From 4f908bb8f43fea169650da8a4ca8fcbd782b2ba0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= Date: Sat, 7 Mar 2026 18:42:06 +0100 Subject: [PATCH] fix(napi): export uv_ref and uv_unref symbols Native addons that call `uv_ref`/`uv_unref` (e.g. zeromq) crash with a null pointer dereference because Deno didn't export these symbols. The addon resolves them via `dlsym` at runtime, gets NULL, and segfaults when calling. Add no-op stubs for `uv_ref` and `uv_unref` and export them in the symbol lists. These are no-ops because Deno's NAPI uv polyfill doesn't track handle ref counts. Note: zeromq also needs additional uv functions (uv_poll_*, uv_timer_*, uv_idle_*, etc.) to fully work. There is a more complete uv compat layer in libs/core/uv_compat.rs that could potentially be integrated. Ref #18345 Co-Authored-By: Claude Opus 4.6 --- ext/napi/generated_symbol_exports_list_linux.def | 2 +- ext/napi/generated_symbol_exports_list_macos.def | 4 +++- ext/napi/generated_symbol_exports_list_windows.def | 4 +++- ext/napi/sym/symbol_exports.json | 4 +++- ext/napi/uv.rs | 9 +++++++++ 5 files changed, 19 insertions(+), 4 deletions(-) diff --git a/ext/napi/generated_symbol_exports_list_linux.def b/ext/napi/generated_symbol_exports_list_linux.def index 614880ebfa9da6..1ffef387d7bc34 100644 --- a/ext/napi/generated_symbol_exports_list_linux.def +++ b/ext/napi/generated_symbol_exports_list_linux.def @@ -1 +1 @@ -{ "node_api_create_syntax_error"; "napi_make_callback"; "napi_has_named_property"; "napi_async_destroy"; "napi_coerce_to_object"; "napi_get_arraybuffer_info"; "napi_detach_arraybuffer"; "napi_get_undefined"; "napi_reference_unref"; "napi_fatal_error"; "napi_open_callback_scope"; "napi_close_callback_scope"; "napi_get_value_uint32"; "napi_create_function"; "napi_create_arraybuffer"; "napi_get_value_int64"; "napi_get_all_property_names"; "napi_resolve_deferred"; "napi_is_detached_arraybuffer"; "napi_create_string_utf8"; "napi_create_threadsafe_function"; "node_api_throw_syntax_error"; "napi_create_bigint_int64"; "napi_wrap"; "napi_set_property"; "napi_get_value_bigint_int64"; "napi_open_handle_scope"; "napi_create_error"; "napi_create_buffer"; "napi_cancel_async_work"; "napi_is_exception_pending"; "napi_acquire_threadsafe_function"; "napi_create_external"; "napi_get_threadsafe_function_context"; "napi_get_null"; "napi_create_string_utf16"; "node_api_create_external_string_utf16"; "napi_get_value_bigint_uint64"; "napi_module_register"; "napi_is_typedarray"; "napi_create_external_buffer"; "napi_get_new_target"; "napi_get_instance_data"; "napi_close_handle_scope"; "napi_get_value_string_utf16"; "napi_get_property_names"; "napi_is_arraybuffer"; "napi_get_cb_info"; "napi_define_properties"; "napi_add_env_cleanup_hook"; "node_api_get_module_file_name"; "napi_get_node_version"; "napi_create_int64"; "napi_create_double"; "napi_get_and_clear_last_exception"; "napi_create_reference"; "napi_get_typedarray_info"; "napi_call_threadsafe_function"; "napi_get_last_error_info"; "napi_create_array_with_length"; "napi_coerce_to_number"; "napi_get_global"; "napi_is_error"; "napi_set_instance_data"; "napi_create_typedarray"; "napi_throw_type_error"; "napi_has_property"; "napi_get_value_external"; "napi_create_range_error"; "napi_typeof"; "napi_ref_threadsafe_function"; "napi_create_bigint_uint64"; "napi_get_prototype"; "napi_adjust_external_memory"; "napi_release_threadsafe_function"; "napi_delete_async_work"; "napi_create_string_latin1"; "node_api_create_external_string_latin1"; "napi_is_array"; "napi_unref_threadsafe_function"; "napi_throw_error"; "napi_has_own_property"; "napi_get_reference_value"; "napi_remove_env_cleanup_hook"; "napi_get_value_string_utf8"; "napi_is_promise"; "napi_get_boolean"; "napi_run_script"; "napi_get_element"; "napi_get_named_property"; "napi_get_buffer_info"; "napi_get_value_bool"; "napi_reference_ref"; "napi_create_object"; "napi_create_promise"; "napi_create_int32"; "napi_escape_handle"; "napi_open_escapable_handle_scope"; "napi_throw"; "napi_get_value_double"; "napi_set_named_property"; "napi_call_function"; "napi_create_date"; "napi_object_freeze"; "napi_get_uv_event_loop"; "napi_get_value_string_latin1"; "napi_reject_deferred"; "napi_add_finalizer"; "napi_create_array"; "napi_delete_reference"; "napi_get_date_value"; "napi_create_dataview"; "napi_get_version"; "napi_define_class"; "napi_is_date"; "napi_remove_wrap"; "napi_delete_property"; "napi_instanceof"; "napi_create_buffer_copy"; "napi_delete_element"; "napi_object_seal"; "napi_queue_async_work"; "napi_get_value_bigint_words"; "napi_is_buffer"; "napi_get_array_length"; "napi_get_property"; "napi_new_instance"; "napi_set_element"; "napi_create_bigint_words"; "napi_strict_equals"; "napi_is_dataview"; "napi_close_escapable_handle_scope"; "napi_get_dataview_info"; "napi_get_value_int32"; "napi_unwrap"; "napi_throw_range_error"; "napi_coerce_to_bool"; "napi_create_uint32"; "napi_has_element"; "napi_create_external_arraybuffer"; "napi_create_symbol"; "node_api_symbol_for"; "napi_coerce_to_string"; "napi_create_type_error"; "napi_fatal_exception"; "napi_create_async_work"; "napi_async_init"; "node_api_create_property_key_utf16"; "napi_type_tag_object"; "napi_check_object_type_tag"; "node_api_post_finalizer"; "napi_add_async_cleanup_hook"; "napi_remove_async_cleanup_hook"; "uv_mutex_init"; "uv_mutex_lock"; "uv_mutex_unlock"; "uv_mutex_destroy"; "uv_async_init"; "uv_async_send"; "uv_close"; }; \ No newline at end of file +{ "node_api_create_syntax_error"; "napi_make_callback"; "napi_has_named_property"; "napi_async_destroy"; "napi_coerce_to_object"; "napi_get_arraybuffer_info"; "napi_detach_arraybuffer"; "napi_get_undefined"; "napi_reference_unref"; "napi_fatal_error"; "napi_open_callback_scope"; "napi_close_callback_scope"; "napi_get_value_uint32"; "napi_create_function"; "napi_create_arraybuffer"; "napi_get_value_int64"; "napi_get_all_property_names"; "napi_resolve_deferred"; "napi_is_detached_arraybuffer"; "napi_create_string_utf8"; "napi_create_threadsafe_function"; "node_api_throw_syntax_error"; "napi_create_bigint_int64"; "napi_wrap"; "napi_set_property"; "napi_get_value_bigint_int64"; "napi_open_handle_scope"; "napi_create_error"; "napi_create_buffer"; "napi_cancel_async_work"; "napi_is_exception_pending"; "napi_acquire_threadsafe_function"; "napi_create_external"; "napi_get_threadsafe_function_context"; "napi_get_null"; "napi_create_string_utf16"; "node_api_create_external_string_utf16"; "napi_get_value_bigint_uint64"; "napi_module_register"; "napi_is_typedarray"; "napi_create_external_buffer"; "napi_get_new_target"; "napi_get_instance_data"; "napi_close_handle_scope"; "napi_get_value_string_utf16"; "napi_get_property_names"; "napi_is_arraybuffer"; "napi_get_cb_info"; "napi_define_properties"; "napi_add_env_cleanup_hook"; "node_api_get_module_file_name"; "napi_get_node_version"; "napi_create_int64"; "napi_create_double"; "napi_get_and_clear_last_exception"; "napi_create_reference"; "napi_get_typedarray_info"; "napi_call_threadsafe_function"; "napi_get_last_error_info"; "napi_create_array_with_length"; "napi_coerce_to_number"; "napi_get_global"; "napi_is_error"; "napi_set_instance_data"; "napi_create_typedarray"; "napi_throw_type_error"; "napi_has_property"; "napi_get_value_external"; "napi_create_range_error"; "napi_typeof"; "napi_ref_threadsafe_function"; "napi_create_bigint_uint64"; "napi_get_prototype"; "napi_adjust_external_memory"; "napi_release_threadsafe_function"; "napi_delete_async_work"; "napi_create_string_latin1"; "node_api_create_external_string_latin1"; "napi_is_array"; "napi_unref_threadsafe_function"; "napi_throw_error"; "napi_has_own_property