Merge tag 'objtool-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Ingo Molnar:

 - Add unit test suite for objtool klp functionality and
   known failure modes (by Song Liu and Puranjay Mohan,
   with fixes by Joe Lawrence)

* tag 'objtool-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (58 commits)
  objtool/klp: Add test for ThinLTO symbols sharing a demangled name
  objtool/klp: Add test for Clang switch jump tables
  objtool/klp: Add test for UBSAN metadata in an unchanged function
  objtool/klp: Add test for absolute and __ADDRESSABLE symbols
  objtool/klp: Add test for a patch which strips a data annotation
  objtool/klp: Add test for the alignment of cloned data sections
  objtool/klp: Add test for alternative replacement code in checksums
  objtool/klp: Add test for instruction operand checksums
  objtool/klp: Add test for a static call introduced by the patch
  objtool/klp: Add test for tracepoint and pr_debug static branch keys
  objtool/klp: Add test for a static branch introduced by the patch
  objtool/klp: Add test for symbols with no checksum entry of their own
  objtool/klp: Add test for data object checksums
  objtool/klp: Test text annotations on alternative replacements
  objtool/klp: Test a hand-built livepatch module's static call keys
  objtool/klp: Test rejection of a file-local static branch key
  objtool/klp: Add test for symbols whose linkage the patch changes
  objtool/klp: Add test for kCFI prefix symbols and traps
  objtool/klp: Add test for __bug_table, __ex_table and __mcount_loc extraction
  objtool/klp: Add test for static locals which must not be correlated
  ...

1 files changed, 39 insertions, 0 deletions

diff --git a/tools/objtool/tests/generic/fixtures/thinlto_local.c b/tools/objtool/tests/generic/fixtures/thinlto_local.c
new file mode 100644
index 000000000000..fe9f9e6bf44f
--- /dev/null
+++ b/tools/objtool/tests/generic/fixtures/thinlto_local.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Two translation units (TU_B selects the second) linked with ThinLTO.
+ * Importing bump() promotes the file-local counter, renaming it
+ * counter.llvm.<hash>.  The hash is content derived, so it differs between the
+ * original and patched builds.
+ */
+
+#ifdef TU_B
+
+extern int bump(void);
+
+int other_entry(void)
+{
+	return bump() + bump();
+}
+
+#else
+
+static const char __modinfo[]
+	__attribute__((section(".modinfo"), used, aligned(1))) = "\0name=vmlinux";
+
+static int counter;
+
+int bump(void)
+{
+	return ++counter;
+}
+
+int target(void)
+{
+#ifdef PATCHED
+	return counter + 1;
+#else
+	return counter;
+#endif
+}
+
+#endif