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2025-10-02Merge tag 'kbuild-6.18-1' of ↵Linus Torvalds13-79/+146
git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux Pull Kbuild updates from Nathan Chancellor: - Extend modules.builtin.modinfo to include module aliases from MODULE_DEVICE_TABLE for builtin modules so that userspace tools (such as kmod) can verify that a particular module alias will be handled by a builtin module - Bump the minimum version of LLVM for building the kernel to 15.0.0 - Upgrade several userspace API checks in headers_check.pl to errors - Unify and consolidate CONFIG_WERROR / W=e handling - Turn assembler and linker warnings into errors with CONFIG_WERROR / W=e - Respect CONFIG_WERROR / W=e when building userspace programs (userprogs) - Enable -Werror unconditionally when building host programs (hostprogs) - Support copy_file_range() and data segment alignment in gen_init_cpio to improve performance on filesystems that support reflinks such as btrfs and XFS - Miscellaneous small changes to scripts and configuration files * tag 'kbuild-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (47 commits) modpost: Initialize builtin_modname to stop SIGSEGVs Documentation: kbuild: note CONFIG_DEBUG_EFI in reproducible builds kbuild: vmlinux.unstripped should always depend on .vmlinux.export.o modpost: Create modalias for builtin modules modpost: Add modname to mod_device_table alias scsi: Always define blogic_pci_tbl structure kbuild: extract modules.builtin.modinfo from vmlinux.unstripped kbuild: keep .modinfo section in vmlinux.unstripped kbuild: always create intermediate vmlinux.unstripped s390: vmlinux.lds.S: Reorder sections KMSAN: Remove tautological checks objtool: Drop noinstr hack for KCSAN_WEAK_MEMORY lib/Kconfig.debug: Drop CLANG_VERSION check from DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT riscv: Remove ld.lld version checks from many TOOLCHAIN_HAS configs riscv: Unconditionally use linker relaxation riscv: Remove version check for LTO_CLANG selects powerpc: Drop unnecessary initializations in __copy_inst_from_kernel_nofault() mips: Unconditionally select ARCH_HAS_CURRENT_STACK_POINTER arm64: Remove tautological LLVM Kconfig conditions ARM: Clean up definition of ARM_HAS_GROUP_RELOCS ...
2025-10-02Merge tag 'devicetree-for-6.18' of ↵Linus Torvalds22-111/+376
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: "DT core: - Update dtc to upstream version v1.7.2-35-g52f07dcca47c - Add stub for of_get_next_child_with_prefix() - Convert of_msi_map_id() callers to of_msi_xlate() DT bindings: - Convert multiple text board bindings to DT schema format - Add bindings for synaptics,synaptics_i2c touchscreen controller, innolux,n133hse-ea1 and nlt,nl12880bc20-spwg-24 displays, and NXP vf610 reboot controller - Add new Arm Cortex-A320/A520AE/A720AE and C1-Nano/Pro/Premium/Ultra CPUs. Add missing Applied Micro CPU compatibles. Add pu-supply and fsl,soc-operating-points properties for CPU nodes. - Add QCom Glymur PDC and tegra264-agic interrupt controllers - Add samsung,exynos8890-mali GPU to Arm Mali Midgard - Drop Samsung S3C2410 display related bindings - Allow separate DP lane and AUX connections in dp-connector - Add some missing, undocumented vendor prefixes - Add missing '#address-cells' properties in interrupt controller bindings which dtc now warns about - Drop duplicate socfpga-sdram-edac.txt, moxa,moxart-watchdog.txt, fsl/mpic.txt, ti,opa362.txt, and cavium-thunder2.txt legacy text bindings which are already covered by existing schemas. - Various binding fixes for Mediatek platforms in mailbox, regulator, pinctrl, timer, and display - Drop work-around for yamllint quoting of values containing ',' - Various spelling, typo, grammar, and duplicated words fixes in DT bindings and docs - Add binding guidelines for defining properties at top level of schemas, lack of node name ABI, and usage of simple-mfd" * tag 'devicetree-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (81 commits) dt-bindings: arm: altera: Drop socfpga-sdram-edac.txt dt-bindings: gpu: Convert nvidia,gk20a to DT schema dt-bindings: rng: sparc_sun_oracle_rng: convert to DT schema dt-bindings: vendor-prefixes: update regex for properties without a prefix dt-bindings: display: bridge: convert megachips-stdpxxxx-ge-b850v3-fw.txt to yaml scripts: dt_to_config: fix grammar and a typo in --help text dt-bindings: fix spelling, typos, grammar, duplicated words docs: dt: fix grammar and spelling of: base: Add of_get_next_child_with_prefix() stub dt-bindings: trivial-devices: Add compatible string synaptics,synaptics_i2c dt-bindings: soc: mediatek: pwrap: Add power-domains property dt-bindings: pinctrl: mt65xx: Allow gpio-line-names dt-bindings: media: Convert MediaTek mt8173-vpu bindings to DT schema dt-bindings: arm: mediatek: Support mt8183-audiosys variant dt-bindings: mailbox: mediatek,gce-mailbox: Make clock-names optional dt-bindings: regulator: mediatek,mt6331: Add missing compatible dt-bindings: regulator: mediatek,mt6331: Fix various regulator names dt-bindings: regulator: mediatek,mt6332-regulator: Add missing compatible dt-bindings: pinctrl: mediatek,mt7622-pinctrl: Add missing base reg dt-bindings: pinctrl: mediatek,mt7622-pinctrl: Add missing pwm_ch7_2 ...
