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2026-09-12scripts/mksysmap: fix escape of '$' in the __pi_ patternLorenzo Stoakes (ARM)
Commit b18b047002b7 ("kbuild: change scripts/mksysmap into sed script") converted scripts/mksysmap from a shell script to a sed script. However an error was made - escaping of '$' required \\ escaping in shell but only \ in a sed script. This was mostly corrected in commit 7a6c355b55c0 ("scripts/mksysmap: Fix escape chars '$'"), but this fix missed arm64 PIE namespace local symbols like __pi_$x and __pi_$d which appear in System.map and /proc/kallsyms: $ grep __pi_\\$ /proc/kallsyms | sort -u 0000000000000000 d __pi_$d 0000000000000000 t __pi_$x Fix the escaping properly. Fixes: b18b047002b7 ("kbuild: change scripts/mksysmap into sed script") Assisted-by: LLM Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Link: https://patch.msgid.link/20260908-build-speedup-v1-2-5dc1ac01672d@kernel.org Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-09-12scripts/mksysmap: drop the MODULE_INFO() symbols from kallsymsLorenzo Stoakes (ARM)
Commit 3e86e4d74c04 ("kbuild: keep .modinfo section in vmlinux.unstripped") keeps .modinfo symbols out of System.map and kallsyms, which assumes unique IDs have a format like '__UNIQUE_ID_modinfo123'. However, commit afb026b6d35c ("compiler: Tweak __UNIQUE_ID() naming"), sent in the same cycle, changes this to '__UNIQUE_ID_modinfo_123'. As a result this regexp has never matched and every kernel since v6.18 has carried one kallsyms entries for every MODULE_INFO() declaration in the kernel whether the modules are compiled or not. That's 5,810 entries for an x86 defconfig build and 15,200 for arm64. On x86 defconfig that is 113 KiB of kallsyms tables and 32 KiB of bzImage, and every lookup walks past them. Fix the pattern. Fixes: 3e86e4d74c04 ("kbuild: keep .modinfo section in vmlinux.unstripped") Assisted-by: LLM Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org> Reviewed-by: Nicolas Schier <nsc@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://patch.msgid.link/20260908-build-speedup-v1-1-5dc1ac01672d@kernel.org Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-09-12scripts/sorttable: Mark long_size as __maybe_unusedNathan Chancellor
When building in a kernel tree prior to commit b055f4c431e3 ("sorttable: Move ELF parsing into scripts/elf-parse.[ch]") with clang-23 or newer, which implements a new warning under -Wunused-but-set-variable for static global variable, there is a warning from sorttable because long_size is unused when MCOUNT_SORT_ENABLED is not set: scripts/sorttable.c:452:12: error: variable 'long_size' set but not used [-Werror,-Wunused-but-set-global] 452 | static int long_size; | ^ Mark long_size as __maybe_unused to avoid inserting more ugly #ifdef directives while insuring the warning does not reappear, as the aforementioned change does not alter the uses of long_size, so it appears to be coincidence that the warning disappears after this refactoring. Cc: stable@vger.kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nicolas Schier <n.schier@fritz.com> Link: https://patch.msgid.link/20260831-sorttable-long_size-unused-but-set-global-v1-1-8a96b88697e5@kernel.org Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-09-12kbuild: don't delete in-flight filechk temporaries in asm-headersVlad Poenaru
Commit 2d69b891e646 ("kbuild: Support generated asm-headers in subdirectories") switched the stale-wrapper sweep in scripts/Makefile.asm-headers from $(wildcard $(obj)/*.h) to a find(1) invocation, so that generated headers in subdirectories are considered. The two do not match the same set of files. Make's $(wildcard) uses glob semantics, where a leading '.' has to be matched explicitly, whereas find's -name uses fnmatch() without FNM_PERIOD, so '*.h' matches dotfiles as well. filechk writes its output to $(dir $@).tmp_$(notdir $@) before renaming it into place, so such a scratch file, if it happens to exist in $(obj) when the sub-make is parsed, is now picked up in old-headers. It appears in neither generic-y, generated-y nor syscall-y, is therefore classified as unwanted, and cmd_remove deletes it. On x86 this races with archprepare, which lists both asm-generic and arch/x86/include/generated/asm/cpufeaturemasks.h as prerequisites. Under -j they run concurrently against the same directory, and the build fails intermittently: mv: cannot stat 'arch/x86/include/generated/asm/.tmp_cpufeaturemasks.h': No such file or directory make[1]: *** [arch/x86/Makefile:269: arch/x86/include/generated/asm/cpufeaturemasks.h] Error 1 The same commit also converted the generic wrapper rule to filechk, so those wrappers now create .tmp_*.h in $(obj) too and can race among themselves. Restore the previous behaviour by excluding dotfiles from the sweep. Subdirectories, which is what the find(1) conversion was for, keep being descended into. While at it, quote the -name argument: it is currently expanded by the shell against the build directory before find sees it. Fixes: 2d69b891e646 ("kbuild: Support generated asm-headers in subdirectories") Signed-off-by: Vlad Poenaru <vlad.wing@gmail.