According to the Linux kernel ABI documentation for 'scaling_setspeed':
"It returns the last frequency requested by the governor (in kHz) or
can be written to in order to set a new frequency for the policy."
However, the current implementation of show_speed() returns 'policy->cur'.
'policy->cur' represents the frequency after the driver has
resolved the request against the hardware frequency table and applied
policy limits (min/max).
This creates a discrepancy between the documentation/user expectation
and the actual code behavior. For instance:
1. User writes a value to 'scaling_setspeed' that is not in the OPP
table (e.g., user asks for A, driver rounds it to B).
2. User reads 'scaling_setspeed'.
3. Code returns B ('policy->cur').
4. User expects A (the "frequency requested"), but gets B.
This patch changes show_speed() to return 'userspace->setspeed', which
stores the actual value last requested by the user. This restores the
read/write symmetry of the attribute and aligns the code with the ABI
description.
The effective frequency can still be observed via 'scaling_cur_freq' or
'cpuinfo_cur_freq', preserving the distinction between "what was
requested" (setspeed) and "what is effective" (cur_freq).
Signed-off-by: Pengjie Zhang <zhangpengjie2@huawei.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: lihuisong@huawei.com
Link: https://patch.msgid.link/20260116094623.2980031-1-zhangpengjie2@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add generic helper functions for u64 sysfs attributes that follow the
common pattern of calling CPPC get/set APIs:
- cppc_cpufreq_sysfs_show_u64(): reads value and handles -EOPNOTSUPP
- cppc_cpufreq_sysfs_store_u64(): parses input and calls set function
Add CPPC_CPUFREQ_ATTR_RW_U64() macro to generate show/store functions
using these helpers, reducing boilerplate for simple attributes.
Convert auto_act_window and energy_performance_preference_val to use
the new macro.
No functional changes.
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Reviewed-by: Lifeng Zheng <zhenglifeng1@huawei.com>
[ rjw: Retained empty code line after a conditional ]
Link: https://patch.msgid.link/20260120145623.2959636-2-sumitg@nvidia.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- Update cpufreq-dt-platdev list for tegra, qcom, TI (Aaron Kling,
Dhruva Gole, and Konrad Dybcio).
- Minor improvements to the cpufreq / cpumask rust implementation
(Alexandre Courbot, Alice Ryhl, Tamir Duberstein, and Yilin Chen).
- Add support for AM62L3 SoC to ti-cpufreq driver (Dhruva Gole).
- Update FIE arch_freq_scale in ticks for non-PCC regs (Jie Zhan).
- Other minor cleanups / improvements (Felix Gu, Juan Martinez, Luca
Weiss, and Sergey Shtylyov).
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Merge tag 'cpufreq-arm-updates-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Pull CPUFreq Arm updates for 7.0 from Viresh Kumar:
"- Update cpufreq-dt-platdev list for tegra, qcom, TI (Aaron Kling,
Dhruva Gole, and Konrad Dybcio).
- Minor improvements to the cpufreq / cpumask rust implementation
(Alexandre Courbot, Alice Ryhl, Tamir Duberstein, and Yilin Chen).
- Add support for AM62L3 SoC to ti-cpufreq driver (Dhruva Gole).
- Update FIE arch_freq_scale in ticks for non-PCC regs (Jie Zhan).
- Other minor cleanups / improvements (Felix Gu, Juan Martinez, Luca
Weiss, and Sergey Shtylyov)."
* tag 'cpufreq-arm-updates-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
cpufreq: scmi: Fix device_node reference leak in scmi_cpu_domain_id()
cpufreq: ti-cpufreq: add support for AM62L3 SoC
cpufreq: dt-platdev: Add ti,am62l3 to blocklist
cpufreq/amd-pstate: Add comment explaining nominal_perf usage for performance policy
cpufreq: scmi: correct SCMI explanation
cpufreq: dt-platdev: Block the driver from probing on more QC platforms
rust: cpumask: rename methods of Cpumask for clarity and consistency
cpufreq: CPPC: Update FIE arch_freq_scale in ticks for non-PCC regs
cpufreq: CPPC: Factor out cppc_fie_kworker_init()
ACPI: CPPC: Factor out and export per-cpu cppc_perf_ctrs_in_pcc_cpu()
rust: cpufreq: replace `kernel::c_str!` with C-Strings
cpufreq: Add Tegra186 and Tegra194 to cpufreq-dt-platdev blocklist
dt-bindings: cpufreq: qcom-hw: document Milos CPUFREQ Hardware
rust: cpufreq: add __rust_helper to helpers
rust: cpufreq: always inline functions using build_assert with arguments
When calling of_parse_phandle_with_args(), the caller is responsible
to call of_node_put() to release the reference of device node.