2025-10-01kernel-doc: output source file name at SEE ALSOMauro Carvalho Chehab3-5/+9
for man pages, it is helpful to know from where the man page were generated. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <ac25496a27a0c90494a634d342207ef1ff6216e9.1759327966.git.mchehab+huawei@kernel.org>
2025-10-01Merge tag 'rust-6.18' of ↵Linus Torvalds2-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux Pull rust updates from Miguel Ojeda: "Toolchain and infrastructure: - Derive 'Zeroable' for all structs and unions generated by 'bindgen' where possible and corresponding cleanups. To do so, add the 'pin-init' crate as a dependency to 'bindings' and 'uapi'. It also includes its first use in the 'cpufreq' module, with more to come in the next cycle. - Add warning to the 'rustdoc' target to detect broken 'srctree/' links and fix existing cases. - Remove support for unused (since v6.16) host '#[test]'s, simplifying the 'rusttest' target. Tests should generally run within KUnit. 'kernel' crate: - Add 'ptr' module with a new 'Alignment' type, which is always a power of two and is used to validate that a given value is a valid alignment and to perform masking and alignment operations: // Checked at build time. assert_eq!(Alignment::new::<16>().as_usize(), 16); // Checked at runtime. assert_eq!(Alignment::new_checked(15), None); assert_eq!(Alignment::of::<u8>().log2(), 0); assert_eq!(0x25u8.align_down(Alignment::new::<0x10>()), 0x20); assert_eq!(0x5u8.align_up(Alignment::new::<0x10>()), Some(0x10)); assert_eq!(u8::MAX.align_up(Alignment::new::<0x10>()), None); It also includes its first use in Nova. - Add 'core::mem::{align,size}_of{,_val}' to the prelude, matching Rust 1.80.0. - Keep going with the steps on our migration to the standard library 'core::ffi::CStr' type (use 'kernel::{fmt, prelude::fmt!}' and use upstream method names). - 'error' module: improve 'Error::from_errno' and 'to_result' documentation, including examples/tests. - 'sync' module: extend 'aref' submodule documentation now that it exists, and more updates to complete the ongoing move of 'ARef' and 'AlwaysRefCounted' to 'sync::aref'. - 'list' module: add an example/test for 'ListLinksSelfPtr' usage. - 'alloc' module: - Implement 'Box::pin_slice()', which constructs a pinned slice of elements. - Provide information about the minimum alignment guarantees of 'Kmalloc', 'Vmalloc' and 'KVmalloc'. - Take minimum alignment guarantees of allocators for 'ForeignOwnable' into account. - Remove the 'allocator_test' (including 'Cmalloc'). - Add doctest for 'Vec::as_slice()'. - Constify various methods. - 'time' module: - Add methods on 'HrTimer' that can only be called with exclusive access to an unarmed timer, or from timer callback context. - Add arithmetic operations to 'Instant' and 'Delta'. - Add a few convenience and access methods to 'HrTimer' and 'Instant'. 'macros' crate: - Reduce collections in 'quote!' macro. And a few other cleanups and improvements" * tag 'rust-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (58 commits) gpu: nova-core: use Alignment for alignment-related operations rust: add `Alignment` type rust: macros: reduce collections in `quote!` macro rust: acpi: use `core::ffi::CStr` method names rust: of: use `core::ffi::CStr` method names rust: net: use `core::ffi::CStr` method names rust: miscdevice: use `core::ffi::CStr` method names rust: kunit: use `core::ffi::CStr` method names rust: firmware: use `core::ffi::CStr` method names rust: drm: use `core::ffi::CStr` method names rust: cpufreq: use `core::ffi::CStr` method names rust: configfs: use `core::ffi::CStr` method names rust: auxiliary: use `core::ffi::CStr` method names drm/panic: use `core::ffi::CStr` method names rust: device: use `kernel::{fmt,prelude::fmt!}` rust: sync: use `kernel::{fmt,prelude::fmt!}` rust: seq_file: use `kernel::{fmt,prelude::fmt!}` rust: kunit: use `kernel::{fmt,prelude::fmt!}` rust: file: use `kernel::{fmt,prelude::fmt!}` rust: device: use `kernel::{fmt,prelude::fmt!}` ...
