| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
[Xen-devel] [PATCH 1/5] x86-64: Pad vDSO to a page boundary
|
To: |
x86@xxxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> |
|
Subject: |
[Xen-devel] [PATCH 1/5] x86-64: Pad vDSO to a page boundary |
|
From: |
Andy Lutomirski <luto@xxxxxxx> |
|
Date: |
Tue, 26 Jul 2011 23:20:35 -0400 |
|
Cc: |
jeremy@xxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, keir.xen@xxxxxxxxx, Andy Lutomirski <luto@xxxxxxx> |
|
Delivery-date: |
Tue, 26 Jul 2011 20:24:27 -0700 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxxx |
|
In-reply-to: |
<cover.1311736366.git.luto@xxxxxxx> |
|
In-reply-to: |
<cover.1311736366.git.luto@xxxxxxx> |
|
List-help: |
<mailto:xen-devel-request@lists.xensource.com?subject=help> |
|
List-id: |
Xen developer discussion <xen-devel.lists.xensource.com> |
|
List-post: |
<mailto:xen-devel@lists.xensource.com> |
|
List-subscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
|
List-unsubscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
|
References: |
<cover.1311736366.git.luto@xxxxxxx> |
|
References: |
<cover.1311736366.git.luto@xxxxxxx> |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
This avoids an information leak to userspace.
Signed-off-by: Andy Lutomirski <luto@xxxxxxx>
---
arch/x86/vdso/vdso.S | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/vdso/vdso.S b/arch/x86/vdso/vdso.S
index 1b979c1..01f5e3b 100644
--- a/arch/x86/vdso/vdso.S
+++ b/arch/x86/vdso/vdso.S
@@ -9,6 +9,7 @@ __PAGE_ALIGNED_DATA
vdso_start:
.incbin "arch/x86/vdso/vdso.so"
vdso_end:
+ .align PAGE_SIZE /* extra data here leaks to userspace. */
.previous
--
1.7.6
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home