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Reviewed-by: Nicolas Schier <n.schier@fritz.com> Link: https://patch.msgid.link/20260902161347.4163577-1-vlad.wing@gmail.com Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-09-11HID: fix semantic patch and improve its performanceJulia Lawall
Replace "expression" with "identifier" in the declaration of hdev. This is necessary because hdev is used as the name of a function parameter. Move the two uses of @p2 to the relevant function names. Convert <... ...>, meaning that the contained pattern is optional, to use ..., when any, and exists. This requires that the function contain calls to hid_hw_start, etc, which reduces the set of files that are considered for matching against this pattern. Reported-by: Ricardo Ribalda <ribalda@chromium.org> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Signed-off-by: Jiri Kosina <jkosina@suse.com>
2026-09-09module/kallsyms: Rename is_mapping_symbol() to is_ignored_kernel_symbol()Tiezhu Yang
The helper function is_mapping_symbol() historically checks for both local labels prefixed with ".L" or "L0" and mapping symbols prefixed with "$". Rename it to is_ignored_kernel_symbol() to better reflect this actual behavior and scope, preventing conceptual confusion. While at it, update the related non-module files, no functional changes. Suggested-by: Petr Pavlu <petr.pavlu@suse.com> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Reviewed-by: Huacai Chen <chenhuacai@loongson.cn> Reviewed-by: Petr Pavlu <petr.pavlu@suse.com> Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
2026-09-01scripts/gcc-plugins: suppress recorded GCC switches for extmod buildsJaihind Yadav
With GCC plugins enabled, external module builds can record -fplugin=... paths in DWARF producer metadata via -grecord-gcc-switches, leaking host/build specific paths and triggering QA checks. Handle this in scripts/Makefile.gcc-plugins for KBUILD_EXTMOD builds by adding -gno-record-gcc-switches to plugin cflags. This keeps plugin behavior unchanged while avoiding absolute plugin path leakage in external module debug metadata. Suggested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/all/20260817185146.GC1249844@ax162/ Signed-off-by: Jaihind Yadav <jaihindy@qti.qualcomm.com> Link: https://patch.msgid.link/20260820060116.786173-1-jaihindy@qti.qualcomm.com Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2026-08-31klp-build: Fix wrong index in funcs cleanup error pathYafang Shao
In the object allocation loop, when kzalloc() for funcs fails, the cleanup loop uses `objs[i].funcs` instead of `objs[j].funcs`. Since `objs[i].funcs` is still NULL at that point, it repeatedly calls kfree(NULL) and leaks all previously allocated funcs arrays. Fixes: 59adee07b568 ("livepatch/klp-build: Add stub init code for livepatch modules") Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Acked-by: Song Liu <song@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Miroslav Benes <mbenes@suse.cz> Link: https://patch.msgid.link/20260816090442.18128-2-laoar.shao@gmail.com Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
2026-08-31setlocalversion: make tag local to try_tag()Yuntao Wang
The tag variable is only used by try_tag(), but is currently declared local to scm_version() and modified by try_tag(). Make tag local to try_tag() instead and remove the unused declaration from scm_version(). No functional changes. Signed-off-by: Yuntao Wang <yuntao.wang@linux.dev> Link: https://patch.msgid.link/20260823094913.421144-1-yuntao.wang@linux.dev Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2026-08-31scripts/mkcompile_h: Update LINUX_COMPILE_HOST command substitution syntaxBhaskar Chowdhury
The assignment of LINUX_COMPILE_HOST uses the classic backtick style for its command substitution but the rest of the script uses the more common '$()'. Update LINUX_COMPILE_HOST to match for consistency. Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Link: https://patch.msgid.link/20260818204804.2985008-1-unixbhaskar@gmail.com Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2026-08-31kconfig: error out for recursive rangeJulian Braha
