Re: test patch

[syzbot]

> #syz test

"" does not look like a valid git branch or commit.

>
> diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
> index 9c03a555a6ba..98130182e05d 100644
> --- a/kernel/trace/ring_buffer.c
> +++ b/kernel/trace/ring_buffer.c
> @@ -7995,8 +7995,10 @@ int ring_buffer_map_get_reader(struct trace_buffer *buffer, int cpu)
>  		goto out;
>  
>  	reader = rb_get_reader_page(cpu_buffer);
> -	if (WARN_ON(!reader))
> +	if (!reader) {
> +		WARN_ON(cpu_buffer->reader_page != cpu_buffer->commit_page);
>  		goto out;
> +	}
>  
>  	/* Check if any events were dropped */
>  	missed_events = cpu_buffer->lost_events;