Pull lsm updates from Paul Moore:
- Improved handling of LSM "secctx" strings through lsm_context struct
The LSM secctx string interface is from an older time when only one
LSM was supported, migrate over to the lsm_context struct to better
support the different LSMs we now have and make it easier to support
new LSMs in the future.
These changes explain the Rust, VFS, and networking changes in the
diffstat.
- Only build lsm_audit.c if CONFIG_SECURITY and CONFIG_AUDIT are
enabled
Small tweak to be a bit smarter about when we build the LSM's common
audit helpers.
- Check for absurdly large policies from userspace in SafeSetID
SafeSetID policies rules are fairly small, basically just "UID:UID",
it easy to impose a limit of KMALLOC_MAX_SIZE on policy writes which
helps quiet a number of syzbot related issues. While work is being
done to address the syzbot issues through other mechanisms, this is a
trivial and relatively safe fix that we can do now.
- Various minor improvements and cleanups
A collection of improvements to the kernel selftests, constification
of some function parameters, removing redundant assignments, and
local variable renames to improve readability.
* tag 'lsm-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
lockdown: initialize local array before use to quiet static analysis
safesetid: check size of policy writes
net: corrections for security_secid_to_secctx returns
lsm: rename variable to avoid shadowing
lsm: constify function parameters
security: remove redundant assignment to return variable
lsm: Only build lsm_audit.c if CONFIG_SECURITY and CONFIG_AUDIT are set
selftests: refactor the lsm `flags_overset_lsm_set_self_attr` test
binder: initialize lsm_context structure
rust: replace lsm context+len with lsm_context
lsm: secctx provider check on release
lsm: lsm_context in security_dentry_init_security
lsm: use lsm_context in security_inode_getsecctx
lsm: replace context+len with lsm_context
lsm: ensure the correct LSM context releaser
Pull rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Finish the move to custom FFI integer types started in the previous
cycle and finally map 'long' to 'isize' and 'char' to 'u8'. Do a
few cleanups on top thanks to that.
- Start to use 'derive(CoercePointee)' on Rust >= 1.84.0.
This is a major milestone on the path to build the kernel using
only stable Rust features. In particular, previously we were using
the unstable features 'coerce_unsized', 'dispatch_from_dyn' and
'unsize', and now we will use the new 'derive_coerce_pointee' one,
which is on track to stabilization. This new feature is a macro
that essentially expands into code that internally uses the
unstable features that we were using before, without having to
expose those.
With it, stable Rust users, including the kernel, will be able to
build custom smart pointers that work with trait objects, e.g.:
fn f(p: &Arc<dyn Display>) {
pr_info!("{p}\n");
}
let a: Arc<dyn Display> = Arc::new(42i32, GFP_KERNEL)?;
let b: Arc<dyn Display> = Arc::new("hello there", GFP_KERNEL)?;
f(&a); // Prints "42".
f(&b); // Prints "hello there".
Together with the 'arbitrary_self_types' feature that we started
using in the previous cycle, using our custom smart pointers like
'Arc' will eventually only rely in stable Rust.
- Introduce 'PROCMACROLDFLAGS' environment variable to allow to link
Rust proc macros using different flags than those used for linking
Rust host programs (e.g. when 'rustc' uses a different C library
than the host programs' one), which Android needs.
- Help kernel builds under macOS with Rust enabled by accomodating
other naming conventions for dynamic libraries (i.e. '.so' vs.
'.dylib') which are used for Rust procedural macros. The actual
support for macOS (i.e. the rest of the pieces needed) is provided
out-of-tree by others, following the policy used for other parts of
the kernel by Kbuild.
- Run Clippy for 'rusttest' code too and clean the bits it spotted.
- Provide Clippy with the minimum supported Rust version to improve
the suggestions it gives.
- Document 'bindgen' 0.71.0 regression.
'kernel' crate:
- 'build_error!': move users of the hidden function to the documented
macro, prevent such uses in the future by moving the function
elsewhere and add the macro to the prelude.
- 'types' module: add improved version of 'ForeignOwnable::borrow_mut'
(which was removed in the past since it was problematic); change
'ForeignOwnable' pointer type to '*mut'.
- 'alloc' module: implement 'Display' for 'Box' and align the 'Debug'
implementation to it; add example (doctest) for 'ArrayLayout::new()'
- 'sync' module: document 'PhantomData' in 'Arc'; use
'NonNull::new_unchecked' in 'ForeignOwnable for Arc' impl.
- 'uaccess' module: accept 'Vec's with different allocators in
'UserSliceReader::read_all'.
