diff --git a/kpatch-build/lookup.c b/kpatch-build/lookup.c index 2ccc181..bd2b732 100644 --- a/kpatch-build/lookup.c +++ b/kpatch-build/lookup.c @@ -165,6 +165,25 @@ static bool locals_match(struct lookup_table *table, int idx, return true; } +static bool file_has_locals(struct symbol *file_sym, struct list_head *sym_list) +{ + struct symbol *sym = file_sym; + + list_for_each_entry_continue(sym, sym_list, list) { + if (sym->type == STT_FILE) + break; + if (sym->type != STB_LOCAL) + continue; + if (maybe_discarded_sym(sym->name)) + continue; + + if (sym->type == STT_FUNC || sym->type == STT_OBJECT) + return true; + } + + return false; +} + static void find_local_syms(struct lookup_table *table, struct symbol *file_sym, struct list_head *sym_list) { @@ -184,6 +203,14 @@ static void find_local_syms(struct lookup_table *table, struct symbol *file_sym, file_sym->name, table->objname); lookup_table_file_sym = sym; + + if (!file_has_locals(file_sym, sym_list)) { + /* + * If the file doesn't have local symbols, any empty + * match will do. Skip the duplicate check. + */ + break; + } } if (!lookup_table_file_sym)