memcached/fix-leak-in-config-reload.patch
2024-06-06 15:39:13 +08:00

38 lines
1.1 KiB
Diff

From b4db7c3855c22c5b6cfcbabffd760e1808144e2e Mon Sep 17 00:00:00 2001
From: dormando <dormando@rydia.net>
Date: Sun, 10 Mar 2024 10:17:24 -0700
Subject: [PATCH] proxy: fix leak in config reload
- config reload loads the code from disk, then dumps it into an internal
binary blob
- that binary blob is loaded from memory into each worker thread
- that temporary blob wasn't being freed
if you have large initial lua and reload every second for hours on end
you'd leak a few megs of ram
---
proxy_config.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/proxy_config.c b/proxy_config.c
index cfe43b1..65e7e3a 100644
--- a/proxy_config.c
+++ b/proxy_config.c
@@ -240,6 +240,12 @@ int proxy_load_config(void *arg) {
db->buf = malloc(db->size);
lua_dump(L, _dump_helper, db, 0);
// 0 means no error.
+ if (ctx->proxy_code) {
+ struct _dumpbuf *old = ctx->proxy_code;
+ free(old->buf);
+ free(old);
+ ctx->proxy_code = NULL;
+ }
ctx->proxy_code = db;
// now we complete the data load by calling the function.
--
2.27.0