2025-10-01Merge tag 'timers-core-2025-09-29' of ↵Linus Torvalds1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer core updates from Thomas Gleixner: - Address the inconsistent shutdown sequence of per CPU clockevents on CPU hotplug, which only removed it from the core but failed to invoke the actual device driver shutdown callback. This kept the timer active, which prevented power savings and caused pointless noise in virtualization. - Encapsulate the open coded access to the hrtimer clock base, which is a private implementation detail, so that the implementation can be changed without breaking a lot of usage sites. - Enhance the debug output of the clocksource watchdog to provide better information for analysis. - The usual set of cleanups and enhancements all over the place * tag 'timers-core-2025-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: Fix spelling mistakes in comments clocksource: Print durations for sync check unconditionally LoongArch: Remove clockevents shutdown call on offlining tick: Do not set device to detached state in tick_shutdown() hrtimer: Reorder branches in hrtimer_clockid_to_base() hrtimer: Remove hrtimer_clock_base:: Get_time hrtimer: Use hrtimer_cb_get_time() helper media: pwm-ir-tx: Avoid direct access to hrtimer clockbase ALSA: hrtimer: Avoid direct access to hrtimer clockbase lib: test_objpool: Avoid direct access to hrtimer clockbase sched/core: Avoid direct access to hrtimer clockbase timers/itimer: Avoid direct access to hrtimer clockbase posix-timers: Avoid direct access to hrtimer clockbase jiffies: Remove obsolete SHIFTED_HZ comment
2025-09-30Merge tag 'locking-core-2025-09-26' of ↵Linus Torvalds2-0/+68
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: "Mostly Rust runtime enhancements: - Add initial support for generic LKMM atomic variables in Rust (Boqun Feng) - Add the wrapper for `refcount_t` in Rust (Gary Guo) - Add a new reviewer, Gary Guo" * tag 'locking-core-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: MAINTAINERS: update atomic infrastructure entry to include Rust rust: block: convert `block::mq` to use `Refcount` rust: convert `Arc` to use `Refcount` rust: make `Arc::into_unique_or_drop` associated function rust: implement `kernel::sync::Refcount` rust: sync: Add memory barriers rust: sync: atomic: Add Atomic<{usize,isize}> rust: sync: atomic: Add Atomic<u{32,64}> rust: sync: atomic: Add the framework of arithmetic operations rust: sync: atomic: Add atomic {cmp,}xchg operations rust: sync: atomic: Add generic atomics rust: sync: atomic: Add ordering annotation types rust: sync: Add basic atomic operation mapping framework rust: Introduce atomic API helpers
2025-09-30Merge tag 'hardening-v6.18-rc1' of ↵Linus Torvalds13-2/+297
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening updates from Kees Cook: "One notable addition is the creation of the 'transitional' keyword for kconfig so CONFIG renaming can go more smoothly. This has been a long-standing deficiency, and with the renaming of CONFIG_CFI_CLANG to CONFIG_CFI (since GCC will soon have KCFI support), this came up again. The breadth of the diffstat is mainly this renaming. - Clean up usage of TRAILING_OVERLAP() (Gustavo A. R. Silva) - lkdtm: fortify: Fix potential NULL dereference on kmalloc failure (Junjie Cao) - Add str_assert_deassert() helper (Lad Prabhakar) - gcc-plugins: Remove TODO_verify_il for GCC >= 16 - kconfig: Fix BrokenPipeError warnings in selftests - kconfig: Add transitional symbol attribute for migration support - kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI" * tag 'hardening-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: lib/string_choices: Add str_assert_deassert() helper kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI kconfig: Add transitional symbol attribute for migration support kconfig: Fix BrokenPipeError warnings in selftests gcc-plugins: Remove TODO_verify_il for GCC >= 16 stddef: Introduce __TRAILING_OVERLAP() stddef: Remove token-pasting in TRAILING_OVERLAP() lkdtm: fortify: Fix potential NULL dereference on kmalloc failure
2025-09-30Merge tag 'libcrypto-for-linus' of ↵Linus Torvalds1-3/+24
git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull crypto library updates from Eric Biggers: - Add a RISC-V optimized implementation of Poly1305. This code was written by Andy Polyakov and contributed by Zhihang Shao. - Migrate the MD5 code into lib/crypto/, and add KUnit tests for MD5. Yes, it's still the 90s, and several kernel subsystems are still using MD5 for legacy use cases. As long as that remains the case, it's helpful to clean it up in the same way as I've been doing for other algorithms. Later, I plan to convert most of these users of MD5 to use the new MD5 library API instead of the generic crypto API. - Simplify the organization of the ChaCha, Poly1305, BLAKE2s, and Curve25519 code. Consolidate these into one module per algorithm, and centralize the configuration and build process. This is the same reorganization that has already been successful for SHA-1 and SHA-2. - Remove the unused crypto_kpp API for Curve25519. - Migrate the BLAKE2s and Curve25519 self-tests to KUnit. - Always enable the architecture-optimized BLAKE2s code. * tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (38 commits) crypto: md5 - Implement export_core() and import_core() wireguard: kconfig: simplify crypto kconfig selections lib/crypto: tests: Enable Curve25519 test when CRYPTO_SELFTESTS lib/crypto: curve25519: Consolidate into single module lib/crypto: curve25519: Move a couple functions out-of-line lib/crypto: tests: Add Curve25519 benchmark lib/crypto: tests: Migrate Curve25519 self-test to KUnit crypto: curve25519 - Remove unused kpp support crypto: testmgr - Remove curve25519 kpp tests crypto: x86/curve25519 - Remove unused kpp support crypto: powerpc/curve25519 - Remove unused kpp support crypto: arm/curve25519 - Remove unused kpp support crypto: hisilicon/hpre - Remove unused curve25519 kpp support lib/crypto: tests: Add KUnit tests for BLAKE2s lib/crypto: blake2s: Consolidate into single C translation unit lib/crypto: blake2s: Move generic code into blake2s.c lib/crypto: blake2s: Always enable arch-optimized BLAKE2s code lib/crypto: blake2s: Remove obsolete self-test lib/crypto: x86/blake2s: Reduce size of BLAKE2S_SIGMA2 lib/crypto: chacha: Consolidate into single module ...
