Cache management software needs an id for each instance of a cache of
a particular type.
The current cacheinfo structure does not provide any information about
the underlying hardware so there is no way to expose it.
Hardware with cache management features provides means (cpuid, enumeration
etc.) to retrieve the hardware id of a particular cache instance. Cache
instances which share hardware have the same hardware id.
Add an 'id' field to struct cacheinfo to store this information. Expose
this information under the /sys/devices/system/cpu/cpu*/cache/index*/
directory as well.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Cc: "Ravi V Shankar" <ravi.v.shankar@intel.com>
Cc: "Tony Luck" <tony.luck@intel.com>
Cc: "David Carrillo-Cisneros" <davidcc@google.com>
Cc: "Sai Prakhya" <sai.praneeth.prakhya@intel.com>
Cc: "Peter Zijlstra" <peterz@infradead.org>
Cc: "Stephane Eranian" <eranian@google.com>
Cc: "Dave Hansen" <dave.hansen@intel.com>
Cc: "Shaohua Li" <shli@fb.com>
Cc: "Nilay Vaish" <nilayvaish@gmail.com>
Cc: "Vikas Shivappa" <vikas.shivappa@linux.intel.com>
Cc: "Ingo Molnar" <mingo@elte.hu>
Cc: "Borislav Petkov" <bp@suse.de>
Cc: "H. Peter Anvin" <h.peter.anvin@intel.com>
Link: http://lkml.kernel.org/r/1477142405-32078-3-git-send-email-fenghua.yu@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Pull crypto fix from Herbert Xu:
"This fixes a regression caused by the stack vmalloc change"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
hwrng: core - Don't use a stack buffer in add_early_randomness()
of fixes for the uniphier clk driver that was introduced recently, as well as
Kconfig option hiding, module autoloading markings, and a few fixes for clk_hw
based registration patches that went in this merge window.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"This is the first batch of clk driver fixes for this release.
We have a handful of fixes for the uniphier clk driver that was
introduced recently, as well as Kconfig option hiding, module
autoloading markings, and a few fixes for clk_hw based registration
patches that went in this merge window"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: at91: Fix a return value in case of error
clk: uniphier: rename MIO clock to SD clock for Pro5, PXs2, LD20 SoCs
clk: uniphier: fix memory overrun bug
clk: hi6220: use CLK_OF_DECLARE_DRIVER for sysctrl and mediactrl clock init
clk: mvebu: armada-37xx-periph: Fix the clock gate flag
clk: bcm2835: Clamp the PLL's requested rate to the hardware limits.
clk: max77686: fix number of clocks setup for clk_hw based registration
clk: mvebu: armada-37xx-periph: Fix the clock provider registration
clk: core: add __init decoration for CLK_OF_DECLARE_DRIVER function
clk: mediatek: Add hardware dependency
clk: samsung: clk-exynos-audss: Fix module autoload
clk: uniphier: fix type of variable passed to regmap_read()
clk: uniphier: add system clock support for sLD3 SoC
- Fix up off-by one and line offset validation, info leak to
userspace, and reject invalid flags. Those are especially
valuable hardening patches from Lars-Peter Clausen, all tagged
for stable.
- Fix module autoload for TS4800 and ATH79.
- Correct the IRQ handler for MPC8xxx to use handle_level_irq()
as it (A) reacts to edges not levels and (B) even implements
.irq_ack(). We were missing IRQs here.
- Fix the error path for acpi_dev_gpio_irq_get()
- Fix a memory leak in the MXS driver.
- Fix an annoying typo in the STMPE driver.
- Put a dependency on sysfs to the mockup driver.
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Merge tag 'gpio-v4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Here is a set of GPIO fixes for the v4.9 kernel series:
- Fix up off-by one and line offset validation, info leak to
userspace, and reject invalid flags. Those are especially valuable
hardening patches from Lars-Peter Clausen, all tagged for stable.
- Fix module autoload for TS4800 and ATH79.
- Correct the IRQ handler for MPC8xxx to use handle_level_irq() as it
(a) reacts to edges not levels and (b) even implements .irq_ack().
We were missing IRQs here.