- 'workqueue' module: enable run-testing a couple more doctests.
- 'error' module: simplify 'from_errno()'.
- 'block' module: fix formatting in code documentation (a lint to catch
these is being implemented).
- Avoid 'unwrap()'s in doctests, which also improves the examples by
showing how kernel code is supposed to be written.
- Avoid 'as' casts with 'cast{,_mut}' calls which are a bit safer.
And a few other cleanups"
* tag 'rust-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (32 commits)
kbuild: rust: add PROCMACROLDFLAGS
rust: uaccess: generalize userSliceReader to support any Vec
rust: kernel: add improved version of `ForeignOwnable::borrow_mut`
rust: kernel: reorder `ForeignOwnable` items
rust: kernel: change `ForeignOwnable` pointer to mut
rust: arc: split unsafe block, add missing comment
rust: types: avoid `as` casts
rust: arc: use `NonNull::new_unchecked`
rust: use derive(CoercePointee) on rustc >= 1.84.0
rust: alloc: add doctest for `ArrayLayout::new()`
rust: init: update `stack_try_pin_init` examples
rust: error: import `kernel`'s `LayoutError` instead of `core`'s
rust: str: replace unwraps with question mark operators
rust: page: remove unnecessary helper function from doctest
rust: rbtree: remove unwrap in asserts
rust: init: replace unwraps with question mark operators
rust: use host dylib naming convention to support macOS
rust: add `build_error!` to the prelude
rust: kernel: move `build_error` hidden function to prevent mistakes
rust: use the `build_error!` macro, not the hidden function
...
Pull locking updates from Ingo Molnar:
"Lockdep:
- Improve and fix lockdep bitsize limits, clarify the Kconfig
documentation (Carlos Llamas)
- Fix lockdep build warning on Clang related to
chain_hlock_class_idx() inlining (Andy Shevchenko)
- Relax the requirements of PROVE_RAW_LOCK_NESTING arch support by
not tying it to ARCH_SUPPORTS_RT unnecessarily (Waiman Long)
Rust integration:
- Support lock pointers managed by the C side (Lyude Paul)
- Support guard types (Lyude Paul)
- Update MAINTAINERS file filters to include the Rust locking code
(Boqun Feng)
Wake-queues:
- Add raw_spin_*wake() helpers to simplify locking code (John Stultz)
SMP cross-calls:
- Fix potential data update race by evaluating the local cond_func()
before IPI side-effects (Mathieu Desnoyers)
Guard primitives:
- Ease [c]tags based searches by including the cleanup/guard type
primitives (Peter Zijlstra)
ww_mutexes:
- Simplify the ww_mutex self-test code via swap() (Thorsten Blum)
Static calls:
- Update the static calls MAINTAINERS file-pattern (Jiri Slaby)"
* tag 'locking-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Add static_call_inline.c to STATIC BRANCH/CALL
cleanup, tags: Create tags for the cleanup primitives
sched/wake_q: Add helper to call wake_up_q after unlock with preemption disabled
rust: sync: Add lock::Backend::assert_is_held()
rust: sync: Add SpinLockGuard type alias
rust: sync: Add MutexGuard type alias
rust: sync: Make Guard::new() public
rust: sync: Add Lock::from_raw() for Lock<(), B>
locking: MAINTAINERS: Start watching Rust locking primitives
lockdep: Move lockdep_assert_locked() under #ifdef CONFIG_PROVE_LOCKING
lockdep: Mark chain_hlock_class_idx() with __maybe_unused
lockdep: Document MAX_LOCKDEP_CHAIN_HLOCKS calculation
lockdep: Clarify size for LOCKDEP_*_BITS configs
lockdep: Fix upper limit for LOCKDEP_*_BITS configs
locking/ww_mutex/test: Use swap() macro
smp/scf: Evaluate local cond_func() before IPI side-effects
locking/lockdep: Enforce PROVE_RAW_LOCK_NESTING only if ARCH_SUPPORTS_RT
Pull block updates from Jens Axboe:
- NVMe pull requests via Keith:
- Target support for PCI-Endpoint transport (Damien)
- TCP IO queue spreading fixes (Sagi, Chaitanya)
- Target handling for "limited retry" flags (Guixen)
- Poll type fix (Yongsoo)
- Xarray storage error handling (Keisuke)
- Host memory buffer free size fix on error (Francis)
- MD pull requests via Song:
- Reintroduce md-linear (Yu Kuai)
- md-bitmap refactor and fix (Yu Kuai)
- Replace kmap_atomic with kmap_local_page (David Reaver)
- Quite a few queue freeze and debugfs deadlock fixes
Ming introduced lockdep support for this in the 6.13 kernel, and it
has (unsurprisingly) uncovered quite a few issues
- Use const attributes for IO schedulers
- Remove bio ioprio wrappers
- Fixes for stacked device atomic write support
- Refactor queue affinity helpers, in preparation for better supporting