2025-09-28checkpatch: suppress strscpy warnings for userspace toolsSuchit Karunakaran1-4/+8
The checkpatch.pl script currently warns against the use of strcpy, strlcpy, and strncpy, recommending strscpy as a safer alternative. However, these warnings are also triggered for code under tools/ and scripts/, which are userspace utilities where strscpy is not available. This patch suppresses these warnings for files in tools/ and scripts/. Link: https://lkml.kernel.org/r/20250923171722.7798-1-suchitkarunakaran@gmail.com Signed-off-by: Suchit Karunakaran <suchitkarunakaran@gmail.com> Acked-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Dwaipayan Ray <dwaipayanray1@gmail.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-28modpost: Initialize builtin_modname to stop SIGSEGVsHugh Dickins1-0/+1
Segmentation fault ./scripts/mod/modpost -o vmlinux.symvers vmlinux.o stops the kernel build. It comes when write_vmlinux_export_c_file() tries to buf_printf alias->builtin_modname. malloc'ed memory is not necessarily zeroed. NULL new->builtin_modname before adding to aliases. Fixes: 5ab23c7923a1 ("modpost: Create modalias for builtin modules") Signed-off-by: Hugh Dickins <hughd@google.com> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/4590a243-0a7e-b7e6-e2d3-cd1b41a12237@google.com Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-09-26scripts: dt_to_config: fix grammar and a typo in --help textMarkus Heidelberg1-4/+4
- grammar: singular/plural inconsistency - typo: "of" -> "or" Signed-off-by: Markus Heidelberg <m.heidelberg@cab.de> Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-09-26scripts/coccinelle: Find PTR_ERR() to %pe candidatesGal Pressman1-0/+34
Add a new Coccinelle script to identify places where PTR_ERR() is used in print functions and suggest using the %pe format specifier instead. For printing error pointers (i.e., a pointer for which IS_ERR() is true) %pe will print a symbolic error name (e.g,. -EINVAL), opposed to the raw errno (e.g,. -22) produced by PTR_ERR(). It also makes the code cleaner by saving a redundant call to PTR_ERR(). The script supports context, report, and org modes. Example transformation: printk("Error: %ld\n", PTR_ERR(ptr)); // Before printk("Error: %pe\n", ptr); // After Signed-off-by: Gal Pressman <gal@nvidia.com> Reviewed-by: Alexei Lazar <alazar@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/1758192227-701925-2-git-send-email-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-25kconfig: Add transitional symbol attribute for migration supportKees Cook11-1/+274
During kernel option migrations (e.g. CONFIG_CFI_CLANG to CONFIG_CFI), existing .config files need to maintain backward compatibility while preventing deprecated options from appearing in newly generated configurations. This is challenging with existing Kconfig mechanisms because: 1. Simply removing old options breaks existing .config files. 2. Manually listing an option as "deprecated" leaves it needlessly visible and still writes them to new .config files. 3. Using any method to remove visibility (.e.g no 'prompt', 'if n', etc) prevents the option from being processed at all. Add a "transitional" attribute that creates symbols which are: - Processed during configuration (can influence other symbols' defaults) - Hidden from user menus (no prompts appear) - Omitted from newly written .config files (gets migrated) - Restricted to only having help sections (no defaults, selects, etc) making it truly just a "prior value pass-through" option. The transitional syntax requires a type argument and prevents type redefinition: config NEW_OPTION bool "New option" default OLD_OPTION config OLD_OPTION bool transitional help Transitional config for OLD_OPTION migration. This allows seamless migration: olddefconfig processes existing CONFIG_OLD_OPTION=y settings to enable CONFIG_NEW_OPTION=y, while CONFIG_OLD_OPTION is omitted from newly generated .config files. Added positive and negative testing via "testconfig" make target. Co-developed-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250923213422.1105654-2-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
2025-09-25kconfig: Fix BrokenPipeError warnings in selftestsKees Cook1-1/+16
The kconfig test harness ("make testconfig") was generating BrokenPipeError warnings when running interactive tests like oldaskconfig and oldconfig: /usr/lib/python3/dist-packages/_pytest/unraisableexception.py:85: PytestUnraisableExceptionWarning: Exception ignored in: <_io.BufferedWriter name=12> Traceback (most recent call last): File "/srv/code/scripts/kconfig/tests/conftest.py", line 127, in oldaskconfig return self._run_conf('--oldaskconfig', dot_config=dot_config, ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ interactive=True, in_keys=in_keys) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ BrokenPipeError: [Errno 32] Broken pipe The issue occurred when the test framework attempted to write to stdin after the conf subprocess had already exited. Wrap stdin write operations in try/except to catch BrokenPipeError and stop sending more input. Add explicit flush() after writes so we can see delivery errors immediately. Ignore BrokenPipeError when closing stdin. Explicitly call wait() to validate subprocess termination. Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250923213422.1105654-1-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
2025-09-24Merge patch series "Add generated modalias to modules.builtin.modinfo"Nathan Chancellor7-60/+107
