linux-kernel - [tip: objtool/core] objtool: Skip non-canonical aliased symbols in add_jump_table

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Message-ID: <176371907682.498.10003398796469998322.tip-bot2@tip-bot2>
Date: Fri, 21 Nov 2025 09:57:56 -0000
From: "tip-bot2 for Josh Poimboeuf" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Josh Poimboeuf <jpoimboe@...nel.org>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: objtool/core] objtool: Skip non-canonical aliased symbols in
 add_jump_table_alts()

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

Commit-ID:     a91a61b290430ba0dd2c42378f744d6b21657f42
Gitweb:        https://git.kernel.org/tip/a91a61b290430ba0dd2c42378f744d6b21657f42
Author:        Josh Poimboeuf <jpoimboe@...nel.org>
AuthorDate:    Thu, 20 Nov 2025 12:52:19 -08:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Fri, 21 Nov 2025 10:04:08 +01:00

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>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://patch.msgid.link/169aa17564b9aadb74897945ea74ac2eb70c5b13.1763671318.git.jpoimboe@kernel.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 72c7f6f..6a4a29f 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);