- Fix the error path for acpi_dev_gpio_irq_get()
- Fix a memory leak in the MXS driver.
- Fix an annoying typo in the STMPE driver.
- Put a dependency on sysfs to the mockup driver"
* tag 'gpio-v4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: mpc8xxx: Correct irq handler function
gpio: ath79: Fix module autoload
gpio: ts4800: Fix module autoload
gpio: GPIO_GET_LINEEVENT_IOCTL: Reject invalid line and event flags
gpio: GPIO_GET_LINEHANDLE_IOCTL: Reject invalid line flags
gpio: GPIOHANDLE_GET_LINE_VALUES_IOCTL: Fix information leak
gpio: GPIO_GET_LINEEVENT_IOCTL: Validate line offset
gpio: GPIOHANDLE_GET_LINE_VALUES_IOCTL: Fix information leak
gpio: GPIO_GET_LINEHANDLE_IOCTL: Validate line offset
gpio: GPIO_GET_CHIPINFO_IOCTL: Fix information leak
gpio: GPIO_GET_CHIPINFO_IOCTL: Fix line offset validation
gpio / ACPI: fix returned error from acpi_dev_gpio_irq_get()
gpio: mockup: add sysfs dependency
gpio: stmpe: || vs && typo
gpio: mxs: Unmap region obtained by of_iomap
gpio/board.txt: point to gpiod_set_value
- Advertise control feature flags in xenstore.
- Fix x86 build when XEN_PVHVM is disabled.
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Merge tag 'for-linus-4.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from David Vrabel:
- advertise control feature flags in xenstore
- fix x86 build when XEN_PVHVM is disabled
* tag 'for-linus-4.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xenbus: check return value of xenbus_scanf()
xenbus: prefer list_for_each()
x86: xen: move cpu_up functions out of ifdef
xenbus: advertise control feature flags
Don't ignore errors here: Set backend state to unknown when
unsuccessful.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
This is more efficient than list_for_each_safe() when list modification
is accompanied by breaking out of the loop.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
The Xen docs specify several flags which a guest can set to advertise
which values of the xenstore control/shutdown key it will recognize.
This patch adds code to write all the relevant feature-flag keys.
Based-on-patch-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
From the beginning of the gpio-mpc8xxx.c, the "handle_level_irq"
has being used to handle GPIO interrupts in the PowerPC/Layerscape
platforms. But actually, almost all PowerPC/Layerscape platforms
assert an interrupt request upon either a high-to-low change or
any change on the state of the signal.
So the "handle_level_irq" is not reasonable for PowerPC/Layerscape
GPIO interrupt, it should be "handle_edge_irq". Otherwise the system
may lost some interrupts from the PIN's state changes.
Signed-off-by: Liu Gang <Gang.Liu@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
- Fallout from the merge window, refactoring UBI code introduced some issues.
- Fixes for an UBIFS readdir bug which can cause getdents() to busy loop
for ever and a bug in the UBIFS xattr code.
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Merge tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs
Pull UBI[FS] fixes from Richard Weinberger:
"This contains fixes for issues in both UBI and UBIFS:
- Fallout from the merge window, refactoring UBI code introduced some
issues.
- Fixes for an UBIFS readdir bug which can cause getdents() to busy
loop for ever and a bug in the UBIFS xattr code"
* tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs:
ubifs: Abort readdir upon error
UBI: Fix crash in try_recover_peb()
ubi: fix swapped arguments to call to ubi_alloc_aeb
ubifs: Fix xattr_names length in exit paths
ubifs: Rename ubifs_rename2
Pull SCSI target fixes from Nicholas Bellinger:
"Here are the outstanding target-pending fixes for v4.9-rc2.
This includes:
- Fix v4.1.y+ reference leak regression with concurrent TMR
ABORT_TASK + session shutdown. (Vaibhav Tandon)
- Enable tcm_fc w/ SCF_USE_CPUID to avoid host exchange timeouts
(Hannes)
- target/user error sense handling fixes. (Andy + MNC + HCH)
- Fix iscsi-target NOP_OUT error path iscsi_cmd descriptor leak
(Varun)
- Two EXTENDED_COPY SCSI status fixes for ESX VAAI (Dinesh Israni +
Nixon Vincent)
- Revert a v4.8 residual overflow change, that breaks sg_inq with
small allocation lengths.