Currently, it is possible to create recursive ranges with Kconfig, such as: config C int "Enable C" default 1 range A B config A int "Enable A" default 2 range B C config B int "Enable B" default 3 range A C The current outcome of this example above, is that all 3 options are set to 2. There is currently no warning or error if a user attempts this. Several attributes are already checked for recursion, including 'depends on', 'select', and 'imply', and we can extend this to 'range' for numeric options (int and hex types). Recursive ranges are currently not used anywhere in the tree, so it is already safe to make this a hard error. Assisted-by: Codex:gpt-5.6-sol Signed-off-by: Julian Braha <julianbraha@gmail.com> Link: https://patch.msgid.link/20260816215354.1499059-1-julianbraha@gmail.com Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2026-08-31dtc: dt-check-style: Check for indentation also in continued lines of ↵Krzysztof Kozlowski
bindings example Add missing code in check_tab_in_yaml_example() for example in the bindings to apply the same rule of discouraged tab character also for continued lines (iterating over all DtsLines is not enough). Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260829-dts-style-checker-sort-v1-6-6693a37d7ae1@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Check for indentation also in continued lines of DTSKrzysztof Kozlowski
Add missing code in check_mixed_indent_chars() for DTS to apply the same rule of too many spaces for indentation also for continued lines (iterating over all DtsLines is not enough). Reported-by: sashiko-bot@kernel.org Closes: https://lore.kernel.org/all/20260709180118.6935B1F000E9@smtp.kernel.org/ Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260829-dts-style-checker-sort-v1-5-6693a37d7ae1@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Add test for node and property name stylesKrzysztof Kozlowski
Common style violation is usage of underscores in node or property names, so add rules for following recommended names. There is plenty of legacy approach, so add the rules only for 'strict' mode of checking. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260829-dts-style-checker-sort-v1-4-6693a37d7ae1@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Process property names with a question markKrzysztof Kozlowski
Devicetree spec allows question mark '?' in property names and such code is also accepted by DTC, thus catch such properties as a valid code, even if discouraged. Otherwise certain rules checking for property names would ignore that line. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260829-dts-style-checker-sort-v1-3-6693a37d7ae1@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Sort rule functions by nameKrzysztof Kozlowski
Sort all the functions implementing style rules by name, so managing this will be at bit easier and simultaneous addons of new rules less conflict-prone. No functional changes, except adding underscore to _detect_indent_unit() to match other helpers used by the rules. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260829-dts-style-checker-sort-v1-2-6693a37d7ae1@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Sort rule directory by nameKrzysztof Kozlowski
Sort the array with all the rules, so managing this will be at bit easier and simultaneous addons of new rules less conflict-prone. No functional changes. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260829-dts-style-checker-sort-v1-1-6693a37d7ae1@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Add warning for redundant white-spacesKrzysztof Kozlowski
Show warnings of too many spaces around '=', after ':', before '{' and ';' characters, or using tabs for these. Both in-tree DTS and DT bindings have many warnings for the first case (too mant spaces around '='), thus keep this one only for 'strict' mode. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260826-n-dts-style-checker-continued-v6-9-f270b1e81f8e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Add test for trailing white-space in DTSKrzysztof Kozlowski
Add unit tests for expected warnings for trailing white-spaces in DTS (there is only one for YAML files). Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260826-n-dts-style-checker-continued-v6-8-f270b1e81f8e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Call _strip_strings_and_comments() only onceKrzysztof Kozlowski
