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1,403,262 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Eduard Zingerman
|
1b30d44417 |
bpf: Fix memory leak of bpf_scc_info objects
env->scc_info array contains references to bpf_scc_info objects
allocated lazily in verifier.c:scc_visit_alloc().
env->scc_cnt was supposed to track env->scc_info array size
in order to free referenced objects in verifier.c:free_states().
Fix initialization of env->scc_cnt that was omitted in
verifier.c:compute_scc().
To reproduce the bug:
- build with CONFIG_DEBUG_KMEMLEAK
- boot and load bpf program with loops, e.g.:
./veristat -q pyperf180.bpf.o
- initiate memleak scan and check results:
echo scan > /sys/kernel/debug/kmemleak
cat /sys/kernel/debug/kmemleak
Fixes:
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Sean Anderson
|
0808da36b9 |
ALSA: usb-audio: Don't use printk_ratelimit for debug prints
printk_ratelimit is deprecated, since it shares state with all other printk sites. Additionally, the suppression message is printed at warning level even though the actual messages are printed at debug and are (usually) invisible! This can result in thousands of messages like retire_capture_urb: 4992 callbacks suppressed in the console, and can inhibit debugging since it is unclear what the source of the suppressed callbacks is. Switch to dev_dbg_ratelimited which doesn't print anything unless debug is enabled. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Link: https://patch.msgid.link/20250801154710.739464-1-sean.anderson@linux.dev Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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Thomas Gleixner
|
e703b7e247 |
futex: Move futex cleanup to __mmdrop()
Futex hash allocations are done in mm_init() and the cleanup happens in
__mmput(). That works most of the time, but there are mm instances which
are instantiated via mm_alloc() and freed via mmdrop(), which causes the
futex hash to be leaked.
Move the cleanup to __mmdrop().
Fixes:
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Roman Kisel
|
83e6384374 |
smp: Fix spelling in on_each_cpu_cond_mask()'s doc-comment
"boolean" is spelt as "blooean". Fix that. Signed-off-by: Roman Kisel <romank@linux.microsoft.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250722161818.6139-1-romank@linux.microsoft.com |
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Huacai Chen
|
0a91336e28 |
Merge tag 'bpf-next-6.17' into loongarch-next
LoongArch architecture changes for 6.17 have many bpf features such as trampoline, so merge 'bpf-next-6.17' to create a base to make bpf work well. |
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Tao Chen
|
f3af62b6ce |
bpftool: Add bash completion for token argument
This commit updates the bash completion script with the new token argument. $ bpftool token help list show Reviewed-by: Quentin Monnet <qmo@kernel.org> Signed-off-by: Tao Chen <chen.dylane@linux.dev> Link: https://lore.kernel.org/r/20250723144442.1427943-3-chen.dylane@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Tao Chen
|
b7f6400849 |
bpftool: Add bpftool-token manpage
Add bpftool-token manpage with information and examples of token-related commands. Suggested-by: Quentin Monnet <qmo@kernel.org> Reviewed-by: Quentin Monnet <qmo@kernel.org> Signed-off-by: Tao Chen <chen.dylane@linux.dev> Link: https://lore.kernel.org/r/20250723144442.1427943-2-chen.dylane@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Tao Chen
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2d812311c2 |
bpftool: Add bpf_token show
Add `bpftool token show` command to get token info
from bpffs in /proc/mounts.
Example plain output for `token show`:
token_info /sys/fs/bpf/token
allowed_cmds:
map_create prog_load
allowed_maps:
allowed_progs:
kprobe
allowed_attachs:
xdp
token_info /sys/fs/bpf/token2
allowed_cmds:
map_create prog_load
allowed_maps:
allowed_progs:
kprobe
allowed_attachs:
xdp
Example json output for `token show`:
[{
"token_info": "/sys/fs/bpf/token",
"allowed_cmds": ["map_create", "prog_load"],
"allowed_maps": [],
"allowed_progs": ["kprobe"],
"allowed_attachs": ["xdp"]
}, {
"token_info": "/sys/fs/bpf/token2",
"allowed_cmds": ["map_create", "prog_load"],
"allowed_maps": [],
"allowed_progs": ["kprobe"],
"allowed_attachs": ["xdp"]
}]
Reviewed-by: Quentin Monnet <qmo@kernel.org>
Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Link: https://lore.kernel.org/r/20250723144442.1427943-1-chen.dylane@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Alexei Starovoitov
|
e56f416c8e |
Merge branch 'task-local-data'
Amery Hung says:
====================
Task local data
v6 -> v7
- Fix typos and improve the clarity of the cover letter (Emil)
- Some variable naming changes to make it less confusing (Emil)
- Add retry in tld_obj_init() as bpf_task_storage_get_recur() with
BPF_LOCAL_STORAGE_GET_F_CREATE can fail if the task local storage
is also being modified by other threads on the same CPU. This can
be especially easy to trigger in CI VM that only has two CPUs.
Adding bpf_preempt_{disable,enable} around bpf_task_storage_get()
does not solve the problem as other threads competing for the percpu
counter lock in task local storage may not limit to bpf helpers.
Some may be calling bpf_task_storage_free() when threads exit.
There is no good max retry under heavy contention. For the 1st
selftest in this set, the max retry to guarantee success grows
linearly with the thread count. A proposal is to remove the percpu
counter by changing locks in bpf_local_storage to rqspinlock.
An alternative is to reduce the probability of failure by allowing
bpf syscall and struct_ops programs to use bpf_task_storage_get()
instead of the _recur version by modifying bpf_prog_check_recur().
This does not solve the problem in tracing programs though.
v6: https://lore.kernel.org/bpf/20250717164842.1848817-1-ameryhung@gmail.com/
* Overview *
This patchset introduces task local data, an abstract storage type
shared between user space and bpf programs for storing data specific to
each task, and implements a library to access it. The goal is to provide
an abstraction + implementation that is efficient in data sharing and
easy to use. The motivating use case is user space hinting with
sched_ext.
* Motivating use case *
CPU schedulers can potentially make a better decision with hints from
user space process. To support experimenting user space hinting with
sched_ext, there needs a mechanism to pass a "per-task hint" from user
space to the bpf scheduler "efficiently".
A bpf feature, UPTR [0], supported by task local storage is introduced
to serve the needs. It allows pinning a user space page to the kernel
through a special field in task local storage map. This patchset further
builds an abstraction on top of it to allow user space and bpf programs
to easily share per-task data.
* Design *
Task local data is built on top of task local storage map and UPTR to
achieve fast per-task data sharing. UPTR is a type of special field
supported in task local storage map value. A user page assigned to a UPTR
will be pinned to the kernel when the map is updated. Therefore, user
space programs can update data that will be seen by bpf programs without
syscalls.
Additionally, unlike most bpf maps, task local data does not require a
static map value definition. This design is driven by sched_ext, which
would like to allow multiple developers to share a storage without the
need to explicitly agree on the layout of it. While a centralized layout
definition would have worked, the friction of synchronizing it across
different repos is not desirable. This simplify code base management and
makes experimenting easier.
* Introduction to task local data library *
Task local data library provides simple APIs for user space and bpf
through two header files, task_local_data.h and task_local_data.bpf.h,
respectively. The diagram below illustrates the basic usage.
First, an entry of data in task local data, we call it a TLD, needs to
be defined in the user space through TLD_DEFINE_KEY() with information
including the size and the name. The macro will define a global variable
key of opaque type tld_key_t associated with the TLD and initialize it.
Then, the user space program can locate the TLD by passing the key to
tld_get_data() in different thread, where fd is the file descriptor of
the underlying task local storage map. The API returns a pointer to the
TLD specific to the calling thread and will remain valid until the
thread exits. Finally, user space programs can directly read/write the
TLD without bpf syscalls.
To use task local storage on the bpf side, struct tld_keys, needs to
be defined first. The structure that will be used to create tld_key_map
should contain the keys to the TLDs used in a bpf program. In the bpf
program, tld_init_object() first needs to be called to initialize a
struct tld_object variable on the stack. Then, tld_get_data() can be
called to get a pointer to the TLD similar to the user space. The API
will use the name to lookup task local data and cache the key in task
local storage map, tld_key_map, to speed up subsequent access. The size
of the TLD is also needed to prevent out-of-bound access in bpf.
┌─ Application ───────────────────────────────────────────────────────┐
│ TLD_DEFINE_KEY(kx, "X", 4); ┌─ library A ─────────────────────┐│
│ │ void func(...) ││
│ int main(...) │ { ││
│ { │ tld_key_t ky; ││
│ int *x; │ bool *y; ││
│ │ ││
│ x = tld_get_data(fd, kx); │ ky = tld_create_key("Y", 1);││
│ if (x) *x = 123; │ y = tld_get_data(fd, ky); ││
│ ┌────────┤ if (y) *y = true; ││
│ │ └─────────────────────────────────┘│
└───────┬─────────────────│───────────────────────────────────────────┘
V V
+ ─ Task local data ─ ─ ─ ─ ─ + ┌─ BPF program ──────────────────────┐
| ┌─ tld_data_map ──────────┐ | │ struct tld_object obj; │
| │ BPF Task local storage │ | │ bool *y; │
| │ │ | │ int *x; │
| │ tld_data_u __uptr *data │ | │ │
| │ tld_meta_u __uptr *meta │ | │ if (tld_init_object(task, &obj)) │
| └─────────────────────────┘ | │ return 0; │
| ┌─ tld_key_map ───────────┐ | │ │
| │ BPF Task local storage │ | │ x = tld_get_data(&obj, kx, "X", 4);│
| │ │ |<─┤ if (x) /* do something */ │
| │ tld_key_t kx; │ | │ │
| │ tld_key_t ky; │ | │ y = tld_get_data(&obj, ky, "Y", 1);│
| └─────────────────────────┘ | │ if (y) /* do something */ │
+ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ + └────────────────────────────────────┘
* Implementation *
Task local data defines the storage to be a task local storage map with
two UPTRs pointing to tld_data_u and tld_meta_u. tld_data_u, individual
to each thread, contains TLD data and the starting offset of data in a
page. tld_meta_u, shared by threads in a process, consists of the TLD
counts, total size of TLDs and tld_metadata for each TLD. tld_metadata
contains the name and the size of a TLD.
struct tld_data_u {
u64 start;
char data[PAGE_SIZE - sizeof(u64)];
};
struct tld_meta_u {
u8 cnt;
u16 size;
struct metadata metadata[TLD_DATA_CNT];
};
Both user space and bpf API follow the same protocol when accessing
task local data. A pointer to a TLD is located using a key. The key is
effectively the offset of a TLD in tld_data_u->data. To define a new
TLD, the user space API TLD_DEFINE_KEY() iterates tld_meta_u->metadata
until an empty slot is found and then update it. It also adds up sizes
of prior TLDs to derive the offset (i.e., key). Then, to locate a TLD,
tld_get_data() can simply return tld_data_u->data + offset.
