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

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 72c7f6f..6a4a29f 100644 (file)
--- 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);