There are a number of folks stress testing the v4.1.y regression fix
in their environments, and more folks doing iser-target I/O stress
testing atop recent v4.x.y code.
There is also one v4.2.y+ RCU conversion regression related to
explicit NodeACL configfs changes, that is still being tracked down"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target/tcm_fc: use CPU affinity for responses
target/tcm_fc: Update debugging statements to match libfc usage
target/tcm_fc: return detailed error in ft_sess_create()
target/tcm_fc: print command pointer in debug message
target: fix potential race window in target_sess_cmd_list_waiting()
Revert "target: Fix residual overflow handling in target_complete_cmd_with_length"
target: Don't override EXTENDED_COPY xcopy_pt_cmd SCSI status code
target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE
target: Re-add missing SCF_ACK_KREF assignment in v4.1.y
iscsi-target: fix iscsi cmd leak
iscsi-target: fix spelling mistake "Unsolicitied" -> "Unsolicited"
target/user: Fix comments to not refer to data ring
target/user: Return an error if cmd data size is too large
target/user: Use sense_reason_t in tcmu_queue_cmd_ring
I was on vacation during the merge window (a long vacation)
but this is a bug fix that should go in and a new driver that shouldn't
hurt anything.
This has been in linux-next for a month or so.
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Merge tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi
Pull IPMI updates from Corey Minyard:
"A small bug fix and a new driver for acting as an IPMI device.
I was on vacation during the merge window (a long vacation) but this
is a bug fix that should go in and a new driver that shouldn't hurt
anything.
This has been in linux-next for a month or so"
* tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
ipmi: fix crash on reading version from proc after unregisted bmc
ipmi/bt-bmc: remove redundant return value check of platform_get_resource()
ipmi/bt-bmc: add a dependency on ARCH_ASPEED
ipmi: Fix ioremap error handling in bt-bmc
ipmi: add an Aspeed BT IPMI BMC driver
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/gpio/gpio-ath79.ko | grep alias
$
After this patch:
$ modinfo drivers/gpio/gpio-ath79.ko | grep alias
alias: of:N*T*Cqca,ar9340-gpioC*
alias: of:N*T*Cqca,ar9340-gpio
alias: of:N*T*Cqca,ar7100-gpioC*
alias: of:N*T*Cqca,ar7100-gpio
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Aban Bedel <albeu@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Pull timer updates from Thomas Gleixner:
"This updates contains:
- A revert which addresses a boot failure on ARM Sun5i platforms
- A new clocksource driver, which has been delayed beyond rc1 due to
an interrupt driver issue which was unearthed by this driver. The
debugging of that issue and the discussion about the proper
solution made this driver miss the merge window. There is no point
in delaying it for a full cycle as it completes the basic mainline
support for the new JCore platform and does not create any risk
outside of that platform"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init"
clocksource: Add J-Core timer/clocksource driver
of: Add J-Core timer bindings
Pull irq fixes from Ingo Molnar:
"Mostly irqchip driver fixes, plus a symbol export"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kernel/irq: Export irq_set_parent()
irqchip/gic: Add missing \n to CPU IF adjustment message
irqchip/jcore: Don't show Kconfig menu item for driver
irqchip/eznps: Drop pointless static qualifier in nps400_of_init()
irqchip/gic-v3-its: Fix entry size mask for GITS_BASER
irqchip/gic-v3-its: Fix 64bit GIC{R,ITS}_TYPER accesses
Pull EFI fixes from Ingo Molnar:
"Add Ard Biesheuvel as EFI co-maintainer, plus fix an ARM build bug
with older toolchains"
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/arm: Fix absolute relocation detection for older toolchains
MAINTAINERS: Add myself as EFI maintainer
Fixes marked for stable:
- Prevent unlikely crash in copro_calculate_slb() (Frederic Barrat)
- cxl: Prevent adapter reset if an active context exists (Vaibhav Jain)
Fixes for code merged this cycle:
- Fix boot on systems with uncompressed kernel image (Heiner Kallweit)
- Drop dump_numa_memory_topology() (Michael Ellerman)
- Fix numa topology console print (Aneesh Kumar K.V)
- Ignore the pkey system calls for now (Stephen Rothwell)
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Merge tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fixes marked for stable:
- Prevent unlikely crash in copro_calculate_slb() (Frederic Barrat)