To locate a TLD in bpf programs, an API with the same name as the user
space, tld_get_data() can be called. It takes more effort in the first
invocation as it fetches the key by name. Internal helper,
__tld_fetch_key() will iterate tld_meta_u->metadata until the name is
found. Then, the offset is cached as key in another task local storage
map, tld_key_map. When the search fails, the current TLD count is
cached instead to skip searching metadata entries that has been searched
in future invocation. The detail of task local data operations can be
found in patch 1.
* Misc *
The metadata can potentially use run-length encoding for names to reduce
memory wastage and support save more TLDs. I have a version that works,
but the selftest takes a bit longer to finish. More investigation needed
to find the root cause. I will save this for the future when there is a
need to store more than 63 TLDs.
[0] https://lore.kernel.org/bpf/20241023234759.860539-1-martin.lau@linux.dev/
---
v5 -> v6
- Address Andrii's comment
- Fix verification failure in no_alu32
- Some cleanup
v5: https://lore.kernel.org/bpf/20250627233958.2602271-1-ameryhung@gmail.com/
v4 -> v5
- Add an option to free memory on thread exit to prevent memory leak
- Add an option to reduce memory waste if the allocator can
use just enough memory to fullfill aligned_alloc() (e.g., glibc)
- Tweak bpf API
- Remove tld_fetch_key() as it does not work in init_tasl
- tld_get_data() now tries to fetch key if it is not cached yet
- Optimize bpf side tld_get_data()
- Faster fast path
- Less code
- Use stdatomic.h in user space library with seq_cst order
- Introduce TLD_DEFINE_KEY() as the default TLD creation API for
easier memory management.
- TLD_DEFINE_KEY() can consume memory up to a page and no memory
is wasted since their size is known before per-thread data
allocation.
- tld_create_key() can only use up to TLD_DYN_DATA_SIZE. Since
tld_create_key can run any time even after per-thread data
allocation, it is impossible to predict the total size. A
configurable size of memory is allocated on top of the total
size of TLD_DEFINE_KEY() to accommodate dynamic key creation.
- Add tld prefix to all macros
- Replace map_update(NO_EXIST) in __tld_init_data() with cmpxchg()
- No more +1,-1 dance on the bpf side
- Reduce printf from ASSERT in race test
- Try implementing run-length encoding for name and decide to
save it for the future
v4: https://lore.kernel.org/bpf/20250515211606.2697271-1-ameryhung@gmail.com/
v3 -> v4
- API improvements
- Simplify API
- Drop string obfuscation
- Use opaque type for key
- Better documentation
- Implementation
- Switch to dynamic allocation for per-task data
- Now offer as header-only libraries
- No TLS map pinning; leave it to users
- Drop pthread dependency
- Add more invalid tld_create_key() test
- Add a race test for tld_create_key()
v3: https://lore.kernel.org/bpf/20250425214039.2919818-1-ameryhung@gmail.com/
---
====================
Link: https://patch.msgid.link/20250730185903.3574598-1-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Amery Hung
|
7841811417 |
selftests/bpf: Test concurrent task local data key creation
Test thread-safety of tld_create_key(). Since tld_create_key() does not rely on locks but memory barriers and atomic operations to protect the shared metadata, the thread-safety of the function is non-trivial. Make sure concurrent tld_key_create(), both valid and invalid, can not race and corrupt metatada, which may leads to TLDs not being thread- specific or duplicate TLDs with the same name. Signed-off-by: Amery Hung <ameryhung@gmail.com> Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Link: https://lore.kernel.org/r/20250730185903.3574598-5-ameryhung@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Amery Hung
|
120f1a950e |
selftests/bpf: Test basic task local data operations
Test basic operations of task local data with valid and invalid
tld_create_key().
For invalid calls, make sure they return the right error code and check
that the TLDs are not inserted by running tld_get_data("
value_not_exists") on the bpf side. The call should a null pointer.
For valid calls, first make sure the TLDs are created by calling
tld_get_data() on the bpf side. The call should return a valid pointer.
Finally, verify that the TLDs are indeed task-specific (i.e., their
addresses do not overlap) with multiple user threads. This done by
writing values unique to each thread, reading them from both user space
and bpf, and checking if the value read back matches the value written.
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20250730185903.3574598-4-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Amery Hung
|
31e838e1cd |
selftests/bpf: Introduce task local data
Task local data defines an abstract storage type for storing task-
specific data (TLD). This patch provides user space and bpf
implementation as header-only libraries for accessing task local data.
Task local data is a bpf task local storage map with two UPTRs:
- tld_meta_u, shared by all tasks of a process, consists of the total
count and size of TLDs and an array of metadata of TLDs. A TLD
metadata contains the size and name. The name is used to identify a
specific TLD in bpf programs.
- u_tld_data points to a task-specific memory. It stores TLD data and
the starting offset of data in a page.
Task local design decouple user space and bpf programs. Since bpf
program does not know the size of TLDs in compile time, u_tld_data
is declared as a page to accommodate TLDs up to a page. As a result,
while user space will likely allocate memory smaller than a page for
actual TLDs, it needs to pin a page to kernel. It will pin the page
that contains enough memory if the allocated memory spans across the
page boundary.
The library also creates another task local storage map, tld_key_map,
to cache keys for bpf programs to speed up the access.
Below are the core task local data API:
User space BPF
Define TLD TLD_DEFINE_KEY(), tld_create_key() -
Init TLD object - tld_object_init()
Get TLD data tld_get_data() tld_get_data()
- TLD_DEFINE_KEY(), tld_create_key()
A TLD is first defined by the user space with TLD_DEFINE_KEY() or
tld_create_key(). TLD_DEFINE_KEY() defines a TLD statically and
allocates just enough memory during initialization. tld_create_key()
allows creating TLDs on the fly, but has a fix memory budget,
TLD_DYN_DATA_SIZE.
Internally, they all call __tld_create_key(), which iterates
tld_meta_u->metadata to check if a TLD can be added. The total TLD
size needs to fit into a page (limit of UPTR), and no two TLDs can
have the same name. If a TLD can be added, u_tld_meta->cnt is
increased using cmpxchg as there may be other concurrent
__tld_create_key(). After a successful cmpxchg, the last available
tld_meta_u->metadata now belongs to the calling thread. To prevent
other threads from reading incomplete metadata while it is being
updated, tld_meta_u->metadata->size is used to signal the completion.
Finally, the offset, derived from adding up prior TLD sizes is then
encapsulated as an opaque object key to prevent user misuse. The
offset is guaranteed to be 8-byte aligned to prevent load/store
tearing and allow atomic operations on it.
- tld_get_data()
User space programs can pass the key to tld_get_data() to get a
pointer to the associated TLD. The pointer will remain valid for the
lifetime of the thread.
tld_data_u is lazily allocated on the first call to tld_get_data().
Trying to read task local data from bpf will result in -ENODATA
during tld_object_init(). The task-specific memory need to be freed
manually by calling tld_free() on thread exit to prevent memory leak
or use TLD_FREE_DATA_ON_THREAD_EXIT.
- tld_object_init() (BPF)
BPF programs need to call tld_object_init() before calling
tld_get_data(). This is to avoid redundant map lookup in
tld_get_data() by storing pointers to the map values on stack.
The pointers are encapsulated as tld_object.
tld_key_map is also created on the first time tld_object_init()
is called to cache TLD keys successfully fetched by tld_get_data().
bpf_task_storage_get(.., F_CREATE) needs to be retried since it may
fail when another thread has already taken the percpu counter lock
for the task local storage.
- tld_get_data() (BPF)
BPF programs can also get a pointer to a TLD with tld_get_data().
It uses the cached key in tld_key_map to locate the data in
tld_data_u->data. If the cached key is not set yet (<= 0),
__tld_fetch_key() will be called to iterate tld_meta_u->metadata
and find the TLD by name. To prevent redundant string comparison
in the future when the search fail, the tld_meta_u->cnt is stored
in the non-positive range of the key. Next time, __tld_fetch_key()
will be called only if there are new TLDs and the search will start
from the newly added tld_meta_u->metadata using the old
tld_meta_u-cnt.
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20250730185903.3574598-3-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Amery Hung
|
86de56487e |
bpf: Allow syscall bpf programs to call non-recur helpers
Allow syscall programs to call non-recur helpers too since syscall bpf
programs runs in process context through bpf syscall, BPF_PROG_TEST_RUN,
and cannot run recursively.
bpf_task_storage_{get,set} have "_recur" versions that call trylock
instead of taking the lock directly to avoid deadlock when called by
bpf programs that run recursively. Currently, only bpf_lsm, bpf_iter,
struct_ops without private stack are allow to call the non-recur helpers
since they cannot be recursively called in another bpf program.
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20250730185903.3574598-2-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
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Linus Torvalds
|
a6923c06a3 |
bpf-fixes
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Linus Torvalds
|
f4f346c346 |
[GIT PULL] perf tools changes for v6.17
Build-ID processing goodies
---------------------------
Build-IDs are content based hashes to link regions of memory to ELF files
in post processing. They have been available in distros for quite a while:
$ file /bin/bash
/bin/bash: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV),
dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2,
BuildID[sha1]=707a1c670cd72f8e55ffedfbe94ea98901b7ce3a,
for GNU/Linux 3.2.0, stripped
It is possible to ask the kernel to get it from mmap executable backing
storage at time they are being put in place and send it as metadata at
that moment to have in perf.data.
Prefer that across the board to speed up 'record' time - it post processes
the samples to find binaries touched by any samples and to save them with
build-ID. It can skip reading build-ID in userspace if it comes from the
kernel.
perf record
-----------
* Make --buildid-mmap default. The kernel can generate MMAP2 events
with a build-ID from ELF header. Use that by default instead of using
inode and device ID to identify binaries. It also can be disabled
with --no-buildid-mmap.
* Use BPF for -u/--uid option to sample processes belong to a user.