isolated CPUs
- Cleanups of loop O_DIRECT handling
- Cleanup of BLK_MQ_F_* flags
- Add rotational support for null_blk
- Various fixes and cleanups
* tag 'for-6.14/block-20250118' of git://git.kernel.dk/linux: (106 commits)
block: Don't trim an atomic write
block: Add common atomic writes enable flag
md/md-linear: Fix a NULL vs IS_ERR() bug in linear_add()
block: limit disk max sectors to (LLONG_MAX >> 9)
block: Change blk_stack_atomic_writes_limits() unit_min check
block: Ensure start sector is aligned for stacking atomic writes
blk-mq: Move more error handling into blk_mq_submit_bio()
block: Reorder the request allocation code in blk_mq_submit_bio()
nvme: fix bogus kzalloc() return check in nvme_init_effects_log()
md/md-bitmap: move bitmap_{start, end}write to md upper layer
md/raid5: implement pers->bitmap_sector()
md: add a new callback pers->bitmap_sector()
md/md-bitmap: remove the last parameter for bimtap_ops->endwrite()
md/md-bitmap: factor behind write counters out from bitmap_{start/end}write()
md: Replace deprecated kmap_atomic() with kmap_local_page()
md: reintroduce md-linear
partitions: ldm: remove the initial kernel-doc notation
blk-cgroup: rwstat: fix kernel-doc warnings in header file
blk-cgroup: fix kernel-doc warnings in header file
nbd: fix partial sending
...
These are flags to be passed when linking proc macros for the Rust
toolchain. If unset, it defaults to $(KBUILD_HOSTLDFLAGS).
This is needed because the list of flags to link hostprogs is not
necessarily the same as the list of flags used to link libmacros.so.
When we build proc macros, we need the latter, not the former (e.g. when
using a Rust compiler binary linked to a different C library than host
programs).
To distinguish between the two, introduce this new variable to stand
out from KBUILD_HOSTLDFLAGS used to link other host progs.
Signed-off-by: HONG Yifan <elsk@google.com>
Link: https://lore.kernel.org/r/20241017210430.2401398-2-elsk@google.com
[ v3:
- `export`ed the variable. Otherwise it would not be visible in
`rust/Makefile`.
- Removed "additional" from the documentation and commit message,
since this actually replaces the other flags, unlike other cases.
- Added example of use case to documentation and commit message.
Thanks Alice for the details on what Google needs!
- Instead of `HOSTLDFLAGS`, used `KBUILD_HOSTLDFLAGS` as the fallback
to preserve the previous behavior as much as possible, as discussed
with Alice/Yifan. Thus moved the variable down too (currently we
do not modify `KBUILD_HOSTLDFLAGS` elsewhere) and avoided
mentioning `HOSTLDFLAGS` directly in the documentation.
- Fixed documentation header formatting.
- Reworded slightly.
- Miguel ]
Tested-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: HONG Yifan <elsk@google.com>
Acked-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20241112184455.855133-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Previously, the `ForeignOwnable` trait had a method called `borrow_mut`
that was intended to provide mutable access to the inner value. However,
the method accidentally made it possible to change the address of the
object being modified, which usually isn't what we want. (And when we
want that, it can be done by calling `from_foreign` and `into_foreign`,
like how the old `borrow_mut` was implemented.)
In this patch, we introduce an alternate definition of `borrow_mut` that
solves the previous problem. Conceptually, given a pointer type `P` that
implements `ForeignOwnable`, the `borrow_mut` method gives you the same
kind of access as an `&mut P` would, except that it does not let you
change the pointer `P` itself.
This is analogous to how the existing `borrow` method provides the same
kind of access to the inner value as an `&P`.
Note that for types like `Arc`, having an `&mut Arc<T>` only gives you
immutable access to the inner `T`. This is because mutable references
assume exclusive access, but there might be other handles to the same
reference counted value, so the access isn't exclusive. The `Arc` type
implements this by making `borrow_mut` return the same type as `borrow`.
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/20241120-borrow-mut-v6-6-80dbadd00951@gmail.com
[ Updated to `crate::ffi::`. Reworded title slightly. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
The `kernel` crate relies on both `coerce_unsized` and `dispatch_from_dyn`
unstable features.
