diff --git a/lualib/skynet.lua b/lualib/skynet.lua
index f700ba45..78f5bef9 100644
--- a/lualib/skynet.lua
+++ b/lualib/skynet.lua
@@ -122,7 +122,7 @@ local function dispatch_wakeup()
 		local session = sleep_session[co]
 		if session then
 			session_id_coroutine[session] = "BREAK"
-			return suspend(co, coroutine.resume(co, true))
+			return suspend(co, coroutine.resume(co, true, "BREAK"))
 		end
 	end
 end
@@ -246,7 +246,8 @@ function skynet.sleep(ti)
 	session = tonumber(session)
 	local succ, ret = coroutine_yield("SLEEP", session)
 	sleep_session[coroutine.running()] = nil
-	if ret == true then
+	assert(succ, ret)
+	if ret == "BREAK" then
 		return "BREAK"
 	end
 end
diff --git a/lualib/snax/gateserver.lua b/lualib/snax/gateserver.lua
index fc019143..bc5f6547 100644
--- a/lualib/snax/gateserver.lua
+++ b/lualib/snax/gateserver.lua
@@ -96,7 +96,7 @@ function gateserver.start(handler)
 
 	function MSG.error(fd, msg)
 		if handler.error then
-			handler.error(fd)
+			handler.error(fd, msg)
 		end
 		close_fd(fd)
 	end
diff --git a/service/sharedatad.lua b/service/sharedatad.lua
index eb3346c4..40c183c4 100644
--- a/service/sharedatad.lua
+++ b/service/sharedatad.lua
@@ -32,15 +32,18 @@ end
 
 local CMD = {}
 
+local env_mt = { __index = _ENV }
+
 function CMD.new(name, t)
 	local dt = type(t)
 	local value
 	if dt == "table" then
 		value = t
 	elseif dt == "string" then
-		value = {}
-		local f = load(t, "=" .. name, "t", env)
+		value = setmetatable({}, env_mt)
+		local f = load(t, "=" .. name, "t", value)
 		f()
+		setmetatable(value, nil)
 	elseif dt == "nil" then
 		value = {}
 	else