BPF can track user processes more accurately and the existing logic
often fails to get the list of processes due to race with reading the
/proc filesystem.
* Generate PERF_RECORD_BPF_METADATA when it profiles BPF programs and
they have variables starting with "bpf_metadata_". This will help to
identify BPF objects used in the profile. This has been supported in
bpftool for some time and allows the recording of metadata such as
commit hashes, versions, etc, that now gets recorded in perf.data as
well.
* Collect list of DSOs touched in the sample callchains as well as in
the sample itself. This would increase the processing time at the end
of record, but can improve the data quality.
perf stat
---------
* Add a new 'drm' pseudo-PMU support like in 'hwmon'. It can collect
DRM usage stats using fdinfo in /proc.
On my Intel laptop, it shows like below:
$ perf list drm
...
drm:
drm-active-stolen-system0
[Total memory active in one or more engines. Unit: drm_i915]
drm-active-system0
[Total memory active in one or more engines. Unit: drm_i915]
drm-engine-capacity-video
[Engine capacity. Unit: drm_i915]
drm-engine-copy
[Utilization in ns. Unit: drm_i915]
drm-engine-render
[Utilization in ns. Unit: drm_i915]
drm-engine-video
[Utilization in ns. Unit: drm_i915]
...
$ sudo perf stat -a -e drm-engine-render,drm-engine-video,drm-engine-capacity-video sleep 1
Performance counter stats for 'system wide':
48,137,316,988,873 ns drm-engine-render
34,452,696,746 ns drm-engine-video
20 capacity drm-engine-capacity-video
1.002086194 seconds time elapsed
perf list
---------
* Add description for software events. The description is in JSON format
and the event parser now can handle the software events like others
(for example, it's case-insensitive and subject to wildcard matching).
$ perf list software
List of pre-defined events (to be used in -e or -M):
software:
alignment-faults
[Number of kernel handled memory alignment faults. Unit: software]
bpf-output
[An event used by BPF programs to write to the perf ring buffer. Unit: software]
cgroup-switches
[Number of context switches to a task in a different cgroup. Unit: software]
context-switches
[Number of context switches [This event is an alias of cs]. Unit: software]
cpu-clock
[Per-CPU high-resolution timer based event. Unit: software]
cpu-migrations
[Number of times a process has migrated to a new CPU [This event is an alias of migrations]. Unit: software]
cs
[Number of context switches [This event is an alias of context-switches]. Unit: software]
dummy
[A placeholder event that doesn't count anything. Unit: software]
emulation-faults
[Number of kernel handled unimplemented instruction faults handled through emulation. Unit: software]
faults
[Number of page faults [This event is an alias of page-faults]. Unit: software]
major-faults
[Number of major page faults. Major faults require I/O to handle. Unit: software]
migrations
[Number of times a process has migrated to a new CPU [This event is an alias of cpu-migrations]. Unit: software]
minor-faults
[Number of minor page faults. Minor faults don't require I/O to handle. Unit: software]
page-faults
[Number of page faults [This event is an alias of faults]. Unit: software]
task-clock
[Per-task high-resolution timer based event. Unit: software]
perf ftrace
-----------
* Add -e/--events option to perf ftrace latency to measure latency
between the two events instead of a function.
$ sudo perf ftrace latency -ab -e i915_request_wait_begin,i915_request_wait_end --hide-empty -- sleep 1
# DURATION | COUNT | GRAPH |
256 - 512 us | 4 | ###### |
2 - 4 ms | 2 | ### |
4 - 8 ms | 12 | ################### |
8 - 16 ms | 10 | ################ |
# statistics (in usec)
total time: 194915
avg time: 6961
max time: 12855
min time: 373
count: 28
* Add new function graph tracer options (--graph-opts) to display more
info like arguments and return value. They will be passed to the
kernel ftrace directly.
$ sudo perf ftrace -G vfs_write --graph-opts retval,retaddr
# tracer: function_graph
#
# CPU DURATION FUNCTION CALLS
# | | | | | | |
...
5) | mutex_unlock() { /* <-rb_simple_write+0xda/0x150 */
5) 0.188 us | local_clock(); /* <-lock_release+0x2ad/0x440 ret=0x3bf2a3cf90e */
5) | rt_mutex_slowunlock() { /* <-rb_simple_write+0xda/0x150 */
5) | _raw_spin_lock_irqsave() { /* <-rt_mutex_slowunlock+0x4f/0x200 */
5) 0.123 us | preempt_count_add(); /* <-_raw_spin_lock_irqsave+0x23/0x90 ret=0x0 */
5) 0.128 us | local_clock(); /* <-__lock_acquire.isra.0+0x17a/0x740 ret=0x3bf2a3cfc8b */
5) 0.086 us | do_raw_spin_trylock(); /* <-_raw_spin_lock_irqsave+0x4a/0x90 ret=0x1 */
5) 0.845 us | } /* _raw_spin_lock_irqsave ret=0x292 */
...
misc
----
* Add perf archive --exclude-buildids <FILE> option to skip some binaries.
The format of the FILE should be same as an output of perf buildid-list.
* Get rid of dependency of libcrypto. It was just to get SHA-1 hash so
implement it directly like in the kernel. A side effect is that it
needs -fno-strict-aliasing compiler option (again, like in the kernel).
* Convert all shell script tests to use bash.
Reviewed-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag 'perf-tools-for-v6.17-2025-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Namhyung Kim:
"Build-ID processing goodies:
Build-IDs are content based hashes to link regions of memory to ELF
files in post processing. They have been available in distros for
quite a while:
$ file /bin/bash
/bin/bash: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV),
dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2,
BuildID[sha1]=707a1c670cd72f8e55ffedfbe94ea98901b7ce3a,
for GNU/Linux 3.2.0, stripped
It is possible to ask the kernel to get it from mmap executable
backing storage at time they are being put in place and send it as
metadata at that moment to have in perf.data.
Prefer that across the board to speed up 'record' time - it post
processes the samples to find binaries touched by any samples and
to save them with build-ID. It can skip reading build-ID in
userspace if it comes from the kernel.
perf record:
* Make --buildid-mmap default. The kernel can generate MMAP2 events
with a build-ID from ELF header. Use that by default instead of using
inode and device ID to identify binaries. It also can be disabled
with --no-buildid-mmap.
* Use BPF for -u/--uid option to sample processes belong to a user.
BPF can track user processes more accurately and the existing logic
often fails to get the list of processes due to race with reading the
/proc filesystem.
* Generate PERF_RECORD_BPF_METADATA when it profiles BPF programs and
they have variables starting with "bpf_metadata_". This will help to
identify BPF objects used in the profile. This has been supported in
bpftool for some time and allows the recording of metadata such as
commit hashes, versions, etc, that now gets recorded in perf.data as
well.
* Collect list of DSOs touched in the sample callchains as well as in
the sample itself. This would increase the processing time at the end
of record, but can improve the data quality.
perf stat:
* Add a new 'drm' pseudo-PMU support like in 'hwmon'. It can collect
DRM usage stats using fdinfo in /proc.
On my Intel laptop, it shows like below:
$ perf list drm
...
drm:
drm-active-stolen-system0
[Total memory active in one or more engines. Unit: drm_i915]
drm-active-system0
[Total memory active in one or more engines. Unit: drm_i915]
drm-engine-capacity-video
[Engine capacity. Unit: drm_i915]
drm-engine-copy
[Utilization in ns. Unit: drm_i915]
drm-engine-render
[Utilization in ns. Unit: drm_i915]
drm-engine-video
[Utilization in ns. Unit: drm_i915]
...
$ sudo perf stat -a -e drm-engine-render,drm-engine-video,drm-engine-capacity-video sleep 1
Performance counter stats for 'system wide':
48,137,316,988,873 ns drm-engine-render
34,452,696,746 ns drm-engine-video
20 capacity drm-engine-capacity-video
1.002086194 seconds time elapsed
perf list
* Add description for software events. The description is in JSON format
and the event parser now can handle the software events like others
(for example, it's case-insensitive and subject to wildcard matching).
$ perf list software
List of pre-defined events (to be used in -e or -M):
software:
alignment-faults
[Number of kernel handled memory alignment faults. Unit: software]
bpf-output
[An event used by BPF programs to write to the perf ring buffer. Unit: software]
cgroup-switches
[Number of context switches to a task in a different cgroup. Unit: software]
context-switches
[Number of context switches [This event is an alias of cs]. Unit: software]
cpu-clock
[Per-CPU high-resolution timer based event. Unit: software]
cpu-migrations
[Number of times a process has migrated to a new CPU [This event is an alias of migrations]. Unit: software]
cs
[Number of context switches [This event is an alias of context-switches]. Unit: software]
dummy
[A placeholder event that doesn't count anything. Unit: software]
emulation-faults
[Number of kernel handled unimplemented instruction faults handled through emulation. Unit: software]
faults
[Number of page faults [This event is an alias of page-faults]. Unit: software]
major-faults
[Number of major page faults. Major faults require I/O to handle. Unit: software]
migrations
[Number of times a process has migrated to a new CPU [This event is an alias of cpu-migrations]. Unit: software]
minor-faults
[Number of minor page faults. Minor faults don't require I/O to handle. Unit: software]
page-faults
[Number of page faults [This event is an alias of faults]. Unit: software]
task-clock
[Per-task high-resolution timer based event. Unit: software]
perf ftrace:
* Add -e/--events option to perf ftrace latency to measure latency
between the two events instead of a function.
$ sudo perf ftrace latency -ab -e i915_request_wait_begin,i915_request_wait_end --hide-empty -- sleep 1
# DURATION | COUNT | GRAPH |
256 - 512 us | 4 | ###### |
2 - 4 ms | 2 | ### |
4 - 8 ms | 12 | ################### |
8 - 16 ms | 10 | ################ |
# statistics (in usec)
total time: 194915
avg time: 6961
max time: 12855
min time: 373
count: 28
* Add new function graph tracer options (--graph-opts) to display more
info like arguments and return value. They will be passed to the
kernel ftrace directly.
$ sudo perf ftrace -G vfs_write --graph-opts retval,retaddr
# tracer: function_graph
#
# CPU DURATION FUNCTION CALLS
# | | | | | | |
...