Alice Ryhl has proposed [1] the introduction of the unstable macro
`SmartPointer` to reduce such dependence, along with a RFC patch [2].
Since Rust 1.81.0 this macro, later renamed to `CoercePointee` in
Rust 1.84.0 [3], has been fully implemented with the naming discussion
resolved.
This feature is now on track to stabilization in the language.
In order to do so, we shall start using this macro in the `kernel` crate
to prove the functionality and utility of the macro as the justification
of its stabilization.
This patch makes this switch in such a way that the crate remains
backward compatible with older Rust compiler versions,
via the new Kconfig option `RUSTC_HAS_COERCE_POINTEE`.
A minimal demonstration example is added to the
`samples/rust/rust_print_main.rs` module.
Link: https://rust-lang.github.io/rfcs/3621-derive-smart-pointer.html [1]
Link: https://lore.kernel.org/all/20240823-derive-smart-pointer-v1-1-53769cd37239@google.com/ [2]
Link: https://github.com/rust-lang/rust/pull/131284 [3]
Signed-off-by: Xiangfei Ding <dingxiangfei2009@gmail.com>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20241203205050.679106-2-dingxiangfei2009@gmail.com
[ Fixed version to 1.84. Renamed option to `RUSTC_HAS_COERCE_POINTEE`
to match `CC_HAS_*` ones. Moved up new config option, closer to the
`CC_HAS_*` ones. Simplified Kconfig line. Fixed typos and slightly
reworded example and commit. Added Link to PR. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Remove `unwrap` in asserts and replace it with `Option::Some`
matching. By doing it this way, the examples are more
descriptive, so it disambiguates the return type of
the `get(...)` and `next(...)`, because the `unwrap(...)`
can also be called on `Result`.
Signed-off-by: Daniel Sedlak <daniel@sedlak.dev>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20241123095033.41240-3-daniel@sedlak.dev
[ Reworded title slightly. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Because the `macros` crate exposes procedural macros, it must be
compiled as a dynamic library (so it can be loaded by the compiler at
compile-time).
Before this change the resulting artifact was always named
`libmacros.so`, which works on hosts where this matches the naming
convention for dynamic libraries. However the proper name on macOS would
be `libmacros.dylib`.
This turns out to matter even when the dependency is passed with a path
(`--extern macros=path/to/libmacros.so` rather than `--extern macros`)
because rustc uses the file name to infer the type of the library (see
link). This is because there's no way to specify both the path to and
the type of the external library via CLI flags. The compiler could
speculatively parse the file to determine its type, but it does not do
so today.
This means that libraries that match neither rustc's naming convention
for static libraries nor the platform's naming convention for dynamic
libraries are *rejected*.
The only solution I've found is to follow the host platform's naming
convention. This patch does that by querying the compiler to determine
the appropriate name for the artifact. This allows the kernel to build
with CONFIG_RUST=y on macOS.
Link: https://github.com/rust-lang/rust/blob/d829780/compiler/rustc_metadata/src/locator.rs#L728-L752
Tested-by: Daniel Gomez <da.gomez@samsung.com>
Co-developed-by: Fiona Behrens <me@kloenk.dev>
Signed-off-by: Fiona Behrens <me@kloenk.dev>
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Tested-by: Andreas Hindborg <a.hindborg@kernel.org>
Link: https://lore.kernel.org/r/20241216-b4-dylib-host-macos-v7-1-cfc507681447@gmail.com
[ Added `MAKEFLAGS=`s to avoid jobserver warnings. Removed space.
Reworded title. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
The sibling `build_assert!` is already in the prelude, it makes sense
that a "core"/"language" facility like this is part of the prelude and
users should not be defining their own one (thus there should be no risk
of future name collisions and we would want to be aware of them anyway).
Thus add `build_error!` into the prelude.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20241123222849.350287-3-ojeda@kernel.org
[ Applied the change to the new miscdevice cases. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Users were using the hidden exported `kernel::build_error` function
instead of the intended `kernel::build_error!` macro, e.g. see the
previous commit.
To force to use the macro, move it into the `build_assert` module,
thus making it a compilation error and avoiding a collision in the same
"namespace". Using the function now would require typing the module name
(which is hidden), not just a single character.
Now attempting to use the function will trigger this error with the
right suggestion by the compiler:
error[E0423]: expected function, found macro `kernel::build_error`
--> samples/rust/rust_minimal.rs:29:9
|
29 | kernel::build_error();
| ^^^^^^^^^^^^^^^^^^^ not a function
|
help: use `!` to invoke the macro
|
29 | kernel::build_error!();
| +
An alternative would be using an alias, but it would be more complex
and moving it into the module seems right since it belongs there and
reduces the amount of code at the crate root.
