From: Andi Kleen <ak@suse.de>
To: Ernie Petrides <petrides@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86_64: fix perms/range of vsyscall vma in /proc/*/maps
Date: Fri, 10 Nov 2006 06:07:45 +0100 [thread overview]
Message-ID: <200611100607.45391.ak@suse.de> (raw)
In-Reply-To: <200611100121.kAA1L0UN031589@pasta.boston.redhat.com>
On Friday 10 November 2006 02:20, Ernie Petrides wrote:
> Hi, Andy. The final line of /proc/<pid>/maps on x86_64 for native 64-bit
> tasks shows an incorrect ending address and incorrect permissions. There
> is only a single page mapped in this vsyscall region, and it is accessible
> for both read and execute.
The range reported is how much address space is reserved, but you're
right it is less.
But I don't like hardcoding a page here -- this will likely be extended
soon. Can you please create a new define VSYSCALL_REAL_LENGTH or similar
in vsyscall.h and use that?
Thanks,
-Andi
next prev parent reply other threads:[~2006-11-10 5:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-10 1:20 [PATCH] x86_64: fix perms/range of vsyscall vma in /proc/*/maps Ernie Petrides
2006-11-10 5:07 ` Andi Kleen [this message]
2006-11-14 2:51 ` Ernie Petrides
2006-11-14 2:52 ` Andi Kleen
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