linux-kernel - Re: [patch] x86: avoid dereferencing beyond stack + THREAD

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Message-ID: <20081008092509.GB22387@elte.hu>
Date:	Wed, 8 Oct 2008 11:25:09 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>, Andi Kleen <ak@...ux.intel.com>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [patch] x86: avoid dereferencing beyond stack + THREAD_SIZE


* David Rientjes <rientjes@...gle.com> wrote:

> It's possible for get_wchan() to dereference past task->stack + 
> THREAD_SIZE while iterating through instruction pointers if fp equals 
> the upper boundary, causing a kernel panic.

applied to tip/x86/urgent, thanks David!

	Ingo
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