linux/scripts, branch master

kbuild: install-extmod-build: Package resolve_btfids if necessary

2026-02-26T21:49:34Z

When CONFIG_DEBUG_INFO_BTF_MODULES is enabled and vmlinux is available, Makefile.modfinal and gen-btf.sh will try to use resolve_btfids on the module .ko. install-extmod-build currently does not package resolve_btfids, so that step fails. Package resolve_btfids if it may be used. Signed-off-by: Thomas Weißschuh Reviewed-by: Nicolas Schier Link: https://patch.msgid.link/20260226-kbuild-resolve_btfids-v1-1-2bf38b93dfe7@linutronix.de [nathan: Small commit message tweaks] Signed-off-by: Nathan Chancellor

genksyms: Fix parsing a declarator with a preceding attribute

2026-02-26T18:53:05Z

After commit 07919126ecfc ("netfilter: annotate NAT helper hook pointers with __rcu"), genksyms fails to parse the __rcu annotation when building with CONFIG_DEBUG_INFO_BTF=y, CONFIG_PAHOLE_HAS_BTF_TAG=y, and a version of clang that supports btf_type_tag. $ clang --version | head -1 ClangBuiltLinux clang version 22.1.0 (https://github.com/llvm/llvm-project.git 4434dabb69916856b824f68a64b029c67175e532) $ cat kernel/configs/repro.config CONFIG_BPF_SYSCALL=y CONFIG_MODVERSIONS=y # CONFIG_DEBUG_INFO_NONE is not set CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y CONFIG_DEBUG_INFO_BTF=y $ make -skj"$(nproc)" ARCH=x86_64 LLVM=1 mrproper defconfig repro.config all WARNING: modpost: EXPORT symbol "nf_nat_ftp_hook" [vmlinux] version generation failed, symbol will not be versioned. ... WARNING: modpost: EXPORT symbol "nf_nat_irc_hook" [vmlinux] version generation failed, symbol will not be versioned. ... genksyms falls over parsing the __rcu attribute in the declarator: # Kernel reproducer $ make -skj"$(nproc)" ARCH=x86_64 KCFLAGS=-D__GENKSYMS__ LLVM=1 net/netfilter/nf_conntrack_ftp.i $ scripts/genksyms/genksyms -w :2: syntax error Optionally allow an attribute to precede a declarator to resolve this error and properly generate symbol versions. Fixes: 07919126ecfc ("netfilter: annotate NAT helper hook pointers with __rcu") Link: https://patch.msgid.link/20260225-genksyms-fix-attribute-declarator-v1-1-1b21478663fb@kernel.org Tested-by: Nicolas Schier Reviewed-by: Nicolas Schier Signed-off-by: Nathan Chancellor

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51Z

This was done entirely with mindless brute force, using git grep -l '\

Merge tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2026-02-21T19:02:58Z

Pull kmalloc_obj conversion from Kees Cook: "This does the tree-wide conversion to kmalloc_obj() and friends using coccinelle, with a subsequent small manual cleanup of whitespace alignment that coccinelle does not handle. This uncovered a clang bug in __builtin_counted_by_ref(), so the conversion is preceded by disabling that for current versions of clang. The imminent clang 22.1 release has the fix. I've done allmodconfig build tests for x86_64, arm64, i386, and arm. I did defconfig builds for alpha, m68k, mips, parisc, powerpc, riscv, s390, sparc, sh, arc, csky, xtensa, hexagon, and openrisc" * tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: kmalloc_obj: Clean up after treewide replacements treewide: Replace kmalloc with kmalloc_obj for non-scalar types compiler_types: Disable __builtin_counted_by_ref for Clang

scripts: coccicheck: warn on unset debug file

2026-02-21T16:22:30Z

coccicheck prints debug logs to stdout unless a debug file has been set. This makes it hard to read coccinelle's suggested changes, especially for someone new to coccicheck. From this commit, we warn about this behaviour from within the script on an unset debug file. Explicitly setting the debug file to /dev/null suppresses the warning while keeping the default. Signed-off-by: Benjamin Philip Signed-off-by: Julia Lawall

scripts: coccicheck: simplify debug file handling

2026-02-21T16:22:00Z

This commit separates handling unset files and pre-existing files. It also eliminates a duplicated check for unset files in run_cmd_parmap(). Signed-off-by: Benjamin Philip Signed-off-by: Julia Lawall

