[PATCH v2 0/7] objtool/klp: sympos/module/alternative/etc fixes

From: Josh Poimboeuf

Date: Wed Aug 05 2026 - 10:37:09 EST


v2:
- rebased on tip/master (first 6 patches were merged)
- dropped original patches 7-8 (will post followup)
- added .klp.symid fix

v1: https://lore.kernel.org/cover.1785727106.git.jpoimboe@xxxxxxxxxx

This consolidates fixes for the klp-build issues reported by Joe over
the last several weeks, plus some more things I found while
testing/reviewing.

Fun stuff like symbol resolution, module dependencies, alternatives.

Joe Lawrence (1):
objtool/klp: Allow new references to module exports

Josh Poimboeuf (6):
objtool/klp: Fix vmlinux .klp.symid link error for .no_trim_symbol
symbols
objtool/klp: Fix size of empty special section entries
objtool/klp: Ignore replacement offset of empty x86 alternatives
objtool/klp: Explicitly disallow patching or referencing init
code/data
objtool/klp: Fix cross-module klp relocation section naming
objtool/klp: Don't match local symbols against exports

tools/objtool/arch/x86/special.c | 27 ++++++++++
tools/objtool/include/objtool/klp.h | 10 ++--
tools/objtool/include/objtool/special.h | 7 +++
tools/objtool/klp-diff.c | 65 ++++++++++++++++++++++---
tools/objtool/klp-post-link.c | 53 +++++++++++---------
tools/objtool/klp-symid.c | 1 +
tools/objtool/klp-sympos.c | 10 ++++
7 files changed, 141 insertions(+), 32 deletions(-)

--
2.54.0