1 files changed, 10 insertions, 6 deletions
diff --git a/src/nxt_unit.c b/src/nxt_unit.c
index 18a07f9e..9696e9cd 100644
--- a/src/nxt_unit.c
+++ b/src/nxt_unit.c
@@ -1093,12 +1093,6 @@ nxt_unit_request_info_release(nxt_unit_request_info_t *req)
     req->response = NULL;
     req->response_buf = NULL;
 
-    if (req_impl->process != NULL) {
-        nxt_unit_process_use(req->ctx, req_impl->process, -1);
-
-        req_impl->process = NULL;
-    }
-
     if (req_impl->websocket) {
         nxt_unit_request_hash_find(&ctx_impl->requests, req_impl->stream, 1);
 
@@ -1113,6 +1107,16 @@ nxt_unit_request_info_release(nxt_unit_request_info_t *req)
         nxt_unit_mmap_buf_free(req_impl->incoming_buf);
     }
 
+    /*
+     * Process release should go after buffers release to guarantee mmap
+     * existence.
+     */
+    if (req_impl->process != NULL) {
+        nxt_unit_process_use(req->ctx, req_impl->process, -1);
+
+        req_impl->process = NULL;
+    }
+
     pthread_mutex_lock(&ctx_impl->mutex);
 
     nxt_queue_remove(&req_impl->link);