Alexey Gladkov says: The modules.builtin.modinfo file is used by userspace (kmod to be specific) to get information about builtin modules. Among other information about the module, information about module aliases is stored. This is very important to determine that a particular modalias will be handled by a module that is inside the kernel. There are several mechanisms for creating modalias for modules: The first is to explicitly specify the MODULE_ALIAS of the macro. In this case, the aliases go into the '.modinfo' section of the module if it is compiled separately or into vmlinux.o if it is builtin into the kernel. The second is the use of MODULE_DEVICE_TABLE followed by the use of the modpost utility. In this case, vmlinux.o no longer has this information and does not get it into modules.builtin.modinfo. For example: $ modinfo pci:v00008086d0000A36Dsv00001043sd00008694bc0Csc03i30 modinfo: ERROR: Module pci:v00008086d0000A36Dsv00001043sd00008694bc0Csc03i30 not found. $ modinfo xhci_pci name: xhci_pci filename: (builtin) license: GPL file: drivers/usb/host/xhci-pci description: xHCI PCI Host Controller Driver The builtin module is missing alias "pci:v*d*sv*sd*bc0Csc03i30*" which will be generated by modpost if the module is built separately. To fix this it is necessary to add the generated by modpost modalias to modules.builtin.modinfo. Fortunately modpost already generates .vmlinux.export.c for exported symbols. It is possible to add `.modinfo` for builtin modules and modify the build system so that `.modinfo` section is extracted from the intermediate vmlinux after modpost is executed. Link: https://patch.msgid.link/cover.1758182101.git.legion@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-09-24kbuild: vmlinux.unstripped should always depend on .vmlinux.export.oAlexey Gladkov2-11/+3
Since .vmlinux.export.c is used to add generated by modpost modaliases for builtin modules the .vmlinux.export.o is no longer optional and should always be created. The generation of this file is not dependent on CONFIG_MODULES. Signed-off-by: Alexey Gladkov <legion@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/0e63a9c7741fe8217e4fd7c60afcf057ffa2ef5a.1758182101.git.legion@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-09-24modpost: Create modalias for builtin modulesAlexey Gladkov5-2/+41
For some modules, modalias is generated using the modpost utility and the section is added to the module file. When a module is added inside vmlinux, modpost does not generate modalias for such modules and the information is lost. As a result kmod (which uses modules.builtin.modinfo in userspace) cannot determine that modalias is handled by a builtin kernel module. $ cat /sys/devices/pci0000:00/0000:00:14.0/modalias pci:v00008086d0000A36Dsv00001043sd00008694bc0Csc03i30 $ modinfo xhci_pci name: xhci_pci filename: (builtin) license: GPL file: drivers/usb/host/xhci-pci description: xHCI PCI Host Controller Driver Missing modalias "pci:v*d*sv*sd*bc0Csc03i30*" which will be generated by modpost if the module is built separately. To fix this it is necessary to generate the same modalias for vmlinux as for the individual modules. Fortunately '.vmlinux.export.o' is already generated from which '.modinfo' can be extracted in the same way as for vmlinux.o. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Alexey Gladkov <legion@kernel.org> Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/28d4da3b0e3fc8474142746bcf469e03752c3208.1758182101.git.legion@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-09-24modpost: Add modname to mod_device_table aliasAlexey Gladkov1-3/+12
At this point, if a symbol is compiled as part of the kernel, information about which module the symbol belongs to is lost. To save this it is possible to add the module name to the alias name. It's not very pretty, but it's possible for now. Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Andreas Hindborg <a.hindborg@kernel.org> Cc: Danilo Krummrich <dakr@kernel.org> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: rust-for-linux@vger.kernel.org Signed-off-by: Alexey Gladkov <legion@kernel.org> Acked-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/1a0d0bd87a4981d465b9ed21e14f4e78eaa03ded.1758182101.git.legion@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-09-24kbuild: extract modules.builtin.modinfo from vmlinux.unstrippedMasahiro Yamada2-25/+27
Currently, we assume all the data for modules.builtin.modinfo are available in vmlinux.o. This makes it impossible for modpost, which is invoked after vmlinux.o, to add additional module info. This commit moves the modules.builtin.modinfo rule after modpost. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Alexey Gladkov <legion@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/cdb3e5b9a739666b755cd0097dc34ab69c350e51.1758182101.git.legion@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-09-24kbuild: keep .modinfo section in vmlinux.unstrippedMasahiro Yamada2-2/+8
Keep the .modinfo section during linking, but strip it from the final vmlinux. Adjust scripts/mksysmap to exclude modinfo symbols from kallsyms. This change will allow the next commit to extract the .modinfo section from the vmlinux.unstripped intermediate. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Alexey Gladkov <legion@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/aaf67c07447215463300fccaa758904bac42f992.1758182101.git.legion@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-09-24kbuild: always create intermediate vmlinux.unstrippedMasahiro Yamada1-23/+22
