivers are required to do only device-specific jobs.
Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Link: https://lore.kernel.org/r/20200728123349.1331679-1-vaibhavgupta40@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Removed braces for a 'if' condition as it contain only single line &
there is no need for braces for such case according to coding style
rules.
Signed-off-by: Ankit Baluni <b18007@students.iitmandi.ac.in>
Link: https://lore.kernel.org/r/20200729074541.1972-1-b18007@students.iitmandi.ac.in
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The variable ret is being assigned an error return value that is never
read, the control passes to a return statement and ret is never referenced.
Remove the redundant assignment. Also remove an empty line.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200729100525.573500-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The variable authmode can be uninitialized. The danger would be if
it equals to _WPA_IE_ID_ (0xdd) or _WPA2_IE_ID_ (0x33). We can avoid
this by setting it to zero instead. This is the approach that was
used in the rtl8723bs driver.
Fixes: 7b464c9fa5 ("staging: r8188eu: Add files for new driver - part 4")
Co-developed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200728072153.9202-1-dinghao.liu@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thanks to Okash's latest work, the TODO list is essentially empty, so
the way out from staging now seems open.
The status of the remaining issue mentioned in TODO is not clear, we
asked the speakup user mailing list for reproducer cases, but didn't get
a really specific scenario. One serious bug was fixed by 9d32c0cde4
("staging/speakup: fix get_word non-space look-ahead"), which does not
seem to really be related to the bug mentioned in TODO. Possibly the bug
mentioned in TODO has been fixed long ago and people have been thinking
that it was not because they can not distinguish the symptoms mentioned
in TODO from the symptoms of the bug fixed by 9d32c0cde4.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Link: https://lore.kernel.org/r/20200726165452.qhos3wrjcm6jmcmx@function
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rtw_aes_decrypt, rtw_tkip_decrypt, rtw_wep_decrypt, rtw_aes_encrypt,
rtw_tkip_encrypt, rtw_wep_encrypt are takes (u8 *) second argiment and
always uses it as (struct recv_frame *) or (struct xmit_frame *).
This is causes a lot of unnecessary type casts
and complicates refactoring.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Link: https://lore.kernel.org/r/20200726210246.68633-1-insafonov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This makes the driver use the irqchip template to assign
properties to the gpio_irq_chip instead of using the
explicit calls to gpiochip_irqchip_add(). The irqchip is
instead added while adding the gpiochip.
Cc: Nishad Kamdar <nishadkamdar@gmail.com>
Cc: Johan Hovold <johan@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200722074414.48457-1-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If we fail to queue the buffer then it can never be dequeued. This can
lead to a forever loop in stop_streaming() when we wait for everything
to finish.
Fixes: 70ec64ccda ("staging: bcm2835-camera: Ensure all buffers are returned on disable")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200722130651.GC220681@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 5.8-rc7 into staging-next
We need the staging fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- do not use non-portable strsep() in a host program
- fix single target builds for external modules
- change Clang's --prefix option to make it work for the latest Clang
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Merge tag 'kbuild-fixes-v5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild into master
Pull Kbuild fixes from Masahiro Yamada:
- do not use non-portable strsep() in a host program
- fix single target builds for external modules
- change Clang's --prefix option to make it work for the latest Clang
* tag 'kbuild-fixes-v5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
Makefile: Fix GCC_TOOLCHAIN_DIR prefix for Clang cross compilation
kbuild: fix single target builds for external modules
modpost: remove use of non-standard strsep() in HOSTCC code
Pull parisc fixes from Helge Deller:
"Two fixes:
- Add the cmpxchg() function for pointers to u8 values. This fixes a
kernel linking error when building the tusb1210 driver (from Liam
Beguin).
- Add a define for atomic64_set_release() to fix CPU soft lockups
which happen because of missing unlocks while processing bit
operations (from John David Anglin)"
* 'parisc-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Add atomic64_set_release() define to avoid CPU soft lockups
parisc: add support for cmpxchg on u8 pointers
Here are a few small driver fixes for 5.8-rc7
They include:
- habanalabs fixes
- tiny fpga driver fixes
- /dev/mem fixup from previous changes
- interconnect driver fixes
- binder fix
All of these 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 'char-misc-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc into master
Pull char/misc driver fixes from Greg KH:
"Here are a few small driver fixes for 5.8-rc7
They include:
- habanalabs fixes
- tiny fpga driver fixes
- /dev/mem fixup from previous changes
- interconnect driver fixes
- binder fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
interconnect: msm8916: Fix buswidth of pcnoc_s nodes
interconnect: Do not skip aggregation for disabled paths
/dev/mem: Add missing memory barriers for devmem_inode
binder: Don't use mmput() from shrinker function.
habanalabs: prevent possible out-of-bounds array access
fpga: dfl: fix bug in port reset handshake
fpga: dfl: pci: reduce the scope of variable 'ret'
habanalabs: set 4s timeout for message to device CPU
habanalabs: set clock gating per engine
habanalabs: block WREG_BULK packet on PDMA
Here is a single driver core fix for 5.8-rc7. It resolves a problem
found in the previous fix for this code made in 5.8-rc6. Hopefully this
is all now cleared up, as this seems to be the last of the reported
issues in this area, and was tested on the problem hardware.
