From: Oliver Neukum <oliver@neukum.name>
To: nataraja kumar <hainattu@yahoo.com>, linux-kernel@vger.kernel.org
Subject: Re: A question on kernel stack
Date: Fri, 21 Feb 2003 19:09:41 +0100 [thread overview]
Message-ID: <200302211909.41396.oliver@neukum.name> (raw)
In-Reply-To: <20030221180508.18214.qmail@web20206.mail.yahoo.com>
Am Freitag, 21. Februar 2003 19:05 schrieb nataraja kumar:
> hi,
> my apologies if i am wrong. please let me know
> why does kernel use kernel stack when process jumps
> from user mode to kernel mode. why can't user stack
> be used ?
Security. We can't trust user mode to pass a valid stack pointer.
Oliver
next prev parent reply other threads:[~2003-02-21 17:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-21 18:05 nataraja kumar
2003-02-21 18:09 ` Oliver Neukum [this message]
2003-02-21 18:27 ` Brian Gerst
2003-02-21 19:25 ` Richard B. Johnson
2003-02-23 7:43 ` cs02m023
2003-02-23 14:33 ` Kasper Dupont
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