5) | mutex_unlock() { /* <-rb_simple_write+0xda/0x150 */
5) 0.188 us | local_clock(); /* <-lock_release+0x2ad/0x440 ret=0x3bf2a3cf90e */
5) | rt_mutex_slowunlock() { /* <-rb_simple_write+0xda/0x150 */
5) | _raw_spin_lock_irqsave() { /* <-rt_mutex_slowunlock+0x4f/0x200 */
5) 0.123 us | preempt_count_add(); /* <-_raw_spin_lock_irqsave+0x23/0x90 ret=0x0 */
5) 0.128 us | local_clock(); /* <-__lock_acquire.isra.0+0x17a/0x740 ret=0x3bf2a3cfc8b */
5) 0.086 us | do_raw_spin_trylock(); /* <-_raw_spin_lock_irqsave+0x4a/0x90 ret=0x1 */
5) 0.845 us | } /* _raw_spin_lock_irqsave ret=0x292 */
...
Misc:
* Add perf archive --exclude-buildids <FILE> option to skip some binaries.
The format of the FILE should be same as an output of perf buildid-list.
* Get rid of dependency of libcrypto. It was just to get SHA-1 hash so
implement it directly like in the kernel. A side effect is that it
needs -fno-strict-aliasing compiler option (again, like in the kernel).
* Convert all shell script tests to use bash"
* tag 'perf-tools-for-v6.17-2025-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (179 commits)
perf record: Cache build-ID of hit DSOs only
perf test: Ensure lock contention using pipe mode
perf python: Stop using deprecated PyUnicode_AsString()
perf list: Skip ABI PMUs when printing pmu values
perf list: Remove tracepoint printing code
perf tp_pmu: Add event APIs
perf tp_pmu: Factor existing tracepoint logic to new file
perf parse-events: Remove non-json software events
perf jevents: Add common software event json
perf tools: Remove libtraceevent in .gitignore
perf test: Fix comment ordering
perf sort: Use perf_env to set arch sort keys and header
perf test: Move PERF_SAMPLE_WEIGHT_STRUCT parsing to common test
perf sample: Remove arch notion of sample parsing
perf env: Remove global perf_env
perf trace: Avoid global perf_env with evsel__env
perf auxtrace: Pass perf_env from session through to mmap read
perf machine: Explicitly pass in host perf_env
perf bench synthesize: Avoid use of global perf_env
perf top: Make perf_env locally scoped
...
|
||
|
Linus Torvalds
|
0905809b38 |
parisc architecture fixes for kernel v6.17-rc1:
The parisc kernel wrongly allows reading from read-protected userspace memory without faulting, e.g. when userspace uses mprotect() to read-protect a memory area and then uses a pointer to this memory in a write(2, addr, 1) syscall. To fix this issue, Dave Anglin developed a set of patches which use the proberi assembler instruction to additionally check read access permissions at runtime. Randy Dunlap contributed two patches to fix a minor typo and to explain why a 32-bit compiler is needed although a 64-bit kernel is built. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQS86RI+GtKfB8BJu973ErUQojoPXwUCaIz+oAAKCRD3ErUQojoP Xy2WAQDMnAWKA62nvsWnwYYtHK7t8tA03XPJ4HlcEOW+EKdW1AEA3yKFBnDQMEm1 zXrjzavY044/00u1Wba3glExQ3Vo0go= =0F3R -----END PGP SIGNATURE----- Merge tag 'parisc-for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc updates from Helge Deller: - The parisc kernel wrongly allows reading from read-protected userspace memory without faulting, e.g. when userspace uses mprotect() to read-protect a memory area and then uses a pointer to this memory in a write(2, addr, 1) syscall. To fix this issue, Dave Anglin developed a set of patches which use the proberi assembler instruction to additionally check read access permissions at runtime. - Randy Dunlap contributed two patches to fix a minor typo and to explain why a 32-bit compiler is needed although a 64-bit kernel is built * tag 'parisc-for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Revise __get_user() to probe user read access parisc: Revise gateway LWS calls to probe user read access parisc: Drop WARN_ON_ONCE() from flush_cache_vmap parisc: Try to fixup kernel exception in bad_area_nosemaphore path of do_page_fault() parisc: Define and use set_pte_at() parisc: Rename pte_needs_flush() to pte_needs_cache_flush() in cache.c parisc: Check region is readable by user in raw_copy_from_user() parisc: Update comments in make_insert_tlb parisc: Makefile: explain that 64BIT requires both 32-bit and 64-bit compilers parisc: Makefile: fix a typo in palo.conf |
||
Steven Rostedt
|
3ca824369b |
tracing: Have unsigned int function args displayed as hexadecimal
Most function arguments that are passed in as unsigned int or unsigned
long are better displayed as hexadecimal than normal integer. For example,
the functions:
static void __create_object(unsigned long ptr, size_t size,
int min_count, gfp_t gfp, unsigned int objflags);
static bool stack_access_ok(struct unwind_state *state, unsigned long _addr,
size_t len);
void __local_bh_disable_ip(unsigned long ip, unsigned int cnt);
Show up in the trace as:
__create_object(ptr=-131387050520576, size=4096, min_count=1, gfp=3264, objflags=0) <-kmem_cache_alloc_noprof
stack_access_ok(state=0xffffc9000233fc98, _addr=-60473102566256, len=8) <-unwind_next_frame
__local_bh_disable_ip(ip=-2127311112, cnt=256) <-handle_softirqs
Instead, by displaying unsigned as hexadecimal, they look more like this:
__create_object(ptr=0xffff8881028d2080, size=0x280, min_count=1, gfp=0x82820, objflags=0x0) <-kmem_cache_alloc_node_noprof
stack_access_ok(state=0xffffc90000003938, _addr=0xffffc90000003930, len=0x8) <-unwind_next_frame
__local_bh_disable_ip(ip=0xffffffff8133cef8, cnt=0x100) <-handle_softirqs
Which is much easier to understand as most unsigned longs are usually just
pointers. Even the "unsigned int cnt" in __local_bh_disable_ip() looks
better as hexadecimal as a lot of flags are passed as unsigned.
Changes since v2: https://lore.kernel.org/20250801111453.01502861@gandalf.local.home
- Use btf_int_encoding() instead of open coding it (Martin KaFai Lau)
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Douglas Raillard <douglas.raillard@arm.com>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Link: https://lore.kernel.org/20250801165601.7770d65c@gandalf.local.home
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
|
||
|
Linus Torvalds
|
d41e5839d8 |
cxl for v6.17
- Add documentation template for CXL conventions to document CXL platform quirks
- Replace mutex_lock_io() with mutex_lock() for mailbox
- Add location limit for fake CFMWS range for cxl_test, ARM platform enabling
- CXL documentation typo and clarity fixes
- Use correct format specifier for function cxl_set_ecs_threshold()
- Make cxl_bus_type constant
- Introduce new helper cxl_resource_contains_addr() to check address availability
- Fix wrong DPA checking for PPR operation
- Remove core/acpi.c and CXL core dependency on ACPI
- Introduce ACQUIRE() and ACQUIRE_ERR() for conditional locks
- Add CXL updates utilizing ACQUIRE() macro to remove gotos and improve
readability
- Add return for the dummy version of cxl_decoder_detach() without CONFIG_CXL_REGION
- CXL events updates for spec r3.2
- Fix return of __cxl_decoder_detach() error path
- CXL debugfs documentation fix
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Merge tag 'cxl-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL updates from Dave Jiang:
"The most significant changes in this pull request is the series that
introduces ACQUIRE() and ACQUIRE_ERR() macros to replace conditional
locking and ease the pain points of scoped_cond_guard().
The series also includes follow on changes that refactor the CXL
sub-system to utilize the new macros.
Detail summary:
- Add documentation template for CXL conventions to document CXL
platform quirks
- Replace mutex_lock_io() with mutex_lock() for mailbox
- Add location limit for fake CFMWS range for cxl_test, ARM platform
enabling
- CXL documentation typo and clarity fixes
- Use correct format specifier for function cxl_set_ecs_threshold()
- Make cxl_bus_type constant
- Introduce new helper cxl_resource_contains_addr() to check address
availability
- Fix wrong DPA checking for PPR operation
- Remove core/acpi.c and CXL core dependency on ACPI
- Introduce ACQUIRE() and ACQUIRE_ERR() for conditional locks
- Add CXL updates utilizing ACQUIRE() macro to remove gotos and
improve readability
- Add return for the dummy version of cxl_decoder_detach() without
CONFIG_CXL_REGION
- CXL events updates for spec r3.2
- Fix return of __cxl_decoder_detach() error path
- CXL debugfs documentation fix"
* tag 'cxl-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (28 commits)
Documentation/ABI/testing/debugfs-cxl: Add 'cxl' to clear_poison path
cxl/region: Fix an ERR_PTR() vs NULL bug
cxl/events: Trace Memory Sparing Event Record
cxl/events: Add extra validity checks for CVME count in DRAM Event Record
cxl/events: Add extra validity checks for corrected memory error count in General Media Event Record
cxl/events: Update Common Event Record to CXL spec rev 3.2
cxl: Fix -Werror=return-type in cxl_decoder_detach()
cleanup: Fix documentation build error for ACQUIRE updates
cxl: Convert to ACQUIRE() for conditional rwsem locking
cxl/region: Consolidate cxl_decoder_kill_region() and cxl_region_detach()
cxl/region: Move ready-to-probe state check to a helper
cxl/region: Split commit_store() into __commit() and queue_reset() helpers
cxl/decoder: Drop pointless locking
cxl/decoder: Move decoder register programming to a helper
cxl/mbox: Convert poison list mutex to ACQUIRE()
cleanup: Introduce ACQUIRE() and ACQUIRE_ERR() for conditional locks
cxl: Remove core/acpi.c and cxl core dependency on ACPI
cxl/core: Using cxl_resource_contains_addr() to check address availability
cxl/edac: Fix wrong dpa checking for PPR operation
cxl/core: Introduce a new helper cxl_resource_contains_addr()
...