More than one rule evaluates pure code - stripped from comments and indentation - thus store this pure code in DtsLine class for better performance. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260826-n-dts-style-checker-continued-v6-7-f270b1e81f8e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Replace Test User email with Rob HerringKrzysztof Kozlowski
scripts/get_maintainer.pl reports email from the example binding fixtures, so let's spare someone at @example.com from receiving bunch of odd emails. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260826-n-dts-style-checker-continued-v6-6-f270b1e81f8e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Introduce 'stricter' modeKrzysztof Kozlowski
Two rules, which are enabled in 'strict' mode make little sense for DTS: 1. line-length, limiting length of line to 80 characters: DTS often has a bit longer lines, especially for interconnects or heavily nested opp-level. Checkpatch already does not warn for exceeding 80 characters. 2. unused-labels, discouraging unused labels in DTS or YAML (not DTSI or DTSO): while not harming this leads to many false positives, e.g. unused PMIC regulators in DTS. Introduce another 'mode' of running beside existing relaxed and strict: a 'stricter' one where these two rules are moved for DTS. Intention is to have in-tree DTS passing 'strict' mode. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260826-n-dts-style-checker-continued-v6-5-f270b1e81f8e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Consistently call 'kind' as 'file_type'Krzysztof Kozlowski
Script was using different names for variables or attributes with the same meaning: the type of file (YAML, DTS, DTSI, DTSO). Unify 'kind', 'input_kind' and function input_kind() to consistent 'file_type'. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260826-n-dts-style-checker-continued-v6-4-f270b1e81f8e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Fix alignment of values in continued property linesKrzysztof Kozlowski
Continued lines in property assignments should be indented to opening '<' or '"' if they also start with that character, e.g.: reg = <0x1000 0x100>, <0x2000 0x100>; If the continued line is part of previous phandle, then alignment should be to inner values to make it more readable, e.g.: reg = <0x1000 0x100 0x2000 0x100>; Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260826-n-dts-style-checker-continued-v6-3-f270b1e81f8e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Drop stray backslash before quote for ↵Krzysztof Kozlowski
continuation-alignment Drop stray backslash before the quote character in a warning for continuation-alignment rule: (under "<" or \"). Since the '"' character has no quotes, drop the quotes also from '<'. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260826-n-dts-style-checker-continued-v6-2-f270b1e81f8e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-31dtc: dt-check-style: Handle sorting of top-level nodes and propertiesKrzysztof Kozlowski
Top-level DTS (but not example in the bindings) has only two nodes with unit-addresses: memory@ and soc@. There are two special cases here, in terms of coding style: 1. The unit-address of memory is often not known thus set to @0, because it is filled up by bootloader. 2. There is mixture of non-unit-address and unit-address nodes. Therefore usually the DTS chooses for the top-level part sorting by the node name, not the unit address. Also the properties have one exception: 'model' property is supposed to be before the 'compatible'. This cannot be applied to the entire DTS, because sound cards have also 'model' where it is supposed to follow standard rules (after the 'compatible'). Root node is just special. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260826-n-dts-style-checker-continued-v6-1-f270b1e81f8e@oss.qualcomm.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2026-08-30Merge tag 'cocci-7.3-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux Pull Coccinelle updates from Julia Lawall: - Clean up a number of the semantic patches in the scripts/coccinelle directory, particularly with respect to functions that no longer exist in the kernel (Sang-Heon Jeon) He and I have also done some reorganizations that improve performance. - Eliminate some false positives (me) - Fix an out of date URL (相浦彰) * tag 'cocci-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux: coccinelle: ifnulldev_put: update error message coccinelle: ifnulldev_put: update outdated helper names coccinelle: atomic_as_refcounter: drop atomic_long_dec_and_lock coccinelle: kfree_mismatch: drop vmalloc_exec coccinelle: