objtool · Supported

Maintainers

• M Josh Poimboeuf <jpoimboe@kernel.org>
• M Peter Zijlstra <peterz@infradead.org>

Paths

• F include/linux/objtool*.h
• F tools/objtool/

Last 30 days

Active reviewers (last 30 days)

• Song Liu <song@kernel.org>
  67 attestations (67 Acked-by) · last on 2026-05-13
• Miroslav Benes <mbenes@suse.cz>
  33 attestations (33 Reviewed-by) · last on 2026-05-05
• Peter Zijlstra (Intel) <peterz@infradead.org>
  12 attestations (10 Acked-by, 2 Suggested-by) · last on 2026-05-05
• Josh Poimboeuf <jpoimboe@kernel.org>
  2 attestations (2 Acked-by) · last on 2026-05-05
• Nicholas Piggin <npiggin@gmail.com>
  1 attestation (1 Co-developed-by) · last on 2026-05-05

Recent patches

Most-recent 30 patches in this subsystem on lkml (capped at 30), ordered by date desc.

• [PATCH v3 19/21] objtool/klp: Introduce objtool for arm64
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 18/21] objtool/klp: Clone inline alternative replacements
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 17/21] objtool/klp: Don't correlate arm64 mapping symbols
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 16/21] objtool/klp: Filter arm64 mapping symbols in find_symbol_by_offset()
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 14/21] objtool: Prevent kCFI hashes from being decoded as instructions
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 15/21] objtool/klp: Add arm64 support for prefix/PFE detection
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 12/21] objtool: Refactor elf_add_data() to use a growable data buffer
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 13/21] objtool: Reuse string references
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 11/21] objtool: Allow empty alternatives
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 10/21] objtool: Ignore jumps to the end of the function for checksum runs
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 08/21] objtool: Allow setting --mnop without --mcount
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [PATCH v3 06/21] arm64: Annotate special section entries
  2026-05-13 · Josh Poimboeuf <jpoimboe@kernel.org>
• [tip: objtool/core] objtool/klp: Fix is_uncorrelated_static_local() for Clang
  2026-05-05 · tip-bot2 for Joe Lawrence <hidden>
• [tip: objtool/core] objtool/klp: Fix .data..once static local non-correlation
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Don't correlate __ADDRESSABLE() symbols
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Don't correlate absolute symbols
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Don't correlate __initstub__ symbols
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Don't report uncorrelated functions as new
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Improve local label check
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Fix create_fake_symbols() skipping entsize-based sections
  2026-05-05 · tip-bot2 for Joe Lawrence <hidden>
• [tip: objtool/core] objtool: Replace iterator callback with for_each_sym_by_mangled_name()
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Fix --debug-checksum for duplicate symbol names
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Fix handling of zero-length .altinstr_replacement sections
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Fix cloning of zero-length section symbols
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Fix XXH3 state memory leak
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Fix extraction of text annotations for alternatives
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Fix kCFI trap handling
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Fix relocation conversion failures for R_X86_64_NONE
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool: Move mark_rodata() to elf.c
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>
• [tip: objtool/core] objtool/klp: Simplify reloc symbol conversion
  2026-05-05 · tip-bot2 for Josh Poimboeuf <hidden>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• [tip: objtool/core] objtool: Set minimum xxhash version to 0.8
  2025-11-18 · tip-bot2 for Josh Poimboeuf <hidden> · 1 Reviewed-by, 1 Tested-by
• [tip: objtool/core] objtool: Support Clang AUTOFDO .cold functions
  2025-11-21 · tip-bot2 for Josh Poimboeuf <hidden> · 1 Reviewed-by, 1 Tested-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• Re: Linux 6.12.56
  2025-10-29 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• Re: Linux 6.17.6
  2025-10-29 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• [tip: objtool/core] objtool: Remove unneeded semicolon
  2025-10-31 · tip-bot2 for Chen Ni <hidden>
• [tip: objtool/core] x86/smpboot: Mark native_play_dead() as __noreturn
  2025-10-31 · tip-bot2 for Thorsten Blum <hidden>
• [PATCH v3 02/28] objtool: Create disassembly context
  2025-11-12 · Alexandre Chartre <hidden>
• [PATCH v3 01/28] objtool: Move disassembly functions to a separated file
  2025-11-12 · Alexandre Chartre <hidden>
• [PATCH v3 03/28] objtool: Disassemble code with libopcodes instead of running objdump
  2025-11-12 · Alexandre Chartre <hidden>
• [PATCH v3 05/28] objtool: Print symbol during disassembly
  2025-11-12 · Alexandre Chartre <hidden>
• [PATCH v3 06/28] objtool: Store instruction disassembly result
  2025-11-12 · Alexandre Chartre <hidden>
• [PATCH v3 09/28] objtool: Record symbol name max length
  2025-11-12 · Alexandre Chartre <hidden>