Keep the `#[doc(hidden)]` inside `build_assert` in case the module is
not hidden in the future.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20241123222849.350287-2-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Running Clippy for `rusttest` code is useful to catch issues there too,
even if the code is not as critical. In the future, this code may also
run in kernelspace and could be copy-pasted. Thus it is useful to keep
it under the same standards. For instance, it will now make us add
`// SAFETY` comments.
It also makes everything more consistent.
Thus clean the few issues spotted by Clippy and start running it.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20241123180639.260191-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Pull workqueue fixes from Tejun Heo:
- Suppress a corner case spurious flush dependency warning
- Two trivial changes
* tag 'wq-for-6.13-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: add printf attribute to __alloc_workqueue()
workqueue: Do not warn when cancelling WQ_MEM_RECLAIM work from !WQ_MEM_RECLAIM worker
rust: add safety comment in workqueue traits
Lockdep changes for v6.14:
- Use swap() macro in the ww_mutex test.
- Minor fixes and documentation for lockdep configs on internal data structure sizes.
- Some "-Wunused-function" warning fixes for Clang.
Rust locking changes for v6.14:
- Add Rust locking files into LOCKING PRIMITIVES maintainer entry.
- Add `Lock<(), ..>::from_raw()` function to support abstraction on low level locking.
- Expose `Guard::new()` for public usage and add type alias for spinlock and mutex guards.
- Add lockdep checking when creating a new lock `Guard`.
Since we've exposed Lock::from_raw() and Guard::new() publically, we
want to be able to make sure that we assert that a lock is actually held
when constructing a Guard for it to handle instances of unsafe
Guard::new() calls outside of our lock module.
Hence add a new method assert_is_held() to Backend, which uses lockdep
to check whether or not a lock has been acquired. When lockdep is
disabled, this has no overhead.
[Boqun: Resolve the conflicts with exposing Guard::new(), reword the
commit log a bit and format "unsafe { <statement>; }" into "unsafe {
<statement> }" for the consistency. ]
Signed-off-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20241125204139.656801-1-lyude@redhat.com
Since we added a `Lock::from_raw()` function previously, it makes sense
to also introduce an interface for creating a `Guard` from a reference
to a `Lock` for instances where we've derived the `Lock` from a raw
pointer and know that the lock is already acquired, there are such
usages in KMS API.
[Boqun: Add backquotes to type names, reformat the commit log, reword a
bit on the usage of KMS API]
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Filipe Xavier <felipe_life@live.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20241119231146.2298971-3-lyude@redhat.com
The KMS bindings [1] have a few bindings that require manually acquiring
specific locks before calling certain functions. At the moment though,
the only way of acquiring these locks in bindings is to simply call the
C locking functions directly - since said locks are not initialized on
the Rust side of things.
However - if we add `#[repr(C)]` to `Lock<(), B>`, then given `()` is a
ZST - `Lock<(), B>` becomes equivalent in data layout to its inner
`B::State` type. Since locks in C don't have data explicitly associated
with them anyway, we can take advantage of this to add a
`Lock::from_raw()` function that can translate a raw pointer to
`B::State` into its proper `Lock<(), B>` equivalent. This lets us simply
acquire a reference to the lock in question and work with it like it was
initialized on the Rust side of things, allowing us to use less unsafe
code to implement bindings with lock requirements.
[Boqun: Use "Link:" instead of a URL and format the commit log]
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patchwork.freedesktop.org/series/131522/ [1]
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20241119231146.2298971-2-lyude@redhat.com
Pull networking fixes from Paolo Abeni:
"Including fixes from can and netfilter.