- cxl: Prevent adapter reset if an active context exists (Vaibhav Jain)
Fixes for code merged this cycle:
- Fix boot on systems with uncompressed kernel image (Heiner Kallweit)
- Drop dump_numa_memory_topology() (Michael Ellerman)
- Fix numa topology console print (Aneesh Kumar K.V)
- Ignore the pkey system calls for now (Stephen Rothwell)"
* tag 'powerpc-4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Ignore the pkey system calls for now
powerpc: Fix numa topology console print
powerpc/mm: Drop dump_numa_memory_topology()
cxl: Prevent adapter reset if an active context exists
powerpc/boot: Fix boot on systems with uncompressed kernel image
powerpc/mm: Prevent unlikely crash in copro_calculate_slb()
Specifics:
- Update the ACPI WDAT-based watchdog driver to ping the hardware
during system resume to prevent a reset from occurring after the
resume is complete (Mika Westerberg).
- Fix the return value of the pcc_mbox_request_channel() stub for
CONFIG_PCC unset (Hoan Tran).
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Merge tag 'acpi-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix an issue related to system resume in the new WDAT-based
watchdog driver and a return value of a stub function in the ACPI CPPC
framework.
Specifics:
- Update the ACPI WDAT-based watchdog driver to ping the hardware
during system resume to prevent a reset from occurring after the
resume is complete (Mika Westerberg).
- Fix the return value of the pcc_mbox_request_channel() stub for
CONFIG_PCC unset (Hoan Tran)"
* tag 'acpi-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
watchdog: wdat_wdt: Ping the watchdog on resume
mailbox: PCC: Fix return value of pcc_mbox_request_channel()
- Fix for 32bit accesses that should be 64bit on 64bit machines
- Fix for a field decoding macro
- Beautify a warning message
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Merge tag 'gic-fixes-for-4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull GIC updates from Marc Zyngier:
- Fix for 32bit accesses that should be 64bit on 64bit machines
- Fix for a field decoding macro
- Beautify a warning message
Five small fixes. Some of these, like the nested spinlock overwriting saved
flags and the Kasan use after free look serious, but they seem not to have
been picked up in testing or seen in the field. The biggest user visible
issue is probably the wrong device handler for Clariion, which means that alua
doesn't bind to the array like it should.
Signed-off-by: James Bottomley <jejb@linux.vnet.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:
"Five small fixes.
Some of these, like the nested spinlock overwriting saved flags and
the Kasan use after free look serious, but they seem not to have been
picked up in testing or seen in the field.
The biggest user visible issue is probably the wrong device handler
for Clariion, which means that alua doesn't bind to the array like it
should"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ipr: Fix async error WARN_ON
scsi: zfcp: spin_lock_irqsave() is not nestable
scsi: Remove one useless stack variable
scsi: Fix use-after-free
scsi: Replace wrong device handler name for CLARiiON arrays
Pull block fixes from Jens Axboe:
"A set of fixes that missed the merge window, mostly due to me being
away around that time.
Nothing major here, a mix of nvme cleanups and fixes, and one fix for
the badblocks handling"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvmet: use symbolic constants for CNS values
nvme: use symbolic constants for CNS values
nvme.h: add an enum for cns values
nvme.h: don't use uuid_be
nvme.h: resync with nvme-cli
nvme: Add tertiary number to NVME_VS
nvme : Add sysfs entry for NVMe CMBs when appropriate
nvme: don't schedule multiple resets
nvme: Delete created IO queues on reset
nvme: Stop probing a removed device
badblocks: fix overlapping check for clearing
Although I am leaving Synopsys, I would like to keep working with the linux
kernel community and help in what you might find useful. For that I am
sending this patch to change my contact e-mail.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/gpio/gpio-ts4800.ko | grep alias
$
After this patch:
$ modinfo drivers/gpio/gpio-ts4800.ko | grep alias
alias: of:N*T*Ctechnologic,ts4800-gpioC*
alias: of:N*T*Ctechnologic,ts4800-gpio
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The GPIO_GET_LINEEVENT_IOCTL currently ignores unknown or undefined
linehandle and lineevent flags. From a backwards and forwards compatibility
viewpoint it is highly desirable to reject unknown flags though.
