pm24.git/rust, branch v6.14-rc2

rust: kbuild: do not export generated KASAN ODR symbols

2025-02-06T18:47:04Z

ASAN generates special synthetic symbols to help check for ODR violations. These synthetic symbols lack debug information, so gendwarfksyms emits warnings when processing them. No code should ever have a dependency on these symbols, so we should not be exporting them, just like the __cfi symbols. Signed-off-by: Matthew Maurer Reviewed-by: Alice Ryhl Link: https://lore.kernel.org/r/20250122-gendwarfksyms-kasan-rust-v1-1-5ee5658f4fb6@google.com [ Fixed typo in commit message. Slightly reworded title. - Miguel ] Signed-off-by: Miguel Ojeda

rust: kbuild: add -fzero-init-padding-bits to bindgen_skip_cflags

2025-02-06T16:13:13Z

This seems to break the build when building with gcc15: Unable to generate bindings: ClangDiagnostic("error: unknown argument: '-fzero-init-padding-bits=all'\n") Thus skip that flag. Signed-off-by: Justin M. Forbes Fixes: dce4aab8441d ("kbuild: Use -fzero-init-padding-bits=all") Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/20250129215003.1736127-1-jforbes@fedoraproject.org [ Slightly reworded commit. - Miguel ] Signed-off-by: Miguel Ojeda

rust: init: use explicit ABI to clean warning in future compilers

2025-02-05T23:15:49Z

Starting with Rust 1.86.0 (currently in nightly, to be released on 2025-04-03), the `missing_abi` lint is warn-by-default [1]: error: extern declarations without an explicit ABI are deprecated --> rust/doctests_kernel_generated.rs:3158:1 | 3158 | extern { | ^^^^^^ help: explicitly specify the C ABI: `extern "C"` | = note: `-D missing-abi` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(missing_abi)]` Thus clean it up. Cc: # Needed in 6.12.y and 6.13.y only (Rust is pinned in older LTSs). Fixes: 7f8977a7fe6d ("rust: init: add `{pin_}chain` functions to `{Pin}Init`") Link: https://github.com/rust-lang/rust/pull/132397 [1] Reviewed-by: Gary Guo Reviewed-by: Alice Ryhl Reviewed-by: Fiona Behrens Link: https://lore.kernel.org/r/20250121200934.222075-1-ojeda@kernel.org [ Added 6.13.y to Cc: stable tag. - Miguel ] Signed-off-by: Miguel Ojeda

rust: kbuild: use host dylib naming in rusttestlib-kernel

2025-02-05T23:15:27Z

There seems to have been merge skew between commit b2c261fa8629 ("rust: kbuild: expand rusttest target for macros") and commit 0730422bced5 ("rust: use host dylib naming convention to support macOS") ; the latter replaced `libmacros.so` with `$(libmacros_name)` and the former added an instance of `libmacros.so`. The former was not yet applied when the latter was sent, resulting in a stray `libmacros.so`. Replace the stray with `$(libmacros_name)` to allow `rusttest` to build on macOS. Fixes: 0730422bced5 ("rust: use host dylib naming convention to support macOS") Signed-off-by: Tamir Duberstein Link: https://lore.kernel.org/r/20250201-fix-mac-build-again-v1-1-ca665f5d7de7@gmail.com [ Slightly reworded title. - Miguel ] Signed-off-by: Miguel Ojeda

Merge tag 'kbuild-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2025-01-31T20:07:07Z

Pull Kbuild updates from Masahiro Yamada: - Support multiple hook locations for maint scripts of Debian package - Remove 'cpio' from the build tool requirement - Introduce gendwarfksyms tool, which computes CRCs for export symbols based on the DWARF information - Support CONFIG_MODVERSIONS for Rust - Resolve all conflicts in the genksyms parser - Fix several syntax errors in genksyms * tag 'kbuild-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (64 commits) kbuild: fix Clang LTO with CONFIG_OBJTOOL=n kbuild: Strip runtime const RELA sections correctly kconfig: fix memory leak in sym_warn_unmet_dep() kconfig: fix file name in warnings when loading KCONFIG_DEFCONFIG_LIST genksyms: fix syntax error for attribute before init-declarator genksyms: fix syntax error for builtin (u)int*x*_t types genksyms: fix syntax error for attribute after 'union' genksyms: fix syntax error for attribute after 'struct' genksyms: fix syntax error for attribute after abstact_declarator genksyms: fix syntax error for attribute before nested_declarator genksyms: fix syntax error for attribute before abstract_declarator genksyms: decouple ATTRIBUTE_PHRASE from type-qualifier genksyms: record attributes consistently for init-declarator genksyms: restrict direct-declarator to take one parameter-type-list genksyms: restrict direct-abstract-declarator to take one parameter-type-list genksyms: remove Makefile hack genksyms: fix last 3 shift/reduce conflicts genksyms: fix 6 shift/reduce conflicts and 5 reduce/reduce conflicts genksyms: reduce type_qualifier directly to decl_specifier genksyms: rename cvar_qualifier to type_qualifier ...