|
||
Sharath Chandra Vurukala
|
1dbf1d590d |
net: Add locking to protect skb->dev access in ip_output
In ip_output() skb->dev is updated from the skb_dst(skb)->dev this can become invalid when the interface is unregistered and freed, Introduced new skb_dst_dev_rcu() function to be used instead of skb_dst_dev() within rcu_locks in ip_output.This will ensure that all the skb's associated with the dev being deregistered will be transnmitted out first, before freeing the dev. Given that ip_output() is called within an rcu_read_lock() critical section or from a bottom-half context, it is safe to introduce an RCU read-side critical section within it. Multiple panic call stacks were observed when UL traffic was run in concurrency with device deregistration from different functions, pasting one sample for reference. [496733.627565][T13385] Call trace: [496733.627570][T13385] bpf_prog_ce7c9180c3b128ea_cgroupskb_egres+0x24c/0x7f0 [496733.627581][T13385] __cgroup_bpf_run_filter_skb+0x128/0x498 [496733.627595][T13385] ip_finish_output+0xa4/0xf4 [496733.627605][T13385] ip_output+0x100/0x1a0 [496733.627613][T13385] ip_send_skb+0x68/0x100 [496733.627618][T13385] udp_send_skb+0x1c4/0x384 [496733.627625][T13385] udp_sendmsg+0x7b0/0x898 [496733.627631][T13385] inet_sendmsg+0x5c/0x7c [496733.627639][T13385] __sys_sendto+0x174/0x1e4 [496733.627647][T13385] __arm64_sys_sendto+0x28/0x3c [496733.627653][T13385] invoke_syscall+0x58/0x11c [496733.627662][T13385] el0_svc_common+0x88/0xf4 [496733.627669][T13385] do_el0_svc+0x2c/0xb0 [496733.627676][T13385] el0_svc+0x2c/0xa4 [496733.627683][T13385] el0t_64_sync_handler+0x68/0xb4 [496733.627689][T13385] el0t_64_sync+0x1a4/0x1a8 Changes in v3: - Replaced WARN_ON() with WARN_ON_ONCE(), as suggested by Willem de Bruijn. - Dropped legacy lines mistakenly pulled in from an outdated branch. Changes in v2: - Addressed review comments from Eric Dumazet - Used READ_ONCE() to prevent potential load/store tearing - Added skb_dst_dev_rcu() and used along with rcu_read_lock() in ip_output Signed-off-by: Sharath Chandra Vurukala <quic_sharathv@quicinc.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250730105118.GA26100@hu-sharathv-hyd.qualcomm.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
Takamitsu Iwai
|
ae8508b25d |
net/sched: taprio: enforce minimum value for picos_per_byte
Syzbot reported a WARNING in taprio_get_start_time().
When link speed is 470,589 or greater, q->picos_per_byte becomes too
small, causing length_to_duration(q, ETH_ZLEN) to return zero.
This zero value leads to validation failures in fill_sched_entry() and
parse_taprio_schedule(), allowing arbitrary values to be assigned to
entry->interval and cycle_time. As a result, sched->cycle can become zero.
Since SPEED_800000 is the largest defined speed in
include/uapi/linux/ethtool.h, this issue can occur in realistic scenarios.
To ensure length_to_duration() returns a non-zero value for minimum-sized
Ethernet frames (ETH_ZLEN = 60), picos_per_byte must be at least 17
(60 * 17 > PSEC_PER_NSEC which is 1000).
This patch enforces a minimum value of 17 for picos_per_byte when the
calculated value would be lower, and adds a warning message to inform
users that scheduling accuracy may be affected at very high link speeds.
Fixes:
|
||
Wang Liang
|
d46e51f1c7 |
net: drop UFO packets in udp_rcv_segment()
When sending a packet with virtio_net_hdr to tun device, if the gso_type in virtio_net_hdr is SKB_GSO_UDP and the gso_size is less than udphdr size, below crash may happen. ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:4572! Oops: invalid opcode: 0000 [#1] SMP NOPTI CPU: 0 UID: 0 PID: 62 Comm: mytest Not tainted 6.16.0-rc7 #203 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:skb_pull_rcsum+0x8e/0xa0 Code: 00 00 5b c3 cc cc cc cc 8b 93 88 00 00 00 f7 da e8 37 44 38 00 f7 d8 89 83 88 00 00 00 48 8b 83 c8 00 00 00 5b c3 cc cc cc cc <0f> 0b 0f 0b 66 66 2e 0f 1f 84 00 000 RSP: 0018:ffffc900001fba38 EFLAGS: 00000297 RAX: 0000000000000004 RBX: ffff8880040c1000 RCX: ffffc900001fb948 RDX: ffff888003e6d700 RSI: 0000000000000008 RDI: ffff88800411a062 RBP: ffff8880040c1000 R08: 0000000000000000 R09: 0000000000000001 R10: ffff888003606c00 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888004060900 R14: ffff888004050000 R15: ffff888004060900 FS: 000000002406d3c0(0000) GS:ffff888084a19000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 0000000004007000 CR4: 00000000000006f0 Call Trace: <TASK> udp_queue_rcv_one_skb+0x176/0x4b0 net/ipv4/udp.c:2445 udp_queue_rcv_skb+0x155/0x1f0 net/ipv4/udp.c:2475 udp_unicast_rcv_skb+0x71/0x90 net/ipv4/udp.c:2626 __udp4_lib_rcv+0x433/0xb00 net/ipv4/udp.c:2690 ip_protocol_deliver_rcu+0xa6/0x160 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x72/0x90 net/ipv4/ip_input.c:233 ip_sublist_rcv_finish+0x5f/0x70 net/ipv4/ip_input.c:579 ip_sublist_rcv+0x122/0x1b0 net/ipv4/ip_input.c:636 ip_list_rcv+0xf7/0x130 net/ipv4/ip_input.c:670 __netif_receive_skb_list_core+0x21d/0x240 net/core/dev.c:6067 netif_receive_skb_list_internal+0x186/0x2b0 net/core/dev.c:6210 napi_complete_done+0x78/0x180 net/core/dev.c:6580 tun_get_user+0xa63/0x1120 drivers/net/tun.c:1909 tun_chr_write_iter+0x65/0xb0 drivers/net/tun.c:1984 vfs_write+0x300/0x420 fs/read_write.c:593 ksys_write+0x60/0xd0 fs/read_write.c:686 do_syscall_64+0x50/0x1c0 arch/x86/entry/syscall_64.c:63 </TASK> To trigger gso segment in udp_queue_rcv_skb(), we should also set option UDP_ENCAP_ESPINUDP to enable udp_sk(sk)->encap_rcv. When the encap_rcv hook return 1 in udp_queue_rcv_one_skb(), udp_csum_pull_header() will try to pull udphdr, but the skb size has been segmented to gso size, which leads to this crash. Previous commit |
||
|
Linus Torvalds
|
111857421c |
remoteproc updates for v6.17
Make the Xilinx remoteproc driver support running on only a single core, disable still unsupported remoteproc features, and stop the remoteproc on shutdown to facilitate kexec. Conclude the renaming of the Qualcomm ADSP driver to "PAS" that was started many years ago. -----BEGIN PGP SIGNATURE----- iQJJBAABCAAzFiEEBd4DzF816k8JZtUlCx85Pw2ZrcUFAmiNGowVHGFuZGVyc3Nv bkBrZXJuZWwub3JnAAoJEAsfOT8Nma3FUYYQAKByyveRNeRaOKYcbHCLUsGwVZ5A 4JIXqIrHcIjPgcPNLvCudhz8n+Bp5pNxNEu03yDaSu5QkHz2gDEYZ83ZIvFeKiax cd3r/DtdnlHKRArJlx6un9lhi3veXOwbyE7GA6lPZ/jKz4usqbSGX3aSAeAK0g2D DiMISRMfBeHUl9cXtawL5lQSKl7GELJq2gz2+mY1mUivhplzSIgcIrQuF6w1pFNt 20Sad5jhgOm0ELMNuLY7YuWYKon56OUwjF5T0wZetpwHmvJ/vv18Z1CLwSm9iwaG T3IXLFL1ED28sdCT3cfpbxnp6S7pn1MhzNYVYN6RImlZmtAz9YW5zJrj4EwVu0Bk K4e+UC2BkechT7lOxjFL5qhsZpkUrQZXccTf3fARn0GeCBlyfjTRMp3He8wJLDx1 FemCM7OXSc2OXnAm2231BxHu2T0MRY5Z3ozPJEeg0M3hj5oaWBflctp+puOoBwBe g4VcY8yQ3qAzfts7RgyB9gjRQ8KhJ6FABmZZv2RVTtdjsH3Sa1MLB3T+PzvNW2z4 L9/t4cIvp4xMXKztJVzVsaHAPw2P/ZRIo+Xfg6AgIvZ0ebM9ZSTe2rGHX/2tE14o FWEUs7g58RE5NcJIqqyDaIfBrgvG8HQiLOf37uZDboCFV/Z4RP8Z6pHa8+YyiDvB 8LtKweBQGD/MmgcC =yhyx -----END PGP SIGNATURE----- Merge tag 'rproc-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux Pull remoteproc updates from Bjorn Andersson: - Make the Xilinx remoteproc driver support running on only a single core, disable still unsupported remoteproc features, and stop the remoteproc on shutdown to facilitate kexec. - Conclude the renaming of the Qualcomm ADSP driver to "PAS" that was started many years ago. * tag 'rproc-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux: remoteproc: xlnx: Fix kernel-doc warnings remoteproc: xlnx: Disable unsupported features remoteproc: xlnx: Add shutdown callback remoteproc: xlnx: Allow single core use in split mode dt-bindings: remoteproc: qcom,sa8775p-pas: Correct the interrupt number remoteproc: Don't use %pK through printk dt-bindings: remoteproc: qcom,sm8150-pas: Document QCS615 remoteproc remoteproc: qcom: pas: Conclude the rename from adsp |
||
Paul Chaignon
|
d8d2d9d12f |
selftests/bpf: Test for unaligned flow_dissector ctx access
This patch adds tests for two context fields where unaligned accesses were not properly rejected. Note the new macro is similar to the existing narrow_load macro, but we need a different description and access offset. Combining the two macros into one is probably doable but I don't think it would help readability. vmlinux.h is included in place of bpf.h so we have the definition of struct bpf_nf_ctx. Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com> Tested-by: Eduard Zingerman <eddyz87@gmail.com> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/bf014046ddcf41677fb8b98d150c14027e9fddba.1754039605.git.paul.chaignon@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
Florian Fainelli
|
a81649a4ef |
net: mdio: mdio-bcm-unimac: Correct rate fallback logic
When the parent clock is a gated clock which has multiple parents, the clock provider (clk-scmi typically) might return a rate of 0 since there is not one of those particular parent clocks that should be chosen for returning a rate. Prior to |
||
Eric Dumazet
|
d45cf1e7d7 |
ipv6: reject malicious packets in ipv6_gso_segment()
syzbot was able to craft a packet with very long IPv6 extension headers
leading to an overflow of skb->transport_header.