On one hand an application that is using newer flags and is running on
an older kernel has no way to detect if the new flags were handled
correctly if they are silently discarded.
On the other hand an application that (accidentally) passes undefined flags
will run fine on an older kernel, but may break on a newer kernel when
these flags get defined.
Ensure that requests that have undefined flags set are rejected with an
error, rather than silently discarding the undefined flags.
Cc: stable@vger.kernel.org
Fixes: 61f922db72 ("gpio: userspace ABI for reading GPIO line events")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The GPIO_GET_LINEHANDLE_IOCTL currently ignores unknown or undefined
linehandle flags. From a backwards and forwards compatibility viewpoint it
is highly desirable to reject unknown flags though.
On one hand an application that is using newer flags and is running on
an older kernel has no way to detect if the new flags were handled
correctly if they are silently discarded.
On the other hand an application that (accidentally) passes undefined flags
will run fine on an older kernel, but may break on a newer kernel when
these flags get defined.
Ensure that requests that have undefined flags set are rejected with an
error, rather than silently discarding the undefined flags.
Cc: stable@vger.kernel.org
Fixes: d7c51b47ac ("gpio: userspace ABI for reading/writing GPIO lines")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The GPIOHANDLE_GET_LINE_VALUES_IOCTL handler allocates a gpiohandle_data
struct on the stack and then passes it to copy_to_user(). But depending on
the number of requested line handles the struct is only partially
initialized.
This exposes the previous, potentially sensitive, stack content to the
issuing userspace application. To avoid this make sure that the struct is
fully initialized.
Cc: stable@vger.kernel.org
Fixes: d7c51b47ac ("gpio: userspace ABI for reading/writing GPIO lines")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The line offset that is used as an index into the descs array is provided
by userspace and might go beyond the bounds of the array. If that happens
undefined behavior will occur.
Make sure that the offset is within the bounds of the desc array and reject
any requests that specify a value outside of it.
Cc: stable@vger.kernel.org
Fixes: 61f922db72 ("gpio: userspace ABI for reading GPIO line events")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The GPIOHANDLE_GET_LINE_VALUES_IOCTL handler allocates a gpiohandle_data
struct on the stack and then passes it to copy_to_user(). But only the
first element of the values array in the struct is set, which leaves the
struct partially initialized.
This exposes the previous, potentially sensitive, stack content to the
issuing userspace application. To avoid this make sure that the struct is
fully initialized.
Cc: stable@vger.kernel.org
Fixes: 61f922db72 ("gpio: userspace ABI for reading GPIO line events")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The line offset that is used as an index into the descs array is provided
by userspace and might go beyond the bounds of the array. If that happens
undefined behavior will occur.
Make sure that the offset is within the bounds of the desc array and reject
any requests that specify a value outside of it.
Cc: stable@vger.kernel.org
Fixes: d7c51b47ac ("gpio: userspace ABI for reading/writing GPIO lines")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The GPIO_GET_CHIPINFO_IOCTL handler allocates a gpiochip_info struct on the
stack and then passes it to copy_to_user(). But depending on the length of
the GPIO chip name and label the struct is only partially initialized.
This exposes the previous, potentially sensitive, stack content to the
issuing userspace application. To avoid this make sure that the struct is
fully initialized.
Cc: stable@vger.kernel.org
Fixes: 521a2ad6f8 ("gpio: add userspace ABI for GPIO line information")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The current line offset validation is off by one. Depending on the data
stored behind the descs array this can either cause undefined behavior or
disclose arbitrary, potentially sensitive, memory to the issuing userspace
application.
Make sure that offset is within the bounds of the desc array.