In scmi_cpu_domain_id(), it does not release the reference.
Fixes: e336baa419 ("cpufreq: scmi: Prepare to move OF parsing of domain-id to cpufreq")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Add CPUFreq support for the AM62L3 SoC with the appropriate
AM62L3 speed grade constants according to the datasheet [1].
This follows the same architecture-specific implementation pattern
as other TI SoCs in the AM6x family.
While at it, also sort instances where the SOC family names
were not sorted alphabetically.
[1] https://www.ti.com/lit/pdf/SPRSPA1
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Kendall Willis <k-willis@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Add AM62L3 SoC to the dt-platdev blocklist to ensure proper handling
of CPUFreq functionality. The AM62L3 will use its native TI CPUFreq
driver implementation instead of the generic dt-platdev driver.
This follows the same pattern as other TI SoCs like AM62A7, AM62D2,
and AM62P5 which have been previously added to this blocklist.
Reviewed-by: Kendall Willis <k-willis@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Add comment explaining why nominal_perf is used for MinPerf when the
CPU frequency policy is set to CPUFREQ_POLICY_PERFORMANCE, rather than
using highest_perf or lowest_nonlinear_perf.
Signed-off-by: Juan Martinez <juan.martinez@amd.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
SCMI stands for System Control and Management Interface, not System Control
and Power Interface -- apparently, Sudeep Holla copied this line from his
SCPI driver and then just forgot to update the acronym explanation... :-)
Fixes: 99d6bdf338 ("cpufreq: add support for CPU DVFS based on SCMI message protocol")
Signed-off-by: Sergey Shtylyov <s.shtylyov@auroraos.dev>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Add a number of QC platforms to the blocklist, they all use either the
qcom-cpufreq-hw driver.
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Rename `as_ref` and `as_mut_ref` to `from_raw` and `from_raw_mut` to
align with the established naming convention for constructing types
from raw pointers in the kernel's Rust codebase.
Signed-off-by: Yilin Chen <1479826151@qq.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Currently, the CPPC Frequency Invariance Engine (FIE) is invoked from the
scheduler tick but defers the update of arch_freq_scale to a separate
thread because cppc_get_perf_ctrs() would sleep if the CPC regs are in PCC.
However, this deferred update mechanism is unnecessary and introduces extra
overhead for non-PCC register spaces (e.g. System Memory or FFH), where
accessing the regs won't sleep and can be safely performed from the tick
context.
Furthermore, with the CPPC FIE registered, it throws repeated warnings of
"cppc_scale_freq_workfn: failed to read perf counters" on our platform with
the CPC regs in System Memory and a power-down idle state enabled. That's
because the remote CPU can be in a power-down idle state, and reading its
perf counters returns 0. Moving the FIE handling back to the scheduler
tick process makes the CPU handle its own perf counters, so it won't be
idle and the issue would be inherently solved.
To address the above issues, update arch_freq_scale directly in ticks for
non-PCC regs and keep the deferred update mechanism for PCC regs.
Reviewed-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Jie Zhan <zhanjie9@hisilicon.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Factor out the CPPC FIE kworker init in cppc_freq_invariance_init() because
it's a standalone procedure for use when the CPC regs are in PCC channels.
Reviewed-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Jie Zhan <zhanjie9@hisilicon.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Factor out cppc_perf_ctrs_in_pcc_cpu() for checking whether per-cpu CPC
regs are defined in PCC channels, and export it out for further use.
Reviewed-by: Lifeng Zheng <zhenglifeng1@huawei.com>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Jie Zhan <zhanjie9@hisilicon.com>
Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
The of_device_id table is expected to be NULL-terminated. Without the
sentinel, the traversal of the array can lead to out-of-bound access,
causing undefined behavior.
This adds the missing sentinel to the qcom_cpufreq_ipq806x_match_list
array.
Fixes: 58f5d39d5e ("cpufreq: qcom-nvmem: add compatible fallback for ipq806x for no SMEM")
Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This is needed to inline these helpers into Rust code.