This 16bit field has a limited range.
Add skb_reset_transport_header_careful() helper and use it
from ipv6_gso_segment()
WARNING: CPU: 0 PID: 5871 at ./include/linux/skbuff.h:3032 skb_reset_transport_header include/linux/skbuff.h:3032 [inline]
WARNING: CPU: 0 PID: 5871 at ./include/linux/skbuff.h:3032 ipv6_gso_segment+0x15e2/0x21e0 net/ipv6/ip6_offload.c:151
Modules linked in:
CPU: 0 UID: 0 PID: 5871 Comm: syz-executor211 Not tainted 6.16.0-rc6-syzkaller-g7abc678e3084 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:skb_reset_transport_header include/linux/skbuff.h:3032 [inline]
RIP: 0010:ipv6_gso_segment+0x15e2/0x21e0 net/ipv6/ip6_offload.c:151
Call Trace:
<TASK>
skb_mac_gso_segment+0x31c/0x640 net/core/gso.c:53
nsh_gso_segment+0x54a/0xe10 net/nsh/nsh.c:110
skb_mac_gso_segment+0x31c/0x640 net/core/gso.c:53
__skb_gso_segment+0x342/0x510 net/core/gso.c:124
skb_gso_segment include/net/gso.h:83 [inline]
validate_xmit_skb+0x857/0x11b0 net/core/dev.c:3950
validate_xmit_skb_list+0x84/0x120 net/core/dev.c:4000
sch_direct_xmit+0xd3/0x4b0 net/sched/sch_generic.c:329
__dev_xmit_skb net/core/dev.c:4102 [inline]
__dev_queue_xmit+0x17b6/0x3a70 net/core/dev.c:4679
Fixes:
|
||
|
Eric Dumazet
|
7cbd49795d |
selftests: avoid using ifconfig
ifconfig is deprecated and not always present, use ip command instead.
Fixes:
|
||
Geert Uytterhoeven
|
a4f0866e3d |
dpll: Make ZL3073X invisible
Currently, the user is always asked about the Microchip Azurite
DPLL/PTP/SyncE core driver, even when I2C and SPI are disabled, and thus
the driver cannot be used at all.
Fix this by making the Kconfig symbol for the core driver invisible
(unless compile-testing), and selecting it by the bus glue sub-drivers.
Drop the modular defaults, as drivers should not default to enabled.
Fixes:
|
||
Christoph Paasch
|
77bf1c55b2 |
net/mlx5: Correctly set gso_segs when LRO is used
When gso_segs is left at 0, a number of assumptions will end up being incorrect throughout the stack. For example, in the GRO-path, we set NAPI_GRO_CB()->count to gso_segs. So, if a non-LRO'ed packet followed by an LRO'ed packet is being processed in GRO, the first one will have NAPI_GRO_CB()->count set to 1 and the next one to 0 (in dev_gro_receive()). Since commit |
||
|
Linus Torvalds
|
821c9e515d |
virtio, vhost: features, fixes
vhost can now support legacy threading if enabled in Kconfig vsock memory allocation strategies for large buffers have been improved, reducing pressure on kmalloc vhost now supports the in-order feature guest bits missed the merge window fixes, cleanups all over the place Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCgAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmiMvQEPHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRpgr8IAKUrIjqqTYXLkbCWn6tK8T+LxZ6LkMkyHA1v AJ+y5fKDeLsT5QpusD1XRjXJVqXBwQEsTN0pNVuhWHlcCpUeOFEHuJaf/QMncbc3 deFlUfMa3ihniUxBuyhojlWURsf94uTC906lCFXlIsfSKH2CW6/SjKvqR0SH5PhN 5WaqRYiSFFwDlyG2Ul4e5temP/er2KuZfYyvcYCU8VdSEp6bjvqCHd9ztFIVuByp fFWsrHce6IqR8ixOOzavEjzfd8WAN3LGzXntj5KEaX3fZ6HxCZCMv+rNVqvJmLps cSrTgIUo60nCiZb8klUCS1YTEEvmdmJg3UmmddIpIhcsCYJSbOU= =2dxm -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull virtio updates from Michael Tsirkin: - vhost can now support legacy threading if enabled in Kconfig - vsock memory allocation strategies for large buffers have been improved, reducing pressure on kmalloc - vhost now supports the in-order feature. guest bits missed the merge window. - fixes, cleanups all over the place * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (30 commits) vsock/virtio: Allocate nonlinear SKBs for handling large transmit buffers vsock/virtio: Rename virtio_vsock_skb_rx_put() vhost/vsock: Allocate nonlinear SKBs for handling large receive buffers vsock/virtio: Move SKB allocation lower-bound check to callers vsock/virtio: Rename virtio_vsock_alloc_skb() vsock/virtio: Resize receive buffers so that each SKB fits in a 4K page vsock/virtio: Move length check to callers of virtio_vsock_skb_rx_put() vsock/virtio: Validate length in packet header before skb_put() vhost/vsock: Avoid allocating arbitrarily-sized SKBs vhost_net: basic in_order support vhost: basic in order support vhost: fail early when __vhost_add_used() fails vhost: Reintroduce kthread API and add mode selection vdpa: Fix IDR memory leak in VDUSE module exit vdpa/mlx5: Fix release of uninitialized resources on error path vhost-scsi: Fix check for inline_sg_cnt exceeding preallocated limit virtio: virtio_dma_buf: fix missing parameter documentation vhost: Fix typos vhost: vringh: Remove unused functions vhost: vringh: Remove unused iotlb functions ... |
||
Edward Cree
|
60bda1ba06 |
sfc: unfix not-a-typo in comment
Commit
|
||
|
Linus Torvalds
|
0bd0a41a51 |
pci-v6.17-changes
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Merge tag 'pci-v6.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Allow built-in drivers, not just modular drivers, to use async
initial probing (Lukas Wunner)
- Support Immediate Readiness even on devices with no PM Capability
(Sean Christopherson)
- Consolidate definition of PCIE_RESET_CONFIG_WAIT_MS (100ms), the
required delay between a reset and sending config requests to a
device (Niklas Cassel)
- Add pci_is_display() to check for "Display" base class and use it
in ALSA hda, vfio, vga_switcheroo, vt-d (Mario Limonciello)
- Allow 'isolated PCI functions' (multi-function devices without a
function 0) for LoongArch, similar to s390 and jailhouse (Huacai
Chen)
Power control:
- Add ability to enable optional slot clock for cases where the PCIe
host controller and the slot are supplied by different clocks
(Marek Vasut)
PCIe native device hotplug:
- Fix runtime PM ref imbalance on Hot-Plug Capable ports caused by
misinterpreting a config read failure after a device has been
removed (Lukas Wunner)
- Avoid creating a useless PCIe port service device for pciehp if the
slot is handled by the ACPI hotplug driver (Lukas Wunner)
- Ignore ACPI hotplug slots when calculating depth of pciehp hotplug
ports (Lukas Wunner)
Virtualization:
- Save VF resizable BAR state and restore it after reset (Michał
Winiarski)
- Allow IOV resources (VF BARs) to be resized (Michał Winiarski)
- Add pci_iov_vf_bar_set_size() so drivers can control VF BAR size
(Michał Winiarski)
Endpoint framework:
- Add RC-to-EP doorbell support using platform MSI controller,
including a test case (Frank Li)
- Allow BAR assignment via configfs so platforms have flexibility in
determining BAR usage (Jerome Brunet)
Native PCIe controller drivers:
- Convert amazon,al-alpine-v[23]-pcie, apm,xgene-pcie,
axis,artpec6-pcie, marvell,armada-3700-pcie, st,spear1340-pcie to
DT schema format (Rob Herring)
- Use dev_fwnode() instead of of_fwnode_handle() to remove OF
dependency in altera (fixes an unused variable), designware-host,
mediatek, mediatek-gen3, mobiveil, plda, xilinx, xilinx-dma,
xilinx-nwl (Jiri Slaby, Arnd Bergmann)
- Convert aardvark, altera, brcmstb, designware-host, iproc,
mediatek, mediatek-gen3, mobiveil, plda, rcar-host, vmd, xilinx,
xilinx-dma, xilinx-nwl from using pci_msi_create_irq_domain() to
using msi_create_parent_irq_domain() instead; this makes the
interrupt controller per-PCI device, allows dynamic allocation of
vectors after initialization, and allows support of IMS (Nam Cao)
APM X-Gene PCIe controller driver:
- Rewrite MSI handling to MSI CPU affinity, drop useless CPU hotplug
bits, use device-managed memory allocations, and clean things up
(Marc Zyngier)
- Probe xgene-msi as a standard platform driver rather than a
subsys_initcall (Marc Zyngier)
Broadcom STB PCIe controller driver:
- Add optional DT 'num-lanes' property and if present, use it to
override the Maximum Link Width advertised in Link Capabilities
(Jim Quinlan)
Cadence PCIe controller driver:
- Use PCIe Message routing types from the PCI core rather than
defining private ones (Hans Zhang)
Freescale i.MX6 PCIe controller driver:
- Add IMX8MQ_EP third 64-bit BAR in epc_features (Richard Zhu)
- Add IMX8MM_EP and IMX8MP_EP fixed 256-byte BAR 4 in epc_features
(Richard Zhu)
- Configure LUT for MSI/IOMMU in Endpoint mode so Root Complex can
trigger doorbel on Endpoint (Frank Li)
- Remove apps_reset (LTSSM_EN) from
imx_pcie_{assert,deassert}_core_reset(), which fixes a hotplug
regression on i.MX8MM (Richard Zhu)
- Delay Endpoint link start until configfs 'start' written (Richard
Zhu)
Intel VMD host bridge driver:
- Add Intel Panther Lake (PTL)-H/P/U Vendor ID (George D Sworo)
Qualcomm PCIe controller driver:
- Add DT binding and driver support for SA8255p, which supports ECAM
for Configuration Space access (Mayank Rana)
- Update DT binding and driver to describe PHYs and per-Root Port
resets in a Root Port stanza and deprecate describing them in the
host bridge; this makes it possible to support multiple Root Ports
in the future (Krishna Chaitanya Chundru)
- Add Qualcomm QCS615 to SM8150 DT binding (Ziyue Zhang)
- Add Qualcomm QCS8300 to SA8775p DT binding (Ziyue Zhang)
- Drop TBU and ref clocks from Qualcomm SM8150 and SC8180x DT
bindings (Konrad Dybcio)
- Document 'link_down' reset in Qualcomm SA8775P DT binding (Ziyue
Zhang)
- Add required PCIE_RESET_CONFIG_WAIT_MS delay after Link up IRQ
(Niklas Cassel)
Rockchip PCIe controller driver:
- Drop unused PCIe Message routing and code definitions (Hans Zhang)
- Remove several unused header includes (Hans Zhang)
- Use standard PCIe config register definitions instead of
rockchip-specific redefinitions (Geraldo Nascimento)
- Set Target Link Speed to 5.0 GT/s before retraining so we have a
chance to train at a higher speed (Geraldo Nascimento)
Rockchip DesignWare PCIe controller driver:
- Prevent race between link training and register update via DBI by
inhibiting link training after hot reset and link down (Wilfred
Mallawa)
- Add required PCIE_RESET_CONFIG_WAIT_MS delay after Link up IRQ
(Niklas Cassel)
Sophgo PCIe controller driver:
- Add DT binding and driver for Sophgo SG2044 PCIe controller driver
in Root Complex mode (Inochi Amaoto)
Synopsys DesignWare PCIe controller driver:
- Add required PCIE_RESET_CONFIG_WAIT_MS after waiting for Link up on
Ports that support > 5.0 GT/s. Slower Ports still rely on the
not-quite-correct PCIE_LINK_WAIT_SLEEP_MS 90ms default delay while
waiting for the Link (Niklas Cassel)"
* tag 'pci-v6.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (116 commits)
dt-bindings: PCI: qcom,pcie-sa8775p: Document 'link_down' reset
dt-bindings: PCI: Remove 83xx-512x-pci.txt
dt-bindings: PCI: Convert amazon,al-alpine-v[23]-pcie to DT schema
dt-bindings: PCI: Convert marvell,armada-3700-pcie to DT schema
dt-bindings: PCI: Convert apm,xgene-pcie to DT schema
dt-bindings: PCI: Convert axis,artpec6-pcie to DT schema
dt-bindings: PCI: Convert st,spear1340-pcie to DT schema
PCI: Move is_pciehp check out of pciehp_is_native()
PCI: pciehp: Use is_pciehp instead of is_hotplug_bridge
PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge
PCI/ACPI: Fix runtime PM ref imbalance on Hot-Plug Capable ports
selftests: pci_endpoint: Add doorbell test case
misc: pci_endpoint_test: Add doorbell test case
PCI: endpoint: pci-epf-test: Add doorbell test support
PCI: endpoint: Add pci_epf_align_inbound_addr() helper for inbound address alignment
PCI: endpoint: pci-ep-msi: Add checks for MSI parent and mutability
PCI: endpoint: Add RC-to-EP doorbell support using platform MSI controller
PCI: dwc: Add Sophgo SG2044 PCIe controller driver in Root Complex mode
PCI: vmd: Switch to msi_create_parent_irq_domain()
PCI: vmd: Convert to lock guards
...
