kernel/linux.git/include/linux/moduleparam.h, branch v7.0-rc7

Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-02-12T20:13:01+00:00

Pull non-MM updates from Andrew Morton: - "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves disk space by teaching ocfs2 to reclaim suballocator block group space (Heming Zhao) - "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the ARRAY_END() macro and uses it in various places (Alejandro Colomar) - "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the page size (Pnina Feder) - "kallsyms: Prevent invalid access when showing module buildid" cleans up kallsyms code related to module buildid and fixes an invalid access crash when printing backtraces (Petr Mladek) - "Address page fault in ima_restore_measurement_list()" fixes a kexec-related crash that can occur when booting the second-stage kernel on x86 (Harshit Mogalapalli) - "kho: ABI headers and Documentation updates" updates the kexec handover ABI documentation (Mike Rapoport) - "Align atomic storage" adds the __aligned attribute to atomic_t and atomic64_t definitions to get natural alignment of both types on csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain) - "kho: clean up page initialization logic" simplifies the page initialization logic in kho_restore_page() (Pratyush Yadav) - "Unload linux/kernel.h" moves several things out of kernel.h and into more appropriate places (Yury Norov) - "don't abuse task_struct.group_leader" removes the usage of ->group_leader when it is "obviously unnecessary" (Oleg Nesterov) - "list private v2 & luo flb" adds some infrastructure improvements to the live update orchestrator (Pasha Tatashin) * tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits) watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency procfs: fix missing RCU protection when reading real_parent in do_task_stat() watchdog/softlockup: fix sample ring index wrap in need_counting_irqs() kcsan, compiler_types: avoid duplicate type issues in BPF Type Format kho: fix doc for kho_restore_pages() tests/liveupdate: add in-kernel liveupdate test liveupdate: luo_flb: introduce File-Lifecycle-Bound global state liveupdate: luo_file: Use private list list: add kunit test for private list primitives list: add primitives for private list manipulations delayacct: fix uapi timespec64 definition panic: add panic_force_cpu= parameter to redirect panic to a specific CPU netclassid: use thread_group_leader(p) in update_classid_task() RDMA/umem: don't abuse current->group_leader drm/pan*: don't abuse current->group_leader drm/amd: kill the outdated "Only the pthreads threading model is supported" checks drm/amdgpu: don't abuse current->group_leader android/binder: use same_thread_group(proc->tsk, current) in binder_mmap() android/binder: don't abuse current->group_leader kho: skip memoryless NUMA nodes when reserving scratch areas ...

kernel.h: move VERIFY_OCTAL_PERMISSIONS() to sysfs.h

2026-02-01T00:16:05+00:00

The macro is related to sysfs, but is defined in kernel.h. Move it to the proper header, and unload the generic kernel.h. Now that the macro is removed from kernel.h, linux/moduleparam.h is decoupled, and kernel.h inclusion can be removed. Link: https://lkml.kernel.org/r/20260116042510.241009-4-ynorov@nvidia.com Signed-off-by: Yury Norov Acked-by: Randy Dunlap Tested-by: Randy Dunlap Reviewed-by: Andy Shevchenko Reviewed-by: Petr Pavlu Acked-by: Greg Kroah-Hartman Reviewed-by: Joel Fernandes Cc: Aaron Tomlin Cc: Andi Shyti Cc: Christophe Leroy (CS GROUP) Cc: Jani Nikula Cc: Steven Rostedt (Google) Signed-off-by: Andrew Morton

moduleparam: include required headers explicitly

2026-02-01T00:16:05+00:00

The following patch drops moduleparam.h dependency on kernel.h. In preparation to it, list all the required headers explicitly. Link: https://lkml.kernel.org/r/20260116042510.241009-3-ynorov@nvidia.com Signed-off-by: Yury Norov Suggested-by: Petr Pavlu Reviewed-by: Petr Pavlu Reviewed-by: Andy Shevchenko Reviewed-by: Joel Fernandes Cc: Aaron Tomlin Cc: Andi Shyti Cc: Christophe Leroy (CS GROUP) Cc: Greg Kroah-Hartman Cc: Jani Nikula Cc: Randy Dunlap Cc: Steven Rostedt (Google) Signed-off-by: Andrew Morton