Generate the intermediate vmlinux.unstripped regardless of CONFIG_ARCH_VMLINUX_NEEDS_RELOCS. If CONFIG_ARCH_VMLINUX_NEEDS_RELOCS is unset, vmlinux.unstripped and vmlinux are identiacal. This simplifies the build rule, and allows to strip more sections by adding them to remove-section-y. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/a48ca543fa2305bd17324f41606dcaed9b19f2d4.1758182101.git.legion@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-09-23gcc-plugins: Remove TODO_verify_il for GCC >= 16Kees Cook1-0/+7
GCC now runs TODO_verify_il automatically[1], so it is no longer exposed to plugins. Only use the flag on GCC < 16. Link: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=9739ae9384dd7cd3bb1c7683d6b80b7a9116eaf8 [1] Suggested-by: Christopher Fore <csfore@posteo.net> Link: https://lore.kernel.org/r/20250920234519.work.915-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
2025-09-23coccinelle: platform_no_drv_owner: handle also built-in driversKrzysztof Kozlowski1-0/+9
builtin_platform_driver() and others also use macro platform_driver_register() which sets the .owner=THIS_MODULE, so extend the cocci script to detect these as well. Link: https://lkml.kernel.org/r/20250911184726.23154-2-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Cc: Julia Lawall <julia.lawall@inria.fr> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Palix <nicolas.palix@imag.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-23coccinelle: of_table: handle SPI device ID tablesKrzysztof Kozlowski1-7/+7
'struct spi_device_id' tables also need to be NULL terminated. Link: https://lkml.kernel.org/r/20250911193354.56262-2-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Cc: Julia Lawall <julia.lawall@inria.fr> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Palix <nicolas.palix@imag.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-22scripts: remove sphinx-build-wrapper from scripts/Mauro Carvalho Chehab1-719/+0
Commit 8a298579cdfc ("scripts: sphinx-build-wrapper: get rid of uapi/media Makefile") accidentally added scripts/sphinx-build-wrapper, probably due to some rebase issues. The file was added on a separate patch series, at tools/docs, and has other patches on the top of it, so drop this extra version. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <d26137d908dc7813fafcded2c728ec837e4df073.1758361087.git.mchehab+huawei@kernel.org>
2025-09-22scripts/decode_stacktrace.sh: code: preserve alignmentMatthieu Baerts (NGI0)1-1/+3
With lines having a code to decode, the alignment was not preserved for the first line. With this sample ... [ 52.238089][ T55] RIP: 0010:__ip_queue_xmit+0x127c/0x1820 [ 52.238401][ T55] Code: c1 83 e0 07 48 c1 e9 03 83 c0 03 (...) ... the script was producing the following output: [ 52.238089][ T55] RIP: 0010:__ip_queue_xmit (...) [ 52.238401][ T55] Code: c1 83 e0 07 48 c1 e9 03 83 c0 03 (...) That's because scripts/decodecode doesn't preserve the alignment. No need to modify it, it is enough to give only the "Code: (...)" part to this script, and print the prefix without modifications. With the same sample, we now have: [ 52.238089][ T55] RIP: 0010:__ip_queue_xmit (...) [ 52.238401][ T55] Code: c1 83 e0 07 48 c1 e9 03 83 c0 03 (...) Link: https://lkml.kernel.org/r/20250908-decode_strace_indent-v1-3-28e5e4758080@kernel.org Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Tested-by: Carlos Llamas <cmllamas@google.com> Cc: Breno Leitao <leitao@debian.org> Cc: Elliot Berman <quic_eberman@quicinc.com> Cc: Luca Ceresoli <luca.ceresoli@bootlin.com> Cc: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-22scripts/decode_stacktrace.sh: symbol: preserve alignmentMatthieu Baerts (NGI0)1-14/+12
With lines having a symbol to decode, the script was only trying to preserve the alignment for the timestamps, but not the rest, nor when the caller was set (CONFIG_PRINTK_CALLER=y). With this sample ... [ 52.080924] Call Trace: [ 52.080926] <TASK> [ 52.080931] dump_stack_lvl+0x6f/0xb0 ... the script was producing the following output: [ 52.080924] Call Trace: [ 52.080926] <TASK> [ 52.080931] dump_stack_lvl (arch/x86/include/asm/irqflags.h:19) (dump_stack_lvl is no longer aligned with <TASK>: one missing space) With this other sample ... [ 52.080924][ T48] Call Trace: [ 52.080926][ T48] <TASK> [ 52.080931][ T48] dump_stack_lvl+0x6f/0xb0 ... the script was producing the following output: [ 52.080924][ T48] Call Trace: [ 52.080926][ T48] <TASK> [ 52.080931][ T48] dump_stack_lvl (arch/x86/include/asm/irqflags.h:19) (the misalignment is clearer here) That's because the script had a workaround for CONFIG_PRINTK_TIME=y only, see the previous comment called "Format timestamps with tabs". To always preserve spaces, they need to be recorded along the words. That is what is now done with the new 'spaces' array. Some notes: - 'extglob' is needed only for this operation, and that's why it is set in a dedicated subshell. - 'read' is used with '-r' not to treat a <backslash> character in any special way, e.g. when followed by a space. - When a word is removed from the 'words' array, the corresponding space needs to be removed from the 'spaces' array as well. With the last sample, we now have: [ 52.080924][ T48] Call Trace: [ 52.080926][ T48] <TASK> [ 52.080931][ T48] dump_stack_lvl (arch/x86/include/asm/irqflags.h:19) (the alignment is preserved) Link: https://lkml.kernel.org/r/20250908-decode_strace_indent-v1-2-28e5e4758080@kernel.org Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Tested-by: Carlos Llamas <cmllamas@google.com> Cc: Breno Leitao <leitao@debian.org> Cc: Elliot Berman <quic_eberman@quicinc.com> Cc: Luca Ceresoli <luca.ceresoli@bootlin.com> Cc: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-22scripts/decode_stacktrace.sh: symbol: avoid trailing whitespacesMatthieu Baerts (NGI0)1-6/+1