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Lorenzo Bianconi
|
38358fa3cc |
net: airoha: Fix PPE table access in airoha_ppe_debugfs_foe_show()
In order to avoid any possible race we need to hold the ppe_lock
spinlock accessing the hw PPE table. airoha_ppe_foe_get_entry routine is
always executed holding ppe_lock except in airoha_ppe_debugfs_foe_show
routine. Fix the problem introducing airoha_ppe_foe_get_entry_locked
routine.
Fixes:
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Ido Schimmel
|
f8fded7536 |
selftests: net: Fix flaky neighbor garbage collection test
The purpose of the "Periodic garbage collection" test case is to make
sure that "extern_valid" neighbors are not flushed during periodic
garbage collection, unlike regular neighbor entries.
The test case is currently doing the following:
1. Changing the base reachable time to 10 seconds so that periodic
garbage collection will run every 5 seconds.
2. Changing the garbage collection stale time to 5 seconds so that
neighbors that have not been used in the last 5 seconds will be
considered for removal.
3. Waiting for the base reachable time change to take effect.
4. Adding an "extern_valid" neighbor, a non-"extern_valid" neighbor and
a bunch of other neighbors so that the threshold ("thresh1") will be
crossed and stale neighbors will be flushed during garbage
collection.
5. Waiting for 10 seconds to give garbage collection a chance to run.
6. Checking that the "extern_valid" neighbor was not flushed and that
the non-"extern_valid" neighbor was flushed.
The test sometimes fails in the netdev CI because the non-"extern_valid"
neighbor was not flushed. I am unable to reproduce this locally, but my
theory that since we do not know exactly when the periodic garbage
collection runs, it is possible for it to run at a time when the
non-"extern_valid" neighbor is still not considered stale.
Fix by moving the addition of the two neighbors before step 3 and by
reducing the garbage collection stale time to 1 second, to ensure that
both neighbors are considered stale when garbage collection runs.
Fixes:
|
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Steven Rostedt
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db5f0c3e3e |
ring-buffer: Convert ring_buffer_write() to use guard(preempt_notrace)
The function ring_buffer_write() has a goto out to only do a preempt_enable_notrace(). This can be replaced by a guard. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/20250801203858.205479143@kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Steven Rostedt
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12d5189615 |
tracing: Use __free(kfree) in trace.c to remove gotos
There's a couple of locations that have goto out in trace.c for the only purpose of freeing a variable that was allocated. These can be replaced with __free(kfree). Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/20250801203858.040892777@kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Steven Rostedt
|
debe57fbe1 |
tracing: Add guard() around locks and mutexes in trace.c
There's several locations in trace.c that can be simplified by using guards around raw_spin_lock_irqsave, mutexes and preempt disabling. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/20250801203857.879085376@kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Steven Rostedt
|
788fa4b47c |
tracing: Add guard(ring_buffer_nest)
Some calls to the tracing ring buffer can happen when the ring buffer is already being written to by the same context (for example, a trace_printk() in between a ring_buffer_lock_reserve() and a ring_buffer_unlock_commit()). In order to not trigger the recursion detection, these functions use ring_buffer_nest_start() and ring_buffer_nest_end(). Create a guard() for these functions so that their use cases can be simplified and not need to use goto for the release. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/20250801203857.710501021@kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Steven Rostedt
|
c89504a703 |
tracing: Remove unneeded goto out logic
Several places in the trace.c file there's a goto out where the out is simply a return. There's no reason to jump to the out label if it's not doing any more logic but simply returning from the function. Replace the goto outs with a return and remove the out labels. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/20250801203857.538726745@kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Linus Torvalds
|
877d94c74e |
linux-watchdog 6.17-rc1 tag
-----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) iEYEABECAAYFAmiMtmUACgkQ+iyteGJfRsqMPACfTSyOYSTEb7I3C1zG6GL6908D aI8AoIJq4TaJOjcqs7smi2OcGPg9Spki =mrG8 -----END PGP SIGNATURE----- Merge tag 'linux-watchdog-6.17-rc1' of git://www.linux-watchdog.org/linux-watchdog Pull watchdog updates from Wim Van Sebroeck: - sbsa: Adjust keepalive timeout to avoid MediaTek WS0 race condition - Various improvements and fixes * tag 'linux-watchdog-6.17-rc1' of git://www.linux-watchdog.org/linux-watchdog: watchdog: sbsa: Adjust keepalive timeout to avoid MediaTek WS0 race condition watchdog: dw_wdt: Fix default timeout watchdog: Don't use "proxy" headers watchdog: it87_wdt: Don't use "proxy" headers watchdog: renesas_wdt: Convert to DEFINE_SIMPLE_DEV_PM_OPS() watchdog: iTCO_wdt: Report error if timeout configuration fails watchdog: rti_wdt: Use of_reserved_mem_region_to_resource() for "memory-region" dt-bindings: watchdog: nxp,pnx4008-wdt: allow clocks property watchdog: ziirave_wdt: check record length in ziirave_firm_verify() |
||
Colin Ian King
|
f8b99c61a8 |
drm/i915/bw: Remove space before newline
There is an extraneous space before a newline in a drm_dbg_kms message. Remove the space. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> Link: https://lore.kernel.org/r/20250801164658.2438212-1-colin.i.king@gmail.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> |
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Mark Brown
|
5bbb3913b7 |
Add audio support for acp7.2 platform
Merge series from Venkata Prasad Potturu <venkataprasad.potturu@amd.com>: This patch series is to add legacy and sof audio support for acp7.2 platform. |
||
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Linus Torvalds
|
196dacf454 |
dmaengine updates for v6.17
Core: - Managed API for dma channel request New support: - Sophgo CV18XX/SG200X dmamux driver - Qualcomm Milos GPI, sc8280xp GPI support Updates: - Conversion of brcm,iproc-sba and marvell,orion-xor binding - Unused code cleanup across drivers -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE+vs47OPLdNbVcHzyfBQHDyUjg0cFAmiMsksACgkQfBQHDyUj g0dYdhAAi/ekDqoTUjGSaUAL2Bq2sMn4yxt45p6z1sBNIyCt6D1Exek6GOsNeyKt It99SDs/Iw+6HoEWbx46FmLYUV0/Dm/vRjMvw5feLT+XWHN4wTffQuA78w4YOzCV Sf1bzkt1VW5+NQQpKatGzjRwGYiFRUACASFhDZel31B1zGa8jYZLjwKdHenU3+HW 5ItIoujGAXYawk0WKHhkwJxkN1FoNqwCiOcEmKtwekLAqHSw2C20uzBhxipeckf0 ynW3IFRWH9LMRdYQOcLcE08Bx43xKcUM8WKvdwmein/mFY0KFV5ycGBsJGzDLi0N MLbgnq1FynqfVf0/eEe/+kOojoWjFahiEAn+ceVoj4QLpGFBgbmogeyxsnoUfhC9 LsN87UMurdrLXf56/xMchb7YY8NOF6DguebZVUfEi6oZ3bDGtMj/MzEOS5btWG1V qEQVkeZr7OYOMbD+LWVwl40LO41kFfmbKd1SsCHa1ri1qWiMUwBEhrFnT+eYkFtA u2ep/LN5OGKFTkrBYQvVvnvTtVN69aNCKJDuOpQvMAY/rxGWy8VF3D0B0XQTul/8 RTVmyIwGEk+nZ9d+TAMJYb/gU1mzgH7v3qAqXQa+zrF3JImwxOMU3ryFJoIRk17h /3YFJIL8q+HS/NLjEQW7VSIdVGOLiffbkjAWlcvddVSuINg3ESY= =j7pf -----END PGP SIGNATURE----- Merge tag 'dmaengine-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine Pull dmaengine updates from Vinod Koul: "Core: - Managed API for dma channel request New support: - Sophgo CV18XX/SG200X dmamux driver - Qualcomm Milos GPI, sc8280xp GPI support Updates: - Conversion of brcm,iproc-sba and marvell,orion-xor binding - Unused code cleanup across drivers" * tag 'dmaengine-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (23 commits) dt-bindings: dma: fsl-mxs-dma: allow interrupt-names for fsl,imx23-dma-apbx dmaengine: xdmac: make it selectable for ARCH_MICROCHIP dt-bindings: dma: Convert marvell,orion-xor to DT schema dt-bindings: dma: Convert brcm,iproc-sba to DT schema dmaengine: nbpfaxi: Add missing check after DMA map dmaengine: mv_xor: Fix missing check after DMA map and missing unmap dt-bindings: dma: qcom,gpi: document the Milos GPI DMA Engine dmaengine: idxd: Remove __packed from structures dmaengine: ti: Do not enable by default during compile testing dmaengine: sh: Do not enable SH_DMAE_BASE by default during compile testing dmaengine: idxd: Fix warning for deadcode.deadstore dmaengine: mmp: Fix again Wvoid-pointer-to-enum-cast warning dmaengine: fsl-qdma: Add missing fsl_qdma_format kerneldoc dmaengine: qcom: gpi: Drop unused gpi_write_reg_field() dmaengine: fsl-dpaa2-qdma: Drop unused mc_enc() dmaengine: dw-edma: Drop unused dchan2dev() and chan2dev() dmaengine: stm32: Don't use %pK through printk dmaengine: stm32-dma: configure next sg only if there are more than 2 sgs dmaengine: sun4i: Simplify error handling in probe() dt-bindings: dma: qcom,gpi: Document the sc8280xp GPI DMA engine ... |