modules: moduleparam.h: fix kernel-doc comments

2025-12-22T16:35:54+00:00

Fix kernel-doc comments to prevent kernel-doc warnings: Warning: include/linux/moduleparam.h:364 function parameter 'arg' not described in '__core_param_cb' Warning: include/linux/moduleparam.h:395 No description found for return value of 'parameq' Warning: include/linux/moduleparam.h:405 No description found for return value of 'parameqn' Signed-off-by: Randy Dunlap Reviewed-by: Petr Pavlu [Sami: Clarified the commit message] Signed-off-by: Sami Tolvanen

module: Add compile-time check for embedded NUL characters

2025-11-05T13:08:58+00:00

Long ago, the kernel module license checks were bypassed by embedding a NUL character in the MODULE_LICENSE() string[1]. By using a string like "GPL\0proprietary text", the kernel would only read "GPL" due to C string termination at the NUL byte, allowing proprietary modules to avoid kernel tainting and access GPL-only symbols. The MODULE_INFO() macro stores these strings in the .modinfo ELF section, and get_next_modinfo() uses strcmp()-family functions which stop at the first NUL. This split the embedded string into two separate .modinfo entries, with only the first part being processed by license_is_gpl_compatible(). Add a compile-time check using static_assert that compares the full string length (sizeof - 1) against __builtin_strlen(), which stops at the first NUL. If they differ, compilation fails with a clear error message. While this check can still be circumvented by modifying the ELF binary post-compilation, it prevents accidental embedded NULs and forces intentional abuse to require deliberate binary manipulation rather than simple source-level tricks. Build tested with test modules containing both valid and invalid license strings. The check correctly rejects: MODULE_LICENSE("GPL\0proprietary") while accepting normal declarations: MODULE_LICENSE("GPL") Link: https://lwn.net/Articles/82305/ [1] Suggested-by: Rusty Russell Signed-off-by: Kees Cook Reviewed-by: Daniel Gomez Reviewed-by: Aaron Tomlin Reviewed-by: Petr Pavlu Tested-by: Daniel Gomez Signed-off-by: Daniel Gomez

panic: add note that 'panic_print' parameter is deprecated

2025-09-14T00:32:50+00:00

Just like for 'panic_print's systcl interface, add similar note for setup of kernel cmdline parameter and parameter under /sys/module/kernel/. Also add __core_param_cb() macro, which enables to add special get/set operation for a kernel parameter. Link: https://lkml.kernel.org/r/20250825025701.81921-4-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang Suggested-by: Petr Mladek Reviewed-by: Petr Mladek Cc: Askar Safin Cc: John Ogness Cc: Jonathan Corbet Cc: Lance Yang Cc: "Paul E . McKenney" Cc: Steven Rostedt Signed-off-by: Andrew Morton

Merge tag 'kbuild-v6.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2025-08-06T04:32:52+00:00

Pull Kbuild updates from Masahiro Yamada: "This is the last pull request from me. I'm grateful to have been able to continue as a maintainer for eight years. From the next cycle, Nathan and Nicolas will maintain Kbuild. - Fix a shortcut key issue in menuconfig - Fix missing rebuild of kheaders - Sort the symbol dump generated by gendwarfsyms - Support zboot extraction in scripts/extract-vmlinux - Migrate gconfig to GTK 3 - Add TAR variable to allow overriding the default tar command - Hand over Kbuild maintainership" * tag 'kbuild-v6.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (92 commits) MAINTAINERS: hand over Kbuild maintenance kheaders: make it possible to override TAR kbuild: userprogs: use correct linker when mixing clang and GNU ld kconfig: lxdialog: replace strcpy() with strncpy() in inputbox.c kconfig: lxdialog: replace strcpy with snprintf in print_autowrap kconfig: gconf: refactor text_insert_help() kconfig: gconf: remove unneeded variable in text_insert_msg kconfig: gconf: use hyphens in signals kconfig: gconf: replace GtkImageMenuItem with GtkMenuItem kconfig: gconf: Fix Back button behavior kconfig: gconf: fix single view to display dependent symbols correctly scripts: add zboot support to extract-vmlinux gendwarfksyms: order -T symtypes output by name gendwarfksyms: use preferred form of sizeof for allocation kconfig: qconf: confine {begin,end}Group to constructor and destructor kconfig: qconf: fix ConfigList::updateListAllforAll() kconfig: add a function to dump all menu entries in a tree-like format kconfig: gconf: show GTK version in About dialog kconfig: gconf: replace GtkHPaned and GtkVPaned with GtkPaned kconfig: gconf: replace GdkColor with GdkRGBA ...