Cc: stable@vger.kernel.org
Fixes: 521a2ad6f8 ("gpio: add userspace ABI for GPIO line information")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The libfc stack assigns exchange IDs based on the CPU the request
was received on, so we need to send the responses via the same CPU.
Otherwise the send logic gets confuses and responses will be delayed,
causing exchange timeouts on the initiator side.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Cc: stable@vger.kernel.org # 4.5+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Update the debug statements to match those from libfc.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Not every failure is due to out-of-memory; the ACLs might not be
set, too. So return a detailed error code in ft_sess_create()
instead of just a NULL pointer.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
When allocating a new command we should add the pointer to the
debug statements; that allows us to match this with other debug
statements for handling data.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
target_sess_cmd_list_waiting() might hit on a condition where
the kref for the command is already 0, but the destructor has
not been called yet (or is stuck in waiting for a spin lock).
Rather than leaving the command on the list we should explicitly
remove it to avoid race issues later on.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2 more patches to stabilize the new MMUv2 support.
* 'drm-etnaviv-fixes' of git://git.pengutronix.de/lst/linux:
drm/etnaviv: block 64K of address space behind each cmdstream
drm/etnaviv: ensure write caches are flushed at end of user cmdstream
vmwgfx cleanups and fixes.
* 'drm-vmwgfx-fixes' of ssh://people.freedesktop.org/~syeh/repos_linux:
drm/vmwgfx: Adjust checks for null pointers in 13 functions
drm/vmwgfx: Use memdup_user() rather than duplicating its implementation
drm/vmwgfx: Use kmalloc_array() in vmw_surface_define_ioctl()
drm/vmwgfx: Avoid validating views on view destruction
drm/vmwgfx: Limit the user-space command buffer size
drm/vmwgfx: Remove a leftover debug printout
drm/vmwgfx: Allow resource relocations on byte boundaries
drm/vmwgfx: Enable SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER command
drm/vmwgfx: Remove call to reservation_object_test_signaled_rcu before wait
drm/vmwgfx: Replace numeric parameter like 0444 with macro
One small fix for Armada, where the clock prepare/enable counts were
going awry.
* 'drm-armada-fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
drm/armada: fix clock counts
This are some fixes which I hoped to still get into v4.9. I used to
test them here since about 2 weeks and Meng came around to test it
on the second platform making use of this IP too, so they are well
tested now.
* 'fixes-for-v4.9-rc2' of http://git.agner.ch/git/linux-drm-fsl-dcu:
drm/fsl-dcu: enable pixel clock when enabling CRTC
drm/fsl-dcu: do not transfer registers in mode_set_nofb
drm/fsl-dcu: do not transfer registers on plane init
drm/fsl-dcu: enable TCON bypass mode by default
If 'clk_hw_register()' fails, it is likely that we expect to return an
error instead of a valid pointer (which would mean success).
Fix commit f5644f10dc ("clk: at91: Migrate to clk_hw based registration
and OF APIs")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
It turns out we need to ping the watchdog hardware on resume when we
re-program it. Otherwise this causes inadvertent reset to trigger
right after the resume is complete.
Fixes: 058dfc7670 (ACPI / watchdog: Add support for WDAT hardware watchdog)
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
struct clocksource is also used by the clk notifier callback, to
unregister and re-register the clocksource with a different clock rate.
clocksource_mmio_init does not pass back a pointer to the struct used,
and the clk notifier callback assumes that the struct clocksource in
struct sun5i_timer_clksrc is valid. This results in a kernel NULL
pointer dereference when the hstimer clock is changed:
Unable to handle kernel NULL pointer dereference at virtual address 00000004
[<c03a4678>] (clocksource_unbind) from [<c03a46d4>] (clocksource_unregister+0x2c/0x44)
[<c03a46d4>] (clocksource_unregister) from [<c0a6f350>] (sun5i_rate_cb_clksrc+0x34/0x3c)
[<c0a6f350>] (sun5i_rate_cb_clksrc) from [<c035ea50>] (notifier_call_chain+0x44/0x84)
[<c035ea50>] (notifier_call_chain) from [<c035edc0>] (__srcu_notifier_call_chain+0x44/0x60)
[<c035edc0>] (__srcu_notifier_call_chain) from [<c035edf4>] (srcu_notifier_call_chain+0x18/0x20)
[<c035edf4>] (srcu_notifier_call_chain) from [<c0670174>] (__clk_notify+0x70/0x7c)
[<c0670174>] (__clk_notify) from [<c06702c0>] (clk_propagate_rate_change+0xa4/0xc4)
[<c06702c0>] (clk_propagate_rate_change) from [<c0670288>] (clk_propagate_rate_change+0x6c/0xc4)
Revert the commit for now. clocksource_mmio_init can be made to pass back
a pointer, but the code churn and usage of an inner struct might not be
worth it.
