[PATCH v2] fs/proc: Don't expose absolute kernel addresses via wchan

[Ingo Molnar]

* Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> On Wed, 30 Sep 2015, Ingo Molnar wrote:
> > diff --git a/fs/proc/array.c b/fs/proc/array.c
> > index f60f0121e331..99082730b2ac 100644
> > --- a/fs/proc/array.c
> > +++ b/fs/proc/array.c
> > @@ -507,7 +507,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
> >  	seq_put_decimal_ull(m, ' ', task->blocked.sig[0] & 0x7fffffffUL);
> >  	seq_put_decimal_ull(m, ' ', sigign.sig[0] & 0x7fffffffUL);
> >  	seq_put_decimal_ull(m, ' ', sigcatch.sig[0] & 0x7fffffffUL);
> > -	seq_put_decimal_ull(m, ' ', wchan);
> > +	seq_puts(m, " 0"); /* Used to be numeric wchan - replaced by /proc/PID/wchan */
> 
> That should get rid of all wchan usage in do_task_stat()

Indeed - updated patch attached.

Thanks,

	Ingo

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