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
`build_assert` relies on the compiler to optimize out its error path.
Functions using it with its arguments must thus always be inlined,
otherwise the error path of `build_assert` might not be optimized out,
triggering a build error.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
only one core change, the rest are drivers. The core change reorders
some state operations in the error handler to try to prevent missed
wake ups of the error handler (which can halt error processing and
effectively freeze the entire system).
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.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:
"Only one core change, the rest are drivers.
The core change reorders some state operations in the error handler to
try to prevent missed wake ups of the error handler (which can halt
error processing and effectively freeze the entire system)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qla2xxx: Sanitize payload size to prevent member overflow
scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()
scsi: core: Wake up the error handler when final completions race against each other
scsi: storvsc: Process unsupported MODE_SENSE_10
scsi: xen: scsiback: Fix potential memory leak in scsiback_remove()
This a late fix for v6.19.
BR, Jarkko
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Merge tag 'keys-trusted-next-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
Pull keys fix from Jarkko Sakkinen.
* tag 'keys-trusted-next-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
keys/trusted_keys: fix handle passed to tpm_buf_append_name during unseal
Here are some small char/misc/iio and some other minor driver subsystem
fixes for 6.19-rc7. Nothing huge here, just some fixes for reported
issues including:
- lots of little iio driver fixes
- comedi driver fixes
- mux driver fix
- w1 driver fixes
- uio driver fix
- slimbus driver fixes
- hwtracing bugfix
- other tiny bugfixes
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-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc/iio driver fixes from Greg KH:
"Here are some small char/misc/iio and some other minor driver
subsystem fixes for 6.19-rc7. Nothing huge here, just some fixes for
reported issues including:
- lots of little iio driver fixes
- comedi driver fixes
- mux driver fix
- w1 driver fixes
- uio driver fix
- slimbus driver fixes
- hwtracing bugfix
- other tiny bugfixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (36 commits)
comedi: dmm32at: serialize use of paged registers
mei: trace: treat reg parameter as string
uio: pci_sva: correct '-ENODEV' check logic
uacce: ensure safe queue release with state management
uacce: implement mremap in uacce_vm_ops to return -EPERM
uacce: fix isolate sysfs check condition
uacce: fix cdev handling in the cleanup path
slimbus: core: clean up of_slim_get_device()
slimbus: core: fix of_slim_get_device() kernel doc
slimbus: core: amend slim_get_device() kernel doc
slimbus: core: fix device reference leak on report present
slimbus: core: fix runtime PM imbalance on report present
slimbus: core: fix OF node leak on registration failure
intel_th: rename error label
intel_th: fix device leak on output open()
comedi: Fix getting range information for subdevices 16 to 255
mux: mmio: Fix IS_ERR() vs NULL check in probe()
interconnect: debugfs: initialize src_node and dst_node to empty strings
iio: dac: ad3552r-hs: fix out-of-bound write in ad3552r_hs_write_data_source
iio: accel: iis328dq: fix gain values
...
Here are 3 small serial driver fixes for 6.19-rc7 that resolve some
reported issues. They include:
- tty->port race condition fix for a reported problem
- qcom_geni serial driver fix
- 8250_pci serial driver fix
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-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull serial driver fixes from Greg KH:
"Here are three small serial driver fixes for 6.19-rc7 that resolve
some reported issues. They include:
- tty->port race condition fix for a reported problem
- qcom_geni serial driver fix
- 8250_pci serial driver fix
All of these have been in linux-next with no reported issues"
* tag 'tty-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: Fix not set tty->port race condition
serial: 8250_pci: Fix broken RS485 for F81504/508/512
serial: qcom_geni: Fix BT failure regression on RB2 platform
k1: drop wrong IRQF_ONESHOT from IRQ request to fix genirq warning
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Merge tag 'i2c-for-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
- k1: drop wrong IRQF_ONESHOT from IRQ request to fix genirq warning
* tag 'i2c-for-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: spacemit: drop IRQF_ONESHOT flag from IRQ request
- a couple quirks to i8042 to enable keyboard on a Asus and MECHREVO
laptops.