Merge tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2025-01-28T20:25:12Z

Pull driver core and debugfs updates from Greg KH: "Here is the big set of driver core and debugfs updates for 6.14-rc1. Included in here is a bunch of driver core, PCI, OF, and platform rust bindings (all acked by the different subsystem maintainers), hence the merge conflict with the rust tree, and some driver core api updates to mark things as const, which will also require some fixups due to new stuff coming in through other trees in this merge window. There are also a bunch of debugfs updates from Al, and there is at least one user that does have a regression with these, but Al is working on tracking down the fix for it. In my use (and everyone else's linux-next use), it does not seem like a big issue at the moment. Here's a short list of the things in here: - driver core rust bindings for PCI, platform, OF, and some i/o functions. We are almost at the "write a real driver in rust" stage now, depending on what you want to do. - misc device rust bindings and a sample driver to show how to use them - debugfs cleanups in the fs as well as the users of the fs api for places where drivers got it wrong or were unnecessarily doing things in complex ways. - driver core const work, making more of the api take const * for different parameters to make the rust bindings easier overall. - other small fixes and updates All of these have been in linux-next with all of the aforementioned merge conflicts, and the one debugfs issue, which looks to be resolved "soon"" * tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (95 commits) rust: device: Use as_char_ptr() to avoid explicit cast rust: device: Replace CString with CStr in property_present() devcoredump: Constify 'struct bin_attribute' devcoredump: Define 'struct bin_attribute' through macro rust: device: Add property_present() saner replacement for debugfs_rename() orangefs-debugfs: don't mess with ->d_name octeontx2: don't mess with ->d_parent or ->d_parent->d_name arm_scmi: don't mess with ->d_parent->d_name slub: don't mess with ->d_name sof-client-ipc-flood-test: don't mess with ->d_name qat: don't mess with ->d_name xhci: don't mess with ->d_iname mtu3: don't mess wiht ->d_iname greybus/camera - stop messing with ->d_iname mediatek: stop messing with ->d_iname netdevsim: don't embed file_operations into your structs b43legacy: make use of debugfs_get_aux() b43: stop embedding struct file_operations into their objects carl9170: stop embedding file_operations into their objects ...