Current release - regressions:
- rtnetlink: try the outer netns attribute in rtnl_get_peer_net()
- rust: net::phy fix module autoloading
Current release - new code bugs:
- phy: avoid undefined behavior in *_led_polarity_set()
- eth: octeontx2-pf: fix netdev memory leak in rvu_rep_create()
Previous releases - regressions:
- smc: check sndbuf_space again after NOSPACE flag is set in smc_poll
- ipvs: fix clamp() of ip_vs_conn_tab on small memory systems
- dsa: restore dsa_software_vlan_untag() ability to operate on
VLAN-untagged traffic
- eth:
- tun: fix tun_napi_alloc_frags()
- ionic: no double destroy workqueue
- idpf: trigger SW interrupt when exiting wb_on_itr mode
- rswitch: rework ts tags management
- team: fix feature exposure when no ports are present
Previous releases - always broken:
- core: fix repeated netlink messages in queue dump
- mdiobus: fix an OF node reference leak
- smc: check iparea_offset and ipv6_prefixes_cnt when receiving
proposal msg
- can: fix missed interrupts with m_can_pci
- eth: oa_tc6: fix infinite loop error when tx credits becomes 0"
* tag 'net-6.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (45 commits)
net: mctp: handle skb cleanup on sock_queue failures
net: mdiobus: fix an OF node reference leak
octeontx2-pf: fix error handling of devlink port in rvu_rep_create()
octeontx2-pf: fix netdev memory leak in rvu_rep_create()
psample: adjust size if rate_as_probability is set
netdev-genl: avoid empty messages in queue dump
net: dsa: restore dsa_software_vlan_untag() ability to operate on VLAN-untagged traffic
selftests: openvswitch: fix tcpdump execution
net: usb: qmi_wwan: add Quectel RG255C
net: phy: avoid undefined behavior in *_led_polarity_set()
netfilter: ipset: Fix for recursive locking warning
ipvs: Fix clamp() of ip_vs_conn_tab on small memory systems
can: m_can: fix missed interrupts with m_can_pci
can: m_can: set init flag earlier in probe
rtnetlink: Try the outer netns attribute in rtnl_get_peer_net().
net: netdevsim: fix nsim_pp_hold_write()
idpf: trigger SW interrupt when exiting wb_on_itr mode
idpf: add support for SW triggered interrupts
qed: fix possible uninit pointer read in qed_mcp_nvm_info_populate()
net: ethernet: bgmac-platform: fix an OF node reference leak
...
Having the Rust doctests enabled these workqueue tests are built but not
executed as the final callers of the print_*() functions are missing.
Add them.
The result is
# rust_doctest_kernel_workqueue_rs_0.location: rust/kernel/workqueue.rs:35
rust_doctests_kernel: The value is: 42
ok 94 rust_doctest_kernel_workqueue_rs_0
# rust_doctest_kernel_workqueue_rs_3.location: rust/kernel/workqueue.rs:78
rust_doctests_kernel: The value is: 24
rust_doctests_kernel: The second value is: 42
ok 97 rust_doctest_kernel_workqueue_rs_3
Without this change the "The value ..." outputs are not there meaning
that this test code is not run.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/cb953202-0dbe-4127-8a8e-6a75258c2116@gmail.com
[ Reworded slightly. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
With `long` mapped to `isize`, `size_t`/`__kernel_size_t` mapped to
`usize` and `char` mapped to `u8`, many of the existing casts are no
longer necessary.
Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20240913213041.395655-6-gary@garyguo.net
[ Moved `uaccess` changes to the previous commit, since they were
irrefutable patterns that Rust >= 1.82.0 warns about. Removed a
couple casts that now use `c""` literals. Rebased on top of
`rust-next`. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
The following FFI types are replaced compared to `core::ffi`:
1. `char` type is now always mapped to `u8`, since kernel uses
`-funsigned-char` on the C code. `core::ffi` maps it to platform
default ABI, which can be either signed or unsigned.
2. `long` is now always mapped to `isize`. It's very common in the
kernel to use `long` to represent a pointer-sized integer, and in
fact `intptr_t` is a typedef of `long` in the kernel. Enforce this
mapping rather than mapping to `i32/i64` depending on platform can
save us a lot of unnecessary casts.
Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20240913213041.395655-5-gary@garyguo.net
[ Moved `uaccess` changes from the next commit, since they were
irrefutable patterns that Rust >= 1.82.0 warns about. Reworded
slightly and reformatted a few documentation comments. Rebased on
top of `rust-next`. Added the removal of two casts to avoid Clippy
warnings. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Each `bindgen` release may upgrade the list of Rust targets. For instance,
currently, in their master branch [1], the latest ones are:
Nightly => {
vectorcall_abi: #124485,
ptr_metadata: #81513,
layout_for_ptr: #69835,
},
Stable_1_77(77) => { offset_of: #106655 },
Stable_1_73(73) => { thiscall_abi: #42202 },
Stable_1_71(71) => { c_unwind_abi: #106075 },
Stable_1_68(68) => { abi_efiapi: #105795 },
By default, the highest stable release in their list is used, and users
are expected to set one if they need to support older Rust versions
(e.g. see [2]).
Thus, over time, new Rust features are used by default, and at some
point, it is likely that `bindgen` will emit Rust code that requires a
Rust version higher than our minimum (or perhaps enabling an unstable
feature). Currently, there is no problem because the maximum they have,
as seen above, is Rust 1.77.0, and our current minimum is Rust 1.78.0.
