From: Josh Poimboeuf Date: Thu, 20 Nov 2025 20:52:17 +0000 (-0800) Subject: objtool: Don't alias undefined symbols X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=16f366c5a68839736d3616b466f1738811408ec7;p=thirdparty%2Fkernel%2Flinux.git objtool: Don't alias undefined symbols Objtool is mistakenly aliasing all undefined symbols. That's obviously wrong, though it has no consequence since objtool happens to only use sym->alias for defined symbols. Fix it regardless. Signed-off-by: Josh Poimboeuf Signed-off-by: Peter Zijlstra (Intel) Link: https://patch.msgid.link/bc401173a7717757eee672fc1ca5a20451d77b86.1763671318.git.jpoimboe@kernel.org --- diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c index fffca31d47ed2..4f15643ad70c8 100644 --- a/tools/objtool/elf.c +++ b/tools/objtool/elf.c @@ -492,8 +492,8 @@ static int elf_add_symbol(struct elf *elf, struct symbol *sym) sym->len = sym->sym.st_size; __sym_for_each(iter, &sym->sec->symbol_tree, sym->offset, sym->offset) { - if (iter->offset == sym->offset && iter->type == sym->type && - iter->len == sym->len) + if (!is_undef_sym(iter) && iter->offset == sym->offset && + iter->type == sym->type && iter->len == sym->len) iter->alias = sym; }