pool_zalloc-simple: drop the pci_pool_alloc rules coccinelle: zalloc-simple: drop the kmem_alloc rules coccinelle: alloc_cast: drop removed allocators coccinelle: remove obsolete pci_free_consistent.cocci scripts: coccinelle: devm_free: reduce false positives coccinelle: misc: struct_size: drop unneeded parentheses coccinelle: mini_lock: improve performance when searching loops coccinelle: api: check for macro context coccinelle: update Coccinelle website URL coccinelle: misc: minmax: avoid unhelpful isomorphisms coccinelle: misc: minmax: check for the presence of if cases coccinelle: misc: minmax: drop unneeded parentheses coccinelle: misc: minmax: improve performance when no candidate exists coccinelle: double_lock: improve performance when no double lock exists
2026-08-30Merge tag 'rust-fixes-7.3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux Pull Rust fixes from Miguel Ojeda: "Toolchain and infrastructure: - Fix KCFI failures, such as in Rust doctests, by disabling function merging when CFI is enabled. Gary reported the LLVM bug to upstream and it is now fixed in their mainline. - Fix 'objtool' fallthrough warnings under the experimental 'CONFIG_RUST_INLINE_HELPERS' by passing (for the combined Rust and helpers code) the LLVM options needed to preserve the unreachable traps that 'rustc' normally emits. In addition, fix 'objtool' errors when LTO is enabled on top, by also filtering out the LTO flags (for the combined Rust and helpers code) so that the traps are kept in place. - Fix 'objtool' warnings by adding one more 'noreturn' function. - Fix 'make rusttest' target when the 'rustc-dev' component is installed and Rust >= 1.82.0, <= 1.87.0 is used. 'kernel' crate: - 'num' module: fix soundness issue in the 'Bounded' conversion from 'bool' by restricting the conversions to unsigned 'Bounded'. - 'jump_label' module: fix future 'make rusttest' target failures when 'ARCH=' is set to an arch different than the host's. - 'list' module: fix incorrect 'pop_back()' comment" * tag 'rust-fixes-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: rust: kbuild: disambiguate `zerocopy_derive` for `rusttest` rust: num: restrict bool conversion to unsigned Bounded kbuild: rust: keep Rust objects out of Clang LTO with inline helpers kbuild: rust: preserve unreachable traps with inline helpers rust: cfi: disable function merging if CFI is enabled rust: jump_label: skip arch-specific asm in `testlib` builds objtool/rust: add one more `noreturn` Rust function rust: kernel: list: fix incorrect pop_back example comment
2026-08-30coccinelle: ifnulldev_put: update error messageJulia Lawall
Update the report and org mode messages to reflect the new function names. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-30coccinelle: ifnulldev_put: update outdated helper namesSang-Heon Jeon
dev_put_track() and dev_hold_track() were renamed to netdev_put() and netdev_hold() by commit d62607c3fe45 ("net: rename reference+tracking helpers"). So update the names. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-30coccinelle: atomic_as_refcounter: drop atomic_long_dec_and_lockSang-Heon Jeon
atomic_long_dec_and_lock() has never existed. So drop it from the rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-30coccinelle: kfree_mismatch: drop vmalloc_execSang-Heon Jeon
vmalloc_exec() was removed by commit 7a0e27b2a0ce ("mm: remove vmalloc_exec"). So drop it from the rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-30coccinelle: pool_zalloc-simple: drop the pci_pool_alloc rulesSang-Heon Jeon
pci_pool_alloc() and pci_pool_zalloc() were removed by commit 88dee3b0efe4 ("PCI: Remove unused pci_pool wrappers"). So drop the pci_pool_alloc rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-25Merge tag 'char-misc-7.3-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc/IIO/etc driver updates from Greg KH: "Here is the big set of char, misc, iio, counter, fpga, and other small driver subsystems for 7.3-rc1. Overall, due to some driver removals we only added a bit more code than removed, which was a nice change. Highlights in this merge request are: - Loads of IIO driver updates and additions - binder driver updates (more on that below...) - Removal of the SGI XP and GRU drivers as they are not used anymore and turn out to be pretty insecure overall - Removal of the obsolete ibmasm driver as it's not being used anymore - Coresight driver updates and additions - Mei driver udpates - Counter driver updates - FPGA driver updates - ICC driver updates - lots and lots of other tiny driver updates to resolve reported issues