Re: [PATCH v9 05/11] tracing/user_events: Add ioctl for disabling addresses

[Beau Belgrave <beaub@linux.microsoft.com>]

On Tue, Mar 28, 2023 at 05:37:40PM -0400, Steven Rostedt wrote:
> On Tue, 28 Mar 2023 17:32:00 -0400
> Steven Rostedt <rostedt@goodmis.org> wrote:
> 
> > > +static long user_events_ioctl_unreg(unsigned long uarg)
> > > +{
> > > +	struct user_unreg __user *ureg = (struct user_unreg __user *)uarg;
> > > +	struct user_event_mm *mm = current->user_event_mm;
> > > +	struct user_event_enabler *enabler, *next;
> > > +	struct user_unreg reg;
> > > +	long ret;
> > > +
> > > +	ret = user_unreg_get(ureg, &reg);
> > > +
> > > +	if (ret)
> > > +		return ret;
> > > +
> > > +	if (!mm)
> > > +		return -ENOENT;
> > > +
> > > +	ret = -ENOENT;  
> > 
> > Probably should add:
> > 
> > 	if (reg.__reserved || reg.__reserved2)
> > 		return -EINVAL;
> > 
> > here.

Nice catch! Yes I'll add this.

> 
> I finished my review.
> 
> Can to send a v10 out with this update, and also update all the structs to
> have the fields tabbed out for easier reading.
> 

Yep will do, I will have the tabbed out changes in a isolated patch in
the v10 series.

Thanks,
-Beau

> Thanks!
> 
> -- Steve