diff options
| author | Masahiro Yamada <masahiroy@kernel.org> | 2022-05-01 11:40:18 +0300 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2022-05-07 21:17:01 +0300 |
| commit | e76cc48d8e6df5d949284132981db73d2dd8c6b5 (patch) | |
| tree | ed301148e5ef73e945734f37aa5082da06fc18c7 /scripts/mod | |
| parent | b8422711080f57cdf9fb1c0cb8683a2112bed27c (diff) | |
| download | linux-e76cc48d8e6df5d949284132981db73d2dd8c6b5.tar.xz | |
modpost: make sym_add_exported() always allocate a new symbol
Currently, sym_add_exported() does not allocate a symbol if the same
name symbol already exists in the hash table.
This does not reflect the real use cases. You can let an external
module override the in-tree one. In this case, the external module
will export the same name symbols as the in-tree one. However,
modpost simply ignores those symbols, then Module.symvers for the
external module loses its symbols.
sym_add_exported() should allocate a new symbol.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Diffstat (limited to 'scripts/mod')
| -rw-r--r-- | scripts/mod/modpost.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 841f69475247..6024c668a07c 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -412,19 +412,17 @@ static struct symbol *sym_add_exported(const char *name, struct module *mod, { struct symbol *s = find_symbol(name); - if (!s) { - s = new_symbol(name, mod, export); - list_add_tail(&s->list, &mod->exported_symbols); - } else if (!external_module || s->module->is_vmlinux || - s->module == mod) { + if (s && (!external_module || s->module->is_vmlinux || s->module == mod)) { error("%s: '%s' exported twice. Previous export was in %s%s\n", mod->name, name, s->module->name, s->module->is_vmlinux ? "" : ".ko"); - return s; } + s = new_symbol(name, mod, export); s->module = mod; s->export = export; + list_add_tail(&s->list, &mod->exported_symbols); + return s; } |