Therefore, set a Rust target explicitly now to prevent going forward in
time too much and thus getting potential build failures at some point.
Since we also support a minimum `bindgen` version, and since `bindgen`
does not support passing unknown Rust target versions, we need to use
the list of our minimum `bindgen` version, rather than the latest. So,
since `bindgen` 0.65.1 had this list [3], we need to use Rust 1.68.0:
/// Rust stable 1.64
/// * `core_ffi_c` ([Tracking issue](https://github.com/rust-lang/rust/issues/94501))
=> Stable_1_64 => 1.64;
/// Rust stable 1.68
/// * `abi_efiapi` calling convention ([Tracking issue](https://github.com/rust-lang/rust/issues/65815))
=> Stable_1_68 => 1.68;
/// Nightly rust
/// * `thiscall` calling convention ([Tracking issue](https://github.com/rust-lang/rust/issues/42202))
/// * `vectorcall` calling convention (no tracking issue)
/// * `c_unwind` calling convention ([Tracking issue](https://github.com/rust-lang/rust/issues/74990))
=> Nightly => nightly;
...
/// Latest stable release of Rust
pub const LATEST_STABLE_RUST: RustTarget = RustTarget::Stable_1_68;
Thus add the `--rust-target 1.68` parameter. Add a comment as well
explaining this.
An alternative would be to use the currently running (i.e. actual) `rustc`
and `bindgen` versions to pick a "better" Rust target version. However,
that would introduce more moving parts depending on the user setup and
is also more complex to implement.
Starting with `bindgen` 0.71.0 [4], we will be able to set any future
Rust version instead, i.e. we will be able to set here our minimum
supported Rust version. Christian implemented it [5] after seeing this
patch. Thanks!
Cc: Christian Poveda <git@pvdrz.com>
Cc: Emilio Cobos Álvarez <emilio@crisal.io>
Cc: stable@vger.kernel.org # needed for 6.12.y; unneeded for 6.6.y; do not apply to 6.1.y
Fixes: c844fa64a2 ("rust: start supporting several `bindgen` versions")
Link: 21c60f473f/bindgen/features.rs (L97-L105) [1]
Link: https://github.com/rust-lang/rust-bindgen/issues/2960 [2]
Link: 7d243056d3/bindgen/features.rs (L131-L150) [3]
Link: https://github.com/rust-lang/rust-bindgen/blob/main/CHANGELOG.md#0710-2024-12-06 [4]
Link: https://github.com/rust-lang/rust-bindgen/pull/2993 [5]
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20241123180323.255997-1-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Pull more block updates from Jens Axboe:
- NVMe pull request via Keith:
- Use correct srcu list traversal (Breno)
- Scatter-gather support for metadata (Keith)
- Fabrics shutdown race condition fix (Nilay)
- Persistent reservations updates (Guixin)
- Add the required bits for MD atomic write support for raid0/1/10
- Correct return value for unknown opcode in ublk
- Fix deadlock with zone revalidation
- Fix for the io priority request vs bio cleanups
- Use the correct unsigned int type for various limit helpers
- Fix for a race in loop
- Cleanup blk_rq_prep_clone() to prevent uninit-value warning and make
it easier for actual humans to read
- Fix potential UAF when iterating tags
- A few fixes for bfq-iosched UAF issues
- Fix for brd discard not decrementing the allocated page count
- Various little fixes and cleanups
* tag 'block-6.13-20242901' of git://git.kernel.dk/linux: (36 commits)
brd: decrease the number of allocated pages which discarded
block, bfq: fix bfqq uaf in bfq_limit_depth()
block: Don't allow an atomic write be truncated in blkdev_write_iter()
mq-deadline: don't call req_get_ioprio from the I/O completion handler
block: Prevent potential deadlock in blk_revalidate_disk_zones()
block: Remove extra part pointer NULLify in blk_rq_init()
nvme: tuning pr code by using defined structs and macros
nvme: introduce change ptpl and iekey definition
block: return bool from get_disk_ro and bdev_read_only
block: remove a duplicate definition for bdev_read_only
block: return bool from blk_rq_aligned
block: return unsigned int from blk_lim_dma_alignment_and_pad
block: return unsigned int from queue_dma_alignment
block: return unsigned int from bdev_io_opt
block: req->bio is always set in the merge code
block: don't bother checking the data direction for merges
block: blk-mq: fix uninit-value in blk_rq_prep_clone and refactor
Revert "block, bfq: merge bfq_release_process_ref() into bfq_put_cooperator()"
md/raid10: Atomic write support
md/raid1: Atomic write support
...