All of these have been in linux-next for a while" * tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (513 commits) iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF iio: adc: pac1921: fix wrong channel used in trigger handler read iio: light: gp2ap002: re-enable irq if runtime suspend fails iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes iio: light: apds9306: fix PM reference leak in apds9306_read_data() iio: gyro: mpu3050: fix sign of raw angular velocity readings iio: srf04: fix pm_runtime handling on probe error path iio: adc: ad4080: configure backend data size iio: adc: adi-axi-adc: add data size support for AD408X backend iio: chemical: atlas-sensor: fix PM reference leak in buffer postenable iio: dac: ad5446: fix OF module device table iio: light: opt4001: Fix reversed GENMASK() arguments in fault count mask iio: light: opt4001: Reject integration times with a non-zero seconds part iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem() iio: light: opt4001: Fix power down clearing bits of the wrong register iio: light: opt4060: Fix incorrect register name in threshold read error message iio: light: opt4060: Fix pointer type passed to div_u64_rem() iio: light: opt4060: Reject integration times with a non-zero seconds part iio: light: ltrf216a: fix runtime PM reference leak in error path iio: pressure: dps310: fix NULL pointer dereference on ACPI probe ...
2026-08-23coccinelle: zalloc-simple: drop the kmem_alloc rulesSang-Heon Jeon
- kmem_alloc() was removed by commit f078d4ea8276 ("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit 10634530f7ba ("xfs: convert kmem_zalloc() to kzalloc()") So drop the kmem_alloc rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23coccinelle: alloc_cast: drop removed allocatorsSang-Heon Jeon
- pci_alloc_consistent() and pci_zalloc_consistent() were removed by commit 7968778914e5 ("PCI: Remove the deprecated "pci-dma-compat.h" API") - kmem_alloc() was removed by commit f078d4ea8276 ("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit 10634530f7ba ("xfs: convert kmem_zalloc() to kzalloc()") - kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers") So drop them from the rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23coccinelle: remove obsolete pci_free_consistent.cocciSang-Heon Jeon
pci_alloc_consistent() and pci_free_consistent() were removed by commit 7968778914e5 ("PCI: Remove the deprecated "pci-dma-compat.h" API"). So remove the obsolete script. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23scripts: coccinelle: devm_free: reduce false positivesJulia Lawall
False positives could be introduced due to allocations using the new _obj functions. Add these to the "safe" rule accordingly. False positives could also be introduced when the same variable name has two possible types. Incorporate type information to avoid reporting this case This does lead to false negatives when no type information is available. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Reported-by: Ricardo Ribalda <ribalda@chromium.org>
2026-08-23coccinelle: misc: struct_size: drop unneeded parenthesesSang-Heon Jeon
The outer parentheses and the single-branch disjunction don't matter when just matching and reporting a line. Eliminating them reduces the complexity of the pattern to match and gives a performance improvement in the non-patch cases, like the previous minmax change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23coccinelle: mini_lock: improve performance when searching loopsSang-Heon Jeon
The 'looped' rule collects the returns inside a for loop to prevent 'err' from reporting them. It searches every for loop in the file, and on files with large loop bodies the search explodes. For example, kernel/bpf/verifier.c runs for over 200 seconds, almost entirely in 'looped' according to --profile. Since the kernel .cocciconfig sets a 200 second timeout, coccicheck silently skips the file. To avoid this, collect the candidate returns first, so that 'looped' checks only those positions. 'err' then excludes what 'looped' found. Every return that 'err' can report is also a candidate, so the same returns are excluded as before and the output does not change. A report-mode run over every .c file in the tree produces identical output. So verifier.c now finishes well within the timeout, in a few seconds. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23coccinelle: api: check for macro contextJulia Lawall