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

Merge tag 'mm-nonmm-stable-2026-02-18-19-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-02-19T05:40:16Z

Pull more non-MM updates from Andrew Morton: - "two fixes in kho_populate()" fixes a couple of not-major issues in the kexec handover code (Ran Xiaokai) - misc singletons * tag 'mm-nonmm-stable-2026-02-18-19-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: lib/group_cpus: handle const qualifier from clusters allocation type kho: remove unnecessary WARN_ON(err) in kho_populate() kho: fix missing early_memunmap() call in kho_populate() scripts/gdb: implement x86_page_ops in mm.py objpool: fix the overestimation of object pooling metadata size selftests/memfd: use IPC semaphore instead of SIGSTOP/SIGCONT delayacct: fix build regression on accounting tool

Merge tag 'kbuild-fixes-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

2026-02-18T22:59:55Z

Pull Kbuild fixes from Nathan Chancellor: - Ensure tools/objtool is cleaned by 'make clean' and 'make mrproper' - Fix test program for CONFIG_CC_CAN_LINK to avoid a warning, which is made fatal by -Werror - Drop explicit LZMA parallel compression in scripts/make_fit.py - Several fixes for commit 62089b804895 ("kbuild: rpm-pkg: Generate debuginfo package manually") * tag 'kbuild-fixes-7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: kbuild: rpm-pkg: Disable automatic requires for manual debuginfo package kbuild: rpm-pkg: Fix manual debuginfo generation when using .src.rpm kernel: rpm-pkg: Restore find-debuginfo.sh approach to -debuginfo package kbuild: rpm-pkg: Restrict manual debug package creation scripts/make_fit.py: Drop explicit LZMA parallel compression kbuild: Fix CC_CAN_LINK detection kbuild: Add objtool to top-level clean target

kbuild: rpm-pkg: Disable automatic requires for manual debuginfo package

2026-02-16T23:32:46Z

Stefano reports that after commit 62089b804895 ("kbuild: rpm-pkg: Generate debuginfo package manually"), building with an rpm package using rpm 4.20.0 fails with: RPM build errors: Dependency tokens must begin with alpha-numeric, '_' or '/': #�) = 0x0d000002 Dependency tokens must begin with alpha-numeric, '_' or '/': �) = 0x0d000000 Dependency tokens must begin with alpha-numeric, '_' or '/': ) = 0x7c0e000000 Unknown rich dependency op 'Hat': (Red Hat 15.2.1-7)) = 0x3130363230322000 Unknown rich dependency op 'Hat': (Red Hat 15.2.1-7)) = 0x4728203a43434800 Unknown rich dependency op 'Hat': (Red Hat 15.2.1-7)) = 0x3130363230322000 Unknown rich dependency op 'Hat': (Red Hat 15.2.1-7)) = 0x4728203a43434800 This error comes from the automatic requirements feature of rpm. The -debuginfo subpackage has no dependencies, so disable this feature with 'AutoReq: 0' for this subpackage, avoiding the error. This matches the official %_debug_template macro that rpm provides. While automatic provides should be default enabled, be explicit like %_debug_template does. Additionally, while in the area, add the manual debug information package to the Development/Debug group, further aligning with %_debug_template. Cc: stable@vger.kernel.org Fixes: 62089b804895 ("kbuild: rpm-pkg: Generate debuginfo package manually") Reported-by: Stefano Garzarella Closes: https://lore.kernel.org/CAGxU2F7FFNgb781_A7a1oL63n9Oy8wsyWceKhUpeZ6mLk=focw@mail.gmail.com/ Tested-by: Stefano Garzarella Link: https://patch.msgid.link/20260216-improve-manual-debuginfo-template-v1-1-e584b3f8d3be@kernel.org Signed-off-by: Nathan Chancellor