A few patches slightly improving the output generated by decode_stacktrace.sh. This patch (of 3): Lines having a symbol to decode might not always have info after this symbol. It means ${info_str} might not be set, but it will always be printed after a space, causing trailing whitespaces. That's a detail, but when the output is opened with an editor marking these trailing whitespaces, that's a bit disturbing. It is easy to remove them by printing this variable with a space only if it is set. While at it, do the same with ${module} and print everything in one line. Link: https://lkml.kernel.org/r/20250908-decode_strace_indent-v1-0-28e5e4758080@kernel.org Link: https://lkml.kernel.org/r/20250908-decode_strace_indent-v1-1-28e5e4758080@kernel.org Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Reviewed-by: Carlos Llamas <cmllamas@google.com> Reviewed-by: Breno Leitao <leitao@debian.org> Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Cc: Carlos Llamas <cmllamas@google.com> Cc: Elliot Berman <quic_eberman@quicinc.com> Cc: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-19Merge 6.17-rc6 into kbuild-nextNathan Chancellor2-6/+18
Commit bd7c2312128e ("pinctrl: meson: Fix typo in device table macro") is needed in kbuild-next to avoid a build error with a future change. While at it, address the conflict between commit 41f9049cff32 ("riscv: Only allow LTO with CMODEL_MEDANY") and commit 6578a1ff6aa4 ("riscv: Remove version check for LTO_CLANG selects"), as reported by Stephen Rothwell [1]. Link: https://lore.kernel.org/20250908134913.68778b7b@canb.auug.org.au/ [1] Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-09-18scripts: kdoc_parser.py: warn about Python version only onceMauro Carvalho Chehab1-1/+6
When running kernel-doc over multiple documents, it emits one error message per file with is not what we want: $ python3.6 scripts/kernel-doc.py . --none ... Warning: ./include/trace/events/swiotlb.h:0 Python 3.7 or later is required for correct results Warning: ./include/trace/events/iommu.h:0 Python 3.7 or later is required for correct results Warning: ./include/trace/events/sock.h:0 Python 3.7 or later is required for correct results ... Change the logic to warn it only once at the library: $ python3.6 scripts/kernel-doc.py . --none Warning: Python 3.7 or later is required for correct results Warning: ./include/cxl/features.h:0 Python 3.7 or later is required for correct results When running from command line, it warns twice, but that sounds ok. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Message-ID: <68e54cf8b1201d1f683aad9bc710a99421910356.1758196090.git.mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18tools: kernel-doc: add a see also section at man pagesMauro Carvalho Chehab2-6/+83
While cross-references are complex, as related ones can be on different files, we can at least correlate the ones that belong to the same file, adding a SEE ALSO section for them. The result is not bad. See for instance: $ tools/docs/sphinx-build-wrapper --sphinxdirs driver-api/media -- mandocs $ man Documentation/output/driver-api/man/edac_pci_add_device.9 edac_pci_add_device(9) Kernel Hacker's Manual edac_pci_add_device(9) NAME edac_pci_add_device - Insert the 'edac_dev' structure into the edac_pci global list and create sysfs entries associated with edac_pci structure. SYNOPSIS int edac_pci_add_device (struct edac_pci_ctl_info *pci , int edac_idx ); ARGUMENTS pci pointer to the edac_device structure to be added to the list edac_idx A unique numeric identifier to be assigned to the RETURN 0 on Success, or an error code on failure SEE ALSO edac_pci_alloc_ctl_info(9), edac_pci_free_ctl_info(9), edac_pci_alloc_index(9), edac_pci_del_device(9), edac_pci_cre‐ ate_generic_ctl(9), edac_pci_release_generic_ctl(9), edac_pci_create_sysfs(9), edac_pci_remove_sysfs(9) August 2025 edac_pci_add_device edac_pci_add_device(9) Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Message-ID: <fba25efb41eadad17a54e6275a6191173d702f00.1758196090.git.mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: add support to build manpages from kerneldoc outputMauro Carvalho Chehab1-28/+0
Generating man files currently requires running a separate script. The target also doesn't appear at the docs Makefile. Add support for mandocs at the Makefile, adding the build logic inside sphinx-build-wrapper, updating documentation and dropping the ancillary script. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Message-ID: <3d248d724e7f3154f6e3a227e5923d7360201de9.1758196090.git.mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18scripts: sphinx-pre-install: move it to tools/docsMauro Carvalho Chehab1-1621/+0
As we're reorganizing the place where doc scripts are located, move this one to tools/docs. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Message-ID: <5e2c40d3aebfd67b7ac7817f548bd1fa4ff661a8.1758196090.git.mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18tools/docs: check-variable-fonts.py: split into a lib and an exec fileMauro Carvalho Chehab1-165/+0
As we'll be using the actual code inside sphinx-build-wrapper, split the library from the executable, placing the exec at the new place we've been using: tools/docs No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Message-ID: <8adbc22df1d43b1c5a673799d2333cc429ffe9fc.1758196090.git.mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18scripts: check-variable-fonts.sh: convert to PythonMauro Carvalho Chehab1-27/+77