||
|
Linus Torvalds
|
8582976acc |
phy-for-6.17
- New Support
- Qualcomm Milos Synopsys eUSB2 PHY, SM8750 QMP phy support,
M31 eUSB2 PHY driver
- Samsung Exynos990 usbdrd phy, Exynos7870 MIPI phy support
- Renesas RZ/V2N usb2-phy support
- Updates
- Bulk Yaml binding conversion By Rob H (too many to be listed)
- cadence: Sierra PCIe, USB PHY multilink configuration support
- Qualcomm refactoring of UFS PHY reset and UFS driver support for phy
calibrate API
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Merge tag 'phy-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Pull phy updates from Vinod Koul:
"New Support:
- Qualcomm Milos Synopsys eUSB2 PHY, SM8750 QMP phy support, M31
eUSB2 PHY driver
- Samsung Exynos990 usbdrd phy, Exynos7870 MIPI phy support
- Renesas RZ/V2N usb2-phy support
Updates:
- Bulk Yaml binding conversion By Rob H (too many to be listed)
- cadence: Sierra PCIe, USB PHY multilink configuration support
- Qualcomm refactoring of UFS PHY reset and UFS driver support for
phy calibrate API"
* tag 'phy-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (74 commits)
phy: qcom: phy-qcom-m31: Update IPQ5332 M31 USB phy initialization sequence
dt-bindings: phy: Convert brcm,sr-usb-combo-phy to DT schema
dt-bindings: phy: Convert ti,da830-usb-phy to DT schema
dt-bindings: phy: marvell,mmp2-usb-phy: Drop status from the example
dt-bindings: phy: mixel, mipi-dsi-phy: Allow assigned-clock* properties
phy: exynos-mipi-video: correct cam0 sysreg property name for exynos7870
phy: qcom: phy-qcom-snps-eusb2: Update init sequence per HPG 1.0.2
phy: qcom: phy-qcom-snps-eusb2: Add missing write from init sequence
dt-bindings: phy: qcom,snps-eusb2: document the Milos Synopsys eUSB2 PHY
dt-bindings: usb: qcom,snps-dwc3: Add Milos compatible
phy: rockchip-pcie: Properly disable TEST_WRITE strobe signal
phy: rockchip-pcie: Enable all four lanes if required
dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Update pcie phy bindings for QCS615
phy: qcom: qmp-combo: Add missing PLL (VCO) configuration on SM8750
phy: qcom: m31-eusb2: drop registration printk
phy: qcom: m31-eusb2: fix match data santity check
phy: qcom: qmp-pcie: Update PHY settings for QCS8300 & SA8775P
phy: qualcomm: phy-qcom-eusb2-repeater: Don't zero-out registers
dt-bindings: phy: qcom,snps-eusb2-repeater: Remove default tuning values
phy: mediatek: tphy: Cleanup and document slew calibration
...
|
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Michal Wajdeczko
|
9fd9f22144 |
drm/xe/pf: Don't resume device from restart worker
The PF's restart worker shouldn't attempt to resume the device on its own, since its goal is to finish PF and VFs reprovisioning on the recently reset GuC. Take extra RPM reference while scheduling a work and release it from the worker or when we cancel a work. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com> Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> Link: https://lore.kernel.org/r/20250801142822.180530-4-michal.wajdeczko@intel.com |
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Michal Wajdeczko
|
c6c86441c4 |
drm/xe/pf: Make sure PF is ready to configure VFs
The PF driver might be resumed just to configure VFs, but since
it is doing some asynchronous GuC reconfigurations after fresh
reset, we should wait until all pending works are completed.
This is especially important in case of LMEM provisioning, since
we also need to update the LMTT and send invalidation requests
to all GuCs, which are expected to be already in the VGT mode.
Fixes:
|
||
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Michal Wajdeczko
|
a424353937 |
drm/xe/pf: Disable PF restart worker on device removal
We can't let restart worker run once device is removed, since other
data that it might want to access could be already released.
Explicitly disable worker as part of device cleanup action.
Fixes:
|
||
|
Linus Torvalds
|
7a64bdfaf3 |
sound updates #2 for 6.17-rc1
For catching up the remaining stuff for 6.17: only small updates
and the rest are mostly small fixes.
- Fixes in HD-audio codec driver Kconfig, so that configurations
can be more easily/safely carried between different versions
- Fixes in ASoC SDCA, FSL xcvr, AW88399
- ASoC IMX WM8524 support
- HD-audio and USB-audio quirks and fixes
- A minor selftest fix
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Merge tag 'sound-6.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull more sound updates from Takashi Iwai:
"For catching up the remaining stuff for 6.17: only small updates and
the rest are mostly small fixes.
- Fixes in HD-audio codec driver Kconfig, so that configurations can
be more easily/safely carried between different versions
- Fixes in ASoC SDCA, FSL xcvr, AW88399
- ASoC IMX WM8524 support
- HD-audio and USB-audio quirks and fixes
- A minor selftest fix"
* tag 'sound-6.17-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
ALSA: usb: scarlett2: Fix missing NULL check
mips: Update HD-audio configs again
LoongArch: Update HD-audio codec configs
arm: Update HD-audio configs again
selftests: ALSA: fix memory leak in utimer test
ALSA: usb-audio: Add DSD support for Comtrue USB Audio device
ALSA: hda/hdmi: Enable drivers as default
ALSA: hda/cirrus: Enable drivers as default
ALSA: hda/realtek: Enable drivers as default
ALSA: hda/realtek - Fix mute LED for HP Victus 16-d1xxx (MB 8A26)
ALSA: hda/realtek - Fix mute LED for HP Victus 16-s0xxx
ALSA: hda: Fix the wrong register was used for DVC of TAS2770
ALSA: scarlett2: Add retry on -EPROTO from scarlett2_usb_tx()
ALSA: hda/realtek - Fix mute LED for HP Victus 16-r1xxx
ASoC: codecs: Add acpi_match_table for aw88399 driver
ASoC: dt-bindings: atmel,at91-ssc: add microchip,sam9x7-ssc
ASoC: imx-card: Add WM8524 support
ASoC: fsl_xcvr: get channel status data with firmware exists
ASoC: fsl_xcvr: get channel status data when PHY is not exists
ASoC: SDCA: Add support for -cn- value properties
...
|
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|
Michal Wajdeczko
|
b52f8d7a8f |
drm/xe/pf: Skip LMTT update if no LMEM was provisioned
During VF unprovisioning, if VF was not provisioned with LMEM, there is no need to trigger LMTT update, as VF LMTT was never set. This will spare us sending full TLB invalidation requests. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com> Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> Link: https://lore.kernel.org/r/20250801144418.180584-1-michal.wajdeczko@intel.com |
||
|
Linus Torvalds
|
6fac1139d9 |
soundwire updates for 6.17
Couple of small core changes and driver updates:
- Core: handling of nesting irqs to outside the lock, stream parameters
handing on port prep failures.
- AMD driver support for ACP 7.2 platforms and improved handing of slave
alerts and resume sequences
- Qualcomm updating driver debug spew
- Intel BPT message length limitations, rt721 codec as wake capable etc
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Merge tag 'soundwire-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul:
"A couple of small core changes and driver updates:
- Core: handling of nesting irqs to outside the lock, stream
parameters handing on port prep failures.
- AMD driver support for ACP 7.2 platforms and improved handing of
slave alerts and resume sequences
- Qualcomm updating driver debug spew
- Intel BPT message length limitations, rt721 codec as wake capable
etc"
* tag 'soundwire-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
soundwire: amd: Add support for acp7.2 platform
soundwire: stream: restore params when prepare ports fail
soundwire: debugfs: move debug statement outside of error handling
soundwire: amd: add check for status update registers
soundwire: intel_auxdevice: add rt721 codec to wake_capable_list
soundwire: Correct some property names
soundwire: update Intel BPT message length limitation
soundwire: intel_ace2.x: Use str_read_write() helper
soundwire: amd: cancel pending slave status handling workqueue during remove sequence
soundwire: amd: serialize amd manager resume sequence during pm_prepare
soundwire: qcom: demote probe registration printk
ASoC: cs42l43: Remove unnecessary work functions
soundwire: Move handle_nested_irq outside of sdw_dev_lock
MAINTAINERS: Remove Sanyog Kale as reviewer on SoundWire
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Rob Clark
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f22853435b |
drm/msm: Defer fd_install in SUBMIT ioctl
Avoid fd_install() until there are no more potential error paths, to
avoid put_unused_fd() after the fd is made visible to userspace.
Fixes:
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