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Merge tag 'input-for-v6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
- a couple of quirks to i8042 to enable keyboard on a Asus and MECHREVO
laptops
* tag 'input-for-v6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: i8042 - add quirks for MECHREVO Wujie 15X Pro
Input: i8042 - add quirk for ASUS Zenbook UX425QA_UM425QA
TPM2_Unseal[1] expects the handle of a loaded data object, and not the
handle of the parent key. But the tpm2_unseal_cmd provides the parent
keyhandle instead of blob_handle for the session HMAC calculation. This
causes unseal to fail.
Fix this by passing blob_handle to tpm_buf_append_name().
References:
[1] trustedcomputinggroup.org/wp-content/uploads/
Trusted-Platform-Module-2.0-Library-Part-3-Version-184_pub.pdf
Fixes: 6e9722e9a7 ("tpm2-sessions: Fix out of range indexing in name_size")
Signed-off-by: Srish Srinivasan <ssrish@linux.ibm.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
The MECHREVO Wujie 15X Pro requires several i8042 quirks to function
correctly. Specifically, NOMUX, RESET_ALWAYS, NOLOOP, and NOPNP are
needed to ensure the keyboard and touchpad work reliably.
Signed-off-by: gongqi <550230171hxy@gmail.com>
Link: https://patch.msgid.link/20260122155501.376199-3-550230171hxy@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The ASUS Zenbook UX425QA_UM425QA fails to initialize the keyboard after
a cold boot.
A quirk already exists for "ZenBook UX425", but some Zenbooks report
"Zenbook" with a lowercase 'b'. Since DMI matching is case-sensitive,
the existing quirk is not applied to these "extra special" Zenbooks.
Testing confirms that this model needs the same quirks as the ZenBook
UX425 variants.
Signed-off-by: feng <alec.jiang@gmail.com>
Link: https://patch.msgid.link/20260122013957.11184-1-alec.jiang@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
- Fix the RISC-V timer compare register update sequence on RV32
systems to use the recommended sequence in the RISC-V ISA manual.
This avoids spurious interrupts during updates.
- Add a dependence on the new CONFIG_CACHEMAINT_FOR_DMA Kconfig symbol
for Renesas and StarFive RISC-V SoCs
- Add a temporary workaround for a Clang compiler bug caused by using
asm_goto_output for get_user()
- Clarify our documentation to specifically state a particular ISA
specification version for a chapter number reference
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Merge tag 'riscv-for-linus-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley:
"The notable changes here are the three RISC-V timer compare register
update sequence patches. These only apply to RV32 systems and are
related to the 64-bit timer compare value being split across two
separate 32-bit registers.
We weren't using the appropriate three-write sequence, documented in
the RISC-V ISA specifications, to avoid spurious timer interrupts
during the update sequence; so, these patches now use the recommended
sequence.
This doesn't affect 64-bit RISC-V systems, since the timer compare
value fits inside a single register and can be updated with a single
write.
- Fix the RISC-V timer compare register update sequence on RV32
systems to use the recommended sequence in the RISC-V ISA manual
This avoids spurious interrupts during updates
- Add a dependence on the new CONFIG_CACHEMAINT_FOR_DMA Kconfig
symbol for Renesas and StarFive RISC-V SoCs
- Add a temporary workaround for a Clang compiler bug caused by using
asm_goto_output for get_user()
- Clarify our documentation to specifically state a particular ISA
specification version for a chapter number reference"
* tag 'riscv-for-linus-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Add intermediate cast to 'unsigned long' in __get_user_asm
riscv: Use 64-bit variable for output in __get_user_asm
soc: renesas: Fix missing dependency on new CONFIG_CACHEMAINT_FOR_DMA
riscv: ERRATA_STARFIVE_JH7100: Fix missing dependency on new CONFIG_CACHEMAINT_FOR_DMA
riscv: suspend: Fix stimecmp update hazard on RV32
riscv: kvm: Fix vstimecmp update hazard on RV32
riscv: clocksource: Fix stimecmp update hazard on RV32
Documentation: riscv: uabi: Clarify ISA spec version for canonical order
- Fix a crash with passing a stacktrace between synthetic events
A synthetic event is an event that combines two events into a single event
that can display fields from both events as well as the time delta that
took place between the events. It can also pass a stacktrace from the
first event so that it can be displayed by the synthetic event (this is
useful to get a stacktrace of a task scheduling out when blocked and
recording the time it was blocked for).
