Hi, I found a potential null pointer dereference bug in the project source code of tmux, and I have shown the execution sequence of the program that may generate the bug on the graph below. The red text illustrates the steps that generate the bug

I think I do not need to provide more specific information in this bug to explain why the function bufferevent_new returns null, because some code snippets can already be seen in the current version of the code as follows

I look forward to your reply and thank you very much for your patience!