module: Rename MAX_PARAM_PREFIX_LEN to __MODULE_NAME_LEN

2025-07-31T11:57:47+00:00

The maximum module name length (MODULE_NAME_LEN) is somewhat confusingly defined in terms of the maximum parameter prefix length (MAX_PARAM_PREFIX_LEN), when in fact the dependency is in the opposite direction. This split originates from commit 730b69d22525 ("module: check kernel param length at compile time, not runtime"). The code needed to use MODULE_NAME_LEN in moduleparam.h, but because module.h requires moduleparam.h, this created a circular dependency. It was resolved by introducing MAX_PARAM_PREFIX_LEN in moduleparam.h and defining MODULE_NAME_LEN in module.h in terms of MAX_PARAM_PREFIX_LEN. Rename MAX_PARAM_PREFIX_LEN to __MODULE_NAME_LEN for clarity. This matches the similar approach of defining MODULE_INFO in module.h and __MODULE_INFO in moduleparam.h. Signed-off-by: Petr Pavlu Reviewed-by: Daniel Gomez Link: https://lore.kernel.org/r/20250630143535.267745-6-petr.pavlu@suse.com Signed-off-by: Daniel Gomez

module: Restore the moduleparam prefix length check

2025-07-31T11:57:41+00:00

The moduleparam code allows modules to provide their own definition of MODULE_PARAM_PREFIX, instead of using the default KBUILD_MODNAME ".". Commit 730b69d22525 ("module: check kernel param length at compile time, not runtime") added a check to ensure the prefix doesn't exceed MODULE_NAME_LEN, as this is what param_sysfs_builtin() expects. Later, commit 58f86cc89c33 ("VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms.") removed this check, but there is no indication this was intentional. Since the check is still useful for param_sysfs_builtin() to function properly, reintroduce it in __module_param_call(), but in a modernized form using static_assert(). While here, clean up the __module_param_call() comments. In particular, remove the comment "Default value instead of permissions?", which comes from commit 9774a1f54f17 ("[PATCH] Compile-time check re world-writeable module params"). This comment was related to the test variable __param_perm_check_##name, which was removed in the previously mentioned commit 58f86cc89c33. Fixes: 58f86cc89c33 ("VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms.") Signed-off-by: Petr Pavlu Reviewed-by: Daniel Gomez Link: https://lore.kernel.org/r/20250630143535.267745-4-petr.pavlu@suse.com Signed-off-by: Daniel Gomez

module: remove meaningless 'name' parameter from __MODULE_INFO()

2025-06-24T11:33:31+00:00

The symbol names in the .modinfo section are never used and already randomized by the __UNIQUE_ID() macro. Therefore, the second parameter of __MODULE_INFO() is meaningless and can be removed to simplify the code. With this change, the symbol names in the .modinfo section will be prefixed with __UNIQUE_ID_modinfo, making it clearer that they originate from MODULE_INFO(). [Before] $ objcopy -j .modinfo vmlinux.o modinfo.o $ nm -n modinfo.o | head -n10 0000000000000000 r __UNIQUE_ID_license560 0000000000000011 r __UNIQUE_ID_file559 0000000000000030 r __UNIQUE_ID_description558 0000000000000074 r __UNIQUE_ID_license580 000000000000008e r __UNIQUE_ID_file579 00000000000000bd r __UNIQUE_ID_description578 00000000000000e6 r __UNIQUE_ID_license581 00000000000000ff r __UNIQUE_ID_file580 0000000000000134 r __UNIQUE_ID_description579 0000000000000179 r __UNIQUE_ID_uncore_no_discover578 [After] $ objcopy -j .modinfo vmlinux.o modinfo.o $ nm -n modinfo.o | head -n10 0000000000000000 r __UNIQUE_ID_modinfo560 0000000000000011 r __UNIQUE_ID_modinfo559 0000000000000030 r __UNIQUE_ID_modinfo558 0000000000000074 r __UNIQUE_ID_modinfo580 000000000000008e r __UNIQUE_ID_modinfo579 00000000000000bd r __UNIQUE_ID_modinfo578 00000000000000e6 r __UNIQUE_ID_modinfo581 00000000000000ff r __UNIQUE_ID_modinfo580 0000000000000134 r __UNIQUE_ID_modinfo579 0000000000000179 r __UNIQUE_ID_modinfo578 Signed-off-by: Masahiro Yamada Reviewed-by: Petr Pavlu