Fixes: 157dfadef8 ("clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init")
Reported-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Cc: linux-sunxi@googlegroups.com
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20161018054918.26855-1-wens@csie.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
At the hardware level, the J-Core PIT is integrated with the interrupt
controller, but it is represented as its own device and has an
independent programming interface. It provides a 12-bit countdown
timer, which is not presently used, and a periodic timer. The interval
length for the latter is programmable via a 32-bit throttle register
whose units are determined by a bus-period register. The periodic
timer is used to implement both periodic and oneshot clock event
modes; in oneshot mode the interrupt handler simply disables the timer
as soon as it fires.
Despite its device tree node representing an interrupt for the PIT,
the actual irq generated is programmable, not hard-wired. The driver
is responsible for programming the PIT to generate the hardware irq
number that the DT assigns to it.
On SMP configurations, J-Core provides cpu-local instances of the PIT;
no broadcast timer is needed. This driver supports the creation of the
necessary per-cpu clock_event_device instances.
A nanosecond-resolution clocksource is provided using the J-Core "RTC"
registers, which give a 64-bit seconds count and 32-bit nanoseconds
that wrap every second. The driver converts these to a full-range
32-bit nanoseconds count.
Signed-off-by: Rich Felker <dalias@libc.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Link: http://lkml.kernel.org/r/b591ff12cc5ebf63d1edc98da26046f95a233814.1476393790.git.dalias@libc.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
- Fix ACPI boot due to recent broken NUMA changes
- Fix remote enabling of CPU features requiring PSTATE bit manipulation
- Add address range check when emulating user cache maintenance
- Fix LL/SC loops that allow compiler to introduce memory accesses
- Fix recently added write_sysreg_s macro
- Ensure MDCR_EL2 is initialised on qemu targets without a PMU
- Avoid kaslr breakage due to MODVERSIONs and DYNAMIC_FTRACE
- Correctly drive recent ld when building relocatable Image
- Remove junk IS_ERR check from xgene PMU driver added during merge window
- pr_cont fixes after core changes in the merge window
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Most of these are CC'd for stable, but there are a few fixing issues
introduced during the recent merge window too.
There's also a fix for the xgene PMU driver, but it seemed daft to
send as a separate pull request, so I've included it here with the
rest of the fixes.
- Fix ACPI boot due to recent broken NUMA changes
- Fix remote enabling of CPU features requiring PSTATE bit manipulation
- Add address range check when emulating user cache maintenance
- Fix LL/SC loops that allow compiler to introduce memory accesses
- Fix recently added write_sysreg_s macro
- Ensure MDCR_EL2 is initialised on qemu targets without a PMU
- Avoid kaslr breakage due to MODVERSIONs and DYNAMIC_FTRACE
- Correctly drive recent ld when building relocatable Image
- Remove junk IS_ERR check from xgene PMU driver added during merge window
- pr_cont fixes after core changes in the merge window"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: remove pr_cont abuse from mem_init
arm64: fix show_regs fallout from KERN_CONT changes
arm64: kernel: force ET_DYN ELF type for CONFIG_RELOCATABLE=y
arm64: suspend: Reconfigure PSTATE after resume from idle
arm64: mm: Set PSTATE.PAN from the cpu_enable_pan() call
arm64: cpufeature: Schedule enable() calls instead of calling them via IPI
arm64: Cortex-A53 errata workaround: check for kernel addresses
arm64: percpu: rewrite ll/sc loops in assembly
arm64: swp emulation: bound LL/SC retries before rescheduling
arm64: sysreg: Fix use of XZR in write_sysreg_s
arm64: kaslr: keep modules close to the kernel when DYNAMIC_FTRACE=y
arm64: kernel: Init MDCR_EL2 even in the absence of a PMU
perf: xgene: Remove bogus IS_ERR() check
arm64: kernel: numa: fix ACPI boot cpu numa node mapping
arm64: kaslr: fix breakage with CONFIG_MODVERSIONS=y
Nikolay's error path patch is tagged for stable, everything else but
readdir vs frags race was introduced in 4.9-rc1.