A synthetic event can also connect an existing synthetic event to another
event. An issue was found that if the first synthetic event had a stacktrace
as one of its fields, and that stacktrace field was passed to the new
synthetic event to be displayed, it would crash the kernel. This was due to
the stacktrace not being saved as a stacktrace but was still marked as one.
When the stacktrace was read, it would try to read an array but instead read
the integer metadata of the stacktrace and dereferenced a bad value.
Fix this by saving the stacktrace field as a stracktrace.
- Fix possible overflow in cmp_mod_entry() compare function
A binary search is used to find a module address and if the addresses are
greater than 2GB apart it could lead to truncation and cause a bad search
result. Use normal compares instead of a subtraction between addresses to
calculate the compare value.
- Fix output of entry arguments in function graph tracer
Depending on the configurations enabled, the entry can be two different
types that hold the argument array. The macro FGRAPH_ENTRY_ARGS() is used
to find the correct arguments from the given type. One location was missed
and still referenced the arguments directly via entry->args and could
produce the wrong value depending on how the kernel was configured.
- Fix memory leak in scripts/tracepoint-update build tool
If the array fails to allocate, the memory for the values needs to be
freed and was not. Free the allocated values if the array failed to
allocate.
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Merge tag 'trace-v6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix a crash with passing a stacktrace between synthetic events
A synthetic event is an event that combines two events into a single
event that can display fields from both events as well as the time
delta that took place between the events. It can also pass a
stacktrace from the first event so that it can be displayed by the
synthetic event (this is useful to get a stacktrace of a task
scheduling out when blocked and recording the time it was blocked
for).
A synthetic event can also connect an existing synthetic event to
another event. An issue was found that if the first synthetic event
had a stacktrace as one of its fields, and that stacktrace field was
passed to the new synthetic event to be displayed, it would crash the
kernel. This was due to the stacktrace not being saved as a
stacktrace but was still marked as one. When the stacktrace was read,
it would try to read an array but instead read the integer metadata
of the stacktrace and dereferenced a bad value.
Fix this by saving the stacktrace field as a stacktrace.
- Fix possible overflow in cmp_mod_entry() compare function
A binary search is used to find a module address and if the addresses
are greater than 2GB apart it could lead to truncation and cause a
bad search result. Use normal compares instead of a subtraction
between addresses to calculate the compare value.
- Fix output of entry arguments in function graph tracer
Depending on the configurations enabled, the entry can be two
different types that hold the argument array. The macro
FGRAPH_ENTRY_ARGS() is used to find the correct arguments from the
given type. One location was missed and still referenced the
arguments directly via entry->args and could produce the wrong value
depending on how the kernel was configured.
- Fix memory leak in scripts/tracepoint-update build tool
If the array fails to allocate, the memory for the values needs to be
freed and was not. Free the allocated values if the array failed to
allocate.
* tag 'trace-v6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
scripts/tracepoint-update: Fix memory leak in add_string() on failure
function_graph: Fix args pointer mismatch in print_graph_retval()
tracing: Avoid possible signed 64-bit truncation
tracing: Fix crash on synthetic stacktrace field usage
Document project continuity procedures. This is a plan for a plan for
navigating events that affect the forward progress of the canonical
Linux repository, torvalds/linux.git.
It is a follow-up from Maintainer Summit [1].
Co-developed-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Jiri Kosina <jkosina@suse.com>
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://lwn.net/Articles/1050179/ [1]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Always inline I/O and IRQ methods using build_assert!() to avoid
false positive build errors.
- Do not free the driver's device private data in I2C shutdown()
avoiding race conditions that can lead to UAF bugs.
- Drop the driver's device private data after the driver has been
fully unbound from its device to avoid UAF bugs from &Device<Bound>
scopes, such as IRQ callbacks.
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Merge tag 'driver-core-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core fixes from Danilo Krummrich:
- Always inline I/O and IRQ methods using build_assert!() to avoid
false positive build errors
- Do not free the driver's device private data in I2C shutdown()
avoiding race conditions that can lead to UAF bugs
- Drop the driver's device private data after the driver has been
fully unbound from its device to avoid UAF bugs from &Device<Bound>
scopes, such as IRQ callbacks
* tag 'driver-core-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core:
rust: driver: drop device private data post unbind
rust: driver: add DriverData type to the DriverLayout trait
rust: driver: add DEVICE_DRIVER_OFFSET to the DriverLayout trait
rust: driver: introduce a DriverLayout trait
rust: auxiliary: add Driver::unbind() callback
rust: i2c: do not drop device private data on shutdown()
rust: irq: always inline functions using build_assert with arguments
rust: io: always inline functions using build_assert with arguments
- Fix PELT clock synchronization bug when entering idle
- Disable the NEXT_BUDDY feature, as during extensive testing
Mel found that the negatives outweigh the positives.
