[Devel] Re: [PATCH] procfs: Do not release pid_ns->proc_mnt too early

Louis Rilling Louis.Rilling at kerlabs.com
Wed Jun 16 09:15:37 PDT 2010


On 16/06/10 20:04 +0400, Pavel Emelyanov wrote:
> > +void proc_new_task(struct task_struct *task)
> > +{
> > +	struct pid *pid;
> > +	int i;
> > +
> > +	if (!task->pid)
> > +		return;
> > +
> > +	pid = task_pid(task);
> > +	for (i = 0; i <= pid->level; i++)
> > +		mntget(pid->numbers[i].ns->proc_mnt);
> 
> I feel I'm missing something significant, but this patch breaks
> the mntget/mntput balance. Doesn't it?

Why?

all mntget() here have their mntput() in proc_flush_task(). At least, this is
the intent...

Thanks,

Louis

-- 
Dr Louis Rilling			Kerlabs
Skype: louis.rilling			Batiment Germanium
Phone: (+33|0) 6 80 89 08 23		80 avenue des Buttes de Coesmes
http://www.kerlabs.com/			35700 Rennes
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