Merge tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2025-01-22T16:28:57Z

Pull networking updates from Paolo Abeni: "This is slightly smaller than usual, with the most interesting work being still around RTNL scope reduction. Core: - More core refactoring to reduce the RTNL lock contention, including preparatory work for the per-network namespace RTNL lock, replacing RTNL lock with a per device-one to protect NAPI-related net device data and moving synchronize_net() calls outside such lock. - Extend drop reasons usage, adding net scheduler, AF_UNIX, bridge and more specific TCP coverage. - Reduce network namespace tear-down time by removing per-subsystems synchronize_net() in tipc and sched. - Add flow label selector support for fib rules, allowing traffic redirection based on such header field. Netfilter: - Do not remove netdev basechain when last device is gone, allowing netdev basechains without devices. - Revisit the flowtable teardown strategy, dealing better with fin, reset and re-open events. - Scale-up IP-vs connection dumping by avoiding linear search on each restart. Protocols: - A significant XDP socket refactor, consolidating and optimizing several helpers into the core - Better scaling of ICMP rate-limiting, by removing false-sharing in inet peers handling. - Introduces netlink notifications for multicast IPv4 and IPv6 address changes. - Add ipsec support for IP-TFS/AggFrag encapsulation, allowing aggregation and fragmentation of the inner IP. - Add sysctl to configure TIME-WAIT reuse delay for TCP sockets, to avoid local port exhaustion issues when the average connection lifetime is very short. - Support updating keys (re-keying) for connections using kernel TLS (for TLS 1.3 only). - Support ipv4-mapped ipv6 address clients in smc-r v2. - Add support for jumbo data packet transmission in RxRPC sockets, gluing multiple data packets in a single UDP packet. - Support RxRPC RACK-TLP to manage packet loss and retransmission in conjunction with the congestion control algorithm. Driver API: - Introduce a unified and structured interface for reporting PHY statistics, exposing consistent data across different H/W via ethtool. - Make timestamping selectable, allow the user to select the desired hwtstamp provider (PHY or MAC) administratively. - Add support for configuring a header-data-split threshold (HDS) value via ethtool, to deal with partial or buggy H/W implementation. - Consolidate DSA drivers Energy Efficiency Ethernet support. - Add EEE management to phylink, making use of the phylib implementation. - Add phylib support for in-band capabilities negotiation. - Simplify how phylib-enabled mac drivers expose the supported interfaces. Tests and tooling: - Make the YNL tool package-friendly to make it easier to deploy it separately from the kernel. - Increase TCP selftest coverage importing several packetdrill test-cases. - Regenerate the ethtool uapi header from the YNL spec, to ease maintenance and future development. - Add YNL support for decoding the link types used in net self-tests, allowing a single build to run both net and drivers/net. Drivers: - Ethernet high-speed NICs: - nVidia/Mellanox (mlx5): - add cross E-Switch QoS support - add SW Steering support for ConnectX-8 - implement support for HW-Managed Flow Steering, improving the rule deletion/insertion rate - support for multi-host LAG - Intel (ixgbe, ice, igb): - ice: add support for devlink health events - ixgbe: add initial support for E610 chipset variant - igb: add support for AF_XDP zero-copy - Meta: - add support for basic RSS config - allow changing the number of channels - add hardware monitoring support - Broadcom (bnxt): - implement TCP data split and HDS threshold ethtool support, enabling Device Memory TCP. - Marvell Octeon: - implement egress ipsec offload support for the cn10k family - Hisilicon (HIBMC): - implement unicast MAC filtering - Ethernet NICs embedded and virtual: - Convert UDP tunnel drivers to NETDEV_PCPU_STAT_DSTATS, avoiding contented atomic operations for drop counters - Freescale: - quicc: phylink conversion - enetc: support Tx and Rx checksum offload and improve TSO performances - MediaTek: - airoha: introduce support for ETS and HTB Qdisc offload - Microchip: - lan78XX USB: preparation work for phylink conversion - Synopsys (stmmac): - support DWMAC IP on NXP Automotive SoCs S32G2xx/S32G3xx/S32R45 - refactor EEE support to leverage the new driver API - optimize DMA and cache access to increase raw RX performances by 40% - TI: - icssg-prueth: add multicast filtering support for VLAN interface - netkit: - add ability to configure head/tailroom - VXLAN: - accepts packets with user-defined reserved bit - Ethernet switches: - Microchip: - lan969x: add RGMII support - lan969x: improve TX and RX performance using the FDMA engine - nVidia/Mellanox: - move Tx header handling to PCI driver, to ease XDP support - Ethernet PHYs: - Texas Instruments DP83822: - add support for GPIO2 clock output - Realtek: - 8169: add support for RTL8125D rev.b - rtl822x: add hwmon support for the temperature sensor - Microchip: - add support for RDS PTP hardware - consolidate periodic output signal generation - CAN: - several DT-bindings to DT schema conversions - tcan4x5x: - add HW standby support - support nWKRQ voltage selection - kvaser: - allowing Bus Error Reporting runtime configuration - WiFi: - the on-going Multi-Link Operation (MLO) effort continues, affecting both the stack and in drivers - mac80211/cfg80211: - Emergency Preparedness Communication Services (EPCS) station mode support - support for adding and removing station links for MLO - add support for WiFi 7/EHT mesh over 320 MHz channels - report Tx power info for each link - RealTek (rtw88): - enable USB Rx aggregation and USB 3 to improve performance - LED support - RealTek (rtw89): - refactor power save to support Multi-Link Operations - add support for RTL8922AE-VS variant - MediaTek (mt76): - single wiphy multiband support (preparation for MLO) - p2p device support - add TP-Link TXE50UH USB adapter support - Qualcomm (ath10k): - support for the QCA6698AQ IP core - Qualcomm (ath12k): - enable MLO for QCN9274 - Bluetooth: - Allow sysfs to trigger hdev reset, to allow recovering devices not responsive from user-space - MediaTek: add support for MT7922, MT7925, MT7921e devices - Realtek: add support for RTL8851BE devices - Qualcomm: add support for WCN785x devices - ISO: allow BIG re-sync" * tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1386 commits) net/rose: prevent integer overflows in rose_setsockopt() net: phylink: fix regression when binding a PHY net: ethernet: ti: am65-cpsw: streamline TX queue creation and cleanup net: ethernet: ti: am65-cpsw: streamline RX queue creation and cleanup net: ethernet: ti: am65-cpsw: ensure proper channel cleanup in error path ipv6: Convert inet6_rtm_deladdr() to per-netns RTNL. ipv6: Convert inet6_rtm_newaddr() to per-netns RTNL. ipv6: Move lifetime validation to inet6_rtm_newaddr(). ipv6: Set cfg.ifa_flags before device lookup in inet6_rtm_newaddr(). ipv6: Pass dev to inet6_addr_add(). ipv6: Convert inet6_ioctl() to per-netns RTNL. ipv6: Hold rtnl_net_lock() in addrconf_init() and addrconf_cleanup(). ipv6: Hold rtnl_net_lock() in addrconf_dad_work(). ipv6: Hold rtnl_net_lock() in addrconf_verify_work(). ipv6: Convert net.ipv6.conf.${DEV}.XXX sysctl to per-netns RTNL. ipv6: Add __in6_dev_get_rtnl_net(). net: stmmac: Drop redundant skb_mark_for_recycle() for SKB frags net: mii: Fix the Speed display when the network cable is not connected sysctl net: Remove macro checks for CONFIG_SYSCTL eth: bnxt: update header sizing defaults ...

Merge tag 'lsm-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

2025-01-22T04:03:04Z

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

Merge tag 'rust-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux

2025-01-22T01:48:03Z

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) { pr_info!("{p}\n"); } let a: Arc = Arc::new(42i32, GFP_KERNEL)?; let b: Arc = 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 ...

Merge tag 'locking-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-01-21T18:10:24Z

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