linux-kernel - Re: [PATCH] introduce put_pid_rcu() to fix unsafe put_pid(vc->vt

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Message-ID: <m1psb0efgf.fsf@ebiederm.dsl.xmission.com>
Date:	Sun, 03 Dec 2006 16:18:24 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Oleg Nesterov <oleg@...sign.ru>
Cc:	Andrew Morton <akpm@...l.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] introduce put_pid_rcu() to fix unsafe put_pid(vc->vt_pid)

Oleg Nesterov <oleg@...sign.ru> writes:

>> task_struct* or something?
>
> I don't think this is good. It was converted from task_struct* to pid*.
>
> Eric, what do you think?

I think I have a fix that uses the proper locking sitting in my queue that
I haven't pushed because I have been got to look at just about every
irq but present in 2.6.19-rcX.  Then for some reason I had this stupid
usb debug cable sitting on my desk and since I can't stand useful
things going unused I just wrote a driver for that :)

Anyway with a little luck I should be working on the pid namespace and
this stuff later today so I will try and send out the proper patch.

Not that I'm really opposed to this infrastructure but I'd like to
avoid it until we really need it.

Eric

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