- Make wakeup preemption less aggressive, which resulted in
an unreasonable increase in preemption frequency.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-01-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix PELT clock synchronization bug when entering idle
- Disable the NEXT_BUDDY feature, as during extensive testing
Mel found that the negatives outweigh the positives
- Make wakeup preemption less aggressive, which resulted in
an unreasonable increase in preemption frequency
* tag 'sched-urgent-2026-01-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Revert force wakeup preemption
sched/fair: Disable scheduler feature NEXT_BUDDY
sched/fair: Fix pelt clock sync when entering idle
- Fix mmap_count warning & bug when creating a group member event
with the PERF_FLAG_FD_OUTPUT flag.
- Disable the sample period == 1 branch events BTS optimization
on guests, because BTS is not virtualized.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2026-01-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events fixes from Ingo Molnar:
- Fix mmap_count warning & bug when creating a group member event
with the PERF_FLAG_FD_OUTPUT flag
- Disable the sample period == 1 branch events BTS optimization
on guests, because BTS is not virtualized
* tag 'perf-urgent-2026-01-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel: Do not enable BTS for guests
perf: Fix refcount warning on event->mmap_count increment
- Fix spurious interrupts during resume in the renesas-rzv2h driver
- Fix a 32+ bit physical memory truncation bug in the gic-v3-its
driver
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'irq-urgent-2026-01-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Ingo Molnar:
- Fix spurious interrupts during resume in the renesas-rzv2h driver
- Fix a 32+ bit physical memory truncation bug in the gic-v3-its driver
* tag 'irq-urgent-2026-01-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Avoid truncating memory addresses
irqchip/renesas-rzv2h: Prevent TINT spurious interrupt during resume
- Ensure early return semantics are preserved for pKVM fault handlers
- Fix case where the kernel runs with the guest's PAN value when
CONFIG_ARM64_PAN is not set
- Make stage-1 walks to set the access flag respect the access
permission of the underlying stage-2, when enabled
- Propagate computed FGT values to the pKVM view of the vCPU at
vcpu_load()
- Correctly program PXN and UXN privilege bits for hVHE's stage-1 page
tables
- Check that the VM is actually using VGICv3 before accessing the GICv3
CPU interface
- Delete some unused code
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull arm64 kvm fixes from Paolo Bonzini:
- Ensure early return semantics are preserved for pKVM fault handlers
- Fix case where the kernel runs with the guest's PAN value when
CONFIG_ARM64_PAN is not set
- Make stage-1 walks to set the access flag respect the access
permission of the underlying stage-2, when enabled
- Propagate computed FGT values to the pKVM view of the vCPU at
vcpu_load()
- Correctly program PXN and UXN privilege bits for hVHE's stage-1 page
tables
- Check that the VM is actually using VGICv3 before accessing the GICv3
CPU interface
- Delete some unused code
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: arm64: Invert KVM_PGTABLE_WALK_HANDLE_FAULT to fix pKVM walkers
KVM: arm64: Don't blindly set set PSTATE.PAN on guest exit
KVM: arm64: nv: Respect stage-2 write permssion when setting stage-1 AF
KVM: arm64: Remove unused vcpu_{clear,set}_wfx_traps()
KVM: arm64: Remove unused parameter in synchronize_vcpu_pstate()
KVM: arm64: Remove extra argument for __pvkm_host_{share,unshare}_hyp()
KVM: arm64: Inject UNDEF for a register trap without accessor
KVM: arm64: Copy FGT traps to unprotected pKVM VCPU on VCPU load
KVM: arm64: Fix EL2 S1 XN handling for hVHE setups
KVM: arm64: gic: Check for vGICv3 when clearing TWI
k1: drop IRQF_ONESHOT from IRQ request to fix genirq warning.
