From: ebiederm@xmission.com (Eric W. Biederman)
To: Chris Lattner <sabre@nondot.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [x86] Access off the bottom of stack causes a segfault?
Date: 16 Oct 2003 18:23:26 -0600 [thread overview]
Message-ID: <m1ismoempt.fsf@ebiederm.dsl.xmission.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0310141320020.3869-100000@nondot.org>
Chris Lattner <sabre@nondot.org> writes:
> My compiler is generating accesses off the bottom of the stack (address
> below %esp). Is there some funny kernel interaction that I should be
> aware of with this? I'm periodically getting segfaults.
Beyond the signal thing. You are using a demand grown vma for the
stack, and using it past where it has grown. If you grow the vma
deliberately you can use more of it. But using more area than
you have allocated for the stack is most certainly a bug.
Eric
prev parent reply other threads:[~2003-10-17 0:24 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-14 18:31 [x86] Access off the bottom of stack causes a segfault? Chris Lattner
2003-10-14 18:37 ` Davide Libenzi
2003-10-14 19:00 ` Chris Lattner
2003-10-14 18:45 ` Davide Libenzi
2003-10-14 19:28 ` Richard B. Johnson
2003-10-14 19:48 ` Chris Lattner
2003-10-17 23:55 ` Jamie Lokier
2003-10-14 20:47 ` Mikael Pettersson
2003-10-14 18:42 ` Brian Gerst
2003-10-14 18:49 ` Chris Lattner
2003-10-14 18:42 ` Petr Vandrovec
2003-10-14 19:02 ` Chris Lattner
2003-10-14 19:18 ` Richard B. Johnson
2003-10-14 20:43 ` H. Peter Anvin
2003-10-17 0:23 ` Eric W. Biederman [this message]
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