A cast on a call to an allocation function that is the body of a macro can be useful, as it ensures tha the macro is used for allocating objects of the right type. Add two new rules to ignore the macro case. Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23coccinelle: update Coccinelle website URL相浦彰 / AIURA，AKIRA
The old Coccinelle project URL is no longer available. Replace it with the current Coccinelle homepage already referenced by Documentation/dev-tools/coccinelle.rst. Signed-off-by: Akira Aiura <akira.aiura.bj@hitachi.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2026-08-23coccinelle: misc: minmax: avoid unhelpful isomorphismsJulia Lawall
Avoid isomorphisms that introduce comparisons with 0 that do not occur in code. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23coccinelle: misc: minmax: check for the presence of if casesJulia Lawall
As done previously for the ternary command, check that a file contains the min or max if pattern before applying the minif and maxif rules. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23coccinelle: misc: minmax: drop unneeded parenthesesJulia Lawall
The outer parentheses don't matter when just matching an returning a line. Eliminating them reduces the complexity of the pattern to match and gives a small performance improvement in the non-patch cases. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23coccinelle: misc: minmax: improve performance when no candidate existsSang-Heon Jeon
The rules that report an opencoded min() or max() search every function body, even when the file contains nothing to find. To avoid this, collect the candidates first and run the search only when one exists. A candidate is any conditional expression whose condition is a comparison. Every opencoded min() or max() is also a candidate, so the same opportunities are reported as before and the output does not change. A report-mode run over every .c file in the tree produces identical output. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23coccinelle: double_lock: improve performance when no double lock existsSang-Heon Jeon
The 'balanced' rule collects the locks that are taken and released under the same condition, to prevent them from being reported as a double lock. It runs on every file that contains a lock call. To avoid this, collect the double-lock candidates first, so that 'balanced' runs only when one exists. The report then excludes what 'balanced' found. Every double lock that can be reported is also a candidate, so the same reports are made as before and the output does not change. A report-mode run over every .c file in the tree produces identical output. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2026-08-23kbuild: rust: keep Rust objects out of Clang LTO with inline helpersMiguel Ojeda
Under `CONFIG_LTO_CLANG` + `CONFIG_RUST_INLINE_HELPERS`, one may hit `objtool` errors such as: vmlinux.o: error: objtool: _R..._3Gsp4boot+0xd6a: can't find jump dest instruction at .text._R..._3Gsp4boot+0x1dfd The reason is that in such builds, the Clang invocation that compiles the combined Rust plus helpers bitcode emits LLVM bitcode (again) -- the final code generation happens in the linker's LTO step, which the `-mllvm` trap options passed to Clang do not reach. This, in turn, means that unreachable traps are missing, and the impossible paths do not merely fallthrough to the next symbol, but past the end of their own section, since LTO builds place each function in its own section. Thus filter `CC_FLAGS_LTO` out of the Clang invocation, so that it always emits machine code directly, with the traps in place. Assisted-by: LLM Cc: Gary Guo <gary@garyguo.net> Cc: Boqun Feng <boqun@kernel.org> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Matthew Maurer <mmaurer@google.com> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@vger.kernel.org Fixes: 3a2486cc1da5 ("kbuild: rust: provide an option to inline C helpers into Rust") Acked-by: Gary Guo <gary@garyguo.net> Link: https://patch.msgid.link/20260816133233.197500-2-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-08-23kbuild: rust: preserve unreachable traps with inline helpersMiguel Ojeda