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Merge tag 'i2c-host-fixes-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-current
i2c-host-fixes for v6.19-rc7
k1: drop IRQF_ONESHOT from IRQ request to fix genirq warning.
- Ensure early return semantics are preserved for pKVM fault handlers
- Fix case where the kernel runs with the guest's PAN value when
CONFIG_ARM64_PAN is not set
- Make stage-1 walks to set the access flag respect the access
permission of the underlying stage-2, when enabled
- Propagate computed FGT values to the pKVM view of the vCPU at
vcpu_load()
- Correctly program PXN and UXN privilege bits for hVHE's stage-1 page
tables
- Check that the VM is actually using VGICv3 before accessing the GICv3
CPU interface
- Delete some unused code
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Merge tag 'kvmarm-fixes-6.19-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.19
- Ensure early return semantics are preserved for pKVM fault handlers
- Fix case where the kernel runs with the guest's PAN value when
CONFIG_ARM64_PAN is not set
- Make stage-1 walks to set the access flag respect the access
permission of the underlying stage-2, when enabled
- Propagate computed FGT values to the pKVM view of the vCPU at
vcpu_load()
- Correctly program PXN and UXN privilege bits for hVHE's stage-1 page
tables
- Check that the VM is actually using VGICv3 before accessing the GICv3
CPU interface
- Delete some unused code
- Reduce possible complications when cross-compiling by increasing use
of ${NM} in check-function-names.sh
- Fix static linking of nconf
Cc: Carlos Llamas <cmllamas@google.com>
Cc: Arkadiusz Kozdra <floss@arusekk.pl>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Nicolas Schier <nsc@kernel.org>
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Merge tag 'kbuild-fixes-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull kbuild fixes from Nicolas Schier:
- Reduce possible complications when cross-compiling by increasing use
of ${NM} in check-function-names.sh
- Fix static linking of nconf
* tag 'kbuild-fixes-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
kconfig: fix static linking of nconf
kbuild: prefer ${NM} in check-function-names.sh
- Add $(DISABLE_KSTACK_ERASE) to vdso compile flags to fix compile errors
with old gcc versions
- Fix path to s390 chacha implementation in vdso selftests, after vdso64
has been renamed to vdso
- Fix off-by-one bug in APQN limit calculation
- Discard .modinfo section from decompressor image to fix SecureBoot
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Merge tag 's390-6.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Heiko Carstens:
- Add $(DISABLE_KSTACK_ERASE) to vdso compile flags to fix compile
errors with old gcc versions
- Fix path to s390 chacha implementation in vdso selftests, after
vdso64 has been renamed to vdso
- Fix off-by-one bug in APQN limit calculation
- Discard .modinfo section from decompressor image to fix SecureBoot
* tag 's390-6.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/boot/vmlinux.lds.S: Ensure bzImage ends with SecureBoot trailer
s390/ap: Fix wrong APQN fill calculation
selftests: vDSO: getrandom: Fix path to s390 chacha implementation
s390/vdso: Disable kstack erase
- A set of fixes for FPSIMD/SVE/SME state management (around signal
handling and ptrace) where a task can be placed in an invalid state
- __nocfi added to swsusp_arch_resume() to avoid a data abort on
resuming from hibernate
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- A set of fixes for FPSIMD/SVE/SME state management (around signal
handling and ptrace) where a task can be placed in an invalid state
- __nocfi added to swsusp_arch_resume() to avoid a data abort on
resuming from hibernate
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Set __nocfi on swsusp_arch_resume()
arm64/fpsimd: signal: Fix restoration of SVE context
arm64/fpsimd: signal: Allocate SSVE storage when restoring ZA
arm64/fpsimd: ptrace: Fix SVE writes on !SME systems
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Merge tag 'v6.19-rc6-server-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
- Use the original nents value for ib_dma_unmap_sg(), preventing
potential memory corruption in the RDMA transport layer
- Fix a naming discrepancy in the kernel-doc for
ksmbd_vfs_kern_path_start_removing() as identified by sparse static