This script handle errors when trying to build translations with make pdfdocs. As part of our cleanup work to remove hacks from docs Makefile, convert this to python, preparing it to be part of a library to be called by sphinx-build-wrapper. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Message-ID: <d438fb01d2c00e2c2b4ac16f999d9a8ce848251b.1758196090.git.mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18scripts/jobserver-exec: add a help messageMauro Carvalho Chehab1-9/+13
Currently, calling it without an argument shows an ugly error message. Instead, print a message using pythondoc as description. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Message-ID: <64b0339eac54ac0f2b3de3667a7f4f5becb1c6ae.1758196090.git.mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18scripts/jobserver-exec: move its class to the lib directoryMauro Carvalho Chehab2-141/+160
To make it easier to be re-used, move the JobserverExec class to the library directory. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Message-ID: <6be7b161b6c005a9807162ebfd239af6a4e6fa47.1758196090.git.mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18scripts/jobserver-exec: move the code to a classMauro Carvalho Chehab1-67/+151
Convert the code inside jobserver-exec to a class and properly document it. Using a class allows reusing the jobserver logic on other scripts. While the main code remains unchanged, being compatible with Python 2.6 and 3.0+, its coding style now follows a more modern standard, having tabs replaced by a 4-spaces indent, passing autopep8, black and pylint. The code allows using a pythonic way to enter/exit a python code, e.g. it now supports: with JobserverExec() as jobserver: jobserver.run(sys.argv[1:]) With the new code, the __exit__() function should ensure that the jobserver slot will be closed at the end, even if something bad happens somewhere. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Message-ID: <4749921b75d4e0bd85a25d4d94aa2c940fad084e.1758196090.git.mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: a few more dump_typedef() tweaksJonathan Corbet1-9/+11
Merge "typedef" into the typedef_type pattern rather than repeating it later, and add some comments. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: remove redundant comment stripping in dump_typedef()Jonathan Corbet1-3/+0
By the time we get here, comments have long since been stripped out; there is no need to do it again. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: remove some dead code in dump_typedef()Jonathan Corbet1-5/+0
The regex in this block of code makes no sense, and a quick test shows that it never matches anything; simply delete the code. No output changes. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: final dump_function() cleanupsJonathan Corbet1-17/+13
Add some more comments to dump_function(), add some comments, and trim out an unneeded duplicate output_declaration() call. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: consolidate some of the macro-processing logicJonathan Corbet1-23/+20
The logic to handle macros is split in dump_function(); bring it all together into a single place and add a comment saying what's going on. Remove the unneeded is_define_proto variable, and tighten up the code a bit. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: Simplify the dump_function() prototype regexesJonathan Corbet1-10/+10
The regexes for the parsing of function prototypes were more complicated than they needed to be and difficult to understand -- at least, I spent a fair amount of time bashing my head against them. Simplify them, and add some documentation comments as well. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: remove a useless empty capture groupJonathan Corbet1-2/+2
The is_define_proto case in dump_function() uses a regex with an empty capture group - () - that has no use; just take it out. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: remove a couple of spurious regex charactersJonathan Corbet1-1/+1
The "name" regex in dump_function() includes both the tilde and colon characters, but neither has any place in function prototypes. Remove the characters, after which the regex simplifies to "\w+" No output changes. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18doc: kdoc: unify transform handlingJonathan Corbet1-31/+34
Both functions and structs are passed through a set of regex-based transforms, but the two were structured differently, despite being the same thing. Create a utility function to apply transformations and use it in both cases. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: move the function transform patterns out of dump_function()Jonathan Corbet1-43/+35
Move these definitions to file level, where they are executed once, and don't clutter the function itself. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: remove a single-use variableJonathan Corbet1-3/+1
struct_attribute is only used once, so just put its value there directly and drop the name. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2025-09-18docs: kdoc: tighten up the push_parameter() no-type caseJonathan Corbet1-24/+20
The handling of untyped parameters involved a number of redundant tests; restructure the code to remove them and be more compact. No output changes. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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