"; "napi_get_reference_value"; "napi_remove_env_cleanup_hook"; "napi_get_value_string_utf8"; "napi_is_promise"; "napi_get_boolean"; "napi_run_script"; "napi_get_element"; "napi_get_named_property"; "napi_get_buffer_info"; "napi_get_value_bool"; "napi_reference_ref"; "napi_create_object"; "napi_create_promise"; "napi_create_int32"; "napi_escape_handle"; "napi_open_escapable_handle_scope"; "napi_throw"; "napi_get_value_double"; "napi_set_named_property"; "napi_call_function"; "napi_create_date"; "napi_object_freeze"; "napi_get_uv_event_loop"; "napi_get_value_string_latin1"; "napi_reject_deferred"; "napi_add_finalizer"; "napi_create_array"; "napi_delete_reference"; "napi_get_date_value"; "napi_create_dataview"; "napi_get_version"; "napi_define_class"; "napi_is_date"; "napi_remove_wrap"; "napi_delete_property"; "napi_instanceof"; "napi_create_buffer_copy"; "napi_delete_element"; "napi_object_seal"; "napi_queue_async_work"; "napi_get_value_bigint_words"; "napi_is_buffer"; "napi_get_array_length"; "napi_get_property"; "napi_new_instance"; "napi_set_element"; "napi_create_bigint_words"; "napi_strict_equals"; "napi_is_dataview"; "napi_close_escapable_handle_scope"; "napi_get_dataview_info"; "napi_get_value_int32"; "napi_unwrap"; "napi_throw_range_error"; "napi_coerce_to_bool"; "napi_create_uint32"; "napi_has_element"; "napi_create_external_arraybuffer"; "napi_create_symbol"; "node_api_symbol_for"; "napi_coerce_to_string"; "napi_create_type_error"; "napi_fatal_exception"; "napi_create_async_work"; "napi_async_init"; "node_api_create_property_key_utf16"; "napi_type_tag_object"; "napi_check_object_type_tag"; "node_api_post_finalizer"; "napi_add_async_cleanup_hook"; "napi_remove_async_cleanup_hook"; "uv_mutex_init"; "uv_mutex_lock"; "uv_mutex_unlock"; "uv_mutex_destroy"; "uv_async_init"; "uv_async_send"; "uv_close"; "uv_ref"; "uv_unref"; }; \ No newline at end of file diff --git a/ext/napi/generated_symbol_exports_list_macos.def b/ext/napi/generated_symbol_exports_list_macos.def index 36b2f37fa5613b..d1b8d2f918e798 100644 --- a/ext/napi/generated_symbol_exports_list_macos.def +++ b/ext/napi/generated_symbol_exports_list_macos.def @@ -157,4 +157,6 @@ _uv_mutex_unlock _uv_mutex_destroy _uv_async_init _uv_async_send -_uv_close \ No newline at end of file +_uv_close +_uv_ref +_uv_unref \ No newline at end of file diff --git a/ext/napi/generated_symbol_exports_list_windows.def b/ext/napi/generated_symbol_exports_list_windows.def index b7355112e71c35..1a4ef7e06f5a18 100644 --- a/ext/napi/generated_symbol_exports_list_windows.def +++ b/ext/napi/generated_symbol_exports_list_windows.def @@ -159,4 +159,6 @@ EXPORTS uv_mutex_destroy uv_async_init uv_async_send - uv_close \ No newline at end of file + uv_close + uv_ref + uv_unref \ No newline at end of file diff --git a/ext/napi/sym/symbol_exports.json b/ext/napi/sym/symbol_exports.json index 00946b8ed7a577..331587df9409f0 100644 --- a/ext/napi/sym/symbol_exports.json +++ b/ext/napi/sym/symbol_exports.json @@ -159,6 +159,8 @@ "uv_mutex_destroy", "uv_async_init", "uv_async_send", - "uv_close" + "uv_close", + "uv_ref", + "uv_unref" ] } diff --git a/ext/napi/uv.rs b/ext/napi/uv.rs index a60dd43ede6338..c91cf846849853 100644 --- a/ext/napi/uv.rs +++ b/ext/napi/uv.rs @@ -201,6 +201,15 @@ unsafe extern "C" fn uv_close(handle: *mut uv_handle_t, close: uv_close_cb) { } } +// Deno does not use a real libuv event loop, so ref/unref are no-ops. +// These must be exported to avoid null pointer crashes in native addons +// that call them (e.g. zeromq). +#[unsafe(no_mangle)] +unsafe extern "C" fn uv_ref(_handle: *mut uv_handle_t) {} + +#[unsafe(no_mangle)] +unsafe extern "C" fn uv_unref(_handle: *mut uv_handle_t) {} + unsafe extern "C" fn async_exec_wrap(_env: napi_env, data: *mut c_void) { let data: *mut uv_async_t = data.cast(); unsafe {