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

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Date:   Tue, 28 Mar 2023 17:37:40 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Beau Belgrave <beaub@...ux.microsoft.com>
Cc:     mhiramat@...nel.org, mathieu.desnoyers@...icios.com,
        dcook@...ux.microsoft.com, alanau@...ux.microsoft.com,
        brauner@...nel.org, akpm@...ux-foundation.org,
        ebiederm@...ssion.com, keescook@...omium.org, tglx@...utronix.de,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH v9 05/11] tracing/user_events: Add ioctl for disabling
 addresses

On Tue, 28 Mar 2023 17:32:00 -0400
Steven Rostedt <rostedt@...dmis.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.

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.

Thanks!

-- Steve