When `CONFIG_RUST_INLINE_HELPERS` is enabled, it is possible to hit `objtool` warnings like: vmlinux.o: warning: objtool: _R..._4cmdq12CommandToGsp4init() falls through to next function _R..._4core5array4iter8IntoIterRShKj3_EEEBa_() `rustc` normally emits traps for unreachable paths. However, under `CONFIG_RUST_INLINE_HELPERS=y`, `rustc` emits LLVM bitcode and Clang performs final code generation after the helper bitcode is linked, but Clang does not trap unreachable IR by default. In turn, this means `objtool` follows compiler-generated impossible Rust `enum` paths through alignment padding into the next function, resulting in fallthrough warnings. Thus pass the LLVM `trap-unreachable` option to the final Clang invocation and suppress traps immediately after `noreturn` calls, which `objtool` already recognizes as dead ends. The combination of both flags makes it match `rustc`'s behavior. Rust 1.85.0 (the minimum supported one) supports LLVM >= 18, and both flags are available in LLVM 18. Assisted-by: LLM Cc: Gary Guo <gary@garyguo.net> Cc: Boqun Feng <boqun@kernel.org> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Matthew Maurer <mmaurer@google.com> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@vger.kernel.org Fixes: 3a2486cc1da5 ("kbuild: rust: provide an option to inline C helpers into Rust") Acked-by: Gary Guo <gary@garyguo.net> Link: https://patch.msgid.link/20260816133233.197500-1-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
2026-08-23Merge tag 'mm-nonmm-stable-2026-08-22-16-57' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - "ocfs2/dlm: bound peer-controlled lengths in the o2dlm" (Bryam Vargas) Validate and bound all input lengths and count fields in the o2dlm migration and recovery receive handlers to prevent memory corruption and kernel panics from malformed cluster messages - "ocfs2: validate xattr entry bounds" (Cen Zhang) Validate OCFS2 extended attribute entry name and value bounds during metadata reads to prevent out-of-range memory accesses during retrieval or listing operations. - "taskstats: fix cgroupstats invalid fd handling and add selftests" (Yiyang Chen) Return -EBADF when cgroupstats receives an invalid file descriptor to prevent caller hangs and misleading success ACKs. Add a kselftest to validate valid cgroup v1 queries and verify proper error handling across different Netlink flag combinations. - "misc lib/raid/ improvements v2" (Christoph Hellwig) Improve benchmark-based algorithm selection for the XOR and RAID6 libraries, add KUnit benchmark tests, and cleanup minor implementation details. - "ocfs2: cluster: o2hb_region_pin() fixes" (Joseph Qi) Fix sleeping-in-atomic, lock order inversion and error-path cleanup bugs in o2hb_region_pin() by releasing o2hb_live_lock across sleeping configfs_depend_item() calls and using unlocked variants from callback context. Ensure failed pin attempts properly decrement user counts and unpin partially initialized heartbeat regions to prevent memory leaks and unprotected states. - "lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen()" (Vincent Mailhol) Fix an off-by-one which could cause an out-of-bounds read. - "ocfs2: harden heartbeat teardown races" (Cen Zhang) Fix two OCFS2 heartbeat/o2net teardown races found by KASAN. - "taskstats: tidy up the cpumask command path" *Bradley Morgan) make two small cleanups in kernel/taskstats.c. - "ocfs2: validate active orphan slots during inode read" (ZhengYuan Huang) Validate active ordinary and append-DIO orphan slots read from OCFS2 dinodes at the metadata boundary to prevent corrupted slot indices from causing out-of-bounds array accesses. - "ocfs2: bound-check both readdir re-validation scans" (Zhan Xusheng) Enforce strict boundary checks on directory entry record lengths and offset calculations during OCFS2 directory re-scans to prevent out-of-bounds memory reads and directory position corruption. * tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (95 commits) mailmap: fix bouncing address for Taniya Das ocfs2: bound-check dir entries in the inline-data re-validation scan ocfs2: bound-check dir entries in the readdir re-validation scan squashfs: avoid thundering-herd cache wakeups prctl: fix PR_SET_MM_AUXV losing the forced AT_NULL terminator mailmap: update email address for Linfeng Sun lib/interval_tree: fix allocation warning messages checkpatch: add NOKPROBE_SYMBOL to the whitelist of lines that can occur immediately after functions Squashfs: check block offset is not negative signal: factor out the kernel reserved si_code check ocfs2: fix readdir position truncation on 32-bit kernels ocfs2: fix cached cluster count after suballocator reclaim ocfs2: fix circular locking dependency in ocfs2_init_acl() ocfs2: validate DIO orphan slot during inode read ocfs2: validate orphan slot during inode read selftests/prctl: fix non-anonymous VMA mapping in set-anon-vma-name test MAINTAINERS: add IRC and patchwork for LTP include/linux/list.h: mark list_add and __list_add as __always_inline tools/mm: prevent page_owner_sort from truncating input hung_task: update DETECT_HUNG_TASK_BLOCKER Kconfig help ...