On Fri, 14 Jul 2023 17:47:57 +0900
Masami Hiramatsu (Google) [off-list ref] wrote:

quoted

@@ -6709,7 +6723,12 @@ static int tracing_open_pipe(struct inode *inode, struct file *filp)
 	}
 
 	trace_seq_init(&iter->seq);
-	iter->trace = tr->current_trace;
+
+	iter->trace = kzalloc(sizeof(*iter->trace), GFP_KERNEL);
+	if (!iter->trace)
+		goto fail;
+
+	*iter->trace = *tr->current_trace;  

Hmm, you allocate iter->trace here (again)

Bah, that looks like it got out of sync with the previous patch (which
removed that). That's not suppose to be there.

I'll fix this an send out a v2. Thanks for catching that!

-- Steve