This patch has been in linux-next with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core into master
Pull driver core fix from Greg KH:
"A single driver core fix for 5.8-rc7. It resolves a problem found in
the previous fix for this code made in 5.8-rc6. Hopefully this is all
now cleared up, as this seems to be the last of the reported issues in
this area, and was tested on the problem hardware.
This patch has been in linux-next with no reported problems"
* tag 'driver-core-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
device property: Avoid NULL pointer dereference in device_get_next_child_node()
Here are 5 small staging driver fixes for 5.8-rc7 to resolve some
reported problems:
- 4 comedi driver fixes for problems found with them
- a syzbot-found fix for the wlang-ng driver that resolves a
much reported problem.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging into master
Pull staging driver fixes from Greg KH:
"Five small staging driver fixes for 5.8-rc7 to resolve some reported
problems:
- four comedi driver fixes for problems found with them
- a syzbot-found fix for the wlang-ng driver that resolves a much
reported problem.
All of these have been in linux-next with no reported issues"
* tag 'staging-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: wlan-ng: properly check endpoint types
staging: comedi: addi_apci_1564: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: addi_apci_1500: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: addi_apci_1032: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: ni_6527: fix INSN_CONFIG_DIGITAL_TRIG support
Here are some small tty and serial and fbcon fixes for 5.8-rc7 to
resolve some reported issues.
The fbcon fix is in here as it was simpler to take it this way (and it
was acked by the maintainer) as it was related to the vt console fix as
well, both of which resolve syzbot-found issues in the console handling
code.
The other serial driver fixes are for small issues reported in the -rc
releases.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty into master
Pull tty/serial/fbcon fixes from Greg KH:
"Here are some small tty and serial and fbcon fixes for 5.8-rc7 to
resolve some reported issues.
The fbcon fix is in here as it was simpler to take it this way (and it
was acked by the maintainer) as it was related to the vt console fix
as well, both of which resolve syzbot-found issues in the console
handling code.
The other serial driver fixes are for small issues reported in the -rc
releases.
All of these have been in linux-next with no reported issues"
* tag 'tty-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: exar: Fix GPIO configuration for Sealevel cards based on XR17V35X
fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins.
serial: 8250_mtk: Fix high-speed baud rates clamping
serial: 8250: fix null-ptr-deref in serial8250_start_tx()
serial: tegra: drop bogus NULL tty-port checks
serial: tegra: fix CREAD handling for PIO
tty: xilinx_uartps: Really fix id assignment
vt: Reject zero-sized screen buffer size.
Here are 3 small USB XHCI driver fixes for 5.8-rc7.
They all resolve some minor issues that have been reported on some
different platforms.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb into master
Pull USB fixes from Greg KH:
"Three small USB XHCI driver fixes for 5.8-rc7.
They all resolve some minor issues that have been reported on some
different platforms.
All of these have been in linux-next with no reported issues"
* tag 'usb-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: tegra: Fix allocation for the FPCI context
usb: xhci: Fix ASM2142/ASM3142 DMA addressing
usb: xhci-mtk: fix the failure of bandwidth allocation
Small core patch to fix a corner case bug: we forgot to run the queues
to handle starvation in the error exit from the scsi_queue_rq routine,
which can lead to hangs on error conditions.
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 into master
Pull SCSI fix from James Bottomley:
"Small core patch to fix a corner case bug: we forgot to run the queues
to handle starvation in the error exit from the scsi_queue_rq routine,
which can lead to hangs on error conditions"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: core: Run queue in case of I/O resource contention failure
I have a few more fixes this week:
* A fix to avoid using SBI calls during kasan initialization, as the SBI calls
themselves have not been probed yet.
* Three fixes related to systems with multiple memory regions.
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Merge tag 'riscv-for-linus-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux into master
Pull RISC-V fixes from Palmer Dabbelt:
"A few more fixes this week:
- A fix to avoid using SBI calls during kasan initialization, as the
SBI calls themselves have not been probed yet.
- Three fixes related to systems with multiple memory regions"
* tag 'riscv-for-linus-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Parse all memory blocks to remove unusable memory
RISC-V: Do not rely on initrd_start/end computed during early dt parsing
RISC-V: Set maximum number of mapped pages correctly
riscv: kasan: use local_tlb_flush_all() to avoid uninitialized __sbi_rfence
- Fix a section end page alignment assumption that was causing crashes
- Fix ORC unwinding on freshly forked tasks which haven't executed yet
and which have empty user task stacks
- Fix the debug.exception-trace=1 sysctl dumping of user stacks, which
was broken by recent maccess changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
- Fix a section end page alignment assumption that was causing
crashes
- Fix ORC unwinding on freshly forked tasks which haven't executed
yet and which have empty user task stacks
- Fix the debug.exception-trace=1 sysctl dumping of user stacks,
which was broken by recent maccess changes"
* tag 'x86-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/dumpstack: Dump user space code correctly again
x86/stacktrace: Fix reliable check for empty user task stacks
x86/unwind/orc: Fix ORC for newly forked tasks
x86, vmlinux.lds: Page-align end of ..page_aligned sections
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull timer fix from Ingo Molnar:
"Fix a suspend/resume regression (crash) on TI AM3/AM4 SoC's"
* tag 'timers-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/timer-ti-dm: Fix suspend and resume for am3 and am4
