Re: [PATCH v8 1/3] tracing: Fix subbuf resize races with trace_pipe_raw readers

[Steven Rostedt <rostedt@goodmis.org>]

On Wed, 26 Aug 2026 17:24:35 +0100
Vincent Donnefort <vdonnefort@google.com> wrote:

> > This is a legitimate concern. But with an easy solution. Perhaps just add:
> > 
> > 	if (full &&
> > 	    (!read || (len < (size - read)) ||
> > -	     cpu_buffer->reader_page == cpu_buffer->commit_page))
> > +	     cpu_buffer->reader_page == cpu_buffer->commit_page) &&
> > +	    data_page->order == buffer->subbuf_order)
> > 		return -1;
> > 
> > If the user is changing the buffer size at the same time as reading raw
> > pages, they get what they deserve! I just don't want to let the kernel go
> > into an infinite loop.
> > 
> > -- Steve
> >   
> 
> Sounds good. Do you prefer to get a v9 or you fold this into the existing commit?
> 

Please send a v9. It makes the patchwork flow much better. If I modify a
patch, it makes patchwork not be able to automate the status updates as it
moves around git trees.

Thanks,

-- Steve