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Merge tag 'ceph-for-4.9-rc2' of git://github.com/ceph/ceph-client
Pull Ceph fixes from Ilya Dryomov:
"An rbd exclusive-lock edge case fix and several filesystem fixups.
Nikolay's error path patch is tagged for stable, everything else but
readdir vs frags race was introduced in this merge window"
* tag 'ceph-for-4.9-rc2' of git://github.com/ceph/ceph-client:
ceph: fix non static symbol warning
ceph: fix uninitialized dentry pointer in ceph_real_mount()
ceph: fix readdir vs fragmentation race
ceph: fix error handling in ceph_read_iter
rbd: don't retry watch reregistration if header object is gone
rbd: don't wait for the lock forever if blacklisted
- Update MAINTAINERS as the mmc tree moved to kernel.org
- A few fixes for HS400es mode
- A few other minor fixes
MMC host:
- sdhci: Fix an issue when dealing with stop commands
- sdhci-pci: Fix a bus power failure issue
- sdhci-esdhc-imx: Correct two register accesses
- sdhci-of-arasan: Fix the 1.8V I/O signal switch behaviour
- rtsx_usb_sdmmc: Fix runtime PM issues
Other: (Because of no maintainer)
- memstick: rtsx_usb_ms: Fix runtime PM issues
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Merge tag 'mmc-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"Here are some mmc fixes intended for v4.9 rc2.
This time I have also included a few changes for a memstick driver
which has a corresponding mmc driver. They use the same USB device as
parent, hence both needs to play nice with runtime PM, which they
didn't.
MMC core:
- Update MAINTAINERS as the mmc tree moved to kernel.org
- A few fixes for HS400es mode
- A few other minor fixes
MMC host:
- sdhci: Fix an issue when dealing with stop commands
- sdhci-pci: Fix a bus power failure issue
- sdhci-esdhc-imx: Correct two register accesses
- sdhci-of-arasan: Fix the 1.8V I/O signal switch behaviour
- rtsx_usb_sdmmc: Fix runtime PM issues
Other: (Because of no maintainer)
- memstick: rtsx_usb_ms: Fix runtime PM issues"
* tag 'mmc-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
MAINTAINERS: mmc: Move the mmc tree to kernel.org
memstick: rtsx_usb_ms: Manage runtime PM when accessing the device
memstick: rtsx_usb_ms: Runtime resume the device when polling for cards
mmc: rtsx_usb_sdmmc: Handle runtime PM while changing the led
mmc: rtsx_usb_sdmmc: Avoid keeping the device runtime resumed when unused
mmc: sdhci: cast unsigned int to unsigned long long to avoid unexpeted error
mmc: sdhci-esdhc-imx: Correct two register accesses
mmc: sdhci-pci: Fix bus power failing to enable for some Intel controllers
mmc: sdhci-pci: Let devices define their own sdhci_ops
mmc: sdhci: Rename sdhci_set_power() to sdhci_set_power_noreg()
mmc: sdhci: Fix SDHCI_QUIRK2_STOP_WITH_TC
mmc: core: Annotate cmd_hdr as __le32
mmc: sdhci-of-arasan: add sdhci_arasan_voltage_switch for arasan, 5.1
mmc: core: changes frequency to hs_max_dtr when selecting hs400es
mmc: core: switch to 1V8 or 1V2 for hs400es mode
mmc: block: add missing header dependencies
mmc: sdhci-of-arasan: Fix non static symbol warning
