From: Josh Poimboeuf <jpoimboe@kernel.org>
Date: Fri, 10 Apr 2026 03:50:35 +0000 (-0700)
Subject: objtool/klp: Handle Clang .data..Lanon anonymous data sections
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff0cf5efef40e3b60e7bb27a6072f9a0c6e4c5ce;p=thirdparty%2Flinux.git

objtool/klp: Handle Clang .data..Lanon anonymous data sections

Clang generates anonymous data sections named .data..Lanon.<hash>.
These need section-symbol references in the same way as .data..Lubsan
(GCC) and .data..L__unnamed_ (Clang UBSAN) sections.  Without this,
convert_reloc_sym() fails when processing relocations that reference
these sections.

Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---

diff --git a/tools/objtool/klp-diff.c b/tools/objtool/klp-diff.c
index 463b6daa52341..7e58ef36f805b 100644
--- a/tools/objtool/klp-diff.c
+++ b/tools/objtool/klp-diff.c
@@ -1030,14 +1030,15 @@ found_sym:
 }
 
 /*
- * Sections with anonymous or uncorrelated data (strings, UBSAN data)
- * need section symbol references.
+ * Sections with anonymous or uncorrelated data (strings, UBSAN data, Clang
+ * anonymous constants) need section symbol references.
  */
 static bool is_uncorrelated_section(struct section *sec)
 {
 	return is_string_sec(sec) ||
 	       strstarts(sec->name, ".data..Lubsan") ||		/* GCC */
-	       strstarts(sec->name, ".data..L__unnamed_");	/* Clang */
+	       strstarts(sec->name, ".data..L__unnamed_") ||	/* Clang */
+	       strstarts(sec->name, ".data..Lanon.");		/* Clang */
 }
 
 /*