Pull Kbuild updates from Masahiro Yamada:
- Add generic support for built-in boot DTB files
- Enable TAB cycling for dialog buttons in nconfig
- Fix issues in streamline_config.pl
- Refactor Kconfig
- Add support for Clang's AutoFDO (Automatic Feedback-Directed
Optimization)
- Add support for Clang's Propeller, a profile-guided optimization.
- Change the working directory to the external module directory for M=
builds
- Support building external modules in a separate output directory
- Enable objtool for *.mod.o and additional kernel objects
- Use lz4 instead of deprecated lz4c
- Work around a performance issue with "git describe"
- Refactor modpost
* tag 'kbuild-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (85 commits)
kbuild: rename .tmp_vmlinux.kallsyms0.syms to .tmp_vmlinux0.syms
gitignore: Don't ignore 'tags' directory
kbuild: add dependency from vmlinux to resolve_btfids
modpost: replace tdb_hash() with hash_str()
kbuild: deb-pkg: add python3:native to build dependency
genksyms: reduce indentation in export_symbol()
modpost: improve error messages in device_id_check()
modpost: rename alias symbol for MODULE_DEVICE_TABLE()
modpost: rename variables in handle_moddevtable()
modpost: move strstarts() to modpost.h
modpost: convert do_usb_table() to a generic handler
modpost: convert do_of_table() to a generic handler
modpost: convert do_pnp_device_entry() to a generic handler
modpost: convert do_pnp_card_entries() to a generic handler
modpost: call module_alias_printf() from all do_*_entry() functions
modpost: pass (struct module *) to do_*_entry() functions
modpost: remove DEF_FIELD_ADDR_VAR() macro
modpost: deduplicate MODULE_ALIAS() for all drivers
modpost: introduce module_alias_printf() helper
modpost: remove unnecessary check in do_acpi_entry()
...
Pull char/misc/IIO/whatever driver subsystem updates from Greg KH:
"Here is the 'big and hairy' char/misc/iio and other small driver
subsystem updates for 6.13-rc1.
Loads of things in here, and even a fun merge conflict!
- rust misc driver bindings and other rust changes to make misc
drivers actually possible.
I think this is the tipping point, expect to see way more rust
drivers going forward now that these bindings are present. Next
merge window hopefully we will have pci and platform drivers
working, which will fully enable almost all driver subsystems to
start accepting (or at least getting) rust drivers.
This is the end result of a lot of work from a lot of people,
congrats to all of them for getting this far, you've proved many of
us wrong in the best way possible, working code :)
- IIO driver updates, too many to list individually, that subsystem
keeps growing and growing...
- Interconnect driver updates
- nvmem driver updates
- pwm driver updates
- platform_driver::remove() fixups, loads of them
- counter driver updates
- misc driver updates (keba?)
- binder driver updates and fixes
- loads of other small char/misc/etc driver updates and additions,
full details in the shortlog.
All of these have been in linux-next for a while, with no other
reported issues other than that merge conflict"
* tag 'char-misc-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (401 commits)
mei: vsc: Fix typo "maintstepping" -> "mainstepping"
firmware: Switch back to struct platform_driver::remove()
misc: isl29020: Fix the wrong format specifier
scripts/tags.sh: Don't tag usages of DEFINE_MUTEX
fpga: Switch back to struct platform_driver::remove()
mei: vsc: Improve error logging in vsc_identify_silicon()
mei: vsc: Do not re-enable interrupt from vsc_tp_reset()
dt-bindings: spmi: qcom,x1e80100-spmi-pmic-arb: Add SAR2130P compatible
dt-bindings: spmi: spmi-mtk-pmif: Add compatible for MT8188
spmi: pmic-arb: fix return path in for_each_available_child_of_node()
iio: Move __private marking before struct element priv in struct iio_dev
docs: iio: ad7380: add adaq4370-4 and adaq4380-4
iio: adc: ad7380: add support for adaq4370-4 and adaq4380-4
iio: adc: ad7380: use local dev variable to shorten long lines
iio: adc: ad7380: fix oversampling formula
dt-bindings: iio: adc: ad7380: add adaq4370-4 and adaq4380-4 compatible parts
bus: mhi: host: pci_generic: Use pcim_iomap_region() to request and map MHI BAR
bus: mhi: host: Switch trace_mhi_gen_tre fields to native endian
misc: atmel-ssc: Use of_property_present() for non-boolean properties
misc: keba: Add hardware dependency
...
