linux-kernel - [PATCH 5/6] objtool: Skip non-canonical aliased symbols in add_jump_table

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Message-ID: <169aa17564b9aadb74897945ea74ac2eb70c5b13.1763671318.git.jpoimboe@kernel.org>
Date: Thu, 20 Nov 2025 12:52:19 -0800
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: x86@...nel.org
Cc: linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Rong Xu <xur@...gle.com>,
	Han Shen <shenhan@...gle.com>,
	Sriraman Tallam <tmsriram@...gle.com>,
	Krzysztof Pszeniczny <kpszeniczny@...gle.com>
Subject: [PATCH 5/6] objtool: Skip non-canonical aliased symbols in add_jump_table_alts()

If a symbol has aliases, make add_jump_table_alts() skip the
non-canonical ones to avoid any surprises.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
 tools/objtool/check.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 72c7f6f03350..6a4a29f8f2f5 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2197,7 +2197,7 @@ static int add_jump_table_alts(struct objtool_file *file)
 		return 0;
 
 	for_each_sym(file->elf, func) {
-		if (!is_func_sym(func))
+		if (!is_func_sym(func) || func->alias != func)
 			continue;
 
 		mark_func_jump_tables(file, func);
-- 
2.51.1