From: Paul Fulghum <paulkf@microgate.com>
To: Pete Zaitcev <zaitcev@redhat.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2.4] usb serial write fix
Date: Tue, 02 Nov 2004 09:25:08 -0600 [thread overview]
Message-ID: <1099409108.2856.35.camel@deimos.microgate.com> (raw)
In-Reply-To: <1099404208.2856.25.camel@deimos.microgate.com>
On Tue, 2004-11-02 at 08:03, Paul Fulghum wrote:
> On Mon, 2004-11-01 at 21:36, Pete Zaitcev wrote:
> > Why testing for signals? Do you expect any?
>
> post_helper can run in a user process as well
> as keventd. The user process can get a signal
> like HUP to pppd.
This brings up a question.
post_helper is using a single list to queue
write requests from all user processes.
A write request on the list can be processed
in a user process different than the submitting process.
Signals sent to one user process can interfere with
the processing of write requests from a different process.
Is this not a security problem?
--
Paul Fulghum
paulkf@microgate.com
next prev parent reply other threads:[~2004-11-02 15:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.1099321382.10097.linux-kernel2news@redhat.com>
2004-11-02 3:36 ` [PATCH 2.4] usb serial write fix Pete Zaitcev
2004-11-02 14:03 ` Paul Fulghum
2004-11-02 15:25 ` Paul Fulghum [this message]
2004-11-27 18:46 ` Pete Zaitcev
2004-11-01 14:51 Paul Fulghum
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