analysis
- Reset smb_direct_port to its default value during initialization to
ensure the correct port is used when switching between different RDMA
device types without module reload
* tag 'v6.19-rc6-server-fixes' of git://git.samba.org/ksmbd:
smb: server: reset smb_direct_port = SMB_DIRECT_PORT_INFINIBAND on init
smb: server: fix comment for ksmbd_vfs_kern_path_start_removing()
ksmbd: smbd: fix dma_unmap_sg() nents
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Merge tag 'pci-v6.19-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI fixes from Bjorn Helgaas:
- Fix the pci_do_resource_release_and_resize() failure path, which
clobbered the intended failure return value (Ilpo Järvinen)
- Restore resizable BAR size before value because the size determines
which bits are writable; this fixes i915 and xe regressions (Ilpo
Järvinen)
* tag 'pci-v6.19-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
PCI: Fix Resizable BAR restore order
PCI: Fix BAR resize rollback path overwriting ret
Fixes and New HW Support
- acer-wmi:
- Extend support for Acer Nitro AN515-58
- Fix missing capability check
- amd/wbrf: Fix memory leak in wbrf_record()
- asus-armoury:
- Fix GA403U* matching
- Fix FA608UM TDP data
- Add many models
- asus-wmi: Move OOBE presence check outside deprecation ifdef
- docs:
- alienware-wmi: Typo fix
- amd_hsmp: Fix document link
- hp-bioscfg:
- Fix kernel panic in GET_INSTANCE_ID macro
- Fix kobject warnings for empty attribute names
- Correct GUID to uppercase (lowercase letter prevented autoloading
the module)
- mellanox: Fix SN5640/SN5610 LED platform data
The following is an automated shortlog grouped by driver:
acer-wmi:
- Extend support for Acer Nitro AN515-58
- Fix missing capability check
amd:
- Fix memory leak in wbrf_record()
asus-armoury:
- Add power limits for Asus G513QY
- add support for FA401UV
- add support for FA617XT
- add support for G835L
- add support for GA403UV
- add support for GA403WM
- add support for GA403WW
- add support for GV302XV
- fix ppt data for FA608UM
- fix ppt data for GA403U* renaming to GA403UI
- keep the list ordered alphabetically
asus-wmi:
- fix sending OOBE at probe
docs: alienware-wmi:
- fix typo
docs:
- fix PPR for AMD EPYC broken link
hp-bioscfg:
- Fix automatic module loading
- Fix kernel panic in GET_INSTANCE_ID macro
- Fix kobject warnings for empty attribute names
mellanox:
- Fix SN5640/SN5610 LED platform data
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Merge tag 'platform-drivers-x86-v6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Ilpo Järvinen:
- acer-wmi:
- Extend support for Acer Nitro AN515-58
- Fix missing capability check
- amd/wbrf: Fix memory leak in wbrf_record()
- asus-armoury:
- Fix GA403U* matching
- Fix FA608UM TDP data
- Add many models
- asus-wmi: Move OOBE presence check outside deprecation ifdef
- hp-bioscfg:
- Fix kernel panic in GET_INSTANCE_ID macro
- Fix kobject warnings for empty attribute names
- Correct GUID to uppercase (lowercase letter prevented autoloading
the module)
- mellanox: Fix SN5640/SN5610 LED platform data
- docs:
- alienware-wmi: Typo fix
- amd_hsmp: Fix document link
* tag 'platform-drivers-x86-v6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (21 commits)
platform/x86: acer-wmi: Fix missing capability check
platform/x86: acer-wmi: Extend support for Acer Nitro AN515-58
platform/x86: asus-armoury: add support for GA403WW
platform/x86: asus-armoury: keep the list ordered alphabetically
platform/x86: asus-armoury: add support for G835L
platform/x86: asus-armoury: fix ppt data for FA608UM
platform/x86: hp-bioscfg: Fix automatic module loading
platform/x86: hp-bioscfg: Fix kernel panic in GET_INSTANCE_ID macro
platform/x86: hp-bioscfg: Fix kobject warnings for empty attribute names
platform/x86: asus-wmi: fix sending OOBE at probe
platform/x86: asus-armoury: add support for FA617XT
platform/x86: asus-armoury: add support for FA401UV
platform/x86: asus-armoury: add support for GV302XV
platform/x86: asus-armoury: Add power limits for Asus G513QY
platform/x86/amd: Fix memory leak in wbrf_record()
platform/mellanox: Fix SN5640/SN5610 LED platform data
docs: fix PPR for AMD EPYC broken link
docs: alienware-wmi: fix typo
platform/x86: asus-armoury: add support for GA403UV
asus-armoury: fix ppt data for GA403U* renaming to GA403UI
...
