From 54f1c6fefef4423d1862987470150fe4a4a0ba33 Mon Sep 17 00:00:00 2001
From: Eduardo Silva <eduardo@treasure-data.com>
Date: Mon, 2 Sep 2019 11:45:10 -0600
Subject: [PATCH] storage: on exit validate Chunk I/O context

Signed-off-by: Eduardo Silva <eduardo@treasure-data.com>
---
 src/flb_storage.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/flb_storage.c b/src/flb_storage.c
index 9c9fe2ef39b..914322bab16 100644
--- a/src/flb_storage.c
+++ b/src/flb_storage.c
@@ -284,8 +284,12 @@ void flb_storage_destroy(struct flb_config *ctx)
 
     /* Destroy Chunk I/O context */
     cio = (struct cio_ctx *) ctx->cio;
-    cio_destroy(cio);
 
+    if (!cio) {
+        return;
+    }
+
+    cio_destroy(cio);
     if (ctx->storage_bl_mem_limit) {
         flb_free(ctx->storage_bl_mem_limit);
     }