[tip: objtool/core] objtool/klp: Don't correlate __ADDRESSABLE() symbols

[tip-bot2 for Josh Poimboeuf]

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     8edec016255dcc74146b0486639f756f0ce75bf5
Gitweb:        https://git.kernel.org/tip/8edec016255dcc74146b0486639f756f0ce75bf5
Author:        Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
AuthorDate:    Sat, 11 Apr 2026 12:23:07 -07:00
Committer:     Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
CommitterDate: Mon, 04 May 2026 21:15:59 -07:00

objtool/klp: Don't correlate __ADDRESSABLE() symbols

Symbols created by __ADDRESSABLE() are only used to convince the
toolchain not to optimize out the referenced symbol.

Reviewed-by: Miroslav Benes <mbenes@xxxxxxx>
Acked-by: Song Liu <song@xxxxxxxxxx>
Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
---
 tools/objtool/klp-diff.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/objtool/klp-diff.c b/tools/objtool/klp-diff.c
index cb26c1c..36753ee 100644
--- a/tools/objtool/klp-diff.c
+++ b/tools/objtool/klp-diff.c
@@ -353,6 +353,15 @@ static bool is_special_section_aux(struct section *sec)
 }
 
 /*
+ * Symbols created by ___ADDRESSABLE() are only used to convince the toolchain
+ * not to optimize out the referenced symbol.
+ */
+static bool is_addressable_sym(struct symbol *sym)
+{
+	return !strcmp(sym->sec->name, ".discard.addressable");
+}
+
+/*
  * These symbols should never be correlated, so their local patched versions
  * are used instead of linking to the originals.
  */
@@ -365,6 +374,7 @@ static bool dont_correlate(struct symbol *sym)
 	       is_uncorrelated_static_local(sym) ||
 	       is_clang_tmp_label(sym) ||
 	       is_string_sec(sym->sec) ||
+	       is_addressable_sym(sym) ||
 	       is_special_section(sym->sec) ||
 	       is_special_section_aux(sym->sec) ||
 	       strstarts(sym->name, "__initcall__");