From: Andi Kleen <andi@firstfloor.org>
To: Avi Kivity <avi@qumranet.com>
Cc: Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org, Sam Ravnborg <sam@ravnborg.org>
Subject: Re: [PATCH] Make LIST_POISON less deadly (v3)
Date: Tue, 20 May 2008 17:15:36 +0200 [thread overview]
Message-ID: <87fxsdgg6f.fsf@basil.nowhere.org> (raw)
In-Reply-To: <1211283565-30671-1-git-send-email-avi@qumranet.com> (Avi Kivity's message of "Tue, 20 May 2008 14:39:25 +0300")
Avi Kivity <avi@qumranet.com> writes:
>
> +config ILLEGAL_POINTER_VALUE
> + hex
> + default 0 if X86_32
> + default 0xffffc10000000000 if X86_64
Don't make it exactly 0xffffc10000000000 but 0xffffc10000000000 + 0x1000000
or so, otherwise list_entry() users which subtract offsets would still
end up in user space and there might be actually something in there
by default.
-Andi
next prev parent reply other threads:[~2008-05-20 15:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-20 11:39 [PATCH] Make LIST_POISON less deadly (v3) Avi Kivity
2008-05-20 11:55 ` Ingo Molnar
2008-05-20 15:15 ` Andi Kleen [this message]
2008-05-20 15:17 ` Avi Kivity
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